projects / deliverable / linux.git / blob
? search:


a5feb0cc982cd9e7f28bb49d8f5c5cc934de1cf3
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl-agn.c
1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
4 *
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
20 *
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
23 *
24 * Contact Information:
25 * James P. Ketrenos <ipw2100-admin@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
29
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/init.h>
33 #include <linux/pci.h>
34 #include <linux/dma-mapping.h>
35 #include <linux/delay.h>
36 #include <linux/skbuff.h>
37 #include <linux/netdevice.h>
38 #include <linux/wireless.h>
39 #include <linux/firmware.h>
40 #include <linux/etherdevice.h>
41 #include <linux/if_arp.h>
42
43 #include <net/mac80211.h>
44
45 #include <asm/div64.h>
46
47 #include "iwl-eeprom.h"
48 #include "iwl-dev.h"
49 #include "iwl-core.h"
50 #include "iwl-io.h"
51 #include "iwl-helpers.h"
52 #include "iwl-sta.h"
53 #include "iwl-calib.h"
54
55
56 /******************************************************************************
57 *
58 * module boiler plate
59 *
60 ******************************************************************************/
61
62 /*
63 * module name, copyright, version, etc.
64 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
65 */
66
67 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
68
69 #ifdef CONFIG_IWLWIFI_DEBUG
70 #define VD "d"
71 #else
72 #define VD
73 #endif
74
75 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
76 #define VS "s"
77 #else
78 #define VS
79 #endif
80
81 #define DRV_VERSION IWLWIFI_VERSION VD VS
82
83
84 MODULE_DESCRIPTION(DRV_DESCRIPTION);
85 MODULE_VERSION(DRV_VERSION);
86 MODULE_AUTHOR(DRV_COPYRIGHT);
87 MODULE_LICENSE("GPL");
88 MODULE_ALIAS("iwl4965");
89
90 /*************** STATION TABLE MANAGEMENT ****
91 * mac80211 should be examined to determine if sta_info is duplicating
92 * the functionality provided here
93 */
94
95 /**************************************************************/
96
97
98
99 static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
100 {
101 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
102
103 if (hw_decrypt)
104 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
105 else
106 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
107
108 }
109
110 /**
111 * iwl4965_check_rxon_cmd - validate RXON structure is valid
112 *
113 * NOTE: This is really only useful during development and can eventually
114 * be #ifdef'd out once the driver is stable and folks aren't actively
115 * making changes
116 */
117 static int iwl4965_check_rxon_cmd(struct iwl_rxon_cmd *rxon)
118 {
119 int error = 0;
120 int counter = 1;
121
122 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
123 error |= le32_to_cpu(rxon->flags &
124 (RXON_FLG_TGJ_NARROW_BAND_MSK |
125 RXON_FLG_RADAR_DETECT_MSK));
126 if (error)
127 IWL_WARNING("check 24G fields %d | %d\n",
128 counter++, error);
129 } else {
130 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
131 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
132 if (error)
133 IWL_WARNING("check 52 fields %d | %d\n",
134 counter++, error);
135 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
136 if (error)
137 IWL_WARNING("check 52 CCK %d | %d\n",
138 counter++, error);
139 }
140 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
141 if (error)
142 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
143
144 /* make sure basic rates 6Mbps and 1Mbps are supported */
145 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
146 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
147 if (error)
148 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
149
150 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
151 if (error)
152 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
153
154 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
155 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
156 if (error)
157 IWL_WARNING("check CCK and short slot %d | %d\n",
158 counter++, error);
159
160 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
161 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
162 if (error)
163 IWL_WARNING("check CCK & auto detect %d | %d\n",
164 counter++, error);
165
166 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
167 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
168 if (error)
169 IWL_WARNING("check TGG and auto detect %d | %d\n",
170 counter++, error);
171
172 if (error)
173 IWL_WARNING("Tuning to channel %d\n",
174 le16_to_cpu(rxon->channel));
175
176 if (error) {
177 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
178 return -1;
179 }
180 return 0;
181 }
182
183 /**
184 * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
185 * @priv: staging_rxon is compared to active_rxon
186 *
187 * If the RXON structure is changing enough to require a new tune,
188 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
189 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
190 */
191 static int iwl_full_rxon_required(struct iwl_priv *priv)
192 {
193
194 /* These items are only settable from the full RXON command */
195 if (!(iwl_is_associated(priv)) ||
196 compare_ether_addr(priv->staging_rxon.bssid_addr,
197 priv->active_rxon.bssid_addr) ||
198 compare_ether_addr(priv->staging_rxon.node_addr,
199 priv->active_rxon.node_addr) ||
200 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
201 priv->active_rxon.wlap_bssid_addr) ||
202 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
203 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
204 (priv->staging_rxon.air_propagation !=
205 priv->active_rxon.air_propagation) ||
206 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
207 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
208 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
209 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
210 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
211 return 1;
212
213 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
214 * be updated with the RXON_ASSOC command -- however only some
215 * flag transitions are allowed using RXON_ASSOC */
216
217 /* Check if we are not switching bands */
218 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
219 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
220 return 1;
221
222 /* Check if we are switching association toggle */
223 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
224 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
225 return 1;
226
227 return 0;
228 }
229
230 /**
231 * iwl4965_commit_rxon - commit staging_rxon to hardware
232 *
233 * The RXON command in staging_rxon is committed to the hardware and
234 * the active_rxon structure is updated with the new data. This
235 * function correctly transitions out of the RXON_ASSOC_MSK state if
236 * a HW tune is required based on the RXON structure changes.
237 */
238 static int iwl4965_commit_rxon(struct iwl_priv *priv)
239 {
240 /* cast away the const for active_rxon in this function */
241 struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
242 DECLARE_MAC_BUF(mac);
243 int ret;
244 bool new_assoc =
245 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
246
247 if (!iwl_is_alive(priv))
248 return -EBUSY;
249
250 /* always get timestamp with Rx frame */
251 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
252 /* allow CTS-to-self if possible. this is relevant only for
253 * 5000, but will not damage 4965 */
254 priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
255
256 ret = iwl4965_check_rxon_cmd(&priv->staging_rxon);
257 if (ret) {
258 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
259 return -EINVAL;
260 }
261
262 /* If we don't need to send a full RXON, we can use
263 * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
264 * and other flags for the current radio configuration. */
265 if (!iwl_full_rxon_required(priv)) {
266 ret = iwl_send_rxon_assoc(priv);
267 if (ret) {
268 IWL_ERROR("Error setting RXON_ASSOC (%d)\n", ret);
269 return ret;
270 }
271
272 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
273 return 0;
274 }
275
276 /* station table will be cleared */
277 priv->assoc_station_added = 0;
278
279 /* If we are currently associated and the new config requires
280 * an RXON_ASSOC and the new config wants the associated mask enabled,
281 * we must clear the associated from the active configuration
282 * before we apply the new config */
283 if (iwl_is_associated(priv) && new_assoc) {
284 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
285 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
286
287 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
288 sizeof(struct iwl_rxon_cmd),
289 &priv->active_rxon);
290
291 /* If the mask clearing failed then we set
292 * active_rxon back to what it was previously */
293 if (ret) {
294 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
295 IWL_ERROR("Error clearing ASSOC_MSK (%d)\n", ret);
296 return ret;
297 }
298 }
299
300 IWL_DEBUG_INFO("Sending RXON\n"
301 "* with%s RXON_FILTER_ASSOC_MSK\n"
302 "* channel = %d\n"
303 "* bssid = %s\n",
304 (new_assoc ? "" : "out"),
305 le16_to_cpu(priv->staging_rxon.channel),
306 print_mac(mac, priv->staging_rxon.bssid_addr));
307
308 iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
309
310 /* Apply the new configuration
311 * RXON unassoc clears the station table in uCode, send it before
312 * we add the bcast station. If assoc bit is set, we will send RXON
313 * after having added the bcast and bssid station.
314 */
315 if (!new_assoc) {
316 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
317 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
318 if (ret) {
319 IWL_ERROR("Error setting new RXON (%d)\n", ret);
320 return ret;
321 }
322 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
323 }
324
325 iwl_clear_stations_table(priv);
326
327 if (!priv->error_recovering)
328 priv->start_calib = 0;
329
330 /* Add the broadcast address so we can send broadcast frames */
331 if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
332 IWL_INVALID_STATION) {
333 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
334 return -EIO;
335 }
336
337 /* If we have set the ASSOC_MSK and we are in BSS mode then
338 * add the IWL_AP_ID to the station rate table */
339 if (new_assoc) {
340 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
341 ret = iwl_rxon_add_station(priv,
342 priv->active_rxon.bssid_addr, 1);
343 if (ret == IWL_INVALID_STATION) {
344 IWL_ERROR("Error adding AP address for TX.\n");
345 return -EIO;
346 }
347 priv->assoc_station_added = 1;
348 if (priv->default_wep_key &&
349 iwl_send_static_wepkey_cmd(priv, 0))
350 IWL_ERROR("Could not send WEP static key.\n");
351 }
352
353 /* Apply the new configuration
354 * RXON assoc doesn't clear the station table in uCode,
355 */
356 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
357 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
358 if (ret) {
359 IWL_ERROR("Error setting new RXON (%d)\n", ret);
360 return ret;
361 }
362 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
363 }
364
365 iwl_init_sensitivity(priv);
366
367 /* If we issue a new RXON command which required a tune then we must
368 * send a new TXPOWER command or we won't be able to Tx any frames */
369 ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
370 if (ret) {
371 IWL_ERROR("Error sending TX power (%d)\n", ret);
372 return ret;
373 }
374
375 return 0;
376 }
377
378 void iwl4965_update_chain_flags(struct iwl_priv *priv)
379 {
380
381 iwl_set_rxon_chain(priv);
382 iwl4965_commit_rxon(priv);
383 }
384
385 static int iwl4965_send_bt_config(struct iwl_priv *priv)
386 {
387 struct iwl4965_bt_cmd bt_cmd = {
388 .flags = 3,
389 .lead_time = 0xAA,
390 .max_kill = 1,
391 .kill_ack_mask = 0,
392 .kill_cts_mask = 0,
393 };
394
395 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
396 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
397 }
398
399 static void iwl_clear_free_frames(struct iwl_priv *priv)
400 {
401 struct list_head *element;
402
403 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
404 priv->frames_count);
405
406 while (!list_empty(&priv->free_frames)) {
407 element = priv->free_frames.next;
408 list_del(element);
409 kfree(list_entry(element, struct iwl_frame, list));
410 priv->frames_count--;
411 }
412
413 if (priv->frames_count) {
414 IWL_WARNING("%d frames still in use. Did we lose one?\n",
415 priv->frames_count);
416 priv->frames_count = 0;
417 }
418 }
419
420 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
421 {
422 struct iwl_frame *frame;
423 struct list_head *element;
424 if (list_empty(&priv->free_frames)) {
425 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
426 if (!frame) {
427 IWL_ERROR("Could not allocate frame!\n");
428 return NULL;
429 }
430
431 priv->frames_count++;
432 return frame;
433 }
434
435 element = priv->free_frames.next;
436 list_del(element);
437 return list_entry(element, struct iwl_frame, list);
438 }
439
440 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
441 {
442 memset(frame, 0, sizeof(*frame));
443 list_add(&frame->list, &priv->free_frames);
444 }
445
446 static unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
447 struct ieee80211_hdr *hdr,
448 const u8 *dest, int left)
449 {
450 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
451 ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
452 (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
453 return 0;
454
455 if (priv->ibss_beacon->len > left)
456 return 0;
457
458 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
459
460 return priv->ibss_beacon->len;
461 }
462
463 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
464 {
465 int i;
466 int rate_mask;
467
468 /* Set rate mask*/
469 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
470 rate_mask = priv->active_rate_basic & 0xF;
471 else
472 rate_mask = priv->active_rate_basic & 0xFF0;
473
474 /* Find lowest valid rate */
475 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
476 i = iwl_rates[i].next_ieee) {
477 if (rate_mask & (1 << i))
478 return iwl_rates[i].plcp;
479 }
480
481 /* No valid rate was found. Assign the lowest one */
482 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
483 return IWL_RATE_1M_PLCP;
484 else
485 return IWL_RATE_6M_PLCP;
486 }
487
488 unsigned int iwl4965_hw_get_beacon_cmd(struct iwl_priv *priv,
489 struct iwl_frame *frame, u8 rate)
490 {
491 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
492 unsigned int frame_size;
493
494 tx_beacon_cmd = &frame->u.beacon;
495 memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
496
497 tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
498 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
499
500 frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
501 iwl_bcast_addr,
502 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
503
504 BUG_ON(frame_size > MAX_MPDU_SIZE);
505 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
506
507 if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
508 tx_beacon_cmd->tx.rate_n_flags =
509 iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
510 else
511 tx_beacon_cmd->tx.rate_n_flags =
512 iwl_hw_set_rate_n_flags(rate, 0);
513
514 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
515 TX_CMD_FLG_TSF_MSK |
516 TX_CMD_FLG_STA_RATE_MSK;
517
518 return sizeof(*tx_beacon_cmd) + frame_size;
519 }
520 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
521 {
522 struct iwl_frame *frame;
523 unsigned int frame_size;
524 int rc;
525 u8 rate;
526
527 frame = iwl_get_free_frame(priv);
528
529 if (!frame) {
530 IWL_ERROR("Could not obtain free frame buffer for beacon "
531 "command.\n");
532 return -ENOMEM;
533 }
534
535 rate = iwl4965_rate_get_lowest_plcp(priv);
536
537 frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
538
539 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
540 &frame->u.cmd[0]);
541
542 iwl_free_frame(priv, frame);
543
544 return rc;
545 }
546
547 /******************************************************************************
548 *
549 * Misc. internal state and helper functions
550 *
551 ******************************************************************************/
552
553 static void iwl4965_ht_conf(struct iwl_priv *priv,
554 struct ieee80211_bss_conf *bss_conf)
555 {
556 struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
557 struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
558 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
559
560 IWL_DEBUG_MAC80211("enter: \n");
561
562 iwl_conf->is_ht = bss_conf->assoc_ht;
563
564 if (!iwl_conf->is_ht)
565 return;
566
567 priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
568
569 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
570 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
571 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
572 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
573
574 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
575 iwl_conf->max_amsdu_size =
576 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
577
578 iwl_conf->supported_chan_width =
579 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
580 iwl_conf->extension_chan_offset =
581 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
582 /* If no above or below channel supplied disable FAT channel */
583 if (iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_ABOVE &&
584 iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_BELOW) {
585 iwl_conf->extension_chan_offset = IEEE80211_HT_IE_CHA_SEC_NONE;
586 iwl_conf->supported_chan_width = 0;
587 }
588
589 iwl_conf->tx_mimo_ps_mode =
590 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
591 memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
592
593 iwl_conf->control_channel = ht_bss_conf->primary_channel;
594 iwl_conf->tx_chan_width =
595 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
596 iwl_conf->ht_protection =
597 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
598 iwl_conf->non_GF_STA_present =
599 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
600
601 IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
602 IWL_DEBUG_MAC80211("leave\n");
603 }
604
605 /*
606 * QoS support
607 */
608 static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
609 {
610 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
611 return;
612
613 if (!priv->qos_data.qos_enable)
614 return;
615
616 priv->qos_data.def_qos_parm.qos_flags = 0;
617
618 if (priv->qos_data.qos_cap.q_AP.queue_request &&
619 !priv->qos_data.qos_cap.q_AP.txop_request)
620 priv->qos_data.def_qos_parm.qos_flags |=
621 QOS_PARAM_FLG_TXOP_TYPE_MSK;
622 if (priv->qos_data.qos_active)
623 priv->qos_data.def_qos_parm.qos_flags |=
624 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
625
626 if (priv->current_ht_config.is_ht)
627 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
628
629 if (force || iwl_is_associated(priv)) {
630 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
631 priv->qos_data.qos_active,
632 priv->qos_data.def_qos_parm.qos_flags);
633
634 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
635 sizeof(struct iwl_qosparam_cmd),
636 &priv->qos_data.def_qos_parm, NULL);
637 }
638 }
639
640 #define MAX_UCODE_BEACON_INTERVAL 4096
641
642 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
643 {
644 u16 new_val = 0;
645 u16 beacon_factor = 0;
646
647 beacon_factor =
648 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
649 / MAX_UCODE_BEACON_INTERVAL;
650 new_val = beacon_val / beacon_factor;
651
652 return cpu_to_le16(new_val);
653 }
654
655 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
656 {
657 u64 interval_tm_unit;
658 u64 tsf, result;
659 unsigned long flags;
660 struct ieee80211_conf *conf = NULL;
661 u16 beacon_int = 0;
662
663 conf = ieee80211_get_hw_conf(priv->hw);
664
665 spin_lock_irqsave(&priv->lock, flags);
666 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
667 priv->rxon_timing.timestamp.dw[0] =
668 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
669
670 priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
671
672 tsf = priv->timestamp;
673
674 beacon_int = priv->beacon_int;
675 spin_unlock_irqrestore(&priv->lock, flags);
676
677 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
678 if (beacon_int == 0) {
679 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
680 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
681 } else {
682 priv->rxon_timing.beacon_interval =
683 cpu_to_le16(beacon_int);
684 priv->rxon_timing.beacon_interval =
685 iwl4965_adjust_beacon_interval(
686 le16_to_cpu(priv->rxon_timing.beacon_interval));
687 }
688
689 priv->rxon_timing.atim_window = 0;
690 } else {
691 priv->rxon_timing.beacon_interval =
692 iwl4965_adjust_beacon_interval(conf->beacon_int);
693 /* TODO: we need to get atim_window from upper stack
694 * for now we set to 0 */
695 priv->rxon_timing.atim_window = 0;
696 }
697
698 interval_tm_unit =
699 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
700 result = do_div(tsf, interval_tm_unit);
701 priv->rxon_timing.beacon_init_val =
702 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
703
704 IWL_DEBUG_ASSOC
705 ("beacon interval %d beacon timer %d beacon tim %d\n",
706 le16_to_cpu(priv->rxon_timing.beacon_interval),
707 le32_to_cpu(priv->rxon_timing.beacon_init_val),
708 le16_to_cpu(priv->rxon_timing.atim_window));
709 }
710
711 static void iwl_set_flags_for_band(struct iwl_priv *priv,
712 enum ieee80211_band band)
713 {
714 if (band == IEEE80211_BAND_5GHZ) {
715 priv->staging_rxon.flags &=
716 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
717 | RXON_FLG_CCK_MSK);
718 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
719 } else {
720 /* Copied from iwl4965_post_associate() */
721 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
722 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
723 else
724 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
725
726 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
727 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
728
729 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
730 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
731 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
732 }
733 }
734
735 /*
736 * initialize rxon structure with default values from eeprom
737 */
738 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
739 {
740 const struct iwl_channel_info *ch_info;
741
742 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
743
744 switch (priv->iw_mode) {
745 case IEEE80211_IF_TYPE_AP:
746 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
747 break;
748
749 case IEEE80211_IF_TYPE_STA:
750 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
751 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
752 break;
753
754 case IEEE80211_IF_TYPE_IBSS:
755 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
756 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
757 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
758 RXON_FILTER_ACCEPT_GRP_MSK;
759 break;
760
761 case IEEE80211_IF_TYPE_MNTR:
762 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
763 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
764 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
765 break;
766 default:
767 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
768 break;
769 }
770
771 #if 0
772 /* TODO: Figure out when short_preamble would be set and cache from
773 * that */
774 if (!hw_to_local(priv->hw)->short_preamble)
775 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
776 else
777 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
778 #endif
779
780 ch_info = iwl_get_channel_info(priv, priv->band,
781 le16_to_cpu(priv->active_rxon.channel));
782
783 if (!ch_info)
784 ch_info = &priv->channel_info[0];
785
786 /*
787 * in some case A channels are all non IBSS
788 * in this case force B/G channel
789 */
790 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
791 !(is_channel_ibss(ch_info)))
792 ch_info = &priv->channel_info[0];
793
794 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
795 priv->band = ch_info->band;
796
797 iwl_set_flags_for_band(priv, priv->band);
798
799 priv->staging_rxon.ofdm_basic_rates =
800 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
801 priv->staging_rxon.cck_basic_rates =
802 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
803
804 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
805 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
806 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
807 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
808 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
809 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
810 iwl_set_rxon_chain(priv);
811 }
812
813 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
814 {
815 priv->iw_mode = mode;
816
817 iwl4965_connection_init_rx_config(priv);
818 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
819
820 iwl_clear_stations_table(priv);
821
822 /* dont commit rxon if rf-kill is on*/
823 if (!iwl_is_ready_rf(priv))
824 return -EAGAIN;
825
826 cancel_delayed_work(&priv->scan_check);
827 if (iwl_scan_cancel_timeout(priv, 100)) {
828 IWL_WARNING("Aborted scan still in progress after 100ms\n");
829 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
830 return -EAGAIN;
831 }
832
833 iwl4965_commit_rxon(priv);
834
835 return 0;
836 }
837
838 static void iwl4965_set_rate(struct iwl_priv *priv)
839 {
840 const struct ieee80211_supported_band *hw = NULL;
841 struct ieee80211_rate *rate;
842 int i;
843
844 hw = iwl_get_hw_mode(priv, priv->band);
845 if (!hw) {
846 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
847 return;
848 }
849
850 priv->active_rate = 0;
851 priv->active_rate_basic = 0;
852
853 for (i = 0; i < hw->n_bitrates; i++) {
854 rate = &(hw->bitrates[i]);
855 if (rate->hw_value < IWL_RATE_COUNT)
856 priv->active_rate |= (1 << rate->hw_value);
857 }
858
859 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
860 priv->active_rate, priv->active_rate_basic);
861
862 /*
863 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
864 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
865 * OFDM
866 */
867 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
868 priv->staging_rxon.cck_basic_rates =
869 ((priv->active_rate_basic &
870 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
871 else
872 priv->staging_rxon.cck_basic_rates =
873 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
874
875 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
876 priv->staging_rxon.ofdm_basic_rates =
877 ((priv->active_rate_basic &
878 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
879 IWL_FIRST_OFDM_RATE) & 0xFF;
880 else
881 priv->staging_rxon.ofdm_basic_rates =
882 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
883 }
884
885 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
886
887 #include "iwl-spectrum.h"
888
889 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
890 #define BEACON_TIME_MASK_HIGH 0xFF000000
891 #define TIME_UNIT 1024
892
893 /*
894 * extended beacon time format
895 * time in usec will be changed into a 32-bit value in 8:24 format
896 * the high 1 byte is the beacon counts
897 * the lower 3 bytes is the time in usec within one beacon interval
898 */
899
900 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
901 {
902 u32 quot;
903 u32 rem;
904 u32 interval = beacon_interval * 1024;
905
906 if (!interval || !usec)
907 return 0;
908
909 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
910 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
911
912 return (quot << 24) + rem;
913 }
914
915 /* base is usually what we get from ucode with each received frame,
916 * the same as HW timer counter counting down
917 */
918
919 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
920 {
921 u32 base_low = base & BEACON_TIME_MASK_LOW;
922 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
923 u32 interval = beacon_interval * TIME_UNIT;
924 u32 res = (base & BEACON_TIME_MASK_HIGH) +
925 (addon & BEACON_TIME_MASK_HIGH);
926
927 if (base_low > addon_low)
928 res += base_low - addon_low;
929 else if (base_low < addon_low) {
930 res += interval + base_low - addon_low;
931 res += (1 << 24);
932 } else
933 res += (1 << 24);
934
935 return cpu_to_le32(res);
936 }
937
938 static int iwl4965_get_measurement(struct iwl_priv *priv,
939 struct ieee80211_measurement_params *params,
940 u8 type)
941 {
942 struct iwl4965_spectrum_cmd spectrum;
943 struct iwl_rx_packet *res;
944 struct iwl_host_cmd cmd = {
945 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
946 .data = (void *)&spectrum,
947 .meta.flags = CMD_WANT_SKB,
948 };
949 u32 add_time = le64_to_cpu(params->start_time);
950 int rc;
951 int spectrum_resp_status;
952 int duration = le16_to_cpu(params->duration);
953
954 if (iwl_is_associated(priv))
955 add_time =
956 iwl4965_usecs_to_beacons(
957 le64_to_cpu(params->start_time) - priv->last_tsf,
958 le16_to_cpu(priv->rxon_timing.beacon_interval));
959
960 memset(&spectrum, 0, sizeof(spectrum));
961
962 spectrum.channel_count = cpu_to_le16(1);
963 spectrum.flags =
964 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
965 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
966 cmd.len = sizeof(spectrum);
967 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
968
969 if (iwl_is_associated(priv))
970 spectrum.start_time =
971 iwl4965_add_beacon_time(priv->last_beacon_time,
972 add_time,
973 le16_to_cpu(priv->rxon_timing.beacon_interval));
974 else
975 spectrum.start_time = 0;
976
977 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
978 spectrum.channels[0].channel = params->channel;
979 spectrum.channels[0].type = type;
980 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
981 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
982 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
983
984 rc = iwl_send_cmd_sync(priv, &cmd);
985 if (rc)
986 return rc;
987
988 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
989 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
990 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
991 rc = -EIO;
992 }
993
994 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
995 switch (spectrum_resp_status) {
996 case 0: /* Command will be handled */
997 if (res->u.spectrum.id != 0xff) {
998 IWL_DEBUG_INFO
999 ("Replaced existing measurement: %d\n",
1000 res->u.spectrum.id);
1001 priv->measurement_status &= ~MEASUREMENT_READY;
1002 }
1003 priv->measurement_status |= MEASUREMENT_ACTIVE;
1004 rc = 0;
1005 break;
1006
1007 case 1: /* Command will not be handled */
1008 rc = -EAGAIN;
1009 break;
1010 }
1011
1012 dev_kfree_skb_any(cmd.meta.u.skb);
1013
1014 return rc;
1015 }
1016 #endif
1017
1018 /******************************************************************************
1019 *
1020 * Generic RX handler implementations
1021 *
1022 ******************************************************************************/
1023 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1024 struct iwl_rx_mem_buffer *rxb)
1025 {
1026 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1027 struct iwl_alive_resp *palive;
1028 struct delayed_work *pwork;
1029
1030 palive = &pkt->u.alive_frame;
1031
1032 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1033 "0x%01X 0x%01X\n",
1034 palive->is_valid, palive->ver_type,
1035 palive->ver_subtype);
1036
1037 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1038 IWL_DEBUG_INFO("Initialization Alive received.\n");
1039 memcpy(&priv->card_alive_init,
1040 &pkt->u.alive_frame,
1041 sizeof(struct iwl_init_alive_resp));
1042 pwork = &priv->init_alive_start;
1043 } else {
1044 IWL_DEBUG_INFO("Runtime Alive received.\n");
1045 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1046 sizeof(struct iwl_alive_resp));
1047 pwork = &priv->alive_start;
1048 }
1049
1050 /* We delay the ALIVE response by 5ms to
1051 * give the HW RF Kill time to activate... */
1052 if (palive->is_valid == UCODE_VALID_OK)
1053 queue_delayed_work(priv->workqueue, pwork,
1054 msecs_to_jiffies(5));
1055 else
1056 IWL_WARNING("uCode did not respond OK.\n");
1057 }
1058
1059 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1060 struct iwl_rx_mem_buffer *rxb)
1061 {
1062 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1063
1064 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1065 "seq 0x%04X ser 0x%08X\n",
1066 le32_to_cpu(pkt->u.err_resp.error_type),
1067 get_cmd_string(pkt->u.err_resp.cmd_id),
1068 pkt->u.err_resp.cmd_id,
1069 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1070 le32_to_cpu(pkt->u.err_resp.error_info));
1071 }
1072
1073 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1074
1075 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1076 {
1077 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1078 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1079 struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1080 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1081 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1082 rxon->channel = csa->channel;
1083 priv->staging_rxon.channel = csa->channel;
1084 }
1085
1086 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1087 struct iwl_rx_mem_buffer *rxb)
1088 {
1089 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
1090 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1091 struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1092
1093 if (!report->state) {
1094 IWL_DEBUG(IWL_DL_11H,
1095 "Spectrum Measure Notification: Start\n");
1096 return;
1097 }
1098
1099 memcpy(&priv->measure_report, report, sizeof(*report));
1100 priv->measurement_status |= MEASUREMENT_READY;
1101 #endif
1102 }
1103
1104 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1105 struct iwl_rx_mem_buffer *rxb)
1106 {
1107 #ifdef CONFIG_IWLWIFI_DEBUG
1108 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1109 struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1110 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1111 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1112 #endif
1113 }
1114
1115 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1116 struct iwl_rx_mem_buffer *rxb)
1117 {
1118 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1119 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1120 "notification for %s:\n",
1121 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1122 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1123 }
1124
1125 static void iwl4965_bg_beacon_update(struct work_struct *work)
1126 {
1127 struct iwl_priv *priv =
1128 container_of(work, struct iwl_priv, beacon_update);
1129 struct sk_buff *beacon;
1130
1131 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1132 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1133
1134 if (!beacon) {
1135 IWL_ERROR("update beacon failed\n");
1136 return;
1137 }
1138
1139 mutex_lock(&priv->mutex);
1140 /* new beacon skb is allocated every time; dispose previous.*/
1141 if (priv->ibss_beacon)
1142 dev_kfree_skb(priv->ibss_beacon);
1143
1144 priv->ibss_beacon = beacon;
1145 mutex_unlock(&priv->mutex);
1146
1147 iwl4965_send_beacon_cmd(priv);
1148 }
1149
1150 /**
1151 * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1152 *
1153 * This callback is provided in order to send a statistics request.
1154 *
1155 * This timer function is continually reset to execute within
1156 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1157 * was received. We need to ensure we receive the statistics in order
1158 * to update the temperature used for calibrating the TXPOWER.
1159 */
1160 static void iwl4965_bg_statistics_periodic(unsigned long data)
1161 {
1162 struct iwl_priv *priv = (struct iwl_priv *)data;
1163
1164 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1165 return;
1166
1167 iwl_send_statistics_request(priv, CMD_ASYNC);
1168 }
1169
1170 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1171 struct iwl_rx_mem_buffer *rxb)
1172 {
1173 #ifdef CONFIG_IWLWIFI_DEBUG
1174 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1175 struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1176 u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1177
1178 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1179 "tsf %d %d rate %d\n",
1180 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1181 beacon->beacon_notify_hdr.failure_frame,
1182 le32_to_cpu(beacon->ibss_mgr_status),
1183 le32_to_cpu(beacon->high_tsf),
1184 le32_to_cpu(beacon->low_tsf), rate);
1185 #endif
1186
1187 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
1188 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1189 queue_work(priv->workqueue, &priv->beacon_update);
1190 }
1191
1192 /* Handle notification from uCode that card's power state is changing
1193 * due to software, hardware, or critical temperature RFKILL */
1194 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1195 struct iwl_rx_mem_buffer *rxb)
1196 {
1197 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1198 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1199 unsigned long status = priv->status;
1200
1201 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1202 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1203 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1204
1205 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1206 RF_CARD_DISABLED)) {
1207
1208 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1209 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1210
1211 if (!iwl_grab_nic_access(priv)) {
1212 iwl_write_direct32(
1213 priv, HBUS_TARG_MBX_C,
1214 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1215
1216 iwl_release_nic_access(priv);
1217 }
1218
1219 if (!(flags & RXON_CARD_DISABLED)) {
1220 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1221 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1222 if (!iwl_grab_nic_access(priv)) {
1223 iwl_write_direct32(
1224 priv, HBUS_TARG_MBX_C,
1225 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1226
1227 iwl_release_nic_access(priv);
1228 }
1229 }
1230
1231 if (flags & RF_CARD_DISABLED) {
1232 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1233 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1234 iwl_read32(priv, CSR_UCODE_DRV_GP1);
1235 if (!iwl_grab_nic_access(priv))
1236 iwl_release_nic_access(priv);
1237 }
1238 }
1239
1240 if (flags & HW_CARD_DISABLED)
1241 set_bit(STATUS_RF_KILL_HW, &priv->status);
1242 else
1243 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1244
1245
1246 if (flags & SW_CARD_DISABLED)
1247 set_bit(STATUS_RF_KILL_SW, &priv->status);
1248 else
1249 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1250
1251 if (!(flags & RXON_CARD_DISABLED))
1252 iwl_scan_cancel(priv);
1253
1254 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1255 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1256 (test_bit(STATUS_RF_KILL_SW, &status) !=
1257 test_bit(STATUS_RF_KILL_SW, &priv->status)))
1258 queue_work(priv->workqueue, &priv->rf_kill);
1259 else
1260 wake_up_interruptible(&priv->wait_command_queue);
1261 }
1262
1263 int iwl4965_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
1264 {
1265 int ret;
1266 unsigned long flags;
1267
1268 spin_lock_irqsave(&priv->lock, flags);
1269 ret = iwl_grab_nic_access(priv);
1270 if (ret)
1271 goto err;
1272
1273 if (src == IWL_PWR_SRC_VAUX) {
1274 u32 val;
1275 ret = pci_read_config_dword(priv->pci_dev, PCI_POWER_SOURCE,
1276 &val);
1277
1278 if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT)
1279 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1280 APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
1281 ~APMG_PS_CTRL_MSK_PWR_SRC);
1282 } else {
1283 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1284 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
1285 ~APMG_PS_CTRL_MSK_PWR_SRC);
1286 }
1287
1288 iwl_release_nic_access(priv);
1289 err:
1290 spin_unlock_irqrestore(&priv->lock, flags);
1291 return ret;
1292 }
1293
1294 /**
1295 * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1296 *
1297 * Setup the RX handlers for each of the reply types sent from the uCode
1298 * to the host.
1299 *
1300 * This function chains into the hardware specific files for them to setup
1301 * any hardware specific handlers as well.
1302 */
1303 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1304 {
1305 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1306 priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1307 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1308 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1309 iwl4965_rx_spectrum_measure_notif;
1310 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1311 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1312 iwl4965_rx_pm_debug_statistics_notif;
1313 priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1314
1315 /*
1316 * The same handler is used for both the REPLY to a discrete
1317 * statistics request from the host as well as for the periodic
1318 * statistics notifications (after received beacons) from the uCode.
1319 */
1320 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1321 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1322
1323 iwl_setup_rx_scan_handlers(priv);
1324
1325 /* status change handler */
1326 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1327
1328 priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1329 iwl_rx_missed_beacon_notif;
1330 /* Rx handlers */
1331 priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1332 priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1333 /* block ack */
1334 priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1335 /* Set up hardware specific Rx handlers */
1336 priv->cfg->ops->lib->rx_handler_setup(priv);
1337 }
1338
1339 /*
1340 * this should be called while priv->lock is locked
1341 */
1342 static void __iwl_rx_replenish(struct iwl_priv *priv)
1343 {
1344 iwl_rx_allocate(priv);
1345 iwl_rx_queue_restock(priv);
1346 }
1347
1348
1349 /**
1350 * iwl_rx_handle - Main entry function for receiving responses from uCode
1351 *
1352 * Uses the priv->rx_handlers callback function array to invoke
1353 * the appropriate handlers, including command responses,
1354 * frame-received notifications, and other notifications.
1355 */
1356 void iwl_rx_handle(struct iwl_priv *priv)
1357 {
1358 struct iwl_rx_mem_buffer *rxb;
1359 struct iwl_rx_packet *pkt;
1360 struct iwl_rx_queue *rxq = &priv->rxq;
1361 u32 r, i;
1362 int reclaim;
1363 unsigned long flags;
1364 u8 fill_rx = 0;
1365 u32 count = 8;
1366
1367 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1368 * buffer that the driver may process (last buffer filled by ucode). */
1369 r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1370 i = rxq->read;
1371
1372 /* Rx interrupt, but nothing sent from uCode */
1373 if (i == r)
1374 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1375
1376 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1377 fill_rx = 1;
1378
1379 while (i != r) {
1380 rxb = rxq->queue[i];
1381
1382 /* If an RXB doesn't have a Rx queue slot associated with it,
1383 * then a bug has been introduced in the queue refilling
1384 * routines -- catch it here */
1385 BUG_ON(rxb == NULL);
1386
1387 rxq->queue[i] = NULL;
1388
1389 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1390 priv->hw_params.rx_buf_size,
1391 PCI_DMA_FROMDEVICE);
1392 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1393
1394 /* Reclaim a command buffer only if this packet is a response
1395 * to a (driver-originated) command.
1396 * If the packet (e.g. Rx frame) originated from uCode,
1397 * there is no command buffer to reclaim.
1398 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1399 * but apparently a few don't get set; catch them here. */
1400 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1401 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1402 (pkt->hdr.cmd != REPLY_RX) &&
1403 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1404 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1405 (pkt->hdr.cmd != REPLY_TX);
1406
1407 /* Based on type of command response or notification,
1408 * handle those that need handling via function in
1409 * rx_handlers table. See iwl4965_setup_rx_handlers() */
1410 if (priv->rx_handlers[pkt->hdr.cmd]) {
1411 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1412 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1413 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1414 } else {
1415 /* No handling needed */
1416 IWL_DEBUG(IWL_DL_RX,
1417 "r %d i %d No handler needed for %s, 0x%02x\n",
1418 r, i, get_cmd_string(pkt->hdr.cmd),
1419 pkt->hdr.cmd);
1420 }
1421
1422 if (reclaim) {
1423 /* Invoke any callbacks, transfer the skb to caller, and
1424 * fire off the (possibly) blocking iwl_send_cmd()
1425 * as we reclaim the driver command queue */
1426 if (rxb && rxb->skb)
1427 iwl_tx_cmd_complete(priv, rxb);
1428 else
1429 IWL_WARNING("Claim null rxb?\n");
1430 }
1431
1432 /* For now we just don't re-use anything. We can tweak this
1433 * later to try and re-use notification packets and SKBs that
1434 * fail to Rx correctly */
1435 if (rxb->skb != NULL) {
1436 priv->alloc_rxb_skb--;
1437 dev_kfree_skb_any(rxb->skb);
1438 rxb->skb = NULL;
1439 }
1440
1441 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
1442 priv->hw_params.rx_buf_size,
1443 PCI_DMA_FROMDEVICE);
1444 spin_lock_irqsave(&rxq->lock, flags);
1445 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1446 spin_unlock_irqrestore(&rxq->lock, flags);
1447 i = (i + 1) & RX_QUEUE_MASK;
1448 /* If there are a lot of unused frames,
1449 * restock the Rx queue so ucode wont assert. */
1450 if (fill_rx) {
1451 count++;
1452 if (count >= 8) {
1453 priv->rxq.read = i;
1454 __iwl_rx_replenish(priv);
1455 count = 0;
1456 }
1457 }
1458 }
1459
1460 /* Backtrack one entry */
1461 priv->rxq.read = i;
1462 iwl_rx_queue_restock(priv);
1463 }
1464
1465 #ifdef CONFIG_IWLWIFI_DEBUG
1466 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
1467 {
1468 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1469 DECLARE_MAC_BUF(mac);
1470
1471 IWL_DEBUG_RADIO("RX CONFIG:\n");
1472 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1473 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1474 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1475 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1476 le32_to_cpu(rxon->filter_flags));
1477 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1478 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1479 rxon->ofdm_basic_rates);
1480 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1481 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
1482 print_mac(mac, rxon->node_addr));
1483 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
1484 print_mac(mac, rxon->bssid_addr));
1485 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1486 }
1487 #endif
1488
1489 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
1490 {
1491 IWL_DEBUG_ISR("Enabling interrupts\n");
1492 set_bit(STATUS_INT_ENABLED, &priv->status);
1493 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1494 }
1495
1496 /* call this function to flush any scheduled tasklet */
1497 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1498 {
1499 /* wait to make sure we flush pedding tasklet*/
1500 synchronize_irq(priv->pci_dev->irq);
1501 tasklet_kill(&priv->irq_tasklet);
1502 }
1503
1504 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
1505 {
1506 clear_bit(STATUS_INT_ENABLED, &priv->status);
1507
1508 /* disable interrupts from uCode/NIC to host */
1509 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1510
1511 /* acknowledge/clear/reset any interrupts still pending
1512 * from uCode or flow handler (Rx/Tx DMA) */
1513 iwl_write32(priv, CSR_INT, 0xffffffff);
1514 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1515 IWL_DEBUG_ISR("Disabled interrupts\n");
1516 }
1517
1518
1519 /**
1520 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
1521 */
1522 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
1523 {
1524 /* Set the FW error flag -- cleared on iwl4965_down */
1525 set_bit(STATUS_FW_ERROR, &priv->status);
1526
1527 /* Cancel currently queued command. */
1528 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1529
1530 #ifdef CONFIG_IWLWIFI_DEBUG
1531 if (priv->debug_level & IWL_DL_FW_ERRORS) {
1532 iwl_dump_nic_error_log(priv);
1533 iwl_dump_nic_event_log(priv);
1534 iwl4965_print_rx_config_cmd(priv);
1535 }
1536 #endif
1537
1538 wake_up_interruptible(&priv->wait_command_queue);
1539
1540 /* Keep the restart process from trying to send host
1541 * commands by clearing the INIT status bit */
1542 clear_bit(STATUS_READY, &priv->status);
1543
1544 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1545 IWL_DEBUG(IWL_DL_FW_ERRORS,
1546 "Restarting adapter due to uCode error.\n");
1547
1548 if (iwl_is_associated(priv)) {
1549 memcpy(&priv->recovery_rxon, &priv->active_rxon,
1550 sizeof(priv->recovery_rxon));
1551 priv->error_recovering = 1;
1552 }
1553 if (priv->cfg->mod_params->restart_fw)
1554 queue_work(priv->workqueue, &priv->restart);
1555 }
1556 }
1557
1558 static void iwl4965_error_recovery(struct iwl_priv *priv)
1559 {
1560 unsigned long flags;
1561
1562 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1563 sizeof(priv->staging_rxon));
1564 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1565 iwl4965_commit_rxon(priv);
1566
1567 iwl_rxon_add_station(priv, priv->bssid, 1);
1568
1569 spin_lock_irqsave(&priv->lock, flags);
1570 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1571 priv->error_recovering = 0;
1572 spin_unlock_irqrestore(&priv->lock, flags);
1573 }
1574
1575 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
1576 {
1577 u32 inta, handled = 0;
1578 u32 inta_fh;
1579 unsigned long flags;
1580 #ifdef CONFIG_IWLWIFI_DEBUG
1581 u32 inta_mask;
1582 #endif
1583
1584 spin_lock_irqsave(&priv->lock, flags);
1585
1586 /* Ack/clear/reset pending uCode interrupts.
1587 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1588 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1589 inta = iwl_read32(priv, CSR_INT);
1590 iwl_write32(priv, CSR_INT, inta);
1591
1592 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1593 * Any new interrupts that happen after this, either while we're
1594 * in this tasklet, or later, will show up in next ISR/tasklet. */
1595 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1596 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1597
1598 #ifdef CONFIG_IWLWIFI_DEBUG
1599 if (priv->debug_level & IWL_DL_ISR) {
1600 /* just for debug */
1601 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1602 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1603 inta, inta_mask, inta_fh);
1604 }
1605 #endif
1606
1607 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1608 * atomic, make sure that inta covers all the interrupts that
1609 * we've discovered, even if FH interrupt came in just after
1610 * reading CSR_INT. */
1611 if (inta_fh & CSR49_FH_INT_RX_MASK)
1612 inta |= CSR_INT_BIT_FH_RX;
1613 if (inta_fh & CSR49_FH_INT_TX_MASK)
1614 inta |= CSR_INT_BIT_FH_TX;
1615
1616 /* Now service all interrupt bits discovered above. */
1617 if (inta & CSR_INT_BIT_HW_ERR) {
1618 IWL_ERROR("Microcode HW error detected. Restarting.\n");
1619
1620 /* Tell the device to stop sending interrupts */
1621 iwl4965_disable_interrupts(priv);
1622
1623 iwl4965_irq_handle_error(priv);
1624
1625 handled |= CSR_INT_BIT_HW_ERR;
1626
1627 spin_unlock_irqrestore(&priv->lock, flags);
1628
1629 return;
1630 }
1631
1632 #ifdef CONFIG_IWLWIFI_DEBUG
1633 if (priv->debug_level & (IWL_DL_ISR)) {
1634 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1635 if (inta & CSR_INT_BIT_SCD)
1636 IWL_DEBUG_ISR("Scheduler finished to transmit "
1637 "the frame/frames.\n");
1638
1639 /* Alive notification via Rx interrupt will do the real work */
1640 if (inta & CSR_INT_BIT_ALIVE)
1641 IWL_DEBUG_ISR("Alive interrupt\n");
1642 }
1643 #endif
1644 /* Safely ignore these bits for debug checks below */
1645 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1646
1647 /* HW RF KILL switch toggled */
1648 if (inta & CSR_INT_BIT_RF_KILL) {
1649 int hw_rf_kill = 0;
1650 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1651 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1652 hw_rf_kill = 1;
1653
1654 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1655 hw_rf_kill ? "disable radio":"enable radio");
1656
1657 /* driver only loads ucode once setting the interface up.
1658 * the driver as well won't allow loading if RFKILL is set
1659 * therefore no need to restart the driver from this handler
1660 */
1661 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
1662 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1663
1664 handled |= CSR_INT_BIT_RF_KILL;
1665 }
1666
1667 /* Chip got too hot and stopped itself */
1668 if (inta & CSR_INT_BIT_CT_KILL) {
1669 IWL_ERROR("Microcode CT kill error detected.\n");
1670 handled |= CSR_INT_BIT_CT_KILL;
1671 }
1672
1673 /* Error detected by uCode */
1674 if (inta & CSR_INT_BIT_SW_ERR) {
1675 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
1676 inta);
1677 iwl4965_irq_handle_error(priv);
1678 handled |= CSR_INT_BIT_SW_ERR;
1679 }
1680
1681 /* uCode wakes up after power-down sleep */
1682 if (inta & CSR_INT_BIT_WAKEUP) {
1683 IWL_DEBUG_ISR("Wakeup interrupt\n");
1684 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1685 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1686 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1687 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1688 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1689 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1690 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1691
1692 handled |= CSR_INT_BIT_WAKEUP;
1693 }
1694
1695 /* All uCode command responses, including Tx command responses,
1696 * Rx "responses" (frame-received notification), and other
1697 * notifications from uCode come through here*/
1698 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1699 iwl_rx_handle(priv);
1700 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1701 }
1702
1703 if (inta & CSR_INT_BIT_FH_TX) {
1704 IWL_DEBUG_ISR("Tx interrupt\n");
1705 handled |= CSR_INT_BIT_FH_TX;
1706 /* FH finished to write, send event */
1707 priv->ucode_write_complete = 1;
1708 wake_up_interruptible(&priv->wait_command_queue);
1709 }
1710
1711 if (inta & ~handled)
1712 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1713
1714 if (inta & ~CSR_INI_SET_MASK) {
1715 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1716 inta & ~CSR_INI_SET_MASK);
1717 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
1718 }
1719
1720 /* Re-enable all interrupts */
1721 /* only Re-enable if diabled by irq */
1722 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1723 iwl4965_enable_interrupts(priv);
1724
1725 #ifdef CONFIG_IWLWIFI_DEBUG
1726 if (priv->debug_level & (IWL_DL_ISR)) {
1727 inta = iwl_read32(priv, CSR_INT);
1728 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1729 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1730 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1731 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1732 }
1733 #endif
1734 spin_unlock_irqrestore(&priv->lock, flags);
1735 }
1736
1737 static irqreturn_t iwl4965_isr(int irq, void *data)
1738 {
1739 struct iwl_priv *priv = data;
1740 u32 inta, inta_mask;
1741 u32 inta_fh;
1742 if (!priv)
1743 return IRQ_NONE;
1744
1745 spin_lock(&priv->lock);
1746
1747 /* Disable (but don't clear!) interrupts here to avoid
1748 * back-to-back ISRs and sporadic interrupts from our NIC.
1749 * If we have something to service, the tasklet will re-enable ints.
1750 * If we *don't* have something, we'll re-enable before leaving here. */
1751 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
1752 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1753
1754 /* Discover which interrupts are active/pending */
1755 inta = iwl_read32(priv, CSR_INT);
1756 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1757
1758 /* Ignore interrupt if there's nothing in NIC to service.
1759 * This may be due to IRQ shared with another device,
1760 * or due to sporadic interrupts thrown from our NIC. */
1761 if (!inta && !inta_fh) {
1762 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1763 goto none;
1764 }
1765
1766 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1767 /* Hardware disappeared. It might have already raised
1768 * an interrupt */
1769 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1770 goto unplugged;
1771 }
1772
1773 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1774 inta, inta_mask, inta_fh);
1775
1776 inta &= ~CSR_INT_BIT_SCD;
1777
1778 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
1779 if (likely(inta || inta_fh))
1780 tasklet_schedule(&priv->irq_tasklet);
1781
1782 unplugged:
1783 spin_unlock(&priv->lock);
1784 return IRQ_HANDLED;
1785
1786 none:
1787 /* re-enable interrupts here since we don't have anything to service. */
1788 /* only Re-enable if diabled by irq */
1789 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1790 iwl4965_enable_interrupts(priv);
1791 spin_unlock(&priv->lock);
1792 return IRQ_NONE;
1793 }
1794
1795 /******************************************************************************
1796 *
1797 * uCode download functions
1798 *
1799 ******************************************************************************/
1800
1801 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
1802 {
1803 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1804 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1805 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1806 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1807 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1808 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1809 }
1810
1811 static void iwl4965_nic_start(struct iwl_priv *priv)
1812 {
1813 /* Remove all resets to allow NIC to operate */
1814 iwl_write32(priv, CSR_RESET, 0);
1815 }
1816
1817
1818 /**
1819 * iwl4965_read_ucode - Read uCode images from disk file.
1820 *
1821 * Copy into buffers for card to fetch via bus-mastering
1822 */
1823 static int iwl4965_read_ucode(struct iwl_priv *priv)
1824 {
1825 struct iwl_ucode *ucode;
1826 int ret;
1827 const struct firmware *ucode_raw;
1828 const char *name = priv->cfg->fw_name;
1829 u8 *src;
1830 size_t len;
1831 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
1832
1833 /* Ask kernel firmware_class module to get the boot firmware off disk.
1834 * request_firmware() is synchronous, file is in memory on return. */
1835 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
1836 if (ret < 0) {
1837 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1838 name, ret);
1839 goto error;
1840 }
1841
1842 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1843 name, ucode_raw->size);
1844
1845 /* Make sure that we got at least our header! */
1846 if (ucode_raw->size < sizeof(*ucode)) {
1847 IWL_ERROR("File size way too small!\n");
1848 ret = -EINVAL;
1849 goto err_release;
1850 }
1851
1852 /* Data from ucode file: header followed by uCode images */
1853 ucode = (void *)ucode_raw->data;
1854
1855 ver = le32_to_cpu(ucode->ver);
1856 inst_size = le32_to_cpu(ucode->inst_size);
1857 data_size = le32_to_cpu(ucode->data_size);
1858 init_size = le32_to_cpu(ucode->init_size);
1859 init_data_size = le32_to_cpu(ucode->init_data_size);
1860 boot_size = le32_to_cpu(ucode->boot_size);
1861
1862 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
1863 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1864 inst_size);
1865 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1866 data_size);
1867 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1868 init_size);
1869 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1870 init_data_size);
1871 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1872 boot_size);
1873
1874 /* Verify size of file vs. image size info in file's header */
1875 if (ucode_raw->size < sizeof(*ucode) +
1876 inst_size + data_size + init_size +
1877 init_data_size + boot_size) {
1878
1879 IWL_DEBUG_INFO("uCode file size %d too small\n",
1880 (int)ucode_raw->size);
1881 ret = -EINVAL;
1882 goto err_release;
1883 }
1884
1885 /* Verify that uCode images will fit in card's SRAM */
1886 if (inst_size > priv->hw_params.max_inst_size) {
1887 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1888 inst_size);
1889 ret = -EINVAL;
1890 goto err_release;
1891 }
1892
1893 if (data_size > priv->hw_params.max_data_size) {
1894 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1895 data_size);
1896 ret = -EINVAL;
1897 goto err_release;
1898 }
1899 if (init_size > priv->hw_params.max_inst_size) {
1900 IWL_DEBUG_INFO
1901 ("uCode init instr len %d too large to fit in\n",
1902 init_size);
1903 ret = -EINVAL;
1904 goto err_release;
1905 }
1906 if (init_data_size > priv->hw_params.max_data_size) {
1907 IWL_DEBUG_INFO
1908 ("uCode init data len %d too large to fit in\n",
1909 init_data_size);
1910 ret = -EINVAL;
1911 goto err_release;
1912 }
1913 if (boot_size > priv->hw_params.max_bsm_size) {
1914 IWL_DEBUG_INFO
1915 ("uCode boot instr len %d too large to fit in\n",
1916 boot_size);
1917 ret = -EINVAL;
1918 goto err_release;
1919 }
1920
1921 /* Allocate ucode buffers for card's bus-master loading ... */
1922
1923 /* Runtime instructions and 2 copies of data:
1924 * 1) unmodified from disk
1925 * 2) backup cache for save/restore during power-downs */
1926 priv->ucode_code.len = inst_size;
1927 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1928
1929 priv->ucode_data.len = data_size;
1930 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1931
1932 priv->ucode_data_backup.len = data_size;
1933 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1934
1935 /* Initialization instructions and data */
1936 if (init_size && init_data_size) {
1937 priv->ucode_init.len = init_size;
1938 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1939
1940 priv->ucode_init_data.len = init_data_size;
1941 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1942
1943 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1944 goto err_pci_alloc;
1945 }
1946
1947 /* Bootstrap (instructions only, no data) */
1948 if (boot_size) {
1949 priv->ucode_boot.len = boot_size;
1950 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1951
1952 if (!priv->ucode_boot.v_addr)
1953 goto err_pci_alloc;
1954 }
1955
1956 /* Copy images into buffers for card's bus-master reads ... */
1957
1958 /* Runtime instructions (first block of data in file) */
1959 src = &ucode->data[0];
1960 len = priv->ucode_code.len;
1961 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1962 memcpy(priv->ucode_code.v_addr, src, len);
1963 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1964 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1965
1966 /* Runtime data (2nd block)
1967 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
1968 src = &ucode->data[inst_size];
1969 len = priv->ucode_data.len;
1970 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1971 memcpy(priv->ucode_data.v_addr, src, len);
1972 memcpy(priv->ucode_data_backup.v_addr, src, len);
1973
1974 /* Initialization instructions (3rd block) */
1975 if (init_size) {
1976 src = &ucode->data[inst_size + data_size];
1977 len = priv->ucode_init.len;
1978 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1979 len);
1980 memcpy(priv->ucode_init.v_addr, src, len);
1981 }
1982
1983 /* Initialization data (4th block) */
1984 if (init_data_size) {
1985 src = &ucode->data[inst_size + data_size + init_size];
1986 len = priv->ucode_init_data.len;
1987 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1988 len);
1989 memcpy(priv->ucode_init_data.v_addr, src, len);
1990 }
1991
1992 /* Bootstrap instructions (5th block) */
1993 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1994 len = priv->ucode_boot.len;
1995 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1996 memcpy(priv->ucode_boot.v_addr, src, len);
1997
1998 /* We have our copies now, allow OS release its copies */
1999 release_firmware(ucode_raw);
2000 return 0;
2001
2002 err_pci_alloc:
2003 IWL_ERROR("failed to allocate pci memory\n");
2004 ret = -ENOMEM;
2005 iwl4965_dealloc_ucode_pci(priv);
2006
2007 err_release:
2008 release_firmware(ucode_raw);
2009
2010 error:
2011 return ret;
2012 }
2013
2014 /**
2015 * iwl_alive_start - called after REPLY_ALIVE notification received
2016 * from protocol/runtime uCode (initialization uCode's
2017 * Alive gets handled by iwl_init_alive_start()).
2018 */
2019 static void iwl_alive_start(struct iwl_priv *priv)
2020 {
2021 int ret = 0;
2022
2023 IWL_DEBUG_INFO("Runtime Alive received.\n");
2024
2025 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2026 /* We had an error bringing up the hardware, so take it
2027 * all the way back down so we can try again */
2028 IWL_DEBUG_INFO("Alive failed.\n");
2029 goto restart;
2030 }
2031
2032 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2033 * This is a paranoid check, because we would not have gotten the
2034 * "runtime" alive if code weren't properly loaded. */
2035 if (iwl_verify_ucode(priv)) {
2036 /* Runtime instruction load was bad;
2037 * take it all the way back down so we can try again */
2038 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
2039 goto restart;
2040 }
2041
2042 iwl_clear_stations_table(priv);
2043 ret = priv->cfg->ops->lib->alive_notify(priv);
2044 if (ret) {
2045 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
2046 ret);
2047 goto restart;
2048 }
2049
2050 /* After the ALIVE response, we can send host commands to 4965 uCode */
2051 set_bit(STATUS_ALIVE, &priv->status);
2052
2053 if (iwl_is_rfkill(priv))
2054 return;
2055
2056 ieee80211_wake_queues(priv->hw);
2057
2058 priv->active_rate = priv->rates_mask;
2059 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2060
2061 if (iwl_is_associated(priv)) {
2062 struct iwl_rxon_cmd *active_rxon =
2063 (struct iwl_rxon_cmd *)&priv->active_rxon;
2064
2065 memcpy(&priv->staging_rxon, &priv->active_rxon,
2066 sizeof(priv->staging_rxon));
2067 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2068 } else {
2069 /* Initialize our rx_config data */
2070 iwl4965_connection_init_rx_config(priv);
2071 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2072 }
2073
2074 /* Configure Bluetooth device coexistence support */
2075 iwl4965_send_bt_config(priv);
2076
2077 iwl_reset_run_time_calib(priv);
2078
2079 /* Configure the adapter for unassociated operation */
2080 iwl4965_commit_rxon(priv);
2081
2082 /* At this point, the NIC is initialized and operational */
2083 iwl_rf_kill_ct_config(priv);
2084
2085 iwl_leds_register(priv);
2086
2087 IWL_DEBUG_INFO("ALIVE processing complete.\n");
2088 set_bit(STATUS_READY, &priv->status);
2089 wake_up_interruptible(&priv->wait_command_queue);
2090
2091 if (priv->error_recovering)
2092 iwl4965_error_recovery(priv);
2093
2094 iwl_power_update_mode(priv, 1);
2095 ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2096
2097 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2098 iwl4965_set_mode(priv, priv->iw_mode);
2099
2100 return;
2101
2102 restart:
2103 queue_work(priv->workqueue, &priv->restart);
2104 }
2105
2106 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2107
2108 static void __iwl4965_down(struct iwl_priv *priv)
2109 {
2110 unsigned long flags;
2111 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2112
2113 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2114
2115 if (!exit_pending)
2116 set_bit(STATUS_EXIT_PENDING, &priv->status);
2117
2118 iwl_leds_unregister(priv);
2119
2120 iwl_clear_stations_table(priv);
2121
2122 /* Unblock any waiting calls */
2123 wake_up_interruptible_all(&priv->wait_command_queue);
2124
2125 /* Wipe out the EXIT_PENDING status bit if we are not actually
2126 * exiting the module */
2127 if (!exit_pending)
2128 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2129
2130 /* stop and reset the on-board processor */
2131 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2132
2133 /* tell the device to stop sending interrupts */
2134 spin_lock_irqsave(&priv->lock, flags);
2135 iwl4965_disable_interrupts(priv);
2136 spin_unlock_irqrestore(&priv->lock, flags);
2137 iwl_synchronize_irq(priv);
2138
2139 if (priv->mac80211_registered)
2140 ieee80211_stop_queues(priv->hw);
2141
2142 /* If we have not previously called iwl4965_init() then
2143 * clear all bits but the RF Kill and SUSPEND bits and return */
2144 if (!iwl_is_init(priv)) {
2145 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2146 STATUS_RF_KILL_HW |
2147 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2148 STATUS_RF_KILL_SW |
2149 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2150 STATUS_GEO_CONFIGURED |
2151 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2152 STATUS_IN_SUSPEND |
2153 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2154 STATUS_EXIT_PENDING;
2155 goto exit;
2156 }
2157
2158 /* ...otherwise clear out all the status bits but the RF Kill and
2159 * SUSPEND bits and continue taking the NIC down. */
2160 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2161 STATUS_RF_KILL_HW |
2162 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2163 STATUS_RF_KILL_SW |
2164 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2165 STATUS_GEO_CONFIGURED |
2166 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2167 STATUS_IN_SUSPEND |
2168 test_bit(STATUS_FW_ERROR, &priv->status) <<
2169 STATUS_FW_ERROR |
2170 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2171 STATUS_EXIT_PENDING;
2172
2173 spin_lock_irqsave(&priv->lock, flags);
2174 iwl_clear_bit(priv, CSR_GP_CNTRL,
2175 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2176 spin_unlock_irqrestore(&priv->lock, flags);
2177
2178 iwl_txq_ctx_stop(priv);
2179 iwl_rxq_stop(priv);
2180
2181 spin_lock_irqsave(&priv->lock, flags);
2182 if (!iwl_grab_nic_access(priv)) {
2183 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2184 APMG_CLK_VAL_DMA_CLK_RQT);
2185 iwl_release_nic_access(priv);
2186 }
2187 spin_unlock_irqrestore(&priv->lock, flags);
2188
2189 udelay(5);
2190
2191 /* FIXME: apm_ops.suspend(priv) */
2192 priv->cfg->ops->lib->apm_ops.reset(priv);
2193 priv->cfg->ops->lib->free_shared_mem(priv);
2194
2195 exit:
2196 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2197
2198 if (priv->ibss_beacon)
2199 dev_kfree_skb(priv->ibss_beacon);
2200 priv->ibss_beacon = NULL;
2201
2202 /* clear out any free frames */
2203 iwl_clear_free_frames(priv);
2204 }
2205
2206 static void iwl4965_down(struct iwl_priv *priv)
2207 {
2208 mutex_lock(&priv->mutex);
2209 __iwl4965_down(priv);
2210 mutex_unlock(&priv->mutex);
2211
2212 iwl_cancel_deferred_work(priv);
2213 }
2214
2215 #define MAX_HW_RESTARTS 5
2216
2217 static int __iwl4965_up(struct iwl_priv *priv)
2218 {
2219 int i;
2220 int ret;
2221
2222 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2223 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2224 return -EIO;
2225 }
2226
2227 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2228 IWL_ERROR("ucode not available for device bringup\n");
2229 return -EIO;
2230 }
2231
2232 /* If platform's RF_KILL switch is NOT set to KILL */
2233 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2234 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2235 else
2236 set_bit(STATUS_RF_KILL_HW, &priv->status);
2237
2238 if (iwl_is_rfkill(priv)) {
2239 iwl4965_enable_interrupts(priv);
2240 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2241 test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2242 return 0;
2243 }
2244
2245 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2246
2247 ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
2248 if (ret) {
2249 IWL_ERROR("Unable to allocate shared memory\n");
2250 return ret;
2251 }
2252
2253 ret = iwl_hw_nic_init(priv);
2254 if (ret) {
2255 IWL_ERROR("Unable to init nic\n");
2256 return ret;
2257 }
2258
2259 /* make sure rfkill handshake bits are cleared */
2260 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2261 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2262 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2263
2264 /* clear (again), then enable host interrupts */
2265 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2266 iwl4965_enable_interrupts(priv);
2267
2268 /* really make sure rfkill handshake bits are cleared */
2269 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2270 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2271
2272 /* Copy original ucode data image from disk into backup cache.
2273 * This will be used to initialize the on-board processor's
2274 * data SRAM for a clean start when the runtime program first loads. */
2275 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2276 priv->ucode_data.len);
2277
2278 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2279
2280 iwl_clear_stations_table(priv);
2281
2282 /* load bootstrap state machine,
2283 * load bootstrap program into processor's memory,
2284 * prepare to load the "initialize" uCode */
2285 ret = priv->cfg->ops->lib->load_ucode(priv);
2286
2287 if (ret) {
2288 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2289 continue;
2290 }
2291
2292 /* Clear out the uCode error bit if it is set */
2293 clear_bit(STATUS_FW_ERROR, &priv->status);
2294
2295 /* start card; "initialize" will load runtime ucode */
2296 iwl4965_nic_start(priv);
2297
2298 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2299
2300 return 0;
2301 }
2302
2303 set_bit(STATUS_EXIT_PENDING, &priv->status);
2304 __iwl4965_down(priv);
2305 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2306
2307 /* tried to restart and config the device for as long as our
2308 * patience could withstand */
2309 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2310 return -EIO;
2311 }
2312
2313
2314 /*****************************************************************************
2315 *
2316 * Workqueue callbacks
2317 *
2318 *****************************************************************************/
2319
2320 static void iwl_bg_init_alive_start(struct work_struct *data)
2321 {
2322 struct iwl_priv *priv =
2323 container_of(data, struct iwl_priv, init_alive_start.work);
2324
2325 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2326 return;
2327
2328 mutex_lock(&priv->mutex);
2329 priv->cfg->ops->lib->init_alive_start(priv);
2330 mutex_unlock(&priv->mutex);
2331 }
2332
2333 static void iwl_bg_alive_start(struct work_struct *data)
2334 {
2335 struct iwl_priv *priv =
2336 container_of(data, struct iwl_priv, alive_start.work);
2337
2338 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2339 return;
2340
2341 mutex_lock(&priv->mutex);
2342 iwl_alive_start(priv);
2343 mutex_unlock(&priv->mutex);
2344 }
2345
2346 static void iwl4965_bg_rf_kill(struct work_struct *work)
2347 {
2348 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2349
2350 wake_up_interruptible(&priv->wait_command_queue);
2351
2352 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2353 return;
2354
2355 mutex_lock(&priv->mutex);
2356
2357 if (!iwl_is_rfkill(priv)) {
2358 IWL_DEBUG(IWL_DL_RF_KILL,
2359 "HW and/or SW RF Kill no longer active, restarting "
2360 "device\n");
2361 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2362 queue_work(priv->workqueue, &priv->restart);
2363 } else {
2364 /* make sure mac80211 stop sending Tx frame */
2365 if (priv->mac80211_registered)
2366 ieee80211_stop_queues(priv->hw);
2367
2368 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2369 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2370 "disabled by SW switch\n");
2371 else
2372 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2373 "Kill switch must be turned off for "
2374 "wireless networking to work.\n");
2375 }
2376 mutex_unlock(&priv->mutex);
2377 iwl_rfkill_set_hw_state(priv);
2378 }
2379
2380 static void iwl4965_bg_set_monitor(struct work_struct *work)
2381 {
2382 struct iwl_priv *priv = container_of(work,
2383 struct iwl_priv, set_monitor);
2384 int ret;
2385
2386 IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
2387
2388 mutex_lock(&priv->mutex);
2389
2390 ret = iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR);
2391
2392 if (ret) {
2393 if (ret == -EAGAIN)
2394 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
2395 else
2396 IWL_ERROR("iwl4965_set_mode() failed ret = %d\n", ret);
2397 }
2398
2399 mutex_unlock(&priv->mutex);
2400 }
2401
2402 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2403 {
2404 struct iwl_priv *priv = container_of(work, struct iwl_priv,
2405 run_time_calib_work);
2406
2407 mutex_lock(&priv->mutex);
2408
2409 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2410 test_bit(STATUS_SCANNING, &priv->status)) {
2411 mutex_unlock(&priv->mutex);
2412 return;
2413 }
2414
2415 if (priv->start_calib) {
2416 iwl_chain_noise_calibration(priv, &priv->statistics);
2417
2418 iwl_sensitivity_calibration(priv, &priv->statistics);
2419 }
2420
2421 mutex_unlock(&priv->mutex);
2422 return;
2423 }
2424
2425 static void iwl4965_bg_up(struct work_struct *data)
2426 {
2427 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2428
2429 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2430 return;
2431
2432 mutex_lock(&priv->mutex);
2433 __iwl4965_up(priv);
2434 mutex_unlock(&priv->mutex);
2435 iwl_rfkill_set_hw_state(priv);
2436 }
2437
2438 static void iwl4965_bg_restart(struct work_struct *data)
2439 {
2440 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2441
2442 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2443 return;
2444
2445 iwl4965_down(priv);
2446 queue_work(priv->workqueue, &priv->up);
2447 }
2448
2449 static void iwl4965_bg_rx_replenish(struct work_struct *data)
2450 {
2451 struct iwl_priv *priv =
2452 container_of(data, struct iwl_priv, rx_replenish);
2453
2454 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2455 return;
2456
2457 mutex_lock(&priv->mutex);
2458 iwl_rx_replenish(priv);
2459 mutex_unlock(&priv->mutex);
2460 }
2461
2462 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2463
2464 static void iwl4965_post_associate(struct iwl_priv *priv)
2465 {
2466 struct ieee80211_conf *conf = NULL;
2467 int ret = 0;
2468 DECLARE_MAC_BUF(mac);
2469 unsigned long flags;
2470
2471 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2472 IWL_ERROR("%s Should not be called in AP mode\n", __func__);
2473 return;
2474 }
2475
2476 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
2477 priv->assoc_id,
2478 print_mac(mac, priv->active_rxon.bssid_addr));
2479
2480
2481 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2482 return;
2483
2484
2485 if (!priv->vif || !priv->is_open)
2486 return;
2487
2488 iwl_scan_cancel_timeout(priv, 200);
2489
2490 conf = ieee80211_get_hw_conf(priv->hw);
2491
2492 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2493 iwl4965_commit_rxon(priv);
2494
2495 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2496 iwl4965_setup_rxon_timing(priv);
2497 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2498 sizeof(priv->rxon_timing), &priv->rxon_timing);
2499 if (ret)
2500 IWL_WARNING("REPLY_RXON_TIMING failed - "
2501 "Attempting to continue.\n");
2502
2503 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2504
2505 if (priv->current_ht_config.is_ht)
2506 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2507
2508 iwl_set_rxon_chain(priv);
2509 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2510
2511 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2512 priv->assoc_id, priv->beacon_int);
2513
2514 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2515 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2516 else
2517 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2518
2519 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2520 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2521 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2522 else
2523 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2524
2525 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2526 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2527
2528 }
2529
2530 iwl4965_commit_rxon(priv);
2531
2532 switch (priv->iw_mode) {
2533 case IEEE80211_IF_TYPE_STA:
2534 break;
2535
2536 case IEEE80211_IF_TYPE_IBSS:
2537
2538 /* assume default assoc id */
2539 priv->assoc_id = 1;
2540
2541 iwl_rxon_add_station(priv, priv->bssid, 0);
2542 iwl4965_send_beacon_cmd(priv);
2543
2544 break;
2545
2546 default:
2547 IWL_ERROR("%s Should not be called in %d mode\n",
2548 __func__, priv->iw_mode);
2549 break;
2550 }
2551
2552 /* Enable Rx differential gain and sensitivity calibrations */
2553 iwl_chain_noise_reset(priv);
2554 priv->start_calib = 1;
2555
2556 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2557 priv->assoc_station_added = 1;
2558
2559 spin_lock_irqsave(&priv->lock, flags);
2560 iwl_activate_qos(priv, 0);
2561 spin_unlock_irqrestore(&priv->lock, flags);
2562
2563 iwl_power_update_mode(priv, 0);
2564 /* we have just associated, don't start scan too early */
2565 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
2566 }
2567
2568 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
2569
2570 static void iwl_bg_scan_completed(struct work_struct *work)
2571 {
2572 struct iwl_priv *priv =
2573 container_of(work, struct iwl_priv, scan_completed);
2574
2575 IWL_DEBUG_SCAN("SCAN complete scan\n");
2576
2577 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2578 return;
2579
2580 if (test_bit(STATUS_CONF_PENDING, &priv->status))
2581 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
2582
2583 ieee80211_scan_completed(priv->hw);
2584
2585 /* Since setting the TXPOWER may have been deferred while
2586 * performing the scan, fire one off */
2587 mutex_lock(&priv->mutex);
2588 iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
2589 mutex_unlock(&priv->mutex);
2590 }
2591
2592 /*****************************************************************************
2593 *
2594 * mac80211 entry point functions
2595 *
2596 *****************************************************************************/
2597
2598 #define UCODE_READY_TIMEOUT (4 * HZ)
2599
2600 static int iwl4965_mac_start(struct ieee80211_hw *hw)
2601 {
2602 struct iwl_priv *priv = hw->priv;
2603 int ret;
2604 u16 pci_cmd;
2605
2606 IWL_DEBUG_MAC80211("enter\n");
2607
2608 if (pci_enable_device(priv->pci_dev)) {
2609 IWL_ERROR("Fail to pci_enable_device\n");
2610 return -ENODEV;
2611 }
2612 pci_restore_state(priv->pci_dev);
2613 pci_enable_msi(priv->pci_dev);
2614
2615 /* enable interrupts if needed: hw bug w/a */
2616 pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
2617 if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
2618 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
2619 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
2620 }
2621
2622 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
2623 DRV_NAME, priv);
2624 if (ret) {
2625 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2626 goto out_disable_msi;
2627 }
2628
2629 /* we should be verifying the device is ready to be opened */
2630 mutex_lock(&priv->mutex);
2631
2632 memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2633 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2634 * ucode filename and max sizes are card-specific. */
2635
2636 if (!priv->ucode_code.len) {
2637 ret = iwl4965_read_ucode(priv);
2638 if (ret) {
2639 IWL_ERROR("Could not read microcode: %d\n", ret);
2640 mutex_unlock(&priv->mutex);
2641 goto out_release_irq;
2642 }
2643 }
2644
2645 ret = __iwl4965_up(priv);
2646
2647 mutex_unlock(&priv->mutex);
2648
2649 iwl_rfkill_set_hw_state(priv);
2650
2651 if (ret)
2652 goto out_release_irq;
2653
2654 if (iwl_is_rfkill(priv))
2655 goto out;
2656
2657 IWL_DEBUG_INFO("Start UP work done.\n");
2658
2659 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2660 return 0;
2661
2662 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2663 * mac80211 will not be run successfully. */
2664 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2665 test_bit(STATUS_READY, &priv->status),
2666 UCODE_READY_TIMEOUT);
2667 if (!ret) {
2668 if (!test_bit(STATUS_READY, &priv->status)) {
2669 IWL_ERROR("START_ALIVE timeout after %dms.\n",
2670 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2671 ret = -ETIMEDOUT;
2672 goto out_release_irq;
2673 }
2674 }
2675
2676 out:
2677 priv->is_open = 1;
2678 IWL_DEBUG_MAC80211("leave\n");
2679 return 0;
2680
2681 out_release_irq:
2682 free_irq(priv->pci_dev->irq, priv);
2683 out_disable_msi:
2684 pci_disable_msi(priv->pci_dev);
2685 pci_disable_device(priv->pci_dev);
2686 priv->is_open = 0;
2687 IWL_DEBUG_MAC80211("leave - failed\n");
2688 return ret;
2689 }
2690
2691 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
2692 {
2693 struct iwl_priv *priv = hw->priv;
2694
2695 IWL_DEBUG_MAC80211("enter\n");
2696
2697 if (!priv->is_open) {
2698 IWL_DEBUG_MAC80211("leave - skip\n");
2699 return;
2700 }
2701
2702 priv->is_open = 0;
2703
2704 if (iwl_is_ready_rf(priv)) {
2705 /* stop mac, cancel any scan request and clear
2706 * RXON_FILTER_ASSOC_MSK BIT
2707 */
2708 mutex_lock(&priv->mutex);
2709 iwl_scan_cancel_timeout(priv, 100);
2710 mutex_unlock(&priv->mutex);
2711 }
2712
2713 iwl4965_down(priv);
2714
2715 flush_workqueue(priv->workqueue);
2716 free_irq(priv->pci_dev->irq, priv);
2717 pci_disable_msi(priv->pci_dev);
2718 pci_save_state(priv->pci_dev);
2719 pci_disable_device(priv->pci_dev);
2720
2721 IWL_DEBUG_MAC80211("leave\n");
2722 }
2723
2724 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2725 {
2726 struct iwl_priv *priv = hw->priv;
2727
2728 IWL_DEBUG_MACDUMP("enter\n");
2729
2730 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
2731 IWL_DEBUG_MAC80211("leave - monitor\n");
2732 dev_kfree_skb_any(skb);
2733 return 0;
2734 }
2735
2736 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2737 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2738
2739 if (iwl_tx_skb(priv, skb))
2740 dev_kfree_skb_any(skb);
2741
2742 IWL_DEBUG_MACDUMP("leave\n");
2743 return 0;
2744 }
2745
2746 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
2747 struct ieee80211_if_init_conf *conf)
2748 {
2749 struct iwl_priv *priv = hw->priv;
2750 unsigned long flags;
2751 DECLARE_MAC_BUF(mac);
2752
2753 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2754
2755 if (priv->vif) {
2756 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2757 return -EOPNOTSUPP;
2758 }
2759
2760 spin_lock_irqsave(&priv->lock, flags);
2761 priv->vif = conf->vif;
2762
2763 spin_unlock_irqrestore(&priv->lock, flags);
2764
2765 mutex_lock(&priv->mutex);
2766
2767 if (conf->mac_addr) {
2768 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
2769 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2770 }
2771
2772 if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
2773 /* we are not ready, will run again when ready */
2774 set_bit(STATUS_MODE_PENDING, &priv->status);
2775
2776 mutex_unlock(&priv->mutex);
2777
2778 IWL_DEBUG_MAC80211("leave\n");
2779 return 0;
2780 }
2781
2782 /**
2783 * iwl4965_mac_config - mac80211 config callback
2784 *
2785 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2786 * be set inappropriately and the driver currently sets the hardware up to
2787 * use it whenever needed.
2788 */
2789 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
2790 {
2791 struct iwl_priv *priv = hw->priv;
2792 const struct iwl_channel_info *ch_info;
2793 unsigned long flags;
2794 int ret = 0;
2795 u16 channel;
2796
2797 mutex_lock(&priv->mutex);
2798 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2799
2800 priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
2801
2802 if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2803 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2804 goto out;
2805 }
2806
2807 if (!conf->radio_enabled)
2808 iwl_radio_kill_sw_disable_radio(priv);
2809
2810 if (!iwl_is_ready(priv)) {
2811 IWL_DEBUG_MAC80211("leave - not ready\n");
2812 ret = -EIO;
2813 goto out;
2814 }
2815
2816 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2817 test_bit(STATUS_SCANNING, &priv->status))) {
2818 IWL_DEBUG_MAC80211("leave - scanning\n");
2819 set_bit(STATUS_CONF_PENDING, &priv->status);
2820 mutex_unlock(&priv->mutex);
2821 return 0;
2822 }
2823
2824 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2825 ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2826 if (!is_channel_valid(ch_info)) {
2827 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2828 ret = -EINVAL;
2829 goto out;
2830 }
2831
2832 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
2833 !is_channel_ibss(ch_info)) {
2834 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2835 conf->channel->hw_value, conf->channel->band);
2836 ret = -EINVAL;
2837 goto out;
2838 }
2839
2840 spin_lock_irqsave(&priv->lock, flags);
2841
2842
2843 /* if we are switching from ht to 2.4 clear flags
2844 * from any ht related info since 2.4 does not
2845 * support ht */
2846 if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2847 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2848 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2849 #endif
2850 )
2851 priv->staging_rxon.flags = 0;
2852
2853 iwl_set_rxon_channel(priv, conf->channel->band, channel);
2854
2855 iwl_set_flags_for_band(priv, conf->channel->band);
2856
2857 /* The list of supported rates and rate mask can be different
2858 * for each band; since the band may have changed, reset
2859 * the rate mask to what mac80211 lists */
2860 iwl4965_set_rate(priv);
2861
2862 spin_unlock_irqrestore(&priv->lock, flags);
2863
2864 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2865 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2866 iwl4965_hw_channel_switch(priv, conf->channel);
2867 goto out;
2868 }
2869 #endif
2870
2871 if (!conf->radio_enabled) {
2872 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2873 goto out;
2874 }
2875
2876 if (iwl_is_rfkill(priv)) {
2877 IWL_DEBUG_MAC80211("leave - RF kill\n");
2878 ret = -EIO;
2879 goto out;
2880 }
2881
2882 IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2883 priv->tx_power_user_lmt, conf->power_level);
2884
2885 iwl_set_tx_power(priv, conf->power_level, false);
2886
2887 iwl4965_set_rate(priv);
2888
2889 if (memcmp(&priv->active_rxon,
2890 &priv->staging_rxon, sizeof(priv->staging_rxon)))
2891 iwl4965_commit_rxon(priv);
2892 else
2893 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2894
2895 IWL_DEBUG_MAC80211("leave\n");
2896
2897 out:
2898 clear_bit(STATUS_CONF_PENDING, &priv->status);
2899 mutex_unlock(&priv->mutex);
2900 return ret;
2901 }
2902
2903 static void iwl4965_config_ap(struct iwl_priv *priv)
2904 {
2905 int ret = 0;
2906 unsigned long flags;
2907
2908 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2909 return;
2910
2911 /* The following should be done only at AP bring up */
2912 if (!(iwl_is_associated(priv))) {
2913
2914 /* RXON - unassoc (to set timing command) */
2915 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2916 iwl4965_commit_rxon(priv);
2917
2918 /* RXON Timing */
2919 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2920 iwl4965_setup_rxon_timing(priv);
2921 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2922 sizeof(priv->rxon_timing), &priv->rxon_timing);
2923 if (ret)
2924 IWL_WARNING("REPLY_RXON_TIMING failed - "
2925 "Attempting to continue.\n");
2926
2927 iwl_set_rxon_chain(priv);
2928
2929 /* FIXME: what should be the assoc_id for AP? */
2930 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2931 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2932 priv->staging_rxon.flags |=
2933 RXON_FLG_SHORT_PREAMBLE_MSK;
2934 else
2935 priv->staging_rxon.flags &=
2936 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2937
2938 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2939 if (priv->assoc_capability &
2940 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2941 priv->staging_rxon.flags |=
2942 RXON_FLG_SHORT_SLOT_MSK;
2943 else
2944 priv->staging_rxon.flags &=
2945 ~RXON_FLG_SHORT_SLOT_MSK;
2946
2947 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2948 priv->staging_rxon.flags &=
2949 ~RXON_FLG_SHORT_SLOT_MSK;
2950 }
2951 /* restore RXON assoc */
2952 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2953 iwl4965_commit_rxon(priv);
2954 spin_lock_irqsave(&priv->lock, flags);
2955 iwl_activate_qos(priv, 1);
2956 spin_unlock_irqrestore(&priv->lock, flags);
2957 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2958 }
2959 iwl4965_send_beacon_cmd(priv);
2960
2961 /* FIXME - we need to add code here to detect a totally new
2962 * configuration, reset the AP, unassoc, rxon timing, assoc,
2963 * clear sta table, add BCAST sta... */
2964 }
2965
2966 /* temporary */
2967 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb);
2968
2969 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
2970 struct ieee80211_vif *vif,
2971 struct ieee80211_if_conf *conf)
2972 {
2973 struct iwl_priv *priv = hw->priv;
2974 DECLARE_MAC_BUF(mac);
2975 unsigned long flags;
2976 int rc;
2977
2978 if (conf == NULL)
2979 return -EIO;
2980
2981 if (priv->vif != vif) {
2982 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2983 return 0;
2984 }
2985
2986 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
2987 conf->changed & IEEE80211_IFCC_BEACON) {
2988 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2989 if (!beacon)
2990 return -ENOMEM;
2991 rc = iwl4965_mac_beacon_update(hw, beacon);
2992 if (rc)
2993 return rc;
2994 }
2995
2996 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
2997 (!conf->ssid_len)) {
2998 IWL_DEBUG_MAC80211
2999 ("Leaving in AP mode because HostAPD is not ready.\n");
3000 return 0;
3001 }
3002
3003 if (!iwl_is_alive(priv))
3004 return -EAGAIN;
3005
3006 mutex_lock(&priv->mutex);
3007
3008 if (conf->bssid)
3009 IWL_DEBUG_MAC80211("bssid: %s\n",
3010 print_mac(mac, conf->bssid));
3011
3012 /*
3013 * very dubious code was here; the probe filtering flag is never set:
3014 *
3015 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
3016 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
3017 */
3018
3019 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
3020 if (!conf->bssid) {
3021 conf->bssid = priv->mac_addr;
3022 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
3023 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
3024 print_mac(mac, conf->bssid));
3025 }
3026 if (priv->ibss_beacon)
3027 dev_kfree_skb(priv->ibss_beacon);
3028
3029 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
3030 }
3031
3032 if (iwl_is_rfkill(priv))
3033 goto done;
3034
3035 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
3036 !is_multicast_ether_addr(conf->bssid)) {
3037 /* If there is currently a HW scan going on in the background
3038 * then we need to cancel it else the RXON below will fail. */
3039 if (iwl_scan_cancel_timeout(priv, 100)) {
3040 IWL_WARNING("Aborted scan still in progress "
3041 "after 100ms\n");
3042 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
3043 mutex_unlock(&priv->mutex);
3044 return -EAGAIN;
3045 }
3046 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
3047
3048 /* TODO: Audit driver for usage of these members and see
3049 * if mac80211 deprecates them (priv->bssid looks like it
3050 * shouldn't be there, but I haven't scanned the IBSS code
3051 * to verify) - jpk */
3052 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
3053
3054 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3055 iwl4965_config_ap(priv);
3056 else {
3057 rc = iwl4965_commit_rxon(priv);
3058 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
3059 iwl_rxon_add_station(
3060 priv, priv->active_rxon.bssid_addr, 1);
3061 }
3062
3063 } else {
3064 iwl_scan_cancel_timeout(priv, 100);
3065 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3066 iwl4965_commit_rxon(priv);
3067 }
3068
3069 done:
3070 spin_lock_irqsave(&priv->lock, flags);
3071 if (!conf->ssid_len)
3072 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3073 else
3074 memcpy(priv->essid, conf->ssid, conf->ssid_len);
3075
3076 priv->essid_len = conf->ssid_len;
3077 spin_unlock_irqrestore(&priv->lock, flags);
3078
3079 IWL_DEBUG_MAC80211("leave\n");
3080 mutex_unlock(&priv->mutex);
3081
3082 return 0;
3083 }
3084
3085 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
3086 unsigned int changed_flags,
3087 unsigned int *total_flags,
3088 int mc_count, struct dev_addr_list *mc_list)
3089 {
3090 struct iwl_priv *priv = hw->priv;
3091
3092 if (changed_flags & (*total_flags) & FIF_OTHER_BSS) {
3093 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
3094 IEEE80211_IF_TYPE_MNTR,
3095 changed_flags, *total_flags);
3096 /* queue work 'cuz mac80211 is holding a lock which
3097 * prevents us from issuing (synchronous) f/w cmds */
3098 queue_work(priv->workqueue, &priv->set_monitor);
3099 }
3100 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI |
3101 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3102 }
3103
3104 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
3105 struct ieee80211_if_init_conf *conf)
3106 {
3107 struct iwl_priv *priv = hw->priv;
3108
3109 IWL_DEBUG_MAC80211("enter\n");
3110
3111 mutex_lock(&priv->mutex);
3112
3113 if (iwl_is_ready_rf(priv)) {
3114 iwl_scan_cancel_timeout(priv, 100);
3115 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3116 iwl4965_commit_rxon(priv);
3117 }
3118 if (priv->vif == conf->vif) {
3119 priv->vif = NULL;
3120 memset(priv->bssid, 0, ETH_ALEN);
3121 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3122 priv->essid_len = 0;
3123 }
3124 mutex_unlock(&priv->mutex);
3125
3126 IWL_DEBUG_MAC80211("leave\n");
3127
3128 }
3129
3130 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3131 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
3132 struct ieee80211_vif *vif,
3133 struct ieee80211_bss_conf *bss_conf,
3134 u32 changes)
3135 {
3136 struct iwl_priv *priv = hw->priv;
3137
3138 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
3139
3140 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3141 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
3142 bss_conf->use_short_preamble);
3143 if (bss_conf->use_short_preamble)
3144 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3145 else
3146 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3147 }
3148
3149 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3150 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3151 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3152 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3153 else
3154 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3155 }
3156
3157 if (changes & BSS_CHANGED_HT) {
3158 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
3159 iwl4965_ht_conf(priv, bss_conf);
3160 iwl_set_rxon_chain(priv);
3161 }
3162
3163 if (changes & BSS_CHANGED_ASSOC) {
3164 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3165 /* This should never happen as this function should
3166 * never be called from interrupt context. */
3167 if (WARN_ON_ONCE(in_interrupt()))
3168 return;
3169 if (bss_conf->assoc) {
3170 priv->assoc_id = bss_conf->aid;
3171 priv->beacon_int = bss_conf->beacon_int;
3172 priv->power_data.dtim_period = bss_conf->dtim_period;
3173 priv->timestamp = bss_conf->timestamp;
3174 priv->assoc_capability = bss_conf->assoc_capability;
3175 priv->next_scan_jiffies = jiffies +
3176 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3177 mutex_lock(&priv->mutex);
3178 iwl4965_post_associate(priv);
3179 mutex_unlock(&priv->mutex);
3180 } else {
3181 priv->assoc_id = 0;
3182 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3183 }
3184 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3185 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3186 iwl_send_rxon_assoc(priv);
3187 }
3188
3189 }
3190
3191 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
3192 {
3193 int rc = 0;
3194 unsigned long flags;
3195 struct iwl_priv *priv = hw->priv;
3196
3197 IWL_DEBUG_MAC80211("enter\n");
3198
3199 mutex_lock(&priv->mutex);
3200 spin_lock_irqsave(&priv->lock, flags);
3201
3202 if (!iwl_is_ready_rf(priv)) {
3203 rc = -EIO;
3204 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3205 goto out_unlock;
3206 }
3207
3208 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
3209 rc = -EIO;
3210 IWL_ERROR("ERROR: APs don't scan\n");
3211 goto out_unlock;
3212 }
3213
3214 /* we don't schedule scan within next_scan_jiffies period */
3215 if (priv->next_scan_jiffies &&
3216 time_after(priv->next_scan_jiffies, jiffies)) {
3217 rc = -EAGAIN;
3218 goto out_unlock;
3219 }
3220 /* if we just finished scan ask for delay */
3221 if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
3222 IWL_DELAY_NEXT_SCAN, jiffies)) {
3223 rc = -EAGAIN;
3224 goto out_unlock;
3225 }
3226 if (len) {
3227 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
3228 iwl_escape_essid(ssid, len), (int)len);
3229
3230 priv->one_direct_scan = 1;
3231 priv->direct_ssid_len = (u8)
3232 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
3233 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3234 } else
3235 priv->one_direct_scan = 0;
3236
3237 rc = iwl_scan_initiate(priv);
3238
3239 IWL_DEBUG_MAC80211("leave\n");
3240
3241 out_unlock:
3242 spin_unlock_irqrestore(&priv->lock, flags);
3243 mutex_unlock(&priv->mutex);
3244
3245 return rc;
3246 }
3247
3248 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
3249 struct ieee80211_key_conf *keyconf, const u8 *addr,
3250 u32 iv32, u16 *phase1key)
3251 {
3252 struct iwl_priv *priv = hw->priv;
3253 u8 sta_id = IWL_INVALID_STATION;
3254 unsigned long flags;
3255 __le16 key_flags = 0;
3256 int i;
3257 DECLARE_MAC_BUF(mac);
3258
3259 IWL_DEBUG_MAC80211("enter\n");
3260
3261 sta_id = iwl_find_station(priv, addr);
3262 if (sta_id == IWL_INVALID_STATION) {
3263 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3264 print_mac(mac, addr));
3265 return;
3266 }
3267
3268 iwl_scan_cancel_timeout(priv, 100);
3269
3270 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
3271 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
3272 key_flags &= ~STA_KEY_FLG_INVALID;
3273
3274 if (sta_id == priv->hw_params.bcast_sta_id)
3275 key_flags |= STA_KEY_MULTICAST_MSK;
3276
3277 spin_lock_irqsave(&priv->sta_lock, flags);
3278
3279 priv->stations[sta_id].sta.key.key_flags = key_flags;
3280 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
3281
3282 for (i = 0; i < 5; i++)
3283 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
3284 cpu_to_le16(phase1key[i]);
3285
3286 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
3287 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3288
3289 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3290
3291 spin_unlock_irqrestore(&priv->sta_lock, flags);
3292
3293 IWL_DEBUG_MAC80211("leave\n");
3294 }
3295
3296 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3297 const u8 *local_addr, const u8 *addr,
3298 struct ieee80211_key_conf *key)
3299 {
3300 struct iwl_priv *priv = hw->priv;
3301 DECLARE_MAC_BUF(mac);
3302 int ret = 0;
3303 u8 sta_id = IWL_INVALID_STATION;
3304 u8 is_default_wep_key = 0;
3305
3306 IWL_DEBUG_MAC80211("enter\n");
3307
3308 if (priv->hw_params.sw_crypto) {
3309 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3310 return -EOPNOTSUPP;
3311 }
3312
3313 if (is_zero_ether_addr(addr))
3314 /* only support pairwise keys */
3315 return -EOPNOTSUPP;
3316
3317 sta_id = iwl_find_station(priv, addr);
3318 if (sta_id == IWL_INVALID_STATION) {
3319 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3320 print_mac(mac, addr));
3321 return -EINVAL;
3322
3323 }
3324
3325 mutex_lock(&priv->mutex);
3326 iwl_scan_cancel_timeout(priv, 100);
3327 mutex_unlock(&priv->mutex);
3328
3329 /* If we are getting WEP group key and we didn't receive any key mapping
3330 * so far, we are in legacy wep mode (group key only), otherwise we are
3331 * in 1X mode.
3332 * In legacy wep mode, we use another host command to the uCode */
3333 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3334 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3335 if (cmd == SET_KEY)
3336 is_default_wep_key = !priv->key_mapping_key;
3337 else
3338 is_default_wep_key =
3339 (key->hw_key_idx == HW_KEY_DEFAULT);
3340 }
3341
3342 switch (cmd) {
3343 case SET_KEY:
3344 if (is_default_wep_key)
3345 ret = iwl_set_default_wep_key(priv, key);
3346 else
3347 ret = iwl_set_dynamic_key(priv, key, sta_id);
3348
3349 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3350 break;
3351 case DISABLE_KEY:
3352 if (is_default_wep_key)
3353 ret = iwl_remove_default_wep_key(priv, key);
3354 else
3355 ret = iwl_remove_dynamic_key(priv, key, sta_id);
3356
3357 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3358 break;
3359 default:
3360 ret = -EINVAL;
3361 }
3362
3363 IWL_DEBUG_MAC80211("leave\n");
3364
3365 return ret;
3366 }
3367
3368 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3369 const struct ieee80211_tx_queue_params *params)
3370 {
3371 struct iwl_priv *priv = hw->priv;
3372 unsigned long flags;
3373 int q;
3374
3375 IWL_DEBUG_MAC80211("enter\n");
3376
3377 if (!iwl_is_ready_rf(priv)) {
3378 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3379 return -EIO;
3380 }
3381
3382 if (queue >= AC_NUM) {
3383 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3384 return 0;
3385 }
3386
3387 if (!priv->qos_data.qos_enable) {
3388 priv->qos_data.qos_active = 0;
3389 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3390 return 0;
3391 }
3392 q = AC_NUM - 1 - queue;
3393
3394 spin_lock_irqsave(&priv->lock, flags);
3395
3396 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3397 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3398 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3399 priv->qos_data.def_qos_parm.ac[q].edca_txop =
3400 cpu_to_le16((params->txop * 32));
3401
3402 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3403 priv->qos_data.qos_active = 1;
3404
3405 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3406 iwl_activate_qos(priv, 1);
3407 else if (priv->assoc_id && iwl_is_associated(priv))
3408 iwl_activate_qos(priv, 0);
3409
3410 spin_unlock_irqrestore(&priv->lock, flags);
3411
3412 IWL_DEBUG_MAC80211("leave\n");
3413 return 0;
3414 }
3415
3416 static int iwl4965_mac_ampdu_action(struct ieee80211_hw *hw,
3417 enum ieee80211_ampdu_mlme_action action,
3418 const u8 *addr, u16 tid, u16 *ssn)
3419 {
3420 struct iwl_priv *priv = hw->priv;
3421 DECLARE_MAC_BUF(mac);
3422
3423 IWL_DEBUG_HT("A-MPDU action on addr %s tid %d\n",
3424 print_mac(mac, addr), tid);
3425
3426 if (!(priv->cfg->sku & IWL_SKU_N))
3427 return -EACCES;
3428
3429 switch (action) {
3430 case IEEE80211_AMPDU_RX_START:
3431 IWL_DEBUG_HT("start Rx\n");
3432 return iwl_rx_agg_start(priv, addr, tid, *ssn);
3433 case IEEE80211_AMPDU_RX_STOP:
3434 IWL_DEBUG_HT("stop Rx\n");
3435 return iwl_rx_agg_stop(priv, addr, tid);
3436 case IEEE80211_AMPDU_TX_START:
3437 IWL_DEBUG_HT("start Tx\n");
3438 return iwl_tx_agg_start(priv, addr, tid, ssn);
3439 case IEEE80211_AMPDU_TX_STOP:
3440 IWL_DEBUG_HT("stop Tx\n");
3441 return iwl_tx_agg_stop(priv, addr, tid);
3442 default:
3443 IWL_DEBUG_HT("unknown\n");
3444 return -EINVAL;
3445 break;
3446 }
3447 return 0;
3448 }
3449 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
3450 struct ieee80211_tx_queue_stats *stats)
3451 {
3452 struct iwl_priv *priv = hw->priv;
3453 int i, avail;
3454 struct iwl_tx_queue *txq;
3455 struct iwl_queue *q;
3456 unsigned long flags;
3457
3458 IWL_DEBUG_MAC80211("enter\n");
3459
3460 if (!iwl_is_ready_rf(priv)) {
3461 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3462 return -EIO;
3463 }
3464
3465 spin_lock_irqsave(&priv->lock, flags);
3466
3467 for (i = 0; i < AC_NUM; i++) {
3468 txq = &priv->txq[i];
3469 q = &txq->q;
3470 avail = iwl_queue_space(q);
3471
3472 stats[i].len = q->n_window - avail;
3473 stats[i].limit = q->n_window - q->high_mark;
3474 stats[i].count = q->n_window;
3475
3476 }
3477 spin_unlock_irqrestore(&priv->lock, flags);
3478
3479 IWL_DEBUG_MAC80211("leave\n");
3480
3481 return 0;
3482 }
3483
3484 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
3485 struct ieee80211_low_level_stats *stats)
3486 {
3487 struct iwl_priv *priv = hw->priv;
3488
3489 priv = hw->priv;
3490 IWL_DEBUG_MAC80211("enter\n");
3491 IWL_DEBUG_MAC80211("leave\n");
3492
3493 return 0;
3494 }
3495
3496 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
3497 {
3498 struct iwl_priv *priv = hw->priv;
3499 unsigned long flags;
3500
3501 mutex_lock(&priv->mutex);
3502 IWL_DEBUG_MAC80211("enter\n");
3503
3504 spin_lock_irqsave(&priv->lock, flags);
3505 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3506 spin_unlock_irqrestore(&priv->lock, flags);
3507
3508 iwl_reset_qos(priv);
3509
3510 spin_lock_irqsave(&priv->lock, flags);
3511 priv->assoc_id = 0;
3512 priv->assoc_capability = 0;
3513 priv->assoc_station_added = 0;
3514
3515 /* new association get rid of ibss beacon skb */
3516 if (priv->ibss_beacon)
3517 dev_kfree_skb(priv->ibss_beacon);
3518
3519 priv->ibss_beacon = NULL;
3520
3521 priv->beacon_int = priv->hw->conf.beacon_int;
3522 priv->timestamp = 0;
3523 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
3524 priv->beacon_int = 0;
3525
3526 spin_unlock_irqrestore(&priv->lock, flags);
3527
3528 if (!iwl_is_ready_rf(priv)) {
3529 IWL_DEBUG_MAC80211("leave - not ready\n");
3530 mutex_unlock(&priv->mutex);
3531 return;
3532 }
3533
3534 /* we are restarting association process
3535 * clear RXON_FILTER_ASSOC_MSK bit
3536 */
3537 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3538 iwl_scan_cancel_timeout(priv, 100);
3539 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3540 iwl4965_commit_rxon(priv);
3541 }
3542
3543 iwl_power_update_mode(priv, 0);
3544
3545 /* Per mac80211.h: This is only used in IBSS mode... */
3546 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3547
3548 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3549 mutex_unlock(&priv->mutex);
3550 return;
3551 }
3552
3553 iwl4965_set_rate(priv);
3554
3555 mutex_unlock(&priv->mutex);
3556
3557 IWL_DEBUG_MAC80211("leave\n");
3558 }
3559
3560 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3561 {
3562 struct iwl_priv *priv = hw->priv;
3563 unsigned long flags;
3564 __le64 timestamp;
3565
3566 mutex_lock(&priv->mutex);
3567 IWL_DEBUG_MAC80211("enter\n");
3568
3569 if (!iwl_is_ready_rf(priv)) {
3570 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3571 mutex_unlock(&priv->mutex);
3572 return -EIO;
3573 }
3574
3575 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3576 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3577 mutex_unlock(&priv->mutex);
3578 return -EIO;
3579 }
3580
3581 spin_lock_irqsave(&priv->lock, flags);
3582
3583 if (priv->ibss_beacon)
3584 dev_kfree_skb(priv->ibss_beacon);
3585
3586 priv->ibss_beacon = skb;
3587
3588 priv->assoc_id = 0;
3589 timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3590 priv->timestamp = le64_to_cpu(timestamp);
3591
3592 IWL_DEBUG_MAC80211("leave\n");
3593 spin_unlock_irqrestore(&priv->lock, flags);
3594
3595 iwl_reset_qos(priv);
3596
3597 iwl4965_post_associate(priv);
3598
3599 mutex_unlock(&priv->mutex);
3600
3601 return 0;
3602 }
3603
3604 /*****************************************************************************
3605 *
3606 * sysfs attributes
3607 *
3608 *****************************************************************************/
3609
3610 #ifdef CONFIG_IWLWIFI_DEBUG
3611
3612 /*
3613 * The following adds a new attribute to the sysfs representation
3614 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3615 * used for controlling the debug level.
3616 *
3617 * See the level definitions in iwl for details.
3618 */
3619
3620 static ssize_t show_debug_level(struct device *d,
3621 struct device_attribute *attr, char *buf)
3622 {
3623 struct iwl_priv *priv = d->driver_data;
3624
3625 return sprintf(buf, "0x%08X\n", priv->debug_level);
3626 }
3627 static ssize_t store_debug_level(struct device *d,
3628 struct device_attribute *attr,
3629 const char *buf, size_t count)
3630 {
3631 struct iwl_priv *priv = d->driver_data;
3632 char *p = (char *)buf;
3633 u32 val;
3634
3635 val = simple_strtoul(p, &p, 0);
3636 if (p == buf)
3637 printk(KERN_INFO DRV_NAME
3638 ": %s is not in hex or decimal form.\n", buf);
3639 else
3640 priv->debug_level = val;
3641
3642 return strnlen(buf, count);
3643 }
3644
3645 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3646 show_debug_level, store_debug_level);
3647
3648
3649 #endif /* CONFIG_IWLWIFI_DEBUG */
3650
3651
3652 static ssize_t show_version(struct device *d,
3653 struct device_attribute *attr, char *buf)
3654 {
3655 struct iwl_priv *priv = d->driver_data;
3656 struct iwl_alive_resp *palive = &priv->card_alive;
3657 ssize_t pos = 0;
3658 u16 eeprom_ver;
3659
3660 if (palive->is_valid)
3661 pos += sprintf(buf + pos,
3662 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3663 "fw type: 0x%01X 0x%01X\n",
3664 palive->ucode_major, palive->ucode_minor,
3665 palive->sw_rev[0], palive->sw_rev[1],
3666 palive->ver_type, palive->ver_subtype);
3667 else
3668 pos += sprintf(buf + pos, "fw not loaded\n");
3669
3670 if (priv->eeprom) {
3671 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3672 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3673 eeprom_ver);
3674 } else {
3675 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3676 }
3677
3678 return pos;
3679 }
3680
3681 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3682
3683 static ssize_t show_temperature(struct device *d,
3684 struct device_attribute *attr, char *buf)
3685 {
3686 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3687
3688 if (!iwl_is_alive(priv))
3689 return -EAGAIN;
3690
3691 return sprintf(buf, "%d\n", priv->temperature);
3692 }
3693
3694 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3695
3696 static ssize_t show_tx_power(struct device *d,
3697 struct device_attribute *attr, char *buf)
3698 {
3699 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3700 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3701 }
3702
3703 static ssize_t store_tx_power(struct device *d,
3704 struct device_attribute *attr,
3705 const char *buf, size_t count)
3706 {
3707 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3708 char *p = (char *)buf;
3709 u32 val;
3710
3711 val = simple_strtoul(p, &p, 10);
3712 if (p == buf)
3713 printk(KERN_INFO DRV_NAME
3714 ": %s is not in decimal form.\n", buf);
3715 else
3716 iwl_set_tx_power(priv, val, false);
3717
3718 return count;
3719 }
3720
3721 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3722
3723 static ssize_t show_flags(struct device *d,
3724 struct device_attribute *attr, char *buf)
3725 {
3726 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3727
3728 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3729 }
3730
3731 static ssize_t store_flags(struct device *d,
3732 struct device_attribute *attr,
3733 const char *buf, size_t count)
3734 {
3735 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3736 u32 flags = simple_strtoul(buf, NULL, 0);
3737
3738 mutex_lock(&priv->mutex);
3739 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3740 /* Cancel any currently running scans... */
3741 if (iwl_scan_cancel_timeout(priv, 100))
3742 IWL_WARNING("Could not cancel scan.\n");
3743 else {
3744 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
3745 flags);
3746 priv->staging_rxon.flags = cpu_to_le32(flags);
3747 iwl4965_commit_rxon(priv);
3748 }
3749 }
3750 mutex_unlock(&priv->mutex);
3751
3752 return count;
3753 }
3754
3755 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3756
3757 static ssize_t show_filter_flags(struct device *d,
3758 struct device_attribute *attr, char *buf)
3759 {
3760 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3761
3762 return sprintf(buf, "0x%04X\n",
3763 le32_to_cpu(priv->active_rxon.filter_flags));
3764 }
3765
3766 static ssize_t store_filter_flags(struct device *d,
3767 struct device_attribute *attr,
3768 const char *buf, size_t count)
3769 {
3770 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3771 u32 filter_flags = simple_strtoul(buf, NULL, 0);
3772
3773 mutex_lock(&priv->mutex);
3774 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3775 /* Cancel any currently running scans... */
3776 if (iwl_scan_cancel_timeout(priv, 100))
3777 IWL_WARNING("Could not cancel scan.\n");
3778 else {
3779 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3780 "0x%04X\n", filter_flags);
3781 priv->staging_rxon.filter_flags =
3782 cpu_to_le32(filter_flags);
3783 iwl4965_commit_rxon(priv);
3784 }
3785 }
3786 mutex_unlock(&priv->mutex);
3787
3788 return count;
3789 }
3790
3791 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3792 store_filter_flags);
3793
3794 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
3795
3796 static ssize_t show_measurement(struct device *d,
3797 struct device_attribute *attr, char *buf)
3798 {
3799 struct iwl_priv *priv = dev_get_drvdata(d);
3800 struct iwl4965_spectrum_notification measure_report;
3801 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3802 u8 *data = (u8 *)&measure_report;
3803 unsigned long flags;
3804
3805 spin_lock_irqsave(&priv->lock, flags);
3806 if (!(priv->measurement_status & MEASUREMENT_READY)) {
3807 spin_unlock_irqrestore(&priv->lock, flags);
3808 return 0;
3809 }
3810 memcpy(&measure_report, &priv->measure_report, size);
3811 priv->measurement_status = 0;
3812 spin_unlock_irqrestore(&priv->lock, flags);
3813
3814 while (size && (PAGE_SIZE - len)) {
3815 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3816 PAGE_SIZE - len, 1);
3817 len = strlen(buf);
3818 if (PAGE_SIZE - len)
3819 buf[len++] = '\n';
3820
3821 ofs += 16;
3822 size -= min(size, 16U);
3823 }
3824
3825 return len;
3826 }
3827
3828 static ssize_t store_measurement(struct device *d,
3829 struct device_attribute *attr,
3830 const char *buf, size_t count)
3831 {
3832 struct iwl_priv *priv = dev_get_drvdata(d);
3833 struct ieee80211_measurement_params params = {
3834 .channel = le16_to_cpu(priv->active_rxon.channel),
3835 .start_time = cpu_to_le64(priv->last_tsf),
3836 .duration = cpu_to_le16(1),
3837 };
3838 u8 type = IWL_MEASURE_BASIC;
3839 u8 buffer[32];
3840 u8 channel;
3841
3842 if (count) {
3843 char *p = buffer;
3844 strncpy(buffer, buf, min(sizeof(buffer), count));
3845 channel = simple_strtoul(p, NULL, 0);
3846 if (channel)
3847 params.channel = channel;
3848
3849 p = buffer;
3850 while (*p && *p != ' ')
3851 p++;
3852 if (*p)
3853 type = simple_strtoul(p + 1, NULL, 0);
3854 }
3855
3856 IWL_DEBUG_INFO("Invoking measurement of type %d on "
3857 "channel %d (for '%s')\n", type, params.channel, buf);
3858 iwl4965_get_measurement(priv, &params, type);
3859
3860 return count;
3861 }
3862
3863 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3864 show_measurement, store_measurement);
3865 #endif /* CONFIG_IWLAGN_SPECTRUM_MEASUREMENT */
3866
3867 static ssize_t store_retry_rate(struct device *d,
3868 struct device_attribute *attr,
3869 const char *buf, size_t count)
3870 {
3871 struct iwl_priv *priv = dev_get_drvdata(d);
3872
3873 priv->retry_rate = simple_strtoul(buf, NULL, 0);
3874 if (priv->retry_rate <= 0)
3875 priv->retry_rate = 1;
3876
3877 return count;
3878 }
3879
3880 static ssize_t show_retry_rate(struct device *d,
3881 struct device_attribute *attr, char *buf)
3882 {
3883 struct iwl_priv *priv = dev_get_drvdata(d);
3884 return sprintf(buf, "%d", priv->retry_rate);
3885 }
3886
3887 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3888 store_retry_rate);
3889
3890 static ssize_t store_power_level(struct device *d,
3891 struct device_attribute *attr,
3892 const char *buf, size_t count)
3893 {
3894 struct iwl_priv *priv = dev_get_drvdata(d);
3895 int ret;
3896 int mode;
3897
3898 mode = simple_strtoul(buf, NULL, 0);
3899 mutex_lock(&priv->mutex);
3900
3901 if (!iwl_is_ready(priv)) {
3902 ret = -EAGAIN;
3903 goto out;
3904 }
3905
3906 ret = iwl_power_set_user_mode(priv, mode);
3907 if (ret) {
3908 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3909 goto out;
3910 }
3911 ret = count;
3912
3913 out:
3914 mutex_unlock(&priv->mutex);
3915 return ret;
3916 }
3917
3918 static ssize_t show_power_level(struct device *d,
3919 struct device_attribute *attr, char *buf)
3920 {
3921 struct iwl_priv *priv = dev_get_drvdata(d);
3922 int mode = priv->power_data.user_power_setting;
3923 int system = priv->power_data.system_power_setting;
3924 int level = priv->power_data.power_mode;
3925 char *p = buf;
3926
3927 switch (system) {
3928 case IWL_POWER_SYS_AUTO:
3929 p += sprintf(p, "SYSTEM:auto");
3930 break;
3931 case IWL_POWER_SYS_AC:
3932 p += sprintf(p, "SYSTEM:ac");
3933 break;
3934 case IWL_POWER_SYS_BATTERY:
3935 p += sprintf(p, "SYSTEM:battery");
3936 break;
3937 }
3938
3939 p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO)?"fixed":"auto");
3940 p += sprintf(p, "\tINDEX:%d", level);
3941 p += sprintf(p, "\n");
3942 return p - buf + 1;
3943 }
3944
3945 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3946 store_power_level);
3947
3948 static ssize_t show_channels(struct device *d,
3949 struct device_attribute *attr, char *buf)
3950 {
3951
3952 struct iwl_priv *priv = dev_get_drvdata(d);
3953 struct ieee80211_channel *channels = NULL;
3954 const struct ieee80211_supported_band *supp_band = NULL;
3955 int len = 0, i;
3956 int count = 0;
3957
3958 if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3959 return -EAGAIN;
3960
3961 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3962 channels = supp_band->channels;
3963 count = supp_band->n_channels;
3964
3965 len += sprintf(&buf[len],
3966 "Displaying %d channels in 2.4GHz band "
3967 "(802.11bg):\n", count);
3968
3969 for (i = 0; i < count; i++)
3970 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3971 ieee80211_frequency_to_channel(
3972 channels[i].center_freq),
3973 channels[i].max_power,
3974 channels[i].flags & IEEE80211_CHAN_RADAR ?
3975 " (IEEE 802.11h required)" : "",
3976 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3977 || (channels[i].flags &
3978 IEEE80211_CHAN_RADAR)) ? "" :
3979 ", IBSS",
3980 channels[i].flags &
3981 IEEE80211_CHAN_PASSIVE_SCAN ?
3982 "passive only" : "active/passive");
3983
3984 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
3985 channels = supp_band->channels;
3986 count = supp_band->n_channels;
3987
3988 len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
3989 "(802.11a):\n", count);
3990
3991 for (i = 0; i < count; i++)
3992 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3993 ieee80211_frequency_to_channel(
3994 channels[i].center_freq),
3995 channels[i].max_power,
3996 channels[i].flags & IEEE80211_CHAN_RADAR ?
3997 " (IEEE 802.11h required)" : "",
3998 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3999 || (channels[i].flags &
4000 IEEE80211_CHAN_RADAR)) ? "" :
4001 ", IBSS",
4002 channels[i].flags &
4003 IEEE80211_CHAN_PASSIVE_SCAN ?
4004 "passive only" : "active/passive");
4005
4006 return len;
4007 }
4008
4009 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
4010
4011 static ssize_t show_statistics(struct device *d,
4012 struct device_attribute *attr, char *buf)
4013 {
4014 struct iwl_priv *priv = dev_get_drvdata(d);
4015 u32 size = sizeof(struct iwl_notif_statistics);
4016 u32 len = 0, ofs = 0;
4017 u8 *data = (u8 *)&priv->statistics;
4018 int rc = 0;
4019
4020 if (!iwl_is_alive(priv))
4021 return -EAGAIN;
4022
4023 mutex_lock(&priv->mutex);
4024 rc = iwl_send_statistics_request(priv, 0);
4025 mutex_unlock(&priv->mutex);
4026
4027 if (rc) {
4028 len = sprintf(buf,
4029 "Error sending statistics request: 0x%08X\n", rc);
4030 return len;
4031 }
4032
4033 while (size && (PAGE_SIZE - len)) {
4034 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4035 PAGE_SIZE - len, 1);
4036 len = strlen(buf);
4037 if (PAGE_SIZE - len)
4038 buf[len++] = '\n';
4039
4040 ofs += 16;
4041 size -= min(size, 16U);
4042 }
4043
4044 return len;
4045 }
4046
4047 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
4048
4049 static ssize_t show_status(struct device *d,
4050 struct device_attribute *attr, char *buf)
4051 {
4052 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4053 if (!iwl_is_alive(priv))
4054 return -EAGAIN;
4055 return sprintf(buf, "0x%08x\n", (int)priv->status);
4056 }
4057
4058 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
4059
4060 /*****************************************************************************
4061 *
4062 * driver setup and teardown
4063 *
4064 *****************************************************************************/
4065
4066 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4067 {
4068 priv->workqueue = create_workqueue(DRV_NAME);
4069
4070 init_waitqueue_head(&priv->wait_command_queue);
4071
4072 INIT_WORK(&priv->up, iwl4965_bg_up);
4073 INIT_WORK(&priv->restart, iwl4965_bg_restart);
4074 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
4075 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
4076 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4077 INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
4078 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4079 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4080 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4081
4082 /* FIXME : remove when resolved PENDING */
4083 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
4084 iwl_setup_scan_deferred_work(priv);
4085
4086 if (priv->cfg->ops->lib->setup_deferred_work)
4087 priv->cfg->ops->lib->setup_deferred_work(priv);
4088
4089 init_timer(&priv->statistics_periodic);
4090 priv->statistics_periodic.data = (unsigned long)priv;
4091 priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
4092
4093 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4094 iwl4965_irq_tasklet, (unsigned long)priv);
4095 }
4096
4097 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4098 {
4099 if (priv->cfg->ops->lib->cancel_deferred_work)
4100 priv->cfg->ops->lib->cancel_deferred_work(priv);
4101
4102 cancel_delayed_work_sync(&priv->init_alive_start);
4103 cancel_delayed_work(&priv->scan_check);
4104 cancel_delayed_work(&priv->alive_start);
4105 cancel_work_sync(&priv->beacon_update);
4106 del_timer_sync(&priv->statistics_periodic);
4107 }
4108
4109 static struct attribute *iwl4965_sysfs_entries[] = {
4110 &dev_attr_channels.attr,
4111 &dev_attr_flags.attr,
4112 &dev_attr_filter_flags.attr,
4113 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
4114 &dev_attr_measurement.attr,
4115 #endif
4116 &dev_attr_power_level.attr,
4117 &dev_attr_retry_rate.attr,
4118 &dev_attr_statistics.attr,
4119 &dev_attr_status.attr,
4120 &dev_attr_temperature.attr,
4121 &dev_attr_tx_power.attr,
4122 #ifdef CONFIG_IWLWIFI_DEBUG
4123 &dev_attr_debug_level.attr,
4124 #endif
4125 &dev_attr_version.attr,
4126
4127 NULL
4128 };
4129
4130 static struct attribute_group iwl4965_attribute_group = {
4131 .name = NULL, /* put in device directory */
4132 .attrs = iwl4965_sysfs_entries,
4133 };
4134
4135 static struct ieee80211_ops iwl4965_hw_ops = {
4136 .tx = iwl4965_mac_tx,
4137 .start = iwl4965_mac_start,
4138 .stop = iwl4965_mac_stop,
4139 .add_interface = iwl4965_mac_add_interface,
4140 .remove_interface = iwl4965_mac_remove_interface,
4141 .config = iwl4965_mac_config,
4142 .config_interface = iwl4965_mac_config_interface,
4143 .configure_filter = iwl4965_configure_filter,
4144 .set_key = iwl4965_mac_set_key,
4145 .update_tkip_key = iwl4965_mac_update_tkip_key,
4146 .get_stats = iwl4965_mac_get_stats,
4147 .get_tx_stats = iwl4965_mac_get_tx_stats,
4148 .conf_tx = iwl4965_mac_conf_tx,
4149 .reset_tsf = iwl4965_mac_reset_tsf,
4150 .bss_info_changed = iwl4965_bss_info_changed,
4151 .ampdu_action = iwl4965_mac_ampdu_action,
4152 .hw_scan = iwl4965_mac_hw_scan
4153 };
4154
4155 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4156 {
4157 int err = 0;
4158 struct iwl_priv *priv;
4159 struct ieee80211_hw *hw;
4160 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4161 unsigned long flags;
4162 DECLARE_MAC_BUF(mac);
4163
4164 /************************
4165 * 1. Allocating HW data
4166 ************************/
4167
4168 /* Disabling hardware scan means that mac80211 will perform scans
4169 * "the hard way", rather than using device's scan. */
4170 if (cfg->mod_params->disable_hw_scan) {
4171 if (cfg->mod_params->debug & IWL_DL_INFO)
4172 dev_printk(KERN_DEBUG, &(pdev->dev),
4173 "Disabling hw_scan\n");
4174 iwl4965_hw_ops.hw_scan = NULL;
4175 }
4176
4177 hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
4178 if (!hw) {
4179 err = -ENOMEM;
4180 goto out;
4181 }
4182 priv = hw->priv;
4183 /* At this point both hw and priv are allocated. */
4184
4185 SET_IEEE80211_DEV(hw, &pdev->dev);
4186
4187 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
4188 priv->cfg = cfg;
4189 priv->pci_dev = pdev;
4190
4191 #ifdef CONFIG_IWLWIFI_DEBUG
4192 priv->debug_level = priv->cfg->mod_params->debug;
4193 atomic_set(&priv->restrict_refcnt, 0);
4194 #endif
4195
4196 /**************************
4197 * 2. Initializing PCI bus
4198 **************************/
4199 if (pci_enable_device(pdev)) {
4200 err = -ENODEV;
4201 goto out_ieee80211_free_hw;
4202 }
4203
4204 pci_set_master(pdev);
4205
4206 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
4207 if (!err)
4208 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
4209 if (err) {
4210 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4211 if (!err)
4212 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
4213 /* both attempts failed: */
4214 if (err) {
4215 printk(KERN_WARNING "%s: No suitable DMA available.\n",
4216 DRV_NAME);
4217 goto out_pci_disable_device;
4218 }
4219 }
4220
4221 err = pci_request_regions(pdev, DRV_NAME);
4222 if (err)
4223 goto out_pci_disable_device;
4224
4225 pci_set_drvdata(pdev, priv);
4226
4227 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4228 * PCI Tx retries from interfering with C3 CPU state */
4229 pci_write_config_byte(pdev, 0x41, 0x00);
4230
4231 /***********************
4232 * 3. Read REV register
4233 ***********************/
4234 priv->hw_base = pci_iomap(pdev, 0, 0);
4235 if (!priv->hw_base) {
4236 err = -ENODEV;
4237 goto out_pci_release_regions;
4238 }
4239
4240 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
4241 (unsigned long long) pci_resource_len(pdev, 0));
4242 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
4243
4244 iwl_hw_detect(priv);
4245 printk(KERN_INFO DRV_NAME
4246 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
4247 priv->cfg->name, priv->hw_rev);
4248
4249 /* amp init */
4250 err = priv->cfg->ops->lib->apm_ops.init(priv);
4251 if (err < 0) {
4252 IWL_DEBUG_INFO("Failed to init APMG\n");
4253 goto out_iounmap;
4254 }
4255 /*****************
4256 * 4. Read EEPROM
4257 *****************/
4258 /* Read the EEPROM */
4259 err = iwl_eeprom_init(priv);
4260 if (err) {
4261 IWL_ERROR("Unable to init EEPROM\n");
4262 goto out_iounmap;
4263 }
4264 err = iwl_eeprom_check_version(priv);
4265 if (err)
4266 goto out_iounmap;
4267
4268 /* extract MAC Address */
4269 iwl_eeprom_get_mac(priv, priv->mac_addr);
4270 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
4271 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4272
4273 /************************
4274 * 5. Setup HW constants
4275 ************************/
4276 if (iwl_set_hw_params(priv)) {
4277 IWL_ERROR("failed to set hw parameters\n");
4278 goto out_free_eeprom;
4279 }
4280
4281 /*******************
4282 * 6. Setup priv
4283 *******************/
4284
4285 err = iwl_init_drv(priv);
4286 if (err)
4287 goto out_free_eeprom;
4288 /* At this point both hw and priv are initialized. */
4289
4290 /**********************************
4291 * 7. Initialize module parameters
4292 **********************************/
4293
4294 /* Disable radio (SW RF KILL) via parameter when loading driver */
4295 if (priv->cfg->mod_params->disable) {
4296 set_bit(STATUS_RF_KILL_SW, &priv->status);
4297 IWL_DEBUG_INFO("Radio disabled.\n");
4298 }
4299
4300 /********************
4301 * 8. Setup services
4302 ********************/
4303 spin_lock_irqsave(&priv->lock, flags);
4304 iwl4965_disable_interrupts(priv);
4305 spin_unlock_irqrestore(&priv->lock, flags);
4306
4307 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4308 if (err) {
4309 IWL_ERROR("failed to create sysfs device attributes\n");
4310 goto out_uninit_drv;
4311 }
4312
4313
4314 iwl_setup_deferred_work(priv);
4315 iwl_setup_rx_handlers(priv);
4316
4317 /********************
4318 * 9. Conclude
4319 ********************/
4320 pci_save_state(pdev);
4321 pci_disable_device(pdev);
4322
4323 /**********************************
4324 * 10. Setup and register mac80211
4325 **********************************/
4326
4327 err = iwl_setup_mac(priv);
4328 if (err)
4329 goto out_remove_sysfs;
4330
4331 err = iwl_dbgfs_register(priv, DRV_NAME);
4332 if (err)
4333 IWL_ERROR("failed to create debugfs files\n");
4334
4335 err = iwl_rfkill_init(priv);
4336 if (err)
4337 IWL_ERROR("Unable to initialize RFKILL system. "
4338 "Ignoring error: %d\n", err);
4339 iwl_power_initialize(priv);
4340 return 0;
4341
4342 out_remove_sysfs:
4343 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4344 out_uninit_drv:
4345 iwl_uninit_drv(priv);
4346 out_free_eeprom:
4347 iwl_eeprom_free(priv);
4348 out_iounmap:
4349 pci_iounmap(pdev, priv->hw_base);
4350 out_pci_release_regions:
4351 pci_release_regions(pdev);
4352 pci_set_drvdata(pdev, NULL);
4353 out_pci_disable_device:
4354 pci_disable_device(pdev);
4355 out_ieee80211_free_hw:
4356 ieee80211_free_hw(priv->hw);
4357 out:
4358 return err;
4359 }
4360
4361 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
4362 {
4363 struct iwl_priv *priv = pci_get_drvdata(pdev);
4364 unsigned long flags;
4365
4366 if (!priv)
4367 return;
4368
4369 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4370
4371 iwl_dbgfs_unregister(priv);
4372 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4373
4374 if (priv->mac80211_registered) {
4375 ieee80211_unregister_hw(priv->hw);
4376 priv->mac80211_registered = 0;
4377 }
4378
4379 set_bit(STATUS_EXIT_PENDING, &priv->status);
4380
4381 iwl4965_down(priv);
4382
4383 /* make sure we flush any pending irq or
4384 * tasklet for the driver
4385 */
4386 spin_lock_irqsave(&priv->lock, flags);
4387 iwl4965_disable_interrupts(priv);
4388 spin_unlock_irqrestore(&priv->lock, flags);
4389
4390 iwl_synchronize_irq(priv);
4391
4392 iwl_rfkill_unregister(priv);
4393 iwl4965_dealloc_ucode_pci(priv);
4394
4395 if (priv->rxq.bd)
4396 iwl_rx_queue_free(priv, &priv->rxq);
4397 iwl_hw_txq_ctx_free(priv);
4398
4399 iwl_clear_stations_table(priv);
4400 iwl_eeprom_free(priv);
4401
4402
4403 /*netif_stop_queue(dev); */
4404 flush_workqueue(priv->workqueue);
4405
4406 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
4407 * priv->workqueue... so we can't take down the workqueue
4408 * until now... */
4409 destroy_workqueue(priv->workqueue);
4410 priv->workqueue = NULL;
4411
4412 pci_iounmap(pdev, priv->hw_base);
4413 pci_release_regions(pdev);
4414 pci_disable_device(pdev);
4415 pci_set_drvdata(pdev, NULL);
4416
4417 iwl_uninit_drv(priv);
4418
4419 if (priv->ibss_beacon)
4420 dev_kfree_skb(priv->ibss_beacon);
4421
4422 ieee80211_free_hw(priv->hw);
4423 }
4424
4425 #ifdef CONFIG_PM
4426
4427 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4428 {
4429 struct iwl_priv *priv = pci_get_drvdata(pdev);
4430
4431 if (priv->is_open) {
4432 set_bit(STATUS_IN_SUSPEND, &priv->status);
4433 iwl4965_mac_stop(priv->hw);
4434 priv->is_open = 1;
4435 }
4436
4437 pci_set_power_state(pdev, PCI_D3hot);
4438
4439 return 0;
4440 }
4441
4442 static int iwl4965_pci_resume(struct pci_dev *pdev)
4443 {
4444 struct iwl_priv *priv = pci_get_drvdata(pdev);
4445
4446 pci_set_power_state(pdev, PCI_D0);
4447
4448 if (priv->is_open)
4449 iwl4965_mac_start(priv->hw);
4450
4451 clear_bit(STATUS_IN_SUSPEND, &priv->status);
4452 return 0;
4453 }
4454
4455 #endif /* CONFIG_PM */
4456
4457 /*****************************************************************************
4458 *
4459 * driver and module entry point
4460 *
4461 *****************************************************************************/
4462
4463 /* Hardware specific file defines the PCI IDs table for that hardware module */
4464 static struct pci_device_id iwl_hw_card_ids[] = {
4465 #ifdef CONFIG_IWL4965
4466 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4467 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4468 #endif /* CONFIG_IWL4965 */
4469 #ifdef CONFIG_IWL5000
4470 {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
4471 {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
4472 {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
4473 {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
4474 {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
4475 {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
4476 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4477 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4478 {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
4479 {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
4480 {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
4481 #endif /* CONFIG_IWL5000 */
4482 {0}
4483 };
4484 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4485
4486 static struct pci_driver iwl_driver = {
4487 .name = DRV_NAME,
4488 .id_table = iwl_hw_card_ids,
4489 .probe = iwl4965_pci_probe,
4490 .remove = __devexit_p(iwl4965_pci_remove),
4491 #ifdef CONFIG_PM
4492 .suspend = iwl4965_pci_suspend,
4493 .resume = iwl4965_pci_resume,
4494 #endif
4495 };
4496
4497 static int __init iwl4965_init(void)
4498 {
4499
4500 int ret;
4501 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4502 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4503
4504 ret = iwlagn_rate_control_register();
4505 if (ret) {
4506 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4507 return ret;
4508 }
4509
4510 ret = pci_register_driver(&iwl_driver);
4511 if (ret) {
4512 IWL_ERROR("Unable to initialize PCI module\n");
4513 goto error_register;
4514 }
4515
4516 return ret;
4517
4518 error_register:
4519 iwlagn_rate_control_unregister();
4520 return ret;
4521 }
4522
4523 static void __exit iwl4965_exit(void)
4524 {
4525 pci_unregister_driver(&iwl_driver);
4526 iwlagn_rate_control_unregister();
4527 }
4528
4529 module_exit(iwl4965_exit);
4530 module_init(iwl4965_init);
Linux kernel - Deliverables
This page took 0.129098 seconds and 4 git commands to generate.