projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
[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 static 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 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
568 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
569 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
570 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
571
572 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
573 iwl_conf->max_amsdu_size =
574 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
575
576 iwl_conf->supported_chan_width =
577 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
578 iwl_conf->extension_chan_offset =
579 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
580 /* If no above or below channel supplied disable FAT channel */
581 if (iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_ABOVE &&
582 iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_BELOW) {
583 iwl_conf->extension_chan_offset = IEEE80211_HT_IE_CHA_SEC_NONE;
584 iwl_conf->supported_chan_width = 0;
585 }
586
587 iwl_conf->sm_ps = (u8)((ht_conf->cap & IEEE80211_HT_CAP_SM_PS) >> 2);
588
589 memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
590
591 iwl_conf->control_channel = ht_bss_conf->primary_channel;
592 iwl_conf->tx_chan_width =
593 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
594 iwl_conf->ht_protection =
595 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
596 iwl_conf->non_GF_STA_present =
597 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
598
599 IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
600 IWL_DEBUG_MAC80211("leave\n");
601 }
602
603 /*
604 * QoS support
605 */
606 static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
607 {
608 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
609 return;
610
611 if (!priv->qos_data.qos_enable)
612 return;
613
614 priv->qos_data.def_qos_parm.qos_flags = 0;
615
616 if (priv->qos_data.qos_cap.q_AP.queue_request &&
617 !priv->qos_data.qos_cap.q_AP.txop_request)
618 priv->qos_data.def_qos_parm.qos_flags |=
619 QOS_PARAM_FLG_TXOP_TYPE_MSK;
620 if (priv->qos_data.qos_active)
621 priv->qos_data.def_qos_parm.qos_flags |=
622 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
623
624 if (priv->current_ht_config.is_ht)
625 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
626
627 if (force || iwl_is_associated(priv)) {
628 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
629 priv->qos_data.qos_active,
630 priv->qos_data.def_qos_parm.qos_flags);
631
632 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
633 sizeof(struct iwl_qosparam_cmd),
634 &priv->qos_data.def_qos_parm, NULL);
635 }
636 }
637
638 #define MAX_UCODE_BEACON_INTERVAL 4096
639
640 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
641 {
642 u16 new_val = 0;
643 u16 beacon_factor = 0;
644
645 beacon_factor =
646 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
647 / MAX_UCODE_BEACON_INTERVAL;
648 new_val = beacon_val / beacon_factor;
649
650 return cpu_to_le16(new_val);
651 }
652
653 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
654 {
655 u64 interval_tm_unit;
656 u64 tsf, result;
657 unsigned long flags;
658 struct ieee80211_conf *conf = NULL;
659 u16 beacon_int = 0;
660
661 conf = ieee80211_get_hw_conf(priv->hw);
662
663 spin_lock_irqsave(&priv->lock, flags);
664 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
665 priv->rxon_timing.timestamp.dw[0] =
666 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
667
668 priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
669
670 tsf = priv->timestamp;
671
672 beacon_int = priv->beacon_int;
673 spin_unlock_irqrestore(&priv->lock, flags);
674
675 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
676 if (beacon_int == 0) {
677 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
678 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
679 } else {
680 priv->rxon_timing.beacon_interval =
681 cpu_to_le16(beacon_int);
682 priv->rxon_timing.beacon_interval =
683 iwl4965_adjust_beacon_interval(
684 le16_to_cpu(priv->rxon_timing.beacon_interval));
685 }
686
687 priv->rxon_timing.atim_window = 0;
688 } else {
689 priv->rxon_timing.beacon_interval =
690 iwl4965_adjust_beacon_interval(conf->beacon_int);
691 /* TODO: we need to get atim_window from upper stack
692 * for now we set to 0 */
693 priv->rxon_timing.atim_window = 0;
694 }
695
696 interval_tm_unit =
697 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
698 result = do_div(tsf, interval_tm_unit);
699 priv->rxon_timing.beacon_init_val =
700 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
701
702 IWL_DEBUG_ASSOC
703 ("beacon interval %d beacon timer %d beacon tim %d\n",
704 le16_to_cpu(priv->rxon_timing.beacon_interval),
705 le32_to_cpu(priv->rxon_timing.beacon_init_val),
706 le16_to_cpu(priv->rxon_timing.atim_window));
707 }
708
709 static void iwl_set_flags_for_band(struct iwl_priv *priv,
710 enum ieee80211_band band)
711 {
712 if (band == IEEE80211_BAND_5GHZ) {
713 priv->staging_rxon.flags &=
714 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
715 | RXON_FLG_CCK_MSK);
716 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
717 } else {
718 /* Copied from iwl4965_post_associate() */
719 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
720 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
721 else
722 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
723
724 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
725 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
726
727 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
728 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
729 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
730 }
731 }
732
733 /*
734 * initialize rxon structure with default values from eeprom
735 */
736 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
737 {
738 const struct iwl_channel_info *ch_info;
739
740 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
741
742 switch (priv->iw_mode) {
743 case IEEE80211_IF_TYPE_AP:
744 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
745 break;
746
747 case IEEE80211_IF_TYPE_STA:
748 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
749 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
750 break;
751
752 case IEEE80211_IF_TYPE_IBSS:
753 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
754 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
755 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
756 RXON_FILTER_ACCEPT_GRP_MSK;
757 break;
758
759 case IEEE80211_IF_TYPE_MNTR:
760 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
761 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
762 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
763 break;
764 default:
765 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
766 break;
767 }
768
769 #if 0
770 /* TODO: Figure out when short_preamble would be set and cache from
771 * that */
772 if (!hw_to_local(priv->hw)->short_preamble)
773 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
774 else
775 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
776 #endif
777
778 ch_info = iwl_get_channel_info(priv, priv->band,
779 le16_to_cpu(priv->active_rxon.channel));
780
781 if (!ch_info)
782 ch_info = &priv->channel_info[0];
783
784 /*
785 * in some case A channels are all non IBSS
786 * in this case force B/G channel
787 */
788 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
789 !(is_channel_ibss(ch_info)))
790 ch_info = &priv->channel_info[0];
791
792 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
793 priv->band = ch_info->band;
794
795 iwl_set_flags_for_band(priv, priv->band);
796
797 priv->staging_rxon.ofdm_basic_rates =
798 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
799 priv->staging_rxon.cck_basic_rates =
800 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
801
802 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
803 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
804 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
805 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
806 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
807 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
808 iwl_set_rxon_chain(priv);
809 }
810
811 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
812 {
813 priv->iw_mode = mode;
814
815 iwl4965_connection_init_rx_config(priv);
816 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
817
818 iwl_clear_stations_table(priv);
819
820 /* dont commit rxon if rf-kill is on*/
821 if (!iwl_is_ready_rf(priv))
822 return -EAGAIN;
823
824 cancel_delayed_work(&priv->scan_check);
825 if (iwl_scan_cancel_timeout(priv, 100)) {
826 IWL_WARNING("Aborted scan still in progress after 100ms\n");
827 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
828 return -EAGAIN;
829 }
830
831 iwl4965_commit_rxon(priv);
832
833 return 0;
834 }
835
836 static void iwl4965_set_rate(struct iwl_priv *priv)
837 {
838 const struct ieee80211_supported_band *hw = NULL;
839 struct ieee80211_rate *rate;
840 int i;
841
842 hw = iwl_get_hw_mode(priv, priv->band);
843 if (!hw) {
844 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
845 return;
846 }
847
848 priv->active_rate = 0;
849 priv->active_rate_basic = 0;
850
851 for (i = 0; i < hw->n_bitrates; i++) {
852 rate = &(hw->bitrates[i]);
853 if (rate->hw_value < IWL_RATE_COUNT)
854 priv->active_rate |= (1 << rate->hw_value);
855 }
856
857 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
858 priv->active_rate, priv->active_rate_basic);
859
860 /*
861 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
862 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
863 * OFDM
864 */
865 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
866 priv->staging_rxon.cck_basic_rates =
867 ((priv->active_rate_basic &
868 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
869 else
870 priv->staging_rxon.cck_basic_rates =
871 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
872
873 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
874 priv->staging_rxon.ofdm_basic_rates =
875 ((priv->active_rate_basic &
876 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
877 IWL_FIRST_OFDM_RATE) & 0xFF;
878 else
879 priv->staging_rxon.ofdm_basic_rates =
880 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
881 }
882
883 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
884
885 #include "iwl-spectrum.h"
886
887 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
888 #define BEACON_TIME_MASK_HIGH 0xFF000000
889 #define TIME_UNIT 1024
890
891 /*
892 * extended beacon time format
893 * time in usec will be changed into a 32-bit value in 8:24 format
894 * the high 1 byte is the beacon counts
895 * the lower 3 bytes is the time in usec within one beacon interval
896 */
897
898 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
899 {
900 u32 quot;
901 u32 rem;
902 u32 interval = beacon_interval * 1024;
903
904 if (!interval || !usec)
905 return 0;
906
907 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
908 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
909
910 return (quot << 24) + rem;
911 }
912
913 /* base is usually what we get from ucode with each received frame,
914 * the same as HW timer counter counting down
915 */
916
917 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
918 {
919 u32 base_low = base & BEACON_TIME_MASK_LOW;
920 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
921 u32 interval = beacon_interval * TIME_UNIT;
922 u32 res = (base & BEACON_TIME_MASK_HIGH) +
923 (addon & BEACON_TIME_MASK_HIGH);
924
925 if (base_low > addon_low)
926 res += base_low - addon_low;
927 else if (base_low < addon_low) {
928 res += interval + base_low - addon_low;
929 res += (1 << 24);
930 } else
931 res += (1 << 24);
932
933 return cpu_to_le32(res);
934 }
935
936 static int iwl4965_get_measurement(struct iwl_priv *priv,
937 struct ieee80211_measurement_params *params,
938 u8 type)
939 {
940 struct iwl4965_spectrum_cmd spectrum;
941 struct iwl_rx_packet *res;
942 struct iwl_host_cmd cmd = {
943 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
944 .data = (void *)&spectrum,
945 .meta.flags = CMD_WANT_SKB,
946 };
947 u32 add_time = le64_to_cpu(params->start_time);
948 int rc;
949 int spectrum_resp_status;
950 int duration = le16_to_cpu(params->duration);
951
952 if (iwl_is_associated(priv))
953 add_time =
954 iwl4965_usecs_to_beacons(
955 le64_to_cpu(params->start_time) - priv->last_tsf,
956 le16_to_cpu(priv->rxon_timing.beacon_interval));
957
958 memset(&spectrum, 0, sizeof(spectrum));
959
960 spectrum.channel_count = cpu_to_le16(1);
961 spectrum.flags =
962 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
963 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
964 cmd.len = sizeof(spectrum);
965 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
966
967 if (iwl_is_associated(priv))
968 spectrum.start_time =
969 iwl4965_add_beacon_time(priv->last_beacon_time,
970 add_time,
971 le16_to_cpu(priv->rxon_timing.beacon_interval));
972 else
973 spectrum.start_time = 0;
974
975 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
976 spectrum.channels[0].channel = params->channel;
977 spectrum.channels[0].type = type;
978 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
979 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
980 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
981
982 rc = iwl_send_cmd_sync(priv, &cmd);
983 if (rc)
984 return rc;
985
986 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
987 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
988 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
989 rc = -EIO;
990 }
991
992 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
993 switch (spectrum_resp_status) {
994 case 0: /* Command will be handled */
995 if (res->u.spectrum.id != 0xff) {
996 IWL_DEBUG_INFO
997 ("Replaced existing measurement: %d\n",
998 res->u.spectrum.id);
999 priv->measurement_status &= ~MEASUREMENT_READY;
1000 }
1001 priv->measurement_status |= MEASUREMENT_ACTIVE;
1002 rc = 0;
1003 break;
1004
1005 case 1: /* Command will not be handled */
1006 rc = -EAGAIN;
1007 break;
1008 }
1009
1010 dev_kfree_skb_any(cmd.meta.u.skb);
1011
1012 return rc;
1013 }
1014 #endif
1015
1016 /******************************************************************************
1017 *
1018 * Generic RX handler implementations
1019 *
1020 ******************************************************************************/
1021 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1022 struct iwl_rx_mem_buffer *rxb)
1023 {
1024 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1025 struct iwl_alive_resp *palive;
1026 struct delayed_work *pwork;
1027
1028 palive = &pkt->u.alive_frame;
1029
1030 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1031 "0x%01X 0x%01X\n",
1032 palive->is_valid, palive->ver_type,
1033 palive->ver_subtype);
1034
1035 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1036 IWL_DEBUG_INFO("Initialization Alive received.\n");
1037 memcpy(&priv->card_alive_init,
1038 &pkt->u.alive_frame,
1039 sizeof(struct iwl_init_alive_resp));
1040 pwork = &priv->init_alive_start;
1041 } else {
1042 IWL_DEBUG_INFO("Runtime Alive received.\n");
1043 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1044 sizeof(struct iwl_alive_resp));
1045 pwork = &priv->alive_start;
1046 }
1047
1048 /* We delay the ALIVE response by 5ms to
1049 * give the HW RF Kill time to activate... */
1050 if (palive->is_valid == UCODE_VALID_OK)
1051 queue_delayed_work(priv->workqueue, pwork,
1052 msecs_to_jiffies(5));
1053 else
1054 IWL_WARNING("uCode did not respond OK.\n");
1055 }
1056
1057 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1058 struct iwl_rx_mem_buffer *rxb)
1059 {
1060 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1061
1062 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1063 "seq 0x%04X ser 0x%08X\n",
1064 le32_to_cpu(pkt->u.err_resp.error_type),
1065 get_cmd_string(pkt->u.err_resp.cmd_id),
1066 pkt->u.err_resp.cmd_id,
1067 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1068 le32_to_cpu(pkt->u.err_resp.error_info));
1069 }
1070
1071 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1072
1073 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1074 {
1075 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1076 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1077 struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1078 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1079 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1080 rxon->channel = csa->channel;
1081 priv->staging_rxon.channel = csa->channel;
1082 }
1083
1084 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1085 struct iwl_rx_mem_buffer *rxb)
1086 {
1087 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
1088 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1089 struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1090
1091 if (!report->state) {
1092 IWL_DEBUG(IWL_DL_11H,
1093 "Spectrum Measure Notification: Start\n");
1094 return;
1095 }
1096
1097 memcpy(&priv->measure_report, report, sizeof(*report));
1098 priv->measurement_status |= MEASUREMENT_READY;
1099 #endif
1100 }
1101
1102 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1103 struct iwl_rx_mem_buffer *rxb)
1104 {
1105 #ifdef CONFIG_IWLWIFI_DEBUG
1106 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1107 struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1108 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1109 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1110 #endif
1111 }
1112
1113 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1114 struct iwl_rx_mem_buffer *rxb)
1115 {
1116 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1117 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1118 "notification for %s:\n",
1119 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1120 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1121 }
1122
1123 static void iwl4965_bg_beacon_update(struct work_struct *work)
1124 {
1125 struct iwl_priv *priv =
1126 container_of(work, struct iwl_priv, beacon_update);
1127 struct sk_buff *beacon;
1128
1129 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1130 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1131
1132 if (!beacon) {
1133 IWL_ERROR("update beacon failed\n");
1134 return;
1135 }
1136
1137 mutex_lock(&priv->mutex);
1138 /* new beacon skb is allocated every time; dispose previous.*/
1139 if (priv->ibss_beacon)
1140 dev_kfree_skb(priv->ibss_beacon);
1141
1142 priv->ibss_beacon = beacon;
1143 mutex_unlock(&priv->mutex);
1144
1145 iwl4965_send_beacon_cmd(priv);
1146 }
1147
1148 /**
1149 * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1150 *
1151 * This callback is provided in order to send a statistics request.
1152 *
1153 * This timer function is continually reset to execute within
1154 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1155 * was received. We need to ensure we receive the statistics in order
1156 * to update the temperature used for calibrating the TXPOWER.
1157 */
1158 static void iwl4965_bg_statistics_periodic(unsigned long data)
1159 {
1160 struct iwl_priv *priv = (struct iwl_priv *)data;
1161
1162 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1163 return;
1164
1165 iwl_send_statistics_request(priv, CMD_ASYNC);
1166 }
1167
1168 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1169 struct iwl_rx_mem_buffer *rxb)
1170 {
1171 #ifdef CONFIG_IWLWIFI_DEBUG
1172 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1173 struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1174 u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1175
1176 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1177 "tsf %d %d rate %d\n",
1178 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1179 beacon->beacon_notify_hdr.failure_frame,
1180 le32_to_cpu(beacon->ibss_mgr_status),
1181 le32_to_cpu(beacon->high_tsf),
1182 le32_to_cpu(beacon->low_tsf), rate);
1183 #endif
1184
1185 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
1186 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1187 queue_work(priv->workqueue, &priv->beacon_update);
1188 }
1189
1190 /* Handle notification from uCode that card's power state is changing
1191 * due to software, hardware, or critical temperature RFKILL */
1192 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1193 struct iwl_rx_mem_buffer *rxb)
1194 {
1195 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1196 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1197 unsigned long status = priv->status;
1198
1199 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1200 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1201 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1202
1203 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1204 RF_CARD_DISABLED)) {
1205
1206 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1207 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1208
1209 if (!iwl_grab_nic_access(priv)) {
1210 iwl_write_direct32(
1211 priv, HBUS_TARG_MBX_C,
1212 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1213
1214 iwl_release_nic_access(priv);
1215 }
1216
1217 if (!(flags & RXON_CARD_DISABLED)) {
1218 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1219 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1220 if (!iwl_grab_nic_access(priv)) {
1221 iwl_write_direct32(
1222 priv, HBUS_TARG_MBX_C,
1223 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1224
1225 iwl_release_nic_access(priv);
1226 }
1227 }
1228
1229 if (flags & RF_CARD_DISABLED) {
1230 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1231 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1232 iwl_read32(priv, CSR_UCODE_DRV_GP1);
1233 if (!iwl_grab_nic_access(priv))
1234 iwl_release_nic_access(priv);
1235 }
1236 }
1237
1238 if (flags & HW_CARD_DISABLED)
1239 set_bit(STATUS_RF_KILL_HW, &priv->status);
1240 else
1241 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1242
1243
1244 if (flags & SW_CARD_DISABLED)
1245 set_bit(STATUS_RF_KILL_SW, &priv->status);
1246 else
1247 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1248
1249 if (!(flags & RXON_CARD_DISABLED))
1250 iwl_scan_cancel(priv);
1251
1252 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1253 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1254 (test_bit(STATUS_RF_KILL_SW, &status) !=
1255 test_bit(STATUS_RF_KILL_SW, &priv->status)))
1256 queue_work(priv->workqueue, &priv->rf_kill);
1257 else
1258 wake_up_interruptible(&priv->wait_command_queue);
1259 }
1260
1261 int iwl4965_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
1262 {
1263 int ret;
1264 unsigned long flags;
1265
1266 spin_lock_irqsave(&priv->lock, flags);
1267 ret = iwl_grab_nic_access(priv);
1268 if (ret)
1269 goto err;
1270
1271 if (src == IWL_PWR_SRC_VAUX) {
1272 u32 val;
1273 ret = pci_read_config_dword(priv->pci_dev, PCI_CFG_POWER_SOURCE,
1274 &val);
1275
1276 if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT)
1277 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1278 APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
1279 ~APMG_PS_CTRL_MSK_PWR_SRC);
1280 } else {
1281 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1282 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
1283 ~APMG_PS_CTRL_MSK_PWR_SRC);
1284 }
1285
1286 iwl_release_nic_access(priv);
1287 err:
1288 spin_unlock_irqrestore(&priv->lock, flags);
1289 return ret;
1290 }
1291
1292 /**
1293 * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1294 *
1295 * Setup the RX handlers for each of the reply types sent from the uCode
1296 * to the host.
1297 *
1298 * This function chains into the hardware specific files for them to setup
1299 * any hardware specific handlers as well.
1300 */
1301 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1302 {
1303 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1304 priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1305 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1306 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1307 iwl4965_rx_spectrum_measure_notif;
1308 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1309 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1310 iwl4965_rx_pm_debug_statistics_notif;
1311 priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1312
1313 /*
1314 * The same handler is used for both the REPLY to a discrete
1315 * statistics request from the host as well as for the periodic
1316 * statistics notifications (after received beacons) from the uCode.
1317 */
1318 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1319 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1320
1321 iwl_setup_rx_scan_handlers(priv);
1322
1323 /* status change handler */
1324 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1325
1326 priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1327 iwl_rx_missed_beacon_notif;
1328 /* Rx handlers */
1329 priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1330 priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1331 /* block ack */
1332 priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1333 /* Set up hardware specific Rx handlers */
1334 priv->cfg->ops->lib->rx_handler_setup(priv);
1335 }
1336
1337 /*
1338 * this should be called while priv->lock is locked
1339 */
1340 static void __iwl_rx_replenish(struct iwl_priv *priv)
1341 {
1342 iwl_rx_allocate(priv);
1343 iwl_rx_queue_restock(priv);
1344 }
1345
1346
1347 /**
1348 * iwl_rx_handle - Main entry function for receiving responses from uCode
1349 *
1350 * Uses the priv->rx_handlers callback function array to invoke
1351 * the appropriate handlers, including command responses,
1352 * frame-received notifications, and other notifications.
1353 */
1354 void iwl_rx_handle(struct iwl_priv *priv)
1355 {
1356 struct iwl_rx_mem_buffer *rxb;
1357 struct iwl_rx_packet *pkt;
1358 struct iwl_rx_queue *rxq = &priv->rxq;
1359 u32 r, i;
1360 int reclaim;
1361 unsigned long flags;
1362 u8 fill_rx = 0;
1363 u32 count = 8;
1364
1365 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1366 * buffer that the driver may process (last buffer filled by ucode). */
1367 r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1368 i = rxq->read;
1369
1370 /* Rx interrupt, but nothing sent from uCode */
1371 if (i == r)
1372 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1373
1374 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1375 fill_rx = 1;
1376
1377 while (i != r) {
1378 rxb = rxq->queue[i];
1379
1380 /* If an RXB doesn't have a Rx queue slot associated with it,
1381 * then a bug has been introduced in the queue refilling
1382 * routines -- catch it here */
1383 BUG_ON(rxb == NULL);
1384
1385 rxq->queue[i] = NULL;
1386
1387 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1388 priv->hw_params.rx_buf_size,
1389 PCI_DMA_FROMDEVICE);
1390 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1391
1392 /* Reclaim a command buffer only if this packet is a response
1393 * to a (driver-originated) command.
1394 * If the packet (e.g. Rx frame) originated from uCode,
1395 * there is no command buffer to reclaim.
1396 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1397 * but apparently a few don't get set; catch them here. */
1398 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1399 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1400 (pkt->hdr.cmd != REPLY_RX) &&
1401 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1402 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1403 (pkt->hdr.cmd != REPLY_TX);
1404
1405 /* Based on type of command response or notification,
1406 * handle those that need handling via function in
1407 * rx_handlers table. See iwl4965_setup_rx_handlers() */
1408 if (priv->rx_handlers[pkt->hdr.cmd]) {
1409 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1410 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1411 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1412 } else {
1413 /* No handling needed */
1414 IWL_DEBUG(IWL_DL_RX,
1415 "r %d i %d No handler needed for %s, 0x%02x\n",
1416 r, i, get_cmd_string(pkt->hdr.cmd),
1417 pkt->hdr.cmd);
1418 }
1419
1420 if (reclaim) {
1421 /* Invoke any callbacks, transfer the skb to caller, and
1422 * fire off the (possibly) blocking iwl_send_cmd()
1423 * as we reclaim the driver command queue */
1424 if (rxb && rxb->skb)
1425 iwl_tx_cmd_complete(priv, rxb);
1426 else
1427 IWL_WARNING("Claim null rxb?\n");
1428 }
1429
1430 /* For now we just don't re-use anything. We can tweak this
1431 * later to try and re-use notification packets and SKBs that
1432 * fail to Rx correctly */
1433 if (rxb->skb != NULL) {
1434 priv->alloc_rxb_skb--;
1435 dev_kfree_skb_any(rxb->skb);
1436 rxb->skb = NULL;
1437 }
1438
1439 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
1440 priv->hw_params.rx_buf_size,
1441 PCI_DMA_FROMDEVICE);
1442 spin_lock_irqsave(&rxq->lock, flags);
1443 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1444 spin_unlock_irqrestore(&rxq->lock, flags);
1445 i = (i + 1) & RX_QUEUE_MASK;
1446 /* If there are a lot of unused frames,
1447 * restock the Rx queue so ucode wont assert. */
1448 if (fill_rx) {
1449 count++;
1450 if (count >= 8) {
1451 priv->rxq.read = i;
1452 __iwl_rx_replenish(priv);
1453 count = 0;
1454 }
1455 }
1456 }
1457
1458 /* Backtrack one entry */
1459 priv->rxq.read = i;
1460 iwl_rx_queue_restock(priv);
1461 }
1462
1463 #ifdef CONFIG_IWLWIFI_DEBUG
1464 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
1465 {
1466 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1467 DECLARE_MAC_BUF(mac);
1468
1469 IWL_DEBUG_RADIO("RX CONFIG:\n");
1470 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1471 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1472 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1473 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1474 le32_to_cpu(rxon->filter_flags));
1475 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1476 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1477 rxon->ofdm_basic_rates);
1478 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1479 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
1480 print_mac(mac, rxon->node_addr));
1481 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
1482 print_mac(mac, rxon->bssid_addr));
1483 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1484 }
1485 #endif
1486
1487 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
1488 {
1489 IWL_DEBUG_ISR("Enabling interrupts\n");
1490 set_bit(STATUS_INT_ENABLED, &priv->status);
1491 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1492 }
1493
1494 /* call this function to flush any scheduled tasklet */
1495 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1496 {
1497 /* wait to make sure we flush pedding tasklet*/
1498 synchronize_irq(priv->pci_dev->irq);
1499 tasklet_kill(&priv->irq_tasklet);
1500 }
1501
1502 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
1503 {
1504 clear_bit(STATUS_INT_ENABLED, &priv->status);
1505
1506 /* disable interrupts from uCode/NIC to host */
1507 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1508
1509 /* acknowledge/clear/reset any interrupts still pending
1510 * from uCode or flow handler (Rx/Tx DMA) */
1511 iwl_write32(priv, CSR_INT, 0xffffffff);
1512 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1513 IWL_DEBUG_ISR("Disabled interrupts\n");
1514 }
1515
1516
1517 /**
1518 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
1519 */
1520 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
1521 {
1522 /* Set the FW error flag -- cleared on iwl4965_down */
1523 set_bit(STATUS_FW_ERROR, &priv->status);
1524
1525 /* Cancel currently queued command. */
1526 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1527
1528 #ifdef CONFIG_IWLWIFI_DEBUG
1529 if (priv->debug_level & IWL_DL_FW_ERRORS) {
1530 iwl_dump_nic_error_log(priv);
1531 iwl_dump_nic_event_log(priv);
1532 iwl4965_print_rx_config_cmd(priv);
1533 }
1534 #endif
1535
1536 wake_up_interruptible(&priv->wait_command_queue);
1537
1538 /* Keep the restart process from trying to send host
1539 * commands by clearing the INIT status bit */
1540 clear_bit(STATUS_READY, &priv->status);
1541
1542 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1543 IWL_DEBUG(IWL_DL_FW_ERRORS,
1544 "Restarting adapter due to uCode error.\n");
1545
1546 if (iwl_is_associated(priv)) {
1547 memcpy(&priv->recovery_rxon, &priv->active_rxon,
1548 sizeof(priv->recovery_rxon));
1549 priv->error_recovering = 1;
1550 }
1551 if (priv->cfg->mod_params->restart_fw)
1552 queue_work(priv->workqueue, &priv->restart);
1553 }
1554 }
1555
1556 static void iwl4965_error_recovery(struct iwl_priv *priv)
1557 {
1558 unsigned long flags;
1559
1560 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1561 sizeof(priv->staging_rxon));
1562 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1563 iwl4965_commit_rxon(priv);
1564
1565 iwl_rxon_add_station(priv, priv->bssid, 1);
1566
1567 spin_lock_irqsave(&priv->lock, flags);
1568 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1569 priv->error_recovering = 0;
1570 spin_unlock_irqrestore(&priv->lock, flags);
1571 }
1572
1573 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
1574 {
1575 u32 inta, handled = 0;
1576 u32 inta_fh;
1577 unsigned long flags;
1578 #ifdef CONFIG_IWLWIFI_DEBUG
1579 u32 inta_mask;
1580 #endif
1581
1582 spin_lock_irqsave(&priv->lock, flags);
1583
1584 /* Ack/clear/reset pending uCode interrupts.
1585 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1586 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1587 inta = iwl_read32(priv, CSR_INT);
1588 iwl_write32(priv, CSR_INT, inta);
1589
1590 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1591 * Any new interrupts that happen after this, either while we're
1592 * in this tasklet, or later, will show up in next ISR/tasklet. */
1593 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1594 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1595
1596 #ifdef CONFIG_IWLWIFI_DEBUG
1597 if (priv->debug_level & IWL_DL_ISR) {
1598 /* just for debug */
1599 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1600 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1601 inta, inta_mask, inta_fh);
1602 }
1603 #endif
1604
1605 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1606 * atomic, make sure that inta covers all the interrupts that
1607 * we've discovered, even if FH interrupt came in just after
1608 * reading CSR_INT. */
1609 if (inta_fh & CSR49_FH_INT_RX_MASK)
1610 inta |= CSR_INT_BIT_FH_RX;
1611 if (inta_fh & CSR49_FH_INT_TX_MASK)
1612 inta |= CSR_INT_BIT_FH_TX;
1613
1614 /* Now service all interrupt bits discovered above. */
1615 if (inta & CSR_INT_BIT_HW_ERR) {
1616 IWL_ERROR("Microcode HW error detected. Restarting.\n");
1617
1618 /* Tell the device to stop sending interrupts */
1619 iwl4965_disable_interrupts(priv);
1620
1621 iwl4965_irq_handle_error(priv);
1622
1623 handled |= CSR_INT_BIT_HW_ERR;
1624
1625 spin_unlock_irqrestore(&priv->lock, flags);
1626
1627 return;
1628 }
1629
1630 #ifdef CONFIG_IWLWIFI_DEBUG
1631 if (priv->debug_level & (IWL_DL_ISR)) {
1632 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1633 if (inta & CSR_INT_BIT_SCD)
1634 IWL_DEBUG_ISR("Scheduler finished to transmit "
1635 "the frame/frames.\n");
1636
1637 /* Alive notification via Rx interrupt will do the real work */
1638 if (inta & CSR_INT_BIT_ALIVE)
1639 IWL_DEBUG_ISR("Alive interrupt\n");
1640 }
1641 #endif
1642 /* Safely ignore these bits for debug checks below */
1643 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1644
1645 /* HW RF KILL switch toggled */
1646 if (inta & CSR_INT_BIT_RF_KILL) {
1647 int hw_rf_kill = 0;
1648 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1649 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1650 hw_rf_kill = 1;
1651
1652 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1653 hw_rf_kill ? "disable radio":"enable radio");
1654
1655 /* driver only loads ucode once setting the interface up.
1656 * the driver as well won't allow loading if RFKILL is set
1657 * therefore no need to restart the driver from this handler
1658 */
1659 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
1660 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1661
1662 handled |= CSR_INT_BIT_RF_KILL;
1663 }
1664
1665 /* Chip got too hot and stopped itself */
1666 if (inta & CSR_INT_BIT_CT_KILL) {
1667 IWL_ERROR("Microcode CT kill error detected.\n");
1668 handled |= CSR_INT_BIT_CT_KILL;
1669 }
1670
1671 /* Error detected by uCode */
1672 if (inta & CSR_INT_BIT_SW_ERR) {
1673 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
1674 inta);
1675 iwl4965_irq_handle_error(priv);
1676 handled |= CSR_INT_BIT_SW_ERR;
1677 }
1678
1679 /* uCode wakes up after power-down sleep */
1680 if (inta & CSR_INT_BIT_WAKEUP) {
1681 IWL_DEBUG_ISR("Wakeup interrupt\n");
1682 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1683 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1684 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1685 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1686 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1687 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1688 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1689
1690 handled |= CSR_INT_BIT_WAKEUP;
1691 }
1692
1693 /* All uCode command responses, including Tx command responses,
1694 * Rx "responses" (frame-received notification), and other
1695 * notifications from uCode come through here*/
1696 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1697 iwl_rx_handle(priv);
1698 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1699 }
1700
1701 if (inta & CSR_INT_BIT_FH_TX) {
1702 IWL_DEBUG_ISR("Tx interrupt\n");
1703 handled |= CSR_INT_BIT_FH_TX;
1704 /* FH finished to write, send event */
1705 priv->ucode_write_complete = 1;
1706 wake_up_interruptible(&priv->wait_command_queue);
1707 }
1708
1709 if (inta & ~handled)
1710 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1711
1712 if (inta & ~CSR_INI_SET_MASK) {
1713 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1714 inta & ~CSR_INI_SET_MASK);
1715 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
1716 }
1717
1718 /* Re-enable all interrupts */
1719 /* only Re-enable if diabled by irq */
1720 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1721 iwl4965_enable_interrupts(priv);
1722
1723 #ifdef CONFIG_IWLWIFI_DEBUG
1724 if (priv->debug_level & (IWL_DL_ISR)) {
1725 inta = iwl_read32(priv, CSR_INT);
1726 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1727 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1728 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1729 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1730 }
1731 #endif
1732 spin_unlock_irqrestore(&priv->lock, flags);
1733 }
1734
1735 static irqreturn_t iwl4965_isr(int irq, void *data)
1736 {
1737 struct iwl_priv *priv = data;
1738 u32 inta, inta_mask;
1739 u32 inta_fh;
1740 if (!priv)
1741 return IRQ_NONE;
1742
1743 spin_lock(&priv->lock);
1744
1745 /* Disable (but don't clear!) interrupts here to avoid
1746 * back-to-back ISRs and sporadic interrupts from our NIC.
1747 * If we have something to service, the tasklet will re-enable ints.
1748 * If we *don't* have something, we'll re-enable before leaving here. */
1749 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
1750 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1751
1752 /* Discover which interrupts are active/pending */
1753 inta = iwl_read32(priv, CSR_INT);
1754 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1755
1756 /* Ignore interrupt if there's nothing in NIC to service.
1757 * This may be due to IRQ shared with another device,
1758 * or due to sporadic interrupts thrown from our NIC. */
1759 if (!inta && !inta_fh) {
1760 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1761 goto none;
1762 }
1763
1764 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1765 /* Hardware disappeared. It might have already raised
1766 * an interrupt */
1767 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1768 goto unplugged;
1769 }
1770
1771 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1772 inta, inta_mask, inta_fh);
1773
1774 inta &= ~CSR_INT_BIT_SCD;
1775
1776 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
1777 if (likely(inta || inta_fh))
1778 tasklet_schedule(&priv->irq_tasklet);
1779
1780 unplugged:
1781 spin_unlock(&priv->lock);
1782 return IRQ_HANDLED;
1783
1784 none:
1785 /* re-enable interrupts here since we don't have anything to service. */
1786 /* only Re-enable if diabled by irq */
1787 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1788 iwl4965_enable_interrupts(priv);
1789 spin_unlock(&priv->lock);
1790 return IRQ_NONE;
1791 }
1792
1793 /******************************************************************************
1794 *
1795 * uCode download functions
1796 *
1797 ******************************************************************************/
1798
1799 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
1800 {
1801 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1802 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1803 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1804 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1805 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1806 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1807 }
1808
1809 static void iwl4965_nic_start(struct iwl_priv *priv)
1810 {
1811 /* Remove all resets to allow NIC to operate */
1812 iwl_write32(priv, CSR_RESET, 0);
1813 }
1814
1815
1816 /**
1817 * iwl4965_read_ucode - Read uCode images from disk file.
1818 *
1819 * Copy into buffers for card to fetch via bus-mastering
1820 */
1821 static int iwl4965_read_ucode(struct iwl_priv *priv)
1822 {
1823 struct iwl_ucode *ucode;
1824 int ret;
1825 const struct firmware *ucode_raw;
1826 const char *name = priv->cfg->fw_name;
1827 u8 *src;
1828 size_t len;
1829 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
1830
1831 /* Ask kernel firmware_class module to get the boot firmware off disk.
1832 * request_firmware() is synchronous, file is in memory on return. */
1833 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
1834 if (ret < 0) {
1835 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1836 name, ret);
1837 goto error;
1838 }
1839
1840 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1841 name, ucode_raw->size);
1842
1843 /* Make sure that we got at least our header! */
1844 if (ucode_raw->size < sizeof(*ucode)) {
1845 IWL_ERROR("File size way too small!\n");
1846 ret = -EINVAL;
1847 goto err_release;
1848 }
1849
1850 /* Data from ucode file: header followed by uCode images */
1851 ucode = (void *)ucode_raw->data;
1852
1853 ver = le32_to_cpu(ucode->ver);
1854 inst_size = le32_to_cpu(ucode->inst_size);
1855 data_size = le32_to_cpu(ucode->data_size);
1856 init_size = le32_to_cpu(ucode->init_size);
1857 init_data_size = le32_to_cpu(ucode->init_data_size);
1858 boot_size = le32_to_cpu(ucode->boot_size);
1859
1860 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
1861 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1862 inst_size);
1863 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1864 data_size);
1865 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1866 init_size);
1867 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1868 init_data_size);
1869 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1870 boot_size);
1871
1872 /* Verify size of file vs. image size info in file's header */
1873 if (ucode_raw->size < sizeof(*ucode) +
1874 inst_size + data_size + init_size +
1875 init_data_size + boot_size) {
1876
1877 IWL_DEBUG_INFO("uCode file size %d too small\n",
1878 (int)ucode_raw->size);
1879 ret = -EINVAL;
1880 goto err_release;
1881 }
1882
1883 /* Verify that uCode images will fit in card's SRAM */
1884 if (inst_size > priv->hw_params.max_inst_size) {
1885 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1886 inst_size);
1887 ret = -EINVAL;
1888 goto err_release;
1889 }
1890
1891 if (data_size > priv->hw_params.max_data_size) {
1892 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1893 data_size);
1894 ret = -EINVAL;
1895 goto err_release;
1896 }
1897 if (init_size > priv->hw_params.max_inst_size) {
1898 IWL_DEBUG_INFO
1899 ("uCode init instr len %d too large to fit in\n",
1900 init_size);
1901 ret = -EINVAL;
1902 goto err_release;
1903 }
1904 if (init_data_size > priv->hw_params.max_data_size) {
1905 IWL_DEBUG_INFO
1906 ("uCode init data len %d too large to fit in\n",
1907 init_data_size);
1908 ret = -EINVAL;
1909 goto err_release;
1910 }
1911 if (boot_size > priv->hw_params.max_bsm_size) {
1912 IWL_DEBUG_INFO
1913 ("uCode boot instr len %d too large to fit in\n",
1914 boot_size);
1915 ret = -EINVAL;
1916 goto err_release;
1917 }
1918
1919 /* Allocate ucode buffers for card's bus-master loading ... */
1920
1921 /* Runtime instructions and 2 copies of data:
1922 * 1) unmodified from disk
1923 * 2) backup cache for save/restore during power-downs */
1924 priv->ucode_code.len = inst_size;
1925 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1926
1927 priv->ucode_data.len = data_size;
1928 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1929
1930 priv->ucode_data_backup.len = data_size;
1931 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1932
1933 /* Initialization instructions and data */
1934 if (init_size && init_data_size) {
1935 priv->ucode_init.len = init_size;
1936 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1937
1938 priv->ucode_init_data.len = init_data_size;
1939 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1940
1941 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1942 goto err_pci_alloc;
1943 }
1944
1945 /* Bootstrap (instructions only, no data) */
1946 if (boot_size) {
1947 priv->ucode_boot.len = boot_size;
1948 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1949
1950 if (!priv->ucode_boot.v_addr)
1951 goto err_pci_alloc;
1952 }
1953
1954 /* Copy images into buffers for card's bus-master reads ... */
1955
1956 /* Runtime instructions (first block of data in file) */
1957 src = &ucode->data[0];
1958 len = priv->ucode_code.len;
1959 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1960 memcpy(priv->ucode_code.v_addr, src, len);
1961 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1962 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1963
1964 /* Runtime data (2nd block)
1965 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
1966 src = &ucode->data[inst_size];
1967 len = priv->ucode_data.len;
1968 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1969 memcpy(priv->ucode_data.v_addr, src, len);
1970 memcpy(priv->ucode_data_backup.v_addr, src, len);
1971
1972 /* Initialization instructions (3rd block) */
1973 if (init_size) {
1974 src = &ucode->data[inst_size + data_size];
1975 len = priv->ucode_init.len;
1976 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1977 len);
1978 memcpy(priv->ucode_init.v_addr, src, len);
1979 }
1980
1981 /* Initialization data (4th block) */
1982 if (init_data_size) {
1983 src = &ucode->data[inst_size + data_size + init_size];
1984 len = priv->ucode_init_data.len;
1985 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1986 len);
1987 memcpy(priv->ucode_init_data.v_addr, src, len);
1988 }
1989
1990 /* Bootstrap instructions (5th block) */
1991 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1992 len = priv->ucode_boot.len;
1993 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1994 memcpy(priv->ucode_boot.v_addr, src, len);
1995
1996 /* We have our copies now, allow OS release its copies */
1997 release_firmware(ucode_raw);
1998 return 0;
1999
2000 err_pci_alloc:
2001 IWL_ERROR("failed to allocate pci memory\n");
2002 ret = -ENOMEM;
2003 iwl4965_dealloc_ucode_pci(priv);
2004
2005 err_release:
2006 release_firmware(ucode_raw);
2007
2008 error:
2009 return ret;
2010 }
2011
2012 /**
2013 * iwl_alive_start - called after REPLY_ALIVE notification received
2014 * from protocol/runtime uCode (initialization uCode's
2015 * Alive gets handled by iwl_init_alive_start()).
2016 */
2017 static void iwl_alive_start(struct iwl_priv *priv)
2018 {
2019 int ret = 0;
2020
2021 IWL_DEBUG_INFO("Runtime Alive received.\n");
2022
2023 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2024 /* We had an error bringing up the hardware, so take it
2025 * all the way back down so we can try again */
2026 IWL_DEBUG_INFO("Alive failed.\n");
2027 goto restart;
2028 }
2029
2030 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2031 * This is a paranoid check, because we would not have gotten the
2032 * "runtime" alive if code weren't properly loaded. */
2033 if (iwl_verify_ucode(priv)) {
2034 /* Runtime instruction load was bad;
2035 * take it all the way back down so we can try again */
2036 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
2037 goto restart;
2038 }
2039
2040 iwl_clear_stations_table(priv);
2041 ret = priv->cfg->ops->lib->alive_notify(priv);
2042 if (ret) {
2043 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
2044 ret);
2045 goto restart;
2046 }
2047
2048 /* After the ALIVE response, we can send host commands to 4965 uCode */
2049 set_bit(STATUS_ALIVE, &priv->status);
2050
2051 if (iwl_is_rfkill(priv))
2052 return;
2053
2054 ieee80211_wake_queues(priv->hw);
2055
2056 priv->active_rate = priv->rates_mask;
2057 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2058
2059 if (iwl_is_associated(priv)) {
2060 struct iwl_rxon_cmd *active_rxon =
2061 (struct iwl_rxon_cmd *)&priv->active_rxon;
2062
2063 memcpy(&priv->staging_rxon, &priv->active_rxon,
2064 sizeof(priv->staging_rxon));
2065 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2066 } else {
2067 /* Initialize our rx_config data */
2068 iwl4965_connection_init_rx_config(priv);
2069 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2070 }
2071
2072 /* Configure Bluetooth device coexistence support */
2073 iwl4965_send_bt_config(priv);
2074
2075 iwl_reset_run_time_calib(priv);
2076
2077 /* Configure the adapter for unassociated operation */
2078 iwl4965_commit_rxon(priv);
2079
2080 /* At this point, the NIC is initialized and operational */
2081 iwl_rf_kill_ct_config(priv);
2082
2083 iwl_leds_register(priv);
2084
2085 IWL_DEBUG_INFO("ALIVE processing complete.\n");
2086 set_bit(STATUS_READY, &priv->status);
2087 wake_up_interruptible(&priv->wait_command_queue);
2088
2089 if (priv->error_recovering)
2090 iwl4965_error_recovery(priv);
2091
2092 iwl_power_update_mode(priv, 1);
2093 ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2094
2095 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2096 iwl4965_set_mode(priv, priv->iw_mode);
2097
2098 return;
2099
2100 restart:
2101 queue_work(priv->workqueue, &priv->restart);
2102 }
2103
2104 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2105
2106 static void __iwl4965_down(struct iwl_priv *priv)
2107 {
2108 unsigned long flags;
2109 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2110
2111 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2112
2113 if (!exit_pending)
2114 set_bit(STATUS_EXIT_PENDING, &priv->status);
2115
2116 iwl_leds_unregister(priv);
2117
2118 iwl_clear_stations_table(priv);
2119
2120 /* Unblock any waiting calls */
2121 wake_up_interruptible_all(&priv->wait_command_queue);
2122
2123 /* Wipe out the EXIT_PENDING status bit if we are not actually
2124 * exiting the module */
2125 if (!exit_pending)
2126 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2127
2128 /* stop and reset the on-board processor */
2129 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2130
2131 /* tell the device to stop sending interrupts */
2132 spin_lock_irqsave(&priv->lock, flags);
2133 iwl4965_disable_interrupts(priv);
2134 spin_unlock_irqrestore(&priv->lock, flags);
2135 iwl_synchronize_irq(priv);
2136
2137 if (priv->mac80211_registered)
2138 ieee80211_stop_queues(priv->hw);
2139
2140 /* If we have not previously called iwl4965_init() then
2141 * clear all bits but the RF Kill and SUSPEND bits and return */
2142 if (!iwl_is_init(priv)) {
2143 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2144 STATUS_RF_KILL_HW |
2145 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2146 STATUS_RF_KILL_SW |
2147 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2148 STATUS_GEO_CONFIGURED |
2149 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2150 STATUS_IN_SUSPEND |
2151 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2152 STATUS_EXIT_PENDING;
2153 goto exit;
2154 }
2155
2156 /* ...otherwise clear out all the status bits but the RF Kill and
2157 * SUSPEND bits and continue taking the NIC down. */
2158 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2159 STATUS_RF_KILL_HW |
2160 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2161 STATUS_RF_KILL_SW |
2162 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2163 STATUS_GEO_CONFIGURED |
2164 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2165 STATUS_IN_SUSPEND |
2166 test_bit(STATUS_FW_ERROR, &priv->status) <<
2167 STATUS_FW_ERROR |
2168 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2169 STATUS_EXIT_PENDING;
2170
2171 spin_lock_irqsave(&priv->lock, flags);
2172 iwl_clear_bit(priv, CSR_GP_CNTRL,
2173 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2174 spin_unlock_irqrestore(&priv->lock, flags);
2175
2176 iwl_txq_ctx_stop(priv);
2177 iwl_rxq_stop(priv);
2178
2179 spin_lock_irqsave(&priv->lock, flags);
2180 if (!iwl_grab_nic_access(priv)) {
2181 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2182 APMG_CLK_VAL_DMA_CLK_RQT);
2183 iwl_release_nic_access(priv);
2184 }
2185 spin_unlock_irqrestore(&priv->lock, flags);
2186
2187 udelay(5);
2188
2189 /* FIXME: apm_ops.suspend(priv) */
2190 if (exit_pending || test_bit(STATUS_IN_SUSPEND, &priv->status))
2191 priv->cfg->ops->lib->apm_ops.stop(priv);
2192 else
2193 priv->cfg->ops->lib->apm_ops.reset(priv);
2194 priv->cfg->ops->lib->free_shared_mem(priv);
2195
2196 exit:
2197 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2198
2199 if (priv->ibss_beacon)
2200 dev_kfree_skb(priv->ibss_beacon);
2201 priv->ibss_beacon = NULL;
2202
2203 /* clear out any free frames */
2204 iwl_clear_free_frames(priv);
2205 }
2206
2207 static void iwl4965_down(struct iwl_priv *priv)
2208 {
2209 mutex_lock(&priv->mutex);
2210 __iwl4965_down(priv);
2211 mutex_unlock(&priv->mutex);
2212
2213 iwl_cancel_deferred_work(priv);
2214 }
2215
2216 #define MAX_HW_RESTARTS 5
2217
2218 static int __iwl4965_up(struct iwl_priv *priv)
2219 {
2220 int i;
2221 int ret;
2222
2223 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2224 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2225 return -EIO;
2226 }
2227
2228 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2229 IWL_ERROR("ucode not available for device bringup\n");
2230 return -EIO;
2231 }
2232
2233 /* If platform's RF_KILL switch is NOT set to KILL */
2234 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2235 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2236 else
2237 set_bit(STATUS_RF_KILL_HW, &priv->status);
2238
2239 if (iwl_is_rfkill(priv)) {
2240 iwl4965_enable_interrupts(priv);
2241 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2242 test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2243 return 0;
2244 }
2245
2246 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2247
2248 ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
2249 if (ret) {
2250 IWL_ERROR("Unable to allocate shared memory\n");
2251 return ret;
2252 }
2253
2254 ret = iwl_hw_nic_init(priv);
2255 if (ret) {
2256 IWL_ERROR("Unable to init nic\n");
2257 return ret;
2258 }
2259
2260 /* make sure rfkill handshake bits are cleared */
2261 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2262 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2263 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2264
2265 /* clear (again), then enable host interrupts */
2266 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2267 iwl4965_enable_interrupts(priv);
2268
2269 /* really make sure rfkill handshake bits are cleared */
2270 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2271 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2272
2273 /* Copy original ucode data image from disk into backup cache.
2274 * This will be used to initialize the on-board processor's
2275 * data SRAM for a clean start when the runtime program first loads. */
2276 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2277 priv->ucode_data.len);
2278
2279 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2280
2281 iwl_clear_stations_table(priv);
2282
2283 /* load bootstrap state machine,
2284 * load bootstrap program into processor's memory,
2285 * prepare to load the "initialize" uCode */
2286 ret = priv->cfg->ops->lib->load_ucode(priv);
2287
2288 if (ret) {
2289 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2290 continue;
2291 }
2292
2293 /* Clear out the uCode error bit if it is set */
2294 clear_bit(STATUS_FW_ERROR, &priv->status);
2295
2296 /* start card; "initialize" will load runtime ucode */
2297 iwl4965_nic_start(priv);
2298
2299 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2300
2301 return 0;
2302 }
2303
2304 set_bit(STATUS_EXIT_PENDING, &priv->status);
2305 __iwl4965_down(priv);
2306 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2307
2308 /* tried to restart and config the device for as long as our
2309 * patience could withstand */
2310 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2311 return -EIO;
2312 }
2313
2314
2315 /*****************************************************************************
2316 *
2317 * Workqueue callbacks
2318 *
2319 *****************************************************************************/
2320
2321 static void iwl_bg_init_alive_start(struct work_struct *data)
2322 {
2323 struct iwl_priv *priv =
2324 container_of(data, struct iwl_priv, init_alive_start.work);
2325
2326 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2327 return;
2328
2329 mutex_lock(&priv->mutex);
2330 priv->cfg->ops->lib->init_alive_start(priv);
2331 mutex_unlock(&priv->mutex);
2332 }
2333
2334 static void iwl_bg_alive_start(struct work_struct *data)
2335 {
2336 struct iwl_priv *priv =
2337 container_of(data, struct iwl_priv, alive_start.work);
2338
2339 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2340 return;
2341
2342 mutex_lock(&priv->mutex);
2343 iwl_alive_start(priv);
2344 mutex_unlock(&priv->mutex);
2345 }
2346
2347 static void iwl4965_bg_rf_kill(struct work_struct *work)
2348 {
2349 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2350
2351 wake_up_interruptible(&priv->wait_command_queue);
2352
2353 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2354 return;
2355
2356 mutex_lock(&priv->mutex);
2357
2358 if (!iwl_is_rfkill(priv)) {
2359 IWL_DEBUG(IWL_DL_RF_KILL,
2360 "HW and/or SW RF Kill no longer active, restarting "
2361 "device\n");
2362 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2363 queue_work(priv->workqueue, &priv->restart);
2364 } else {
2365 /* make sure mac80211 stop sending Tx frame */
2366 if (priv->mac80211_registered)
2367 ieee80211_stop_queues(priv->hw);
2368
2369 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2370 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2371 "disabled by SW switch\n");
2372 else
2373 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2374 "Kill switch must be turned off for "
2375 "wireless networking to work.\n");
2376 }
2377 mutex_unlock(&priv->mutex);
2378 iwl_rfkill_set_hw_state(priv);
2379 }
2380
2381 static void iwl4965_bg_set_monitor(struct work_struct *work)
2382 {
2383 struct iwl_priv *priv = container_of(work,
2384 struct iwl_priv, set_monitor);
2385 int ret;
2386
2387 IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
2388
2389 mutex_lock(&priv->mutex);
2390
2391 ret = iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR);
2392
2393 if (ret) {
2394 if (ret == -EAGAIN)
2395 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
2396 else
2397 IWL_ERROR("iwl4965_set_mode() failed ret = %d\n", ret);
2398 }
2399
2400 mutex_unlock(&priv->mutex);
2401 }
2402
2403 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2404 {
2405 struct iwl_priv *priv = container_of(work, struct iwl_priv,
2406 run_time_calib_work);
2407
2408 mutex_lock(&priv->mutex);
2409
2410 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2411 test_bit(STATUS_SCANNING, &priv->status)) {
2412 mutex_unlock(&priv->mutex);
2413 return;
2414 }
2415
2416 if (priv->start_calib) {
2417 iwl_chain_noise_calibration(priv, &priv->statistics);
2418
2419 iwl_sensitivity_calibration(priv, &priv->statistics);
2420 }
2421
2422 mutex_unlock(&priv->mutex);
2423 return;
2424 }
2425
2426 static void iwl4965_bg_up(struct work_struct *data)
2427 {
2428 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2429
2430 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2431 return;
2432
2433 mutex_lock(&priv->mutex);
2434 __iwl4965_up(priv);
2435 mutex_unlock(&priv->mutex);
2436 iwl_rfkill_set_hw_state(priv);
2437 }
2438
2439 static void iwl4965_bg_restart(struct work_struct *data)
2440 {
2441 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2442
2443 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2444 return;
2445
2446 iwl4965_down(priv);
2447 queue_work(priv->workqueue, &priv->up);
2448 }
2449
2450 static void iwl4965_bg_rx_replenish(struct work_struct *data)
2451 {
2452 struct iwl_priv *priv =
2453 container_of(data, struct iwl_priv, rx_replenish);
2454
2455 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2456 return;
2457
2458 mutex_lock(&priv->mutex);
2459 iwl_rx_replenish(priv);
2460 mutex_unlock(&priv->mutex);
2461 }
2462
2463 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2464
2465 static void iwl4965_post_associate(struct iwl_priv *priv)
2466 {
2467 struct ieee80211_conf *conf = NULL;
2468 int ret = 0;
2469 DECLARE_MAC_BUF(mac);
2470 unsigned long flags;
2471
2472 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2473 IWL_ERROR("%s Should not be called in AP mode\n", __func__);
2474 return;
2475 }
2476
2477 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
2478 priv->assoc_id,
2479 print_mac(mac, priv->active_rxon.bssid_addr));
2480
2481
2482 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2483 return;
2484
2485
2486 if (!priv->vif || !priv->is_open)
2487 return;
2488
2489 iwl_power_cancel_timeout(priv);
2490 iwl_scan_cancel_timeout(priv, 200);
2491
2492 conf = ieee80211_get_hw_conf(priv->hw);
2493
2494 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2495 iwl4965_commit_rxon(priv);
2496
2497 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2498 iwl4965_setup_rxon_timing(priv);
2499 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2500 sizeof(priv->rxon_timing), &priv->rxon_timing);
2501 if (ret)
2502 IWL_WARNING("REPLY_RXON_TIMING failed - "
2503 "Attempting to continue.\n");
2504
2505 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2506
2507 if (priv->current_ht_config.is_ht)
2508 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2509
2510 iwl_set_rxon_chain(priv);
2511 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2512
2513 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2514 priv->assoc_id, priv->beacon_int);
2515
2516 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2517 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2518 else
2519 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2520
2521 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2522 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2523 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2524 else
2525 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2526
2527 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2528 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2529
2530 }
2531
2532 iwl4965_commit_rxon(priv);
2533
2534 switch (priv->iw_mode) {
2535 case IEEE80211_IF_TYPE_STA:
2536 break;
2537
2538 case IEEE80211_IF_TYPE_IBSS:
2539
2540 /* assume default assoc id */
2541 priv->assoc_id = 1;
2542
2543 iwl_rxon_add_station(priv, priv->bssid, 0);
2544 iwl4965_send_beacon_cmd(priv);
2545
2546 break;
2547
2548 default:
2549 IWL_ERROR("%s Should not be called in %d mode\n",
2550 __func__, priv->iw_mode);
2551 break;
2552 }
2553
2554 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2555 priv->assoc_station_added = 1;
2556
2557 spin_lock_irqsave(&priv->lock, flags);
2558 iwl_activate_qos(priv, 0);
2559 spin_unlock_irqrestore(&priv->lock, flags);
2560
2561 /* the chain noise calibration will enabled PM upon completion
2562 * If chain noise has already been run, then we need to enable
2563 * power management here */
2564 if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
2565 iwl_power_enable_management(priv);
2566
2567 /* Enable Rx differential gain and sensitivity calibrations */
2568 iwl_chain_noise_reset(priv);
2569 priv->start_calib = 1;
2570
2571 /* we have just associated, don't start scan too early */
2572 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
2573 }
2574
2575 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
2576
2577 static void iwl_bg_scan_completed(struct work_struct *work)
2578 {
2579 struct iwl_priv *priv =
2580 container_of(work, struct iwl_priv, scan_completed);
2581
2582 IWL_DEBUG_SCAN("SCAN complete scan\n");
2583
2584 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2585 return;
2586
2587 if (test_bit(STATUS_CONF_PENDING, &priv->status))
2588 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
2589
2590 ieee80211_scan_completed(priv->hw);
2591
2592 /* Since setting the TXPOWER may have been deferred while
2593 * performing the scan, fire one off */
2594 mutex_lock(&priv->mutex);
2595 iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
2596 mutex_unlock(&priv->mutex);
2597 }
2598
2599 /*****************************************************************************
2600 *
2601 * mac80211 entry point functions
2602 *
2603 *****************************************************************************/
2604
2605 #define UCODE_READY_TIMEOUT (4 * HZ)
2606
2607 static int iwl4965_mac_start(struct ieee80211_hw *hw)
2608 {
2609 struct iwl_priv *priv = hw->priv;
2610 int ret;
2611 u16 pci_cmd;
2612
2613 IWL_DEBUG_MAC80211("enter\n");
2614
2615 if (pci_enable_device(priv->pci_dev)) {
2616 IWL_ERROR("Fail to pci_enable_device\n");
2617 return -ENODEV;
2618 }
2619 pci_restore_state(priv->pci_dev);
2620 pci_enable_msi(priv->pci_dev);
2621
2622 /* enable interrupts if needed: hw bug w/a */
2623 pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
2624 if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
2625 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
2626 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
2627 }
2628
2629 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
2630 DRV_NAME, priv);
2631 if (ret) {
2632 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2633 goto out_disable_msi;
2634 }
2635
2636 /* we should be verifying the device is ready to be opened */
2637 mutex_lock(&priv->mutex);
2638
2639 memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2640 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2641 * ucode filename and max sizes are card-specific. */
2642
2643 if (!priv->ucode_code.len) {
2644 ret = iwl4965_read_ucode(priv);
2645 if (ret) {
2646 IWL_ERROR("Could not read microcode: %d\n", ret);
2647 mutex_unlock(&priv->mutex);
2648 goto out_release_irq;
2649 }
2650 }
2651
2652 ret = __iwl4965_up(priv);
2653
2654 mutex_unlock(&priv->mutex);
2655
2656 iwl_rfkill_set_hw_state(priv);
2657
2658 if (ret)
2659 goto out_release_irq;
2660
2661 if (iwl_is_rfkill(priv))
2662 goto out;
2663
2664 IWL_DEBUG_INFO("Start UP work done.\n");
2665
2666 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2667 return 0;
2668
2669 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2670 * mac80211 will not be run successfully. */
2671 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2672 test_bit(STATUS_READY, &priv->status),
2673 UCODE_READY_TIMEOUT);
2674 if (!ret) {
2675 if (!test_bit(STATUS_READY, &priv->status)) {
2676 IWL_ERROR("START_ALIVE timeout after %dms.\n",
2677 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2678 ret = -ETIMEDOUT;
2679 goto out_release_irq;
2680 }
2681 }
2682
2683 out:
2684 priv->is_open = 1;
2685 IWL_DEBUG_MAC80211("leave\n");
2686 return 0;
2687
2688 out_release_irq:
2689 free_irq(priv->pci_dev->irq, priv);
2690 out_disable_msi:
2691 pci_disable_msi(priv->pci_dev);
2692 pci_disable_device(priv->pci_dev);
2693 priv->is_open = 0;
2694 IWL_DEBUG_MAC80211("leave - failed\n");
2695 return ret;
2696 }
2697
2698 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
2699 {
2700 struct iwl_priv *priv = hw->priv;
2701
2702 IWL_DEBUG_MAC80211("enter\n");
2703
2704 if (!priv->is_open) {
2705 IWL_DEBUG_MAC80211("leave - skip\n");
2706 return;
2707 }
2708
2709 priv->is_open = 0;
2710
2711 if (iwl_is_ready_rf(priv)) {
2712 /* stop mac, cancel any scan request and clear
2713 * RXON_FILTER_ASSOC_MSK BIT
2714 */
2715 mutex_lock(&priv->mutex);
2716 iwl_scan_cancel_timeout(priv, 100);
2717 mutex_unlock(&priv->mutex);
2718 }
2719
2720 iwl4965_down(priv);
2721
2722 flush_workqueue(priv->workqueue);
2723 free_irq(priv->pci_dev->irq, priv);
2724 pci_disable_msi(priv->pci_dev);
2725 pci_save_state(priv->pci_dev);
2726 pci_disable_device(priv->pci_dev);
2727
2728 IWL_DEBUG_MAC80211("leave\n");
2729 }
2730
2731 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2732 {
2733 struct iwl_priv *priv = hw->priv;
2734
2735 IWL_DEBUG_MACDUMP("enter\n");
2736
2737 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2738 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2739
2740 if (iwl_tx_skb(priv, skb))
2741 dev_kfree_skb_any(skb);
2742
2743 IWL_DEBUG_MACDUMP("leave\n");
2744 return 0;
2745 }
2746
2747 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
2748 struct ieee80211_if_init_conf *conf)
2749 {
2750 struct iwl_priv *priv = hw->priv;
2751 unsigned long flags;
2752 DECLARE_MAC_BUF(mac);
2753
2754 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2755
2756 if (priv->vif) {
2757 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2758 return -EOPNOTSUPP;
2759 }
2760
2761 spin_lock_irqsave(&priv->lock, flags);
2762 priv->vif = conf->vif;
2763
2764 spin_unlock_irqrestore(&priv->lock, flags);
2765
2766 mutex_lock(&priv->mutex);
2767
2768 if (conf->mac_addr) {
2769 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
2770 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2771 }
2772
2773 if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
2774 /* we are not ready, will run again when ready */
2775 set_bit(STATUS_MODE_PENDING, &priv->status);
2776
2777 mutex_unlock(&priv->mutex);
2778
2779 IWL_DEBUG_MAC80211("leave\n");
2780 return 0;
2781 }
2782
2783 /**
2784 * iwl4965_mac_config - mac80211 config callback
2785 *
2786 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2787 * be set inappropriately and the driver currently sets the hardware up to
2788 * use it whenever needed.
2789 */
2790 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
2791 {
2792 struct iwl_priv *priv = hw->priv;
2793 const struct iwl_channel_info *ch_info;
2794 unsigned long flags;
2795 int ret = 0;
2796 u16 channel;
2797
2798 mutex_lock(&priv->mutex);
2799 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2800
2801 if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2802 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2803 goto out;
2804 }
2805
2806 if (!conf->radio_enabled)
2807 iwl_radio_kill_sw_disable_radio(priv);
2808
2809 if (!iwl_is_ready(priv)) {
2810 IWL_DEBUG_MAC80211("leave - not ready\n");
2811 ret = -EIO;
2812 goto out;
2813 }
2814
2815 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2816 test_bit(STATUS_SCANNING, &priv->status))) {
2817 IWL_DEBUG_MAC80211("leave - scanning\n");
2818 set_bit(STATUS_CONF_PENDING, &priv->status);
2819 mutex_unlock(&priv->mutex);
2820 return 0;
2821 }
2822
2823 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2824 ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2825 if (!is_channel_valid(ch_info)) {
2826 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2827 ret = -EINVAL;
2828 goto out;
2829 }
2830
2831 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
2832 !is_channel_ibss(ch_info)) {
2833 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2834 conf->channel->hw_value, conf->channel->band);
2835 ret = -EINVAL;
2836 goto out;
2837 }
2838
2839 spin_lock_irqsave(&priv->lock, flags);
2840
2841
2842 /* if we are switching from ht to 2.4 clear flags
2843 * from any ht related info since 2.4 does not
2844 * support ht */
2845 if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2846 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2847 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2848 #endif
2849 )
2850 priv->staging_rxon.flags = 0;
2851
2852 iwl_set_rxon_channel(priv, conf->channel);
2853
2854 iwl_set_flags_for_band(priv, conf->channel->band);
2855
2856 /* The list of supported rates and rate mask can be different
2857 * for each band; since the band may have changed, reset
2858 * the rate mask to what mac80211 lists */
2859 iwl4965_set_rate(priv);
2860
2861 spin_unlock_irqrestore(&priv->lock, flags);
2862
2863 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2864 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2865 iwl4965_hw_channel_switch(priv, conf->channel);
2866 goto out;
2867 }
2868 #endif
2869
2870 if (!conf->radio_enabled) {
2871 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2872 goto out;
2873 }
2874
2875 if (iwl_is_rfkill(priv)) {
2876 IWL_DEBUG_MAC80211("leave - RF kill\n");
2877 ret = -EIO;
2878 goto out;
2879 }
2880
2881 IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2882 priv->tx_power_user_lmt, conf->power_level);
2883
2884 iwl_set_tx_power(priv, conf->power_level, false);
2885
2886 iwl4965_set_rate(priv);
2887
2888 if (memcmp(&priv->active_rxon,
2889 &priv->staging_rxon, sizeof(priv->staging_rxon)))
2890 iwl4965_commit_rxon(priv);
2891 else
2892 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2893
2894 IWL_DEBUG_MAC80211("leave\n");
2895
2896 out:
2897 clear_bit(STATUS_CONF_PENDING, &priv->status);
2898 mutex_unlock(&priv->mutex);
2899 return ret;
2900 }
2901
2902 static void iwl4965_config_ap(struct iwl_priv *priv)
2903 {
2904 int ret = 0;
2905 unsigned long flags;
2906
2907 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2908 return;
2909
2910 /* The following should be done only at AP bring up */
2911 if (!(iwl_is_associated(priv))) {
2912
2913 /* RXON - unassoc (to set timing command) */
2914 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2915 iwl4965_commit_rxon(priv);
2916
2917 /* RXON Timing */
2918 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2919 iwl4965_setup_rxon_timing(priv);
2920 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2921 sizeof(priv->rxon_timing), &priv->rxon_timing);
2922 if (ret)
2923 IWL_WARNING("REPLY_RXON_TIMING failed - "
2924 "Attempting to continue.\n");
2925
2926 iwl_set_rxon_chain(priv);
2927
2928 /* FIXME: what should be the assoc_id for AP? */
2929 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2930 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2931 priv->staging_rxon.flags |=
2932 RXON_FLG_SHORT_PREAMBLE_MSK;
2933 else
2934 priv->staging_rxon.flags &=
2935 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2936
2937 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2938 if (priv->assoc_capability &
2939 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2940 priv->staging_rxon.flags |=
2941 RXON_FLG_SHORT_SLOT_MSK;
2942 else
2943 priv->staging_rxon.flags &=
2944 ~RXON_FLG_SHORT_SLOT_MSK;
2945
2946 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2947 priv->staging_rxon.flags &=
2948 ~RXON_FLG_SHORT_SLOT_MSK;
2949 }
2950 /* restore RXON assoc */
2951 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2952 iwl4965_commit_rxon(priv);
2953 spin_lock_irqsave(&priv->lock, flags);
2954 iwl_activate_qos(priv, 1);
2955 spin_unlock_irqrestore(&priv->lock, flags);
2956 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2957 }
2958 iwl4965_send_beacon_cmd(priv);
2959
2960 /* FIXME - we need to add code here to detect a totally new
2961 * configuration, reset the AP, unassoc, rxon timing, assoc,
2962 * clear sta table, add BCAST sta... */
2963 }
2964
2965 /* temporary */
2966 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb);
2967
2968 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
2969 struct ieee80211_vif *vif,
2970 struct ieee80211_if_conf *conf)
2971 {
2972 struct iwl_priv *priv = hw->priv;
2973 DECLARE_MAC_BUF(mac);
2974 unsigned long flags;
2975 int rc;
2976
2977 if (conf == NULL)
2978 return -EIO;
2979
2980 if (priv->vif != vif) {
2981 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2982 return 0;
2983 }
2984
2985 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
2986 conf->changed & IEEE80211_IFCC_BEACON) {
2987 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2988 if (!beacon)
2989 return -ENOMEM;
2990 rc = iwl4965_mac_beacon_update(hw, beacon);
2991 if (rc)
2992 return rc;
2993 }
2994
2995 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
2996 (!conf->ssid_len)) {
2997 IWL_DEBUG_MAC80211
2998 ("Leaving in AP mode because HostAPD is not ready.\n");
2999 return 0;
3000 }
3001
3002 if (!iwl_is_alive(priv))
3003 return -EAGAIN;
3004
3005 mutex_lock(&priv->mutex);
3006
3007 if (conf->bssid)
3008 IWL_DEBUG_MAC80211("bssid: %s\n",
3009 print_mac(mac, conf->bssid));
3010
3011 /*
3012 * very dubious code was here; the probe filtering flag is never set:
3013 *
3014 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
3015 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
3016 */
3017
3018 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
3019 if (!conf->bssid) {
3020 conf->bssid = priv->mac_addr;
3021 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
3022 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
3023 print_mac(mac, conf->bssid));
3024 }
3025 if (priv->ibss_beacon)
3026 dev_kfree_skb(priv->ibss_beacon);
3027
3028 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
3029 }
3030
3031 if (iwl_is_rfkill(priv))
3032 goto done;
3033
3034 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
3035 !is_multicast_ether_addr(conf->bssid)) {
3036 /* If there is currently a HW scan going on in the background
3037 * then we need to cancel it else the RXON below will fail. */
3038 if (iwl_scan_cancel_timeout(priv, 100)) {
3039 IWL_WARNING("Aborted scan still in progress "
3040 "after 100ms\n");
3041 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
3042 mutex_unlock(&priv->mutex);
3043 return -EAGAIN;
3044 }
3045 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
3046
3047 /* TODO: Audit driver for usage of these members and see
3048 * if mac80211 deprecates them (priv->bssid looks like it
3049 * shouldn't be there, but I haven't scanned the IBSS code
3050 * to verify) - jpk */
3051 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
3052
3053 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3054 iwl4965_config_ap(priv);
3055 else {
3056 rc = iwl4965_commit_rxon(priv);
3057 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
3058 iwl_rxon_add_station(
3059 priv, priv->active_rxon.bssid_addr, 1);
3060 }
3061
3062 } else {
3063 iwl_scan_cancel_timeout(priv, 100);
3064 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3065 iwl4965_commit_rxon(priv);
3066 }
3067
3068 done:
3069 spin_lock_irqsave(&priv->lock, flags);
3070 if (!conf->ssid_len)
3071 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3072 else
3073 memcpy(priv->essid, conf->ssid, conf->ssid_len);
3074
3075 priv->essid_len = conf->ssid_len;
3076 spin_unlock_irqrestore(&priv->lock, flags);
3077
3078 IWL_DEBUG_MAC80211("leave\n");
3079 mutex_unlock(&priv->mutex);
3080
3081 return 0;
3082 }
3083
3084 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
3085 unsigned int changed_flags,
3086 unsigned int *total_flags,
3087 int mc_count, struct dev_addr_list *mc_list)
3088 {
3089 struct iwl_priv *priv = hw->priv;
3090
3091 if (changed_flags & (*total_flags) & FIF_OTHER_BSS) {
3092 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
3093 IEEE80211_IF_TYPE_MNTR,
3094 changed_flags, *total_flags);
3095 /* queue work 'cuz mac80211 is holding a lock which
3096 * prevents us from issuing (synchronous) f/w cmds */
3097 queue_work(priv->workqueue, &priv->set_monitor);
3098 }
3099 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI |
3100 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3101 }
3102
3103 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
3104 struct ieee80211_if_init_conf *conf)
3105 {
3106 struct iwl_priv *priv = hw->priv;
3107
3108 IWL_DEBUG_MAC80211("enter\n");
3109
3110 mutex_lock(&priv->mutex);
3111
3112 if (iwl_is_ready_rf(priv)) {
3113 iwl_scan_cancel_timeout(priv, 100);
3114 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3115 iwl4965_commit_rxon(priv);
3116 }
3117 if (priv->vif == conf->vif) {
3118 priv->vif = NULL;
3119 memset(priv->bssid, 0, ETH_ALEN);
3120 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3121 priv->essid_len = 0;
3122 }
3123 mutex_unlock(&priv->mutex);
3124
3125 IWL_DEBUG_MAC80211("leave\n");
3126
3127 }
3128
3129 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3130 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
3131 struct ieee80211_vif *vif,
3132 struct ieee80211_bss_conf *bss_conf,
3133 u32 changes)
3134 {
3135 struct iwl_priv *priv = hw->priv;
3136
3137 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
3138
3139 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3140 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
3141 bss_conf->use_short_preamble);
3142 if (bss_conf->use_short_preamble)
3143 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3144 else
3145 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3146 }
3147
3148 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3149 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3150 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3151 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3152 else
3153 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3154 }
3155
3156 if (changes & BSS_CHANGED_HT) {
3157 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
3158 iwl4965_ht_conf(priv, bss_conf);
3159 iwl_set_rxon_chain(priv);
3160 }
3161
3162 if (changes & BSS_CHANGED_ASSOC) {
3163 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3164 /* This should never happen as this function should
3165 * never be called from interrupt context. */
3166 if (WARN_ON_ONCE(in_interrupt()))
3167 return;
3168 if (bss_conf->assoc) {
3169 priv->assoc_id = bss_conf->aid;
3170 priv->beacon_int = bss_conf->beacon_int;
3171 priv->power_data.dtim_period = bss_conf->dtim_period;
3172 priv->timestamp = bss_conf->timestamp;
3173 priv->assoc_capability = bss_conf->assoc_capability;
3174 priv->next_scan_jiffies = jiffies +
3175 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3176 mutex_lock(&priv->mutex);
3177 iwl4965_post_associate(priv);
3178 mutex_unlock(&priv->mutex);
3179 } else {
3180 priv->assoc_id = 0;
3181 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3182 }
3183 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3184 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3185 iwl_send_rxon_assoc(priv);
3186 }
3187
3188 }
3189
3190 static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t ssid_len)
3191 {
3192 int ret;
3193 unsigned long flags;
3194 struct iwl_priv *priv = hw->priv;
3195
3196 IWL_DEBUG_MAC80211("enter\n");
3197
3198 mutex_lock(&priv->mutex);
3199 spin_lock_irqsave(&priv->lock, flags);
3200
3201 if (!iwl_is_ready_rf(priv)) {
3202 ret = -EIO;
3203 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3204 goto out_unlock;
3205 }
3206
3207 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
3208 ret = -EIO;
3209 IWL_ERROR("ERROR: APs don't scan\n");
3210 goto out_unlock;
3211 }
3212
3213 /* we don't schedule scan within next_scan_jiffies period */
3214 if (priv->next_scan_jiffies &&
3215 time_after(priv->next_scan_jiffies, jiffies)) {
3216 IWL_DEBUG_SCAN("scan rejected: within next scan period\n");
3217 ret = -EAGAIN;
3218 goto out_unlock;
3219 }
3220 /* if we just finished scan ask for delay */
3221 if (iwl_is_associated(priv) && priv->last_scan_jiffies &&
3222 time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN, jiffies)) {
3223 IWL_DEBUG_SCAN("scan rejected: within previous scan period\n");
3224 ret = -EAGAIN;
3225 goto out_unlock;
3226 }
3227 if (ssid_len) {
3228 priv->one_direct_scan = 1;
3229 priv->direct_ssid_len = min_t(u8, ssid_len, IW_ESSID_MAX_SIZE);
3230 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3231 } else {
3232 priv->one_direct_scan = 0;
3233 }
3234
3235 ret = iwl_scan_initiate(priv);
3236
3237 IWL_DEBUG_MAC80211("leave\n");
3238
3239 out_unlock:
3240 spin_unlock_irqrestore(&priv->lock, flags);
3241 mutex_unlock(&priv->mutex);
3242
3243 return ret;
3244 }
3245
3246 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
3247 struct ieee80211_key_conf *keyconf, const u8 *addr,
3248 u32 iv32, u16 *phase1key)
3249 {
3250 struct iwl_priv *priv = hw->priv;
3251 u8 sta_id = IWL_INVALID_STATION;
3252 unsigned long flags;
3253 __le16 key_flags = 0;
3254 int i;
3255 DECLARE_MAC_BUF(mac);
3256
3257 IWL_DEBUG_MAC80211("enter\n");
3258
3259 sta_id = iwl_find_station(priv, addr);
3260 if (sta_id == IWL_INVALID_STATION) {
3261 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3262 print_mac(mac, addr));
3263 return;
3264 }
3265
3266 iwl_scan_cancel_timeout(priv, 100);
3267
3268 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
3269 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
3270 key_flags &= ~STA_KEY_FLG_INVALID;
3271
3272 if (sta_id == priv->hw_params.bcast_sta_id)
3273 key_flags |= STA_KEY_MULTICAST_MSK;
3274
3275 spin_lock_irqsave(&priv->sta_lock, flags);
3276
3277 priv->stations[sta_id].sta.key.key_flags = key_flags;
3278 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
3279
3280 for (i = 0; i < 5; i++)
3281 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
3282 cpu_to_le16(phase1key[i]);
3283
3284 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
3285 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3286
3287 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3288
3289 spin_unlock_irqrestore(&priv->sta_lock, flags);
3290
3291 IWL_DEBUG_MAC80211("leave\n");
3292 }
3293
3294 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3295 const u8 *local_addr, const u8 *addr,
3296 struct ieee80211_key_conf *key)
3297 {
3298 struct iwl_priv *priv = hw->priv;
3299 DECLARE_MAC_BUF(mac);
3300 int ret = 0;
3301 u8 sta_id = IWL_INVALID_STATION;
3302 u8 is_default_wep_key = 0;
3303
3304 IWL_DEBUG_MAC80211("enter\n");
3305
3306 if (priv->hw_params.sw_crypto) {
3307 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3308 return -EOPNOTSUPP;
3309 }
3310
3311 if (is_zero_ether_addr(addr))
3312 /* only support pairwise keys */
3313 return -EOPNOTSUPP;
3314
3315 sta_id = iwl_find_station(priv, addr);
3316 if (sta_id == IWL_INVALID_STATION) {
3317 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3318 print_mac(mac, addr));
3319 return -EINVAL;
3320
3321 }
3322
3323 mutex_lock(&priv->mutex);
3324 iwl_scan_cancel_timeout(priv, 100);
3325 mutex_unlock(&priv->mutex);
3326
3327 /* If we are getting WEP group key and we didn't receive any key mapping
3328 * so far, we are in legacy wep mode (group key only), otherwise we are
3329 * in 1X mode.
3330 * In legacy wep mode, we use another host command to the uCode */
3331 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3332 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3333 if (cmd == SET_KEY)
3334 is_default_wep_key = !priv->key_mapping_key;
3335 else
3336 is_default_wep_key =
3337 (key->hw_key_idx == HW_KEY_DEFAULT);
3338 }
3339
3340 switch (cmd) {
3341 case SET_KEY:
3342 if (is_default_wep_key)
3343 ret = iwl_set_default_wep_key(priv, key);
3344 else
3345 ret = iwl_set_dynamic_key(priv, key, sta_id);
3346
3347 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3348 break;
3349 case DISABLE_KEY:
3350 if (is_default_wep_key)
3351 ret = iwl_remove_default_wep_key(priv, key);
3352 else
3353 ret = iwl_remove_dynamic_key(priv, key, sta_id);
3354
3355 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3356 break;
3357 default:
3358 ret = -EINVAL;
3359 }
3360
3361 IWL_DEBUG_MAC80211("leave\n");
3362
3363 return ret;
3364 }
3365
3366 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3367 const struct ieee80211_tx_queue_params *params)
3368 {
3369 struct iwl_priv *priv = hw->priv;
3370 unsigned long flags;
3371 int q;
3372
3373 IWL_DEBUG_MAC80211("enter\n");
3374
3375 if (!iwl_is_ready_rf(priv)) {
3376 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3377 return -EIO;
3378 }
3379
3380 if (queue >= AC_NUM) {
3381 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3382 return 0;
3383 }
3384
3385 if (!priv->qos_data.qos_enable) {
3386 priv->qos_data.qos_active = 0;
3387 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3388 return 0;
3389 }
3390 q = AC_NUM - 1 - queue;
3391
3392 spin_lock_irqsave(&priv->lock, flags);
3393
3394 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3395 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3396 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3397 priv->qos_data.def_qos_parm.ac[q].edca_txop =
3398 cpu_to_le16((params->txop * 32));
3399
3400 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3401 priv->qos_data.qos_active = 1;
3402
3403 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3404 iwl_activate_qos(priv, 1);
3405 else if (priv->assoc_id && iwl_is_associated(priv))
3406 iwl_activate_qos(priv, 0);
3407
3408 spin_unlock_irqrestore(&priv->lock, flags);
3409
3410 IWL_DEBUG_MAC80211("leave\n");
3411 return 0;
3412 }
3413
3414 static int iwl4965_mac_ampdu_action(struct ieee80211_hw *hw,
3415 enum ieee80211_ampdu_mlme_action action,
3416 const u8 *addr, u16 tid, u16 *ssn)
3417 {
3418 struct iwl_priv *priv = hw->priv;
3419 DECLARE_MAC_BUF(mac);
3420
3421 IWL_DEBUG_HT("A-MPDU action on addr %s tid %d\n",
3422 print_mac(mac, addr), tid);
3423
3424 if (!(priv->cfg->sku & IWL_SKU_N))
3425 return -EACCES;
3426
3427 switch (action) {
3428 case IEEE80211_AMPDU_RX_START:
3429 IWL_DEBUG_HT("start Rx\n");
3430 return iwl_rx_agg_start(priv, addr, tid, *ssn);
3431 case IEEE80211_AMPDU_RX_STOP:
3432 IWL_DEBUG_HT("stop Rx\n");
3433 return iwl_rx_agg_stop(priv, addr, tid);
3434 case IEEE80211_AMPDU_TX_START:
3435 IWL_DEBUG_HT("start Tx\n");
3436 return iwl_tx_agg_start(priv, addr, tid, ssn);
3437 case IEEE80211_AMPDU_TX_STOP:
3438 IWL_DEBUG_HT("stop Tx\n");
3439 return iwl_tx_agg_stop(priv, addr, tid);
3440 default:
3441 IWL_DEBUG_HT("unknown\n");
3442 return -EINVAL;
3443 break;
3444 }
3445 return 0;
3446 }
3447 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
3448 struct ieee80211_tx_queue_stats *stats)
3449 {
3450 struct iwl_priv *priv = hw->priv;
3451 int i, avail;
3452 struct iwl_tx_queue *txq;
3453 struct iwl_queue *q;
3454 unsigned long flags;
3455
3456 IWL_DEBUG_MAC80211("enter\n");
3457
3458 if (!iwl_is_ready_rf(priv)) {
3459 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3460 return -EIO;
3461 }
3462
3463 spin_lock_irqsave(&priv->lock, flags);
3464
3465 for (i = 0; i < AC_NUM; i++) {
3466 txq = &priv->txq[i];
3467 q = &txq->q;
3468 avail = iwl_queue_space(q);
3469
3470 stats[i].len = q->n_window - avail;
3471 stats[i].limit = q->n_window - q->high_mark;
3472 stats[i].count = q->n_window;
3473
3474 }
3475 spin_unlock_irqrestore(&priv->lock, flags);
3476
3477 IWL_DEBUG_MAC80211("leave\n");
3478
3479 return 0;
3480 }
3481
3482 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
3483 struct ieee80211_low_level_stats *stats)
3484 {
3485 struct iwl_priv *priv = hw->priv;
3486
3487 priv = hw->priv;
3488 IWL_DEBUG_MAC80211("enter\n");
3489 IWL_DEBUG_MAC80211("leave\n");
3490
3491 return 0;
3492 }
3493
3494 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
3495 {
3496 struct iwl_priv *priv = hw->priv;
3497 unsigned long flags;
3498
3499 mutex_lock(&priv->mutex);
3500 IWL_DEBUG_MAC80211("enter\n");
3501
3502 spin_lock_irqsave(&priv->lock, flags);
3503 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3504 spin_unlock_irqrestore(&priv->lock, flags);
3505
3506 iwl_reset_qos(priv);
3507
3508 spin_lock_irqsave(&priv->lock, flags);
3509 priv->assoc_id = 0;
3510 priv->assoc_capability = 0;
3511 priv->assoc_station_added = 0;
3512
3513 /* new association get rid of ibss beacon skb */
3514 if (priv->ibss_beacon)
3515 dev_kfree_skb(priv->ibss_beacon);
3516
3517 priv->ibss_beacon = NULL;
3518
3519 priv->beacon_int = priv->hw->conf.beacon_int;
3520 priv->timestamp = 0;
3521 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
3522 priv->beacon_int = 0;
3523
3524 spin_unlock_irqrestore(&priv->lock, flags);
3525
3526 if (!iwl_is_ready_rf(priv)) {
3527 IWL_DEBUG_MAC80211("leave - not ready\n");
3528 mutex_unlock(&priv->mutex);
3529 return;
3530 }
3531
3532 /* we are restarting association process
3533 * clear RXON_FILTER_ASSOC_MSK bit
3534 */
3535 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3536 iwl_scan_cancel_timeout(priv, 100);
3537 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3538 iwl4965_commit_rxon(priv);
3539 }
3540
3541 iwl_power_update_mode(priv, 0);
3542
3543 /* Per mac80211.h: This is only used in IBSS mode... */
3544 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3545
3546 /* switch to CAM during association period.
3547 * the ucode will block any association/authentication
3548 * frome during assiciation period if it can not hear
3549 * the AP because of PM. the timer enable PM back is
3550 * association do not complete
3551 */
3552 if (priv->hw->conf.channel->flags & (IEEE80211_CHAN_PASSIVE_SCAN |
3553 IEEE80211_CHAN_RADAR))
3554 iwl_power_disable_management(priv, 3000);
3555
3556 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3557 mutex_unlock(&priv->mutex);
3558 return;
3559 }
3560
3561 iwl4965_set_rate(priv);
3562
3563 mutex_unlock(&priv->mutex);
3564
3565 IWL_DEBUG_MAC80211("leave\n");
3566 }
3567
3568 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3569 {
3570 struct iwl_priv *priv = hw->priv;
3571 unsigned long flags;
3572 __le64 timestamp;
3573
3574 mutex_lock(&priv->mutex);
3575 IWL_DEBUG_MAC80211("enter\n");
3576
3577 if (!iwl_is_ready_rf(priv)) {
3578 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3579 mutex_unlock(&priv->mutex);
3580 return -EIO;
3581 }
3582
3583 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3584 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3585 mutex_unlock(&priv->mutex);
3586 return -EIO;
3587 }
3588
3589 spin_lock_irqsave(&priv->lock, flags);
3590
3591 if (priv->ibss_beacon)
3592 dev_kfree_skb(priv->ibss_beacon);
3593
3594 priv->ibss_beacon = skb;
3595
3596 priv->assoc_id = 0;
3597 timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3598 priv->timestamp = le64_to_cpu(timestamp);
3599
3600 IWL_DEBUG_MAC80211("leave\n");
3601 spin_unlock_irqrestore(&priv->lock, flags);
3602
3603 iwl_reset_qos(priv);
3604
3605 iwl4965_post_associate(priv);
3606
3607 mutex_unlock(&priv->mutex);
3608
3609 return 0;
3610 }
3611
3612 /*****************************************************************************
3613 *
3614 * sysfs attributes
3615 *
3616 *****************************************************************************/
3617
3618 #ifdef CONFIG_IWLWIFI_DEBUG
3619
3620 /*
3621 * The following adds a new attribute to the sysfs representation
3622 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3623 * used for controlling the debug level.
3624 *
3625 * See the level definitions in iwl for details.
3626 */
3627
3628 static ssize_t show_debug_level(struct device *d,
3629 struct device_attribute *attr, char *buf)
3630 {
3631 struct iwl_priv *priv = d->driver_data;
3632
3633 return sprintf(buf, "0x%08X\n", priv->debug_level);
3634 }
3635 static ssize_t store_debug_level(struct device *d,
3636 struct device_attribute *attr,
3637 const char *buf, size_t count)
3638 {
3639 struct iwl_priv *priv = d->driver_data;
3640 unsigned long val;
3641 int ret;
3642
3643 ret = strict_strtoul(buf, 0, &val);
3644 if (ret)
3645 printk(KERN_INFO DRV_NAME
3646 ": %s is not in hex or decimal form.\n", buf);
3647 else
3648 priv->debug_level = val;
3649
3650 return strnlen(buf, count);
3651 }
3652
3653 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3654 show_debug_level, store_debug_level);
3655
3656
3657 #endif /* CONFIG_IWLWIFI_DEBUG */
3658
3659
3660 static ssize_t show_version(struct device *d,
3661 struct device_attribute *attr, char *buf)
3662 {
3663 struct iwl_priv *priv = d->driver_data;
3664 struct iwl_alive_resp *palive = &priv->card_alive;
3665 ssize_t pos = 0;
3666 u16 eeprom_ver;
3667
3668 if (palive->is_valid)
3669 pos += sprintf(buf + pos,
3670 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3671 "fw type: 0x%01X 0x%01X\n",
3672 palive->ucode_major, palive->ucode_minor,
3673 palive->sw_rev[0], palive->sw_rev[1],
3674 palive->ver_type, palive->ver_subtype);
3675 else
3676 pos += sprintf(buf + pos, "fw not loaded\n");
3677
3678 if (priv->eeprom) {
3679 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3680 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3681 eeprom_ver);
3682 } else {
3683 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3684 }
3685
3686 return pos;
3687 }
3688
3689 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3690
3691 static ssize_t show_temperature(struct device *d,
3692 struct device_attribute *attr, char *buf)
3693 {
3694 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3695
3696 if (!iwl_is_alive(priv))
3697 return -EAGAIN;
3698
3699 return sprintf(buf, "%d\n", priv->temperature);
3700 }
3701
3702 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3703
3704 static ssize_t show_tx_power(struct device *d,
3705 struct device_attribute *attr, char *buf)
3706 {
3707 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3708 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3709 }
3710
3711 static ssize_t store_tx_power(struct device *d,
3712 struct device_attribute *attr,
3713 const char *buf, size_t count)
3714 {
3715 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3716 unsigned long val;
3717 int ret;
3718
3719 ret = strict_strtoul(buf, 10, &val);
3720 if (ret)
3721 printk(KERN_INFO DRV_NAME
3722 ": %s is not in decimal form.\n", buf);
3723 else
3724 iwl_set_tx_power(priv, val, false);
3725
3726 return count;
3727 }
3728
3729 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3730
3731 static ssize_t show_flags(struct device *d,
3732 struct device_attribute *attr, char *buf)
3733 {
3734 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3735
3736 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3737 }
3738
3739 static ssize_t store_flags(struct device *d,
3740 struct device_attribute *attr,
3741 const char *buf, size_t count)
3742 {
3743 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3744 unsigned long val;
3745 u32 flags;
3746 int ret = strict_strtoul(buf, 0, &val);
3747 if (ret)
3748 return ret;
3749 flags = (u32)val;
3750
3751 mutex_lock(&priv->mutex);
3752 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3753 /* Cancel any currently running scans... */
3754 if (iwl_scan_cancel_timeout(priv, 100))
3755 IWL_WARNING("Could not cancel scan.\n");
3756 else {
3757 IWL_DEBUG_INFO("Commit rxon.flags = 0x%04X\n", flags);
3758 priv->staging_rxon.flags = cpu_to_le32(flags);
3759 iwl4965_commit_rxon(priv);
3760 }
3761 }
3762 mutex_unlock(&priv->mutex);
3763
3764 return count;
3765 }
3766
3767 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3768
3769 static ssize_t show_filter_flags(struct device *d,
3770 struct device_attribute *attr, char *buf)
3771 {
3772 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3773
3774 return sprintf(buf, "0x%04X\n",
3775 le32_to_cpu(priv->active_rxon.filter_flags));
3776 }
3777
3778 static ssize_t store_filter_flags(struct device *d,
3779 struct device_attribute *attr,
3780 const char *buf, size_t count)
3781 {
3782 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3783 unsigned long val;
3784 u32 filter_flags;
3785 int ret = strict_strtoul(buf, 0, &val);
3786 if (ret)
3787 return ret;
3788 filter_flags = (u32)val;
3789
3790 mutex_lock(&priv->mutex);
3791 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3792 /* Cancel any currently running scans... */
3793 if (iwl_scan_cancel_timeout(priv, 100))
3794 IWL_WARNING("Could not cancel scan.\n");
3795 else {
3796 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3797 "0x%04X\n", filter_flags);
3798 priv->staging_rxon.filter_flags =
3799 cpu_to_le32(filter_flags);
3800 iwl4965_commit_rxon(priv);
3801 }
3802 }
3803 mutex_unlock(&priv->mutex);
3804
3805 return count;
3806 }
3807
3808 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3809 store_filter_flags);
3810
3811 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
3812
3813 static ssize_t show_measurement(struct device *d,
3814 struct device_attribute *attr, char *buf)
3815 {
3816 struct iwl_priv *priv = dev_get_drvdata(d);
3817 struct iwl4965_spectrum_notification measure_report;
3818 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3819 u8 *data = (u8 *)&measure_report;
3820 unsigned long flags;
3821
3822 spin_lock_irqsave(&priv->lock, flags);
3823 if (!(priv->measurement_status & MEASUREMENT_READY)) {
3824 spin_unlock_irqrestore(&priv->lock, flags);
3825 return 0;
3826 }
3827 memcpy(&measure_report, &priv->measure_report, size);
3828 priv->measurement_status = 0;
3829 spin_unlock_irqrestore(&priv->lock, flags);
3830
3831 while (size && (PAGE_SIZE - len)) {
3832 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3833 PAGE_SIZE - len, 1);
3834 len = strlen(buf);
3835 if (PAGE_SIZE - len)
3836 buf[len++] = '\n';
3837
3838 ofs += 16;
3839 size -= min(size, 16U);
3840 }
3841
3842 return len;
3843 }
3844
3845 static ssize_t store_measurement(struct device *d,
3846 struct device_attribute *attr,
3847 const char *buf, size_t count)
3848 {
3849 struct iwl_priv *priv = dev_get_drvdata(d);
3850 struct ieee80211_measurement_params params = {
3851 .channel = le16_to_cpu(priv->active_rxon.channel),
3852 .start_time = cpu_to_le64(priv->last_tsf),
3853 .duration = cpu_to_le16(1),
3854 };
3855 u8 type = IWL_MEASURE_BASIC;
3856 u8 buffer[32];
3857 u8 channel;
3858
3859 if (count) {
3860 char *p = buffer;
3861 strncpy(buffer, buf, min(sizeof(buffer), count));
3862 channel = simple_strtoul(p, NULL, 0);
3863 if (channel)
3864 params.channel = channel;
3865
3866 p = buffer;
3867 while (*p && *p != ' ')
3868 p++;
3869 if (*p)
3870 type = simple_strtoul(p + 1, NULL, 0);
3871 }
3872
3873 IWL_DEBUG_INFO("Invoking measurement of type %d on "
3874 "channel %d (for '%s')\n", type, params.channel, buf);
3875 iwl4965_get_measurement(priv, &params, type);
3876
3877 return count;
3878 }
3879
3880 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3881 show_measurement, store_measurement);
3882 #endif /* CONFIG_IWLAGN_SPECTRUM_MEASUREMENT */
3883
3884 static ssize_t store_retry_rate(struct device *d,
3885 struct device_attribute *attr,
3886 const char *buf, size_t count)
3887 {
3888 struct iwl_priv *priv = dev_get_drvdata(d);
3889 long val;
3890 int ret = strict_strtol(buf, 10, &val);
3891 if (!ret)
3892 return ret;
3893
3894 priv->retry_rate = (val > 0) ? val : 1;
3895
3896 return count;
3897 }
3898
3899 static ssize_t show_retry_rate(struct device *d,
3900 struct device_attribute *attr, char *buf)
3901 {
3902 struct iwl_priv *priv = dev_get_drvdata(d);
3903 return sprintf(buf, "%d", priv->retry_rate);
3904 }
3905
3906 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3907 store_retry_rate);
3908
3909 static ssize_t store_power_level(struct device *d,
3910 struct device_attribute *attr,
3911 const char *buf, size_t count)
3912 {
3913 struct iwl_priv *priv = dev_get_drvdata(d);
3914 int ret;
3915 unsigned long mode;
3916
3917
3918 mutex_lock(&priv->mutex);
3919
3920 if (!iwl_is_ready(priv)) {
3921 ret = -EAGAIN;
3922 goto out;
3923 }
3924
3925 ret = strict_strtoul(buf, 10, &mode);
3926 if (ret)
3927 goto out;
3928
3929 ret = iwl_power_set_user_mode(priv, mode);
3930 if (ret) {
3931 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3932 goto out;
3933 }
3934 ret = count;
3935
3936 out:
3937 mutex_unlock(&priv->mutex);
3938 return ret;
3939 }
3940
3941 static ssize_t show_power_level(struct device *d,
3942 struct device_attribute *attr, char *buf)
3943 {
3944 struct iwl_priv *priv = dev_get_drvdata(d);
3945 int mode = priv->power_data.user_power_setting;
3946 int system = priv->power_data.system_power_setting;
3947 int level = priv->power_data.power_mode;
3948 char *p = buf;
3949
3950 switch (system) {
3951 case IWL_POWER_SYS_AUTO:
3952 p += sprintf(p, "SYSTEM:auto");
3953 break;
3954 case IWL_POWER_SYS_AC:
3955 p += sprintf(p, "SYSTEM:ac");
3956 break;
3957 case IWL_POWER_SYS_BATTERY:
3958 p += sprintf(p, "SYSTEM:battery");
3959 break;
3960 }
3961
3962 p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO)?"fixed":"auto");
3963 p += sprintf(p, "\tINDEX:%d", level);
3964 p += sprintf(p, "\n");
3965 return p - buf + 1;
3966 }
3967
3968 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3969 store_power_level);
3970
3971 static ssize_t show_channels(struct device *d,
3972 struct device_attribute *attr, char *buf)
3973 {
3974
3975 struct iwl_priv *priv = dev_get_drvdata(d);
3976 struct ieee80211_channel *channels = NULL;
3977 const struct ieee80211_supported_band *supp_band = NULL;
3978 int len = 0, i;
3979 int count = 0;
3980
3981 if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3982 return -EAGAIN;
3983
3984 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3985 channels = supp_band->channels;
3986 count = supp_band->n_channels;
3987
3988 len += sprintf(&buf[len],
3989 "Displaying %d channels in 2.4GHz band "
3990 "(802.11bg):\n", count);
3991
3992 for (i = 0; i < count; i++)
3993 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3994 ieee80211_frequency_to_channel(
3995 channels[i].center_freq),
3996 channels[i].max_power,
3997 channels[i].flags & IEEE80211_CHAN_RADAR ?
3998 " (IEEE 802.11h required)" : "",
3999 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
4000 || (channels[i].flags &
4001 IEEE80211_CHAN_RADAR)) ? "" :
4002 ", IBSS",
4003 channels[i].flags &
4004 IEEE80211_CHAN_PASSIVE_SCAN ?
4005 "passive only" : "active/passive");
4006
4007 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
4008 channels = supp_band->channels;
4009 count = supp_band->n_channels;
4010
4011 len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
4012 "(802.11a):\n", count);
4013
4014 for (i = 0; i < count; i++)
4015 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
4016 ieee80211_frequency_to_channel(
4017 channels[i].center_freq),
4018 channels[i].max_power,
4019 channels[i].flags & IEEE80211_CHAN_RADAR ?
4020 " (IEEE 802.11h required)" : "",
4021 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
4022 || (channels[i].flags &
4023 IEEE80211_CHAN_RADAR)) ? "" :
4024 ", IBSS",
4025 channels[i].flags &
4026 IEEE80211_CHAN_PASSIVE_SCAN ?
4027 "passive only" : "active/passive");
4028
4029 return len;
4030 }
4031
4032 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
4033
4034 static ssize_t show_statistics(struct device *d,
4035 struct device_attribute *attr, char *buf)
4036 {
4037 struct iwl_priv *priv = dev_get_drvdata(d);
4038 u32 size = sizeof(struct iwl_notif_statistics);
4039 u32 len = 0, ofs = 0;
4040 u8 *data = (u8 *)&priv->statistics;
4041 int rc = 0;
4042
4043 if (!iwl_is_alive(priv))
4044 return -EAGAIN;
4045
4046 mutex_lock(&priv->mutex);
4047 rc = iwl_send_statistics_request(priv, 0);
4048 mutex_unlock(&priv->mutex);
4049
4050 if (rc) {
4051 len = sprintf(buf,
4052 "Error sending statistics request: 0x%08X\n", rc);
4053 return len;
4054 }
4055
4056 while (size && (PAGE_SIZE - len)) {
4057 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4058 PAGE_SIZE - len, 1);
4059 len = strlen(buf);
4060 if (PAGE_SIZE - len)
4061 buf[len++] = '\n';
4062
4063 ofs += 16;
4064 size -= min(size, 16U);
4065 }
4066
4067 return len;
4068 }
4069
4070 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
4071
4072 static ssize_t show_status(struct device *d,
4073 struct device_attribute *attr, char *buf)
4074 {
4075 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4076 if (!iwl_is_alive(priv))
4077 return -EAGAIN;
4078 return sprintf(buf, "0x%08x\n", (int)priv->status);
4079 }
4080
4081 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
4082
4083 /*****************************************************************************
4084 *
4085 * driver setup and teardown
4086 *
4087 *****************************************************************************/
4088
4089 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4090 {
4091 priv->workqueue = create_workqueue(DRV_NAME);
4092
4093 init_waitqueue_head(&priv->wait_command_queue);
4094
4095 INIT_WORK(&priv->up, iwl4965_bg_up);
4096 INIT_WORK(&priv->restart, iwl4965_bg_restart);
4097 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
4098 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
4099 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4100 INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
4101 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4102 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4103 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4104
4105 /* FIXME : remove when resolved PENDING */
4106 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
4107 iwl_setup_scan_deferred_work(priv);
4108 iwl_setup_power_deferred_work(priv);
4109
4110 if (priv->cfg->ops->lib->setup_deferred_work)
4111 priv->cfg->ops->lib->setup_deferred_work(priv);
4112
4113 init_timer(&priv->statistics_periodic);
4114 priv->statistics_periodic.data = (unsigned long)priv;
4115 priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
4116
4117 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4118 iwl4965_irq_tasklet, (unsigned long)priv);
4119 }
4120
4121 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4122 {
4123 if (priv->cfg->ops->lib->cancel_deferred_work)
4124 priv->cfg->ops->lib->cancel_deferred_work(priv);
4125
4126 cancel_delayed_work_sync(&priv->init_alive_start);
4127 cancel_delayed_work(&priv->scan_check);
4128 cancel_delayed_work_sync(&priv->set_power_save);
4129 cancel_delayed_work(&priv->alive_start);
4130 cancel_work_sync(&priv->beacon_update);
4131 del_timer_sync(&priv->statistics_periodic);
4132 }
4133
4134 static struct attribute *iwl4965_sysfs_entries[] = {
4135 &dev_attr_channels.attr,
4136 &dev_attr_flags.attr,
4137 &dev_attr_filter_flags.attr,
4138 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
4139 &dev_attr_measurement.attr,
4140 #endif
4141 &dev_attr_power_level.attr,
4142 &dev_attr_retry_rate.attr,
4143 &dev_attr_statistics.attr,
4144 &dev_attr_status.attr,
4145 &dev_attr_temperature.attr,
4146 &dev_attr_tx_power.attr,
4147 #ifdef CONFIG_IWLWIFI_DEBUG
4148 &dev_attr_debug_level.attr,
4149 #endif
4150 &dev_attr_version.attr,
4151
4152 NULL
4153 };
4154
4155 static struct attribute_group iwl4965_attribute_group = {
4156 .name = NULL, /* put in device directory */
4157 .attrs = iwl4965_sysfs_entries,
4158 };
4159
4160 static struct ieee80211_ops iwl4965_hw_ops = {
4161 .tx = iwl4965_mac_tx,
4162 .start = iwl4965_mac_start,
4163 .stop = iwl4965_mac_stop,
4164 .add_interface = iwl4965_mac_add_interface,
4165 .remove_interface = iwl4965_mac_remove_interface,
4166 .config = iwl4965_mac_config,
4167 .config_interface = iwl4965_mac_config_interface,
4168 .configure_filter = iwl4965_configure_filter,
4169 .set_key = iwl4965_mac_set_key,
4170 .update_tkip_key = iwl4965_mac_update_tkip_key,
4171 .get_stats = iwl4965_mac_get_stats,
4172 .get_tx_stats = iwl4965_mac_get_tx_stats,
4173 .conf_tx = iwl4965_mac_conf_tx,
4174 .reset_tsf = iwl4965_mac_reset_tsf,
4175 .bss_info_changed = iwl4965_bss_info_changed,
4176 .ampdu_action = iwl4965_mac_ampdu_action,
4177 .hw_scan = iwl_mac_hw_scan
4178 };
4179
4180 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4181 {
4182 int err = 0;
4183 struct iwl_priv *priv;
4184 struct ieee80211_hw *hw;
4185 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4186 unsigned long flags;
4187 DECLARE_MAC_BUF(mac);
4188
4189 /************************
4190 * 1. Allocating HW data
4191 ************************/
4192
4193 /* Disabling hardware scan means that mac80211 will perform scans
4194 * "the hard way", rather than using device's scan. */
4195 if (cfg->mod_params->disable_hw_scan) {
4196 if (cfg->mod_params->debug & IWL_DL_INFO)
4197 dev_printk(KERN_DEBUG, &(pdev->dev),
4198 "Disabling hw_scan\n");
4199 iwl4965_hw_ops.hw_scan = NULL;
4200 }
4201
4202 hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
4203 if (!hw) {
4204 err = -ENOMEM;
4205 goto out;
4206 }
4207 priv = hw->priv;
4208 /* At this point both hw and priv are allocated. */
4209
4210 SET_IEEE80211_DEV(hw, &pdev->dev);
4211
4212 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
4213 priv->cfg = cfg;
4214 priv->pci_dev = pdev;
4215
4216 #ifdef CONFIG_IWLWIFI_DEBUG
4217 priv->debug_level = priv->cfg->mod_params->debug;
4218 atomic_set(&priv->restrict_refcnt, 0);
4219 #endif
4220
4221 /**************************
4222 * 2. Initializing PCI bus
4223 **************************/
4224 if (pci_enable_device(pdev)) {
4225 err = -ENODEV;
4226 goto out_ieee80211_free_hw;
4227 }
4228
4229 pci_set_master(pdev);
4230
4231 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
4232 if (!err)
4233 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
4234 if (err) {
4235 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4236 if (!err)
4237 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
4238 /* both attempts failed: */
4239 if (err) {
4240 printk(KERN_WARNING "%s: No suitable DMA available.\n",
4241 DRV_NAME);
4242 goto out_pci_disable_device;
4243 }
4244 }
4245
4246 err = pci_request_regions(pdev, DRV_NAME);
4247 if (err)
4248 goto out_pci_disable_device;
4249
4250 pci_set_drvdata(pdev, priv);
4251
4252
4253 /***********************
4254 * 3. Read REV register
4255 ***********************/
4256 priv->hw_base = pci_iomap(pdev, 0, 0);
4257 if (!priv->hw_base) {
4258 err = -ENODEV;
4259 goto out_pci_release_regions;
4260 }
4261
4262 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
4263 (unsigned long long) pci_resource_len(pdev, 0));
4264 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
4265
4266 iwl_hw_detect(priv);
4267 printk(KERN_INFO DRV_NAME
4268 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
4269 priv->cfg->name, priv->hw_rev);
4270
4271 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4272 * PCI Tx retries from interfering with C3 CPU state */
4273 pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
4274
4275 /* amp init */
4276 err = priv->cfg->ops->lib->apm_ops.init(priv);
4277 if (err < 0) {
4278 IWL_DEBUG_INFO("Failed to init APMG\n");
4279 goto out_iounmap;
4280 }
4281 /*****************
4282 * 4. Read EEPROM
4283 *****************/
4284 /* Read the EEPROM */
4285 err = iwl_eeprom_init(priv);
4286 if (err) {
4287 IWL_ERROR("Unable to init EEPROM\n");
4288 goto out_iounmap;
4289 }
4290 err = iwl_eeprom_check_version(priv);
4291 if (err)
4292 goto out_iounmap;
4293
4294 /* extract MAC Address */
4295 iwl_eeprom_get_mac(priv, priv->mac_addr);
4296 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
4297 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4298
4299 /************************
4300 * 5. Setup HW constants
4301 ************************/
4302 if (iwl_set_hw_params(priv)) {
4303 IWL_ERROR("failed to set hw parameters\n");
4304 goto out_free_eeprom;
4305 }
4306
4307 /*******************
4308 * 6. Setup priv
4309 *******************/
4310
4311 err = iwl_init_drv(priv);
4312 if (err)
4313 goto out_free_eeprom;
4314 /* At this point both hw and priv are initialized. */
4315
4316 /**********************************
4317 * 7. Initialize module parameters
4318 **********************************/
4319
4320 /* Disable radio (SW RF KILL) via parameter when loading driver */
4321 if (priv->cfg->mod_params->disable) {
4322 set_bit(STATUS_RF_KILL_SW, &priv->status);
4323 IWL_DEBUG_INFO("Radio disabled.\n");
4324 }
4325
4326 /********************
4327 * 8. Setup services
4328 ********************/
4329 spin_lock_irqsave(&priv->lock, flags);
4330 iwl4965_disable_interrupts(priv);
4331 spin_unlock_irqrestore(&priv->lock, flags);
4332
4333 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4334 if (err) {
4335 IWL_ERROR("failed to create sysfs device attributes\n");
4336 goto out_uninit_drv;
4337 }
4338
4339
4340 iwl_setup_deferred_work(priv);
4341 iwl_setup_rx_handlers(priv);
4342
4343 /********************
4344 * 9. Conclude
4345 ********************/
4346 pci_save_state(pdev);
4347 pci_disable_device(pdev);
4348
4349 /**********************************
4350 * 10. Setup and register mac80211
4351 **********************************/
4352
4353 err = iwl_setup_mac(priv);
4354 if (err)
4355 goto out_remove_sysfs;
4356
4357 err = iwl_dbgfs_register(priv, DRV_NAME);
4358 if (err)
4359 IWL_ERROR("failed to create debugfs files\n");
4360
4361 err = iwl_rfkill_init(priv);
4362 if (err)
4363 IWL_ERROR("Unable to initialize RFKILL system. "
4364 "Ignoring error: %d\n", err);
4365 iwl_power_initialize(priv);
4366 return 0;
4367
4368 out_remove_sysfs:
4369 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4370 out_uninit_drv:
4371 iwl_uninit_drv(priv);
4372 out_free_eeprom:
4373 iwl_eeprom_free(priv);
4374 out_iounmap:
4375 pci_iounmap(pdev, priv->hw_base);
4376 out_pci_release_regions:
4377 pci_release_regions(pdev);
4378 pci_set_drvdata(pdev, NULL);
4379 out_pci_disable_device:
4380 pci_disable_device(pdev);
4381 out_ieee80211_free_hw:
4382 ieee80211_free_hw(priv->hw);
4383 out:
4384 return err;
4385 }
4386
4387 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
4388 {
4389 struct iwl_priv *priv = pci_get_drvdata(pdev);
4390 unsigned long flags;
4391
4392 if (!priv)
4393 return;
4394
4395 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4396
4397 iwl_dbgfs_unregister(priv);
4398 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4399
4400 /* ieee80211_unregister_hw call wil cause iwl4965_mac_stop to
4401 * to be called and iwl4965_down since we are removing the device
4402 * we need to set STATUS_EXIT_PENDING bit.
4403 */
4404 set_bit(STATUS_EXIT_PENDING, &priv->status);
4405 if (priv->mac80211_registered) {
4406 ieee80211_unregister_hw(priv->hw);
4407 priv->mac80211_registered = 0;
4408 } else {
4409 iwl4965_down(priv);
4410 }
4411
4412 /* make sure we flush any pending irq or
4413 * tasklet for the driver
4414 */
4415 spin_lock_irqsave(&priv->lock, flags);
4416 iwl4965_disable_interrupts(priv);
4417 spin_unlock_irqrestore(&priv->lock, flags);
4418
4419 iwl_synchronize_irq(priv);
4420
4421 iwl_rfkill_unregister(priv);
4422 iwl4965_dealloc_ucode_pci(priv);
4423
4424 if (priv->rxq.bd)
4425 iwl_rx_queue_free(priv, &priv->rxq);
4426 iwl_hw_txq_ctx_free(priv);
4427
4428 iwl_clear_stations_table(priv);
4429 iwl_eeprom_free(priv);
4430
4431
4432 /*netif_stop_queue(dev); */
4433 flush_workqueue(priv->workqueue);
4434
4435 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
4436 * priv->workqueue... so we can't take down the workqueue
4437 * until now... */
4438 destroy_workqueue(priv->workqueue);
4439 priv->workqueue = NULL;
4440
4441 pci_iounmap(pdev, priv->hw_base);
4442 pci_release_regions(pdev);
4443 pci_disable_device(pdev);
4444 pci_set_drvdata(pdev, NULL);
4445
4446 iwl_uninit_drv(priv);
4447
4448 if (priv->ibss_beacon)
4449 dev_kfree_skb(priv->ibss_beacon);
4450
4451 ieee80211_free_hw(priv->hw);
4452 }
4453
4454 #ifdef CONFIG_PM
4455
4456 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4457 {
4458 struct iwl_priv *priv = pci_get_drvdata(pdev);
4459
4460 if (priv->is_open) {
4461 set_bit(STATUS_IN_SUSPEND, &priv->status);
4462 iwl4965_mac_stop(priv->hw);
4463 priv->is_open = 1;
4464 }
4465
4466 pci_set_power_state(pdev, PCI_D3hot);
4467
4468 return 0;
4469 }
4470
4471 static int iwl4965_pci_resume(struct pci_dev *pdev)
4472 {
4473 struct iwl_priv *priv = pci_get_drvdata(pdev);
4474
4475 pci_set_power_state(pdev, PCI_D0);
4476
4477 if (priv->is_open)
4478 iwl4965_mac_start(priv->hw);
4479
4480 clear_bit(STATUS_IN_SUSPEND, &priv->status);
4481 return 0;
4482 }
4483
4484 #endif /* CONFIG_PM */
4485
4486 /*****************************************************************************
4487 *
4488 * driver and module entry point
4489 *
4490 *****************************************************************************/
4491
4492 /* Hardware specific file defines the PCI IDs table for that hardware module */
4493 static struct pci_device_id iwl_hw_card_ids[] = {
4494 #ifdef CONFIG_IWL4965
4495 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4496 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4497 #endif /* CONFIG_IWL4965 */
4498 #ifdef CONFIG_IWL5000
4499 {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
4500 {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
4501 {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
4502 {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
4503 {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
4504 {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
4505 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4506 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4507 {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
4508 {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
4509 {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
4510 #endif /* CONFIG_IWL5000 */
4511 {0}
4512 };
4513 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4514
4515 static struct pci_driver iwl_driver = {
4516 .name = DRV_NAME,
4517 .id_table = iwl_hw_card_ids,
4518 .probe = iwl4965_pci_probe,
4519 .remove = __devexit_p(iwl4965_pci_remove),
4520 #ifdef CONFIG_PM
4521 .suspend = iwl4965_pci_suspend,
4522 .resume = iwl4965_pci_resume,
4523 #endif
4524 };
4525
4526 static int __init iwl4965_init(void)
4527 {
4528
4529 int ret;
4530 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4531 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4532
4533 ret = iwlagn_rate_control_register();
4534 if (ret) {
4535 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4536 return ret;
4537 }
4538
4539 ret = pci_register_driver(&iwl_driver);
4540 if (ret) {
4541 IWL_ERROR("Unable to initialize PCI module\n");
4542 goto error_register;
4543 }
4544
4545 return ret;
4546
4547 error_register:
4548 iwlagn_rate_control_unregister();
4549 return ret;
4550 }
4551
4552 static void __exit iwl4965_exit(void)
4553 {
4554 pci_unregister_driver(&iwl_driver);
4555 iwlagn_rate_control_unregister();
4556 }
4557
4558 module_exit(iwl4965_exit);
4559 module_init(iwl4965_init);
Linux kernel - Deliverables
This page took 0.121211 seconds and 6 git commands to generate.