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iwlwifi: clean up in setup/cancel deferred work
[linux-2.6/sactl.git] / drivers / net / wireless / iwlwifi / iwl4965-base.c
blob0acd42bd43c571ca9a0f403d9eb5e846e50482d8
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 static void iwl4965_ht_conf(struct iwl_priv *priv,
638 struct ieee80211_bss_conf *bss_conf)
639 {
640 struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
641 struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
642 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
643
644 IWL_DEBUG_MAC80211("enter: \n");
645
646 iwl_conf->is_ht = bss_conf->assoc_ht;
647
648 if (!iwl_conf->is_ht)
649 return;
650
651 priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
652
653 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
654 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
655 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
656 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
657
658 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
659 iwl_conf->max_amsdu_size =
660 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
661
662 iwl_conf->supported_chan_width =
663 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
664 iwl_conf->extension_chan_offset =
665 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
666 /* If no above or below channel supplied disable FAT channel */
667 if (iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_ABOVE &&
668 iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_BELOW)
669 iwl_conf->supported_chan_width = 0;
670
671 iwl_conf->tx_mimo_ps_mode =
672 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
673 memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
674
675 iwl_conf->control_channel = ht_bss_conf->primary_channel;
676 iwl_conf->tx_chan_width =
677 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
678 iwl_conf->ht_protection =
679 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
680 iwl_conf->non_GF_STA_present =
681 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
682
683 IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
684 IWL_DEBUG_MAC80211("leave\n");
685 }
686
687 static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband,
688 u8 *pos, int *left)
689 {
690 struct ieee80211_ht_cap *ht_cap;
691
692 if (!sband || !sband->ht_info.ht_supported)
693 return;
694
695 if (*left < sizeof(struct ieee80211_ht_cap))
696 return;
697
698 *pos++ = sizeof(struct ieee80211_ht_cap);
699 ht_cap = (struct ieee80211_ht_cap *) pos;
700
701 ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap);
702 memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16);
703 ht_cap->ampdu_params_info =
704 (sband->ht_info.ampdu_factor & IEEE80211_HT_CAP_AMPDU_FACTOR) |
705 ((sband->ht_info.ampdu_density << 2) &
706 IEEE80211_HT_CAP_AMPDU_DENSITY);
707 *left -= sizeof(struct ieee80211_ht_cap);
708 }
709
710 /**
711 * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
712 */
713 static u16 iwl4965_fill_probe_req(struct iwl_priv *priv,
714 enum ieee80211_band band,
715 struct ieee80211_mgmt *frame,
716 int left, int is_direct)
717 {
718 int len = 0;
719 u8 *pos = NULL;
720 u16 active_rates, ret_rates, cck_rates, active_rate_basic;
721 const struct ieee80211_supported_band *sband =
722 iwl_get_hw_mode(priv, band);
723
724 /* Make sure there is enough space for the probe request,
725 * two mandatory IEs and the data */
726 left -= 24;
727 if (left < 0)
728 return 0;
729 len += 24;
730
731 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
732 memcpy(frame->da, iwl_bcast_addr, ETH_ALEN);
733 memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
734 memcpy(frame->bssid, iwl_bcast_addr, ETH_ALEN);
735 frame->seq_ctrl = 0;
736
737 /* fill in our indirect SSID IE */
738 /* ...next IE... */
739
740 left -= 2;
741 if (left < 0)
742 return 0;
743 len += 2;
744 pos = &(frame->u.probe_req.variable[0]);
745 *pos++ = WLAN_EID_SSID;
746 *pos++ = 0;
747
748 /* fill in our direct SSID IE... */
749 if (is_direct) {
750 /* ...next IE... */
751 left -= 2 + priv->essid_len;
752 if (left < 0)
753 return 0;
754 /* ... fill it in... */
755 *pos++ = WLAN_EID_SSID;
756 *pos++ = priv->essid_len;
757 memcpy(pos, priv->essid, priv->essid_len);
758 pos += priv->essid_len;
759 len += 2 + priv->essid_len;
760 }
761
762 /* fill in supported rate */
763 /* ...next IE... */
764 left -= 2;
765 if (left < 0)
766 return 0;
767
768 /* ... fill it in... */
769 *pos++ = WLAN_EID_SUPP_RATES;
770 *pos = 0;
771
772 /* exclude 60M rate */
773 active_rates = priv->rates_mask;
774 active_rates &= ~IWL_RATE_60M_MASK;
775
776 active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
777
778 cck_rates = IWL_CCK_RATES_MASK & active_rates;
779 ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
780 active_rate_basic, &left);
781 active_rates &= ~ret_rates;
782
783 ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
784 active_rate_basic, &left);
785 active_rates &= ~ret_rates;
786
787 len += 2 + *pos;
788 pos += (*pos) + 1;
789 if (active_rates == 0)
790 goto fill_end;
791
792 /* fill in supported extended rate */
793 /* ...next IE... */
794 left -= 2;
795 if (left < 0)
796 return 0;
797 /* ... fill it in... */
798 *pos++ = WLAN_EID_EXT_SUPP_RATES;
799 *pos = 0;
800 iwl4965_supported_rate_to_ie(pos, active_rates,
801 active_rate_basic, &left);
802 if (*pos > 0)
803 len += 2 + *pos;
804
805 fill_end:
806 /* fill in HT IE */
807 left -= 2;
808 if (left < 0)
809 return 0;
810
811 *pos++ = WLAN_EID_HT_CAPABILITY;
812 *pos = 0;
813
814 iwl_ht_cap_to_ie(sband, pos, &left);
815
816 if (*pos > 0)
817 len += 2 + *pos;
818 return (u16)len;
819 }
820
821 /*
822 * QoS support
823 */
824 static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
825 struct iwl4965_qosparam_cmd *qos)
826 {
827
828 return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
829 sizeof(struct iwl4965_qosparam_cmd), qos);
830 }
831
832 static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
833 {
834 unsigned long flags;
835
836 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
837 return;
838
839 if (!priv->qos_data.qos_enable)
840 return;
841
842 spin_lock_irqsave(&priv->lock, flags);
843 priv->qos_data.def_qos_parm.qos_flags = 0;
844
845 if (priv->qos_data.qos_cap.q_AP.queue_request &&
846 !priv->qos_data.qos_cap.q_AP.txop_request)
847 priv->qos_data.def_qos_parm.qos_flags |=
848 QOS_PARAM_FLG_TXOP_TYPE_MSK;
849 if (priv->qos_data.qos_active)
850 priv->qos_data.def_qos_parm.qos_flags |=
851 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
852
853 if (priv->current_ht_config.is_ht)
854 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
855
856 spin_unlock_irqrestore(&priv->lock, flags);
857
858 if (force || iwl_is_associated(priv)) {
859 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
860 priv->qos_data.qos_active,
861 priv->qos_data.def_qos_parm.qos_flags);
862
863 iwl4965_send_qos_params_command(priv,
864 &(priv->qos_data.def_qos_parm));
865 }
866 }
867
868 int iwl4965_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
869 {
870 /* Filter incoming packets to determine if they are targeted toward
871 * this network, discarding packets coming from ourselves */
872 switch (priv->iw_mode) {
873 case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source | BSSID */
874 /* packets from our adapter are dropped (echo) */
875 if (!compare_ether_addr(header->addr2, priv->mac_addr))
876 return 0;
877 /* {broad,multi}cast packets to our IBSS go through */
878 if (is_multicast_ether_addr(header->addr1))
879 return !compare_ether_addr(header->addr3, priv->bssid);
880 /* packets to our adapter go through */
881 return !compare_ether_addr(header->addr1, priv->mac_addr);
882 case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
883 /* packets from our adapter are dropped (echo) */
884 if (!compare_ether_addr(header->addr3, priv->mac_addr))
885 return 0;
886 /* {broad,multi}cast packets to our BSS go through */
887 if (is_multicast_ether_addr(header->addr1))
888 return !compare_ether_addr(header->addr2, priv->bssid);
889 /* packets to our adapter go through */
890 return !compare_ether_addr(header->addr1, priv->mac_addr);
891 default:
892 break;
893 }
894
895 return 1;
896 }
897
898
899
900 /**
901 * iwl4965_scan_cancel - Cancel any currently executing HW scan
902 *
903 * NOTE: priv->mutex is not required before calling this function
904 */
905 static int iwl4965_scan_cancel(struct iwl_priv *priv)
906 {
907 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
908 clear_bit(STATUS_SCANNING, &priv->status);
909 return 0;
910 }
911
912 if (test_bit(STATUS_SCANNING, &priv->status)) {
913 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
914 IWL_DEBUG_SCAN("Queuing scan abort.\n");
915 set_bit(STATUS_SCAN_ABORTING, &priv->status);
916 queue_work(priv->workqueue, &priv->abort_scan);
917
918 } else
919 IWL_DEBUG_SCAN("Scan abort already in progress.\n");
920
921 return test_bit(STATUS_SCANNING, &priv->status);
922 }
923
924 return 0;
925 }
926
927 /**
928 * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
929 * @ms: amount of time to wait (in milliseconds) for scan to abort
930 *
931 * NOTE: priv->mutex must be held before calling this function
932 */
933 static int iwl4965_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
934 {
935 unsigned long now = jiffies;
936 int ret;
937
938 ret = iwl4965_scan_cancel(priv);
939 if (ret && ms) {
940 mutex_unlock(&priv->mutex);
941 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
942 test_bit(STATUS_SCANNING, &priv->status))
943 msleep(1);
944 mutex_lock(&priv->mutex);
945
946 return test_bit(STATUS_SCANNING, &priv->status);
947 }
948
949 return ret;
950 }
951
952 static void iwl4965_sequence_reset(struct iwl_priv *priv)
953 {
954 /* Reset ieee stats */
955
956 /* We don't reset the net_device_stats (ieee->stats) on
957 * re-association */
958
959 priv->last_seq_num = -1;
960 priv->last_frag_num = -1;
961 priv->last_packet_time = 0;
962
963 iwl4965_scan_cancel(priv);
964 }
965
966 #define MAX_UCODE_BEACON_INTERVAL 4096
967 #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
968
969 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
970 {
971 u16 new_val = 0;
972 u16 beacon_factor = 0;
973
974 beacon_factor =
975 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
976 / MAX_UCODE_BEACON_INTERVAL;
977 new_val = beacon_val / beacon_factor;
978
979 return cpu_to_le16(new_val);
980 }
981
982 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
983 {
984 u64 interval_tm_unit;
985 u64 tsf, result;
986 unsigned long flags;
987 struct ieee80211_conf *conf = NULL;
988 u16 beacon_int = 0;
989
990 conf = ieee80211_get_hw_conf(priv->hw);
991
992 spin_lock_irqsave(&priv->lock, flags);
993 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
994 priv->rxon_timing.timestamp.dw[0] =
995 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
996
997 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
998
999 tsf = priv->timestamp;
1000
1001 beacon_int = priv->beacon_int;
1002 spin_unlock_irqrestore(&priv->lock, flags);
1003
1004 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
1005 if (beacon_int == 0) {
1006 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
1007 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
1008 } else {
1009 priv->rxon_timing.beacon_interval =
1010 cpu_to_le16(beacon_int);
1011 priv->rxon_timing.beacon_interval =
1012 iwl4965_adjust_beacon_interval(
1013 le16_to_cpu(priv->rxon_timing.beacon_interval));
1014 }
1015
1016 priv->rxon_timing.atim_window = 0;
1017 } else {
1018 priv->rxon_timing.beacon_interval =
1019 iwl4965_adjust_beacon_interval(conf->beacon_int);
1020 /* TODO: we need to get atim_window from upper stack
1021 * for now we set to 0 */
1022 priv->rxon_timing.atim_window = 0;
1023 }
1024
1025 interval_tm_unit =
1026 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
1027 result = do_div(tsf, interval_tm_unit);
1028 priv->rxon_timing.beacon_init_val =
1029 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
1030
1031 IWL_DEBUG_ASSOC
1032 ("beacon interval %d beacon timer %d beacon tim %d\n",
1033 le16_to_cpu(priv->rxon_timing.beacon_interval),
1034 le32_to_cpu(priv->rxon_timing.beacon_init_val),
1035 le16_to_cpu(priv->rxon_timing.atim_window));
1036 }
1037
1038 static int iwl4965_scan_initiate(struct iwl_priv *priv)
1039 {
1040 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1041 IWL_ERROR("APs don't scan.\n");
1042 return 0;
1043 }
1044
1045 if (!iwl_is_ready_rf(priv)) {
1046 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
1047 return -EIO;
1048 }
1049
1050 if (test_bit(STATUS_SCANNING, &priv->status)) {
1051 IWL_DEBUG_SCAN("Scan already in progress.\n");
1052 return -EAGAIN;
1053 }
1054
1055 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1056 IWL_DEBUG_SCAN("Scan request while abort pending. "
1057 "Queuing.\n");
1058 return -EAGAIN;
1059 }
1060
1061 IWL_DEBUG_INFO("Starting scan...\n");
1062 priv->scan_bands = 2;
1063 set_bit(STATUS_SCANNING, &priv->status);
1064 priv->scan_start = jiffies;
1065 priv->scan_pass_start = priv->scan_start;
1066
1067 queue_work(priv->workqueue, &priv->request_scan);
1068
1069 return 0;
1070 }
1071
1072
1073 static void iwl_set_flags_for_band(struct iwl_priv *priv,
1074 enum ieee80211_band band)
1075 {
1076 if (band == IEEE80211_BAND_5GHZ) {
1077 priv->staging_rxon.flags &=
1078 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1079 | RXON_FLG_CCK_MSK);
1080 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1081 } else {
1082 /* Copied from iwl4965_post_associate() */
1083 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1084 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1085 else
1086 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1087
1088 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
1089 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1090
1091 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1092 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1093 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1094 }
1095 }
1096
1097 /*
1098 * initialize rxon structure with default values from eeprom
1099 */
1100 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
1101 {
1102 const struct iwl_channel_info *ch_info;
1103
1104 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1105
1106 switch (priv->iw_mode) {
1107 case IEEE80211_IF_TYPE_AP:
1108 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1109 break;
1110
1111 case IEEE80211_IF_TYPE_STA:
1112 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1113 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1114 break;
1115
1116 case IEEE80211_IF_TYPE_IBSS:
1117 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1118 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1119 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1120 RXON_FILTER_ACCEPT_GRP_MSK;
1121 break;
1122
1123 case IEEE80211_IF_TYPE_MNTR:
1124 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
1125 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
1126 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
1127 break;
1128 default:
1129 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
1130 break;
1131 }
1132
1133 #if 0
1134 /* TODO: Figure out when short_preamble would be set and cache from
1135 * that */
1136 if (!hw_to_local(priv->hw)->short_preamble)
1137 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1138 else
1139 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1140 #endif
1141
1142 ch_info = iwl_get_channel_info(priv, priv->band,
1143 le16_to_cpu(priv->staging_rxon.channel));
1144
1145 if (!ch_info)
1146 ch_info = &priv->channel_info[0];
1147
1148 /*
1149 * in some case A channels are all non IBSS
1150 * in this case force B/G channel
1151 */
1152 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
1153 !(is_channel_ibss(ch_info)))
1154 ch_info = &priv->channel_info[0];
1155
1156 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1157 priv->band = ch_info->band;
1158
1159 iwl_set_flags_for_band(priv, priv->band);
1160
1161 priv->staging_rxon.ofdm_basic_rates =
1162 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1163 priv->staging_rxon.cck_basic_rates =
1164 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1165
1166 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
1167 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
1168 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1169 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1170 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1171 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1172 iwl_set_rxon_chain(priv);
1173 }
1174
1175 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
1176 {
1177 if (mode == IEEE80211_IF_TYPE_IBSS) {
1178 const struct iwl_channel_info *ch_info;
1179
1180 ch_info = iwl_get_channel_info(priv,
1181 priv->band,
1182 le16_to_cpu(priv->staging_rxon.channel));
1183
1184 if (!ch_info || !is_channel_ibss(ch_info)) {
1185 IWL_ERROR("channel %d not IBSS channel\n",
1186 le16_to_cpu(priv->staging_rxon.channel));
1187 return -EINVAL;
1188 }
1189 }
1190
1191 priv->iw_mode = mode;
1192
1193 iwl4965_connection_init_rx_config(priv);
1194 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1195
1196 iwlcore_clear_stations_table(priv);
1197
1198 /* dont commit rxon if rf-kill is on*/
1199 if (!iwl_is_ready_rf(priv))
1200 return -EAGAIN;
1201
1202 cancel_delayed_work(&priv->scan_check);
1203 if (iwl4965_scan_cancel_timeout(priv, 100)) {
1204 IWL_WARNING("Aborted scan still in progress after 100ms\n");
1205 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
1206 return -EAGAIN;
1207 }
1208
1209 iwl4965_commit_rxon(priv);
1210
1211 return 0;
1212 }
1213
1214 static void iwl4965_set_rate(struct iwl_priv *priv)
1215 {
1216 const struct ieee80211_supported_band *hw = NULL;
1217 struct ieee80211_rate *rate;
1218 int i;
1219
1220 hw = iwl_get_hw_mode(priv, priv->band);
1221 if (!hw) {
1222 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
1223 return;
1224 }
1225
1226 priv->active_rate = 0;
1227 priv->active_rate_basic = 0;
1228
1229 for (i = 0; i < hw->n_bitrates; i++) {
1230 rate = &(hw->bitrates[i]);
1231 if (rate->hw_value < IWL_RATE_COUNT)
1232 priv->active_rate |= (1 << rate->hw_value);
1233 }
1234
1235 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
1236 priv->active_rate, priv->active_rate_basic);
1237
1238 /*
1239 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
1240 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
1241 * OFDM
1242 */
1243 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
1244 priv->staging_rxon.cck_basic_rates =
1245 ((priv->active_rate_basic &
1246 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
1247 else
1248 priv->staging_rxon.cck_basic_rates =
1249 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1250
1251 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
1252 priv->staging_rxon.ofdm_basic_rates =
1253 ((priv->active_rate_basic &
1254 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
1255 IWL_FIRST_OFDM_RATE) & 0xFF;
1256 else
1257 priv->staging_rxon.ofdm_basic_rates =
1258 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1259 }
1260
1261 void iwl4965_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
1262 {
1263 unsigned long flags;
1264
1265 if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
1266 return;
1267
1268 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
1269 disable_radio ? "OFF" : "ON");
1270
1271 if (disable_radio) {
1272 iwl4965_scan_cancel(priv);
1273 /* FIXME: This is a workaround for AP */
1274 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
1275 spin_lock_irqsave(&priv->lock, flags);
1276 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1277 CSR_UCODE_SW_BIT_RFKILL);
1278 spin_unlock_irqrestore(&priv->lock, flags);
1279 /* call the host command only if no hw rf-kill set */
1280 if (!test_bit(STATUS_RF_KILL_HW, &priv->status) &&
1281 iwl_is_ready(priv))
1282 iwl4965_send_card_state(priv,
1283 CARD_STATE_CMD_DISABLE,
1284 0);
1285 set_bit(STATUS_RF_KILL_SW, &priv->status);
1286
1287 /* make sure mac80211 stop sending Tx frame */
1288 if (priv->mac80211_registered)
1289 ieee80211_stop_queues(priv->hw);
1290 }
1291 return;
1292 }
1293
1294 spin_lock_irqsave(&priv->lock, flags);
1295 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1296
1297 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1298 spin_unlock_irqrestore(&priv->lock, flags);
1299
1300 /* wake up ucode */
1301 msleep(10);
1302
1303 spin_lock_irqsave(&priv->lock, flags);
1304 iwl_read32(priv, CSR_UCODE_DRV_GP1);
1305 if (!iwl_grab_nic_access(priv))
1306 iwl_release_nic_access(priv);
1307 spin_unlock_irqrestore(&priv->lock, flags);
1308
1309 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
1310 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
1311 "disabled by HW switch\n");
1312 return;
1313 }
1314
1315 queue_work(priv->workqueue, &priv->restart);
1316 return;
1317 }
1318
1319 #define IWL_PACKET_RETRY_TIME HZ
1320
1321 int iwl4965_is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
1322 {
1323 u16 sc = le16_to_cpu(header->seq_ctrl);
1324 u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
1325 u16 frag = sc & IEEE80211_SCTL_FRAG;
1326 u16 *last_seq, *last_frag;
1327 unsigned long *last_time;
1328
1329 switch (priv->iw_mode) {
1330 case IEEE80211_IF_TYPE_IBSS:{
1331 struct list_head *p;
1332 struct iwl4965_ibss_seq *entry = NULL;
1333 u8 *mac = header->addr2;
1334 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
1335
1336 __list_for_each(p, &priv->ibss_mac_hash[index]) {
1337 entry = list_entry(p, struct iwl4965_ibss_seq, list);
1338 if (!compare_ether_addr(entry->mac, mac))
1339 break;
1340 }
1341 if (p == &priv->ibss_mac_hash[index]) {
1342 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
1343 if (!entry) {
1344 IWL_ERROR("Cannot malloc new mac entry\n");
1345 return 0;
1346 }
1347 memcpy(entry->mac, mac, ETH_ALEN);
1348 entry->seq_num = seq;
1349 entry->frag_num = frag;
1350 entry->packet_time = jiffies;
1351 list_add(&entry->list, &priv->ibss_mac_hash[index]);
1352 return 0;
1353 }
1354 last_seq = &entry->seq_num;
1355 last_frag = &entry->frag_num;
1356 last_time = &entry->packet_time;
1357 break;
1358 }
1359 case IEEE80211_IF_TYPE_STA:
1360 last_seq = &priv->last_seq_num;
1361 last_frag = &priv->last_frag_num;
1362 last_time = &priv->last_packet_time;
1363 break;
1364 default:
1365 return 0;
1366 }
1367 if ((*last_seq == seq) &&
1368 time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
1369 if (*last_frag == frag)
1370 goto drop;
1371 if (*last_frag + 1 != frag)
1372 /* out-of-order fragment */
1373 goto drop;
1374 } else
1375 *last_seq = seq;
1376
1377 *last_frag = frag;
1378 *last_time = jiffies;
1379 return 0;
1380
1381 drop:
1382 return 1;
1383 }
1384
1385 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1386
1387 #include "iwl-spectrum.h"
1388
1389 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
1390 #define BEACON_TIME_MASK_HIGH 0xFF000000
1391 #define TIME_UNIT 1024
1392
1393 /*
1394 * extended beacon time format
1395 * time in usec will be changed into a 32-bit value in 8:24 format
1396 * the high 1 byte is the beacon counts
1397 * the lower 3 bytes is the time in usec within one beacon interval
1398 */
1399
1400 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
1401 {
1402 u32 quot;
1403 u32 rem;
1404 u32 interval = beacon_interval * 1024;
1405
1406 if (!interval || !usec)
1407 return 0;
1408
1409 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
1410 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
1411
1412 return (quot << 24) + rem;
1413 }
1414
1415 /* base is usually what we get from ucode with each received frame,
1416 * the same as HW timer counter counting down
1417 */
1418
1419 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
1420 {
1421 u32 base_low = base & BEACON_TIME_MASK_LOW;
1422 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
1423 u32 interval = beacon_interval * TIME_UNIT;
1424 u32 res = (base & BEACON_TIME_MASK_HIGH) +
1425 (addon & BEACON_TIME_MASK_HIGH);
1426
1427 if (base_low > addon_low)
1428 res += base_low - addon_low;
1429 else if (base_low < addon_low) {
1430 res += interval + base_low - addon_low;
1431 res += (1 << 24);
1432 } else
1433 res += (1 << 24);
1434
1435 return cpu_to_le32(res);
1436 }
1437
1438 static int iwl4965_get_measurement(struct iwl_priv *priv,
1439 struct ieee80211_measurement_params *params,
1440 u8 type)
1441 {
1442 struct iwl4965_spectrum_cmd spectrum;
1443 struct iwl_rx_packet *res;
1444 struct iwl_host_cmd cmd = {
1445 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
1446 .data = (void *)&spectrum,
1447 .meta.flags = CMD_WANT_SKB,
1448 };
1449 u32 add_time = le64_to_cpu(params->start_time);
1450 int rc;
1451 int spectrum_resp_status;
1452 int duration = le16_to_cpu(params->duration);
1453
1454 if (iwl_is_associated(priv))
1455 add_time =
1456 iwl4965_usecs_to_beacons(
1457 le64_to_cpu(params->start_time) - priv->last_tsf,
1458 le16_to_cpu(priv->rxon_timing.beacon_interval));
1459
1460 memset(&spectrum, 0, sizeof(spectrum));
1461
1462 spectrum.channel_count = cpu_to_le16(1);
1463 spectrum.flags =
1464 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
1465 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
1466 cmd.len = sizeof(spectrum);
1467 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
1468
1469 if (iwl_is_associated(priv))
1470 spectrum.start_time =
1471 iwl4965_add_beacon_time(priv->last_beacon_time,
1472 add_time,
1473 le16_to_cpu(priv->rxon_timing.beacon_interval));
1474 else
1475 spectrum.start_time = 0;
1476
1477 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
1478 spectrum.channels[0].channel = params->channel;
1479 spectrum.channels[0].type = type;
1480 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
1481 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
1482 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
1483
1484 rc = iwl_send_cmd_sync(priv, &cmd);
1485 if (rc)
1486 return rc;
1487
1488 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1489 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1490 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
1491 rc = -EIO;
1492 }
1493
1494 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
1495 switch (spectrum_resp_status) {
1496 case 0: /* Command will be handled */
1497 if (res->u.spectrum.id != 0xff) {
1498 IWL_DEBUG_INFO
1499 ("Replaced existing measurement: %d\n",
1500 res->u.spectrum.id);
1501 priv->measurement_status &= ~MEASUREMENT_READY;
1502 }
1503 priv->measurement_status |= MEASUREMENT_ACTIVE;
1504 rc = 0;
1505 break;
1506
1507 case 1: /* Command will not be handled */
1508 rc = -EAGAIN;
1509 break;
1510 }
1511
1512 dev_kfree_skb_any(cmd.meta.u.skb);
1513
1514 return rc;
1515 }
1516 #endif
1517
1518 /******************************************************************************
1519 *
1520 * Generic RX handler implementations
1521 *
1522 ******************************************************************************/
1523 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1524 struct iwl_rx_mem_buffer *rxb)
1525 {
1526 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1527 struct iwl_alive_resp *palive;
1528 struct delayed_work *pwork;
1529
1530 palive = &pkt->u.alive_frame;
1531
1532 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1533 "0x%01X 0x%01X\n",
1534 palive->is_valid, palive->ver_type,
1535 palive->ver_subtype);
1536
1537 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1538 IWL_DEBUG_INFO("Initialization Alive received.\n");
1539 memcpy(&priv->card_alive_init,
1540 &pkt->u.alive_frame,
1541 sizeof(struct iwl_init_alive_resp));
1542 pwork = &priv->init_alive_start;
1543 } else {
1544 IWL_DEBUG_INFO("Runtime Alive received.\n");
1545 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1546 sizeof(struct iwl_alive_resp));
1547 pwork = &priv->alive_start;
1548 }
1549
1550 /* We delay the ALIVE response by 5ms to
1551 * give the HW RF Kill time to activate... */
1552 if (palive->is_valid == UCODE_VALID_OK)
1553 queue_delayed_work(priv->workqueue, pwork,
1554 msecs_to_jiffies(5));
1555 else
1556 IWL_WARNING("uCode did not respond OK.\n");
1557 }
1558
1559 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1560 struct iwl_rx_mem_buffer *rxb)
1561 {
1562 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1563
1564 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1565 "seq 0x%04X ser 0x%08X\n",
1566 le32_to_cpu(pkt->u.err_resp.error_type),
1567 get_cmd_string(pkt->u.err_resp.cmd_id),
1568 pkt->u.err_resp.cmd_id,
1569 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1570 le32_to_cpu(pkt->u.err_resp.error_info));
1571 }
1572
1573 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1574
1575 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1576 {
1577 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1578 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1579 struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1580 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1581 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1582 rxon->channel = csa->channel;
1583 priv->staging_rxon.channel = csa->channel;
1584 }
1585
1586 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1587 struct iwl_rx_mem_buffer *rxb)
1588 {
1589 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1590 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1591 struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1592
1593 if (!report->state) {
1594 IWL_DEBUG(IWL_DL_11H,
1595 "Spectrum Measure Notification: Start\n");
1596 return;
1597 }
1598
1599 memcpy(&priv->measure_report, report, sizeof(*report));
1600 priv->measurement_status |= MEASUREMENT_READY;
1601 #endif
1602 }
1603
1604 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1605 struct iwl_rx_mem_buffer *rxb)
1606 {
1607 #ifdef CONFIG_IWLWIFI_DEBUG
1608 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1609 struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1610 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1611 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1612 #endif
1613 }
1614
1615 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1616 struct iwl_rx_mem_buffer *rxb)
1617 {
1618 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1619 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1620 "notification for %s:\n",
1621 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1622 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1623 }
1624
1625 static void iwl4965_bg_beacon_update(struct work_struct *work)
1626 {
1627 struct iwl_priv *priv =
1628 container_of(work, struct iwl_priv, beacon_update);
1629 struct sk_buff *beacon;
1630
1631 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1632 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1633
1634 if (!beacon) {
1635 IWL_ERROR("update beacon failed\n");
1636 return;
1637 }
1638
1639 mutex_lock(&priv->mutex);
1640 /* new beacon skb is allocated every time; dispose previous.*/
1641 if (priv->ibss_beacon)
1642 dev_kfree_skb(priv->ibss_beacon);
1643
1644 priv->ibss_beacon = beacon;
1645 mutex_unlock(&priv->mutex);
1646
1647 iwl4965_send_beacon_cmd(priv);
1648 }
1649
1650 /**
1651 * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1652 *
1653 * This callback is provided in order to send a statistics request.
1654 *
1655 * This timer function is continually reset to execute within
1656 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1657 * was received. We need to ensure we receive the statistics in order
1658 * to update the temperature used for calibrating the TXPOWER.
1659 */
1660 static void iwl4965_bg_statistics_periodic(unsigned long data)
1661 {
1662 struct iwl_priv *priv = (struct iwl_priv *)data;
1663
1664 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1665 return;
1666
1667 iwl_send_statistics_request(priv, CMD_ASYNC);
1668 }
1669
1670 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1671 struct iwl_rx_mem_buffer *rxb)
1672 {
1673 #ifdef CONFIG_IWLWIFI_DEBUG
1674 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1675 struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1676 u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1677
1678 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1679 "tsf %d %d rate %d\n",
1680 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
1681 beacon->beacon_notify_hdr.failure_frame,
1682 le32_to_cpu(beacon->ibss_mgr_status),
1683 le32_to_cpu(beacon->high_tsf),
1684 le32_to_cpu(beacon->low_tsf), rate);
1685 #endif
1686
1687 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
1688 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1689 queue_work(priv->workqueue, &priv->beacon_update);
1690 }
1691
1692 /* Service response to REPLY_SCAN_CMD (0x80) */
1693 static void iwl4965_rx_reply_scan(struct iwl_priv *priv,
1694 struct iwl_rx_mem_buffer *rxb)
1695 {
1696 #ifdef CONFIG_IWLWIFI_DEBUG
1697 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1698 struct iwl4965_scanreq_notification *notif =
1699 (struct iwl4965_scanreq_notification *)pkt->u.raw;
1700
1701 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
1702 #endif
1703 }
1704
1705 /* Service SCAN_START_NOTIFICATION (0x82) */
1706 static void iwl4965_rx_scan_start_notif(struct iwl_priv *priv,
1707 struct iwl_rx_mem_buffer *rxb)
1708 {
1709 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1710 struct iwl4965_scanstart_notification *notif =
1711 (struct iwl4965_scanstart_notification *)pkt->u.raw;
1712 priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
1713 IWL_DEBUG_SCAN("Scan start: "
1714 "%d [802.11%s] "
1715 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
1716 notif->channel,
1717 notif->band ? "bg" : "a",
1718 notif->tsf_high,
1719 notif->tsf_low, notif->status, notif->beacon_timer);
1720 }
1721
1722 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
1723 static void iwl4965_rx_scan_results_notif(struct iwl_priv *priv,
1724 struct iwl_rx_mem_buffer *rxb)
1725 {
1726 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1727 struct iwl4965_scanresults_notification *notif =
1728 (struct iwl4965_scanresults_notification *)pkt->u.raw;
1729
1730 IWL_DEBUG_SCAN("Scan ch.res: "
1731 "%d [802.11%s] "
1732 "(TSF: 0x%08X:%08X) - %d "
1733 "elapsed=%lu usec (%dms since last)\n",
1734 notif->channel,
1735 notif->band ? "bg" : "a",
1736 le32_to_cpu(notif->tsf_high),
1737 le32_to_cpu(notif->tsf_low),
1738 le32_to_cpu(notif->statistics[0]),
1739 le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
1740 jiffies_to_msecs(elapsed_jiffies
1741 (priv->last_scan_jiffies, jiffies)));
1742
1743 priv->last_scan_jiffies = jiffies;
1744 priv->next_scan_jiffies = 0;
1745 }
1746
1747 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
1748 static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv,
1749 struct iwl_rx_mem_buffer *rxb)
1750 {
1751 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1752 struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
1753
1754 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
1755 scan_notif->scanned_channels,
1756 scan_notif->tsf_low,
1757 scan_notif->tsf_high, scan_notif->status);
1758
1759 /* The HW is no longer scanning */
1760 clear_bit(STATUS_SCAN_HW, &priv->status);
1761
1762 /* The scan completion notification came in, so kill that timer... */
1763 cancel_delayed_work(&priv->scan_check);
1764
1765 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
1766 (priv->scan_bands == 2) ? "2.4" : "5.2",
1767 jiffies_to_msecs(elapsed_jiffies
1768 (priv->scan_pass_start, jiffies)));
1769
1770 /* Remove this scanned band from the list
1771 * of pending bands to scan */
1772 priv->scan_bands--;
1773
1774 /* If a request to abort was given, or the scan did not succeed
1775 * then we reset the scan state machine and terminate,
1776 * re-queuing another scan if one has been requested */
1777 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1778 IWL_DEBUG_INFO("Aborted scan completed.\n");
1779 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1780 } else {
1781 /* If there are more bands on this scan pass reschedule */
1782 if (priv->scan_bands > 0)
1783 goto reschedule;
1784 }
1785
1786 priv->last_scan_jiffies = jiffies;
1787 priv->next_scan_jiffies = 0;
1788 IWL_DEBUG_INFO("Setting scan to off\n");
1789
1790 clear_bit(STATUS_SCANNING, &priv->status);
1791
1792 IWL_DEBUG_INFO("Scan took %dms\n",
1793 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
1794
1795 queue_work(priv->workqueue, &priv->scan_completed);
1796
1797 return;
1798
1799 reschedule:
1800 priv->scan_pass_start = jiffies;
1801 queue_work(priv->workqueue, &priv->request_scan);
1802 }
1803
1804 /* Handle notification from uCode that card's power state is changing
1805 * due to software, hardware, or critical temperature RFKILL */
1806 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1807 struct iwl_rx_mem_buffer *rxb)
1808 {
1809 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1810 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1811 unsigned long status = priv->status;
1812
1813 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1814 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1815 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1816
1817 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1818 RF_CARD_DISABLED)) {
1819
1820 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1821 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1822
1823 if (!iwl_grab_nic_access(priv)) {
1824 iwl_write_direct32(
1825 priv, HBUS_TARG_MBX_C,
1826 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1827
1828 iwl_release_nic_access(priv);
1829 }
1830
1831 if (!(flags & RXON_CARD_DISABLED)) {
1832 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1833 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1834 if (!iwl_grab_nic_access(priv)) {
1835 iwl_write_direct32(
1836 priv, HBUS_TARG_MBX_C,
1837 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1838
1839 iwl_release_nic_access(priv);
1840 }
1841 }
1842
1843 if (flags & RF_CARD_DISABLED) {
1844 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1845 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1846 iwl_read32(priv, CSR_UCODE_DRV_GP1);
1847 if (!iwl_grab_nic_access(priv))
1848 iwl_release_nic_access(priv);
1849 }
1850 }
1851
1852 if (flags & HW_CARD_DISABLED)
1853 set_bit(STATUS_RF_KILL_HW, &priv->status);
1854 else
1855 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1856
1857
1858 if (flags & SW_CARD_DISABLED)
1859 set_bit(STATUS_RF_KILL_SW, &priv->status);
1860 else
1861 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1862
1863 if (!(flags & RXON_CARD_DISABLED))
1864 iwl4965_scan_cancel(priv);
1865
1866 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1867 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1868 (test_bit(STATUS_RF_KILL_SW, &status) !=
1869 test_bit(STATUS_RF_KILL_SW, &priv->status)))
1870 queue_work(priv->workqueue, &priv->rf_kill);
1871 else
1872 wake_up_interruptible(&priv->wait_command_queue);
1873 }
1874
1875 /* Cache phy data (Rx signal strength, etc) for HT frame (REPLY_RX_PHY_CMD).
1876 * This will be used later in iwl4965_rx_reply_rx() for REPLY_RX_MPDU_CMD. */
1877 static void iwl4965_rx_reply_rx_phy(struct iwl_priv *priv,
1878 struct iwl_rx_mem_buffer *rxb)
1879 {
1880 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1881 priv->last_phy_res[0] = 1;
1882 memcpy(&priv->last_phy_res[1], &(pkt->u.raw[0]),
1883 sizeof(struct iwl4965_rx_phy_res));
1884 }
1885
1886 /**
1887 * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1888 *
1889 * Setup the RX handlers for each of the reply types sent from the uCode
1890 * to the host.
1891 *
1892 * This function chains into the hardware specific files for them to setup
1893 * any hardware specific handlers as well.
1894 */
1895 static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
1896 {
1897 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1898 priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1899 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1900 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1901 iwl4965_rx_spectrum_measure_notif;
1902 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1903 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1904 iwl4965_rx_pm_debug_statistics_notif;
1905 priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1906
1907 /*
1908 * The same handler is used for both the REPLY to a discrete
1909 * statistics request from the host as well as for the periodic
1910 * statistics notifications (after received beacons) from the uCode.
1911 */
1912 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
1913 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
1914 /* scan handlers */
1915 priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
1916 priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
1917 priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
1918 iwl4965_rx_scan_results_notif;
1919 priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
1920 iwl4965_rx_scan_complete_notif;
1921 /* status change handler */
1922 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1923
1924 priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1925 iwl_rx_missed_beacon_notif;
1926 /* Rx handlers */
1927 priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl4965_rx_reply_rx_phy;
1928 priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl4965_rx_reply_rx;
1929 /* Set up hardware specific Rx handlers */
1930 priv->cfg->ops->lib->rx_handler_setup(priv);
1931 }
1932
1933 /*
1934 * this should be called while priv->lock is locked
1935 */
1936 static void __iwl_rx_replenish(struct iwl_priv *priv)
1937 {
1938 iwl_rx_allocate(priv);
1939 iwl_rx_queue_restock(priv);
1940 }
1941
1942
1943 /**
1944 * iwl_rx_handle - Main entry function for receiving responses from uCode
1945 *
1946 * Uses the priv->rx_handlers callback function array to invoke
1947 * the appropriate handlers, including command responses,
1948 * frame-received notifications, and other notifications.
1949 */
1950 void iwl_rx_handle(struct iwl_priv *priv)
1951 {
1952 struct iwl_rx_mem_buffer *rxb;
1953 struct iwl_rx_packet *pkt;
1954 struct iwl_rx_queue *rxq = &priv->rxq;
1955 u32 r, i;
1956 int reclaim;
1957 unsigned long flags;
1958 u8 fill_rx = 0;
1959 u32 count = 8;
1960
1961 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1962 * buffer that the driver may process (last buffer filled by ucode). */
1963 r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1964 i = rxq->read;
1965
1966 /* Rx interrupt, but nothing sent from uCode */
1967 if (i == r)
1968 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1969
1970 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1971 fill_rx = 1;
1972
1973 while (i != r) {
1974 rxb = rxq->queue[i];
1975
1976 /* If an RXB doesn't have a Rx queue slot associated with it,
1977 * then a bug has been introduced in the queue refilling
1978 * routines -- catch it here */
1979 BUG_ON(rxb == NULL);
1980
1981 rxq->queue[i] = NULL;
1982
1983 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1984 priv->hw_params.rx_buf_size,
1985 PCI_DMA_FROMDEVICE);
1986 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1987
1988 /* Reclaim a command buffer only if this packet is a response
1989 * to a (driver-originated) command.
1990 * If the packet (e.g. Rx frame) originated from uCode,
1991 * there is no command buffer to reclaim.
1992 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1993 * but apparently a few don't get set; catch them here. */
1994 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1995 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1996 (pkt->hdr.cmd != REPLY_RX) &&
1997 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1998 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1999 (pkt->hdr.cmd != REPLY_TX);
2000
2001 /* Based on type of command response or notification,
2002 * handle those that need handling via function in
2003 * rx_handlers table. See iwl4965_setup_rx_handlers() */
2004 if (priv->rx_handlers[pkt->hdr.cmd]) {
2005 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
2006 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
2007 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
2008 } else {
2009 /* No handling needed */
2010 IWL_DEBUG(IWL_DL_RX,
2011 "r %d i %d No handler needed for %s, 0x%02x\n",
2012 r, i, get_cmd_string(pkt->hdr.cmd),
2013 pkt->hdr.cmd);
2014 }
2015
2016 if (reclaim) {
2017 /* Invoke any callbacks, transfer the skb to caller, and
2018 * fire off the (possibly) blocking iwl_send_cmd()
2019 * as we reclaim the driver command queue */
2020 if (rxb && rxb->skb)
2021 iwl_tx_cmd_complete(priv, rxb);
2022 else
2023 IWL_WARNING("Claim null rxb?\n");
2024 }
2025
2026 /* For now we just don't re-use anything. We can tweak this
2027 * later to try and re-use notification packets and SKBs that
2028 * fail to Rx correctly */
2029 if (rxb->skb != NULL) {
2030 priv->alloc_rxb_skb--;
2031 dev_kfree_skb_any(rxb->skb);
2032 rxb->skb = NULL;
2033 }
2034
2035 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
2036 priv->hw_params.rx_buf_size,
2037 PCI_DMA_FROMDEVICE);
2038 spin_lock_irqsave(&rxq->lock, flags);
2039 list_add_tail(&rxb->list, &priv->rxq.rx_used);
2040 spin_unlock_irqrestore(&rxq->lock, flags);
2041 i = (i + 1) & RX_QUEUE_MASK;
2042 /* If there are a lot of unused frames,
2043 * restock the Rx queue so ucode wont assert. */
2044 if (fill_rx) {
2045 count++;
2046 if (count >= 8) {
2047 priv->rxq.read = i;
2048 __iwl_rx_replenish(priv);
2049 count = 0;
2050 }
2051 }
2052 }
2053
2054 /* Backtrack one entry */
2055 priv->rxq.read = i;
2056 iwl_rx_queue_restock(priv);
2057 }
2058 /* Convert linear signal-to-noise ratio into dB */
2059 static u8 ratio2dB[100] = {
2060 /* 0 1 2 3 4 5 6 7 8 9 */
2061 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
2062 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
2063 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
2064 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
2065 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
2066 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
2067 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
2068 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
2069 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
2070 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
2071 };
2072
2073 /* Calculates a relative dB value from a ratio of linear
2074 * (i.e. not dB) signal levels.
2075 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
2076 int iwl4965_calc_db_from_ratio(int sig_ratio)
2077 {
2078 /* 1000:1 or higher just report as 60 dB */
2079 if (sig_ratio >= 1000)
2080 return 60;
2081
2082 /* 100:1 or higher, divide by 10 and use table,
2083 * add 20 dB to make up for divide by 10 */
2084 if (sig_ratio >= 100)
2085 return (20 + (int)ratio2dB[sig_ratio/10]);
2086
2087 /* We shouldn't see this */
2088 if (sig_ratio < 1)
2089 return 0;
2090
2091 /* Use table for ratios 1:1 - 99:1 */
2092 return (int)ratio2dB[sig_ratio];
2093 }
2094
2095 #define PERFECT_RSSI (-20) /* dBm */
2096 #define WORST_RSSI (-95) /* dBm */
2097 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
2098
2099 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
2100 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
2101 * about formulas used below. */
2102 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
2103 {
2104 int sig_qual;
2105 int degradation = PERFECT_RSSI - rssi_dbm;
2106
2107 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
2108 * as indicator; formula is (signal dbm - noise dbm).
2109 * SNR at or above 40 is a great signal (100%).
2110 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
2111 * Weakest usable signal is usually 10 - 15 dB SNR. */
2112 if (noise_dbm) {
2113 if (rssi_dbm - noise_dbm >= 40)
2114 return 100;
2115 else if (rssi_dbm < noise_dbm)
2116 return 0;
2117 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
2118
2119 /* Else use just the signal level.
2120 * This formula is a least squares fit of data points collected and
2121 * compared with a reference system that had a percentage (%) display
2122 * for signal quality. */
2123 } else
2124 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
2125 (15 * RSSI_RANGE + 62 * degradation)) /
2126 (RSSI_RANGE * RSSI_RANGE);
2127
2128 if (sig_qual > 100)
2129 sig_qual = 100;
2130 else if (sig_qual < 1)
2131 sig_qual = 0;
2132
2133 return sig_qual;
2134 }
2135
2136 #ifdef CONFIG_IWLWIFI_DEBUG
2137 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
2138 {
2139 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
2140 DECLARE_MAC_BUF(mac);
2141
2142 IWL_DEBUG_RADIO("RX CONFIG:\n");
2143 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
2144 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
2145 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
2146 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
2147 le32_to_cpu(rxon->filter_flags));
2148 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
2149 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
2150 rxon->ofdm_basic_rates);
2151 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
2152 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
2153 print_mac(mac, rxon->node_addr));
2154 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
2155 print_mac(mac, rxon->bssid_addr));
2156 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
2157 }
2158 #endif
2159
2160 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
2161 {
2162 IWL_DEBUG_ISR("Enabling interrupts\n");
2163 set_bit(STATUS_INT_ENABLED, &priv->status);
2164 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
2165 }
2166
2167 /* call this function to flush any scheduled tasklet */
2168 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
2169 {
2170 /* wait to make sure we flush pedding tasklet*/
2171 synchronize_irq(priv->pci_dev->irq);
2172 tasklet_kill(&priv->irq_tasklet);
2173 }
2174
2175 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
2176 {
2177 clear_bit(STATUS_INT_ENABLED, &priv->status);
2178
2179 /* disable interrupts from uCode/NIC to host */
2180 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
2181
2182 /* acknowledge/clear/reset any interrupts still pending
2183 * from uCode or flow handler (Rx/Tx DMA) */
2184 iwl_write32(priv, CSR_INT, 0xffffffff);
2185 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
2186 IWL_DEBUG_ISR("Disabled interrupts\n");
2187 }
2188
2189
2190 /**
2191 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
2192 */
2193 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
2194 {
2195 /* Set the FW error flag -- cleared on iwl4965_down */
2196 set_bit(STATUS_FW_ERROR, &priv->status);
2197
2198 /* Cancel currently queued command. */
2199 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
2200
2201 #ifdef CONFIG_IWLWIFI_DEBUG
2202 if (priv->debug_level & IWL_DL_FW_ERRORS) {
2203 iwl_dump_nic_error_log(priv);
2204 iwl_dump_nic_event_log(priv);
2205 iwl4965_print_rx_config_cmd(priv);
2206 }
2207 #endif
2208
2209 wake_up_interruptible(&priv->wait_command_queue);
2210
2211 /* Keep the restart process from trying to send host
2212 * commands by clearing the INIT status bit */
2213 clear_bit(STATUS_READY, &priv->status);
2214
2215 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2216 IWL_DEBUG(IWL_DL_FW_ERRORS,
2217 "Restarting adapter due to uCode error.\n");
2218
2219 if (iwl_is_associated(priv)) {
2220 memcpy(&priv->recovery_rxon, &priv->active_rxon,
2221 sizeof(priv->recovery_rxon));
2222 priv->error_recovering = 1;
2223 }
2224 if (priv->cfg->mod_params->restart_fw)
2225 queue_work(priv->workqueue, &priv->restart);
2226 }
2227 }
2228
2229 static void iwl4965_error_recovery(struct iwl_priv *priv)
2230 {
2231 unsigned long flags;
2232
2233 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
2234 sizeof(priv->staging_rxon));
2235 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2236 iwl4965_commit_rxon(priv);
2237
2238 iwl_rxon_add_station(priv, priv->bssid, 1);
2239
2240 spin_lock_irqsave(&priv->lock, flags);
2241 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
2242 priv->error_recovering = 0;
2243 spin_unlock_irqrestore(&priv->lock, flags);
2244 }
2245
2246 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
2247 {
2248 u32 inta, handled = 0;
2249 u32 inta_fh;
2250 unsigned long flags;
2251 #ifdef CONFIG_IWLWIFI_DEBUG
2252 u32 inta_mask;
2253 #endif
2254
2255 spin_lock_irqsave(&priv->lock, flags);
2256
2257 /* Ack/clear/reset pending uCode interrupts.
2258 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
2259 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
2260 inta = iwl_read32(priv, CSR_INT);
2261 iwl_write32(priv, CSR_INT, inta);
2262
2263 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
2264 * Any new interrupts that happen after this, either while we're
2265 * in this tasklet, or later, will show up in next ISR/tasklet. */
2266 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2267 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
2268
2269 #ifdef CONFIG_IWLWIFI_DEBUG
2270 if (priv->debug_level & IWL_DL_ISR) {
2271 /* just for debug */
2272 inta_mask = iwl_read32(priv, CSR_INT_MASK);
2273 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2274 inta, inta_mask, inta_fh);
2275 }
2276 #endif
2277
2278 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
2279 * atomic, make sure that inta covers all the interrupts that
2280 * we've discovered, even if FH interrupt came in just after
2281 * reading CSR_INT. */
2282 if (inta_fh & CSR49_FH_INT_RX_MASK)
2283 inta |= CSR_INT_BIT_FH_RX;
2284 if (inta_fh & CSR49_FH_INT_TX_MASK)
2285 inta |= CSR_INT_BIT_FH_TX;
2286
2287 /* Now service all interrupt bits discovered above. */
2288 if (inta & CSR_INT_BIT_HW_ERR) {
2289 IWL_ERROR("Microcode HW error detected. Restarting.\n");
2290
2291 /* Tell the device to stop sending interrupts */
2292 iwl4965_disable_interrupts(priv);
2293
2294 iwl4965_irq_handle_error(priv);
2295
2296 handled |= CSR_INT_BIT_HW_ERR;
2297
2298 spin_unlock_irqrestore(&priv->lock, flags);
2299
2300 return;
2301 }
2302
2303 #ifdef CONFIG_IWLWIFI_DEBUG
2304 if (priv->debug_level & (IWL_DL_ISR)) {
2305 /* NIC fires this, but we don't use it, redundant with WAKEUP */
2306 if (inta & CSR_INT_BIT_SCD)
2307 IWL_DEBUG_ISR("Scheduler finished to transmit "
2308 "the frame/frames.\n");
2309
2310 /* Alive notification via Rx interrupt will do the real work */
2311 if (inta & CSR_INT_BIT_ALIVE)
2312 IWL_DEBUG_ISR("Alive interrupt\n");
2313 }
2314 #endif
2315 /* Safely ignore these bits for debug checks below */
2316 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
2317
2318 /* HW RF KILL switch toggled */
2319 if (inta & CSR_INT_BIT_RF_KILL) {
2320 int hw_rf_kill = 0;
2321 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
2322 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
2323 hw_rf_kill = 1;
2324
2325 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
2326 hw_rf_kill ? "disable radio":"enable radio");
2327
2328 /* Queue restart only if RF_KILL switch was set to "kill"
2329 * when we loaded driver, and is now set to "enable".
2330 * After we're Alive, RF_KILL gets handled by
2331 * iwl4965_rx_card_state_notif() */
2332 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
2333 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2334 queue_work(priv->workqueue, &priv->restart);
2335 }
2336
2337 handled |= CSR_INT_BIT_RF_KILL;
2338 }
2339
2340 /* Chip got too hot and stopped itself */
2341 if (inta & CSR_INT_BIT_CT_KILL) {
2342 IWL_ERROR("Microcode CT kill error detected.\n");
2343 handled |= CSR_INT_BIT_CT_KILL;
2344 }
2345
2346 /* Error detected by uCode */
2347 if (inta & CSR_INT_BIT_SW_ERR) {
2348 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
2349 inta);
2350 iwl4965_irq_handle_error(priv);
2351 handled |= CSR_INT_BIT_SW_ERR;
2352 }
2353
2354 /* uCode wakes up after power-down sleep */
2355 if (inta & CSR_INT_BIT_WAKEUP) {
2356 IWL_DEBUG_ISR("Wakeup interrupt\n");
2357 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
2358 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
2359 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
2360 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
2361 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
2362 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
2363 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
2364
2365 handled |= CSR_INT_BIT_WAKEUP;
2366 }
2367
2368 /* All uCode command responses, including Tx command responses,
2369 * Rx "responses" (frame-received notification), and other
2370 * notifications from uCode come through here*/
2371 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
2372 iwl_rx_handle(priv);
2373 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
2374 }
2375
2376 if (inta & CSR_INT_BIT_FH_TX) {
2377 IWL_DEBUG_ISR("Tx interrupt\n");
2378 handled |= CSR_INT_BIT_FH_TX;
2379 /* FH finished to write, send event */
2380 priv->ucode_write_complete = 1;
2381 wake_up_interruptible(&priv->wait_command_queue);
2382 }
2383
2384 if (inta & ~handled)
2385 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
2386
2387 if (inta & ~CSR_INI_SET_MASK) {
2388 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
2389 inta & ~CSR_INI_SET_MASK);
2390 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
2391 }
2392
2393 /* Re-enable all interrupts */
2394 /* only Re-enable if diabled by irq */
2395 if (test_bit(STATUS_INT_ENABLED, &priv->status))
2396 iwl4965_enable_interrupts(priv);
2397
2398 #ifdef CONFIG_IWLWIFI_DEBUG
2399 if (priv->debug_level & (IWL_DL_ISR)) {
2400 inta = iwl_read32(priv, CSR_INT);
2401 inta_mask = iwl_read32(priv, CSR_INT_MASK);
2402 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2403 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
2404 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
2405 }
2406 #endif
2407 spin_unlock_irqrestore(&priv->lock, flags);
2408 }
2409
2410 static irqreturn_t iwl4965_isr(int irq, void *data)
2411 {
2412 struct iwl_priv *priv = data;
2413 u32 inta, inta_mask;
2414 u32 inta_fh;
2415 if (!priv)
2416 return IRQ_NONE;
2417
2418 spin_lock(&priv->lock);
2419
2420 /* Disable (but don't clear!) interrupts here to avoid
2421 * back-to-back ISRs and sporadic interrupts from our NIC.
2422 * If we have something to service, the tasklet will re-enable ints.
2423 * If we *don't* have something, we'll re-enable before leaving here. */
2424 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
2425 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
2426
2427 /* Discover which interrupts are active/pending */
2428 inta = iwl_read32(priv, CSR_INT);
2429 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2430
2431 /* Ignore interrupt if there's nothing in NIC to service.
2432 * This may be due to IRQ shared with another device,
2433 * or due to sporadic interrupts thrown from our NIC. */
2434 if (!inta && !inta_fh) {
2435 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
2436 goto none;
2437 }
2438
2439 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
2440 /* Hardware disappeared. It might have already raised
2441 * an interrupt */
2442 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
2443 goto unplugged;
2444 }
2445
2446 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2447 inta, inta_mask, inta_fh);
2448
2449 inta &= ~CSR_INT_BIT_SCD;
2450
2451 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
2452 if (likely(inta || inta_fh))
2453 tasklet_schedule(&priv->irq_tasklet);
2454
2455 unplugged:
2456 spin_unlock(&priv->lock);
2457 return IRQ_HANDLED;
2458
2459 none:
2460 /* re-enable interrupts here since we don't have anything to service. */
2461 /* only Re-enable if diabled by irq */
2462 if (test_bit(STATUS_INT_ENABLED, &priv->status))
2463 iwl4965_enable_interrupts(priv);
2464 spin_unlock(&priv->lock);
2465 return IRQ_NONE;
2466 }
2467
2468 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
2469 * sending probe req. This should be set long enough to hear probe responses
2470 * from more than one AP. */
2471 #define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
2472 #define IWL_ACTIVE_DWELL_TIME_52 (10)
2473
2474 /* For faster active scanning, scan will move to the next channel if fewer than
2475 * PLCP_QUIET_THRESH packets are heard on this channel within
2476 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
2477 * time if it's a quiet channel (nothing responded to our probe, and there's
2478 * no other traffic).
2479 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
2480 #define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
2481 #define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
2482
2483 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
2484 * Must be set longer than active dwell time.
2485 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
2486 #define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
2487 #define IWL_PASSIVE_DWELL_TIME_52 (10)
2488 #define IWL_PASSIVE_DWELL_BASE (100)
2489 #define IWL_CHANNEL_TUNE_TIME 5
2490
2491 static inline u16 iwl4965_get_active_dwell_time(struct iwl_priv *priv,
2492 enum ieee80211_band band)
2493 {
2494 if (band == IEEE80211_BAND_5GHZ)
2495 return IWL_ACTIVE_DWELL_TIME_52;
2496 else
2497 return IWL_ACTIVE_DWELL_TIME_24;
2498 }
2499
2500 static u16 iwl4965_get_passive_dwell_time(struct iwl_priv *priv,
2501 enum ieee80211_band band)
2502 {
2503 u16 active = iwl4965_get_active_dwell_time(priv, band);
2504 u16 passive = (band != IEEE80211_BAND_5GHZ) ?
2505 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
2506 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
2507
2508 if (iwl_is_associated(priv)) {
2509 /* If we're associated, we clamp the maximum passive
2510 * dwell time to be 98% of the beacon interval (minus
2511 * 2 * channel tune time) */
2512 passive = priv->beacon_int;
2513 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
2514 passive = IWL_PASSIVE_DWELL_BASE;
2515 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
2516 }
2517
2518 if (passive <= active)
2519 passive = active + 1;
2520
2521 return passive;
2522 }
2523
2524 static int iwl4965_get_channels_for_scan(struct iwl_priv *priv,
2525 enum ieee80211_band band,
2526 u8 is_active, u8 direct_mask,
2527 struct iwl4965_scan_channel *scan_ch)
2528 {
2529 const struct ieee80211_channel *channels = NULL;
2530 const struct ieee80211_supported_band *sband;
2531 const struct iwl_channel_info *ch_info;
2532 u16 passive_dwell = 0;
2533 u16 active_dwell = 0;
2534 int added, i;
2535
2536 sband = iwl_get_hw_mode(priv, band);
2537 if (!sband)
2538 return 0;
2539
2540 channels = sband->channels;
2541
2542 active_dwell = iwl4965_get_active_dwell_time(priv, band);
2543 passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
2544
2545 for (i = 0, added = 0; i < sband->n_channels; i++) {
2546 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
2547 continue;
2548
2549 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
2550
2551 ch_info = iwl_get_channel_info(priv, band,
2552 scan_ch->channel);
2553 if (!is_channel_valid(ch_info)) {
2554 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
2555 scan_ch->channel);
2556 continue;
2557 }
2558
2559 if (!is_active || is_channel_passive(ch_info) ||
2560 (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
2561 scan_ch->type = 0; /* passive */
2562 else
2563 scan_ch->type = 1; /* active */
2564
2565 if (scan_ch->type & 1)
2566 scan_ch->type |= (direct_mask << 1);
2567
2568 scan_ch->active_dwell = cpu_to_le16(active_dwell);
2569 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
2570
2571 /* Set txpower levels to defaults */
2572 scan_ch->tpc.dsp_atten = 110;
2573 /* scan_pwr_info->tpc.dsp_atten; */
2574
2575 /*scan_pwr_info->tpc.tx_gain; */
2576 if (band == IEEE80211_BAND_5GHZ)
2577 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
2578 else {
2579 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
2580 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
2581 * power level:
2582 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
2583 */
2584 }
2585
2586 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
2587 scan_ch->channel,
2588 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
2589 (scan_ch->type & 1) ?
2590 active_dwell : passive_dwell);
2591
2592 scan_ch++;
2593 added++;
2594 }
2595
2596 IWL_DEBUG_SCAN("total channels to scan %d \n", added);
2597 return added;
2598 }
2599
2600 /******************************************************************************
2601 *
2602 * uCode download functions
2603 *
2604 ******************************************************************************/
2605
2606 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
2607 {
2608 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
2609 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
2610 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2611 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
2612 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2613 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
2614 }
2615
2616 static void iwl4965_nic_start(struct iwl_priv *priv)
2617 {
2618 /* Remove all resets to allow NIC to operate */
2619 iwl_write32(priv, CSR_RESET, 0);
2620 }
2621
2622
2623 /**
2624 * iwl4965_read_ucode - Read uCode images from disk file.
2625 *
2626 * Copy into buffers for card to fetch via bus-mastering
2627 */
2628 static int iwl4965_read_ucode(struct iwl_priv *priv)
2629 {
2630 struct iwl4965_ucode *ucode;
2631 int ret;
2632 const struct firmware *ucode_raw;
2633 const char *name = priv->cfg->fw_name;
2634 u8 *src;
2635 size_t len;
2636 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
2637
2638 /* Ask kernel firmware_class module to get the boot firmware off disk.
2639 * request_firmware() is synchronous, file is in memory on return. */
2640 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
2641 if (ret < 0) {
2642 IWL_ERROR("%s firmware file req failed: Reason %d\n",
2643 name, ret);
2644 goto error;
2645 }
2646
2647 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
2648 name, ucode_raw->size);
2649
2650 /* Make sure that we got at least our header! */
2651 if (ucode_raw->size < sizeof(*ucode)) {
2652 IWL_ERROR("File size way too small!\n");
2653 ret = -EINVAL;
2654 goto err_release;
2655 }
2656
2657 /* Data from ucode file: header followed by uCode images */
2658 ucode = (void *)ucode_raw->data;
2659
2660 ver = le32_to_cpu(ucode->ver);
2661 inst_size = le32_to_cpu(ucode->inst_size);
2662 data_size = le32_to_cpu(ucode->data_size);
2663 init_size = le32_to_cpu(ucode->init_size);
2664 init_data_size = le32_to_cpu(ucode->init_data_size);
2665 boot_size = le32_to_cpu(ucode->boot_size);
2666
2667 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
2668 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
2669 inst_size);
2670 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
2671 data_size);
2672 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
2673 init_size);
2674 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
2675 init_data_size);
2676 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
2677 boot_size);
2678
2679 /* Verify size of file vs. image size info in file's header */
2680 if (ucode_raw->size < sizeof(*ucode) +
2681 inst_size + data_size + init_size +
2682 init_data_size + boot_size) {
2683
2684 IWL_DEBUG_INFO("uCode file size %d too small\n",
2685 (int)ucode_raw->size);
2686 ret = -EINVAL;
2687 goto err_release;
2688 }
2689
2690 /* Verify that uCode images will fit in card's SRAM */
2691 if (inst_size > priv->hw_params.max_inst_size) {
2692 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
2693 inst_size);
2694 ret = -EINVAL;
2695 goto err_release;
2696 }
2697
2698 if (data_size > priv->hw_params.max_data_size) {
2699 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
2700 data_size);
2701 ret = -EINVAL;
2702 goto err_release;
2703 }
2704 if (init_size > priv->hw_params.max_inst_size) {
2705 IWL_DEBUG_INFO
2706 ("uCode init instr len %d too large to fit in\n",
2707 init_size);
2708 ret = -EINVAL;
2709 goto err_release;
2710 }
2711 if (init_data_size > priv->hw_params.max_data_size) {
2712 IWL_DEBUG_INFO
2713 ("uCode init data len %d too large to fit in\n",
2714 init_data_size);
2715 ret = -EINVAL;
2716 goto err_release;
2717 }
2718 if (boot_size > priv->hw_params.max_bsm_size) {
2719 IWL_DEBUG_INFO
2720 ("uCode boot instr len %d too large to fit in\n",
2721 boot_size);
2722 ret = -EINVAL;
2723 goto err_release;
2724 }
2725
2726 /* Allocate ucode buffers for card's bus-master loading ... */
2727
2728 /* Runtime instructions and 2 copies of data:
2729 * 1) unmodified from disk
2730 * 2) backup cache for save/restore during power-downs */
2731 priv->ucode_code.len = inst_size;
2732 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2733
2734 priv->ucode_data.len = data_size;
2735 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2736
2737 priv->ucode_data_backup.len = data_size;
2738 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2739
2740 /* Initialization instructions and data */
2741 if (init_size && init_data_size) {
2742 priv->ucode_init.len = init_size;
2743 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2744
2745 priv->ucode_init_data.len = init_data_size;
2746 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2747
2748 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2749 goto err_pci_alloc;
2750 }
2751
2752 /* Bootstrap (instructions only, no data) */
2753 if (boot_size) {
2754 priv->ucode_boot.len = boot_size;
2755 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2756
2757 if (!priv->ucode_boot.v_addr)
2758 goto err_pci_alloc;
2759 }
2760
2761 /* Copy images into buffers for card's bus-master reads ... */
2762
2763 /* Runtime instructions (first block of data in file) */
2764 src = &ucode->data[0];
2765 len = priv->ucode_code.len;
2766 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
2767 memcpy(priv->ucode_code.v_addr, src, len);
2768 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2769 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2770
2771 /* Runtime data (2nd block)
2772 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
2773 src = &ucode->data[inst_size];
2774 len = priv->ucode_data.len;
2775 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
2776 memcpy(priv->ucode_data.v_addr, src, len);
2777 memcpy(priv->ucode_data_backup.v_addr, src, len);
2778
2779 /* Initialization instructions (3rd block) */
2780 if (init_size) {
2781 src = &ucode->data[inst_size + data_size];
2782 len = priv->ucode_init.len;
2783 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
2784 len);
2785 memcpy(priv->ucode_init.v_addr, src, len);
2786 }
2787
2788 /* Initialization data (4th block) */
2789 if (init_data_size) {
2790 src = &ucode->data[inst_size + data_size + init_size];
2791 len = priv->ucode_init_data.len;
2792 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
2793 len);
2794 memcpy(priv->ucode_init_data.v_addr, src, len);
2795 }
2796
2797 /* Bootstrap instructions (5th block) */
2798 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
2799 len = priv->ucode_boot.len;
2800 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
2801 memcpy(priv->ucode_boot.v_addr, src, len);
2802
2803 /* We have our copies now, allow OS release its copies */
2804 release_firmware(ucode_raw);
2805 return 0;
2806
2807 err_pci_alloc:
2808 IWL_ERROR("failed to allocate pci memory\n");
2809 ret = -ENOMEM;
2810 iwl4965_dealloc_ucode_pci(priv);
2811
2812 err_release:
2813 release_firmware(ucode_raw);
2814
2815 error:
2816 return ret;
2817 }
2818
2819 /**
2820 * iwl_alive_start - called after REPLY_ALIVE notification received
2821 * from protocol/runtime uCode (initialization uCode's
2822 * Alive gets handled by iwl_init_alive_start()).
2823 */
2824 static void iwl_alive_start(struct iwl_priv *priv)
2825 {
2826 int ret = 0;
2827
2828 IWL_DEBUG_INFO("Runtime Alive received.\n");
2829
2830 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2831 /* We had an error bringing up the hardware, so take it
2832 * all the way back down so we can try again */
2833 IWL_DEBUG_INFO("Alive failed.\n");
2834 goto restart;
2835 }
2836
2837 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2838 * This is a paranoid check, because we would not have gotten the
2839 * "runtime" alive if code weren't properly loaded. */
2840 if (iwl_verify_ucode(priv)) {
2841 /* Runtime instruction load was bad;
2842 * take it all the way back down so we can try again */
2843 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
2844 goto restart;
2845 }
2846
2847 iwlcore_clear_stations_table(priv);
2848 ret = priv->cfg->ops->lib->alive_notify(priv);
2849 if (ret) {
2850 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
2851 ret);
2852 goto restart;
2853 }
2854
2855 /* After the ALIVE response, we can send host commands to 4965 uCode */
2856 set_bit(STATUS_ALIVE, &priv->status);
2857
2858 /* Clear out the uCode error bit if it is set */
2859 clear_bit(STATUS_FW_ERROR, &priv->status);
2860
2861 if (iwl_is_rfkill(priv))
2862 return;
2863
2864 ieee80211_wake_queues(priv->hw);
2865
2866 priv->active_rate = priv->rates_mask;
2867 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2868
2869 if (iwl_is_associated(priv)) {
2870 struct iwl_rxon_cmd *active_rxon =
2871 (struct iwl_rxon_cmd *)&priv->active_rxon;
2872
2873 memcpy(&priv->staging_rxon, &priv->active_rxon,
2874 sizeof(priv->staging_rxon));
2875 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2876 } else {
2877 /* Initialize our rx_config data */
2878 iwl4965_connection_init_rx_config(priv);
2879 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2880 }
2881
2882 /* Configure Bluetooth device coexistence support */
2883 iwl4965_send_bt_config(priv);
2884
2885 iwl_reset_run_time_calib(priv);
2886
2887 /* Configure the adapter for unassociated operation */
2888 iwl4965_commit_rxon(priv);
2889
2890 /* At this point, the NIC is initialized and operational */
2891 iwl4965_rf_kill_ct_config(priv);
2892
2893 iwl_leds_register(priv);
2894
2895 IWL_DEBUG_INFO("ALIVE processing complete.\n");
2896 set_bit(STATUS_READY, &priv->status);
2897 wake_up_interruptible(&priv->wait_command_queue);
2898
2899 if (priv->error_recovering)
2900 iwl4965_error_recovery(priv);
2901
2902 iwlcore_low_level_notify(priv, IWLCORE_START_EVT);
2903 ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2904 return;
2905
2906 restart:
2907 queue_work(priv->workqueue, &priv->restart);
2908 }
2909
2910 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2911
2912 static void __iwl4965_down(struct iwl_priv *priv)
2913 {
2914 unsigned long flags;
2915 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2916
2917 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2918
2919 if (!exit_pending)
2920 set_bit(STATUS_EXIT_PENDING, &priv->status);
2921
2922 iwl_leds_unregister(priv);
2923
2924 iwlcore_low_level_notify(priv, IWLCORE_STOP_EVT);
2925
2926 iwlcore_clear_stations_table(priv);
2927
2928 /* Unblock any waiting calls */
2929 wake_up_interruptible_all(&priv->wait_command_queue);
2930
2931 /* Wipe out the EXIT_PENDING status bit if we are not actually
2932 * exiting the module */
2933 if (!exit_pending)
2934 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2935
2936 /* stop and reset the on-board processor */
2937 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2938
2939 /* tell the device to stop sending interrupts */
2940 spin_lock_irqsave(&priv->lock, flags);
2941 iwl4965_disable_interrupts(priv);
2942 spin_unlock_irqrestore(&priv->lock, flags);
2943 iwl_synchronize_irq(priv);
2944
2945 if (priv->mac80211_registered)
2946 ieee80211_stop_queues(priv->hw);
2947
2948 /* If we have not previously called iwl4965_init() then
2949 * clear all bits but the RF Kill and SUSPEND bits and return */
2950 if (!iwl_is_init(priv)) {
2951 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2952 STATUS_RF_KILL_HW |
2953 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2954 STATUS_RF_KILL_SW |
2955 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2956 STATUS_GEO_CONFIGURED |
2957 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2958 STATUS_IN_SUSPEND;
2959 goto exit;
2960 }
2961
2962 /* ...otherwise clear out all the status bits but the RF Kill and
2963 * SUSPEND bits and continue taking the NIC down. */
2964 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2965 STATUS_RF_KILL_HW |
2966 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2967 STATUS_RF_KILL_SW |
2968 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2969 STATUS_GEO_CONFIGURED |
2970 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2971 STATUS_IN_SUSPEND |
2972 test_bit(STATUS_FW_ERROR, &priv->status) <<
2973 STATUS_FW_ERROR;
2974
2975 spin_lock_irqsave(&priv->lock, flags);
2976 iwl_clear_bit(priv, CSR_GP_CNTRL,
2977 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2978 spin_unlock_irqrestore(&priv->lock, flags);
2979
2980 iwl_txq_ctx_stop(priv);
2981 iwl_rxq_stop(priv);
2982
2983 spin_lock_irqsave(&priv->lock, flags);
2984 if (!iwl_grab_nic_access(priv)) {
2985 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2986 APMG_CLK_VAL_DMA_CLK_RQT);
2987 iwl_release_nic_access(priv);
2988 }
2989 spin_unlock_irqrestore(&priv->lock, flags);
2990
2991 udelay(5);
2992
2993 /* FIXME: apm_ops.suspend(priv) */
2994 priv->cfg->ops->lib->apm_ops.reset(priv);
2995 priv->cfg->ops->lib->free_shared_mem(priv);
2996
2997 exit:
2998 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2999
3000 if (priv->ibss_beacon)
3001 dev_kfree_skb(priv->ibss_beacon);
3002 priv->ibss_beacon = NULL;
3003
3004 /* clear out any free frames */
3005 iwl_clear_free_frames(priv);
3006 }
3007
3008 static void iwl4965_down(struct iwl_priv *priv)
3009 {
3010 mutex_lock(&priv->mutex);
3011 __iwl4965_down(priv);
3012 mutex_unlock(&priv->mutex);
3013
3014 iwl_cancel_deferred_work(priv);
3015 }
3016
3017 #define MAX_HW_RESTARTS 5
3018
3019 static int __iwl4965_up(struct iwl_priv *priv)
3020 {
3021 int i;
3022 int ret;
3023
3024 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3025 IWL_WARNING("Exit pending; will not bring the NIC up\n");
3026 return -EIO;
3027 }
3028
3029 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
3030 IWL_WARNING("Radio disabled by SW RF kill (module "
3031 "parameter)\n");
3032 iwl_rfkill_set_hw_state(priv);
3033 return -ENODEV;
3034 }
3035
3036 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
3037 IWL_ERROR("ucode not available for device bringup\n");
3038 return -EIO;
3039 }
3040
3041 /* If platform's RF_KILL switch is NOT set to KILL */
3042 if (iwl_read32(priv, CSR_GP_CNTRL) &
3043 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3044 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3045 else {
3046 set_bit(STATUS_RF_KILL_HW, &priv->status);
3047 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
3048 iwl_rfkill_set_hw_state(priv);
3049 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
3050 return -ENODEV;
3051 }
3052 }
3053
3054 iwl_rfkill_set_hw_state(priv);
3055 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3056
3057 ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
3058 if (ret) {
3059 IWL_ERROR("Unable to allocate shared memory\n");
3060 return ret;
3061 }
3062
3063 ret = iwl_hw_nic_init(priv);
3064 if (ret) {
3065 IWL_ERROR("Unable to init nic\n");
3066 return ret;
3067 }
3068
3069 /* make sure rfkill handshake bits are cleared */
3070 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3071 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3072 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3073
3074 /* clear (again), then enable host interrupts */
3075 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3076 iwl4965_enable_interrupts(priv);
3077
3078 /* really make sure rfkill handshake bits are cleared */
3079 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3080 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3081
3082 /* Copy original ucode data image from disk into backup cache.
3083 * This will be used to initialize the on-board processor's
3084 * data SRAM for a clean start when the runtime program first loads. */
3085 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
3086 priv->ucode_data.len);
3087
3088 /* We return success when we resume from suspend and rf_kill is on. */
3089 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
3090 return 0;
3091
3092 for (i = 0; i < MAX_HW_RESTARTS; i++) {
3093
3094 iwlcore_clear_stations_table(priv);
3095
3096 /* load bootstrap state machine,
3097 * load bootstrap program into processor's memory,
3098 * prepare to load the "initialize" uCode */
3099 ret = priv->cfg->ops->lib->load_ucode(priv);
3100
3101 if (ret) {
3102 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
3103 continue;
3104 }
3105
3106 /* start card; "initialize" will load runtime ucode */
3107 iwl4965_nic_start(priv);
3108
3109 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
3110
3111 return 0;
3112 }
3113
3114 set_bit(STATUS_EXIT_PENDING, &priv->status);
3115 __iwl4965_down(priv);
3116
3117 /* tried to restart and config the device for as long as our
3118 * patience could withstand */
3119 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
3120 return -EIO;
3121 }
3122
3123
3124 /*****************************************************************************
3125 *
3126 * Workqueue callbacks
3127 *
3128 *****************************************************************************/
3129
3130 static void iwl_bg_init_alive_start(struct work_struct *data)
3131 {
3132 struct iwl_priv *priv =
3133 container_of(data, struct iwl_priv, init_alive_start.work);
3134
3135 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3136 return;
3137
3138 mutex_lock(&priv->mutex);
3139 priv->cfg->ops->lib->init_alive_start(priv);
3140 mutex_unlock(&priv->mutex);
3141 }
3142
3143 static void iwl_bg_alive_start(struct work_struct *data)
3144 {
3145 struct iwl_priv *priv =
3146 container_of(data, struct iwl_priv, alive_start.work);
3147
3148 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3149 return;
3150
3151 mutex_lock(&priv->mutex);
3152 iwl_alive_start(priv);
3153 mutex_unlock(&priv->mutex);
3154 }
3155
3156 static void iwl4965_bg_rf_kill(struct work_struct *work)
3157 {
3158 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
3159
3160 wake_up_interruptible(&priv->wait_command_queue);
3161
3162 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3163 return;
3164
3165 mutex_lock(&priv->mutex);
3166
3167 if (!iwl_is_rfkill(priv)) {
3168 IWL_DEBUG(IWL_DL_RF_KILL,
3169 "HW and/or SW RF Kill no longer active, restarting "
3170 "device\n");
3171 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
3172 queue_work(priv->workqueue, &priv->restart);
3173 } else {
3174 /* make sure mac80211 stop sending Tx frame */
3175 if (priv->mac80211_registered)
3176 ieee80211_stop_queues(priv->hw);
3177
3178 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
3179 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3180 "disabled by SW switch\n");
3181 else
3182 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
3183 "Kill switch must be turned off for "
3184 "wireless networking to work.\n");
3185 }
3186 iwl_rfkill_set_hw_state(priv);
3187
3188 mutex_unlock(&priv->mutex);
3189 }
3190
3191 static void iwl4965_bg_set_monitor(struct work_struct *work)
3192 {
3193 struct iwl_priv *priv = container_of(work,
3194 struct iwl_priv, set_monitor);
3195
3196 IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
3197
3198 mutex_lock(&priv->mutex);
3199
3200 if (!iwl_is_ready(priv))
3201 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
3202 else
3203 if (iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR) != 0)
3204 IWL_ERROR("iwl4965_set_mode() failed\n");
3205
3206 mutex_unlock(&priv->mutex);
3207 }
3208
3209 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
3210
3211 static void iwl4965_bg_scan_check(struct work_struct *data)
3212 {
3213 struct iwl_priv *priv =
3214 container_of(data, struct iwl_priv, scan_check.work);
3215
3216 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3217 return;
3218
3219 mutex_lock(&priv->mutex);
3220 if (test_bit(STATUS_SCANNING, &priv->status) ||
3221 test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3222 IWL_DEBUG(IWL_DL_SCAN, "Scan completion watchdog resetting "
3223 "adapter (%dms)\n",
3224 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
3225
3226 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
3227 iwl4965_send_scan_abort(priv);
3228 }
3229 mutex_unlock(&priv->mutex);
3230 }
3231
3232 static void iwl4965_bg_request_scan(struct work_struct *data)
3233 {
3234 struct iwl_priv *priv =
3235 container_of(data, struct iwl_priv, request_scan);
3236 struct iwl_host_cmd cmd = {
3237 .id = REPLY_SCAN_CMD,
3238 .len = sizeof(struct iwl4965_scan_cmd),
3239 .meta.flags = CMD_SIZE_HUGE,
3240 };
3241 struct iwl4965_scan_cmd *scan;
3242 struct ieee80211_conf *conf = NULL;
3243 u16 cmd_len;
3244 enum ieee80211_band band;
3245 u8 direct_mask;
3246 int ret = 0;
3247
3248 conf = ieee80211_get_hw_conf(priv->hw);
3249
3250 mutex_lock(&priv->mutex);
3251
3252 if (!iwl_is_ready(priv)) {
3253 IWL_WARNING("request scan called when driver not ready.\n");
3254 goto done;
3255 }
3256
3257 /* Make sure the scan wasn't cancelled before this queued work
3258 * was given the chance to run... */
3259 if (!test_bit(STATUS_SCANNING, &priv->status))
3260 goto done;
3261
3262 /* This should never be called or scheduled if there is currently
3263 * a scan active in the hardware. */
3264 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
3265 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
3266 "Ignoring second request.\n");
3267 ret = -EIO;
3268 goto done;
3269 }
3270
3271 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3272 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
3273 goto done;
3274 }
3275
3276 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3277 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
3278 goto done;
3279 }
3280
3281 if (iwl_is_rfkill(priv)) {
3282 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
3283 goto done;
3284 }
3285
3286 if (!test_bit(STATUS_READY, &priv->status)) {
3287 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
3288 goto done;
3289 }
3290
3291 if (!priv->scan_bands) {
3292 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
3293 goto done;
3294 }
3295
3296 if (!priv->scan) {
3297 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
3298 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
3299 if (!priv->scan) {
3300 ret = -ENOMEM;
3301 goto done;
3302 }
3303 }
3304 scan = priv->scan;
3305 memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
3306
3307 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
3308 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
3309
3310 if (iwl_is_associated(priv)) {
3311 u16 interval = 0;
3312 u32 extra;
3313 u32 suspend_time = 100;
3314 u32 scan_suspend_time = 100;
3315 unsigned long flags;
3316
3317 IWL_DEBUG_INFO("Scanning while associated...\n");
3318
3319 spin_lock_irqsave(&priv->lock, flags);
3320 interval = priv->beacon_int;
3321 spin_unlock_irqrestore(&priv->lock, flags);
3322
3323 scan->suspend_time = 0;
3324 scan->max_out_time = cpu_to_le32(200 * 1024);
3325 if (!interval)
3326 interval = suspend_time;
3327
3328 extra = (suspend_time / interval) << 22;
3329 scan_suspend_time = (extra |
3330 ((suspend_time % interval) * 1024));
3331 scan->suspend_time = cpu_to_le32(scan_suspend_time);
3332 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
3333 scan_suspend_time, interval);
3334 }
3335
3336 /* We should add the ability for user to lock to PASSIVE ONLY */
3337 if (priv->one_direct_scan) {
3338 IWL_DEBUG_SCAN
3339 ("Kicking off one direct scan for '%s'\n",
3340 iwl4965_escape_essid(priv->direct_ssid,
3341 priv->direct_ssid_len));
3342 scan->direct_scan[0].id = WLAN_EID_SSID;
3343 scan->direct_scan[0].len = priv->direct_ssid_len;
3344 memcpy(scan->direct_scan[0].ssid,
3345 priv->direct_ssid, priv->direct_ssid_len);
3346 direct_mask = 1;
3347 } else if (!iwl_is_associated(priv) && priv->essid_len) {
3348 IWL_DEBUG_SCAN
3349 ("Kicking off one direct scan for '%s' when not associated\n",
3350 iwl4965_escape_essid(priv->essid, priv->essid_len));
3351 scan->direct_scan[0].id = WLAN_EID_SSID;
3352 scan->direct_scan[0].len = priv->essid_len;
3353 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
3354 direct_mask = 1;
3355 } else {
3356 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
3357 direct_mask = 0;
3358 }
3359
3360 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
3361 scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
3362 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
3363
3364
3365 switch (priv->scan_bands) {
3366 case 2:
3367 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
3368 scan->tx_cmd.rate_n_flags =
3369 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
3370 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
3371
3372 scan->good_CRC_th = 0;
3373 band = IEEE80211_BAND_2GHZ;
3374 break;
3375
3376 case 1:
3377 scan->tx_cmd.rate_n_flags =
3378 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
3379 RATE_MCS_ANT_B_MSK);
3380 scan->good_CRC_th = IWL_GOOD_CRC_TH;
3381 band = IEEE80211_BAND_5GHZ;
3382 break;
3383
3384 default:
3385 IWL_WARNING("Invalid scan band count\n");
3386 goto done;
3387 }
3388
3389 /* We don't build a direct scan probe request; the uCode will do
3390 * that based on the direct_mask added to each channel entry */
3391 cmd_len = iwl4965_fill_probe_req(priv, band,
3392 (struct ieee80211_mgmt *)scan->data,
3393 IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
3394
3395 scan->tx_cmd.len = cpu_to_le16(cmd_len);
3396 /* select Rx chains */
3397
3398 /* Force use of chains B and C (0x6) for scan Rx.
3399 * Avoid A (0x1) because of its off-channel reception on A-band.
3400 * MIMO is not used here, but value is required to make uCode happy. */
3401 scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
3402 cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
3403 (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
3404 (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
3405
3406 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
3407 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
3408
3409 if (direct_mask)
3410 scan->channel_count =
3411 iwl4965_get_channels_for_scan(
3412 priv, band, 1, /* active */
3413 direct_mask,
3414 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
3415 else
3416 scan->channel_count =
3417 iwl4965_get_channels_for_scan(
3418 priv, band, 0, /* passive */
3419 direct_mask,
3420 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
3421
3422 scan->filter_flags |= (RXON_FILTER_ACCEPT_GRP_MSK |
3423 RXON_FILTER_BCON_AWARE_MSK);
3424 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
3425 scan->channel_count * sizeof(struct iwl4965_scan_channel);
3426 cmd.data = scan;
3427 scan->len = cpu_to_le16(cmd.len);
3428
3429 set_bit(STATUS_SCAN_HW, &priv->status);
3430 ret = iwl_send_cmd_sync(priv, &cmd);
3431 if (ret)
3432 goto done;
3433
3434 queue_delayed_work(priv->workqueue, &priv->scan_check,
3435 IWL_SCAN_CHECK_WATCHDOG);
3436
3437 mutex_unlock(&priv->mutex);
3438 return;
3439
3440 done:
3441 /* inform mac80211 scan aborted */
3442 queue_work(priv->workqueue, &priv->scan_completed);
3443 mutex_unlock(&priv->mutex);
3444 }
3445
3446 static void iwl_bg_run_time_calib_work(struct work_struct *work)
3447 {
3448 struct iwl_priv *priv = container_of(work, struct iwl_priv,
3449 run_time_calib_work);
3450
3451 mutex_lock(&priv->mutex);
3452
3453 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
3454 test_bit(STATUS_SCANNING, &priv->status)) {
3455 mutex_unlock(&priv->mutex);
3456 return;
3457 }
3458
3459 if (priv->start_calib) {
3460 iwl_chain_noise_calibration(priv, &priv->statistics);
3461
3462 iwl_sensitivity_calibration(priv, &priv->statistics);
3463 }
3464
3465 mutex_unlock(&priv->mutex);
3466 return;
3467 }
3468
3469 static void iwl4965_bg_up(struct work_struct *data)
3470 {
3471 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
3472
3473 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3474 return;
3475
3476 mutex_lock(&priv->mutex);
3477 __iwl4965_up(priv);
3478 mutex_unlock(&priv->mutex);
3479 }
3480
3481 static void iwl4965_bg_restart(struct work_struct *data)
3482 {
3483 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
3484
3485 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3486 return;
3487
3488 iwl4965_down(priv);
3489 queue_work(priv->workqueue, &priv->up);
3490 }
3491
3492 static void iwl4965_bg_rx_replenish(struct work_struct *data)
3493 {
3494 struct iwl_priv *priv =
3495 container_of(data, struct iwl_priv, rx_replenish);
3496
3497 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3498 return;
3499
3500 mutex_lock(&priv->mutex);
3501 iwl_rx_replenish(priv);
3502 mutex_unlock(&priv->mutex);
3503 }
3504
3505 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3506
3507 static void iwl4965_post_associate(struct iwl_priv *priv)
3508 {
3509 struct ieee80211_conf *conf = NULL;
3510 int ret = 0;
3511 DECLARE_MAC_BUF(mac);
3512
3513 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
3514 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
3515 return;
3516 }
3517
3518 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
3519 priv->assoc_id,
3520 print_mac(mac, priv->active_rxon.bssid_addr));
3521
3522
3523 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3524 return;
3525
3526
3527 if (!priv->vif || !priv->is_open)
3528 return;
3529
3530 iwl4965_scan_cancel_timeout(priv, 200);
3531
3532 conf = ieee80211_get_hw_conf(priv->hw);
3533
3534 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3535 iwl4965_commit_rxon(priv);
3536
3537 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
3538 iwl4965_setup_rxon_timing(priv);
3539 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3540 sizeof(priv->rxon_timing), &priv->rxon_timing);
3541 if (ret)
3542 IWL_WARNING("REPLY_RXON_TIMING failed - "
3543 "Attempting to continue.\n");
3544
3545 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3546
3547 if (priv->current_ht_config.is_ht)
3548 iwl_set_rxon_ht(priv, &priv->current_ht_config);
3549
3550 iwl_set_rxon_chain(priv);
3551 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3552
3553 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
3554 priv->assoc_id, priv->beacon_int);
3555
3556 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3557 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3558 else
3559 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3560
3561 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3562 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
3563 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3564 else
3565 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3566
3567 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
3568 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3569
3570 }
3571
3572 iwl4965_commit_rxon(priv);
3573
3574 switch (priv->iw_mode) {
3575 case IEEE80211_IF_TYPE_STA:
3576 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
3577 break;
3578
3579 case IEEE80211_IF_TYPE_IBSS:
3580
3581 /* clear out the station table */
3582 iwlcore_clear_stations_table(priv);
3583
3584 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
3585 iwl_rxon_add_station(priv, priv->bssid, 0);
3586 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
3587 iwl4965_send_beacon_cmd(priv);
3588
3589 break;
3590
3591 default:
3592 IWL_ERROR("%s Should not be called in %d mode\n",
3593 __FUNCTION__, priv->iw_mode);
3594 break;
3595 }
3596
3597 iwl4965_sequence_reset(priv);
3598
3599 /* Enable Rx differential gain and sensitivity calibrations */
3600 iwl_chain_noise_reset(priv);
3601 priv->start_calib = 1;
3602
3603 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
3604 priv->assoc_station_added = 1;
3605
3606 iwl4965_activate_qos(priv, 0);
3607
3608 iwl_power_update_mode(priv, 0);
3609 /* we have just associated, don't start scan too early */
3610 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
3611 }
3612
3613
3614 static void iwl4965_bg_post_associate(struct work_struct *data)
3615 {
3616 struct iwl_priv *priv = container_of(data, struct iwl_priv,
3617 post_associate.work);
3618
3619 mutex_lock(&priv->mutex);
3620 iwl4965_post_associate(priv);
3621 mutex_unlock(&priv->mutex);
3622
3623 }
3624
3625 static void iwl4965_bg_abort_scan(struct work_struct *work)
3626 {
3627 struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
3628
3629 if (!iwl_is_ready(priv))
3630 return;
3631
3632 mutex_lock(&priv->mutex);
3633
3634 set_bit(STATUS_SCAN_ABORTING, &priv->status);
3635 iwl4965_send_scan_abort(priv);
3636
3637 mutex_unlock(&priv->mutex);
3638 }
3639
3640 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
3641
3642 static void iwl4965_bg_scan_completed(struct work_struct *work)
3643 {
3644 struct iwl_priv *priv =
3645 container_of(work, struct iwl_priv, scan_completed);
3646
3647 IWL_DEBUG(IWL_DL_SCAN, "SCAN complete scan\n");
3648
3649 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3650 return;
3651
3652 if (test_bit(STATUS_CONF_PENDING, &priv->status))
3653 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
3654
3655 ieee80211_scan_completed(priv->hw);
3656
3657 /* Since setting the TXPOWER may have been deferred while
3658 * performing the scan, fire one off */
3659 mutex_lock(&priv->mutex);
3660 iwl4965_hw_reg_send_txpower(priv);
3661 mutex_unlock(&priv->mutex);
3662 }
3663
3664 /*****************************************************************************
3665 *
3666 * mac80211 entry point functions
3667 *
3668 *****************************************************************************/
3669
3670 #define UCODE_READY_TIMEOUT (2 * HZ)
3671
3672 static int iwl4965_mac_start(struct ieee80211_hw *hw)
3673 {
3674 struct iwl_priv *priv = hw->priv;
3675 int ret;
3676
3677 IWL_DEBUG_MAC80211("enter\n");
3678
3679 if (pci_enable_device(priv->pci_dev)) {
3680 IWL_ERROR("Fail to pci_enable_device\n");
3681 return -ENODEV;
3682 }
3683 pci_restore_state(priv->pci_dev);
3684 pci_enable_msi(priv->pci_dev);
3685
3686 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
3687 DRV_NAME, priv);
3688 if (ret) {
3689 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
3690 goto out_disable_msi;
3691 }
3692
3693 /* we should be verifying the device is ready to be opened */
3694 mutex_lock(&priv->mutex);
3695
3696 memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
3697 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3698 * ucode filename and max sizes are card-specific. */
3699
3700 if (!priv->ucode_code.len) {
3701 ret = iwl4965_read_ucode(priv);
3702 if (ret) {
3703 IWL_ERROR("Could not read microcode: %d\n", ret);
3704 mutex_unlock(&priv->mutex);
3705 goto out_release_irq;
3706 }
3707 }
3708
3709 ret = __iwl4965_up(priv);
3710
3711 mutex_unlock(&priv->mutex);
3712
3713 if (ret)
3714 goto out_release_irq;
3715
3716 IWL_DEBUG_INFO("Start UP work done.\n");
3717
3718 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
3719 return 0;
3720
3721 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
3722 * mac80211 will not be run successfully. */
3723 if (priv->ucode_type == UCODE_RT) {
3724 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3725 test_bit(STATUS_READY, &priv->status),
3726 UCODE_READY_TIMEOUT);
3727 if (!ret) {
3728 if (!test_bit(STATUS_READY, &priv->status)) {
3729 IWL_ERROR("START_ALIVE timeout after %dms.\n",
3730 jiffies_to_msecs(UCODE_READY_TIMEOUT));
3731 ret = -ETIMEDOUT;
3732 goto out_release_irq;
3733 }
3734 }
3735
3736 priv->is_open = 1;
3737 }
3738 IWL_DEBUG_MAC80211("leave\n");
3739 return 0;
3740
3741 out_release_irq:
3742 free_irq(priv->pci_dev->irq, priv);
3743 out_disable_msi:
3744 pci_disable_msi(priv->pci_dev);
3745 pci_disable_device(priv->pci_dev);
3746 priv->is_open = 0;
3747 IWL_DEBUG_MAC80211("leave - failed\n");
3748 return ret;
3749 }
3750
3751 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
3752 {
3753 struct iwl_priv *priv = hw->priv;
3754
3755 IWL_DEBUG_MAC80211("enter\n");
3756
3757 if (!priv->is_open) {
3758 IWL_DEBUG_MAC80211("leave - skip\n");
3759 return;
3760 }
3761
3762 priv->is_open = 0;
3763
3764 if (iwl_is_ready_rf(priv)) {
3765 /* stop mac, cancel any scan request and clear
3766 * RXON_FILTER_ASSOC_MSK BIT
3767 */
3768 mutex_lock(&priv->mutex);
3769 iwl4965_scan_cancel_timeout(priv, 100);
3770 cancel_delayed_work(&priv->post_associate);
3771 mutex_unlock(&priv->mutex);
3772 }
3773
3774 iwl4965_down(priv);
3775
3776 flush_workqueue(priv->workqueue);
3777 free_irq(priv->pci_dev->irq, priv);
3778 pci_disable_msi(priv->pci_dev);
3779 pci_save_state(priv->pci_dev);
3780 pci_disable_device(priv->pci_dev);
3781
3782 IWL_DEBUG_MAC80211("leave\n");
3783 }
3784
3785 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3786 {
3787 struct iwl_priv *priv = hw->priv;
3788
3789 IWL_DEBUG_MAC80211("enter\n");
3790
3791 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
3792 IWL_DEBUG_MAC80211("leave - monitor\n");
3793 return -1;
3794 }
3795
3796 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3797 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3798
3799 if (iwl_tx_skb(priv, skb))
3800 dev_kfree_skb_any(skb);
3801
3802 IWL_DEBUG_MAC80211("leave\n");
3803 return 0;
3804 }
3805
3806 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
3807 struct ieee80211_if_init_conf *conf)
3808 {
3809 struct iwl_priv *priv = hw->priv;
3810 unsigned long flags;
3811 DECLARE_MAC_BUF(mac);
3812
3813 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
3814
3815 if (priv->vif) {
3816 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
3817 return -EOPNOTSUPP;
3818 }
3819
3820 spin_lock_irqsave(&priv->lock, flags);
3821 priv->vif = conf->vif;
3822
3823 spin_unlock_irqrestore(&priv->lock, flags);
3824
3825 mutex_lock(&priv->mutex);
3826
3827 if (conf->mac_addr) {
3828 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
3829 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
3830 }
3831
3832 if (iwl_is_ready(priv))
3833 iwl4965_set_mode(priv, conf->type);
3834
3835 mutex_unlock(&priv->mutex);
3836
3837 IWL_DEBUG_MAC80211("leave\n");
3838 return 0;
3839 }
3840
3841 /**
3842 * iwl4965_mac_config - mac80211 config callback
3843 *
3844 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
3845 * be set inappropriately and the driver currently sets the hardware up to
3846 * use it whenever needed.
3847 */
3848 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
3849 {
3850 struct iwl_priv *priv = hw->priv;
3851 const struct iwl_channel_info *ch_info;
3852 unsigned long flags;
3853 int ret = 0;
3854 u16 channel;
3855
3856 mutex_lock(&priv->mutex);
3857 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
3858
3859 priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
3860
3861 if (!iwl_is_ready(priv)) {
3862 IWL_DEBUG_MAC80211("leave - not ready\n");
3863 ret = -EIO;
3864 goto out;
3865 }
3866
3867 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
3868 test_bit(STATUS_SCANNING, &priv->status))) {
3869 IWL_DEBUG_MAC80211("leave - scanning\n");
3870 set_bit(STATUS_CONF_PENDING, &priv->status);
3871 mutex_unlock(&priv->mutex);
3872 return 0;
3873 }
3874
3875 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
3876 ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
3877 if (!is_channel_valid(ch_info)) {
3878 IWL_DEBUG_MAC80211("leave - invalid channel\n");
3879 ret = -EINVAL;
3880 goto out;
3881 }
3882
3883 spin_lock_irqsave(&priv->lock, flags);
3884
3885 /* if we are switching from ht to 2.4 clear flags
3886 * from any ht related info since 2.4 does not
3887 * support ht */
3888 if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
3889 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
3890 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
3891 #endif
3892 )
3893 priv->staging_rxon.flags = 0;
3894
3895 iwl_set_rxon_channel(priv, conf->channel->band, channel);
3896
3897 iwl_set_flags_for_band(priv, conf->channel->band);
3898
3899 /* The list of supported rates and rate mask can be different
3900 * for each band; since the band may have changed, reset
3901 * the rate mask to what mac80211 lists */
3902 iwl4965_set_rate(priv);
3903
3904 spin_unlock_irqrestore(&priv->lock, flags);
3905
3906 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
3907 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
3908 iwl4965_hw_channel_switch(priv, conf->channel);
3909 goto out;
3910 }
3911 #endif
3912
3913 if (priv->cfg->ops->lib->radio_kill_sw)
3914 priv->cfg->ops->lib->radio_kill_sw(priv, !conf->radio_enabled);
3915
3916 if (!conf->radio_enabled) {
3917 IWL_DEBUG_MAC80211("leave - radio disabled\n");
3918 goto out;
3919 }
3920
3921 if (iwl_is_rfkill(priv)) {
3922 IWL_DEBUG_MAC80211("leave - RF kill\n");
3923 ret = -EIO;
3924 goto out;
3925 }
3926
3927 iwl4965_set_rate(priv);
3928
3929 if (memcmp(&priv->active_rxon,
3930 &priv->staging_rxon, sizeof(priv->staging_rxon)))
3931 iwl4965_commit_rxon(priv);
3932 else
3933 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
3934
3935 IWL_DEBUG_MAC80211("leave\n");
3936
3937 out:
3938 clear_bit(STATUS_CONF_PENDING, &priv->status);
3939 mutex_unlock(&priv->mutex);
3940 return ret;
3941 }
3942
3943 static void iwl4965_config_ap(struct iwl_priv *priv)
3944 {
3945 int ret = 0;
3946
3947 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3948 return;
3949
3950 /* The following should be done only at AP bring up */
3951 if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
3952
3953 /* RXON - unassoc (to set timing command) */
3954 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3955 iwl4965_commit_rxon(priv);
3956
3957 /* RXON Timing */
3958 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
3959 iwl4965_setup_rxon_timing(priv);
3960 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3961 sizeof(priv->rxon_timing), &priv->rxon_timing);
3962 if (ret)
3963 IWL_WARNING("REPLY_RXON_TIMING failed - "
3964 "Attempting to continue.\n");
3965
3966 iwl_set_rxon_chain(priv);
3967
3968 /* FIXME: what should be the assoc_id for AP? */
3969 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3970 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3971 priv->staging_rxon.flags |=
3972 RXON_FLG_SHORT_PREAMBLE_MSK;
3973 else
3974 priv->staging_rxon.flags &=
3975 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3976
3977 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3978 if (priv->assoc_capability &
3979 WLAN_CAPABILITY_SHORT_SLOT_TIME)
3980 priv->staging_rxon.flags |=
3981 RXON_FLG_SHORT_SLOT_MSK;
3982 else
3983 priv->staging_rxon.flags &=
3984 ~RXON_FLG_SHORT_SLOT_MSK;
3985
3986 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
3987 priv->staging_rxon.flags &=
3988 ~RXON_FLG_SHORT_SLOT_MSK;
3989 }
3990 /* restore RXON assoc */
3991 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3992 iwl4965_commit_rxon(priv);
3993 iwl4965_activate_qos(priv, 1);
3994 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
3995 }
3996 iwl4965_send_beacon_cmd(priv);
3997
3998 /* FIXME - we need to add code here to detect a totally new
3999 * configuration, reset the AP, unassoc, rxon timing, assoc,
4000 * clear sta table, add BCAST sta... */
4001 }
4002
4003 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
4004 struct ieee80211_vif *vif,
4005 struct ieee80211_if_conf *conf)
4006 {
4007 struct iwl_priv *priv = hw->priv;
4008 DECLARE_MAC_BUF(mac);
4009 unsigned long flags;
4010 int rc;
4011
4012 if (conf == NULL)
4013 return -EIO;
4014
4015 if (priv->vif != vif) {
4016 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
4017 return 0;
4018 }
4019
4020 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
4021 (!conf->beacon || !conf->ssid_len)) {
4022 IWL_DEBUG_MAC80211
4023 ("Leaving in AP mode because HostAPD is not ready.\n");
4024 return 0;
4025 }
4026
4027 if (!iwl_is_alive(priv))
4028 return -EAGAIN;
4029
4030 mutex_lock(&priv->mutex);
4031
4032 if (conf->bssid)
4033 IWL_DEBUG_MAC80211("bssid: %s\n",
4034 print_mac(mac, conf->bssid));
4035
4036 /*
4037 * very dubious code was here; the probe filtering flag is never set:
4038 *
4039 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
4040 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
4041 */
4042
4043 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
4044 if (!conf->bssid) {
4045 conf->bssid = priv->mac_addr;
4046 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
4047 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
4048 print_mac(mac, conf->bssid));
4049 }
4050 if (priv->ibss_beacon)
4051 dev_kfree_skb(priv->ibss_beacon);
4052
4053 priv->ibss_beacon = conf->beacon;
4054 }
4055
4056 if (iwl_is_rfkill(priv))
4057 goto done;
4058
4059 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
4060 !is_multicast_ether_addr(conf->bssid)) {
4061 /* If there is currently a HW scan going on in the background
4062 * then we need to cancel it else the RXON below will fail. */
4063 if (iwl4965_scan_cancel_timeout(priv, 100)) {
4064 IWL_WARNING("Aborted scan still in progress "
4065 "after 100ms\n");
4066 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
4067 mutex_unlock(&priv->mutex);
4068 return -EAGAIN;
4069 }
4070 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
4071
4072 /* TODO: Audit driver for usage of these members and see
4073 * if mac80211 deprecates them (priv->bssid looks like it
4074 * shouldn't be there, but I haven't scanned the IBSS code
4075 * to verify) - jpk */
4076 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
4077
4078 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
4079 iwl4965_config_ap(priv);
4080 else {
4081 rc = iwl4965_commit_rxon(priv);
4082 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
4083 iwl_rxon_add_station(
4084 priv, priv->active_rxon.bssid_addr, 1);
4085 }
4086
4087 } else {
4088 iwl4965_scan_cancel_timeout(priv, 100);
4089 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4090 iwl4965_commit_rxon(priv);
4091 }
4092
4093 done:
4094 spin_lock_irqsave(&priv->lock, flags);
4095 if (!conf->ssid_len)
4096 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
4097 else
4098 memcpy(priv->essid, conf->ssid, conf->ssid_len);
4099
4100 priv->essid_len = conf->ssid_len;
4101 spin_unlock_irqrestore(&priv->lock, flags);
4102
4103 IWL_DEBUG_MAC80211("leave\n");
4104 mutex_unlock(&priv->mutex);
4105
4106 return 0;
4107 }
4108
4109 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
4110 unsigned int changed_flags,
4111 unsigned int *total_flags,
4112 int mc_count, struct dev_addr_list *mc_list)
4113 {
4114 /*
4115 * XXX: dummy
4116 * see also iwl4965_connection_init_rx_config
4117 */
4118 struct iwl_priv *priv = hw->priv;
4119 int new_flags = 0;
4120 if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
4121 if (*total_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
4122 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
4123 IEEE80211_IF_TYPE_MNTR,
4124 changed_flags, *total_flags);
4125 /* queue work 'cuz mac80211 is holding a lock which
4126 * prevents us from issuing (synchronous) f/w cmds */
4127 queue_work(priv->workqueue, &priv->set_monitor);
4128 new_flags &= FIF_PROMISC_IN_BSS |
4129 FIF_OTHER_BSS |
4130 FIF_ALLMULTI;
4131 }
4132 }
4133 *total_flags = new_flags;
4134 }
4135
4136 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
4137 struct ieee80211_if_init_conf *conf)
4138 {
4139 struct iwl_priv *priv = hw->priv;
4140
4141 IWL_DEBUG_MAC80211("enter\n");
4142
4143 mutex_lock(&priv->mutex);
4144
4145 if (iwl_is_ready_rf(priv)) {
4146 iwl4965_scan_cancel_timeout(priv, 100);
4147 cancel_delayed_work(&priv->post_associate);
4148 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4149 iwl4965_commit_rxon(priv);
4150 }
4151 if (priv->vif == conf->vif) {
4152 priv->vif = NULL;
4153 memset(priv->bssid, 0, ETH_ALEN);
4154 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
4155 priv->essid_len = 0;
4156 }
4157 mutex_unlock(&priv->mutex);
4158
4159 IWL_DEBUG_MAC80211("leave\n");
4160
4161 }
4162
4163 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
4164 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
4165 struct ieee80211_vif *vif,
4166 struct ieee80211_bss_conf *bss_conf,
4167 u32 changes)
4168 {
4169 struct iwl_priv *priv = hw->priv;
4170
4171 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
4172
4173 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
4174 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
4175 bss_conf->use_short_preamble);
4176 if (bss_conf->use_short_preamble)
4177 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
4178 else
4179 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
4180 }
4181
4182 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
4183 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
4184 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
4185 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
4186 else
4187 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
4188 }
4189
4190 if (changes & BSS_CHANGED_HT) {
4191 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
4192 iwl4965_ht_conf(priv, bss_conf);
4193 iwl_set_rxon_chain(priv);
4194 }
4195
4196 if (changes & BSS_CHANGED_ASSOC) {
4197 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
4198 /* This should never happen as this function should
4199 * never be called from interrupt context. */
4200 if (WARN_ON_ONCE(in_interrupt()))
4201 return;
4202 if (bss_conf->assoc) {
4203 priv->assoc_id = bss_conf->aid;
4204 priv->beacon_int = bss_conf->beacon_int;
4205 priv->timestamp = bss_conf->timestamp;
4206 priv->assoc_capability = bss_conf->assoc_capability;
4207 priv->next_scan_jiffies = jiffies +
4208 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
4209 mutex_lock(&priv->mutex);
4210 iwl4965_post_associate(priv);
4211 mutex_unlock(&priv->mutex);
4212 } else {
4213 priv->assoc_id = 0;
4214 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
4215 }
4216 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
4217 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
4218 iwl_send_rxon_assoc(priv);
4219 }
4220
4221 }
4222
4223 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
4224 {
4225 int rc = 0;
4226 unsigned long flags;
4227 struct iwl_priv *priv = hw->priv;
4228
4229 IWL_DEBUG_MAC80211("enter\n");
4230
4231 mutex_lock(&priv->mutex);
4232 spin_lock_irqsave(&priv->lock, flags);
4233
4234 if (!iwl_is_ready_rf(priv)) {
4235 rc = -EIO;
4236 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
4237 goto out_unlock;
4238 }
4239
4240 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
4241 rc = -EIO;
4242 IWL_ERROR("ERROR: APs don't scan\n");
4243 goto out_unlock;
4244 }
4245
4246 /* we don't schedule scan within next_scan_jiffies period */
4247 if (priv->next_scan_jiffies &&
4248 time_after(priv->next_scan_jiffies, jiffies)) {
4249 rc = -EAGAIN;
4250 goto out_unlock;
4251 }
4252 /* if we just finished scan ask for delay */
4253 if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
4254 IWL_DELAY_NEXT_SCAN, jiffies)) {
4255 rc = -EAGAIN;
4256 goto out_unlock;
4257 }
4258 if (len) {
4259 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
4260 iwl4965_escape_essid(ssid, len), (int)len);
4261
4262 priv->one_direct_scan = 1;
4263 priv->direct_ssid_len = (u8)
4264 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
4265 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
4266 } else
4267 priv->one_direct_scan = 0;
4268
4269 rc = iwl4965_scan_initiate(priv);
4270
4271 IWL_DEBUG_MAC80211("leave\n");
4272
4273 out_unlock:
4274 spin_unlock_irqrestore(&priv->lock, flags);
4275 mutex_unlock(&priv->mutex);
4276
4277 return rc;
4278 }
4279
4280 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
4281 struct ieee80211_key_conf *keyconf, const u8 *addr,
4282 u32 iv32, u16 *phase1key)
4283 {
4284 struct iwl_priv *priv = hw->priv;
4285 u8 sta_id = IWL_INVALID_STATION;
4286 unsigned long flags;
4287 __le16 key_flags = 0;
4288 int i;
4289 DECLARE_MAC_BUF(mac);
4290
4291 IWL_DEBUG_MAC80211("enter\n");
4292
4293 sta_id = iwl_find_station(priv, addr);
4294 if (sta_id == IWL_INVALID_STATION) {
4295 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
4296 print_mac(mac, addr));
4297 return;
4298 }
4299
4300 iwl4965_scan_cancel_timeout(priv, 100);
4301
4302 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
4303 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
4304 key_flags &= ~STA_KEY_FLG_INVALID;
4305
4306 if (sta_id == priv->hw_params.bcast_sta_id)
4307 key_flags |= STA_KEY_MULTICAST_MSK;
4308
4309 spin_lock_irqsave(&priv->sta_lock, flags);
4310
4311 priv->stations[sta_id].sta.key.key_flags = key_flags;
4312 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
4313
4314 for (i = 0; i < 5; i++)
4315 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
4316 cpu_to_le16(phase1key[i]);
4317
4318 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
4319 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
4320
4321 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
4322
4323 spin_unlock_irqrestore(&priv->sta_lock, flags);
4324
4325 IWL_DEBUG_MAC80211("leave\n");
4326 }
4327
4328 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
4329 const u8 *local_addr, const u8 *addr,
4330 struct ieee80211_key_conf *key)
4331 {
4332 struct iwl_priv *priv = hw->priv;
4333 DECLARE_MAC_BUF(mac);
4334 int ret = 0;
4335 u8 sta_id = IWL_INVALID_STATION;
4336 u8 is_default_wep_key = 0;
4337
4338 IWL_DEBUG_MAC80211("enter\n");
4339
4340 if (priv->hw_params.sw_crypto) {
4341 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
4342 return -EOPNOTSUPP;
4343 }
4344
4345 if (is_zero_ether_addr(addr))
4346 /* only support pairwise keys */
4347 return -EOPNOTSUPP;
4348
4349 sta_id = iwl_find_station(priv, addr);
4350 if (sta_id == IWL_INVALID_STATION) {
4351 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
4352 print_mac(mac, addr));
4353 return -EINVAL;
4354
4355 }
4356
4357 mutex_lock(&priv->mutex);
4358 iwl4965_scan_cancel_timeout(priv, 100);
4359 mutex_unlock(&priv->mutex);
4360
4361 /* If we are getting WEP group key and we didn't receive any key mapping
4362 * so far, we are in legacy wep mode (group key only), otherwise we are
4363 * in 1X mode.
4364 * In legacy wep mode, we use another host command to the uCode */
4365 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
4366 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
4367 if (cmd == SET_KEY)
4368 is_default_wep_key = !priv->key_mapping_key;
4369 else
4370 is_default_wep_key =
4371 (key->hw_key_idx == HW_KEY_DEFAULT);
4372 }
4373
4374 switch (cmd) {
4375 case SET_KEY:
4376 if (is_default_wep_key)
4377 ret = iwl_set_default_wep_key(priv, key);
4378 else
4379 ret = iwl_set_dynamic_key(priv, key, sta_id);
4380
4381 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
4382 break;
4383 case DISABLE_KEY:
4384 if (is_default_wep_key)
4385 ret = iwl_remove_default_wep_key(priv, key);
4386 else
4387 ret = iwl_remove_dynamic_key(priv, key, sta_id);
4388
4389 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
4390 break;
4391 default:
4392 ret = -EINVAL;
4393 }
4394
4395 IWL_DEBUG_MAC80211("leave\n");
4396
4397 return ret;
4398 }
4399
4400 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
4401 const struct ieee80211_tx_queue_params *params)
4402 {
4403 struct iwl_priv *priv = hw->priv;
4404 unsigned long flags;
4405 int q;
4406
4407 IWL_DEBUG_MAC80211("enter\n");
4408
4409 if (!iwl_is_ready_rf(priv)) {
4410 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4411 return -EIO;
4412 }
4413
4414 if (queue >= AC_NUM) {
4415 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
4416 return 0;
4417 }
4418
4419 if (!priv->qos_data.qos_enable) {
4420 priv->qos_data.qos_active = 0;
4421 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
4422 return 0;
4423 }
4424 q = AC_NUM - 1 - queue;
4425
4426 spin_lock_irqsave(&priv->lock, flags);
4427
4428 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
4429 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
4430 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
4431 priv->qos_data.def_qos_parm.ac[q].edca_txop =
4432 cpu_to_le16((params->txop * 32));
4433
4434 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
4435 priv->qos_data.qos_active = 1;
4436
4437 spin_unlock_irqrestore(&priv->lock, flags);
4438
4439 mutex_lock(&priv->mutex);
4440 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
4441 iwl4965_activate_qos(priv, 1);
4442 else if (priv->assoc_id && iwl_is_associated(priv))
4443 iwl4965_activate_qos(priv, 0);
4444
4445 mutex_unlock(&priv->mutex);
4446
4447 IWL_DEBUG_MAC80211("leave\n");
4448 return 0;
4449 }
4450
4451 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
4452 struct ieee80211_tx_queue_stats *stats)
4453 {
4454 struct iwl_priv *priv = hw->priv;
4455 int i, avail;
4456 struct iwl_tx_queue *txq;
4457 struct iwl_queue *q;
4458 unsigned long flags;
4459
4460 IWL_DEBUG_MAC80211("enter\n");
4461
4462 if (!iwl_is_ready_rf(priv)) {
4463 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4464 return -EIO;
4465 }
4466
4467 spin_lock_irqsave(&priv->lock, flags);
4468
4469 for (i = 0; i < AC_NUM; i++) {
4470 txq = &priv->txq[i];
4471 q = &txq->q;
4472 avail = iwl_queue_space(q);
4473
4474 stats[i].len = q->n_window - avail;
4475 stats[i].limit = q->n_window - q->high_mark;
4476 stats[i].count = q->n_window;
4477
4478 }
4479 spin_unlock_irqrestore(&priv->lock, flags);
4480
4481 IWL_DEBUG_MAC80211("leave\n");
4482
4483 return 0;
4484 }
4485
4486 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
4487 struct ieee80211_low_level_stats *stats)
4488 {
4489 struct iwl_priv *priv = hw->priv;
4490
4491 priv = hw->priv;
4492 IWL_DEBUG_MAC80211("enter\n");
4493 IWL_DEBUG_MAC80211("leave\n");
4494
4495 return 0;
4496 }
4497
4498 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
4499 {
4500 struct iwl_priv *priv;
4501
4502 priv = hw->priv;
4503 IWL_DEBUG_MAC80211("enter\n");
4504 IWL_DEBUG_MAC80211("leave\n");
4505
4506 return 0;
4507 }
4508
4509 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
4510 {
4511 struct iwl_priv *priv = hw->priv;
4512 unsigned long flags;
4513
4514 mutex_lock(&priv->mutex);
4515 IWL_DEBUG_MAC80211("enter\n");
4516
4517 priv->lq_mngr.lq_ready = 0;
4518 spin_lock_irqsave(&priv->lock, flags);
4519 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
4520 spin_unlock_irqrestore(&priv->lock, flags);
4521
4522 iwl_reset_qos(priv);
4523
4524 cancel_delayed_work(&priv->post_associate);
4525
4526 spin_lock_irqsave(&priv->lock, flags);
4527 priv->assoc_id = 0;
4528 priv->assoc_capability = 0;
4529 priv->assoc_station_added = 0;
4530
4531 /* new association get rid of ibss beacon skb */
4532 if (priv->ibss_beacon)
4533 dev_kfree_skb(priv->ibss_beacon);
4534
4535 priv->ibss_beacon = NULL;
4536
4537 priv->beacon_int = priv->hw->conf.beacon_int;
4538 priv->timestamp = 0;
4539 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
4540 priv->beacon_int = 0;
4541
4542 spin_unlock_irqrestore(&priv->lock, flags);
4543
4544 if (!iwl_is_ready_rf(priv)) {
4545 IWL_DEBUG_MAC80211("leave - not ready\n");
4546 mutex_unlock(&priv->mutex);
4547 return;
4548 }
4549
4550 /* we are restarting association process
4551 * clear RXON_FILTER_ASSOC_MSK bit
4552 */
4553 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
4554 iwl4965_scan_cancel_timeout(priv, 100);
4555 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4556 iwl4965_commit_rxon(priv);
4557 }
4558
4559 iwl_power_update_mode(priv, 0);
4560
4561 /* Per mac80211.h: This is only used in IBSS mode... */
4562 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
4563
4564 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
4565 mutex_unlock(&priv->mutex);
4566 return;
4567 }
4568
4569 iwl4965_set_rate(priv);
4570
4571 mutex_unlock(&priv->mutex);
4572
4573 IWL_DEBUG_MAC80211("leave\n");
4574 }
4575
4576 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
4577 {
4578 struct iwl_priv *priv = hw->priv;
4579 unsigned long flags;
4580
4581 mutex_lock(&priv->mutex);
4582 IWL_DEBUG_MAC80211("enter\n");
4583
4584 if (!iwl_is_ready_rf(priv)) {
4585 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4586 mutex_unlock(&priv->mutex);
4587 return -EIO;
4588 }
4589
4590 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
4591 IWL_DEBUG_MAC80211("leave - not IBSS\n");
4592 mutex_unlock(&priv->mutex);
4593 return -EIO;
4594 }
4595
4596 spin_lock_irqsave(&priv->lock, flags);
4597
4598 if (priv->ibss_beacon)
4599 dev_kfree_skb(priv->ibss_beacon);
4600
4601 priv->ibss_beacon = skb;
4602
4603 priv->assoc_id = 0;
4604
4605 IWL_DEBUG_MAC80211("leave\n");
4606 spin_unlock_irqrestore(&priv->lock, flags);
4607
4608 iwl_reset_qos(priv);
4609
4610 queue_work(priv->workqueue, &priv->post_associate.work);
4611
4612 mutex_unlock(&priv->mutex);
4613
4614 return 0;
4615 }
4616
4617 /*****************************************************************************
4618 *
4619 * sysfs attributes
4620 *
4621 *****************************************************************************/
4622
4623 #ifdef CONFIG_IWLWIFI_DEBUG
4624
4625 /*
4626 * The following adds a new attribute to the sysfs representation
4627 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
4628 * used for controlling the debug level.
4629 *
4630 * See the level definitions in iwl for details.
4631 */
4632
4633 static ssize_t show_debug_level(struct device *d,
4634 struct device_attribute *attr, char *buf)
4635 {
4636 struct iwl_priv *priv = d->driver_data;
4637
4638 return sprintf(buf, "0x%08X\n", priv->debug_level);
4639 }
4640 static ssize_t store_debug_level(struct device *d,
4641 struct device_attribute *attr,
4642 const char *buf, size_t count)
4643 {
4644 struct iwl_priv *priv = d->driver_data;
4645 char *p = (char *)buf;
4646 u32 val;
4647
4648 val = simple_strtoul(p, &p, 0);
4649 if (p == buf)
4650 printk(KERN_INFO DRV_NAME
4651 ": %s is not in hex or decimal form.\n", buf);
4652 else
4653 priv->debug_level = val;
4654
4655 return strnlen(buf, count);
4656 }
4657
4658 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
4659 show_debug_level, store_debug_level);
4660
4661
4662 #endif /* CONFIG_IWLWIFI_DEBUG */
4663
4664
4665 static ssize_t show_version(struct device *d,
4666 struct device_attribute *attr, char *buf)
4667 {
4668 struct iwl_priv *priv = d->driver_data;
4669 struct iwl_alive_resp *palive = &priv->card_alive;
4670
4671 if (palive->is_valid)
4672 return sprintf(buf, "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
4673 "fw type: 0x%01X 0x%01X\n",
4674 palive->ucode_major, palive->ucode_minor,
4675 palive->sw_rev[0], palive->sw_rev[1],
4676 palive->ver_type, palive->ver_subtype);
4677
4678 else
4679 return sprintf(buf, "fw not loaded\n");
4680 }
4681
4682 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
4683
4684 static ssize_t show_temperature(struct device *d,
4685 struct device_attribute *attr, char *buf)
4686 {
4687 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4688
4689 if (!iwl_is_alive(priv))
4690 return -EAGAIN;
4691
4692 return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
4693 }
4694
4695 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
4696
4697 static ssize_t show_rs_window(struct device *d,
4698 struct device_attribute *attr,
4699 char *buf)
4700 {
4701 struct iwl_priv *priv = d->driver_data;
4702 return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
4703 }
4704 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
4705
4706 static ssize_t show_tx_power(struct device *d,
4707 struct device_attribute *attr, char *buf)
4708 {
4709 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4710 return sprintf(buf, "%d\n", priv->user_txpower_limit);
4711 }
4712
4713 static ssize_t store_tx_power(struct device *d,
4714 struct device_attribute *attr,
4715 const char *buf, size_t count)
4716 {
4717 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4718 char *p = (char *)buf;
4719 u32 val;
4720
4721 val = simple_strtoul(p, &p, 10);
4722 if (p == buf)
4723 printk(KERN_INFO DRV_NAME
4724 ": %s is not in decimal form.\n", buf);
4725 else
4726 iwl4965_hw_reg_set_txpower(priv, val);
4727
4728 return count;
4729 }
4730
4731 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
4732
4733 static ssize_t show_flags(struct device *d,
4734 struct device_attribute *attr, char *buf)
4735 {
4736 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4737
4738 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
4739 }
4740
4741 static ssize_t store_flags(struct device *d,
4742 struct device_attribute *attr,
4743 const char *buf, size_t count)
4744 {
4745 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4746 u32 flags = simple_strtoul(buf, NULL, 0);
4747
4748 mutex_lock(&priv->mutex);
4749 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
4750 /* Cancel any currently running scans... */
4751 if (iwl4965_scan_cancel_timeout(priv, 100))
4752 IWL_WARNING("Could not cancel scan.\n");
4753 else {
4754 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
4755 flags);
4756 priv->staging_rxon.flags = cpu_to_le32(flags);
4757 iwl4965_commit_rxon(priv);
4758 }
4759 }
4760 mutex_unlock(&priv->mutex);
4761
4762 return count;
4763 }
4764
4765 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
4766
4767 static ssize_t show_filter_flags(struct device *d,
4768 struct device_attribute *attr, char *buf)
4769 {
4770 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4771
4772 return sprintf(buf, "0x%04X\n",
4773 le32_to_cpu(priv->active_rxon.filter_flags));
4774 }
4775
4776 static ssize_t store_filter_flags(struct device *d,
4777 struct device_attribute *attr,
4778 const char *buf, size_t count)
4779 {
4780 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4781 u32 filter_flags = simple_strtoul(buf, NULL, 0);
4782
4783 mutex_lock(&priv->mutex);
4784 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
4785 /* Cancel any currently running scans... */
4786 if (iwl4965_scan_cancel_timeout(priv, 100))
4787 IWL_WARNING("Could not cancel scan.\n");
4788 else {
4789 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
4790 "0x%04X\n", filter_flags);
4791 priv->staging_rxon.filter_flags =
4792 cpu_to_le32(filter_flags);
4793 iwl4965_commit_rxon(priv);
4794 }
4795 }
4796 mutex_unlock(&priv->mutex);
4797
4798 return count;
4799 }
4800
4801 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
4802 store_filter_flags);
4803
4804 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
4805
4806 static ssize_t show_measurement(struct device *d,
4807 struct device_attribute *attr, char *buf)
4808 {
4809 struct iwl_priv *priv = dev_get_drvdata(d);
4810 struct iwl4965_spectrum_notification measure_report;
4811 u32 size = sizeof(measure_report), len = 0, ofs = 0;
4812 u8 *data = (u8 *) & measure_report;
4813 unsigned long flags;
4814
4815 spin_lock_irqsave(&priv->lock, flags);
4816 if (!(priv->measurement_status & MEASUREMENT_READY)) {
4817 spin_unlock_irqrestore(&priv->lock, flags);
4818 return 0;
4819 }
4820 memcpy(&measure_report, &priv->measure_report, size);
4821 priv->measurement_status = 0;
4822 spin_unlock_irqrestore(&priv->lock, flags);
4823
4824 while (size && (PAGE_SIZE - len)) {
4825 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4826 PAGE_SIZE - len, 1);
4827 len = strlen(buf);
4828 if (PAGE_SIZE - len)
4829 buf[len++] = '\n';
4830
4831 ofs += 16;
4832 size -= min(size, 16U);
4833 }
4834
4835 return len;
4836 }
4837
4838 static ssize_t store_measurement(struct device *d,
4839 struct device_attribute *attr,
4840 const char *buf, size_t count)
4841 {
4842 struct iwl_priv *priv = dev_get_drvdata(d);
4843 struct ieee80211_measurement_params params = {
4844 .channel = le16_to_cpu(priv->active_rxon.channel),
4845 .start_time = cpu_to_le64(priv->last_tsf),
4846 .duration = cpu_to_le16(1),
4847 };
4848 u8 type = IWL_MEASURE_BASIC;
4849 u8 buffer[32];
4850 u8 channel;
4851
4852 if (count) {
4853 char *p = buffer;
4854 strncpy(buffer, buf, min(sizeof(buffer), count));
4855 channel = simple_strtoul(p, NULL, 0);
4856 if (channel)
4857 params.channel = channel;
4858
4859 p = buffer;
4860 while (*p && *p != ' ')
4861 p++;
4862 if (*p)
4863 type = simple_strtoul(p + 1, NULL, 0);
4864 }
4865
4866 IWL_DEBUG_INFO("Invoking measurement of type %d on "
4867 "channel %d (for '%s')\n", type, params.channel, buf);
4868 iwl4965_get_measurement(priv, &params, type);
4869
4870 return count;
4871 }
4872
4873 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
4874 show_measurement, store_measurement);
4875 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
4876
4877 static ssize_t store_retry_rate(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
4883 priv->retry_rate = simple_strtoul(buf, NULL, 0);
4884 if (priv->retry_rate <= 0)
4885 priv->retry_rate = 1;
4886
4887 return count;
4888 }
4889
4890 static ssize_t show_retry_rate(struct device *d,
4891 struct device_attribute *attr, char *buf)
4892 {
4893 struct iwl_priv *priv = dev_get_drvdata(d);
4894 return sprintf(buf, "%d", priv->retry_rate);
4895 }
4896
4897 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
4898 store_retry_rate);
4899
4900 static ssize_t store_power_level(struct device *d,
4901 struct device_attribute *attr,
4902 const char *buf, size_t count)
4903 {
4904 struct iwl_priv *priv = dev_get_drvdata(d);
4905 int rc;
4906 int mode;
4907
4908 mode = simple_strtoul(buf, NULL, 0);
4909 mutex_lock(&priv->mutex);
4910
4911 if (!iwl_is_ready(priv)) {
4912 rc = -EAGAIN;
4913 goto out;
4914 }
4915
4916 rc = iwl_power_set_user_mode(priv, mode);
4917 if (rc) {
4918 IWL_DEBUG_MAC80211("failed setting power mode.\n");
4919 goto out;
4920 }
4921 rc = count;
4922
4923 out:
4924 mutex_unlock(&priv->mutex);
4925 return rc;
4926 }
4927
4928 #define MAX_WX_STRING 80
4929
4930 /* Values are in microsecond */
4931 static const s32 timeout_duration[] = {
4932 350000,
4933 250000,
4934 75000,
4935 37000,
4936 25000,
4937 };
4938 static const s32 period_duration[] = {
4939 400000,
4940 700000,
4941 1000000,
4942 1000000,
4943 1000000
4944 };
4945
4946 static ssize_t show_power_level(struct device *d,
4947 struct device_attribute *attr, char *buf)
4948 {
4949 struct iwl_priv *priv = dev_get_drvdata(d);
4950 int level = priv->power_data.power_mode;
4951 char *p = buf;
4952
4953 p += sprintf(p, "%d ", level);
4954 switch (level) {
4955 case IWL_POWER_MODE_CAM:
4956 case IWL_POWER_AC:
4957 p += sprintf(p, "(AC)");
4958 break;
4959 case IWL_POWER_BATTERY:
4960 p += sprintf(p, "(BATTERY)");
4961 break;
4962 default:
4963 p += sprintf(p,
4964 "(Timeout %dms, Period %dms)",
4965 timeout_duration[level - 1] / 1000,
4966 period_duration[level - 1] / 1000);
4967 }
4968 /*
4969 if (!(priv->power_mode & IWL_POWER_ENABLED))
4970 p += sprintf(p, " OFF\n");
4971 else
4972 p += sprintf(p, " \n");
4973 */
4974 p += sprintf(p, " \n");
4975 return (p - buf + 1);
4976 }
4977
4978 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
4979 store_power_level);
4980
4981 static ssize_t show_channels(struct device *d,
4982 struct device_attribute *attr, char *buf)
4983 {
4984 /* all this shit doesn't belong into sysfs anyway */
4985 return 0;
4986 }
4987
4988 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
4989
4990 static ssize_t show_statistics(struct device *d,
4991 struct device_attribute *attr, char *buf)
4992 {
4993 struct iwl_priv *priv = dev_get_drvdata(d);
4994 u32 size = sizeof(struct iwl4965_notif_statistics);
4995 u32 len = 0, ofs = 0;
4996 u8 *data = (u8 *) & priv->statistics;
4997 int rc = 0;
4998
4999 if (!iwl_is_alive(priv))
5000 return -EAGAIN;
5001
5002 mutex_lock(&priv->mutex);
5003 rc = iwl_send_statistics_request(priv, 0);
5004 mutex_unlock(&priv->mutex);
5005
5006 if (rc) {
5007 len = sprintf(buf,
5008 "Error sending statistics request: 0x%08X\n", rc);
5009 return len;
5010 }
5011
5012 while (size && (PAGE_SIZE - len)) {
5013 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
5014 PAGE_SIZE - len, 1);
5015 len = strlen(buf);
5016 if (PAGE_SIZE - len)
5017 buf[len++] = '\n';
5018
5019 ofs += 16;
5020 size -= min(size, 16U);
5021 }
5022
5023 return len;
5024 }
5025
5026 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
5027
5028 static ssize_t show_status(struct device *d,
5029 struct device_attribute *attr, char *buf)
5030 {
5031 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5032 if (!iwl_is_alive(priv))
5033 return -EAGAIN;
5034 return sprintf(buf, "0x%08x\n", (int)priv->status);
5035 }
5036
5037 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
5038
5039 /*****************************************************************************
5040 *
5041 * driver setup and teardown
5042 *
5043 *****************************************************************************/
5044
5045 static void iwl_setup_deferred_work(struct iwl_priv *priv)
5046 {
5047 priv->workqueue = create_workqueue(DRV_NAME);
5048
5049 init_waitqueue_head(&priv->wait_command_queue);
5050
5051 INIT_WORK(&priv->up, iwl4965_bg_up);
5052 INIT_WORK(&priv->restart, iwl4965_bg_restart);
5053 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
5054 INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
5055 INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
5056 INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
5057 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
5058 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
5059 INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
5060 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
5061 INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
5062 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
5063 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
5064 INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
5065
5066 if (priv->cfg->ops->lib->setup_deferred_work)
5067 priv->cfg->ops->lib->setup_deferred_work(priv);
5068
5069 init_timer(&priv->statistics_periodic);
5070 priv->statistics_periodic.data = (unsigned long)priv;
5071 priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
5072
5073 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
5074 iwl4965_irq_tasklet, (unsigned long)priv);
5075 }
5076
5077 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
5078 {
5079 if (priv->cfg->ops->lib->cancel_deferred_work)
5080 priv->cfg->ops->lib->cancel_deferred_work(priv);
5081
5082 cancel_delayed_work_sync(&priv->init_alive_start);
5083 cancel_delayed_work(&priv->scan_check);
5084 cancel_delayed_work(&priv->alive_start);
5085 cancel_delayed_work(&priv->post_associate);
5086 cancel_work_sync(&priv->beacon_update);
5087 del_timer_sync(&priv->statistics_periodic);
5088 }
5089
5090 static struct attribute *iwl4965_sysfs_entries[] = {
5091 &dev_attr_channels.attr,
5092 &dev_attr_flags.attr,
5093 &dev_attr_filter_flags.attr,
5094 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
5095 &dev_attr_measurement.attr,
5096 #endif
5097 &dev_attr_power_level.attr,
5098 &dev_attr_retry_rate.attr,
5099 &dev_attr_rs_window.attr,
5100 &dev_attr_statistics.attr,
5101 &dev_attr_status.attr,
5102 &dev_attr_temperature.attr,
5103 &dev_attr_tx_power.attr,
5104 #ifdef CONFIG_IWLWIFI_DEBUG
5105 &dev_attr_debug_level.attr,
5106 #endif
5107 &dev_attr_version.attr,
5108
5109 NULL
5110 };
5111
5112 static struct attribute_group iwl4965_attribute_group = {
5113 .name = NULL, /* put in device directory */
5114 .attrs = iwl4965_sysfs_entries,
5115 };
5116
5117 static struct ieee80211_ops iwl4965_hw_ops = {
5118 .tx = iwl4965_mac_tx,
5119 .start = iwl4965_mac_start,
5120 .stop = iwl4965_mac_stop,
5121 .add_interface = iwl4965_mac_add_interface,
5122 .remove_interface = iwl4965_mac_remove_interface,
5123 .config = iwl4965_mac_config,
5124 .config_interface = iwl4965_mac_config_interface,
5125 .configure_filter = iwl4965_configure_filter,
5126 .set_key = iwl4965_mac_set_key,
5127 .update_tkip_key = iwl4965_mac_update_tkip_key,
5128 .get_stats = iwl4965_mac_get_stats,
5129 .get_tx_stats = iwl4965_mac_get_tx_stats,
5130 .conf_tx = iwl4965_mac_conf_tx,
5131 .get_tsf = iwl4965_mac_get_tsf,
5132 .reset_tsf = iwl4965_mac_reset_tsf,
5133 .beacon_update = iwl4965_mac_beacon_update,
5134 .bss_info_changed = iwl4965_bss_info_changed,
5135 .ampdu_action = iwl4965_mac_ampdu_action,
5136 .hw_scan = iwl4965_mac_hw_scan
5137 };
5138
5139 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
5140 {
5141 int err = 0;
5142 struct iwl_priv *priv;
5143 struct ieee80211_hw *hw;
5144 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
5145 unsigned long flags;
5146 DECLARE_MAC_BUF(mac);
5147
5148 /************************
5149 * 1. Allocating HW data
5150 ************************/
5151
5152 /* Disabling hardware scan means that mac80211 will perform scans
5153 * "the hard way", rather than using device's scan. */
5154 if (cfg->mod_params->disable_hw_scan) {
5155 if (cfg->mod_params->debug & IWL_DL_INFO)
5156 dev_printk(KERN_DEBUG, &(pdev->dev),
5157 "Disabling hw_scan\n");
5158 iwl4965_hw_ops.hw_scan = NULL;
5159 }
5160
5161 hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
5162 if (!hw) {
5163 err = -ENOMEM;
5164 goto out;
5165 }
5166 priv = hw->priv;
5167 /* At this point both hw and priv are allocated. */
5168
5169 SET_IEEE80211_DEV(hw, &pdev->dev);
5170
5171 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
5172 priv->cfg = cfg;
5173 priv->pci_dev = pdev;
5174
5175 #ifdef CONFIG_IWLWIFI_DEBUG
5176 priv->debug_level = priv->cfg->mod_params->debug;
5177 atomic_set(&priv->restrict_refcnt, 0);
5178 #endif
5179
5180 /**************************
5181 * 2. Initializing PCI bus
5182 **************************/
5183 if (pci_enable_device(pdev)) {
5184 err = -ENODEV;
5185 goto out_ieee80211_free_hw;
5186 }
5187
5188 pci_set_master(pdev);
5189
5190 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
5191 if (!err)
5192 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
5193 if (err) {
5194 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
5195 if (!err)
5196 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
5197 /* both attempts failed: */
5198 if (err) {
5199 printk(KERN_WARNING "%s: No suitable DMA available.\n",
5200 DRV_NAME);
5201 goto out_pci_disable_device;
5202 }
5203 }
5204
5205 err = pci_request_regions(pdev, DRV_NAME);
5206 if (err)
5207 goto out_pci_disable_device;
5208
5209 pci_set_drvdata(pdev, priv);
5210
5211 /* We disable the RETRY_TIMEOUT register (0x41) to keep
5212 * PCI Tx retries from interfering with C3 CPU state */
5213 pci_write_config_byte(pdev, 0x41, 0x00);
5214
5215 /***********************
5216 * 3. Read REV register
5217 ***********************/
5218 priv->hw_base = pci_iomap(pdev, 0, 0);
5219 if (!priv->hw_base) {
5220 err = -ENODEV;
5221 goto out_pci_release_regions;
5222 }
5223
5224 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
5225 (unsigned long long) pci_resource_len(pdev, 0));
5226 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
5227
5228 iwl_hw_detect(priv);
5229 printk(KERN_INFO DRV_NAME
5230 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
5231 priv->cfg->name, priv->hw_rev);
5232
5233 /* amp init */
5234 err = priv->cfg->ops->lib->apm_ops.init(priv);
5235 if (err < 0) {
5236 IWL_DEBUG_INFO("Failed to init APMG\n");
5237 goto out_iounmap;
5238 }
5239 /*****************
5240 * 4. Read EEPROM
5241 *****************/
5242 /* Read the EEPROM */
5243 err = iwl_eeprom_init(priv);
5244 if (err) {
5245 IWL_ERROR("Unable to init EEPROM\n");
5246 goto out_iounmap;
5247 }
5248 err = iwl_eeprom_check_version(priv);
5249 if (err)
5250 goto out_iounmap;
5251
5252 /* extract MAC Address */
5253 iwl_eeprom_get_mac(priv, priv->mac_addr);
5254 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
5255 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
5256
5257 /************************
5258 * 5. Setup HW constants
5259 ************************/
5260 /* Device-specific setup */
5261 if (priv->cfg->ops->lib->set_hw_params(priv)) {
5262 IWL_ERROR("failed to set hw parameters\n");
5263 goto out_free_eeprom;
5264 }
5265
5266 /*******************
5267 * 6. Setup priv
5268 *******************/
5269
5270 err = iwl_init_drv(priv);
5271 if (err)
5272 goto out_free_eeprom;
5273 /* At this point both hw and priv are initialized. */
5274
5275 /**********************************
5276 * 7. Initialize module parameters
5277 **********************************/
5278
5279 /* Disable radio (SW RF KILL) via parameter when loading driver */
5280 if (priv->cfg->mod_params->disable) {
5281 set_bit(STATUS_RF_KILL_SW, &priv->status);
5282 IWL_DEBUG_INFO("Radio disabled.\n");
5283 }
5284
5285 /********************
5286 * 8. Setup services
5287 ********************/
5288 spin_lock_irqsave(&priv->lock, flags);
5289 iwl4965_disable_interrupts(priv);
5290 spin_unlock_irqrestore(&priv->lock, flags);
5291
5292 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5293 if (err) {
5294 IWL_ERROR("failed to create sysfs device attributes\n");
5295 goto out_uninit_drv;
5296 }
5297
5298
5299 iwl_setup_deferred_work(priv);
5300 iwl4965_setup_rx_handlers(priv);
5301
5302 /********************
5303 * 9. Conclude
5304 ********************/
5305 pci_save_state(pdev);
5306 pci_disable_device(pdev);
5307
5308 /**********************************
5309 * 10. Setup and register mac80211
5310 **********************************/
5311
5312 err = iwl_setup_mac(priv);
5313 if (err)
5314 goto out_remove_sysfs;
5315
5316 err = iwl_dbgfs_register(priv, DRV_NAME);
5317 if (err)
5318 IWL_ERROR("failed to create debugfs files\n");
5319
5320 /* notify iwlcore to init */
5321 iwlcore_low_level_notify(priv, IWLCORE_INIT_EVT);
5322 return 0;
5323
5324 out_remove_sysfs:
5325 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5326 out_uninit_drv:
5327 iwl_uninit_drv(priv);
5328 out_free_eeprom:
5329 iwl_eeprom_free(priv);
5330 out_iounmap:
5331 pci_iounmap(pdev, priv->hw_base);
5332 out_pci_release_regions:
5333 pci_release_regions(pdev);
5334 pci_set_drvdata(pdev, NULL);
5335 out_pci_disable_device:
5336 pci_disable_device(pdev);
5337 out_ieee80211_free_hw:
5338 ieee80211_free_hw(priv->hw);
5339 out:
5340 return err;
5341 }
5342
5343 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
5344 {
5345 struct iwl_priv *priv = pci_get_drvdata(pdev);
5346 struct list_head *p, *q;
5347 int i;
5348 unsigned long flags;
5349
5350 if (!priv)
5351 return;
5352
5353 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
5354
5355 iwl_dbgfs_unregister(priv);
5356 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5357
5358 if (priv->mac80211_registered) {
5359 ieee80211_unregister_hw(priv->hw);
5360 priv->mac80211_registered = 0;
5361 }
5362
5363 set_bit(STATUS_EXIT_PENDING, &priv->status);
5364
5365 iwl4965_down(priv);
5366
5367 /* make sure we flush any pending irq or
5368 * tasklet for the driver
5369 */
5370 spin_lock_irqsave(&priv->lock, flags);
5371 iwl4965_disable_interrupts(priv);
5372 spin_unlock_irqrestore(&priv->lock, flags);
5373
5374 iwl_synchronize_irq(priv);
5375
5376 /* Free MAC hash list for ADHOC */
5377 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
5378 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
5379 list_del(p);
5380 kfree(list_entry(p, struct iwl4965_ibss_seq, list));
5381 }
5382 }
5383
5384 iwlcore_low_level_notify(priv, IWLCORE_REMOVE_EVT);
5385
5386 iwl4965_dealloc_ucode_pci(priv);
5387
5388 if (priv->rxq.bd)
5389 iwl_rx_queue_free(priv, &priv->rxq);
5390 iwl_hw_txq_ctx_free(priv);
5391
5392 iwlcore_clear_stations_table(priv);
5393 iwl_eeprom_free(priv);
5394
5395
5396 /*netif_stop_queue(dev); */
5397 flush_workqueue(priv->workqueue);
5398
5399 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
5400 * priv->workqueue... so we can't take down the workqueue
5401 * until now... */
5402 destroy_workqueue(priv->workqueue);
5403 priv->workqueue = NULL;
5404
5405 pci_iounmap(pdev, priv->hw_base);
5406 pci_release_regions(pdev);
5407 pci_disable_device(pdev);
5408 pci_set_drvdata(pdev, NULL);
5409
5410 iwl_uninit_drv(priv);
5411
5412 if (priv->ibss_beacon)
5413 dev_kfree_skb(priv->ibss_beacon);
5414
5415 ieee80211_free_hw(priv->hw);
5416 }
5417
5418 #ifdef CONFIG_PM
5419
5420 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
5421 {
5422 struct iwl_priv *priv = pci_get_drvdata(pdev);
5423
5424 if (priv->is_open) {
5425 set_bit(STATUS_IN_SUSPEND, &priv->status);
5426 iwl4965_mac_stop(priv->hw);
5427 priv->is_open = 1;
5428 }
5429
5430 pci_set_power_state(pdev, PCI_D3hot);
5431
5432 return 0;
5433 }
5434
5435 static int iwl4965_pci_resume(struct pci_dev *pdev)
5436 {
5437 struct iwl_priv *priv = pci_get_drvdata(pdev);
5438
5439 pci_set_power_state(pdev, PCI_D0);
5440
5441 if (priv->is_open)
5442 iwl4965_mac_start(priv->hw);
5443
5444 clear_bit(STATUS_IN_SUSPEND, &priv->status);
5445 return 0;
5446 }
5447
5448 #endif /* CONFIG_PM */
5449
5450 /*****************************************************************************
5451 *
5452 * driver and module entry point
5453 *
5454 *****************************************************************************/
5455
5456 /* Hardware specific file defines the PCI IDs table for that hardware module */
5457 static struct pci_device_id iwl_hw_card_ids[] = {
5458 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
5459 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
5460 #ifdef CONFIG_IWL5000
5461 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
5462 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
5463 {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
5464 #endif /* CONFIG_IWL5000 */
5465 {0}
5466 };
5467 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
5468
5469 static struct pci_driver iwl_driver = {
5470 .name = DRV_NAME,
5471 .id_table = iwl_hw_card_ids,
5472 .probe = iwl4965_pci_probe,
5473 .remove = __devexit_p(iwl4965_pci_remove),
5474 #ifdef CONFIG_PM
5475 .suspend = iwl4965_pci_suspend,
5476 .resume = iwl4965_pci_resume,
5477 #endif
5478 };
5479
5480 static int __init iwl4965_init(void)
5481 {
5482
5483 int ret;
5484 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
5485 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
5486
5487 ret = iwl4965_rate_control_register();
5488 if (ret) {
5489 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
5490 return ret;
5491 }
5492
5493 ret = pci_register_driver(&iwl_driver);
5494 if (ret) {
5495 IWL_ERROR("Unable to initialize PCI module\n");
5496 goto error_register;
5497 }
5498
5499 return ret;
5500
5501 error_register:
5502 iwl4965_rate_control_unregister();
5503 return ret;
5504 }
5505
5506 static void __exit iwl4965_exit(void)
5507 {
5508 pci_unregister_driver(&iwl_driver);
5509 iwl4965_rate_control_unregister();
5510 }
5511
5512 module_exit(iwl4965_exit);
5513 module_init(iwl4965_init);
SocketAccessConTroL development