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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 into lvs-next-2.6
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl-agn.c
1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
4 *
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
20 *
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
23 *
24 * Contact Information:
25 * James P. Ketrenos <ipw2100-admin@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
29
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/init.h>
33 #include <linux/pci.h>
34 #include <linux/dma-mapping.h>
35 #include <linux/delay.h>
36 #include <linux/skbuff.h>
37 #include <linux/netdevice.h>
38 #include <linux/wireless.h>
39 #include <linux/firmware.h>
40 #include <linux/etherdevice.h>
41 #include <linux/if_arp.h>
42
43 #include <net/mac80211.h>
44
45 #include <asm/div64.h>
46
47 #include "iwl-eeprom.h"
48 #include "iwl-dev.h"
49 #include "iwl-core.h"
50 #include "iwl-io.h"
51 #include "iwl-helpers.h"
52 #include "iwl-sta.h"
53 #include "iwl-calib.h"
54
55
56 /******************************************************************************
57 *
58 * module boiler plate
59 *
60 ******************************************************************************/
61
62 /*
63 * module name, copyright, version, etc.
64 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
65 */
66
67 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
68
69 #ifdef CONFIG_IWLWIFI_DEBUG
70 #define VD "d"
71 #else
72 #define VD
73 #endif
74
75 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
76 #define VS "s"
77 #else
78 #define VS
79 #endif
80
81 #define DRV_VERSION IWLWIFI_VERSION VD VS
82
83
84 MODULE_DESCRIPTION(DRV_DESCRIPTION);
85 MODULE_VERSION(DRV_VERSION);
86 MODULE_AUTHOR(DRV_COPYRIGHT);
87 MODULE_LICENSE("GPL");
88 MODULE_ALIAS("iwl4965");
89
90 /*************** STATION TABLE MANAGEMENT ****
91 * mac80211 should be examined to determine if sta_info is duplicating
92 * the functionality provided here
93 */
94
95 /**************************************************************/
96
97
98
99 static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
100 {
101 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
102
103 if (hw_decrypt)
104 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
105 else
106 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
107
108 }
109
110 /**
111 * iwl4965_check_rxon_cmd - validate RXON structure is valid
112 *
113 * NOTE: This is really only useful during development and can eventually
114 * be #ifdef'd out once the driver is stable and folks aren't actively
115 * making changes
116 */
117 static int iwl4965_check_rxon_cmd(struct iwl_rxon_cmd *rxon)
118 {
119 int error = 0;
120 int counter = 1;
121
122 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
123 error |= le32_to_cpu(rxon->flags &
124 (RXON_FLG_TGJ_NARROW_BAND_MSK |
125 RXON_FLG_RADAR_DETECT_MSK));
126 if (error)
127 IWL_WARNING("check 24G fields %d | %d\n",
128 counter++, error);
129 } else {
130 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
131 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
132 if (error)
133 IWL_WARNING("check 52 fields %d | %d\n",
134 counter++, error);
135 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
136 if (error)
137 IWL_WARNING("check 52 CCK %d | %d\n",
138 counter++, error);
139 }
140 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
141 if (error)
142 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
143
144 /* make sure basic rates 6Mbps and 1Mbps are supported */
145 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
146 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
147 if (error)
148 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
149
150 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
151 if (error)
152 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
153
154 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
155 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
156 if (error)
157 IWL_WARNING("check CCK and short slot %d | %d\n",
158 counter++, error);
159
160 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
161 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
162 if (error)
163 IWL_WARNING("check CCK & auto detect %d | %d\n",
164 counter++, error);
165
166 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
167 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
168 if (error)
169 IWL_WARNING("check TGG and auto detect %d | %d\n",
170 counter++, error);
171
172 if (error)
173 IWL_WARNING("Tuning to channel %d\n",
174 le16_to_cpu(rxon->channel));
175
176 if (error) {
177 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
178 return -1;
179 }
180 return 0;
181 }
182
183 /**
184 * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
185 * @priv: staging_rxon is compared to active_rxon
186 *
187 * If the RXON structure is changing enough to require a new tune,
188 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
189 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
190 */
191 static int iwl_full_rxon_required(struct iwl_priv *priv)
192 {
193
194 /* These items are only settable from the full RXON command */
195 if (!(iwl_is_associated(priv)) ||
196 compare_ether_addr(priv->staging_rxon.bssid_addr,
197 priv->active_rxon.bssid_addr) ||
198 compare_ether_addr(priv->staging_rxon.node_addr,
199 priv->active_rxon.node_addr) ||
200 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
201 priv->active_rxon.wlap_bssid_addr) ||
202 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
203 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
204 (priv->staging_rxon.air_propagation !=
205 priv->active_rxon.air_propagation) ||
206 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
207 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
208 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
209 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
210 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
211 return 1;
212
213 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
214 * be updated with the RXON_ASSOC command -- however only some
215 * flag transitions are allowed using RXON_ASSOC */
216
217 /* Check if we are not switching bands */
218 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
219 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
220 return 1;
221
222 /* Check if we are switching association toggle */
223 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
224 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
225 return 1;
226
227 return 0;
228 }
229
230 /**
231 * iwl4965_commit_rxon - commit staging_rxon to hardware
232 *
233 * The RXON command in staging_rxon is committed to the hardware and
234 * the active_rxon structure is updated with the new data. This
235 * function correctly transitions out of the RXON_ASSOC_MSK state if
236 * a HW tune is required based on the RXON structure changes.
237 */
238 static int iwl4965_commit_rxon(struct iwl_priv *priv)
239 {
240 /* cast away the const for active_rxon in this function */
241 struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
242 DECLARE_MAC_BUF(mac);
243 int ret;
244 bool new_assoc =
245 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
246
247 if (!iwl_is_alive(priv))
248 return -EBUSY;
249
250 /* always get timestamp with Rx frame */
251 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
252 /* allow CTS-to-self if possible. this is relevant only for
253 * 5000, but will not damage 4965 */
254 priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
255
256 ret = iwl4965_check_rxon_cmd(&priv->staging_rxon);
257 if (ret) {
258 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
259 return -EINVAL;
260 }
261
262 /* If we don't need to send a full RXON, we can use
263 * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
264 * and other flags for the current radio configuration. */
265 if (!iwl_full_rxon_required(priv)) {
266 ret = iwl_send_rxon_assoc(priv);
267 if (ret) {
268 IWL_ERROR("Error setting RXON_ASSOC (%d)\n", ret);
269 return ret;
270 }
271
272 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
273 return 0;
274 }
275
276 /* station table will be cleared */
277 priv->assoc_station_added = 0;
278
279 /* If we are currently associated and the new config requires
280 * an RXON_ASSOC and the new config wants the associated mask enabled,
281 * we must clear the associated from the active configuration
282 * before we apply the new config */
283 if (iwl_is_associated(priv) && new_assoc) {
284 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
285 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
286
287 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
288 sizeof(struct iwl_rxon_cmd),
289 &priv->active_rxon);
290
291 /* If the mask clearing failed then we set
292 * active_rxon back to what it was previously */
293 if (ret) {
294 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
295 IWL_ERROR("Error clearing ASSOC_MSK (%d)\n", ret);
296 return ret;
297 }
298 }
299
300 IWL_DEBUG_INFO("Sending RXON\n"
301 "* with%s RXON_FILTER_ASSOC_MSK\n"
302 "* channel = %d\n"
303 "* bssid = %s\n",
304 (new_assoc ? "" : "out"),
305 le16_to_cpu(priv->staging_rxon.channel),
306 print_mac(mac, priv->staging_rxon.bssid_addr));
307
308 iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
309
310 /* Apply the new configuration
311 * RXON unassoc clears the station table in uCode, send it before
312 * we add the bcast station. If assoc bit is set, we will send RXON
313 * after having added the bcast and bssid station.
314 */
315 if (!new_assoc) {
316 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
317 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
318 if (ret) {
319 IWL_ERROR("Error setting new RXON (%d)\n", ret);
320 return ret;
321 }
322 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
323 }
324
325 iwl_clear_stations_table(priv);
326
327 if (!priv->error_recovering)
328 priv->start_calib = 0;
329
330 /* Add the broadcast address so we can send broadcast frames */
331 if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
332 IWL_INVALID_STATION) {
333 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
334 return -EIO;
335 }
336
337 /* If we have set the ASSOC_MSK and we are in BSS mode then
338 * add the IWL_AP_ID to the station rate table */
339 if (new_assoc) {
340 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
341 ret = iwl_rxon_add_station(priv,
342 priv->active_rxon.bssid_addr, 1);
343 if (ret == IWL_INVALID_STATION) {
344 IWL_ERROR("Error adding AP address for TX.\n");
345 return -EIO;
346 }
347 priv->assoc_station_added = 1;
348 if (priv->default_wep_key &&
349 iwl_send_static_wepkey_cmd(priv, 0))
350 IWL_ERROR("Could not send WEP static key.\n");
351 }
352
353 /* Apply the new configuration
354 * RXON assoc doesn't clear the station table in uCode,
355 */
356 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
357 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
358 if (ret) {
359 IWL_ERROR("Error setting new RXON (%d)\n", ret);
360 return ret;
361 }
362 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
363 }
364
365 iwl_init_sensitivity(priv);
366
367 /* If we issue a new RXON command which required a tune then we must
368 * send a new TXPOWER command or we won't be able to Tx any frames */
369 ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
370 if (ret) {
371 IWL_ERROR("Error sending TX power (%d)\n", ret);
372 return ret;
373 }
374
375 return 0;
376 }
377
378 void iwl4965_update_chain_flags(struct iwl_priv *priv)
379 {
380
381 iwl_set_rxon_chain(priv);
382 iwl4965_commit_rxon(priv);
383 }
384
385 static int iwl4965_send_bt_config(struct iwl_priv *priv)
386 {
387 struct iwl4965_bt_cmd bt_cmd = {
388 .flags = 3,
389 .lead_time = 0xAA,
390 .max_kill = 1,
391 .kill_ack_mask = 0,
392 .kill_cts_mask = 0,
393 };
394
395 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
396 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
397 }
398
399 static void iwl_clear_free_frames(struct iwl_priv *priv)
400 {
401 struct list_head *element;
402
403 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
404 priv->frames_count);
405
406 while (!list_empty(&priv->free_frames)) {
407 element = priv->free_frames.next;
408 list_del(element);
409 kfree(list_entry(element, struct iwl_frame, list));
410 priv->frames_count--;
411 }
412
413 if (priv->frames_count) {
414 IWL_WARNING("%d frames still in use. Did we lose one?\n",
415 priv->frames_count);
416 priv->frames_count = 0;
417 }
418 }
419
420 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
421 {
422 struct iwl_frame *frame;
423 struct list_head *element;
424 if (list_empty(&priv->free_frames)) {
425 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
426 if (!frame) {
427 IWL_ERROR("Could not allocate frame!\n");
428 return NULL;
429 }
430
431 priv->frames_count++;
432 return frame;
433 }
434
435 element = priv->free_frames.next;
436 list_del(element);
437 return list_entry(element, struct iwl_frame, list);
438 }
439
440 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
441 {
442 memset(frame, 0, sizeof(*frame));
443 list_add(&frame->list, &priv->free_frames);
444 }
445
446 static unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
447 struct ieee80211_hdr *hdr,
448 const u8 *dest, int left)
449 {
450 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
451 ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
452 (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
453 return 0;
454
455 if (priv->ibss_beacon->len > left)
456 return 0;
457
458 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
459
460 return priv->ibss_beacon->len;
461 }
462
463 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
464 {
465 int i;
466 int rate_mask;
467
468 /* Set rate mask*/
469 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
470 rate_mask = priv->active_rate_basic & 0xF;
471 else
472 rate_mask = priv->active_rate_basic & 0xFF0;
473
474 /* Find lowest valid rate */
475 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
476 i = iwl_rates[i].next_ieee) {
477 if (rate_mask & (1 << i))
478 return iwl_rates[i].plcp;
479 }
480
481 /* No valid rate was found. Assign the lowest one */
482 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
483 return IWL_RATE_1M_PLCP;
484 else
485 return IWL_RATE_6M_PLCP;
486 }
487
488 unsigned int iwl4965_hw_get_beacon_cmd(struct iwl_priv *priv,
489 struct iwl_frame *frame, u8 rate)
490 {
491 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
492 unsigned int frame_size;
493
494 tx_beacon_cmd = &frame->u.beacon;
495 memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
496
497 tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
498 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
499
500 frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
501 iwl_bcast_addr,
502 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
503
504 BUG_ON(frame_size > MAX_MPDU_SIZE);
505 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
506
507 if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
508 tx_beacon_cmd->tx.rate_n_flags =
509 iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
510 else
511 tx_beacon_cmd->tx.rate_n_flags =
512 iwl_hw_set_rate_n_flags(rate, 0);
513
514 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
515 TX_CMD_FLG_TSF_MSK |
516 TX_CMD_FLG_STA_RATE_MSK;
517
518 return sizeof(*tx_beacon_cmd) + frame_size;
519 }
520 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
521 {
522 struct iwl_frame *frame;
523 unsigned int frame_size;
524 int rc;
525 u8 rate;
526
527 frame = iwl_get_free_frame(priv);
528
529 if (!frame) {
530 IWL_ERROR("Could not obtain free frame buffer for beacon "
531 "command.\n");
532 return -ENOMEM;
533 }
534
535 rate = iwl4965_rate_get_lowest_plcp(priv);
536
537 frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
538
539 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
540 &frame->u.cmd[0]);
541
542 iwl_free_frame(priv, frame);
543
544 return rc;
545 }
546
547 /******************************************************************************
548 *
549 * Misc. internal state and helper functions
550 *
551 ******************************************************************************/
552
553 static void iwl4965_ht_conf(struct iwl_priv *priv,
554 struct ieee80211_bss_conf *bss_conf)
555 {
556 struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
557 struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
558 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
559
560 IWL_DEBUG_MAC80211("enter: \n");
561
562 iwl_conf->is_ht = bss_conf->assoc_ht;
563
564 if (!iwl_conf->is_ht)
565 return;
566
567 priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
568
569 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
570 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
571 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
572 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
573
574 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
575 iwl_conf->max_amsdu_size =
576 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
577
578 iwl_conf->supported_chan_width =
579 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
580 iwl_conf->extension_chan_offset =
581 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
582 /* If no above or below channel supplied disable FAT channel */
583 if (iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_ABOVE &&
584 iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_BELOW) {
585 iwl_conf->extension_chan_offset = IEEE80211_HT_IE_CHA_SEC_NONE;
586 iwl_conf->supported_chan_width = 0;
587 }
588
589 memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
590
591 iwl_conf->control_channel = ht_bss_conf->primary_channel;
592 iwl_conf->tx_chan_width =
593 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
594 iwl_conf->ht_protection =
595 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
596 iwl_conf->non_GF_STA_present =
597 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
598
599 IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
600 IWL_DEBUG_MAC80211("leave\n");
601 }
602
603 /*
604 * QoS support
605 */
606 static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
607 {
608 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
609 return;
610
611 if (!priv->qos_data.qos_enable)
612 return;
613
614 priv->qos_data.def_qos_parm.qos_flags = 0;
615
616 if (priv->qos_data.qos_cap.q_AP.queue_request &&
617 !priv->qos_data.qos_cap.q_AP.txop_request)
618 priv->qos_data.def_qos_parm.qos_flags |=
619 QOS_PARAM_FLG_TXOP_TYPE_MSK;
620 if (priv->qos_data.qos_active)
621 priv->qos_data.def_qos_parm.qos_flags |=
622 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
623
624 if (priv->current_ht_config.is_ht)
625 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
626
627 if (force || iwl_is_associated(priv)) {
628 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
629 priv->qos_data.qos_active,
630 priv->qos_data.def_qos_parm.qos_flags);
631
632 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
633 sizeof(struct iwl_qosparam_cmd),
634 &priv->qos_data.def_qos_parm, NULL);
635 }
636 }
637
638 #define MAX_UCODE_BEACON_INTERVAL 4096
639
640 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
641 {
642 u16 new_val = 0;
643 u16 beacon_factor = 0;
644
645 beacon_factor =
646 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
647 / MAX_UCODE_BEACON_INTERVAL;
648 new_val = beacon_val / beacon_factor;
649
650 return cpu_to_le16(new_val);
651 }
652
653 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
654 {
655 u64 interval_tm_unit;
656 u64 tsf, result;
657 unsigned long flags;
658 struct ieee80211_conf *conf = NULL;
659 u16 beacon_int = 0;
660
661 conf = ieee80211_get_hw_conf(priv->hw);
662
663 spin_lock_irqsave(&priv->lock, flags);
664 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
665 priv->rxon_timing.timestamp.dw[0] =
666 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
667
668 priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
669
670 tsf = priv->timestamp;
671
672 beacon_int = priv->beacon_int;
673 spin_unlock_irqrestore(&priv->lock, flags);
674
675 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
676 if (beacon_int == 0) {
677 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
678 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
679 } else {
680 priv->rxon_timing.beacon_interval =
681 cpu_to_le16(beacon_int);
682 priv->rxon_timing.beacon_interval =
683 iwl4965_adjust_beacon_interval(
684 le16_to_cpu(priv->rxon_timing.beacon_interval));
685 }
686
687 priv->rxon_timing.atim_window = 0;
688 } else {
689 priv->rxon_timing.beacon_interval =
690 iwl4965_adjust_beacon_interval(conf->beacon_int);
691 /* TODO: we need to get atim_window from upper stack
692 * for now we set to 0 */
693 priv->rxon_timing.atim_window = 0;
694 }
695
696 interval_tm_unit =
697 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
698 result = do_div(tsf, interval_tm_unit);
699 priv->rxon_timing.beacon_init_val =
700 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
701
702 IWL_DEBUG_ASSOC
703 ("beacon interval %d beacon timer %d beacon tim %d\n",
704 le16_to_cpu(priv->rxon_timing.beacon_interval),
705 le32_to_cpu(priv->rxon_timing.beacon_init_val),
706 le16_to_cpu(priv->rxon_timing.atim_window));
707 }
708
709 static void iwl_set_flags_for_band(struct iwl_priv *priv,
710 enum ieee80211_band band)
711 {
712 if (band == IEEE80211_BAND_5GHZ) {
713 priv->staging_rxon.flags &=
714 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
715 | RXON_FLG_CCK_MSK);
716 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
717 } else {
718 /* Copied from iwl4965_post_associate() */
719 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
720 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
721 else
722 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
723
724 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
725 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
726
727 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
728 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
729 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
730 }
731 }
732
733 /*
734 * initialize rxon structure with default values from eeprom
735 */
736 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
737 {
738 const struct iwl_channel_info *ch_info;
739
740 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
741
742 switch (priv->iw_mode) {
743 case IEEE80211_IF_TYPE_AP:
744 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
745 break;
746
747 case IEEE80211_IF_TYPE_STA:
748 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
749 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
750 break;
751
752 case IEEE80211_IF_TYPE_IBSS:
753 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
754 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
755 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
756 RXON_FILTER_ACCEPT_GRP_MSK;
757 break;
758
759 case IEEE80211_IF_TYPE_MNTR:
760 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
761 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
762 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
763 break;
764 default:
765 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
766 break;
767 }
768
769 #if 0
770 /* TODO: Figure out when short_preamble would be set and cache from
771 * that */
772 if (!hw_to_local(priv->hw)->short_preamble)
773 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
774 else
775 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
776 #endif
777
778 ch_info = iwl_get_channel_info(priv, priv->band,
779 le16_to_cpu(priv->active_rxon.channel));
780
781 if (!ch_info)
782 ch_info = &priv->channel_info[0];
783
784 /*
785 * in some case A channels are all non IBSS
786 * in this case force B/G channel
787 */
788 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
789 !(is_channel_ibss(ch_info)))
790 ch_info = &priv->channel_info[0];
791
792 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
793 priv->band = ch_info->band;
794
795 iwl_set_flags_for_band(priv, priv->band);
796
797 priv->staging_rxon.ofdm_basic_rates =
798 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
799 priv->staging_rxon.cck_basic_rates =
800 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
801
802 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
803 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
804 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
805 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
806 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
807 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
808 iwl_set_rxon_chain(priv);
809 }
810
811 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
812 {
813 priv->iw_mode = mode;
814
815 iwl4965_connection_init_rx_config(priv);
816 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
817
818 iwl_clear_stations_table(priv);
819
820 /* dont commit rxon if rf-kill is on*/
821 if (!iwl_is_ready_rf(priv))
822 return -EAGAIN;
823
824 cancel_delayed_work(&priv->scan_check);
825 if (iwl_scan_cancel_timeout(priv, 100)) {
826 IWL_WARNING("Aborted scan still in progress after 100ms\n");
827 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
828 return -EAGAIN;
829 }
830
831 iwl4965_commit_rxon(priv);
832
833 return 0;
834 }
835
836 static void iwl4965_set_rate(struct iwl_priv *priv)
837 {
838 const struct ieee80211_supported_band *hw = NULL;
839 struct ieee80211_rate *rate;
840 int i;
841
842 hw = iwl_get_hw_mode(priv, priv->band);
843 if (!hw) {
844 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
845 return;
846 }
847
848 priv->active_rate = 0;
849 priv->active_rate_basic = 0;
850
851 for (i = 0; i < hw->n_bitrates; i++) {
852 rate = &(hw->bitrates[i]);
853 if (rate->hw_value < IWL_RATE_COUNT)
854 priv->active_rate |= (1 << rate->hw_value);
855 }
856
857 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
858 priv->active_rate, priv->active_rate_basic);
859
860 /*
861 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
862 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
863 * OFDM
864 */
865 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
866 priv->staging_rxon.cck_basic_rates =
867 ((priv->active_rate_basic &
868 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
869 else
870 priv->staging_rxon.cck_basic_rates =
871 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
872
873 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
874 priv->staging_rxon.ofdm_basic_rates =
875 ((priv->active_rate_basic &
876 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
877 IWL_FIRST_OFDM_RATE) & 0xFF;
878 else
879 priv->staging_rxon.ofdm_basic_rates =
880 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
881 }
882
883 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
884
885 #include "iwl-spectrum.h"
886
887 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
888 #define BEACON_TIME_MASK_HIGH 0xFF000000
889 #define TIME_UNIT 1024
890
891 /*
892 * extended beacon time format
893 * time in usec will be changed into a 32-bit value in 8:24 format
894 * the high 1 byte is the beacon counts
895 * the lower 3 bytes is the time in usec within one beacon interval
896 */
897
898 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
899 {
900 u32 quot;
901 u32 rem;
902 u32 interval = beacon_interval * 1024;
903
904 if (!interval || !usec)
905 return 0;
906
907 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
908 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
909
910 return (quot << 24) + rem;
911 }
912
913 /* base is usually what we get from ucode with each received frame,
914 * the same as HW timer counter counting down
915 */
916
917 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
918 {
919 u32 base_low = base & BEACON_TIME_MASK_LOW;
920 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
921 u32 interval = beacon_interval * TIME_UNIT;
922 u32 res = (base & BEACON_TIME_MASK_HIGH) +
923 (addon & BEACON_TIME_MASK_HIGH);
924
925 if (base_low > addon_low)
926 res += base_low - addon_low;
927 else if (base_low < addon_low) {
928 res += interval + base_low - addon_low;
929 res += (1 << 24);
930 } else
931 res += (1 << 24);
932
933 return cpu_to_le32(res);
934 }
935
936 static int iwl4965_get_measurement(struct iwl_priv *priv,
937 struct ieee80211_measurement_params *params,
938 u8 type)
939 {
940 struct iwl4965_spectrum_cmd spectrum;
941 struct iwl_rx_packet *res;
942 struct iwl_host_cmd cmd = {
943 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
944 .data = (void *)&spectrum,
945 .meta.flags = CMD_WANT_SKB,
946 };
947 u32 add_time = le64_to_cpu(params->start_time);
948 int rc;
949 int spectrum_resp_status;
950 int duration = le16_to_cpu(params->duration);
951
952 if (iwl_is_associated(priv))
953 add_time =
954 iwl4965_usecs_to_beacons(
955 le64_to_cpu(params->start_time) - priv->last_tsf,
956 le16_to_cpu(priv->rxon_timing.beacon_interval));
957
958 memset(&spectrum, 0, sizeof(spectrum));
959
960 spectrum.channel_count = cpu_to_le16(1);
961 spectrum.flags =
962 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
963 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
964 cmd.len = sizeof(spectrum);
965 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
966
967 if (iwl_is_associated(priv))
968 spectrum.start_time =
969 iwl4965_add_beacon_time(priv->last_beacon_time,
970 add_time,
971 le16_to_cpu(priv->rxon_timing.beacon_interval));
972 else
973 spectrum.start_time = 0;
974
975 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
976 spectrum.channels[0].channel = params->channel;
977 spectrum.channels[0].type = type;
978 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
979 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
980 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
981
982 rc = iwl_send_cmd_sync(priv, &cmd);
983 if (rc)
984 return rc;
985
986 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
987 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
988 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
989 rc = -EIO;
990 }
991
992 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
993 switch (spectrum_resp_status) {
994 case 0: /* Command will be handled */
995 if (res->u.spectrum.id != 0xff) {
996 IWL_DEBUG_INFO
997 ("Replaced existing measurement: %d\n",
998 res->u.spectrum.id);
999 priv->measurement_status &= ~MEASUREMENT_READY;
1000 }
1001 priv->measurement_status |= MEASUREMENT_ACTIVE;
1002 rc = 0;
1003 break;
1004
1005 case 1: /* Command will not be handled */
1006 rc = -EAGAIN;
1007 break;
1008 }
1009
1010 dev_kfree_skb_any(cmd.meta.u.skb);
1011
1012 return rc;
1013 }
1014 #endif
1015
1016 /******************************************************************************
1017 *
1018 * Generic RX handler implementations
1019 *
1020 ******************************************************************************/
1021 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1022 struct iwl_rx_mem_buffer *rxb)
1023 {
1024 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1025 struct iwl_alive_resp *palive;
1026 struct delayed_work *pwork;
1027
1028 palive = &pkt->u.alive_frame;
1029
1030 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1031 "0x%01X 0x%01X\n",
1032 palive->is_valid, palive->ver_type,
1033 palive->ver_subtype);
1034
1035 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1036 IWL_DEBUG_INFO("Initialization Alive received.\n");
1037 memcpy(&priv->card_alive_init,
1038 &pkt->u.alive_frame,
1039 sizeof(struct iwl_init_alive_resp));
1040 pwork = &priv->init_alive_start;
1041 } else {
1042 IWL_DEBUG_INFO("Runtime Alive received.\n");
1043 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1044 sizeof(struct iwl_alive_resp));
1045 pwork = &priv->alive_start;
1046 }
1047
1048 /* We delay the ALIVE response by 5ms to
1049 * give the HW RF Kill time to activate... */
1050 if (palive->is_valid == UCODE_VALID_OK)
1051 queue_delayed_work(priv->workqueue, pwork,
1052 msecs_to_jiffies(5));
1053 else
1054 IWL_WARNING("uCode did not respond OK.\n");
1055 }
1056
1057 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1058 struct iwl_rx_mem_buffer *rxb)
1059 {
1060 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1061
1062 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1063 "seq 0x%04X ser 0x%08X\n",
1064 le32_to_cpu(pkt->u.err_resp.error_type),
1065 get_cmd_string(pkt->u.err_resp.cmd_id),
1066 pkt->u.err_resp.cmd_id,
1067 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1068 le32_to_cpu(pkt->u.err_resp.error_info));
1069 }
1070
1071 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1072
1073 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1074 {
1075 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1076 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1077 struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1078 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1079 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1080 rxon->channel = csa->channel;
1081 priv->staging_rxon.channel = csa->channel;
1082 }
1083
1084 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1085 struct iwl_rx_mem_buffer *rxb)
1086 {
1087 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
1088 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1089 struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1090
1091 if (!report->state) {
1092 IWL_DEBUG(IWL_DL_11H,
1093 "Spectrum Measure Notification: Start\n");
1094 return;
1095 }
1096
1097 memcpy(&priv->measure_report, report, sizeof(*report));
1098 priv->measurement_status |= MEASUREMENT_READY;
1099 #endif
1100 }
1101
1102 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1103 struct iwl_rx_mem_buffer *rxb)
1104 {
1105 #ifdef CONFIG_IWLWIFI_DEBUG
1106 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1107 struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1108 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1109 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1110 #endif
1111 }
1112
1113 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1114 struct iwl_rx_mem_buffer *rxb)
1115 {
1116 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1117 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1118 "notification for %s:\n",
1119 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1120 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1121 }
1122
1123 static void iwl4965_bg_beacon_update(struct work_struct *work)
1124 {
1125 struct iwl_priv *priv =
1126 container_of(work, struct iwl_priv, beacon_update);
1127 struct sk_buff *beacon;
1128
1129 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1130 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1131
1132 if (!beacon) {
1133 IWL_ERROR("update beacon failed\n");
1134 return;
1135 }
1136
1137 mutex_lock(&priv->mutex);
1138 /* new beacon skb is allocated every time; dispose previous.*/
1139 if (priv->ibss_beacon)
1140 dev_kfree_skb(priv->ibss_beacon);
1141
1142 priv->ibss_beacon = beacon;
1143 mutex_unlock(&priv->mutex);
1144
1145 iwl4965_send_beacon_cmd(priv);
1146 }
1147
1148 /**
1149 * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1150 *
1151 * This callback is provided in order to send a statistics request.
1152 *
1153 * This timer function is continually reset to execute within
1154 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1155 * was received. We need to ensure we receive the statistics in order
1156 * to update the temperature used for calibrating the TXPOWER.
1157 */
1158 static void iwl4965_bg_statistics_periodic(unsigned long data)
1159 {
1160 struct iwl_priv *priv = (struct iwl_priv *)data;
1161
1162 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1163 return;
1164
1165 iwl_send_statistics_request(priv, CMD_ASYNC);
1166 }
1167
1168 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1169 struct iwl_rx_mem_buffer *rxb)
1170 {
1171 #ifdef CONFIG_IWLWIFI_DEBUG
1172 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1173 struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1174 u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1175
1176 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1177 "tsf %d %d rate %d\n",
1178 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1179 beacon->beacon_notify_hdr.failure_frame,
1180 le32_to_cpu(beacon->ibss_mgr_status),
1181 le32_to_cpu(beacon->high_tsf),
1182 le32_to_cpu(beacon->low_tsf), rate);
1183 #endif
1184
1185 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
1186 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1187 queue_work(priv->workqueue, &priv->beacon_update);
1188 }
1189
1190 /* Handle notification from uCode that card's power state is changing
1191 * due to software, hardware, or critical temperature RFKILL */
1192 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1193 struct iwl_rx_mem_buffer *rxb)
1194 {
1195 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1196 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1197 unsigned long status = priv->status;
1198
1199 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1200 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1201 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1202
1203 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1204 RF_CARD_DISABLED)) {
1205
1206 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1207 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1208
1209 if (!iwl_grab_nic_access(priv)) {
1210 iwl_write_direct32(
1211 priv, HBUS_TARG_MBX_C,
1212 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1213
1214 iwl_release_nic_access(priv);
1215 }
1216
1217 if (!(flags & RXON_CARD_DISABLED)) {
1218 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1219 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1220 if (!iwl_grab_nic_access(priv)) {
1221 iwl_write_direct32(
1222 priv, HBUS_TARG_MBX_C,
1223 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1224
1225 iwl_release_nic_access(priv);
1226 }
1227 }
1228
1229 if (flags & RF_CARD_DISABLED) {
1230 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1231 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1232 iwl_read32(priv, CSR_UCODE_DRV_GP1);
1233 if (!iwl_grab_nic_access(priv))
1234 iwl_release_nic_access(priv);
1235 }
1236 }
1237
1238 if (flags & HW_CARD_DISABLED)
1239 set_bit(STATUS_RF_KILL_HW, &priv->status);
1240 else
1241 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1242
1243
1244 if (flags & SW_CARD_DISABLED)
1245 set_bit(STATUS_RF_KILL_SW, &priv->status);
1246 else
1247 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1248
1249 if (!(flags & RXON_CARD_DISABLED))
1250 iwl_scan_cancel(priv);
1251
1252 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1253 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1254 (test_bit(STATUS_RF_KILL_SW, &status) !=
1255 test_bit(STATUS_RF_KILL_SW, &priv->status)))
1256 queue_work(priv->workqueue, &priv->rf_kill);
1257 else
1258 wake_up_interruptible(&priv->wait_command_queue);
1259 }
1260
1261 int iwl4965_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
1262 {
1263 int ret;
1264 unsigned long flags;
1265
1266 spin_lock_irqsave(&priv->lock, flags);
1267 ret = iwl_grab_nic_access(priv);
1268 if (ret)
1269 goto err;
1270
1271 if (src == IWL_PWR_SRC_VAUX) {
1272 u32 val;
1273 ret = pci_read_config_dword(priv->pci_dev, PCI_CFG_POWER_SOURCE,
1274 &val);
1275
1276 if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT)
1277 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1278 APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
1279 ~APMG_PS_CTRL_MSK_PWR_SRC);
1280 } else {
1281 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1282 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
1283 ~APMG_PS_CTRL_MSK_PWR_SRC);
1284 }
1285
1286 iwl_release_nic_access(priv);
1287 err:
1288 spin_unlock_irqrestore(&priv->lock, flags);
1289 return ret;
1290 }
1291
1292 /**
1293 * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1294 *
1295 * Setup the RX handlers for each of the reply types sent from the uCode
1296 * to the host.
1297 *
1298 * This function chains into the hardware specific files for them to setup
1299 * any hardware specific handlers as well.
1300 */
1301 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1302 {
1303 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1304 priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1305 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1306 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1307 iwl4965_rx_spectrum_measure_notif;
1308 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1309 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1310 iwl4965_rx_pm_debug_statistics_notif;
1311 priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1312
1313 /*
1314 * The same handler is used for both the REPLY to a discrete
1315 * statistics request from the host as well as for the periodic
1316 * statistics notifications (after received beacons) from the uCode.
1317 */
1318 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1319 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1320
1321 iwl_setup_rx_scan_handlers(priv);
1322
1323 /* status change handler */
1324 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1325
1326 priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1327 iwl_rx_missed_beacon_notif;
1328 /* Rx handlers */
1329 priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1330 priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1331 /* block ack */
1332 priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1333 /* Set up hardware specific Rx handlers */
1334 priv->cfg->ops->lib->rx_handler_setup(priv);
1335 }
1336
1337 /*
1338 * this should be called while priv->lock is locked
1339 */
1340 static void __iwl_rx_replenish(struct iwl_priv *priv)
1341 {
1342 iwl_rx_allocate(priv);
1343 iwl_rx_queue_restock(priv);
1344 }
1345
1346
1347 /**
1348 * iwl_rx_handle - Main entry function for receiving responses from uCode
1349 *
1350 * Uses the priv->rx_handlers callback function array to invoke
1351 * the appropriate handlers, including command responses,
1352 * frame-received notifications, and other notifications.
1353 */
1354 void iwl_rx_handle(struct iwl_priv *priv)
1355 {
1356 struct iwl_rx_mem_buffer *rxb;
1357 struct iwl_rx_packet *pkt;
1358 struct iwl_rx_queue *rxq = &priv->rxq;
1359 u32 r, i;
1360 int reclaim;
1361 unsigned long flags;
1362 u8 fill_rx = 0;
1363 u32 count = 8;
1364
1365 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1366 * buffer that the driver may process (last buffer filled by ucode). */
1367 r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1368 i = rxq->read;
1369
1370 /* Rx interrupt, but nothing sent from uCode */
1371 if (i == r)
1372 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1373
1374 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1375 fill_rx = 1;
1376
1377 while (i != r) {
1378 rxb = rxq->queue[i];
1379
1380 /* If an RXB doesn't have a Rx queue slot associated with it,
1381 * then a bug has been introduced in the queue refilling
1382 * routines -- catch it here */
1383 BUG_ON(rxb == NULL);
1384
1385 rxq->queue[i] = NULL;
1386
1387 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1388 priv->hw_params.rx_buf_size,
1389 PCI_DMA_FROMDEVICE);
1390 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1391
1392 /* Reclaim a command buffer only if this packet is a response
1393 * to a (driver-originated) command.
1394 * If the packet (e.g. Rx frame) originated from uCode,
1395 * there is no command buffer to reclaim.
1396 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1397 * but apparently a few don't get set; catch them here. */
1398 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1399 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1400 (pkt->hdr.cmd != REPLY_RX) &&
1401 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1402 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1403 (pkt->hdr.cmd != REPLY_TX);
1404
1405 /* Based on type of command response or notification,
1406 * handle those that need handling via function in
1407 * rx_handlers table. See iwl4965_setup_rx_handlers() */
1408 if (priv->rx_handlers[pkt->hdr.cmd]) {
1409 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1410 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1411 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1412 } else {
1413 /* No handling needed */
1414 IWL_DEBUG(IWL_DL_RX,
1415 "r %d i %d No handler needed for %s, 0x%02x\n",
1416 r, i, get_cmd_string(pkt->hdr.cmd),
1417 pkt->hdr.cmd);
1418 }
1419
1420 if (reclaim) {
1421 /* Invoke any callbacks, transfer the skb to caller, and
1422 * fire off the (possibly) blocking iwl_send_cmd()
1423 * as we reclaim the driver command queue */
1424 if (rxb && rxb->skb)
1425 iwl_tx_cmd_complete(priv, rxb);
1426 else
1427 IWL_WARNING("Claim null rxb?\n");
1428 }
1429
1430 /* For now we just don't re-use anything. We can tweak this
1431 * later to try and re-use notification packets and SKBs that
1432 * fail to Rx correctly */
1433 if (rxb->skb != NULL) {
1434 priv->alloc_rxb_skb--;
1435 dev_kfree_skb_any(rxb->skb);
1436 rxb->skb = NULL;
1437 }
1438
1439 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
1440 priv->hw_params.rx_buf_size,
1441 PCI_DMA_FROMDEVICE);
1442 spin_lock_irqsave(&rxq->lock, flags);
1443 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1444 spin_unlock_irqrestore(&rxq->lock, flags);
1445 i = (i + 1) & RX_QUEUE_MASK;
1446 /* If there are a lot of unused frames,
1447 * restock the Rx queue so ucode wont assert. */
1448 if (fill_rx) {
1449 count++;
1450 if (count >= 8) {
1451 priv->rxq.read = i;
1452 __iwl_rx_replenish(priv);
1453 count = 0;
1454 }
1455 }
1456 }
1457
1458 /* Backtrack one entry */
1459 priv->rxq.read = i;
1460 iwl_rx_queue_restock(priv);
1461 }
1462
1463 #ifdef CONFIG_IWLWIFI_DEBUG
1464 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
1465 {
1466 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1467 DECLARE_MAC_BUF(mac);
1468
1469 IWL_DEBUG_RADIO("RX CONFIG:\n");
1470 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1471 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1472 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1473 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1474 le32_to_cpu(rxon->filter_flags));
1475 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1476 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1477 rxon->ofdm_basic_rates);
1478 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1479 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
1480 print_mac(mac, rxon->node_addr));
1481 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
1482 print_mac(mac, rxon->bssid_addr));
1483 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1484 }
1485 #endif
1486
1487 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
1488 {
1489 IWL_DEBUG_ISR("Enabling interrupts\n");
1490 set_bit(STATUS_INT_ENABLED, &priv->status);
1491 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1492 }
1493
1494 /* call this function to flush any scheduled tasklet */
1495 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1496 {
1497 /* wait to make sure we flush pedding tasklet*/
1498 synchronize_irq(priv->pci_dev->irq);
1499 tasklet_kill(&priv->irq_tasklet);
1500 }
1501
1502 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
1503 {
1504 clear_bit(STATUS_INT_ENABLED, &priv->status);
1505
1506 /* disable interrupts from uCode/NIC to host */
1507 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1508
1509 /* acknowledge/clear/reset any interrupts still pending
1510 * from uCode or flow handler (Rx/Tx DMA) */
1511 iwl_write32(priv, CSR_INT, 0xffffffff);
1512 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1513 IWL_DEBUG_ISR("Disabled interrupts\n");
1514 }
1515
1516
1517 /**
1518 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
1519 */
1520 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
1521 {
1522 /* Set the FW error flag -- cleared on iwl4965_down */
1523 set_bit(STATUS_FW_ERROR, &priv->status);
1524
1525 /* Cancel currently queued command. */
1526 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1527
1528 #ifdef CONFIG_IWLWIFI_DEBUG
1529 if (priv->debug_level & IWL_DL_FW_ERRORS) {
1530 iwl_dump_nic_error_log(priv);
1531 iwl_dump_nic_event_log(priv);
1532 iwl4965_print_rx_config_cmd(priv);
1533 }
1534 #endif
1535
1536 wake_up_interruptible(&priv->wait_command_queue);
1537
1538 /* Keep the restart process from trying to send host
1539 * commands by clearing the INIT status bit */
1540 clear_bit(STATUS_READY, &priv->status);
1541
1542 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1543 IWL_DEBUG(IWL_DL_FW_ERRORS,
1544 "Restarting adapter due to uCode error.\n");
1545
1546 if (iwl_is_associated(priv)) {
1547 memcpy(&priv->recovery_rxon, &priv->active_rxon,
1548 sizeof(priv->recovery_rxon));
1549 priv->error_recovering = 1;
1550 }
1551 if (priv->cfg->mod_params->restart_fw)
1552 queue_work(priv->workqueue, &priv->restart);
1553 }
1554 }
1555
1556 static void iwl4965_error_recovery(struct iwl_priv *priv)
1557 {
1558 unsigned long flags;
1559
1560 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1561 sizeof(priv->staging_rxon));
1562 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1563 iwl4965_commit_rxon(priv);
1564
1565 iwl_rxon_add_station(priv, priv->bssid, 1);
1566
1567 spin_lock_irqsave(&priv->lock, flags);
1568 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1569 priv->error_recovering = 0;
1570 spin_unlock_irqrestore(&priv->lock, flags);
1571 }
1572
1573 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
1574 {
1575 u32 inta, handled = 0;
1576 u32 inta_fh;
1577 unsigned long flags;
1578 #ifdef CONFIG_IWLWIFI_DEBUG
1579 u32 inta_mask;
1580 #endif
1581
1582 spin_lock_irqsave(&priv->lock, flags);
1583
1584 /* Ack/clear/reset pending uCode interrupts.
1585 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1586 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1587 inta = iwl_read32(priv, CSR_INT);
1588 iwl_write32(priv, CSR_INT, inta);
1589
1590 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1591 * Any new interrupts that happen after this, either while we're
1592 * in this tasklet, or later, will show up in next ISR/tasklet. */
1593 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1594 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1595
1596 #ifdef CONFIG_IWLWIFI_DEBUG
1597 if (priv->debug_level & IWL_DL_ISR) {
1598 /* just for debug */
1599 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1600 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1601 inta, inta_mask, inta_fh);
1602 }
1603 #endif
1604
1605 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1606 * atomic, make sure that inta covers all the interrupts that
1607 * we've discovered, even if FH interrupt came in just after
1608 * reading CSR_INT. */
1609 if (inta_fh & CSR49_FH_INT_RX_MASK)
1610 inta |= CSR_INT_BIT_FH_RX;
1611 if (inta_fh & CSR49_FH_INT_TX_MASK)
1612 inta |= CSR_INT_BIT_FH_TX;
1613
1614 /* Now service all interrupt bits discovered above. */
1615 if (inta & CSR_INT_BIT_HW_ERR) {
1616 IWL_ERROR("Microcode HW error detected. Restarting.\n");
1617
1618 /* Tell the device to stop sending interrupts */
1619 iwl4965_disable_interrupts(priv);
1620
1621 iwl4965_irq_handle_error(priv);
1622
1623 handled |= CSR_INT_BIT_HW_ERR;
1624
1625 spin_unlock_irqrestore(&priv->lock, flags);
1626
1627 return;
1628 }
1629
1630 #ifdef CONFIG_IWLWIFI_DEBUG
1631 if (priv->debug_level & (IWL_DL_ISR)) {
1632 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1633 if (inta & CSR_INT_BIT_SCD)
1634 IWL_DEBUG_ISR("Scheduler finished to transmit "
1635 "the frame/frames.\n");
1636
1637 /* Alive notification via Rx interrupt will do the real work */
1638 if (inta & CSR_INT_BIT_ALIVE)
1639 IWL_DEBUG_ISR("Alive interrupt\n");
1640 }
1641 #endif
1642 /* Safely ignore these bits for debug checks below */
1643 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1644
1645 /* HW RF KILL switch toggled */
1646 if (inta & CSR_INT_BIT_RF_KILL) {
1647 int hw_rf_kill = 0;
1648 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1649 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1650 hw_rf_kill = 1;
1651
1652 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1653 hw_rf_kill ? "disable radio":"enable radio");
1654
1655 /* driver only loads ucode once setting the interface up.
1656 * the driver as well won't allow loading if RFKILL is set
1657 * therefore no need to restart the driver from this handler
1658 */
1659 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
1660 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1661
1662 handled |= CSR_INT_BIT_RF_KILL;
1663 }
1664
1665 /* Chip got too hot and stopped itself */
1666 if (inta & CSR_INT_BIT_CT_KILL) {
1667 IWL_ERROR("Microcode CT kill error detected.\n");
1668 handled |= CSR_INT_BIT_CT_KILL;
1669 }
1670
1671 /* Error detected by uCode */
1672 if (inta & CSR_INT_BIT_SW_ERR) {
1673 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
1674 inta);
1675 iwl4965_irq_handle_error(priv);
1676 handled |= CSR_INT_BIT_SW_ERR;
1677 }
1678
1679 /* uCode wakes up after power-down sleep */
1680 if (inta & CSR_INT_BIT_WAKEUP) {
1681 IWL_DEBUG_ISR("Wakeup interrupt\n");
1682 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1683 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1684 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1685 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1686 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1687 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1688 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1689
1690 handled |= CSR_INT_BIT_WAKEUP;
1691 }
1692
1693 /* All uCode command responses, including Tx command responses,
1694 * Rx "responses" (frame-received notification), and other
1695 * notifications from uCode come through here*/
1696 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1697 iwl_rx_handle(priv);
1698 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1699 }
1700
1701 if (inta & CSR_INT_BIT_FH_TX) {
1702 IWL_DEBUG_ISR("Tx interrupt\n");
1703 handled |= CSR_INT_BIT_FH_TX;
1704 /* FH finished to write, send event */
1705 priv->ucode_write_complete = 1;
1706 wake_up_interruptible(&priv->wait_command_queue);
1707 }
1708
1709 if (inta & ~handled)
1710 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1711
1712 if (inta & ~CSR_INI_SET_MASK) {
1713 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1714 inta & ~CSR_INI_SET_MASK);
1715 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
1716 }
1717
1718 /* Re-enable all interrupts */
1719 /* only Re-enable if diabled by irq */
1720 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1721 iwl4965_enable_interrupts(priv);
1722
1723 #ifdef CONFIG_IWLWIFI_DEBUG
1724 if (priv->debug_level & (IWL_DL_ISR)) {
1725 inta = iwl_read32(priv, CSR_INT);
1726 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1727 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1728 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1729 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1730 }
1731 #endif
1732 spin_unlock_irqrestore(&priv->lock, flags);
1733 }
1734
1735 static irqreturn_t iwl4965_isr(int irq, void *data)
1736 {
1737 struct iwl_priv *priv = data;
1738 u32 inta, inta_mask;
1739 u32 inta_fh;
1740 if (!priv)
1741 return IRQ_NONE;
1742
1743 spin_lock(&priv->lock);
1744
1745 /* Disable (but don't clear!) interrupts here to avoid
1746 * back-to-back ISRs and sporadic interrupts from our NIC.
1747 * If we have something to service, the tasklet will re-enable ints.
1748 * If we *don't* have something, we'll re-enable before leaving here. */
1749 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
1750 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1751
1752 /* Discover which interrupts are active/pending */
1753 inta = iwl_read32(priv, CSR_INT);
1754 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1755
1756 /* Ignore interrupt if there's nothing in NIC to service.
1757 * This may be due to IRQ shared with another device,
1758 * or due to sporadic interrupts thrown from our NIC. */
1759 if (!inta && !inta_fh) {
1760 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1761 goto none;
1762 }
1763
1764 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1765 /* Hardware disappeared. It might have already raised
1766 * an interrupt */
1767 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1768 goto unplugged;
1769 }
1770
1771 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1772 inta, inta_mask, inta_fh);
1773
1774 inta &= ~CSR_INT_BIT_SCD;
1775
1776 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
1777 if (likely(inta || inta_fh))
1778 tasklet_schedule(&priv->irq_tasklet);
1779
1780 unplugged:
1781 spin_unlock(&priv->lock);
1782 return IRQ_HANDLED;
1783
1784 none:
1785 /* re-enable interrupts here since we don't have anything to service. */
1786 /* only Re-enable if diabled by irq */
1787 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1788 iwl4965_enable_interrupts(priv);
1789 spin_unlock(&priv->lock);
1790 return IRQ_NONE;
1791 }
1792
1793 /******************************************************************************
1794 *
1795 * uCode download functions
1796 *
1797 ******************************************************************************/
1798
1799 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
1800 {
1801 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1802 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1803 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1804 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1805 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1806 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1807 }
1808
1809 static void iwl4965_nic_start(struct iwl_priv *priv)
1810 {
1811 /* Remove all resets to allow NIC to operate */
1812 iwl_write32(priv, CSR_RESET, 0);
1813 }
1814
1815
1816 /**
1817 * iwl4965_read_ucode - Read uCode images from disk file.
1818 *
1819 * Copy into buffers for card to fetch via bus-mastering
1820 */
1821 static int iwl4965_read_ucode(struct iwl_priv *priv)
1822 {
1823 struct iwl_ucode *ucode;
1824 int ret;
1825 const struct firmware *ucode_raw;
1826 const char *name = priv->cfg->fw_name;
1827 u8 *src;
1828 size_t len;
1829 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
1830
1831 /* Ask kernel firmware_class module to get the boot firmware off disk.
1832 * request_firmware() is synchronous, file is in memory on return. */
1833 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
1834 if (ret < 0) {
1835 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1836 name, ret);
1837 goto error;
1838 }
1839
1840 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1841 name, ucode_raw->size);
1842
1843 /* Make sure that we got at least our header! */
1844 if (ucode_raw->size < sizeof(*ucode)) {
1845 IWL_ERROR("File size way too small!\n");
1846 ret = -EINVAL;
1847 goto err_release;
1848 }
1849
1850 /* Data from ucode file: header followed by uCode images */
1851 ucode = (void *)ucode_raw->data;
1852
1853 ver = le32_to_cpu(ucode->ver);
1854 inst_size = le32_to_cpu(ucode->inst_size);
1855 data_size = le32_to_cpu(ucode->data_size);
1856 init_size = le32_to_cpu(ucode->init_size);
1857 init_data_size = le32_to_cpu(ucode->init_data_size);
1858 boot_size = le32_to_cpu(ucode->boot_size);
1859
1860 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
1861 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1862 inst_size);
1863 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1864 data_size);
1865 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1866 init_size);
1867 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1868 init_data_size);
1869 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1870 boot_size);
1871
1872 /* Verify size of file vs. image size info in file's header */
1873 if (ucode_raw->size < sizeof(*ucode) +
1874 inst_size + data_size + init_size +
1875 init_data_size + boot_size) {
1876
1877 IWL_DEBUG_INFO("uCode file size %d too small\n",
1878 (int)ucode_raw->size);
1879 ret = -EINVAL;
1880 goto err_release;
1881 }
1882
1883 /* Verify that uCode images will fit in card's SRAM */
1884 if (inst_size > priv->hw_params.max_inst_size) {
1885 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1886 inst_size);
1887 ret = -EINVAL;
1888 goto err_release;
1889 }
1890
1891 if (data_size > priv->hw_params.max_data_size) {
1892 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1893 data_size);
1894 ret = -EINVAL;
1895 goto err_release;
1896 }
1897 if (init_size > priv->hw_params.max_inst_size) {
1898 IWL_DEBUG_INFO
1899 ("uCode init instr len %d too large to fit in\n",
1900 init_size);
1901 ret = -EINVAL;
1902 goto err_release;
1903 }
1904 if (init_data_size > priv->hw_params.max_data_size) {
1905 IWL_DEBUG_INFO
1906 ("uCode init data len %d too large to fit in\n",
1907 init_data_size);
1908 ret = -EINVAL;
1909 goto err_release;
1910 }
1911 if (boot_size > priv->hw_params.max_bsm_size) {
1912 IWL_DEBUG_INFO
1913 ("uCode boot instr len %d too large to fit in\n",
1914 boot_size);
1915 ret = -EINVAL;
1916 goto err_release;
1917 }
1918
1919 /* Allocate ucode buffers for card's bus-master loading ... */
1920
1921 /* Runtime instructions and 2 copies of data:
1922 * 1) unmodified from disk
1923 * 2) backup cache for save/restore during power-downs */
1924 priv->ucode_code.len = inst_size;
1925 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1926
1927 priv->ucode_data.len = data_size;
1928 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1929
1930 priv->ucode_data_backup.len = data_size;
1931 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1932
1933 /* Initialization instructions and data */
1934 if (init_size && init_data_size) {
1935 priv->ucode_init.len = init_size;
1936 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1937
1938 priv->ucode_init_data.len = init_data_size;
1939 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1940
1941 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1942 goto err_pci_alloc;
1943 }
1944
1945 /* Bootstrap (instructions only, no data) */
1946 if (boot_size) {
1947 priv->ucode_boot.len = boot_size;
1948 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1949
1950 if (!priv->ucode_boot.v_addr)
1951 goto err_pci_alloc;
1952 }
1953
1954 /* Copy images into buffers for card's bus-master reads ... */
1955
1956 /* Runtime instructions (first block of data in file) */
1957 src = &ucode->data[0];
1958 len = priv->ucode_code.len;
1959 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1960 memcpy(priv->ucode_code.v_addr, src, len);
1961 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1962 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1963
1964 /* Runtime data (2nd block)
1965 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
1966 src = &ucode->data[inst_size];
1967 len = priv->ucode_data.len;
1968 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1969 memcpy(priv->ucode_data.v_addr, src, len);
1970 memcpy(priv->ucode_data_backup.v_addr, src, len);
1971
1972 /* Initialization instructions (3rd block) */
1973 if (init_size) {
1974 src = &ucode->data[inst_size + data_size];
1975 len = priv->ucode_init.len;
1976 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1977 len);
1978 memcpy(priv->ucode_init.v_addr, src, len);
1979 }
1980
1981 /* Initialization data (4th block) */
1982 if (init_data_size) {
1983 src = &ucode->data[inst_size + data_size + init_size];
1984 len = priv->ucode_init_data.len;
1985 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1986 len);
1987 memcpy(priv->ucode_init_data.v_addr, src, len);
1988 }
1989
1990 /* Bootstrap instructions (5th block) */
1991 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1992 len = priv->ucode_boot.len;
1993 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1994 memcpy(priv->ucode_boot.v_addr, src, len);
1995
1996 /* We have our copies now, allow OS release its copies */
1997 release_firmware(ucode_raw);
1998 return 0;
1999
2000 err_pci_alloc:
2001 IWL_ERROR("failed to allocate pci memory\n");
2002 ret = -ENOMEM;
2003 iwl4965_dealloc_ucode_pci(priv);
2004
2005 err_release:
2006 release_firmware(ucode_raw);
2007
2008 error:
2009 return ret;
2010 }
2011
2012 /**
2013 * iwl_alive_start - called after REPLY_ALIVE notification received
2014 * from protocol/runtime uCode (initialization uCode's
2015 * Alive gets handled by iwl_init_alive_start()).
2016 */
2017 static void iwl_alive_start(struct iwl_priv *priv)
2018 {
2019 int ret = 0;
2020
2021 IWL_DEBUG_INFO("Runtime Alive received.\n");
2022
2023 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2024 /* We had an error bringing up the hardware, so take it
2025 * all the way back down so we can try again */
2026 IWL_DEBUG_INFO("Alive failed.\n");
2027 goto restart;
2028 }
2029
2030 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2031 * This is a paranoid check, because we would not have gotten the
2032 * "runtime" alive if code weren't properly loaded. */
2033 if (iwl_verify_ucode(priv)) {
2034 /* Runtime instruction load was bad;
2035 * take it all the way back down so we can try again */
2036 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
2037 goto restart;
2038 }
2039
2040 iwl_clear_stations_table(priv);
2041 ret = priv->cfg->ops->lib->alive_notify(priv);
2042 if (ret) {
2043 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
2044 ret);
2045 goto restart;
2046 }
2047
2048 /* After the ALIVE response, we can send host commands to 4965 uCode */
2049 set_bit(STATUS_ALIVE, &priv->status);
2050
2051 if (iwl_is_rfkill(priv))
2052 return;
2053
2054 ieee80211_wake_queues(priv->hw);
2055
2056 priv->active_rate = priv->rates_mask;
2057 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2058
2059 if (iwl_is_associated(priv)) {
2060 struct iwl_rxon_cmd *active_rxon =
2061 (struct iwl_rxon_cmd *)&priv->active_rxon;
2062
2063 memcpy(&priv->staging_rxon, &priv->active_rxon,
2064 sizeof(priv->staging_rxon));
2065 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2066 } else {
2067 /* Initialize our rx_config data */
2068 iwl4965_connection_init_rx_config(priv);
2069 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2070 }
2071
2072 /* Configure Bluetooth device coexistence support */
2073 iwl4965_send_bt_config(priv);
2074
2075 iwl_reset_run_time_calib(priv);
2076
2077 /* Configure the adapter for unassociated operation */
2078 iwl4965_commit_rxon(priv);
2079
2080 /* At this point, the NIC is initialized and operational */
2081 iwl_rf_kill_ct_config(priv);
2082
2083 iwl_leds_register(priv);
2084
2085 IWL_DEBUG_INFO("ALIVE processing complete.\n");
2086 set_bit(STATUS_READY, &priv->status);
2087 wake_up_interruptible(&priv->wait_command_queue);
2088
2089 if (priv->error_recovering)
2090 iwl4965_error_recovery(priv);
2091
2092 iwl_power_update_mode(priv, 1);
2093 ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2094
2095 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2096 iwl4965_set_mode(priv, priv->iw_mode);
2097
2098 return;
2099
2100 restart:
2101 queue_work(priv->workqueue, &priv->restart);
2102 }
2103
2104 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2105
2106 static void __iwl4965_down(struct iwl_priv *priv)
2107 {
2108 unsigned long flags;
2109 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2110
2111 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2112
2113 if (!exit_pending)
2114 set_bit(STATUS_EXIT_PENDING, &priv->status);
2115
2116 iwl_leds_unregister(priv);
2117
2118 iwl_clear_stations_table(priv);
2119
2120 /* Unblock any waiting calls */
2121 wake_up_interruptible_all(&priv->wait_command_queue);
2122
2123 /* Wipe out the EXIT_PENDING status bit if we are not actually
2124 * exiting the module */
2125 if (!exit_pending)
2126 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2127
2128 /* stop and reset the on-board processor */
2129 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2130
2131 /* tell the device to stop sending interrupts */
2132 spin_lock_irqsave(&priv->lock, flags);
2133 iwl4965_disable_interrupts(priv);
2134 spin_unlock_irqrestore(&priv->lock, flags);
2135 iwl_synchronize_irq(priv);
2136
2137 if (priv->mac80211_registered)
2138 ieee80211_stop_queues(priv->hw);
2139
2140 /* If we have not previously called iwl4965_init() then
2141 * clear all bits but the RF Kill and SUSPEND bits and return */
2142 if (!iwl_is_init(priv)) {
2143 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2144 STATUS_RF_KILL_HW |
2145 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2146 STATUS_RF_KILL_SW |
2147 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2148 STATUS_GEO_CONFIGURED |
2149 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2150 STATUS_IN_SUSPEND |
2151 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2152 STATUS_EXIT_PENDING;
2153 goto exit;
2154 }
2155
2156 /* ...otherwise clear out all the status bits but the RF Kill and
2157 * SUSPEND bits and continue taking the NIC down. */
2158 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2159 STATUS_RF_KILL_HW |
2160 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2161 STATUS_RF_KILL_SW |
2162 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2163 STATUS_GEO_CONFIGURED |
2164 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2165 STATUS_IN_SUSPEND |
2166 test_bit(STATUS_FW_ERROR, &priv->status) <<
2167 STATUS_FW_ERROR |
2168 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2169 STATUS_EXIT_PENDING;
2170
2171 spin_lock_irqsave(&priv->lock, flags);
2172 iwl_clear_bit(priv, CSR_GP_CNTRL,
2173 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2174 spin_unlock_irqrestore(&priv->lock, flags);
2175
2176 iwl_txq_ctx_stop(priv);
2177 iwl_rxq_stop(priv);
2178
2179 spin_lock_irqsave(&priv->lock, flags);
2180 if (!iwl_grab_nic_access(priv)) {
2181 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2182 APMG_CLK_VAL_DMA_CLK_RQT);
2183 iwl_release_nic_access(priv);
2184 }
2185 spin_unlock_irqrestore(&priv->lock, flags);
2186
2187 udelay(5);
2188
2189 /* FIXME: apm_ops.suspend(priv) */
2190 if (exit_pending || test_bit(STATUS_IN_SUSPEND, &priv->status))
2191 priv->cfg->ops->lib->apm_ops.stop(priv);
2192 else
2193 priv->cfg->ops->lib->apm_ops.reset(priv);
2194 priv->cfg->ops->lib->free_shared_mem(priv);
2195
2196 exit:
2197 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2198
2199 if (priv->ibss_beacon)
2200 dev_kfree_skb(priv->ibss_beacon);
2201 priv->ibss_beacon = NULL;
2202
2203 /* clear out any free frames */
2204 iwl_clear_free_frames(priv);
2205 }
2206
2207 static void iwl4965_down(struct iwl_priv *priv)
2208 {
2209 mutex_lock(&priv->mutex);
2210 __iwl4965_down(priv);
2211 mutex_unlock(&priv->mutex);
2212
2213 iwl_cancel_deferred_work(priv);
2214 }
2215
2216 #define MAX_HW_RESTARTS 5
2217
2218 static int __iwl4965_up(struct iwl_priv *priv)
2219 {
2220 int i;
2221 int ret;
2222
2223 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2224 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2225 return -EIO;
2226 }
2227
2228 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2229 IWL_ERROR("ucode not available for device bringup\n");
2230 return -EIO;
2231 }
2232
2233 /* If platform's RF_KILL switch is NOT set to KILL */
2234 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2235 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2236 else
2237 set_bit(STATUS_RF_KILL_HW, &priv->status);
2238
2239 if (iwl_is_rfkill(priv)) {
2240 iwl4965_enable_interrupts(priv);
2241 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2242 test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2243 return 0;
2244 }
2245
2246 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2247
2248 ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
2249 if (ret) {
2250 IWL_ERROR("Unable to allocate shared memory\n");
2251 return ret;
2252 }
2253
2254 ret = iwl_hw_nic_init(priv);
2255 if (ret) {
2256 IWL_ERROR("Unable to init nic\n");
2257 return ret;
2258 }
2259
2260 /* make sure rfkill handshake bits are cleared */
2261 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2262 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2263 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2264
2265 /* clear (again), then enable host interrupts */
2266 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2267 iwl4965_enable_interrupts(priv);
2268
2269 /* really make sure rfkill handshake bits are cleared */
2270 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2271 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2272
2273 /* Copy original ucode data image from disk into backup cache.
2274 * This will be used to initialize the on-board processor's
2275 * data SRAM for a clean start when the runtime program first loads. */
2276 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2277 priv->ucode_data.len);
2278
2279 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2280
2281 iwl_clear_stations_table(priv);
2282
2283 /* load bootstrap state machine,
2284 * load bootstrap program into processor's memory,
2285 * prepare to load the "initialize" uCode */
2286 ret = priv->cfg->ops->lib->load_ucode(priv);
2287
2288 if (ret) {
2289 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2290 continue;
2291 }
2292
2293 /* Clear out the uCode error bit if it is set */
2294 clear_bit(STATUS_FW_ERROR, &priv->status);
2295
2296 /* start card; "initialize" will load runtime ucode */
2297 iwl4965_nic_start(priv);
2298
2299 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2300
2301 return 0;
2302 }
2303
2304 set_bit(STATUS_EXIT_PENDING, &priv->status);
2305 __iwl4965_down(priv);
2306 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2307
2308 /* tried to restart and config the device for as long as our
2309 * patience could withstand */
2310 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2311 return -EIO;
2312 }
2313
2314
2315 /*****************************************************************************
2316 *
2317 * Workqueue callbacks
2318 *
2319 *****************************************************************************/
2320
2321 static void iwl_bg_init_alive_start(struct work_struct *data)
2322 {
2323 struct iwl_priv *priv =
2324 container_of(data, struct iwl_priv, init_alive_start.work);
2325
2326 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2327 return;
2328
2329 mutex_lock(&priv->mutex);
2330 priv->cfg->ops->lib->init_alive_start(priv);
2331 mutex_unlock(&priv->mutex);
2332 }
2333
2334 static void iwl_bg_alive_start(struct work_struct *data)
2335 {
2336 struct iwl_priv *priv =
2337 container_of(data, struct iwl_priv, alive_start.work);
2338
2339 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2340 return;
2341
2342 mutex_lock(&priv->mutex);
2343 iwl_alive_start(priv);
2344 mutex_unlock(&priv->mutex);
2345 }
2346
2347 static void iwl4965_bg_rf_kill(struct work_struct *work)
2348 {
2349 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2350
2351 wake_up_interruptible(&priv->wait_command_queue);
2352
2353 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2354 return;
2355
2356 mutex_lock(&priv->mutex);
2357
2358 if (!iwl_is_rfkill(priv)) {
2359 IWL_DEBUG(IWL_DL_RF_KILL,
2360 "HW and/or SW RF Kill no longer active, restarting "
2361 "device\n");
2362 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2363 queue_work(priv->workqueue, &priv->restart);
2364 } else {
2365 /* make sure mac80211 stop sending Tx frame */
2366 if (priv->mac80211_registered)
2367 ieee80211_stop_queues(priv->hw);
2368
2369 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2370 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2371 "disabled by SW switch\n");
2372 else
2373 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2374 "Kill switch must be turned off for "
2375 "wireless networking to work.\n");
2376 }
2377 mutex_unlock(&priv->mutex);
2378 iwl_rfkill_set_hw_state(priv);
2379 }
2380
2381 static void iwl4965_bg_set_monitor(struct work_struct *work)
2382 {
2383 struct iwl_priv *priv = container_of(work,
2384 struct iwl_priv, set_monitor);
2385 int ret;
2386
2387 IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
2388
2389 mutex_lock(&priv->mutex);
2390
2391 ret = iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR);
2392
2393 if (ret) {
2394 if (ret == -EAGAIN)
2395 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
2396 else
2397 IWL_ERROR("iwl4965_set_mode() failed ret = %d\n", ret);
2398 }
2399
2400 mutex_unlock(&priv->mutex);
2401 }
2402
2403 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2404 {
2405 struct iwl_priv *priv = container_of(work, struct iwl_priv,
2406 run_time_calib_work);
2407
2408 mutex_lock(&priv->mutex);
2409
2410 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2411 test_bit(STATUS_SCANNING, &priv->status)) {
2412 mutex_unlock(&priv->mutex);
2413 return;
2414 }
2415
2416 if (priv->start_calib) {
2417 iwl_chain_noise_calibration(priv, &priv->statistics);
2418
2419 iwl_sensitivity_calibration(priv, &priv->statistics);
2420 }
2421
2422 mutex_unlock(&priv->mutex);
2423 return;
2424 }
2425
2426 static void iwl4965_bg_up(struct work_struct *data)
2427 {
2428 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2429
2430 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2431 return;
2432
2433 mutex_lock(&priv->mutex);
2434 __iwl4965_up(priv);
2435 mutex_unlock(&priv->mutex);
2436 iwl_rfkill_set_hw_state(priv);
2437 }
2438
2439 static void iwl4965_bg_restart(struct work_struct *data)
2440 {
2441 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2442
2443 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2444 return;
2445
2446 iwl4965_down(priv);
2447 queue_work(priv->workqueue, &priv->up);
2448 }
2449
2450 static void iwl4965_bg_rx_replenish(struct work_struct *data)
2451 {
2452 struct iwl_priv *priv =
2453 container_of(data, struct iwl_priv, rx_replenish);
2454
2455 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2456 return;
2457
2458 mutex_lock(&priv->mutex);
2459 iwl_rx_replenish(priv);
2460 mutex_unlock(&priv->mutex);
2461 }
2462
2463 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2464
2465 static void iwl4965_post_associate(struct iwl_priv *priv)
2466 {
2467 struct ieee80211_conf *conf = NULL;
2468 int ret = 0;
2469 DECLARE_MAC_BUF(mac);
2470 unsigned long flags;
2471
2472 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2473 IWL_ERROR("%s Should not be called in AP mode\n", __func__);
2474 return;
2475 }
2476
2477 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
2478 priv->assoc_id,
2479 print_mac(mac, priv->active_rxon.bssid_addr));
2480
2481
2482 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2483 return;
2484
2485
2486 if (!priv->vif || !priv->is_open)
2487 return;
2488
2489 iwl_power_cancel_timeout(priv);
2490 iwl_scan_cancel_timeout(priv, 200);
2491
2492 conf = ieee80211_get_hw_conf(priv->hw);
2493
2494 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2495 iwl4965_commit_rxon(priv);
2496
2497 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2498 iwl4965_setup_rxon_timing(priv);
2499 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2500 sizeof(priv->rxon_timing), &priv->rxon_timing);
2501 if (ret)
2502 IWL_WARNING("REPLY_RXON_TIMING failed - "
2503 "Attempting to continue.\n");
2504
2505 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2506
2507 if (priv->current_ht_config.is_ht)
2508 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2509
2510 iwl_set_rxon_chain(priv);
2511 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2512
2513 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2514 priv->assoc_id, priv->beacon_int);
2515
2516 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2517 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2518 else
2519 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2520
2521 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2522 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2523 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2524 else
2525 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2526
2527 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2528 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2529
2530 }
2531
2532 iwl4965_commit_rxon(priv);
2533
2534 switch (priv->iw_mode) {
2535 case IEEE80211_IF_TYPE_STA:
2536 break;
2537
2538 case IEEE80211_IF_TYPE_IBSS:
2539
2540 /* assume default assoc id */
2541 priv->assoc_id = 1;
2542
2543 iwl_rxon_add_station(priv, priv->bssid, 0);
2544 iwl4965_send_beacon_cmd(priv);
2545
2546 break;
2547
2548 default:
2549 IWL_ERROR("%s Should not be called in %d mode\n",
2550 __func__, priv->iw_mode);
2551 break;
2552 }
2553
2554 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2555 priv->assoc_station_added = 1;
2556
2557 spin_lock_irqsave(&priv->lock, flags);
2558 iwl_activate_qos(priv, 0);
2559 spin_unlock_irqrestore(&priv->lock, flags);
2560
2561 iwl_power_enable_management(priv);
2562
2563 /* Enable Rx differential gain and sensitivity calibrations */
2564 iwl_chain_noise_reset(priv);
2565 priv->start_calib = 1;
2566
2567 /* we have just associated, don't start scan too early */
2568 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
2569 }
2570
2571 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
2572
2573 static void iwl_bg_scan_completed(struct work_struct *work)
2574 {
2575 struct iwl_priv *priv =
2576 container_of(work, struct iwl_priv, scan_completed);
2577
2578 IWL_DEBUG_SCAN("SCAN complete scan\n");
2579
2580 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2581 return;
2582
2583 if (test_bit(STATUS_CONF_PENDING, &priv->status))
2584 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
2585
2586 ieee80211_scan_completed(priv->hw);
2587
2588 /* Since setting the TXPOWER may have been deferred while
2589 * performing the scan, fire one off */
2590 mutex_lock(&priv->mutex);
2591 iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
2592 mutex_unlock(&priv->mutex);
2593 }
2594
2595 /*****************************************************************************
2596 *
2597 * mac80211 entry point functions
2598 *
2599 *****************************************************************************/
2600
2601 #define UCODE_READY_TIMEOUT (4 * HZ)
2602
2603 static int iwl4965_mac_start(struct ieee80211_hw *hw)
2604 {
2605 struct iwl_priv *priv = hw->priv;
2606 int ret;
2607 u16 pci_cmd;
2608
2609 IWL_DEBUG_MAC80211("enter\n");
2610
2611 if (pci_enable_device(priv->pci_dev)) {
2612 IWL_ERROR("Fail to pci_enable_device\n");
2613 return -ENODEV;
2614 }
2615 pci_restore_state(priv->pci_dev);
2616 pci_enable_msi(priv->pci_dev);
2617
2618 /* enable interrupts if needed: hw bug w/a */
2619 pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
2620 if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
2621 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
2622 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
2623 }
2624
2625 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
2626 DRV_NAME, priv);
2627 if (ret) {
2628 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2629 goto out_disable_msi;
2630 }
2631
2632 /* we should be verifying the device is ready to be opened */
2633 mutex_lock(&priv->mutex);
2634
2635 memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2636 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2637 * ucode filename and max sizes are card-specific. */
2638
2639 if (!priv->ucode_code.len) {
2640 ret = iwl4965_read_ucode(priv);
2641 if (ret) {
2642 IWL_ERROR("Could not read microcode: %d\n", ret);
2643 mutex_unlock(&priv->mutex);
2644 goto out_release_irq;
2645 }
2646 }
2647
2648 ret = __iwl4965_up(priv);
2649
2650 mutex_unlock(&priv->mutex);
2651
2652 iwl_rfkill_set_hw_state(priv);
2653
2654 if (ret)
2655 goto out_release_irq;
2656
2657 if (iwl_is_rfkill(priv))
2658 goto out;
2659
2660 IWL_DEBUG_INFO("Start UP work done.\n");
2661
2662 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2663 return 0;
2664
2665 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2666 * mac80211 will not be run successfully. */
2667 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2668 test_bit(STATUS_READY, &priv->status),
2669 UCODE_READY_TIMEOUT);
2670 if (!ret) {
2671 if (!test_bit(STATUS_READY, &priv->status)) {
2672 IWL_ERROR("START_ALIVE timeout after %dms.\n",
2673 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2674 ret = -ETIMEDOUT;
2675 goto out_release_irq;
2676 }
2677 }
2678
2679 out:
2680 priv->is_open = 1;
2681 IWL_DEBUG_MAC80211("leave\n");
2682 return 0;
2683
2684 out_release_irq:
2685 free_irq(priv->pci_dev->irq, priv);
2686 out_disable_msi:
2687 pci_disable_msi(priv->pci_dev);
2688 pci_disable_device(priv->pci_dev);
2689 priv->is_open = 0;
2690 IWL_DEBUG_MAC80211("leave - failed\n");
2691 return ret;
2692 }
2693
2694 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
2695 {
2696 struct iwl_priv *priv = hw->priv;
2697
2698 IWL_DEBUG_MAC80211("enter\n");
2699
2700 if (!priv->is_open) {
2701 IWL_DEBUG_MAC80211("leave - skip\n");
2702 return;
2703 }
2704
2705 priv->is_open = 0;
2706
2707 if (iwl_is_ready_rf(priv)) {
2708 /* stop mac, cancel any scan request and clear
2709 * RXON_FILTER_ASSOC_MSK BIT
2710 */
2711 mutex_lock(&priv->mutex);
2712 iwl_scan_cancel_timeout(priv, 100);
2713 mutex_unlock(&priv->mutex);
2714 }
2715
2716 iwl4965_down(priv);
2717
2718 flush_workqueue(priv->workqueue);
2719 free_irq(priv->pci_dev->irq, priv);
2720 pci_disable_msi(priv->pci_dev);
2721 pci_save_state(priv->pci_dev);
2722 pci_disable_device(priv->pci_dev);
2723
2724 IWL_DEBUG_MAC80211("leave\n");
2725 }
2726
2727 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2728 {
2729 struct iwl_priv *priv = hw->priv;
2730
2731 IWL_DEBUG_MACDUMP("enter\n");
2732
2733 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2734 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2735
2736 if (iwl_tx_skb(priv, skb))
2737 dev_kfree_skb_any(skb);
2738
2739 IWL_DEBUG_MACDUMP("leave\n");
2740 return 0;
2741 }
2742
2743 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
2744 struct ieee80211_if_init_conf *conf)
2745 {
2746 struct iwl_priv *priv = hw->priv;
2747 unsigned long flags;
2748 DECLARE_MAC_BUF(mac);
2749
2750 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2751
2752 if (priv->vif) {
2753 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2754 return -EOPNOTSUPP;
2755 }
2756
2757 spin_lock_irqsave(&priv->lock, flags);
2758 priv->vif = conf->vif;
2759
2760 spin_unlock_irqrestore(&priv->lock, flags);
2761
2762 mutex_lock(&priv->mutex);
2763
2764 if (conf->mac_addr) {
2765 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
2766 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2767 }
2768
2769 if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
2770 /* we are not ready, will run again when ready */
2771 set_bit(STATUS_MODE_PENDING, &priv->status);
2772
2773 mutex_unlock(&priv->mutex);
2774
2775 IWL_DEBUG_MAC80211("leave\n");
2776 return 0;
2777 }
2778
2779 /**
2780 * iwl4965_mac_config - mac80211 config callback
2781 *
2782 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2783 * be set inappropriately and the driver currently sets the hardware up to
2784 * use it whenever needed.
2785 */
2786 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
2787 {
2788 struct iwl_priv *priv = hw->priv;
2789 const struct iwl_channel_info *ch_info;
2790 unsigned long flags;
2791 int ret = 0;
2792 u16 channel;
2793
2794 mutex_lock(&priv->mutex);
2795 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2796
2797 if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2798 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2799 goto out;
2800 }
2801
2802 if (!conf->radio_enabled)
2803 iwl_radio_kill_sw_disable_radio(priv);
2804
2805 if (!iwl_is_ready(priv)) {
2806 IWL_DEBUG_MAC80211("leave - not ready\n");
2807 ret = -EIO;
2808 goto out;
2809 }
2810
2811 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2812 test_bit(STATUS_SCANNING, &priv->status))) {
2813 IWL_DEBUG_MAC80211("leave - scanning\n");
2814 set_bit(STATUS_CONF_PENDING, &priv->status);
2815 mutex_unlock(&priv->mutex);
2816 return 0;
2817 }
2818
2819 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2820 ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2821 if (!is_channel_valid(ch_info)) {
2822 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2823 ret = -EINVAL;
2824 goto out;
2825 }
2826
2827 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
2828 !is_channel_ibss(ch_info)) {
2829 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2830 conf->channel->hw_value, conf->channel->band);
2831 ret = -EINVAL;
2832 goto out;
2833 }
2834
2835 spin_lock_irqsave(&priv->lock, flags);
2836
2837
2838 /* if we are switching from ht to 2.4 clear flags
2839 * from any ht related info since 2.4 does not
2840 * support ht */
2841 if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2842 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2843 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2844 #endif
2845 )
2846 priv->staging_rxon.flags = 0;
2847
2848 iwl_set_rxon_channel(priv, conf->channel);
2849
2850 iwl_set_flags_for_band(priv, conf->channel->band);
2851
2852 /* The list of supported rates and rate mask can be different
2853 * for each band; since the band may have changed, reset
2854 * the rate mask to what mac80211 lists */
2855 iwl4965_set_rate(priv);
2856
2857 spin_unlock_irqrestore(&priv->lock, flags);
2858
2859 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2860 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2861 iwl4965_hw_channel_switch(priv, conf->channel);
2862 goto out;
2863 }
2864 #endif
2865
2866 if (!conf->radio_enabled) {
2867 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2868 goto out;
2869 }
2870
2871 if (iwl_is_rfkill(priv)) {
2872 IWL_DEBUG_MAC80211("leave - RF kill\n");
2873 ret = -EIO;
2874 goto out;
2875 }
2876
2877 IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2878 priv->tx_power_user_lmt, conf->power_level);
2879
2880 iwl_set_tx_power(priv, conf->power_level, false);
2881
2882 iwl4965_set_rate(priv);
2883
2884 if (memcmp(&priv->active_rxon,
2885 &priv->staging_rxon, sizeof(priv->staging_rxon)))
2886 iwl4965_commit_rxon(priv);
2887 else
2888 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2889
2890 IWL_DEBUG_MAC80211("leave\n");
2891
2892 out:
2893 clear_bit(STATUS_CONF_PENDING, &priv->status);
2894 mutex_unlock(&priv->mutex);
2895 return ret;
2896 }
2897
2898 static void iwl4965_config_ap(struct iwl_priv *priv)
2899 {
2900 int ret = 0;
2901 unsigned long flags;
2902
2903 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2904 return;
2905
2906 /* The following should be done only at AP bring up */
2907 if (!(iwl_is_associated(priv))) {
2908
2909 /* RXON - unassoc (to set timing command) */
2910 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2911 iwl4965_commit_rxon(priv);
2912
2913 /* RXON Timing */
2914 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2915 iwl4965_setup_rxon_timing(priv);
2916 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2917 sizeof(priv->rxon_timing), &priv->rxon_timing);
2918 if (ret)
2919 IWL_WARNING("REPLY_RXON_TIMING failed - "
2920 "Attempting to continue.\n");
2921
2922 iwl_set_rxon_chain(priv);
2923
2924 /* FIXME: what should be the assoc_id for AP? */
2925 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2926 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2927 priv->staging_rxon.flags |=
2928 RXON_FLG_SHORT_PREAMBLE_MSK;
2929 else
2930 priv->staging_rxon.flags &=
2931 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2932
2933 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2934 if (priv->assoc_capability &
2935 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2936 priv->staging_rxon.flags |=
2937 RXON_FLG_SHORT_SLOT_MSK;
2938 else
2939 priv->staging_rxon.flags &=
2940 ~RXON_FLG_SHORT_SLOT_MSK;
2941
2942 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2943 priv->staging_rxon.flags &=
2944 ~RXON_FLG_SHORT_SLOT_MSK;
2945 }
2946 /* restore RXON assoc */
2947 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2948 iwl4965_commit_rxon(priv);
2949 spin_lock_irqsave(&priv->lock, flags);
2950 iwl_activate_qos(priv, 1);
2951 spin_unlock_irqrestore(&priv->lock, flags);
2952 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2953 }
2954 iwl4965_send_beacon_cmd(priv);
2955
2956 /* FIXME - we need to add code here to detect a totally new
2957 * configuration, reset the AP, unassoc, rxon timing, assoc,
2958 * clear sta table, add BCAST sta... */
2959 }
2960
2961 /* temporary */
2962 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb);
2963
2964 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
2965 struct ieee80211_vif *vif,
2966 struct ieee80211_if_conf *conf)
2967 {
2968 struct iwl_priv *priv = hw->priv;
2969 DECLARE_MAC_BUF(mac);
2970 unsigned long flags;
2971 int rc;
2972
2973 if (conf == NULL)
2974 return -EIO;
2975
2976 if (priv->vif != vif) {
2977 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2978 return 0;
2979 }
2980
2981 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
2982 conf->changed & IEEE80211_IFCC_BEACON) {
2983 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2984 if (!beacon)
2985 return -ENOMEM;
2986 rc = iwl4965_mac_beacon_update(hw, beacon);
2987 if (rc)
2988 return rc;
2989 }
2990
2991 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
2992 (!conf->ssid_len)) {
2993 IWL_DEBUG_MAC80211
2994 ("Leaving in AP mode because HostAPD is not ready.\n");
2995 return 0;
2996 }
2997
2998 if (!iwl_is_alive(priv))
2999 return -EAGAIN;
3000
3001 mutex_lock(&priv->mutex);
3002
3003 if (conf->bssid)
3004 IWL_DEBUG_MAC80211("bssid: %s\n",
3005 print_mac(mac, conf->bssid));
3006
3007 /*
3008 * very dubious code was here; the probe filtering flag is never set:
3009 *
3010 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
3011 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
3012 */
3013
3014 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
3015 if (!conf->bssid) {
3016 conf->bssid = priv->mac_addr;
3017 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
3018 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
3019 print_mac(mac, conf->bssid));
3020 }
3021 if (priv->ibss_beacon)
3022 dev_kfree_skb(priv->ibss_beacon);
3023
3024 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
3025 }
3026
3027 if (iwl_is_rfkill(priv))
3028 goto done;
3029
3030 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
3031 !is_multicast_ether_addr(conf->bssid)) {
3032 /* If there is currently a HW scan going on in the background
3033 * then we need to cancel it else the RXON below will fail. */
3034 if (iwl_scan_cancel_timeout(priv, 100)) {
3035 IWL_WARNING("Aborted scan still in progress "
3036 "after 100ms\n");
3037 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
3038 mutex_unlock(&priv->mutex);
3039 return -EAGAIN;
3040 }
3041 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
3042
3043 /* TODO: Audit driver for usage of these members and see
3044 * if mac80211 deprecates them (priv->bssid looks like it
3045 * shouldn't be there, but I haven't scanned the IBSS code
3046 * to verify) - jpk */
3047 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
3048
3049 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3050 iwl4965_config_ap(priv);
3051 else {
3052 rc = iwl4965_commit_rxon(priv);
3053 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
3054 iwl_rxon_add_station(
3055 priv, priv->active_rxon.bssid_addr, 1);
3056 }
3057
3058 } else {
3059 iwl_scan_cancel_timeout(priv, 100);
3060 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3061 iwl4965_commit_rxon(priv);
3062 }
3063
3064 done:
3065 spin_lock_irqsave(&priv->lock, flags);
3066 if (!conf->ssid_len)
3067 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3068 else
3069 memcpy(priv->essid, conf->ssid, conf->ssid_len);
3070
3071 priv->essid_len = conf->ssid_len;
3072 spin_unlock_irqrestore(&priv->lock, flags);
3073
3074 IWL_DEBUG_MAC80211("leave\n");
3075 mutex_unlock(&priv->mutex);
3076
3077 return 0;
3078 }
3079
3080 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
3081 unsigned int changed_flags,
3082 unsigned int *total_flags,
3083 int mc_count, struct dev_addr_list *mc_list)
3084 {
3085 struct iwl_priv *priv = hw->priv;
3086
3087 if (changed_flags & (*total_flags) & FIF_OTHER_BSS) {
3088 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
3089 IEEE80211_IF_TYPE_MNTR,
3090 changed_flags, *total_flags);
3091 /* queue work 'cuz mac80211 is holding a lock which
3092 * prevents us from issuing (synchronous) f/w cmds */
3093 queue_work(priv->workqueue, &priv->set_monitor);
3094 }
3095 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI |
3096 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3097 }
3098
3099 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
3100 struct ieee80211_if_init_conf *conf)
3101 {
3102 struct iwl_priv *priv = hw->priv;
3103
3104 IWL_DEBUG_MAC80211("enter\n");
3105
3106 mutex_lock(&priv->mutex);
3107
3108 if (iwl_is_ready_rf(priv)) {
3109 iwl_scan_cancel_timeout(priv, 100);
3110 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3111 iwl4965_commit_rxon(priv);
3112 }
3113 if (priv->vif == conf->vif) {
3114 priv->vif = NULL;
3115 memset(priv->bssid, 0, ETH_ALEN);
3116 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3117 priv->essid_len = 0;
3118 }
3119 mutex_unlock(&priv->mutex);
3120
3121 IWL_DEBUG_MAC80211("leave\n");
3122
3123 }
3124
3125 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3126 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
3127 struct ieee80211_vif *vif,
3128 struct ieee80211_bss_conf *bss_conf,
3129 u32 changes)
3130 {
3131 struct iwl_priv *priv = hw->priv;
3132
3133 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
3134
3135 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3136 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
3137 bss_conf->use_short_preamble);
3138 if (bss_conf->use_short_preamble)
3139 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3140 else
3141 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3142 }
3143
3144 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3145 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3146 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3147 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3148 else
3149 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3150 }
3151
3152 if (changes & BSS_CHANGED_HT) {
3153 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
3154 iwl4965_ht_conf(priv, bss_conf);
3155 iwl_set_rxon_chain(priv);
3156 }
3157
3158 if (changes & BSS_CHANGED_ASSOC) {
3159 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3160 /* This should never happen as this function should
3161 * never be called from interrupt context. */
3162 if (WARN_ON_ONCE(in_interrupt()))
3163 return;
3164 if (bss_conf->assoc) {
3165 priv->assoc_id = bss_conf->aid;
3166 priv->beacon_int = bss_conf->beacon_int;
3167 priv->power_data.dtim_period = bss_conf->dtim_period;
3168 priv->timestamp = bss_conf->timestamp;
3169 priv->assoc_capability = bss_conf->assoc_capability;
3170 priv->next_scan_jiffies = jiffies +
3171 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3172 mutex_lock(&priv->mutex);
3173 iwl4965_post_associate(priv);
3174 mutex_unlock(&priv->mutex);
3175 } else {
3176 priv->assoc_id = 0;
3177 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3178 }
3179 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3180 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3181 iwl_send_rxon_assoc(priv);
3182 }
3183
3184 }
3185
3186 static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t ssid_len)
3187 {
3188 int ret;
3189 unsigned long flags;
3190 struct iwl_priv *priv = hw->priv;
3191
3192 IWL_DEBUG_MAC80211("enter\n");
3193
3194 mutex_lock(&priv->mutex);
3195 spin_lock_irqsave(&priv->lock, flags);
3196
3197 if (!iwl_is_ready_rf(priv)) {
3198 ret = -EIO;
3199 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3200 goto out_unlock;
3201 }
3202
3203 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
3204 ret = -EIO;
3205 IWL_ERROR("ERROR: APs don't scan\n");
3206 goto out_unlock;
3207 }
3208
3209 /* we don't schedule scan within next_scan_jiffies period */
3210 if (priv->next_scan_jiffies &&
3211 time_after(priv->next_scan_jiffies, jiffies)) {
3212 IWL_DEBUG_SCAN("scan rejected: within next scan period\n");
3213 ret = -EAGAIN;
3214 goto out_unlock;
3215 }
3216 /* if we just finished scan ask for delay */
3217 if (iwl_is_associated(priv) && priv->last_scan_jiffies &&
3218 time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN, jiffies)) {
3219 IWL_DEBUG_SCAN("scan rejected: within previous scan period\n");
3220 ret = -EAGAIN;
3221 goto out_unlock;
3222 }
3223 if (ssid_len) {
3224 priv->one_direct_scan = 1;
3225 priv->direct_ssid_len = min_t(u8, ssid_len, IW_ESSID_MAX_SIZE);
3226 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3227 } else {
3228 priv->one_direct_scan = 0;
3229 }
3230
3231 ret = iwl_scan_initiate(priv);
3232
3233 IWL_DEBUG_MAC80211("leave\n");
3234
3235 out_unlock:
3236 spin_unlock_irqrestore(&priv->lock, flags);
3237 mutex_unlock(&priv->mutex);
3238
3239 return ret;
3240 }
3241
3242 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
3243 struct ieee80211_key_conf *keyconf, const u8 *addr,
3244 u32 iv32, u16 *phase1key)
3245 {
3246 struct iwl_priv *priv = hw->priv;
3247 u8 sta_id = IWL_INVALID_STATION;
3248 unsigned long flags;
3249 __le16 key_flags = 0;
3250 int i;
3251 DECLARE_MAC_BUF(mac);
3252
3253 IWL_DEBUG_MAC80211("enter\n");
3254
3255 sta_id = iwl_find_station(priv, addr);
3256 if (sta_id == IWL_INVALID_STATION) {
3257 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3258 print_mac(mac, addr));
3259 return;
3260 }
3261
3262 iwl_scan_cancel_timeout(priv, 100);
3263
3264 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
3265 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
3266 key_flags &= ~STA_KEY_FLG_INVALID;
3267
3268 if (sta_id == priv->hw_params.bcast_sta_id)
3269 key_flags |= STA_KEY_MULTICAST_MSK;
3270
3271 spin_lock_irqsave(&priv->sta_lock, flags);
3272
3273 priv->stations[sta_id].sta.key.key_flags = key_flags;
3274 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
3275
3276 for (i = 0; i < 5; i++)
3277 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
3278 cpu_to_le16(phase1key[i]);
3279
3280 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
3281 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3282
3283 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3284
3285 spin_unlock_irqrestore(&priv->sta_lock, flags);
3286
3287 IWL_DEBUG_MAC80211("leave\n");
3288 }
3289
3290 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3291 const u8 *local_addr, const u8 *addr,
3292 struct ieee80211_key_conf *key)
3293 {
3294 struct iwl_priv *priv = hw->priv;
3295 DECLARE_MAC_BUF(mac);
3296 int ret = 0;
3297 u8 sta_id = IWL_INVALID_STATION;
3298 u8 is_default_wep_key = 0;
3299
3300 IWL_DEBUG_MAC80211("enter\n");
3301
3302 if (priv->hw_params.sw_crypto) {
3303 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3304 return -EOPNOTSUPP;
3305 }
3306
3307 if (is_zero_ether_addr(addr))
3308 /* only support pairwise keys */
3309 return -EOPNOTSUPP;
3310
3311 sta_id = iwl_find_station(priv, addr);
3312 if (sta_id == IWL_INVALID_STATION) {
3313 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3314 print_mac(mac, addr));
3315 return -EINVAL;
3316
3317 }
3318
3319 mutex_lock(&priv->mutex);
3320 iwl_scan_cancel_timeout(priv, 100);
3321 mutex_unlock(&priv->mutex);
3322
3323 /* If we are getting WEP group key and we didn't receive any key mapping
3324 * so far, we are in legacy wep mode (group key only), otherwise we are
3325 * in 1X mode.
3326 * In legacy wep mode, we use another host command to the uCode */
3327 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3328 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3329 if (cmd == SET_KEY)
3330 is_default_wep_key = !priv->key_mapping_key;
3331 else
3332 is_default_wep_key =
3333 (key->hw_key_idx == HW_KEY_DEFAULT);
3334 }
3335
3336 switch (cmd) {
3337 case SET_KEY:
3338 if (is_default_wep_key)
3339 ret = iwl_set_default_wep_key(priv, key);
3340 else
3341 ret = iwl_set_dynamic_key(priv, key, sta_id);
3342
3343 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3344 break;
3345 case DISABLE_KEY:
3346 if (is_default_wep_key)
3347 ret = iwl_remove_default_wep_key(priv, key);
3348 else
3349 ret = iwl_remove_dynamic_key(priv, key, sta_id);
3350
3351 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3352 break;
3353 default:
3354 ret = -EINVAL;
3355 }
3356
3357 IWL_DEBUG_MAC80211("leave\n");
3358
3359 return ret;
3360 }
3361
3362 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3363 const struct ieee80211_tx_queue_params *params)
3364 {
3365 struct iwl_priv *priv = hw->priv;
3366 unsigned long flags;
3367 int q;
3368
3369 IWL_DEBUG_MAC80211("enter\n");
3370
3371 if (!iwl_is_ready_rf(priv)) {
3372 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3373 return -EIO;
3374 }
3375
3376 if (queue >= AC_NUM) {
3377 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3378 return 0;
3379 }
3380
3381 if (!priv->qos_data.qos_enable) {
3382 priv->qos_data.qos_active = 0;
3383 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3384 return 0;
3385 }
3386 q = AC_NUM - 1 - queue;
3387
3388 spin_lock_irqsave(&priv->lock, flags);
3389
3390 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3391 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3392 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3393 priv->qos_data.def_qos_parm.ac[q].edca_txop =
3394 cpu_to_le16((params->txop * 32));
3395
3396 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3397 priv->qos_data.qos_active = 1;
3398
3399 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3400 iwl_activate_qos(priv, 1);
3401 else if (priv->assoc_id && iwl_is_associated(priv))
3402 iwl_activate_qos(priv, 0);
3403
3404 spin_unlock_irqrestore(&priv->lock, flags);
3405
3406 IWL_DEBUG_MAC80211("leave\n");
3407 return 0;
3408 }
3409
3410 static int iwl4965_mac_ampdu_action(struct ieee80211_hw *hw,
3411 enum ieee80211_ampdu_mlme_action action,
3412 const u8 *addr, u16 tid, u16 *ssn)
3413 {
3414 struct iwl_priv *priv = hw->priv;
3415 DECLARE_MAC_BUF(mac);
3416
3417 IWL_DEBUG_HT("A-MPDU action on addr %s tid %d\n",
3418 print_mac(mac, addr), tid);
3419
3420 if (!(priv->cfg->sku & IWL_SKU_N))
3421 return -EACCES;
3422
3423 switch (action) {
3424 case IEEE80211_AMPDU_RX_START:
3425 IWL_DEBUG_HT("start Rx\n");
3426 return iwl_rx_agg_start(priv, addr, tid, *ssn);
3427 case IEEE80211_AMPDU_RX_STOP:
3428 IWL_DEBUG_HT("stop Rx\n");
3429 return iwl_rx_agg_stop(priv, addr, tid);
3430 case IEEE80211_AMPDU_TX_START:
3431 IWL_DEBUG_HT("start Tx\n");
3432 return iwl_tx_agg_start(priv, addr, tid, ssn);
3433 case IEEE80211_AMPDU_TX_STOP:
3434 IWL_DEBUG_HT("stop Tx\n");
3435 return iwl_tx_agg_stop(priv, addr, tid);
3436 default:
3437 IWL_DEBUG_HT("unknown\n");
3438 return -EINVAL;
3439 break;
3440 }
3441 return 0;
3442 }
3443 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
3444 struct ieee80211_tx_queue_stats *stats)
3445 {
3446 struct iwl_priv *priv = hw->priv;
3447 int i, avail;
3448 struct iwl_tx_queue *txq;
3449 struct iwl_queue *q;
3450 unsigned long flags;
3451
3452 IWL_DEBUG_MAC80211("enter\n");
3453
3454 if (!iwl_is_ready_rf(priv)) {
3455 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3456 return -EIO;
3457 }
3458
3459 spin_lock_irqsave(&priv->lock, flags);
3460
3461 for (i = 0; i < AC_NUM; i++) {
3462 txq = &priv->txq[i];
3463 q = &txq->q;
3464 avail = iwl_queue_space(q);
3465
3466 stats[i].len = q->n_window - avail;
3467 stats[i].limit = q->n_window - q->high_mark;
3468 stats[i].count = q->n_window;
3469
3470 }
3471 spin_unlock_irqrestore(&priv->lock, flags);
3472
3473 IWL_DEBUG_MAC80211("leave\n");
3474
3475 return 0;
3476 }
3477
3478 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
3479 struct ieee80211_low_level_stats *stats)
3480 {
3481 struct iwl_priv *priv = hw->priv;
3482
3483 priv = hw->priv;
3484 IWL_DEBUG_MAC80211("enter\n");
3485 IWL_DEBUG_MAC80211("leave\n");
3486
3487 return 0;
3488 }
3489
3490 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
3491 {
3492 struct iwl_priv *priv = hw->priv;
3493 unsigned long flags;
3494
3495 mutex_lock(&priv->mutex);
3496 IWL_DEBUG_MAC80211("enter\n");
3497
3498 spin_lock_irqsave(&priv->lock, flags);
3499 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3500 spin_unlock_irqrestore(&priv->lock, flags);
3501
3502 iwl_reset_qos(priv);
3503
3504 spin_lock_irqsave(&priv->lock, flags);
3505 priv->assoc_id = 0;
3506 priv->assoc_capability = 0;
3507 priv->assoc_station_added = 0;
3508
3509 /* new association get rid of ibss beacon skb */
3510 if (priv->ibss_beacon)
3511 dev_kfree_skb(priv->ibss_beacon);
3512
3513 priv->ibss_beacon = NULL;
3514
3515 priv->beacon_int = priv->hw->conf.beacon_int;
3516 priv->timestamp = 0;
3517 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
3518 priv->beacon_int = 0;
3519
3520 spin_unlock_irqrestore(&priv->lock, flags);
3521
3522 if (!iwl_is_ready_rf(priv)) {
3523 IWL_DEBUG_MAC80211("leave - not ready\n");
3524 mutex_unlock(&priv->mutex);
3525 return;
3526 }
3527
3528 /* we are restarting association process
3529 * clear RXON_FILTER_ASSOC_MSK bit
3530 */
3531 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3532 iwl_scan_cancel_timeout(priv, 100);
3533 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3534 iwl4965_commit_rxon(priv);
3535 }
3536
3537 iwl_power_update_mode(priv, 0);
3538
3539 /* Per mac80211.h: This is only used in IBSS mode... */
3540 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3541
3542 /* switch to CAM during association period.
3543 * the ucode will block any association/authentication
3544 * frome during assiciation period if it can not hear
3545 * the AP because of PM. the timer enable PM back is
3546 * association do not complete
3547 */
3548 if (priv->hw->conf.channel->flags & (IEEE80211_CHAN_PASSIVE_SCAN |
3549 IEEE80211_CHAN_RADAR))
3550 iwl_power_disable_management(priv, 3000);
3551
3552 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3553 mutex_unlock(&priv->mutex);
3554 return;
3555 }
3556
3557 iwl4965_set_rate(priv);
3558
3559 mutex_unlock(&priv->mutex);
3560
3561 IWL_DEBUG_MAC80211("leave\n");
3562 }
3563
3564 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3565 {
3566 struct iwl_priv *priv = hw->priv;
3567 unsigned long flags;
3568 __le64 timestamp;
3569
3570 mutex_lock(&priv->mutex);
3571 IWL_DEBUG_MAC80211("enter\n");
3572
3573 if (!iwl_is_ready_rf(priv)) {
3574 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3575 mutex_unlock(&priv->mutex);
3576 return -EIO;
3577 }
3578
3579 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3580 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3581 mutex_unlock(&priv->mutex);
3582 return -EIO;
3583 }
3584
3585 spin_lock_irqsave(&priv->lock, flags);
3586
3587 if (priv->ibss_beacon)
3588 dev_kfree_skb(priv->ibss_beacon);
3589
3590 priv->ibss_beacon = skb;
3591
3592 priv->assoc_id = 0;
3593 timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3594 priv->timestamp = le64_to_cpu(timestamp);
3595
3596 IWL_DEBUG_MAC80211("leave\n");
3597 spin_unlock_irqrestore(&priv->lock, flags);
3598
3599 iwl_reset_qos(priv);
3600
3601 iwl4965_post_associate(priv);
3602
3603 mutex_unlock(&priv->mutex);
3604
3605 return 0;
3606 }
3607
3608 /*****************************************************************************
3609 *
3610 * sysfs attributes
3611 *
3612 *****************************************************************************/
3613
3614 #ifdef CONFIG_IWLWIFI_DEBUG
3615
3616 /*
3617 * The following adds a new attribute to the sysfs representation
3618 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3619 * used for controlling the debug level.
3620 *
3621 * See the level definitions in iwl for details.
3622 */
3623
3624 static ssize_t show_debug_level(struct device *d,
3625 struct device_attribute *attr, char *buf)
3626 {
3627 struct iwl_priv *priv = d->driver_data;
3628
3629 return sprintf(buf, "0x%08X\n", priv->debug_level);
3630 }
3631 static ssize_t store_debug_level(struct device *d,
3632 struct device_attribute *attr,
3633 const char *buf, size_t count)
3634 {
3635 struct iwl_priv *priv = d->driver_data;
3636 unsigned long val;
3637 int ret;
3638
3639 ret = strict_strtoul(buf, 0, &val);
3640 if (ret)
3641 printk(KERN_INFO DRV_NAME
3642 ": %s is not in hex or decimal form.\n", buf);
3643 else
3644 priv->debug_level = val;
3645
3646 return strnlen(buf, count);
3647 }
3648
3649 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3650 show_debug_level, store_debug_level);
3651
3652
3653 #endif /* CONFIG_IWLWIFI_DEBUG */
3654
3655
3656 static ssize_t show_version(struct device *d,
3657 struct device_attribute *attr, char *buf)
3658 {
3659 struct iwl_priv *priv = d->driver_data;
3660 struct iwl_alive_resp *palive = &priv->card_alive;
3661 ssize_t pos = 0;
3662 u16 eeprom_ver;
3663
3664 if (palive->is_valid)
3665 pos += sprintf(buf + pos,
3666 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3667 "fw type: 0x%01X 0x%01X\n",
3668 palive->ucode_major, palive->ucode_minor,
3669 palive->sw_rev[0], palive->sw_rev[1],
3670 palive->ver_type, palive->ver_subtype);
3671 else
3672 pos += sprintf(buf + pos, "fw not loaded\n");
3673
3674 if (priv->eeprom) {
3675 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3676 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3677 eeprom_ver);
3678 } else {
3679 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3680 }
3681
3682 return pos;
3683 }
3684
3685 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3686
3687 static ssize_t show_temperature(struct device *d,
3688 struct device_attribute *attr, char *buf)
3689 {
3690 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3691
3692 if (!iwl_is_alive(priv))
3693 return -EAGAIN;
3694
3695 return sprintf(buf, "%d\n", priv->temperature);
3696 }
3697
3698 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3699
3700 static ssize_t show_tx_power(struct device *d,
3701 struct device_attribute *attr, char *buf)
3702 {
3703 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3704 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3705 }
3706
3707 static ssize_t store_tx_power(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 unsigned long val;
3713 int ret;
3714
3715 ret = strict_strtoul(buf, 10, &val);
3716 if (ret)
3717 printk(KERN_INFO DRV_NAME
3718 ": %s is not in decimal form.\n", buf);
3719 else
3720 iwl_set_tx_power(priv, val, false);
3721
3722 return count;
3723 }
3724
3725 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3726
3727 static ssize_t show_flags(struct device *d,
3728 struct device_attribute *attr, char *buf)
3729 {
3730 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3731
3732 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3733 }
3734
3735 static ssize_t store_flags(struct device *d,
3736 struct device_attribute *attr,
3737 const char *buf, size_t count)
3738 {
3739 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3740 unsigned long val;
3741 u32 flags;
3742 int ret = strict_strtoul(buf, 0, &val);
3743 if (ret)
3744 return ret;
3745 flags = (u32)val;
3746
3747 mutex_lock(&priv->mutex);
3748 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3749 /* Cancel any currently running scans... */
3750 if (iwl_scan_cancel_timeout(priv, 100))
3751 IWL_WARNING("Could not cancel scan.\n");
3752 else {
3753 IWL_DEBUG_INFO("Commit rxon.flags = 0x%04X\n", flags);
3754 priv->staging_rxon.flags = cpu_to_le32(flags);
3755 iwl4965_commit_rxon(priv);
3756 }
3757 }
3758 mutex_unlock(&priv->mutex);
3759
3760 return count;
3761 }
3762
3763 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3764
3765 static ssize_t show_filter_flags(struct device *d,
3766 struct device_attribute *attr, char *buf)
3767 {
3768 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3769
3770 return sprintf(buf, "0x%04X\n",
3771 le32_to_cpu(priv->active_rxon.filter_flags));
3772 }
3773
3774 static ssize_t store_filter_flags(struct device *d,
3775 struct device_attribute *attr,
3776 const char *buf, size_t count)
3777 {
3778 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3779 unsigned long val;
3780 u32 filter_flags;
3781 int ret = strict_strtoul(buf, 0, &val);
3782 if (ret)
3783 return ret;
3784 filter_flags = (u32)val;
3785
3786 mutex_lock(&priv->mutex);
3787 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3788 /* Cancel any currently running scans... */
3789 if (iwl_scan_cancel_timeout(priv, 100))
3790 IWL_WARNING("Could not cancel scan.\n");
3791 else {
3792 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3793 "0x%04X\n", filter_flags);
3794 priv->staging_rxon.filter_flags =
3795 cpu_to_le32(filter_flags);
3796 iwl4965_commit_rxon(priv);
3797 }
3798 }
3799 mutex_unlock(&priv->mutex);
3800
3801 return count;
3802 }
3803
3804 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3805 store_filter_flags);
3806
3807 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
3808
3809 static ssize_t show_measurement(struct device *d,
3810 struct device_attribute *attr, char *buf)
3811 {
3812 struct iwl_priv *priv = dev_get_drvdata(d);
3813 struct iwl4965_spectrum_notification measure_report;
3814 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3815 u8 *data = (u8 *)&measure_report;
3816 unsigned long flags;
3817
3818 spin_lock_irqsave(&priv->lock, flags);
3819 if (!(priv->measurement_status & MEASUREMENT_READY)) {
3820 spin_unlock_irqrestore(&priv->lock, flags);
3821 return 0;
3822 }
3823 memcpy(&measure_report, &priv->measure_report, size);
3824 priv->measurement_status = 0;
3825 spin_unlock_irqrestore(&priv->lock, flags);
3826
3827 while (size && (PAGE_SIZE - len)) {
3828 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3829 PAGE_SIZE - len, 1);
3830 len = strlen(buf);
3831 if (PAGE_SIZE - len)
3832 buf[len++] = '\n';
3833
3834 ofs += 16;
3835 size -= min(size, 16U);
3836 }
3837
3838 return len;
3839 }
3840
3841 static ssize_t store_measurement(struct device *d,
3842 struct device_attribute *attr,
3843 const char *buf, size_t count)
3844 {
3845 struct iwl_priv *priv = dev_get_drvdata(d);
3846 struct ieee80211_measurement_params params = {
3847 .channel = le16_to_cpu(priv->active_rxon.channel),
3848 .start_time = cpu_to_le64(priv->last_tsf),
3849 .duration = cpu_to_le16(1),
3850 };
3851 u8 type = IWL_MEASURE_BASIC;
3852 u8 buffer[32];
3853 u8 channel;
3854
3855 if (count) {
3856 char *p = buffer;
3857 strncpy(buffer, buf, min(sizeof(buffer), count));
3858 channel = simple_strtoul(p, NULL, 0);
3859 if (channel)
3860 params.channel = channel;
3861
3862 p = buffer;
3863 while (*p && *p != ' ')
3864 p++;
3865 if (*p)
3866 type = simple_strtoul(p + 1, NULL, 0);
3867 }
3868
3869 IWL_DEBUG_INFO("Invoking measurement of type %d on "
3870 "channel %d (for '%s')\n", type, params.channel, buf);
3871 iwl4965_get_measurement(priv, &params, type);
3872
3873 return count;
3874 }
3875
3876 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3877 show_measurement, store_measurement);
3878 #endif /* CONFIG_IWLAGN_SPECTRUM_MEASUREMENT */
3879
3880 static ssize_t store_retry_rate(struct device *d,
3881 struct device_attribute *attr,
3882 const char *buf, size_t count)
3883 {
3884 struct iwl_priv *priv = dev_get_drvdata(d);
3885 long val;
3886 int ret = strict_strtol(buf, 10, &val);
3887 if (!ret)
3888 return ret;
3889
3890 priv->retry_rate = (val > 0) ? val : 1;
3891
3892 return count;
3893 }
3894
3895 static ssize_t show_retry_rate(struct device *d,
3896 struct device_attribute *attr, char *buf)
3897 {
3898 struct iwl_priv *priv = dev_get_drvdata(d);
3899 return sprintf(buf, "%d", priv->retry_rate);
3900 }
3901
3902 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3903 store_retry_rate);
3904
3905 static ssize_t store_power_level(struct device *d,
3906 struct device_attribute *attr,
3907 const char *buf, size_t count)
3908 {
3909 struct iwl_priv *priv = dev_get_drvdata(d);
3910 int ret;
3911 unsigned long mode;
3912
3913
3914 mutex_lock(&priv->mutex);
3915
3916 if (!iwl_is_ready(priv)) {
3917 ret = -EAGAIN;
3918 goto out;
3919 }
3920
3921 ret = strict_strtoul(buf, 10, &mode);
3922 if (ret)
3923 goto out;
3924
3925 ret = iwl_power_set_user_mode(priv, mode);
3926 if (ret) {
3927 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3928 goto out;
3929 }
3930 ret = count;
3931
3932 out:
3933 mutex_unlock(&priv->mutex);
3934 return ret;
3935 }
3936
3937 static ssize_t show_power_level(struct device *d,
3938 struct device_attribute *attr, char *buf)
3939 {
3940 struct iwl_priv *priv = dev_get_drvdata(d);
3941 int mode = priv->power_data.user_power_setting;
3942 int system = priv->power_data.system_power_setting;
3943 int level = priv->power_data.power_mode;
3944 char *p = buf;
3945
3946 switch (system) {
3947 case IWL_POWER_SYS_AUTO:
3948 p += sprintf(p, "SYSTEM:auto");
3949 break;
3950 case IWL_POWER_SYS_AC:
3951 p += sprintf(p, "SYSTEM:ac");
3952 break;
3953 case IWL_POWER_SYS_BATTERY:
3954 p += sprintf(p, "SYSTEM:battery");
3955 break;
3956 }
3957
3958 p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO)?"fixed":"auto");
3959 p += sprintf(p, "\tINDEX:%d", level);
3960 p += sprintf(p, "\n");
3961 return p - buf + 1;
3962 }
3963
3964 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3965 store_power_level);
3966
3967 static ssize_t show_channels(struct device *d,
3968 struct device_attribute *attr, char *buf)
3969 {
3970
3971 struct iwl_priv *priv = dev_get_drvdata(d);
3972 struct ieee80211_channel *channels = NULL;
3973 const struct ieee80211_supported_band *supp_band = NULL;
3974 int len = 0, i;
3975 int count = 0;
3976
3977 if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3978 return -EAGAIN;
3979
3980 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3981 channels = supp_band->channels;
3982 count = supp_band->n_channels;
3983
3984 len += sprintf(&buf[len],
3985 "Displaying %d channels in 2.4GHz band "
3986 "(802.11bg):\n", count);
3987
3988 for (i = 0; i < count; i++)
3989 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3990 ieee80211_frequency_to_channel(
3991 channels[i].center_freq),
3992 channels[i].max_power,
3993 channels[i].flags & IEEE80211_CHAN_RADAR ?
3994 " (IEEE 802.11h required)" : "",
3995 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3996 || (channels[i].flags &
3997 IEEE80211_CHAN_RADAR)) ? "" :
3998 ", IBSS",
3999 channels[i].flags &
4000 IEEE80211_CHAN_PASSIVE_SCAN ?
4001 "passive only" : "active/passive");
4002
4003 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
4004 channels = supp_band->channels;
4005 count = supp_band->n_channels;
4006
4007 len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
4008 "(802.11a):\n", count);
4009
4010 for (i = 0; i < count; i++)
4011 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
4012 ieee80211_frequency_to_channel(
4013 channels[i].center_freq),
4014 channels[i].max_power,
4015 channels[i].flags & IEEE80211_CHAN_RADAR ?
4016 " (IEEE 802.11h required)" : "",
4017 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
4018 || (channels[i].flags &
4019 IEEE80211_CHAN_RADAR)) ? "" :
4020 ", IBSS",
4021 channels[i].flags &
4022 IEEE80211_CHAN_PASSIVE_SCAN ?
4023 "passive only" : "active/passive");
4024
4025 return len;
4026 }
4027
4028 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
4029
4030 static ssize_t show_statistics(struct device *d,
4031 struct device_attribute *attr, char *buf)
4032 {
4033 struct iwl_priv *priv = dev_get_drvdata(d);
4034 u32 size = sizeof(struct iwl_notif_statistics);
4035 u32 len = 0, ofs = 0;
4036 u8 *data = (u8 *)&priv->statistics;
4037 int rc = 0;
4038
4039 if (!iwl_is_alive(priv))
4040 return -EAGAIN;
4041
4042 mutex_lock(&priv->mutex);
4043 rc = iwl_send_statistics_request(priv, 0);
4044 mutex_unlock(&priv->mutex);
4045
4046 if (rc) {
4047 len = sprintf(buf,
4048 "Error sending statistics request: 0x%08X\n", rc);
4049 return len;
4050 }
4051
4052 while (size && (PAGE_SIZE - len)) {
4053 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4054 PAGE_SIZE - len, 1);
4055 len = strlen(buf);
4056 if (PAGE_SIZE - len)
4057 buf[len++] = '\n';
4058
4059 ofs += 16;
4060 size -= min(size, 16U);
4061 }
4062
4063 return len;
4064 }
4065
4066 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
4067
4068 static ssize_t show_status(struct device *d,
4069 struct device_attribute *attr, char *buf)
4070 {
4071 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4072 if (!iwl_is_alive(priv))
4073 return -EAGAIN;
4074 return sprintf(buf, "0x%08x\n", (int)priv->status);
4075 }
4076
4077 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
4078
4079 /*****************************************************************************
4080 *
4081 * driver setup and teardown
4082 *
4083 *****************************************************************************/
4084
4085 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4086 {
4087 priv->workqueue = create_workqueue(DRV_NAME);
4088
4089 init_waitqueue_head(&priv->wait_command_queue);
4090
4091 INIT_WORK(&priv->up, iwl4965_bg_up);
4092 INIT_WORK(&priv->restart, iwl4965_bg_restart);
4093 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
4094 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
4095 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4096 INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
4097 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4098 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4099 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4100
4101 /* FIXME : remove when resolved PENDING */
4102 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
4103 iwl_setup_scan_deferred_work(priv);
4104 iwl_setup_power_deferred_work(priv);
4105
4106 if (priv->cfg->ops->lib->setup_deferred_work)
4107 priv->cfg->ops->lib->setup_deferred_work(priv);
4108
4109 init_timer(&priv->statistics_periodic);
4110 priv->statistics_periodic.data = (unsigned long)priv;
4111 priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
4112
4113 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4114 iwl4965_irq_tasklet, (unsigned long)priv);
4115 }
4116
4117 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4118 {
4119 if (priv->cfg->ops->lib->cancel_deferred_work)
4120 priv->cfg->ops->lib->cancel_deferred_work(priv);
4121
4122 cancel_delayed_work_sync(&priv->init_alive_start);
4123 cancel_delayed_work(&priv->scan_check);
4124 cancel_delayed_work_sync(&priv->set_power_save);
4125 cancel_delayed_work(&priv->alive_start);
4126 cancel_work_sync(&priv->beacon_update);
4127 del_timer_sync(&priv->statistics_periodic);
4128 }
4129
4130 static struct attribute *iwl4965_sysfs_entries[] = {
4131 &dev_attr_channels.attr,
4132 &dev_attr_flags.attr,
4133 &dev_attr_filter_flags.attr,
4134 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
4135 &dev_attr_measurement.attr,
4136 #endif
4137 &dev_attr_power_level.attr,
4138 &dev_attr_retry_rate.attr,
4139 &dev_attr_statistics.attr,
4140 &dev_attr_status.attr,
4141 &dev_attr_temperature.attr,
4142 &dev_attr_tx_power.attr,
4143 #ifdef CONFIG_IWLWIFI_DEBUG
4144 &dev_attr_debug_level.attr,
4145 #endif
4146 &dev_attr_version.attr,
4147
4148 NULL
4149 };
4150
4151 static struct attribute_group iwl4965_attribute_group = {
4152 .name = NULL, /* put in device directory */
4153 .attrs = iwl4965_sysfs_entries,
4154 };
4155
4156 static struct ieee80211_ops iwl4965_hw_ops = {
4157 .tx = iwl4965_mac_tx,
4158 .start = iwl4965_mac_start,
4159 .stop = iwl4965_mac_stop,
4160 .add_interface = iwl4965_mac_add_interface,
4161 .remove_interface = iwl4965_mac_remove_interface,
4162 .config = iwl4965_mac_config,
4163 .config_interface = iwl4965_mac_config_interface,
4164 .configure_filter = iwl4965_configure_filter,
4165 .set_key = iwl4965_mac_set_key,
4166 .update_tkip_key = iwl4965_mac_update_tkip_key,
4167 .get_stats = iwl4965_mac_get_stats,
4168 .get_tx_stats = iwl4965_mac_get_tx_stats,
4169 .conf_tx = iwl4965_mac_conf_tx,
4170 .reset_tsf = iwl4965_mac_reset_tsf,
4171 .bss_info_changed = iwl4965_bss_info_changed,
4172 .ampdu_action = iwl4965_mac_ampdu_action,
4173 .hw_scan = iwl_mac_hw_scan
4174 };
4175
4176 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4177 {
4178 int err = 0;
4179 struct iwl_priv *priv;
4180 struct ieee80211_hw *hw;
4181 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4182 unsigned long flags;
4183 DECLARE_MAC_BUF(mac);
4184
4185 /************************
4186 * 1. Allocating HW data
4187 ************************/
4188
4189 /* Disabling hardware scan means that mac80211 will perform scans
4190 * "the hard way", rather than using device's scan. */
4191 if (cfg->mod_params->disable_hw_scan) {
4192 if (cfg->mod_params->debug & IWL_DL_INFO)
4193 dev_printk(KERN_DEBUG, &(pdev->dev),
4194 "Disabling hw_scan\n");
4195 iwl4965_hw_ops.hw_scan = NULL;
4196 }
4197
4198 hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
4199 if (!hw) {
4200 err = -ENOMEM;
4201 goto out;
4202 }
4203 priv = hw->priv;
4204 /* At this point both hw and priv are allocated. */
4205
4206 SET_IEEE80211_DEV(hw, &pdev->dev);
4207
4208 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
4209 priv->cfg = cfg;
4210 priv->pci_dev = pdev;
4211
4212 #ifdef CONFIG_IWLWIFI_DEBUG
4213 priv->debug_level = priv->cfg->mod_params->debug;
4214 atomic_set(&priv->restrict_refcnt, 0);
4215 #endif
4216
4217 /**************************
4218 * 2. Initializing PCI bus
4219 **************************/
4220 if (pci_enable_device(pdev)) {
4221 err = -ENODEV;
4222 goto out_ieee80211_free_hw;
4223 }
4224
4225 pci_set_master(pdev);
4226
4227 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
4228 if (!err)
4229 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
4230 if (err) {
4231 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4232 if (!err)
4233 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
4234 /* both attempts failed: */
4235 if (err) {
4236 printk(KERN_WARNING "%s: No suitable DMA available.\n",
4237 DRV_NAME);
4238 goto out_pci_disable_device;
4239 }
4240 }
4241
4242 err = pci_request_regions(pdev, DRV_NAME);
4243 if (err)
4244 goto out_pci_disable_device;
4245
4246 pci_set_drvdata(pdev, priv);
4247
4248
4249 /***********************
4250 * 3. Read REV register
4251 ***********************/
4252 priv->hw_base = pci_iomap(pdev, 0, 0);
4253 if (!priv->hw_base) {
4254 err = -ENODEV;
4255 goto out_pci_release_regions;
4256 }
4257
4258 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
4259 (unsigned long long) pci_resource_len(pdev, 0));
4260 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
4261
4262 iwl_hw_detect(priv);
4263 printk(KERN_INFO DRV_NAME
4264 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
4265 priv->cfg->name, priv->hw_rev);
4266
4267 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4268 * PCI Tx retries from interfering with C3 CPU state */
4269 pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
4270
4271 /* amp init */
4272 err = priv->cfg->ops->lib->apm_ops.init(priv);
4273 if (err < 0) {
4274 IWL_DEBUG_INFO("Failed to init APMG\n");
4275 goto out_iounmap;
4276 }
4277 /*****************
4278 * 4. Read EEPROM
4279 *****************/
4280 /* Read the EEPROM */
4281 err = iwl_eeprom_init(priv);
4282 if (err) {
4283 IWL_ERROR("Unable to init EEPROM\n");
4284 goto out_iounmap;
4285 }
4286 err = iwl_eeprom_check_version(priv);
4287 if (err)
4288 goto out_iounmap;
4289
4290 /* extract MAC Address */
4291 iwl_eeprom_get_mac(priv, priv->mac_addr);
4292 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
4293 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4294
4295 /************************
4296 * 5. Setup HW constants
4297 ************************/
4298 if (iwl_set_hw_params(priv)) {
4299 IWL_ERROR("failed to set hw parameters\n");
4300 goto out_free_eeprom;
4301 }
4302
4303 /*******************
4304 * 6. Setup priv
4305 *******************/
4306
4307 err = iwl_init_drv(priv);
4308 if (err)
4309 goto out_free_eeprom;
4310 /* At this point both hw and priv are initialized. */
4311
4312 /**********************************
4313 * 7. Initialize module parameters
4314 **********************************/
4315
4316 /* Disable radio (SW RF KILL) via parameter when loading driver */
4317 if (priv->cfg->mod_params->disable) {
4318 set_bit(STATUS_RF_KILL_SW, &priv->status);
4319 IWL_DEBUG_INFO("Radio disabled.\n");
4320 }
4321
4322 /********************
4323 * 8. Setup services
4324 ********************/
4325 spin_lock_irqsave(&priv->lock, flags);
4326 iwl4965_disable_interrupts(priv);
4327 spin_unlock_irqrestore(&priv->lock, flags);
4328
4329 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4330 if (err) {
4331 IWL_ERROR("failed to create sysfs device attributes\n");
4332 goto out_uninit_drv;
4333 }
4334
4335
4336 iwl_setup_deferred_work(priv);
4337 iwl_setup_rx_handlers(priv);
4338
4339 /********************
4340 * 9. Conclude
4341 ********************/
4342 pci_save_state(pdev);
4343 pci_disable_device(pdev);
4344
4345 /**********************************
4346 * 10. Setup and register mac80211
4347 **********************************/
4348
4349 err = iwl_setup_mac(priv);
4350 if (err)
4351 goto out_remove_sysfs;
4352
4353 err = iwl_dbgfs_register(priv, DRV_NAME);
4354 if (err)
4355 IWL_ERROR("failed to create debugfs files\n");
4356
4357 err = iwl_rfkill_init(priv);
4358 if (err)
4359 IWL_ERROR("Unable to initialize RFKILL system. "
4360 "Ignoring error: %d\n", err);
4361 iwl_power_initialize(priv);
4362 return 0;
4363
4364 out_remove_sysfs:
4365 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4366 out_uninit_drv:
4367 iwl_uninit_drv(priv);
4368 out_free_eeprom:
4369 iwl_eeprom_free(priv);
4370 out_iounmap:
4371 pci_iounmap(pdev, priv->hw_base);
4372 out_pci_release_regions:
4373 pci_release_regions(pdev);
4374 pci_set_drvdata(pdev, NULL);
4375 out_pci_disable_device:
4376 pci_disable_device(pdev);
4377 out_ieee80211_free_hw:
4378 ieee80211_free_hw(priv->hw);
4379 out:
4380 return err;
4381 }
4382
4383 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
4384 {
4385 struct iwl_priv *priv = pci_get_drvdata(pdev);
4386 unsigned long flags;
4387
4388 if (!priv)
4389 return;
4390
4391 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4392
4393 iwl_dbgfs_unregister(priv);
4394 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4395
4396 /* ieee80211_unregister_hw call wil cause iwl4965_mac_stop to
4397 * to be called and iwl4965_down since we are removing the device
4398 * we need to set STATUS_EXIT_PENDING bit.
4399 */
4400 set_bit(STATUS_EXIT_PENDING, &priv->status);
4401 if (priv->mac80211_registered) {
4402 ieee80211_unregister_hw(priv->hw);
4403 priv->mac80211_registered = 0;
4404 } else {
4405 iwl4965_down(priv);
4406 }
4407
4408 /* make sure we flush any pending irq or
4409 * tasklet for the driver
4410 */
4411 spin_lock_irqsave(&priv->lock, flags);
4412 iwl4965_disable_interrupts(priv);
4413 spin_unlock_irqrestore(&priv->lock, flags);
4414
4415 iwl_synchronize_irq(priv);
4416
4417 iwl_rfkill_unregister(priv);
4418 iwl4965_dealloc_ucode_pci(priv);
4419
4420 if (priv->rxq.bd)
4421 iwl_rx_queue_free(priv, &priv->rxq);
4422 iwl_hw_txq_ctx_free(priv);
4423
4424 iwl_clear_stations_table(priv);
4425 iwl_eeprom_free(priv);
4426
4427
4428 /*netif_stop_queue(dev); */
4429 flush_workqueue(priv->workqueue);
4430
4431 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
4432 * priv->workqueue... so we can't take down the workqueue
4433 * until now... */
4434 destroy_workqueue(priv->workqueue);
4435 priv->workqueue = NULL;
4436
4437 pci_iounmap(pdev, priv->hw_base);
4438 pci_release_regions(pdev);
4439 pci_disable_device(pdev);
4440 pci_set_drvdata(pdev, NULL);
4441
4442 iwl_uninit_drv(priv);
4443
4444 if (priv->ibss_beacon)
4445 dev_kfree_skb(priv->ibss_beacon);
4446
4447 ieee80211_free_hw(priv->hw);
4448 }
4449
4450 #ifdef CONFIG_PM
4451
4452 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4453 {
4454 struct iwl_priv *priv = pci_get_drvdata(pdev);
4455
4456 if (priv->is_open) {
4457 set_bit(STATUS_IN_SUSPEND, &priv->status);
4458 iwl4965_mac_stop(priv->hw);
4459 priv->is_open = 1;
4460 }
4461
4462 pci_set_power_state(pdev, PCI_D3hot);
4463
4464 return 0;
4465 }
4466
4467 static int iwl4965_pci_resume(struct pci_dev *pdev)
4468 {
4469 struct iwl_priv *priv = pci_get_drvdata(pdev);
4470
4471 pci_set_power_state(pdev, PCI_D0);
4472
4473 if (priv->is_open)
4474 iwl4965_mac_start(priv->hw);
4475
4476 clear_bit(STATUS_IN_SUSPEND, &priv->status);
4477 return 0;
4478 }
4479
4480 #endif /* CONFIG_PM */
4481
4482 /*****************************************************************************
4483 *
4484 * driver and module entry point
4485 *
4486 *****************************************************************************/
4487
4488 /* Hardware specific file defines the PCI IDs table for that hardware module */
4489 static struct pci_device_id iwl_hw_card_ids[] = {
4490 #ifdef CONFIG_IWL4965
4491 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4492 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4493 #endif /* CONFIG_IWL4965 */
4494 #ifdef CONFIG_IWL5000
4495 {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
4496 {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
4497 {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
4498 {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
4499 {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
4500 {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
4501 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4502 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4503 {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
4504 {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
4505 {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
4506 #endif /* CONFIG_IWL5000 */
4507 {0}
4508 };
4509 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4510
4511 static struct pci_driver iwl_driver = {
4512 .name = DRV_NAME,
4513 .id_table = iwl_hw_card_ids,
4514 .probe = iwl4965_pci_probe,
4515 .remove = __devexit_p(iwl4965_pci_remove),
4516 #ifdef CONFIG_PM
4517 .suspend = iwl4965_pci_suspend,
4518 .resume = iwl4965_pci_resume,
4519 #endif
4520 };
4521
4522 static int __init iwl4965_init(void)
4523 {
4524
4525 int ret;
4526 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4527 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4528
4529 ret = iwlagn_rate_control_register();
4530 if (ret) {
4531 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4532 return ret;
4533 }
4534
4535 ret = pci_register_driver(&iwl_driver);
4536 if (ret) {
4537 IWL_ERROR("Unable to initialize PCI module\n");
4538 goto error_register;
4539 }
4540
4541 return ret;
4542
4543 error_register:
4544 iwlagn_rate_control_unregister();
4545 return ret;
4546 }
4547
4548 static void __exit iwl4965_exit(void)
4549 {
4550 pci_unregister_driver(&iwl_driver);
4551 iwlagn_rate_control_unregister();
4552 }
4553
4554 module_exit(iwl4965_exit);
4555 module_init(iwl4965_init);
Linux kernel - Deliverables
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