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iwlwifi: remove debugfs entries before cfg80211
[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 int iwl4965_is_empty_essid(const char *essid, int essid_len)
91 {
92 /* Single white space is for Linksys APs */
93 if (essid_len == 1 && essid[0] == ' ')
94 return 1;
95
96 /* Otherwise, if the entire essid is 0, we assume it is hidden */
97 while (essid_len) {
98 essid_len--;
99 if (essid[essid_len] != '\0')
100 return 0;
101 }
102
103 return 1;
104 }
105
106 static const char *iwl4965_escape_essid(const char *essid, u8 essid_len)
107 {
108 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
109 const char *s = essid;
110 char *d = escaped;
111
112 if (iwl4965_is_empty_essid(essid, essid_len)) {
113 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
114 return escaped;
115 }
116
117 essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
118 while (essid_len--) {
119 if (*s == '\0') {
120 *d++ = '\\';
121 *d++ = '0';
122 s++;
123 } else
124 *d++ = *s++;
125 }
126 *d = '\0';
127 return escaped;
128 }
129
130 /*************** STATION TABLE MANAGEMENT ****
131 * mac80211 should be examined to determine if sta_info is duplicating
132 * the functionality provided here
133 */
134
135 /**************************************************************/
136
137
138
139 static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
140 {
141 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
142
143 if (hw_decrypt)
144 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
145 else
146 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
147
148 }
149
150 /**
151 * iwl4965_check_rxon_cmd - validate RXON structure is valid
152 *
153 * NOTE: This is really only useful during development and can eventually
154 * be #ifdef'd out once the driver is stable and folks aren't actively
155 * making changes
156 */
157 static int iwl4965_check_rxon_cmd(struct iwl_rxon_cmd *rxon)
158 {
159 int error = 0;
160 int counter = 1;
161
162 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
163 error |= le32_to_cpu(rxon->flags &
164 (RXON_FLG_TGJ_NARROW_BAND_MSK |
165 RXON_FLG_RADAR_DETECT_MSK));
166 if (error)
167 IWL_WARNING("check 24G fields %d | %d\n",
168 counter++, error);
169 } else {
170 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
171 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
172 if (error)
173 IWL_WARNING("check 52 fields %d | %d\n",
174 counter++, error);
175 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
176 if (error)
177 IWL_WARNING("check 52 CCK %d | %d\n",
178 counter++, error);
179 }
180 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
181 if (error)
182 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
183
184 /* make sure basic rates 6Mbps and 1Mbps are supported */
185 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
186 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
187 if (error)
188 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
189
190 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
191 if (error)
192 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
193
194 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
195 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
196 if (error)
197 IWL_WARNING("check CCK and short slot %d | %d\n",
198 counter++, error);
199
200 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
201 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
202 if (error)
203 IWL_WARNING("check CCK & auto detect %d | %d\n",
204 counter++, error);
205
206 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
207 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
208 if (error)
209 IWL_WARNING("check TGG and auto detect %d | %d\n",
210 counter++, error);
211
212 if (error)
213 IWL_WARNING("Tuning to channel %d\n",
214 le16_to_cpu(rxon->channel));
215
216 if (error) {
217 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
218 return -1;
219 }
220 return 0;
221 }
222
223 /**
224 * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
225 * @priv: staging_rxon is compared to active_rxon
226 *
227 * If the RXON structure is changing enough to require a new tune,
228 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
229 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
230 */
231 static int iwl4965_full_rxon_required(struct iwl_priv *priv)
232 {
233
234 /* These items are only settable from the full RXON command */
235 if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
236 compare_ether_addr(priv->staging_rxon.bssid_addr,
237 priv->active_rxon.bssid_addr) ||
238 compare_ether_addr(priv->staging_rxon.node_addr,
239 priv->active_rxon.node_addr) ||
240 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
241 priv->active_rxon.wlap_bssid_addr) ||
242 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
243 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
244 (priv->staging_rxon.air_propagation !=
245 priv->active_rxon.air_propagation) ||
246 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
247 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
248 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
249 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
250 (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
251 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
252 return 1;
253
254 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
255 * be updated with the RXON_ASSOC command -- however only some
256 * flag transitions are allowed using RXON_ASSOC */
257
258 /* Check if we are not switching bands */
259 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
260 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
261 return 1;
262
263 /* Check if we are switching association toggle */
264 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
265 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
266 return 1;
267
268 return 0;
269 }
270
271 /**
272 * iwl4965_commit_rxon - commit staging_rxon to hardware
273 *
274 * The RXON command in staging_rxon is committed to the hardware and
275 * the active_rxon structure is updated with the new data. This
276 * function correctly transitions out of the RXON_ASSOC_MSK state if
277 * a HW tune is required based on the RXON structure changes.
278 */
279 static int iwl4965_commit_rxon(struct iwl_priv *priv)
280 {
281 /* cast away the const for active_rxon in this function */
282 struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
283 DECLARE_MAC_BUF(mac);
284 int rc = 0;
285
286 if (!iwl_is_alive(priv))
287 return -1;
288
289 /* always get timestamp with Rx frame */
290 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
291
292 rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
293 if (rc) {
294 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
295 return -EINVAL;
296 }
297
298 /* If we don't need to send a full RXON, we can use
299 * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
300 * and other flags for the current radio configuration. */
301 if (!iwl4965_full_rxon_required(priv)) {
302 rc = iwl_send_rxon_assoc(priv);
303 if (rc) {
304 IWL_ERROR("Error setting RXON_ASSOC "
305 "configuration (%d).\n", rc);
306 return rc;
307 }
308
309 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
310
311 return 0;
312 }
313
314 /* station table will be cleared */
315 priv->assoc_station_added = 0;
316
317 /* If we are currently associated and the new config requires
318 * an RXON_ASSOC and the new config wants the associated mask enabled,
319 * we must clear the associated from the active configuration
320 * before we apply the new config */
321 if (iwl_is_associated(priv) &&
322 (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
323 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
324 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
325
326 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
327 sizeof(struct iwl_rxon_cmd),
328 &priv->active_rxon);
329
330 /* If the mask clearing failed then we set
331 * active_rxon back to what it was previously */
332 if (rc) {
333 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
334 IWL_ERROR("Error clearing ASSOC_MSK on current "
335 "configuration (%d).\n", rc);
336 return rc;
337 }
338 }
339
340 IWL_DEBUG_INFO("Sending RXON\n"
341 "* with%s RXON_FILTER_ASSOC_MSK\n"
342 "* channel = %d\n"
343 "* bssid = %s\n",
344 ((priv->staging_rxon.filter_flags &
345 RXON_FILTER_ASSOC_MSK) ? "" : "out"),
346 le16_to_cpu(priv->staging_rxon.channel),
347 print_mac(mac, priv->staging_rxon.bssid_addr));
348
349 iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
350 /* Apply the new configuration */
351 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
352 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
353 if (rc) {
354 IWL_ERROR("Error setting new configuration (%d).\n", rc);
355 return rc;
356 }
357
358 iwl_remove_station(priv, iwl_bcast_addr, 0);
359 iwlcore_clear_stations_table(priv);
360
361 if (!priv->error_recovering)
362 priv->start_calib = 0;
363
364 iwl_init_sensitivity(priv);
365
366 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
367
368 /* If we issue a new RXON command which required a tune then we must
369 * send a new TXPOWER command or we won't be able to Tx any frames */
370 rc = iwl4965_hw_reg_send_txpower(priv);
371 if (rc) {
372 IWL_ERROR("Error setting Tx power (%d).\n", rc);
373 return rc;
374 }
375
376 /* Add the broadcast address so we can send broadcast frames */
377 if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
378 IWL_INVALID_STATION) {
379 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
380 return -EIO;
381 }
382
383 /* If we have set the ASSOC_MSK and we are in BSS mode then
384 * add the IWL_AP_ID to the station rate table */
385 if (iwl_is_associated(priv) &&
386 (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
387 if (iwl_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
388 == IWL_INVALID_STATION) {
389 IWL_ERROR("Error adding AP address for transmit.\n");
390 return -EIO;
391 }
392 priv->assoc_station_added = 1;
393 if (priv->default_wep_key &&
394 iwl_send_static_wepkey_cmd(priv, 0))
395 IWL_ERROR("Could not send WEP static key.\n");
396 }
397
398 return 0;
399 }
400
401 void iwl4965_update_chain_flags(struct iwl_priv *priv)
402 {
403
404 iwl_set_rxon_chain(priv);
405 iwl4965_commit_rxon(priv);
406 }
407
408 static int iwl4965_send_bt_config(struct iwl_priv *priv)
409 {
410 struct iwl4965_bt_cmd bt_cmd = {
411 .flags = 3,
412 .lead_time = 0xAA,
413 .max_kill = 1,
414 .kill_ack_mask = 0,
415 .kill_cts_mask = 0,
416 };
417
418 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
419 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
420 }
421
422 static int iwl4965_send_scan_abort(struct iwl_priv *priv)
423 {
424 int ret = 0;
425 struct iwl_rx_packet *res;
426 struct iwl_host_cmd cmd = {
427 .id = REPLY_SCAN_ABORT_CMD,
428 .meta.flags = CMD_WANT_SKB,
429 };
430
431 /* If there isn't a scan actively going on in the hardware
432 * then we are in between scan bands and not actually
433 * actively scanning, so don't send the abort command */
434 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
435 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
436 return 0;
437 }
438
439 ret = iwl_send_cmd_sync(priv, &cmd);
440 if (ret) {
441 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
442 return ret;
443 }
444
445 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
446 if (res->u.status != CAN_ABORT_STATUS) {
447 /* The scan abort will return 1 for success or
448 * 2 for "failure". A failure condition can be
449 * due to simply not being in an active scan which
450 * can occur if we send the scan abort before we
451 * the microcode has notified us that a scan is
452 * completed. */
453 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
454 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
455 clear_bit(STATUS_SCAN_HW, &priv->status);
456 }
457
458 dev_kfree_skb_any(cmd.meta.u.skb);
459
460 return ret;
461 }
462
463 /*
464 * CARD_STATE_CMD
465 *
466 * Use: Sets the device's internal card state to enable, disable, or halt
467 *
468 * When in the 'enable' state the card operates as normal.
469 * When in the 'disable' state, the card enters into a low power mode.
470 * When in the 'halt' state, the card is shut down and must be fully
471 * restarted to come back on.
472 */
473 static int iwl4965_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
474 {
475 struct iwl_host_cmd cmd = {
476 .id = REPLY_CARD_STATE_CMD,
477 .len = sizeof(u32),
478 .data = &flags,
479 .meta.flags = meta_flag,
480 };
481
482 return iwl_send_cmd(priv, &cmd);
483 }
484
485 static void iwl_clear_free_frames(struct iwl_priv *priv)
486 {
487 struct list_head *element;
488
489 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
490 priv->frames_count);
491
492 while (!list_empty(&priv->free_frames)) {
493 element = priv->free_frames.next;
494 list_del(element);
495 kfree(list_entry(element, struct iwl_frame, list));
496 priv->frames_count--;
497 }
498
499 if (priv->frames_count) {
500 IWL_WARNING("%d frames still in use. Did we lose one?\n",
501 priv->frames_count);
502 priv->frames_count = 0;
503 }
504 }
505
506 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
507 {
508 struct iwl_frame *frame;
509 struct list_head *element;
510 if (list_empty(&priv->free_frames)) {
511 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
512 if (!frame) {
513 IWL_ERROR("Could not allocate frame!\n");
514 return NULL;
515 }
516
517 priv->frames_count++;
518 return frame;
519 }
520
521 element = priv->free_frames.next;
522 list_del(element);
523 return list_entry(element, struct iwl_frame, list);
524 }
525
526 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
527 {
528 memset(frame, 0, sizeof(*frame));
529 list_add(&frame->list, &priv->free_frames);
530 }
531
532 unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
533 struct ieee80211_hdr *hdr,
534 const u8 *dest, int left)
535 {
536
537 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
538 ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
539 (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
540 return 0;
541
542 if (priv->ibss_beacon->len > left)
543 return 0;
544
545 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
546
547 return priv->ibss_beacon->len;
548 }
549
550 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
551 {
552 int i;
553 int rate_mask;
554
555 /* Set rate mask*/
556 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
557 rate_mask = priv->active_rate_basic & 0xF;
558 else
559 rate_mask = priv->active_rate_basic & 0xFF0;
560
561 /* Find lowest valid rate */
562 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
563 i = iwl_rates[i].next_ieee) {
564 if (rate_mask & (1 << i))
565 return iwl_rates[i].plcp;
566 }
567
568 /* No valid rate was found. Assign the lowest one */
569 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
570 return IWL_RATE_1M_PLCP;
571 else
572 return IWL_RATE_6M_PLCP;
573 }
574
575 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
576 {
577 struct iwl_frame *frame;
578 unsigned int frame_size;
579 int rc;
580 u8 rate;
581
582 frame = iwl_get_free_frame(priv);
583
584 if (!frame) {
585 IWL_ERROR("Could not obtain free frame buffer for beacon "
586 "command.\n");
587 return -ENOMEM;
588 }
589
590 rate = iwl4965_rate_get_lowest_plcp(priv);
591
592 frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
593
594 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
595 &frame->u.cmd[0]);
596
597 iwl_free_frame(priv, frame);
598
599 return rc;
600 }
601
602 /******************************************************************************
603 *
604 * Misc. internal state and helper functions
605 *
606 ******************************************************************************/
607
608 /**
609 * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
610 *
611 * return : set the bit for each supported rate insert in ie
612 */
613 static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
614 u16 basic_rate, int *left)
615 {
616 u16 ret_rates = 0, bit;
617 int i;
618 u8 *cnt = ie;
619 u8 *rates = ie + 1;
620
621 for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
622 if (bit & supported_rate) {
623 ret_rates |= bit;
624 rates[*cnt] = iwl_rates[i].ieee |
625 ((bit & basic_rate) ? 0x80 : 0x00);
626 (*cnt)++;
627 (*left)--;
628 if ((*left <= 0) ||
629 (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
630 break;
631 }
632 }
633
634 return ret_rates;
635 }
636
637 #ifdef CONFIG_IWL4965_HT
638 static void iwl4965_ht_conf(struct iwl_priv *priv,
639 struct ieee80211_bss_conf *bss_conf)
640 {
641 struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
642 struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
643 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
644
645 IWL_DEBUG_MAC80211("enter: \n");
646
647 iwl_conf->is_ht = bss_conf->assoc_ht;
648
649 if (!iwl_conf->is_ht)
650 return;
651
652 priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
653
654 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
655 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
656 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
657 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
658
659 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
660 iwl_conf->max_amsdu_size =
661 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
662
663 iwl_conf->supported_chan_width =
664 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
665 iwl_conf->extension_chan_offset =
666 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
667 /* If no above or below channel supplied disable FAT channel */
668 if (iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_ABOVE &&
669 iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_BELOW)
670 iwl_conf->supported_chan_width = 0;
671
672 iwl_conf->tx_mimo_ps_mode =
673 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
674 memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
675
676 iwl_conf->control_channel = ht_bss_conf->primary_channel;
677 iwl_conf->tx_chan_width =
678 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
679 iwl_conf->ht_protection =
680 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
681 iwl_conf->non_GF_STA_present =
682 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
683
684 IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
685 IWL_DEBUG_MAC80211("leave\n");
686 }
687
688 static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband,
689 u8 *pos, int *left)
690 {
691 struct ieee80211_ht_cap *ht_cap;
692
693 if (!sband || !sband->ht_info.ht_supported)
694 return;
695
696 if (*left < sizeof(struct ieee80211_ht_cap))
697 return;
698
699 *pos++ = sizeof(struct ieee80211_ht_cap);
700 ht_cap = (struct ieee80211_ht_cap *) pos;
701
702 ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap);
703 memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16);
704 ht_cap->ampdu_params_info =
705 (sband->ht_info.ampdu_factor & IEEE80211_HT_CAP_AMPDU_FACTOR) |
706 ((sband->ht_info.ampdu_density << 2) &
707 IEEE80211_HT_CAP_AMPDU_DENSITY);
708 *left -= sizeof(struct ieee80211_ht_cap);
709 }
710 #else
711 static inline void iwl4965_ht_conf(struct iwl_priv *priv,
712 struct ieee80211_bss_conf *bss_conf)
713 {
714 }
715 static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband,
716 u8 *pos, int *left)
717 {
718 }
719 #endif
720
721
722 /**
723 * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
724 */
725 static u16 iwl4965_fill_probe_req(struct iwl_priv *priv,
726 enum ieee80211_band band,
727 struct ieee80211_mgmt *frame,
728 int left, int is_direct)
729 {
730 int len = 0;
731 u8 *pos = NULL;
732 u16 active_rates, ret_rates, cck_rates, active_rate_basic;
733 const struct ieee80211_supported_band *sband =
734 iwl_get_hw_mode(priv, band);
735
736 /* Make sure there is enough space for the probe request,
737 * two mandatory IEs and the data */
738 left -= 24;
739 if (left < 0)
740 return 0;
741 len += 24;
742
743 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
744 memcpy(frame->da, iwl_bcast_addr, ETH_ALEN);
745 memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
746 memcpy(frame->bssid, iwl_bcast_addr, ETH_ALEN);
747 frame->seq_ctrl = 0;
748
749 /* fill in our indirect SSID IE */
750 /* ...next IE... */
751
752 left -= 2;
753 if (left < 0)
754 return 0;
755 len += 2;
756 pos = &(frame->u.probe_req.variable[0]);
757 *pos++ = WLAN_EID_SSID;
758 *pos++ = 0;
759
760 /* fill in our direct SSID IE... */
761 if (is_direct) {
762 /* ...next IE... */
763 left -= 2 + priv->essid_len;
764 if (left < 0)
765 return 0;
766 /* ... fill it in... */
767 *pos++ = WLAN_EID_SSID;
768 *pos++ = priv->essid_len;
769 memcpy(pos, priv->essid, priv->essid_len);
770 pos += priv->essid_len;
771 len += 2 + priv->essid_len;
772 }
773
774 /* fill in supported rate */
775 /* ...next IE... */
776 left -= 2;
777 if (left < 0)
778 return 0;
779
780 /* ... fill it in... */
781 *pos++ = WLAN_EID_SUPP_RATES;
782 *pos = 0;
783
784 /* exclude 60M rate */
785 active_rates = priv->rates_mask;
786 active_rates &= ~IWL_RATE_60M_MASK;
787
788 active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
789
790 cck_rates = IWL_CCK_RATES_MASK & active_rates;
791 ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
792 active_rate_basic, &left);
793 active_rates &= ~ret_rates;
794
795 ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
796 active_rate_basic, &left);
797 active_rates &= ~ret_rates;
798
799 len += 2 + *pos;
800 pos += (*pos) + 1;
801 if (active_rates == 0)
802 goto fill_end;
803
804 /* fill in supported extended rate */
805 /* ...next IE... */
806 left -= 2;
807 if (left < 0)
808 return 0;
809 /* ... fill it in... */
810 *pos++ = WLAN_EID_EXT_SUPP_RATES;
811 *pos = 0;
812 iwl4965_supported_rate_to_ie(pos, active_rates,
813 active_rate_basic, &left);
814 if (*pos > 0)
815 len += 2 + *pos;
816
817 fill_end:
818 /* fill in HT IE */
819 left -= 2;
820 if (left < 0)
821 return 0;
822
823 *pos++ = WLAN_EID_HT_CAPABILITY;
824 *pos = 0;
825
826 iwl_ht_cap_to_ie(sband, pos, &left);
827
828 if (*pos > 0)
829 len += 2 + *pos;
830 return (u16)len;
831 }
832
833 /*
834 * QoS support
835 */
836 static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
837 struct iwl4965_qosparam_cmd *qos)
838 {
839
840 return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
841 sizeof(struct iwl4965_qosparam_cmd), qos);
842 }
843
844 static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
845 {
846 unsigned long flags;
847
848 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
849 return;
850
851 if (!priv->qos_data.qos_enable)
852 return;
853
854 spin_lock_irqsave(&priv->lock, flags);
855 priv->qos_data.def_qos_parm.qos_flags = 0;
856
857 if (priv->qos_data.qos_cap.q_AP.queue_request &&
858 !priv->qos_data.qos_cap.q_AP.txop_request)
859 priv->qos_data.def_qos_parm.qos_flags |=
860 QOS_PARAM_FLG_TXOP_TYPE_MSK;
861 if (priv->qos_data.qos_active)
862 priv->qos_data.def_qos_parm.qos_flags |=
863 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
864
865 #ifdef CONFIG_IWL4965_HT
866 if (priv->current_ht_config.is_ht)
867 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
868 #endif /* CONFIG_IWL4965_HT */
869
870 spin_unlock_irqrestore(&priv->lock, flags);
871
872 if (force || iwl_is_associated(priv)) {
873 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
874 priv->qos_data.qos_active,
875 priv->qos_data.def_qos_parm.qos_flags);
876
877 iwl4965_send_qos_params_command(priv,
878 &(priv->qos_data.def_qos_parm));
879 }
880 }
881
882 int iwl4965_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
883 {
884 /* Filter incoming packets to determine if they are targeted toward
885 * this network, discarding packets coming from ourselves */
886 switch (priv->iw_mode) {
887 case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source | BSSID */
888 /* packets from our adapter are dropped (echo) */
889 if (!compare_ether_addr(header->addr2, priv->mac_addr))
890 return 0;
891 /* {broad,multi}cast packets to our IBSS go through */
892 if (is_multicast_ether_addr(header->addr1))
893 return !compare_ether_addr(header->addr3, priv->bssid);
894 /* packets to our adapter go through */
895 return !compare_ether_addr(header->addr1, priv->mac_addr);
896 case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
897 /* packets from our adapter are dropped (echo) */
898 if (!compare_ether_addr(header->addr3, priv->mac_addr))
899 return 0;
900 /* {broad,multi}cast packets to our BSS go through */
901 if (is_multicast_ether_addr(header->addr1))
902 return !compare_ether_addr(header->addr2, priv->bssid);
903 /* packets to our adapter go through */
904 return !compare_ether_addr(header->addr1, priv->mac_addr);
905 default:
906 break;
907 }
908
909 return 1;
910 }
911
912
913
914 /**
915 * iwl4965_scan_cancel - Cancel any currently executing HW scan
916 *
917 * NOTE: priv->mutex is not required before calling this function
918 */
919 static int iwl4965_scan_cancel(struct iwl_priv *priv)
920 {
921 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
922 clear_bit(STATUS_SCANNING, &priv->status);
923 return 0;
924 }
925
926 if (test_bit(STATUS_SCANNING, &priv->status)) {
927 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
928 IWL_DEBUG_SCAN("Queuing scan abort.\n");
929 set_bit(STATUS_SCAN_ABORTING, &priv->status);
930 queue_work(priv->workqueue, &priv->abort_scan);
931
932 } else
933 IWL_DEBUG_SCAN("Scan abort already in progress.\n");
934
935 return test_bit(STATUS_SCANNING, &priv->status);
936 }
937
938 return 0;
939 }
940
941 /**
942 * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
943 * @ms: amount of time to wait (in milliseconds) for scan to abort
944 *
945 * NOTE: priv->mutex must be held before calling this function
946 */
947 static int iwl4965_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
948 {
949 unsigned long now = jiffies;
950 int ret;
951
952 ret = iwl4965_scan_cancel(priv);
953 if (ret && ms) {
954 mutex_unlock(&priv->mutex);
955 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
956 test_bit(STATUS_SCANNING, &priv->status))
957 msleep(1);
958 mutex_lock(&priv->mutex);
959
960 return test_bit(STATUS_SCANNING, &priv->status);
961 }
962
963 return ret;
964 }
965
966 static void iwl4965_sequence_reset(struct iwl_priv *priv)
967 {
968 /* Reset ieee stats */
969
970 /* We don't reset the net_device_stats (ieee->stats) on
971 * re-association */
972
973 priv->last_seq_num = -1;
974 priv->last_frag_num = -1;
975 priv->last_packet_time = 0;
976
977 iwl4965_scan_cancel(priv);
978 }
979
980 #define MAX_UCODE_BEACON_INTERVAL 4096
981 #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
982
983 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
984 {
985 u16 new_val = 0;
986 u16 beacon_factor = 0;
987
988 beacon_factor =
989 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
990 / MAX_UCODE_BEACON_INTERVAL;
991 new_val = beacon_val / beacon_factor;
992
993 return cpu_to_le16(new_val);
994 }
995
996 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
997 {
998 u64 interval_tm_unit;
999 u64 tsf, result;
1000 unsigned long flags;
1001 struct ieee80211_conf *conf = NULL;
1002 u16 beacon_int = 0;
1003
1004 conf = ieee80211_get_hw_conf(priv->hw);
1005
1006 spin_lock_irqsave(&priv->lock, flags);
1007 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
1008 priv->rxon_timing.timestamp.dw[0] =
1009 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
1010
1011 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
1012
1013 tsf = priv->timestamp;
1014
1015 beacon_int = priv->beacon_int;
1016 spin_unlock_irqrestore(&priv->lock, flags);
1017
1018 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
1019 if (beacon_int == 0) {
1020 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
1021 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
1022 } else {
1023 priv->rxon_timing.beacon_interval =
1024 cpu_to_le16(beacon_int);
1025 priv->rxon_timing.beacon_interval =
1026 iwl4965_adjust_beacon_interval(
1027 le16_to_cpu(priv->rxon_timing.beacon_interval));
1028 }
1029
1030 priv->rxon_timing.atim_window = 0;
1031 } else {
1032 priv->rxon_timing.beacon_interval =
1033 iwl4965_adjust_beacon_interval(conf->beacon_int);
1034 /* TODO: we need to get atim_window from upper stack
1035 * for now we set to 0 */
1036 priv->rxon_timing.atim_window = 0;
1037 }
1038
1039 interval_tm_unit =
1040 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
1041 result = do_div(tsf, interval_tm_unit);
1042 priv->rxon_timing.beacon_init_val =
1043 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
1044
1045 IWL_DEBUG_ASSOC
1046 ("beacon interval %d beacon timer %d beacon tim %d\n",
1047 le16_to_cpu(priv->rxon_timing.beacon_interval),
1048 le32_to_cpu(priv->rxon_timing.beacon_init_val),
1049 le16_to_cpu(priv->rxon_timing.atim_window));
1050 }
1051
1052 static int iwl4965_scan_initiate(struct iwl_priv *priv)
1053 {
1054 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1055 IWL_ERROR("APs don't scan.\n");
1056 return 0;
1057 }
1058
1059 if (!iwl_is_ready_rf(priv)) {
1060 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
1061 return -EIO;
1062 }
1063
1064 if (test_bit(STATUS_SCANNING, &priv->status)) {
1065 IWL_DEBUG_SCAN("Scan already in progress.\n");
1066 return -EAGAIN;
1067 }
1068
1069 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1070 IWL_DEBUG_SCAN("Scan request while abort pending. "
1071 "Queuing.\n");
1072 return -EAGAIN;
1073 }
1074
1075 IWL_DEBUG_INFO("Starting scan...\n");
1076 priv->scan_bands = 2;
1077 set_bit(STATUS_SCANNING, &priv->status);
1078 priv->scan_start = jiffies;
1079 priv->scan_pass_start = priv->scan_start;
1080
1081 queue_work(priv->workqueue, &priv->request_scan);
1082
1083 return 0;
1084 }
1085
1086
1087 static void iwl4965_set_flags_for_phymode(struct iwl_priv *priv,
1088 enum ieee80211_band band)
1089 {
1090 if (band == IEEE80211_BAND_5GHZ) {
1091 priv->staging_rxon.flags &=
1092 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1093 | RXON_FLG_CCK_MSK);
1094 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1095 } else {
1096 /* Copied from iwl4965_post_associate() */
1097 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1098 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1099 else
1100 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1101
1102 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
1103 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1104
1105 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1106 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1107 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1108 }
1109 }
1110
1111 /*
1112 * initialize rxon structure with default values from eeprom
1113 */
1114 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
1115 {
1116 const struct iwl_channel_info *ch_info;
1117
1118 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1119
1120 switch (priv->iw_mode) {
1121 case IEEE80211_IF_TYPE_AP:
1122 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1123 break;
1124
1125 case IEEE80211_IF_TYPE_STA:
1126 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1127 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1128 break;
1129
1130 case IEEE80211_IF_TYPE_IBSS:
1131 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1132 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1133 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1134 RXON_FILTER_ACCEPT_GRP_MSK;
1135 break;
1136
1137 case IEEE80211_IF_TYPE_MNTR:
1138 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
1139 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
1140 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
1141 break;
1142 default:
1143 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
1144 break;
1145 }
1146
1147 #if 0
1148 /* TODO: Figure out when short_preamble would be set and cache from
1149 * that */
1150 if (!hw_to_local(priv->hw)->short_preamble)
1151 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1152 else
1153 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1154 #endif
1155
1156 ch_info = iwl_get_channel_info(priv, priv->band,
1157 le16_to_cpu(priv->staging_rxon.channel));
1158
1159 if (!ch_info)
1160 ch_info = &priv->channel_info[0];
1161
1162 /*
1163 * in some case A channels are all non IBSS
1164 * in this case force B/G channel
1165 */
1166 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
1167 !(is_channel_ibss(ch_info)))
1168 ch_info = &priv->channel_info[0];
1169
1170 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1171 priv->band = ch_info->band;
1172
1173 iwl4965_set_flags_for_phymode(priv, priv->band);
1174
1175 priv->staging_rxon.ofdm_basic_rates =
1176 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1177 priv->staging_rxon.cck_basic_rates =
1178 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1179
1180 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
1181 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
1182 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1183 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1184 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1185 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1186 iwl_set_rxon_chain(priv);
1187 }
1188
1189 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
1190 {
1191 if (mode == IEEE80211_IF_TYPE_IBSS) {
1192 const struct iwl_channel_info *ch_info;
1193
1194 ch_info = iwl_get_channel_info(priv,
1195 priv->band,
1196 le16_to_cpu(priv->staging_rxon.channel));
1197
1198 if (!ch_info || !is_channel_ibss(ch_info)) {
1199 IWL_ERROR("channel %d not IBSS channel\n",
1200 le16_to_cpu(priv->staging_rxon.channel));
1201 return -EINVAL;
1202 }
1203 }
1204
1205 priv->iw_mode = mode;
1206
1207 iwl4965_connection_init_rx_config(priv);
1208 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1209
1210 iwlcore_clear_stations_table(priv);
1211
1212 /* dont commit rxon if rf-kill is on*/
1213 if (!iwl_is_ready_rf(priv))
1214 return -EAGAIN;
1215
1216 cancel_delayed_work(&priv->scan_check);
1217 if (iwl4965_scan_cancel_timeout(priv, 100)) {
1218 IWL_WARNING("Aborted scan still in progress after 100ms\n");
1219 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
1220 return -EAGAIN;
1221 }
1222
1223 iwl4965_commit_rxon(priv);
1224
1225 return 0;
1226 }
1227
1228 static void iwl4965_set_rate(struct iwl_priv *priv)
1229 {
1230 const struct ieee80211_supported_band *hw = NULL;
1231 struct ieee80211_rate *rate;
1232 int i;
1233
1234 hw = iwl_get_hw_mode(priv, priv->band);
1235 if (!hw) {
1236 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
1237 return;
1238 }
1239
1240 priv->active_rate = 0;
1241 priv->active_rate_basic = 0;
1242
1243 for (i = 0; i < hw->n_bitrates; i++) {
1244 rate = &(hw->bitrates[i]);
1245 if (rate->hw_value < IWL_RATE_COUNT)
1246 priv->active_rate |= (1 << rate->hw_value);
1247 }
1248
1249 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
1250 priv->active_rate, priv->active_rate_basic);
1251
1252 /*
1253 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
1254 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
1255 * OFDM
1256 */
1257 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
1258 priv->staging_rxon.cck_basic_rates =
1259 ((priv->active_rate_basic &
1260 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
1261 else
1262 priv->staging_rxon.cck_basic_rates =
1263 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1264
1265 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
1266 priv->staging_rxon.ofdm_basic_rates =
1267 ((priv->active_rate_basic &
1268 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
1269 IWL_FIRST_OFDM_RATE) & 0xFF;
1270 else
1271 priv->staging_rxon.ofdm_basic_rates =
1272 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1273 }
1274
1275 void iwl4965_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
1276 {
1277 unsigned long flags;
1278
1279 if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
1280 return;
1281
1282 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
1283 disable_radio ? "OFF" : "ON");
1284
1285 if (disable_radio) {
1286 iwl4965_scan_cancel(priv);
1287 /* FIXME: This is a workaround for AP */
1288 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
1289 spin_lock_irqsave(&priv->lock, flags);
1290 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1291 CSR_UCODE_SW_BIT_RFKILL);
1292 spin_unlock_irqrestore(&priv->lock, flags);
1293 /* call the host command only if no hw rf-kill set */
1294 if (!test_bit(STATUS_RF_KILL_HW, &priv->status) &&
1295 iwl_is_ready(priv))
1296 iwl4965_send_card_state(priv,
1297 CARD_STATE_CMD_DISABLE,
1298 0);
1299 set_bit(STATUS_RF_KILL_SW, &priv->status);
1300
1301 /* make sure mac80211 stop sending Tx frame */
1302 if (priv->mac80211_registered)
1303 ieee80211_stop_queues(priv->hw);
1304 }
1305 return;
1306 }
1307
1308 spin_lock_irqsave(&priv->lock, flags);
1309 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1310
1311 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1312 spin_unlock_irqrestore(&priv->lock, flags);
1313
1314 /* wake up ucode */
1315 msleep(10);
1316
1317 spin_lock_irqsave(&priv->lock, flags);
1318 iwl_read32(priv, CSR_UCODE_DRV_GP1);
1319 if (!iwl_grab_nic_access(priv))
1320 iwl_release_nic_access(priv);
1321 spin_unlock_irqrestore(&priv->lock, flags);
1322
1323 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
1324 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
1325 "disabled by HW switch\n");
1326 return;
1327 }
1328
1329 queue_work(priv->workqueue, &priv->restart);
1330 return;
1331 }
1332
1333 #define IWL_PACKET_RETRY_TIME HZ
1334
1335 int iwl4965_is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
1336 {
1337 u16 sc = le16_to_cpu(header->seq_ctrl);
1338 u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
1339 u16 frag = sc & IEEE80211_SCTL_FRAG;
1340 u16 *last_seq, *last_frag;
1341 unsigned long *last_time;
1342
1343 switch (priv->iw_mode) {
1344 case IEEE80211_IF_TYPE_IBSS:{
1345 struct list_head *p;
1346 struct iwl4965_ibss_seq *entry = NULL;
1347 u8 *mac = header->addr2;
1348 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
1349
1350 __list_for_each(p, &priv->ibss_mac_hash[index]) {
1351 entry = list_entry(p, struct iwl4965_ibss_seq, list);
1352 if (!compare_ether_addr(entry->mac, mac))
1353 break;
1354 }
1355 if (p == &priv->ibss_mac_hash[index]) {
1356 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
1357 if (!entry) {
1358 IWL_ERROR("Cannot malloc new mac entry\n");
1359 return 0;
1360 }
1361 memcpy(entry->mac, mac, ETH_ALEN);
1362 entry->seq_num = seq;
1363 entry->frag_num = frag;
1364 entry->packet_time = jiffies;
1365 list_add(&entry->list, &priv->ibss_mac_hash[index]);
1366 return 0;
1367 }
1368 last_seq = &entry->seq_num;
1369 last_frag = &entry->frag_num;
1370 last_time = &entry->packet_time;
1371 break;
1372 }
1373 case IEEE80211_IF_TYPE_STA:
1374 last_seq = &priv->last_seq_num;
1375 last_frag = &priv->last_frag_num;
1376 last_time = &priv->last_packet_time;
1377 break;
1378 default:
1379 return 0;
1380 }
1381 if ((*last_seq == seq) &&
1382 time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
1383 if (*last_frag == frag)
1384 goto drop;
1385 if (*last_frag + 1 != frag)
1386 /* out-of-order fragment */
1387 goto drop;
1388 } else
1389 *last_seq = seq;
1390
1391 *last_frag = frag;
1392 *last_time = jiffies;
1393 return 0;
1394
1395 drop:
1396 return 1;
1397 }
1398
1399 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1400
1401 #include "iwl-spectrum.h"
1402
1403 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
1404 #define BEACON_TIME_MASK_HIGH 0xFF000000
1405 #define TIME_UNIT 1024
1406
1407 /*
1408 * extended beacon time format
1409 * time in usec will be changed into a 32-bit value in 8:24 format
1410 * the high 1 byte is the beacon counts
1411 * the lower 3 bytes is the time in usec within one beacon interval
1412 */
1413
1414 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
1415 {
1416 u32 quot;
1417 u32 rem;
1418 u32 interval = beacon_interval * 1024;
1419
1420 if (!interval || !usec)
1421 return 0;
1422
1423 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
1424 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
1425
1426 return (quot << 24) + rem;
1427 }
1428
1429 /* base is usually what we get from ucode with each received frame,
1430 * the same as HW timer counter counting down
1431 */
1432
1433 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
1434 {
1435 u32 base_low = base & BEACON_TIME_MASK_LOW;
1436 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
1437 u32 interval = beacon_interval * TIME_UNIT;
1438 u32 res = (base & BEACON_TIME_MASK_HIGH) +
1439 (addon & BEACON_TIME_MASK_HIGH);
1440
1441 if (base_low > addon_low)
1442 res += base_low - addon_low;
1443 else if (base_low < addon_low) {
1444 res += interval + base_low - addon_low;
1445 res += (1 << 24);
1446 } else
1447 res += (1 << 24);
1448
1449 return cpu_to_le32(res);
1450 }
1451
1452 static int iwl4965_get_measurement(struct iwl_priv *priv,
1453 struct ieee80211_measurement_params *params,
1454 u8 type)
1455 {
1456 struct iwl4965_spectrum_cmd spectrum;
1457 struct iwl_rx_packet *res;
1458 struct iwl_host_cmd cmd = {
1459 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
1460 .data = (void *)&spectrum,
1461 .meta.flags = CMD_WANT_SKB,
1462 };
1463 u32 add_time = le64_to_cpu(params->start_time);
1464 int rc;
1465 int spectrum_resp_status;
1466 int duration = le16_to_cpu(params->duration);
1467
1468 if (iwl_is_associated(priv))
1469 add_time =
1470 iwl4965_usecs_to_beacons(
1471 le64_to_cpu(params->start_time) - priv->last_tsf,
1472 le16_to_cpu(priv->rxon_timing.beacon_interval));
1473
1474 memset(&spectrum, 0, sizeof(spectrum));
1475
1476 spectrum.channel_count = cpu_to_le16(1);
1477 spectrum.flags =
1478 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
1479 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
1480 cmd.len = sizeof(spectrum);
1481 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
1482
1483 if (iwl_is_associated(priv))
1484 spectrum.start_time =
1485 iwl4965_add_beacon_time(priv->last_beacon_time,
1486 add_time,
1487 le16_to_cpu(priv->rxon_timing.beacon_interval));
1488 else
1489 spectrum.start_time = 0;
1490
1491 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
1492 spectrum.channels[0].channel = params->channel;
1493 spectrum.channels[0].type = type;
1494 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
1495 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
1496 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
1497
1498 rc = iwl_send_cmd_sync(priv, &cmd);
1499 if (rc)
1500 return rc;
1501
1502 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1503 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1504 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
1505 rc = -EIO;
1506 }
1507
1508 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
1509 switch (spectrum_resp_status) {
1510 case 0: /* Command will be handled */
1511 if (res->u.spectrum.id != 0xff) {
1512 IWL_DEBUG_INFO
1513 ("Replaced existing measurement: %d\n",
1514 res->u.spectrum.id);
1515 priv->measurement_status &= ~MEASUREMENT_READY;
1516 }
1517 priv->measurement_status |= MEASUREMENT_ACTIVE;
1518 rc = 0;
1519 break;
1520
1521 case 1: /* Command will not be handled */
1522 rc = -EAGAIN;
1523 break;
1524 }
1525
1526 dev_kfree_skb_any(cmd.meta.u.skb);
1527
1528 return rc;
1529 }
1530 #endif
1531
1532 /******************************************************************************
1533 *
1534 * Generic RX handler implementations
1535 *
1536 ******************************************************************************/
1537 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1538 struct iwl_rx_mem_buffer *rxb)
1539 {
1540 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1541 struct iwl_alive_resp *palive;
1542 struct delayed_work *pwork;
1543
1544 palive = &pkt->u.alive_frame;
1545
1546 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1547 "0x%01X 0x%01X\n",
1548 palive->is_valid, palive->ver_type,
1549 palive->ver_subtype);
1550
1551 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1552 IWL_DEBUG_INFO("Initialization Alive received.\n");
1553 memcpy(&priv->card_alive_init,
1554 &pkt->u.alive_frame,
1555 sizeof(struct iwl_init_alive_resp));
1556 pwork = &priv->init_alive_start;
1557 } else {
1558 IWL_DEBUG_INFO("Runtime Alive received.\n");
1559 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1560 sizeof(struct iwl_alive_resp));
1561 pwork = &priv->alive_start;
1562 }
1563
1564 /* We delay the ALIVE response by 5ms to
1565 * give the HW RF Kill time to activate... */
1566 if (palive->is_valid == UCODE_VALID_OK)
1567 queue_delayed_work(priv->workqueue, pwork,
1568 msecs_to_jiffies(5));
1569 else
1570 IWL_WARNING("uCode did not respond OK.\n");
1571 }
1572
1573 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1574 struct iwl_rx_mem_buffer *rxb)
1575 {
1576 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1577
1578 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1579 "seq 0x%04X ser 0x%08X\n",
1580 le32_to_cpu(pkt->u.err_resp.error_type),
1581 get_cmd_string(pkt->u.err_resp.cmd_id),
1582 pkt->u.err_resp.cmd_id,
1583 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1584 le32_to_cpu(pkt->u.err_resp.error_info));
1585 }
1586
1587 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1588
1589 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1590 {
1591 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1592 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1593 struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1594 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1595 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1596 rxon->channel = csa->channel;
1597 priv->staging_rxon.channel = csa->channel;
1598 }
1599
1600 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1601 struct iwl_rx_mem_buffer *rxb)
1602 {
1603 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1604 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1605 struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1606
1607 if (!report->state) {
1608 IWL_DEBUG(IWL_DL_11H,
1609 "Spectrum Measure Notification: Start\n");
1610 return;
1611 }
1612
1613 memcpy(&priv->measure_report, report, sizeof(*report));
1614 priv->measurement_status |= MEASUREMENT_READY;
1615 #endif
1616 }
1617
1618 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1619 struct iwl_rx_mem_buffer *rxb)
1620 {
1621 #ifdef CONFIG_IWLWIFI_DEBUG
1622 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1623 struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1624 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1625 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1626 #endif
1627 }
1628
1629 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1630 struct iwl_rx_mem_buffer *rxb)
1631 {
1632 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1633 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1634 "notification for %s:\n",
1635 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1636 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1637 }
1638
1639 static void iwl4965_bg_beacon_update(struct work_struct *work)
1640 {
1641 struct iwl_priv *priv =
1642 container_of(work, struct iwl_priv, beacon_update);
1643 struct sk_buff *beacon;
1644
1645 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1646 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1647
1648 if (!beacon) {
1649 IWL_ERROR("update beacon failed\n");
1650 return;
1651 }
1652
1653 mutex_lock(&priv->mutex);
1654 /* new beacon skb is allocated every time; dispose previous.*/
1655 if (priv->ibss_beacon)
1656 dev_kfree_skb(priv->ibss_beacon);
1657
1658 priv->ibss_beacon = beacon;
1659 mutex_unlock(&priv->mutex);
1660
1661 iwl4965_send_beacon_cmd(priv);
1662 }
1663
1664 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1665 struct iwl_rx_mem_buffer *rxb)
1666 {
1667 #ifdef CONFIG_IWLWIFI_DEBUG
1668 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1669 struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1670 u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1671
1672 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1673 "tsf %d %d rate %d\n",
1674 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
1675 beacon->beacon_notify_hdr.failure_frame,
1676 le32_to_cpu(beacon->ibss_mgr_status),
1677 le32_to_cpu(beacon->high_tsf),
1678 le32_to_cpu(beacon->low_tsf), rate);
1679 #endif
1680
1681 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
1682 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1683 queue_work(priv->workqueue, &priv->beacon_update);
1684 }
1685
1686 /* Service response to REPLY_SCAN_CMD (0x80) */
1687 static void iwl4965_rx_reply_scan(struct iwl_priv *priv,
1688 struct iwl_rx_mem_buffer *rxb)
1689 {
1690 #ifdef CONFIG_IWLWIFI_DEBUG
1691 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1692 struct iwl4965_scanreq_notification *notif =
1693 (struct iwl4965_scanreq_notification *)pkt->u.raw;
1694
1695 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
1696 #endif
1697 }
1698
1699 /* Service SCAN_START_NOTIFICATION (0x82) */
1700 static void iwl4965_rx_scan_start_notif(struct iwl_priv *priv,
1701 struct iwl_rx_mem_buffer *rxb)
1702 {
1703 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1704 struct iwl4965_scanstart_notification *notif =
1705 (struct iwl4965_scanstart_notification *)pkt->u.raw;
1706 priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
1707 IWL_DEBUG_SCAN("Scan start: "
1708 "%d [802.11%s] "
1709 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
1710 notif->channel,
1711 notif->band ? "bg" : "a",
1712 notif->tsf_high,
1713 notif->tsf_low, notif->status, notif->beacon_timer);
1714 }
1715
1716 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
1717 static void iwl4965_rx_scan_results_notif(struct iwl_priv *priv,
1718 struct iwl_rx_mem_buffer *rxb)
1719 {
1720 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1721 struct iwl4965_scanresults_notification *notif =
1722 (struct iwl4965_scanresults_notification *)pkt->u.raw;
1723
1724 IWL_DEBUG_SCAN("Scan ch.res: "
1725 "%d [802.11%s] "
1726 "(TSF: 0x%08X:%08X) - %d "
1727 "elapsed=%lu usec (%dms since last)\n",
1728 notif->channel,
1729 notif->band ? "bg" : "a",
1730 le32_to_cpu(notif->tsf_high),
1731 le32_to_cpu(notif->tsf_low),
1732 le32_to_cpu(notif->statistics[0]),
1733 le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
1734 jiffies_to_msecs(elapsed_jiffies
1735 (priv->last_scan_jiffies, jiffies)));
1736
1737 priv->last_scan_jiffies = jiffies;
1738 priv->next_scan_jiffies = 0;
1739 }
1740
1741 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
1742 static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv,
1743 struct iwl_rx_mem_buffer *rxb)
1744 {
1745 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1746 struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
1747
1748 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
1749 scan_notif->scanned_channels,
1750 scan_notif->tsf_low,
1751 scan_notif->tsf_high, scan_notif->status);
1752
1753 /* The HW is no longer scanning */
1754 clear_bit(STATUS_SCAN_HW, &priv->status);
1755
1756 /* The scan completion notification came in, so kill that timer... */
1757 cancel_delayed_work(&priv->scan_check);
1758
1759 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
1760 (priv->scan_bands == 2) ? "2.4" : "5.2",
1761 jiffies_to_msecs(elapsed_jiffies
1762 (priv->scan_pass_start, jiffies)));
1763
1764 /* Remove this scanned band from the list
1765 * of pending bands to scan */
1766 priv->scan_bands--;
1767
1768 /* If a request to abort was given, or the scan did not succeed
1769 * then we reset the scan state machine and terminate,
1770 * re-queuing another scan if one has been requested */
1771 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1772 IWL_DEBUG_INFO("Aborted scan completed.\n");
1773 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1774 } else {
1775 /* If there are more bands on this scan pass reschedule */
1776 if (priv->scan_bands > 0)
1777 goto reschedule;
1778 }
1779
1780 priv->last_scan_jiffies = jiffies;
1781 priv->next_scan_jiffies = 0;
1782 IWL_DEBUG_INFO("Setting scan to off\n");
1783
1784 clear_bit(STATUS_SCANNING, &priv->status);
1785
1786 IWL_DEBUG_INFO("Scan took %dms\n",
1787 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
1788
1789 queue_work(priv->workqueue, &priv->scan_completed);
1790
1791 return;
1792
1793 reschedule:
1794 priv->scan_pass_start = jiffies;
1795 queue_work(priv->workqueue, &priv->request_scan);
1796 }
1797
1798 /* Handle notification from uCode that card's power state is changing
1799 * due to software, hardware, or critical temperature RFKILL */
1800 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1801 struct iwl_rx_mem_buffer *rxb)
1802 {
1803 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1804 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1805 unsigned long status = priv->status;
1806
1807 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1808 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1809 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1810
1811 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1812 RF_CARD_DISABLED)) {
1813
1814 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1815 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1816
1817 if (!iwl_grab_nic_access(priv)) {
1818 iwl_write_direct32(
1819 priv, HBUS_TARG_MBX_C,
1820 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1821
1822 iwl_release_nic_access(priv);
1823 }
1824
1825 if (!(flags & RXON_CARD_DISABLED)) {
1826 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1827 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1828 if (!iwl_grab_nic_access(priv)) {
1829 iwl_write_direct32(
1830 priv, HBUS_TARG_MBX_C,
1831 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1832
1833 iwl_release_nic_access(priv);
1834 }
1835 }
1836
1837 if (flags & RF_CARD_DISABLED) {
1838 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1839 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1840 iwl_read32(priv, CSR_UCODE_DRV_GP1);
1841 if (!iwl_grab_nic_access(priv))
1842 iwl_release_nic_access(priv);
1843 }
1844 }
1845
1846 if (flags & HW_CARD_DISABLED)
1847 set_bit(STATUS_RF_KILL_HW, &priv->status);
1848 else
1849 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1850
1851
1852 if (flags & SW_CARD_DISABLED)
1853 set_bit(STATUS_RF_KILL_SW, &priv->status);
1854 else
1855 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1856
1857 if (!(flags & RXON_CARD_DISABLED))
1858 iwl4965_scan_cancel(priv);
1859
1860 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1861 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1862 (test_bit(STATUS_RF_KILL_SW, &status) !=
1863 test_bit(STATUS_RF_KILL_SW, &priv->status)))
1864 queue_work(priv->workqueue, &priv->rf_kill);
1865 else
1866 wake_up_interruptible(&priv->wait_command_queue);
1867 }
1868
1869 /* Cache phy data (Rx signal strength, etc) for HT frame (REPLY_RX_PHY_CMD).
1870 * This will be used later in iwl4965_rx_reply_rx() for REPLY_RX_MPDU_CMD. */
1871 static void iwl4965_rx_reply_rx_phy(struct iwl_priv *priv,
1872 struct iwl_rx_mem_buffer *rxb)
1873 {
1874 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1875 priv->last_phy_res[0] = 1;
1876 memcpy(&priv->last_phy_res[1], &(pkt->u.raw[0]),
1877 sizeof(struct iwl4965_rx_phy_res));
1878 }
1879
1880 /**
1881 * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1882 *
1883 * Setup the RX handlers for each of the reply types sent from the uCode
1884 * to the host.
1885 *
1886 * This function chains into the hardware specific files for them to setup
1887 * any hardware specific handlers as well.
1888 */
1889 static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
1890 {
1891 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1892 priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1893 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1894 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1895 iwl4965_rx_spectrum_measure_notif;
1896 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1897 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1898 iwl4965_rx_pm_debug_statistics_notif;
1899 priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1900
1901 /*
1902 * The same handler is used for both the REPLY to a discrete
1903 * statistics request from the host as well as for the periodic
1904 * statistics notifications (after received beacons) from the uCode.
1905 */
1906 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
1907 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
1908 /* scan handlers */
1909 priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
1910 priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
1911 priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
1912 iwl4965_rx_scan_results_notif;
1913 priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
1914 iwl4965_rx_scan_complete_notif;
1915 /* status change handler */
1916 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1917
1918 priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1919 iwl_rx_missed_beacon_notif;
1920 /* Rx handlers */
1921 priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl4965_rx_reply_rx_phy;
1922 priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl4965_rx_reply_rx;
1923 /* Set up hardware specific Rx handlers */
1924 priv->cfg->ops->lib->rx_handler_setup(priv);
1925 }
1926
1927 /*
1928 * this should be called while priv->lock is locked
1929 */
1930 static void __iwl_rx_replenish(struct iwl_priv *priv)
1931 {
1932 iwl_rx_allocate(priv);
1933 iwl_rx_queue_restock(priv);
1934 }
1935
1936
1937 /**
1938 * iwl_rx_handle - Main entry function for receiving responses from uCode
1939 *
1940 * Uses the priv->rx_handlers callback function array to invoke
1941 * the appropriate handlers, including command responses,
1942 * frame-received notifications, and other notifications.
1943 */
1944 void iwl_rx_handle(struct iwl_priv *priv)
1945 {
1946 struct iwl_rx_mem_buffer *rxb;
1947 struct iwl_rx_packet *pkt;
1948 struct iwl_rx_queue *rxq = &priv->rxq;
1949 u32 r, i;
1950 int reclaim;
1951 unsigned long flags;
1952 u8 fill_rx = 0;
1953 u32 count = 8;
1954
1955 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1956 * buffer that the driver may process (last buffer filled by ucode). */
1957 r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1958 i = rxq->read;
1959
1960 /* Rx interrupt, but nothing sent from uCode */
1961 if (i == r)
1962 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1963
1964 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1965 fill_rx = 1;
1966
1967 while (i != r) {
1968 rxb = rxq->queue[i];
1969
1970 /* If an RXB doesn't have a Rx queue slot associated with it,
1971 * then a bug has been introduced in the queue refilling
1972 * routines -- catch it here */
1973 BUG_ON(rxb == NULL);
1974
1975 rxq->queue[i] = NULL;
1976
1977 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1978 priv->hw_params.rx_buf_size,
1979 PCI_DMA_FROMDEVICE);
1980 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1981
1982 /* Reclaim a command buffer only if this packet is a response
1983 * to a (driver-originated) command.
1984 * If the packet (e.g. Rx frame) originated from uCode,
1985 * there is no command buffer to reclaim.
1986 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1987 * but apparently a few don't get set; catch them here. */
1988 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1989 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1990 (pkt->hdr.cmd != REPLY_RX) &&
1991 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1992 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1993 (pkt->hdr.cmd != REPLY_TX);
1994
1995 /* Based on type of command response or notification,
1996 * handle those that need handling via function in
1997 * rx_handlers table. See iwl4965_setup_rx_handlers() */
1998 if (priv->rx_handlers[pkt->hdr.cmd]) {
1999 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
2000 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
2001 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
2002 } else {
2003 /* No handling needed */
2004 IWL_DEBUG(IWL_DL_RX,
2005 "r %d i %d No handler needed for %s, 0x%02x\n",
2006 r, i, get_cmd_string(pkt->hdr.cmd),
2007 pkt->hdr.cmd);
2008 }
2009
2010 if (reclaim) {
2011 /* Invoke any callbacks, transfer the skb to caller, and
2012 * fire off the (possibly) blocking iwl_send_cmd()
2013 * as we reclaim the driver command queue */
2014 if (rxb && rxb->skb)
2015 iwl_tx_cmd_complete(priv, rxb);
2016 else
2017 IWL_WARNING("Claim null rxb?\n");
2018 }
2019
2020 /* For now we just don't re-use anything. We can tweak this
2021 * later to try and re-use notification packets and SKBs that
2022 * fail to Rx correctly */
2023 if (rxb->skb != NULL) {
2024 priv->alloc_rxb_skb--;
2025 dev_kfree_skb_any(rxb->skb);
2026 rxb->skb = NULL;
2027 }
2028
2029 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
2030 priv->hw_params.rx_buf_size,
2031 PCI_DMA_FROMDEVICE);
2032 spin_lock_irqsave(&rxq->lock, flags);
2033 list_add_tail(&rxb->list, &priv->rxq.rx_used);
2034 spin_unlock_irqrestore(&rxq->lock, flags);
2035 i = (i + 1) & RX_QUEUE_MASK;
2036 /* If there are a lot of unused frames,
2037 * restock the Rx queue so ucode wont assert. */
2038 if (fill_rx) {
2039 count++;
2040 if (count >= 8) {
2041 priv->rxq.read = i;
2042 __iwl_rx_replenish(priv);
2043 count = 0;
2044 }
2045 }
2046 }
2047
2048 /* Backtrack one entry */
2049 priv->rxq.read = i;
2050 iwl_rx_queue_restock(priv);
2051 }
2052 /* Convert linear signal-to-noise ratio into dB */
2053 static u8 ratio2dB[100] = {
2054 /* 0 1 2 3 4 5 6 7 8 9 */
2055 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
2056 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
2057 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
2058 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
2059 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
2060 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
2061 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
2062 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
2063 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
2064 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
2065 };
2066
2067 /* Calculates a relative dB value from a ratio of linear
2068 * (i.e. not dB) signal levels.
2069 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
2070 int iwl4965_calc_db_from_ratio(int sig_ratio)
2071 {
2072 /* 1000:1 or higher just report as 60 dB */
2073 if (sig_ratio >= 1000)
2074 return 60;
2075
2076 /* 100:1 or higher, divide by 10 and use table,
2077 * add 20 dB to make up for divide by 10 */
2078 if (sig_ratio >= 100)
2079 return (20 + (int)ratio2dB[sig_ratio/10]);
2080
2081 /* We shouldn't see this */
2082 if (sig_ratio < 1)
2083 return 0;
2084
2085 /* Use table for ratios 1:1 - 99:1 */
2086 return (int)ratio2dB[sig_ratio];
2087 }
2088
2089 #define PERFECT_RSSI (-20) /* dBm */
2090 #define WORST_RSSI (-95) /* dBm */
2091 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
2092
2093 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
2094 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
2095 * about formulas used below. */
2096 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
2097 {
2098 int sig_qual;
2099 int degradation = PERFECT_RSSI - rssi_dbm;
2100
2101 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
2102 * as indicator; formula is (signal dbm - noise dbm).
2103 * SNR at or above 40 is a great signal (100%).
2104 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
2105 * Weakest usable signal is usually 10 - 15 dB SNR. */
2106 if (noise_dbm) {
2107 if (rssi_dbm - noise_dbm >= 40)
2108 return 100;
2109 else if (rssi_dbm < noise_dbm)
2110 return 0;
2111 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
2112
2113 /* Else use just the signal level.
2114 * This formula is a least squares fit of data points collected and
2115 * compared with a reference system that had a percentage (%) display
2116 * for signal quality. */
2117 } else
2118 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
2119 (15 * RSSI_RANGE + 62 * degradation)) /
2120 (RSSI_RANGE * RSSI_RANGE);
2121
2122 if (sig_qual > 100)
2123 sig_qual = 100;
2124 else if (sig_qual < 1)
2125 sig_qual = 0;
2126
2127 return sig_qual;
2128 }
2129
2130 #ifdef CONFIG_IWLWIFI_DEBUG
2131 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
2132 {
2133 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
2134 DECLARE_MAC_BUF(mac);
2135
2136 IWL_DEBUG_RADIO("RX CONFIG:\n");
2137 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
2138 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
2139 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
2140 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
2141 le32_to_cpu(rxon->filter_flags));
2142 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
2143 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
2144 rxon->ofdm_basic_rates);
2145 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
2146 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
2147 print_mac(mac, rxon->node_addr));
2148 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
2149 print_mac(mac, rxon->bssid_addr));
2150 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
2151 }
2152 #endif
2153
2154 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
2155 {
2156 IWL_DEBUG_ISR("Enabling interrupts\n");
2157 set_bit(STATUS_INT_ENABLED, &priv->status);
2158 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
2159 }
2160
2161 /* call this function to flush any scheduled tasklet */
2162 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
2163 {
2164 /* wait to make sure we flush pedding tasklet*/
2165 synchronize_irq(priv->pci_dev->irq);
2166 tasklet_kill(&priv->irq_tasklet);
2167 }
2168
2169 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
2170 {
2171 clear_bit(STATUS_INT_ENABLED, &priv->status);
2172
2173 /* disable interrupts from uCode/NIC to host */
2174 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
2175
2176 /* acknowledge/clear/reset any interrupts still pending
2177 * from uCode or flow handler (Rx/Tx DMA) */
2178 iwl_write32(priv, CSR_INT, 0xffffffff);
2179 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
2180 IWL_DEBUG_ISR("Disabled interrupts\n");
2181 }
2182
2183
2184 /**
2185 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
2186 */
2187 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
2188 {
2189 /* Set the FW error flag -- cleared on iwl4965_down */
2190 set_bit(STATUS_FW_ERROR, &priv->status);
2191
2192 /* Cancel currently queued command. */
2193 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
2194
2195 #ifdef CONFIG_IWLWIFI_DEBUG
2196 if (priv->debug_level & IWL_DL_FW_ERRORS) {
2197 iwl_dump_nic_error_log(priv);
2198 iwl_dump_nic_event_log(priv);
2199 iwl4965_print_rx_config_cmd(priv);
2200 }
2201 #endif
2202
2203 wake_up_interruptible(&priv->wait_command_queue);
2204
2205 /* Keep the restart process from trying to send host
2206 * commands by clearing the INIT status bit */
2207 clear_bit(STATUS_READY, &priv->status);
2208
2209 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2210 IWL_DEBUG(IWL_DL_FW_ERRORS,
2211 "Restarting adapter due to uCode error.\n");
2212
2213 if (iwl_is_associated(priv)) {
2214 memcpy(&priv->recovery_rxon, &priv->active_rxon,
2215 sizeof(priv->recovery_rxon));
2216 priv->error_recovering = 1;
2217 }
2218 if (priv->cfg->mod_params->restart_fw)
2219 queue_work(priv->workqueue, &priv->restart);
2220 }
2221 }
2222
2223 static void iwl4965_error_recovery(struct iwl_priv *priv)
2224 {
2225 unsigned long flags;
2226
2227 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
2228 sizeof(priv->staging_rxon));
2229 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2230 iwl4965_commit_rxon(priv);
2231
2232 iwl_rxon_add_station(priv, priv->bssid, 1);
2233
2234 spin_lock_irqsave(&priv->lock, flags);
2235 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
2236 priv->error_recovering = 0;
2237 spin_unlock_irqrestore(&priv->lock, flags);
2238 }
2239
2240 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
2241 {
2242 u32 inta, handled = 0;
2243 u32 inta_fh;
2244 unsigned long flags;
2245 #ifdef CONFIG_IWLWIFI_DEBUG
2246 u32 inta_mask;
2247 #endif
2248
2249 spin_lock_irqsave(&priv->lock, flags);
2250
2251 /* Ack/clear/reset pending uCode interrupts.
2252 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
2253 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
2254 inta = iwl_read32(priv, CSR_INT);
2255 iwl_write32(priv, CSR_INT, inta);
2256
2257 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
2258 * Any new interrupts that happen after this, either while we're
2259 * in this tasklet, or later, will show up in next ISR/tasklet. */
2260 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2261 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
2262
2263 #ifdef CONFIG_IWLWIFI_DEBUG
2264 if (priv->debug_level & IWL_DL_ISR) {
2265 /* just for debug */
2266 inta_mask = iwl_read32(priv, CSR_INT_MASK);
2267 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2268 inta, inta_mask, inta_fh);
2269 }
2270 #endif
2271
2272 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
2273 * atomic, make sure that inta covers all the interrupts that
2274 * we've discovered, even if FH interrupt came in just after
2275 * reading CSR_INT. */
2276 if (inta_fh & CSR49_FH_INT_RX_MASK)
2277 inta |= CSR_INT_BIT_FH_RX;
2278 if (inta_fh & CSR49_FH_INT_TX_MASK)
2279 inta |= CSR_INT_BIT_FH_TX;
2280
2281 /* Now service all interrupt bits discovered above. */
2282 if (inta & CSR_INT_BIT_HW_ERR) {
2283 IWL_ERROR("Microcode HW error detected. Restarting.\n");
2284
2285 /* Tell the device to stop sending interrupts */
2286 iwl4965_disable_interrupts(priv);
2287
2288 iwl4965_irq_handle_error(priv);
2289
2290 handled |= CSR_INT_BIT_HW_ERR;
2291
2292 spin_unlock_irqrestore(&priv->lock, flags);
2293
2294 return;
2295 }
2296
2297 #ifdef CONFIG_IWLWIFI_DEBUG
2298 if (priv->debug_level & (IWL_DL_ISR)) {
2299 /* NIC fires this, but we don't use it, redundant with WAKEUP */
2300 if (inta & CSR_INT_BIT_SCD)
2301 IWL_DEBUG_ISR("Scheduler finished to transmit "
2302 "the frame/frames.\n");
2303
2304 /* Alive notification via Rx interrupt will do the real work */
2305 if (inta & CSR_INT_BIT_ALIVE)
2306 IWL_DEBUG_ISR("Alive interrupt\n");
2307 }
2308 #endif
2309 /* Safely ignore these bits for debug checks below */
2310 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
2311
2312 /* HW RF KILL switch toggled */
2313 if (inta & CSR_INT_BIT_RF_KILL) {
2314 int hw_rf_kill = 0;
2315 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
2316 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
2317 hw_rf_kill = 1;
2318
2319 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
2320 hw_rf_kill ? "disable radio":"enable radio");
2321
2322 /* Queue restart only if RF_KILL switch was set to "kill"
2323 * when we loaded driver, and is now set to "enable".
2324 * After we're Alive, RF_KILL gets handled by
2325 * iwl4965_rx_card_state_notif() */
2326 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
2327 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2328 queue_work(priv->workqueue, &priv->restart);
2329 }
2330
2331 handled |= CSR_INT_BIT_RF_KILL;
2332 }
2333
2334 /* Chip got too hot and stopped itself */
2335 if (inta & CSR_INT_BIT_CT_KILL) {
2336 IWL_ERROR("Microcode CT kill error detected.\n");
2337 handled |= CSR_INT_BIT_CT_KILL;
2338 }
2339
2340 /* Error detected by uCode */
2341 if (inta & CSR_INT_BIT_SW_ERR) {
2342 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
2343 inta);
2344 iwl4965_irq_handle_error(priv);
2345 handled |= CSR_INT_BIT_SW_ERR;
2346 }
2347
2348 /* uCode wakes up after power-down sleep */
2349 if (inta & CSR_INT_BIT_WAKEUP) {
2350 IWL_DEBUG_ISR("Wakeup interrupt\n");
2351 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
2352 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
2353 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
2354 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
2355 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
2356 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
2357 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
2358
2359 handled |= CSR_INT_BIT_WAKEUP;
2360 }
2361
2362 /* All uCode command responses, including Tx command responses,
2363 * Rx "responses" (frame-received notification), and other
2364 * notifications from uCode come through here*/
2365 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
2366 iwl_rx_handle(priv);
2367 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
2368 }
2369
2370 if (inta & CSR_INT_BIT_FH_TX) {
2371 IWL_DEBUG_ISR("Tx interrupt\n");
2372 handled |= CSR_INT_BIT_FH_TX;
2373 /* FH finished to write, send event */
2374 priv->ucode_write_complete = 1;
2375 wake_up_interruptible(&priv->wait_command_queue);
2376 }
2377
2378 if (inta & ~handled)
2379 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
2380
2381 if (inta & ~CSR_INI_SET_MASK) {
2382 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
2383 inta & ~CSR_INI_SET_MASK);
2384 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
2385 }
2386
2387 /* Re-enable all interrupts */
2388 /* only Re-enable if diabled by irq */
2389 if (test_bit(STATUS_INT_ENABLED, &priv->status))
2390 iwl4965_enable_interrupts(priv);
2391
2392 #ifdef CONFIG_IWLWIFI_DEBUG
2393 if (priv->debug_level & (IWL_DL_ISR)) {
2394 inta = iwl_read32(priv, CSR_INT);
2395 inta_mask = iwl_read32(priv, CSR_INT_MASK);
2396 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2397 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
2398 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
2399 }
2400 #endif
2401 spin_unlock_irqrestore(&priv->lock, flags);
2402 }
2403
2404 static irqreturn_t iwl4965_isr(int irq, void *data)
2405 {
2406 struct iwl_priv *priv = data;
2407 u32 inta, inta_mask;
2408 u32 inta_fh;
2409 if (!priv)
2410 return IRQ_NONE;
2411
2412 spin_lock(&priv->lock);
2413
2414 /* Disable (but don't clear!) interrupts here to avoid
2415 * back-to-back ISRs and sporadic interrupts from our NIC.
2416 * If we have something to service, the tasklet will re-enable ints.
2417 * If we *don't* have something, we'll re-enable before leaving here. */
2418 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
2419 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
2420
2421 /* Discover which interrupts are active/pending */
2422 inta = iwl_read32(priv, CSR_INT);
2423 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2424
2425 /* Ignore interrupt if there's nothing in NIC to service.
2426 * This may be due to IRQ shared with another device,
2427 * or due to sporadic interrupts thrown from our NIC. */
2428 if (!inta && !inta_fh) {
2429 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
2430 goto none;
2431 }
2432
2433 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
2434 /* Hardware disappeared. It might have already raised
2435 * an interrupt */
2436 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
2437 goto unplugged;
2438 }
2439
2440 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2441 inta, inta_mask, inta_fh);
2442
2443 inta &= ~CSR_INT_BIT_SCD;
2444
2445 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
2446 if (likely(inta || inta_fh))
2447 tasklet_schedule(&priv->irq_tasklet);
2448
2449 unplugged:
2450 spin_unlock(&priv->lock);
2451 return IRQ_HANDLED;
2452
2453 none:
2454 /* re-enable interrupts here since we don't have anything to service. */
2455 /* only Re-enable if diabled by irq */
2456 if (test_bit(STATUS_INT_ENABLED, &priv->status))
2457 iwl4965_enable_interrupts(priv);
2458 spin_unlock(&priv->lock);
2459 return IRQ_NONE;
2460 }
2461
2462 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
2463 * sending probe req. This should be set long enough to hear probe responses
2464 * from more than one AP. */
2465 #define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
2466 #define IWL_ACTIVE_DWELL_TIME_52 (10)
2467
2468 /* For faster active scanning, scan will move to the next channel if fewer than
2469 * PLCP_QUIET_THRESH packets are heard on this channel within
2470 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
2471 * time if it's a quiet channel (nothing responded to our probe, and there's
2472 * no other traffic).
2473 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
2474 #define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
2475 #define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
2476
2477 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
2478 * Must be set longer than active dwell time.
2479 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
2480 #define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
2481 #define IWL_PASSIVE_DWELL_TIME_52 (10)
2482 #define IWL_PASSIVE_DWELL_BASE (100)
2483 #define IWL_CHANNEL_TUNE_TIME 5
2484
2485 static inline u16 iwl4965_get_active_dwell_time(struct iwl_priv *priv,
2486 enum ieee80211_band band)
2487 {
2488 if (band == IEEE80211_BAND_5GHZ)
2489 return IWL_ACTIVE_DWELL_TIME_52;
2490 else
2491 return IWL_ACTIVE_DWELL_TIME_24;
2492 }
2493
2494 static u16 iwl4965_get_passive_dwell_time(struct iwl_priv *priv,
2495 enum ieee80211_band band)
2496 {
2497 u16 active = iwl4965_get_active_dwell_time(priv, band);
2498 u16 passive = (band != IEEE80211_BAND_5GHZ) ?
2499 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
2500 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
2501
2502 if (iwl_is_associated(priv)) {
2503 /* If we're associated, we clamp the maximum passive
2504 * dwell time to be 98% of the beacon interval (minus
2505 * 2 * channel tune time) */
2506 passive = priv->beacon_int;
2507 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
2508 passive = IWL_PASSIVE_DWELL_BASE;
2509 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
2510 }
2511
2512 if (passive <= active)
2513 passive = active + 1;
2514
2515 return passive;
2516 }
2517
2518 static int iwl4965_get_channels_for_scan(struct iwl_priv *priv,
2519 enum ieee80211_band band,
2520 u8 is_active, u8 direct_mask,
2521 struct iwl4965_scan_channel *scan_ch)
2522 {
2523 const struct ieee80211_channel *channels = NULL;
2524 const struct ieee80211_supported_band *sband;
2525 const struct iwl_channel_info *ch_info;
2526 u16 passive_dwell = 0;
2527 u16 active_dwell = 0;
2528 int added, i;
2529
2530 sband = iwl_get_hw_mode(priv, band);
2531 if (!sband)
2532 return 0;
2533
2534 channels = sband->channels;
2535
2536 active_dwell = iwl4965_get_active_dwell_time(priv, band);
2537 passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
2538
2539 for (i = 0, added = 0; i < sband->n_channels; i++) {
2540 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
2541 continue;
2542
2543 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
2544
2545 ch_info = iwl_get_channel_info(priv, band,
2546 scan_ch->channel);
2547 if (!is_channel_valid(ch_info)) {
2548 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
2549 scan_ch->channel);
2550 continue;
2551 }
2552
2553 if (!is_active || is_channel_passive(ch_info) ||
2554 (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
2555 scan_ch->type = 0; /* passive */
2556 else
2557 scan_ch->type = 1; /* active */
2558
2559 if (scan_ch->type & 1)
2560 scan_ch->type |= (direct_mask << 1);
2561
2562 scan_ch->active_dwell = cpu_to_le16(active_dwell);
2563 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
2564
2565 /* Set txpower levels to defaults */
2566 scan_ch->tpc.dsp_atten = 110;
2567 /* scan_pwr_info->tpc.dsp_atten; */
2568
2569 /*scan_pwr_info->tpc.tx_gain; */
2570 if (band == IEEE80211_BAND_5GHZ)
2571 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
2572 else {
2573 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
2574 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
2575 * power level:
2576 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
2577 */
2578 }
2579
2580 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
2581 scan_ch->channel,
2582 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
2583 (scan_ch->type & 1) ?
2584 active_dwell : passive_dwell);
2585
2586 scan_ch++;
2587 added++;
2588 }
2589
2590 IWL_DEBUG_SCAN("total channels to scan %d \n", added);
2591 return added;
2592 }
2593
2594 /******************************************************************************
2595 *
2596 * uCode download functions
2597 *
2598 ******************************************************************************/
2599
2600 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
2601 {
2602 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
2603 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
2604 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2605 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
2606 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2607 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
2608 }
2609
2610 static void iwl4965_nic_start(struct iwl_priv *priv)
2611 {
2612 /* Remove all resets to allow NIC to operate */
2613 iwl_write32(priv, CSR_RESET, 0);
2614 }
2615
2616
2617 /**
2618 * iwl4965_read_ucode - Read uCode images from disk file.
2619 *
2620 * Copy into buffers for card to fetch via bus-mastering
2621 */
2622 static int iwl4965_read_ucode(struct iwl_priv *priv)
2623 {
2624 struct iwl4965_ucode *ucode;
2625 int ret;
2626 const struct firmware *ucode_raw;
2627 const char *name = priv->cfg->fw_name;
2628 u8 *src;
2629 size_t len;
2630 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
2631
2632 /* Ask kernel firmware_class module to get the boot firmware off disk.
2633 * request_firmware() is synchronous, file is in memory on return. */
2634 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
2635 if (ret < 0) {
2636 IWL_ERROR("%s firmware file req failed: Reason %d\n",
2637 name, ret);
2638 goto error;
2639 }
2640
2641 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
2642 name, ucode_raw->size);
2643
2644 /* Make sure that we got at least our header! */
2645 if (ucode_raw->size < sizeof(*ucode)) {
2646 IWL_ERROR("File size way too small!\n");
2647 ret = -EINVAL;
2648 goto err_release;
2649 }
2650
2651 /* Data from ucode file: header followed by uCode images */
2652 ucode = (void *)ucode_raw->data;
2653
2654 ver = le32_to_cpu(ucode->ver);
2655 inst_size = le32_to_cpu(ucode->inst_size);
2656 data_size = le32_to_cpu(ucode->data_size);
2657 init_size = le32_to_cpu(ucode->init_size);
2658 init_data_size = le32_to_cpu(ucode->init_data_size);
2659 boot_size = le32_to_cpu(ucode->boot_size);
2660
2661 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
2662 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
2663 inst_size);
2664 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
2665 data_size);
2666 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
2667 init_size);
2668 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
2669 init_data_size);
2670 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
2671 boot_size);
2672
2673 /* Verify size of file vs. image size info in file's header */
2674 if (ucode_raw->size < sizeof(*ucode) +
2675 inst_size + data_size + init_size +
2676 init_data_size + boot_size) {
2677
2678 IWL_DEBUG_INFO("uCode file size %d too small\n",
2679 (int)ucode_raw->size);
2680 ret = -EINVAL;
2681 goto err_release;
2682 }
2683
2684 /* Verify that uCode images will fit in card's SRAM */
2685 if (inst_size > priv->hw_params.max_inst_size) {
2686 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
2687 inst_size);
2688 ret = -EINVAL;
2689 goto err_release;
2690 }
2691
2692 if (data_size > priv->hw_params.max_data_size) {
2693 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
2694 data_size);
2695 ret = -EINVAL;
2696 goto err_release;
2697 }
2698 if (init_size > priv->hw_params.max_inst_size) {
2699 IWL_DEBUG_INFO
2700 ("uCode init instr len %d too large to fit in\n",
2701 init_size);
2702 ret = -EINVAL;
2703 goto err_release;
2704 }
2705 if (init_data_size > priv->hw_params.max_data_size) {
2706 IWL_DEBUG_INFO
2707 ("uCode init data len %d too large to fit in\n",
2708 init_data_size);
2709 ret = -EINVAL;
2710 goto err_release;
2711 }
2712 if (boot_size > priv->hw_params.max_bsm_size) {
2713 IWL_DEBUG_INFO
2714 ("uCode boot instr len %d too large to fit in\n",
2715 boot_size);
2716 ret = -EINVAL;
2717 goto err_release;
2718 }
2719
2720 /* Allocate ucode buffers for card's bus-master loading ... */
2721
2722 /* Runtime instructions and 2 copies of data:
2723 * 1) unmodified from disk
2724 * 2) backup cache for save/restore during power-downs */
2725 priv->ucode_code.len = inst_size;
2726 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2727
2728 priv->ucode_data.len = data_size;
2729 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2730
2731 priv->ucode_data_backup.len = data_size;
2732 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2733
2734 /* Initialization instructions and data */
2735 if (init_size && init_data_size) {
2736 priv->ucode_init.len = init_size;
2737 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2738
2739 priv->ucode_init_data.len = init_data_size;
2740 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2741
2742 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2743 goto err_pci_alloc;
2744 }
2745
2746 /* Bootstrap (instructions only, no data) */
2747 if (boot_size) {
2748 priv->ucode_boot.len = boot_size;
2749 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2750
2751 if (!priv->ucode_boot.v_addr)
2752 goto err_pci_alloc;
2753 }
2754
2755 /* Copy images into buffers for card's bus-master reads ... */
2756
2757 /* Runtime instructions (first block of data in file) */
2758 src = &ucode->data[0];
2759 len = priv->ucode_code.len;
2760 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
2761 memcpy(priv->ucode_code.v_addr, src, len);
2762 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2763 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2764
2765 /* Runtime data (2nd block)
2766 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
2767 src = &ucode->data[inst_size];
2768 len = priv->ucode_data.len;
2769 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
2770 memcpy(priv->ucode_data.v_addr, src, len);
2771 memcpy(priv->ucode_data_backup.v_addr, src, len);
2772
2773 /* Initialization instructions (3rd block) */
2774 if (init_size) {
2775 src = &ucode->data[inst_size + data_size];
2776 len = priv->ucode_init.len;
2777 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
2778 len);
2779 memcpy(priv->ucode_init.v_addr, src, len);
2780 }
2781
2782 /* Initialization data (4th block) */
2783 if (init_data_size) {
2784 src = &ucode->data[inst_size + data_size + init_size];
2785 len = priv->ucode_init_data.len;
2786 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
2787 len);
2788 memcpy(priv->ucode_init_data.v_addr, src, len);
2789 }
2790
2791 /* Bootstrap instructions (5th block) */
2792 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
2793 len = priv->ucode_boot.len;
2794 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
2795 memcpy(priv->ucode_boot.v_addr, src, len);
2796
2797 /* We have our copies now, allow OS release its copies */
2798 release_firmware(ucode_raw);
2799 return 0;
2800
2801 err_pci_alloc:
2802 IWL_ERROR("failed to allocate pci memory\n");
2803 ret = -ENOMEM;
2804 iwl4965_dealloc_ucode_pci(priv);
2805
2806 err_release:
2807 release_firmware(ucode_raw);
2808
2809 error:
2810 return ret;
2811 }
2812
2813 /**
2814 * iwl_alive_start - called after REPLY_ALIVE notification received
2815 * from protocol/runtime uCode (initialization uCode's
2816 * Alive gets handled by iwl_init_alive_start()).
2817 */
2818 static void iwl_alive_start(struct iwl_priv *priv)
2819 {
2820 int ret = 0;
2821
2822 IWL_DEBUG_INFO("Runtime Alive received.\n");
2823
2824 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2825 /* We had an error bringing up the hardware, so take it
2826 * all the way back down so we can try again */
2827 IWL_DEBUG_INFO("Alive failed.\n");
2828 goto restart;
2829 }
2830
2831 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2832 * This is a paranoid check, because we would not have gotten the
2833 * "runtime" alive if code weren't properly loaded. */
2834 if (iwl_verify_ucode(priv)) {
2835 /* Runtime instruction load was bad;
2836 * take it all the way back down so we can try again */
2837 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
2838 goto restart;
2839 }
2840
2841 iwlcore_clear_stations_table(priv);
2842 ret = priv->cfg->ops->lib->alive_notify(priv);
2843 if (ret) {
2844 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
2845 ret);
2846 goto restart;
2847 }
2848
2849 /* After the ALIVE response, we can send host commands to 4965 uCode */
2850 set_bit(STATUS_ALIVE, &priv->status);
2851
2852 /* Clear out the uCode error bit if it is set */
2853 clear_bit(STATUS_FW_ERROR, &priv->status);
2854
2855 if (iwl_is_rfkill(priv))
2856 return;
2857
2858 ieee80211_wake_queues(priv->hw);
2859
2860 priv->active_rate = priv->rates_mask;
2861 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2862
2863 if (iwl_is_associated(priv)) {
2864 struct iwl_rxon_cmd *active_rxon =
2865 (struct iwl_rxon_cmd *)&priv->active_rxon;
2866
2867 memcpy(&priv->staging_rxon, &priv->active_rxon,
2868 sizeof(priv->staging_rxon));
2869 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2870 } else {
2871 /* Initialize our rx_config data */
2872 iwl4965_connection_init_rx_config(priv);
2873 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2874 }
2875
2876 /* Configure Bluetooth device coexistence support */
2877 iwl4965_send_bt_config(priv);
2878
2879 iwl_reset_run_time_calib(priv);
2880
2881 /* Configure the adapter for unassociated operation */
2882 iwl4965_commit_rxon(priv);
2883
2884 /* At this point, the NIC is initialized and operational */
2885 iwl4965_rf_kill_ct_config(priv);
2886
2887 iwl_leds_register(priv);
2888
2889 IWL_DEBUG_INFO("ALIVE processing complete.\n");
2890 set_bit(STATUS_READY, &priv->status);
2891 wake_up_interruptible(&priv->wait_command_queue);
2892
2893 if (priv->error_recovering)
2894 iwl4965_error_recovery(priv);
2895
2896 iwlcore_low_level_notify(priv, IWLCORE_START_EVT);
2897 ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2898 return;
2899
2900 restart:
2901 queue_work(priv->workqueue, &priv->restart);
2902 }
2903
2904 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv);
2905
2906 static void __iwl4965_down(struct iwl_priv *priv)
2907 {
2908 unsigned long flags;
2909 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2910
2911 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2912
2913 if (!exit_pending)
2914 set_bit(STATUS_EXIT_PENDING, &priv->status);
2915
2916 iwl_leds_unregister(priv);
2917
2918 iwlcore_low_level_notify(priv, IWLCORE_STOP_EVT);
2919
2920 iwlcore_clear_stations_table(priv);
2921
2922 /* Unblock any waiting calls */
2923 wake_up_interruptible_all(&priv->wait_command_queue);
2924
2925 /* Wipe out the EXIT_PENDING status bit if we are not actually
2926 * exiting the module */
2927 if (!exit_pending)
2928 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2929
2930 /* stop and reset the on-board processor */
2931 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2932
2933 /* tell the device to stop sending interrupts */
2934 spin_lock_irqsave(&priv->lock, flags);
2935 iwl4965_disable_interrupts(priv);
2936 spin_unlock_irqrestore(&priv->lock, flags);
2937 iwl_synchronize_irq(priv);
2938
2939 if (priv->mac80211_registered)
2940 ieee80211_stop_queues(priv->hw);
2941
2942 /* If we have not previously called iwl4965_init() then
2943 * clear all bits but the RF Kill and SUSPEND bits and return */
2944 if (!iwl_is_init(priv)) {
2945 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2946 STATUS_RF_KILL_HW |
2947 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2948 STATUS_RF_KILL_SW |
2949 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2950 STATUS_GEO_CONFIGURED |
2951 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2952 STATUS_IN_SUSPEND;
2953 goto exit;
2954 }
2955
2956 /* ...otherwise clear out all the status bits but the RF Kill and
2957 * SUSPEND bits and continue taking the NIC down. */
2958 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2959 STATUS_RF_KILL_HW |
2960 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2961 STATUS_RF_KILL_SW |
2962 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2963 STATUS_GEO_CONFIGURED |
2964 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2965 STATUS_IN_SUSPEND |
2966 test_bit(STATUS_FW_ERROR, &priv->status) <<
2967 STATUS_FW_ERROR;
2968
2969 spin_lock_irqsave(&priv->lock, flags);
2970 iwl_clear_bit(priv, CSR_GP_CNTRL,
2971 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2972 spin_unlock_irqrestore(&priv->lock, flags);
2973
2974 iwl_txq_ctx_stop(priv);
2975 iwl_rxq_stop(priv);
2976
2977 spin_lock_irqsave(&priv->lock, flags);
2978 if (!iwl_grab_nic_access(priv)) {
2979 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2980 APMG_CLK_VAL_DMA_CLK_RQT);
2981 iwl_release_nic_access(priv);
2982 }
2983 spin_unlock_irqrestore(&priv->lock, flags);
2984
2985 udelay(5);
2986
2987 /* FIXME: apm_ops.suspend(priv) */
2988 priv->cfg->ops->lib->apm_ops.reset(priv);
2989 priv->cfg->ops->lib->free_shared_mem(priv);
2990
2991 exit:
2992 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2993
2994 if (priv->ibss_beacon)
2995 dev_kfree_skb(priv->ibss_beacon);
2996 priv->ibss_beacon = NULL;
2997
2998 /* clear out any free frames */
2999 iwl_clear_free_frames(priv);
3000 }
3001
3002 static void iwl4965_down(struct iwl_priv *priv)
3003 {
3004 mutex_lock(&priv->mutex);
3005 __iwl4965_down(priv);
3006 mutex_unlock(&priv->mutex);
3007
3008 iwl4965_cancel_deferred_work(priv);
3009 }
3010
3011 #define MAX_HW_RESTARTS 5
3012
3013 static int __iwl4965_up(struct iwl_priv *priv)
3014 {
3015 int i;
3016 int ret;
3017
3018 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3019 IWL_WARNING("Exit pending; will not bring the NIC up\n");
3020 return -EIO;
3021 }
3022
3023 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
3024 IWL_WARNING("Radio disabled by SW RF kill (module "
3025 "parameter)\n");
3026 iwl_rfkill_set_hw_state(priv);
3027 return -ENODEV;
3028 }
3029
3030 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
3031 IWL_ERROR("ucode not available for device bringup\n");
3032 return -EIO;
3033 }
3034
3035 /* If platform's RF_KILL switch is NOT set to KILL */
3036 if (iwl_read32(priv, CSR_GP_CNTRL) &
3037 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3038 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3039 else {
3040 set_bit(STATUS_RF_KILL_HW, &priv->status);
3041 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
3042 iwl_rfkill_set_hw_state(priv);
3043 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
3044 return -ENODEV;
3045 }
3046 }
3047
3048 iwl_rfkill_set_hw_state(priv);
3049 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3050
3051 ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
3052 if (ret) {
3053 IWL_ERROR("Unable to allocate shared memory\n");
3054 return ret;
3055 }
3056
3057 ret = iwl_hw_nic_init(priv);
3058 if (ret) {
3059 IWL_ERROR("Unable to init nic\n");
3060 return ret;
3061 }
3062
3063 /* make sure rfkill handshake bits are cleared */
3064 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3065 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3066 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3067
3068 /* clear (again), then enable host interrupts */
3069 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3070 iwl4965_enable_interrupts(priv);
3071
3072 /* really make sure rfkill handshake bits are cleared */
3073 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3074 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3075
3076 /* Copy original ucode data image from disk into backup cache.
3077 * This will be used to initialize the on-board processor's
3078 * data SRAM for a clean start when the runtime program first loads. */
3079 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
3080 priv->ucode_data.len);
3081
3082 /* We return success when we resume from suspend and rf_kill is on. */
3083 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
3084 return 0;
3085
3086 for (i = 0; i < MAX_HW_RESTARTS; i++) {
3087
3088 iwlcore_clear_stations_table(priv);
3089
3090 /* load bootstrap state machine,
3091 * load bootstrap program into processor's memory,
3092 * prepare to load the "initialize" uCode */
3093 ret = priv->cfg->ops->lib->load_ucode(priv);
3094
3095 if (ret) {
3096 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
3097 continue;
3098 }
3099
3100 /* start card; "initialize" will load runtime ucode */
3101 iwl4965_nic_start(priv);
3102
3103 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
3104
3105 return 0;
3106 }
3107
3108 set_bit(STATUS_EXIT_PENDING, &priv->status);
3109 __iwl4965_down(priv);
3110
3111 /* tried to restart and config the device for as long as our
3112 * patience could withstand */
3113 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
3114 return -EIO;
3115 }
3116
3117
3118 /*****************************************************************************
3119 *
3120 * Workqueue callbacks
3121 *
3122 *****************************************************************************/
3123
3124 static void iwl_bg_init_alive_start(struct work_struct *data)
3125 {
3126 struct iwl_priv *priv =
3127 container_of(data, struct iwl_priv, init_alive_start.work);
3128
3129 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3130 return;
3131
3132 mutex_lock(&priv->mutex);
3133 priv->cfg->ops->lib->init_alive_start(priv);
3134 mutex_unlock(&priv->mutex);
3135 }
3136
3137 static void iwl_bg_alive_start(struct work_struct *data)
3138 {
3139 struct iwl_priv *priv =
3140 container_of(data, struct iwl_priv, alive_start.work);
3141
3142 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3143 return;
3144
3145 mutex_lock(&priv->mutex);
3146 iwl_alive_start(priv);
3147 mutex_unlock(&priv->mutex);
3148 }
3149
3150 static void iwl4965_bg_rf_kill(struct work_struct *work)
3151 {
3152 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
3153
3154 wake_up_interruptible(&priv->wait_command_queue);
3155
3156 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3157 return;
3158
3159 mutex_lock(&priv->mutex);
3160
3161 if (!iwl_is_rfkill(priv)) {
3162 IWL_DEBUG(IWL_DL_RF_KILL,
3163 "HW and/or SW RF Kill no longer active, restarting "
3164 "device\n");
3165 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
3166 queue_work(priv->workqueue, &priv->restart);
3167 } else {
3168 /* make sure mac80211 stop sending Tx frame */
3169 if (priv->mac80211_registered)
3170 ieee80211_stop_queues(priv->hw);
3171
3172 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
3173 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3174 "disabled by SW switch\n");
3175 else
3176 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
3177 "Kill switch must be turned off for "
3178 "wireless networking to work.\n");
3179 }
3180 iwl_rfkill_set_hw_state(priv);
3181
3182 mutex_unlock(&priv->mutex);
3183 }
3184
3185 static void iwl4965_bg_set_monitor(struct work_struct *work)
3186 {
3187 struct iwl_priv *priv = container_of(work,
3188 struct iwl_priv, set_monitor);
3189
3190 IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
3191
3192 mutex_lock(&priv->mutex);
3193
3194 if (!iwl_is_ready(priv))
3195 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
3196 else
3197 if (iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR) != 0)
3198 IWL_ERROR("iwl4965_set_mode() failed\n");
3199
3200 mutex_unlock(&priv->mutex);
3201 }
3202
3203 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
3204
3205 static void iwl4965_bg_scan_check(struct work_struct *data)
3206 {
3207 struct iwl_priv *priv =
3208 container_of(data, struct iwl_priv, scan_check.work);
3209
3210 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3211 return;
3212
3213 mutex_lock(&priv->mutex);
3214 if (test_bit(STATUS_SCANNING, &priv->status) ||
3215 test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3216 IWL_DEBUG(IWL_DL_SCAN, "Scan completion watchdog resetting "
3217 "adapter (%dms)\n",
3218 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
3219
3220 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
3221 iwl4965_send_scan_abort(priv);
3222 }
3223 mutex_unlock(&priv->mutex);
3224 }
3225
3226 static void iwl4965_bg_request_scan(struct work_struct *data)
3227 {
3228 struct iwl_priv *priv =
3229 container_of(data, struct iwl_priv, request_scan);
3230 struct iwl_host_cmd cmd = {
3231 .id = REPLY_SCAN_CMD,
3232 .len = sizeof(struct iwl4965_scan_cmd),
3233 .meta.flags = CMD_SIZE_HUGE,
3234 };
3235 struct iwl4965_scan_cmd *scan;
3236 struct ieee80211_conf *conf = NULL;
3237 u16 cmd_len;
3238 enum ieee80211_band band;
3239 u8 direct_mask;
3240 int ret = 0;
3241
3242 conf = ieee80211_get_hw_conf(priv->hw);
3243
3244 mutex_lock(&priv->mutex);
3245
3246 if (!iwl_is_ready(priv)) {
3247 IWL_WARNING("request scan called when driver not ready.\n");
3248 goto done;
3249 }
3250
3251 /* Make sure the scan wasn't cancelled before this queued work
3252 * was given the chance to run... */
3253 if (!test_bit(STATUS_SCANNING, &priv->status))
3254 goto done;
3255
3256 /* This should never be called or scheduled if there is currently
3257 * a scan active in the hardware. */
3258 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
3259 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
3260 "Ignoring second request.\n");
3261 ret = -EIO;
3262 goto done;
3263 }
3264
3265 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3266 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
3267 goto done;
3268 }
3269
3270 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3271 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
3272 goto done;
3273 }
3274
3275 if (iwl_is_rfkill(priv)) {
3276 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
3277 goto done;
3278 }
3279
3280 if (!test_bit(STATUS_READY, &priv->status)) {
3281 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
3282 goto done;
3283 }
3284
3285 if (!priv->scan_bands) {
3286 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
3287 goto done;
3288 }
3289
3290 if (!priv->scan) {
3291 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
3292 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
3293 if (!priv->scan) {
3294 ret = -ENOMEM;
3295 goto done;
3296 }
3297 }
3298 scan = priv->scan;
3299 memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
3300
3301 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
3302 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
3303
3304 if (iwl_is_associated(priv)) {
3305 u16 interval = 0;
3306 u32 extra;
3307 u32 suspend_time = 100;
3308 u32 scan_suspend_time = 100;
3309 unsigned long flags;
3310
3311 IWL_DEBUG_INFO("Scanning while associated...\n");
3312
3313 spin_lock_irqsave(&priv->lock, flags);
3314 interval = priv->beacon_int;
3315 spin_unlock_irqrestore(&priv->lock, flags);
3316
3317 scan->suspend_time = 0;
3318 scan->max_out_time = cpu_to_le32(200 * 1024);
3319 if (!interval)
3320 interval = suspend_time;
3321
3322 extra = (suspend_time / interval) << 22;
3323 scan_suspend_time = (extra |
3324 ((suspend_time % interval) * 1024));
3325 scan->suspend_time = cpu_to_le32(scan_suspend_time);
3326 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
3327 scan_suspend_time, interval);
3328 }
3329
3330 /* We should add the ability for user to lock to PASSIVE ONLY */
3331 if (priv->one_direct_scan) {
3332 IWL_DEBUG_SCAN
3333 ("Kicking off one direct scan for '%s'\n",
3334 iwl4965_escape_essid(priv->direct_ssid,
3335 priv->direct_ssid_len));
3336 scan->direct_scan[0].id = WLAN_EID_SSID;
3337 scan->direct_scan[0].len = priv->direct_ssid_len;
3338 memcpy(scan->direct_scan[0].ssid,
3339 priv->direct_ssid, priv->direct_ssid_len);
3340 direct_mask = 1;
3341 } else if (!iwl_is_associated(priv) && priv->essid_len) {
3342 IWL_DEBUG_SCAN
3343 ("Kicking off one direct scan for '%s' when not associated\n",
3344 iwl4965_escape_essid(priv->essid, priv->essid_len));
3345 scan->direct_scan[0].id = WLAN_EID_SSID;
3346 scan->direct_scan[0].len = priv->essid_len;
3347 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
3348 direct_mask = 1;
3349 } else {
3350 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
3351 direct_mask = 0;
3352 }
3353
3354 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
3355 scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
3356 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
3357
3358
3359 switch (priv->scan_bands) {
3360 case 2:
3361 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
3362 scan->tx_cmd.rate_n_flags =
3363 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
3364 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
3365
3366 scan->good_CRC_th = 0;
3367 band = IEEE80211_BAND_2GHZ;
3368 break;
3369
3370 case 1:
3371 scan->tx_cmd.rate_n_flags =
3372 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
3373 RATE_MCS_ANT_B_MSK);
3374 scan->good_CRC_th = IWL_GOOD_CRC_TH;
3375 band = IEEE80211_BAND_5GHZ;
3376 break;
3377
3378 default:
3379 IWL_WARNING("Invalid scan band count\n");
3380 goto done;
3381 }
3382
3383 /* We don't build a direct scan probe request; the uCode will do
3384 * that based on the direct_mask added to each channel entry */
3385 cmd_len = iwl4965_fill_probe_req(priv, band,
3386 (struct ieee80211_mgmt *)scan->data,
3387 IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
3388
3389 scan->tx_cmd.len = cpu_to_le16(cmd_len);
3390 /* select Rx chains */
3391
3392 /* Force use of chains B and C (0x6) for scan Rx.
3393 * Avoid A (0x1) because of its off-channel reception on A-band.
3394 * MIMO is not used here, but value is required to make uCode happy. */
3395 scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
3396 cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
3397 (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
3398 (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
3399
3400 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
3401 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
3402
3403 if (direct_mask)
3404 scan->channel_count =
3405 iwl4965_get_channels_for_scan(
3406 priv, band, 1, /* active */
3407 direct_mask,
3408 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
3409 else
3410 scan->channel_count =
3411 iwl4965_get_channels_for_scan(
3412 priv, band, 0, /* passive */
3413 direct_mask,
3414 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
3415
3416 scan->filter_flags |= (RXON_FILTER_ACCEPT_GRP_MSK |
3417 RXON_FILTER_BCON_AWARE_MSK);
3418 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
3419 scan->channel_count * sizeof(struct iwl4965_scan_channel);
3420 cmd.data = scan;
3421 scan->len = cpu_to_le16(cmd.len);
3422
3423 set_bit(STATUS_SCAN_HW, &priv->status);
3424 ret = iwl_send_cmd_sync(priv, &cmd);
3425 if (ret)
3426 goto done;
3427
3428 queue_delayed_work(priv->workqueue, &priv->scan_check,
3429 IWL_SCAN_CHECK_WATCHDOG);
3430
3431 mutex_unlock(&priv->mutex);
3432 return;
3433
3434 done:
3435 /* inform mac80211 scan aborted */
3436 queue_work(priv->workqueue, &priv->scan_completed);
3437 mutex_unlock(&priv->mutex);
3438 }
3439
3440 static void iwl4965_bg_up(struct work_struct *data)
3441 {
3442 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
3443
3444 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3445 return;
3446
3447 mutex_lock(&priv->mutex);
3448 __iwl4965_up(priv);
3449 mutex_unlock(&priv->mutex);
3450 }
3451
3452 static void iwl4965_bg_restart(struct work_struct *data)
3453 {
3454 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
3455
3456 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3457 return;
3458
3459 iwl4965_down(priv);
3460 queue_work(priv->workqueue, &priv->up);
3461 }
3462
3463 static void iwl4965_bg_rx_replenish(struct work_struct *data)
3464 {
3465 struct iwl_priv *priv =
3466 container_of(data, struct iwl_priv, rx_replenish);
3467
3468 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3469 return;
3470
3471 mutex_lock(&priv->mutex);
3472 iwl_rx_replenish(priv);
3473 mutex_unlock(&priv->mutex);
3474 }
3475
3476 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3477
3478 static void iwl4965_post_associate(struct iwl_priv *priv)
3479 {
3480 struct ieee80211_conf *conf = NULL;
3481 int ret = 0;
3482 DECLARE_MAC_BUF(mac);
3483
3484 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
3485 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
3486 return;
3487 }
3488
3489 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
3490 priv->assoc_id,
3491 print_mac(mac, priv->active_rxon.bssid_addr));
3492
3493
3494 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3495 return;
3496
3497
3498 if (!priv->vif || !priv->is_open)
3499 return;
3500
3501 iwl4965_scan_cancel_timeout(priv, 200);
3502
3503 conf = ieee80211_get_hw_conf(priv->hw);
3504
3505 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3506 iwl4965_commit_rxon(priv);
3507
3508 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
3509 iwl4965_setup_rxon_timing(priv);
3510 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3511 sizeof(priv->rxon_timing), &priv->rxon_timing);
3512 if (ret)
3513 IWL_WARNING("REPLY_RXON_TIMING failed - "
3514 "Attempting to continue.\n");
3515
3516 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3517
3518 #ifdef CONFIG_IWL4965_HT
3519 if (priv->current_ht_config.is_ht)
3520 iwl_set_rxon_ht(priv, &priv->current_ht_config);
3521 #endif /* CONFIG_IWL4965_HT*/
3522 iwl_set_rxon_chain(priv);
3523 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3524
3525 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
3526 priv->assoc_id, priv->beacon_int);
3527
3528 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3529 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3530 else
3531 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3532
3533 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3534 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
3535 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3536 else
3537 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3538
3539 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
3540 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3541
3542 }
3543
3544 iwl4965_commit_rxon(priv);
3545
3546 switch (priv->iw_mode) {
3547 case IEEE80211_IF_TYPE_STA:
3548 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
3549 break;
3550
3551 case IEEE80211_IF_TYPE_IBSS:
3552
3553 /* clear out the station table */
3554 iwlcore_clear_stations_table(priv);
3555
3556 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
3557 iwl_rxon_add_station(priv, priv->bssid, 0);
3558 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
3559 iwl4965_send_beacon_cmd(priv);
3560
3561 break;
3562
3563 default:
3564 IWL_ERROR("%s Should not be called in %d mode\n",
3565 __FUNCTION__, priv->iw_mode);
3566 break;
3567 }
3568
3569 iwl4965_sequence_reset(priv);
3570
3571 /* Enable Rx differential gain and sensitivity calibrations */
3572 iwl_chain_noise_reset(priv);
3573 priv->start_calib = 1;
3574
3575 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
3576 priv->assoc_station_added = 1;
3577
3578 iwl4965_activate_qos(priv, 0);
3579
3580 iwl_power_update_mode(priv, 0);
3581 /* we have just associated, don't start scan too early */
3582 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
3583 }
3584
3585
3586 static void iwl4965_bg_post_associate(struct work_struct *data)
3587 {
3588 struct iwl_priv *priv = container_of(data, struct iwl_priv,
3589 post_associate.work);
3590
3591 mutex_lock(&priv->mutex);
3592 iwl4965_post_associate(priv);
3593 mutex_unlock(&priv->mutex);
3594
3595 }
3596
3597 static void iwl4965_bg_abort_scan(struct work_struct *work)
3598 {
3599 struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
3600
3601 if (!iwl_is_ready(priv))
3602 return;
3603
3604 mutex_lock(&priv->mutex);
3605
3606 set_bit(STATUS_SCAN_ABORTING, &priv->status);
3607 iwl4965_send_scan_abort(priv);
3608
3609 mutex_unlock(&priv->mutex);
3610 }
3611
3612 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
3613
3614 static void iwl4965_bg_scan_completed(struct work_struct *work)
3615 {
3616 struct iwl_priv *priv =
3617 container_of(work, struct iwl_priv, scan_completed);
3618
3619 IWL_DEBUG(IWL_DL_SCAN, "SCAN complete scan\n");
3620
3621 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3622 return;
3623
3624 if (test_bit(STATUS_CONF_PENDING, &priv->status))
3625 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
3626
3627 ieee80211_scan_completed(priv->hw);
3628
3629 /* Since setting the TXPOWER may have been deferred while
3630 * performing the scan, fire one off */
3631 mutex_lock(&priv->mutex);
3632 iwl4965_hw_reg_send_txpower(priv);
3633 mutex_unlock(&priv->mutex);
3634 }
3635
3636 /*****************************************************************************
3637 *
3638 * mac80211 entry point functions
3639 *
3640 *****************************************************************************/
3641
3642 #define UCODE_READY_TIMEOUT (2 * HZ)
3643
3644 static int iwl4965_mac_start(struct ieee80211_hw *hw)
3645 {
3646 struct iwl_priv *priv = hw->priv;
3647 int ret;
3648
3649 IWL_DEBUG_MAC80211("enter\n");
3650
3651 if (pci_enable_device(priv->pci_dev)) {
3652 IWL_ERROR("Fail to pci_enable_device\n");
3653 return -ENODEV;
3654 }
3655 pci_restore_state(priv->pci_dev);
3656 pci_enable_msi(priv->pci_dev);
3657
3658 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
3659 DRV_NAME, priv);
3660 if (ret) {
3661 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
3662 goto out_disable_msi;
3663 }
3664
3665 /* we should be verifying the device is ready to be opened */
3666 mutex_lock(&priv->mutex);
3667
3668 memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
3669 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3670 * ucode filename and max sizes are card-specific. */
3671
3672 if (!priv->ucode_code.len) {
3673 ret = iwl4965_read_ucode(priv);
3674 if (ret) {
3675 IWL_ERROR("Could not read microcode: %d\n", ret);
3676 mutex_unlock(&priv->mutex);
3677 goto out_release_irq;
3678 }
3679 }
3680
3681 ret = __iwl4965_up(priv);
3682
3683 mutex_unlock(&priv->mutex);
3684
3685 if (ret)
3686 goto out_release_irq;
3687
3688 IWL_DEBUG_INFO("Start UP work done.\n");
3689
3690 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
3691 return 0;
3692
3693 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
3694 * mac80211 will not be run successfully. */
3695 if (priv->ucode_type == UCODE_RT) {
3696 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3697 test_bit(STATUS_READY, &priv->status),
3698 UCODE_READY_TIMEOUT);
3699 if (!ret) {
3700 if (!test_bit(STATUS_READY, &priv->status)) {
3701 IWL_ERROR("START_ALIVE timeout after %dms.\n",
3702 jiffies_to_msecs(UCODE_READY_TIMEOUT));
3703 ret = -ETIMEDOUT;
3704 goto out_release_irq;
3705 }
3706 }
3707
3708 priv->is_open = 1;
3709 }
3710 IWL_DEBUG_MAC80211("leave\n");
3711 return 0;
3712
3713 out_release_irq:
3714 free_irq(priv->pci_dev->irq, priv);
3715 out_disable_msi:
3716 pci_disable_msi(priv->pci_dev);
3717 pci_disable_device(priv->pci_dev);
3718 priv->is_open = 0;
3719 IWL_DEBUG_MAC80211("leave - failed\n");
3720 return ret;
3721 }
3722
3723 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
3724 {
3725 struct iwl_priv *priv = hw->priv;
3726
3727 IWL_DEBUG_MAC80211("enter\n");
3728
3729 if (!priv->is_open) {
3730 IWL_DEBUG_MAC80211("leave - skip\n");
3731 return;
3732 }
3733
3734 priv->is_open = 0;
3735
3736 if (iwl_is_ready_rf(priv)) {
3737 /* stop mac, cancel any scan request and clear
3738 * RXON_FILTER_ASSOC_MSK BIT
3739 */
3740 mutex_lock(&priv->mutex);
3741 iwl4965_scan_cancel_timeout(priv, 100);
3742 cancel_delayed_work(&priv->post_associate);
3743 mutex_unlock(&priv->mutex);
3744 }
3745
3746 iwl4965_down(priv);
3747
3748 flush_workqueue(priv->workqueue);
3749 free_irq(priv->pci_dev->irq, priv);
3750 pci_disable_msi(priv->pci_dev);
3751 pci_save_state(priv->pci_dev);
3752 pci_disable_device(priv->pci_dev);
3753
3754 IWL_DEBUG_MAC80211("leave\n");
3755 }
3756
3757 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3758 {
3759 struct iwl_priv *priv = hw->priv;
3760
3761 IWL_DEBUG_MAC80211("enter\n");
3762
3763 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
3764 IWL_DEBUG_MAC80211("leave - monitor\n");
3765 return -1;
3766 }
3767
3768 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3769 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3770
3771 if (iwl_tx_skb(priv, skb))
3772 dev_kfree_skb_any(skb);
3773
3774 IWL_DEBUG_MAC80211("leave\n");
3775 return 0;
3776 }
3777
3778 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
3779 struct ieee80211_if_init_conf *conf)
3780 {
3781 struct iwl_priv *priv = hw->priv;
3782 unsigned long flags;
3783 DECLARE_MAC_BUF(mac);
3784
3785 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
3786
3787 if (priv->vif) {
3788 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
3789 return -EOPNOTSUPP;
3790 }
3791
3792 spin_lock_irqsave(&priv->lock, flags);
3793 priv->vif = conf->vif;
3794
3795 spin_unlock_irqrestore(&priv->lock, flags);
3796
3797 mutex_lock(&priv->mutex);
3798
3799 if (conf->mac_addr) {
3800 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
3801 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
3802 }
3803
3804 if (iwl_is_ready(priv))
3805 iwl4965_set_mode(priv, conf->type);
3806
3807 mutex_unlock(&priv->mutex);
3808
3809 IWL_DEBUG_MAC80211("leave\n");
3810 return 0;
3811 }
3812
3813 /**
3814 * iwl4965_mac_config - mac80211 config callback
3815 *
3816 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
3817 * be set inappropriately and the driver currently sets the hardware up to
3818 * use it whenever needed.
3819 */
3820 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
3821 {
3822 struct iwl_priv *priv = hw->priv;
3823 const struct iwl_channel_info *ch_info;
3824 unsigned long flags;
3825 int ret = 0;
3826
3827 mutex_lock(&priv->mutex);
3828 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
3829
3830 priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
3831
3832 if (!iwl_is_ready(priv)) {
3833 IWL_DEBUG_MAC80211("leave - not ready\n");
3834 ret = -EIO;
3835 goto out;
3836 }
3837
3838 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
3839 test_bit(STATUS_SCANNING, &priv->status))) {
3840 IWL_DEBUG_MAC80211("leave - scanning\n");
3841 set_bit(STATUS_CONF_PENDING, &priv->status);
3842 mutex_unlock(&priv->mutex);
3843 return 0;
3844 }
3845
3846 spin_lock_irqsave(&priv->lock, flags);
3847
3848 ch_info = iwl_get_channel_info(priv, conf->channel->band,
3849 ieee80211_frequency_to_channel(conf->channel->center_freq));
3850 if (!is_channel_valid(ch_info)) {
3851 IWL_DEBUG_MAC80211("leave - invalid channel\n");
3852 spin_unlock_irqrestore(&priv->lock, flags);
3853 ret = -EINVAL;
3854 goto out;
3855 }
3856
3857 #ifdef CONFIG_IWL4965_HT
3858 /* if we are switching from ht to 2.4 clear flags
3859 * from any ht related info since 2.4 does not
3860 * support ht */
3861 if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel->hw_value)
3862 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
3863 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
3864 #endif
3865 )
3866 priv->staging_rxon.flags = 0;
3867 #endif /* CONFIG_IWL4965_HT */
3868
3869 iwl_set_rxon_channel(priv, conf->channel->band,
3870 ieee80211_frequency_to_channel(conf->channel->center_freq));
3871
3872 iwl4965_set_flags_for_phymode(priv, conf->channel->band);
3873
3874 /* The list of supported rates and rate mask can be different
3875 * for each band; since the band may have changed, reset
3876 * the rate mask to what mac80211 lists */
3877 iwl4965_set_rate(priv);
3878
3879 spin_unlock_irqrestore(&priv->lock, flags);
3880
3881 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
3882 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
3883 iwl4965_hw_channel_switch(priv, conf->channel);
3884 goto out;
3885 }
3886 #endif
3887
3888 if (priv->cfg->ops->lib->radio_kill_sw)
3889 priv->cfg->ops->lib->radio_kill_sw(priv, !conf->radio_enabled);
3890
3891 if (!conf->radio_enabled) {
3892 IWL_DEBUG_MAC80211("leave - radio disabled\n");
3893 goto out;
3894 }
3895
3896 if (iwl_is_rfkill(priv)) {
3897 IWL_DEBUG_MAC80211("leave - RF kill\n");
3898 ret = -EIO;
3899 goto out;
3900 }
3901
3902 iwl4965_set_rate(priv);
3903
3904 if (memcmp(&priv->active_rxon,
3905 &priv->staging_rxon, sizeof(priv->staging_rxon)))
3906 iwl4965_commit_rxon(priv);
3907 else
3908 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
3909
3910 IWL_DEBUG_MAC80211("leave\n");
3911
3912 out:
3913 clear_bit(STATUS_CONF_PENDING, &priv->status);
3914 mutex_unlock(&priv->mutex);
3915 return ret;
3916 }
3917
3918 static void iwl4965_config_ap(struct iwl_priv *priv)
3919 {
3920 int ret = 0;
3921
3922 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3923 return;
3924
3925 /* The following should be done only at AP bring up */
3926 if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
3927
3928 /* RXON - unassoc (to set timing command) */
3929 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3930 iwl4965_commit_rxon(priv);
3931
3932 /* RXON Timing */
3933 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
3934 iwl4965_setup_rxon_timing(priv);
3935 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3936 sizeof(priv->rxon_timing), &priv->rxon_timing);
3937 if (ret)
3938 IWL_WARNING("REPLY_RXON_TIMING failed - "
3939 "Attempting to continue.\n");
3940
3941 iwl_set_rxon_chain(priv);
3942
3943 /* FIXME: what should be the assoc_id for AP? */
3944 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3945 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3946 priv->staging_rxon.flags |=
3947 RXON_FLG_SHORT_PREAMBLE_MSK;
3948 else
3949 priv->staging_rxon.flags &=
3950 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3951
3952 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3953 if (priv->assoc_capability &
3954 WLAN_CAPABILITY_SHORT_SLOT_TIME)
3955 priv->staging_rxon.flags |=
3956 RXON_FLG_SHORT_SLOT_MSK;
3957 else
3958 priv->staging_rxon.flags &=
3959 ~RXON_FLG_SHORT_SLOT_MSK;
3960
3961 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
3962 priv->staging_rxon.flags &=
3963 ~RXON_FLG_SHORT_SLOT_MSK;
3964 }
3965 /* restore RXON assoc */
3966 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3967 iwl4965_commit_rxon(priv);
3968 iwl4965_activate_qos(priv, 1);
3969 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
3970 }
3971 iwl4965_send_beacon_cmd(priv);
3972
3973 /* FIXME - we need to add code here to detect a totally new
3974 * configuration, reset the AP, unassoc, rxon timing, assoc,
3975 * clear sta table, add BCAST sta... */
3976 }
3977
3978 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
3979 struct ieee80211_vif *vif,
3980 struct ieee80211_if_conf *conf)
3981 {
3982 struct iwl_priv *priv = hw->priv;
3983 DECLARE_MAC_BUF(mac);
3984 unsigned long flags;
3985 int rc;
3986
3987 if (conf == NULL)
3988 return -EIO;
3989
3990 if (priv->vif != vif) {
3991 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
3992 return 0;
3993 }
3994
3995 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3996 (!conf->beacon || !conf->ssid_len)) {
3997 IWL_DEBUG_MAC80211
3998 ("Leaving in AP mode because HostAPD is not ready.\n");
3999 return 0;
4000 }
4001
4002 if (!iwl_is_alive(priv))
4003 return -EAGAIN;
4004
4005 mutex_lock(&priv->mutex);
4006
4007 if (conf->bssid)
4008 IWL_DEBUG_MAC80211("bssid: %s\n",
4009 print_mac(mac, conf->bssid));
4010
4011 /*
4012 * very dubious code was here; the probe filtering flag is never set:
4013 *
4014 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
4015 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
4016 */
4017
4018 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
4019 if (!conf->bssid) {
4020 conf->bssid = priv->mac_addr;
4021 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
4022 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
4023 print_mac(mac, conf->bssid));
4024 }
4025 if (priv->ibss_beacon)
4026 dev_kfree_skb(priv->ibss_beacon);
4027
4028 priv->ibss_beacon = conf->beacon;
4029 }
4030
4031 if (iwl_is_rfkill(priv))
4032 goto done;
4033
4034 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
4035 !is_multicast_ether_addr(conf->bssid)) {
4036 /* If there is currently a HW scan going on in the background
4037 * then we need to cancel it else the RXON below will fail. */
4038 if (iwl4965_scan_cancel_timeout(priv, 100)) {
4039 IWL_WARNING("Aborted scan still in progress "
4040 "after 100ms\n");
4041 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
4042 mutex_unlock(&priv->mutex);
4043 return -EAGAIN;
4044 }
4045 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
4046
4047 /* TODO: Audit driver for usage of these members and see
4048 * if mac80211 deprecates them (priv->bssid looks like it
4049 * shouldn't be there, but I haven't scanned the IBSS code
4050 * to verify) - jpk */
4051 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
4052
4053 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
4054 iwl4965_config_ap(priv);
4055 else {
4056 rc = iwl4965_commit_rxon(priv);
4057 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
4058 iwl_rxon_add_station(
4059 priv, priv->active_rxon.bssid_addr, 1);
4060 }
4061
4062 } else {
4063 iwl4965_scan_cancel_timeout(priv, 100);
4064 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4065 iwl4965_commit_rxon(priv);
4066 }
4067
4068 done:
4069 spin_lock_irqsave(&priv->lock, flags);
4070 if (!conf->ssid_len)
4071 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
4072 else
4073 memcpy(priv->essid, conf->ssid, conf->ssid_len);
4074
4075 priv->essid_len = conf->ssid_len;
4076 spin_unlock_irqrestore(&priv->lock, flags);
4077
4078 IWL_DEBUG_MAC80211("leave\n");
4079 mutex_unlock(&priv->mutex);
4080
4081 return 0;
4082 }
4083
4084 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
4085 unsigned int changed_flags,
4086 unsigned int *total_flags,
4087 int mc_count, struct dev_addr_list *mc_list)
4088 {
4089 /*
4090 * XXX: dummy
4091 * see also iwl4965_connection_init_rx_config
4092 */
4093 struct iwl_priv *priv = hw->priv;
4094 int new_flags = 0;
4095 if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
4096 if (*total_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
4097 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
4098 IEEE80211_IF_TYPE_MNTR,
4099 changed_flags, *total_flags);
4100 /* queue work 'cuz mac80211 is holding a lock which
4101 * prevents us from issuing (synchronous) f/w cmds */
4102 queue_work(priv->workqueue, &priv->set_monitor);
4103 new_flags &= FIF_PROMISC_IN_BSS |
4104 FIF_OTHER_BSS |
4105 FIF_ALLMULTI;
4106 }
4107 }
4108 *total_flags = new_flags;
4109 }
4110
4111 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
4112 struct ieee80211_if_init_conf *conf)
4113 {
4114 struct iwl_priv *priv = hw->priv;
4115
4116 IWL_DEBUG_MAC80211("enter\n");
4117
4118 mutex_lock(&priv->mutex);
4119
4120 if (iwl_is_ready_rf(priv)) {
4121 iwl4965_scan_cancel_timeout(priv, 100);
4122 cancel_delayed_work(&priv->post_associate);
4123 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4124 iwl4965_commit_rxon(priv);
4125 }
4126 if (priv->vif == conf->vif) {
4127 priv->vif = NULL;
4128 memset(priv->bssid, 0, ETH_ALEN);
4129 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
4130 priv->essid_len = 0;
4131 }
4132 mutex_unlock(&priv->mutex);
4133
4134 IWL_DEBUG_MAC80211("leave\n");
4135
4136 }
4137
4138 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
4139 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
4140 struct ieee80211_vif *vif,
4141 struct ieee80211_bss_conf *bss_conf,
4142 u32 changes)
4143 {
4144 struct iwl_priv *priv = hw->priv;
4145
4146 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
4147
4148 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
4149 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
4150 bss_conf->use_short_preamble);
4151 if (bss_conf->use_short_preamble)
4152 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
4153 else
4154 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
4155 }
4156
4157 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
4158 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
4159 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
4160 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
4161 else
4162 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
4163 }
4164
4165 if (changes & BSS_CHANGED_HT) {
4166 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
4167 iwl4965_ht_conf(priv, bss_conf);
4168 iwl_set_rxon_chain(priv);
4169 }
4170
4171 if (changes & BSS_CHANGED_ASSOC) {
4172 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
4173 /* This should never happen as this function should
4174 * never be called from interrupt context. */
4175 if (WARN_ON_ONCE(in_interrupt()))
4176 return;
4177 if (bss_conf->assoc) {
4178 priv->assoc_id = bss_conf->aid;
4179 priv->beacon_int = bss_conf->beacon_int;
4180 priv->timestamp = bss_conf->timestamp;
4181 priv->assoc_capability = bss_conf->assoc_capability;
4182 priv->next_scan_jiffies = jiffies +
4183 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
4184 mutex_lock(&priv->mutex);
4185 iwl4965_post_associate(priv);
4186 mutex_unlock(&priv->mutex);
4187 } else {
4188 priv->assoc_id = 0;
4189 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
4190 }
4191 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
4192 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
4193 iwl_send_rxon_assoc(priv);
4194 }
4195
4196 }
4197
4198 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
4199 {
4200 int rc = 0;
4201 unsigned long flags;
4202 struct iwl_priv *priv = hw->priv;
4203
4204 IWL_DEBUG_MAC80211("enter\n");
4205
4206 mutex_lock(&priv->mutex);
4207 spin_lock_irqsave(&priv->lock, flags);
4208
4209 if (!iwl_is_ready_rf(priv)) {
4210 rc = -EIO;
4211 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
4212 goto out_unlock;
4213 }
4214
4215 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
4216 rc = -EIO;
4217 IWL_ERROR("ERROR: APs don't scan\n");
4218 goto out_unlock;
4219 }
4220
4221 /* we don't schedule scan within next_scan_jiffies period */
4222 if (priv->next_scan_jiffies &&
4223 time_after(priv->next_scan_jiffies, jiffies)) {
4224 rc = -EAGAIN;
4225 goto out_unlock;
4226 }
4227 /* if we just finished scan ask for delay */
4228 if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
4229 IWL_DELAY_NEXT_SCAN, jiffies)) {
4230 rc = -EAGAIN;
4231 goto out_unlock;
4232 }
4233 if (len) {
4234 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
4235 iwl4965_escape_essid(ssid, len), (int)len);
4236
4237 priv->one_direct_scan = 1;
4238 priv->direct_ssid_len = (u8)
4239 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
4240 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
4241 } else
4242 priv->one_direct_scan = 0;
4243
4244 rc = iwl4965_scan_initiate(priv);
4245
4246 IWL_DEBUG_MAC80211("leave\n");
4247
4248 out_unlock:
4249 spin_unlock_irqrestore(&priv->lock, flags);
4250 mutex_unlock(&priv->mutex);
4251
4252 return rc;
4253 }
4254
4255 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
4256 struct ieee80211_key_conf *keyconf, const u8 *addr,
4257 u32 iv32, u16 *phase1key)
4258 {
4259 struct iwl_priv *priv = hw->priv;
4260 u8 sta_id = IWL_INVALID_STATION;
4261 unsigned long flags;
4262 __le16 key_flags = 0;
4263 int i;
4264 DECLARE_MAC_BUF(mac);
4265
4266 IWL_DEBUG_MAC80211("enter\n");
4267
4268 sta_id = iwl_find_station(priv, addr);
4269 if (sta_id == IWL_INVALID_STATION) {
4270 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
4271 print_mac(mac, addr));
4272 return;
4273 }
4274
4275 iwl4965_scan_cancel_timeout(priv, 100);
4276
4277 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
4278 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
4279 key_flags &= ~STA_KEY_FLG_INVALID;
4280
4281 if (sta_id == priv->hw_params.bcast_sta_id)
4282 key_flags |= STA_KEY_MULTICAST_MSK;
4283
4284 spin_lock_irqsave(&priv->sta_lock, flags);
4285
4286 priv->stations[sta_id].sta.key.key_flags = key_flags;
4287 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
4288
4289 for (i = 0; i < 5; i++)
4290 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
4291 cpu_to_le16(phase1key[i]);
4292
4293 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
4294 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
4295
4296 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
4297
4298 spin_unlock_irqrestore(&priv->sta_lock, flags);
4299
4300 IWL_DEBUG_MAC80211("leave\n");
4301 }
4302
4303 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
4304 const u8 *local_addr, const u8 *addr,
4305 struct ieee80211_key_conf *key)
4306 {
4307 struct iwl_priv *priv = hw->priv;
4308 DECLARE_MAC_BUF(mac);
4309 int ret = 0;
4310 u8 sta_id = IWL_INVALID_STATION;
4311 u8 is_default_wep_key = 0;
4312
4313 IWL_DEBUG_MAC80211("enter\n");
4314
4315 if (priv->hw_params.sw_crypto) {
4316 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
4317 return -EOPNOTSUPP;
4318 }
4319
4320 if (is_zero_ether_addr(addr))
4321 /* only support pairwise keys */
4322 return -EOPNOTSUPP;
4323
4324 sta_id = iwl_find_station(priv, addr);
4325 if (sta_id == IWL_INVALID_STATION) {
4326 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
4327 print_mac(mac, addr));
4328 return -EINVAL;
4329
4330 }
4331
4332 mutex_lock(&priv->mutex);
4333 iwl4965_scan_cancel_timeout(priv, 100);
4334 mutex_unlock(&priv->mutex);
4335
4336 /* If we are getting WEP group key and we didn't receive any key mapping
4337 * so far, we are in legacy wep mode (group key only), otherwise we are
4338 * in 1X mode.
4339 * In legacy wep mode, we use another host command to the uCode */
4340 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
4341 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
4342 if (cmd == SET_KEY)
4343 is_default_wep_key = !priv->key_mapping_key;
4344 else
4345 is_default_wep_key =
4346 (key->hw_key_idx == HW_KEY_DEFAULT);
4347 }
4348
4349 switch (cmd) {
4350 case SET_KEY:
4351 if (is_default_wep_key)
4352 ret = iwl_set_default_wep_key(priv, key);
4353 else
4354 ret = iwl_set_dynamic_key(priv, key, sta_id);
4355
4356 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
4357 break;
4358 case DISABLE_KEY:
4359 if (is_default_wep_key)
4360 ret = iwl_remove_default_wep_key(priv, key);
4361 else
4362 ret = iwl_remove_dynamic_key(priv, key, sta_id);
4363
4364 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
4365 break;
4366 default:
4367 ret = -EINVAL;
4368 }
4369
4370 IWL_DEBUG_MAC80211("leave\n");
4371
4372 return ret;
4373 }
4374
4375 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
4376 const struct ieee80211_tx_queue_params *params)
4377 {
4378 struct iwl_priv *priv = hw->priv;
4379 unsigned long flags;
4380 int q;
4381
4382 IWL_DEBUG_MAC80211("enter\n");
4383
4384 if (!iwl_is_ready_rf(priv)) {
4385 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4386 return -EIO;
4387 }
4388
4389 if (queue >= AC_NUM) {
4390 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
4391 return 0;
4392 }
4393
4394 if (!priv->qos_data.qos_enable) {
4395 priv->qos_data.qos_active = 0;
4396 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
4397 return 0;
4398 }
4399 q = AC_NUM - 1 - queue;
4400
4401 spin_lock_irqsave(&priv->lock, flags);
4402
4403 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
4404 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
4405 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
4406 priv->qos_data.def_qos_parm.ac[q].edca_txop =
4407 cpu_to_le16((params->txop * 32));
4408
4409 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
4410 priv->qos_data.qos_active = 1;
4411
4412 spin_unlock_irqrestore(&priv->lock, flags);
4413
4414 mutex_lock(&priv->mutex);
4415 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
4416 iwl4965_activate_qos(priv, 1);
4417 else if (priv->assoc_id && iwl_is_associated(priv))
4418 iwl4965_activate_qos(priv, 0);
4419
4420 mutex_unlock(&priv->mutex);
4421
4422 IWL_DEBUG_MAC80211("leave\n");
4423 return 0;
4424 }
4425
4426 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
4427 struct ieee80211_tx_queue_stats *stats)
4428 {
4429 struct iwl_priv *priv = hw->priv;
4430 int i, avail;
4431 struct iwl_tx_queue *txq;
4432 struct iwl_queue *q;
4433 unsigned long flags;
4434
4435 IWL_DEBUG_MAC80211("enter\n");
4436
4437 if (!iwl_is_ready_rf(priv)) {
4438 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4439 return -EIO;
4440 }
4441
4442 spin_lock_irqsave(&priv->lock, flags);
4443
4444 for (i = 0; i < AC_NUM; i++) {
4445 txq = &priv->txq[i];
4446 q = &txq->q;
4447 avail = iwl_queue_space(q);
4448
4449 stats[i].len = q->n_window - avail;
4450 stats[i].limit = q->n_window - q->high_mark;
4451 stats[i].count = q->n_window;
4452
4453 }
4454 spin_unlock_irqrestore(&priv->lock, flags);
4455
4456 IWL_DEBUG_MAC80211("leave\n");
4457
4458 return 0;
4459 }
4460
4461 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
4462 struct ieee80211_low_level_stats *stats)
4463 {
4464 struct iwl_priv *priv = hw->priv;
4465
4466 priv = hw->priv;
4467 IWL_DEBUG_MAC80211("enter\n");
4468 IWL_DEBUG_MAC80211("leave\n");
4469
4470 return 0;
4471 }
4472
4473 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
4474 {
4475 struct iwl_priv *priv;
4476
4477 priv = hw->priv;
4478 IWL_DEBUG_MAC80211("enter\n");
4479 IWL_DEBUG_MAC80211("leave\n");
4480
4481 return 0;
4482 }
4483
4484 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
4485 {
4486 struct iwl_priv *priv = hw->priv;
4487 unsigned long flags;
4488
4489 mutex_lock(&priv->mutex);
4490 IWL_DEBUG_MAC80211("enter\n");
4491
4492 priv->lq_mngr.lq_ready = 0;
4493 #ifdef CONFIG_IWL4965_HT
4494 spin_lock_irqsave(&priv->lock, flags);
4495 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
4496 spin_unlock_irqrestore(&priv->lock, flags);
4497 #endif /* CONFIG_IWL4965_HT */
4498
4499 iwl_reset_qos(priv);
4500
4501 cancel_delayed_work(&priv->post_associate);
4502
4503 spin_lock_irqsave(&priv->lock, flags);
4504 priv->assoc_id = 0;
4505 priv->assoc_capability = 0;
4506 priv->assoc_station_added = 0;
4507
4508 /* new association get rid of ibss beacon skb */
4509 if (priv->ibss_beacon)
4510 dev_kfree_skb(priv->ibss_beacon);
4511
4512 priv->ibss_beacon = NULL;
4513
4514 priv->beacon_int = priv->hw->conf.beacon_int;
4515 priv->timestamp = 0;
4516 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
4517 priv->beacon_int = 0;
4518
4519 spin_unlock_irqrestore(&priv->lock, flags);
4520
4521 if (!iwl_is_ready_rf(priv)) {
4522 IWL_DEBUG_MAC80211("leave - not ready\n");
4523 mutex_unlock(&priv->mutex);
4524 return;
4525 }
4526
4527 /* we are restarting association process
4528 * clear RXON_FILTER_ASSOC_MSK bit
4529 */
4530 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
4531 iwl4965_scan_cancel_timeout(priv, 100);
4532 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4533 iwl4965_commit_rxon(priv);
4534 }
4535
4536 iwl_power_update_mode(priv, 0);
4537
4538 /* Per mac80211.h: This is only used in IBSS mode... */
4539 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
4540
4541 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
4542 mutex_unlock(&priv->mutex);
4543 return;
4544 }
4545
4546 iwl4965_set_rate(priv);
4547
4548 mutex_unlock(&priv->mutex);
4549
4550 IWL_DEBUG_MAC80211("leave\n");
4551 }
4552
4553 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
4554 {
4555 struct iwl_priv *priv = hw->priv;
4556 unsigned long flags;
4557
4558 mutex_lock(&priv->mutex);
4559 IWL_DEBUG_MAC80211("enter\n");
4560
4561 if (!iwl_is_ready_rf(priv)) {
4562 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4563 mutex_unlock(&priv->mutex);
4564 return -EIO;
4565 }
4566
4567 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
4568 IWL_DEBUG_MAC80211("leave - not IBSS\n");
4569 mutex_unlock(&priv->mutex);
4570 return -EIO;
4571 }
4572
4573 spin_lock_irqsave(&priv->lock, flags);
4574
4575 if (priv->ibss_beacon)
4576 dev_kfree_skb(priv->ibss_beacon);
4577
4578 priv->ibss_beacon = skb;
4579
4580 priv->assoc_id = 0;
4581
4582 IWL_DEBUG_MAC80211("leave\n");
4583 spin_unlock_irqrestore(&priv->lock, flags);
4584
4585 iwl_reset_qos(priv);
4586
4587 queue_work(priv->workqueue, &priv->post_associate.work);
4588
4589 mutex_unlock(&priv->mutex);
4590
4591 return 0;
4592 }
4593
4594 /*****************************************************************************
4595 *
4596 * sysfs attributes
4597 *
4598 *****************************************************************************/
4599
4600 #ifdef CONFIG_IWLWIFI_DEBUG
4601
4602 /*
4603 * The following adds a new attribute to the sysfs representation
4604 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
4605 * used for controlling the debug level.
4606 *
4607 * See the level definitions in iwl for details.
4608 */
4609
4610 static ssize_t show_debug_level(struct device *d,
4611 struct device_attribute *attr, char *buf)
4612 {
4613 struct iwl_priv *priv = d->driver_data;
4614
4615 return sprintf(buf, "0x%08X\n", priv->debug_level);
4616 }
4617 static ssize_t store_debug_level(struct device *d,
4618 struct device_attribute *attr,
4619 const char *buf, size_t count)
4620 {
4621 struct iwl_priv *priv = d->driver_data;
4622 char *p = (char *)buf;
4623 u32 val;
4624
4625 val = simple_strtoul(p, &p, 0);
4626 if (p == buf)
4627 printk(KERN_INFO DRV_NAME
4628 ": %s is not in hex or decimal form.\n", buf);
4629 else
4630 priv->debug_level = val;
4631
4632 return strnlen(buf, count);
4633 }
4634
4635 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
4636 show_debug_level, store_debug_level);
4637
4638
4639 #endif /* CONFIG_IWLWIFI_DEBUG */
4640
4641
4642 static ssize_t show_version(struct device *d,
4643 struct device_attribute *attr, char *buf)
4644 {
4645 struct iwl_priv *priv = d->driver_data;
4646 struct iwl_alive_resp *palive = &priv->card_alive;
4647
4648 if (palive->is_valid)
4649 return sprintf(buf, "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
4650 "fw type: 0x%01X 0x%01X\n",
4651 palive->ucode_major, palive->ucode_minor,
4652 palive->sw_rev[0], palive->sw_rev[1],
4653 palive->ver_type, palive->ver_subtype);
4654
4655 else
4656 return sprintf(buf, "fw not loaded\n");
4657 }
4658
4659 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
4660
4661 static ssize_t show_temperature(struct device *d,
4662 struct device_attribute *attr, char *buf)
4663 {
4664 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4665
4666 if (!iwl_is_alive(priv))
4667 return -EAGAIN;
4668
4669 return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
4670 }
4671
4672 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
4673
4674 static ssize_t show_rs_window(struct device *d,
4675 struct device_attribute *attr,
4676 char *buf)
4677 {
4678 struct iwl_priv *priv = d->driver_data;
4679 return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
4680 }
4681 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
4682
4683 static ssize_t show_tx_power(struct device *d,
4684 struct device_attribute *attr, char *buf)
4685 {
4686 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4687 return sprintf(buf, "%d\n", priv->user_txpower_limit);
4688 }
4689
4690 static ssize_t store_tx_power(struct device *d,
4691 struct device_attribute *attr,
4692 const char *buf, size_t count)
4693 {
4694 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4695 char *p = (char *)buf;
4696 u32 val;
4697
4698 val = simple_strtoul(p, &p, 10);
4699 if (p == buf)
4700 printk(KERN_INFO DRV_NAME
4701 ": %s is not in decimal form.\n", buf);
4702 else
4703 iwl4965_hw_reg_set_txpower(priv, val);
4704
4705 return count;
4706 }
4707
4708 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
4709
4710 static ssize_t show_flags(struct device *d,
4711 struct device_attribute *attr, char *buf)
4712 {
4713 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4714
4715 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
4716 }
4717
4718 static ssize_t store_flags(struct device *d,
4719 struct device_attribute *attr,
4720 const char *buf, size_t count)
4721 {
4722 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4723 u32 flags = simple_strtoul(buf, NULL, 0);
4724
4725 mutex_lock(&priv->mutex);
4726 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
4727 /* Cancel any currently running scans... */
4728 if (iwl4965_scan_cancel_timeout(priv, 100))
4729 IWL_WARNING("Could not cancel scan.\n");
4730 else {
4731 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
4732 flags);
4733 priv->staging_rxon.flags = cpu_to_le32(flags);
4734 iwl4965_commit_rxon(priv);
4735 }
4736 }
4737 mutex_unlock(&priv->mutex);
4738
4739 return count;
4740 }
4741
4742 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
4743
4744 static ssize_t show_filter_flags(struct device *d,
4745 struct device_attribute *attr, char *buf)
4746 {
4747 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4748
4749 return sprintf(buf, "0x%04X\n",
4750 le32_to_cpu(priv->active_rxon.filter_flags));
4751 }
4752
4753 static ssize_t store_filter_flags(struct device *d,
4754 struct device_attribute *attr,
4755 const char *buf, size_t count)
4756 {
4757 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4758 u32 filter_flags = simple_strtoul(buf, NULL, 0);
4759
4760 mutex_lock(&priv->mutex);
4761 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
4762 /* Cancel any currently running scans... */
4763 if (iwl4965_scan_cancel_timeout(priv, 100))
4764 IWL_WARNING("Could not cancel scan.\n");
4765 else {
4766 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
4767 "0x%04X\n", filter_flags);
4768 priv->staging_rxon.filter_flags =
4769 cpu_to_le32(filter_flags);
4770 iwl4965_commit_rxon(priv);
4771 }
4772 }
4773 mutex_unlock(&priv->mutex);
4774
4775 return count;
4776 }
4777
4778 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
4779 store_filter_flags);
4780
4781 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
4782
4783 static ssize_t show_measurement(struct device *d,
4784 struct device_attribute *attr, char *buf)
4785 {
4786 struct iwl_priv *priv = dev_get_drvdata(d);
4787 struct iwl4965_spectrum_notification measure_report;
4788 u32 size = sizeof(measure_report), len = 0, ofs = 0;
4789 u8 *data = (u8 *) & measure_report;
4790 unsigned long flags;
4791
4792 spin_lock_irqsave(&priv->lock, flags);
4793 if (!(priv->measurement_status & MEASUREMENT_READY)) {
4794 spin_unlock_irqrestore(&priv->lock, flags);
4795 return 0;
4796 }
4797 memcpy(&measure_report, &priv->measure_report, size);
4798 priv->measurement_status = 0;
4799 spin_unlock_irqrestore(&priv->lock, flags);
4800
4801 while (size && (PAGE_SIZE - len)) {
4802 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4803 PAGE_SIZE - len, 1);
4804 len = strlen(buf);
4805 if (PAGE_SIZE - len)
4806 buf[len++] = '\n';
4807
4808 ofs += 16;
4809 size -= min(size, 16U);
4810 }
4811
4812 return len;
4813 }
4814
4815 static ssize_t store_measurement(struct device *d,
4816 struct device_attribute *attr,
4817 const char *buf, size_t count)
4818 {
4819 struct iwl_priv *priv = dev_get_drvdata(d);
4820 struct ieee80211_measurement_params params = {
4821 .channel = le16_to_cpu(priv->active_rxon.channel),
4822 .start_time = cpu_to_le64(priv->last_tsf),
4823 .duration = cpu_to_le16(1),
4824 };
4825 u8 type = IWL_MEASURE_BASIC;
4826 u8 buffer[32];
4827 u8 channel;
4828
4829 if (count) {
4830 char *p = buffer;
4831 strncpy(buffer, buf, min(sizeof(buffer), count));
4832 channel = simple_strtoul(p, NULL, 0);
4833 if (channel)
4834 params.channel = channel;
4835
4836 p = buffer;
4837 while (*p && *p != ' ')
4838 p++;
4839 if (*p)
4840 type = simple_strtoul(p + 1, NULL, 0);
4841 }
4842
4843 IWL_DEBUG_INFO("Invoking measurement of type %d on "
4844 "channel %d (for '%s')\n", type, params.channel, buf);
4845 iwl4965_get_measurement(priv, &params, type);
4846
4847 return count;
4848 }
4849
4850 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
4851 show_measurement, store_measurement);
4852 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
4853
4854 static ssize_t store_retry_rate(struct device *d,
4855 struct device_attribute *attr,
4856 const char *buf, size_t count)
4857 {
4858 struct iwl_priv *priv = dev_get_drvdata(d);
4859
4860 priv->retry_rate = simple_strtoul(buf, NULL, 0);
4861 if (priv->retry_rate <= 0)
4862 priv->retry_rate = 1;
4863
4864 return count;
4865 }
4866
4867 static ssize_t show_retry_rate(struct device *d,
4868 struct device_attribute *attr, char *buf)
4869 {
4870 struct iwl_priv *priv = dev_get_drvdata(d);
4871 return sprintf(buf, "%d", priv->retry_rate);
4872 }
4873
4874 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
4875 store_retry_rate);
4876
4877 static ssize_t store_power_level(struct device *d,
4878 struct device_attribute *attr,
4879 const char *buf, size_t count)
4880 {
4881 struct iwl_priv *priv = dev_get_drvdata(d);
4882 int rc;
4883 int mode;
4884
4885 mode = simple_strtoul(buf, NULL, 0);
4886 mutex_lock(&priv->mutex);
4887
4888 if (!iwl_is_ready(priv)) {
4889 rc = -EAGAIN;
4890 goto out;
4891 }
4892
4893 rc = iwl_power_set_user_mode(priv, mode);
4894 if (rc) {
4895 IWL_DEBUG_MAC80211("failed setting power mode.\n");
4896 goto out;
4897 }
4898 rc = count;
4899
4900 out:
4901 mutex_unlock(&priv->mutex);
4902 return rc;
4903 }
4904
4905 #define MAX_WX_STRING 80
4906
4907 /* Values are in microsecond */
4908 static const s32 timeout_duration[] = {
4909 350000,
4910 250000,
4911 75000,
4912 37000,
4913 25000,
4914 };
4915 static const s32 period_duration[] = {
4916 400000,
4917 700000,
4918 1000000,
4919 1000000,
4920 1000000
4921 };
4922
4923 static ssize_t show_power_level(struct device *d,
4924 struct device_attribute *attr, char *buf)
4925 {
4926 struct iwl_priv *priv = dev_get_drvdata(d);
4927 int level = priv->power_data.power_mode;
4928 char *p = buf;
4929
4930 p += sprintf(p, "%d ", level);
4931 switch (level) {
4932 case IWL_POWER_MODE_CAM:
4933 case IWL_POWER_AC:
4934 p += sprintf(p, "(AC)");
4935 break;
4936 case IWL_POWER_BATTERY:
4937 p += sprintf(p, "(BATTERY)");
4938 break;
4939 default:
4940 p += sprintf(p,
4941 "(Timeout %dms, Period %dms)",
4942 timeout_duration[level - 1] / 1000,
4943 period_duration[level - 1] / 1000);
4944 }
4945 /*
4946 if (!(priv->power_mode & IWL_POWER_ENABLED))
4947 p += sprintf(p, " OFF\n");
4948 else
4949 p += sprintf(p, " \n");
4950 */
4951 p += sprintf(p, " \n");
4952 return (p - buf + 1);
4953 }
4954
4955 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
4956 store_power_level);
4957
4958 static ssize_t show_channels(struct device *d,
4959 struct device_attribute *attr, char *buf)
4960 {
4961 /* all this shit doesn't belong into sysfs anyway */
4962 return 0;
4963 }
4964
4965 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
4966
4967 static ssize_t show_statistics(struct device *d,
4968 struct device_attribute *attr, char *buf)
4969 {
4970 struct iwl_priv *priv = dev_get_drvdata(d);
4971 u32 size = sizeof(struct iwl4965_notif_statistics);
4972 u32 len = 0, ofs = 0;
4973 u8 *data = (u8 *) & priv->statistics;
4974 int rc = 0;
4975
4976 if (!iwl_is_alive(priv))
4977 return -EAGAIN;
4978
4979 mutex_lock(&priv->mutex);
4980 rc = iwl_send_statistics_request(priv, 0);
4981 mutex_unlock(&priv->mutex);
4982
4983 if (rc) {
4984 len = sprintf(buf,
4985 "Error sending statistics request: 0x%08X\n", rc);
4986 return len;
4987 }
4988
4989 while (size && (PAGE_SIZE - len)) {
4990 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4991 PAGE_SIZE - len, 1);
4992 len = strlen(buf);
4993 if (PAGE_SIZE - len)
4994 buf[len++] = '\n';
4995
4996 ofs += 16;
4997 size -= min(size, 16U);
4998 }
4999
5000 return len;
5001 }
5002
5003 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
5004
5005 static ssize_t show_status(struct device *d,
5006 struct device_attribute *attr, char *buf)
5007 {
5008 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5009 if (!iwl_is_alive(priv))
5010 return -EAGAIN;
5011 return sprintf(buf, "0x%08x\n", (int)priv->status);
5012 }
5013
5014 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
5015
5016 /*****************************************************************************
5017 *
5018 * driver setup and teardown
5019 *
5020 *****************************************************************************/
5021
5022 static void iwl4965_setup_deferred_work(struct iwl_priv *priv)
5023 {
5024 priv->workqueue = create_workqueue(DRV_NAME);
5025
5026 init_waitqueue_head(&priv->wait_command_queue);
5027
5028 INIT_WORK(&priv->up, iwl4965_bg_up);
5029 INIT_WORK(&priv->restart, iwl4965_bg_restart);
5030 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
5031 INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
5032 INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
5033 INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
5034 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
5035 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
5036 INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
5037 INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
5038 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
5039 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
5040 INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
5041
5042 iwl4965_hw_setup_deferred_work(priv);
5043
5044 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
5045 iwl4965_irq_tasklet, (unsigned long)priv);
5046 }
5047
5048 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv)
5049 {
5050 iwl4965_hw_cancel_deferred_work(priv);
5051
5052 cancel_delayed_work_sync(&priv->init_alive_start);
5053 cancel_delayed_work(&priv->scan_check);
5054 cancel_delayed_work(&priv->alive_start);
5055 cancel_delayed_work(&priv->post_associate);
5056 cancel_work_sync(&priv->beacon_update);
5057 }
5058
5059 static struct attribute *iwl4965_sysfs_entries[] = {
5060 &dev_attr_channels.attr,
5061 &dev_attr_flags.attr,
5062 &dev_attr_filter_flags.attr,
5063 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
5064 &dev_attr_measurement.attr,
5065 #endif
5066 &dev_attr_power_level.attr,
5067 &dev_attr_retry_rate.attr,
5068 &dev_attr_rs_window.attr,
5069 &dev_attr_statistics.attr,
5070 &dev_attr_status.attr,
5071 &dev_attr_temperature.attr,
5072 &dev_attr_tx_power.attr,
5073 #ifdef CONFIG_IWLWIFI_DEBUG
5074 &dev_attr_debug_level.attr,
5075 #endif
5076 &dev_attr_version.attr,
5077
5078 NULL
5079 };
5080
5081 static struct attribute_group iwl4965_attribute_group = {
5082 .name = NULL, /* put in device directory */
5083 .attrs = iwl4965_sysfs_entries,
5084 };
5085
5086 static struct ieee80211_ops iwl4965_hw_ops = {
5087 .tx = iwl4965_mac_tx,
5088 .start = iwl4965_mac_start,
5089 .stop = iwl4965_mac_stop,
5090 .add_interface = iwl4965_mac_add_interface,
5091 .remove_interface = iwl4965_mac_remove_interface,
5092 .config = iwl4965_mac_config,
5093 .config_interface = iwl4965_mac_config_interface,
5094 .configure_filter = iwl4965_configure_filter,
5095 .set_key = iwl4965_mac_set_key,
5096 .update_tkip_key = iwl4965_mac_update_tkip_key,
5097 .get_stats = iwl4965_mac_get_stats,
5098 .get_tx_stats = iwl4965_mac_get_tx_stats,
5099 .conf_tx = iwl4965_mac_conf_tx,
5100 .get_tsf = iwl4965_mac_get_tsf,
5101 .reset_tsf = iwl4965_mac_reset_tsf,
5102 .beacon_update = iwl4965_mac_beacon_update,
5103 .bss_info_changed = iwl4965_bss_info_changed,
5104 #ifdef CONFIG_IWL4965_HT
5105 .ampdu_action = iwl4965_mac_ampdu_action,
5106 #endif /* CONFIG_IWL4965_HT */
5107 .hw_scan = iwl4965_mac_hw_scan
5108 };
5109
5110 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
5111 {
5112 int err = 0;
5113 struct iwl_priv *priv;
5114 struct ieee80211_hw *hw;
5115 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
5116 unsigned long flags;
5117 DECLARE_MAC_BUF(mac);
5118
5119 /************************
5120 * 1. Allocating HW data
5121 ************************/
5122
5123 /* Disabling hardware scan means that mac80211 will perform scans
5124 * "the hard way", rather than using device's scan. */
5125 if (cfg->mod_params->disable_hw_scan) {
5126 if (cfg->mod_params->debug & IWL_DL_INFO)
5127 dev_printk(KERN_DEBUG, &(pdev->dev),
5128 "Disabling hw_scan\n");
5129 iwl4965_hw_ops.hw_scan = NULL;
5130 }
5131
5132 hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
5133 if (!hw) {
5134 err = -ENOMEM;
5135 goto out;
5136 }
5137 priv = hw->priv;
5138 /* At this point both hw and priv are allocated. */
5139
5140 SET_IEEE80211_DEV(hw, &pdev->dev);
5141
5142 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
5143 priv->cfg = cfg;
5144 priv->pci_dev = pdev;
5145
5146 #ifdef CONFIG_IWLWIFI_DEBUG
5147 priv->debug_level = priv->cfg->mod_params->debug;
5148 atomic_set(&priv->restrict_refcnt, 0);
5149 #endif
5150
5151 /**************************
5152 * 2. Initializing PCI bus
5153 **************************/
5154 if (pci_enable_device(pdev)) {
5155 err = -ENODEV;
5156 goto out_ieee80211_free_hw;
5157 }
5158
5159 pci_set_master(pdev);
5160
5161 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
5162 if (!err)
5163 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
5164 if (err) {
5165 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
5166 if (!err)
5167 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
5168 /* both attempts failed: */
5169 if (err) {
5170 printk(KERN_WARNING "%s: No suitable DMA available.\n",
5171 DRV_NAME);
5172 goto out_pci_disable_device;
5173 }
5174 }
5175
5176 err = pci_request_regions(pdev, DRV_NAME);
5177 if (err)
5178 goto out_pci_disable_device;
5179
5180 pci_set_drvdata(pdev, priv);
5181
5182 /* We disable the RETRY_TIMEOUT register (0x41) to keep
5183 * PCI Tx retries from interfering with C3 CPU state */
5184 pci_write_config_byte(pdev, 0x41, 0x00);
5185
5186 /***********************
5187 * 3. Read REV register
5188 ***********************/
5189 priv->hw_base = pci_iomap(pdev, 0, 0);
5190 if (!priv->hw_base) {
5191 err = -ENODEV;
5192 goto out_pci_release_regions;
5193 }
5194
5195 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
5196 (unsigned long long) pci_resource_len(pdev, 0));
5197 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
5198
5199 iwl_hw_detect(priv);
5200 printk(KERN_INFO DRV_NAME
5201 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
5202 priv->cfg->name, priv->hw_rev);
5203
5204 /* amp init */
5205 err = priv->cfg->ops->lib->apm_ops.init(priv);
5206 if (err < 0) {
5207 IWL_DEBUG_INFO("Failed to init APMG\n");
5208 goto out_iounmap;
5209 }
5210 /*****************
5211 * 4. Read EEPROM
5212 *****************/
5213 /* Read the EEPROM */
5214 err = iwl_eeprom_init(priv);
5215 if (err) {
5216 IWL_ERROR("Unable to init EEPROM\n");
5217 goto out_iounmap;
5218 }
5219 err = iwl_eeprom_check_version(priv);
5220 if (err)
5221 goto out_iounmap;
5222
5223 /* extract MAC Address */
5224 iwl_eeprom_get_mac(priv, priv->mac_addr);
5225 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
5226 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
5227
5228 /************************
5229 * 5. Setup HW constants
5230 ************************/
5231 /* Device-specific setup */
5232 if (priv->cfg->ops->lib->set_hw_params(priv)) {
5233 IWL_ERROR("failed to set hw parameters\n");
5234 goto out_free_eeprom;
5235 }
5236
5237 /*******************
5238 * 6. Setup priv
5239 *******************/
5240
5241 err = iwl_init_drv(priv);
5242 if (err)
5243 goto out_free_eeprom;
5244 /* At this point both hw and priv are initialized. */
5245
5246 /**********************************
5247 * 7. Initialize module parameters
5248 **********************************/
5249
5250 /* Disable radio (SW RF KILL) via parameter when loading driver */
5251 if (priv->cfg->mod_params->disable) {
5252 set_bit(STATUS_RF_KILL_SW, &priv->status);
5253 IWL_DEBUG_INFO("Radio disabled.\n");
5254 }
5255
5256 /********************
5257 * 8. Setup services
5258 ********************/
5259 spin_lock_irqsave(&priv->lock, flags);
5260 iwl4965_disable_interrupts(priv);
5261 spin_unlock_irqrestore(&priv->lock, flags);
5262
5263 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5264 if (err) {
5265 IWL_ERROR("failed to create sysfs device attributes\n");
5266 goto out_uninit_drv;
5267 }
5268
5269
5270 iwl4965_setup_deferred_work(priv);
5271 iwl4965_setup_rx_handlers(priv);
5272
5273 /********************
5274 * 9. Conclude
5275 ********************/
5276 pci_save_state(pdev);
5277 pci_disable_device(pdev);
5278
5279 /**********************************
5280 * 10. Setup and register mac80211
5281 **********************************/
5282
5283 err = iwl_setup_mac(priv);
5284 if (err)
5285 goto out_remove_sysfs;
5286
5287 err = iwl_dbgfs_register(priv, DRV_NAME);
5288 if (err)
5289 IWL_ERROR("failed to create debugfs files\n");
5290
5291 /* notify iwlcore to init */
5292 iwlcore_low_level_notify(priv, IWLCORE_INIT_EVT);
5293 return 0;
5294
5295 out_remove_sysfs:
5296 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5297 out_uninit_drv:
5298 iwl_uninit_drv(priv);
5299 out_free_eeprom:
5300 iwl_eeprom_free(priv);
5301 out_iounmap:
5302 pci_iounmap(pdev, priv->hw_base);
5303 out_pci_release_regions:
5304 pci_release_regions(pdev);
5305 pci_set_drvdata(pdev, NULL);
5306 out_pci_disable_device:
5307 pci_disable_device(pdev);
5308 out_ieee80211_free_hw:
5309 ieee80211_free_hw(priv->hw);
5310 out:
5311 return err;
5312 }
5313
5314 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
5315 {
5316 struct iwl_priv *priv = pci_get_drvdata(pdev);
5317 struct list_head *p, *q;
5318 int i;
5319 unsigned long flags;
5320
5321 if (!priv)
5322 return;
5323
5324 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
5325
5326 iwl_dbgfs_unregister(priv);
5327 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5328
5329 if (priv->mac80211_registered) {
5330 ieee80211_unregister_hw(priv->hw);
5331 priv->mac80211_registered = 0;
5332 }
5333
5334 set_bit(STATUS_EXIT_PENDING, &priv->status);
5335
5336 iwl4965_down(priv);
5337
5338 /* make sure we flush any pending irq or
5339 * tasklet for the driver
5340 */
5341 spin_lock_irqsave(&priv->lock, flags);
5342 iwl4965_disable_interrupts(priv);
5343 spin_unlock_irqrestore(&priv->lock, flags);
5344
5345 iwl_synchronize_irq(priv);
5346
5347 /* Free MAC hash list for ADHOC */
5348 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
5349 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
5350 list_del(p);
5351 kfree(list_entry(p, struct iwl4965_ibss_seq, list));
5352 }
5353 }
5354
5355 iwlcore_low_level_notify(priv, IWLCORE_REMOVE_EVT);
5356
5357 iwl4965_dealloc_ucode_pci(priv);
5358
5359 if (priv->rxq.bd)
5360 iwl_rx_queue_free(priv, &priv->rxq);
5361 iwl_hw_txq_ctx_free(priv);
5362
5363 iwlcore_clear_stations_table(priv);
5364 iwl_eeprom_free(priv);
5365
5366
5367 /*netif_stop_queue(dev); */
5368 flush_workqueue(priv->workqueue);
5369
5370 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
5371 * priv->workqueue... so we can't take down the workqueue
5372 * until now... */
5373 destroy_workqueue(priv->workqueue);
5374 priv->workqueue = NULL;
5375
5376 pci_iounmap(pdev, priv->hw_base);
5377 pci_release_regions(pdev);
5378 pci_disable_device(pdev);
5379 pci_set_drvdata(pdev, NULL);
5380
5381 iwl_uninit_drv(priv);
5382
5383 if (priv->ibss_beacon)
5384 dev_kfree_skb(priv->ibss_beacon);
5385
5386 ieee80211_free_hw(priv->hw);
5387 }
5388
5389 #ifdef CONFIG_PM
5390
5391 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
5392 {
5393 struct iwl_priv *priv = pci_get_drvdata(pdev);
5394
5395 if (priv->is_open) {
5396 set_bit(STATUS_IN_SUSPEND, &priv->status);
5397 iwl4965_mac_stop(priv->hw);
5398 priv->is_open = 1;
5399 }
5400
5401 pci_set_power_state(pdev, PCI_D3hot);
5402
5403 return 0;
5404 }
5405
5406 static int iwl4965_pci_resume(struct pci_dev *pdev)
5407 {
5408 struct iwl_priv *priv = pci_get_drvdata(pdev);
5409
5410 pci_set_power_state(pdev, PCI_D0);
5411
5412 if (priv->is_open)
5413 iwl4965_mac_start(priv->hw);
5414
5415 clear_bit(STATUS_IN_SUSPEND, &priv->status);
5416 return 0;
5417 }
5418
5419 #endif /* CONFIG_PM */
5420
5421 /*****************************************************************************
5422 *
5423 * driver and module entry point
5424 *
5425 *****************************************************************************/
5426
5427 /* Hardware specific file defines the PCI IDs table for that hardware module */
5428 static struct pci_device_id iwl_hw_card_ids[] = {
5429 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
5430 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
5431 #ifdef CONFIG_IWL5000
5432 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
5433 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
5434 {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
5435 #endif /* CONFIG_IWL5000 */
5436 {0}
5437 };
5438 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
5439
5440 static struct pci_driver iwl_driver = {
5441 .name = DRV_NAME,
5442 .id_table = iwl_hw_card_ids,
5443 .probe = iwl4965_pci_probe,
5444 .remove = __devexit_p(iwl4965_pci_remove),
5445 #ifdef CONFIG_PM
5446 .suspend = iwl4965_pci_suspend,
5447 .resume = iwl4965_pci_resume,
5448 #endif
5449 };
5450
5451 static int __init iwl4965_init(void)
5452 {
5453
5454 int ret;
5455 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
5456 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
5457
5458 ret = iwl4965_rate_control_register();
5459 if (ret) {
5460 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
5461 return ret;
5462 }
5463
5464 ret = pci_register_driver(&iwl_driver);
5465 if (ret) {
5466 IWL_ERROR("Unable to initialize PCI module\n");
5467 goto error_register;
5468 }
5469
5470 return ret;
5471
5472 error_register:
5473 iwl4965_rate_control_unregister();
5474 return ret;
5475 }
5476
5477 static void __exit iwl4965_exit(void)
5478 {
5479 pci_unregister_driver(&iwl_driver);
5480 iwl4965_rate_control_unregister();
5481 }
5482
5483 module_exit(iwl4965_exit);
5484 module_init(iwl4965_init);
Linux kernel - Deliverables
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