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iwlwifi: move iwl4965_mac_ampdu_action to iwl4965-base.c
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / wireless / iwlwifi / iwl4965-base.c
bloba34280f65c1a89b858bc18fa0b6f08d05c12f0ea
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_IWL4965_SPECTRUM_MEASUREMENT
77 #define VS "s"
78 #else
79 #define VS
80 #endif
81
82 #define DRV_VERSION IWLWIFI_VERSION VD VS
83
84
85 MODULE_DESCRIPTION(DRV_DESCRIPTION);
86 MODULE_VERSION(DRV_VERSION);
87 MODULE_AUTHOR(DRV_COPYRIGHT);
88 MODULE_LICENSE("GPL");
89
90 /*************** STATION TABLE MANAGEMENT ****
91 * mac80211 should be examined to determine if sta_info is duplicating
92 * the functionality provided here
93 */
94
95 /**************************************************************/
96
97
98
99 static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
100 {
101 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
102
103 if (hw_decrypt)
104 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
105 else
106 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
107
108 }
109
110 /**
111 * iwl4965_check_rxon_cmd - validate RXON structure is valid
112 *
113 * NOTE: This is really only useful during development and can eventually
114 * be #ifdef'd out once the driver is stable and folks aren't actively
115 * making changes
116 */
117 static int iwl4965_check_rxon_cmd(struct iwl_rxon_cmd *rxon)
118 {
119 int error = 0;
120 int counter = 1;
121
122 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
123 error |= le32_to_cpu(rxon->flags &
124 (RXON_FLG_TGJ_NARROW_BAND_MSK |
125 RXON_FLG_RADAR_DETECT_MSK));
126 if (error)
127 IWL_WARNING("check 24G fields %d | %d\n",
128 counter++, error);
129 } else {
130 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
131 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
132 if (error)
133 IWL_WARNING("check 52 fields %d | %d\n",
134 counter++, error);
135 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
136 if (error)
137 IWL_WARNING("check 52 CCK %d | %d\n",
138 counter++, error);
139 }
140 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
141 if (error)
142 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
143
144 /* make sure basic rates 6Mbps and 1Mbps are supported */
145 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
146 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
147 if (error)
148 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
149
150 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
151 if (error)
152 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
153
154 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
155 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
156 if (error)
157 IWL_WARNING("check CCK and short slot %d | %d\n",
158 counter++, error);
159
160 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
161 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
162 if (error)
163 IWL_WARNING("check CCK & auto detect %d | %d\n",
164 counter++, error);
165
166 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
167 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
168 if (error)
169 IWL_WARNING("check TGG and auto detect %d | %d\n",
170 counter++, error);
171
172 if (error)
173 IWL_WARNING("Tuning to channel %d\n",
174 le16_to_cpu(rxon->channel));
175
176 if (error) {
177 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
178 return -1;
179 }
180 return 0;
181 }
182
183 /**
184 * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
185 * @priv: staging_rxon is compared to active_rxon
186 *
187 * If the RXON structure is changing enough to require a new tune,
188 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
189 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
190 */
191 static int iwl4965_full_rxon_required(struct iwl_priv *priv)
192 {
193
194 /* These items are only settable from the full RXON command */
195 if (!(iwl_is_associated(priv)) ||
196 compare_ether_addr(priv->staging_rxon.bssid_addr,
197 priv->active_rxon.bssid_addr) ||
198 compare_ether_addr(priv->staging_rxon.node_addr,
199 priv->active_rxon.node_addr) ||
200 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
201 priv->active_rxon.wlap_bssid_addr) ||
202 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
203 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
204 (priv->staging_rxon.air_propagation !=
205 priv->active_rxon.air_propagation) ||
206 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
207 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
208 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
209 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
210 (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
211 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
212 return 1;
213
214 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
215 * be updated with the RXON_ASSOC command -- however only some
216 * flag transitions are allowed using RXON_ASSOC */
217
218 /* Check if we are not switching bands */
219 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
220 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
221 return 1;
222
223 /* Check if we are switching association toggle */
224 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
225 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
226 return 1;
227
228 return 0;
229 }
230
231 /**
232 * iwl4965_commit_rxon - commit staging_rxon to hardware
233 *
234 * The RXON command in staging_rxon is committed to the hardware and
235 * the active_rxon structure is updated with the new data. This
236 * function correctly transitions out of the RXON_ASSOC_MSK state if
237 * a HW tune is required based on the RXON structure changes.
238 */
239 static int iwl4965_commit_rxon(struct iwl_priv *priv)
240 {
241 /* cast away the const for active_rxon in this function */
242 struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
243 DECLARE_MAC_BUF(mac);
244 int ret;
245 bool new_assoc =
246 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
247
248 if (!iwl_is_alive(priv))
249 return -EBUSY;
250
251 /* always get timestamp with Rx frame */
252 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
253 /* allow CTS-to-self if possible. this is relevant only for
254 * 5000, but will not damage 4965 */
255 priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
256
257 ret = iwl4965_check_rxon_cmd(&priv->staging_rxon);
258 if (ret) {
259 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
260 return -EINVAL;
261 }
262
263 /* If we don't need to send a full RXON, we can use
264 * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
265 * and other flags for the current radio configuration. */
266 if (!iwl4965_full_rxon_required(priv)) {
267 ret = iwl_send_rxon_assoc(priv);
268 if (ret) {
269 IWL_ERROR("Error setting RXON_ASSOC (%d)\n", ret);
270 return ret;
271 }
272
273 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
274 return 0;
275 }
276
277 /* station table will be cleared */
278 priv->assoc_station_added = 0;
279
280 /* If we are currently associated and the new config requires
281 * an RXON_ASSOC and the new config wants the associated mask enabled,
282 * we must clear the associated from the active configuration
283 * before we apply the new config */
284 if (iwl_is_associated(priv) && new_assoc) {
285 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
286 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
287
288 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
289 sizeof(struct iwl_rxon_cmd),
290 &priv->active_rxon);
291
292 /* If the mask clearing failed then we set
293 * active_rxon back to what it was previously */
294 if (ret) {
295 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
296 IWL_ERROR("Error clearing ASSOC_MSK (%d)\n", ret);
297 return ret;
298 }
299 }
300
301 IWL_DEBUG_INFO("Sending RXON\n"
302 "* with%s RXON_FILTER_ASSOC_MSK\n"
303 "* channel = %d\n"
304 "* bssid = %s\n",
305 (new_assoc ? "" : "out"),
306 le16_to_cpu(priv->staging_rxon.channel),
307 print_mac(mac, priv->staging_rxon.bssid_addr));
308
309 iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
310
311 /* Apply the new configuration
312 * RXON unassoc clears the station table in uCode, send it before
313 * we add the bcast station. If assoc bit is set, we will send RXON
314 * after having added the bcast and bssid station.
315 */
316 if (!new_assoc) {
317 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
318 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
319 if (ret) {
320 IWL_ERROR("Error setting new RXON (%d)\n", ret);
321 return ret;
322 }
323 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
324 }
325
326 iwl_clear_stations_table(priv);
327
328 if (!priv->error_recovering)
329 priv->start_calib = 0;
330
331 /* Add the broadcast address so we can send broadcast frames */
332 if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
333 IWL_INVALID_STATION) {
334 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
335 return -EIO;
336 }
337
338 /* If we have set the ASSOC_MSK and we are in BSS mode then
339 * add the IWL_AP_ID to the station rate table */
340 if (new_assoc) {
341 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
342 ret = iwl_rxon_add_station(priv,
343 priv->active_rxon.bssid_addr, 1);
344 if (ret == IWL_INVALID_STATION) {
345 IWL_ERROR("Error adding AP address for TX.\n");
346 return -EIO;
347 }
348 priv->assoc_station_added = 1;
349 if (priv->default_wep_key &&
350 iwl_send_static_wepkey_cmd(priv, 0))
351 IWL_ERROR("Could not send WEP static key.\n");
352 }
353
354 /* Apply the new configuration
355 * RXON assoc doesn't clear the station table in uCode,
356 */
357 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
358 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
359 if (ret) {
360 IWL_ERROR("Error setting new RXON (%d)\n", ret);
361 return ret;
362 }
363 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
364 }
365
366 iwl_init_sensitivity(priv);
367
368 /* If we issue a new RXON command which required a tune then we must
369 * send a new TXPOWER command or we won't be able to Tx any frames */
370 ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
371 if (ret) {
372 IWL_ERROR("Error sending TX power (%d)\n", ret);
373 return ret;
374 }
375
376 return 0;
377 }
378
379 void iwl4965_update_chain_flags(struct iwl_priv *priv)
380 {
381
382 iwl_set_rxon_chain(priv);
383 iwl4965_commit_rxon(priv);
384 }
385
386 static int iwl4965_send_bt_config(struct iwl_priv *priv)
387 {
388 struct iwl4965_bt_cmd bt_cmd = {
389 .flags = 3,
390 .lead_time = 0xAA,
391 .max_kill = 1,
392 .kill_ack_mask = 0,
393 .kill_cts_mask = 0,
394 };
395
396 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
397 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
398 }
399
400 static void iwl_clear_free_frames(struct iwl_priv *priv)
401 {
402 struct list_head *element;
403
404 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
405 priv->frames_count);
406
407 while (!list_empty(&priv->free_frames)) {
408 element = priv->free_frames.next;
409 list_del(element);
410 kfree(list_entry(element, struct iwl_frame, list));
411 priv->frames_count--;
412 }
413
414 if (priv->frames_count) {
415 IWL_WARNING("%d frames still in use. Did we lose one?\n",
416 priv->frames_count);
417 priv->frames_count = 0;
418 }
419 }
420
421 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
422 {
423 struct iwl_frame *frame;
424 struct list_head *element;
425 if (list_empty(&priv->free_frames)) {
426 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
427 if (!frame) {
428 IWL_ERROR("Could not allocate frame!\n");
429 return NULL;
430 }
431
432 priv->frames_count++;
433 return frame;
434 }
435
436 element = priv->free_frames.next;
437 list_del(element);
438 return list_entry(element, struct iwl_frame, list);
439 }
440
441 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
442 {
443 memset(frame, 0, sizeof(*frame));
444 list_add(&frame->list, &priv->free_frames);
445 }
446
447 unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
448 struct ieee80211_hdr *hdr,
449 const u8 *dest, int left)
450 {
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 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
491 {
492 struct iwl_frame *frame;
493 unsigned int frame_size;
494 int rc;
495 u8 rate;
496
497 frame = iwl_get_free_frame(priv);
498
499 if (!frame) {
500 IWL_ERROR("Could not obtain free frame buffer for beacon "
501 "command.\n");
502 return -ENOMEM;
503 }
504
505 rate = iwl4965_rate_get_lowest_plcp(priv);
506
507 frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
508
509 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
510 &frame->u.cmd[0]);
511
512 iwl_free_frame(priv, frame);
513
514 return rc;
515 }
516
517 /******************************************************************************
518 *
519 * Misc. internal state and helper functions
520 *
521 ******************************************************************************/
522
523 static void iwl4965_ht_conf(struct iwl_priv *priv,
524 struct ieee80211_bss_conf *bss_conf)
525 {
526 struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
527 struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
528 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
529
530 IWL_DEBUG_MAC80211("enter: \n");
531
532 iwl_conf->is_ht = bss_conf->assoc_ht;
533
534 if (!iwl_conf->is_ht)
535 return;
536
537 priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
538
539 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
540 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
541 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
542 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
543
544 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
545 iwl_conf->max_amsdu_size =
546 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
547
548 iwl_conf->supported_chan_width =
549 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
550 iwl_conf->extension_chan_offset =
551 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
552 /* If no above or below channel supplied disable FAT channel */
553 if (iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_ABOVE &&
554 iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_BELOW) {
555 iwl_conf->extension_chan_offset = IEEE80211_HT_IE_CHA_SEC_NONE;
556 iwl_conf->supported_chan_width = 0;
557 }
558
559 iwl_conf->tx_mimo_ps_mode =
560 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
561 memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
562
563 iwl_conf->control_channel = ht_bss_conf->primary_channel;
564 iwl_conf->tx_chan_width =
565 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
566 iwl_conf->ht_protection =
567 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
568 iwl_conf->non_GF_STA_present =
569 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
570
571 IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
572 IWL_DEBUG_MAC80211("leave\n");
573 }
574
575 /*
576 * QoS support
577 */
578 static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
579 {
580 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
581 return;
582
583 if (!priv->qos_data.qos_enable)
584 return;
585
586 priv->qos_data.def_qos_parm.qos_flags = 0;
587
588 if (priv->qos_data.qos_cap.q_AP.queue_request &&
589 !priv->qos_data.qos_cap.q_AP.txop_request)
590 priv->qos_data.def_qos_parm.qos_flags |=
591 QOS_PARAM_FLG_TXOP_TYPE_MSK;
592 if (priv->qos_data.qos_active)
593 priv->qos_data.def_qos_parm.qos_flags |=
594 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
595
596 if (priv->current_ht_config.is_ht)
597 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
598
599 if (force || iwl_is_associated(priv)) {
600 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
601 priv->qos_data.qos_active,
602 priv->qos_data.def_qos_parm.qos_flags);
603
604 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
605 sizeof(struct iwl_qosparam_cmd),
606 &priv->qos_data.def_qos_parm, NULL);
607 }
608 }
609
610 #define MAX_UCODE_BEACON_INTERVAL 4096
611 #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
612
613 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
614 {
615 u16 new_val = 0;
616 u16 beacon_factor = 0;
617
618 beacon_factor =
619 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
620 / MAX_UCODE_BEACON_INTERVAL;
621 new_val = beacon_val / beacon_factor;
622
623 return cpu_to_le16(new_val);
624 }
625
626 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
627 {
628 u64 interval_tm_unit;
629 u64 tsf, result;
630 unsigned long flags;
631 struct ieee80211_conf *conf = NULL;
632 u16 beacon_int = 0;
633
634 conf = ieee80211_get_hw_conf(priv->hw);
635
636 spin_lock_irqsave(&priv->lock, flags);
637 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
638 priv->rxon_timing.timestamp.dw[0] =
639 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
640
641 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
642
643 tsf = priv->timestamp;
644
645 beacon_int = priv->beacon_int;
646 spin_unlock_irqrestore(&priv->lock, flags);
647
648 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
649 if (beacon_int == 0) {
650 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
651 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
652 } else {
653 priv->rxon_timing.beacon_interval =
654 cpu_to_le16(beacon_int);
655 priv->rxon_timing.beacon_interval =
656 iwl4965_adjust_beacon_interval(
657 le16_to_cpu(priv->rxon_timing.beacon_interval));
658 }
659
660 priv->rxon_timing.atim_window = 0;
661 } else {
662 priv->rxon_timing.beacon_interval =
663 iwl4965_adjust_beacon_interval(conf->beacon_int);
664 /* TODO: we need to get atim_window from upper stack
665 * for now we set to 0 */
666 priv->rxon_timing.atim_window = 0;
667 }
668
669 interval_tm_unit =
670 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
671 result = do_div(tsf, interval_tm_unit);
672 priv->rxon_timing.beacon_init_val =
673 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
674
675 IWL_DEBUG_ASSOC
676 ("beacon interval %d beacon timer %d beacon tim %d\n",
677 le16_to_cpu(priv->rxon_timing.beacon_interval),
678 le32_to_cpu(priv->rxon_timing.beacon_init_val),
679 le16_to_cpu(priv->rxon_timing.atim_window));
680 }
681
682 static void iwl_set_flags_for_band(struct iwl_priv *priv,
683 enum ieee80211_band band)
684 {
685 if (band == IEEE80211_BAND_5GHZ) {
686 priv->staging_rxon.flags &=
687 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
688 | RXON_FLG_CCK_MSK);
689 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
690 } else {
691 /* Copied from iwl4965_post_associate() */
692 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
693 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
694 else
695 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
696
697 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
698 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
699
700 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
701 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
702 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
703 }
704 }
705
706 /*
707 * initialize rxon structure with default values from eeprom
708 */
709 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
710 {
711 const struct iwl_channel_info *ch_info;
712
713 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
714
715 switch (priv->iw_mode) {
716 case IEEE80211_IF_TYPE_AP:
717 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
718 break;
719
720 case IEEE80211_IF_TYPE_STA:
721 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
722 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
723 break;
724
725 case IEEE80211_IF_TYPE_IBSS:
726 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
727 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
728 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
729 RXON_FILTER_ACCEPT_GRP_MSK;
730 break;
731
732 case IEEE80211_IF_TYPE_MNTR:
733 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
734 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
735 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
736 break;
737 default:
738 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
739 break;
740 }
741
742 #if 0
743 /* TODO: Figure out when short_preamble would be set and cache from
744 * that */
745 if (!hw_to_local(priv->hw)->short_preamble)
746 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
747 else
748 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
749 #endif
750
751 ch_info = iwl_get_channel_info(priv, priv->band,
752 le16_to_cpu(priv->active_rxon.channel));
753
754 if (!ch_info)
755 ch_info = &priv->channel_info[0];
756
757 /*
758 * in some case A channels are all non IBSS
759 * in this case force B/G channel
760 */
761 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
762 !(is_channel_ibss(ch_info)))
763 ch_info = &priv->channel_info[0];
764
765 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
766 priv->band = ch_info->band;
767
768 iwl_set_flags_for_band(priv, priv->band);
769
770 priv->staging_rxon.ofdm_basic_rates =
771 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
772 priv->staging_rxon.cck_basic_rates =
773 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
774
775 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
776 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
777 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
778 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
779 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
780 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
781 iwl_set_rxon_chain(priv);
782 }
783
784 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
785 {
786 priv->iw_mode = mode;
787
788 iwl4965_connection_init_rx_config(priv);
789 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
790
791 iwl_clear_stations_table(priv);
792
793 /* dont commit rxon if rf-kill is on*/
794 if (!iwl_is_ready_rf(priv))
795 return -EAGAIN;
796
797 cancel_delayed_work(&priv->scan_check);
798 if (iwl_scan_cancel_timeout(priv, 100)) {
799 IWL_WARNING("Aborted scan still in progress after 100ms\n");
800 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
801 return -EAGAIN;
802 }
803
804 iwl4965_commit_rxon(priv);
805
806 return 0;
807 }
808
809 static void iwl4965_set_rate(struct iwl_priv *priv)
810 {
811 const struct ieee80211_supported_band *hw = NULL;
812 struct ieee80211_rate *rate;
813 int i;
814
815 hw = iwl_get_hw_mode(priv, priv->band);
816 if (!hw) {
817 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
818 return;
819 }
820
821 priv->active_rate = 0;
822 priv->active_rate_basic = 0;
823
824 for (i = 0; i < hw->n_bitrates; i++) {
825 rate = &(hw->bitrates[i]);
826 if (rate->hw_value < IWL_RATE_COUNT)
827 priv->active_rate |= (1 << rate->hw_value);
828 }
829
830 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
831 priv->active_rate, priv->active_rate_basic);
832
833 /*
834 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
835 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
836 * OFDM
837 */
838 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
839 priv->staging_rxon.cck_basic_rates =
840 ((priv->active_rate_basic &
841 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
842 else
843 priv->staging_rxon.cck_basic_rates =
844 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
845
846 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
847 priv->staging_rxon.ofdm_basic_rates =
848 ((priv->active_rate_basic &
849 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
850 IWL_FIRST_OFDM_RATE) & 0xFF;
851 else
852 priv->staging_rxon.ofdm_basic_rates =
853 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
854 }
855
856 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
857
858 #include "iwl-spectrum.h"
859
860 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
861 #define BEACON_TIME_MASK_HIGH 0xFF000000
862 #define TIME_UNIT 1024
863
864 /*
865 * extended beacon time format
866 * time in usec will be changed into a 32-bit value in 8:24 format
867 * the high 1 byte is the beacon counts
868 * the lower 3 bytes is the time in usec within one beacon interval
869 */
870
871 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
872 {
873 u32 quot;
874 u32 rem;
875 u32 interval = beacon_interval * 1024;
876
877 if (!interval || !usec)
878 return 0;
879
880 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
881 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
882
883 return (quot << 24) + rem;
884 }
885
886 /* base is usually what we get from ucode with each received frame,
887 * the same as HW timer counter counting down
888 */
889
890 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
891 {
892 u32 base_low = base & BEACON_TIME_MASK_LOW;
893 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
894 u32 interval = beacon_interval * TIME_UNIT;
895 u32 res = (base & BEACON_TIME_MASK_HIGH) +
896 (addon & BEACON_TIME_MASK_HIGH);
897
898 if (base_low > addon_low)
899 res += base_low - addon_low;
900 else if (base_low < addon_low) {
901 res += interval + base_low - addon_low;
902 res += (1 << 24);
903 } else
904 res += (1 << 24);
905
906 return cpu_to_le32(res);
907 }
908
909 static int iwl4965_get_measurement(struct iwl_priv *priv,
910 struct ieee80211_measurement_params *params,
911 u8 type)
912 {
913 struct iwl4965_spectrum_cmd spectrum;
914 struct iwl_rx_packet *res;
915 struct iwl_host_cmd cmd = {
916 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
917 .data = (void *)&spectrum,
918 .meta.flags = CMD_WANT_SKB,
919 };
920 u32 add_time = le64_to_cpu(params->start_time);
921 int rc;
922 int spectrum_resp_status;
923 int duration = le16_to_cpu(params->duration);
924
925 if (iwl_is_associated(priv))
926 add_time =
927 iwl4965_usecs_to_beacons(
928 le64_to_cpu(params->start_time) - priv->last_tsf,
929 le16_to_cpu(priv->rxon_timing.beacon_interval));
930
931 memset(&spectrum, 0, sizeof(spectrum));
932
933 spectrum.channel_count = cpu_to_le16(1);
934 spectrum.flags =
935 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
936 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
937 cmd.len = sizeof(spectrum);
938 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
939
940 if (iwl_is_associated(priv))
941 spectrum.start_time =
942 iwl4965_add_beacon_time(priv->last_beacon_time,
943 add_time,
944 le16_to_cpu(priv->rxon_timing.beacon_interval));
945 else
946 spectrum.start_time = 0;
947
948 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
949 spectrum.channels[0].channel = params->channel;
950 spectrum.channels[0].type = type;
951 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
952 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
953 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
954
955 rc = iwl_send_cmd_sync(priv, &cmd);
956 if (rc)
957 return rc;
958
959 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
960 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
961 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
962 rc = -EIO;
963 }
964
965 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
966 switch (spectrum_resp_status) {
967 case 0: /* Command will be handled */
968 if (res->u.spectrum.id != 0xff) {
969 IWL_DEBUG_INFO
970 ("Replaced existing measurement: %d\n",
971 res->u.spectrum.id);
972 priv->measurement_status &= ~MEASUREMENT_READY;
973 }
974 priv->measurement_status |= MEASUREMENT_ACTIVE;
975 rc = 0;
976 break;
977
978 case 1: /* Command will not be handled */
979 rc = -EAGAIN;
980 break;
981 }
982
983 dev_kfree_skb_any(cmd.meta.u.skb);
984
985 return rc;
986 }
987 #endif
988
989 /******************************************************************************
990 *
991 * Generic RX handler implementations
992 *
993 ******************************************************************************/
994 static void iwl_rx_reply_alive(struct iwl_priv *priv,
995 struct iwl_rx_mem_buffer *rxb)
996 {
997 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
998 struct iwl_alive_resp *palive;
999 struct delayed_work *pwork;
1000
1001 palive = &pkt->u.alive_frame;
1002
1003 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1004 "0x%01X 0x%01X\n",
1005 palive->is_valid, palive->ver_type,
1006 palive->ver_subtype);
1007
1008 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1009 IWL_DEBUG_INFO("Initialization Alive received.\n");
1010 memcpy(&priv->card_alive_init,
1011 &pkt->u.alive_frame,
1012 sizeof(struct iwl_init_alive_resp));
1013 pwork = &priv->init_alive_start;
1014 } else {
1015 IWL_DEBUG_INFO("Runtime Alive received.\n");
1016 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1017 sizeof(struct iwl_alive_resp));
1018 pwork = &priv->alive_start;
1019 }
1020
1021 /* We delay the ALIVE response by 5ms to
1022 * give the HW RF Kill time to activate... */
1023 if (palive->is_valid == UCODE_VALID_OK)
1024 queue_delayed_work(priv->workqueue, pwork,
1025 msecs_to_jiffies(5));
1026 else
1027 IWL_WARNING("uCode did not respond OK.\n");
1028 }
1029
1030 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1031 struct iwl_rx_mem_buffer *rxb)
1032 {
1033 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1034
1035 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1036 "seq 0x%04X ser 0x%08X\n",
1037 le32_to_cpu(pkt->u.err_resp.error_type),
1038 get_cmd_string(pkt->u.err_resp.cmd_id),
1039 pkt->u.err_resp.cmd_id,
1040 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1041 le32_to_cpu(pkt->u.err_resp.error_info));
1042 }
1043
1044 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1045
1046 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1047 {
1048 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1049 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1050 struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1051 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1052 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1053 rxon->channel = csa->channel;
1054 priv->staging_rxon.channel = csa->channel;
1055 }
1056
1057 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1058 struct iwl_rx_mem_buffer *rxb)
1059 {
1060 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1061 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1062 struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1063
1064 if (!report->state) {
1065 IWL_DEBUG(IWL_DL_11H,
1066 "Spectrum Measure Notification: Start\n");
1067 return;
1068 }
1069
1070 memcpy(&priv->measure_report, report, sizeof(*report));
1071 priv->measurement_status |= MEASUREMENT_READY;
1072 #endif
1073 }
1074
1075 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1076 struct iwl_rx_mem_buffer *rxb)
1077 {
1078 #ifdef CONFIG_IWLWIFI_DEBUG
1079 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1080 struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1081 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1082 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1083 #endif
1084 }
1085
1086 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1087 struct iwl_rx_mem_buffer *rxb)
1088 {
1089 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1090 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1091 "notification for %s:\n",
1092 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1093 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1094 }
1095
1096 static void iwl4965_bg_beacon_update(struct work_struct *work)
1097 {
1098 struct iwl_priv *priv =
1099 container_of(work, struct iwl_priv, beacon_update);
1100 struct sk_buff *beacon;
1101
1102 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1103 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1104
1105 if (!beacon) {
1106 IWL_ERROR("update beacon failed\n");
1107 return;
1108 }
1109
1110 mutex_lock(&priv->mutex);
1111 /* new beacon skb is allocated every time; dispose previous.*/
1112 if (priv->ibss_beacon)
1113 dev_kfree_skb(priv->ibss_beacon);
1114
1115 priv->ibss_beacon = beacon;
1116 mutex_unlock(&priv->mutex);
1117
1118 iwl4965_send_beacon_cmd(priv);
1119 }
1120
1121 /**
1122 * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1123 *
1124 * This callback is provided in order to send a statistics request.
1125 *
1126 * This timer function is continually reset to execute within
1127 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1128 * was received. We need to ensure we receive the statistics in order
1129 * to update the temperature used for calibrating the TXPOWER.
1130 */
1131 static void iwl4965_bg_statistics_periodic(unsigned long data)
1132 {
1133 struct iwl_priv *priv = (struct iwl_priv *)data;
1134
1135 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1136 return;
1137
1138 iwl_send_statistics_request(priv, CMD_ASYNC);
1139 }
1140
1141 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1142 struct iwl_rx_mem_buffer *rxb)
1143 {
1144 #ifdef CONFIG_IWLWIFI_DEBUG
1145 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1146 struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1147 u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1148
1149 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1150 "tsf %d %d rate %d\n",
1151 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1152 beacon->beacon_notify_hdr.failure_frame,
1153 le32_to_cpu(beacon->ibss_mgr_status),
1154 le32_to_cpu(beacon->high_tsf),
1155 le32_to_cpu(beacon->low_tsf), rate);
1156 #endif
1157
1158 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
1159 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1160 queue_work(priv->workqueue, &priv->beacon_update);
1161 }
1162
1163 /* Handle notification from uCode that card's power state is changing
1164 * due to software, hardware, or critical temperature RFKILL */
1165 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1166 struct iwl_rx_mem_buffer *rxb)
1167 {
1168 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1169 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1170 unsigned long status = priv->status;
1171
1172 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1173 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1174 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1175
1176 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1177 RF_CARD_DISABLED)) {
1178
1179 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1180 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1181
1182 if (!iwl_grab_nic_access(priv)) {
1183 iwl_write_direct32(
1184 priv, HBUS_TARG_MBX_C,
1185 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1186
1187 iwl_release_nic_access(priv);
1188 }
1189
1190 if (!(flags & RXON_CARD_DISABLED)) {
1191 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1192 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1193 if (!iwl_grab_nic_access(priv)) {
1194 iwl_write_direct32(
1195 priv, HBUS_TARG_MBX_C,
1196 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1197
1198 iwl_release_nic_access(priv);
1199 }
1200 }
1201
1202 if (flags & RF_CARD_DISABLED) {
1203 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1204 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1205 iwl_read32(priv, CSR_UCODE_DRV_GP1);
1206 if (!iwl_grab_nic_access(priv))
1207 iwl_release_nic_access(priv);
1208 }
1209 }
1210
1211 if (flags & HW_CARD_DISABLED)
1212 set_bit(STATUS_RF_KILL_HW, &priv->status);
1213 else
1214 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1215
1216
1217 if (flags & SW_CARD_DISABLED)
1218 set_bit(STATUS_RF_KILL_SW, &priv->status);
1219 else
1220 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1221
1222 if (!(flags & RXON_CARD_DISABLED))
1223 iwl_scan_cancel(priv);
1224
1225 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1226 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1227 (test_bit(STATUS_RF_KILL_SW, &status) !=
1228 test_bit(STATUS_RF_KILL_SW, &priv->status)))
1229 queue_work(priv->workqueue, &priv->rf_kill);
1230 else
1231 wake_up_interruptible(&priv->wait_command_queue);
1232 }
1233
1234 /**
1235 * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1236 *
1237 * Setup the RX handlers for each of the reply types sent from the uCode
1238 * to the host.
1239 *
1240 * This function chains into the hardware specific files for them to setup
1241 * any hardware specific handlers as well.
1242 */
1243 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1244 {
1245 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1246 priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1247 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1248 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1249 iwl4965_rx_spectrum_measure_notif;
1250 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1251 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1252 iwl4965_rx_pm_debug_statistics_notif;
1253 priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1254
1255 /*
1256 * The same handler is used for both the REPLY to a discrete
1257 * statistics request from the host as well as for the periodic
1258 * statistics notifications (after received beacons) from the uCode.
1259 */
1260 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1261 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1262
1263 iwl_setup_rx_scan_handlers(priv);
1264
1265 /* status change handler */
1266 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1267
1268 priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1269 iwl_rx_missed_beacon_notif;
1270 /* Rx handlers */
1271 priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1272 priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1273 /* block ack */
1274 priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1275 /* Set up hardware specific Rx handlers */
1276 priv->cfg->ops->lib->rx_handler_setup(priv);
1277 }
1278
1279 /*
1280 * this should be called while priv->lock is locked
1281 */
1282 static void __iwl_rx_replenish(struct iwl_priv *priv)
1283 {
1284 iwl_rx_allocate(priv);
1285 iwl_rx_queue_restock(priv);
1286 }
1287
1288
1289 /**
1290 * iwl_rx_handle - Main entry function for receiving responses from uCode
1291 *
1292 * Uses the priv->rx_handlers callback function array to invoke
1293 * the appropriate handlers, including command responses,
1294 * frame-received notifications, and other notifications.
1295 */
1296 void iwl_rx_handle(struct iwl_priv *priv)
1297 {
1298 struct iwl_rx_mem_buffer *rxb;
1299 struct iwl_rx_packet *pkt;
1300 struct iwl_rx_queue *rxq = &priv->rxq;
1301 u32 r, i;
1302 int reclaim;
1303 unsigned long flags;
1304 u8 fill_rx = 0;
1305 u32 count = 8;
1306
1307 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1308 * buffer that the driver may process (last buffer filled by ucode). */
1309 r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1310 i = rxq->read;
1311
1312 /* Rx interrupt, but nothing sent from uCode */
1313 if (i == r)
1314 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1315
1316 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1317 fill_rx = 1;
1318
1319 while (i != r) {
1320 rxb = rxq->queue[i];
1321
1322 /* If an RXB doesn't have a Rx queue slot associated with it,
1323 * then a bug has been introduced in the queue refilling
1324 * routines -- catch it here */
1325 BUG_ON(rxb == NULL);
1326
1327 rxq->queue[i] = NULL;
1328
1329 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1330 priv->hw_params.rx_buf_size,
1331 PCI_DMA_FROMDEVICE);
1332 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1333
1334 /* Reclaim a command buffer only if this packet is a response
1335 * to a (driver-originated) command.
1336 * If the packet (e.g. Rx frame) originated from uCode,
1337 * there is no command buffer to reclaim.
1338 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1339 * but apparently a few don't get set; catch them here. */
1340 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1341 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1342 (pkt->hdr.cmd != REPLY_RX) &&
1343 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1344 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1345 (pkt->hdr.cmd != REPLY_TX);
1346
1347 /* Based on type of command response or notification,
1348 * handle those that need handling via function in
1349 * rx_handlers table. See iwl4965_setup_rx_handlers() */
1350 if (priv->rx_handlers[pkt->hdr.cmd]) {
1351 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1352 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1353 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1354 } else {
1355 /* No handling needed */
1356 IWL_DEBUG(IWL_DL_RX,
1357 "r %d i %d No handler needed for %s, 0x%02x\n",
1358 r, i, get_cmd_string(pkt->hdr.cmd),
1359 pkt->hdr.cmd);
1360 }
1361
1362 if (reclaim) {
1363 /* Invoke any callbacks, transfer the skb to caller, and
1364 * fire off the (possibly) blocking iwl_send_cmd()
1365 * as we reclaim the driver command queue */
1366 if (rxb && rxb->skb)
1367 iwl_tx_cmd_complete(priv, rxb);
1368 else
1369 IWL_WARNING("Claim null rxb?\n");
1370 }
1371
1372 /* For now we just don't re-use anything. We can tweak this
1373 * later to try and re-use notification packets and SKBs that
1374 * fail to Rx correctly */
1375 if (rxb->skb != NULL) {
1376 priv->alloc_rxb_skb--;
1377 dev_kfree_skb_any(rxb->skb);
1378 rxb->skb = NULL;
1379 }
1380
1381 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
1382 priv->hw_params.rx_buf_size,
1383 PCI_DMA_FROMDEVICE);
1384 spin_lock_irqsave(&rxq->lock, flags);
1385 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1386 spin_unlock_irqrestore(&rxq->lock, flags);
1387 i = (i + 1) & RX_QUEUE_MASK;
1388 /* If there are a lot of unused frames,
1389 * restock the Rx queue so ucode wont assert. */
1390 if (fill_rx) {
1391 count++;
1392 if (count >= 8) {
1393 priv->rxq.read = i;
1394 __iwl_rx_replenish(priv);
1395 count = 0;
1396 }
1397 }
1398 }
1399
1400 /* Backtrack one entry */
1401 priv->rxq.read = i;
1402 iwl_rx_queue_restock(priv);
1403 }
1404
1405 #ifdef CONFIG_IWLWIFI_DEBUG
1406 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
1407 {
1408 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1409 DECLARE_MAC_BUF(mac);
1410
1411 IWL_DEBUG_RADIO("RX CONFIG:\n");
1412 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1413 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1414 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1415 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1416 le32_to_cpu(rxon->filter_flags));
1417 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1418 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1419 rxon->ofdm_basic_rates);
1420 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1421 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
1422 print_mac(mac, rxon->node_addr));
1423 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
1424 print_mac(mac, rxon->bssid_addr));
1425 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1426 }
1427 #endif
1428
1429 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
1430 {
1431 IWL_DEBUG_ISR("Enabling interrupts\n");
1432 set_bit(STATUS_INT_ENABLED, &priv->status);
1433 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1434 }
1435
1436 /* call this function to flush any scheduled tasklet */
1437 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1438 {
1439 /* wait to make sure we flush pedding tasklet*/
1440 synchronize_irq(priv->pci_dev->irq);
1441 tasklet_kill(&priv->irq_tasklet);
1442 }
1443
1444 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
1445 {
1446 clear_bit(STATUS_INT_ENABLED, &priv->status);
1447
1448 /* disable interrupts from uCode/NIC to host */
1449 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1450
1451 /* acknowledge/clear/reset any interrupts still pending
1452 * from uCode or flow handler (Rx/Tx DMA) */
1453 iwl_write32(priv, CSR_INT, 0xffffffff);
1454 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1455 IWL_DEBUG_ISR("Disabled interrupts\n");
1456 }
1457
1458
1459 /**
1460 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
1461 */
1462 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
1463 {
1464 /* Set the FW error flag -- cleared on iwl4965_down */
1465 set_bit(STATUS_FW_ERROR, &priv->status);
1466
1467 /* Cancel currently queued command. */
1468 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1469
1470 #ifdef CONFIG_IWLWIFI_DEBUG
1471 if (priv->debug_level & IWL_DL_FW_ERRORS) {
1472 iwl_dump_nic_error_log(priv);
1473 iwl_dump_nic_event_log(priv);
1474 iwl4965_print_rx_config_cmd(priv);
1475 }
1476 #endif
1477
1478 wake_up_interruptible(&priv->wait_command_queue);
1479
1480 /* Keep the restart process from trying to send host
1481 * commands by clearing the INIT status bit */
1482 clear_bit(STATUS_READY, &priv->status);
1483
1484 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1485 IWL_DEBUG(IWL_DL_FW_ERRORS,
1486 "Restarting adapter due to uCode error.\n");
1487
1488 if (iwl_is_associated(priv)) {
1489 memcpy(&priv->recovery_rxon, &priv->active_rxon,
1490 sizeof(priv->recovery_rxon));
1491 priv->error_recovering = 1;
1492 }
1493 if (priv->cfg->mod_params->restart_fw)
1494 queue_work(priv->workqueue, &priv->restart);
1495 }
1496 }
1497
1498 static void iwl4965_error_recovery(struct iwl_priv *priv)
1499 {
1500 unsigned long flags;
1501
1502 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1503 sizeof(priv->staging_rxon));
1504 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1505 iwl4965_commit_rxon(priv);
1506
1507 iwl_rxon_add_station(priv, priv->bssid, 1);
1508
1509 spin_lock_irqsave(&priv->lock, flags);
1510 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1511 priv->error_recovering = 0;
1512 spin_unlock_irqrestore(&priv->lock, flags);
1513 }
1514
1515 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
1516 {
1517 u32 inta, handled = 0;
1518 u32 inta_fh;
1519 unsigned long flags;
1520 #ifdef CONFIG_IWLWIFI_DEBUG
1521 u32 inta_mask;
1522 #endif
1523
1524 spin_lock_irqsave(&priv->lock, flags);
1525
1526 /* Ack/clear/reset pending uCode interrupts.
1527 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1528 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1529 inta = iwl_read32(priv, CSR_INT);
1530 iwl_write32(priv, CSR_INT, inta);
1531
1532 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1533 * Any new interrupts that happen after this, either while we're
1534 * in this tasklet, or later, will show up in next ISR/tasklet. */
1535 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1536 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1537
1538 #ifdef CONFIG_IWLWIFI_DEBUG
1539 if (priv->debug_level & IWL_DL_ISR) {
1540 /* just for debug */
1541 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1542 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1543 inta, inta_mask, inta_fh);
1544 }
1545 #endif
1546
1547 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1548 * atomic, make sure that inta covers all the interrupts that
1549 * we've discovered, even if FH interrupt came in just after
1550 * reading CSR_INT. */
1551 if (inta_fh & CSR49_FH_INT_RX_MASK)
1552 inta |= CSR_INT_BIT_FH_RX;
1553 if (inta_fh & CSR49_FH_INT_TX_MASK)
1554 inta |= CSR_INT_BIT_FH_TX;
1555
1556 /* Now service all interrupt bits discovered above. */
1557 if (inta & CSR_INT_BIT_HW_ERR) {
1558 IWL_ERROR("Microcode HW error detected. Restarting.\n");
1559
1560 /* Tell the device to stop sending interrupts */
1561 iwl4965_disable_interrupts(priv);
1562
1563 iwl4965_irq_handle_error(priv);
1564
1565 handled |= CSR_INT_BIT_HW_ERR;
1566
1567 spin_unlock_irqrestore(&priv->lock, flags);
1568
1569 return;
1570 }
1571
1572 #ifdef CONFIG_IWLWIFI_DEBUG
1573 if (priv->debug_level & (IWL_DL_ISR)) {
1574 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1575 if (inta & CSR_INT_BIT_SCD)
1576 IWL_DEBUG_ISR("Scheduler finished to transmit "
1577 "the frame/frames.\n");
1578
1579 /* Alive notification via Rx interrupt will do the real work */
1580 if (inta & CSR_INT_BIT_ALIVE)
1581 IWL_DEBUG_ISR("Alive interrupt\n");
1582 }
1583 #endif
1584 /* Safely ignore these bits for debug checks below */
1585 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1586
1587 /* HW RF KILL switch toggled */
1588 if (inta & CSR_INT_BIT_RF_KILL) {
1589 int hw_rf_kill = 0;
1590 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1591 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1592 hw_rf_kill = 1;
1593
1594 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1595 hw_rf_kill ? "disable radio":"enable radio");
1596
1597 /* driver only loads ucode once setting the interface up.
1598 * the driver as well won't allow loading if RFKILL is set
1599 * therefore no need to restart the driver from this handler
1600 */
1601 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
1602 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1603
1604 handled |= CSR_INT_BIT_RF_KILL;
1605 }
1606
1607 /* Chip got too hot and stopped itself */
1608 if (inta & CSR_INT_BIT_CT_KILL) {
1609 IWL_ERROR("Microcode CT kill error detected.\n");
1610 handled |= CSR_INT_BIT_CT_KILL;
1611 }
1612
1613 /* Error detected by uCode */
1614 if (inta & CSR_INT_BIT_SW_ERR) {
1615 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
1616 inta);
1617 iwl4965_irq_handle_error(priv);
1618 handled |= CSR_INT_BIT_SW_ERR;
1619 }
1620
1621 /* uCode wakes up after power-down sleep */
1622 if (inta & CSR_INT_BIT_WAKEUP) {
1623 IWL_DEBUG_ISR("Wakeup interrupt\n");
1624 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1625 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1626 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1627 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1628 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1629 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1630 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1631
1632 handled |= CSR_INT_BIT_WAKEUP;
1633 }
1634
1635 /* All uCode command responses, including Tx command responses,
1636 * Rx "responses" (frame-received notification), and other
1637 * notifications from uCode come through here*/
1638 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1639 iwl_rx_handle(priv);
1640 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1641 }
1642
1643 if (inta & CSR_INT_BIT_FH_TX) {
1644 IWL_DEBUG_ISR("Tx interrupt\n");
1645 handled |= CSR_INT_BIT_FH_TX;
1646 /* FH finished to write, send event */
1647 priv->ucode_write_complete = 1;
1648 wake_up_interruptible(&priv->wait_command_queue);
1649 }
1650
1651 if (inta & ~handled)
1652 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1653
1654 if (inta & ~CSR_INI_SET_MASK) {
1655 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1656 inta & ~CSR_INI_SET_MASK);
1657 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
1658 }
1659
1660 /* Re-enable all interrupts */
1661 /* only Re-enable if diabled by irq */
1662 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1663 iwl4965_enable_interrupts(priv);
1664
1665 #ifdef CONFIG_IWLWIFI_DEBUG
1666 if (priv->debug_level & (IWL_DL_ISR)) {
1667 inta = iwl_read32(priv, CSR_INT);
1668 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1669 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1670 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1671 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1672 }
1673 #endif
1674 spin_unlock_irqrestore(&priv->lock, flags);
1675 }
1676
1677 static irqreturn_t iwl4965_isr(int irq, void *data)
1678 {
1679 struct iwl_priv *priv = data;
1680 u32 inta, inta_mask;
1681 u32 inta_fh;
1682 if (!priv)
1683 return IRQ_NONE;
1684
1685 spin_lock(&priv->lock);
1686
1687 /* Disable (but don't clear!) interrupts here to avoid
1688 * back-to-back ISRs and sporadic interrupts from our NIC.
1689 * If we have something to service, the tasklet will re-enable ints.
1690 * If we *don't* have something, we'll re-enable before leaving here. */
1691 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
1692 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1693
1694 /* Discover which interrupts are active/pending */
1695 inta = iwl_read32(priv, CSR_INT);
1696 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1697
1698 /* Ignore interrupt if there's nothing in NIC to service.
1699 * This may be due to IRQ shared with another device,
1700 * or due to sporadic interrupts thrown from our NIC. */
1701 if (!inta && !inta_fh) {
1702 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1703 goto none;
1704 }
1705
1706 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1707 /* Hardware disappeared. It might have already raised
1708 * an interrupt */
1709 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1710 goto unplugged;
1711 }
1712
1713 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1714 inta, inta_mask, inta_fh);
1715
1716 inta &= ~CSR_INT_BIT_SCD;
1717
1718 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
1719 if (likely(inta || inta_fh))
1720 tasklet_schedule(&priv->irq_tasklet);
1721
1722 unplugged:
1723 spin_unlock(&priv->lock);
1724 return IRQ_HANDLED;
1725
1726 none:
1727 /* re-enable interrupts here since we don't have anything to service. */
1728 /* only Re-enable if diabled by irq */
1729 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1730 iwl4965_enable_interrupts(priv);
1731 spin_unlock(&priv->lock);
1732 return IRQ_NONE;
1733 }
1734
1735 /******************************************************************************
1736 *
1737 * uCode download functions
1738 *
1739 ******************************************************************************/
1740
1741 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
1742 {
1743 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1744 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1745 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1746 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1747 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1748 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1749 }
1750
1751 static void iwl4965_nic_start(struct iwl_priv *priv)
1752 {
1753 /* Remove all resets to allow NIC to operate */
1754 iwl_write32(priv, CSR_RESET, 0);
1755 }
1756
1757
1758 /**
1759 * iwl4965_read_ucode - Read uCode images from disk file.
1760 *
1761 * Copy into buffers for card to fetch via bus-mastering
1762 */
1763 static int iwl4965_read_ucode(struct iwl_priv *priv)
1764 {
1765 struct iwl_ucode *ucode;
1766 int ret;
1767 const struct firmware *ucode_raw;
1768 const char *name = priv->cfg->fw_name;
1769 u8 *src;
1770 size_t len;
1771 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
1772
1773 /* Ask kernel firmware_class module to get the boot firmware off disk.
1774 * request_firmware() is synchronous, file is in memory on return. */
1775 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
1776 if (ret < 0) {
1777 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1778 name, ret);
1779 goto error;
1780 }
1781
1782 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1783 name, ucode_raw->size);
1784
1785 /* Make sure that we got at least our header! */
1786 if (ucode_raw->size < sizeof(*ucode)) {
1787 IWL_ERROR("File size way too small!\n");
1788 ret = -EINVAL;
1789 goto err_release;
1790 }
1791
1792 /* Data from ucode file: header followed by uCode images */
1793 ucode = (void *)ucode_raw->data;
1794
1795 ver = le32_to_cpu(ucode->ver);
1796 inst_size = le32_to_cpu(ucode->inst_size);
1797 data_size = le32_to_cpu(ucode->data_size);
1798 init_size = le32_to_cpu(ucode->init_size);
1799 init_data_size = le32_to_cpu(ucode->init_data_size);
1800 boot_size = le32_to_cpu(ucode->boot_size);
1801
1802 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
1803 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1804 inst_size);
1805 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1806 data_size);
1807 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1808 init_size);
1809 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1810 init_data_size);
1811 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1812 boot_size);
1813
1814 /* Verify size of file vs. image size info in file's header */
1815 if (ucode_raw->size < sizeof(*ucode) +
1816 inst_size + data_size + init_size +
1817 init_data_size + boot_size) {
1818
1819 IWL_DEBUG_INFO("uCode file size %d too small\n",
1820 (int)ucode_raw->size);
1821 ret = -EINVAL;
1822 goto err_release;
1823 }
1824
1825 /* Verify that uCode images will fit in card's SRAM */
1826 if (inst_size > priv->hw_params.max_inst_size) {
1827 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1828 inst_size);
1829 ret = -EINVAL;
1830 goto err_release;
1831 }
1832
1833 if (data_size > priv->hw_params.max_data_size) {
1834 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1835 data_size);
1836 ret = -EINVAL;
1837 goto err_release;
1838 }
1839 if (init_size > priv->hw_params.max_inst_size) {
1840 IWL_DEBUG_INFO
1841 ("uCode init instr len %d too large to fit in\n",
1842 init_size);
1843 ret = -EINVAL;
1844 goto err_release;
1845 }
1846 if (init_data_size > priv->hw_params.max_data_size) {
1847 IWL_DEBUG_INFO
1848 ("uCode init data len %d too large to fit in\n",
1849 init_data_size);
1850 ret = -EINVAL;
1851 goto err_release;
1852 }
1853 if (boot_size > priv->hw_params.max_bsm_size) {
1854 IWL_DEBUG_INFO
1855 ("uCode boot instr len %d too large to fit in\n",
1856 boot_size);
1857 ret = -EINVAL;
1858 goto err_release;
1859 }
1860
1861 /* Allocate ucode buffers for card's bus-master loading ... */
1862
1863 /* Runtime instructions and 2 copies of data:
1864 * 1) unmodified from disk
1865 * 2) backup cache for save/restore during power-downs */
1866 priv->ucode_code.len = inst_size;
1867 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1868
1869 priv->ucode_data.len = data_size;
1870 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1871
1872 priv->ucode_data_backup.len = data_size;
1873 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1874
1875 /* Initialization instructions and data */
1876 if (init_size && init_data_size) {
1877 priv->ucode_init.len = init_size;
1878 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1879
1880 priv->ucode_init_data.len = init_data_size;
1881 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1882
1883 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1884 goto err_pci_alloc;
1885 }
1886
1887 /* Bootstrap (instructions only, no data) */
1888 if (boot_size) {
1889 priv->ucode_boot.len = boot_size;
1890 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1891
1892 if (!priv->ucode_boot.v_addr)
1893 goto err_pci_alloc;
1894 }
1895
1896 /* Copy images into buffers for card's bus-master reads ... */
1897
1898 /* Runtime instructions (first block of data in file) */
1899 src = &ucode->data[0];
1900 len = priv->ucode_code.len;
1901 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1902 memcpy(priv->ucode_code.v_addr, src, len);
1903 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1904 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1905
1906 /* Runtime data (2nd block)
1907 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
1908 src = &ucode->data[inst_size];
1909 len = priv->ucode_data.len;
1910 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1911 memcpy(priv->ucode_data.v_addr, src, len);
1912 memcpy(priv->ucode_data_backup.v_addr, src, len);
1913
1914 /* Initialization instructions (3rd block) */
1915 if (init_size) {
1916 src = &ucode->data[inst_size + data_size];
1917 len = priv->ucode_init.len;
1918 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1919 len);
1920 memcpy(priv->ucode_init.v_addr, src, len);
1921 }
1922
1923 /* Initialization data (4th block) */
1924 if (init_data_size) {
1925 src = &ucode->data[inst_size + data_size + init_size];
1926 len = priv->ucode_init_data.len;
1927 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1928 len);
1929 memcpy(priv->ucode_init_data.v_addr, src, len);
1930 }
1931
1932 /* Bootstrap instructions (5th block) */
1933 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1934 len = priv->ucode_boot.len;
1935 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1936 memcpy(priv->ucode_boot.v_addr, src, len);
1937
1938 /* We have our copies now, allow OS release its copies */
1939 release_firmware(ucode_raw);
1940 return 0;
1941
1942 err_pci_alloc:
1943 IWL_ERROR("failed to allocate pci memory\n");
1944 ret = -ENOMEM;
1945 iwl4965_dealloc_ucode_pci(priv);
1946
1947 err_release:
1948 release_firmware(ucode_raw);
1949
1950 error:
1951 return ret;
1952 }
1953
1954 /**
1955 * iwl_alive_start - called after REPLY_ALIVE notification received
1956 * from protocol/runtime uCode (initialization uCode's
1957 * Alive gets handled by iwl_init_alive_start()).
1958 */
1959 static void iwl_alive_start(struct iwl_priv *priv)
1960 {
1961 int ret = 0;
1962
1963 IWL_DEBUG_INFO("Runtime Alive received.\n");
1964
1965 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
1966 /* We had an error bringing up the hardware, so take it
1967 * all the way back down so we can try again */
1968 IWL_DEBUG_INFO("Alive failed.\n");
1969 goto restart;
1970 }
1971
1972 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1973 * This is a paranoid check, because we would not have gotten the
1974 * "runtime" alive if code weren't properly loaded. */
1975 if (iwl_verify_ucode(priv)) {
1976 /* Runtime instruction load was bad;
1977 * take it all the way back down so we can try again */
1978 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
1979 goto restart;
1980 }
1981
1982 iwl_clear_stations_table(priv);
1983 ret = priv->cfg->ops->lib->alive_notify(priv);
1984 if (ret) {
1985 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
1986 ret);
1987 goto restart;
1988 }
1989
1990 /* After the ALIVE response, we can send host commands to 4965 uCode */
1991 set_bit(STATUS_ALIVE, &priv->status);
1992
1993 if (iwl_is_rfkill(priv))
1994 return;
1995
1996 ieee80211_wake_queues(priv->hw);
1997
1998 priv->active_rate = priv->rates_mask;
1999 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2000
2001 if (iwl_is_associated(priv)) {
2002 struct iwl_rxon_cmd *active_rxon =
2003 (struct iwl_rxon_cmd *)&priv->active_rxon;
2004
2005 memcpy(&priv->staging_rxon, &priv->active_rxon,
2006 sizeof(priv->staging_rxon));
2007 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2008 } else {
2009 /* Initialize our rx_config data */
2010 iwl4965_connection_init_rx_config(priv);
2011 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2012 }
2013
2014 /* Configure Bluetooth device coexistence support */
2015 iwl4965_send_bt_config(priv);
2016
2017 iwl_reset_run_time_calib(priv);
2018
2019 /* Configure the adapter for unassociated operation */
2020 iwl4965_commit_rxon(priv);
2021
2022 /* At this point, the NIC is initialized and operational */
2023 iwl_rf_kill_ct_config(priv);
2024
2025 iwl_leds_register(priv);
2026
2027 IWL_DEBUG_INFO("ALIVE processing complete.\n");
2028 set_bit(STATUS_READY, &priv->status);
2029 wake_up_interruptible(&priv->wait_command_queue);
2030
2031 if (priv->error_recovering)
2032 iwl4965_error_recovery(priv);
2033
2034 iwl_power_update_mode(priv, 1);
2035 ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2036
2037 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2038 iwl4965_set_mode(priv, priv->iw_mode);
2039
2040 return;
2041
2042 restart:
2043 queue_work(priv->workqueue, &priv->restart);
2044 }
2045
2046 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2047
2048 static void __iwl4965_down(struct iwl_priv *priv)
2049 {
2050 unsigned long flags;
2051 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2052
2053 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2054
2055 if (!exit_pending)
2056 set_bit(STATUS_EXIT_PENDING, &priv->status);
2057
2058 iwl_leds_unregister(priv);
2059
2060 iwl_clear_stations_table(priv);
2061
2062 /* Unblock any waiting calls */
2063 wake_up_interruptible_all(&priv->wait_command_queue);
2064
2065 /* Wipe out the EXIT_PENDING status bit if we are not actually
2066 * exiting the module */
2067 if (!exit_pending)
2068 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2069
2070 /* stop and reset the on-board processor */
2071 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2072
2073 /* tell the device to stop sending interrupts */
2074 spin_lock_irqsave(&priv->lock, flags);
2075 iwl4965_disable_interrupts(priv);
2076 spin_unlock_irqrestore(&priv->lock, flags);
2077 iwl_synchronize_irq(priv);
2078
2079 if (priv->mac80211_registered)
2080 ieee80211_stop_queues(priv->hw);
2081
2082 /* If we have not previously called iwl4965_init() then
2083 * clear all bits but the RF Kill and SUSPEND bits and return */
2084 if (!iwl_is_init(priv)) {
2085 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2086 STATUS_RF_KILL_HW |
2087 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2088 STATUS_RF_KILL_SW |
2089 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2090 STATUS_GEO_CONFIGURED |
2091 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2092 STATUS_IN_SUSPEND |
2093 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2094 STATUS_EXIT_PENDING;
2095 goto exit;
2096 }
2097
2098 /* ...otherwise clear out all the status bits but the RF Kill and
2099 * SUSPEND bits and continue taking the NIC down. */
2100 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2101 STATUS_RF_KILL_HW |
2102 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2103 STATUS_RF_KILL_SW |
2104 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2105 STATUS_GEO_CONFIGURED |
2106 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2107 STATUS_IN_SUSPEND |
2108 test_bit(STATUS_FW_ERROR, &priv->status) <<
2109 STATUS_FW_ERROR |
2110 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2111 STATUS_EXIT_PENDING;
2112
2113 spin_lock_irqsave(&priv->lock, flags);
2114 iwl_clear_bit(priv, CSR_GP_CNTRL,
2115 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2116 spin_unlock_irqrestore(&priv->lock, flags);
2117
2118 iwl_txq_ctx_stop(priv);
2119 iwl_rxq_stop(priv);
2120
2121 spin_lock_irqsave(&priv->lock, flags);
2122 if (!iwl_grab_nic_access(priv)) {
2123 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2124 APMG_CLK_VAL_DMA_CLK_RQT);
2125 iwl_release_nic_access(priv);
2126 }
2127 spin_unlock_irqrestore(&priv->lock, flags);
2128
2129 udelay(5);
2130
2131 /* FIXME: apm_ops.suspend(priv) */
2132 priv->cfg->ops->lib->apm_ops.reset(priv);
2133 priv->cfg->ops->lib->free_shared_mem(priv);
2134
2135 exit:
2136 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2137
2138 if (priv->ibss_beacon)
2139 dev_kfree_skb(priv->ibss_beacon);
2140 priv->ibss_beacon = NULL;
2141
2142 /* clear out any free frames */
2143 iwl_clear_free_frames(priv);
2144 }
2145
2146 static void iwl4965_down(struct iwl_priv *priv)
2147 {
2148 mutex_lock(&priv->mutex);
2149 __iwl4965_down(priv);
2150 mutex_unlock(&priv->mutex);
2151
2152 iwl_cancel_deferred_work(priv);
2153 }
2154
2155 #define MAX_HW_RESTARTS 5
2156
2157 static int __iwl4965_up(struct iwl_priv *priv)
2158 {
2159 int i;
2160 int ret;
2161
2162 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2163 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2164 return -EIO;
2165 }
2166
2167 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2168 IWL_ERROR("ucode not available for device bringup\n");
2169 return -EIO;
2170 }
2171
2172 /* If platform's RF_KILL switch is NOT set to KILL */
2173 if (iwl_read32(priv, CSR_GP_CNTRL) &
2174 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2175 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2176 else
2177 set_bit(STATUS_RF_KILL_HW, &priv->status);
2178
2179 if (!test_bit(STATUS_IN_SUSPEND, &priv->status) &&
2180 iwl_is_rfkill(priv)) {
2181 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2182 test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2183 return -ENODEV;
2184 }
2185
2186 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2187
2188 ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
2189 if (ret) {
2190 IWL_ERROR("Unable to allocate shared memory\n");
2191 return ret;
2192 }
2193
2194 ret = iwl_hw_nic_init(priv);
2195 if (ret) {
2196 IWL_ERROR("Unable to init nic\n");
2197 return ret;
2198 }
2199
2200 /* make sure rfkill handshake bits are cleared */
2201 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2202 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2203 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2204
2205 /* clear (again), then enable host interrupts */
2206 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2207 iwl4965_enable_interrupts(priv);
2208
2209 /* really make sure rfkill handshake bits are cleared */
2210 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2211 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2212
2213 /* Copy original ucode data image from disk into backup cache.
2214 * This will be used to initialize the on-board processor's
2215 * data SRAM for a clean start when the runtime program first loads. */
2216 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2217 priv->ucode_data.len);
2218
2219 /* We return success when we resume from suspend and rf_kill is on. */
2220 if (test_bit(STATUS_RF_KILL_HW, &priv->status) ||
2221 test_bit(STATUS_RF_KILL_SW, &priv->status))
2222 return 0;
2223
2224 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2225
2226 iwl_clear_stations_table(priv);
2227
2228 /* load bootstrap state machine,
2229 * load bootstrap program into processor's memory,
2230 * prepare to load the "initialize" uCode */
2231 ret = priv->cfg->ops->lib->load_ucode(priv);
2232
2233 if (ret) {
2234 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2235 continue;
2236 }
2237
2238 /* Clear out the uCode error bit if it is set */
2239 clear_bit(STATUS_FW_ERROR, &priv->status);
2240
2241 /* start card; "initialize" will load runtime ucode */
2242 iwl4965_nic_start(priv);
2243
2244 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2245
2246 return 0;
2247 }
2248
2249 set_bit(STATUS_EXIT_PENDING, &priv->status);
2250 __iwl4965_down(priv);
2251 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2252
2253 /* tried to restart and config the device for as long as our
2254 * patience could withstand */
2255 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2256 return -EIO;
2257 }
2258
2259
2260 /*****************************************************************************
2261 *
2262 * Workqueue callbacks
2263 *
2264 *****************************************************************************/
2265
2266 static void iwl_bg_init_alive_start(struct work_struct *data)
2267 {
2268 struct iwl_priv *priv =
2269 container_of(data, struct iwl_priv, init_alive_start.work);
2270
2271 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2272 return;
2273
2274 mutex_lock(&priv->mutex);
2275 priv->cfg->ops->lib->init_alive_start(priv);
2276 mutex_unlock(&priv->mutex);
2277 }
2278
2279 static void iwl_bg_alive_start(struct work_struct *data)
2280 {
2281 struct iwl_priv *priv =
2282 container_of(data, struct iwl_priv, alive_start.work);
2283
2284 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2285 return;
2286
2287 mutex_lock(&priv->mutex);
2288 iwl_alive_start(priv);
2289 mutex_unlock(&priv->mutex);
2290 }
2291
2292 static void iwl4965_bg_rf_kill(struct work_struct *work)
2293 {
2294 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2295
2296 wake_up_interruptible(&priv->wait_command_queue);
2297
2298 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2299 return;
2300
2301 mutex_lock(&priv->mutex);
2302
2303 if (!iwl_is_rfkill(priv)) {
2304 IWL_DEBUG(IWL_DL_RF_KILL,
2305 "HW and/or SW RF Kill no longer active, restarting "
2306 "device\n");
2307 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2308 queue_work(priv->workqueue, &priv->restart);
2309 } else {
2310 /* make sure mac80211 stop sending Tx frame */
2311 if (priv->mac80211_registered)
2312 ieee80211_stop_queues(priv->hw);
2313
2314 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2315 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2316 "disabled by SW switch\n");
2317 else
2318 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2319 "Kill switch must be turned off for "
2320 "wireless networking to work.\n");
2321 }
2322 mutex_unlock(&priv->mutex);
2323 iwl_rfkill_set_hw_state(priv);
2324 }
2325
2326 static void iwl4965_bg_set_monitor(struct work_struct *work)
2327 {
2328 struct iwl_priv *priv = container_of(work,
2329 struct iwl_priv, set_monitor);
2330 int ret;
2331
2332 IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
2333
2334 mutex_lock(&priv->mutex);
2335
2336 ret = iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR);
2337
2338 if (ret) {
2339 if (ret == -EAGAIN)
2340 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
2341 else
2342 IWL_ERROR("iwl4965_set_mode() failed ret = %d\n", ret);
2343 }
2344
2345 mutex_unlock(&priv->mutex);
2346 }
2347
2348 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2349 {
2350 struct iwl_priv *priv = container_of(work, struct iwl_priv,
2351 run_time_calib_work);
2352
2353 mutex_lock(&priv->mutex);
2354
2355 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2356 test_bit(STATUS_SCANNING, &priv->status)) {
2357 mutex_unlock(&priv->mutex);
2358 return;
2359 }
2360
2361 if (priv->start_calib) {
2362 iwl_chain_noise_calibration(priv, &priv->statistics);
2363
2364 iwl_sensitivity_calibration(priv, &priv->statistics);
2365 }
2366
2367 mutex_unlock(&priv->mutex);
2368 return;
2369 }
2370
2371 static void iwl4965_bg_up(struct work_struct *data)
2372 {
2373 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2374
2375 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2376 return;
2377
2378 mutex_lock(&priv->mutex);
2379 __iwl4965_up(priv);
2380 mutex_unlock(&priv->mutex);
2381 iwl_rfkill_set_hw_state(priv);
2382 }
2383
2384 static void iwl4965_bg_restart(struct work_struct *data)
2385 {
2386 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2387
2388 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2389 return;
2390
2391 iwl4965_down(priv);
2392 queue_work(priv->workqueue, &priv->up);
2393 }
2394
2395 static void iwl4965_bg_rx_replenish(struct work_struct *data)
2396 {
2397 struct iwl_priv *priv =
2398 container_of(data, struct iwl_priv, rx_replenish);
2399
2400 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2401 return;
2402
2403 mutex_lock(&priv->mutex);
2404 iwl_rx_replenish(priv);
2405 mutex_unlock(&priv->mutex);
2406 }
2407
2408 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2409
2410 static void iwl4965_post_associate(struct iwl_priv *priv)
2411 {
2412 struct ieee80211_conf *conf = NULL;
2413 int ret = 0;
2414 DECLARE_MAC_BUF(mac);
2415 unsigned long flags;
2416
2417 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2418 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
2419 return;
2420 }
2421
2422 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
2423 priv->assoc_id,
2424 print_mac(mac, priv->active_rxon.bssid_addr));
2425
2426
2427 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2428 return;
2429
2430
2431 if (!priv->vif || !priv->is_open)
2432 return;
2433
2434 iwl_scan_cancel_timeout(priv, 200);
2435
2436 conf = ieee80211_get_hw_conf(priv->hw);
2437
2438 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2439 iwl4965_commit_rxon(priv);
2440
2441 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2442 iwl4965_setup_rxon_timing(priv);
2443 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2444 sizeof(priv->rxon_timing), &priv->rxon_timing);
2445 if (ret)
2446 IWL_WARNING("REPLY_RXON_TIMING failed - "
2447 "Attempting to continue.\n");
2448
2449 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2450
2451 if (priv->current_ht_config.is_ht)
2452 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2453
2454 iwl_set_rxon_chain(priv);
2455 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2456
2457 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2458 priv->assoc_id, priv->beacon_int);
2459
2460 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2461 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2462 else
2463 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2464
2465 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2466 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2467 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2468 else
2469 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2470
2471 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2472 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2473
2474 }
2475
2476 iwl4965_commit_rxon(priv);
2477
2478 switch (priv->iw_mode) {
2479 case IEEE80211_IF_TYPE_STA:
2480 break;
2481
2482 case IEEE80211_IF_TYPE_IBSS:
2483
2484 /* assume default assoc id */
2485 priv->assoc_id = 1;
2486
2487 iwl_rxon_add_station(priv, priv->bssid, 0);
2488 iwl4965_send_beacon_cmd(priv);
2489
2490 break;
2491
2492 default:
2493 IWL_ERROR("%s Should not be called in %d mode\n",
2494 __FUNCTION__, priv->iw_mode);
2495 break;
2496 }
2497
2498 /* Enable Rx differential gain and sensitivity calibrations */
2499 iwl_chain_noise_reset(priv);
2500 priv->start_calib = 1;
2501
2502 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2503 priv->assoc_station_added = 1;
2504
2505 spin_lock_irqsave(&priv->lock, flags);
2506 iwl_activate_qos(priv, 0);
2507 spin_unlock_irqrestore(&priv->lock, flags);
2508
2509 iwl_power_update_mode(priv, 0);
2510 /* we have just associated, don't start scan too early */
2511 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
2512 }
2513
2514 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
2515
2516 static void iwl_bg_scan_completed(struct work_struct *work)
2517 {
2518 struct iwl_priv *priv =
2519 container_of(work, struct iwl_priv, scan_completed);
2520
2521 IWL_DEBUG_SCAN("SCAN complete scan\n");
2522
2523 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2524 return;
2525
2526 if (test_bit(STATUS_CONF_PENDING, &priv->status))
2527 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
2528
2529 ieee80211_scan_completed(priv->hw);
2530
2531 /* Since setting the TXPOWER may have been deferred while
2532 * performing the scan, fire one off */
2533 mutex_lock(&priv->mutex);
2534 iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
2535 mutex_unlock(&priv->mutex);
2536 }
2537
2538 /*****************************************************************************
2539 *
2540 * mac80211 entry point functions
2541 *
2542 *****************************************************************************/
2543
2544 #define UCODE_READY_TIMEOUT (4 * HZ)
2545
2546 static int iwl4965_mac_start(struct ieee80211_hw *hw)
2547 {
2548 struct iwl_priv *priv = hw->priv;
2549 int ret;
2550
2551 IWL_DEBUG_MAC80211("enter\n");
2552
2553 if (pci_enable_device(priv->pci_dev)) {
2554 IWL_ERROR("Fail to pci_enable_device\n");
2555 return -ENODEV;
2556 }
2557 pci_restore_state(priv->pci_dev);
2558 pci_enable_msi(priv->pci_dev);
2559
2560 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
2561 DRV_NAME, priv);
2562 if (ret) {
2563 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2564 goto out_disable_msi;
2565 }
2566
2567 /* we should be verifying the device is ready to be opened */
2568 mutex_lock(&priv->mutex);
2569
2570 memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2571 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2572 * ucode filename and max sizes are card-specific. */
2573
2574 if (!priv->ucode_code.len) {
2575 ret = iwl4965_read_ucode(priv);
2576 if (ret) {
2577 IWL_ERROR("Could not read microcode: %d\n", ret);
2578 mutex_unlock(&priv->mutex);
2579 goto out_release_irq;
2580 }
2581 }
2582
2583 ret = __iwl4965_up(priv);
2584
2585 mutex_unlock(&priv->mutex);
2586
2587 iwl_rfkill_set_hw_state(priv);
2588
2589 if (ret)
2590 goto out_release_irq;
2591
2592 IWL_DEBUG_INFO("Start UP work done.\n");
2593
2594 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2595 return 0;
2596
2597 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2598 * mac80211 will not be run successfully. */
2599 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2600 test_bit(STATUS_READY, &priv->status),
2601 UCODE_READY_TIMEOUT);
2602 if (!ret) {
2603 if (!test_bit(STATUS_READY, &priv->status)) {
2604 IWL_ERROR("START_ALIVE timeout after %dms.\n",
2605 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2606 ret = -ETIMEDOUT;
2607 goto out_release_irq;
2608 }
2609 }
2610
2611 priv->is_open = 1;
2612 IWL_DEBUG_MAC80211("leave\n");
2613 return 0;
2614
2615 out_release_irq:
2616 free_irq(priv->pci_dev->irq, priv);
2617 out_disable_msi:
2618 pci_disable_msi(priv->pci_dev);
2619 pci_disable_device(priv->pci_dev);
2620 priv->is_open = 0;
2621 IWL_DEBUG_MAC80211("leave - failed\n");
2622 return ret;
2623 }
2624
2625 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
2626 {
2627 struct iwl_priv *priv = hw->priv;
2628
2629 IWL_DEBUG_MAC80211("enter\n");
2630
2631 if (!priv->is_open) {
2632 IWL_DEBUG_MAC80211("leave - skip\n");
2633 return;
2634 }
2635
2636 priv->is_open = 0;
2637
2638 if (iwl_is_ready_rf(priv)) {
2639 /* stop mac, cancel any scan request and clear
2640 * RXON_FILTER_ASSOC_MSK BIT
2641 */
2642 mutex_lock(&priv->mutex);
2643 iwl_scan_cancel_timeout(priv, 100);
2644 mutex_unlock(&priv->mutex);
2645 }
2646
2647 iwl4965_down(priv);
2648
2649 flush_workqueue(priv->workqueue);
2650 free_irq(priv->pci_dev->irq, priv);
2651 pci_disable_msi(priv->pci_dev);
2652 pci_save_state(priv->pci_dev);
2653 pci_disable_device(priv->pci_dev);
2654
2655 IWL_DEBUG_MAC80211("leave\n");
2656 }
2657
2658 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2659 {
2660 struct iwl_priv *priv = hw->priv;
2661
2662 IWL_DEBUG_MAC80211("enter\n");
2663
2664 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
2665 IWL_DEBUG_MAC80211("leave - monitor\n");
2666 dev_kfree_skb_any(skb);
2667 return 0;
2668 }
2669
2670 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2671 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2672
2673 if (iwl_tx_skb(priv, skb))
2674 dev_kfree_skb_any(skb);
2675
2676 IWL_DEBUG_MAC80211("leave\n");
2677 return 0;
2678 }
2679
2680 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
2681 struct ieee80211_if_init_conf *conf)
2682 {
2683 struct iwl_priv *priv = hw->priv;
2684 unsigned long flags;
2685 DECLARE_MAC_BUF(mac);
2686
2687 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2688
2689 if (priv->vif) {
2690 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2691 return -EOPNOTSUPP;
2692 }
2693
2694 spin_lock_irqsave(&priv->lock, flags);
2695 priv->vif = conf->vif;
2696
2697 spin_unlock_irqrestore(&priv->lock, flags);
2698
2699 mutex_lock(&priv->mutex);
2700
2701 if (conf->mac_addr) {
2702 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
2703 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2704 }
2705
2706 if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
2707 /* we are not ready, will run again when ready */
2708 set_bit(STATUS_MODE_PENDING, &priv->status);
2709
2710 mutex_unlock(&priv->mutex);
2711
2712 IWL_DEBUG_MAC80211("leave\n");
2713 return 0;
2714 }
2715
2716 /**
2717 * iwl4965_mac_config - mac80211 config callback
2718 *
2719 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2720 * be set inappropriately and the driver currently sets the hardware up to
2721 * use it whenever needed.
2722 */
2723 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
2724 {
2725 struct iwl_priv *priv = hw->priv;
2726 const struct iwl_channel_info *ch_info;
2727 unsigned long flags;
2728 int ret = 0;
2729 u16 channel;
2730
2731 mutex_lock(&priv->mutex);
2732 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2733
2734 priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
2735
2736 if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2737 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2738 goto out;
2739 }
2740
2741 if (!conf->radio_enabled)
2742 iwl_radio_kill_sw_disable_radio(priv);
2743
2744 if (!iwl_is_ready(priv)) {
2745 IWL_DEBUG_MAC80211("leave - not ready\n");
2746 ret = -EIO;
2747 goto out;
2748 }
2749
2750 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2751 test_bit(STATUS_SCANNING, &priv->status))) {
2752 IWL_DEBUG_MAC80211("leave - scanning\n");
2753 set_bit(STATUS_CONF_PENDING, &priv->status);
2754 mutex_unlock(&priv->mutex);
2755 return 0;
2756 }
2757
2758 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2759 ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2760 if (!is_channel_valid(ch_info)) {
2761 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2762 ret = -EINVAL;
2763 goto out;
2764 }
2765
2766 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
2767 !is_channel_ibss(ch_info)) {
2768 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2769 conf->channel->hw_value, conf->channel->band);
2770 ret = -EINVAL;
2771 goto out;
2772 }
2773
2774 spin_lock_irqsave(&priv->lock, flags);
2775
2776 /* if we are switching from ht to 2.4 clear flags
2777 * from any ht related info since 2.4 does not
2778 * support ht */
2779 if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2780 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2781 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2782 #endif
2783 )
2784 priv->staging_rxon.flags = 0;
2785
2786 iwl_set_rxon_channel(priv, conf->channel->band, channel);
2787
2788 iwl_set_flags_for_band(priv, conf->channel->band);
2789
2790 /* The list of supported rates and rate mask can be different
2791 * for each band; since the band may have changed, reset
2792 * the rate mask to what mac80211 lists */
2793 iwl4965_set_rate(priv);
2794
2795 spin_unlock_irqrestore(&priv->lock, flags);
2796
2797 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2798 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2799 iwl4965_hw_channel_switch(priv, conf->channel);
2800 goto out;
2801 }
2802 #endif
2803
2804 if (!conf->radio_enabled) {
2805 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2806 goto out;
2807 }
2808
2809 if (iwl_is_rfkill(priv)) {
2810 IWL_DEBUG_MAC80211("leave - RF kill\n");
2811 ret = -EIO;
2812 goto out;
2813 }
2814
2815 IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2816 priv->tx_power_user_lmt, conf->power_level);
2817
2818 iwl_set_tx_power(priv, conf->power_level, false);
2819
2820 iwl4965_set_rate(priv);
2821
2822 if (memcmp(&priv->active_rxon,
2823 &priv->staging_rxon, sizeof(priv->staging_rxon)))
2824 iwl4965_commit_rxon(priv);
2825 else
2826 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2827
2828 IWL_DEBUG_MAC80211("leave\n");
2829
2830 out:
2831 clear_bit(STATUS_CONF_PENDING, &priv->status);
2832 mutex_unlock(&priv->mutex);
2833 return ret;
2834 }
2835
2836 static void iwl4965_config_ap(struct iwl_priv *priv)
2837 {
2838 int ret = 0;
2839 unsigned long flags;
2840
2841 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2842 return;
2843
2844 /* The following should be done only at AP bring up */
2845 if (!(iwl_is_associated(priv))) {
2846
2847 /* RXON - unassoc (to set timing command) */
2848 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2849 iwl4965_commit_rxon(priv);
2850
2851 /* RXON Timing */
2852 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2853 iwl4965_setup_rxon_timing(priv);
2854 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2855 sizeof(priv->rxon_timing), &priv->rxon_timing);
2856 if (ret)
2857 IWL_WARNING("REPLY_RXON_TIMING failed - "
2858 "Attempting to continue.\n");
2859
2860 iwl_set_rxon_chain(priv);
2861
2862 /* FIXME: what should be the assoc_id for AP? */
2863 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2864 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2865 priv->staging_rxon.flags |=
2866 RXON_FLG_SHORT_PREAMBLE_MSK;
2867 else
2868 priv->staging_rxon.flags &=
2869 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2870
2871 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2872 if (priv->assoc_capability &
2873 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2874 priv->staging_rxon.flags |=
2875 RXON_FLG_SHORT_SLOT_MSK;
2876 else
2877 priv->staging_rxon.flags &=
2878 ~RXON_FLG_SHORT_SLOT_MSK;
2879
2880 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2881 priv->staging_rxon.flags &=
2882 ~RXON_FLG_SHORT_SLOT_MSK;
2883 }
2884 /* restore RXON assoc */
2885 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2886 iwl4965_commit_rxon(priv);
2887 spin_lock_irqsave(&priv->lock, flags);
2888 iwl_activate_qos(priv, 1);
2889 spin_unlock_irqrestore(&priv->lock, flags);
2890 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2891 }
2892 iwl4965_send_beacon_cmd(priv);
2893
2894 /* FIXME - we need to add code here to detect a totally new
2895 * configuration, reset the AP, unassoc, rxon timing, assoc,
2896 * clear sta table, add BCAST sta... */
2897 }
2898
2899 /* temporary */
2900 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb);
2901
2902 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
2903 struct ieee80211_vif *vif,
2904 struct ieee80211_if_conf *conf)
2905 {
2906 struct iwl_priv *priv = hw->priv;
2907 DECLARE_MAC_BUF(mac);
2908 unsigned long flags;
2909 int rc;
2910
2911 if (conf == NULL)
2912 return -EIO;
2913
2914 if (priv->vif != vif) {
2915 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2916 return 0;
2917 }
2918
2919 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
2920 conf->changed & IEEE80211_IFCC_BEACON) {
2921 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2922 if (!beacon)
2923 return -ENOMEM;
2924 rc = iwl4965_mac_beacon_update(hw, beacon);
2925 if (rc)
2926 return rc;
2927 }
2928
2929 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
2930 (!conf->ssid_len)) {
2931 IWL_DEBUG_MAC80211
2932 ("Leaving in AP mode because HostAPD is not ready.\n");
2933 return 0;
2934 }
2935
2936 if (!iwl_is_alive(priv))
2937 return -EAGAIN;
2938
2939 mutex_lock(&priv->mutex);
2940
2941 if (conf->bssid)
2942 IWL_DEBUG_MAC80211("bssid: %s\n",
2943 print_mac(mac, conf->bssid));
2944
2945 /*
2946 * very dubious code was here; the probe filtering flag is never set:
2947 *
2948 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2949 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2950 */
2951
2952 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2953 if (!conf->bssid) {
2954 conf->bssid = priv->mac_addr;
2955 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2956 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
2957 print_mac(mac, conf->bssid));
2958 }
2959 if (priv->ibss_beacon)
2960 dev_kfree_skb(priv->ibss_beacon);
2961
2962 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2963 }
2964
2965 if (iwl_is_rfkill(priv))
2966 goto done;
2967
2968 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
2969 !is_multicast_ether_addr(conf->bssid)) {
2970 /* If there is currently a HW scan going on in the background
2971 * then we need to cancel it else the RXON below will fail. */
2972 if (iwl_scan_cancel_timeout(priv, 100)) {
2973 IWL_WARNING("Aborted scan still in progress "
2974 "after 100ms\n");
2975 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2976 mutex_unlock(&priv->mutex);
2977 return -EAGAIN;
2978 }
2979 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
2980
2981 /* TODO: Audit driver for usage of these members and see
2982 * if mac80211 deprecates them (priv->bssid looks like it
2983 * shouldn't be there, but I haven't scanned the IBSS code
2984 * to verify) - jpk */
2985 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2986
2987 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
2988 iwl4965_config_ap(priv);
2989 else {
2990 rc = iwl4965_commit_rxon(priv);
2991 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
2992 iwl_rxon_add_station(
2993 priv, priv->active_rxon.bssid_addr, 1);
2994 }
2995
2996 } else {
2997 iwl_scan_cancel_timeout(priv, 100);
2998 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2999 iwl4965_commit_rxon(priv);
3000 }
3001
3002 done:
3003 spin_lock_irqsave(&priv->lock, flags);
3004 if (!conf->ssid_len)
3005 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3006 else
3007 memcpy(priv->essid, conf->ssid, conf->ssid_len);
3008
3009 priv->essid_len = conf->ssid_len;
3010 spin_unlock_irqrestore(&priv->lock, flags);
3011
3012 IWL_DEBUG_MAC80211("leave\n");
3013 mutex_unlock(&priv->mutex);
3014
3015 return 0;
3016 }
3017
3018 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
3019 unsigned int changed_flags,
3020 unsigned int *total_flags,
3021 int mc_count, struct dev_addr_list *mc_list)
3022 {
3023 struct iwl_priv *priv = hw->priv;
3024
3025 if (changed_flags & (*total_flags) & FIF_OTHER_BSS) {
3026 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
3027 IEEE80211_IF_TYPE_MNTR,
3028 changed_flags, *total_flags);
3029 /* queue work 'cuz mac80211 is holding a lock which
3030 * prevents us from issuing (synchronous) f/w cmds */
3031 queue_work(priv->workqueue, &priv->set_monitor);
3032 }
3033 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI |
3034 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3035 }
3036
3037 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
3038 struct ieee80211_if_init_conf *conf)
3039 {
3040 struct iwl_priv *priv = hw->priv;
3041
3042 IWL_DEBUG_MAC80211("enter\n");
3043
3044 mutex_lock(&priv->mutex);
3045
3046 if (iwl_is_ready_rf(priv)) {
3047 iwl_scan_cancel_timeout(priv, 100);
3048 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3049 iwl4965_commit_rxon(priv);
3050 }
3051 if (priv->vif == conf->vif) {
3052 priv->vif = NULL;
3053 memset(priv->bssid, 0, ETH_ALEN);
3054 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3055 priv->essid_len = 0;
3056 }
3057 mutex_unlock(&priv->mutex);
3058
3059 IWL_DEBUG_MAC80211("leave\n");
3060
3061 }
3062
3063 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3064 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
3065 struct ieee80211_vif *vif,
3066 struct ieee80211_bss_conf *bss_conf,
3067 u32 changes)
3068 {
3069 struct iwl_priv *priv = hw->priv;
3070
3071 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
3072
3073 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3074 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
3075 bss_conf->use_short_preamble);
3076 if (bss_conf->use_short_preamble)
3077 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3078 else
3079 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3080 }
3081
3082 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3083 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3084 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3085 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3086 else
3087 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3088 }
3089
3090 if (changes & BSS_CHANGED_HT) {
3091 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
3092 iwl4965_ht_conf(priv, bss_conf);
3093 iwl_set_rxon_chain(priv);
3094 }
3095
3096 if (changes & BSS_CHANGED_ASSOC) {
3097 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3098 /* This should never happen as this function should
3099 * never be called from interrupt context. */
3100 if (WARN_ON_ONCE(in_interrupt()))
3101 return;
3102 if (bss_conf->assoc) {
3103 priv->assoc_id = bss_conf->aid;
3104 priv->beacon_int = bss_conf->beacon_int;
3105 priv->timestamp = bss_conf->timestamp;
3106 priv->assoc_capability = bss_conf->assoc_capability;
3107 priv->next_scan_jiffies = jiffies +
3108 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3109 mutex_lock(&priv->mutex);
3110 iwl4965_post_associate(priv);
3111 mutex_unlock(&priv->mutex);
3112 } else {
3113 priv->assoc_id = 0;
3114 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3115 }
3116 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3117 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3118 iwl_send_rxon_assoc(priv);
3119 }
3120
3121 }
3122
3123 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
3124 {
3125 int rc = 0;
3126 unsigned long flags;
3127 struct iwl_priv *priv = hw->priv;
3128
3129 IWL_DEBUG_MAC80211("enter\n");
3130
3131 mutex_lock(&priv->mutex);
3132 spin_lock_irqsave(&priv->lock, flags);
3133
3134 if (!iwl_is_ready_rf(priv)) {
3135 rc = -EIO;
3136 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3137 goto out_unlock;
3138 }
3139
3140 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
3141 rc = -EIO;
3142 IWL_ERROR("ERROR: APs don't scan\n");
3143 goto out_unlock;
3144 }
3145
3146 /* we don't schedule scan within next_scan_jiffies period */
3147 if (priv->next_scan_jiffies &&
3148 time_after(priv->next_scan_jiffies, jiffies)) {
3149 rc = -EAGAIN;
3150 goto out_unlock;
3151 }
3152 /* if we just finished scan ask for delay */
3153 if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
3154 IWL_DELAY_NEXT_SCAN, jiffies)) {
3155 rc = -EAGAIN;
3156 goto out_unlock;
3157 }
3158 if (len) {
3159 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
3160 iwl_escape_essid(ssid, len), (int)len);
3161
3162 priv->one_direct_scan = 1;
3163 priv->direct_ssid_len = (u8)
3164 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
3165 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3166 } else
3167 priv->one_direct_scan = 0;
3168
3169 rc = iwl_scan_initiate(priv);
3170
3171 IWL_DEBUG_MAC80211("leave\n");
3172
3173 out_unlock:
3174 spin_unlock_irqrestore(&priv->lock, flags);
3175 mutex_unlock(&priv->mutex);
3176
3177 return rc;
3178 }
3179
3180 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
3181 struct ieee80211_key_conf *keyconf, const u8 *addr,
3182 u32 iv32, u16 *phase1key)
3183 {
3184 struct iwl_priv *priv = hw->priv;
3185 u8 sta_id = IWL_INVALID_STATION;
3186 unsigned long flags;
3187 __le16 key_flags = 0;
3188 int i;
3189 DECLARE_MAC_BUF(mac);
3190
3191 IWL_DEBUG_MAC80211("enter\n");
3192
3193 sta_id = iwl_find_station(priv, addr);
3194 if (sta_id == IWL_INVALID_STATION) {
3195 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3196 print_mac(mac, addr));
3197 return;
3198 }
3199
3200 iwl_scan_cancel_timeout(priv, 100);
3201
3202 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
3203 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
3204 key_flags &= ~STA_KEY_FLG_INVALID;
3205
3206 if (sta_id == priv->hw_params.bcast_sta_id)
3207 key_flags |= STA_KEY_MULTICAST_MSK;
3208
3209 spin_lock_irqsave(&priv->sta_lock, flags);
3210
3211 priv->stations[sta_id].sta.key.key_flags = key_flags;
3212 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
3213
3214 for (i = 0; i < 5; i++)
3215 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
3216 cpu_to_le16(phase1key[i]);
3217
3218 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
3219 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3220
3221 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3222
3223 spin_unlock_irqrestore(&priv->sta_lock, flags);
3224
3225 IWL_DEBUG_MAC80211("leave\n");
3226 }
3227
3228 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3229 const u8 *local_addr, const u8 *addr,
3230 struct ieee80211_key_conf *key)
3231 {
3232 struct iwl_priv *priv = hw->priv;
3233 DECLARE_MAC_BUF(mac);
3234 int ret = 0;
3235 u8 sta_id = IWL_INVALID_STATION;
3236 u8 is_default_wep_key = 0;
3237
3238 IWL_DEBUG_MAC80211("enter\n");
3239
3240 if (priv->hw_params.sw_crypto) {
3241 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3242 return -EOPNOTSUPP;
3243 }
3244
3245 if (is_zero_ether_addr(addr))
3246 /* only support pairwise keys */
3247 return -EOPNOTSUPP;
3248
3249 sta_id = iwl_find_station(priv, addr);
3250 if (sta_id == IWL_INVALID_STATION) {
3251 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3252 print_mac(mac, addr));
3253 return -EINVAL;
3254
3255 }
3256
3257 mutex_lock(&priv->mutex);
3258 iwl_scan_cancel_timeout(priv, 100);
3259 mutex_unlock(&priv->mutex);
3260
3261 /* If we are getting WEP group key and we didn't receive any key mapping
3262 * so far, we are in legacy wep mode (group key only), otherwise we are
3263 * in 1X mode.
3264 * In legacy wep mode, we use another host command to the uCode */
3265 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3266 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3267 if (cmd == SET_KEY)
3268 is_default_wep_key = !priv->key_mapping_key;
3269 else
3270 is_default_wep_key =
3271 (key->hw_key_idx == HW_KEY_DEFAULT);
3272 }
3273
3274 switch (cmd) {
3275 case SET_KEY:
3276 if (is_default_wep_key)
3277 ret = iwl_set_default_wep_key(priv, key);
3278 else
3279 ret = iwl_set_dynamic_key(priv, key, sta_id);
3280
3281 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3282 break;
3283 case DISABLE_KEY:
3284 if (is_default_wep_key)
3285 ret = iwl_remove_default_wep_key(priv, key);
3286 else
3287 ret = iwl_remove_dynamic_key(priv, key, sta_id);
3288
3289 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3290 break;
3291 default:
3292 ret = -EINVAL;
3293 }
3294
3295 IWL_DEBUG_MAC80211("leave\n");
3296
3297 return ret;
3298 }
3299
3300 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3301 const struct ieee80211_tx_queue_params *params)
3302 {
3303 struct iwl_priv *priv = hw->priv;
3304 unsigned long flags;
3305 int q;
3306
3307 IWL_DEBUG_MAC80211("enter\n");
3308
3309 if (!iwl_is_ready_rf(priv)) {
3310 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3311 return -EIO;
3312 }
3313
3314 if (queue >= AC_NUM) {
3315 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3316 return 0;
3317 }
3318
3319 if (!priv->qos_data.qos_enable) {
3320 priv->qos_data.qos_active = 0;
3321 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3322 return 0;
3323 }
3324 q = AC_NUM - 1 - queue;
3325
3326 spin_lock_irqsave(&priv->lock, flags);
3327
3328 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3329 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3330 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3331 priv->qos_data.def_qos_parm.ac[q].edca_txop =
3332 cpu_to_le16((params->txop * 32));
3333
3334 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3335 priv->qos_data.qos_active = 1;
3336
3337 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3338 iwl_activate_qos(priv, 1);
3339 else if (priv->assoc_id && iwl_is_associated(priv))
3340 iwl_activate_qos(priv, 0);
3341
3342 spin_unlock_irqrestore(&priv->lock, flags);
3343
3344 IWL_DEBUG_MAC80211("leave\n");
3345 return 0;
3346 }
3347
3348 static int iwl4965_mac_ampdu_action(struct ieee80211_hw *hw,
3349 enum ieee80211_ampdu_mlme_action action,
3350 const u8 *addr, u16 tid, u16 *ssn)
3351 {
3352 struct iwl_priv *priv = hw->priv;
3353 DECLARE_MAC_BUF(mac);
3354
3355 IWL_DEBUG_HT("A-MPDU action on addr %s tid %d\n",
3356 print_mac(mac, addr), tid);
3357
3358 if (!(priv->cfg->sku & IWL_SKU_N))
3359 return -EACCES;
3360
3361 switch (action) {
3362 case IEEE80211_AMPDU_RX_START:
3363 IWL_DEBUG_HT("start Rx\n");
3364 return iwl_rx_agg_start(priv, addr, tid, *ssn);
3365 case IEEE80211_AMPDU_RX_STOP:
3366 IWL_DEBUG_HT("stop Rx\n");
3367 return iwl_rx_agg_stop(priv, addr, tid);
3368 case IEEE80211_AMPDU_TX_START:
3369 IWL_DEBUG_HT("start Tx\n");
3370 return iwl_tx_agg_start(priv, addr, tid, ssn);
3371 case IEEE80211_AMPDU_TX_STOP:
3372 IWL_DEBUG_HT("stop Tx\n");
3373 return iwl_tx_agg_stop(priv, addr, tid);
3374 default:
3375 IWL_DEBUG_HT("unknown\n");
3376 return -EINVAL;
3377 break;
3378 }
3379 return 0;
3380 }
3381 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
3382 struct ieee80211_tx_queue_stats *stats)
3383 {
3384 struct iwl_priv *priv = hw->priv;
3385 int i, avail;
3386 struct iwl_tx_queue *txq;
3387 struct iwl_queue *q;
3388 unsigned long flags;
3389
3390 IWL_DEBUG_MAC80211("enter\n");
3391
3392 if (!iwl_is_ready_rf(priv)) {
3393 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3394 return -EIO;
3395 }
3396
3397 spin_lock_irqsave(&priv->lock, flags);
3398
3399 for (i = 0; i < AC_NUM; i++) {
3400 txq = &priv->txq[i];
3401 q = &txq->q;
3402 avail = iwl_queue_space(q);
3403
3404 stats[i].len = q->n_window - avail;
3405 stats[i].limit = q->n_window - q->high_mark;
3406 stats[i].count = q->n_window;
3407
3408 }
3409 spin_unlock_irqrestore(&priv->lock, flags);
3410
3411 IWL_DEBUG_MAC80211("leave\n");
3412
3413 return 0;
3414 }
3415
3416 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
3417 struct ieee80211_low_level_stats *stats)
3418 {
3419 struct iwl_priv *priv = hw->priv;
3420
3421 priv = hw->priv;
3422 IWL_DEBUG_MAC80211("enter\n");
3423 IWL_DEBUG_MAC80211("leave\n");
3424
3425 return 0;
3426 }
3427
3428 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
3429 {
3430 struct iwl_priv *priv = hw->priv;
3431 unsigned long flags;
3432
3433 mutex_lock(&priv->mutex);
3434 IWL_DEBUG_MAC80211("enter\n");
3435
3436 spin_lock_irqsave(&priv->lock, flags);
3437 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3438 spin_unlock_irqrestore(&priv->lock, flags);
3439
3440 iwl_reset_qos(priv);
3441
3442 spin_lock_irqsave(&priv->lock, flags);
3443 priv->assoc_id = 0;
3444 priv->assoc_capability = 0;
3445 priv->assoc_station_added = 0;
3446
3447 /* new association get rid of ibss beacon skb */
3448 if (priv->ibss_beacon)
3449 dev_kfree_skb(priv->ibss_beacon);
3450
3451 priv->ibss_beacon = NULL;
3452
3453 priv->beacon_int = priv->hw->conf.beacon_int;
3454 priv->timestamp = 0;
3455 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
3456 priv->beacon_int = 0;
3457
3458 spin_unlock_irqrestore(&priv->lock, flags);
3459
3460 if (!iwl_is_ready_rf(priv)) {
3461 IWL_DEBUG_MAC80211("leave - not ready\n");
3462 mutex_unlock(&priv->mutex);
3463 return;
3464 }
3465
3466 /* we are restarting association process
3467 * clear RXON_FILTER_ASSOC_MSK bit
3468 */
3469 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3470 iwl_scan_cancel_timeout(priv, 100);
3471 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3472 iwl4965_commit_rxon(priv);
3473 }
3474
3475 iwl_power_update_mode(priv, 0);
3476
3477 /* Per mac80211.h: This is only used in IBSS mode... */
3478 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3479
3480 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3481 mutex_unlock(&priv->mutex);
3482 return;
3483 }
3484
3485 iwl4965_set_rate(priv);
3486
3487 mutex_unlock(&priv->mutex);
3488
3489 IWL_DEBUG_MAC80211("leave\n");
3490 }
3491
3492 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3493 {
3494 struct iwl_priv *priv = hw->priv;
3495 unsigned long flags;
3496 __le64 timestamp;
3497
3498 mutex_lock(&priv->mutex);
3499 IWL_DEBUG_MAC80211("enter\n");
3500
3501 if (!iwl_is_ready_rf(priv)) {
3502 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3503 mutex_unlock(&priv->mutex);
3504 return -EIO;
3505 }
3506
3507 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3508 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3509 mutex_unlock(&priv->mutex);
3510 return -EIO;
3511 }
3512
3513 spin_lock_irqsave(&priv->lock, flags);
3514
3515 if (priv->ibss_beacon)
3516 dev_kfree_skb(priv->ibss_beacon);
3517
3518 priv->ibss_beacon = skb;
3519
3520 priv->assoc_id = 0;
3521 timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3522 priv->timestamp = le64_to_cpu(timestamp) + (priv->beacon_int * 1000);
3523
3524 IWL_DEBUG_MAC80211("leave\n");
3525 spin_unlock_irqrestore(&priv->lock, flags);
3526
3527 iwl_reset_qos(priv);
3528
3529 iwl4965_post_associate(priv);
3530
3531 mutex_unlock(&priv->mutex);
3532
3533 return 0;
3534 }
3535
3536 /*****************************************************************************
3537 *
3538 * sysfs attributes
3539 *
3540 *****************************************************************************/
3541
3542 #ifdef CONFIG_IWLWIFI_DEBUG
3543
3544 /*
3545 * The following adds a new attribute to the sysfs representation
3546 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3547 * used for controlling the debug level.
3548 *
3549 * See the level definitions in iwl for details.
3550 */
3551
3552 static ssize_t show_debug_level(struct device *d,
3553 struct device_attribute *attr, char *buf)
3554 {
3555 struct iwl_priv *priv = d->driver_data;
3556
3557 return sprintf(buf, "0x%08X\n", priv->debug_level);
3558 }
3559 static ssize_t store_debug_level(struct device *d,
3560 struct device_attribute *attr,
3561 const char *buf, size_t count)
3562 {
3563 struct iwl_priv *priv = d->driver_data;
3564 char *p = (char *)buf;
3565 u32 val;
3566
3567 val = simple_strtoul(p, &p, 0);
3568 if (p == buf)
3569 printk(KERN_INFO DRV_NAME
3570 ": %s is not in hex or decimal form.\n", buf);
3571 else
3572 priv->debug_level = val;
3573
3574 return strnlen(buf, count);
3575 }
3576
3577 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3578 show_debug_level, store_debug_level);
3579
3580
3581 #endif /* CONFIG_IWLWIFI_DEBUG */
3582
3583
3584 static ssize_t show_version(struct device *d,
3585 struct device_attribute *attr, char *buf)
3586 {
3587 struct iwl_priv *priv = d->driver_data;
3588 struct iwl_alive_resp *palive = &priv->card_alive;
3589 ssize_t pos = 0;
3590 u16 eeprom_ver;
3591
3592 if (palive->is_valid)
3593 pos += sprintf(buf + pos,
3594 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3595 "fw type: 0x%01X 0x%01X\n",
3596 palive->ucode_major, palive->ucode_minor,
3597 palive->sw_rev[0], palive->sw_rev[1],
3598 palive->ver_type, palive->ver_subtype);
3599 else
3600 pos += sprintf(buf + pos, "fw not loaded\n");
3601
3602 if (priv->eeprom) {
3603 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3604 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3605 eeprom_ver);
3606 } else {
3607 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3608 }
3609
3610 return pos;
3611 }
3612
3613 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3614
3615 static ssize_t show_temperature(struct device *d,
3616 struct device_attribute *attr, char *buf)
3617 {
3618 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3619
3620 if (!iwl_is_alive(priv))
3621 return -EAGAIN;
3622
3623 return sprintf(buf, "%d\n", priv->temperature);
3624 }
3625
3626 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3627
3628 static ssize_t show_rs_window(struct device *d,
3629 struct device_attribute *attr,
3630 char *buf)
3631 {
3632 struct iwl_priv *priv = d->driver_data;
3633 return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
3634 }
3635 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
3636
3637 static ssize_t show_tx_power(struct device *d,
3638 struct device_attribute *attr, char *buf)
3639 {
3640 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3641 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3642 }
3643
3644 static ssize_t store_tx_power(struct device *d,
3645 struct device_attribute *attr,
3646 const char *buf, size_t count)
3647 {
3648 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3649 char *p = (char *)buf;
3650 u32 val;
3651
3652 val = simple_strtoul(p, &p, 10);
3653 if (p == buf)
3654 printk(KERN_INFO DRV_NAME
3655 ": %s is not in decimal form.\n", buf);
3656 else
3657 iwl_set_tx_power(priv, val, false);
3658
3659 return count;
3660 }
3661
3662 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3663
3664 static ssize_t show_flags(struct device *d,
3665 struct device_attribute *attr, char *buf)
3666 {
3667 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3668
3669 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3670 }
3671
3672 static ssize_t store_flags(struct device *d,
3673 struct device_attribute *attr,
3674 const char *buf, size_t count)
3675 {
3676 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3677 u32 flags = simple_strtoul(buf, NULL, 0);
3678
3679 mutex_lock(&priv->mutex);
3680 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3681 /* Cancel any currently running scans... */
3682 if (iwl_scan_cancel_timeout(priv, 100))
3683 IWL_WARNING("Could not cancel scan.\n");
3684 else {
3685 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
3686 flags);
3687 priv->staging_rxon.flags = cpu_to_le32(flags);
3688 iwl4965_commit_rxon(priv);
3689 }
3690 }
3691 mutex_unlock(&priv->mutex);
3692
3693 return count;
3694 }
3695
3696 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3697
3698 static ssize_t show_filter_flags(struct device *d,
3699 struct device_attribute *attr, char *buf)
3700 {
3701 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3702
3703 return sprintf(buf, "0x%04X\n",
3704 le32_to_cpu(priv->active_rxon.filter_flags));
3705 }
3706
3707 static ssize_t store_filter_flags(struct device *d,
3708 struct device_attribute *attr,
3709 const char *buf, size_t count)
3710 {
3711 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3712 u32 filter_flags = simple_strtoul(buf, NULL, 0);
3713
3714 mutex_lock(&priv->mutex);
3715 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3716 /* Cancel any currently running scans... */
3717 if (iwl_scan_cancel_timeout(priv, 100))
3718 IWL_WARNING("Could not cancel scan.\n");
3719 else {
3720 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3721 "0x%04X\n", filter_flags);
3722 priv->staging_rxon.filter_flags =
3723 cpu_to_le32(filter_flags);
3724 iwl4965_commit_rxon(priv);
3725 }
3726 }
3727 mutex_unlock(&priv->mutex);
3728
3729 return count;
3730 }
3731
3732 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3733 store_filter_flags);
3734
3735 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3736
3737 static ssize_t show_measurement(struct device *d,
3738 struct device_attribute *attr, char *buf)
3739 {
3740 struct iwl_priv *priv = dev_get_drvdata(d);
3741 struct iwl4965_spectrum_notification measure_report;
3742 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3743 u8 *data = (u8 *) & measure_report;
3744 unsigned long flags;
3745
3746 spin_lock_irqsave(&priv->lock, flags);
3747 if (!(priv->measurement_status & MEASUREMENT_READY)) {
3748 spin_unlock_irqrestore(&priv->lock, flags);
3749 return 0;
3750 }
3751 memcpy(&measure_report, &priv->measure_report, size);
3752 priv->measurement_status = 0;
3753 spin_unlock_irqrestore(&priv->lock, flags);
3754
3755 while (size && (PAGE_SIZE - len)) {
3756 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3757 PAGE_SIZE - len, 1);
3758 len = strlen(buf);
3759 if (PAGE_SIZE - len)
3760 buf[len++] = '\n';
3761
3762 ofs += 16;
3763 size -= min(size, 16U);
3764 }
3765
3766 return len;
3767 }
3768
3769 static ssize_t store_measurement(struct device *d,
3770 struct device_attribute *attr,
3771 const char *buf, size_t count)
3772 {
3773 struct iwl_priv *priv = dev_get_drvdata(d);
3774 struct ieee80211_measurement_params params = {
3775 .channel = le16_to_cpu(priv->active_rxon.channel),
3776 .start_time = cpu_to_le64(priv->last_tsf),
3777 .duration = cpu_to_le16(1),
3778 };
3779 u8 type = IWL_MEASURE_BASIC;
3780 u8 buffer[32];
3781 u8 channel;
3782
3783 if (count) {
3784 char *p = buffer;
3785 strncpy(buffer, buf, min(sizeof(buffer), count));
3786 channel = simple_strtoul(p, NULL, 0);
3787 if (channel)
3788 params.channel = channel;
3789
3790 p = buffer;
3791 while (*p && *p != ' ')
3792 p++;
3793 if (*p)
3794 type = simple_strtoul(p + 1, NULL, 0);
3795 }
3796
3797 IWL_DEBUG_INFO("Invoking measurement of type %d on "
3798 "channel %d (for '%s')\n", type, params.channel, buf);
3799 iwl4965_get_measurement(priv, &params, type);
3800
3801 return count;
3802 }
3803
3804 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3805 show_measurement, store_measurement);
3806 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
3807
3808 static ssize_t store_retry_rate(struct device *d,
3809 struct device_attribute *attr,
3810 const char *buf, size_t count)
3811 {
3812 struct iwl_priv *priv = dev_get_drvdata(d);
3813
3814 priv->retry_rate = simple_strtoul(buf, NULL, 0);
3815 if (priv->retry_rate <= 0)
3816 priv->retry_rate = 1;
3817
3818 return count;
3819 }
3820
3821 static ssize_t show_retry_rate(struct device *d,
3822 struct device_attribute *attr, char *buf)
3823 {
3824 struct iwl_priv *priv = dev_get_drvdata(d);
3825 return sprintf(buf, "%d", priv->retry_rate);
3826 }
3827
3828 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3829 store_retry_rate);
3830
3831 static ssize_t store_power_level(struct device *d,
3832 struct device_attribute *attr,
3833 const char *buf, size_t count)
3834 {
3835 struct iwl_priv *priv = dev_get_drvdata(d);
3836 int ret;
3837 int mode;
3838
3839 mode = simple_strtoul(buf, NULL, 0);
3840 mutex_lock(&priv->mutex);
3841
3842 if (!iwl_is_ready(priv)) {
3843 ret = -EAGAIN;
3844 goto out;
3845 }
3846
3847 ret = iwl_power_set_user_mode(priv, mode);
3848 if (ret) {
3849 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3850 goto out;
3851 }
3852 ret = count;
3853
3854 out:
3855 mutex_unlock(&priv->mutex);
3856 return ret;
3857 }
3858
3859 static ssize_t show_power_level(struct device *d,
3860 struct device_attribute *attr, char *buf)
3861 {
3862 struct iwl_priv *priv = dev_get_drvdata(d);
3863 int mode = priv->power_data.user_power_setting;
3864 int system = priv->power_data.system_power_setting;
3865 int level = priv->power_data.power_mode;
3866 char *p = buf;
3867
3868 switch (system) {
3869 case IWL_POWER_SYS_AUTO:
3870 p += sprintf(p, "SYSTEM:auto");
3871 break;
3872 case IWL_POWER_SYS_AC:
3873 p += sprintf(p, "SYSTEM:ac");
3874 break;
3875 case IWL_POWER_SYS_BATTERY:
3876 p += sprintf(p, "SYSTEM:battery");
3877 break;
3878 }
3879
3880 p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO)?"fixed":"auto");
3881 p += sprintf(p, "\tINDEX:%d", level);
3882 p += sprintf(p, "\n");
3883 return (p - buf + 1);
3884 }
3885
3886 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3887 store_power_level);
3888
3889 static ssize_t show_channels(struct device *d,
3890 struct device_attribute *attr, char *buf)
3891 {
3892
3893 struct iwl_priv *priv = dev_get_drvdata(d);
3894 struct ieee80211_channel *channels = NULL;
3895 const struct ieee80211_supported_band *supp_band = NULL;
3896 int len = 0, i;
3897 int count = 0;
3898
3899 if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3900 return -EAGAIN;
3901
3902 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3903 channels = supp_band->channels;
3904 count = supp_band->n_channels;
3905
3906 len += sprintf(&buf[len],
3907 "Displaying %d channels in 2.4GHz band "
3908 "(802.11bg):\n", count);
3909
3910 for (i = 0; i < count; i++)
3911 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3912 ieee80211_frequency_to_channel(
3913 channels[i].center_freq),
3914 channels[i].max_power,
3915 channels[i].flags & IEEE80211_CHAN_RADAR ?
3916 " (IEEE 802.11h required)" : "",
3917 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3918 || (channels[i].flags &
3919 IEEE80211_CHAN_RADAR)) ? "" :
3920 ", IBSS",
3921 channels[i].flags &
3922 IEEE80211_CHAN_PASSIVE_SCAN ?
3923 "passive only" : "active/passive");
3924
3925 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
3926 channels = supp_band->channels;
3927 count = supp_band->n_channels;
3928
3929 len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
3930 "(802.11a):\n", count);
3931
3932 for (i = 0; i < count; i++)
3933 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3934 ieee80211_frequency_to_channel(
3935 channels[i].center_freq),
3936 channels[i].max_power,
3937 channels[i].flags & IEEE80211_CHAN_RADAR ?
3938 " (IEEE 802.11h required)" : "",
3939 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3940 || (channels[i].flags &
3941 IEEE80211_CHAN_RADAR)) ? "" :
3942 ", IBSS",
3943 channels[i].flags &
3944 IEEE80211_CHAN_PASSIVE_SCAN ?
3945 "passive only" : "active/passive");
3946
3947 return len;
3948 }
3949
3950 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3951
3952 static ssize_t show_statistics(struct device *d,
3953 struct device_attribute *attr, char *buf)
3954 {
3955 struct iwl_priv *priv = dev_get_drvdata(d);
3956 u32 size = sizeof(struct iwl_notif_statistics);
3957 u32 len = 0, ofs = 0;
3958 u8 *data = (u8 *) & priv->statistics;
3959 int rc = 0;
3960
3961 if (!iwl_is_alive(priv))
3962 return -EAGAIN;
3963
3964 mutex_lock(&priv->mutex);
3965 rc = iwl_send_statistics_request(priv, 0);
3966 mutex_unlock(&priv->mutex);
3967
3968 if (rc) {
3969 len = sprintf(buf,
3970 "Error sending statistics request: 0x%08X\n", rc);
3971 return len;
3972 }
3973
3974 while (size && (PAGE_SIZE - len)) {
3975 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3976 PAGE_SIZE - len, 1);
3977 len = strlen(buf);
3978 if (PAGE_SIZE - len)
3979 buf[len++] = '\n';
3980
3981 ofs += 16;
3982 size -= min(size, 16U);
3983 }
3984
3985 return len;
3986 }
3987
3988 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3989
3990 static ssize_t show_status(struct device *d,
3991 struct device_attribute *attr, char *buf)
3992 {
3993 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3994 if (!iwl_is_alive(priv))
3995 return -EAGAIN;
3996 return sprintf(buf, "0x%08x\n", (int)priv->status);
3997 }
3998
3999 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
4000
4001 /*****************************************************************************
4002 *
4003 * driver setup and teardown
4004 *
4005 *****************************************************************************/
4006
4007 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4008 {
4009 priv->workqueue = create_workqueue(DRV_NAME);
4010
4011 init_waitqueue_head(&priv->wait_command_queue);
4012
4013 INIT_WORK(&priv->up, iwl4965_bg_up);
4014 INIT_WORK(&priv->restart, iwl4965_bg_restart);
4015 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
4016 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
4017 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4018 INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
4019 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4020 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4021 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4022
4023 /* FIXME : remove when resolved PENDING */
4024 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
4025 iwl_setup_scan_deferred_work(priv);
4026
4027 if (priv->cfg->ops->lib->setup_deferred_work)
4028 priv->cfg->ops->lib->setup_deferred_work(priv);
4029
4030 init_timer(&priv->statistics_periodic);
4031 priv->statistics_periodic.data = (unsigned long)priv;
4032 priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
4033
4034 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4035 iwl4965_irq_tasklet, (unsigned long)priv);
4036 }
4037
4038 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4039 {
4040 if (priv->cfg->ops->lib->cancel_deferred_work)
4041 priv->cfg->ops->lib->cancel_deferred_work(priv);
4042
4043 cancel_delayed_work_sync(&priv->init_alive_start);
4044 cancel_delayed_work(&priv->scan_check);
4045 cancel_delayed_work(&priv->alive_start);
4046 cancel_work_sync(&priv->beacon_update);
4047 del_timer_sync(&priv->statistics_periodic);
4048 }
4049
4050 static struct attribute *iwl4965_sysfs_entries[] = {
4051 &dev_attr_channels.attr,
4052 &dev_attr_flags.attr,
4053 &dev_attr_filter_flags.attr,
4054 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
4055 &dev_attr_measurement.attr,
4056 #endif
4057 &dev_attr_power_level.attr,
4058 &dev_attr_retry_rate.attr,
4059 &dev_attr_rs_window.attr,
4060 &dev_attr_statistics.attr,
4061 &dev_attr_status.attr,
4062 &dev_attr_temperature.attr,
4063 &dev_attr_tx_power.attr,
4064 #ifdef CONFIG_IWLWIFI_DEBUG
4065 &dev_attr_debug_level.attr,
4066 #endif
4067 &dev_attr_version.attr,
4068
4069 NULL
4070 };
4071
4072 static struct attribute_group iwl4965_attribute_group = {
4073 .name = NULL, /* put in device directory */
4074 .attrs = iwl4965_sysfs_entries,
4075 };
4076
4077 static struct ieee80211_ops iwl4965_hw_ops = {
4078 .tx = iwl4965_mac_tx,
4079 .start = iwl4965_mac_start,
4080 .stop = iwl4965_mac_stop,
4081 .add_interface = iwl4965_mac_add_interface,
4082 .remove_interface = iwl4965_mac_remove_interface,
4083 .config = iwl4965_mac_config,
4084 .config_interface = iwl4965_mac_config_interface,
4085 .configure_filter = iwl4965_configure_filter,
4086 .set_key = iwl4965_mac_set_key,
4087 .update_tkip_key = iwl4965_mac_update_tkip_key,
4088 .get_stats = iwl4965_mac_get_stats,
4089 .get_tx_stats = iwl4965_mac_get_tx_stats,
4090 .conf_tx = iwl4965_mac_conf_tx,
4091 .reset_tsf = iwl4965_mac_reset_tsf,
4092 .bss_info_changed = iwl4965_bss_info_changed,
4093 .ampdu_action = iwl4965_mac_ampdu_action,
4094 .hw_scan = iwl4965_mac_hw_scan
4095 };
4096
4097 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4098 {
4099 int err = 0;
4100 struct iwl_priv *priv;
4101 struct ieee80211_hw *hw;
4102 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4103 unsigned long flags;
4104 DECLARE_MAC_BUF(mac);
4105
4106 /************************
4107 * 1. Allocating HW data
4108 ************************/
4109
4110 /* Disabling hardware scan means that mac80211 will perform scans
4111 * "the hard way", rather than using device's scan. */
4112 if (cfg->mod_params->disable_hw_scan) {
4113 if (cfg->mod_params->debug & IWL_DL_INFO)
4114 dev_printk(KERN_DEBUG, &(pdev->dev),
4115 "Disabling hw_scan\n");
4116 iwl4965_hw_ops.hw_scan = NULL;
4117 }
4118
4119 hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
4120 if (!hw) {
4121 err = -ENOMEM;
4122 goto out;
4123 }
4124 priv = hw->priv;
4125 /* At this point both hw and priv are allocated. */
4126
4127 SET_IEEE80211_DEV(hw, &pdev->dev);
4128
4129 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
4130 priv->cfg = cfg;
4131 priv->pci_dev = pdev;
4132
4133 #ifdef CONFIG_IWLWIFI_DEBUG
4134 priv->debug_level = priv->cfg->mod_params->debug;
4135 atomic_set(&priv->restrict_refcnt, 0);
4136 #endif
4137
4138 /**************************
4139 * 2. Initializing PCI bus
4140 **************************/
4141 if (pci_enable_device(pdev)) {
4142 err = -ENODEV;
4143 goto out_ieee80211_free_hw;
4144 }
4145
4146 pci_set_master(pdev);
4147
4148 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
4149 if (!err)
4150 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
4151 if (err) {
4152 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4153 if (!err)
4154 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
4155 /* both attempts failed: */
4156 if (err) {
4157 printk(KERN_WARNING "%s: No suitable DMA available.\n",
4158 DRV_NAME);
4159 goto out_pci_disable_device;
4160 }
4161 }
4162
4163 err = pci_request_regions(pdev, DRV_NAME);
4164 if (err)
4165 goto out_pci_disable_device;
4166
4167 pci_set_drvdata(pdev, priv);
4168
4169 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4170 * PCI Tx retries from interfering with C3 CPU state */
4171 pci_write_config_byte(pdev, 0x41, 0x00);
4172
4173 /***********************
4174 * 3. Read REV register
4175 ***********************/
4176 priv->hw_base = pci_iomap(pdev, 0, 0);
4177 if (!priv->hw_base) {
4178 err = -ENODEV;
4179 goto out_pci_release_regions;
4180 }
4181
4182 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
4183 (unsigned long long) pci_resource_len(pdev, 0));
4184 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
4185
4186 iwl_hw_detect(priv);
4187 printk(KERN_INFO DRV_NAME
4188 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
4189 priv->cfg->name, priv->hw_rev);
4190
4191 /* amp init */
4192 err = priv->cfg->ops->lib->apm_ops.init(priv);
4193 if (err < 0) {
4194 IWL_DEBUG_INFO("Failed to init APMG\n");
4195 goto out_iounmap;
4196 }
4197 /*****************
4198 * 4. Read EEPROM
4199 *****************/
4200 /* Read the EEPROM */
4201 err = iwl_eeprom_init(priv);
4202 if (err) {
4203 IWL_ERROR("Unable to init EEPROM\n");
4204 goto out_iounmap;
4205 }
4206 err = iwl_eeprom_check_version(priv);
4207 if (err)
4208 goto out_iounmap;
4209
4210 /* extract MAC Address */
4211 iwl_eeprom_get_mac(priv, priv->mac_addr);
4212 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
4213 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4214
4215 /************************
4216 * 5. Setup HW constants
4217 ************************/
4218 if (iwl_set_hw_params(priv)) {
4219 IWL_ERROR("failed to set hw parameters\n");
4220 goto out_free_eeprom;
4221 }
4222
4223 /*******************
4224 * 6. Setup priv
4225 *******************/
4226
4227 err = iwl_init_drv(priv);
4228 if (err)
4229 goto out_free_eeprom;
4230 /* At this point both hw and priv are initialized. */
4231
4232 /**********************************
4233 * 7. Initialize module parameters
4234 **********************************/
4235
4236 /* Disable radio (SW RF KILL) via parameter when loading driver */
4237 if (priv->cfg->mod_params->disable) {
4238 set_bit(STATUS_RF_KILL_SW, &priv->status);
4239 IWL_DEBUG_INFO("Radio disabled.\n");
4240 }
4241
4242 /********************
4243 * 8. Setup services
4244 ********************/
4245 spin_lock_irqsave(&priv->lock, flags);
4246 iwl4965_disable_interrupts(priv);
4247 spin_unlock_irqrestore(&priv->lock, flags);
4248
4249 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4250 if (err) {
4251 IWL_ERROR("failed to create sysfs device attributes\n");
4252 goto out_uninit_drv;
4253 }
4254
4255
4256 iwl_setup_deferred_work(priv);
4257 iwl_setup_rx_handlers(priv);
4258
4259 /********************
4260 * 9. Conclude
4261 ********************/
4262 pci_save_state(pdev);
4263 pci_disable_device(pdev);
4264
4265 /**********************************
4266 * 10. Setup and register mac80211
4267 **********************************/
4268
4269 err = iwl_setup_mac(priv);
4270 if (err)
4271 goto out_remove_sysfs;
4272
4273 err = iwl_dbgfs_register(priv, DRV_NAME);
4274 if (err)
4275 IWL_ERROR("failed to create debugfs files\n");
4276
4277 err = iwl_rfkill_init(priv);
4278 if (err)
4279 IWL_ERROR("Unable to initialize RFKILL system. "
4280 "Ignoring error: %d\n", err);
4281 iwl_power_initialize(priv);
4282 return 0;
4283
4284 out_remove_sysfs:
4285 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4286 out_uninit_drv:
4287 iwl_uninit_drv(priv);
4288 out_free_eeprom:
4289 iwl_eeprom_free(priv);
4290 out_iounmap:
4291 pci_iounmap(pdev, priv->hw_base);
4292 out_pci_release_regions:
4293 pci_release_regions(pdev);
4294 pci_set_drvdata(pdev, NULL);
4295 out_pci_disable_device:
4296 pci_disable_device(pdev);
4297 out_ieee80211_free_hw:
4298 ieee80211_free_hw(priv->hw);
4299 out:
4300 return err;
4301 }
4302
4303 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
4304 {
4305 struct iwl_priv *priv = pci_get_drvdata(pdev);
4306 unsigned long flags;
4307
4308 if (!priv)
4309 return;
4310
4311 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4312
4313 iwl_dbgfs_unregister(priv);
4314 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4315
4316 if (priv->mac80211_registered) {
4317 ieee80211_unregister_hw(priv->hw);
4318 priv->mac80211_registered = 0;
4319 }
4320
4321 set_bit(STATUS_EXIT_PENDING, &priv->status);
4322
4323 iwl4965_down(priv);
4324
4325 /* make sure we flush any pending irq or
4326 * tasklet for the driver
4327 */
4328 spin_lock_irqsave(&priv->lock, flags);
4329 iwl4965_disable_interrupts(priv);
4330 spin_unlock_irqrestore(&priv->lock, flags);
4331
4332 iwl_synchronize_irq(priv);
4333
4334 iwl_rfkill_unregister(priv);
4335 iwl4965_dealloc_ucode_pci(priv);
4336
4337 if (priv->rxq.bd)
4338 iwl_rx_queue_free(priv, &priv->rxq);
4339 iwl_hw_txq_ctx_free(priv);
4340
4341 iwl_clear_stations_table(priv);
4342 iwl_eeprom_free(priv);
4343
4344
4345 /*netif_stop_queue(dev); */
4346 flush_workqueue(priv->workqueue);
4347
4348 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
4349 * priv->workqueue... so we can't take down the workqueue
4350 * until now... */
4351 destroy_workqueue(priv->workqueue);
4352 priv->workqueue = NULL;
4353
4354 pci_iounmap(pdev, priv->hw_base);
4355 pci_release_regions(pdev);
4356 pci_disable_device(pdev);
4357 pci_set_drvdata(pdev, NULL);
4358
4359 iwl_uninit_drv(priv);
4360
4361 if (priv->ibss_beacon)
4362 dev_kfree_skb(priv->ibss_beacon);
4363
4364 ieee80211_free_hw(priv->hw);
4365 }
4366
4367 #ifdef CONFIG_PM
4368
4369 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4370 {
4371 struct iwl_priv *priv = pci_get_drvdata(pdev);
4372
4373 if (priv->is_open) {
4374 set_bit(STATUS_IN_SUSPEND, &priv->status);
4375 iwl4965_mac_stop(priv->hw);
4376 priv->is_open = 1;
4377 }
4378
4379 pci_set_power_state(pdev, PCI_D3hot);
4380
4381 return 0;
4382 }
4383
4384 static int iwl4965_pci_resume(struct pci_dev *pdev)
4385 {
4386 struct iwl_priv *priv = pci_get_drvdata(pdev);
4387
4388 pci_set_power_state(pdev, PCI_D0);
4389
4390 if (priv->is_open)
4391 iwl4965_mac_start(priv->hw);
4392
4393 clear_bit(STATUS_IN_SUSPEND, &priv->status);
4394 return 0;
4395 }
4396
4397 #endif /* CONFIG_PM */
4398
4399 /*****************************************************************************
4400 *
4401 * driver and module entry point
4402 *
4403 *****************************************************************************/
4404
4405 /* Hardware specific file defines the PCI IDs table for that hardware module */
4406 static struct pci_device_id iwl_hw_card_ids[] = {
4407 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4408 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4409 #ifdef CONFIG_IWL5000
4410 {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
4411 {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
4412 {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
4413 {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
4414 {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
4415 {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
4416 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4417 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4418 {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
4419 {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
4420 {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
4421 #endif /* CONFIG_IWL5000 */
4422 {0}
4423 };
4424 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4425
4426 static struct pci_driver iwl_driver = {
4427 .name = DRV_NAME,
4428 .id_table = iwl_hw_card_ids,
4429 .probe = iwl4965_pci_probe,
4430 .remove = __devexit_p(iwl4965_pci_remove),
4431 #ifdef CONFIG_PM
4432 .suspend = iwl4965_pci_suspend,
4433 .resume = iwl4965_pci_resume,
4434 #endif
4435 };
4436
4437 static int __init iwl4965_init(void)
4438 {
4439
4440 int ret;
4441 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4442 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4443
4444 ret = iwl4965_rate_control_register();
4445 if (ret) {
4446 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4447 return ret;
4448 }
4449
4450 ret = pci_register_driver(&iwl_driver);
4451 if (ret) {
4452 IWL_ERROR("Unable to initialize PCI module\n");
4453 goto error_register;
4454 }
4455
4456 return ret;
4457
4458 error_register:
4459 iwl4965_rate_control_unregister();
4460 return ret;
4461 }
4462
4463 static void __exit iwl4965_exit(void)
4464 {
4465 pci_unregister_driver(&iwl_driver);
4466 iwl4965_rate_control_unregister();
4467 }
4468
4469 module_exit(iwl4965_exit);
4470 module_init(iwl4965_init);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree