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iwlwifi: rename 4965 to AGN
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / wireless / iwlwifi / iwl-agn.c
blob6503b3ac8d666b0115a84a770aea683fcba9b1c9
1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
4 *
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
20 *
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
23 *
24 * Contact Information:
25 * James P. Ketrenos <ipw2100-admin@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
29
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/version.h>
33 #include <linux/init.h>
34 #include <linux/pci.h>
35 #include <linux/dma-mapping.h>
36 #include <linux/delay.h>
37 #include <linux/skbuff.h>
38 #include <linux/netdevice.h>
39 #include <linux/wireless.h>
40 #include <linux/firmware.h>
41 #include <linux/etherdevice.h>
42 #include <linux/if_arp.h>
43
44 #include <net/mac80211.h>
45
46 #include <asm/div64.h>
47
48 #include "iwl-eeprom.h"
49 #include "iwl-dev.h"
50 #include "iwl-core.h"
51 #include "iwl-io.h"
52 #include "iwl-helpers.h"
53 #include "iwl-sta.h"
54 #include "iwl-calib.h"
55
56
57 /******************************************************************************
58 *
59 * module boiler plate
60 *
61 ******************************************************************************/
62
63 /*
64 * module name, copyright, version, etc.
65 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
66 */
67
68 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
69
70 #ifdef CONFIG_IWLWIFI_DEBUG
71 #define VD "d"
72 #else
73 #define VD
74 #endif
75
76 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
77 #define VS "s"
78 #else
79 #define VS
80 #endif
81
82 #define DRV_VERSION IWLWIFI_VERSION VD VS
83
84
85 MODULE_DESCRIPTION(DRV_DESCRIPTION);
86 MODULE_VERSION(DRV_VERSION);
87 MODULE_AUTHOR(DRV_COPYRIGHT);
88 MODULE_LICENSE("GPL");
89 MODULE_ALIAS("iwl4965");
90
91 /*************** STATION TABLE MANAGEMENT ****
92 * mac80211 should be examined to determine if sta_info is duplicating
93 * the functionality provided here
94 */
95
96 /**************************************************************/
97
98
99
100 static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
101 {
102 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
103
104 if (hw_decrypt)
105 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
106 else
107 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
108
109 }
110
111 /**
112 * iwl4965_check_rxon_cmd - validate RXON structure is valid
113 *
114 * NOTE: This is really only useful during development and can eventually
115 * be #ifdef'd out once the driver is stable and folks aren't actively
116 * making changes
117 */
118 static int iwl4965_check_rxon_cmd(struct iwl_rxon_cmd *rxon)
119 {
120 int error = 0;
121 int counter = 1;
122
123 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
124 error |= le32_to_cpu(rxon->flags &
125 (RXON_FLG_TGJ_NARROW_BAND_MSK |
126 RXON_FLG_RADAR_DETECT_MSK));
127 if (error)
128 IWL_WARNING("check 24G fields %d | %d\n",
129 counter++, error);
130 } else {
131 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
132 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
133 if (error)
134 IWL_WARNING("check 52 fields %d | %d\n",
135 counter++, error);
136 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
137 if (error)
138 IWL_WARNING("check 52 CCK %d | %d\n",
139 counter++, error);
140 }
141 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
142 if (error)
143 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
144
145 /* make sure basic rates 6Mbps and 1Mbps are supported */
146 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
147 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
148 if (error)
149 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
150
151 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
152 if (error)
153 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
154
155 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
156 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
157 if (error)
158 IWL_WARNING("check CCK and short slot %d | %d\n",
159 counter++, error);
160
161 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
162 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
163 if (error)
164 IWL_WARNING("check CCK & auto detect %d | %d\n",
165 counter++, error);
166
167 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
168 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
169 if (error)
170 IWL_WARNING("check TGG and auto detect %d | %d\n",
171 counter++, error);
172
173 if (error)
174 IWL_WARNING("Tuning to channel %d\n",
175 le16_to_cpu(rxon->channel));
176
177 if (error) {
178 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
179 return -1;
180 }
181 return 0;
182 }
183
184 /**
185 * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
186 * @priv: staging_rxon is compared to active_rxon
187 *
188 * If the RXON structure is changing enough to require a new tune,
189 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
190 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
191 */
192 static int iwl4965_full_rxon_required(struct iwl_priv *priv)
193 {
194
195 /* These items are only settable from the full RXON command */
196 if (!(iwl_is_associated(priv)) ||
197 compare_ether_addr(priv->staging_rxon.bssid_addr,
198 priv->active_rxon.bssid_addr) ||
199 compare_ether_addr(priv->staging_rxon.node_addr,
200 priv->active_rxon.node_addr) ||
201 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
202 priv->active_rxon.wlap_bssid_addr) ||
203 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
204 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
205 (priv->staging_rxon.air_propagation !=
206 priv->active_rxon.air_propagation) ||
207 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
208 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
209 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
210 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
211 (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
212 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
213 return 1;
214
215 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
216 * be updated with the RXON_ASSOC command -- however only some
217 * flag transitions are allowed using RXON_ASSOC */
218
219 /* Check if we are not switching bands */
220 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
221 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
222 return 1;
223
224 /* Check if we are switching association toggle */
225 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
226 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
227 return 1;
228
229 return 0;
230 }
231
232 /**
233 * iwl4965_commit_rxon - commit staging_rxon to hardware
234 *
235 * The RXON command in staging_rxon is committed to the hardware and
236 * the active_rxon structure is updated with the new data. This
237 * function correctly transitions out of the RXON_ASSOC_MSK state if
238 * a HW tune is required based on the RXON structure changes.
239 */
240 static int iwl4965_commit_rxon(struct iwl_priv *priv)
241 {
242 /* cast away the const for active_rxon in this function */
243 struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
244 DECLARE_MAC_BUF(mac);
245 int ret;
246 bool new_assoc =
247 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
248
249 if (!iwl_is_alive(priv))
250 return -EBUSY;
251
252 /* always get timestamp with Rx frame */
253 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
254 /* allow CTS-to-self if possible. this is relevant only for
255 * 5000, but will not damage 4965 */
256 priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
257
258 ret = iwl4965_check_rxon_cmd(&priv->staging_rxon);
259 if (ret) {
260 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
261 return -EINVAL;
262 }
263
264 /* If we don't need to send a full RXON, we can use
265 * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
266 * and other flags for the current radio configuration. */
267 if (!iwl4965_full_rxon_required(priv)) {
268 ret = iwl_send_rxon_assoc(priv);
269 if (ret) {
270 IWL_ERROR("Error setting RXON_ASSOC (%d)\n", ret);
271 return ret;
272 }
273
274 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
275 return 0;
276 }
277
278 /* station table will be cleared */
279 priv->assoc_station_added = 0;
280
281 /* If we are currently associated and the new config requires
282 * an RXON_ASSOC and the new config wants the associated mask enabled,
283 * we must clear the associated from the active configuration
284 * before we apply the new config */
285 if (iwl_is_associated(priv) && new_assoc) {
286 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
287 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
288
289 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
290 sizeof(struct iwl_rxon_cmd),
291 &priv->active_rxon);
292
293 /* If the mask clearing failed then we set
294 * active_rxon back to what it was previously */
295 if (ret) {
296 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
297 IWL_ERROR("Error clearing ASSOC_MSK (%d)\n", ret);
298 return ret;
299 }
300 }
301
302 IWL_DEBUG_INFO("Sending RXON\n"
303 "* with%s RXON_FILTER_ASSOC_MSK\n"
304 "* channel = %d\n"
305 "* bssid = %s\n",
306 (new_assoc ? "" : "out"),
307 le16_to_cpu(priv->staging_rxon.channel),
308 print_mac(mac, priv->staging_rxon.bssid_addr));
309
310 iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
311
312 /* Apply the new configuration
313 * RXON unassoc clears the station table in uCode, send it before
314 * we add the bcast station. If assoc bit is set, we will send RXON
315 * after having added the bcast and bssid station.
316 */
317 if (!new_assoc) {
318 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
319 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
320 if (ret) {
321 IWL_ERROR("Error setting new RXON (%d)\n", ret);
322 return ret;
323 }
324 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
325 }
326
327 iwl_clear_stations_table(priv);
328
329 if (!priv->error_recovering)
330 priv->start_calib = 0;
331
332 /* Add the broadcast address so we can send broadcast frames */
333 if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
334 IWL_INVALID_STATION) {
335 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
336 return -EIO;
337 }
338
339 /* If we have set the ASSOC_MSK and we are in BSS mode then
340 * add the IWL_AP_ID to the station rate table */
341 if (new_assoc) {
342 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
343 ret = iwl_rxon_add_station(priv,
344 priv->active_rxon.bssid_addr, 1);
345 if (ret == IWL_INVALID_STATION) {
346 IWL_ERROR("Error adding AP address for TX.\n");
347 return -EIO;
348 }
349 priv->assoc_station_added = 1;
350 if (priv->default_wep_key &&
351 iwl_send_static_wepkey_cmd(priv, 0))
352 IWL_ERROR("Could not send WEP static key.\n");
353 }
354
355 /* Apply the new configuration
356 * RXON assoc doesn't clear the station table in uCode,
357 */
358 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
359 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
360 if (ret) {
361 IWL_ERROR("Error setting new RXON (%d)\n", ret);
362 return ret;
363 }
364 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
365 }
366
367 iwl_init_sensitivity(priv);
368
369 /* If we issue a new RXON command which required a tune then we must
370 * send a new TXPOWER command or we won't be able to Tx any frames */
371 ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
372 if (ret) {
373 IWL_ERROR("Error sending TX power (%d)\n", ret);
374 return ret;
375 }
376
377 return 0;
378 }
379
380 void iwl4965_update_chain_flags(struct iwl_priv *priv)
381 {
382
383 iwl_set_rxon_chain(priv);
384 iwl4965_commit_rxon(priv);
385 }
386
387 static int iwl4965_send_bt_config(struct iwl_priv *priv)
388 {
389 struct iwl4965_bt_cmd bt_cmd = {
390 .flags = 3,
391 .lead_time = 0xAA,
392 .max_kill = 1,
393 .kill_ack_mask = 0,
394 .kill_cts_mask = 0,
395 };
396
397 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
398 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
399 }
400
401 static void iwl_clear_free_frames(struct iwl_priv *priv)
402 {
403 struct list_head *element;
404
405 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
406 priv->frames_count);
407
408 while (!list_empty(&priv->free_frames)) {
409 element = priv->free_frames.next;
410 list_del(element);
411 kfree(list_entry(element, struct iwl_frame, list));
412 priv->frames_count--;
413 }
414
415 if (priv->frames_count) {
416 IWL_WARNING("%d frames still in use. Did we lose one?\n",
417 priv->frames_count);
418 priv->frames_count = 0;
419 }
420 }
421
422 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
423 {
424 struct iwl_frame *frame;
425 struct list_head *element;
426 if (list_empty(&priv->free_frames)) {
427 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
428 if (!frame) {
429 IWL_ERROR("Could not allocate frame!\n");
430 return NULL;
431 }
432
433 priv->frames_count++;
434 return frame;
435 }
436
437 element = priv->free_frames.next;
438 list_del(element);
439 return list_entry(element, struct iwl_frame, list);
440 }
441
442 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
443 {
444 memset(frame, 0, sizeof(*frame));
445 list_add(&frame->list, &priv->free_frames);
446 }
447
448 static unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
449 struct ieee80211_hdr *hdr,
450 const u8 *dest, int left)
451 {
452 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
453 ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
454 (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
455 return 0;
456
457 if (priv->ibss_beacon->len > left)
458 return 0;
459
460 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
461
462 return priv->ibss_beacon->len;
463 }
464
465 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
466 {
467 int i;
468 int rate_mask;
469
470 /* Set rate mask*/
471 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
472 rate_mask = priv->active_rate_basic & 0xF;
473 else
474 rate_mask = priv->active_rate_basic & 0xFF0;
475
476 /* Find lowest valid rate */
477 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
478 i = iwl_rates[i].next_ieee) {
479 if (rate_mask & (1 << i))
480 return iwl_rates[i].plcp;
481 }
482
483 /* No valid rate was found. Assign the lowest one */
484 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
485 return IWL_RATE_1M_PLCP;
486 else
487 return IWL_RATE_6M_PLCP;
488 }
489
490 unsigned int iwl4965_hw_get_beacon_cmd(struct iwl_priv *priv,
491 struct iwl_frame *frame, u8 rate)
492 {
493 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
494 unsigned int frame_size;
495
496 tx_beacon_cmd = &frame->u.beacon;
497 memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
498
499 tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
500 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
501
502 frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
503 iwl_bcast_addr,
504 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
505
506 BUG_ON(frame_size > MAX_MPDU_SIZE);
507 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
508
509 if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
510 tx_beacon_cmd->tx.rate_n_flags =
511 iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
512 else
513 tx_beacon_cmd->tx.rate_n_flags =
514 iwl_hw_set_rate_n_flags(rate, 0);
515
516 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
517 TX_CMD_FLG_TSF_MSK |
518 TX_CMD_FLG_STA_RATE_MSK;
519
520 return sizeof(*tx_beacon_cmd) + frame_size;
521 }
522 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
523 {
524 struct iwl_frame *frame;
525 unsigned int frame_size;
526 int rc;
527 u8 rate;
528
529 frame = iwl_get_free_frame(priv);
530
531 if (!frame) {
532 IWL_ERROR("Could not obtain free frame buffer for beacon "
533 "command.\n");
534 return -ENOMEM;
535 }
536
537 rate = iwl4965_rate_get_lowest_plcp(priv);
538
539 frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
540
541 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
542 &frame->u.cmd[0]);
543
544 iwl_free_frame(priv, frame);
545
546 return rc;
547 }
548
549 /******************************************************************************
550 *
551 * Misc. internal state and helper functions
552 *
553 ******************************************************************************/
554
555 static void iwl4965_ht_conf(struct iwl_priv *priv,
556 struct ieee80211_bss_conf *bss_conf)
557 {
558 struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
559 struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
560 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
561
562 IWL_DEBUG_MAC80211("enter: \n");
563
564 iwl_conf->is_ht = bss_conf->assoc_ht;
565
566 if (!iwl_conf->is_ht)
567 return;
568
569 priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
570
571 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
572 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
573 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
574 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
575
576 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
577 iwl_conf->max_amsdu_size =
578 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
579
580 iwl_conf->supported_chan_width =
581 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
582 iwl_conf->extension_chan_offset =
583 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
584 /* If no above or below channel supplied disable FAT channel */
585 if (iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_ABOVE &&
586 iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_BELOW) {
587 iwl_conf->extension_chan_offset = IEEE80211_HT_IE_CHA_SEC_NONE;
588 iwl_conf->supported_chan_width = 0;
589 }
590
591 iwl_conf->tx_mimo_ps_mode =
592 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
593 memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
594
595 iwl_conf->control_channel = ht_bss_conf->primary_channel;
596 iwl_conf->tx_chan_width =
597 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
598 iwl_conf->ht_protection =
599 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
600 iwl_conf->non_GF_STA_present =
601 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
602
603 IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
604 IWL_DEBUG_MAC80211("leave\n");
605 }
606
607 /*
608 * QoS support
609 */
610 static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
611 {
612 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
613 return;
614
615 if (!priv->qos_data.qos_enable)
616 return;
617
618 priv->qos_data.def_qos_parm.qos_flags = 0;
619
620 if (priv->qos_data.qos_cap.q_AP.queue_request &&
621 !priv->qos_data.qos_cap.q_AP.txop_request)
622 priv->qos_data.def_qos_parm.qos_flags |=
623 QOS_PARAM_FLG_TXOP_TYPE_MSK;
624 if (priv->qos_data.qos_active)
625 priv->qos_data.def_qos_parm.qos_flags |=
626 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
627
628 if (priv->current_ht_config.is_ht)
629 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
630
631 if (force || iwl_is_associated(priv)) {
632 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
633 priv->qos_data.qos_active,
634 priv->qos_data.def_qos_parm.qos_flags);
635
636 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
637 sizeof(struct iwl_qosparam_cmd),
638 &priv->qos_data.def_qos_parm, NULL);
639 }
640 }
641
642 #define MAX_UCODE_BEACON_INTERVAL 4096
643
644 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
645 {
646 u16 new_val = 0;
647 u16 beacon_factor = 0;
648
649 beacon_factor =
650 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
651 / MAX_UCODE_BEACON_INTERVAL;
652 new_val = beacon_val / beacon_factor;
653
654 return cpu_to_le16(new_val);
655 }
656
657 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
658 {
659 u64 interval_tm_unit;
660 u64 tsf, result;
661 unsigned long flags;
662 struct ieee80211_conf *conf = NULL;
663 u16 beacon_int = 0;
664
665 conf = ieee80211_get_hw_conf(priv->hw);
666
667 spin_lock_irqsave(&priv->lock, flags);
668 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
669 priv->rxon_timing.timestamp.dw[0] =
670 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
671
672 priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
673
674 tsf = priv->timestamp;
675
676 beacon_int = priv->beacon_int;
677 spin_unlock_irqrestore(&priv->lock, flags);
678
679 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
680 if (beacon_int == 0) {
681 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
682 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
683 } else {
684 priv->rxon_timing.beacon_interval =
685 cpu_to_le16(beacon_int);
686 priv->rxon_timing.beacon_interval =
687 iwl4965_adjust_beacon_interval(
688 le16_to_cpu(priv->rxon_timing.beacon_interval));
689 }
690
691 priv->rxon_timing.atim_window = 0;
692 } else {
693 priv->rxon_timing.beacon_interval =
694 iwl4965_adjust_beacon_interval(conf->beacon_int);
695 /* TODO: we need to get atim_window from upper stack
696 * for now we set to 0 */
697 priv->rxon_timing.atim_window = 0;
698 }
699
700 interval_tm_unit =
701 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
702 result = do_div(tsf, interval_tm_unit);
703 priv->rxon_timing.beacon_init_val =
704 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
705
706 IWL_DEBUG_ASSOC
707 ("beacon interval %d beacon timer %d beacon tim %d\n",
708 le16_to_cpu(priv->rxon_timing.beacon_interval),
709 le32_to_cpu(priv->rxon_timing.beacon_init_val),
710 le16_to_cpu(priv->rxon_timing.atim_window));
711 }
712
713 static void iwl_set_flags_for_band(struct iwl_priv *priv,
714 enum ieee80211_band band)
715 {
716 if (band == IEEE80211_BAND_5GHZ) {
717 priv->staging_rxon.flags &=
718 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
719 | RXON_FLG_CCK_MSK);
720 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
721 } else {
722 /* Copied from iwl4965_post_associate() */
723 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
724 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
725 else
726 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
727
728 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
729 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
730
731 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
732 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
733 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
734 }
735 }
736
737 /*
738 * initialize rxon structure with default values from eeprom
739 */
740 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
741 {
742 const struct iwl_channel_info *ch_info;
743
744 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
745
746 switch (priv->iw_mode) {
747 case IEEE80211_IF_TYPE_AP:
748 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
749 break;
750
751 case IEEE80211_IF_TYPE_STA:
752 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
753 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
754 break;
755
756 case IEEE80211_IF_TYPE_IBSS:
757 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
758 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
759 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
760 RXON_FILTER_ACCEPT_GRP_MSK;
761 break;
762
763 case IEEE80211_IF_TYPE_MNTR:
764 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
765 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
766 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
767 break;
768 default:
769 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
770 break;
771 }
772
773 #if 0
774 /* TODO: Figure out when short_preamble would be set and cache from
775 * that */
776 if (!hw_to_local(priv->hw)->short_preamble)
777 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
778 else
779 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
780 #endif
781
782 ch_info = iwl_get_channel_info(priv, priv->band,
783 le16_to_cpu(priv->active_rxon.channel));
784
785 if (!ch_info)
786 ch_info = &priv->channel_info[0];
787
788 /*
789 * in some case A channels are all non IBSS
790 * in this case force B/G channel
791 */
792 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
793 !(is_channel_ibss(ch_info)))
794 ch_info = &priv->channel_info[0];
795
796 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
797 priv->band = ch_info->band;
798
799 iwl_set_flags_for_band(priv, priv->band);
800
801 priv->staging_rxon.ofdm_basic_rates =
802 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
803 priv->staging_rxon.cck_basic_rates =
804 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
805
806 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
807 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
808 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
809 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
810 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
811 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
812 iwl_set_rxon_chain(priv);
813 }
814
815 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
816 {
817 priv->iw_mode = mode;
818
819 iwl4965_connection_init_rx_config(priv);
820 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
821
822 iwl_clear_stations_table(priv);
823
824 /* dont commit rxon if rf-kill is on*/
825 if (!iwl_is_ready_rf(priv))
826 return -EAGAIN;
827
828 cancel_delayed_work(&priv->scan_check);
829 if (iwl_scan_cancel_timeout(priv, 100)) {
830 IWL_WARNING("Aborted scan still in progress after 100ms\n");
831 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
832 return -EAGAIN;
833 }
834
835 iwl4965_commit_rxon(priv);
836
837 return 0;
838 }
839
840 static void iwl4965_set_rate(struct iwl_priv *priv)
841 {
842 const struct ieee80211_supported_band *hw = NULL;
843 struct ieee80211_rate *rate;
844 int i;
845
846 hw = iwl_get_hw_mode(priv, priv->band);
847 if (!hw) {
848 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
849 return;
850 }
851
852 priv->active_rate = 0;
853 priv->active_rate_basic = 0;
854
855 for (i = 0; i < hw->n_bitrates; i++) {
856 rate = &(hw->bitrates[i]);
857 if (rate->hw_value < IWL_RATE_COUNT)
858 priv->active_rate |= (1 << rate->hw_value);
859 }
860
861 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
862 priv->active_rate, priv->active_rate_basic);
863
864 /*
865 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
866 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
867 * OFDM
868 */
869 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
870 priv->staging_rxon.cck_basic_rates =
871 ((priv->active_rate_basic &
872 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
873 else
874 priv->staging_rxon.cck_basic_rates =
875 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
876
877 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
878 priv->staging_rxon.ofdm_basic_rates =
879 ((priv->active_rate_basic &
880 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
881 IWL_FIRST_OFDM_RATE) & 0xFF;
882 else
883 priv->staging_rxon.ofdm_basic_rates =
884 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
885 }
886
887 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
888
889 #include "iwl-spectrum.h"
890
891 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
892 #define BEACON_TIME_MASK_HIGH 0xFF000000
893 #define TIME_UNIT 1024
894
895 /*
896 * extended beacon time format
897 * time in usec will be changed into a 32-bit value in 8:24 format
898 * the high 1 byte is the beacon counts
899 * the lower 3 bytes is the time in usec within one beacon interval
900 */
901
902 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
903 {
904 u32 quot;
905 u32 rem;
906 u32 interval = beacon_interval * 1024;
907
908 if (!interval || !usec)
909 return 0;
910
911 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
912 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
913
914 return (quot << 24) + rem;
915 }
916
917 /* base is usually what we get from ucode with each received frame,
918 * the same as HW timer counter counting down
919 */
920
921 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
922 {
923 u32 base_low = base & BEACON_TIME_MASK_LOW;
924 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
925 u32 interval = beacon_interval * TIME_UNIT;
926 u32 res = (base & BEACON_TIME_MASK_HIGH) +
927 (addon & BEACON_TIME_MASK_HIGH);
928
929 if (base_low > addon_low)
930 res += base_low - addon_low;
931 else if (base_low < addon_low) {
932 res += interval + base_low - addon_low;
933 res += (1 << 24);
934 } else
935 res += (1 << 24);
936
937 return cpu_to_le32(res);
938 }
939
940 static int iwl4965_get_measurement(struct iwl_priv *priv,
941 struct ieee80211_measurement_params *params,
942 u8 type)
943 {
944 struct iwl4965_spectrum_cmd spectrum;
945 struct iwl_rx_packet *res;
946 struct iwl_host_cmd cmd = {
947 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
948 .data = (void *)&spectrum,
949 .meta.flags = CMD_WANT_SKB,
950 };
951 u32 add_time = le64_to_cpu(params->start_time);
952 int rc;
953 int spectrum_resp_status;
954 int duration = le16_to_cpu(params->duration);
955
956 if (iwl_is_associated(priv))
957 add_time =
958 iwl4965_usecs_to_beacons(
959 le64_to_cpu(params->start_time) - priv->last_tsf,
960 le16_to_cpu(priv->rxon_timing.beacon_interval));
961
962 memset(&spectrum, 0, sizeof(spectrum));
963
964 spectrum.channel_count = cpu_to_le16(1);
965 spectrum.flags =
966 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
967 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
968 cmd.len = sizeof(spectrum);
969 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
970
971 if (iwl_is_associated(priv))
972 spectrum.start_time =
973 iwl4965_add_beacon_time(priv->last_beacon_time,
974 add_time,
975 le16_to_cpu(priv->rxon_timing.beacon_interval));
976 else
977 spectrum.start_time = 0;
978
979 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
980 spectrum.channels[0].channel = params->channel;
981 spectrum.channels[0].type = type;
982 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
983 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
984 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
985
986 rc = iwl_send_cmd_sync(priv, &cmd);
987 if (rc)
988 return rc;
989
990 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
991 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
992 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
993 rc = -EIO;
994 }
995
996 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
997 switch (spectrum_resp_status) {
998 case 0: /* Command will be handled */
999 if (res->u.spectrum.id != 0xff) {
1000 IWL_DEBUG_INFO
1001 ("Replaced existing measurement: %d\n",
1002 res->u.spectrum.id);
1003 priv->measurement_status &= ~MEASUREMENT_READY;
1004 }
1005 priv->measurement_status |= MEASUREMENT_ACTIVE;
1006 rc = 0;
1007 break;
1008
1009 case 1: /* Command will not be handled */
1010 rc = -EAGAIN;
1011 break;
1012 }
1013
1014 dev_kfree_skb_any(cmd.meta.u.skb);
1015
1016 return rc;
1017 }
1018 #endif
1019
1020 /******************************************************************************
1021 *
1022 * Generic RX handler implementations
1023 *
1024 ******************************************************************************/
1025 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1026 struct iwl_rx_mem_buffer *rxb)
1027 {
1028 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1029 struct iwl_alive_resp *palive;
1030 struct delayed_work *pwork;
1031
1032 palive = &pkt->u.alive_frame;
1033
1034 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1035 "0x%01X 0x%01X\n",
1036 palive->is_valid, palive->ver_type,
1037 palive->ver_subtype);
1038
1039 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1040 IWL_DEBUG_INFO("Initialization Alive received.\n");
1041 memcpy(&priv->card_alive_init,
1042 &pkt->u.alive_frame,
1043 sizeof(struct iwl_init_alive_resp));
1044 pwork = &priv->init_alive_start;
1045 } else {
1046 IWL_DEBUG_INFO("Runtime Alive received.\n");
1047 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1048 sizeof(struct iwl_alive_resp));
1049 pwork = &priv->alive_start;
1050 }
1051
1052 /* We delay the ALIVE response by 5ms to
1053 * give the HW RF Kill time to activate... */
1054 if (palive->is_valid == UCODE_VALID_OK)
1055 queue_delayed_work(priv->workqueue, pwork,
1056 msecs_to_jiffies(5));
1057 else
1058 IWL_WARNING("uCode did not respond OK.\n");
1059 }
1060
1061 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1062 struct iwl_rx_mem_buffer *rxb)
1063 {
1064 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1065
1066 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1067 "seq 0x%04X ser 0x%08X\n",
1068 le32_to_cpu(pkt->u.err_resp.error_type),
1069 get_cmd_string(pkt->u.err_resp.cmd_id),
1070 pkt->u.err_resp.cmd_id,
1071 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1072 le32_to_cpu(pkt->u.err_resp.error_info));
1073 }
1074
1075 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1076
1077 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1078 {
1079 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1080 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1081 struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1082 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1083 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1084 rxon->channel = csa->channel;
1085 priv->staging_rxon.channel = csa->channel;
1086 }
1087
1088 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1089 struct iwl_rx_mem_buffer *rxb)
1090 {
1091 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
1092 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1093 struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1094
1095 if (!report->state) {
1096 IWL_DEBUG(IWL_DL_11H,
1097 "Spectrum Measure Notification: Start\n");
1098 return;
1099 }
1100
1101 memcpy(&priv->measure_report, report, sizeof(*report));
1102 priv->measurement_status |= MEASUREMENT_READY;
1103 #endif
1104 }
1105
1106 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1107 struct iwl_rx_mem_buffer *rxb)
1108 {
1109 #ifdef CONFIG_IWLWIFI_DEBUG
1110 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1111 struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1112 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1113 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1114 #endif
1115 }
1116
1117 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1118 struct iwl_rx_mem_buffer *rxb)
1119 {
1120 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1121 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1122 "notification for %s:\n",
1123 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1124 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1125 }
1126
1127 static void iwl4965_bg_beacon_update(struct work_struct *work)
1128 {
1129 struct iwl_priv *priv =
1130 container_of(work, struct iwl_priv, beacon_update);
1131 struct sk_buff *beacon;
1132
1133 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1134 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1135
1136 if (!beacon) {
1137 IWL_ERROR("update beacon failed\n");
1138 return;
1139 }
1140
1141 mutex_lock(&priv->mutex);
1142 /* new beacon skb is allocated every time; dispose previous.*/
1143 if (priv->ibss_beacon)
1144 dev_kfree_skb(priv->ibss_beacon);
1145
1146 priv->ibss_beacon = beacon;
1147 mutex_unlock(&priv->mutex);
1148
1149 iwl4965_send_beacon_cmd(priv);
1150 }
1151
1152 /**
1153 * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1154 *
1155 * This callback is provided in order to send a statistics request.
1156 *
1157 * This timer function is continually reset to execute within
1158 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1159 * was received. We need to ensure we receive the statistics in order
1160 * to update the temperature used for calibrating the TXPOWER.
1161 */
1162 static void iwl4965_bg_statistics_periodic(unsigned long data)
1163 {
1164 struct iwl_priv *priv = (struct iwl_priv *)data;
1165
1166 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1167 return;
1168
1169 iwl_send_statistics_request(priv, CMD_ASYNC);
1170 }
1171
1172 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1173 struct iwl_rx_mem_buffer *rxb)
1174 {
1175 #ifdef CONFIG_IWLWIFI_DEBUG
1176 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1177 struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1178 u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1179
1180 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1181 "tsf %d %d rate %d\n",
1182 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1183 beacon->beacon_notify_hdr.failure_frame,
1184 le32_to_cpu(beacon->ibss_mgr_status),
1185 le32_to_cpu(beacon->high_tsf),
1186 le32_to_cpu(beacon->low_tsf), rate);
1187 #endif
1188
1189 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
1190 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1191 queue_work(priv->workqueue, &priv->beacon_update);
1192 }
1193
1194 /* Handle notification from uCode that card's power state is changing
1195 * due to software, hardware, or critical temperature RFKILL */
1196 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1197 struct iwl_rx_mem_buffer *rxb)
1198 {
1199 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1200 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1201 unsigned long status = priv->status;
1202
1203 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1204 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1205 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1206
1207 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1208 RF_CARD_DISABLED)) {
1209
1210 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1211 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1212
1213 if (!iwl_grab_nic_access(priv)) {
1214 iwl_write_direct32(
1215 priv, HBUS_TARG_MBX_C,
1216 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1217
1218 iwl_release_nic_access(priv);
1219 }
1220
1221 if (!(flags & RXON_CARD_DISABLED)) {
1222 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1223 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1224 if (!iwl_grab_nic_access(priv)) {
1225 iwl_write_direct32(
1226 priv, HBUS_TARG_MBX_C,
1227 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1228
1229 iwl_release_nic_access(priv);
1230 }
1231 }
1232
1233 if (flags & RF_CARD_DISABLED) {
1234 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1235 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1236 iwl_read32(priv, CSR_UCODE_DRV_GP1);
1237 if (!iwl_grab_nic_access(priv))
1238 iwl_release_nic_access(priv);
1239 }
1240 }
1241
1242 if (flags & HW_CARD_DISABLED)
1243 set_bit(STATUS_RF_KILL_HW, &priv->status);
1244 else
1245 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1246
1247
1248 if (flags & SW_CARD_DISABLED)
1249 set_bit(STATUS_RF_KILL_SW, &priv->status);
1250 else
1251 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1252
1253 if (!(flags & RXON_CARD_DISABLED))
1254 iwl_scan_cancel(priv);
1255
1256 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1257 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1258 (test_bit(STATUS_RF_KILL_SW, &status) !=
1259 test_bit(STATUS_RF_KILL_SW, &priv->status)))
1260 queue_work(priv->workqueue, &priv->rf_kill);
1261 else
1262 wake_up_interruptible(&priv->wait_command_queue);
1263 }
1264
1265 int iwl4965_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
1266 {
1267 int ret;
1268 unsigned long flags;
1269
1270 spin_lock_irqsave(&priv->lock, flags);
1271 ret = iwl_grab_nic_access(priv);
1272 if (ret)
1273 goto err;
1274
1275 if (src == IWL_PWR_SRC_VAUX) {
1276 u32 val;
1277 ret = pci_read_config_dword(priv->pci_dev, PCI_POWER_SOURCE,
1278 &val);
1279
1280 if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT)
1281 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1282 APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
1283 ~APMG_PS_CTRL_MSK_PWR_SRC);
1284 } else {
1285 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1286 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
1287 ~APMG_PS_CTRL_MSK_PWR_SRC);
1288 }
1289
1290 iwl_release_nic_access(priv);
1291 err:
1292 spin_unlock_irqrestore(&priv->lock, flags);
1293 return ret;
1294 }
1295
1296 /**
1297 * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1298 *
1299 * Setup the RX handlers for each of the reply types sent from the uCode
1300 * to the host.
1301 *
1302 * This function chains into the hardware specific files for them to setup
1303 * any hardware specific handlers as well.
1304 */
1305 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1306 {
1307 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1308 priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1309 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1310 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1311 iwl4965_rx_spectrum_measure_notif;
1312 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1313 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1314 iwl4965_rx_pm_debug_statistics_notif;
1315 priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1316
1317 /*
1318 * The same handler is used for both the REPLY to a discrete
1319 * statistics request from the host as well as for the periodic
1320 * statistics notifications (after received beacons) from the uCode.
1321 */
1322 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1323 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1324
1325 iwl_setup_rx_scan_handlers(priv);
1326
1327 /* status change handler */
1328 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1329
1330 priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1331 iwl_rx_missed_beacon_notif;
1332 /* Rx handlers */
1333 priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1334 priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1335 /* block ack */
1336 priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1337 /* Set up hardware specific Rx handlers */
1338 priv->cfg->ops->lib->rx_handler_setup(priv);
1339 }
1340
1341 /*
1342 * this should be called while priv->lock is locked
1343 */
1344 static void __iwl_rx_replenish(struct iwl_priv *priv)
1345 {
1346 iwl_rx_allocate(priv);
1347 iwl_rx_queue_restock(priv);
1348 }
1349
1350
1351 /**
1352 * iwl_rx_handle - Main entry function for receiving responses from uCode
1353 *
1354 * Uses the priv->rx_handlers callback function array to invoke
1355 * the appropriate handlers, including command responses,
1356 * frame-received notifications, and other notifications.
1357 */
1358 void iwl_rx_handle(struct iwl_priv *priv)
1359 {
1360 struct iwl_rx_mem_buffer *rxb;
1361 struct iwl_rx_packet *pkt;
1362 struct iwl_rx_queue *rxq = &priv->rxq;
1363 u32 r, i;
1364 int reclaim;
1365 unsigned long flags;
1366 u8 fill_rx = 0;
1367 u32 count = 8;
1368
1369 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1370 * buffer that the driver may process (last buffer filled by ucode). */
1371 r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1372 i = rxq->read;
1373
1374 /* Rx interrupt, but nothing sent from uCode */
1375 if (i == r)
1376 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1377
1378 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1379 fill_rx = 1;
1380
1381 while (i != r) {
1382 rxb = rxq->queue[i];
1383
1384 /* If an RXB doesn't have a Rx queue slot associated with it,
1385 * then a bug has been introduced in the queue refilling
1386 * routines -- catch it here */
1387 BUG_ON(rxb == NULL);
1388
1389 rxq->queue[i] = NULL;
1390
1391 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1392 priv->hw_params.rx_buf_size,
1393 PCI_DMA_FROMDEVICE);
1394 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1395
1396 /* Reclaim a command buffer only if this packet is a response
1397 * to a (driver-originated) command.
1398 * If the packet (e.g. Rx frame) originated from uCode,
1399 * there is no command buffer to reclaim.
1400 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1401 * but apparently a few don't get set; catch them here. */
1402 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1403 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1404 (pkt->hdr.cmd != REPLY_RX) &&
1405 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1406 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1407 (pkt->hdr.cmd != REPLY_TX);
1408
1409 /* Based on type of command response or notification,
1410 * handle those that need handling via function in
1411 * rx_handlers table. See iwl4965_setup_rx_handlers() */
1412 if (priv->rx_handlers[pkt->hdr.cmd]) {
1413 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1414 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1415 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1416 } else {
1417 /* No handling needed */
1418 IWL_DEBUG(IWL_DL_RX,
1419 "r %d i %d No handler needed for %s, 0x%02x\n",
1420 r, i, get_cmd_string(pkt->hdr.cmd),
1421 pkt->hdr.cmd);
1422 }
1423
1424 if (reclaim) {
1425 /* Invoke any callbacks, transfer the skb to caller, and
1426 * fire off the (possibly) blocking iwl_send_cmd()
1427 * as we reclaim the driver command queue */
1428 if (rxb && rxb->skb)
1429 iwl_tx_cmd_complete(priv, rxb);
1430 else
1431 IWL_WARNING("Claim null rxb?\n");
1432 }
1433
1434 /* For now we just don't re-use anything. We can tweak this
1435 * later to try and re-use notification packets and SKBs that
1436 * fail to Rx correctly */
1437 if (rxb->skb != NULL) {
1438 priv->alloc_rxb_skb--;
1439 dev_kfree_skb_any(rxb->skb);
1440 rxb->skb = NULL;
1441 }
1442
1443 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
1444 priv->hw_params.rx_buf_size,
1445 PCI_DMA_FROMDEVICE);
1446 spin_lock_irqsave(&rxq->lock, flags);
1447 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1448 spin_unlock_irqrestore(&rxq->lock, flags);
1449 i = (i + 1) & RX_QUEUE_MASK;
1450 /* If there are a lot of unused frames,
1451 * restock the Rx queue so ucode wont assert. */
1452 if (fill_rx) {
1453 count++;
1454 if (count >= 8) {
1455 priv->rxq.read = i;
1456 __iwl_rx_replenish(priv);
1457 count = 0;
1458 }
1459 }
1460 }
1461
1462 /* Backtrack one entry */
1463 priv->rxq.read = i;
1464 iwl_rx_queue_restock(priv);
1465 }
1466
1467 #ifdef CONFIG_IWLWIFI_DEBUG
1468 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
1469 {
1470 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1471 DECLARE_MAC_BUF(mac);
1472
1473 IWL_DEBUG_RADIO("RX CONFIG:\n");
1474 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1475 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1476 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1477 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1478 le32_to_cpu(rxon->filter_flags));
1479 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1480 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1481 rxon->ofdm_basic_rates);
1482 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1483 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
1484 print_mac(mac, rxon->node_addr));
1485 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
1486 print_mac(mac, rxon->bssid_addr));
1487 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1488 }
1489 #endif
1490
1491 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
1492 {
1493 IWL_DEBUG_ISR("Enabling interrupts\n");
1494 set_bit(STATUS_INT_ENABLED, &priv->status);
1495 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1496 }
1497
1498 /* call this function to flush any scheduled tasklet */
1499 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1500 {
1501 /* wait to make sure we flush pedding tasklet*/
1502 synchronize_irq(priv->pci_dev->irq);
1503 tasklet_kill(&priv->irq_tasklet);
1504 }
1505
1506 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
1507 {
1508 clear_bit(STATUS_INT_ENABLED, &priv->status);
1509
1510 /* disable interrupts from uCode/NIC to host */
1511 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1512
1513 /* acknowledge/clear/reset any interrupts still pending
1514 * from uCode or flow handler (Rx/Tx DMA) */
1515 iwl_write32(priv, CSR_INT, 0xffffffff);
1516 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1517 IWL_DEBUG_ISR("Disabled interrupts\n");
1518 }
1519
1520
1521 /**
1522 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
1523 */
1524 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
1525 {
1526 /* Set the FW error flag -- cleared on iwl4965_down */
1527 set_bit(STATUS_FW_ERROR, &priv->status);
1528
1529 /* Cancel currently queued command. */
1530 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1531
1532 #ifdef CONFIG_IWLWIFI_DEBUG
1533 if (priv->debug_level & IWL_DL_FW_ERRORS) {
1534 iwl_dump_nic_error_log(priv);
1535 iwl_dump_nic_event_log(priv);
1536 iwl4965_print_rx_config_cmd(priv);
1537 }
1538 #endif
1539
1540 wake_up_interruptible(&priv->wait_command_queue);
1541
1542 /* Keep the restart process from trying to send host
1543 * commands by clearing the INIT status bit */
1544 clear_bit(STATUS_READY, &priv->status);
1545
1546 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1547 IWL_DEBUG(IWL_DL_FW_ERRORS,
1548 "Restarting adapter due to uCode error.\n");
1549
1550 if (iwl_is_associated(priv)) {
1551 memcpy(&priv->recovery_rxon, &priv->active_rxon,
1552 sizeof(priv->recovery_rxon));
1553 priv->error_recovering = 1;
1554 }
1555 if (priv->cfg->mod_params->restart_fw)
1556 queue_work(priv->workqueue, &priv->restart);
1557 }
1558 }
1559
1560 static void iwl4965_error_recovery(struct iwl_priv *priv)
1561 {
1562 unsigned long flags;
1563
1564 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1565 sizeof(priv->staging_rxon));
1566 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1567 iwl4965_commit_rxon(priv);
1568
1569 iwl_rxon_add_station(priv, priv->bssid, 1);
1570
1571 spin_lock_irqsave(&priv->lock, flags);
1572 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1573 priv->error_recovering = 0;
1574 spin_unlock_irqrestore(&priv->lock, flags);
1575 }
1576
1577 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
1578 {
1579 u32 inta, handled = 0;
1580 u32 inta_fh;
1581 unsigned long flags;
1582 #ifdef CONFIG_IWLWIFI_DEBUG
1583 u32 inta_mask;
1584 #endif
1585
1586 spin_lock_irqsave(&priv->lock, flags);
1587
1588 /* Ack/clear/reset pending uCode interrupts.
1589 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1590 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1591 inta = iwl_read32(priv, CSR_INT);
1592 iwl_write32(priv, CSR_INT, inta);
1593
1594 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1595 * Any new interrupts that happen after this, either while we're
1596 * in this tasklet, or later, will show up in next ISR/tasklet. */
1597 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1598 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1599
1600 #ifdef CONFIG_IWLWIFI_DEBUG
1601 if (priv->debug_level & IWL_DL_ISR) {
1602 /* just for debug */
1603 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1604 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1605 inta, inta_mask, inta_fh);
1606 }
1607 #endif
1608
1609 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1610 * atomic, make sure that inta covers all the interrupts that
1611 * we've discovered, even if FH interrupt came in just after
1612 * reading CSR_INT. */
1613 if (inta_fh & CSR49_FH_INT_RX_MASK)
1614 inta |= CSR_INT_BIT_FH_RX;
1615 if (inta_fh & CSR49_FH_INT_TX_MASK)
1616 inta |= CSR_INT_BIT_FH_TX;
1617
1618 /* Now service all interrupt bits discovered above. */
1619 if (inta & CSR_INT_BIT_HW_ERR) {
1620 IWL_ERROR("Microcode HW error detected. Restarting.\n");
1621
1622 /* Tell the device to stop sending interrupts */
1623 iwl4965_disable_interrupts(priv);
1624
1625 iwl4965_irq_handle_error(priv);
1626
1627 handled |= CSR_INT_BIT_HW_ERR;
1628
1629 spin_unlock_irqrestore(&priv->lock, flags);
1630
1631 return;
1632 }
1633
1634 #ifdef CONFIG_IWLWIFI_DEBUG
1635 if (priv->debug_level & (IWL_DL_ISR)) {
1636 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1637 if (inta & CSR_INT_BIT_SCD)
1638 IWL_DEBUG_ISR("Scheduler finished to transmit "
1639 "the frame/frames.\n");
1640
1641 /* Alive notification via Rx interrupt will do the real work */
1642 if (inta & CSR_INT_BIT_ALIVE)
1643 IWL_DEBUG_ISR("Alive interrupt\n");
1644 }
1645 #endif
1646 /* Safely ignore these bits for debug checks below */
1647 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1648
1649 /* HW RF KILL switch toggled */
1650 if (inta & CSR_INT_BIT_RF_KILL) {
1651 int hw_rf_kill = 0;
1652 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1653 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1654 hw_rf_kill = 1;
1655
1656 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1657 hw_rf_kill ? "disable radio":"enable radio");
1658
1659 /* driver only loads ucode once setting the interface up.
1660 * the driver as well won't allow loading if RFKILL is set
1661 * therefore no need to restart the driver from this handler
1662 */
1663 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
1664 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1665
1666 handled |= CSR_INT_BIT_RF_KILL;
1667 }
1668
1669 /* Chip got too hot and stopped itself */
1670 if (inta & CSR_INT_BIT_CT_KILL) {
1671 IWL_ERROR("Microcode CT kill error detected.\n");
1672 handled |= CSR_INT_BIT_CT_KILL;
1673 }
1674
1675 /* Error detected by uCode */
1676 if (inta & CSR_INT_BIT_SW_ERR) {
1677 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
1678 inta);
1679 iwl4965_irq_handle_error(priv);
1680 handled |= CSR_INT_BIT_SW_ERR;
1681 }
1682
1683 /* uCode wakes up after power-down sleep */
1684 if (inta & CSR_INT_BIT_WAKEUP) {
1685 IWL_DEBUG_ISR("Wakeup interrupt\n");
1686 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1687 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1688 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1689 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1690 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1691 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1692 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1693
1694 handled |= CSR_INT_BIT_WAKEUP;
1695 }
1696
1697 /* All uCode command responses, including Tx command responses,
1698 * Rx "responses" (frame-received notification), and other
1699 * notifications from uCode come through here*/
1700 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1701 iwl_rx_handle(priv);
1702 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1703 }
1704
1705 if (inta & CSR_INT_BIT_FH_TX) {
1706 IWL_DEBUG_ISR("Tx interrupt\n");
1707 handled |= CSR_INT_BIT_FH_TX;
1708 /* FH finished to write, send event */
1709 priv->ucode_write_complete = 1;
1710 wake_up_interruptible(&priv->wait_command_queue);
1711 }
1712
1713 if (inta & ~handled)
1714 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1715
1716 if (inta & ~CSR_INI_SET_MASK) {
1717 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1718 inta & ~CSR_INI_SET_MASK);
1719 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
1720 }
1721
1722 /* Re-enable all interrupts */
1723 /* only Re-enable if diabled by irq */
1724 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1725 iwl4965_enable_interrupts(priv);
1726
1727 #ifdef CONFIG_IWLWIFI_DEBUG
1728 if (priv->debug_level & (IWL_DL_ISR)) {
1729 inta = iwl_read32(priv, CSR_INT);
1730 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1731 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1732 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1733 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1734 }
1735 #endif
1736 spin_unlock_irqrestore(&priv->lock, flags);
1737 }
1738
1739 static irqreturn_t iwl4965_isr(int irq, void *data)
1740 {
1741 struct iwl_priv *priv = data;
1742 u32 inta, inta_mask;
1743 u32 inta_fh;
1744 if (!priv)
1745 return IRQ_NONE;
1746
1747 spin_lock(&priv->lock);
1748
1749 /* Disable (but don't clear!) interrupts here to avoid
1750 * back-to-back ISRs and sporadic interrupts from our NIC.
1751 * If we have something to service, the tasklet will re-enable ints.
1752 * If we *don't* have something, we'll re-enable before leaving here. */
1753 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
1754 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1755
1756 /* Discover which interrupts are active/pending */
1757 inta = iwl_read32(priv, CSR_INT);
1758 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1759
1760 /* Ignore interrupt if there's nothing in NIC to service.
1761 * This may be due to IRQ shared with another device,
1762 * or due to sporadic interrupts thrown from our NIC. */
1763 if (!inta && !inta_fh) {
1764 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1765 goto none;
1766 }
1767
1768 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1769 /* Hardware disappeared. It might have already raised
1770 * an interrupt */
1771 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1772 goto unplugged;
1773 }
1774
1775 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1776 inta, inta_mask, inta_fh);
1777
1778 inta &= ~CSR_INT_BIT_SCD;
1779
1780 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
1781 if (likely(inta || inta_fh))
1782 tasklet_schedule(&priv->irq_tasklet);
1783
1784 unplugged:
1785 spin_unlock(&priv->lock);
1786 return IRQ_HANDLED;
1787
1788 none:
1789 /* re-enable interrupts here since we don't have anything to service. */
1790 /* only Re-enable if diabled by irq */
1791 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1792 iwl4965_enable_interrupts(priv);
1793 spin_unlock(&priv->lock);
1794 return IRQ_NONE;
1795 }
1796
1797 /******************************************************************************
1798 *
1799 * uCode download functions
1800 *
1801 ******************************************************************************/
1802
1803 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
1804 {
1805 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1806 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1807 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1808 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1809 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1810 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1811 }
1812
1813 static void iwl4965_nic_start(struct iwl_priv *priv)
1814 {
1815 /* Remove all resets to allow NIC to operate */
1816 iwl_write32(priv, CSR_RESET, 0);
1817 }
1818
1819
1820 /**
1821 * iwl4965_read_ucode - Read uCode images from disk file.
1822 *
1823 * Copy into buffers for card to fetch via bus-mastering
1824 */
1825 static int iwl4965_read_ucode(struct iwl_priv *priv)
1826 {
1827 struct iwl_ucode *ucode;
1828 int ret;
1829 const struct firmware *ucode_raw;
1830 const char *name = priv->cfg->fw_name;
1831 u8 *src;
1832 size_t len;
1833 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
1834
1835 /* Ask kernel firmware_class module to get the boot firmware off disk.
1836 * request_firmware() is synchronous, file is in memory on return. */
1837 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
1838 if (ret < 0) {
1839 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1840 name, ret);
1841 goto error;
1842 }
1843
1844 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1845 name, ucode_raw->size);
1846
1847 /* Make sure that we got at least our header! */
1848 if (ucode_raw->size < sizeof(*ucode)) {
1849 IWL_ERROR("File size way too small!\n");
1850 ret = -EINVAL;
1851 goto err_release;
1852 }
1853
1854 /* Data from ucode file: header followed by uCode images */
1855 ucode = (void *)ucode_raw->data;
1856
1857 ver = le32_to_cpu(ucode->ver);
1858 inst_size = le32_to_cpu(ucode->inst_size);
1859 data_size = le32_to_cpu(ucode->data_size);
1860 init_size = le32_to_cpu(ucode->init_size);
1861 init_data_size = le32_to_cpu(ucode->init_data_size);
1862 boot_size = le32_to_cpu(ucode->boot_size);
1863
1864 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
1865 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1866 inst_size);
1867 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1868 data_size);
1869 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1870 init_size);
1871 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1872 init_data_size);
1873 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1874 boot_size);
1875
1876 /* Verify size of file vs. image size info in file's header */
1877 if (ucode_raw->size < sizeof(*ucode) +
1878 inst_size + data_size + init_size +
1879 init_data_size + boot_size) {
1880
1881 IWL_DEBUG_INFO("uCode file size %d too small\n",
1882 (int)ucode_raw->size);
1883 ret = -EINVAL;
1884 goto err_release;
1885 }
1886
1887 /* Verify that uCode images will fit in card's SRAM */
1888 if (inst_size > priv->hw_params.max_inst_size) {
1889 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1890 inst_size);
1891 ret = -EINVAL;
1892 goto err_release;
1893 }
1894
1895 if (data_size > priv->hw_params.max_data_size) {
1896 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1897 data_size);
1898 ret = -EINVAL;
1899 goto err_release;
1900 }
1901 if (init_size > priv->hw_params.max_inst_size) {
1902 IWL_DEBUG_INFO
1903 ("uCode init instr len %d too large to fit in\n",
1904 init_size);
1905 ret = -EINVAL;
1906 goto err_release;
1907 }
1908 if (init_data_size > priv->hw_params.max_data_size) {
1909 IWL_DEBUG_INFO
1910 ("uCode init data len %d too large to fit in\n",
1911 init_data_size);
1912 ret = -EINVAL;
1913 goto err_release;
1914 }
1915 if (boot_size > priv->hw_params.max_bsm_size) {
1916 IWL_DEBUG_INFO
1917 ("uCode boot instr len %d too large to fit in\n",
1918 boot_size);
1919 ret = -EINVAL;
1920 goto err_release;
1921 }
1922
1923 /* Allocate ucode buffers for card's bus-master loading ... */
1924
1925 /* Runtime instructions and 2 copies of data:
1926 * 1) unmodified from disk
1927 * 2) backup cache for save/restore during power-downs */
1928 priv->ucode_code.len = inst_size;
1929 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1930
1931 priv->ucode_data.len = data_size;
1932 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1933
1934 priv->ucode_data_backup.len = data_size;
1935 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1936
1937 /* Initialization instructions and data */
1938 if (init_size && init_data_size) {
1939 priv->ucode_init.len = init_size;
1940 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1941
1942 priv->ucode_init_data.len = init_data_size;
1943 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1944
1945 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1946 goto err_pci_alloc;
1947 }
1948
1949 /* Bootstrap (instructions only, no data) */
1950 if (boot_size) {
1951 priv->ucode_boot.len = boot_size;
1952 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1953
1954 if (!priv->ucode_boot.v_addr)
1955 goto err_pci_alloc;
1956 }
1957
1958 /* Copy images into buffers for card's bus-master reads ... */
1959
1960 /* Runtime instructions (first block of data in file) */
1961 src = &ucode->data[0];
1962 len = priv->ucode_code.len;
1963 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1964 memcpy(priv->ucode_code.v_addr, src, len);
1965 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1966 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1967
1968 /* Runtime data (2nd block)
1969 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
1970 src = &ucode->data[inst_size];
1971 len = priv->ucode_data.len;
1972 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1973 memcpy(priv->ucode_data.v_addr, src, len);
1974 memcpy(priv->ucode_data_backup.v_addr, src, len);
1975
1976 /* Initialization instructions (3rd block) */
1977 if (init_size) {
1978 src = &ucode->data[inst_size + data_size];
1979 len = priv->ucode_init.len;
1980 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1981 len);
1982 memcpy(priv->ucode_init.v_addr, src, len);
1983 }
1984
1985 /* Initialization data (4th block) */
1986 if (init_data_size) {
1987 src = &ucode->data[inst_size + data_size + init_size];
1988 len = priv->ucode_init_data.len;
1989 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1990 len);
1991 memcpy(priv->ucode_init_data.v_addr, src, len);
1992 }
1993
1994 /* Bootstrap instructions (5th block) */
1995 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1996 len = priv->ucode_boot.len;
1997 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1998 memcpy(priv->ucode_boot.v_addr, src, len);
1999
2000 /* We have our copies now, allow OS release its copies */
2001 release_firmware(ucode_raw);
2002 return 0;
2003
2004 err_pci_alloc:
2005 IWL_ERROR("failed to allocate pci memory\n");
2006 ret = -ENOMEM;
2007 iwl4965_dealloc_ucode_pci(priv);
2008
2009 err_release:
2010 release_firmware(ucode_raw);
2011
2012 error:
2013 return ret;
2014 }
2015
2016 /**
2017 * iwl_alive_start - called after REPLY_ALIVE notification received
2018 * from protocol/runtime uCode (initialization uCode's
2019 * Alive gets handled by iwl_init_alive_start()).
2020 */
2021 static void iwl_alive_start(struct iwl_priv *priv)
2022 {
2023 int ret = 0;
2024
2025 IWL_DEBUG_INFO("Runtime Alive received.\n");
2026
2027 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2028 /* We had an error bringing up the hardware, so take it
2029 * all the way back down so we can try again */
2030 IWL_DEBUG_INFO("Alive failed.\n");
2031 goto restart;
2032 }
2033
2034 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2035 * This is a paranoid check, because we would not have gotten the
2036 * "runtime" alive if code weren't properly loaded. */
2037 if (iwl_verify_ucode(priv)) {
2038 /* Runtime instruction load was bad;
2039 * take it all the way back down so we can try again */
2040 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
2041 goto restart;
2042 }
2043
2044 iwl_clear_stations_table(priv);
2045 ret = priv->cfg->ops->lib->alive_notify(priv);
2046 if (ret) {
2047 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
2048 ret);
2049 goto restart;
2050 }
2051
2052 /* After the ALIVE response, we can send host commands to 4965 uCode */
2053 set_bit(STATUS_ALIVE, &priv->status);
2054
2055 if (iwl_is_rfkill(priv))
2056 return;
2057
2058 ieee80211_wake_queues(priv->hw);
2059
2060 priv->active_rate = priv->rates_mask;
2061 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2062
2063 if (iwl_is_associated(priv)) {
2064 struct iwl_rxon_cmd *active_rxon =
2065 (struct iwl_rxon_cmd *)&priv->active_rxon;
2066
2067 memcpy(&priv->staging_rxon, &priv->active_rxon,
2068 sizeof(priv->staging_rxon));
2069 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2070 } else {
2071 /* Initialize our rx_config data */
2072 iwl4965_connection_init_rx_config(priv);
2073 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2074 }
2075
2076 /* Configure Bluetooth device coexistence support */
2077 iwl4965_send_bt_config(priv);
2078
2079 iwl_reset_run_time_calib(priv);
2080
2081 /* Configure the adapter for unassociated operation */
2082 iwl4965_commit_rxon(priv);
2083
2084 /* At this point, the NIC is initialized and operational */
2085 iwl_rf_kill_ct_config(priv);
2086
2087 iwl_leds_register(priv);
2088
2089 IWL_DEBUG_INFO("ALIVE processing complete.\n");
2090 set_bit(STATUS_READY, &priv->status);
2091 wake_up_interruptible(&priv->wait_command_queue);
2092
2093 if (priv->error_recovering)
2094 iwl4965_error_recovery(priv);
2095
2096 iwl_power_update_mode(priv, 1);
2097 ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2098
2099 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2100 iwl4965_set_mode(priv, priv->iw_mode);
2101
2102 return;
2103
2104 restart:
2105 queue_work(priv->workqueue, &priv->restart);
2106 }
2107
2108 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2109
2110 static void __iwl4965_down(struct iwl_priv *priv)
2111 {
2112 unsigned long flags;
2113 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2114
2115 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2116
2117 if (!exit_pending)
2118 set_bit(STATUS_EXIT_PENDING, &priv->status);
2119
2120 iwl_leds_unregister(priv);
2121
2122 iwl_clear_stations_table(priv);
2123
2124 /* Unblock any waiting calls */
2125 wake_up_interruptible_all(&priv->wait_command_queue);
2126
2127 /* Wipe out the EXIT_PENDING status bit if we are not actually
2128 * exiting the module */
2129 if (!exit_pending)
2130 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2131
2132 /* stop and reset the on-board processor */
2133 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2134
2135 /* tell the device to stop sending interrupts */
2136 spin_lock_irqsave(&priv->lock, flags);
2137 iwl4965_disable_interrupts(priv);
2138 spin_unlock_irqrestore(&priv->lock, flags);
2139 iwl_synchronize_irq(priv);
2140
2141 if (priv->mac80211_registered)
2142 ieee80211_stop_queues(priv->hw);
2143
2144 /* If we have not previously called iwl4965_init() then
2145 * clear all bits but the RF Kill and SUSPEND bits and return */
2146 if (!iwl_is_init(priv)) {
2147 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2148 STATUS_RF_KILL_HW |
2149 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2150 STATUS_RF_KILL_SW |
2151 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2152 STATUS_GEO_CONFIGURED |
2153 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2154 STATUS_IN_SUSPEND |
2155 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2156 STATUS_EXIT_PENDING;
2157 goto exit;
2158 }
2159
2160 /* ...otherwise clear out all the status bits but the RF Kill and
2161 * SUSPEND bits and continue taking the NIC down. */
2162 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2163 STATUS_RF_KILL_HW |
2164 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2165 STATUS_RF_KILL_SW |
2166 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2167 STATUS_GEO_CONFIGURED |
2168 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2169 STATUS_IN_SUSPEND |
2170 test_bit(STATUS_FW_ERROR, &priv->status) <<
2171 STATUS_FW_ERROR |
2172 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2173 STATUS_EXIT_PENDING;
2174
2175 spin_lock_irqsave(&priv->lock, flags);
2176 iwl_clear_bit(priv, CSR_GP_CNTRL,
2177 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2178 spin_unlock_irqrestore(&priv->lock, flags);
2179
2180 iwl_txq_ctx_stop(priv);
2181 iwl_rxq_stop(priv);
2182
2183 spin_lock_irqsave(&priv->lock, flags);
2184 if (!iwl_grab_nic_access(priv)) {
2185 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2186 APMG_CLK_VAL_DMA_CLK_RQT);
2187 iwl_release_nic_access(priv);
2188 }
2189 spin_unlock_irqrestore(&priv->lock, flags);
2190
2191 udelay(5);
2192
2193 /* FIXME: apm_ops.suspend(priv) */
2194 priv->cfg->ops->lib->apm_ops.reset(priv);
2195 priv->cfg->ops->lib->free_shared_mem(priv);
2196
2197 exit:
2198 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2199
2200 if (priv->ibss_beacon)
2201 dev_kfree_skb(priv->ibss_beacon);
2202 priv->ibss_beacon = NULL;
2203
2204 /* clear out any free frames */
2205 iwl_clear_free_frames(priv);
2206 }
2207
2208 static void iwl4965_down(struct iwl_priv *priv)
2209 {
2210 mutex_lock(&priv->mutex);
2211 __iwl4965_down(priv);
2212 mutex_unlock(&priv->mutex);
2213
2214 iwl_cancel_deferred_work(priv);
2215 }
2216
2217 #define MAX_HW_RESTARTS 5
2218
2219 static int __iwl4965_up(struct iwl_priv *priv)
2220 {
2221 int i;
2222 int ret;
2223
2224 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2225 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2226 return -EIO;
2227 }
2228
2229 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2230 IWL_ERROR("ucode not available for device bringup\n");
2231 return -EIO;
2232 }
2233
2234 /* If platform's RF_KILL switch is NOT set to KILL */
2235 if (iwl_read32(priv, CSR_GP_CNTRL) &
2236 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2237 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2238 else
2239 set_bit(STATUS_RF_KILL_HW, &priv->status);
2240
2241 if (!test_bit(STATUS_IN_SUSPEND, &priv->status) &&
2242 iwl_is_rfkill(priv)) {
2243 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2244 test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2245 return -ENODEV;
2246 }
2247
2248 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2249
2250 ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
2251 if (ret) {
2252 IWL_ERROR("Unable to allocate shared memory\n");
2253 return ret;
2254 }
2255
2256 ret = iwl_hw_nic_init(priv);
2257 if (ret) {
2258 IWL_ERROR("Unable to init nic\n");
2259 return ret;
2260 }
2261
2262 /* make sure rfkill handshake bits are cleared */
2263 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2264 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2265 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2266
2267 /* clear (again), then enable host interrupts */
2268 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2269 iwl4965_enable_interrupts(priv);
2270
2271 /* really make sure rfkill handshake bits are cleared */
2272 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2273 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2274
2275 /* Copy original ucode data image from disk into backup cache.
2276 * This will be used to initialize the on-board processor's
2277 * data SRAM for a clean start when the runtime program first loads. */
2278 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2279 priv->ucode_data.len);
2280
2281 /* We return success when we resume from suspend and rf_kill is on. */
2282 if (test_bit(STATUS_RF_KILL_HW, &priv->status) ||
2283 test_bit(STATUS_RF_KILL_SW, &priv->status))
2284 return 0;
2285
2286 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2287
2288 iwl_clear_stations_table(priv);
2289
2290 /* load bootstrap state machine,
2291 * load bootstrap program into processor's memory,
2292 * prepare to load the "initialize" uCode */
2293 ret = priv->cfg->ops->lib->load_ucode(priv);
2294
2295 if (ret) {
2296 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2297 continue;
2298 }
2299
2300 /* Clear out the uCode error bit if it is set */
2301 clear_bit(STATUS_FW_ERROR, &priv->status);
2302
2303 /* start card; "initialize" will load runtime ucode */
2304 iwl4965_nic_start(priv);
2305
2306 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2307
2308 return 0;
2309 }
2310
2311 set_bit(STATUS_EXIT_PENDING, &priv->status);
2312 __iwl4965_down(priv);
2313 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2314
2315 /* tried to restart and config the device for as long as our
2316 * patience could withstand */
2317 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2318 return -EIO;
2319 }
2320
2321
2322 /*****************************************************************************
2323 *
2324 * Workqueue callbacks
2325 *
2326 *****************************************************************************/
2327
2328 static void iwl_bg_init_alive_start(struct work_struct *data)
2329 {
2330 struct iwl_priv *priv =
2331 container_of(data, struct iwl_priv, init_alive_start.work);
2332
2333 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2334 return;
2335
2336 mutex_lock(&priv->mutex);
2337 priv->cfg->ops->lib->init_alive_start(priv);
2338 mutex_unlock(&priv->mutex);
2339 }
2340
2341 static void iwl_bg_alive_start(struct work_struct *data)
2342 {
2343 struct iwl_priv *priv =
2344 container_of(data, struct iwl_priv, alive_start.work);
2345
2346 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2347 return;
2348
2349 mutex_lock(&priv->mutex);
2350 iwl_alive_start(priv);
2351 mutex_unlock(&priv->mutex);
2352 }
2353
2354 static void iwl4965_bg_rf_kill(struct work_struct *work)
2355 {
2356 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2357
2358 wake_up_interruptible(&priv->wait_command_queue);
2359
2360 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2361 return;
2362
2363 mutex_lock(&priv->mutex);
2364
2365 if (!iwl_is_rfkill(priv)) {
2366 IWL_DEBUG(IWL_DL_RF_KILL,
2367 "HW and/or SW RF Kill no longer active, restarting "
2368 "device\n");
2369 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2370 queue_work(priv->workqueue, &priv->restart);
2371 } else {
2372 /* make sure mac80211 stop sending Tx frame */
2373 if (priv->mac80211_registered)
2374 ieee80211_stop_queues(priv->hw);
2375
2376 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2377 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2378 "disabled by SW switch\n");
2379 else
2380 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2381 "Kill switch must be turned off for "
2382 "wireless networking to work.\n");
2383 }
2384 mutex_unlock(&priv->mutex);
2385 iwl_rfkill_set_hw_state(priv);
2386 }
2387
2388 static void iwl4965_bg_set_monitor(struct work_struct *work)
2389 {
2390 struct iwl_priv *priv = container_of(work,
2391 struct iwl_priv, set_monitor);
2392 int ret;
2393
2394 IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
2395
2396 mutex_lock(&priv->mutex);
2397
2398 ret = iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR);
2399
2400 if (ret) {
2401 if (ret == -EAGAIN)
2402 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
2403 else
2404 IWL_ERROR("iwl4965_set_mode() failed ret = %d\n", ret);
2405 }
2406
2407 mutex_unlock(&priv->mutex);
2408 }
2409
2410 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2411 {
2412 struct iwl_priv *priv = container_of(work, struct iwl_priv,
2413 run_time_calib_work);
2414
2415 mutex_lock(&priv->mutex);
2416
2417 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2418 test_bit(STATUS_SCANNING, &priv->status)) {
2419 mutex_unlock(&priv->mutex);
2420 return;
2421 }
2422
2423 if (priv->start_calib) {
2424 iwl_chain_noise_calibration(priv, &priv->statistics);
2425
2426 iwl_sensitivity_calibration(priv, &priv->statistics);
2427 }
2428
2429 mutex_unlock(&priv->mutex);
2430 return;
2431 }
2432
2433 static void iwl4965_bg_up(struct work_struct *data)
2434 {
2435 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2436
2437 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2438 return;
2439
2440 mutex_lock(&priv->mutex);
2441 __iwl4965_up(priv);
2442 mutex_unlock(&priv->mutex);
2443 iwl_rfkill_set_hw_state(priv);
2444 }
2445
2446 static void iwl4965_bg_restart(struct work_struct *data)
2447 {
2448 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2449
2450 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2451 return;
2452
2453 iwl4965_down(priv);
2454 queue_work(priv->workqueue, &priv->up);
2455 }
2456
2457 static void iwl4965_bg_rx_replenish(struct work_struct *data)
2458 {
2459 struct iwl_priv *priv =
2460 container_of(data, struct iwl_priv, rx_replenish);
2461
2462 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2463 return;
2464
2465 mutex_lock(&priv->mutex);
2466 iwl_rx_replenish(priv);
2467 mutex_unlock(&priv->mutex);
2468 }
2469
2470 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2471
2472 static void iwl4965_post_associate(struct iwl_priv *priv)
2473 {
2474 struct ieee80211_conf *conf = NULL;
2475 int ret = 0;
2476 DECLARE_MAC_BUF(mac);
2477 unsigned long flags;
2478
2479 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2480 IWL_ERROR("%s Should not be called in AP mode\n", __func__);
2481 return;
2482 }
2483
2484 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
2485 priv->assoc_id,
2486 print_mac(mac, priv->active_rxon.bssid_addr));
2487
2488
2489 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2490 return;
2491
2492
2493 if (!priv->vif || !priv->is_open)
2494 return;
2495
2496 iwl_scan_cancel_timeout(priv, 200);
2497
2498 conf = ieee80211_get_hw_conf(priv->hw);
2499
2500 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2501 iwl4965_commit_rxon(priv);
2502
2503 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2504 iwl4965_setup_rxon_timing(priv);
2505 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2506 sizeof(priv->rxon_timing), &priv->rxon_timing);
2507 if (ret)
2508 IWL_WARNING("REPLY_RXON_TIMING failed - "
2509 "Attempting to continue.\n");
2510
2511 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2512
2513 if (priv->current_ht_config.is_ht)
2514 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2515
2516 iwl_set_rxon_chain(priv);
2517 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2518
2519 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2520 priv->assoc_id, priv->beacon_int);
2521
2522 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2523 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2524 else
2525 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2526
2527 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2528 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2529 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2530 else
2531 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2532
2533 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2534 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2535
2536 }
2537
2538 iwl4965_commit_rxon(priv);
2539
2540 switch (priv->iw_mode) {
2541 case IEEE80211_IF_TYPE_STA:
2542 break;
2543
2544 case IEEE80211_IF_TYPE_IBSS:
2545
2546 /* assume default assoc id */
2547 priv->assoc_id = 1;
2548
2549 iwl_rxon_add_station(priv, priv->bssid, 0);
2550 iwl4965_send_beacon_cmd(priv);
2551
2552 break;
2553
2554 default:
2555 IWL_ERROR("%s Should not be called in %d mode\n",
2556 __func__, priv->iw_mode);
2557 break;
2558 }
2559
2560 /* Enable Rx differential gain and sensitivity calibrations */
2561 iwl_chain_noise_reset(priv);
2562 priv->start_calib = 1;
2563
2564 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2565 priv->assoc_station_added = 1;
2566
2567 spin_lock_irqsave(&priv->lock, flags);
2568 iwl_activate_qos(priv, 0);
2569 spin_unlock_irqrestore(&priv->lock, flags);
2570
2571 iwl_power_update_mode(priv, 0);
2572 /* we have just associated, don't start scan too early */
2573 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
2574 }
2575
2576 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
2577
2578 static void iwl_bg_scan_completed(struct work_struct *work)
2579 {
2580 struct iwl_priv *priv =
2581 container_of(work, struct iwl_priv, scan_completed);
2582
2583 IWL_DEBUG_SCAN("SCAN complete scan\n");
2584
2585 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2586 return;
2587
2588 if (test_bit(STATUS_CONF_PENDING, &priv->status))
2589 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
2590
2591 ieee80211_scan_completed(priv->hw);
2592
2593 /* Since setting the TXPOWER may have been deferred while
2594 * performing the scan, fire one off */
2595 mutex_lock(&priv->mutex);
2596 iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
2597 mutex_unlock(&priv->mutex);
2598 }
2599
2600 /*****************************************************************************
2601 *
2602 * mac80211 entry point functions
2603 *
2604 *****************************************************************************/
2605
2606 #define UCODE_READY_TIMEOUT (4 * HZ)
2607
2608 static int iwl4965_mac_start(struct ieee80211_hw *hw)
2609 {
2610 struct iwl_priv *priv = hw->priv;
2611 int ret;
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 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
2623 DRV_NAME, priv);
2624 if (ret) {
2625 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2626 goto out_disable_msi;
2627 }
2628
2629 /* we should be verifying the device is ready to be opened */
2630 mutex_lock(&priv->mutex);
2631
2632 memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2633 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2634 * ucode filename and max sizes are card-specific. */
2635
2636 if (!priv->ucode_code.len) {
2637 ret = iwl4965_read_ucode(priv);
2638 if (ret) {
2639 IWL_ERROR("Could not read microcode: %d\n", ret);
2640 mutex_unlock(&priv->mutex);
2641 goto out_release_irq;
2642 }
2643 }
2644
2645 ret = __iwl4965_up(priv);
2646
2647 mutex_unlock(&priv->mutex);
2648
2649 iwl_rfkill_set_hw_state(priv);
2650
2651 if (ret)
2652 goto out_release_irq;
2653
2654 IWL_DEBUG_INFO("Start UP work done.\n");
2655
2656 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2657 return 0;
2658
2659 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2660 * mac80211 will not be run successfully. */
2661 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2662 test_bit(STATUS_READY, &priv->status),
2663 UCODE_READY_TIMEOUT);
2664 if (!ret) {
2665 if (!test_bit(STATUS_READY, &priv->status)) {
2666 IWL_ERROR("START_ALIVE timeout after %dms.\n",
2667 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2668 ret = -ETIMEDOUT;
2669 goto out_release_irq;
2670 }
2671 }
2672
2673 priv->is_open = 1;
2674 IWL_DEBUG_MAC80211("leave\n");
2675 return 0;
2676
2677 out_release_irq:
2678 free_irq(priv->pci_dev->irq, priv);
2679 out_disable_msi:
2680 pci_disable_msi(priv->pci_dev);
2681 pci_disable_device(priv->pci_dev);
2682 priv->is_open = 0;
2683 IWL_DEBUG_MAC80211("leave - failed\n");
2684 return ret;
2685 }
2686
2687 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
2688 {
2689 struct iwl_priv *priv = hw->priv;
2690
2691 IWL_DEBUG_MAC80211("enter\n");
2692
2693 if (!priv->is_open) {
2694 IWL_DEBUG_MAC80211("leave - skip\n");
2695 return;
2696 }
2697
2698 priv->is_open = 0;
2699
2700 if (iwl_is_ready_rf(priv)) {
2701 /* stop mac, cancel any scan request and clear
2702 * RXON_FILTER_ASSOC_MSK BIT
2703 */
2704 mutex_lock(&priv->mutex);
2705 iwl_scan_cancel_timeout(priv, 100);
2706 mutex_unlock(&priv->mutex);
2707 }
2708
2709 iwl4965_down(priv);
2710
2711 flush_workqueue(priv->workqueue);
2712 free_irq(priv->pci_dev->irq, priv);
2713 pci_disable_msi(priv->pci_dev);
2714 pci_save_state(priv->pci_dev);
2715 pci_disable_device(priv->pci_dev);
2716
2717 IWL_DEBUG_MAC80211("leave\n");
2718 }
2719
2720 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2721 {
2722 struct iwl_priv *priv = hw->priv;
2723
2724 IWL_DEBUG_MAC80211("enter\n");
2725
2726 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
2727 IWL_DEBUG_MAC80211("leave - monitor\n");
2728 dev_kfree_skb_any(skb);
2729 return 0;
2730 }
2731
2732 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2733 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2734
2735 if (iwl_tx_skb(priv, skb))
2736 dev_kfree_skb_any(skb);
2737
2738 IWL_DEBUG_MAC80211("leave\n");
2739 return 0;
2740 }
2741
2742 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
2743 struct ieee80211_if_init_conf *conf)
2744 {
2745 struct iwl_priv *priv = hw->priv;
2746 unsigned long flags;
2747 DECLARE_MAC_BUF(mac);
2748
2749 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2750
2751 if (priv->vif) {
2752 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2753 return -EOPNOTSUPP;
2754 }
2755
2756 spin_lock_irqsave(&priv->lock, flags);
2757 priv->vif = conf->vif;
2758
2759 spin_unlock_irqrestore(&priv->lock, flags);
2760
2761 mutex_lock(&priv->mutex);
2762
2763 if (conf->mac_addr) {
2764 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
2765 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2766 }
2767
2768 if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
2769 /* we are not ready, will run again when ready */
2770 set_bit(STATUS_MODE_PENDING, &priv->status);
2771
2772 mutex_unlock(&priv->mutex);
2773
2774 IWL_DEBUG_MAC80211("leave\n");
2775 return 0;
2776 }
2777
2778 /**
2779 * iwl4965_mac_config - mac80211 config callback
2780 *
2781 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2782 * be set inappropriately and the driver currently sets the hardware up to
2783 * use it whenever needed.
2784 */
2785 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
2786 {
2787 struct iwl_priv *priv = hw->priv;
2788 const struct iwl_channel_info *ch_info;
2789 unsigned long flags;
2790 int ret = 0;
2791 u16 channel;
2792
2793 mutex_lock(&priv->mutex);
2794 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2795
2796 priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
2797
2798 if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2799 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2800 goto out;
2801 }
2802
2803 if (!conf->radio_enabled)
2804 iwl_radio_kill_sw_disable_radio(priv);
2805
2806 if (!iwl_is_ready(priv)) {
2807 IWL_DEBUG_MAC80211("leave - not ready\n");
2808 ret = -EIO;
2809 goto out;
2810 }
2811
2812 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2813 test_bit(STATUS_SCANNING, &priv->status))) {
2814 IWL_DEBUG_MAC80211("leave - scanning\n");
2815 set_bit(STATUS_CONF_PENDING, &priv->status);
2816 mutex_unlock(&priv->mutex);
2817 return 0;
2818 }
2819
2820 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2821 ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2822 if (!is_channel_valid(ch_info)) {
2823 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2824 ret = -EINVAL;
2825 goto out;
2826 }
2827
2828 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
2829 !is_channel_ibss(ch_info)) {
2830 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2831 conf->channel->hw_value, conf->channel->band);
2832 ret = -EINVAL;
2833 goto out;
2834 }
2835
2836 spin_lock_irqsave(&priv->lock, flags);
2837
2838
2839 /* if we are switching from ht to 2.4 clear flags
2840 * from any ht related info since 2.4 does not
2841 * support ht */
2842 if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2843 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2844 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2845 #endif
2846 )
2847 priv->staging_rxon.flags = 0;
2848
2849 iwl_set_rxon_channel(priv, conf->channel->band, channel);
2850
2851 iwl_set_flags_for_band(priv, conf->channel->band);
2852
2853 /* The list of supported rates and rate mask can be different
2854 * for each band; since the band may have changed, reset
2855 * the rate mask to what mac80211 lists */
2856 iwl4965_set_rate(priv);
2857
2858 spin_unlock_irqrestore(&priv->lock, flags);
2859
2860 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2861 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2862 iwl4965_hw_channel_switch(priv, conf->channel);
2863 goto out;
2864 }
2865 #endif
2866
2867 if (!conf->radio_enabled) {
2868 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2869 goto out;
2870 }
2871
2872 if (iwl_is_rfkill(priv)) {
2873 IWL_DEBUG_MAC80211("leave - RF kill\n");
2874 ret = -EIO;
2875 goto out;
2876 }
2877
2878 IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2879 priv->tx_power_user_lmt, conf->power_level);
2880
2881 iwl_set_tx_power(priv, conf->power_level, false);
2882
2883 iwl4965_set_rate(priv);
2884
2885 if (memcmp(&priv->active_rxon,
2886 &priv->staging_rxon, sizeof(priv->staging_rxon)))
2887 iwl4965_commit_rxon(priv);
2888 else
2889 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2890
2891 IWL_DEBUG_MAC80211("leave\n");
2892
2893 out:
2894 clear_bit(STATUS_CONF_PENDING, &priv->status);
2895 mutex_unlock(&priv->mutex);
2896 return ret;
2897 }
2898
2899 static void iwl4965_config_ap(struct iwl_priv *priv)
2900 {
2901 int ret = 0;
2902 unsigned long flags;
2903
2904 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2905 return;
2906
2907 /* The following should be done only at AP bring up */
2908 if (!(iwl_is_associated(priv))) {
2909
2910 /* RXON - unassoc (to set timing command) */
2911 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2912 iwl4965_commit_rxon(priv);
2913
2914 /* RXON Timing */
2915 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2916 iwl4965_setup_rxon_timing(priv);
2917 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2918 sizeof(priv->rxon_timing), &priv->rxon_timing);
2919 if (ret)
2920 IWL_WARNING("REPLY_RXON_TIMING failed - "
2921 "Attempting to continue.\n");
2922
2923 iwl_set_rxon_chain(priv);
2924
2925 /* FIXME: what should be the assoc_id for AP? */
2926 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2927 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2928 priv->staging_rxon.flags |=
2929 RXON_FLG_SHORT_PREAMBLE_MSK;
2930 else
2931 priv->staging_rxon.flags &=
2932 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2933
2934 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2935 if (priv->assoc_capability &
2936 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2937 priv->staging_rxon.flags |=
2938 RXON_FLG_SHORT_SLOT_MSK;
2939 else
2940 priv->staging_rxon.flags &=
2941 ~RXON_FLG_SHORT_SLOT_MSK;
2942
2943 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2944 priv->staging_rxon.flags &=
2945 ~RXON_FLG_SHORT_SLOT_MSK;
2946 }
2947 /* restore RXON assoc */
2948 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2949 iwl4965_commit_rxon(priv);
2950 spin_lock_irqsave(&priv->lock, flags);
2951 iwl_activate_qos(priv, 1);
2952 spin_unlock_irqrestore(&priv->lock, flags);
2953 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2954 }
2955 iwl4965_send_beacon_cmd(priv);
2956
2957 /* FIXME - we need to add code here to detect a totally new
2958 * configuration, reset the AP, unassoc, rxon timing, assoc,
2959 * clear sta table, add BCAST sta... */
2960 }
2961
2962 /* temporary */
2963 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb);
2964
2965 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
2966 struct ieee80211_vif *vif,
2967 struct ieee80211_if_conf *conf)
2968 {
2969 struct iwl_priv *priv = hw->priv;
2970 DECLARE_MAC_BUF(mac);
2971 unsigned long flags;
2972 int rc;
2973
2974 if (conf == NULL)
2975 return -EIO;
2976
2977 if (priv->vif != vif) {
2978 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2979 return 0;
2980 }
2981
2982 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
2983 conf->changed & IEEE80211_IFCC_BEACON) {
2984 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2985 if (!beacon)
2986 return -ENOMEM;
2987 rc = iwl4965_mac_beacon_update(hw, beacon);
2988 if (rc)
2989 return rc;
2990 }
2991
2992 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
2993 (!conf->ssid_len)) {
2994 IWL_DEBUG_MAC80211
2995 ("Leaving in AP mode because HostAPD is not ready.\n");
2996 return 0;
2997 }
2998
2999 if (!iwl_is_alive(priv))
3000 return -EAGAIN;
3001
3002 mutex_lock(&priv->mutex);
3003
3004 if (conf->bssid)
3005 IWL_DEBUG_MAC80211("bssid: %s\n",
3006 print_mac(mac, conf->bssid));
3007
3008 /*
3009 * very dubious code was here; the probe filtering flag is never set:
3010 *
3011 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
3012 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
3013 */
3014
3015 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
3016 if (!conf->bssid) {
3017 conf->bssid = priv->mac_addr;
3018 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
3019 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
3020 print_mac(mac, conf->bssid));
3021 }
3022 if (priv->ibss_beacon)
3023 dev_kfree_skb(priv->ibss_beacon);
3024
3025 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
3026 }
3027
3028 if (iwl_is_rfkill(priv))
3029 goto done;
3030
3031 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
3032 !is_multicast_ether_addr(conf->bssid)) {
3033 /* If there is currently a HW scan going on in the background
3034 * then we need to cancel it else the RXON below will fail. */
3035 if (iwl_scan_cancel_timeout(priv, 100)) {
3036 IWL_WARNING("Aborted scan still in progress "
3037 "after 100ms\n");
3038 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
3039 mutex_unlock(&priv->mutex);
3040 return -EAGAIN;
3041 }
3042 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
3043
3044 /* TODO: Audit driver for usage of these members and see
3045 * if mac80211 deprecates them (priv->bssid looks like it
3046 * shouldn't be there, but I haven't scanned the IBSS code
3047 * to verify) - jpk */
3048 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
3049
3050 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3051 iwl4965_config_ap(priv);
3052 else {
3053 rc = iwl4965_commit_rxon(priv);
3054 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
3055 iwl_rxon_add_station(
3056 priv, priv->active_rxon.bssid_addr, 1);
3057 }
3058
3059 } else {
3060 iwl_scan_cancel_timeout(priv, 100);
3061 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3062 iwl4965_commit_rxon(priv);
3063 }
3064
3065 done:
3066 spin_lock_irqsave(&priv->lock, flags);
3067 if (!conf->ssid_len)
3068 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3069 else
3070 memcpy(priv->essid, conf->ssid, conf->ssid_len);
3071
3072 priv->essid_len = conf->ssid_len;
3073 spin_unlock_irqrestore(&priv->lock, flags);
3074
3075 IWL_DEBUG_MAC80211("leave\n");
3076 mutex_unlock(&priv->mutex);
3077
3078 return 0;
3079 }
3080
3081 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
3082 unsigned int changed_flags,
3083 unsigned int *total_flags,
3084 int mc_count, struct dev_addr_list *mc_list)
3085 {
3086 struct iwl_priv *priv = hw->priv;
3087
3088 if (changed_flags & (*total_flags) & FIF_OTHER_BSS) {
3089 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
3090 IEEE80211_IF_TYPE_MNTR,
3091 changed_flags, *total_flags);
3092 /* queue work 'cuz mac80211 is holding a lock which
3093 * prevents us from issuing (synchronous) f/w cmds */
3094 queue_work(priv->workqueue, &priv->set_monitor);
3095 }
3096 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI |
3097 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3098 }
3099
3100 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
3101 struct ieee80211_if_init_conf *conf)
3102 {
3103 struct iwl_priv *priv = hw->priv;
3104
3105 IWL_DEBUG_MAC80211("enter\n");
3106
3107 mutex_lock(&priv->mutex);
3108
3109 if (iwl_is_ready_rf(priv)) {
3110 iwl_scan_cancel_timeout(priv, 100);
3111 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3112 iwl4965_commit_rxon(priv);
3113 }
3114 if (priv->vif == conf->vif) {
3115 priv->vif = NULL;
3116 memset(priv->bssid, 0, ETH_ALEN);
3117 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3118 priv->essid_len = 0;
3119 }
3120 mutex_unlock(&priv->mutex);
3121
3122 IWL_DEBUG_MAC80211("leave\n");
3123
3124 }
3125
3126 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3127 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
3128 struct ieee80211_vif *vif,
3129 struct ieee80211_bss_conf *bss_conf,
3130 u32 changes)
3131 {
3132 struct iwl_priv *priv = hw->priv;
3133
3134 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
3135
3136 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3137 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
3138 bss_conf->use_short_preamble);
3139 if (bss_conf->use_short_preamble)
3140 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3141 else
3142 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3143 }
3144
3145 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3146 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3147 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3148 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3149 else
3150 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3151 }
3152
3153 if (changes & BSS_CHANGED_HT) {
3154 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
3155 iwl4965_ht_conf(priv, bss_conf);
3156 iwl_set_rxon_chain(priv);
3157 }
3158
3159 if (changes & BSS_CHANGED_ASSOC) {
3160 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3161 /* This should never happen as this function should
3162 * never be called from interrupt context. */
3163 if (WARN_ON_ONCE(in_interrupt()))
3164 return;
3165 if (bss_conf->assoc) {
3166 priv->assoc_id = bss_conf->aid;
3167 priv->beacon_int = bss_conf->beacon_int;
3168 priv->power_data.dtim_period = bss_conf->dtim_period;
3169 priv->timestamp = bss_conf->timestamp;
3170 priv->assoc_capability = bss_conf->assoc_capability;
3171 priv->next_scan_jiffies = jiffies +
3172 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3173 mutex_lock(&priv->mutex);
3174 iwl4965_post_associate(priv);
3175 mutex_unlock(&priv->mutex);
3176 } else {
3177 priv->assoc_id = 0;
3178 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3179 }
3180 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3181 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3182 iwl_send_rxon_assoc(priv);
3183 }
3184
3185 }
3186
3187 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
3188 {
3189 int rc = 0;
3190 unsigned long flags;
3191 struct iwl_priv *priv = hw->priv;
3192
3193 IWL_DEBUG_MAC80211("enter\n");
3194
3195 mutex_lock(&priv->mutex);
3196 spin_lock_irqsave(&priv->lock, flags);
3197
3198 if (!iwl_is_ready_rf(priv)) {
3199 rc = -EIO;
3200 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3201 goto out_unlock;
3202 }
3203
3204 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
3205 rc = -EIO;
3206 IWL_ERROR("ERROR: APs don't scan\n");
3207 goto out_unlock;
3208 }
3209
3210 /* we don't schedule scan within next_scan_jiffies period */
3211 if (priv->next_scan_jiffies &&
3212 time_after(priv->next_scan_jiffies, jiffies)) {
3213 rc = -EAGAIN;
3214 goto out_unlock;
3215 }
3216 /* if we just finished scan ask for delay */
3217 if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
3218 IWL_DELAY_NEXT_SCAN, jiffies)) {
3219 rc = -EAGAIN;
3220 goto out_unlock;
3221 }
3222 if (len) {
3223 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
3224 iwl_escape_essid(ssid, len), (int)len);
3225
3226 priv->one_direct_scan = 1;
3227 priv->direct_ssid_len = (u8)
3228 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
3229 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3230 } else
3231 priv->one_direct_scan = 0;
3232
3233 rc = iwl_scan_initiate(priv);
3234
3235 IWL_DEBUG_MAC80211("leave\n");
3236
3237 out_unlock:
3238 spin_unlock_irqrestore(&priv->lock, flags);
3239 mutex_unlock(&priv->mutex);
3240
3241 return rc;
3242 }
3243
3244 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
3245 struct ieee80211_key_conf *keyconf, const u8 *addr,
3246 u32 iv32, u16 *phase1key)
3247 {
3248 struct iwl_priv *priv = hw->priv;
3249 u8 sta_id = IWL_INVALID_STATION;
3250 unsigned long flags;
3251 __le16 key_flags = 0;
3252 int i;
3253 DECLARE_MAC_BUF(mac);
3254
3255 IWL_DEBUG_MAC80211("enter\n");
3256
3257 sta_id = iwl_find_station(priv, addr);
3258 if (sta_id == IWL_INVALID_STATION) {
3259 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3260 print_mac(mac, addr));
3261 return;
3262 }
3263
3264 iwl_scan_cancel_timeout(priv, 100);
3265
3266 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
3267 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
3268 key_flags &= ~STA_KEY_FLG_INVALID;
3269
3270 if (sta_id == priv->hw_params.bcast_sta_id)
3271 key_flags |= STA_KEY_MULTICAST_MSK;
3272
3273 spin_lock_irqsave(&priv->sta_lock, flags);
3274
3275 priv->stations[sta_id].sta.key.key_flags = key_flags;
3276 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
3277
3278 for (i = 0; i < 5; i++)
3279 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
3280 cpu_to_le16(phase1key[i]);
3281
3282 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
3283 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3284
3285 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3286
3287 spin_unlock_irqrestore(&priv->sta_lock, flags);
3288
3289 IWL_DEBUG_MAC80211("leave\n");
3290 }
3291
3292 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3293 const u8 *local_addr, const u8 *addr,
3294 struct ieee80211_key_conf *key)
3295 {
3296 struct iwl_priv *priv = hw->priv;
3297 DECLARE_MAC_BUF(mac);
3298 int ret = 0;
3299 u8 sta_id = IWL_INVALID_STATION;
3300 u8 is_default_wep_key = 0;
3301
3302 IWL_DEBUG_MAC80211("enter\n");
3303
3304 if (priv->hw_params.sw_crypto) {
3305 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3306 return -EOPNOTSUPP;
3307 }
3308
3309 if (is_zero_ether_addr(addr))
3310 /* only support pairwise keys */
3311 return -EOPNOTSUPP;
3312
3313 sta_id = iwl_find_station(priv, addr);
3314 if (sta_id == IWL_INVALID_STATION) {
3315 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3316 print_mac(mac, addr));
3317 return -EINVAL;
3318
3319 }
3320
3321 mutex_lock(&priv->mutex);
3322 iwl_scan_cancel_timeout(priv, 100);
3323 mutex_unlock(&priv->mutex);
3324
3325 /* If we are getting WEP group key and we didn't receive any key mapping
3326 * so far, we are in legacy wep mode (group key only), otherwise we are
3327 * in 1X mode.
3328 * In legacy wep mode, we use another host command to the uCode */
3329 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3330 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3331 if (cmd == SET_KEY)
3332 is_default_wep_key = !priv->key_mapping_key;
3333 else
3334 is_default_wep_key =
3335 (key->hw_key_idx == HW_KEY_DEFAULT);
3336 }
3337
3338 switch (cmd) {
3339 case SET_KEY:
3340 if (is_default_wep_key)
3341 ret = iwl_set_default_wep_key(priv, key);
3342 else
3343 ret = iwl_set_dynamic_key(priv, key, sta_id);
3344
3345 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3346 break;
3347 case DISABLE_KEY:
3348 if (is_default_wep_key)
3349 ret = iwl_remove_default_wep_key(priv, key);
3350 else
3351 ret = iwl_remove_dynamic_key(priv, key, sta_id);
3352
3353 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3354 break;
3355 default:
3356 ret = -EINVAL;
3357 }
3358
3359 IWL_DEBUG_MAC80211("leave\n");
3360
3361 return ret;
3362 }
3363
3364 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3365 const struct ieee80211_tx_queue_params *params)
3366 {
3367 struct iwl_priv *priv = hw->priv;
3368 unsigned long flags;
3369 int q;
3370
3371 IWL_DEBUG_MAC80211("enter\n");
3372
3373 if (!iwl_is_ready_rf(priv)) {
3374 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3375 return -EIO;
3376 }
3377
3378 if (queue >= AC_NUM) {
3379 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3380 return 0;
3381 }
3382
3383 if (!priv->qos_data.qos_enable) {
3384 priv->qos_data.qos_active = 0;
3385 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3386 return 0;
3387 }
3388 q = AC_NUM - 1 - queue;
3389
3390 spin_lock_irqsave(&priv->lock, flags);
3391
3392 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3393 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3394 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3395 priv->qos_data.def_qos_parm.ac[q].edca_txop =
3396 cpu_to_le16((params->txop * 32));
3397
3398 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3399 priv->qos_data.qos_active = 1;
3400
3401 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3402 iwl_activate_qos(priv, 1);
3403 else if (priv->assoc_id && iwl_is_associated(priv))
3404 iwl_activate_qos(priv, 0);
3405
3406 spin_unlock_irqrestore(&priv->lock, flags);
3407
3408 IWL_DEBUG_MAC80211("leave\n");
3409 return 0;
3410 }
3411
3412 static int iwl4965_mac_ampdu_action(struct ieee80211_hw *hw,
3413 enum ieee80211_ampdu_mlme_action action,
3414 const u8 *addr, u16 tid, u16 *ssn)
3415 {
3416 struct iwl_priv *priv = hw->priv;
3417 DECLARE_MAC_BUF(mac);
3418
3419 IWL_DEBUG_HT("A-MPDU action on addr %s tid %d\n",
3420 print_mac(mac, addr), tid);
3421
3422 if (!(priv->cfg->sku & IWL_SKU_N))
3423 return -EACCES;
3424
3425 switch (action) {
3426 case IEEE80211_AMPDU_RX_START:
3427 IWL_DEBUG_HT("start Rx\n");
3428 return iwl_rx_agg_start(priv, addr, tid, *ssn);
3429 case IEEE80211_AMPDU_RX_STOP:
3430 IWL_DEBUG_HT("stop Rx\n");
3431 return iwl_rx_agg_stop(priv, addr, tid);
3432 case IEEE80211_AMPDU_TX_START:
3433 IWL_DEBUG_HT("start Tx\n");
3434 return iwl_tx_agg_start(priv, addr, tid, ssn);
3435 case IEEE80211_AMPDU_TX_STOP:
3436 IWL_DEBUG_HT("stop Tx\n");
3437 return iwl_tx_agg_stop(priv, addr, tid);
3438 default:
3439 IWL_DEBUG_HT("unknown\n");
3440 return -EINVAL;
3441 break;
3442 }
3443 return 0;
3444 }
3445 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
3446 struct ieee80211_tx_queue_stats *stats)
3447 {
3448 struct iwl_priv *priv = hw->priv;
3449 int i, avail;
3450 struct iwl_tx_queue *txq;
3451 struct iwl_queue *q;
3452 unsigned long flags;
3453
3454 IWL_DEBUG_MAC80211("enter\n");
3455
3456 if (!iwl_is_ready_rf(priv)) {
3457 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3458 return -EIO;
3459 }
3460
3461 spin_lock_irqsave(&priv->lock, flags);
3462
3463 for (i = 0; i < AC_NUM; i++) {
3464 txq = &priv->txq[i];
3465 q = &txq->q;
3466 avail = iwl_queue_space(q);
3467
3468 stats[i].len = q->n_window - avail;
3469 stats[i].limit = q->n_window - q->high_mark;
3470 stats[i].count = q->n_window;
3471
3472 }
3473 spin_unlock_irqrestore(&priv->lock, flags);
3474
3475 IWL_DEBUG_MAC80211("leave\n");
3476
3477 return 0;
3478 }
3479
3480 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
3481 struct ieee80211_low_level_stats *stats)
3482 {
3483 struct iwl_priv *priv = hw->priv;
3484
3485 priv = hw->priv;
3486 IWL_DEBUG_MAC80211("enter\n");
3487 IWL_DEBUG_MAC80211("leave\n");
3488
3489 return 0;
3490 }
3491
3492 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
3493 {
3494 struct iwl_priv *priv = hw->priv;
3495 unsigned long flags;
3496
3497 mutex_lock(&priv->mutex);
3498 IWL_DEBUG_MAC80211("enter\n");
3499
3500 spin_lock_irqsave(&priv->lock, flags);
3501 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3502 spin_unlock_irqrestore(&priv->lock, flags);
3503
3504 iwl_reset_qos(priv);
3505
3506 spin_lock_irqsave(&priv->lock, flags);
3507 priv->assoc_id = 0;
3508 priv->assoc_capability = 0;
3509 priv->assoc_station_added = 0;
3510
3511 /* new association get rid of ibss beacon skb */
3512 if (priv->ibss_beacon)
3513 dev_kfree_skb(priv->ibss_beacon);
3514
3515 priv->ibss_beacon = NULL;
3516
3517 priv->beacon_int = priv->hw->conf.beacon_int;
3518 priv->timestamp = 0;
3519 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
3520 priv->beacon_int = 0;
3521
3522 spin_unlock_irqrestore(&priv->lock, flags);
3523
3524 if (!iwl_is_ready_rf(priv)) {
3525 IWL_DEBUG_MAC80211("leave - not ready\n");
3526 mutex_unlock(&priv->mutex);
3527 return;
3528 }
3529
3530 /* we are restarting association process
3531 * clear RXON_FILTER_ASSOC_MSK bit
3532 */
3533 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3534 iwl_scan_cancel_timeout(priv, 100);
3535 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3536 iwl4965_commit_rxon(priv);
3537 }
3538
3539 iwl_power_update_mode(priv, 0);
3540
3541 /* Per mac80211.h: This is only used in IBSS mode... */
3542 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3543
3544 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3545 mutex_unlock(&priv->mutex);
3546 return;
3547 }
3548
3549 iwl4965_set_rate(priv);
3550
3551 mutex_unlock(&priv->mutex);
3552
3553 IWL_DEBUG_MAC80211("leave\n");
3554 }
3555
3556 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3557 {
3558 struct iwl_priv *priv = hw->priv;
3559 unsigned long flags;
3560 __le64 timestamp;
3561
3562 mutex_lock(&priv->mutex);
3563 IWL_DEBUG_MAC80211("enter\n");
3564
3565 if (!iwl_is_ready_rf(priv)) {
3566 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3567 mutex_unlock(&priv->mutex);
3568 return -EIO;
3569 }
3570
3571 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3572 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3573 mutex_unlock(&priv->mutex);
3574 return -EIO;
3575 }
3576
3577 spin_lock_irqsave(&priv->lock, flags);
3578
3579 if (priv->ibss_beacon)
3580 dev_kfree_skb(priv->ibss_beacon);
3581
3582 priv->ibss_beacon = skb;
3583
3584 priv->assoc_id = 0;
3585 timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3586 priv->timestamp = le64_to_cpu(timestamp) + (priv->beacon_int * 1000);
3587
3588 IWL_DEBUG_MAC80211("leave\n");
3589 spin_unlock_irqrestore(&priv->lock, flags);
3590
3591 iwl_reset_qos(priv);
3592
3593 iwl4965_post_associate(priv);
3594
3595 mutex_unlock(&priv->mutex);
3596
3597 return 0;
3598 }
3599
3600 /*****************************************************************************
3601 *
3602 * sysfs attributes
3603 *
3604 *****************************************************************************/
3605
3606 #ifdef CONFIG_IWLWIFI_DEBUG
3607
3608 /*
3609 * The following adds a new attribute to the sysfs representation
3610 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3611 * used for controlling the debug level.
3612 *
3613 * See the level definitions in iwl for details.
3614 */
3615
3616 static ssize_t show_debug_level(struct device *d,
3617 struct device_attribute *attr, char *buf)
3618 {
3619 struct iwl_priv *priv = d->driver_data;
3620
3621 return sprintf(buf, "0x%08X\n", priv->debug_level);
3622 }
3623 static ssize_t store_debug_level(struct device *d,
3624 struct device_attribute *attr,
3625 const char *buf, size_t count)
3626 {
3627 struct iwl_priv *priv = d->driver_data;
3628 char *p = (char *)buf;
3629 u32 val;
3630
3631 val = simple_strtoul(p, &p, 0);
3632 if (p == buf)
3633 printk(KERN_INFO DRV_NAME
3634 ": %s is not in hex or decimal form.\n", buf);
3635 else
3636 priv->debug_level = val;
3637
3638 return strnlen(buf, count);
3639 }
3640
3641 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3642 show_debug_level, store_debug_level);
3643
3644
3645 #endif /* CONFIG_IWLWIFI_DEBUG */
3646
3647
3648 static ssize_t show_version(struct device *d,
3649 struct device_attribute *attr, char *buf)
3650 {
3651 struct iwl_priv *priv = d->driver_data;
3652 struct iwl_alive_resp *palive = &priv->card_alive;
3653 ssize_t pos = 0;
3654 u16 eeprom_ver;
3655
3656 if (palive->is_valid)
3657 pos += sprintf(buf + pos,
3658 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3659 "fw type: 0x%01X 0x%01X\n",
3660 palive->ucode_major, palive->ucode_minor,
3661 palive->sw_rev[0], palive->sw_rev[1],
3662 palive->ver_type, palive->ver_subtype);
3663 else
3664 pos += sprintf(buf + pos, "fw not loaded\n");
3665
3666 if (priv->eeprom) {
3667 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3668 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3669 eeprom_ver);
3670 } else {
3671 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3672 }
3673
3674 return pos;
3675 }
3676
3677 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3678
3679 static ssize_t show_temperature(struct device *d,
3680 struct device_attribute *attr, char *buf)
3681 {
3682 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3683
3684 if (!iwl_is_alive(priv))
3685 return -EAGAIN;
3686
3687 return sprintf(buf, "%d\n", priv->temperature);
3688 }
3689
3690 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3691
3692 static ssize_t show_tx_power(struct device *d,
3693 struct device_attribute *attr, char *buf)
3694 {
3695 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3696 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3697 }
3698
3699 static ssize_t store_tx_power(struct device *d,
3700 struct device_attribute *attr,
3701 const char *buf, size_t count)
3702 {
3703 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3704 char *p = (char *)buf;
3705 u32 val;
3706
3707 val = simple_strtoul(p, &p, 10);
3708 if (p == buf)
3709 printk(KERN_INFO DRV_NAME
3710 ": %s is not in decimal form.\n", buf);
3711 else
3712 iwl_set_tx_power(priv, val, false);
3713
3714 return count;
3715 }
3716
3717 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3718
3719 static ssize_t show_flags(struct device *d,
3720 struct device_attribute *attr, char *buf)
3721 {
3722 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3723
3724 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3725 }
3726
3727 static ssize_t store_flags(struct device *d,
3728 struct device_attribute *attr,
3729 const char *buf, size_t count)
3730 {
3731 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3732 u32 flags = simple_strtoul(buf, NULL, 0);
3733
3734 mutex_lock(&priv->mutex);
3735 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3736 /* Cancel any currently running scans... */
3737 if (iwl_scan_cancel_timeout(priv, 100))
3738 IWL_WARNING("Could not cancel scan.\n");
3739 else {
3740 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
3741 flags);
3742 priv->staging_rxon.flags = cpu_to_le32(flags);
3743 iwl4965_commit_rxon(priv);
3744 }
3745 }
3746 mutex_unlock(&priv->mutex);
3747
3748 return count;
3749 }
3750
3751 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3752
3753 static ssize_t show_filter_flags(struct device *d,
3754 struct device_attribute *attr, char *buf)
3755 {
3756 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3757
3758 return sprintf(buf, "0x%04X\n",
3759 le32_to_cpu(priv->active_rxon.filter_flags));
3760 }
3761
3762 static ssize_t store_filter_flags(struct device *d,
3763 struct device_attribute *attr,
3764 const char *buf, size_t count)
3765 {
3766 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3767 u32 filter_flags = simple_strtoul(buf, NULL, 0);
3768
3769 mutex_lock(&priv->mutex);
3770 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3771 /* Cancel any currently running scans... */
3772 if (iwl_scan_cancel_timeout(priv, 100))
3773 IWL_WARNING("Could not cancel scan.\n");
3774 else {
3775 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3776 "0x%04X\n", filter_flags);
3777 priv->staging_rxon.filter_flags =
3778 cpu_to_le32(filter_flags);
3779 iwl4965_commit_rxon(priv);
3780 }
3781 }
3782 mutex_unlock(&priv->mutex);
3783
3784 return count;
3785 }
3786
3787 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3788 store_filter_flags);
3789
3790 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
3791
3792 static ssize_t show_measurement(struct device *d,
3793 struct device_attribute *attr, char *buf)
3794 {
3795 struct iwl_priv *priv = dev_get_drvdata(d);
3796 struct iwl4965_spectrum_notification measure_report;
3797 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3798 u8 *data = (u8 *)&measure_report;
3799 unsigned long flags;
3800
3801 spin_lock_irqsave(&priv->lock, flags);
3802 if (!(priv->measurement_status & MEASUREMENT_READY)) {
3803 spin_unlock_irqrestore(&priv->lock, flags);
3804 return 0;
3805 }
3806 memcpy(&measure_report, &priv->measure_report, size);
3807 priv->measurement_status = 0;
3808 spin_unlock_irqrestore(&priv->lock, flags);
3809
3810 while (size && (PAGE_SIZE - len)) {
3811 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3812 PAGE_SIZE - len, 1);
3813 len = strlen(buf);
3814 if (PAGE_SIZE - len)
3815 buf[len++] = '\n';
3816
3817 ofs += 16;
3818 size -= min(size, 16U);
3819 }
3820
3821 return len;
3822 }
3823
3824 static ssize_t store_measurement(struct device *d,
3825 struct device_attribute *attr,
3826 const char *buf, size_t count)
3827 {
3828 struct iwl_priv *priv = dev_get_drvdata(d);
3829 struct ieee80211_measurement_params params = {
3830 .channel = le16_to_cpu(priv->active_rxon.channel),
3831 .start_time = cpu_to_le64(priv->last_tsf),
3832 .duration = cpu_to_le16(1),
3833 };
3834 u8 type = IWL_MEASURE_BASIC;
3835 u8 buffer[32];
3836 u8 channel;
3837
3838 if (count) {
3839 char *p = buffer;
3840 strncpy(buffer, buf, min(sizeof(buffer), count));
3841 channel = simple_strtoul(p, NULL, 0);
3842 if (channel)
3843 params.channel = channel;
3844
3845 p = buffer;
3846 while (*p && *p != ' ')
3847 p++;
3848 if (*p)
3849 type = simple_strtoul(p + 1, NULL, 0);
3850 }
3851
3852 IWL_DEBUG_INFO("Invoking measurement of type %d on "
3853 "channel %d (for '%s')\n", type, params.channel, buf);
3854 iwl4965_get_measurement(priv, &params, type);
3855
3856 return count;
3857 }
3858
3859 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3860 show_measurement, store_measurement);
3861 #endif /* CONFIG_IWLAGN_SPECTRUM_MEASUREMENT */
3862
3863 static ssize_t store_retry_rate(struct device *d,
3864 struct device_attribute *attr,
3865 const char *buf, size_t count)
3866 {
3867 struct iwl_priv *priv = dev_get_drvdata(d);
3868
3869 priv->retry_rate = simple_strtoul(buf, NULL, 0);
3870 if (priv->retry_rate <= 0)
3871 priv->retry_rate = 1;
3872
3873 return count;
3874 }
3875
3876 static ssize_t show_retry_rate(struct device *d,
3877 struct device_attribute *attr, char *buf)
3878 {
3879 struct iwl_priv *priv = dev_get_drvdata(d);
3880 return sprintf(buf, "%d", priv->retry_rate);
3881 }
3882
3883 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3884 store_retry_rate);
3885
3886 static ssize_t store_power_level(struct device *d,
3887 struct device_attribute *attr,
3888 const char *buf, size_t count)
3889 {
3890 struct iwl_priv *priv = dev_get_drvdata(d);
3891 int ret;
3892 int mode;
3893
3894 mode = simple_strtoul(buf, NULL, 0);
3895 mutex_lock(&priv->mutex);
3896
3897 if (!iwl_is_ready(priv)) {
3898 ret = -EAGAIN;
3899 goto out;
3900 }
3901
3902 ret = iwl_power_set_user_mode(priv, mode);
3903 if (ret) {
3904 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3905 goto out;
3906 }
3907 ret = count;
3908
3909 out:
3910 mutex_unlock(&priv->mutex);
3911 return ret;
3912 }
3913
3914 static ssize_t show_power_level(struct device *d,
3915 struct device_attribute *attr, char *buf)
3916 {
3917 struct iwl_priv *priv = dev_get_drvdata(d);
3918 int mode = priv->power_data.user_power_setting;
3919 int system = priv->power_data.system_power_setting;
3920 int level = priv->power_data.power_mode;
3921 char *p = buf;
3922
3923 switch (system) {
3924 case IWL_POWER_SYS_AUTO:
3925 p += sprintf(p, "SYSTEM:auto");
3926 break;
3927 case IWL_POWER_SYS_AC:
3928 p += sprintf(p, "SYSTEM:ac");
3929 break;
3930 case IWL_POWER_SYS_BATTERY:
3931 p += sprintf(p, "SYSTEM:battery");
3932 break;
3933 }
3934
3935 p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO)?"fixed":"auto");
3936 p += sprintf(p, "\tINDEX:%d", level);
3937 p += sprintf(p, "\n");
3938 return p - buf + 1;
3939 }
3940
3941 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3942 store_power_level);
3943
3944 static ssize_t show_channels(struct device *d,
3945 struct device_attribute *attr, char *buf)
3946 {
3947
3948 struct iwl_priv *priv = dev_get_drvdata(d);
3949 struct ieee80211_channel *channels = NULL;
3950 const struct ieee80211_supported_band *supp_band = NULL;
3951 int len = 0, i;
3952 int count = 0;
3953
3954 if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3955 return -EAGAIN;
3956
3957 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3958 channels = supp_band->channels;
3959 count = supp_band->n_channels;
3960
3961 len += sprintf(&buf[len],
3962 "Displaying %d channels in 2.4GHz band "
3963 "(802.11bg):\n", count);
3964
3965 for (i = 0; i < count; i++)
3966 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3967 ieee80211_frequency_to_channel(
3968 channels[i].center_freq),
3969 channels[i].max_power,
3970 channels[i].flags & IEEE80211_CHAN_RADAR ?
3971 " (IEEE 802.11h required)" : "",
3972 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3973 || (channels[i].flags &
3974 IEEE80211_CHAN_RADAR)) ? "" :
3975 ", IBSS",
3976 channels[i].flags &
3977 IEEE80211_CHAN_PASSIVE_SCAN ?
3978 "passive only" : "active/passive");
3979
3980 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
3981 channels = supp_band->channels;
3982 count = supp_band->n_channels;
3983
3984 len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
3985 "(802.11a):\n", count);
3986
3987 for (i = 0; i < count; i++)
3988 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3989 ieee80211_frequency_to_channel(
3990 channels[i].center_freq),
3991 channels[i].max_power,
3992 channels[i].flags & IEEE80211_CHAN_RADAR ?
3993 " (IEEE 802.11h required)" : "",
3994 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3995 || (channels[i].flags &
3996 IEEE80211_CHAN_RADAR)) ? "" :
3997 ", IBSS",
3998 channels[i].flags &
3999 IEEE80211_CHAN_PASSIVE_SCAN ?
4000 "passive only" : "active/passive");
4001
4002 return len;
4003 }
4004
4005 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
4006
4007 static ssize_t show_statistics(struct device *d,
4008 struct device_attribute *attr, char *buf)
4009 {
4010 struct iwl_priv *priv = dev_get_drvdata(d);
4011 u32 size = sizeof(struct iwl_notif_statistics);
4012 u32 len = 0, ofs = 0;
4013 u8 *data = (u8 *)&priv->statistics;
4014 int rc = 0;
4015
4016 if (!iwl_is_alive(priv))
4017 return -EAGAIN;
4018
4019 mutex_lock(&priv->mutex);
4020 rc = iwl_send_statistics_request(priv, 0);
4021 mutex_unlock(&priv->mutex);
4022
4023 if (rc) {
4024 len = sprintf(buf,
4025 "Error sending statistics request: 0x%08X\n", rc);
4026 return len;
4027 }
4028
4029 while (size && (PAGE_SIZE - len)) {
4030 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4031 PAGE_SIZE - len, 1);
4032 len = strlen(buf);
4033 if (PAGE_SIZE - len)
4034 buf[len++] = '\n';
4035
4036 ofs += 16;
4037 size -= min(size, 16U);
4038 }
4039
4040 return len;
4041 }
4042
4043 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
4044
4045 static ssize_t show_status(struct device *d,
4046 struct device_attribute *attr, char *buf)
4047 {
4048 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4049 if (!iwl_is_alive(priv))
4050 return -EAGAIN;
4051 return sprintf(buf, "0x%08x\n", (int)priv->status);
4052 }
4053
4054 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
4055
4056 /*****************************************************************************
4057 *
4058 * driver setup and teardown
4059 *
4060 *****************************************************************************/
4061
4062 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4063 {
4064 priv->workqueue = create_workqueue(DRV_NAME);
4065
4066 init_waitqueue_head(&priv->wait_command_queue);
4067
4068 INIT_WORK(&priv->up, iwl4965_bg_up);
4069 INIT_WORK(&priv->restart, iwl4965_bg_restart);
4070 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
4071 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
4072 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4073 INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
4074 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4075 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4076 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4077
4078 /* FIXME : remove when resolved PENDING */
4079 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
4080 iwl_setup_scan_deferred_work(priv);
4081
4082 if (priv->cfg->ops->lib->setup_deferred_work)
4083 priv->cfg->ops->lib->setup_deferred_work(priv);
4084
4085 init_timer(&priv->statistics_periodic);
4086 priv->statistics_periodic.data = (unsigned long)priv;
4087 priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
4088
4089 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4090 iwl4965_irq_tasklet, (unsigned long)priv);
4091 }
4092
4093 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4094 {
4095 if (priv->cfg->ops->lib->cancel_deferred_work)
4096 priv->cfg->ops->lib->cancel_deferred_work(priv);
4097
4098 cancel_delayed_work_sync(&priv->init_alive_start);
4099 cancel_delayed_work(&priv->scan_check);
4100 cancel_delayed_work(&priv->alive_start);
4101 cancel_work_sync(&priv->beacon_update);
4102 del_timer_sync(&priv->statistics_periodic);
4103 }
4104
4105 static struct attribute *iwl4965_sysfs_entries[] = {
4106 &dev_attr_channels.attr,
4107 &dev_attr_flags.attr,
4108 &dev_attr_filter_flags.attr,
4109 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
4110 &dev_attr_measurement.attr,
4111 #endif
4112 &dev_attr_power_level.attr,
4113 &dev_attr_retry_rate.attr,
4114 &dev_attr_statistics.attr,
4115 &dev_attr_status.attr,
4116 &dev_attr_temperature.attr,
4117 &dev_attr_tx_power.attr,
4118 #ifdef CONFIG_IWLWIFI_DEBUG
4119 &dev_attr_debug_level.attr,
4120 #endif
4121 &dev_attr_version.attr,
4122
4123 NULL
4124 };
4125
4126 static struct attribute_group iwl4965_attribute_group = {
4127 .name = NULL, /* put in device directory */
4128 .attrs = iwl4965_sysfs_entries,
4129 };
4130
4131 static struct ieee80211_ops iwl4965_hw_ops = {
4132 .tx = iwl4965_mac_tx,
4133 .start = iwl4965_mac_start,
4134 .stop = iwl4965_mac_stop,
4135 .add_interface = iwl4965_mac_add_interface,
4136 .remove_interface = iwl4965_mac_remove_interface,
4137 .config = iwl4965_mac_config,
4138 .config_interface = iwl4965_mac_config_interface,
4139 .configure_filter = iwl4965_configure_filter,
4140 .set_key = iwl4965_mac_set_key,
4141 .update_tkip_key = iwl4965_mac_update_tkip_key,
4142 .get_stats = iwl4965_mac_get_stats,
4143 .get_tx_stats = iwl4965_mac_get_tx_stats,
4144 .conf_tx = iwl4965_mac_conf_tx,
4145 .reset_tsf = iwl4965_mac_reset_tsf,
4146 .bss_info_changed = iwl4965_bss_info_changed,
4147 .ampdu_action = iwl4965_mac_ampdu_action,
4148 .hw_scan = iwl4965_mac_hw_scan
4149 };
4150
4151 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4152 {
4153 int err = 0;
4154 struct iwl_priv *priv;
4155 struct ieee80211_hw *hw;
4156 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4157 unsigned long flags;
4158 DECLARE_MAC_BUF(mac);
4159
4160 /************************
4161 * 1. Allocating HW data
4162 ************************/
4163
4164 /* Disabling hardware scan means that mac80211 will perform scans
4165 * "the hard way", rather than using device's scan. */
4166 if (cfg->mod_params->disable_hw_scan) {
4167 if (cfg->mod_params->debug & IWL_DL_INFO)
4168 dev_printk(KERN_DEBUG, &(pdev->dev),
4169 "Disabling hw_scan\n");
4170 iwl4965_hw_ops.hw_scan = NULL;
4171 }
4172
4173 hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
4174 if (!hw) {
4175 err = -ENOMEM;
4176 goto out;
4177 }
4178 priv = hw->priv;
4179 /* At this point both hw and priv are allocated. */
4180
4181 SET_IEEE80211_DEV(hw, &pdev->dev);
4182
4183 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
4184 priv->cfg = cfg;
4185 priv->pci_dev = pdev;
4186
4187 #ifdef CONFIG_IWLWIFI_DEBUG
4188 priv->debug_level = priv->cfg->mod_params->debug;
4189 atomic_set(&priv->restrict_refcnt, 0);
4190 #endif
4191
4192 /**************************
4193 * 2. Initializing PCI bus
4194 **************************/
4195 if (pci_enable_device(pdev)) {
4196 err = -ENODEV;
4197 goto out_ieee80211_free_hw;
4198 }
4199
4200 pci_set_master(pdev);
4201
4202 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
4203 if (!err)
4204 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
4205 if (err) {
4206 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4207 if (!err)
4208 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
4209 /* both attempts failed: */
4210 if (err) {
4211 printk(KERN_WARNING "%s: No suitable DMA available.\n",
4212 DRV_NAME);
4213 goto out_pci_disable_device;
4214 }
4215 }
4216
4217 err = pci_request_regions(pdev, DRV_NAME);
4218 if (err)
4219 goto out_pci_disable_device;
4220
4221 pci_set_drvdata(pdev, priv);
4222
4223 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4224 * PCI Tx retries from interfering with C3 CPU state */
4225 pci_write_config_byte(pdev, 0x41, 0x00);
4226
4227 /***********************
4228 * 3. Read REV register
4229 ***********************/
4230 priv->hw_base = pci_iomap(pdev, 0, 0);
4231 if (!priv->hw_base) {
4232 err = -ENODEV;
4233 goto out_pci_release_regions;
4234 }
4235
4236 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
4237 (unsigned long long) pci_resource_len(pdev, 0));
4238 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
4239
4240 iwl_hw_detect(priv);
4241 printk(KERN_INFO DRV_NAME
4242 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
4243 priv->cfg->name, priv->hw_rev);
4244
4245 /* amp init */
4246 err = priv->cfg->ops->lib->apm_ops.init(priv);
4247 if (err < 0) {
4248 IWL_DEBUG_INFO("Failed to init APMG\n");
4249 goto out_iounmap;
4250 }
4251 /*****************
4252 * 4. Read EEPROM
4253 *****************/
4254 /* Read the EEPROM */
4255 err = iwl_eeprom_init(priv);
4256 if (err) {
4257 IWL_ERROR("Unable to init EEPROM\n");
4258 goto out_iounmap;
4259 }
4260 err = iwl_eeprom_check_version(priv);
4261 if (err)
4262 goto out_iounmap;
4263
4264 /* extract MAC Address */
4265 iwl_eeprom_get_mac(priv, priv->mac_addr);
4266 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
4267 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4268
4269 /************************
4270 * 5. Setup HW constants
4271 ************************/
4272 if (iwl_set_hw_params(priv)) {
4273 IWL_ERROR("failed to set hw parameters\n");
4274 goto out_free_eeprom;
4275 }
4276
4277 /*******************
4278 * 6. Setup priv
4279 *******************/
4280
4281 err = iwl_init_drv(priv);
4282 if (err)
4283 goto out_free_eeprom;
4284 /* At this point both hw and priv are initialized. */
4285
4286 /**********************************
4287 * 7. Initialize module parameters
4288 **********************************/
4289
4290 /* Disable radio (SW RF KILL) via parameter when loading driver */
4291 if (priv->cfg->mod_params->disable) {
4292 set_bit(STATUS_RF_KILL_SW, &priv->status);
4293 IWL_DEBUG_INFO("Radio disabled.\n");
4294 }
4295
4296 /********************
4297 * 8. Setup services
4298 ********************/
4299 spin_lock_irqsave(&priv->lock, flags);
4300 iwl4965_disable_interrupts(priv);
4301 spin_unlock_irqrestore(&priv->lock, flags);
4302
4303 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4304 if (err) {
4305 IWL_ERROR("failed to create sysfs device attributes\n");
4306 goto out_uninit_drv;
4307 }
4308
4309
4310 iwl_setup_deferred_work(priv);
4311 iwl_setup_rx_handlers(priv);
4312
4313 /********************
4314 * 9. Conclude
4315 ********************/
4316 pci_save_state(pdev);
4317 pci_disable_device(pdev);
4318
4319 /**********************************
4320 * 10. Setup and register mac80211
4321 **********************************/
4322
4323 err = iwl_setup_mac(priv);
4324 if (err)
4325 goto out_remove_sysfs;
4326
4327 err = iwl_dbgfs_register(priv, DRV_NAME);
4328 if (err)
4329 IWL_ERROR("failed to create debugfs files\n");
4330
4331 err = iwl_rfkill_init(priv);
4332 if (err)
4333 IWL_ERROR("Unable to initialize RFKILL system. "
4334 "Ignoring error: %d\n", err);
4335 iwl_power_initialize(priv);
4336 return 0;
4337
4338 out_remove_sysfs:
4339 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4340 out_uninit_drv:
4341 iwl_uninit_drv(priv);
4342 out_free_eeprom:
4343 iwl_eeprom_free(priv);
4344 out_iounmap:
4345 pci_iounmap(pdev, priv->hw_base);
4346 out_pci_release_regions:
4347 pci_release_regions(pdev);
4348 pci_set_drvdata(pdev, NULL);
4349 out_pci_disable_device:
4350 pci_disable_device(pdev);
4351 out_ieee80211_free_hw:
4352 ieee80211_free_hw(priv->hw);
4353 out:
4354 return err;
4355 }
4356
4357 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
4358 {
4359 struct iwl_priv *priv = pci_get_drvdata(pdev);
4360 unsigned long flags;
4361
4362 if (!priv)
4363 return;
4364
4365 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4366
4367 iwl_dbgfs_unregister(priv);
4368 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4369
4370 if (priv->mac80211_registered) {
4371 ieee80211_unregister_hw(priv->hw);
4372 priv->mac80211_registered = 0;
4373 }
4374
4375 set_bit(STATUS_EXIT_PENDING, &priv->status);
4376
4377 iwl4965_down(priv);
4378
4379 /* make sure we flush any pending irq or
4380 * tasklet for the driver
4381 */
4382 spin_lock_irqsave(&priv->lock, flags);
4383 iwl4965_disable_interrupts(priv);
4384 spin_unlock_irqrestore(&priv->lock, flags);
4385
4386 iwl_synchronize_irq(priv);
4387
4388 iwl_rfkill_unregister(priv);
4389 iwl4965_dealloc_ucode_pci(priv);
4390
4391 if (priv->rxq.bd)
4392 iwl_rx_queue_free(priv, &priv->rxq);
4393 iwl_hw_txq_ctx_free(priv);
4394
4395 iwl_clear_stations_table(priv);
4396 iwl_eeprom_free(priv);
4397
4398
4399 /*netif_stop_queue(dev); */
4400 flush_workqueue(priv->workqueue);
4401
4402 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
4403 * priv->workqueue... so we can't take down the workqueue
4404 * until now... */
4405 destroy_workqueue(priv->workqueue);
4406 priv->workqueue = NULL;
4407
4408 pci_iounmap(pdev, priv->hw_base);
4409 pci_release_regions(pdev);
4410 pci_disable_device(pdev);
4411 pci_set_drvdata(pdev, NULL);
4412
4413 iwl_uninit_drv(priv);
4414
4415 if (priv->ibss_beacon)
4416 dev_kfree_skb(priv->ibss_beacon);
4417
4418 ieee80211_free_hw(priv->hw);
4419 }
4420
4421 #ifdef CONFIG_PM
4422
4423 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4424 {
4425 struct iwl_priv *priv = pci_get_drvdata(pdev);
4426
4427 if (priv->is_open) {
4428 set_bit(STATUS_IN_SUSPEND, &priv->status);
4429 iwl4965_mac_stop(priv->hw);
4430 priv->is_open = 1;
4431 }
4432
4433 pci_set_power_state(pdev, PCI_D3hot);
4434
4435 return 0;
4436 }
4437
4438 static int iwl4965_pci_resume(struct pci_dev *pdev)
4439 {
4440 struct iwl_priv *priv = pci_get_drvdata(pdev);
4441
4442 pci_set_power_state(pdev, PCI_D0);
4443
4444 if (priv->is_open)
4445 iwl4965_mac_start(priv->hw);
4446
4447 clear_bit(STATUS_IN_SUSPEND, &priv->status);
4448 return 0;
4449 }
4450
4451 #endif /* CONFIG_PM */
4452
4453 /*****************************************************************************
4454 *
4455 * driver and module entry point
4456 *
4457 *****************************************************************************/
4458
4459 /* Hardware specific file defines the PCI IDs table for that hardware module */
4460 static struct pci_device_id iwl_hw_card_ids[] = {
4461 #ifdef CONFIG_IWL4965
4462 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4463 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4464 #endif /* CONFIG_IWL4965 */
4465 #ifdef CONFIG_IWL5000
4466 {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
4467 {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
4468 {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
4469 {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
4470 {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
4471 {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
4472 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4473 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4474 {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
4475 {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
4476 {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
4477 #endif /* CONFIG_IWL5000 */
4478 {0}
4479 };
4480 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4481
4482 static struct pci_driver iwl_driver = {
4483 .name = DRV_NAME,
4484 .id_table = iwl_hw_card_ids,
4485 .probe = iwl4965_pci_probe,
4486 .remove = __devexit_p(iwl4965_pci_remove),
4487 #ifdef CONFIG_PM
4488 .suspend = iwl4965_pci_suspend,
4489 .resume = iwl4965_pci_resume,
4490 #endif
4491 };
4492
4493 static int __init iwl4965_init(void)
4494 {
4495
4496 int ret;
4497 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4498 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4499
4500 ret = iwlagn_rate_control_register();
4501 if (ret) {
4502 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4503 return ret;
4504 }
4505
4506 ret = pci_register_driver(&iwl_driver);
4507 if (ret) {
4508 IWL_ERROR("Unable to initialize PCI module\n");
4509 goto error_register;
4510 }
4511
4512 return ret;
4513
4514 error_register:
4515 iwlagn_rate_control_unregister();
4516 return ret;
4517 }
4518
4519 static void __exit iwl4965_exit(void)
4520 {
4521 pci_unregister_driver(&iwl_driver);
4522 iwlagn_rate_control_unregister();
4523 }
4524
4525 module_exit(iwl4965_exit);
4526 module_init(iwl4965_init);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree