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iwlwifi: setup correctly L1 L0S pi link values
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl4965-base.c
CommitLineData
b481de9c
ZY		 1/******************************************************************************
2 *
eb7ae89c 3 * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
b481de9c
ZY		 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
b481de9c
ZY		 30#include <linux/kernel.h>
31#include <linux/module.h>
32#include <linux/version.h>
33#include <linux/init.h>
34#include <linux/pci.h>
35#include <linux/dma-mapping.h>
36#include <linux/delay.h>
37#include <linux/skbuff.h>
38#include <linux/netdevice.h>
39#include <linux/wireless.h>
40#include <linux/firmware.h>
b481de9c
ZY		 41#include <linux/etherdevice.h>
42#include <linux/if_arp.h>
43
b481de9c
ZY		 44#include <net/mac80211.h>
45
46#include <asm/div64.h>
47
6bc913bd 48#include "iwl-eeprom.h"
3e0d4cb1 49#include "iwl-dev.h"
fee1247a 50#include "iwl-core.h"
3395f6e9 51#include "iwl-io.h"
b481de9c 52#include "iwl-helpers.h"
6974e363 53#include "iwl-sta.h"
f0832f13 54#include "iwl-calib.h"
b481de9c 55
416e1438 56
b481de9c
ZY		 57/******************************************************************************
58 *
59 * module boiler plate
60 *
61 ******************************************************************************/
62
b481de9c
ZY		 63/*
64 * module name, copyright, version, etc.
65 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
66 */
67
68#define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
69
0a6857e7 70#ifdef CONFIG_IWLWIFI_DEBUG
b481de9c
ZY		 71#define VD "d"
72#else
73#define VD
74#endif
75
c8b0e6e1 76#ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
b481de9c
ZY		 77#define VS "s"
78#else
79#define VS
80#endif
81
df48c323 82#define DRV_VERSION IWLWIFI_VERSION VD VS
b481de9c 83
b481de9c
ZY		 84
85MODULE_DESCRIPTION(DRV_DESCRIPTION);
86MODULE_VERSION(DRV_VERSION);
87MODULE_AUTHOR(DRV_COPYRIGHT);
88MODULE_LICENSE("GPL");
89
d1141dfb 90static const struct ieee80211_supported_band *iwl_get_hw_mode(
c79dd5b5 91 struct iwl_priv *priv, enum ieee80211_band band)
b481de9c 92{
8318d78a 93 return priv->hw->wiphy->bands[band];
b481de9c
ZY		 94}
95
bb8c093b 96static int iwl4965_is_empty_essid(const char *essid, int essid_len)
b481de9c
ZY		 97{
98 /* Single white space is for Linksys APs */
99 if (essid_len == 1 && essid[0] == ' ')
100 return 1;
101
102 /* Otherwise, if the entire essid is 0, we assume it is hidden */
103 while (essid_len) {
104 essid_len--;
105 if (essid[essid_len] != '\0')
106 return 0;
107 }
108
109 return 1;
110}
111
bb8c093b 112static const char *iwl4965_escape_essid(const char *essid, u8 essid_len)
b481de9c
ZY		 113{
114 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
115 const char *s = essid;
116 char *d = escaped;
117
bb8c093b 118 if (iwl4965_is_empty_essid(essid, essid_len)) {
b481de9c
ZY		 119 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
120 return escaped;
121 }
122
123 essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
124 while (essid_len--) {
125 if (*s == '\0') {
126 *d++ = '\\';
127 *d++ = '0';
128 s++;
129 } else
130 *d++ = *s++;
131 }
132 *d = '\0';
133 return escaped;
134}
135
b481de9c 136/*************** STATION TABLE MANAGEMENT ****
9fbab516 137 * mac80211 should be examined to determine if sta_info is duplicating
b481de9c
ZY		 138 * the functionality provided here
139 */
140
141/**************************************************************/
142
01ebd063 143#if 0 /* temporary disable till we add real remove station */
6440adb5
CB		 144/**
145 * iwl4965_remove_station - Remove driver's knowledge of station.
146 *
147 * NOTE: This does not remove station from device's station table.
148 */
c79dd5b5 149static u8 iwl4965_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
b481de9c
ZY		 150{
151 int index = IWL_INVALID_STATION;
152 int i;
153 unsigned long flags;
154
155 spin_lock_irqsave(&priv->sta_lock, flags);
156
157 if (is_ap)
158 index = IWL_AP_ID;
159 else if (is_broadcast_ether_addr(addr))
5425e490 160 index = priv->hw_params.bcast_sta_id;
b481de9c 161 else
5425e490 162 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++)
b481de9c
ZY		 163 if (priv->stations[i].used &&
164 !compare_ether_addr(priv->stations[i].sta.sta.addr,
165 addr)) {
166 index = i;
167 break;
168 }
169
170 if (unlikely(index == IWL_INVALID_STATION))
171 goto out;
172
173 if (priv->stations[index].used) {
174 priv->stations[index].used = 0;
175 priv->num_stations--;
176 }
177
178 BUG_ON(priv->num_stations < 0);
179
180out:
181 spin_unlock_irqrestore(&priv->sta_lock, flags);
182 return 0;
183}
556f8db7 184#endif
b481de9c 185
b481de9c 186
b481de9c 187
deb09c43
EG		 188static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
189{
c1adf9fb 190 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
deb09c43
EG		 191
192 if (hw_decrypt)
193 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
194 else
195 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
196
197}
198
b481de9c 199/**
bb8c093b 200 * iwl4965_check_rxon_cmd - validate RXON structure is valid
b481de9c
ZY		 201 *
202 * NOTE: This is really only useful during development and can eventually
203 * be #ifdef'd out once the driver is stable and folks aren't actively
204 * making changes
205 */
c1adf9fb 206static int iwl4965_check_rxon_cmd(struct iwl_rxon_cmd *rxon)
b481de9c
ZY		 207{
208 int error = 0;
209 int counter = 1;
210
211 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
212 error |= le32_to_cpu(rxon->flags &
213 (RXON_FLG_TGJ_NARROW_BAND_MSK |
214 RXON_FLG_RADAR_DETECT_MSK));
215 if (error)
216 IWL_WARNING("check 24G fields %d | %d\n",
217 counter++, error);
218 } else {
219 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
220 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
221 if (error)
222 IWL_WARNING("check 52 fields %d | %d\n",
223 counter++, error);
224 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
225 if (error)
226 IWL_WARNING("check 52 CCK %d | %d\n",
227 counter++, error);
228 }
229 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
230 if (error)
231 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
232
233 /* make sure basic rates 6Mbps and 1Mbps are supported */
234 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
235 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
236 if (error)
237 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
238
239 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
240 if (error)
241 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
242
243 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
244 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
245 if (error)
246 IWL_WARNING("check CCK and short slot %d | %d\n",
247 counter++, error);
248
249 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
250 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
251 if (error)
252 IWL_WARNING("check CCK & auto detect %d | %d\n",
253 counter++, error);
254
255 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
256 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
257 if (error)
258 IWL_WARNING("check TGG and auto detect %d | %d\n",
259 counter++, error);
260
261 if (error)
262 IWL_WARNING("Tuning to channel %d\n",
263 le16_to_cpu(rxon->channel));
264
265 if (error) {
bb8c093b 266 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
b481de9c
ZY		 267 return -1;
268 }
269 return 0;
270}
271
272/**
9fbab516 273 * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
01ebd063 274 * @priv: staging_rxon is compared to active_rxon
b481de9c 275 *
9fbab516
BC		 276 * If the RXON structure is changing enough to require a new tune,
277 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
278 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
b481de9c 279 */
c79dd5b5 280static int iwl4965_full_rxon_required(struct iwl_priv *priv)
b481de9c
ZY		 281{
282
283 /* These items are only settable from the full RXON command */
284 if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
285 compare_ether_addr(priv->staging_rxon.bssid_addr,
286 priv->active_rxon.bssid_addr) ||
287 compare_ether_addr(priv->staging_rxon.node_addr,
288 priv->active_rxon.node_addr) ||
289 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
290 priv->active_rxon.wlap_bssid_addr) ||
291 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
292 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
293 (priv->staging_rxon.air_propagation !=
294 priv->active_rxon.air_propagation) ||
295 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
296 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
297 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
298 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
299 (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
300 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
301 return 1;
302
303 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
304 * be updated with the RXON_ASSOC command -- however only some
305 * flag transitions are allowed using RXON_ASSOC */
306
307 /* Check if we are not switching bands */
308 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
309 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
310 return 1;
311
312 /* Check if we are switching association toggle */
313 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
314 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
315 return 1;
316
317 return 0;
318}
319
b481de9c 320/**
bb8c093b 321 * iwl4965_commit_rxon - commit staging_rxon to hardware
b481de9c 322 *
01ebd063 323 * The RXON command in staging_rxon is committed to the hardware and
b481de9c
ZY		 324 * the active_rxon structure is updated with the new data. This
325 * function correctly transitions out of the RXON_ASSOC_MSK state if
326 * a HW tune is required based on the RXON structure changes.
327 */
c79dd5b5 328static int iwl4965_commit_rxon(struct iwl_priv *priv)
b481de9c
ZY		 329{
330 /* cast away the const for active_rxon in this function */
c1adf9fb 331 struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
0795af57 332 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 333 int rc = 0;
334
fee1247a 335 if (!iwl_is_alive(priv))
b481de9c
ZY		 336 return -1;
337
338 /* always get timestamp with Rx frame */
339 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
340
bb8c093b 341 rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
b481de9c
ZY		 342 if (rc) {
343 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
344 return -EINVAL;
345 }
346
347 /* If we don't need to send a full RXON, we can use
bb8c093b 348 * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
b481de9c 349 * and other flags for the current radio configuration. */
bb8c093b 350 if (!iwl4965_full_rxon_required(priv)) {
7e8c519e 351 rc = iwl_send_rxon_assoc(priv);
b481de9c
ZY		 352 if (rc) {
353 IWL_ERROR("Error setting RXON_ASSOC "
354 "configuration (%d).\n", rc);
355 return rc;
356 }
357
358 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
359
360 return 0;
361 }
362
363 /* station table will be cleared */
364 priv->assoc_station_added = 0;
365
b481de9c
ZY		 366 /* If we are currently associated and the new config requires
367 * an RXON_ASSOC and the new config wants the associated mask enabled,
368 * we must clear the associated from the active configuration
369 * before we apply the new config */
3109ece1 370 if (iwl_is_associated(priv) &&
b481de9c
ZY		 371 (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
372 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
373 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
374
857485c0 375 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
c1adf9fb 376 sizeof(struct iwl_rxon_cmd),
b481de9c
ZY		 377 &priv->active_rxon);
378
379 /* If the mask clearing failed then we set
380 * active_rxon back to what it was previously */
381 if (rc) {
382 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
383 IWL_ERROR("Error clearing ASSOC_MSK on current "
384 "configuration (%d).\n", rc);
385 return rc;
386 }
b481de9c
ZY		 387 }
388
389 IWL_DEBUG_INFO("Sending RXON\n"
390 "* with%s RXON_FILTER_ASSOC_MSK\n"
391 "* channel = %d\n"
0795af57 392 "* bssid = %s\n",
b481de9c
ZY		 393 ((priv->staging_rxon.filter_flags &
394 RXON_FILTER_ASSOC_MSK) ? "" : "out"),
395 le16_to_cpu(priv->staging_rxon.channel),
0795af57 396 print_mac(mac, priv->staging_rxon.bssid_addr));
b481de9c 397
099b40b7 398 iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
b481de9c 399 /* Apply the new configuration */
857485c0 400 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
c1adf9fb 401 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
b481de9c
ZY		 402 if (rc) {
403 IWL_ERROR("Error setting new configuration (%d).\n", rc);
404 return rc;
405 }
406
bf85ea4f 407 iwlcore_clear_stations_table(priv);
556f8db7 408
b481de9c
ZY		 409 if (!priv->error_recovering)
410 priv->start_calib = 0;
411
f0832f13 412 iwl_init_sensitivity(priv);
b481de9c
ZY		 413
414 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
415
416 /* If we issue a new RXON command which required a tune then we must
417 * send a new TXPOWER command or we won't be able to Tx any frames */
bb8c093b 418 rc = iwl4965_hw_reg_send_txpower(priv);
b481de9c
ZY		 419 if (rc) {
420 IWL_ERROR("Error setting Tx power (%d).\n", rc);
421 return rc;
422 }
423
424 /* Add the broadcast address so we can send broadcast frames */
4f40e4d9 425 if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
b481de9c
ZY		 426 IWL_INVALID_STATION) {
427 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
428 return -EIO;
429 }
430
431 /* If we have set the ASSOC_MSK and we are in BSS mode then
432 * add the IWL_AP_ID to the station rate table */
3109ece1 433 if (iwl_is_associated(priv) &&
b481de9c 434 (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
4f40e4d9 435 if (iwl_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
b481de9c
ZY		 436 == IWL_INVALID_STATION) {
437 IWL_ERROR("Error adding AP address for transmit.\n");
438 return -EIO;
439 }
440 priv->assoc_station_added = 1;
6974e363
EG		 441 if (priv->default_wep_key &&
442 iwl_send_static_wepkey_cmd(priv, 0))
443 IWL_ERROR("Could not send WEP static key.\n");
b481de9c
ZY		 444 }
445
446 return 0;
447}
448
5da4b55f
MA		 449void iwl4965_update_chain_flags(struct iwl_priv *priv)
450{
451
c7de35cd 452 iwl_set_rxon_chain(priv);
5da4b55f
MA		 453 iwl4965_commit_rxon(priv);
454}
455
c79dd5b5 456static int iwl4965_send_bt_config(struct iwl_priv *priv)
b481de9c 457{
bb8c093b 458 struct iwl4965_bt_cmd bt_cmd = {
b481de9c
ZY		 459 .flags = 3,
460 .lead_time = 0xAA,
461 .max_kill = 1,
462 .kill_ack_mask = 0,
463 .kill_cts_mask = 0,
464 };
465
857485c0 466 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
bb8c093b 467 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
b481de9c
ZY		 468}
469
c79dd5b5 470static int iwl4965_send_scan_abort(struct iwl_priv *priv)
b481de9c 471{
db11d634
TW		 472 int ret = 0;
473 struct iwl_rx_packet *res;
857485c0 474 struct iwl_host_cmd cmd = {
b481de9c
ZY		 475 .id = REPLY_SCAN_ABORT_CMD,
476 .meta.flags = CMD_WANT_SKB,
477 };
478
479 /* If there isn't a scan actively going on in the hardware
480 * then we are in between scan bands and not actually
481 * actively scanning, so don't send the abort command */
482 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
483 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
484 return 0;
485 }
486
db11d634
TW		 487 ret = iwl_send_cmd_sync(priv, &cmd);
488 if (ret) {
b481de9c 489 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
db11d634 490 return ret;
b481de9c
ZY		 491 }
492
db11d634 493 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
b481de9c
ZY		 494 if (res->u.status != CAN_ABORT_STATUS) {
495 /* The scan abort will return 1 for success or
496 * 2 for "failure". A failure condition can be
497 * due to simply not being in an active scan which
498 * can occur if we send the scan abort before we
499 * the microcode has notified us that a scan is
500 * completed. */
501 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
502 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
503 clear_bit(STATUS_SCAN_HW, &priv->status);
504 }
505
506 dev_kfree_skb_any(cmd.meta.u.skb);
507
db11d634 508 return ret;
b481de9c
ZY		 509}
510
b481de9c
ZY		 511/*
512 * CARD_STATE_CMD
513 *
9fbab516 514 * Use: Sets the device's internal card state to enable, disable, or halt
b481de9c
ZY		 515 *
516 * When in the 'enable' state the card operates as normal.
517 * When in the 'disable' state, the card enters into a low power mode.
518 * When in the 'halt' state, the card is shut down and must be fully
519 * restarted to come back on.
520 */
c79dd5b5 521static int iwl4965_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
b481de9c 522{
857485c0 523 struct iwl_host_cmd cmd = {
b481de9c
ZY		 524 .id = REPLY_CARD_STATE_CMD,
525 .len = sizeof(u32),
526 .data = &flags,
527 .meta.flags = meta_flag,
528 };
529
857485c0 530 return iwl_send_cmd(priv, &cmd);
b481de9c
ZY		 531}
532
fcab423d 533static void iwl_clear_free_frames(struct iwl_priv *priv)
b481de9c
ZY		 534{
535 struct list_head *element;
536
537 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
538 priv->frames_count);
539
540 while (!list_empty(&priv->free_frames)) {
541 element = priv->free_frames.next;
542 list_del(element);
fcab423d 543 kfree(list_entry(element, struct iwl_frame, list));
b481de9c
ZY		 544 priv->frames_count--;
545 }
546
547 if (priv->frames_count) {
548 IWL_WARNING("%d frames still in use. Did we lose one?\n",
549 priv->frames_count);
550 priv->frames_count = 0;
551 }
552}
553
fcab423d 554static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
b481de9c 555{
fcab423d 556 struct iwl_frame *frame;
b481de9c
ZY		 557 struct list_head *element;
558 if (list_empty(&priv->free_frames)) {
559 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
560 if (!frame) {
561 IWL_ERROR("Could not allocate frame!\n");
562 return NULL;
563 }
564
565 priv->frames_count++;
566 return frame;
567 }
568
569 element = priv->free_frames.next;
570 list_del(element);
fcab423d 571 return list_entry(element, struct iwl_frame, list);
b481de9c
ZY		 572}
573
fcab423d 574static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
b481de9c
ZY		 575{
576 memset(frame, 0, sizeof(*frame));
577 list_add(&frame->list, &priv->free_frames);
578}
579
c79dd5b5 580unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
b481de9c
ZY		 581 struct ieee80211_hdr *hdr,
582 const u8 *dest, int left)
583{
584
3109ece1 585 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
b481de9c
ZY		 586 ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
587 (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
588 return 0;
589
590 if (priv->ibss_beacon->len > left)
591 return 0;
592
593 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
594
595 return priv->ibss_beacon->len;
596}
597
39e88504 598static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
b481de9c 599{
39e88504
GC		 600 int i;
601 int rate_mask;
602
603 /* Set rate mask*/
604 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
605 rate_mask = priv->active_rate_basic & 0xF;
606 else
607 rate_mask = priv->active_rate_basic & 0xFF0;
b481de9c 608
39e88504 609 /* Find lowest valid rate */
b481de9c 610 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1826dcc0 611 i = iwl_rates[i].next_ieee) {
b481de9c 612 if (rate_mask & (1 << i))
1826dcc0 613 return iwl_rates[i].plcp;
b481de9c
ZY		 614 }
615
39e88504
GC		 616 /* No valid rate was found. Assign the lowest one */
617 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
618 return IWL_RATE_1M_PLCP;
619 else
620 return IWL_RATE_6M_PLCP;
b481de9c
ZY		 621}
622
c79dd5b5 623static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
b481de9c 624{
fcab423d 625 struct iwl_frame *frame;
b481de9c
ZY		 626 unsigned int frame_size;
627 int rc;
628 u8 rate;
629
fcab423d 630 frame = iwl_get_free_frame(priv);
b481de9c
ZY		 631
632 if (!frame) {
633 IWL_ERROR("Could not obtain free frame buffer for beacon "
634 "command.\n");
635 return -ENOMEM;
636 }
637
39e88504 638 rate = iwl4965_rate_get_lowest_plcp(priv);
b481de9c 639
bb8c093b 640 frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
b481de9c 641
857485c0 642 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
b481de9c
ZY		 643 &frame->u.cmd[0]);
644
fcab423d 645 iwl_free_frame(priv, frame);
b481de9c
ZY		 646
647 return rc;
648}
649
b481de9c
ZY		 650/******************************************************************************
651 *
652 * Misc. internal state and helper functions
653 *
654 ******************************************************************************/
b481de9c 655
b481de9c 656/**
bb8c093b 657 * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
b481de9c
ZY		 658 *
659 * return : set the bit for each supported rate insert in ie
660 */
bb8c093b 661static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
c7c46676 662 u16 basic_rate, int *left)
b481de9c
ZY		 663{
664 u16 ret_rates = 0, bit;
665 int i;
c7c46676
TW		 666 u8 *cnt = ie;
667 u8 *rates = ie + 1;
b481de9c
ZY		 668
669 for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
670 if (bit & supported_rate) {
671 ret_rates |= bit;
1826dcc0 672 rates[*cnt] = iwl_rates[i].ieee |
c7c46676
TW		 673 ((bit & basic_rate) ? 0x80 : 0x00);
674 (*cnt)++;
675 (*left)--;
676 if ((*left <= 0) ||
677 (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
b481de9c
ZY		 678 break;
679 }
680 }
681
682 return ret_rates;
683}
684
d1141dfb
EG		 685#ifdef CONFIG_IWL4965_HT
686static void iwl4965_ht_conf(struct iwl_priv *priv,
687 struct ieee80211_bss_conf *bss_conf)
688{
689 struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
690 struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
691 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
692
693 IWL_DEBUG_MAC80211("enter: \n");
694
695 iwl_conf->is_ht = bss_conf->assoc_ht;
696
697 if (!iwl_conf->is_ht)
698 return;
699
700 priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
701
702 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
a9841013 703 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
d1141dfb 704 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
a9841013 705 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
d1141dfb
EG		 706
707 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
708 iwl_conf->max_amsdu_size =
709 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
710
711 iwl_conf->supported_chan_width =
712 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
713 iwl_conf->extension_chan_offset =
714 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
715 /* If no above or below channel supplied disable FAT channel */
716 if (iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_ABOVE &&
717 iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_BELOW)
718 iwl_conf->supported_chan_width = 0;
719
720 iwl_conf->tx_mimo_ps_mode =
721 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
722 memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
723
724 iwl_conf->control_channel = ht_bss_conf->primary_channel;
725 iwl_conf->tx_chan_width =
726 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
727 iwl_conf->ht_protection =
728 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
729 iwl_conf->non_GF_STA_present =
730 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
731
732 IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
733 IWL_DEBUG_MAC80211("leave\n");
734}
735
736static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband,
737 u8 *pos, int *left)
738{
739 struct ieee80211_ht_cap *ht_cap;
740
741 if (!sband || !sband->ht_info.ht_supported)
742 return;
743
744 if (*left < sizeof(struct ieee80211_ht_cap))
745 return;
746
747 *pos++ = sizeof(struct ieee80211_ht_cap);
748 ht_cap = (struct ieee80211_ht_cap *) pos;
749
750 ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap);
751 memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16);
752 ht_cap->ampdu_params_info =
753 (sband->ht_info.ampdu_factor & IEEE80211_HT_CAP_AMPDU_FACTOR) |
754 ((sband->ht_info.ampdu_density << 2) &
755 IEEE80211_HT_CAP_AMPDU_DENSITY);
756 *left -= sizeof(struct ieee80211_ht_cap);
757}
758#else
759static inline void iwl4965_ht_conf(struct iwl_priv *priv,
760 struct ieee80211_bss_conf *bss_conf)
761{
762}
763static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband,
764 u8 *pos, int *left)
765{
766}
767#endif
768
769
b481de9c 770/**
bb8c093b 771 * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
b481de9c 772 */
c79dd5b5 773static u16 iwl4965_fill_probe_req(struct iwl_priv *priv,
78330fdd
TW		 774 enum ieee80211_band band,
775 struct ieee80211_mgmt *frame,
776 int left, int is_direct)
b481de9c
ZY		 777{
778 int len = 0;
779 u8 *pos = NULL;
bee488db 780 u16 active_rates, ret_rates, cck_rates, active_rate_basic;
78330fdd 781 const struct ieee80211_supported_band *sband =
d1141dfb 782 iwl_get_hw_mode(priv, band);
b481de9c
ZY		 783
784 /* Make sure there is enough space for the probe request,
785 * two mandatory IEs and the data */
786 left -= 24;
787 if (left < 0)
788 return 0;
789 len += 24;
790
791 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
57bd1bea 792 memcpy(frame->da, iwl_bcast_addr, ETH_ALEN);
b481de9c 793 memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
57bd1bea 794 memcpy(frame->bssid, iwl_bcast_addr, ETH_ALEN);
b481de9c
ZY		 795 frame->seq_ctrl = 0;
796
797 /* fill in our indirect SSID IE */
798 /* ...next IE... */
799
800 left -= 2;
801 if (left < 0)
802 return 0;
803 len += 2;
804 pos = &(frame->u.probe_req.variable[0]);
805 *pos++ = WLAN_EID_SSID;
806 *pos++ = 0;
807
808 /* fill in our direct SSID IE... */
809 if (is_direct) {
810 /* ...next IE... */
811 left -= 2 + priv->essid_len;
812 if (left < 0)
813 return 0;
814 /* ... fill it in... */
815 *pos++ = WLAN_EID_SSID;
816 *pos++ = priv->essid_len;
817 memcpy(pos, priv->essid, priv->essid_len);
818 pos += priv->essid_len;
819 len += 2 + priv->essid_len;
820 }
821
822 /* fill in supported rate */
823 /* ...next IE... */
824 left -= 2;
825 if (left < 0)
826 return 0;
c7c46676 827
b481de9c
ZY		 828 /* ... fill it in... */
829 *pos++ = WLAN_EID_SUPP_RATES;
830 *pos = 0;
c7c46676 831
bee488db 832 /* exclude 60M rate */
833 active_rates = priv->rates_mask;
834 active_rates &= ~IWL_RATE_60M_MASK;
835
836 active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
b481de9c 837
c7c46676 838 cck_rates = IWL_CCK_RATES_MASK & active_rates;
bb8c093b 839 ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
bee488db 840 active_rate_basic, &left);
c7c46676
TW		 841 active_rates &= ~ret_rates;
842
bb8c093b 843 ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
bee488db 844 active_rate_basic, &left);
c7c46676
TW		 845 active_rates &= ~ret_rates;
846
b481de9c
ZY		 847 len += 2 + *pos;
848 pos += (*pos) + 1;
c7c46676 849 if (active_rates == 0)
b481de9c
ZY		 850 goto fill_end;
851
852 /* fill in supported extended rate */
853 /* ...next IE... */
854 left -= 2;
855 if (left < 0)
856 return 0;
857 /* ... fill it in... */
858 *pos++ = WLAN_EID_EXT_SUPP_RATES;
859 *pos = 0;
bb8c093b 860 iwl4965_supported_rate_to_ie(pos, active_rates,
bee488db 861 active_rate_basic, &left);
b481de9c
ZY		 862 if (*pos > 0)
863 len += 2 + *pos;
864
b481de9c 865 fill_end:
d1141dfb
EG		 866 /* fill in HT IE */
867 left -= 2;
868 if (left < 0)
869 return 0;
870
871 *pos++ = WLAN_EID_HT_CAPABILITY;
872 *pos = 0;
873
874 iwl_ht_cap_to_ie(sband, pos, &left);
875
876 if (*pos > 0)
877 len += 2 + *pos;
b481de9c
ZY		 878 return (u16)len;
879}
880
881/*
882 * QoS support
883*/
c79dd5b5 884static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
bb8c093b 885 struct iwl4965_qosparam_cmd *qos)
b481de9c
ZY		 886{
887
857485c0 888 return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
bb8c093b 889 sizeof(struct iwl4965_qosparam_cmd), qos);
b481de9c
ZY		 890}
891
c79dd5b5 892static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
b481de9c
ZY		 893{
894 unsigned long flags;
895
b481de9c
ZY		 896 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
897 return;
898
899 if (!priv->qos_data.qos_enable)
900 return;
901
902 spin_lock_irqsave(&priv->lock, flags);
903 priv->qos_data.def_qos_parm.qos_flags = 0;
904
905 if (priv->qos_data.qos_cap.q_AP.queue_request &&
906 !priv->qos_data.qos_cap.q_AP.txop_request)
907 priv->qos_data.def_qos_parm.qos_flags |=
908 QOS_PARAM_FLG_TXOP_TYPE_MSK;
b481de9c
ZY		 909 if (priv->qos_data.qos_active)
910 priv->qos_data.def_qos_parm.qos_flags |=
911 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
912
c8b0e6e1 913#ifdef CONFIG_IWL4965_HT
fd105e79 914 if (priv->current_ht_config.is_ht)
f1f1f5c7 915 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
c8b0e6e1 916#endif /* CONFIG_IWL4965_HT */
f1f1f5c7 917
b481de9c
ZY		 918 spin_unlock_irqrestore(&priv->lock, flags);
919
3109ece1 920 if (force || iwl_is_associated(priv)) {
f1f1f5c7
TW		 921 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
922 priv->qos_data.qos_active,
923 priv->qos_data.def_qos_parm.qos_flags);
b481de9c 924
bb8c093b 925 iwl4965_send_qos_params_command(priv,
b481de9c
ZY		 926 &(priv->qos_data.def_qos_parm));
927 }
928}
929
c79dd5b5 930int iwl4965_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
b481de9c
ZY		 931{
932 /* Filter incoming packets to determine if they are targeted toward
933 * this network, discarding packets coming from ourselves */
934 switch (priv->iw_mode) {
935 case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source | BSSID */
936 /* packets from our adapter are dropped (echo) */
937 if (!compare_ether_addr(header->addr2, priv->mac_addr))
938 return 0;
939 /* {broad,multi}cast packets to our IBSS go through */
940 if (is_multicast_ether_addr(header->addr1))
941 return !compare_ether_addr(header->addr3, priv->bssid);
942 /* packets to our adapter go through */
943 return !compare_ether_addr(header->addr1, priv->mac_addr);
944 case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
945 /* packets from our adapter are dropped (echo) */
946 if (!compare_ether_addr(header->addr3, priv->mac_addr))
947 return 0;
948 /* {broad,multi}cast packets to our BSS go through */
949 if (is_multicast_ether_addr(header->addr1))
950 return !compare_ether_addr(header->addr2, priv->bssid);
951 /* packets to our adapter go through */
952 return !compare_ether_addr(header->addr1, priv->mac_addr);
69dc5d9d
TW		 953 default:
954 break;
b481de9c
ZY		 955 }
956
957 return 1;
958}
959
960#define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
961
bb8c093b 962static const char *iwl4965_get_tx_fail_reason(u32 status)
b481de9c
ZY		 963{
964 switch (status & TX_STATUS_MSK) {
965 case TX_STATUS_SUCCESS:
966 return "SUCCESS";
967 TX_STATUS_ENTRY(SHORT_LIMIT);
968 TX_STATUS_ENTRY(LONG_LIMIT);
969 TX_STATUS_ENTRY(FIFO_UNDERRUN);
970 TX_STATUS_ENTRY(MGMNT_ABORT);
971 TX_STATUS_ENTRY(NEXT_FRAG);
972 TX_STATUS_ENTRY(LIFE_EXPIRE);
973 TX_STATUS_ENTRY(DEST_PS);
974 TX_STATUS_ENTRY(ABORTED);
975 TX_STATUS_ENTRY(BT_RETRY);
976 TX_STATUS_ENTRY(STA_INVALID);
977 TX_STATUS_ENTRY(FRAG_DROPPED);
978 TX_STATUS_ENTRY(TID_DISABLE);
979 TX_STATUS_ENTRY(FRAME_FLUSHED);
980 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
981 TX_STATUS_ENTRY(TX_LOCKED);
982 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
983 }
984
985 return "UNKNOWN";
986}
987
988/**
bb8c093b 989 * iwl4965_scan_cancel - Cancel any currently executing HW scan
b481de9c
ZY		 990 *
991 * NOTE: priv->mutex is not required before calling this function
992 */
c79dd5b5 993static int iwl4965_scan_cancel(struct iwl_priv *priv)
b481de9c
ZY		 994{
995 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
996 clear_bit(STATUS_SCANNING, &priv->status);
997 return 0;
998 }
999
1000 if (test_bit(STATUS_SCANNING, &priv->status)) {
1001 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1002 IWL_DEBUG_SCAN("Queuing scan abort.\n");
1003 set_bit(STATUS_SCAN_ABORTING, &priv->status);
1004 queue_work(priv->workqueue, &priv->abort_scan);
1005
1006 } else
1007 IWL_DEBUG_SCAN("Scan abort already in progress.\n");
1008
1009 return test_bit(STATUS_SCANNING, &priv->status);
1010 }
1011
1012 return 0;
1013}
1014
1015/**
bb8c093b 1016 * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
b481de9c
ZY		 1017 * @ms: amount of time to wait (in milliseconds) for scan to abort
1018 *
1019 * NOTE: priv->mutex must be held before calling this function
1020 */
c79dd5b5 1021static int iwl4965_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
b481de9c
ZY		 1022{
1023 unsigned long now = jiffies;
1024 int ret;
1025
bb8c093b 1026 ret = iwl4965_scan_cancel(priv);
b481de9c
ZY		 1027 if (ret && ms) {
1028 mutex_unlock(&priv->mutex);
1029 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
1030 test_bit(STATUS_SCANNING, &priv->status))
1031 msleep(1);
1032 mutex_lock(&priv->mutex);
1033
1034 return test_bit(STATUS_SCANNING, &priv->status);
1035 }
1036
1037 return ret;
1038}
1039
c79dd5b5 1040static void iwl4965_sequence_reset(struct iwl_priv *priv)
b481de9c
ZY		 1041{
1042 /* Reset ieee stats */
1043
1044 /* We don't reset the net_device_stats (ieee->stats) on
1045 * re-association */
1046
1047 priv->last_seq_num = -1;
1048 priv->last_frag_num = -1;
1049 priv->last_packet_time = 0;
1050
bb8c093b 1051 iwl4965_scan_cancel(priv);
b481de9c
ZY		 1052}
1053
1054#define MAX_UCODE_BEACON_INTERVAL 4096
1055#define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
1056
bb8c093b 1057static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
b481de9c
ZY		 1058{
1059 u16 new_val = 0;
1060 u16 beacon_factor = 0;
1061
1062 beacon_factor =
1063 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
1064 / MAX_UCODE_BEACON_INTERVAL;
1065 new_val = beacon_val / beacon_factor;
1066
1067 return cpu_to_le16(new_val);
1068}
1069
c79dd5b5 1070static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
b481de9c
ZY		 1071{
1072 u64 interval_tm_unit;
1073 u64 tsf, result;
1074 unsigned long flags;
1075 struct ieee80211_conf *conf = NULL;
1076 u16 beacon_int = 0;
1077
1078 conf = ieee80211_get_hw_conf(priv->hw);
1079
1080 spin_lock_irqsave(&priv->lock, flags);
3109ece1
TW		 1081 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
1082 priv->rxon_timing.timestamp.dw[0] =
1083 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
b481de9c
ZY		 1084
1085 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
1086
3109ece1 1087 tsf = priv->timestamp;
b481de9c
ZY		 1088
1089 beacon_int = priv->beacon_int;
1090 spin_unlock_irqrestore(&priv->lock, flags);
1091
1092 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
1093 if (beacon_int == 0) {
1094 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
1095 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
1096 } else {
1097 priv->rxon_timing.beacon_interval =
1098 cpu_to_le16(beacon_int);
1099 priv->rxon_timing.beacon_interval =
bb8c093b 1100 iwl4965_adjust_beacon_interval(
b481de9c
ZY		 1101 le16_to_cpu(priv->rxon_timing.beacon_interval));
1102 }
1103
1104 priv->rxon_timing.atim_window = 0;
1105 } else {
1106 priv->rxon_timing.beacon_interval =
bb8c093b 1107 iwl4965_adjust_beacon_interval(conf->beacon_int);
b481de9c
ZY		 1108 /* TODO: we need to get atim_window from upper stack
1109 * for now we set to 0 */
1110 priv->rxon_timing.atim_window = 0;
1111 }
1112
1113 interval_tm_unit =
1114 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
1115 result = do_div(tsf, interval_tm_unit);
1116 priv->rxon_timing.beacon_init_val =
1117 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
1118
1119 IWL_DEBUG_ASSOC
1120 ("beacon interval %d beacon timer %d beacon tim %d\n",
1121 le16_to_cpu(priv->rxon_timing.beacon_interval),
1122 le32_to_cpu(priv->rxon_timing.beacon_init_val),
1123 le16_to_cpu(priv->rxon_timing.atim_window));
1124}
1125
c79dd5b5 1126static int iwl4965_scan_initiate(struct iwl_priv *priv)
b481de9c
ZY		 1127{
1128 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1129 IWL_ERROR("APs don't scan.\n");
1130 return 0;
1131 }
1132
fee1247a 1133 if (!iwl_is_ready_rf(priv)) {
b481de9c
ZY		 1134 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
1135 return -EIO;
1136 }
1137
1138 if (test_bit(STATUS_SCANNING, &priv->status)) {
1139 IWL_DEBUG_SCAN("Scan already in progress.\n");
1140 return -EAGAIN;
1141 }
1142
1143 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1144 IWL_DEBUG_SCAN("Scan request while abort pending. "
1145 "Queuing.\n");
1146 return -EAGAIN;
1147 }
1148
1149 IWL_DEBUG_INFO("Starting scan...\n");
1150 priv->scan_bands = 2;
1151 set_bit(STATUS_SCANNING, &priv->status);
1152 priv->scan_start = jiffies;
1153 priv->scan_pass_start = priv->scan_start;
1154
1155 queue_work(priv->workqueue, &priv->request_scan);
1156
1157 return 0;
1158}
1159
b481de9c 1160
c79dd5b5 1161static void iwl4965_set_flags_for_phymode(struct iwl_priv *priv,
8318d78a 1162 enum ieee80211_band band)
b481de9c 1163{
8318d78a 1164 if (band == IEEE80211_BAND_5GHZ) {
b481de9c
ZY		 1165 priv->staging_rxon.flags &=
1166 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1167 | RXON_FLG_CCK_MSK);
1168 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1169 } else {
508e32e1 1170 /* Copied from iwl4965_post_associate() */
b481de9c
ZY		 1171 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1172 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1173 else
1174 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1175
1176 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
1177 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1178
1179 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1180 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1181 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1182 }
1183}
1184
1185/*
01ebd063 1186 * initialize rxon structure with default values from eeprom
b481de9c 1187 */
c79dd5b5 1188static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
b481de9c 1189{
bf85ea4f 1190 const struct iwl_channel_info *ch_info;
b481de9c
ZY		 1191
1192 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1193
1194 switch (priv->iw_mode) {
1195 case IEEE80211_IF_TYPE_AP:
1196 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1197 break;
1198
1199 case IEEE80211_IF_TYPE_STA:
1200 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1201 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1202 break;
1203
1204 case IEEE80211_IF_TYPE_IBSS:
1205 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1206 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1207 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1208 RXON_FILTER_ACCEPT_GRP_MSK;
1209 break;
1210
1211 case IEEE80211_IF_TYPE_MNTR:
1212 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
1213 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
1214 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
1215 break;
69dc5d9d
TW		 1216 default:
1217 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
1218 break;
b481de9c
ZY		 1219 }
1220
1221#if 0
1222 /* TODO: Figure out when short_preamble would be set and cache from
1223 * that */
1224 if (!hw_to_local(priv->hw)->short_preamble)
1225 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1226 else
1227 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1228#endif
1229
8622e705 1230 ch_info = iwl_get_channel_info(priv, priv->band,
b481de9c
ZY		 1231 le16_to_cpu(priv->staging_rxon.channel));
1232
1233 if (!ch_info)
1234 ch_info = &priv->channel_info[0];
1235
1236 /*
1237 * in some case A channels are all non IBSS
1238 * in this case force B/G channel
1239 */
1240 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
1241 !(is_channel_ibss(ch_info)))
1242 ch_info = &priv->channel_info[0];
1243
1244 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
8318d78a 1245 priv->band = ch_info->band;
b481de9c 1246
8318d78a 1247 iwl4965_set_flags_for_phymode(priv, priv->band);
b481de9c
ZY		 1248
1249 priv->staging_rxon.ofdm_basic_rates =
1250 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1251 priv->staging_rxon.cck_basic_rates =
1252 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1253
1254 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
1255 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
1256 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1257 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1258 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1259 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
c7de35cd 1260 iwl_set_rxon_chain(priv);
b481de9c
ZY		 1261}
1262
c79dd5b5 1263static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
b481de9c 1264{
b481de9c 1265 if (mode == IEEE80211_IF_TYPE_IBSS) {
bf85ea4f 1266 const struct iwl_channel_info *ch_info;
b481de9c 1267
8622e705 1268 ch_info = iwl_get_channel_info(priv,
8318d78a 1269 priv->band,
b481de9c
ZY		 1270 le16_to_cpu(priv->staging_rxon.channel));
1271
1272 if (!ch_info || !is_channel_ibss(ch_info)) {
1273 IWL_ERROR("channel %d not IBSS channel\n",
1274 le16_to_cpu(priv->staging_rxon.channel));
1275 return -EINVAL;
1276 }
1277 }
1278
b481de9c
ZY		 1279 priv->iw_mode = mode;
1280
bb8c093b 1281 iwl4965_connection_init_rx_config(priv);
b481de9c
ZY		 1282 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1283
bf85ea4f 1284 iwlcore_clear_stations_table(priv);
b481de9c 1285
fde3571f 1286 /* dont commit rxon if rf-kill is on*/
fee1247a 1287 if (!iwl_is_ready_rf(priv))
fde3571f
MA		 1288 return -EAGAIN;
1289
1290 cancel_delayed_work(&priv->scan_check);
1291 if (iwl4965_scan_cancel_timeout(priv, 100)) {
1292 IWL_WARNING("Aborted scan still in progress after 100ms\n");
1293 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
1294 return -EAGAIN;
1295 }
1296
bb8c093b 1297 iwl4965_commit_rxon(priv);
b481de9c
ZY		 1298
1299 return 0;
1300}
1301
c79dd5b5 1302static void iwl4965_set_rate(struct iwl_priv *priv)
b481de9c 1303{
8318d78a 1304 const struct ieee80211_supported_band *hw = NULL;
b481de9c
ZY		 1305 struct ieee80211_rate *rate;
1306 int i;
1307
d1141dfb 1308 hw = iwl_get_hw_mode(priv, priv->band);
c4ba9621
SA		 1309 if (!hw) {
1310 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
1311 return;
1312 }
b481de9c
ZY		 1313
1314 priv->active_rate = 0;
1315 priv->active_rate_basic = 0;
1316
8318d78a
JB		 1317 for (i = 0; i < hw->n_bitrates; i++) {
1318 rate = &(hw->bitrates[i]);
1319 if (rate->hw_value < IWL_RATE_COUNT)
1320 priv->active_rate |= (1 << rate->hw_value);
b481de9c
ZY		 1321 }
1322
1323 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
1324 priv->active_rate, priv->active_rate_basic);
1325
1326 /*
1327 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
1328 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
1329 * OFDM
1330 */
1331 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
1332 priv->staging_rxon.cck_basic_rates =
1333 ((priv->active_rate_basic &
1334 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
1335 else
1336 priv->staging_rxon.cck_basic_rates =
1337 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1338
1339 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
1340 priv->staging_rxon.ofdm_basic_rates =
1341 ((priv->active_rate_basic &
1342 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
1343 IWL_FIRST_OFDM_RATE) & 0xFF;
1344 else
1345 priv->staging_rxon.ofdm_basic_rates =
1346 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1347}
1348
ad97edd2 1349void iwl4965_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
b481de9c
ZY		 1350{
1351 unsigned long flags;
1352
1353 if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
1354 return;
1355
1356 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
1357 disable_radio ? "OFF" : "ON");
1358
1359 if (disable_radio) {
bb8c093b 1360 iwl4965_scan_cancel(priv);
b481de9c
ZY		 1361 /* FIXME: This is a workaround for AP */
1362 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
1363 spin_lock_irqsave(&priv->lock, flags);
3395f6e9 1364 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
b481de9c
ZY		 1365 CSR_UCODE_SW_BIT_RFKILL);
1366 spin_unlock_irqrestore(&priv->lock, flags);
ad97edd2 1367 /* call the host command only if no hw rf-kill set */
59003835
MA		 1368 if (!test_bit(STATUS_RF_KILL_HW, &priv->status) &&
1369 iwl_is_ready(priv))
ad97edd2
MA		 1370 iwl4965_send_card_state(priv,
1371 CARD_STATE_CMD_DISABLE,
1372 0);
b481de9c 1373 set_bit(STATUS_RF_KILL_SW, &priv->status);
ad97edd2
MA		 1374
1375 /* make sure mac80211 stop sending Tx frame */
1376 if (priv->mac80211_registered)
1377 ieee80211_stop_queues(priv->hw);
b481de9c
ZY		 1378 }
1379 return;
1380 }
1381
1382 spin_lock_irqsave(&priv->lock, flags);
3395f6e9 1383 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
b481de9c
ZY		 1384
1385 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1386 spin_unlock_irqrestore(&priv->lock, flags);
1387
1388 /* wake up ucode */
1389 msleep(10);
1390
1391 spin_lock_irqsave(&priv->lock, flags);
3395f6e9
TW		 1392 iwl_read32(priv, CSR_UCODE_DRV_GP1);
1393 if (!iwl_grab_nic_access(priv))
1394 iwl_release_nic_access(priv);
b481de9c
ZY		 1395 spin_unlock_irqrestore(&priv->lock, flags);
1396
1397 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
1398 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
1399 "disabled by HW switch\n");
1400 return;
1401 }
1402
1403 queue_work(priv->workqueue, &priv->restart);
1404 return;
1405}
1406
b481de9c
ZY		 1407#define IWL_PACKET_RETRY_TIME HZ
1408
c79dd5b5 1409int iwl4965_is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
b481de9c
ZY		 1410{
1411 u16 sc = le16_to_cpu(header->seq_ctrl);
1412 u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
1413 u16 frag = sc & IEEE80211_SCTL_FRAG;
1414 u16 *last_seq, *last_frag;
1415 unsigned long *last_time;
1416
1417 switch (priv->iw_mode) {
1418 case IEEE80211_IF_TYPE_IBSS:{
1419 struct list_head *p;
bb8c093b 1420 struct iwl4965_ibss_seq *entry = NULL;
b481de9c
ZY		 1421 u8 *mac = header->addr2;
1422 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
1423
1424 __list_for_each(p, &priv->ibss_mac_hash[index]) {
bb8c093b 1425 entry = list_entry(p, struct iwl4965_ibss_seq, list);
b481de9c
ZY		 1426 if (!compare_ether_addr(entry->mac, mac))
1427 break;
1428 }
1429 if (p == &priv->ibss_mac_hash[index]) {
1430 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
1431 if (!entry) {
bc434dd2 1432 IWL_ERROR("Cannot malloc new mac entry\n");
b481de9c
ZY		 1433 return 0;
1434 }
1435 memcpy(entry->mac, mac, ETH_ALEN);
1436 entry->seq_num = seq;
1437 entry->frag_num = frag;
1438 entry->packet_time = jiffies;
bc434dd2 1439 list_add(&entry->list, &priv->ibss_mac_hash[index]);
b481de9c
ZY		 1440 return 0;
1441 }
1442 last_seq = &entry->seq_num;
1443 last_frag = &entry->frag_num;
1444 last_time = &entry->packet_time;
1445 break;
1446 }
1447 case IEEE80211_IF_TYPE_STA:
1448 last_seq = &priv->last_seq_num;
1449 last_frag = &priv->last_frag_num;
1450 last_time = &priv->last_packet_time;
1451 break;
1452 default:
1453 return 0;
1454 }
1455 if ((*last_seq == seq) &&
1456 time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
1457 if (*last_frag == frag)
1458 goto drop;
1459 if (*last_frag + 1 != frag)
1460 /* out-of-order fragment */
1461 goto drop;
1462 } else
1463 *last_seq = seq;
1464
1465 *last_frag = frag;
1466 *last_time = jiffies;
1467 return 0;
1468
1469 drop:
1470 return 1;
1471}
1472
c8b0e6e1 1473#ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
b481de9c
ZY		 1474
1475#include "iwl-spectrum.h"
1476
1477#define BEACON_TIME_MASK_LOW 0x00FFFFFF
1478#define BEACON_TIME_MASK_HIGH 0xFF000000
1479#define TIME_UNIT 1024
1480
1481/*
1482 * extended beacon time format
1483 * time in usec will be changed into a 32-bit value in 8:24 format
1484 * the high 1 byte is the beacon counts
1485 * the lower 3 bytes is the time in usec within one beacon interval
1486 */
1487
bb8c093b 1488static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
b481de9c
ZY		 1489{
1490 u32 quot;
1491 u32 rem;
1492 u32 interval = beacon_interval * 1024;
1493
1494 if (!interval || !usec)
1495 return 0;
1496
1497 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
1498 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
1499
1500 return (quot << 24) + rem;
1501}
1502
1503/* base is usually what we get from ucode with each received frame,
1504 * the same as HW timer counter counting down
1505 */
1506
bb8c093b 1507static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
b481de9c
ZY		 1508{
1509 u32 base_low = base & BEACON_TIME_MASK_LOW;
1510 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
1511 u32 interval = beacon_interval * TIME_UNIT;
1512 u32 res = (base & BEACON_TIME_MASK_HIGH) +
1513 (addon & BEACON_TIME_MASK_HIGH);
1514
1515 if (base_low > addon_low)
1516 res += base_low - addon_low;
1517 else if (base_low < addon_low) {
1518 res += interval + base_low - addon_low;
1519 res += (1 << 24);
1520 } else
1521 res += (1 << 24);
1522
1523 return cpu_to_le32(res);
1524}
1525
c79dd5b5 1526static int iwl4965_get_measurement(struct iwl_priv *priv,
b481de9c
ZY		 1527 struct ieee80211_measurement_params *params,
1528 u8 type)
1529{
bb8c093b 1530 struct iwl4965_spectrum_cmd spectrum;
db11d634 1531 struct iwl_rx_packet *res;
857485c0 1532 struct iwl_host_cmd cmd = {
b481de9c
ZY		 1533 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
1534 .data = (void *)&spectrum,
1535 .meta.flags = CMD_WANT_SKB,
1536 };
1537 u32 add_time = le64_to_cpu(params->start_time);
1538 int rc;
1539 int spectrum_resp_status;
1540 int duration = le16_to_cpu(params->duration);
1541
3109ece1 1542 if (iwl_is_associated(priv))
b481de9c 1543 add_time =
bb8c093b 1544 iwl4965_usecs_to_beacons(
b481de9c
ZY		 1545 le64_to_cpu(params->start_time) - priv->last_tsf,
1546 le16_to_cpu(priv->rxon_timing.beacon_interval));
1547
1548 memset(&spectrum, 0, sizeof(spectrum));
1549
1550 spectrum.channel_count = cpu_to_le16(1);
1551 spectrum.flags =
1552 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
1553 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
1554 cmd.len = sizeof(spectrum);
1555 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
1556
3109ece1 1557 if (iwl_is_associated(priv))
b481de9c 1558 spectrum.start_time =
bb8c093b 1559 iwl4965_add_beacon_time(priv->last_beacon_time,
b481de9c
ZY		 1560 add_time,
1561 le16_to_cpu(priv->rxon_timing.beacon_interval));
1562 else
1563 spectrum.start_time = 0;
1564
1565 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
1566 spectrum.channels[0].channel = params->channel;
1567 spectrum.channels[0].type = type;
1568 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
1569 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
1570 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
1571
857485c0 1572 rc = iwl_send_cmd_sync(priv, &cmd);
b481de9c
ZY		 1573 if (rc)
1574 return rc;
1575
db11d634 1576 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
b481de9c
ZY		 1577 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1578 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
1579 rc = -EIO;
1580 }
1581
1582 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
1583 switch (spectrum_resp_status) {
1584 case 0: /* Command will be handled */
1585 if (res->u.spectrum.id != 0xff) {
1586 IWL_DEBUG_INFO
1587 ("Replaced existing measurement: %d\n",
1588 res->u.spectrum.id);
1589 priv->measurement_status &= ~MEASUREMENT_READY;
1590 }
1591 priv->measurement_status |= MEASUREMENT_ACTIVE;
1592 rc = 0;
1593 break;
1594
1595 case 1: /* Command will not be handled */
1596 rc = -EAGAIN;
1597 break;
1598 }
1599
1600 dev_kfree_skb_any(cmd.meta.u.skb);
1601
1602 return rc;
1603}
1604#endif
1605
c79dd5b5 1606static void iwl4965_txstatus_to_ieee(struct iwl_priv *priv,
8567c63e 1607 struct iwl_tx_info *tx_sta)
b481de9c 1608{
e039fa4a 1609 ieee80211_tx_status_irqsafe(priv->hw, tx_sta->skb[0]);
b481de9c
ZY		 1610 tx_sta->skb[0] = NULL;
1611}
1612
1613/**
6440adb5 1614 * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
b481de9c 1615 *
6440adb5
CB		 1616 * When FW advances 'R' index, all entries between old and new 'R' index
1617 * need to be reclaimed. As result, some free space forms. If there is
1618 * enough free space (> low mark), wake the stack that feeds us.
b481de9c 1619 */
c79dd5b5 1620int iwl4965_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
b481de9c 1621{
16466903 1622 struct iwl_tx_queue *txq = &priv->txq[txq_id];
443cfd45 1623 struct iwl_queue *q = &txq->q;
b481de9c
ZY		 1624 int nfreed = 0;
1625
443cfd45 1626 if ((index >= q->n_bd) || (iwl_queue_used(q, index) == 0)) {
b481de9c
ZY		 1627 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
1628 "is out of range [0-%d] %d %d.\n", txq_id,
fc4b6853 1629 index, q->n_bd, q->write_ptr, q->read_ptr);
b481de9c
ZY		 1630 return 0;
1631 }
1632
c54b679d 1633 for (index = iwl_queue_inc_wrap(index, q->n_bd);
fc4b6853 1634 q->read_ptr != index;
c54b679d 1635 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
b481de9c 1636 if (txq_id != IWL_CMD_QUEUE_NUM) {
bb8c093b 1637 iwl4965_txstatus_to_ieee(priv,
fc4b6853 1638 &(txq->txb[txq->q.read_ptr]));
1053d35f 1639 iwl_hw_txq_free_tfd(priv, txq);
b481de9c
ZY		 1640 } else if (nfreed > 1) {
1641 IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
fc4b6853 1642 q->write_ptr, q->read_ptr);
b481de9c
ZY		 1643 queue_work(priv->workqueue, &priv->restart);
1644 }
1645 nfreed++;
1646 }
1647
b481de9c
ZY		 1648 return nfreed;
1649}
1650
bb8c093b 1651static int iwl4965_is_tx_success(u32 status)
b481de9c
ZY		 1652{
1653 status &= TX_STATUS_MSK;
1654 return (status == TX_STATUS_SUCCESS)
1655 || (status == TX_STATUS_DIRECT_DONE);
1656}
1657
1658/******************************************************************************
1659 *
1660 * Generic RX handler implementations
1661 *
1662 ******************************************************************************/
c8b0e6e1 1663#ifdef CONFIG_IWL4965_HT
b481de9c 1664
c79dd5b5 1665static inline int iwl4965_get_ra_sta_id(struct iwl_priv *priv,
b481de9c
ZY		 1666 struct ieee80211_hdr *hdr)
1667{
1668 if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
1669 return IWL_AP_ID;
1670 else {
1671 u8 *da = ieee80211_get_DA(hdr);
947b13a7 1672 return iwl_find_station(priv, da);
b481de9c
ZY		 1673 }
1674}
1675
bb8c093b 1676static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
c79dd5b5 1677 struct iwl_priv *priv, int txq_id, int idx)
b481de9c
ZY		 1678{
1679 if (priv->txq[txq_id].txb[idx].skb[0])
1680 return (struct ieee80211_hdr *)priv->txq[txq_id].
1681 txb[idx].skb[0]->data;
1682 return NULL;
1683}
1684
bb8c093b 1685static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
b481de9c
ZY		 1686{
1687 __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
1688 tx_resp->frame_count);
1689 return le32_to_cpu(*scd_ssn) & MAX_SN;
1690
1691}
6440adb5
CB		 1692
1693/**
1694 * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
1695 */
c79dd5b5 1696static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv,
6def9761 1697 struct iwl_ht_agg *agg,
fe01b477 1698 struct iwl4965_tx_resp_agg *tx_resp,
b481de9c
ZY		 1699 u16 start_idx)
1700{
fe01b477
RR		 1701 u16 status;
1702 struct agg_tx_status *frame_status = &tx_resp->status;
e039fa4a 1703 struct ieee80211_tx_info *info = NULL;
b481de9c
ZY		 1704 struct ieee80211_hdr *hdr = NULL;
1705 int i, sh;
1706 int txq_id, idx;
1707 u16 seq;
1708
1709 if (agg->wait_for_ba)
6440adb5 1710 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
b481de9c
ZY		 1711
1712 agg->frame_count = tx_resp->frame_count;
1713 agg->start_idx = start_idx;
1714 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
fe01b477 1715 agg->bitmap = 0;
b481de9c 1716
6440adb5 1717 /* # frames attempted by Tx command */
b481de9c 1718 if (agg->frame_count == 1) {
6440adb5 1719 /* Only one frame was attempted; no block-ack will arrive */
fe01b477
RR		 1720 status = le16_to_cpu(frame_status[0].status);
1721 seq = le16_to_cpu(frame_status[0].sequence);
1722 idx = SEQ_TO_INDEX(seq);
1723 txq_id = SEQ_TO_QUEUE(seq);
b481de9c 1724
b481de9c 1725 /* FIXME: code repetition */
fe01b477
RR		 1726 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n",
1727 agg->frame_count, agg->start_idx, idx);
b481de9c 1728
e039fa4a
JB		 1729 info = IEEE80211_SKB_CB(priv->txq[txq_id].txb[idx].skb[0]);
1730 info->status.retry_count = tx_resp->failure_frame;
1731 info->flags &= ~IEEE80211_TX_CTL_AMPDU;
1732 info->flags |= iwl4965_is_tx_success(status)?
1733 IEEE80211_TX_STAT_ACK : 0;
4c424e4c
RR		 1734 iwl4965_hwrate_to_tx_control(priv,
1735 le32_to_cpu(tx_resp->rate_n_flags),
e039fa4a 1736 info);
b481de9c
ZY		 1737 /* FIXME: code repetition end */
1738
1739 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
1740 status & 0xff, tx_resp->failure_frame);
1741 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
bb8c093b 1742 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
b481de9c
ZY		 1743
1744 agg->wait_for_ba = 0;
1745 } else {
6440adb5 1746 /* Two or more frames were attempted; expect block-ack */
b481de9c
ZY		 1747 u64 bitmap = 0;
1748 int start = agg->start_idx;
1749
6440adb5 1750 /* Construct bit-map of pending frames within Tx window */
b481de9c
ZY		 1751 for (i = 0; i < agg->frame_count; i++) {
1752 u16 sc;
fe01b477
RR		 1753 status = le16_to_cpu(frame_status[i].status);
1754 seq = le16_to_cpu(frame_status[i].sequence);
b481de9c
ZY		 1755 idx = SEQ_TO_INDEX(seq);
1756 txq_id = SEQ_TO_QUEUE(seq);
1757
1758 if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
1759 AGG_TX_STATE_ABORT_MSK))
1760 continue;
1761
1762 IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
1763 agg->frame_count, txq_id, idx);
1764
bb8c093b 1765 hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
b481de9c
ZY		 1766
1767 sc = le16_to_cpu(hdr->seq_ctrl);
1768 if (idx != (SEQ_TO_SN(sc) & 0xff)) {
1769 IWL_ERROR("BUG_ON idx doesn't match seq control"
1770 " idx=%d, seq_idx=%d, seq=%d\n",
1771 idx, SEQ_TO_SN(sc),
1772 hdr->seq_ctrl);
1773 return -1;
1774 }
1775
1776 IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
1777 i, idx, SEQ_TO_SN(sc));
1778
1779 sh = idx - start;
1780 if (sh > 64) {
1781 sh = (start - idx) + 0xff;
1782 bitmap = bitmap << sh;
1783 sh = 0;
1784 start = idx;
1785 } else if (sh < -64)
1786 sh = 0xff - (start - idx);
1787 else if (sh < 0) {
1788 sh = start - idx;
1789 start = idx;
1790 bitmap = bitmap << sh;
1791 sh = 0;
1792 }
1793 bitmap |= (1 << sh);
1794 IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
1795 start, (u32)(bitmap & 0xFFFFFFFF));
1796 }
1797
fe01b477 1798 agg->bitmap = bitmap;
b481de9c
ZY		 1799 agg->start_idx = start;
1800 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
fe01b477 1801 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n",
b481de9c 1802 agg->frame_count, agg->start_idx,
06501d29 1803 (unsigned long long)agg->bitmap);
b481de9c
ZY		 1804
1805 if (bitmap)
1806 agg->wait_for_ba = 1;
1807 }
1808 return 0;
1809}
1810#endif
b481de9c 1811
6440adb5
CB		 1812/**
1813 * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
1814 */
c79dd5b5 1815static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
a55360e4 1816 struct iwl_rx_mem_buffer *rxb)
b481de9c 1817{
db11d634 1818 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
b481de9c
ZY		 1819 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
1820 int txq_id = SEQ_TO_QUEUE(sequence);
1821 int index = SEQ_TO_INDEX(sequence);
16466903 1822 struct iwl_tx_queue *txq = &priv->txq[txq_id];
e039fa4a 1823 struct ieee80211_tx_info *info;
bb8c093b 1824 struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
b481de9c 1825 u32 status = le32_to_cpu(tx_resp->status);
c8b0e6e1 1826#ifdef CONFIG_IWL4965_HT
fe01b477 1827 int tid = MAX_TID_COUNT, sta_id = IWL_INVALID_STATION;
54dbb525 1828 u16 fc;
fe01b477 1829 struct ieee80211_hdr *hdr;
54dbb525 1830 u8 *qc = NULL;
b481de9c
ZY		 1831#endif
1832
443cfd45 1833 if ((index >= txq->q.n_bd) || (iwl_queue_used(&txq->q, index) == 0)) {
b481de9c
ZY		 1834 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
1835 "is out of range [0-%d] %d %d\n", txq_id,
fc4b6853
TW		 1836 index, txq->q.n_bd, txq->q.write_ptr,
1837 txq->q.read_ptr);
b481de9c
ZY		 1838 return;
1839 }
1840
e039fa4a
JB		 1841 info = IEEE80211_SKB_CB(txq->txb[txq->q.read_ptr].skb[0]);
1842 memset(&info->status, 0, sizeof(info->status));
1843
c8b0e6e1 1844#ifdef CONFIG_IWL4965_HT
fe01b477 1845 hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, index);
54dbb525
TW		 1846 fc = le16_to_cpu(hdr->frame_control);
1847 if (ieee80211_is_qos_data(fc)) {
1848 qc = ieee80211_get_qos_ctrl(hdr, ieee80211_get_hdrlen(fc));
1849 tid = qc[0] & 0xf;
1850 }
fe01b477
RR		 1851
1852 sta_id = iwl4965_get_ra_sta_id(priv, hdr);
1853 if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
1854 IWL_ERROR("Station not known\n");
1855 return;
1856 }
1857
b481de9c 1858 if (txq->sched_retry) {
bb8c093b 1859 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
6def9761 1860 struct iwl_ht_agg *agg = NULL;
b481de9c 1861
fe01b477 1862 if (!qc)
b481de9c 1863 return;
b481de9c
ZY		 1864
1865 agg = &priv->stations[sta_id].tid[tid].agg;
1866
fe01b477
RR		 1867 iwl4965_tx_status_reply_tx(priv, agg,
1868 (struct iwl4965_tx_resp_agg *)tx_resp, index);
b481de9c
ZY		 1869
1870 if ((tx_resp->frame_count == 1) &&
bb8c093b 1871 !iwl4965_is_tx_success(status)) {
b481de9c
ZY		 1872 /* TODO: send BAR */
1873 }
1874
fe01b477 1875 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
0d0b2c1c 1876 int freed, ampdu_q;
c54b679d 1877 index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
b481de9c
ZY		 1878 IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
1879 "%d index %d\n", scd_ssn , index);
fe01b477
RR		 1880 freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
1881 priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
1882
443cfd45 1883 if (iwl_queue_space(&txq->q) > txq->q.low_mark &&
fe01b477 1884 txq_id >= 0 && priv->mac80211_registered &&
0d0b2c1c
RR		 1885 agg->state != IWL_EMPTYING_HW_QUEUE_DELBA) {
1886 /* calculate mac80211 ampdu sw queue to wake */
1887 ampdu_q = txq_id - IWL_BACK_QUEUE_FIRST_ID +
1888 priv->hw->queues;
1889 if (agg->state == IWL_AGG_OFF)
1890 ieee80211_wake_queue(priv->hw, txq_id);
1891 else
1892 ieee80211_wake_queue(priv->hw, ampdu_q);
1893 }
fe01b477 1894 iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
b481de9c
ZY		 1895 }
1896 } else {
c8b0e6e1 1897#endif /* CONFIG_IWL4965_HT */
b481de9c 1898
e039fa4a
JB		 1899 info->status.retry_count = tx_resp->failure_frame;
1900 info->flags |=
1901 iwl4965_is_tx_success(status) ? IEEE80211_TX_STAT_ACK : 0;
4c424e4c 1902 iwl4965_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags),
e039fa4a 1903 info);
b481de9c 1904
b481de9c 1905 IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
bb8c093b 1906 "retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
b481de9c
ZY		 1907 status, le32_to_cpu(tx_resp->rate_n_flags),
1908 tx_resp->failure_frame);
1909
1910 IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
47c5196e 1911#ifdef CONFIG_IWL4965_HT
fe01b477
RR		 1912 if (index != -1) {
1913 int freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
fe01b477
RR		 1914 if (tid != MAX_TID_COUNT)
1915 priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
443cfd45 1916 if (iwl_queue_space(&txq->q) > txq->q.low_mark &&
0d0b2c1c 1917 (txq_id >= 0) && priv->mac80211_registered)
fe01b477
RR		 1918 ieee80211_wake_queue(priv->hw, txq_id);
1919 if (tid != MAX_TID_COUNT)
1920 iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
fe01b477 1921 }
b481de9c 1922 }
c8b0e6e1 1923#endif /* CONFIG_IWL4965_HT */
b481de9c
ZY		 1924
1925 if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
1926 IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n");
1927}
1928
1929
885ba202
TW		 1930static void iwl_rx_reply_alive(struct iwl_priv *priv,
1931 struct iwl_rx_mem_buffer *rxb)
b481de9c 1932{
db11d634 1933 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
885ba202 1934 struct iwl_alive_resp *palive;
b481de9c
ZY		 1935 struct delayed_work *pwork;
1936
1937 palive = &pkt->u.alive_frame;
1938
1939 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1940 "0x%01X 0x%01X\n",
1941 palive->is_valid, palive->ver_type,
1942 palive->ver_subtype);
1943
1944 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1945 IWL_DEBUG_INFO("Initialization Alive received.\n");
1946 memcpy(&priv->card_alive_init,
1947 &pkt->u.alive_frame,
885ba202 1948 sizeof(struct iwl_init_alive_resp));
b481de9c
ZY		 1949 pwork = &priv->init_alive_start;
1950 } else {
1951 IWL_DEBUG_INFO("Runtime Alive received.\n");
1952 memcpy(&priv->card_alive, &pkt->u.alive_frame,
885ba202 1953 sizeof(struct iwl_alive_resp));
b481de9c
ZY		 1954 pwork = &priv->alive_start;
1955 }
1956
1957 /* We delay the ALIVE response by 5ms to
1958 * give the HW RF Kill time to activate... */
1959 if (palive->is_valid == UCODE_VALID_OK)
1960 queue_delayed_work(priv->workqueue, pwork,
1961 msecs_to_jiffies(5));
1962 else
1963 IWL_WARNING("uCode did not respond OK.\n");
1964}
1965
c79dd5b5 1966static void iwl4965_rx_reply_add_sta(struct iwl_priv *priv,
a55360e4 1967 struct iwl_rx_mem_buffer *rxb)
b481de9c 1968{
db11d634 1969 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
b481de9c
ZY		 1970
1971 IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
1972 return;
1973}
1974
c79dd5b5 1975static void iwl4965_rx_reply_error(struct iwl_priv *priv,
a55360e4 1976 struct iwl_rx_mem_buffer *rxb)
b481de9c 1977{
db11d634 1978 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
b481de9c
ZY		 1979
1980 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1981 "seq 0x%04X ser 0x%08X\n",
1982 le32_to_cpu(pkt->u.err_resp.error_type),
1983 get_cmd_string(pkt->u.err_resp.cmd_id),
1984 pkt->u.err_resp.cmd_id,
1985 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1986 le32_to_cpu(pkt->u.err_resp.error_info));
1987}
1988
1989#define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1990
a55360e4 1991static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
b481de9c 1992{
db11d634 1993 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
c1adf9fb 1994 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
bb8c093b 1995 struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
b481de9c
ZY		 1996 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1997 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1998 rxon->channel = csa->channel;
1999 priv->staging_rxon.channel = csa->channel;
2000}
2001
c79dd5b5 2002static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
a55360e4 2003 struct iwl_rx_mem_buffer *rxb)
b481de9c 2004{
c8b0e6e1 2005#ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
db11d634 2006 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
bb8c093b 2007 struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
b481de9c
ZY		 2008
2009 if (!report->state) {
f3d67999
EK		 2010 IWL_DEBUG(IWL_DL_11H,
2011 "Spectrum Measure Notification: Start\n");
b481de9c
ZY		 2012 return;
2013 }
2014
2015 memcpy(&priv->measure_report, report, sizeof(*report));
2016 priv->measurement_status |= MEASUREMENT_READY;
2017#endif
2018}
2019
c79dd5b5 2020static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
a55360e4 2021 struct iwl_rx_mem_buffer *rxb)
b481de9c 2022{
0a6857e7 2023#ifdef CONFIG_IWLWIFI_DEBUG
db11d634 2024 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
bb8c093b 2025 struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
b481de9c
ZY		 2026 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
2027 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
2028#endif
2029}
2030
c79dd5b5 2031static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
a55360e4 2032 struct iwl_rx_mem_buffer *rxb)
b481de9c 2033{
db11d634 2034 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
b481de9c
ZY		 2035 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
2036 "notification for %s:\n",
2037 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
bf403db8 2038 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
b481de9c
ZY		 2039}
2040
bb8c093b 2041static void iwl4965_bg_beacon_update(struct work_struct *work)
b481de9c 2042{
c79dd5b5
TW		 2043 struct iwl_priv *priv =
2044 container_of(work, struct iwl_priv, beacon_update);
b481de9c
ZY		 2045 struct sk_buff *beacon;
2046
2047 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
e039fa4a 2048 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
b481de9c
ZY		 2049
2050 if (!beacon) {
2051 IWL_ERROR("update beacon failed\n");
2052 return;
2053 }
2054
2055 mutex_lock(&priv->mutex);
2056 /* new beacon skb is allocated every time; dispose previous.*/
2057 if (priv->ibss_beacon)
2058 dev_kfree_skb(priv->ibss_beacon);
2059
2060 priv->ibss_beacon = beacon;
2061 mutex_unlock(&priv->mutex);
2062
bb8c093b 2063 iwl4965_send_beacon_cmd(priv);
b481de9c
ZY		 2064}
2065
c79dd5b5 2066static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
a55360e4 2067 struct iwl_rx_mem_buffer *rxb)
b481de9c 2068{
0a6857e7 2069#ifdef CONFIG_IWLWIFI_DEBUG
db11d634 2070 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
bb8c093b
CH		 2071 struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
2072 u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
b481de9c
ZY		 2073
2074 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
2075 "tsf %d %d rate %d\n",
2076 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
2077 beacon->beacon_notify_hdr.failure_frame,
2078 le32_to_cpu(beacon->ibss_mgr_status),
2079 le32_to_cpu(beacon->high_tsf),
2080 le32_to_cpu(beacon->low_tsf), rate);
2081#endif
2082
2083 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
2084 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
2085 queue_work(priv->workqueue, &priv->beacon_update);
2086}
2087
2088/* Service response to REPLY_SCAN_CMD (0x80) */
c79dd5b5 2089static void iwl4965_rx_reply_scan(struct iwl_priv *priv,
a55360e4 2090 struct iwl_rx_mem_buffer *rxb)
b481de9c 2091{
0a6857e7 2092#ifdef CONFIG_IWLWIFI_DEBUG
db11d634 2093 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
bb8c093b
CH		 2094 struct iwl4965_scanreq_notification *notif =
2095 (struct iwl4965_scanreq_notification *)pkt->u.raw;
b481de9c
ZY		 2096
2097 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
2098#endif
2099}
2100
2101/* Service SCAN_START_NOTIFICATION (0x82) */
c79dd5b5 2102static void iwl4965_rx_scan_start_notif(struct iwl_priv *priv,
a55360e4 2103 struct iwl_rx_mem_buffer *rxb)
b481de9c 2104{
db11d634 2105 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
bb8c093b
CH		 2106 struct iwl4965_scanstart_notification *notif =
2107 (struct iwl4965_scanstart_notification *)pkt->u.raw;
b481de9c
ZY		 2108 priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
2109 IWL_DEBUG_SCAN("Scan start: "
2110 "%d [802.11%s] "
2111 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
2112 notif->channel,
2113 notif->band ? "bg" : "a",
2114 notif->tsf_high,
2115 notif->tsf_low, notif->status, notif->beacon_timer);
2116}
2117
2118/* Service SCAN_RESULTS_NOTIFICATION (0x83) */
c79dd5b5 2119static void iwl4965_rx_scan_results_notif(struct iwl_priv *priv,
a55360e4 2120 struct iwl_rx_mem_buffer *rxb)
b481de9c 2121{
db11d634 2122 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
bb8c093b
CH		 2123 struct iwl4965_scanresults_notification *notif =
2124 (struct iwl4965_scanresults_notification *)pkt->u.raw;
b481de9c
ZY		 2125
2126 IWL_DEBUG_SCAN("Scan ch.res: "
2127 "%d [802.11%s] "
2128 "(TSF: 0x%08X:%08X) - %d "
2129 "elapsed=%lu usec (%dms since last)\n",
2130 notif->channel,
2131 notif->band ? "bg" : "a",
2132 le32_to_cpu(notif->tsf_high),
2133 le32_to_cpu(notif->tsf_low),
2134 le32_to_cpu(notif->statistics[0]),
2135 le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
2136 jiffies_to_msecs(elapsed_jiffies
2137 (priv->last_scan_jiffies, jiffies)));
2138
2139 priv->last_scan_jiffies = jiffies;
7878a5a4 2140 priv->next_scan_jiffies = 0;
b481de9c
ZY		 2141}
2142
2143/* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
c79dd5b5 2144static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv,
a55360e4 2145 struct iwl_rx_mem_buffer *rxb)
b481de9c 2146{
db11d634 2147 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
bb8c093b 2148 struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
b481de9c
ZY		 2149
2150 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
2151 scan_notif->scanned_channels,
2152 scan_notif->tsf_low,
2153 scan_notif->tsf_high, scan_notif->status);
2154
2155 /* The HW is no longer scanning */
2156 clear_bit(STATUS_SCAN_HW, &priv->status);
2157
2158 /* The scan completion notification came in, so kill that timer... */
2159 cancel_delayed_work(&priv->scan_check);
2160
2161 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
2162 (priv->scan_bands == 2) ? "2.4" : "5.2",
2163 jiffies_to_msecs(elapsed_jiffies
2164 (priv->scan_pass_start, jiffies)));
2165
2166 /* Remove this scanned band from the list
2167 * of pending bands to scan */
2168 priv->scan_bands--;
2169
2170 /* If a request to abort was given, or the scan did not succeed
2171 * then we reset the scan state machine and terminate,
2172 * re-queuing another scan if one has been requested */
2173 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2174 IWL_DEBUG_INFO("Aborted scan completed.\n");
2175 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
2176 } else {
2177 /* If there are more bands on this scan pass reschedule */
2178 if (priv->scan_bands > 0)
2179 goto reschedule;
2180 }
2181
2182 priv->last_scan_jiffies = jiffies;
7878a5a4 2183 priv->next_scan_jiffies = 0;
b481de9c
ZY		 2184 IWL_DEBUG_INFO("Setting scan to off\n");
2185
2186 clear_bit(STATUS_SCANNING, &priv->status);
2187
2188 IWL_DEBUG_INFO("Scan took %dms\n",
2189 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
2190
2191 queue_work(priv->workqueue, &priv->scan_completed);
2192
2193 return;
2194
2195reschedule:
2196 priv->scan_pass_start = jiffies;
2197 queue_work(priv->workqueue, &priv->request_scan);
2198}
2199
2200/* Handle notification from uCode that card's power state is changing
2201 * due to software, hardware, or critical temperature RFKILL */
c79dd5b5 2202static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
a55360e4 2203 struct iwl_rx_mem_buffer *rxb)
b481de9c 2204{
db11d634 2205 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
b481de9c
ZY		 2206 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
2207 unsigned long status = priv->status;
2208
2209 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
2210 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
2211 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
2212
2213 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
2214 RF_CARD_DISABLED)) {
2215
3395f6e9 2216 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
b481de9c
ZY		 2217 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2218
3395f6e9
TW		 2219 if (!iwl_grab_nic_access(priv)) {
2220 iwl_write_direct32(
b481de9c
ZY		 2221 priv, HBUS_TARG_MBX_C,
2222 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
2223
3395f6e9 2224 iwl_release_nic_access(priv);
b481de9c
ZY		 2225 }
2226
2227 if (!(flags & RXON_CARD_DISABLED)) {
3395f6e9 2228 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
b481de9c 2229 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3395f6e9
TW		 2230 if (!iwl_grab_nic_access(priv)) {
2231 iwl_write_direct32(
b481de9c
ZY		 2232 priv, HBUS_TARG_MBX_C,
2233 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
2234
3395f6e9 2235 iwl_release_nic_access(priv);
b481de9c
ZY		 2236 }
2237 }
2238
2239 if (flags & RF_CARD_DISABLED) {
3395f6e9 2240 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
b481de9c 2241 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
3395f6e9
TW		 2242 iwl_read32(priv, CSR_UCODE_DRV_GP1);
2243 if (!iwl_grab_nic_access(priv))
2244 iwl_release_nic_access(priv);
b481de9c
ZY		 2245 }
2246 }
2247
2248 if (flags & HW_CARD_DISABLED)
2249 set_bit(STATUS_RF_KILL_HW, &priv->status);
2250 else
2251 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2252
2253
2254 if (flags & SW_CARD_DISABLED)
2255 set_bit(STATUS_RF_KILL_SW, &priv->status);
2256 else
2257 clear_bit(STATUS_RF_KILL_SW, &priv->status);
2258
2259 if (!(flags & RXON_CARD_DISABLED))
bb8c093b 2260 iwl4965_scan_cancel(priv);
b481de9c
ZY		 2261
2262 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
2263 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
2264 (test_bit(STATUS_RF_KILL_SW, &status) !=
2265 test_bit(STATUS_RF_KILL_SW, &priv->status)))
2266 queue_work(priv->workqueue, &priv->rf_kill);
2267 else
2268 wake_up_interruptible(&priv->wait_command_queue);
2269}
2270
2271/**
bb8c093b 2272 * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
b481de9c
ZY		 2273 *
2274 * Setup the RX handlers for each of the reply types sent from the uCode
2275 * to the host.
2276 *
2277 * This function chains into the hardware specific files for them to setup
2278 * any hardware specific handlers as well.
2279 */
c79dd5b5 2280static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
b481de9c 2281{
885ba202 2282 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
bb8c093b
CH		 2283 priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta;
2284 priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
2285 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
b481de9c 2286 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
bb8c093b
CH		 2287 iwl4965_rx_spectrum_measure_notif;
2288 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
b481de9c 2289 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
bb8c093b
CH		 2290 iwl4965_rx_pm_debug_statistics_notif;
2291 priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
b481de9c 2292
9fbab516
BC		 2293 /*
2294 * The same handler is used for both the REPLY to a discrete
2295 * statistics request from the host as well as for the periodic
2296 * statistics notifications (after received beacons) from the uCode.
b481de9c 2297 */
bb8c093b
CH		 2298 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
2299 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
b481de9c 2300
bb8c093b
CH		 2301 priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
2302 priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
b481de9c 2303 priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
bb8c093b 2304 iwl4965_rx_scan_results_notif;
b481de9c 2305 priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
bb8c093b
CH		 2306 iwl4965_rx_scan_complete_notif;
2307 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
2308 priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
b481de9c 2309
9fbab516 2310 /* Set up hardware specific Rx handlers */
d4789efe 2311 priv->cfg->ops->lib->rx_handler_setup(priv);
b481de9c
ZY		 2312}
2313
2314/**
bb8c093b 2315 * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
b481de9c
ZY		 2316 * @rxb: Rx buffer to reclaim
2317 *
2318 * If an Rx buffer has an async callback associated with it the callback
2319 * will be executed. The attached skb (if present) will only be freed
2320 * if the callback returns 1
2321 */
c79dd5b5 2322static void iwl4965_tx_cmd_complete(struct iwl_priv *priv,
a55360e4 2323 struct iwl_rx_mem_buffer *rxb)
b481de9c 2324{
db11d634 2325 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
b481de9c
ZY		 2326 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
2327 int txq_id = SEQ_TO_QUEUE(sequence);
2328 int index = SEQ_TO_INDEX(sequence);
2329 int huge = sequence & SEQ_HUGE_FRAME;
2330 int cmd_index;
857485c0 2331 struct iwl_cmd *cmd;
b481de9c
ZY		 2332
2333 /* If a Tx command is being handled and it isn't in the actual
2334 * command queue then there a command routing bug has been introduced
2335 * in the queue management code. */
2336 if (txq_id != IWL_CMD_QUEUE_NUM)
2337 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
2338 txq_id, pkt->hdr.cmd);
2339 BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
2340
2341 cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
2342 cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
2343
2344 /* Input error checking is done when commands are added to queue. */
2345 if (cmd->meta.flags & CMD_WANT_SKB) {
2346 cmd->meta.source->u.skb = rxb->skb;
2347 rxb->skb = NULL;
2348 } else if (cmd->meta.u.callback &&
2349 !cmd->meta.u.callback(priv, cmd, rxb->skb))
2350 rxb->skb = NULL;
2351
bb8c093b 2352 iwl4965_tx_queue_reclaim(priv, txq_id, index);
b481de9c
ZY		 2353
2354 if (!(cmd->meta.flags & CMD_ASYNC)) {
2355 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
2356 wake_up_interruptible(&priv->wait_command_queue);
2357 }
2358}
2359
5c0eef96
MA		 2360/*
2361 * this should be called while priv->lock is locked
2362*/
a55360e4 2363static void __iwl_rx_replenish(struct iwl_priv *priv)
b481de9c 2364{
a55360e4
TW		 2365 iwl_rx_allocate(priv);
2366 iwl_rx_queue_restock(priv);
b481de9c
ZY		 2367}
2368
b481de9c
ZY		 2369
2370/**
a55360e4 2371 * iwl_rx_handle - Main entry function for receiving responses from uCode
b481de9c
ZY		 2372 *
2373 * Uses the priv->rx_handlers callback function array to invoke
2374 * the appropriate handlers, including command responses,
2375 * frame-received notifications, and other notifications.
2376 */
a55360e4 2377void iwl_rx_handle(struct iwl_priv *priv)
b481de9c 2378{
a55360e4 2379 struct iwl_rx_mem_buffer *rxb;
db11d634 2380 struct iwl_rx_packet *pkt;
a55360e4 2381 struct iwl_rx_queue *rxq = &priv->rxq;
b481de9c
ZY		 2382 u32 r, i;
2383 int reclaim;
2384 unsigned long flags;
5c0eef96 2385 u8 fill_rx = 0;
d68ab680 2386 u32 count = 8;
b481de9c 2387
6440adb5
CB		 2388 /* uCode's read index (stored in shared DRAM) indicates the last Rx
2389 * buffer that the driver may process (last buffer filled by ucode). */
d67f5489 2390 r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
b481de9c
ZY		 2391 i = rxq->read;
2392
2393 /* Rx interrupt, but nothing sent from uCode */
2394 if (i == r)
f3d67999 2395 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
b481de9c 2396
a55360e4 2397 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
5c0eef96
MA		 2398 fill_rx = 1;
2399
b481de9c
ZY		 2400 while (i != r) {
2401 rxb = rxq->queue[i];
2402
9fbab516 2403 /* If an RXB doesn't have a Rx queue slot associated with it,
b481de9c
ZY		 2404 * then a bug has been introduced in the queue refilling
2405 * routines -- catch it here */
2406 BUG_ON(rxb == NULL);
2407
2408 rxq->queue[i] = NULL;
2409
2410 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
5425e490 2411 priv->hw_params.rx_buf_size,
b481de9c 2412 PCI_DMA_FROMDEVICE);
db11d634 2413 pkt = (struct iwl_rx_packet *)rxb->skb->data;
b481de9c
ZY		 2414
2415 /* Reclaim a command buffer only if this packet is a response
2416 * to a (driver-originated) command.
2417 * If the packet (e.g. Rx frame) originated from uCode,
2418 * there is no command buffer to reclaim.
2419 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
2420 * but apparently a few don't get set; catch them here. */
2421 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
2422 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
857485c0 2423 (pkt->hdr.cmd != REPLY_RX) &&
cfe01709 2424 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
b481de9c
ZY		 2425 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
2426 (pkt->hdr.cmd != REPLY_TX);
2427
2428 /* Based on type of command response or notification,
2429 * handle those that need handling via function in
bb8c093b 2430 * rx_handlers table. See iwl4965_setup_rx_handlers() */
b481de9c 2431 if (priv->rx_handlers[pkt->hdr.cmd]) {
f3d67999
EK		 2432 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
2433 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
b481de9c
ZY		 2434 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
2435 } else {
2436 /* No handling needed */
f3d67999 2437 IWL_DEBUG(IWL_DL_RX,
b481de9c
ZY		 2438 "r %d i %d No handler needed for %s, 0x%02x\n",
2439 r, i, get_cmd_string(pkt->hdr.cmd),
2440 pkt->hdr.cmd);
2441 }
2442
2443 if (reclaim) {
9fbab516 2444 /* Invoke any callbacks, transfer the skb to caller, and
857485c0 2445 * fire off the (possibly) blocking iwl_send_cmd()
b481de9c
ZY		 2446 * as we reclaim the driver command queue */
2447 if (rxb && rxb->skb)
bb8c093b 2448 iwl4965_tx_cmd_complete(priv, rxb);
b481de9c
ZY		 2449 else
2450 IWL_WARNING("Claim null rxb?\n");
2451 }
2452
2453 /* For now we just don't re-use anything. We can tweak this
2454 * later to try and re-use notification packets and SKBs that
2455 * fail to Rx correctly */
2456 if (rxb->skb != NULL) {
2457 priv->alloc_rxb_skb--;
2458 dev_kfree_skb_any(rxb->skb);
2459 rxb->skb = NULL;
2460 }
2461
2462 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
5425e490 2463 priv->hw_params.rx_buf_size,
9ee1ba47 2464 PCI_DMA_FROMDEVICE);
b481de9c
ZY		 2465 spin_lock_irqsave(&rxq->lock, flags);
2466 list_add_tail(&rxb->list, &priv->rxq.rx_used);
2467 spin_unlock_irqrestore(&rxq->lock, flags);
2468 i = (i + 1) & RX_QUEUE_MASK;
5c0eef96
MA		 2469 /* If there are a lot of unused frames,
2470 * restock the Rx queue so ucode wont assert. */
2471 if (fill_rx) {
2472 count++;
2473 if (count >= 8) {
2474 priv->rxq.read = i;
a55360e4 2475 __iwl_rx_replenish(priv);
5c0eef96
MA		 2476 count = 0;
2477 }
2478 }
b481de9c
ZY		 2479 }
2480
2481 /* Backtrack one entry */
2482 priv->rxq.read = i;
a55360e4
TW		 2483 iwl_rx_queue_restock(priv);
2484}
2485/* Convert linear signal-to-noise ratio into dB */
2486static u8 ratio2dB[100] = {
2487/* 0 1 2 3 4 5 6 7 8 9 */
2488 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
2489 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
2490 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
2491 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
2492 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
2493 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
2494 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
2495 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
2496 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
2497 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
2498};
2499
2500/* Calculates a relative dB value from a ratio of linear
2501 * (i.e. not dB) signal levels.
2502 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
2503int iwl4965_calc_db_from_ratio(int sig_ratio)
2504{
2505 /* 1000:1 or higher just report as 60 dB */
2506 if (sig_ratio >= 1000)
2507 return 60;
2508
2509 /* 100:1 or higher, divide by 10 and use table,
2510 * add 20 dB to make up for divide by 10 */
2511 if (sig_ratio >= 100)
2512 return (20 + (int)ratio2dB[sig_ratio/10]);
2513
2514 /* We shouldn't see this */
2515 if (sig_ratio < 1)
2516 return 0;
2517
2518 /* Use table for ratios 1:1 - 99:1 */
2519 return (int)ratio2dB[sig_ratio];
2520}
2521
2522#define PERFECT_RSSI (-20) /* dBm */
2523#define WORST_RSSI (-95) /* dBm */
2524#define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
2525
2526/* Calculate an indication of rx signal quality (a percentage, not dBm!).
2527 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
2528 * about formulas used below. */
2529int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
2530{
2531 int sig_qual;
2532 int degradation = PERFECT_RSSI - rssi_dbm;
2533
2534 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
2535 * as indicator; formula is (signal dbm - noise dbm).
2536 * SNR at or above 40 is a great signal (100%).
2537 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
2538 * Weakest usable signal is usually 10 - 15 dB SNR. */
2539 if (noise_dbm) {
2540 if (rssi_dbm - noise_dbm >= 40)
2541 return 100;
2542 else if (rssi_dbm < noise_dbm)
2543 return 0;
2544 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
2545
2546 /* Else use just the signal level.
2547 * This formula is a least squares fit of data points collected and
2548 * compared with a reference system that had a percentage (%) display
2549 * for signal quality. */
2550 } else
2551 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
2552 (15 * RSSI_RANGE + 62 * degradation)) /
2553 (RSSI_RANGE * RSSI_RANGE);
2554
2555 if (sig_qual > 100)
2556 sig_qual = 100;
2557 else if (sig_qual < 1)
2558 sig_qual = 0;
2559
2560 return sig_qual;
b481de9c
ZY		 2561}
2562
0a6857e7 2563#ifdef CONFIG_IWLWIFI_DEBUG
bf403db8 2564static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
b481de9c 2565{
c1adf9fb 2566 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
0795af57
JP		 2567 DECLARE_MAC_BUF(mac);
2568
b481de9c 2569 IWL_DEBUG_RADIO("RX CONFIG:\n");
bf403db8 2570 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
b481de9c
ZY		 2571 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
2572 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
2573 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
2574 le32_to_cpu(rxon->filter_flags));
2575 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
2576 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
2577 rxon->ofdm_basic_rates);
2578 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
0795af57
JP		 2579 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
2580 print_mac(mac, rxon->node_addr));
2581 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
2582 print_mac(mac, rxon->bssid_addr));
b481de9c
ZY		 2583 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
2584}
2585#endif
2586
c79dd5b5 2587static void iwl4965_enable_interrupts(struct iwl_priv *priv)
b481de9c
ZY		 2588{
2589 IWL_DEBUG_ISR("Enabling interrupts\n");
2590 set_bit(STATUS_INT_ENABLED, &priv->status);
3395f6e9 2591 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
b481de9c
ZY		 2592}
2593
0359facc
MA		 2594/* call this function to flush any scheduled tasklet */
2595static inline void iwl_synchronize_irq(struct iwl_priv *priv)
2596{
2597 /* wait to make sure we flush pedding tasklet*/
2598 synchronize_irq(priv->pci_dev->irq);
2599 tasklet_kill(&priv->irq_tasklet);
2600}
2601
c79dd5b5 2602static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
b481de9c
ZY		 2603{
2604 clear_bit(STATUS_INT_ENABLED, &priv->status);
2605
2606 /* disable interrupts from uCode/NIC to host */
3395f6e9 2607 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
b481de9c
ZY		 2608
2609 /* acknowledge/clear/reset any interrupts still pending
2610 * from uCode or flow handler (Rx/Tx DMA) */
3395f6e9
TW		 2611 iwl_write32(priv, CSR_INT, 0xffffffff);
2612 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
b481de9c
ZY		 2613 IWL_DEBUG_ISR("Disabled interrupts\n");
2614}
2615
b481de9c 2616
b481de9c 2617/**
bb8c093b 2618 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
b481de9c 2619 */
c79dd5b5 2620static void iwl4965_irq_handle_error(struct iwl_priv *priv)
b481de9c 2621{
bb8c093b 2622 /* Set the FW error flag -- cleared on iwl4965_down */
b481de9c
ZY		 2623 set_bit(STATUS_FW_ERROR, &priv->status);
2624
2625 /* Cancel currently queued command. */
2626 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
2627
0a6857e7 2628#ifdef CONFIG_IWLWIFI_DEBUG
bf403db8 2629 if (priv->debug_level & IWL_DL_FW_ERRORS) {
ede0cba4 2630 iwl_dump_nic_error_log(priv);
189a2b59 2631 iwl_dump_nic_event_log(priv);
bf403db8 2632 iwl4965_print_rx_config_cmd(priv);
b481de9c
ZY		 2633 }
2634#endif
2635
2636 wake_up_interruptible(&priv->wait_command_queue);
2637
2638 /* Keep the restart process from trying to send host
2639 * commands by clearing the INIT status bit */
2640 clear_bit(STATUS_READY, &priv->status);
2641
2642 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
f3d67999 2643 IWL_DEBUG(IWL_DL_FW_ERRORS,
b481de9c
ZY		 2644 "Restarting adapter due to uCode error.\n");
2645
3109ece1 2646 if (iwl_is_associated(priv)) {
b481de9c
ZY		 2647 memcpy(&priv->recovery_rxon, &priv->active_rxon,
2648 sizeof(priv->recovery_rxon));
2649 priv->error_recovering = 1;
2650 }
3a1081e8
EK		 2651 if (priv->cfg->mod_params->restart_fw)
2652 queue_work(priv->workqueue, &priv->restart);
b481de9c
ZY		 2653 }
2654}
2655
c79dd5b5 2656static void iwl4965_error_recovery(struct iwl_priv *priv)
b481de9c
ZY		 2657{
2658 unsigned long flags;
2659
2660 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
2661 sizeof(priv->staging_rxon));
2662 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
bb8c093b 2663 iwl4965_commit_rxon(priv);
b481de9c 2664
4f40e4d9 2665 iwl_rxon_add_station(priv, priv->bssid, 1);
b481de9c
ZY		 2666
2667 spin_lock_irqsave(&priv->lock, flags);
2668 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
2669 priv->error_recovering = 0;
2670 spin_unlock_irqrestore(&priv->lock, flags);
2671}
2672
c79dd5b5 2673static void iwl4965_irq_tasklet(struct iwl_priv *priv)
b481de9c
ZY		 2674{
2675 u32 inta, handled = 0;
2676 u32 inta_fh;
2677 unsigned long flags;
0a6857e7 2678#ifdef CONFIG_IWLWIFI_DEBUG
b481de9c
ZY		 2679 u32 inta_mask;
2680#endif
2681
2682 spin_lock_irqsave(&priv->lock, flags);
2683
2684 /* Ack/clear/reset pending uCode interrupts.
2685 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
2686 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
3395f6e9
TW		 2687 inta = iwl_read32(priv, CSR_INT);
2688 iwl_write32(priv, CSR_INT, inta);
b481de9c
ZY		 2689
2690 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
2691 * Any new interrupts that happen after this, either while we're
2692 * in this tasklet, or later, will show up in next ISR/tasklet. */
3395f6e9
TW		 2693 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2694 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
b481de9c 2695
0a6857e7 2696#ifdef CONFIG_IWLWIFI_DEBUG
bf403db8 2697 if (priv->debug_level & IWL_DL_ISR) {
9fbab516 2698 /* just for debug */
3395f6e9 2699 inta_mask = iwl_read32(priv, CSR_INT_MASK);
b481de9c
ZY		 2700 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2701 inta, inta_mask, inta_fh);
2702 }
2703#endif
2704
2705 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
2706 * atomic, make sure that inta covers all the interrupts that
2707 * we've discovered, even if FH interrupt came in just after
2708 * reading CSR_INT. */
6f83eaa1 2709 if (inta_fh & CSR49_FH_INT_RX_MASK)
b481de9c 2710 inta |= CSR_INT_BIT_FH_RX;
6f83eaa1 2711 if (inta_fh & CSR49_FH_INT_TX_MASK)
b481de9c
ZY		 2712 inta |= CSR_INT_BIT_FH_TX;
2713
2714 /* Now service all interrupt bits discovered above. */
2715 if (inta & CSR_INT_BIT_HW_ERR) {
2716 IWL_ERROR("Microcode HW error detected. Restarting.\n");
2717
2718 /* Tell the device to stop sending interrupts */
bb8c093b 2719 iwl4965_disable_interrupts(priv);
b481de9c 2720
bb8c093b 2721 iwl4965_irq_handle_error(priv);
b481de9c
ZY		 2722
2723 handled |= CSR_INT_BIT_HW_ERR;
2724
2725 spin_unlock_irqrestore(&priv->lock, flags);
2726
2727 return;
2728 }
2729
0a6857e7 2730#ifdef CONFIG_IWLWIFI_DEBUG
bf403db8 2731 if (priv->debug_level & (IWL_DL_ISR)) {
b481de9c 2732 /* NIC fires this, but we don't use it, redundant with WAKEUP */
25c03d8e
JP		 2733 if (inta & CSR_INT_BIT_SCD)
2734 IWL_DEBUG_ISR("Scheduler finished to transmit "
2735 "the frame/frames.\n");
b481de9c
ZY		 2736
2737 /* Alive notification via Rx interrupt will do the real work */
2738 if (inta & CSR_INT_BIT_ALIVE)
2739 IWL_DEBUG_ISR("Alive interrupt\n");
2740 }
2741#endif
2742 /* Safely ignore these bits for debug checks below */
25c03d8e 2743 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
b481de9c 2744
9fbab516 2745 /* HW RF KILL switch toggled */
b481de9c
ZY		 2746 if (inta & CSR_INT_BIT_RF_KILL) {
2747 int hw_rf_kill = 0;
3395f6e9 2748 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
b481de9c
ZY		 2749 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
2750 hw_rf_kill = 1;
2751
f3d67999 2752 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
b481de9c
ZY		 2753 hw_rf_kill ? "disable radio":"enable radio");
2754
2755 /* Queue restart only if RF_KILL switch was set to "kill"
2756 * when we loaded driver, and is now set to "enable".
2757 * After we're Alive, RF_KILL gets handled by
3230455d 2758 * iwl4965_rx_card_state_notif() */
53e49093
ZY		 2759 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
2760 clear_bit(STATUS_RF_KILL_HW, &priv->status);
b481de9c 2761 queue_work(priv->workqueue, &priv->restart);
53e49093 2762 }
b481de9c
ZY		 2763
2764 handled |= CSR_INT_BIT_RF_KILL;
2765 }
2766
9fbab516 2767 /* Chip got too hot and stopped itself */
b481de9c
ZY		 2768 if (inta & CSR_INT_BIT_CT_KILL) {
2769 IWL_ERROR("Microcode CT kill error detected.\n");
2770 handled |= CSR_INT_BIT_CT_KILL;
2771 }
2772
2773 /* Error detected by uCode */
2774 if (inta & CSR_INT_BIT_SW_ERR) {
2775 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
2776 inta);
bb8c093b 2777 iwl4965_irq_handle_error(priv);
b481de9c
ZY		 2778 handled |= CSR_INT_BIT_SW_ERR;
2779 }
2780
2781 /* uCode wakes up after power-down sleep */
2782 if (inta & CSR_INT_BIT_WAKEUP) {
2783 IWL_DEBUG_ISR("Wakeup interrupt\n");
a55360e4 2784 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
babcebfa
TW		 2785 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
2786 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
2787 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
2788 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
2789 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
2790 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
b481de9c
ZY		 2791
2792 handled |= CSR_INT_BIT_WAKEUP;
2793 }
2794
2795 /* All uCode command responses, including Tx command responses,
2796 * Rx "responses" (frame-received notification), and other
2797 * notifications from uCode come through here*/
2798 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
a55360e4 2799 iwl_rx_handle(priv);
b481de9c
ZY		 2800 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
2801 }
2802
2803 if (inta & CSR_INT_BIT_FH_TX) {
2804 IWL_DEBUG_ISR("Tx interrupt\n");
2805 handled |= CSR_INT_BIT_FH_TX;
dbb983b7
RR		 2806 /* FH finished to write, send event */
2807 priv->ucode_write_complete = 1;
2808 wake_up_interruptible(&priv->wait_command_queue);
b481de9c
ZY		 2809 }
2810
2811 if (inta & ~handled)
2812 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
2813
2814 if (inta & ~CSR_INI_SET_MASK) {
2815 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
2816 inta & ~CSR_INI_SET_MASK);
2817 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
2818 }
2819
2820 /* Re-enable all interrupts */
0359facc
MA		 2821 /* only Re-enable if diabled by irq */
2822 if (test_bit(STATUS_INT_ENABLED, &priv->status))
2823 iwl4965_enable_interrupts(priv);
b481de9c 2824
0a6857e7 2825#ifdef CONFIG_IWLWIFI_DEBUG
bf403db8 2826 if (priv->debug_level & (IWL_DL_ISR)) {
3395f6e9
TW		 2827 inta = iwl_read32(priv, CSR_INT);
2828 inta_mask = iwl_read32(priv, CSR_INT_MASK);
2829 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
b481de9c
ZY		 2830 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
2831 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
2832 }
2833#endif
2834 spin_unlock_irqrestore(&priv->lock, flags);
2835}
2836
bb8c093b 2837static irqreturn_t iwl4965_isr(int irq, void *data)
b481de9c 2838{
c79dd5b5 2839 struct iwl_priv *priv = data;
b481de9c
ZY		 2840 u32 inta, inta_mask;
2841 u32 inta_fh;
2842 if (!priv)
2843 return IRQ_NONE;
2844
2845 spin_lock(&priv->lock);
2846
2847 /* Disable (but don't clear!) interrupts here to avoid
2848 * back-to-back ISRs and sporadic interrupts from our NIC.
2849 * If we have something to service, the tasklet will re-enable ints.
2850 * If we *don't* have something, we'll re-enable before leaving here. */
3395f6e9
TW		 2851 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
2852 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
b481de9c
ZY		 2853
2854 /* Discover which interrupts are active/pending */
3395f6e9
TW		 2855 inta = iwl_read32(priv, CSR_INT);
2856 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
b481de9c
ZY		 2857
2858 /* Ignore interrupt if there's nothing in NIC to service.
2859 * This may be due to IRQ shared with another device,
2860 * or due to sporadic interrupts thrown from our NIC. */
2861 if (!inta && !inta_fh) {
2862 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
2863 goto none;
2864 }
2865
2866 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
66fbb541
ON		 2867 /* Hardware disappeared. It might have already raised
2868 * an interrupt */
b481de9c 2869 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
66fbb541 2870 goto unplugged;
b481de9c
ZY		 2871 }
2872
2873 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2874 inta, inta_mask, inta_fh);
2875
25c03d8e
JP		 2876 inta &= ~CSR_INT_BIT_SCD;
2877
bb8c093b 2878 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
25c03d8e
JP		 2879 if (likely(inta || inta_fh))
2880 tasklet_schedule(&priv->irq_tasklet);
b481de9c 2881
66fbb541
ON		 2882 unplugged:
2883 spin_unlock(&priv->lock);
b481de9c
ZY		 2884 return IRQ_HANDLED;
2885
2886 none:
2887 /* re-enable interrupts here since we don't have anything to service. */
0359facc
MA		 2888 /* only Re-enable if diabled by irq */
2889 if (test_bit(STATUS_INT_ENABLED, &priv->status))
2890 iwl4965_enable_interrupts(priv);
b481de9c
ZY		 2891 spin_unlock(&priv->lock);
2892 return IRQ_NONE;
2893}
2894
b481de9c
ZY		 2895/* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
2896 * sending probe req. This should be set long enough to hear probe responses
2897 * from more than one AP. */
2898#define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
2899#define IWL_ACTIVE_DWELL_TIME_52 (10)
2900
2901/* For faster active scanning, scan will move to the next channel if fewer than
2902 * PLCP_QUIET_THRESH packets are heard on this channel within
2903 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
2904 * time if it's a quiet channel (nothing responded to our probe, and there's
2905 * no other traffic).
2906 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
2907#define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
2908#define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
2909
2910/* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
2911 * Must be set longer than active dwell time.
2912 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
2913#define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
2914#define IWL_PASSIVE_DWELL_TIME_52 (10)
2915#define IWL_PASSIVE_DWELL_BASE (100)
2916#define IWL_CHANNEL_TUNE_TIME 5
2917
c79dd5b5 2918static inline u16 iwl4965_get_active_dwell_time(struct iwl_priv *priv,
8318d78a 2919 enum ieee80211_band band)
b481de9c 2920{
8318d78a 2921 if (band == IEEE80211_BAND_5GHZ)
b481de9c
ZY		 2922 return IWL_ACTIVE_DWELL_TIME_52;
2923 else
2924 return IWL_ACTIVE_DWELL_TIME_24;
2925}
2926
c79dd5b5 2927static u16 iwl4965_get_passive_dwell_time(struct iwl_priv *priv,
8318d78a 2928 enum ieee80211_band band)
b481de9c 2929{
8318d78a
JB		 2930 u16 active = iwl4965_get_active_dwell_time(priv, band);
2931 u16 passive = (band != IEEE80211_BAND_5GHZ) ?
b481de9c
ZY		 2932 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
2933 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
2934
3109ece1 2935 if (iwl_is_associated(priv)) {
b481de9c
ZY		 2936 /* If we're associated, we clamp the maximum passive
2937 * dwell time to be 98% of the beacon interval (minus
2938 * 2 * channel tune time) */
2939 passive = priv->beacon_int;
2940 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
2941 passive = IWL_PASSIVE_DWELL_BASE;
2942 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
2943 }
2944
2945 if (passive <= active)
2946 passive = active + 1;
2947
2948 return passive;
2949}
2950
c79dd5b5 2951static int iwl4965_get_channels_for_scan(struct iwl_priv *priv,
8318d78a 2952 enum ieee80211_band band,
b481de9c 2953 u8 is_active, u8 direct_mask,
bb8c093b 2954 struct iwl4965_scan_channel *scan_ch)
b481de9c
ZY		 2955{
2956 const struct ieee80211_channel *channels = NULL;
8318d78a 2957 const struct ieee80211_supported_band *sband;
bf85ea4f 2958 const struct iwl_channel_info *ch_info;
b481de9c
ZY		 2959 u16 passive_dwell = 0;
2960 u16 active_dwell = 0;
2961 int added, i;
2962
d1141dfb 2963 sband = iwl_get_hw_mode(priv, band);
8318d78a 2964 if (!sband)
b481de9c
ZY		 2965 return 0;
2966
8318d78a 2967 channels = sband->channels;
b481de9c 2968
8318d78a
JB		 2969 active_dwell = iwl4965_get_active_dwell_time(priv, band);
2970 passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
b481de9c 2971
8318d78a 2972 for (i = 0, added = 0; i < sband->n_channels; i++) {
182e2e66
JB		 2973 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
2974 continue;
2975
8318d78a 2976 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
b481de9c 2977
8622e705 2978 ch_info = iwl_get_channel_info(priv, band,
9fbab516 2979 scan_ch->channel);
b481de9c
ZY		 2980 if (!is_channel_valid(ch_info)) {
2981 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
2982 scan_ch->channel);
2983 continue;
2984 }
2985
2986 if (!is_active || is_channel_passive(ch_info) ||
8318d78a 2987 (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
b481de9c
ZY		 2988 scan_ch->type = 0; /* passive */
2989 else
2990 scan_ch->type = 1; /* active */
2991
2992 if (scan_ch->type & 1)
2993 scan_ch->type |= (direct_mask << 1);
2994
b481de9c
ZY		 2995 scan_ch->active_dwell = cpu_to_le16(active_dwell);
2996 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
2997
9fbab516 2998 /* Set txpower levels to defaults */
b481de9c
ZY		 2999 scan_ch->tpc.dsp_atten = 110;
3000 /* scan_pwr_info->tpc.dsp_atten; */
3001
3002 /*scan_pwr_info->tpc.tx_gain; */
8318d78a 3003 if (band == IEEE80211_BAND_5GHZ)
b481de9c
ZY		 3004 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
3005 else {
3006 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
3007 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
9fbab516 3008 * power level:
8a1b0245 3009 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
b481de9c
ZY		 3010 */
3011 }
3012
3013 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
3014 scan_ch->channel,
3015 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
3016 (scan_ch->type & 1) ?
3017 active_dwell : passive_dwell);
3018
3019 scan_ch++;
3020 added++;
3021 }
3022
3023 IWL_DEBUG_SCAN("total channels to scan %d \n", added);
3024 return added;
3025}
3026
b481de9c
ZY		 3027/******************************************************************************
3028 *
3029 * uCode download functions
3030 *
3031 ******************************************************************************/
3032
c79dd5b5 3033static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
b481de9c 3034{
98c92211
TW		 3035 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
3036 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
3037 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
3038 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
3039 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
3040 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
b481de9c
ZY		 3041}
3042
edcdf8b2
RR		 3043static void iwl4965_nic_start(struct iwl_priv *priv)
3044{
3045 /* Remove all resets to allow NIC to operate */
3046 iwl_write32(priv, CSR_RESET, 0);
3047}
3048
3049
b481de9c 3050/**
bb8c093b 3051 * iwl4965_read_ucode - Read uCode images from disk file.
b481de9c
ZY		 3052 *
3053 * Copy into buffers for card to fetch via bus-mastering
3054 */
c79dd5b5 3055static int iwl4965_read_ucode(struct iwl_priv *priv)
b481de9c 3056{
bb8c093b 3057 struct iwl4965_ucode *ucode;
90e759d1 3058 int ret;
b481de9c 3059 const struct firmware *ucode_raw;
4bf775cd 3060 const char *name = priv->cfg->fw_name;
b481de9c
ZY		 3061 u8 *src;
3062 size_t len;
3063 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
3064
3065 /* Ask kernel firmware_class module to get the boot firmware off disk.
3066 * request_firmware() is synchronous, file is in memory on return. */
90e759d1
TW		 3067 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
3068 if (ret < 0) {
3069 IWL_ERROR("%s firmware file req failed: Reason %d\n",
3070 name, ret);
b481de9c
ZY		 3071 goto error;
3072 }
3073
3074 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
3075 name, ucode_raw->size);
3076
3077 /* Make sure that we got at least our header! */
3078 if (ucode_raw->size < sizeof(*ucode)) {
3079 IWL_ERROR("File size way too small!\n");
90e759d1 3080 ret = -EINVAL;
b481de9c
ZY		 3081 goto err_release;
3082 }
3083
3084 /* Data from ucode file: header followed by uCode images */
3085 ucode = (void *)ucode_raw->data;
3086
3087 ver = le32_to_cpu(ucode->ver);
3088 inst_size = le32_to_cpu(ucode->inst_size);
3089 data_size = le32_to_cpu(ucode->data_size);
3090 init_size = le32_to_cpu(ucode->init_size);
3091 init_data_size = le32_to_cpu(ucode->init_data_size);
3092 boot_size = le32_to_cpu(ucode->boot_size);
3093
3094 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
3095 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
3096 inst_size);
3097 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
3098 data_size);
3099 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
3100 init_size);
3101 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
3102 init_data_size);
3103 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
3104 boot_size);
3105
3106 /* Verify size of file vs. image size info in file's header */
3107 if (ucode_raw->size < sizeof(*ucode) +
3108 inst_size + data_size + init_size +
3109 init_data_size + boot_size) {
3110
3111 IWL_DEBUG_INFO("uCode file size %d too small\n",
3112 (int)ucode_raw->size);
90e759d1 3113 ret = -EINVAL;
b481de9c
ZY		 3114 goto err_release;
3115 }
3116
3117 /* Verify that uCode images will fit in card's SRAM */
099b40b7 3118 if (inst_size > priv->hw_params.max_inst_size) {
90e759d1
TW		 3119 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
3120 inst_size);
3121 ret = -EINVAL;
b481de9c
ZY		 3122 goto err_release;
3123 }
3124
099b40b7 3125 if (data_size > priv->hw_params.max_data_size) {
90e759d1
TW		 3126 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
3127 data_size);
3128 ret = -EINVAL;
b481de9c
ZY		 3129 goto err_release;
3130 }
099b40b7 3131 if (init_size > priv->hw_params.max_inst_size) {
b481de9c 3132 IWL_DEBUG_INFO
90e759d1
TW		 3133 ("uCode init instr len %d too large to fit in\n",
3134 init_size);
3135 ret = -EINVAL;
b481de9c
ZY		 3136 goto err_release;
3137 }
099b40b7 3138 if (init_data_size > priv->hw_params.max_data_size) {
b481de9c 3139 IWL_DEBUG_INFO
90e759d1
TW		 3140 ("uCode init data len %d too large to fit in\n",
3141 init_data_size);
3142 ret = -EINVAL;
b481de9c
ZY		 3143 goto err_release;
3144 }
099b40b7 3145 if (boot_size > priv->hw_params.max_bsm_size) {
b481de9c 3146 IWL_DEBUG_INFO
90e759d1
TW		 3147 ("uCode boot instr len %d too large to fit in\n",
3148 boot_size);
3149 ret = -EINVAL;
b481de9c
ZY		 3150 goto err_release;
3151 }
3152
3153 /* Allocate ucode buffers for card's bus-master loading ... */
3154
3155 /* Runtime instructions and 2 copies of data:
3156 * 1) unmodified from disk
3157 * 2) backup cache for save/restore during power-downs */
3158 priv->ucode_code.len = inst_size;
98c92211 3159 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
b481de9c
ZY		 3160
3161 priv->ucode_data.len = data_size;
98c92211 3162 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
b481de9c
ZY		 3163
3164 priv->ucode_data_backup.len = data_size;
98c92211 3165 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
b481de9c
ZY		 3166
3167 /* Initialization instructions and data */
90e759d1
TW		 3168 if (init_size && init_data_size) {
3169 priv->ucode_init.len = init_size;
98c92211 3170 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
90e759d1
TW		 3171
3172 priv->ucode_init_data.len = init_data_size;
98c92211 3173 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
90e759d1
TW		 3174
3175 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
3176 goto err_pci_alloc;
3177 }
b481de9c
ZY		 3178
3179 /* Bootstrap (instructions only, no data) */
90e759d1
TW		 3180 if (boot_size) {
3181 priv->ucode_boot.len = boot_size;
98c92211 3182 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
b481de9c 3183
90e759d1
TW		 3184 if (!priv->ucode_boot.v_addr)
3185 goto err_pci_alloc;
3186 }
b481de9c
ZY		 3187
3188 /* Copy images into buffers for card's bus-master reads ... */
3189
3190 /* Runtime instructions (first block of data in file) */
3191 src = &ucode->data[0];
3192 len = priv->ucode_code.len;
90e759d1 3193 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
b481de9c
ZY		 3194 memcpy(priv->ucode_code.v_addr, src, len);
3195 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
3196 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
3197
3198 /* Runtime data (2nd block)
bb8c093b 3199 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
b481de9c
ZY		 3200 src = &ucode->data[inst_size];
3201 len = priv->ucode_data.len;
90e759d1 3202 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
b481de9c
ZY		 3203 memcpy(priv->ucode_data.v_addr, src, len);
3204 memcpy(priv->ucode_data_backup.v_addr, src, len);
3205
3206 /* Initialization instructions (3rd block) */
3207 if (init_size) {
3208 src = &ucode->data[inst_size + data_size];
3209 len = priv->ucode_init.len;
90e759d1
TW		 3210 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
3211 len);
b481de9c
ZY		 3212 memcpy(priv->ucode_init.v_addr, src, len);
3213 }
3214
3215 /* Initialization data (4th block) */
3216 if (init_data_size) {
3217 src = &ucode->data[inst_size + data_size + init_size];
3218 len = priv->ucode_init_data.len;
90e759d1
TW		 3219 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
3220 len);
b481de9c
ZY		 3221 memcpy(priv->ucode_init_data.v_addr, src, len);
3222 }
3223
3224 /* Bootstrap instructions (5th block) */
3225 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
3226 len = priv->ucode_boot.len;
90e759d1 3227 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
b481de9c
ZY		 3228 memcpy(priv->ucode_boot.v_addr, src, len);
3229
3230 /* We have our copies now, allow OS release its copies */
3231 release_firmware(ucode_raw);
3232 return 0;
3233
3234 err_pci_alloc:
3235 IWL_ERROR("failed to allocate pci memory\n");
90e759d1 3236 ret = -ENOMEM;
bb8c093b 3237 iwl4965_dealloc_ucode_pci(priv);
b481de9c
ZY		 3238
3239 err_release:
3240 release_firmware(ucode_raw);
3241
3242 error:
90e759d1 3243 return ret;
b481de9c
ZY		 3244}
3245
b481de9c 3246/**
4a4a9e81 3247 * iwl_alive_start - called after REPLY_ALIVE notification received
b481de9c 3248 * from protocol/runtime uCode (initialization uCode's
4a4a9e81 3249 * Alive gets handled by iwl_init_alive_start()).
b481de9c 3250 */
4a4a9e81 3251static void iwl_alive_start(struct iwl_priv *priv)
b481de9c 3252{
57aab75a 3253 int ret = 0;
b481de9c
ZY		 3254
3255 IWL_DEBUG_INFO("Runtime Alive received.\n");
3256
3257 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
3258 /* We had an error bringing up the hardware, so take it
3259 * all the way back down so we can try again */
3260 IWL_DEBUG_INFO("Alive failed.\n");
3261 goto restart;
3262 }
3263
3264 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
3265 * This is a paranoid check, because we would not have gotten the
3266 * "runtime" alive if code weren't properly loaded. */
b0692f2f 3267 if (iwl_verify_ucode(priv)) {
b481de9c
ZY		 3268 /* Runtime instruction load was bad;
3269 * take it all the way back down so we can try again */
3270 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
3271 goto restart;
3272 }
3273
bf85ea4f 3274 iwlcore_clear_stations_table(priv);
57aab75a
TW		 3275 ret = priv->cfg->ops->lib->alive_notify(priv);
3276 if (ret) {
b481de9c 3277 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
57aab75a 3278 ret);
b481de9c
ZY		 3279 goto restart;
3280 }
3281
9fbab516 3282 /* After the ALIVE response, we can send host commands to 4965 uCode */
b481de9c
ZY		 3283 set_bit(STATUS_ALIVE, &priv->status);
3284
3285 /* Clear out the uCode error bit if it is set */
3286 clear_bit(STATUS_FW_ERROR, &priv->status);
3287
fee1247a 3288 if (iwl_is_rfkill(priv))
b481de9c
ZY		 3289 return;
3290
36d6825b 3291 ieee80211_wake_queues(priv->hw);
b481de9c
ZY		 3292
3293 priv->active_rate = priv->rates_mask;
3294 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
3295
3109ece1 3296 if (iwl_is_associated(priv)) {
c1adf9fb
GG		 3297 struct iwl_rxon_cmd *active_rxon =
3298 (struct iwl_rxon_cmd *)&priv->active_rxon;
b481de9c
ZY		 3299
3300 memcpy(&priv->staging_rxon, &priv->active_rxon,
3301 sizeof(priv->staging_rxon));
3302 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3303 } else {
3304 /* Initialize our rx_config data */
bb8c093b 3305 iwl4965_connection_init_rx_config(priv);
b481de9c
ZY		 3306 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
3307 }
3308
9fbab516 3309 /* Configure Bluetooth device coexistence support */
bb8c093b 3310 iwl4965_send_bt_config(priv);
b481de9c 3311
4a4a9e81
TW		 3312 iwl_reset_run_time_calib(priv);
3313
b481de9c 3314 /* Configure the adapter for unassociated operation */
bb8c093b 3315 iwl4965_commit_rxon(priv);
b481de9c
ZY		 3316
3317 /* At this point, the NIC is initialized and operational */
b481de9c 3318 iwl4965_rf_kill_ct_config(priv);
5a66926a 3319
fe00b5a5
RC		 3320 iwl_leds_register(priv);
3321
b481de9c 3322 IWL_DEBUG_INFO("ALIVE processing complete.\n");
a9f46786 3323 set_bit(STATUS_READY, &priv->status);
5a66926a 3324 wake_up_interruptible(&priv->wait_command_queue);
b481de9c
ZY		 3325
3326 if (priv->error_recovering)
bb8c093b 3327 iwl4965_error_recovery(priv);
b481de9c 3328
c8381fdc 3329 iwlcore_low_level_notify(priv, IWLCORE_START_EVT);
84363e6e 3330 ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
b481de9c
ZY		 3331 return;
3332
3333 restart:
3334 queue_work(priv->workqueue, &priv->restart);
3335}
3336
c79dd5b5 3337static void iwl4965_cancel_deferred_work(struct iwl_priv *priv);
b481de9c 3338
c79dd5b5 3339static void __iwl4965_down(struct iwl_priv *priv)
b481de9c
ZY		 3340{
3341 unsigned long flags;
3342 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
b481de9c
ZY		 3343
3344 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
3345
b481de9c
ZY		 3346 if (!exit_pending)
3347 set_bit(STATUS_EXIT_PENDING, &priv->status);
3348
ab53d8af
MA		 3349 iwl_leds_unregister(priv);
3350
c8381fdc
MA		 3351 iwlcore_low_level_notify(priv, IWLCORE_STOP_EVT);
3352
bf85ea4f 3353 iwlcore_clear_stations_table(priv);
b481de9c
ZY		 3354
3355 /* Unblock any waiting calls */
3356 wake_up_interruptible_all(&priv->wait_command_queue);
3357
b481de9c
ZY		 3358 /* Wipe out the EXIT_PENDING status bit if we are not actually
3359 * exiting the module */
3360 if (!exit_pending)
3361 clear_bit(STATUS_EXIT_PENDING, &priv->status);
3362
3363 /* stop and reset the on-board processor */
3395f6e9 3364 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
b481de9c
ZY		 3365
3366 /* tell the device to stop sending interrupts */
0359facc 3367 spin_lock_irqsave(&priv->lock, flags);
bb8c093b 3368 iwl4965_disable_interrupts(priv);
0359facc
MA		 3369 spin_unlock_irqrestore(&priv->lock, flags);
3370 iwl_synchronize_irq(priv);
b481de9c
ZY		 3371
3372 if (priv->mac80211_registered)
3373 ieee80211_stop_queues(priv->hw);
3374
bb8c093b 3375 /* If we have not previously called iwl4965_init() then
b481de9c 3376 * clear all bits but the RF Kill and SUSPEND bits and return */
fee1247a 3377 if (!iwl_is_init(priv)) {
b481de9c
ZY		 3378 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
3379 STATUS_RF_KILL_HW |
3380 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
3381 STATUS_RF_KILL_SW |
9788864e
RC		 3382 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
3383 STATUS_GEO_CONFIGURED |
b481de9c
ZY		 3384 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
3385 STATUS_IN_SUSPEND;
3386 goto exit;
3387 }
3388
3389 /* ...otherwise clear out all the status bits but the RF Kill and
3390 * SUSPEND bits and continue taking the NIC down. */
3391 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
3392 STATUS_RF_KILL_HW |
3393 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
3394 STATUS_RF_KILL_SW |
9788864e
RC		 3395 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
3396 STATUS_GEO_CONFIGURED |
b481de9c
ZY		 3397 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
3398 STATUS_IN_SUSPEND |
3399 test_bit(STATUS_FW_ERROR, &priv->status) <<
3400 STATUS_FW_ERROR;
3401
3402 spin_lock_irqsave(&priv->lock, flags);
3395f6e9 3403 iwl_clear_bit(priv, CSR_GP_CNTRL,
9fbab516 3404 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
b481de9c
ZY		 3405 spin_unlock_irqrestore(&priv->lock, flags);
3406
bb8c093b
CH		 3407 iwl4965_hw_txq_ctx_stop(priv);
3408 iwl4965_hw_rxq_stop(priv);
b481de9c
ZY		 3409
3410 spin_lock_irqsave(&priv->lock, flags);
3395f6e9
TW		 3411 if (!iwl_grab_nic_access(priv)) {
3412 iwl_write_prph(priv, APMG_CLK_DIS_REG,
b481de9c 3413 APMG_CLK_VAL_DMA_CLK_RQT);
3395f6e9 3414 iwl_release_nic_access(priv);
b481de9c
ZY		 3415 }
3416 spin_unlock_irqrestore(&priv->lock, flags);
3417
3418 udelay(5);
3419
bb8c093b 3420 iwl4965_hw_nic_stop_master(priv);
3395f6e9 3421 iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
bb8c093b 3422 iwl4965_hw_nic_reset(priv);
399f4900 3423 priv->cfg->ops->lib->free_shared_mem(priv);
b481de9c
ZY		 3424
3425 exit:
885ba202 3426 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
b481de9c
ZY		 3427
3428 if (priv->ibss_beacon)
3429 dev_kfree_skb(priv->ibss_beacon);
3430 priv->ibss_beacon = NULL;
3431
3432 /* clear out any free frames */
fcab423d 3433 iwl_clear_free_frames(priv);
b481de9c
ZY		 3434}
3435
c79dd5b5 3436static void iwl4965_down(struct iwl_priv *priv)
b481de9c
ZY		 3437{
3438 mutex_lock(&priv->mutex);
bb8c093b 3439 __iwl4965_down(priv);
b481de9c 3440 mutex_unlock(&priv->mutex);
b24d22b1 3441
bb8c093b 3442 iwl4965_cancel_deferred_work(priv);
b481de9c
ZY		 3443}
3444
3445#define MAX_HW_RESTARTS 5
3446
c79dd5b5 3447static int __iwl4965_up(struct iwl_priv *priv)
b481de9c 3448{
57aab75a
TW		 3449 int i;
3450 int ret;
b481de9c
ZY		 3451
3452 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3453 IWL_WARNING("Exit pending; will not bring the NIC up\n");
3454 return -EIO;
3455 }
3456
3457 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
3458 IWL_WARNING("Radio disabled by SW RF kill (module "
3459 "parameter)\n");
ad97edd2 3460 iwl_rfkill_set_hw_state(priv);
e655b9f0
ZY		 3461 return -ENODEV;
3462 }
3463
e903fbd4
RC		 3464 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
3465 IWL_ERROR("ucode not available for device bringup\n");
3466 return -EIO;
3467 }
3468
e655b9f0 3469 /* If platform's RF_KILL switch is NOT set to KILL */
3395f6e9 3470 if (iwl_read32(priv, CSR_GP_CNTRL) &
e655b9f0
ZY		 3471 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3472 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3473 else {
3474 set_bit(STATUS_RF_KILL_HW, &priv->status);
3475 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
ad97edd2 3476 iwl_rfkill_set_hw_state(priv);
e655b9f0
ZY		 3477 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
3478 return -ENODEV;
3479 }
b481de9c
ZY		 3480 }
3481
ad97edd2 3482 iwl_rfkill_set_hw_state(priv);
3395f6e9 3483 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
b481de9c 3484
399f4900
RR		 3485 ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
3486 if (ret) {
3487 IWL_ERROR("Unable to allocate shared memory\n");
3488 return ret;
3489 }
3490
1053d35f 3491 ret = iwl_hw_nic_init(priv);
57aab75a
TW		 3492 if (ret) {
3493 IWL_ERROR("Unable to init nic\n");
3494 return ret;
b481de9c
ZY		 3495 }
3496
3497 /* make sure rfkill handshake bits are cleared */
3395f6e9
TW		 3498 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3499 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
b481de9c
ZY		 3500 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3501
3502 /* clear (again), then enable host interrupts */
3395f6e9 3503 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
bb8c093b 3504 iwl4965_enable_interrupts(priv);
b481de9c
ZY		 3505
3506 /* really make sure rfkill handshake bits are cleared */
3395f6e9
TW		 3507 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3508 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
b481de9c
ZY		 3509
3510 /* Copy original ucode data image from disk into backup cache.
3511 * This will be used to initialize the on-board processor's
3512 * data SRAM for a clean start when the runtime program first loads. */
3513 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
5a66926a 3514 priv->ucode_data.len);
b481de9c 3515
e655b9f0
ZY		 3516 /* We return success when we resume from suspend and rf_kill is on. */
3517 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
b481de9c 3518 return 0;
b481de9c
ZY		 3519
3520 for (i = 0; i < MAX_HW_RESTARTS; i++) {
3521
bf85ea4f 3522 iwlcore_clear_stations_table(priv);
b481de9c
ZY		 3523
3524 /* load bootstrap state machine,
3525 * load bootstrap program into processor's memory,
3526 * prepare to load the "initialize" uCode */
57aab75a 3527 ret = priv->cfg->ops->lib->load_ucode(priv);
b481de9c 3528
57aab75a
TW		 3529 if (ret) {
3530 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
b481de9c
ZY		 3531 continue;
3532 }
3533
3534 /* start card; "initialize" will load runtime ucode */
edcdf8b2 3535 iwl4965_nic_start(priv);
b481de9c 3536
b481de9c
ZY		 3537 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
3538
3539 return 0;
3540 }
3541
3542 set_bit(STATUS_EXIT_PENDING, &priv->status);
bb8c093b 3543 __iwl4965_down(priv);
b481de9c
ZY		 3544
3545 /* tried to restart and config the device for as long as our
3546 * patience could withstand */
3547 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
3548 return -EIO;
3549}
3550
3551
3552/*****************************************************************************
3553 *
3554 * Workqueue callbacks
3555 *
3556 *****************************************************************************/
3557
4a4a9e81 3558static void iwl_bg_init_alive_start(struct work_struct *data)
b481de9c 3559{
c79dd5b5
TW		 3560 struct iwl_priv *priv =
3561 container_of(data, struct iwl_priv, init_alive_start.work);
b481de9c
ZY		 3562
3563 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3564 return;
3565
3566 mutex_lock(&priv->mutex);
f3ccc08c 3567 priv->cfg->ops->lib->init_alive_start(priv);
b481de9c
ZY		 3568 mutex_unlock(&priv->mutex);
3569}
3570
4a4a9e81 3571static void iwl_bg_alive_start(struct work_struct *data)
b481de9c 3572{
c79dd5b5
TW		 3573 struct iwl_priv *priv =
3574 container_of(data, struct iwl_priv, alive_start.work);
b481de9c
ZY		 3575
3576 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3577 return;
3578
3579 mutex_lock(&priv->mutex);
4a4a9e81 3580 iwl_alive_start(priv);
b481de9c
ZY		 3581 mutex_unlock(&priv->mutex);
3582}
3583
bb8c093b 3584static void iwl4965_bg_rf_kill(struct work_struct *work)
b481de9c 3585{
c79dd5b5 3586 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
b481de9c
ZY		 3587
3588 wake_up_interruptible(&priv->wait_command_queue);
3589
3590 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3591 return;
3592
3593 mutex_lock(&priv->mutex);
3594
fee1247a 3595 if (!iwl_is_rfkill(priv)) {
f3d67999 3596 IWL_DEBUG(IWL_DL_RF_KILL,
b481de9c
ZY		 3597 "HW and/or SW RF Kill no longer active, restarting "
3598 "device\n");
3599 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
3600 queue_work(priv->workqueue, &priv->restart);
3601 } else {
ad97edd2
MA		 3602 /* make sure mac80211 stop sending Tx frame */
3603 if (priv->mac80211_registered)
3604 ieee80211_stop_queues(priv->hw);
b481de9c
ZY		 3605
3606 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
3607 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3608 "disabled by SW switch\n");
3609 else
3610 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
3611 "Kill switch must be turned off for "
3612 "wireless networking to work.\n");
3613 }
ad97edd2
MA		 3614 iwl_rfkill_set_hw_state(priv);
3615
b481de9c
ZY		 3616 mutex_unlock(&priv->mutex);
3617}
3618
4419e39b
AK		 3619static void iwl4965_bg_set_monitor(struct work_struct *work)
3620{
3621 struct iwl_priv *priv = container_of(work,
3622 struct iwl_priv, set_monitor);
3623
3624 IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
3625
3626 mutex_lock(&priv->mutex);
3627
3628 if (!iwl_is_ready(priv))
3629 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
3630 else
3631 if (iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR) != 0)
3632 IWL_ERROR("iwl4965_set_mode() failed\n");
3633
3634 mutex_unlock(&priv->mutex);
3635}
3636
b481de9c
ZY		 3637#define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
3638
bb8c093b 3639static void iwl4965_bg_scan_check(struct work_struct *data)
b481de9c 3640{
c79dd5b5
TW		 3641 struct iwl_priv *priv =
3642 container_of(data, struct iwl_priv, scan_check.work);
b481de9c
ZY		 3643
3644 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3645 return;
3646
3647 mutex_lock(&priv->mutex);
3648 if (test_bit(STATUS_SCANNING, &priv->status) ||
3649 test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
f3d67999
EK		 3650 IWL_DEBUG(IWL_DL_SCAN, "Scan completion watchdog resetting "
3651 "adapter (%dms)\n",
3652 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
052c4b9f 3653
b481de9c 3654 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
bb8c093b 3655 iwl4965_send_scan_abort(priv);
b481de9c
ZY		 3656 }
3657 mutex_unlock(&priv->mutex);
3658}
3659
bb8c093b 3660static void iwl4965_bg_request_scan(struct work_struct *data)
b481de9c 3661{
c79dd5b5
TW		 3662 struct iwl_priv *priv =
3663 container_of(data, struct iwl_priv, request_scan);
857485c0 3664 struct iwl_host_cmd cmd = {
b481de9c 3665 .id = REPLY_SCAN_CMD,
bb8c093b 3666 .len = sizeof(struct iwl4965_scan_cmd),
b481de9c
ZY		 3667 .meta.flags = CMD_SIZE_HUGE,
3668 };
bb8c093b 3669 struct iwl4965_scan_cmd *scan;
b481de9c 3670 struct ieee80211_conf *conf = NULL;
78330fdd 3671 u16 cmd_len;
8318d78a 3672 enum ieee80211_band band;
78330fdd 3673 u8 direct_mask;
857485c0 3674 int ret = 0;
b481de9c
ZY		 3675
3676 conf = ieee80211_get_hw_conf(priv->hw);
3677
3678 mutex_lock(&priv->mutex);
3679
fee1247a 3680 if (!iwl_is_ready(priv)) {
b481de9c
ZY		 3681 IWL_WARNING("request scan called when driver not ready.\n");
3682 goto done;
3683 }
3684
3685 /* Make sure the scan wasn't cancelled before this queued work
3686 * was given the chance to run... */
3687 if (!test_bit(STATUS_SCANNING, &priv->status))
3688 goto done;
3689
3690 /* This should never be called or scheduled if there is currently
3691 * a scan active in the hardware. */
3692 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
3693 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
3694 "Ignoring second request.\n");
857485c0 3695 ret = -EIO;
b481de9c
ZY		 3696 goto done;
3697 }
3698
3699 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3700 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
3701 goto done;
3702 }
3703
3704 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3705 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
3706 goto done;
3707 }
3708
fee1247a 3709 if (iwl_is_rfkill(priv)) {
b481de9c
ZY		 3710 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
3711 goto done;
3712 }
3713
3714 if (!test_bit(STATUS_READY, &priv->status)) {
3715 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
3716 goto done;
3717 }
3718
3719 if (!priv->scan_bands) {
3720 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
3721 goto done;
3722 }
3723
3724 if (!priv->scan) {
bb8c093b 3725 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
b481de9c
ZY		 3726 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
3727 if (!priv->scan) {
857485c0 3728 ret = -ENOMEM;
b481de9c
ZY		 3729 goto done;
3730 }
3731 }
3732 scan = priv->scan;
bb8c093b 3733 memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
b481de9c
ZY		 3734
3735 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
3736 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
3737
3109ece1 3738 if (iwl_is_associated(priv)) {
b481de9c
ZY		 3739 u16 interval = 0;
3740 u32 extra;
3741 u32 suspend_time = 100;
3742 u32 scan_suspend_time = 100;
3743 unsigned long flags;
3744
3745 IWL_DEBUG_INFO("Scanning while associated...\n");
3746
3747 spin_lock_irqsave(&priv->lock, flags);
3748 interval = priv->beacon_int;
3749 spin_unlock_irqrestore(&priv->lock, flags);
3750
3751 scan->suspend_time = 0;
052c4b9f 3752 scan->max_out_time = cpu_to_le32(200 * 1024);
b481de9c
ZY		 3753 if (!interval)
3754 interval = suspend_time;
3755
3756 extra = (suspend_time / interval) << 22;
3757 scan_suspend_time = (extra |
3758 ((suspend_time % interval) * 1024));
3759 scan->suspend_time = cpu_to_le32(scan_suspend_time);
3760 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
3761 scan_suspend_time, interval);
3762 }
3763
3764 /* We should add the ability for user to lock to PASSIVE ONLY */
3765 if (priv->one_direct_scan) {
3766 IWL_DEBUG_SCAN
3767 ("Kicking off one direct scan for '%s'\n",
bb8c093b 3768 iwl4965_escape_essid(priv->direct_ssid,
b481de9c
ZY		 3769 priv->direct_ssid_len));
3770 scan->direct_scan[0].id = WLAN_EID_SSID;
3771 scan->direct_scan[0].len = priv->direct_ssid_len;
3772 memcpy(scan->direct_scan[0].ssid,
3773 priv->direct_ssid, priv->direct_ssid_len);
3774 direct_mask = 1;
3109ece1 3775 } else if (!iwl_is_associated(priv) && priv->essid_len) {
786b4557
BM		 3776 IWL_DEBUG_SCAN
3777 ("Kicking off one direct scan for '%s' when not associated\n",
3778 iwl4965_escape_essid(priv->essid, priv->essid_len));
b481de9c
ZY		 3779 scan->direct_scan[0].id = WLAN_EID_SSID;
3780 scan->direct_scan[0].len = priv->essid_len;
3781 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
3782 direct_mask = 1;
857485c0 3783 } else {
786b4557 3784 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
b481de9c 3785 direct_mask = 0;
857485c0 3786 }
b481de9c 3787
b481de9c 3788 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
5425e490 3789 scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
b481de9c
ZY		 3790 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
3791
b481de9c
ZY		 3792
3793 switch (priv->scan_bands) {
3794 case 2:
3795 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
3796 scan->tx_cmd.rate_n_flags =
bb8c093b 3797 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
b481de9c
ZY		 3798 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
3799
3800 scan->good_CRC_th = 0;
8318d78a 3801 band = IEEE80211_BAND_2GHZ;
b481de9c
ZY		 3802 break;
3803
3804 case 1:
3805 scan->tx_cmd.rate_n_flags =
bb8c093b 3806 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
b481de9c
ZY		 3807 RATE_MCS_ANT_B_MSK);
3808 scan->good_CRC_th = IWL_GOOD_CRC_TH;
8318d78a 3809 band = IEEE80211_BAND_5GHZ;
b481de9c
ZY		 3810 break;
3811
3812 default:
3813 IWL_WARNING("Invalid scan band count\n");
3814 goto done;
3815 }
3816
78330fdd
TW		 3817 /* We don't build a direct scan probe request; the uCode will do
3818 * that based on the direct_mask added to each channel entry */
3819 cmd_len = iwl4965_fill_probe_req(priv, band,
3820 (struct ieee80211_mgmt *)scan->data,
3821 IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
3822
3823 scan->tx_cmd.len = cpu_to_le16(cmd_len);
b481de9c
ZY		 3824 /* select Rx chains */
3825
3826 /* Force use of chains B and C (0x6) for scan Rx.
3827 * Avoid A (0x1) because of its off-channel reception on A-band.
3828 * MIMO is not used here, but value is required to make uCode happy. */
3829 scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
3830 cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
3831 (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
3832 (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
3833
3834 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
3835 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
3836
786b4557 3837 if (direct_mask)
26c0f03f
RC		 3838 scan->channel_count =
3839 iwl4965_get_channels_for_scan(
3840 priv, band, 1, /* active */
3841 direct_mask,
3842 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
786b4557 3843 else
26c0f03f
RC		 3844 scan->channel_count =
3845 iwl4965_get_channels_for_scan(
3846 priv, band, 0, /* passive */
3847 direct_mask,
3848 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
b481de9c 3849
5da4b55f
MA		 3850 scan->filter_flags |= (RXON_FILTER_ACCEPT_GRP_MSK |
3851 RXON_FILTER_BCON_AWARE_MSK);
b481de9c 3852 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
bb8c093b 3853 scan->channel_count * sizeof(struct iwl4965_scan_channel);
b481de9c
ZY		 3854 cmd.data = scan;
3855 scan->len = cpu_to_le16(cmd.len);
3856
3857 set_bit(STATUS_SCAN_HW, &priv->status);
857485c0
TW		 3858 ret = iwl_send_cmd_sync(priv, &cmd);
3859 if (ret)
b481de9c
ZY		 3860 goto done;
3861
3862 queue_delayed_work(priv->workqueue, &priv->scan_check,
3863 IWL_SCAN_CHECK_WATCHDOG);
3864
3865 mutex_unlock(&priv->mutex);
3866 return;
3867
3868 done:
01ebd063 3869 /* inform mac80211 scan aborted */
b481de9c
ZY		 3870 queue_work(priv->workqueue, &priv->scan_completed);
3871 mutex_unlock(&priv->mutex);
3872}
3873
bb8c093b 3874static void iwl4965_bg_up(struct work_struct *data)
b481de9c 3875{
c79dd5b5 3876 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
b481de9c
ZY		 3877
3878 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3879 return;
3880
3881 mutex_lock(&priv->mutex);
bb8c093b 3882 __iwl4965_up(priv);
b481de9c
ZY		 3883 mutex_unlock(&priv->mutex);
3884}
3885
bb8c093b 3886static void iwl4965_bg_restart(struct work_struct *data)
b481de9c 3887{
c79dd5b5 3888 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
b481de9c
ZY		 3889
3890 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3891 return;
3892
bb8c093b 3893 iwl4965_down(priv);
b481de9c
ZY		 3894 queue_work(priv->workqueue, &priv->up);
3895}
3896
bb8c093b 3897static void iwl4965_bg_rx_replenish(struct work_struct *data)
b481de9c 3898{
c79dd5b5
TW		 3899 struct iwl_priv *priv =
3900 container_of(data, struct iwl_priv, rx_replenish);
b481de9c
ZY		 3901
3902 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3903 return;
3904
3905 mutex_lock(&priv->mutex);
a55360e4 3906 iwl_rx_replenish(priv);
b481de9c
ZY		 3907 mutex_unlock(&priv->mutex);
3908}
3909
7878a5a4
MA		 3910#define IWL_DELAY_NEXT_SCAN (HZ*2)
3911
508e32e1 3912static void iwl4965_post_associate(struct iwl_priv *priv)
b481de9c 3913{
b481de9c 3914 struct ieee80211_conf *conf = NULL;
857485c0 3915 int ret = 0;
0795af57 3916 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 3917
3918 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
3919 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
3920 return;
3921 }
3922
0795af57
JP		 3923 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
3924 priv->assoc_id,
3925 print_mac(mac, priv->active_rxon.bssid_addr));
b481de9c
ZY		 3926
3927
3928 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3929 return;
3930
b481de9c 3931
508e32e1 3932 if (!priv->vif || !priv->is_open)
948c171c 3933 return;
508e32e1 3934
bb8c093b 3935 iwl4965_scan_cancel_timeout(priv, 200);
052c4b9f 3936
b481de9c
ZY		 3937 conf = ieee80211_get_hw_conf(priv->hw);
3938
3939 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
bb8c093b 3940 iwl4965_commit_rxon(priv);
b481de9c 3941
bb8c093b
CH		 3942 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
3943 iwl4965_setup_rxon_timing(priv);
857485c0 3944 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
b481de9c 3945 sizeof(priv->rxon_timing), &priv->rxon_timing);
857485c0 3946 if (ret)
b481de9c
ZY		 3947 IWL_WARNING("REPLY_RXON_TIMING failed - "
3948 "Attempting to continue.\n");
3949
3950 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3951
c8b0e6e1 3952#ifdef CONFIG_IWL4965_HT
fd105e79 3953 if (priv->current_ht_config.is_ht)
47c5196e 3954 iwl_set_rxon_ht(priv, &priv->current_ht_config);
c8b0e6e1 3955#endif /* CONFIG_IWL4965_HT*/
c7de35cd 3956 iwl_set_rxon_chain(priv);
b481de9c
ZY		 3957 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3958
3959 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
3960 priv->assoc_id, priv->beacon_int);
3961
3962 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3963 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3964 else
3965 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3966
3967 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3968 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
3969 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3970 else
3971 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3972
3973 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
3974 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3975
3976 }
3977
bb8c093b 3978 iwl4965_commit_rxon(priv);
b481de9c
ZY		 3979
3980 switch (priv->iw_mode) {
3981 case IEEE80211_IF_TYPE_STA:
bb8c093b 3982 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
b481de9c
ZY		 3983 break;
3984
3985 case IEEE80211_IF_TYPE_IBSS:
3986
3987 /* clear out the station table */
bf85ea4f 3988 iwlcore_clear_stations_table(priv);
b481de9c 3989
4f40e4d9
TW		 3990 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
3991 iwl_rxon_add_station(priv, priv->bssid, 0);
bb8c093b
CH		 3992 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
3993 iwl4965_send_beacon_cmd(priv);
b481de9c
ZY		 3994
3995 break;
3996
3997 default:
3998 IWL_ERROR("%s Should not be called in %d mode\n",
3999 __FUNCTION__, priv->iw_mode);
4000 break;
4001 }
4002
bb8c093b 4003 iwl4965_sequence_reset(priv);
b481de9c 4004
b481de9c 4005 /* Enable Rx differential gain and sensitivity calibrations */
f0832f13 4006 iwl_chain_noise_reset(priv);
b481de9c 4007 priv->start_calib = 1;
b481de9c
ZY		 4008
4009 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
4010 priv->assoc_station_added = 1;
4011
bb8c093b 4012 iwl4965_activate_qos(priv, 0);
292ae174 4013
5da4b55f 4014 iwl_power_update_mode(priv, 0);
7878a5a4
MA		 4015 /* we have just associated, don't start scan too early */
4016 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
508e32e1
RC		 4017}
4018
4019
4020static void iwl4965_bg_post_associate(struct work_struct *data)
4021{
4022 struct iwl_priv *priv = container_of(data, struct iwl_priv,
4023 post_associate.work);
4024
4025 mutex_lock(&priv->mutex);
4026 iwl4965_post_associate(priv);
b481de9c 4027 mutex_unlock(&priv->mutex);
508e32e1 4028
b481de9c
ZY		 4029}
4030
bb8c093b 4031static void iwl4965_bg_abort_scan(struct work_struct *work)
b481de9c 4032{
c79dd5b5 4033 struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
b481de9c 4034
fee1247a 4035 if (!iwl_is_ready(priv))
b481de9c
ZY		 4036 return;
4037
4038 mutex_lock(&priv->mutex);
4039
4040 set_bit(STATUS_SCAN_ABORTING, &priv->status);
bb8c093b 4041 iwl4965_send_scan_abort(priv);
b481de9c
ZY		 4042
4043 mutex_unlock(&priv->mutex);
4044}
4045
76bb77e0
ZY		 4046static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
4047
bb8c093b 4048static void iwl4965_bg_scan_completed(struct work_struct *work)
b481de9c 4049{
c79dd5b5
TW		 4050 struct iwl_priv *priv =
4051 container_of(work, struct iwl_priv, scan_completed);
b481de9c 4052
f3d67999 4053 IWL_DEBUG(IWL_DL_SCAN, "SCAN complete scan\n");
b481de9c
ZY		 4054
4055 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4056 return;
4057
a0646470
ZY		 4058 if (test_bit(STATUS_CONF_PENDING, &priv->status))
4059 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
76bb77e0 4060
b481de9c
ZY		 4061 ieee80211_scan_completed(priv->hw);
4062
4063 /* Since setting the TXPOWER may have been deferred while
4064 * performing the scan, fire one off */
4065 mutex_lock(&priv->mutex);
bb8c093b 4066 iwl4965_hw_reg_send_txpower(priv);
b481de9c
ZY		 4067 mutex_unlock(&priv->mutex);
4068}
4069
4070/*****************************************************************************
4071 *
4072 * mac80211 entry point functions
4073 *
4074 *****************************************************************************/
4075
5a66926a
ZY		 4076#define UCODE_READY_TIMEOUT (2 * HZ)
4077
bb8c093b 4078static int iwl4965_mac_start(struct ieee80211_hw *hw)
b481de9c 4079{
c79dd5b5 4080 struct iwl_priv *priv = hw->priv;
5a66926a 4081 int ret;
b481de9c
ZY		 4082
4083 IWL_DEBUG_MAC80211("enter\n");
4084
5a66926a
ZY		 4085 if (pci_enable_device(priv->pci_dev)) {
4086 IWL_ERROR("Fail to pci_enable_device\n");
4087 return -ENODEV;
4088 }
4089 pci_restore_state(priv->pci_dev);
4090 pci_enable_msi(priv->pci_dev);
4091
4092 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
4093 DRV_NAME, priv);
4094 if (ret) {
4095 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
4096 goto out_disable_msi;
4097 }
4098
b481de9c
ZY		 4099 /* we should be verifying the device is ready to be opened */
4100 mutex_lock(&priv->mutex);
4101
c1adf9fb 4102 memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
5a66926a
ZY		 4103 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
4104 * ucode filename and max sizes are card-specific. */
b481de9c 4105
5a66926a
ZY		 4106 if (!priv->ucode_code.len) {
4107 ret = iwl4965_read_ucode(priv);
4108 if (ret) {
4109 IWL_ERROR("Could not read microcode: %d\n", ret);
4110 mutex_unlock(&priv->mutex);
4111 goto out_release_irq;
4112 }
4113 }
b481de9c 4114
e655b9f0 4115 ret = __iwl4965_up(priv);
5a66926a 4116
b481de9c 4117 mutex_unlock(&priv->mutex);
5a66926a 4118
e655b9f0
ZY		 4119 if (ret)
4120 goto out_release_irq;
4121
4122 IWL_DEBUG_INFO("Start UP work done.\n");
4123
4124 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
4125 return 0;
4126
5a66926a
ZY		 4127 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
4128 * mac80211 will not be run successfully. */
4129 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
4130 test_bit(STATUS_READY, &priv->status),
4131 UCODE_READY_TIMEOUT);
4132 if (!ret) {
4133 if (!test_bit(STATUS_READY, &priv->status)) {
4134 IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
4135 jiffies_to_msecs(UCODE_READY_TIMEOUT));
4136 ret = -ETIMEDOUT;
4137 goto out_release_irq;
4138 }
4139 }
4140
e655b9f0 4141 priv->is_open = 1;
b481de9c
ZY		 4142 IWL_DEBUG_MAC80211("leave\n");
4143 return 0;
5a66926a
ZY		 4144
4145out_release_irq:
4146 free_irq(priv->pci_dev->irq, priv);
4147out_disable_msi:
4148 pci_disable_msi(priv->pci_dev);
e655b9f0
ZY		 4149 pci_disable_device(priv->pci_dev);
4150 priv->is_open = 0;
4151 IWL_DEBUG_MAC80211("leave - failed\n");
5a66926a 4152 return ret;
b481de9c
ZY		 4153}
4154
bb8c093b 4155static void iwl4965_mac_stop(struct ieee80211_hw *hw)
b481de9c 4156{
c79dd5b5 4157 struct iwl_priv *priv = hw->priv;
b481de9c
ZY		 4158
4159 IWL_DEBUG_MAC80211("enter\n");
948c171c 4160
e655b9f0
ZY		 4161 if (!priv->is_open) {
4162 IWL_DEBUG_MAC80211("leave - skip\n");
4163 return;
4164 }
4165
b481de9c 4166 priv->is_open = 0;
5a66926a 4167
fee1247a 4168 if (iwl_is_ready_rf(priv)) {
e655b9f0
ZY		 4169 /* stop mac, cancel any scan request and clear
4170 * RXON_FILTER_ASSOC_MSK BIT
4171 */
5a66926a
ZY		 4172 mutex_lock(&priv->mutex);
4173 iwl4965_scan_cancel_timeout(priv, 100);
4174 cancel_delayed_work(&priv->post_associate);
fde3571f 4175 mutex_unlock(&priv->mutex);
fde3571f
MA		 4176 }
4177
5a66926a
ZY		 4178 iwl4965_down(priv);
4179
4180 flush_workqueue(priv->workqueue);
4181 free_irq(priv->pci_dev->irq, priv);
4182 pci_disable_msi(priv->pci_dev);
4183 pci_save_state(priv->pci_dev);
4184 pci_disable_device(priv->pci_dev);
948c171c 4185
b481de9c 4186 IWL_DEBUG_MAC80211("leave\n");
b481de9c
ZY		 4187}
4188
e039fa4a 4189static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
b481de9c 4190{
c79dd5b5 4191 struct iwl_priv *priv = hw->priv;
b481de9c
ZY		 4192
4193 IWL_DEBUG_MAC80211("enter\n");
4194
4195 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
4196 IWL_DEBUG_MAC80211("leave - monitor\n");
4197 return -1;
4198 }
4199
4200 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
e039fa4a 4201 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
b481de9c 4202
e039fa4a 4203 if (iwl_tx_skb(priv, skb))
b481de9c
ZY		 4204 dev_kfree_skb_any(skb);
4205
4206 IWL_DEBUG_MAC80211("leave\n");
4207 return 0;
4208}
4209
bb8c093b 4210static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
b481de9c
ZY		 4211 struct ieee80211_if_init_conf *conf)
4212{
c79dd5b5 4213 struct iwl_priv *priv = hw->priv;
b481de9c 4214 unsigned long flags;
0795af57 4215 DECLARE_MAC_BUF(mac);
b481de9c 4216
32bfd35d 4217 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
b481de9c 4218
32bfd35d
JB		 4219 if (priv->vif) {
4220 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
75849d28 4221 return -EOPNOTSUPP;
b481de9c
ZY		 4222 }
4223
4224 spin_lock_irqsave(&priv->lock, flags);
32bfd35d 4225 priv->vif = conf->vif;
b481de9c
ZY		 4226
4227 spin_unlock_irqrestore(&priv->lock, flags);
4228
4229 mutex_lock(&priv->mutex);
864792e3
TW		 4230
4231 if (conf->mac_addr) {
4232 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
4233 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
4234 }
b481de9c 4235
fee1247a 4236 if (iwl_is_ready(priv))
5a66926a
ZY		 4237 iwl4965_set_mode(priv, conf->type);
4238
b481de9c
ZY		 4239 mutex_unlock(&priv->mutex);
4240
5a66926a 4241 IWL_DEBUG_MAC80211("leave\n");
b481de9c
ZY		 4242 return 0;
4243}
4244
4245/**
bb8c093b 4246 * iwl4965_mac_config - mac80211 config callback
b481de9c
ZY		 4247 *
4248 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
4249 * be set inappropriately and the driver currently sets the hardware up to
4250 * use it whenever needed.
4251 */
bb8c093b 4252static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
b481de9c 4253{
c79dd5b5 4254 struct iwl_priv *priv = hw->priv;
bf85ea4f 4255 const struct iwl_channel_info *ch_info;
b481de9c 4256 unsigned long flags;
76bb77e0 4257 int ret = 0;
b481de9c
ZY		 4258
4259 mutex_lock(&priv->mutex);
8318d78a 4260 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
b481de9c 4261
12342c47
ZY		 4262 priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
4263
fee1247a 4264 if (!iwl_is_ready(priv)) {
b481de9c 4265 IWL_DEBUG_MAC80211("leave - not ready\n");
76bb77e0
ZY		 4266 ret = -EIO;
4267 goto out;
b481de9c
ZY		 4268 }
4269
1ea87396 4270 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
b481de9c 4271 test_bit(STATUS_SCANNING, &priv->status))) {
a0646470
ZY		 4272 IWL_DEBUG_MAC80211("leave - scanning\n");
4273 set_bit(STATUS_CONF_PENDING, &priv->status);
b481de9c 4274 mutex_unlock(&priv->mutex);
a0646470 4275 return 0;
b481de9c
ZY		 4276 }
4277
4278 spin_lock_irqsave(&priv->lock, flags);
4279
8622e705 4280 ch_info = iwl_get_channel_info(priv, conf->channel->band,
8318d78a 4281 ieee80211_frequency_to_channel(conf->channel->center_freq));
b481de9c 4282 if (!is_channel_valid(ch_info)) {
b481de9c
ZY		 4283 IWL_DEBUG_MAC80211("leave - invalid channel\n");
4284 spin_unlock_irqrestore(&priv->lock, flags);
76bb77e0
ZY		 4285 ret = -EINVAL;
4286 goto out;
b481de9c
ZY		 4287 }
4288
c8b0e6e1 4289#ifdef CONFIG_IWL4965_HT
78330fdd 4290 /* if we are switching from ht to 2.4 clear flags
b481de9c
ZY		 4291 * from any ht related info since 2.4 does not
4292 * support ht */
78330fdd 4293 if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel->hw_value)
b481de9c
ZY		 4294#ifdef IEEE80211_CONF_CHANNEL_SWITCH
4295 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
4296#endif
4297 )
4298 priv->staging_rxon.flags = 0;
c8b0e6e1 4299#endif /* CONFIG_IWL4965_HT */
b481de9c 4300
c7de35cd 4301 iwl_set_rxon_channel(priv, conf->channel->band,
8318d78a 4302 ieee80211_frequency_to_channel(conf->channel->center_freq));
b481de9c 4303
8318d78a 4304 iwl4965_set_flags_for_phymode(priv, conf->channel->band);
b481de9c
ZY		 4305
4306 /* The list of supported rates and rate mask can be different
8318d78a 4307 * for each band; since the band may have changed, reset
b481de9c 4308 * the rate mask to what mac80211 lists */
bb8c093b 4309 iwl4965_set_rate(priv);
b481de9c
ZY		 4310
4311 spin_unlock_irqrestore(&priv->lock, flags);
4312
4313#ifdef IEEE80211_CONF_CHANNEL_SWITCH
4314 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
bb8c093b 4315 iwl4965_hw_channel_switch(priv, conf->channel);
76bb77e0 4316 goto out;
b481de9c
ZY		 4317 }
4318#endif
4319
ad97edd2
MA		 4320 if (priv->cfg->ops->lib->radio_kill_sw)
4321 priv->cfg->ops->lib->radio_kill_sw(priv, !conf->radio_enabled);
b481de9c
ZY		 4322
4323 if (!conf->radio_enabled) {
4324 IWL_DEBUG_MAC80211("leave - radio disabled\n");
76bb77e0 4325 goto out;
b481de9c
ZY		 4326 }
4327
fee1247a 4328 if (iwl_is_rfkill(priv)) {
b481de9c 4329 IWL_DEBUG_MAC80211("leave - RF kill\n");
76bb77e0
ZY		 4330 ret = -EIO;
4331 goto out;
b481de9c
ZY		 4332 }
4333
bb8c093b 4334 iwl4965_set_rate(priv);
b481de9c
ZY		 4335
4336 if (memcmp(&priv->active_rxon,
4337 &priv->staging_rxon, sizeof(priv->staging_rxon)))
bb8c093b 4338 iwl4965_commit_rxon(priv);
b481de9c
ZY		 4339 else
4340 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
4341
4342 IWL_DEBUG_MAC80211("leave\n");
4343
a0646470
ZY		 4344out:
4345 clear_bit(STATUS_CONF_PENDING, &priv->status);
5a66926a 4346 mutex_unlock(&priv->mutex);
76bb77e0 4347 return ret;
b481de9c
ZY		 4348}
4349
c79dd5b5 4350static void iwl4965_config_ap(struct iwl_priv *priv)
b481de9c 4351{
857485c0 4352 int ret = 0;
b481de9c 4353
d986bcd1 4354 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
b481de9c
ZY		 4355 return;
4356
4357 /* The following should be done only at AP bring up */
4358 if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
4359
4360 /* RXON - unassoc (to set timing command) */
4361 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
bb8c093b 4362 iwl4965_commit_rxon(priv);
b481de9c
ZY		 4363
4364 /* RXON Timing */
bb8c093b
CH		 4365 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
4366 iwl4965_setup_rxon_timing(priv);
857485c0 4367 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
b481de9c 4368 sizeof(priv->rxon_timing), &priv->rxon_timing);
857485c0 4369 if (ret)
b481de9c
ZY		 4370 IWL_WARNING("REPLY_RXON_TIMING failed - "
4371 "Attempting to continue.\n");
4372
c7de35cd 4373 iwl_set_rxon_chain(priv);
b481de9c
ZY		 4374
4375 /* FIXME: what should be the assoc_id for AP? */
4376 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
4377 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
4378 priv->staging_rxon.flags |=
4379 RXON_FLG_SHORT_PREAMBLE_MSK;
4380 else
4381 priv->staging_rxon.flags &=
4382 ~RXON_FLG_SHORT_PREAMBLE_MSK;
4383
4384 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
4385 if (priv->assoc_capability &
4386 WLAN_CAPABILITY_SHORT_SLOT_TIME)
4387 priv->staging_rxon.flags |=
4388 RXON_FLG_SHORT_SLOT_MSK;
4389 else
4390 priv->staging_rxon.flags &=
4391 ~RXON_FLG_SHORT_SLOT_MSK;
4392
4393 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
4394 priv->staging_rxon.flags &=
4395 ~RXON_FLG_SHORT_SLOT_MSK;
4396 }
4397 /* restore RXON assoc */
4398 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
bb8c093b 4399 iwl4965_commit_rxon(priv);
bb8c093b 4400 iwl4965_activate_qos(priv, 1);
4f40e4d9 4401 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
e1493deb 4402 }
bb8c093b 4403 iwl4965_send_beacon_cmd(priv);
b481de9c
ZY		 4404
4405 /* FIXME - we need to add code here to detect a totally new
4406 * configuration, reset the AP, unassoc, rxon timing, assoc,
4407 * clear sta table, add BCAST sta... */
4408}
4409
32bfd35d
JB		 4410static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
4411 struct ieee80211_vif *vif,
b481de9c
ZY		 4412 struct ieee80211_if_conf *conf)
4413{
c79dd5b5 4414 struct iwl_priv *priv = hw->priv;
0795af57 4415 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 4416 unsigned long flags;
4417 int rc;
4418
4419 if (conf == NULL)
4420 return -EIO;
4421
b716bb91
EG		 4422 if (priv->vif != vif) {
4423 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
b716bb91
EG		 4424 return 0;
4425 }
4426
b481de9c
ZY		 4427 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
4428 (!conf->beacon || !conf->ssid_len)) {
4429 IWL_DEBUG_MAC80211
4430 ("Leaving in AP mode because HostAPD is not ready.\n");
4431 return 0;
4432 }
4433
fee1247a 4434 if (!iwl_is_alive(priv))
5a66926a
ZY		 4435 return -EAGAIN;
4436
b481de9c
ZY		 4437 mutex_lock(&priv->mutex);
4438
b481de9c 4439 if (conf->bssid)
0795af57
JP		 4440 IWL_DEBUG_MAC80211("bssid: %s\n",
4441 print_mac(mac, conf->bssid));
b481de9c 4442
4150c572
JB		 4443/*
4444 * very dubious code was here; the probe filtering flag is never set:
4445 *
b481de9c
ZY		 4446 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
4447 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
4150c572 4448 */
b481de9c
ZY		 4449
4450 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
4451 if (!conf->bssid) {
4452 conf->bssid = priv->mac_addr;
4453 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
0795af57
JP		 4454 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
4455 print_mac(mac, conf->bssid));
b481de9c
ZY		 4456 }
4457 if (priv->ibss_beacon)
4458 dev_kfree_skb(priv->ibss_beacon);
4459
4460 priv->ibss_beacon = conf->beacon;
4461 }
4462
fee1247a 4463 if (iwl_is_rfkill(priv))
fde3571f
MA		 4464 goto done;
4465
b481de9c
ZY		 4466 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
4467 !is_multicast_ether_addr(conf->bssid)) {
4468 /* If there is currently a HW scan going on in the background
4469 * then we need to cancel it else the RXON below will fail. */
bb8c093b 4470 if (iwl4965_scan_cancel_timeout(priv, 100)) {
b481de9c
ZY		 4471 IWL_WARNING("Aborted scan still in progress "
4472 "after 100ms\n");
4473 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
4474 mutex_unlock(&priv->mutex);
4475 return -EAGAIN;
4476 }
4477 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
4478
4479 /* TODO: Audit driver for usage of these members and see
4480 * if mac80211 deprecates them (priv->bssid looks like it
4481 * shouldn't be there, but I haven't scanned the IBSS code
4482 * to verify) - jpk */
4483 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
4484
4485 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
bb8c093b 4486 iwl4965_config_ap(priv);
b481de9c 4487 else {
bb8c093b 4488 rc = iwl4965_commit_rxon(priv);
b481de9c 4489 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
4f40e4d9 4490 iwl_rxon_add_station(
b481de9c
ZY		 4491 priv, priv->active_rxon.bssid_addr, 1);
4492 }
4493
4494 } else {
bb8c093b 4495 iwl4965_scan_cancel_timeout(priv, 100);
b481de9c 4496 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
bb8c093b 4497 iwl4965_commit_rxon(priv);
b481de9c
ZY		 4498 }
4499
fde3571f 4500 done:
b481de9c
ZY		 4501 spin_lock_irqsave(&priv->lock, flags);
4502 if (!conf->ssid_len)
4503 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
4504 else
4505 memcpy(priv->essid, conf->ssid, conf->ssid_len);
4506
4507 priv->essid_len = conf->ssid_len;
4508 spin_unlock_irqrestore(&priv->lock, flags);
4509
4510 IWL_DEBUG_MAC80211("leave\n");
4511 mutex_unlock(&priv->mutex);
4512
4513 return 0;
4514}
4515
bb8c093b 4516static void iwl4965_configure_filter(struct ieee80211_hw *hw,
4150c572
JB		 4517 unsigned int changed_flags,
4518 unsigned int *total_flags,
4519 int mc_count, struct dev_addr_list *mc_list)
4520{
4521 /*
4522 * XXX: dummy
bb8c093b 4523 * see also iwl4965_connection_init_rx_config
4150c572 4524 */
4419e39b
AK		 4525 struct iwl_priv *priv = hw->priv;
4526 int new_flags = 0;
4527 if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
4528 if (*total_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
4529 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
4530 IEEE80211_IF_TYPE_MNTR,
4531 changed_flags, *total_flags);
4532 /* queue work 'cuz mac80211 is holding a lock which
4533 * prevents us from issuing (synchronous) f/w cmds */
4534 queue_work(priv->workqueue, &priv->set_monitor);
4535 new_flags &= FIF_PROMISC_IN_BSS |
4536 FIF_OTHER_BSS |
4537 FIF_ALLMULTI;
4538 }
4539 }
4540 *total_flags = new_flags;
4150c572
JB		 4541}
4542
bb8c093b 4543static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
b481de9c
ZY		 4544 struct ieee80211_if_init_conf *conf)
4545{
c79dd5b5 4546 struct iwl_priv *priv = hw->priv;
b481de9c
ZY		 4547
4548 IWL_DEBUG_MAC80211("enter\n");
4549
4550 mutex_lock(&priv->mutex);
948c171c 4551
fee1247a 4552 if (iwl_is_ready_rf(priv)) {
fde3571f
MA		 4553 iwl4965_scan_cancel_timeout(priv, 100);
4554 cancel_delayed_work(&priv->post_associate);
4555 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4556 iwl4965_commit_rxon(priv);
4557 }
32bfd35d
JB		 4558 if (priv->vif == conf->vif) {
4559 priv->vif = NULL;
b481de9c
ZY		 4560 memset(priv->bssid, 0, ETH_ALEN);
4561 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
4562 priv->essid_len = 0;
4563 }
4564 mutex_unlock(&priv->mutex);
4565
4566 IWL_DEBUG_MAC80211("leave\n");
4567
4568}
471b3efd 4569
3109ece1 4570#define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
471b3efd
JB		 4571static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
4572 struct ieee80211_vif *vif,
4573 struct ieee80211_bss_conf *bss_conf,
4574 u32 changes)
220173b0 4575{
c79dd5b5 4576 struct iwl_priv *priv = hw->priv;
220173b0 4577
3109ece1
TW		 4578 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
4579
471b3efd 4580 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3109ece1
TW		 4581 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
4582 bss_conf->use_short_preamble);
471b3efd 4583 if (bss_conf->use_short_preamble)
220173b0
TW		 4584 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
4585 else
4586 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
4587 }
4588
471b3efd 4589 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3109ece1 4590 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
8318d78a 4591 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
220173b0
TW		 4592 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
4593 else
4594 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
4595 }
4596
98952d5d 4597 if (changes & BSS_CHANGED_HT) {
3109ece1 4598 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
98952d5d 4599 iwl4965_ht_conf(priv, bss_conf);
c7de35cd 4600 iwl_set_rxon_chain(priv);
98952d5d
TW		 4601 }
4602
471b3efd 4603 if (changes & BSS_CHANGED_ASSOC) {
3109ece1 4604 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
508e32e1
RC		 4605 /* This should never happen as this function should
4606 * never be called from interrupt context. */
4607 if (WARN_ON_ONCE(in_interrupt()))
4608 return;
3109ece1
TW		 4609 if (bss_conf->assoc) {
4610 priv->assoc_id = bss_conf->aid;
4611 priv->beacon_int = bss_conf->beacon_int;
4612 priv->timestamp = bss_conf->timestamp;
4613 priv->assoc_capability = bss_conf->assoc_capability;
4614 priv->next_scan_jiffies = jiffies +
4615 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
508e32e1
RC		 4616 mutex_lock(&priv->mutex);
4617 iwl4965_post_associate(priv);
4618 mutex_unlock(&priv->mutex);
3109ece1
TW		 4619 } else {
4620 priv->assoc_id = 0;
4621 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
4622 }
4623 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
4624 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
7e8c519e 4625 iwl_send_rxon_assoc(priv);
471b3efd
JB		 4626 }
4627
220173b0 4628}
b481de9c 4629
bb8c093b 4630static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
b481de9c
ZY		 4631{
4632 int rc = 0;
4633 unsigned long flags;
c79dd5b5 4634 struct iwl_priv *priv = hw->priv;
b481de9c
ZY		 4635
4636 IWL_DEBUG_MAC80211("enter\n");
4637
052c4b9f 4638 mutex_lock(&priv->mutex);
b481de9c
ZY		 4639 spin_lock_irqsave(&priv->lock, flags);
4640
fee1247a 4641 if (!iwl_is_ready_rf(priv)) {
b481de9c
ZY		 4642 rc = -EIO;
4643 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
4644 goto out_unlock;
4645 }
4646
4647 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
4648 rc = -EIO;
4649 IWL_ERROR("ERROR: APs don't scan\n");
4650 goto out_unlock;
4651 }
4652
7878a5a4
MA		 4653 /* we don't schedule scan within next_scan_jiffies period */
4654 if (priv->next_scan_jiffies &&
4655 time_after(priv->next_scan_jiffies, jiffies)) {
4656 rc = -EAGAIN;
4657 goto out_unlock;
4658 }
b481de9c 4659 /* if we just finished scan ask for delay */
7878a5a4
MA		 4660 if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
4661 IWL_DELAY_NEXT_SCAN, jiffies)) {
b481de9c
ZY		 4662 rc = -EAGAIN;
4663 goto out_unlock;
4664 }
4665 if (len) {
7878a5a4 4666 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
bb8c093b 4667 iwl4965_escape_essid(ssid, len), (int)len);
b481de9c
ZY		 4668
4669 priv->one_direct_scan = 1;
4670 priv->direct_ssid_len = (u8)
4671 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
4672 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
948c171c
MA		 4673 } else
4674 priv->one_direct_scan = 0;
b481de9c 4675
bb8c093b 4676 rc = iwl4965_scan_initiate(priv);
b481de9c
ZY		 4677
4678 IWL_DEBUG_MAC80211("leave\n");
4679
4680out_unlock:
4681 spin_unlock_irqrestore(&priv->lock, flags);
052c4b9f 4682 mutex_unlock(&priv->mutex);
b481de9c
ZY		 4683
4684 return rc;
4685}
4686
ab885f8c
EG		 4687static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
4688 struct ieee80211_key_conf *keyconf, const u8 *addr,
4689 u32 iv32, u16 *phase1key)
4690{
4691 struct iwl_priv *priv = hw->priv;
4692 u8 sta_id = IWL_INVALID_STATION;
4693 unsigned long flags;
4694 __le16 key_flags = 0;
4695 int i;
4696 DECLARE_MAC_BUF(mac);
4697
4698 IWL_DEBUG_MAC80211("enter\n");
4699
947b13a7 4700 sta_id = iwl_find_station(priv, addr);
ab885f8c
EG		 4701 if (sta_id == IWL_INVALID_STATION) {
4702 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
4703 print_mac(mac, addr));
4704 return;
4705 }
4706
4707 iwl4965_scan_cancel_timeout(priv, 100);
4708
4709 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
4710 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
4711 key_flags &= ~STA_KEY_FLG_INVALID;
4712
5425e490 4713 if (sta_id == priv->hw_params.bcast_sta_id)
ab885f8c
EG		 4714 key_flags |= STA_KEY_MULTICAST_MSK;
4715
4716 spin_lock_irqsave(&priv->sta_lock, flags);
4717
ab885f8c
EG		 4718 priv->stations[sta_id].sta.key.key_flags = key_flags;
4719 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
4720
4721 for (i = 0; i < 5; i++)
4722 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
4723 cpu_to_le16(phase1key[i]);
4724
4725 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
4726 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
4727
133636de 4728 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
ab885f8c
EG		 4729
4730 spin_unlock_irqrestore(&priv->sta_lock, flags);
4731
4732 IWL_DEBUG_MAC80211("leave\n");
4733}
4734
bb8c093b 4735static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
b481de9c
ZY		 4736 const u8 *local_addr, const u8 *addr,
4737 struct ieee80211_key_conf *key)
4738{
c79dd5b5 4739 struct iwl_priv *priv = hw->priv;
0795af57 4740 DECLARE_MAC_BUF(mac);
deb09c43
EG		 4741 int ret = 0;
4742 u8 sta_id = IWL_INVALID_STATION;
6974e363 4743 u8 is_default_wep_key = 0;
b481de9c
ZY		 4744
4745 IWL_DEBUG_MAC80211("enter\n");
4746
099b40b7 4747 if (priv->hw_params.sw_crypto) {
b481de9c
ZY		 4748 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
4749 return -EOPNOTSUPP;
4750 }
4751
4752 if (is_zero_ether_addr(addr))
4753 /* only support pairwise keys */
4754 return -EOPNOTSUPP;
4755
947b13a7 4756 sta_id = iwl_find_station(priv, addr);
6974e363
EG		 4757 if (sta_id == IWL_INVALID_STATION) {
4758 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
4759 print_mac(mac, addr));
4760 return -EINVAL;
b481de9c 4761
deb09c43 4762 }
b481de9c 4763
6974e363 4764 mutex_lock(&priv->mutex);
bb8c093b 4765 iwl4965_scan_cancel_timeout(priv, 100);
6974e363
EG		 4766 mutex_unlock(&priv->mutex);
4767
4768 /* If we are getting WEP group key and we didn't receive any key mapping
4769 * so far, we are in legacy wep mode (group key only), otherwise we are
4770 * in 1X mode.
4771 * In legacy wep mode, we use another host command to the uCode */
5425e490 4772 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
6974e363
EG		 4773 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
4774 if (cmd == SET_KEY)
4775 is_default_wep_key = !priv->key_mapping_key;
4776 else
ccc038ab
EG		 4777 is_default_wep_key =
4778 (key->hw_key_idx == HW_KEY_DEFAULT);
6974e363 4779 }
052c4b9f 4780
b481de9c 4781 switch (cmd) {
deb09c43 4782 case SET_KEY:
6974e363
EG		 4783 if (is_default_wep_key)
4784 ret = iwl_set_default_wep_key(priv, key);
deb09c43 4785 else
7480513f 4786 ret = iwl_set_dynamic_key(priv, key, sta_id);
deb09c43
EG		 4787
4788 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
b481de9c
ZY		 4789 break;
4790 case DISABLE_KEY:
6974e363
EG		 4791 if (is_default_wep_key)
4792 ret = iwl_remove_default_wep_key(priv, key);
deb09c43 4793 else
3ec47732 4794 ret = iwl_remove_dynamic_key(priv, key, sta_id);
deb09c43
EG		 4795
4796 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
b481de9c
ZY		 4797 break;
4798 default:
deb09c43 4799 ret = -EINVAL;
b481de9c
ZY		 4800 }
4801
4802 IWL_DEBUG_MAC80211("leave\n");
b481de9c 4803
deb09c43 4804 return ret;
b481de9c
ZY		 4805}
4806
e100bb64 4807static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
b481de9c
ZY		 4808 const struct ieee80211_tx_queue_params *params)
4809{
c79dd5b5 4810 struct iwl_priv *priv = hw->priv;
b481de9c
ZY		 4811 unsigned long flags;
4812 int q;
b481de9c
ZY		 4813
4814 IWL_DEBUG_MAC80211("enter\n");
4815
fee1247a 4816 if (!iwl_is_ready_rf(priv)) {
b481de9c
ZY		 4817 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4818 return -EIO;
4819 }
4820
4821 if (queue >= AC_NUM) {
4822 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
4823 return 0;
4824 }
4825
b481de9c
ZY		 4826 if (!priv->qos_data.qos_enable) {
4827 priv->qos_data.qos_active = 0;
4828 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
4829 return 0;
4830 }
4831 q = AC_NUM - 1 - queue;
4832
4833 spin_lock_irqsave(&priv->lock, flags);
4834
4835 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
4836 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
4837 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
4838 priv->qos_data.def_qos_parm.ac[q].edca_txop =
3330d7be 4839 cpu_to_le16((params->txop * 32));
b481de9c
ZY		 4840
4841 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
4842 priv->qos_data.qos_active = 1;
4843
4844 spin_unlock_irqrestore(&priv->lock, flags);
4845
4846 mutex_lock(&priv->mutex);
4847 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
bb8c093b 4848 iwl4965_activate_qos(priv, 1);
3109ece1 4849 else if (priv->assoc_id && iwl_is_associated(priv))
bb8c093b 4850 iwl4965_activate_qos(priv, 0);
b481de9c
ZY		 4851
4852 mutex_unlock(&priv->mutex);
4853
b481de9c
ZY		 4854 IWL_DEBUG_MAC80211("leave\n");
4855 return 0;
4856}
4857
bb8c093b 4858static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
b481de9c
ZY		 4859 struct ieee80211_tx_queue_stats *stats)
4860{
c79dd5b5 4861 struct iwl_priv *priv = hw->priv;
b481de9c 4862 int i, avail;
16466903 4863 struct iwl_tx_queue *txq;
443cfd45 4864 struct iwl_queue *q;
b481de9c
ZY		 4865 unsigned long flags;
4866
4867 IWL_DEBUG_MAC80211("enter\n");
4868
fee1247a 4869 if (!iwl_is_ready_rf(priv)) {
b481de9c
ZY		 4870 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4871 return -EIO;
4872 }
4873
4874 spin_lock_irqsave(&priv->lock, flags);
4875
4876 for (i = 0; i < AC_NUM; i++) {
4877 txq = &priv->txq[i];
4878 q = &txq->q;
443cfd45 4879 avail = iwl_queue_space(q);
b481de9c 4880
57ffc589
JB		 4881 stats[i].len = q->n_window - avail;
4882 stats[i].limit = q->n_window - q->high_mark;
4883 stats[i].count = q->n_window;
b481de9c
ZY		 4884
4885 }
4886 spin_unlock_irqrestore(&priv->lock, flags);
4887
4888 IWL_DEBUG_MAC80211("leave\n");
4889
4890 return 0;
4891}
4892
bb8c093b 4893static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
b481de9c
ZY		 4894 struct ieee80211_low_level_stats *stats)
4895{
bf403db8
EK		 4896 struct iwl_priv *priv = hw->priv;
4897
4898 priv = hw->priv;
b481de9c
ZY		 4899 IWL_DEBUG_MAC80211("enter\n");
4900 IWL_DEBUG_MAC80211("leave\n");
4901
4902 return 0;
4903}
4904
bb8c093b 4905static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
b481de9c 4906{
bf403db8
EK		 4907 struct iwl_priv *priv;
4908
4909 priv = hw->priv;
b481de9c
ZY		 4910 IWL_DEBUG_MAC80211("enter\n");
4911 IWL_DEBUG_MAC80211("leave\n");
4912
4913 return 0;
4914}
4915
bb8c093b 4916static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
b481de9c 4917{
c79dd5b5 4918 struct iwl_priv *priv = hw->priv;
b481de9c
ZY		 4919 unsigned long flags;
4920
4921 mutex_lock(&priv->mutex);
4922 IWL_DEBUG_MAC80211("enter\n");
4923
4924 priv->lq_mngr.lq_ready = 0;
c8b0e6e1 4925#ifdef CONFIG_IWL4965_HT
b481de9c 4926 spin_lock_irqsave(&priv->lock, flags);
fd105e79 4927 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
b481de9c 4928 spin_unlock_irqrestore(&priv->lock, flags);
c8b0e6e1 4929#endif /* CONFIG_IWL4965_HT */
b481de9c 4930
c7de35cd 4931 iwl_reset_qos(priv);
b481de9c
ZY		 4932
4933 cancel_delayed_work(&priv->post_associate);
4934
4935 spin_lock_irqsave(&priv->lock, flags);
4936 priv->assoc_id = 0;
4937 priv->assoc_capability = 0;
b481de9c
ZY		 4938 priv->assoc_station_added = 0;
4939
4940 /* new association get rid of ibss beacon skb */
4941 if (priv->ibss_beacon)
4942 dev_kfree_skb(priv->ibss_beacon);
4943
4944 priv->ibss_beacon = NULL;
4945
4946 priv->beacon_int = priv->hw->conf.beacon_int;
3109ece1 4947 priv->timestamp = 0;
b481de9c
ZY		 4948 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
4949 priv->beacon_int = 0;
4950
4951 spin_unlock_irqrestore(&priv->lock, flags);
4952
fee1247a 4953 if (!iwl_is_ready_rf(priv)) {
fde3571f
MA		 4954 IWL_DEBUG_MAC80211("leave - not ready\n");
4955 mutex_unlock(&priv->mutex);
4956 return;
4957 }
4958
052c4b9f 4959 /* we are restarting association process
4960 * clear RXON_FILTER_ASSOC_MSK bit
4961 */
4962 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
bb8c093b 4963 iwl4965_scan_cancel_timeout(priv, 100);
052c4b9f 4964 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
bb8c093b 4965 iwl4965_commit_rxon(priv);
052c4b9f 4966 }
4967
5da4b55f
MA		 4968 iwl_power_update_mode(priv, 0);
4969
b481de9c
ZY		 4970 /* Per mac80211.h: This is only used in IBSS mode... */
4971 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
052c4b9f 4972
b481de9c
ZY		 4973 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
4974 mutex_unlock(&priv->mutex);
4975 return;
4976 }
4977
bb8c093b 4978 iwl4965_set_rate(priv);
b481de9c
ZY		 4979
4980 mutex_unlock(&priv->mutex);
4981
4982 IWL_DEBUG_MAC80211("leave\n");
b481de9c
ZY		 4983}
4984
e039fa4a 4985static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
b481de9c 4986{
c79dd5b5 4987 struct iwl_priv *priv = hw->priv;
b481de9c
ZY		 4988 unsigned long flags;
4989
4990 mutex_lock(&priv->mutex);
4991 IWL_DEBUG_MAC80211("enter\n");
4992
fee1247a 4993 if (!iwl_is_ready_rf(priv)) {
b481de9c
ZY		 4994 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4995 mutex_unlock(&priv->mutex);
4996 return -EIO;
4997 }
4998
4999 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
5000 IWL_DEBUG_MAC80211("leave - not IBSS\n");
5001 mutex_unlock(&priv->mutex);
5002 return -EIO;
5003 }
5004
5005 spin_lock_irqsave(&priv->lock, flags);
5006
5007 if (priv->ibss_beacon)
5008 dev_kfree_skb(priv->ibss_beacon);
5009
5010 priv->ibss_beacon = skb;
5011
5012 priv->assoc_id = 0;
5013
5014 IWL_DEBUG_MAC80211("leave\n");
5015 spin_unlock_irqrestore(&priv->lock, flags);
5016
c7de35cd 5017 iwl_reset_qos(priv);
b481de9c
ZY		 5018
5019 queue_work(priv->workqueue, &priv->post_associate.work);
5020
5021 mutex_unlock(&priv->mutex);
5022
5023 return 0;
5024}
5025
b481de9c
ZY		 5026/*****************************************************************************
5027 *
5028 * sysfs attributes
5029 *
5030 *****************************************************************************/
5031
0a6857e7 5032#ifdef CONFIG_IWLWIFI_DEBUG
b481de9c
ZY		 5033
5034/*
5035 * The following adds a new attribute to the sysfs representation
5036 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
5037 * used for controlling the debug level.
5038 *
5039 * See the level definitions in iwl for details.
5040 */
5041
8cf769c6
EK		 5042static ssize_t show_debug_level(struct device *d,
5043 struct device_attribute *attr, char *buf)
b481de9c 5044{
8cf769c6
EK		 5045 struct iwl_priv *priv = d->driver_data;
5046
5047 return sprintf(buf, "0x%08X\n", priv->debug_level);
b481de9c 5048}
8cf769c6
EK		 5049static ssize_t store_debug_level(struct device *d,
5050 struct device_attribute *attr,
b481de9c
ZY		 5051 const char *buf, size_t count)
5052{
8cf769c6 5053 struct iwl_priv *priv = d->driver_data;
b481de9c
ZY		 5054 char *p = (char *)buf;
5055 u32 val;
5056
5057 val = simple_strtoul(p, &p, 0);
5058 if (p == buf)
5059 printk(KERN_INFO DRV_NAME
5060 ": %s is not in hex or decimal form.\n", buf);
5061 else
8cf769c6 5062 priv->debug_level = val;
b481de9c
ZY		 5063
5064 return strnlen(buf, count);
5065}
5066
8cf769c6
EK		 5067static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
5068 show_debug_level, store_debug_level);
5069
b481de9c 5070
0a6857e7 5071#endif /* CONFIG_IWLWIFI_DEBUG */
b481de9c 5072
b481de9c 5073
bc6f59bc
TW		 5074static ssize_t show_version(struct device *d,
5075 struct device_attribute *attr, char *buf)
5076{
5077 struct iwl_priv *priv = d->driver_data;
885ba202 5078 struct iwl_alive_resp *palive = &priv->card_alive;
bc6f59bc
TW		 5079
5080 if (palive->is_valid)
5081 return sprintf(buf, "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
5082 "fw type: 0x%01X 0x%01X\n",
5083 palive->ucode_major, palive->ucode_minor,
5084 palive->sw_rev[0], palive->sw_rev[1],
5085 palive->ver_type, palive->ver_subtype);
5086
5087 else
5088 return sprintf(buf, "fw not loaded\n");
5089}
5090
5091static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
5092
b481de9c
ZY		 5093static ssize_t show_temperature(struct device *d,
5094 struct device_attribute *attr, char *buf)
5095{
c79dd5b5 5096 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
b481de9c 5097
fee1247a 5098 if (!iwl_is_alive(priv))
b481de9c
ZY		 5099 return -EAGAIN;
5100
bb8c093b 5101 return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
b481de9c
ZY		 5102}
5103
5104static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
5105
5106static ssize_t show_rs_window(struct device *d,
5107 struct device_attribute *attr,
5108 char *buf)
5109{
c79dd5b5 5110 struct iwl_priv *priv = d->driver_data;
bb8c093b 5111 return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
b481de9c
ZY		 5112}
5113static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
5114
5115static ssize_t show_tx_power(struct device *d,
5116 struct device_attribute *attr, char *buf)
5117{
c79dd5b5 5118 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
b481de9c
ZY		 5119 return sprintf(buf, "%d\n", priv->user_txpower_limit);
5120}
5121
5122static ssize_t store_tx_power(struct device *d,
5123 struct device_attribute *attr,
5124 const char *buf, size_t count)
5125{
c79dd5b5 5126 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
b481de9c
ZY		 5127 char *p = (char *)buf;
5128 u32 val;
5129
5130 val = simple_strtoul(p, &p, 10);
5131 if (p == buf)
5132 printk(KERN_INFO DRV_NAME
5133 ": %s is not in decimal form.\n", buf);
5134 else
bb8c093b 5135 iwl4965_hw_reg_set_txpower(priv, val);
b481de9c
ZY		 5136
5137 return count;
5138}
5139
5140static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
5141
5142static ssize_t show_flags(struct device *d,
5143 struct device_attribute *attr, char *buf)
5144{
c79dd5b5 5145 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
b481de9c
ZY		 5146
5147 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
5148}
5149
5150static ssize_t store_flags(struct device *d,
5151 struct device_attribute *attr,
5152 const char *buf, size_t count)
5153{
c79dd5b5 5154 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
b481de9c
ZY		 5155 u32 flags = simple_strtoul(buf, NULL, 0);
5156
5157 mutex_lock(&priv->mutex);
5158 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
5159 /* Cancel any currently running scans... */
bb8c093b 5160 if (iwl4965_scan_cancel_timeout(priv, 100))
b481de9c
ZY		 5161 IWL_WARNING("Could not cancel scan.\n");
5162 else {
5163 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
5164 flags);
5165 priv->staging_rxon.flags = cpu_to_le32(flags);
bb8c093b 5166 iwl4965_commit_rxon(priv);
b481de9c
ZY		 5167 }
5168 }
5169 mutex_unlock(&priv->mutex);
5170
5171 return count;
5172}
5173
5174static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
5175
5176static ssize_t show_filter_flags(struct device *d,
5177 struct device_attribute *attr, char *buf)
5178{
c79dd5b5 5179 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
b481de9c
ZY		 5180
5181 return sprintf(buf, "0x%04X\n",
5182 le32_to_cpu(priv->active_rxon.filter_flags));
5183}
5184
5185static ssize_t store_filter_flags(struct device *d,
5186 struct device_attribute *attr,
5187 const char *buf, size_t count)
5188{
c79dd5b5 5189 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
b481de9c
ZY		 5190 u32 filter_flags = simple_strtoul(buf, NULL, 0);
5191
5192 mutex_lock(&priv->mutex);
5193 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
5194 /* Cancel any currently running scans... */
bb8c093b 5195 if (iwl4965_scan_cancel_timeout(priv, 100))
b481de9c
ZY		 5196 IWL_WARNING("Could not cancel scan.\n");
5197 else {
5198 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
5199 "0x%04X\n", filter_flags);
5200 priv->staging_rxon.filter_flags =
5201 cpu_to_le32(filter_flags);
bb8c093b 5202 iwl4965_commit_rxon(priv);
b481de9c
ZY		 5203 }
5204 }
5205 mutex_unlock(&priv->mutex);
5206
5207 return count;
5208}
5209
5210static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
5211 store_filter_flags);
5212
c8b0e6e1 5213#ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
b481de9c
ZY		 5214
5215static ssize_t show_measurement(struct device *d,
5216 struct device_attribute *attr, char *buf)
5217{
c79dd5b5 5218 struct iwl_priv *priv = dev_get_drvdata(d);
bb8c093b 5219 struct iwl4965_spectrum_notification measure_report;
b481de9c
ZY		 5220 u32 size = sizeof(measure_report), len = 0, ofs = 0;
5221 u8 *data = (u8 *) & measure_report;
5222 unsigned long flags;
5223
5224 spin_lock_irqsave(&priv->lock, flags);
5225 if (!(priv->measurement_status & MEASUREMENT_READY)) {
5226 spin_unlock_irqrestore(&priv->lock, flags);
5227 return 0;
5228 }
5229 memcpy(&measure_report, &priv->measure_report, size);
5230 priv->measurement_status = 0;
5231 spin_unlock_irqrestore(&priv->lock, flags);
5232
5233 while (size && (PAGE_SIZE - len)) {
5234 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
5235 PAGE_SIZE - len, 1);
5236 len = strlen(buf);
5237 if (PAGE_SIZE - len)
5238 buf[len++] = '\n';
5239
5240 ofs += 16;
5241 size -= min(size, 16U);
5242 }
5243
5244 return len;
5245}
5246
5247static ssize_t store_measurement(struct device *d,
5248 struct device_attribute *attr,
5249 const char *buf, size_t count)
5250{
c79dd5b5 5251 struct iwl_priv *priv = dev_get_drvdata(d);
b481de9c
ZY		 5252 struct ieee80211_measurement_params params = {
5253 .channel = le16_to_cpu(priv->active_rxon.channel),
5254 .start_time = cpu_to_le64(priv->last_tsf),
5255 .duration = cpu_to_le16(1),
5256 };
5257 u8 type = IWL_MEASURE_BASIC;
5258 u8 buffer[32];
5259 u8 channel;
5260
5261 if (count) {
5262 char *p = buffer;
5263 strncpy(buffer, buf, min(sizeof(buffer), count));
5264 channel = simple_strtoul(p, NULL, 0);
5265 if (channel)
5266 params.channel = channel;
5267
5268 p = buffer;
5269 while (*p && *p != ' ')
5270 p++;
5271 if (*p)
5272 type = simple_strtoul(p + 1, NULL, 0);
5273 }
5274
5275 IWL_DEBUG_INFO("Invoking measurement of type %d on "
5276 "channel %d (for '%s')\n", type, params.channel, buf);
bb8c093b 5277 iwl4965_get_measurement(priv, &params, type);
b481de9c
ZY		 5278
5279 return count;
5280}
5281
5282static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
5283 show_measurement, store_measurement);
c8b0e6e1 5284#endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
b481de9c
ZY		 5285
5286static ssize_t store_retry_rate(struct device *d,
5287 struct device_attribute *attr,
5288 const char *buf, size_t count)
5289{
c79dd5b5 5290 struct iwl_priv *priv = dev_get_drvdata(d);
b481de9c
ZY		 5291
5292 priv->retry_rate = simple_strtoul(buf, NULL, 0);
5293 if (priv->retry_rate <= 0)
5294 priv->retry_rate = 1;
5295
5296 return count;
5297}
5298
5299static ssize_t show_retry_rate(struct device *d,
5300 struct device_attribute *attr, char *buf)
5301{
c79dd5b5 5302 struct iwl_priv *priv = dev_get_drvdata(d);
b481de9c
ZY		 5303 return sprintf(buf, "%d", priv->retry_rate);
5304}
5305
5306static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
5307 store_retry_rate);
5308
5309static ssize_t store_power_level(struct device *d,
5310 struct device_attribute *attr,
5311 const char *buf, size_t count)
5312{
c79dd5b5 5313 struct iwl_priv *priv = dev_get_drvdata(d);
b481de9c
ZY		 5314 int rc;
5315 int mode;
5316
5317 mode = simple_strtoul(buf, NULL, 0);
5318 mutex_lock(&priv->mutex);
5319
fee1247a 5320 if (!iwl_is_ready(priv)) {
b481de9c
ZY		 5321 rc = -EAGAIN;
5322 goto out;
5323 }
5324
5da4b55f
MA		 5325 rc = iwl_power_set_user_mode(priv, mode);
5326 if (rc) {
5327 IWL_DEBUG_MAC80211("failed setting power mode.\n");
5328 goto out;
b481de9c 5329 }
b481de9c
ZY		 5330 rc = count;
5331
5332 out:
5333 mutex_unlock(&priv->mutex);
5334 return rc;
5335}
5336
5337#define MAX_WX_STRING 80
5338
5339/* Values are in microsecond */
5340static const s32 timeout_duration[] = {
5341 350000,
5342 250000,
5343 75000,
5344 37000,
5345 25000,
5346};
5347static const s32 period_duration[] = {
5348 400000,
5349 700000,
5350 1000000,
5351 1000000,
5352 1000000
5353};
5354
5355static ssize_t show_power_level(struct device *d,
5356 struct device_attribute *attr, char *buf)
5357{
c79dd5b5 5358 struct iwl_priv *priv = dev_get_drvdata(d);
5da4b55f 5359 int level = priv->power_data.power_mode;
b481de9c
ZY		 5360 char *p = buf;
5361
5362 p += sprintf(p, "%d ", level);
5363 switch (level) {
5364 case IWL_POWER_MODE_CAM:
5365 case IWL_POWER_AC:
5366 p += sprintf(p, "(AC)");
5367 break;
5368 case IWL_POWER_BATTERY:
5369 p += sprintf(p, "(BATTERY)");
5370 break;
5371 default:
5372 p += sprintf(p,
5373 "(Timeout %dms, Period %dms)",
5374 timeout_duration[level - 1] / 1000,
5375 period_duration[level - 1] / 1000);
5376 }
5da4b55f 5377/*
b481de9c
ZY		 5378 if (!(priv->power_mode & IWL_POWER_ENABLED))
5379 p += sprintf(p, " OFF\n");
5380 else
5381 p += sprintf(p, " \n");
5da4b55f
MA		 5382*/
5383 p += sprintf(p, " \n");
b481de9c 5384 return (p - buf + 1);
b481de9c
ZY		 5385}
5386
5387static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
5388 store_power_level);
5389
5390static ssize_t show_channels(struct device *d,
5391 struct device_attribute *attr, char *buf)
5392{
8318d78a
JB		 5393 /* all this shit doesn't belong into sysfs anyway */
5394 return 0;
b481de9c
ZY		 5395}
5396
5397static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
5398
5399static ssize_t show_statistics(struct device *d,
5400 struct device_attribute *attr, char *buf)
5401{
c79dd5b5 5402 struct iwl_priv *priv = dev_get_drvdata(d);
bb8c093b 5403 u32 size = sizeof(struct iwl4965_notif_statistics);
b481de9c
ZY		 5404 u32 len = 0, ofs = 0;
5405 u8 *data = (u8 *) & priv->statistics;
5406 int rc = 0;
5407
fee1247a 5408 if (!iwl_is_alive(priv))
b481de9c
ZY		 5409 return -EAGAIN;
5410
5411 mutex_lock(&priv->mutex);
49ea8596 5412 rc = iwl_send_statistics_request(priv, 0);
b481de9c
ZY		 5413 mutex_unlock(&priv->mutex);
5414
5415 if (rc) {
5416 len = sprintf(buf,
5417 "Error sending statistics request: 0x%08X\n", rc);
5418 return len;
5419 }
5420
5421 while (size && (PAGE_SIZE - len)) {
5422 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
5423 PAGE_SIZE - len, 1);
5424 len = strlen(buf);
5425 if (PAGE_SIZE - len)
5426 buf[len++] = '\n';
5427
5428 ofs += 16;
5429 size -= min(size, 16U);
5430 }
5431
5432 return len;
5433}
5434
5435static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
5436
b481de9c
ZY		 5437static ssize_t show_status(struct device *d,
5438 struct device_attribute *attr, char *buf)
5439{
c79dd5b5 5440 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
fee1247a 5441 if (!iwl_is_alive(priv))
b481de9c
ZY		 5442 return -EAGAIN;
5443 return sprintf(buf, "0x%08x\n", (int)priv->status);
5444}
5445
5446static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
5447
b481de9c
ZY		 5448/*****************************************************************************
5449 *
5450 * driver setup and teardown
5451 *
5452 *****************************************************************************/
5453
c79dd5b5 5454static void iwl4965_setup_deferred_work(struct iwl_priv *priv)
b481de9c
ZY		 5455{
5456 priv->workqueue = create_workqueue(DRV_NAME);
5457
5458 init_waitqueue_head(&priv->wait_command_queue);
5459
bb8c093b
CH		 5460 INIT_WORK(&priv->up, iwl4965_bg_up);
5461 INIT_WORK(&priv->restart, iwl4965_bg_restart);
5462 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
5463 INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
5464 INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
5465 INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
5466 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
5467 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4419e39b 5468 INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
bb8c093b 5469 INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
4a4a9e81
TW		 5470 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
5471 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
bb8c093b
CH		 5472 INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
5473
5474 iwl4965_hw_setup_deferred_work(priv);
b481de9c
ZY		 5475
5476 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
bb8c093b 5477 iwl4965_irq_tasklet, (unsigned long)priv);
b481de9c
ZY		 5478}
5479
c79dd5b5 5480static void iwl4965_cancel_deferred_work(struct iwl_priv *priv)
b481de9c 5481{
bb8c093b 5482 iwl4965_hw_cancel_deferred_work(priv);
b481de9c 5483
3ae6a054 5484 cancel_delayed_work_sync(&priv->init_alive_start);
b481de9c
ZY		 5485 cancel_delayed_work(&priv->scan_check);
5486 cancel_delayed_work(&priv->alive_start);
5487 cancel_delayed_work(&priv->post_associate);
5488 cancel_work_sync(&priv->beacon_update);
5489}
5490
bb8c093b 5491static struct attribute *iwl4965_sysfs_entries[] = {
b481de9c 5492 &dev_attr_channels.attr,
b481de9c
ZY		 5493 &dev_attr_flags.attr,
5494 &dev_attr_filter_flags.attr,
c8b0e6e1 5495#ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
b481de9c
ZY		 5496 &dev_attr_measurement.attr,
5497#endif
5498 &dev_attr_power_level.attr,
5499 &dev_attr_retry_rate.attr,
b481de9c
ZY		 5500 &dev_attr_rs_window.attr,
5501 &dev_attr_statistics.attr,
5502 &dev_attr_status.attr,
5503 &dev_attr_temperature.attr,
b481de9c 5504 &dev_attr_tx_power.attr,
8cf769c6
EK		 5505#ifdef CONFIG_IWLWIFI_DEBUG
5506 &dev_attr_debug_level.attr,
5507#endif
bc6f59bc 5508 &dev_attr_version.attr,
b481de9c
ZY		 5509
5510 NULL
5511};
5512
bb8c093b 5513static struct attribute_group iwl4965_attribute_group = {
b481de9c 5514 .name = NULL, /* put in device directory */
bb8c093b 5515 .attrs = iwl4965_sysfs_entries,
b481de9c
ZY		 5516};
5517
bb8c093b
CH		 5518static struct ieee80211_ops iwl4965_hw_ops = {
5519 .tx = iwl4965_mac_tx,
5520 .start = iwl4965_mac_start,
5521 .stop = iwl4965_mac_stop,
5522 .add_interface = iwl4965_mac_add_interface,
5523 .remove_interface = iwl4965_mac_remove_interface,
5524 .config = iwl4965_mac_config,
5525 .config_interface = iwl4965_mac_config_interface,
5526 .configure_filter = iwl4965_configure_filter,
5527 .set_key = iwl4965_mac_set_key,
ab885f8c 5528 .update_tkip_key = iwl4965_mac_update_tkip_key,
bb8c093b
CH		 5529 .get_stats = iwl4965_mac_get_stats,
5530 .get_tx_stats = iwl4965_mac_get_tx_stats,
5531 .conf_tx = iwl4965_mac_conf_tx,
5532 .get_tsf = iwl4965_mac_get_tsf,
5533 .reset_tsf = iwl4965_mac_reset_tsf,
5534 .beacon_update = iwl4965_mac_beacon_update,
471b3efd 5535 .bss_info_changed = iwl4965_bss_info_changed,
c8b0e6e1 5536#ifdef CONFIG_IWL4965_HT
9ab46173 5537 .ampdu_action = iwl4965_mac_ampdu_action,
c8b0e6e1 5538#endif /* CONFIG_IWL4965_HT */
bb8c093b 5539 .hw_scan = iwl4965_mac_hw_scan
b481de9c
ZY		 5540};
5541
bb8c093b 5542static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
b481de9c
ZY		 5543{
5544 int err = 0;
c79dd5b5 5545 struct iwl_priv *priv;
b481de9c 5546 struct ieee80211_hw *hw;
82b9a121 5547 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
0359facc 5548 unsigned long flags;
5a66926a 5549 DECLARE_MAC_BUF(mac);
b481de9c 5550
316c30d9
AK		 5551 /************************
5552 * 1. Allocating HW data
5553 ************************/
5554
6440adb5
CB		 5555 /* Disabling hardware scan means that mac80211 will perform scans
5556 * "the hard way", rather than using device's scan. */
1ea87396 5557 if (cfg->mod_params->disable_hw_scan) {
bf403db8
EK		 5558 if (cfg->mod_params->debug & IWL_DL_INFO)
5559 dev_printk(KERN_DEBUG, &(pdev->dev),
5560 "Disabling hw_scan\n");
bb8c093b 5561 iwl4965_hw_ops.hw_scan = NULL;
b481de9c
ZY		 5562 }
5563
1d0a082d
AK		 5564 hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
5565 if (!hw) {
b481de9c
ZY		 5566 err = -ENOMEM;
5567 goto out;
5568 }
1d0a082d
AK		 5569 priv = hw->priv;
5570 /* At this point both hw and priv are allocated. */
5571
b481de9c
ZY		 5572 SET_IEEE80211_DEV(hw, &pdev->dev);
5573
5574 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
82b9a121 5575 priv->cfg = cfg;
b481de9c 5576 priv->pci_dev = pdev;
316c30d9 5577
0a6857e7 5578#ifdef CONFIG_IWLWIFI_DEBUG
bf403db8 5579 priv->debug_level = priv->cfg->mod_params->debug;
b481de9c
ZY		 5580 atomic_set(&priv->restrict_refcnt, 0);
5581#endif
b481de9c 5582
316c30d9
AK		 5583 /**************************
5584 * 2. Initializing PCI bus
5585 **************************/
5586 if (pci_enable_device(pdev)) {
5587 err = -ENODEV;
5588 goto out_ieee80211_free_hw;
5589 }
5590
5591 pci_set_master(pdev);
5592
cc2a8ea8 5593 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
316c30d9 5594 if (!err)
cc2a8ea8
RR		 5595 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
5596 if (err) {
5597 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
5598 if (!err)
5599 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
5600 /* both attempts failed: */
316c30d9 5601 if (err) {
cc2a8ea8
RR		 5602 printk(KERN_WARNING "%s: No suitable DMA available.\n",
5603 DRV_NAME);
316c30d9 5604 goto out_pci_disable_device;
cc2a8ea8 5605 }
316c30d9
AK		 5606 }
5607
5608 err = pci_request_regions(pdev, DRV_NAME);
5609 if (err)
5610 goto out_pci_disable_device;
5611
5612 pci_set_drvdata(pdev, priv);
5613
5614 /* We disable the RETRY_TIMEOUT register (0x41) to keep
5615 * PCI Tx retries from interfering with C3 CPU state */
5616 pci_write_config_byte(pdev, 0x41, 0x00);
5617
5618 /***********************
5619 * 3. Read REV register
5620 ***********************/
5621 priv->hw_base = pci_iomap(pdev, 0, 0);
5622 if (!priv->hw_base) {
5623 err = -ENODEV;
5624 goto out_pci_release_regions;
5625 }
5626
5627 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
5628 (unsigned long long) pci_resource_len(pdev, 0));
5629 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
5630
b661c819 5631 iwl_hw_detect(priv);
316c30d9 5632 printk(KERN_INFO DRV_NAME
b661c819
TW		 5633 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
5634 priv->cfg->name, priv->hw_rev);
316c30d9 5635
91238714
TW		 5636 /* amp init */
5637 err = priv->cfg->ops->lib->apm_ops.init(priv);
316c30d9 5638 if (err < 0) {
91238714 5639 IWL_DEBUG_INFO("Failed to init APMG\n");
316c30d9
AK		 5640 goto out_iounmap;
5641 }
91238714
TW		 5642 /*****************
5643 * 4. Read EEPROM
5644 *****************/
316c30d9
AK		 5645 /* Read the EEPROM */
5646 err = iwl_eeprom_init(priv);
5647 if (err) {
5648 IWL_ERROR("Unable to init EEPROM\n");
5649 goto out_iounmap;
5650 }
8614f360
TW		 5651 err = iwl_eeprom_check_version(priv);
5652 if (err)
5653 goto out_iounmap;
5654
02883017 5655 /* extract MAC Address */
316c30d9
AK		 5656 iwl_eeprom_get_mac(priv, priv->mac_addr);
5657 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
5658 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
5659
5660 /************************
5661 * 5. Setup HW constants
5662 ************************/
5663 /* Device-specific setup */
5425e490
TW		 5664 if (priv->cfg->ops->lib->set_hw_params(priv)) {
5665 IWL_ERROR("failed to set hw parameters\n");
073d3f5f 5666 goto out_free_eeprom;
316c30d9
AK		 5667 }
5668
5669 /*******************
6ba87956 5670 * 6. Setup priv
316c30d9 5671 *******************/
b481de9c 5672
6ba87956 5673 err = iwl_init_drv(priv);
bf85ea4f 5674 if (err)
399f4900 5675 goto out_free_eeprom;
bf85ea4f 5676 /* At this point both hw and priv are initialized. */
316c30d9
AK		 5677
5678 /**********************************
5679 * 7. Initialize module parameters
5680 **********************************/
5681
5682 /* Disable radio (SW RF KILL) via parameter when loading driver */
1ea87396 5683 if (priv->cfg->mod_params->disable) {
316c30d9
AK		 5684 set_bit(STATUS_RF_KILL_SW, &priv->status);
5685 IWL_DEBUG_INFO("Radio disabled.\n");
5686 }
5687
316c30d9
AK		 5688 /********************
5689 * 8. Setup services
5690 ********************/
0359facc 5691 spin_lock_irqsave(&priv->lock, flags);
316c30d9 5692 iwl4965_disable_interrupts(priv);
0359facc 5693 spin_unlock_irqrestore(&priv->lock, flags);
316c30d9
AK		 5694
5695 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5696 if (err) {
5697 IWL_ERROR("failed to create sysfs device attributes\n");
6ba87956 5698 goto out_uninit_drv;
316c30d9
AK		 5699 }
5700
316c30d9
AK		 5701
5702 iwl4965_setup_deferred_work(priv);
5703 iwl4965_setup_rx_handlers(priv);
5704
5705 /********************
5706 * 9. Conclude
5707 ********************/
5a66926a
ZY		 5708 pci_save_state(pdev);
5709 pci_disable_device(pdev);
b481de9c 5710
6ba87956
TW		 5711 /**********************************
5712 * 10. Setup and register mac80211
5713 **********************************/
5714
5715 err = iwl_setup_mac(priv);
5716 if (err)
5717 goto out_remove_sysfs;
5718
5719 err = iwl_dbgfs_register(priv, DRV_NAME);
5720 if (err)
5721 IWL_ERROR("failed to create debugfs files\n");
5722
c8381fdc
MA		 5723 /* notify iwlcore to init */
5724 iwlcore_low_level_notify(priv, IWLCORE_INIT_EVT);
b481de9c
ZY		 5725 return 0;
5726
316c30d9
AK		 5727 out_remove_sysfs:
5728 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
6ba87956
TW		 5729 out_uninit_drv:
5730 iwl_uninit_drv(priv);
073d3f5f
TW		 5731 out_free_eeprom:
5732 iwl_eeprom_free(priv);
b481de9c
ZY		 5733 out_iounmap:
5734 pci_iounmap(pdev, priv->hw_base);
5735 out_pci_release_regions:
5736 pci_release_regions(pdev);
316c30d9 5737 pci_set_drvdata(pdev, NULL);
b481de9c
ZY		 5738 out_pci_disable_device:
5739 pci_disable_device(pdev);
b481de9c
ZY		 5740 out_ieee80211_free_hw:
5741 ieee80211_free_hw(priv->hw);
5742 out:
5743 return err;
5744}
5745
c83dbf68 5746static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
b481de9c 5747{
c79dd5b5 5748 struct iwl_priv *priv = pci_get_drvdata(pdev);
b481de9c
ZY		 5749 struct list_head *p, *q;
5750 int i;
0359facc 5751 unsigned long flags;
b481de9c
ZY		 5752
5753 if (!priv)
5754 return;
5755
5756 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
5757
c4f55232
RR		 5758 if (priv->mac80211_registered) {
5759 ieee80211_unregister_hw(priv->hw);
5760 priv->mac80211_registered = 0;
5761 }
5762
b481de9c 5763 set_bit(STATUS_EXIT_PENDING, &priv->status);
b24d22b1 5764
bb8c093b 5765 iwl4965_down(priv);
b481de9c 5766
0359facc
MA		 5767 /* make sure we flush any pending irq or
5768 * tasklet for the driver
5769 */
5770 spin_lock_irqsave(&priv->lock, flags);
5771 iwl4965_disable_interrupts(priv);
5772 spin_unlock_irqrestore(&priv->lock, flags);
5773
5774 iwl_synchronize_irq(priv);
5775
b481de9c
ZY		 5776 /* Free MAC hash list for ADHOC */
5777 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
5778 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
5779 list_del(p);
bb8c093b 5780 kfree(list_entry(p, struct iwl4965_ibss_seq, list));
b481de9c
ZY		 5781 }
5782 }
5783
c8381fdc 5784 iwlcore_low_level_notify(priv, IWLCORE_REMOVE_EVT);
712b6cf5 5785 iwl_dbgfs_unregister(priv);
bb8c093b 5786 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
b481de9c 5787
bb8c093b 5788 iwl4965_dealloc_ucode_pci(priv);
b481de9c
ZY		 5789
5790 if (priv->rxq.bd)
a55360e4 5791 iwl_rx_queue_free(priv, &priv->rxq);
1053d35f 5792 iwl_hw_txq_ctx_free(priv);
b481de9c 5793
bf85ea4f 5794 iwlcore_clear_stations_table(priv);
073d3f5f 5795 iwl_eeprom_free(priv);
b481de9c 5796
b481de9c 5797
948c171c
MA		 5798 /*netif_stop_queue(dev); */
5799 flush_workqueue(priv->workqueue);
5800
bb8c093b 5801 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
b481de9c
ZY		 5802 * priv->workqueue... so we can't take down the workqueue
5803 * until now... */
5804 destroy_workqueue(priv->workqueue);
5805 priv->workqueue = NULL;
5806
b481de9c
ZY		 5807 pci_iounmap(pdev, priv->hw_base);
5808 pci_release_regions(pdev);
5809 pci_disable_device(pdev);
5810 pci_set_drvdata(pdev, NULL);
5811
6ba87956 5812 iwl_uninit_drv(priv);
b481de9c
ZY		 5813
5814 if (priv->ibss_beacon)
5815 dev_kfree_skb(priv->ibss_beacon);
5816
5817 ieee80211_free_hw(priv->hw);
5818}
5819
5820#ifdef CONFIG_PM
5821
bb8c093b 5822static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
b481de9c 5823{
c79dd5b5 5824 struct iwl_priv *priv = pci_get_drvdata(pdev);
b481de9c 5825
e655b9f0
ZY		 5826 if (priv->is_open) {
5827 set_bit(STATUS_IN_SUSPEND, &priv->status);
5828 iwl4965_mac_stop(priv->hw);
5829 priv->is_open = 1;
5830 }
b481de9c 5831
b481de9c
ZY		 5832 pci_set_power_state(pdev, PCI_D3hot);
5833
b481de9c
ZY		 5834 return 0;
5835}
5836
bb8c093b 5837static int iwl4965_pci_resume(struct pci_dev *pdev)
b481de9c 5838{
c79dd5b5 5839 struct iwl_priv *priv = pci_get_drvdata(pdev);
b481de9c 5840
b481de9c 5841 pci_set_power_state(pdev, PCI_D0);
b481de9c 5842
e655b9f0
ZY		 5843 if (priv->is_open)
5844 iwl4965_mac_start(priv->hw);
b481de9c 5845
e655b9f0 5846 clear_bit(STATUS_IN_SUSPEND, &priv->status);
b481de9c
ZY		 5847 return 0;
5848}
5849
5850#endif /* CONFIG_PM */
5851
5852/*****************************************************************************
5853 *
5854 * driver and module entry point
5855 *
5856 *****************************************************************************/
5857
fed9017e
RR		 5858/* Hardware specific file defines the PCI IDs table for that hardware module */
5859static struct pci_device_id iwl_hw_card_ids[] = {
5860 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
5861 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
5a6a256e
TW		 5862#ifdef CONFIG_IWL5000
5863 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
5864 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
5865 {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
5866#endif /* CONFIG_IWL5000 */
fed9017e
RR		 5867 {0}
5868};
5869MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
5870
5871static struct pci_driver iwl_driver = {
b481de9c 5872 .name = DRV_NAME,
fed9017e 5873 .id_table = iwl_hw_card_ids,
bb8c093b
CH		 5874 .probe = iwl4965_pci_probe,
5875 .remove = __devexit_p(iwl4965_pci_remove),
b481de9c 5876#ifdef CONFIG_PM
bb8c093b
CH		 5877 .suspend = iwl4965_pci_suspend,
5878 .resume = iwl4965_pci_resume,
b481de9c
ZY		 5879#endif
5880};
5881
bb8c093b 5882static int __init iwl4965_init(void)
b481de9c
ZY		 5883{
5884
5885 int ret;
5886 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
5887 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
897e1cf2
RC		 5888
5889 ret = iwl4965_rate_control_register();
5890 if (ret) {
5891 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
5892 return ret;
5893 }
5894
fed9017e 5895 ret = pci_register_driver(&iwl_driver);
b481de9c
ZY		 5896 if (ret) {
5897 IWL_ERROR("Unable to initialize PCI module\n");
897e1cf2 5898 goto error_register;
b481de9c 5899 }
b481de9c
ZY		 5900
5901 return ret;
897e1cf2 5902
897e1cf2
RC		 5903error_register:
5904 iwl4965_rate_control_unregister();
5905 return ret;
b481de9c
ZY		 5906}
5907
bb8c093b 5908static void __exit iwl4965_exit(void)
b481de9c 5909{
fed9017e 5910 pci_unregister_driver(&iwl_driver);
897e1cf2 5911 iwl4965_rate_control_unregister();
b481de9c
ZY		 5912}
5913
bb8c093b
CH		 5914module_exit(iwl4965_exit);
5915module_init(iwl4965_init);
Linux kernel - Deliverables
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