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iwlwifi: fix resart flow after fw error
[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
bb8c093b 90static int iwl4965_is_empty_essid(const char *essid, int essid_len)
b481de9c
ZY		 91{
92 /* Single white space is for Linksys APs */
93 if (essid_len == 1 && essid[0] == ' ')
94 return 1;
95
96 /* Otherwise, if the entire essid is 0, we assume it is hidden */
97 while (essid_len) {
98 essid_len--;
99 if (essid[essid_len] != '\0')
100 return 0;
101 }
102
103 return 1;
104}
105
bb8c093b 106static const char *iwl4965_escape_essid(const char *essid, u8 essid_len)
b481de9c
ZY		 107{
108 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
109 const char *s = essid;
110 char *d = escaped;
111
bb8c093b 112 if (iwl4965_is_empty_essid(essid, essid_len)) {
b481de9c
ZY		 113 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
114 return escaped;
115 }
116
117 essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
118 while (essid_len--) {
119 if (*s == '\0') {
120 *d++ = '\\';
121 *d++ = '0';
122 s++;
123 } else
124 *d++ = *s++;
125 }
126 *d = '\0';
127 return escaped;
128}
129
b481de9c 130/*************** STATION TABLE MANAGEMENT ****
9fbab516 131 * mac80211 should be examined to determine if sta_info is duplicating
b481de9c
ZY		 132 * the functionality provided here
133 */
134
135/**************************************************************/
136
b481de9c 137
b481de9c 138
deb09c43
EG		 139static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
140{
c1adf9fb 141 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
deb09c43
EG		 142
143 if (hw_decrypt)
144 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
145 else
146 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
147
148}
149
b481de9c 150/**
bb8c093b 151 * iwl4965_check_rxon_cmd - validate RXON structure is valid
b481de9c
ZY		 152 *
153 * NOTE: This is really only useful during development and can eventually
154 * be #ifdef'd out once the driver is stable and folks aren't actively
155 * making changes
156 */
c1adf9fb 157static int iwl4965_check_rxon_cmd(struct iwl_rxon_cmd *rxon)
b481de9c
ZY		 158{
159 int error = 0;
160 int counter = 1;
161
162 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
163 error |= le32_to_cpu(rxon->flags &
164 (RXON_FLG_TGJ_NARROW_BAND_MSK |
165 RXON_FLG_RADAR_DETECT_MSK));
166 if (error)
167 IWL_WARNING("check 24G fields %d | %d\n",
168 counter++, error);
169 } else {
170 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
171 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
172 if (error)
173 IWL_WARNING("check 52 fields %d | %d\n",
174 counter++, error);
175 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
176 if (error)
177 IWL_WARNING("check 52 CCK %d | %d\n",
178 counter++, error);
179 }
180 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
181 if (error)
182 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
183
184 /* make sure basic rates 6Mbps and 1Mbps are supported */
185 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
186 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
187 if (error)
188 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
189
190 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
191 if (error)
192 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
193
194 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
195 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
196 if (error)
197 IWL_WARNING("check CCK and short slot %d | %d\n",
198 counter++, error);
199
200 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
201 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
202 if (error)
203 IWL_WARNING("check CCK & auto detect %d | %d\n",
204 counter++, error);
205
206 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
207 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
208 if (error)
209 IWL_WARNING("check TGG and auto detect %d | %d\n",
210 counter++, error);
211
212 if (error)
213 IWL_WARNING("Tuning to channel %d\n",
214 le16_to_cpu(rxon->channel));
215
216 if (error) {
bb8c093b 217 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
b481de9c
ZY		 218 return -1;
219 }
220 return 0;
221}
222
223/**
9fbab516 224 * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
01ebd063 225 * @priv: staging_rxon is compared to active_rxon
b481de9c 226 *
9fbab516
BC		 227 * If the RXON structure is changing enough to require a new tune,
228 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
229 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
b481de9c 230 */
c79dd5b5 231static int iwl4965_full_rxon_required(struct iwl_priv *priv)
b481de9c
ZY		 232{
233
234 /* These items are only settable from the full RXON command */
235 if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
236 compare_ether_addr(priv->staging_rxon.bssid_addr,
237 priv->active_rxon.bssid_addr) ||
238 compare_ether_addr(priv->staging_rxon.node_addr,
239 priv->active_rxon.node_addr) ||
240 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
241 priv->active_rxon.wlap_bssid_addr) ||
242 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
243 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
244 (priv->staging_rxon.air_propagation !=
245 priv->active_rxon.air_propagation) ||
246 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
247 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
248 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
249 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
250 (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
251 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
252 return 1;
253
254 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
255 * be updated with the RXON_ASSOC command -- however only some
256 * flag transitions are allowed using RXON_ASSOC */
257
258 /* Check if we are not switching bands */
259 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
260 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
261 return 1;
262
263 /* Check if we are switching association toggle */
264 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
265 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
266 return 1;
267
268 return 0;
269}
270
b481de9c 271/**
bb8c093b 272 * iwl4965_commit_rxon - commit staging_rxon to hardware
b481de9c 273 *
01ebd063 274 * The RXON command in staging_rxon is committed to the hardware and
b481de9c
ZY		 275 * the active_rxon structure is updated with the new data. This
276 * function correctly transitions out of the RXON_ASSOC_MSK state if
277 * a HW tune is required based on the RXON structure changes.
278 */
c79dd5b5 279static int iwl4965_commit_rxon(struct iwl_priv *priv)
b481de9c
ZY		 280{
281 /* cast away the const for active_rxon in this function */
c1adf9fb 282 struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
0795af57 283 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 284 int rc = 0;
285
fee1247a 286 if (!iwl_is_alive(priv))
b481de9c
ZY		 287 return -1;
288
289 /* always get timestamp with Rx frame */
290 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
291
bb8c093b 292 rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
b481de9c
ZY		 293 if (rc) {
294 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
295 return -EINVAL;
296 }
297
298 /* If we don't need to send a full RXON, we can use
bb8c093b 299 * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
b481de9c 300 * and other flags for the current radio configuration. */
bb8c093b 301 if (!iwl4965_full_rxon_required(priv)) {
7e8c519e 302 rc = iwl_send_rxon_assoc(priv);
b481de9c
ZY		 303 if (rc) {
304 IWL_ERROR("Error setting RXON_ASSOC "
305 "configuration (%d).\n", rc);
306 return rc;
307 }
308
309 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
310
311 return 0;
312 }
313
314 /* station table will be cleared */
315 priv->assoc_station_added = 0;
316
b481de9c
ZY		 317 /* If we are currently associated and the new config requires
318 * an RXON_ASSOC and the new config wants the associated mask enabled,
319 * we must clear the associated from the active configuration
320 * before we apply the new config */
3109ece1 321 if (iwl_is_associated(priv) &&
b481de9c
ZY		 322 (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
323 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
324 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
325
857485c0 326 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
c1adf9fb 327 sizeof(struct iwl_rxon_cmd),
b481de9c
ZY		 328 &priv->active_rxon);
329
330 /* If the mask clearing failed then we set
331 * active_rxon back to what it was previously */
332 if (rc) {
333 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
334 IWL_ERROR("Error clearing ASSOC_MSK on current "
335 "configuration (%d).\n", rc);
336 return rc;
337 }
b481de9c
ZY		 338 }
339
340 IWL_DEBUG_INFO("Sending RXON\n"
341 "* with%s RXON_FILTER_ASSOC_MSK\n"
342 "* channel = %d\n"
0795af57 343 "* bssid = %s\n",
b481de9c
ZY		 344 ((priv->staging_rxon.filter_flags &
345 RXON_FILTER_ASSOC_MSK) ? "" : "out"),
346 le16_to_cpu(priv->staging_rxon.channel),
0795af57 347 print_mac(mac, priv->staging_rxon.bssid_addr));
b481de9c 348
099b40b7 349 iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
b481de9c 350 /* Apply the new configuration */
857485c0 351 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
c1adf9fb 352 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
b481de9c
ZY		 353 if (rc) {
354 IWL_ERROR("Error setting new configuration (%d).\n", rc);
355 return rc;
356 }
357
7a999bf0 358 iwl_remove_station(priv, iwl_bcast_addr, 0);
bf85ea4f 359 iwlcore_clear_stations_table(priv);
556f8db7 360
b481de9c
ZY		 361 if (!priv->error_recovering)
362 priv->start_calib = 0;
363
f0832f13 364 iwl_init_sensitivity(priv);
b481de9c
ZY		 365
366 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
367
368 /* If we issue a new RXON command which required a tune then we must
369 * send a new TXPOWER command or we won't be able to Tx any frames */
bb8c093b 370 rc = iwl4965_hw_reg_send_txpower(priv);
b481de9c
ZY		 371 if (rc) {
372 IWL_ERROR("Error setting Tx power (%d).\n", rc);
373 return rc;
374 }
375
376 /* Add the broadcast address so we can send broadcast frames */
4f40e4d9 377 if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
b481de9c
ZY		 378 IWL_INVALID_STATION) {
379 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
380 return -EIO;
381 }
382
383 /* If we have set the ASSOC_MSK and we are in BSS mode then
384 * add the IWL_AP_ID to the station rate table */
3109ece1 385 if (iwl_is_associated(priv) &&
b481de9c 386 (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
4f40e4d9 387 if (iwl_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
b481de9c
ZY		 388 == IWL_INVALID_STATION) {
389 IWL_ERROR("Error adding AP address for transmit.\n");
390 return -EIO;
391 }
392 priv->assoc_station_added = 1;
6974e363
EG		 393 if (priv->default_wep_key &&
394 iwl_send_static_wepkey_cmd(priv, 0))
395 IWL_ERROR("Could not send WEP static key.\n");
b481de9c
ZY		 396 }
397
398 return 0;
399}
400
5da4b55f
MA		 401void iwl4965_update_chain_flags(struct iwl_priv *priv)
402{
403
c7de35cd 404 iwl_set_rxon_chain(priv);
5da4b55f
MA		 405 iwl4965_commit_rxon(priv);
406}
407
c79dd5b5 408static int iwl4965_send_bt_config(struct iwl_priv *priv)
b481de9c 409{
bb8c093b 410 struct iwl4965_bt_cmd bt_cmd = {
b481de9c
ZY		 411 .flags = 3,
412 .lead_time = 0xAA,
413 .max_kill = 1,
414 .kill_ack_mask = 0,
415 .kill_cts_mask = 0,
416 };
417
857485c0 418 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
bb8c093b 419 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
b481de9c
ZY		 420}
421
c79dd5b5 422static int iwl4965_send_scan_abort(struct iwl_priv *priv)
b481de9c 423{
db11d634
TW		 424 int ret = 0;
425 struct iwl_rx_packet *res;
857485c0 426 struct iwl_host_cmd cmd = {
b481de9c
ZY		 427 .id = REPLY_SCAN_ABORT_CMD,
428 .meta.flags = CMD_WANT_SKB,
429 };
430
431 /* If there isn't a scan actively going on in the hardware
432 * then we are in between scan bands and not actually
433 * actively scanning, so don't send the abort command */
434 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
435 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
436 return 0;
437 }
438
db11d634
TW		 439 ret = iwl_send_cmd_sync(priv, &cmd);
440 if (ret) {
b481de9c 441 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
db11d634 442 return ret;
b481de9c
ZY		 443 }
444
db11d634 445 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
b481de9c
ZY		 446 if (res->u.status != CAN_ABORT_STATUS) {
447 /* The scan abort will return 1 for success or
448 * 2 for "failure". A failure condition can be
449 * due to simply not being in an active scan which
450 * can occur if we send the scan abort before we
451 * the microcode has notified us that a scan is
452 * completed. */
453 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
454 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
455 clear_bit(STATUS_SCAN_HW, &priv->status);
456 }
457
458 dev_kfree_skb_any(cmd.meta.u.skb);
459
db11d634 460 return ret;
b481de9c
ZY		 461}
462
b481de9c
ZY		 463/*
464 * CARD_STATE_CMD
465 *
9fbab516 466 * Use: Sets the device's internal card state to enable, disable, or halt
b481de9c
ZY		 467 *
468 * When in the 'enable' state the card operates as normal.
469 * When in the 'disable' state, the card enters into a low power mode.
470 * When in the 'halt' state, the card is shut down and must be fully
471 * restarted to come back on.
472 */
c79dd5b5 473static int iwl4965_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
b481de9c 474{
857485c0 475 struct iwl_host_cmd cmd = {
b481de9c
ZY		 476 .id = REPLY_CARD_STATE_CMD,
477 .len = sizeof(u32),
478 .data = &flags,
479 .meta.flags = meta_flag,
480 };
481
857485c0 482 return iwl_send_cmd(priv, &cmd);
b481de9c
ZY		 483}
484
fcab423d 485static void iwl_clear_free_frames(struct iwl_priv *priv)
b481de9c
ZY		 486{
487 struct list_head *element;
488
489 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
490 priv->frames_count);
491
492 while (!list_empty(&priv->free_frames)) {
493 element = priv->free_frames.next;
494 list_del(element);
fcab423d 495 kfree(list_entry(element, struct iwl_frame, list));
b481de9c
ZY		 496 priv->frames_count--;
497 }
498
499 if (priv->frames_count) {
500 IWL_WARNING("%d frames still in use. Did we lose one?\n",
501 priv->frames_count);
502 priv->frames_count = 0;
503 }
504}
505
fcab423d 506static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
b481de9c 507{
fcab423d 508 struct iwl_frame *frame;
b481de9c
ZY		 509 struct list_head *element;
510 if (list_empty(&priv->free_frames)) {
511 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
512 if (!frame) {
513 IWL_ERROR("Could not allocate frame!\n");
514 return NULL;
515 }
516
517 priv->frames_count++;
518 return frame;
519 }
520
521 element = priv->free_frames.next;
522 list_del(element);
fcab423d 523 return list_entry(element, struct iwl_frame, list);
b481de9c
ZY		 524}
525
fcab423d 526static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
b481de9c
ZY		 527{
528 memset(frame, 0, sizeof(*frame));
529 list_add(&frame->list, &priv->free_frames);
530}
531
c79dd5b5 532unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
b481de9c
ZY		 533 struct ieee80211_hdr *hdr,
534 const u8 *dest, int left)
535{
536
3109ece1 537 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
b481de9c
ZY		 538 ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
539 (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
540 return 0;
541
542 if (priv->ibss_beacon->len > left)
543 return 0;
544
545 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
546
547 return priv->ibss_beacon->len;
548}
549
39e88504 550static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
b481de9c 551{
39e88504
GC		 552 int i;
553 int rate_mask;
554
555 /* Set rate mask*/
556 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
557 rate_mask = priv->active_rate_basic & 0xF;
558 else
559 rate_mask = priv->active_rate_basic & 0xFF0;
b481de9c 560
39e88504 561 /* Find lowest valid rate */
b481de9c 562 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1826dcc0 563 i = iwl_rates[i].next_ieee) {
b481de9c 564 if (rate_mask & (1 << i))
1826dcc0 565 return iwl_rates[i].plcp;
b481de9c
ZY		 566 }
567
39e88504
GC		 568 /* No valid rate was found. Assign the lowest one */
569 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
570 return IWL_RATE_1M_PLCP;
571 else
572 return IWL_RATE_6M_PLCP;
b481de9c
ZY		 573}
574
c79dd5b5 575static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
b481de9c 576{
fcab423d 577 struct iwl_frame *frame;
b481de9c
ZY		 578 unsigned int frame_size;
579 int rc;
580 u8 rate;
581
fcab423d 582 frame = iwl_get_free_frame(priv);
b481de9c
ZY		 583
584 if (!frame) {
585 IWL_ERROR("Could not obtain free frame buffer for beacon "
586 "command.\n");
587 return -ENOMEM;
588 }
589
39e88504 590 rate = iwl4965_rate_get_lowest_plcp(priv);
b481de9c 591
bb8c093b 592 frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
b481de9c 593
857485c0 594 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
b481de9c
ZY		 595 &frame->u.cmd[0]);
596
fcab423d 597 iwl_free_frame(priv, frame);
b481de9c
ZY		 598
599 return rc;
600}
601
b481de9c
ZY		 602/******************************************************************************
603 *
604 * Misc. internal state and helper functions
605 *
606 ******************************************************************************/
b481de9c 607
b481de9c 608/**
bb8c093b 609 * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
b481de9c
ZY		 610 *
611 * return : set the bit for each supported rate insert in ie
612 */
bb8c093b 613static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
c7c46676 614 u16 basic_rate, int *left)
b481de9c
ZY		 615{
616 u16 ret_rates = 0, bit;
617 int i;
c7c46676
TW		 618 u8 *cnt = ie;
619 u8 *rates = ie + 1;
b481de9c
ZY		 620
621 for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
622 if (bit & supported_rate) {
623 ret_rates |= bit;
1826dcc0 624 rates[*cnt] = iwl_rates[i].ieee |
c7c46676
TW		 625 ((bit & basic_rate) ? 0x80 : 0x00);
626 (*cnt)++;
627 (*left)--;
628 if ((*left <= 0) ||
629 (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
b481de9c
ZY		 630 break;
631 }
632 }
633
634 return ret_rates;
635}
636
d1141dfb
EG		 637static void iwl4965_ht_conf(struct iwl_priv *priv,
638 struct ieee80211_bss_conf *bss_conf)
639{
640 struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
641 struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
642 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
643
644 IWL_DEBUG_MAC80211("enter: \n");
645
646 iwl_conf->is_ht = bss_conf->assoc_ht;
647
648 if (!iwl_conf->is_ht)
649 return;
650
651 priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
652
653 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
a9841013 654 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
d1141dfb 655 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
a9841013 656 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
d1141dfb
EG		 657
658 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
659 iwl_conf->max_amsdu_size =
660 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
661
662 iwl_conf->supported_chan_width =
663 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
664 iwl_conf->extension_chan_offset =
665 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
666 /* If no above or below channel supplied disable FAT channel */
963f5517
EG		 667 if (iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_ABOVE &&
668 iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_BELOW) {
669 iwl_conf->extension_chan_offset = IEEE80211_HT_IE_CHA_SEC_NONE;
d1141dfb 670 iwl_conf->supported_chan_width = 0;
963f5517 671 }
d1141dfb
EG		 672
673 iwl_conf->tx_mimo_ps_mode =
674 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
675 memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
676
677 iwl_conf->control_channel = ht_bss_conf->primary_channel;
678 iwl_conf->tx_chan_width =
679 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
680 iwl_conf->ht_protection =
681 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
682 iwl_conf->non_GF_STA_present =
683 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
684
685 IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
686 IWL_DEBUG_MAC80211("leave\n");
687}
688
689static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband,
690 u8 *pos, int *left)
691{
692 struct ieee80211_ht_cap *ht_cap;
693
694 if (!sband || !sband->ht_info.ht_supported)
695 return;
696
697 if (*left < sizeof(struct ieee80211_ht_cap))
698 return;
699
700 *pos++ = sizeof(struct ieee80211_ht_cap);
701 ht_cap = (struct ieee80211_ht_cap *) pos;
702
703 ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap);
704 memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16);
705 ht_cap->ampdu_params_info =
706 (sband->ht_info.ampdu_factor & IEEE80211_HT_CAP_AMPDU_FACTOR) |
707 ((sband->ht_info.ampdu_density << 2) &
708 IEEE80211_HT_CAP_AMPDU_DENSITY);
709 *left -= sizeof(struct ieee80211_ht_cap);
710}
d1141dfb 711
b481de9c 712/**
bb8c093b 713 * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
b481de9c 714 */
c79dd5b5 715static u16 iwl4965_fill_probe_req(struct iwl_priv *priv,
78330fdd
TW		 716 enum ieee80211_band band,
717 struct ieee80211_mgmt *frame,
718 int left, int is_direct)
b481de9c
ZY		 719{
720 int len = 0;
721 u8 *pos = NULL;
bee488db 722 u16 active_rates, ret_rates, cck_rates, active_rate_basic;
78330fdd 723 const struct ieee80211_supported_band *sband =
d1141dfb 724 iwl_get_hw_mode(priv, band);
b481de9c
ZY		 725
726 /* Make sure there is enough space for the probe request,
727 * two mandatory IEs and the data */
728 left -= 24;
729 if (left < 0)
730 return 0;
731 len += 24;
732
733 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
57bd1bea 734 memcpy(frame->da, iwl_bcast_addr, ETH_ALEN);
b481de9c 735 memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
57bd1bea 736 memcpy(frame->bssid, iwl_bcast_addr, ETH_ALEN);
b481de9c
ZY		 737 frame->seq_ctrl = 0;
738
739 /* fill in our indirect SSID IE */
740 /* ...next IE... */
741
742 left -= 2;
743 if (left < 0)
744 return 0;
745 len += 2;
746 pos = &(frame->u.probe_req.variable[0]);
747 *pos++ = WLAN_EID_SSID;
748 *pos++ = 0;
749
750 /* fill in our direct SSID IE... */
751 if (is_direct) {
752 /* ...next IE... */
753 left -= 2 + priv->essid_len;
754 if (left < 0)
755 return 0;
756 /* ... fill it in... */
757 *pos++ = WLAN_EID_SSID;
758 *pos++ = priv->essid_len;
759 memcpy(pos, priv->essid, priv->essid_len);
760 pos += priv->essid_len;
761 len += 2 + priv->essid_len;
762 }
763
764 /* fill in supported rate */
765 /* ...next IE... */
766 left -= 2;
767 if (left < 0)
768 return 0;
c7c46676 769
b481de9c
ZY		 770 /* ... fill it in... */
771 *pos++ = WLAN_EID_SUPP_RATES;
772 *pos = 0;
c7c46676 773
bee488db 774 /* exclude 60M rate */
775 active_rates = priv->rates_mask;
776 active_rates &= ~IWL_RATE_60M_MASK;
777
778 active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
b481de9c 779
c7c46676 780 cck_rates = IWL_CCK_RATES_MASK & active_rates;
bb8c093b 781 ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
bee488db 782 active_rate_basic, &left);
c7c46676
TW		 783 active_rates &= ~ret_rates;
784
bb8c093b 785 ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
bee488db 786 active_rate_basic, &left);
c7c46676
TW		 787 active_rates &= ~ret_rates;
788
b481de9c
ZY		 789 len += 2 + *pos;
790 pos += (*pos) + 1;
c7c46676 791 if (active_rates == 0)
b481de9c
ZY		 792 goto fill_end;
793
794 /* fill in supported extended rate */
795 /* ...next IE... */
796 left -= 2;
797 if (left < 0)
798 return 0;
799 /* ... fill it in... */
800 *pos++ = WLAN_EID_EXT_SUPP_RATES;
801 *pos = 0;
bb8c093b 802 iwl4965_supported_rate_to_ie(pos, active_rates,
bee488db 803 active_rate_basic, &left);
b481de9c
ZY		 804 if (*pos > 0)
805 len += 2 + *pos;
806
b481de9c 807 fill_end:
d1141dfb
EG		 808 /* fill in HT IE */
809 left -= 2;
810 if (left < 0)
811 return 0;
812
813 *pos++ = WLAN_EID_HT_CAPABILITY;
814 *pos = 0;
815
816 iwl_ht_cap_to_ie(sband, pos, &left);
817
818 if (*pos > 0)
819 len += 2 + *pos;
b481de9c
ZY		 820 return (u16)len;
821}
822
823/*
824 * QoS support
825*/
c79dd5b5 826static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
bb8c093b 827 struct iwl4965_qosparam_cmd *qos)
b481de9c
ZY		 828{
829
857485c0 830 return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
bb8c093b 831 sizeof(struct iwl4965_qosparam_cmd), qos);
b481de9c
ZY		 832}
833
c79dd5b5 834static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
b481de9c
ZY		 835{
836 unsigned long flags;
837
b481de9c
ZY		 838 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
839 return;
840
841 if (!priv->qos_data.qos_enable)
842 return;
843
844 spin_lock_irqsave(&priv->lock, flags);
845 priv->qos_data.def_qos_parm.qos_flags = 0;
846
847 if (priv->qos_data.qos_cap.q_AP.queue_request &&
848 !priv->qos_data.qos_cap.q_AP.txop_request)
849 priv->qos_data.def_qos_parm.qos_flags |=
850 QOS_PARAM_FLG_TXOP_TYPE_MSK;
b481de9c
ZY		 851 if (priv->qos_data.qos_active)
852 priv->qos_data.def_qos_parm.qos_flags |=
853 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
854
fd105e79 855 if (priv->current_ht_config.is_ht)
f1f1f5c7 856 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
f1f1f5c7 857
b481de9c
ZY		 858 spin_unlock_irqrestore(&priv->lock, flags);
859
3109ece1 860 if (force || iwl_is_associated(priv)) {
f1f1f5c7
TW		 861 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
862 priv->qos_data.qos_active,
863 priv->qos_data.def_qos_parm.qos_flags);
b481de9c 864
bb8c093b 865 iwl4965_send_qos_params_command(priv,
b481de9c
ZY		 866 &(priv->qos_data.def_qos_parm));
867 }
868}
869
c79dd5b5 870int iwl4965_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
b481de9c
ZY		 871{
872 /* Filter incoming packets to determine if they are targeted toward
873 * this network, discarding packets coming from ourselves */
874 switch (priv->iw_mode) {
875 case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source | BSSID */
876 /* packets from our adapter are dropped (echo) */
877 if (!compare_ether_addr(header->addr2, priv->mac_addr))
878 return 0;
879 /* {broad,multi}cast packets to our IBSS go through */
880 if (is_multicast_ether_addr(header->addr1))
881 return !compare_ether_addr(header->addr3, priv->bssid);
882 /* packets to our adapter go through */
883 return !compare_ether_addr(header->addr1, priv->mac_addr);
884 case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
885 /* packets from our adapter are dropped (echo) */
886 if (!compare_ether_addr(header->addr3, priv->mac_addr))
887 return 0;
888 /* {broad,multi}cast packets to our BSS go through */
889 if (is_multicast_ether_addr(header->addr1))
890 return !compare_ether_addr(header->addr2, priv->bssid);
891 /* packets to our adapter go through */
892 return !compare_ether_addr(header->addr1, priv->mac_addr);
69dc5d9d
TW		 893 default:
894 break;
b481de9c
ZY		 895 }
896
897 return 1;
898}
899
b481de9c 900
b481de9c
ZY		 901
902/**
bb8c093b 903 * iwl4965_scan_cancel - Cancel any currently executing HW scan
b481de9c
ZY		 904 *
905 * NOTE: priv->mutex is not required before calling this function
906 */
c79dd5b5 907static int iwl4965_scan_cancel(struct iwl_priv *priv)
b481de9c
ZY		 908{
909 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
910 clear_bit(STATUS_SCANNING, &priv->status);
911 return 0;
912 }
913
914 if (test_bit(STATUS_SCANNING, &priv->status)) {
915 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
916 IWL_DEBUG_SCAN("Queuing scan abort.\n");
917 set_bit(STATUS_SCAN_ABORTING, &priv->status);
918 queue_work(priv->workqueue, &priv->abort_scan);
919
920 } else
921 IWL_DEBUG_SCAN("Scan abort already in progress.\n");
922
923 return test_bit(STATUS_SCANNING, &priv->status);
924 }
925
926 return 0;
927}
928
929/**
bb8c093b 930 * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
b481de9c
ZY		 931 * @ms: amount of time to wait (in milliseconds) for scan to abort
932 *
933 * NOTE: priv->mutex must be held before calling this function
934 */
c79dd5b5 935static int iwl4965_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
b481de9c
ZY		 936{
937 unsigned long now = jiffies;
938 int ret;
939
bb8c093b 940 ret = iwl4965_scan_cancel(priv);
b481de9c
ZY		 941 if (ret && ms) {
942 mutex_unlock(&priv->mutex);
943 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
944 test_bit(STATUS_SCANNING, &priv->status))
945 msleep(1);
946 mutex_lock(&priv->mutex);
947
948 return test_bit(STATUS_SCANNING, &priv->status);
949 }
950
951 return ret;
952}
953
c79dd5b5 954static void iwl4965_sequence_reset(struct iwl_priv *priv)
b481de9c
ZY		 955{
956 /* Reset ieee stats */
957
958 /* We don't reset the net_device_stats (ieee->stats) on
959 * re-association */
960
961 priv->last_seq_num = -1;
962 priv->last_frag_num = -1;
963 priv->last_packet_time = 0;
964
bb8c093b 965 iwl4965_scan_cancel(priv);
b481de9c
ZY		 966}
967
968#define MAX_UCODE_BEACON_INTERVAL 4096
969#define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
970
bb8c093b 971static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
b481de9c
ZY		 972{
973 u16 new_val = 0;
974 u16 beacon_factor = 0;
975
976 beacon_factor =
977 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
978 / MAX_UCODE_BEACON_INTERVAL;
979 new_val = beacon_val / beacon_factor;
980
981 return cpu_to_le16(new_val);
982}
983
c79dd5b5 984static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
b481de9c
ZY		 985{
986 u64 interval_tm_unit;
987 u64 tsf, result;
988 unsigned long flags;
989 struct ieee80211_conf *conf = NULL;
990 u16 beacon_int = 0;
991
992 conf = ieee80211_get_hw_conf(priv->hw);
993
994 spin_lock_irqsave(&priv->lock, flags);
3109ece1
TW		 995 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
996 priv->rxon_timing.timestamp.dw[0] =
997 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
b481de9c
ZY		 998
999 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
1000
3109ece1 1001 tsf = priv->timestamp;
b481de9c
ZY		 1002
1003 beacon_int = priv->beacon_int;
1004 spin_unlock_irqrestore(&priv->lock, flags);
1005
1006 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
1007 if (beacon_int == 0) {
1008 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
1009 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
1010 } else {
1011 priv->rxon_timing.beacon_interval =
1012 cpu_to_le16(beacon_int);
1013 priv->rxon_timing.beacon_interval =
bb8c093b 1014 iwl4965_adjust_beacon_interval(
b481de9c
ZY		 1015 le16_to_cpu(priv->rxon_timing.beacon_interval));
1016 }
1017
1018 priv->rxon_timing.atim_window = 0;
1019 } else {
1020 priv->rxon_timing.beacon_interval =
bb8c093b 1021 iwl4965_adjust_beacon_interval(conf->beacon_int);
b481de9c
ZY		 1022 /* TODO: we need to get atim_window from upper stack
1023 * for now we set to 0 */
1024 priv->rxon_timing.atim_window = 0;
1025 }
1026
1027 interval_tm_unit =
1028 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
1029 result = do_div(tsf, interval_tm_unit);
1030 priv->rxon_timing.beacon_init_val =
1031 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
1032
1033 IWL_DEBUG_ASSOC
1034 ("beacon interval %d beacon timer %d beacon tim %d\n",
1035 le16_to_cpu(priv->rxon_timing.beacon_interval),
1036 le32_to_cpu(priv->rxon_timing.beacon_init_val),
1037 le16_to_cpu(priv->rxon_timing.atim_window));
1038}
1039
c79dd5b5 1040static int iwl4965_scan_initiate(struct iwl_priv *priv)
b481de9c
ZY		 1041{
1042 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1043 IWL_ERROR("APs don't scan.\n");
1044 return 0;
1045 }
1046
fee1247a 1047 if (!iwl_is_ready_rf(priv)) {
b481de9c
ZY		 1048 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
1049 return -EIO;
1050 }
1051
1052 if (test_bit(STATUS_SCANNING, &priv->status)) {
1053 IWL_DEBUG_SCAN("Scan already in progress.\n");
1054 return -EAGAIN;
1055 }
1056
1057 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1058 IWL_DEBUG_SCAN("Scan request while abort pending. "
1059 "Queuing.\n");
1060 return -EAGAIN;
1061 }
1062
1063 IWL_DEBUG_INFO("Starting scan...\n");
1064 priv->scan_bands = 2;
1065 set_bit(STATUS_SCANNING, &priv->status);
1066 priv->scan_start = jiffies;
1067 priv->scan_pass_start = priv->scan_start;
1068
1069 queue_work(priv->workqueue, &priv->request_scan);
1070
1071 return 0;
1072}
1073
b481de9c 1074
82a66bbb
TW		 1075static void iwl_set_flags_for_band(struct iwl_priv *priv,
1076 enum ieee80211_band band)
b481de9c 1077{
8318d78a 1078 if (band == IEEE80211_BAND_5GHZ) {
b481de9c
ZY		 1079 priv->staging_rxon.flags &=
1080 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1081 | RXON_FLG_CCK_MSK);
1082 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1083 } else {
508e32e1 1084 /* Copied from iwl4965_post_associate() */
b481de9c
ZY		 1085 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1086 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1087 else
1088 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1089
1090 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
1091 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1092
1093 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1094 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1095 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1096 }
1097}
1098
1099/*
01ebd063 1100 * initialize rxon structure with default values from eeprom
b481de9c 1101 */
c79dd5b5 1102static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
b481de9c 1103{
bf85ea4f 1104 const struct iwl_channel_info *ch_info;
b481de9c
ZY		 1105
1106 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1107
1108 switch (priv->iw_mode) {
1109 case IEEE80211_IF_TYPE_AP:
1110 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1111 break;
1112
1113 case IEEE80211_IF_TYPE_STA:
1114 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1115 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1116 break;
1117
1118 case IEEE80211_IF_TYPE_IBSS:
1119 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1120 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1121 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1122 RXON_FILTER_ACCEPT_GRP_MSK;
1123 break;
1124
1125 case IEEE80211_IF_TYPE_MNTR:
1126 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
1127 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
1128 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
1129 break;
69dc5d9d
TW		 1130 default:
1131 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
1132 break;
b481de9c
ZY		 1133 }
1134
1135#if 0
1136 /* TODO: Figure out when short_preamble would be set and cache from
1137 * that */
1138 if (!hw_to_local(priv->hw)->short_preamble)
1139 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1140 else
1141 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1142#endif
1143
8622e705 1144 ch_info = iwl_get_channel_info(priv, priv->band,
b481de9c
ZY		 1145 le16_to_cpu(priv->staging_rxon.channel));
1146
1147 if (!ch_info)
1148 ch_info = &priv->channel_info[0];
1149
1150 /*
1151 * in some case A channels are all non IBSS
1152 * in this case force B/G channel
1153 */
1154 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
1155 !(is_channel_ibss(ch_info)))
1156 ch_info = &priv->channel_info[0];
1157
1158 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
8318d78a 1159 priv->band = ch_info->band;
b481de9c 1160
82a66bbb 1161 iwl_set_flags_for_band(priv, priv->band);
b481de9c
ZY		 1162
1163 priv->staging_rxon.ofdm_basic_rates =
1164 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1165 priv->staging_rxon.cck_basic_rates =
1166 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1167
1168 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
1169 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
1170 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1171 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1172 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1173 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
c7de35cd 1174 iwl_set_rxon_chain(priv);
b481de9c
ZY		 1175}
1176
c79dd5b5 1177static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
b481de9c 1178{
b481de9c 1179 if (mode == IEEE80211_IF_TYPE_IBSS) {
bf85ea4f 1180 const struct iwl_channel_info *ch_info;
b481de9c 1181
8622e705 1182 ch_info = iwl_get_channel_info(priv,
8318d78a 1183 priv->band,
b481de9c
ZY		 1184 le16_to_cpu(priv->staging_rxon.channel));
1185
1186 if (!ch_info || !is_channel_ibss(ch_info)) {
1187 IWL_ERROR("channel %d not IBSS channel\n",
1188 le16_to_cpu(priv->staging_rxon.channel));
1189 return -EINVAL;
1190 }
1191 }
1192
b481de9c
ZY		 1193 priv->iw_mode = mode;
1194
bb8c093b 1195 iwl4965_connection_init_rx_config(priv);
b481de9c
ZY		 1196 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1197
bf85ea4f 1198 iwlcore_clear_stations_table(priv);
b481de9c 1199
fde3571f 1200 /* dont commit rxon if rf-kill is on*/
fee1247a 1201 if (!iwl_is_ready_rf(priv))
fde3571f
MA		 1202 return -EAGAIN;
1203
1204 cancel_delayed_work(&priv->scan_check);
1205 if (iwl4965_scan_cancel_timeout(priv, 100)) {
1206 IWL_WARNING("Aborted scan still in progress after 100ms\n");
1207 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
1208 return -EAGAIN;
1209 }
1210
bb8c093b 1211 iwl4965_commit_rxon(priv);
b481de9c
ZY		 1212
1213 return 0;
1214}
1215
c79dd5b5 1216static void iwl4965_set_rate(struct iwl_priv *priv)
b481de9c 1217{
8318d78a 1218 const struct ieee80211_supported_band *hw = NULL;
b481de9c
ZY		 1219 struct ieee80211_rate *rate;
1220 int i;
1221
d1141dfb 1222 hw = iwl_get_hw_mode(priv, priv->band);
c4ba9621
SA		 1223 if (!hw) {
1224 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
1225 return;
1226 }
b481de9c
ZY		 1227
1228 priv->active_rate = 0;
1229 priv->active_rate_basic = 0;
1230
8318d78a
JB		 1231 for (i = 0; i < hw->n_bitrates; i++) {
1232 rate = &(hw->bitrates[i]);
1233 if (rate->hw_value < IWL_RATE_COUNT)
1234 priv->active_rate |= (1 << rate->hw_value);
b481de9c
ZY		 1235 }
1236
1237 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
1238 priv->active_rate, priv->active_rate_basic);
1239
1240 /*
1241 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
1242 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
1243 * OFDM
1244 */
1245 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
1246 priv->staging_rxon.cck_basic_rates =
1247 ((priv->active_rate_basic &
1248 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
1249 else
1250 priv->staging_rxon.cck_basic_rates =
1251 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1252
1253 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
1254 priv->staging_rxon.ofdm_basic_rates =
1255 ((priv->active_rate_basic &
1256 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
1257 IWL_FIRST_OFDM_RATE) & 0xFF;
1258 else
1259 priv->staging_rxon.ofdm_basic_rates =
1260 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1261}
1262
64e72c3e 1263int iwl4965_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
b481de9c
ZY		 1264{
1265 unsigned long flags;
1266
1267 if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
64e72c3e 1268 return 0;
b481de9c
ZY		 1269
1270 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
1271 disable_radio ? "OFF" : "ON");
1272
1273 if (disable_radio) {
bb8c093b 1274 iwl4965_scan_cancel(priv);
b481de9c
ZY		 1275 /* FIXME: This is a workaround for AP */
1276 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
1277 spin_lock_irqsave(&priv->lock, flags);
3395f6e9 1278 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
b481de9c
ZY		 1279 CSR_UCODE_SW_BIT_RFKILL);
1280 spin_unlock_irqrestore(&priv->lock, flags);
ad97edd2 1281 /* call the host command only if no hw rf-kill set */
59003835
MA		 1282 if (!test_bit(STATUS_RF_KILL_HW, &priv->status) &&
1283 iwl_is_ready(priv))
ad97edd2
MA		 1284 iwl4965_send_card_state(priv,
1285 CARD_STATE_CMD_DISABLE,
1286 0);
b481de9c 1287 set_bit(STATUS_RF_KILL_SW, &priv->status);
ad97edd2
MA		 1288
1289 /* make sure mac80211 stop sending Tx frame */
1290 if (priv->mac80211_registered)
1291 ieee80211_stop_queues(priv->hw);
b481de9c 1292 }
64e72c3e 1293 return 0;
b481de9c
ZY		 1294 }
1295
1296 spin_lock_irqsave(&priv->lock, flags);
3395f6e9 1297 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
b481de9c
ZY		 1298
1299 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1300 spin_unlock_irqrestore(&priv->lock, flags);
1301
1302 /* wake up ucode */
1303 msleep(10);
1304
1305 spin_lock_irqsave(&priv->lock, flags);
3395f6e9
TW		 1306 iwl_read32(priv, CSR_UCODE_DRV_GP1);
1307 if (!iwl_grab_nic_access(priv))
1308 iwl_release_nic_access(priv);
b481de9c
ZY		 1309 spin_unlock_irqrestore(&priv->lock, flags);
1310
1311 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
1312 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
1313 "disabled by HW switch\n");
64e72c3e 1314 return 0;
b481de9c
ZY		 1315 }
1316
1317 queue_work(priv->workqueue, &priv->restart);
64e72c3e 1318 return 1;
b481de9c
ZY		 1319}
1320
b481de9c
ZY		 1321#define IWL_PACKET_RETRY_TIME HZ
1322
c79dd5b5 1323int iwl4965_is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
b481de9c
ZY		 1324{
1325 u16 sc = le16_to_cpu(header->seq_ctrl);
1326 u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
1327 u16 frag = sc & IEEE80211_SCTL_FRAG;
1328 u16 *last_seq, *last_frag;
1329 unsigned long *last_time;
1330
1331 switch (priv->iw_mode) {
1332 case IEEE80211_IF_TYPE_IBSS:{
1333 struct list_head *p;
bb8c093b 1334 struct iwl4965_ibss_seq *entry = NULL;
b481de9c
ZY		 1335 u8 *mac = header->addr2;
1336 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
1337
1338 __list_for_each(p, &priv->ibss_mac_hash[index]) {
bb8c093b 1339 entry = list_entry(p, struct iwl4965_ibss_seq, list);
b481de9c
ZY		 1340 if (!compare_ether_addr(entry->mac, mac))
1341 break;
1342 }
1343 if (p == &priv->ibss_mac_hash[index]) {
1344 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
1345 if (!entry) {
bc434dd2 1346 IWL_ERROR("Cannot malloc new mac entry\n");
b481de9c
ZY		 1347 return 0;
1348 }
1349 memcpy(entry->mac, mac, ETH_ALEN);
1350 entry->seq_num = seq;
1351 entry->frag_num = frag;
1352 entry->packet_time = jiffies;
bc434dd2 1353 list_add(&entry->list, &priv->ibss_mac_hash[index]);
b481de9c
ZY		 1354 return 0;
1355 }
1356 last_seq = &entry->seq_num;
1357 last_frag = &entry->frag_num;
1358 last_time = &entry->packet_time;
1359 break;
1360 }
1361 case IEEE80211_IF_TYPE_STA:
1362 last_seq = &priv->last_seq_num;
1363 last_frag = &priv->last_frag_num;
1364 last_time = &priv->last_packet_time;
1365 break;
1366 default:
1367 return 0;
1368 }
1369 if ((*last_seq == seq) &&
1370 time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
1371 if (*last_frag == frag)
1372 goto drop;
1373 if (*last_frag + 1 != frag)
1374 /* out-of-order fragment */
1375 goto drop;
1376 } else
1377 *last_seq = seq;
1378
1379 *last_frag = frag;
1380 *last_time = jiffies;
1381 return 0;
1382
1383 drop:
1384 return 1;
1385}
1386
c8b0e6e1 1387#ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
b481de9c
ZY		 1388
1389#include "iwl-spectrum.h"
1390
1391#define BEACON_TIME_MASK_LOW 0x00FFFFFF
1392#define BEACON_TIME_MASK_HIGH 0xFF000000
1393#define TIME_UNIT 1024
1394
1395/*
1396 * extended beacon time format
1397 * time in usec will be changed into a 32-bit value in 8:24 format
1398 * the high 1 byte is the beacon counts
1399 * the lower 3 bytes is the time in usec within one beacon interval
1400 */
1401
bb8c093b 1402static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
b481de9c
ZY		 1403{
1404 u32 quot;
1405 u32 rem;
1406 u32 interval = beacon_interval * 1024;
1407
1408 if (!interval || !usec)
1409 return 0;
1410
1411 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
1412 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
1413
1414 return (quot << 24) + rem;
1415}
1416
1417/* base is usually what we get from ucode with each received frame,
1418 * the same as HW timer counter counting down
1419 */
1420
bb8c093b 1421static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
b481de9c
ZY		 1422{
1423 u32 base_low = base & BEACON_TIME_MASK_LOW;
1424 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
1425 u32 interval = beacon_interval * TIME_UNIT;
1426 u32 res = (base & BEACON_TIME_MASK_HIGH) +
1427 (addon & BEACON_TIME_MASK_HIGH);
1428
1429 if (base_low > addon_low)
1430 res += base_low - addon_low;
1431 else if (base_low < addon_low) {
1432 res += interval + base_low - addon_low;
1433 res += (1 << 24);
1434 } else
1435 res += (1 << 24);
1436
1437 return cpu_to_le32(res);
1438}
1439
c79dd5b5 1440static int iwl4965_get_measurement(struct iwl_priv *priv,
b481de9c
ZY		 1441 struct ieee80211_measurement_params *params,
1442 u8 type)
1443{
bb8c093b 1444 struct iwl4965_spectrum_cmd spectrum;
db11d634 1445 struct iwl_rx_packet *res;
857485c0 1446 struct iwl_host_cmd cmd = {
b481de9c
ZY		 1447 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
1448 .data = (void *)&spectrum,
1449 .meta.flags = CMD_WANT_SKB,
1450 };
1451 u32 add_time = le64_to_cpu(params->start_time);
1452 int rc;
1453 int spectrum_resp_status;
1454 int duration = le16_to_cpu(params->duration);
1455
3109ece1 1456 if (iwl_is_associated(priv))
b481de9c 1457 add_time =
bb8c093b 1458 iwl4965_usecs_to_beacons(
b481de9c
ZY		 1459 le64_to_cpu(params->start_time) - priv->last_tsf,
1460 le16_to_cpu(priv->rxon_timing.beacon_interval));
1461
1462 memset(&spectrum, 0, sizeof(spectrum));
1463
1464 spectrum.channel_count = cpu_to_le16(1);
1465 spectrum.flags =
1466 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
1467 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
1468 cmd.len = sizeof(spectrum);
1469 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
1470
3109ece1 1471 if (iwl_is_associated(priv))
b481de9c 1472 spectrum.start_time =
bb8c093b 1473 iwl4965_add_beacon_time(priv->last_beacon_time,
b481de9c
ZY		 1474 add_time,
1475 le16_to_cpu(priv->rxon_timing.beacon_interval));
1476 else
1477 spectrum.start_time = 0;
1478
1479 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
1480 spectrum.channels[0].channel = params->channel;
1481 spectrum.channels[0].type = type;
1482 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
1483 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
1484 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
1485
857485c0 1486 rc = iwl_send_cmd_sync(priv, &cmd);
b481de9c
ZY		 1487 if (rc)
1488 return rc;
1489
db11d634 1490 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
b481de9c
ZY		 1491 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1492 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
1493 rc = -EIO;
1494 }
1495
1496 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
1497 switch (spectrum_resp_status) {
1498 case 0: /* Command will be handled */
1499 if (res->u.spectrum.id != 0xff) {
1500 IWL_DEBUG_INFO
1501 ("Replaced existing measurement: %d\n",
1502 res->u.spectrum.id);
1503 priv->measurement_status &= ~MEASUREMENT_READY;
1504 }
1505 priv->measurement_status |= MEASUREMENT_ACTIVE;
1506 rc = 0;
1507 break;
1508
1509 case 1: /* Command will not be handled */
1510 rc = -EAGAIN;
1511 break;
1512 }
1513
1514 dev_kfree_skb_any(cmd.meta.u.skb);
1515
1516 return rc;
1517}
1518#endif
1519
b481de9c
ZY		 1520/******************************************************************************
1521 *
1522 * Generic RX handler implementations
1523 *
1524 ******************************************************************************/
885ba202
TW		 1525static void iwl_rx_reply_alive(struct iwl_priv *priv,
1526 struct iwl_rx_mem_buffer *rxb)
b481de9c 1527{
db11d634 1528 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
885ba202 1529 struct iwl_alive_resp *palive;
b481de9c
ZY		 1530 struct delayed_work *pwork;
1531
1532 palive = &pkt->u.alive_frame;
1533
1534 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1535 "0x%01X 0x%01X\n",
1536 palive->is_valid, palive->ver_type,
1537 palive->ver_subtype);
1538
1539 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1540 IWL_DEBUG_INFO("Initialization Alive received.\n");
1541 memcpy(&priv->card_alive_init,
1542 &pkt->u.alive_frame,
885ba202 1543 sizeof(struct iwl_init_alive_resp));
b481de9c
ZY		 1544 pwork = &priv->init_alive_start;
1545 } else {
1546 IWL_DEBUG_INFO("Runtime Alive received.\n");
1547 memcpy(&priv->card_alive, &pkt->u.alive_frame,
885ba202 1548 sizeof(struct iwl_alive_resp));
b481de9c
ZY		 1549 pwork = &priv->alive_start;
1550 }
1551
1552 /* We delay the ALIVE response by 5ms to
1553 * give the HW RF Kill time to activate... */
1554 if (palive->is_valid == UCODE_VALID_OK)
1555 queue_delayed_work(priv->workqueue, pwork,
1556 msecs_to_jiffies(5));
1557 else
1558 IWL_WARNING("uCode did not respond OK.\n");
1559}
1560
c79dd5b5 1561static void iwl4965_rx_reply_error(struct iwl_priv *priv,
a55360e4 1562 struct iwl_rx_mem_buffer *rxb)
b481de9c 1563{
db11d634 1564 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
b481de9c
ZY		 1565
1566 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1567 "seq 0x%04X ser 0x%08X\n",
1568 le32_to_cpu(pkt->u.err_resp.error_type),
1569 get_cmd_string(pkt->u.err_resp.cmd_id),
1570 pkt->u.err_resp.cmd_id,
1571 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1572 le32_to_cpu(pkt->u.err_resp.error_info));
1573}
1574
1575#define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1576
a55360e4 1577static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
b481de9c 1578{
db11d634 1579 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
c1adf9fb 1580 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
bb8c093b 1581 struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
b481de9c
ZY		 1582 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1583 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1584 rxon->channel = csa->channel;
1585 priv->staging_rxon.channel = csa->channel;
1586}
1587
c79dd5b5 1588static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
a55360e4 1589 struct iwl_rx_mem_buffer *rxb)
b481de9c 1590{
c8b0e6e1 1591#ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
db11d634 1592 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
bb8c093b 1593 struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
b481de9c
ZY		 1594
1595 if (!report->state) {
f3d67999
EK		 1596 IWL_DEBUG(IWL_DL_11H,
1597 "Spectrum Measure Notification: Start\n");
b481de9c
ZY		 1598 return;
1599 }
1600
1601 memcpy(&priv->measure_report, report, sizeof(*report));
1602 priv->measurement_status |= MEASUREMENT_READY;
1603#endif
1604}
1605
c79dd5b5 1606static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
a55360e4 1607 struct iwl_rx_mem_buffer *rxb)
b481de9c 1608{
0a6857e7 1609#ifdef CONFIG_IWLWIFI_DEBUG
db11d634 1610 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
bb8c093b 1611 struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
b481de9c
ZY		 1612 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1613 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1614#endif
1615}
1616
c79dd5b5 1617static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
a55360e4 1618 struct iwl_rx_mem_buffer *rxb)
b481de9c 1619{
db11d634 1620 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
b481de9c
ZY		 1621 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1622 "notification for %s:\n",
1623 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
bf403db8 1624 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
b481de9c
ZY		 1625}
1626
bb8c093b 1627static void iwl4965_bg_beacon_update(struct work_struct *work)
b481de9c 1628{
c79dd5b5
TW		 1629 struct iwl_priv *priv =
1630 container_of(work, struct iwl_priv, beacon_update);
b481de9c
ZY		 1631 struct sk_buff *beacon;
1632
1633 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
e039fa4a 1634 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
b481de9c
ZY		 1635
1636 if (!beacon) {
1637 IWL_ERROR("update beacon failed\n");
1638 return;
1639 }
1640
1641 mutex_lock(&priv->mutex);
1642 /* new beacon skb is allocated every time; dispose previous.*/
1643 if (priv->ibss_beacon)
1644 dev_kfree_skb(priv->ibss_beacon);
1645
1646 priv->ibss_beacon = beacon;
1647 mutex_unlock(&priv->mutex);
1648
bb8c093b 1649 iwl4965_send_beacon_cmd(priv);
b481de9c
ZY		 1650}
1651
4e39317d
EG		 1652/**
1653 * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1654 *
1655 * This callback is provided in order to send a statistics request.
1656 *
1657 * This timer function is continually reset to execute within
1658 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1659 * was received. We need to ensure we receive the statistics in order
1660 * to update the temperature used for calibrating the TXPOWER.
1661 */
1662static void iwl4965_bg_statistics_periodic(unsigned long data)
1663{
1664 struct iwl_priv *priv = (struct iwl_priv *)data;
1665
1666 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1667 return;
1668
1669 iwl_send_statistics_request(priv, CMD_ASYNC);
1670}
1671
c79dd5b5 1672static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
a55360e4 1673 struct iwl_rx_mem_buffer *rxb)
b481de9c 1674{
0a6857e7 1675#ifdef CONFIG_IWLWIFI_DEBUG
db11d634 1676 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
bb8c093b
CH		 1677 struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1678 u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
b481de9c
ZY		 1679
1680 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1681 "tsf %d %d rate %d\n",
1682 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
1683 beacon->beacon_notify_hdr.failure_frame,
1684 le32_to_cpu(beacon->ibss_mgr_status),
1685 le32_to_cpu(beacon->high_tsf),
1686 le32_to_cpu(beacon->low_tsf), rate);
1687#endif
1688
1689 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
1690 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1691 queue_work(priv->workqueue, &priv->beacon_update);
1692}
1693
1694/* Service response to REPLY_SCAN_CMD (0x80) */
c79dd5b5 1695static void iwl4965_rx_reply_scan(struct iwl_priv *priv,
a55360e4 1696 struct iwl_rx_mem_buffer *rxb)
b481de9c 1697{
0a6857e7 1698#ifdef CONFIG_IWLWIFI_DEBUG
db11d634 1699 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
bb8c093b
CH		 1700 struct iwl4965_scanreq_notification *notif =
1701 (struct iwl4965_scanreq_notification *)pkt->u.raw;
b481de9c
ZY		 1702
1703 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
1704#endif
1705}
1706
1707/* Service SCAN_START_NOTIFICATION (0x82) */
c79dd5b5 1708static void iwl4965_rx_scan_start_notif(struct iwl_priv *priv,
a55360e4 1709 struct iwl_rx_mem_buffer *rxb)
b481de9c 1710{
db11d634 1711 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
bb8c093b
CH		 1712 struct iwl4965_scanstart_notification *notif =
1713 (struct iwl4965_scanstart_notification *)pkt->u.raw;
b481de9c
ZY		 1714 priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
1715 IWL_DEBUG_SCAN("Scan start: "
1716 "%d [802.11%s] "
1717 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
1718 notif->channel,
1719 notif->band ? "bg" : "a",
1720 notif->tsf_high,
1721 notif->tsf_low, notif->status, notif->beacon_timer);
1722}
1723
1724/* Service SCAN_RESULTS_NOTIFICATION (0x83) */
c79dd5b5 1725static void iwl4965_rx_scan_results_notif(struct iwl_priv *priv,
a55360e4 1726 struct iwl_rx_mem_buffer *rxb)
b481de9c 1727{
db11d634 1728 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
bb8c093b
CH		 1729 struct iwl4965_scanresults_notification *notif =
1730 (struct iwl4965_scanresults_notification *)pkt->u.raw;
b481de9c
ZY		 1731
1732 IWL_DEBUG_SCAN("Scan ch.res: "
1733 "%d [802.11%s] "
1734 "(TSF: 0x%08X:%08X) - %d "
1735 "elapsed=%lu usec (%dms since last)\n",
1736 notif->channel,
1737 notif->band ? "bg" : "a",
1738 le32_to_cpu(notif->tsf_high),
1739 le32_to_cpu(notif->tsf_low),
1740 le32_to_cpu(notif->statistics[0]),
1741 le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
1742 jiffies_to_msecs(elapsed_jiffies
1743 (priv->last_scan_jiffies, jiffies)));
1744
1745 priv->last_scan_jiffies = jiffies;
7878a5a4 1746 priv->next_scan_jiffies = 0;
b481de9c
ZY		 1747}
1748
1749/* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
c79dd5b5 1750static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv,
a55360e4 1751 struct iwl_rx_mem_buffer *rxb)
b481de9c 1752{
db11d634 1753 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
bb8c093b 1754 struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
b481de9c
ZY		 1755
1756 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
1757 scan_notif->scanned_channels,
1758 scan_notif->tsf_low,
1759 scan_notif->tsf_high, scan_notif->status);
1760
1761 /* The HW is no longer scanning */
1762 clear_bit(STATUS_SCAN_HW, &priv->status);
1763
1764 /* The scan completion notification came in, so kill that timer... */
1765 cancel_delayed_work(&priv->scan_check);
1766
1767 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
1768 (priv->scan_bands == 2) ? "2.4" : "5.2",
1769 jiffies_to_msecs(elapsed_jiffies
1770 (priv->scan_pass_start, jiffies)));
1771
1772 /* Remove this scanned band from the list
1773 * of pending bands to scan */
1774 priv->scan_bands--;
1775
1776 /* If a request to abort was given, or the scan did not succeed
1777 * then we reset the scan state machine and terminate,
1778 * re-queuing another scan if one has been requested */
1779 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1780 IWL_DEBUG_INFO("Aborted scan completed.\n");
1781 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1782 } else {
1783 /* If there are more bands on this scan pass reschedule */
1784 if (priv->scan_bands > 0)
1785 goto reschedule;
1786 }
1787
1788 priv->last_scan_jiffies = jiffies;
7878a5a4 1789 priv->next_scan_jiffies = 0;
b481de9c
ZY		 1790 IWL_DEBUG_INFO("Setting scan to off\n");
1791
1792 clear_bit(STATUS_SCANNING, &priv->status);
1793
1794 IWL_DEBUG_INFO("Scan took %dms\n",
1795 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
1796
1797 queue_work(priv->workqueue, &priv->scan_completed);
1798
1799 return;
1800
1801reschedule:
1802 priv->scan_pass_start = jiffies;
1803 queue_work(priv->workqueue, &priv->request_scan);
1804}
1805
1806/* Handle notification from uCode that card's power state is changing
1807 * due to software, hardware, or critical temperature RFKILL */
c79dd5b5 1808static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
a55360e4 1809 struct iwl_rx_mem_buffer *rxb)
b481de9c 1810{
db11d634 1811 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
b481de9c
ZY		 1812 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1813 unsigned long status = priv->status;
1814
1815 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1816 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1817 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1818
1819 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1820 RF_CARD_DISABLED)) {
1821
3395f6e9 1822 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
b481de9c
ZY		 1823 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1824
3395f6e9
TW		 1825 if (!iwl_grab_nic_access(priv)) {
1826 iwl_write_direct32(
b481de9c
ZY		 1827 priv, HBUS_TARG_MBX_C,
1828 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1829
3395f6e9 1830 iwl_release_nic_access(priv);
b481de9c
ZY		 1831 }
1832
1833 if (!(flags & RXON_CARD_DISABLED)) {
3395f6e9 1834 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
b481de9c 1835 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3395f6e9
TW		 1836 if (!iwl_grab_nic_access(priv)) {
1837 iwl_write_direct32(
b481de9c
ZY		 1838 priv, HBUS_TARG_MBX_C,
1839 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1840
3395f6e9 1841 iwl_release_nic_access(priv);
b481de9c
ZY		 1842 }
1843 }
1844
1845 if (flags & RF_CARD_DISABLED) {
3395f6e9 1846 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
b481de9c 1847 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
3395f6e9
TW		 1848 iwl_read32(priv, CSR_UCODE_DRV_GP1);
1849 if (!iwl_grab_nic_access(priv))
1850 iwl_release_nic_access(priv);
b481de9c
ZY		 1851 }
1852 }
1853
1854 if (flags & HW_CARD_DISABLED)
1855 set_bit(STATUS_RF_KILL_HW, &priv->status);
1856 else
1857 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1858
1859
1860 if (flags & SW_CARD_DISABLED)
1861 set_bit(STATUS_RF_KILL_SW, &priv->status);
1862 else
1863 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1864
1865 if (!(flags & RXON_CARD_DISABLED))
bb8c093b 1866 iwl4965_scan_cancel(priv);
b481de9c
ZY		 1867
1868 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1869 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1870 (test_bit(STATUS_RF_KILL_SW, &status) !=
1871 test_bit(STATUS_RF_KILL_SW, &priv->status)))
1872 queue_work(priv->workqueue, &priv->rf_kill);
1873 else
1874 wake_up_interruptible(&priv->wait_command_queue);
1875}
1876
37a44211
RR		 1877/* Cache phy data (Rx signal strength, etc) for HT frame (REPLY_RX_PHY_CMD).
1878 * This will be used later in iwl4965_rx_reply_rx() for REPLY_RX_MPDU_CMD. */
1879static void iwl4965_rx_reply_rx_phy(struct iwl_priv *priv,
1880 struct iwl_rx_mem_buffer *rxb)
1881{
1882 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1883 priv->last_phy_res[0] = 1;
1884 memcpy(&priv->last_phy_res[1], &(pkt->u.raw[0]),
1885 sizeof(struct iwl4965_rx_phy_res));
1886}
1887
b481de9c 1888/**
bb8c093b 1889 * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
b481de9c
ZY		 1890 *
1891 * Setup the RX handlers for each of the reply types sent from the uCode
1892 * to the host.
1893 *
1894 * This function chains into the hardware specific files for them to setup
1895 * any hardware specific handlers as well.
1896 */
c79dd5b5 1897static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
b481de9c 1898{
885ba202 1899 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
bb8c093b
CH		 1900 priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1901 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
b481de9c 1902 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
bb8c093b
CH		 1903 iwl4965_rx_spectrum_measure_notif;
1904 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
b481de9c 1905 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
bb8c093b
CH		 1906 iwl4965_rx_pm_debug_statistics_notif;
1907 priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
b481de9c 1908
9fbab516
BC		 1909 /*
1910 * The same handler is used for both the REPLY to a discrete
1911 * statistics request from the host as well as for the periodic
1912 * statistics notifications (after received beacons) from the uCode.
b481de9c 1913 */
bb8c093b
CH		 1914 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
1915 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
37a44211 1916 /* scan handlers */
bb8c093b
CH		 1917 priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
1918 priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
b481de9c 1919 priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
bb8c093b 1920 iwl4965_rx_scan_results_notif;
b481de9c 1921 priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
bb8c093b 1922 iwl4965_rx_scan_complete_notif;
37a44211 1923 /* status change handler */
bb8c093b 1924 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
b481de9c 1925
c1354754
TW		 1926 priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1927 iwl_rx_missed_beacon_notif;
37a44211
RR		 1928 /* Rx handlers */
1929 priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl4965_rx_reply_rx_phy;
1930 priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl4965_rx_reply_rx;
9fbab516 1931 /* Set up hardware specific Rx handlers */
d4789efe 1932 priv->cfg->ops->lib->rx_handler_setup(priv);
b481de9c
ZY		 1933}
1934
5c0eef96
MA		 1935/*
1936 * this should be called while priv->lock is locked
1937*/
a55360e4 1938static void __iwl_rx_replenish(struct iwl_priv *priv)
b481de9c 1939{
a55360e4
TW		 1940 iwl_rx_allocate(priv);
1941 iwl_rx_queue_restock(priv);
b481de9c
ZY		 1942}
1943
b481de9c
ZY		 1944
1945/**
a55360e4 1946 * iwl_rx_handle - Main entry function for receiving responses from uCode
b481de9c
ZY		 1947 *
1948 * Uses the priv->rx_handlers callback function array to invoke
1949 * the appropriate handlers, including command responses,
1950 * frame-received notifications, and other notifications.
1951 */
a55360e4 1952void iwl_rx_handle(struct iwl_priv *priv)
b481de9c 1953{
a55360e4 1954 struct iwl_rx_mem_buffer *rxb;
db11d634 1955 struct iwl_rx_packet *pkt;
a55360e4 1956 struct iwl_rx_queue *rxq = &priv->rxq;
b481de9c
ZY		 1957 u32 r, i;
1958 int reclaim;
1959 unsigned long flags;
5c0eef96 1960 u8 fill_rx = 0;
d68ab680 1961 u32 count = 8;
b481de9c 1962
6440adb5
CB		 1963 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1964 * buffer that the driver may process (last buffer filled by ucode). */
d67f5489 1965 r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
b481de9c
ZY		 1966 i = rxq->read;
1967
1968 /* Rx interrupt, but nothing sent from uCode */
1969 if (i == r)
f3d67999 1970 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
b481de9c 1971
a55360e4 1972 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
5c0eef96
MA		 1973 fill_rx = 1;
1974
b481de9c
ZY		 1975 while (i != r) {
1976 rxb = rxq->queue[i];
1977
9fbab516 1978 /* If an RXB doesn't have a Rx queue slot associated with it,
b481de9c
ZY		 1979 * then a bug has been introduced in the queue refilling
1980 * routines -- catch it here */
1981 BUG_ON(rxb == NULL);
1982
1983 rxq->queue[i] = NULL;
1984
1985 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
5425e490 1986 priv->hw_params.rx_buf_size,
b481de9c 1987 PCI_DMA_FROMDEVICE);
db11d634 1988 pkt = (struct iwl_rx_packet *)rxb->skb->data;
b481de9c
ZY		 1989
1990 /* Reclaim a command buffer only if this packet is a response
1991 * to a (driver-originated) command.
1992 * If the packet (e.g. Rx frame) originated from uCode,
1993 * there is no command buffer to reclaim.
1994 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1995 * but apparently a few don't get set; catch them here. */
1996 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1997 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
857485c0 1998 (pkt->hdr.cmd != REPLY_RX) &&
cfe01709 1999 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
b481de9c
ZY		 2000 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
2001 (pkt->hdr.cmd != REPLY_TX);
2002
2003 /* Based on type of command response or notification,
2004 * handle those that need handling via function in
bb8c093b 2005 * rx_handlers table. See iwl4965_setup_rx_handlers() */
b481de9c 2006 if (priv->rx_handlers[pkt->hdr.cmd]) {
f3d67999
EK		 2007 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
2008 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
b481de9c
ZY		 2009 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
2010 } else {
2011 /* No handling needed */
f3d67999 2012 IWL_DEBUG(IWL_DL_RX,
b481de9c
ZY		 2013 "r %d i %d No handler needed for %s, 0x%02x\n",
2014 r, i, get_cmd_string(pkt->hdr.cmd),
2015 pkt->hdr.cmd);
2016 }
2017
2018 if (reclaim) {
9fbab516 2019 /* Invoke any callbacks, transfer the skb to caller, and
857485c0 2020 * fire off the (possibly) blocking iwl_send_cmd()
b481de9c
ZY		 2021 * as we reclaim the driver command queue */
2022 if (rxb && rxb->skb)
17b88929 2023 iwl_tx_cmd_complete(priv, rxb);
b481de9c
ZY		 2024 else
2025 IWL_WARNING("Claim null rxb?\n");
2026 }
2027
2028 /* For now we just don't re-use anything. We can tweak this
2029 * later to try and re-use notification packets and SKBs that
2030 * fail to Rx correctly */
2031 if (rxb->skb != NULL) {
2032 priv->alloc_rxb_skb--;
2033 dev_kfree_skb_any(rxb->skb);
2034 rxb->skb = NULL;
2035 }
2036
2037 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
5425e490 2038 priv->hw_params.rx_buf_size,
9ee1ba47 2039 PCI_DMA_FROMDEVICE);
b481de9c
ZY		 2040 spin_lock_irqsave(&rxq->lock, flags);
2041 list_add_tail(&rxb->list, &priv->rxq.rx_used);
2042 spin_unlock_irqrestore(&rxq->lock, flags);
2043 i = (i + 1) & RX_QUEUE_MASK;
5c0eef96
MA		 2044 /* If there are a lot of unused frames,
2045 * restock the Rx queue so ucode wont assert. */
2046 if (fill_rx) {
2047 count++;
2048 if (count >= 8) {
2049 priv->rxq.read = i;
a55360e4 2050 __iwl_rx_replenish(priv);
5c0eef96
MA		 2051 count = 0;
2052 }
2053 }
b481de9c
ZY		 2054 }
2055
2056 /* Backtrack one entry */
2057 priv->rxq.read = i;
a55360e4
TW		 2058 iwl_rx_queue_restock(priv);
2059}
2060/* Convert linear signal-to-noise ratio into dB */
2061static u8 ratio2dB[100] = {
2062/* 0 1 2 3 4 5 6 7 8 9 */
2063 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
2064 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
2065 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
2066 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
2067 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
2068 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
2069 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
2070 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
2071 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
2072 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
2073};
2074
2075/* Calculates a relative dB value from a ratio of linear
2076 * (i.e. not dB) signal levels.
2077 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
2078int iwl4965_calc_db_from_ratio(int sig_ratio)
2079{
2080 /* 1000:1 or higher just report as 60 dB */
2081 if (sig_ratio >= 1000)
2082 return 60;
2083
2084 /* 100:1 or higher, divide by 10 and use table,
2085 * add 20 dB to make up for divide by 10 */
2086 if (sig_ratio >= 100)
2087 return (20 + (int)ratio2dB[sig_ratio/10]);
2088
2089 /* We shouldn't see this */
2090 if (sig_ratio < 1)
2091 return 0;
2092
2093 /* Use table for ratios 1:1 - 99:1 */
2094 return (int)ratio2dB[sig_ratio];
2095}
2096
2097#define PERFECT_RSSI (-20) /* dBm */
2098#define WORST_RSSI (-95) /* dBm */
2099#define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
2100
2101/* Calculate an indication of rx signal quality (a percentage, not dBm!).
2102 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
2103 * about formulas used below. */
2104int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
2105{
2106 int sig_qual;
2107 int degradation = PERFECT_RSSI - rssi_dbm;
2108
2109 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
2110 * as indicator; formula is (signal dbm - noise dbm).
2111 * SNR at or above 40 is a great signal (100%).
2112 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
2113 * Weakest usable signal is usually 10 - 15 dB SNR. */
2114 if (noise_dbm) {
2115 if (rssi_dbm - noise_dbm >= 40)
2116 return 100;
2117 else if (rssi_dbm < noise_dbm)
2118 return 0;
2119 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
2120
2121 /* Else use just the signal level.
2122 * This formula is a least squares fit of data points collected and
2123 * compared with a reference system that had a percentage (%) display
2124 * for signal quality. */
2125 } else
2126 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
2127 (15 * RSSI_RANGE + 62 * degradation)) /
2128 (RSSI_RANGE * RSSI_RANGE);
2129
2130 if (sig_qual > 100)
2131 sig_qual = 100;
2132 else if (sig_qual < 1)
2133 sig_qual = 0;
2134
2135 return sig_qual;
b481de9c
ZY		 2136}
2137
0a6857e7 2138#ifdef CONFIG_IWLWIFI_DEBUG
bf403db8 2139static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
b481de9c 2140{
c1adf9fb 2141 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
0795af57
JP		 2142 DECLARE_MAC_BUF(mac);
2143
b481de9c 2144 IWL_DEBUG_RADIO("RX CONFIG:\n");
bf403db8 2145 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
b481de9c
ZY		 2146 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
2147 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
2148 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
2149 le32_to_cpu(rxon->filter_flags));
2150 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
2151 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
2152 rxon->ofdm_basic_rates);
2153 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
0795af57
JP		 2154 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
2155 print_mac(mac, rxon->node_addr));
2156 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
2157 print_mac(mac, rxon->bssid_addr));
b481de9c
ZY		 2158 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
2159}
2160#endif
2161
c79dd5b5 2162static void iwl4965_enable_interrupts(struct iwl_priv *priv)
b481de9c
ZY		 2163{
2164 IWL_DEBUG_ISR("Enabling interrupts\n");
2165 set_bit(STATUS_INT_ENABLED, &priv->status);
3395f6e9 2166 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
b481de9c
ZY		 2167}
2168
0359facc
MA		 2169/* call this function to flush any scheduled tasklet */
2170static inline void iwl_synchronize_irq(struct iwl_priv *priv)
2171{
2172 /* wait to make sure we flush pedding tasklet*/
2173 synchronize_irq(priv->pci_dev->irq);
2174 tasklet_kill(&priv->irq_tasklet);
2175}
2176
c79dd5b5 2177static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
b481de9c
ZY		 2178{
2179 clear_bit(STATUS_INT_ENABLED, &priv->status);
2180
2181 /* disable interrupts from uCode/NIC to host */
3395f6e9 2182 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
b481de9c
ZY		 2183
2184 /* acknowledge/clear/reset any interrupts still pending
2185 * from uCode or flow handler (Rx/Tx DMA) */
3395f6e9
TW		 2186 iwl_write32(priv, CSR_INT, 0xffffffff);
2187 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
b481de9c
ZY		 2188 IWL_DEBUG_ISR("Disabled interrupts\n");
2189}
2190
b481de9c 2191
b481de9c 2192/**
bb8c093b 2193 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
b481de9c 2194 */
c79dd5b5 2195static void iwl4965_irq_handle_error(struct iwl_priv *priv)
b481de9c 2196{
bb8c093b 2197 /* Set the FW error flag -- cleared on iwl4965_down */
b481de9c
ZY		 2198 set_bit(STATUS_FW_ERROR, &priv->status);
2199
2200 /* Cancel currently queued command. */
2201 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
2202
0a6857e7 2203#ifdef CONFIG_IWLWIFI_DEBUG
bf403db8 2204 if (priv->debug_level & IWL_DL_FW_ERRORS) {
ede0cba4 2205 iwl_dump_nic_error_log(priv);
189a2b59 2206 iwl_dump_nic_event_log(priv);
bf403db8 2207 iwl4965_print_rx_config_cmd(priv);
b481de9c
ZY		 2208 }
2209#endif
2210
2211 wake_up_interruptible(&priv->wait_command_queue);
2212
2213 /* Keep the restart process from trying to send host
2214 * commands by clearing the INIT status bit */
2215 clear_bit(STATUS_READY, &priv->status);
2216
2217 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
f3d67999 2218 IWL_DEBUG(IWL_DL_FW_ERRORS,
b481de9c
ZY		 2219 "Restarting adapter due to uCode error.\n");
2220
3109ece1 2221 if (iwl_is_associated(priv)) {
b481de9c
ZY		 2222 memcpy(&priv->recovery_rxon, &priv->active_rxon,
2223 sizeof(priv->recovery_rxon));
2224 priv->error_recovering = 1;
2225 }
3a1081e8
EK		 2226 if (priv->cfg->mod_params->restart_fw)
2227 queue_work(priv->workqueue, &priv->restart);
b481de9c
ZY		 2228 }
2229}
2230
c79dd5b5 2231static void iwl4965_error_recovery(struct iwl_priv *priv)
b481de9c
ZY		 2232{
2233 unsigned long flags;
2234
2235 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
2236 sizeof(priv->staging_rxon));
2237 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
bb8c093b 2238 iwl4965_commit_rxon(priv);
b481de9c 2239
4f40e4d9 2240 iwl_rxon_add_station(priv, priv->bssid, 1);
b481de9c
ZY		 2241
2242 spin_lock_irqsave(&priv->lock, flags);
2243 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
2244 priv->error_recovering = 0;
2245 spin_unlock_irqrestore(&priv->lock, flags);
2246}
2247
c79dd5b5 2248static void iwl4965_irq_tasklet(struct iwl_priv *priv)
b481de9c
ZY		 2249{
2250 u32 inta, handled = 0;
2251 u32 inta_fh;
2252 unsigned long flags;
0a6857e7 2253#ifdef CONFIG_IWLWIFI_DEBUG
b481de9c
ZY		 2254 u32 inta_mask;
2255#endif
2256
2257 spin_lock_irqsave(&priv->lock, flags);
2258
2259 /* Ack/clear/reset pending uCode interrupts.
2260 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
2261 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
3395f6e9
TW		 2262 inta = iwl_read32(priv, CSR_INT);
2263 iwl_write32(priv, CSR_INT, inta);
b481de9c
ZY		 2264
2265 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
2266 * Any new interrupts that happen after this, either while we're
2267 * in this tasklet, or later, will show up in next ISR/tasklet. */
3395f6e9
TW		 2268 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2269 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
b481de9c 2270
0a6857e7 2271#ifdef CONFIG_IWLWIFI_DEBUG
bf403db8 2272 if (priv->debug_level & IWL_DL_ISR) {
9fbab516 2273 /* just for debug */
3395f6e9 2274 inta_mask = iwl_read32(priv, CSR_INT_MASK);
b481de9c
ZY		 2275 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2276 inta, inta_mask, inta_fh);
2277 }
2278#endif
2279
2280 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
2281 * atomic, make sure that inta covers all the interrupts that
2282 * we've discovered, even if FH interrupt came in just after
2283 * reading CSR_INT. */
6f83eaa1 2284 if (inta_fh & CSR49_FH_INT_RX_MASK)
b481de9c 2285 inta |= CSR_INT_BIT_FH_RX;
6f83eaa1 2286 if (inta_fh & CSR49_FH_INT_TX_MASK)
b481de9c
ZY		 2287 inta |= CSR_INT_BIT_FH_TX;
2288
2289 /* Now service all interrupt bits discovered above. */
2290 if (inta & CSR_INT_BIT_HW_ERR) {
2291 IWL_ERROR("Microcode HW error detected. Restarting.\n");
2292
2293 /* Tell the device to stop sending interrupts */
bb8c093b 2294 iwl4965_disable_interrupts(priv);
b481de9c 2295
bb8c093b 2296 iwl4965_irq_handle_error(priv);
b481de9c
ZY		 2297
2298 handled |= CSR_INT_BIT_HW_ERR;
2299
2300 spin_unlock_irqrestore(&priv->lock, flags);
2301
2302 return;
2303 }
2304
0a6857e7 2305#ifdef CONFIG_IWLWIFI_DEBUG
bf403db8 2306 if (priv->debug_level & (IWL_DL_ISR)) {
b481de9c 2307 /* NIC fires this, but we don't use it, redundant with WAKEUP */
25c03d8e
JP		 2308 if (inta & CSR_INT_BIT_SCD)
2309 IWL_DEBUG_ISR("Scheduler finished to transmit "
2310 "the frame/frames.\n");
b481de9c
ZY		 2311
2312 /* Alive notification via Rx interrupt will do the real work */
2313 if (inta & CSR_INT_BIT_ALIVE)
2314 IWL_DEBUG_ISR("Alive interrupt\n");
2315 }
2316#endif
2317 /* Safely ignore these bits for debug checks below */
25c03d8e 2318 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
b481de9c 2319
9fbab516 2320 /* HW RF KILL switch toggled */
b481de9c
ZY		 2321 if (inta & CSR_INT_BIT_RF_KILL) {
2322 int hw_rf_kill = 0;
3395f6e9 2323 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
b481de9c
ZY		 2324 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
2325 hw_rf_kill = 1;
2326
f3d67999 2327 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
b481de9c
ZY		 2328 hw_rf_kill ? "disable radio":"enable radio");
2329
2330 /* Queue restart only if RF_KILL switch was set to "kill"
2331 * when we loaded driver, and is now set to "enable".
2332 * After we're Alive, RF_KILL gets handled by
3230455d 2333 * iwl4965_rx_card_state_notif() */
53e49093
ZY		 2334 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
2335 clear_bit(STATUS_RF_KILL_HW, &priv->status);
b481de9c 2336 queue_work(priv->workqueue, &priv->restart);
53e49093 2337 }
b481de9c
ZY		 2338
2339 handled |= CSR_INT_BIT_RF_KILL;
2340 }
2341
9fbab516 2342 /* Chip got too hot and stopped itself */
b481de9c
ZY		 2343 if (inta & CSR_INT_BIT_CT_KILL) {
2344 IWL_ERROR("Microcode CT kill error detected.\n");
2345 handled |= CSR_INT_BIT_CT_KILL;
2346 }
2347
2348 /* Error detected by uCode */
2349 if (inta & CSR_INT_BIT_SW_ERR) {
2350 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
2351 inta);
bb8c093b 2352 iwl4965_irq_handle_error(priv);
b481de9c
ZY		 2353 handled |= CSR_INT_BIT_SW_ERR;
2354 }
2355
2356 /* uCode wakes up after power-down sleep */
2357 if (inta & CSR_INT_BIT_WAKEUP) {
2358 IWL_DEBUG_ISR("Wakeup interrupt\n");
a55360e4 2359 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
babcebfa
TW		 2360 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
2361 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
2362 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
2363 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
2364 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
2365 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
b481de9c
ZY		 2366
2367 handled |= CSR_INT_BIT_WAKEUP;
2368 }
2369
2370 /* All uCode command responses, including Tx command responses,
2371 * Rx "responses" (frame-received notification), and other
2372 * notifications from uCode come through here*/
2373 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
a55360e4 2374 iwl_rx_handle(priv);
b481de9c
ZY		 2375 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
2376 }
2377
2378 if (inta & CSR_INT_BIT_FH_TX) {
2379 IWL_DEBUG_ISR("Tx interrupt\n");
2380 handled |= CSR_INT_BIT_FH_TX;
dbb983b7
RR		 2381 /* FH finished to write, send event */
2382 priv->ucode_write_complete = 1;
2383 wake_up_interruptible(&priv->wait_command_queue);
b481de9c
ZY		 2384 }
2385
2386 if (inta & ~handled)
2387 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
2388
2389 if (inta & ~CSR_INI_SET_MASK) {
2390 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
2391 inta & ~CSR_INI_SET_MASK);
2392 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
2393 }
2394
2395 /* Re-enable all interrupts */
0359facc
MA		 2396 /* only Re-enable if diabled by irq */
2397 if (test_bit(STATUS_INT_ENABLED, &priv->status))
2398 iwl4965_enable_interrupts(priv);
b481de9c 2399
0a6857e7 2400#ifdef CONFIG_IWLWIFI_DEBUG
bf403db8 2401 if (priv->debug_level & (IWL_DL_ISR)) {
3395f6e9
TW		 2402 inta = iwl_read32(priv, CSR_INT);
2403 inta_mask = iwl_read32(priv, CSR_INT_MASK);
2404 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
b481de9c
ZY		 2405 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
2406 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
2407 }
2408#endif
2409 spin_unlock_irqrestore(&priv->lock, flags);
2410}
2411
bb8c093b 2412static irqreturn_t iwl4965_isr(int irq, void *data)
b481de9c 2413{
c79dd5b5 2414 struct iwl_priv *priv = data;
b481de9c
ZY		 2415 u32 inta, inta_mask;
2416 u32 inta_fh;
2417 if (!priv)
2418 return IRQ_NONE;
2419
2420 spin_lock(&priv->lock);
2421
2422 /* Disable (but don't clear!) interrupts here to avoid
2423 * back-to-back ISRs and sporadic interrupts from our NIC.
2424 * If we have something to service, the tasklet will re-enable ints.
2425 * If we *don't* have something, we'll re-enable before leaving here. */
3395f6e9
TW		 2426 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
2427 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
b481de9c
ZY		 2428
2429 /* Discover which interrupts are active/pending */
3395f6e9
TW		 2430 inta = iwl_read32(priv, CSR_INT);
2431 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
b481de9c
ZY		 2432
2433 /* Ignore interrupt if there's nothing in NIC to service.
2434 * This may be due to IRQ shared with another device,
2435 * or due to sporadic interrupts thrown from our NIC. */
2436 if (!inta && !inta_fh) {
2437 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
2438 goto none;
2439 }
2440
2441 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
66fbb541
ON		 2442 /* Hardware disappeared. It might have already raised
2443 * an interrupt */
b481de9c 2444 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
66fbb541 2445 goto unplugged;
b481de9c
ZY		 2446 }
2447
2448 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2449 inta, inta_mask, inta_fh);
2450
25c03d8e
JP		 2451 inta &= ~CSR_INT_BIT_SCD;
2452
bb8c093b 2453 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
25c03d8e
JP		 2454 if (likely(inta || inta_fh))
2455 tasklet_schedule(&priv->irq_tasklet);
b481de9c 2456
66fbb541
ON		 2457 unplugged:
2458 spin_unlock(&priv->lock);
b481de9c
ZY		 2459 return IRQ_HANDLED;
2460
2461 none:
2462 /* re-enable interrupts here since we don't have anything to service. */
0359facc
MA		 2463 /* only Re-enable if diabled by irq */
2464 if (test_bit(STATUS_INT_ENABLED, &priv->status))
2465 iwl4965_enable_interrupts(priv);
b481de9c
ZY		 2466 spin_unlock(&priv->lock);
2467 return IRQ_NONE;
2468}
2469
b481de9c
ZY		 2470/* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
2471 * sending probe req. This should be set long enough to hear probe responses
2472 * from more than one AP. */
2473#define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
2474#define IWL_ACTIVE_DWELL_TIME_52 (10)
2475
2476/* For faster active scanning, scan will move to the next channel if fewer than
2477 * PLCP_QUIET_THRESH packets are heard on this channel within
2478 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
2479 * time if it's a quiet channel (nothing responded to our probe, and there's
2480 * no other traffic).
2481 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
2482#define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
2483#define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
2484
2485/* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
2486 * Must be set longer than active dwell time.
2487 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
2488#define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
2489#define IWL_PASSIVE_DWELL_TIME_52 (10)
2490#define IWL_PASSIVE_DWELL_BASE (100)
2491#define IWL_CHANNEL_TUNE_TIME 5
2492
c79dd5b5 2493static inline u16 iwl4965_get_active_dwell_time(struct iwl_priv *priv,
8318d78a 2494 enum ieee80211_band band)
b481de9c 2495{
8318d78a 2496 if (band == IEEE80211_BAND_5GHZ)
b481de9c
ZY		 2497 return IWL_ACTIVE_DWELL_TIME_52;
2498 else
2499 return IWL_ACTIVE_DWELL_TIME_24;
2500}
2501
c79dd5b5 2502static u16 iwl4965_get_passive_dwell_time(struct iwl_priv *priv,
8318d78a 2503 enum ieee80211_band band)
b481de9c 2504{
8318d78a
JB		 2505 u16 active = iwl4965_get_active_dwell_time(priv, band);
2506 u16 passive = (band != IEEE80211_BAND_5GHZ) ?
b481de9c
ZY		 2507 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
2508 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
2509
3109ece1 2510 if (iwl_is_associated(priv)) {
b481de9c
ZY		 2511 /* If we're associated, we clamp the maximum passive
2512 * dwell time to be 98% of the beacon interval (minus
2513 * 2 * channel tune time) */
2514 passive = priv->beacon_int;
2515 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
2516 passive = IWL_PASSIVE_DWELL_BASE;
2517 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
2518 }
2519
2520 if (passive <= active)
2521 passive = active + 1;
2522
2523 return passive;
2524}
2525
c79dd5b5 2526static int iwl4965_get_channels_for_scan(struct iwl_priv *priv,
8318d78a 2527 enum ieee80211_band band,
b481de9c 2528 u8 is_active, u8 direct_mask,
bb8c093b 2529 struct iwl4965_scan_channel *scan_ch)
b481de9c
ZY		 2530{
2531 const struct ieee80211_channel *channels = NULL;
8318d78a 2532 const struct ieee80211_supported_band *sband;
bf85ea4f 2533 const struct iwl_channel_info *ch_info;
b481de9c
ZY		 2534 u16 passive_dwell = 0;
2535 u16 active_dwell = 0;
2536 int added, i;
2537
d1141dfb 2538 sband = iwl_get_hw_mode(priv, band);
8318d78a 2539 if (!sband)
b481de9c
ZY		 2540 return 0;
2541
8318d78a 2542 channels = sband->channels;
b481de9c 2543
8318d78a
JB		 2544 active_dwell = iwl4965_get_active_dwell_time(priv, band);
2545 passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
b481de9c 2546
8318d78a 2547 for (i = 0, added = 0; i < sband->n_channels; i++) {
182e2e66
JB		 2548 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
2549 continue;
2550
8318d78a 2551 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
b481de9c 2552
8622e705 2553 ch_info = iwl_get_channel_info(priv, band,
9fbab516 2554 scan_ch->channel);
b481de9c
ZY		 2555 if (!is_channel_valid(ch_info)) {
2556 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
2557 scan_ch->channel);
2558 continue;
2559 }
2560
2561 if (!is_active || is_channel_passive(ch_info) ||
8318d78a 2562 (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
b481de9c
ZY		 2563 scan_ch->type = 0; /* passive */
2564 else
2565 scan_ch->type = 1; /* active */
2566
2567 if (scan_ch->type & 1)
2568 scan_ch->type |= (direct_mask << 1);
2569
b481de9c
ZY		 2570 scan_ch->active_dwell = cpu_to_le16(active_dwell);
2571 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
2572
9fbab516 2573 /* Set txpower levels to defaults */
b481de9c
ZY		 2574 scan_ch->tpc.dsp_atten = 110;
2575 /* scan_pwr_info->tpc.dsp_atten; */
2576
2577 /*scan_pwr_info->tpc.tx_gain; */
8318d78a 2578 if (band == IEEE80211_BAND_5GHZ)
b481de9c
ZY		 2579 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
2580 else {
2581 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
2582 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
9fbab516 2583 * power level:
8a1b0245 2584 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
b481de9c
ZY		 2585 */
2586 }
2587
2588 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
2589 scan_ch->channel,
2590 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
2591 (scan_ch->type & 1) ?
2592 active_dwell : passive_dwell);
2593
2594 scan_ch++;
2595 added++;
2596 }
2597
2598 IWL_DEBUG_SCAN("total channels to scan %d \n", added);
2599 return added;
2600}
2601
b481de9c
ZY		 2602/******************************************************************************
2603 *
2604 * uCode download functions
2605 *
2606 ******************************************************************************/
2607
c79dd5b5 2608static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
b481de9c 2609{
98c92211
TW		 2610 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
2611 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
2612 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2613 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
2614 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2615 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
b481de9c
ZY		 2616}
2617
edcdf8b2
RR		 2618static void iwl4965_nic_start(struct iwl_priv *priv)
2619{
2620 /* Remove all resets to allow NIC to operate */
2621 iwl_write32(priv, CSR_RESET, 0);
2622}
2623
2624
b481de9c 2625/**
bb8c093b 2626 * iwl4965_read_ucode - Read uCode images from disk file.
b481de9c
ZY		 2627 *
2628 * Copy into buffers for card to fetch via bus-mastering
2629 */
c79dd5b5 2630static int iwl4965_read_ucode(struct iwl_priv *priv)
b481de9c 2631{
bb8c093b 2632 struct iwl4965_ucode *ucode;
90e759d1 2633 int ret;
b481de9c 2634 const struct firmware *ucode_raw;
4bf775cd 2635 const char *name = priv->cfg->fw_name;
b481de9c
ZY		 2636 u8 *src;
2637 size_t len;
2638 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
2639
2640 /* Ask kernel firmware_class module to get the boot firmware off disk.
2641 * request_firmware() is synchronous, file is in memory on return. */
90e759d1
TW		 2642 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
2643 if (ret < 0) {
2644 IWL_ERROR("%s firmware file req failed: Reason %d\n",
2645 name, ret);
b481de9c
ZY		 2646 goto error;
2647 }
2648
2649 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
2650 name, ucode_raw->size);
2651
2652 /* Make sure that we got at least our header! */
2653 if (ucode_raw->size < sizeof(*ucode)) {
2654 IWL_ERROR("File size way too small!\n");
90e759d1 2655 ret = -EINVAL;
b481de9c
ZY		 2656 goto err_release;
2657 }
2658
2659 /* Data from ucode file: header followed by uCode images */
2660 ucode = (void *)ucode_raw->data;
2661
2662 ver = le32_to_cpu(ucode->ver);
2663 inst_size = le32_to_cpu(ucode->inst_size);
2664 data_size = le32_to_cpu(ucode->data_size);
2665 init_size = le32_to_cpu(ucode->init_size);
2666 init_data_size = le32_to_cpu(ucode->init_data_size);
2667 boot_size = le32_to_cpu(ucode->boot_size);
2668
2669 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
2670 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
2671 inst_size);
2672 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
2673 data_size);
2674 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
2675 init_size);
2676 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
2677 init_data_size);
2678 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
2679 boot_size);
2680
2681 /* Verify size of file vs. image size info in file's header */
2682 if (ucode_raw->size < sizeof(*ucode) +
2683 inst_size + data_size + init_size +
2684 init_data_size + boot_size) {
2685
2686 IWL_DEBUG_INFO("uCode file size %d too small\n",
2687 (int)ucode_raw->size);
90e759d1 2688 ret = -EINVAL;
b481de9c
ZY		 2689 goto err_release;
2690 }
2691
2692 /* Verify that uCode images will fit in card's SRAM */
099b40b7 2693 if (inst_size > priv->hw_params.max_inst_size) {
90e759d1
TW		 2694 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
2695 inst_size);
2696 ret = -EINVAL;
b481de9c
ZY		 2697 goto err_release;
2698 }
2699
099b40b7 2700 if (data_size > priv->hw_params.max_data_size) {
90e759d1
TW		 2701 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
2702 data_size);
2703 ret = -EINVAL;
b481de9c
ZY		 2704 goto err_release;
2705 }
099b40b7 2706 if (init_size > priv->hw_params.max_inst_size) {
b481de9c 2707 IWL_DEBUG_INFO
90e759d1
TW		 2708 ("uCode init instr len %d too large to fit in\n",
2709 init_size);
2710 ret = -EINVAL;
b481de9c
ZY		 2711 goto err_release;
2712 }
099b40b7 2713 if (init_data_size > priv->hw_params.max_data_size) {
b481de9c 2714 IWL_DEBUG_INFO
90e759d1
TW		 2715 ("uCode init data len %d too large to fit in\n",
2716 init_data_size);
2717 ret = -EINVAL;
b481de9c
ZY		 2718 goto err_release;
2719 }
099b40b7 2720 if (boot_size > priv->hw_params.max_bsm_size) {
b481de9c 2721 IWL_DEBUG_INFO
90e759d1
TW		 2722 ("uCode boot instr len %d too large to fit in\n",
2723 boot_size);
2724 ret = -EINVAL;
b481de9c
ZY		 2725 goto err_release;
2726 }
2727
2728 /* Allocate ucode buffers for card's bus-master loading ... */
2729
2730 /* Runtime instructions and 2 copies of data:
2731 * 1) unmodified from disk
2732 * 2) backup cache for save/restore during power-downs */
2733 priv->ucode_code.len = inst_size;
98c92211 2734 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
b481de9c
ZY		 2735
2736 priv->ucode_data.len = data_size;
98c92211 2737 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
b481de9c
ZY		 2738
2739 priv->ucode_data_backup.len = data_size;
98c92211 2740 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
b481de9c
ZY		 2741
2742 /* Initialization instructions and data */
90e759d1
TW		 2743 if (init_size && init_data_size) {
2744 priv->ucode_init.len = init_size;
98c92211 2745 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
90e759d1
TW		 2746
2747 priv->ucode_init_data.len = init_data_size;
98c92211 2748 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
90e759d1
TW		 2749
2750 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2751 goto err_pci_alloc;
2752 }
b481de9c
ZY		 2753
2754 /* Bootstrap (instructions only, no data) */
90e759d1
TW		 2755 if (boot_size) {
2756 priv->ucode_boot.len = boot_size;
98c92211 2757 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
b481de9c 2758
90e759d1
TW		 2759 if (!priv->ucode_boot.v_addr)
2760 goto err_pci_alloc;
2761 }
b481de9c
ZY		 2762
2763 /* Copy images into buffers for card's bus-master reads ... */
2764
2765 /* Runtime instructions (first block of data in file) */
2766 src = &ucode->data[0];
2767 len = priv->ucode_code.len;
90e759d1 2768 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
b481de9c
ZY		 2769 memcpy(priv->ucode_code.v_addr, src, len);
2770 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2771 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2772
2773 /* Runtime data (2nd block)
bb8c093b 2774 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
b481de9c
ZY		 2775 src = &ucode->data[inst_size];
2776 len = priv->ucode_data.len;
90e759d1 2777 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
b481de9c
ZY		 2778 memcpy(priv->ucode_data.v_addr, src, len);
2779 memcpy(priv->ucode_data_backup.v_addr, src, len);
2780
2781 /* Initialization instructions (3rd block) */
2782 if (init_size) {
2783 src = &ucode->data[inst_size + data_size];
2784 len = priv->ucode_init.len;
90e759d1
TW		 2785 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
2786 len);
b481de9c
ZY		 2787 memcpy(priv->ucode_init.v_addr, src, len);
2788 }
2789
2790 /* Initialization data (4th block) */
2791 if (init_data_size) {
2792 src = &ucode->data[inst_size + data_size + init_size];
2793 len = priv->ucode_init_data.len;
90e759d1
TW		 2794 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
2795 len);
b481de9c
ZY		 2796 memcpy(priv->ucode_init_data.v_addr, src, len);
2797 }
2798
2799 /* Bootstrap instructions (5th block) */
2800 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
2801 len = priv->ucode_boot.len;
90e759d1 2802 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
b481de9c
ZY		 2803 memcpy(priv->ucode_boot.v_addr, src, len);
2804
2805 /* We have our copies now, allow OS release its copies */
2806 release_firmware(ucode_raw);
2807 return 0;
2808
2809 err_pci_alloc:
2810 IWL_ERROR("failed to allocate pci memory\n");
90e759d1 2811 ret = -ENOMEM;
bb8c093b 2812 iwl4965_dealloc_ucode_pci(priv);
b481de9c
ZY		 2813
2814 err_release:
2815 release_firmware(ucode_raw);
2816
2817 error:
90e759d1 2818 return ret;
b481de9c
ZY		 2819}
2820
b481de9c 2821/**
4a4a9e81 2822 * iwl_alive_start - called after REPLY_ALIVE notification received
b481de9c 2823 * from protocol/runtime uCode (initialization uCode's
4a4a9e81 2824 * Alive gets handled by iwl_init_alive_start()).
b481de9c 2825 */
4a4a9e81 2826static void iwl_alive_start(struct iwl_priv *priv)
b481de9c 2827{
57aab75a 2828 int ret = 0;
b481de9c
ZY		 2829
2830 IWL_DEBUG_INFO("Runtime Alive received.\n");
2831
2832 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2833 /* We had an error bringing up the hardware, so take it
2834 * all the way back down so we can try again */
2835 IWL_DEBUG_INFO("Alive failed.\n");
2836 goto restart;
2837 }
2838
2839 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2840 * This is a paranoid check, because we would not have gotten the
2841 * "runtime" alive if code weren't properly loaded. */
b0692f2f 2842 if (iwl_verify_ucode(priv)) {
b481de9c
ZY		 2843 /* Runtime instruction load was bad;
2844 * take it all the way back down so we can try again */
2845 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
2846 goto restart;
2847 }
2848
bf85ea4f 2849 iwlcore_clear_stations_table(priv);
57aab75a
TW		 2850 ret = priv->cfg->ops->lib->alive_notify(priv);
2851 if (ret) {
b481de9c 2852 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
57aab75a 2853 ret);
b481de9c
ZY		 2854 goto restart;
2855 }
2856
9fbab516 2857 /* After the ALIVE response, we can send host commands to 4965 uCode */
b481de9c
ZY		 2858 set_bit(STATUS_ALIVE, &priv->status);
2859
fee1247a 2860 if (iwl_is_rfkill(priv))
b481de9c
ZY		 2861 return;
2862
36d6825b 2863 ieee80211_wake_queues(priv->hw);
b481de9c
ZY		 2864
2865 priv->active_rate = priv->rates_mask;
2866 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2867
3109ece1 2868 if (iwl_is_associated(priv)) {
c1adf9fb
GG		 2869 struct iwl_rxon_cmd *active_rxon =
2870 (struct iwl_rxon_cmd *)&priv->active_rxon;
b481de9c
ZY		 2871
2872 memcpy(&priv->staging_rxon, &priv->active_rxon,
2873 sizeof(priv->staging_rxon));
2874 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2875 } else {
2876 /* Initialize our rx_config data */
bb8c093b 2877 iwl4965_connection_init_rx_config(priv);
b481de9c
ZY		 2878 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2879 }
2880
9fbab516 2881 /* Configure Bluetooth device coexistence support */
bb8c093b 2882 iwl4965_send_bt_config(priv);
b481de9c 2883
4a4a9e81
TW		 2884 iwl_reset_run_time_calib(priv);
2885
b481de9c 2886 /* Configure the adapter for unassociated operation */
bb8c093b 2887 iwl4965_commit_rxon(priv);
b481de9c
ZY		 2888
2889 /* At this point, the NIC is initialized and operational */
b481de9c 2890 iwl4965_rf_kill_ct_config(priv);
5a66926a 2891
fe00b5a5
RC		 2892 iwl_leds_register(priv);
2893
b481de9c 2894 IWL_DEBUG_INFO("ALIVE processing complete.\n");
a9f46786 2895 set_bit(STATUS_READY, &priv->status);
5a66926a 2896 wake_up_interruptible(&priv->wait_command_queue);
b481de9c
ZY		 2897
2898 if (priv->error_recovering)
bb8c093b 2899 iwl4965_error_recovery(priv);
b481de9c 2900
c8381fdc 2901 iwlcore_low_level_notify(priv, IWLCORE_START_EVT);
84363e6e 2902 ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
b481de9c
ZY		 2903 return;
2904
2905 restart:
2906 queue_work(priv->workqueue, &priv->restart);
2907}
2908
4e39317d 2909static void iwl_cancel_deferred_work(struct iwl_priv *priv);
b481de9c 2910
c79dd5b5 2911static void __iwl4965_down(struct iwl_priv *priv)
b481de9c
ZY		 2912{
2913 unsigned long flags;
2914 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
b481de9c
ZY		 2915
2916 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2917
b481de9c
ZY		 2918 if (!exit_pending)
2919 set_bit(STATUS_EXIT_PENDING, &priv->status);
2920
ab53d8af
MA		 2921 iwl_leds_unregister(priv);
2922
c8381fdc
MA		 2923 iwlcore_low_level_notify(priv, IWLCORE_STOP_EVT);
2924
bf85ea4f 2925 iwlcore_clear_stations_table(priv);
b481de9c
ZY		 2926
2927 /* Unblock any waiting calls */
2928 wake_up_interruptible_all(&priv->wait_command_queue);
2929
b481de9c
ZY		 2930 /* Wipe out the EXIT_PENDING status bit if we are not actually
2931 * exiting the module */
2932 if (!exit_pending)
2933 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2934
2935 /* stop and reset the on-board processor */
3395f6e9 2936 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
b481de9c
ZY		 2937
2938 /* tell the device to stop sending interrupts */
0359facc 2939 spin_lock_irqsave(&priv->lock, flags);
bb8c093b 2940 iwl4965_disable_interrupts(priv);
0359facc
MA		 2941 spin_unlock_irqrestore(&priv->lock, flags);
2942 iwl_synchronize_irq(priv);
b481de9c
ZY		 2943
2944 if (priv->mac80211_registered)
2945 ieee80211_stop_queues(priv->hw);
2946
bb8c093b 2947 /* If we have not previously called iwl4965_init() then
b481de9c 2948 * clear all bits but the RF Kill and SUSPEND bits and return */
fee1247a 2949 if (!iwl_is_init(priv)) {
b481de9c
ZY		 2950 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2951 STATUS_RF_KILL_HW |
2952 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2953 STATUS_RF_KILL_SW |
9788864e
RC		 2954 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2955 STATUS_GEO_CONFIGURED |
b481de9c
ZY		 2956 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2957 STATUS_IN_SUSPEND;
2958 goto exit;
2959 }
2960
2961 /* ...otherwise clear out all the status bits but the RF Kill and
2962 * SUSPEND bits and continue taking the NIC down. */
2963 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2964 STATUS_RF_KILL_HW |
2965 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2966 STATUS_RF_KILL_SW |
9788864e
RC		 2967 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2968 STATUS_GEO_CONFIGURED |
b481de9c
ZY		 2969 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2970 STATUS_IN_SUSPEND |
2971 test_bit(STATUS_FW_ERROR, &priv->status) <<
2972 STATUS_FW_ERROR;
2973
2974 spin_lock_irqsave(&priv->lock, flags);
3395f6e9 2975 iwl_clear_bit(priv, CSR_GP_CNTRL,
9fbab516 2976 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
b481de9c
ZY		 2977 spin_unlock_irqrestore(&priv->lock, flags);
2978
da1bc453 2979 iwl_txq_ctx_stop(priv);
b3bbacb7 2980 iwl_rxq_stop(priv);
b481de9c
ZY		 2981
2982 spin_lock_irqsave(&priv->lock, flags);
3395f6e9
TW		 2983 if (!iwl_grab_nic_access(priv)) {
2984 iwl_write_prph(priv, APMG_CLK_DIS_REG,
b481de9c 2985 APMG_CLK_VAL_DMA_CLK_RQT);
3395f6e9 2986 iwl_release_nic_access(priv);
b481de9c
ZY		 2987 }
2988 spin_unlock_irqrestore(&priv->lock, flags);
2989
2990 udelay(5);
2991
7f066108
TW		 2992 /* FIXME: apm_ops.suspend(priv) */
2993 priv->cfg->ops->lib->apm_ops.reset(priv);
399f4900 2994 priv->cfg->ops->lib->free_shared_mem(priv);
b481de9c
ZY		 2995
2996 exit:
885ba202 2997 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
b481de9c
ZY		 2998
2999 if (priv->ibss_beacon)
3000 dev_kfree_skb(priv->ibss_beacon);
3001 priv->ibss_beacon = NULL;
3002
3003 /* clear out any free frames */
fcab423d 3004 iwl_clear_free_frames(priv);
b481de9c
ZY		 3005}
3006
c79dd5b5 3007static void iwl4965_down(struct iwl_priv *priv)
b481de9c
ZY		 3008{
3009 mutex_lock(&priv->mutex);
bb8c093b 3010 __iwl4965_down(priv);
b481de9c 3011 mutex_unlock(&priv->mutex);
b24d22b1 3012
4e39317d 3013 iwl_cancel_deferred_work(priv);
b481de9c
ZY		 3014}
3015
3016#define MAX_HW_RESTARTS 5
3017
c79dd5b5 3018static int __iwl4965_up(struct iwl_priv *priv)
b481de9c 3019{
57aab75a
TW		 3020 int i;
3021 int ret;
b481de9c
ZY		 3022
3023 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3024 IWL_WARNING("Exit pending; will not bring the NIC up\n");
3025 return -EIO;
3026 }
3027
e903fbd4
RC		 3028 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
3029 IWL_ERROR("ucode not available for device bringup\n");
3030 return -EIO;
3031 }
3032
e655b9f0 3033 /* If platform's RF_KILL switch is NOT set to KILL */
3395f6e9 3034 if (iwl_read32(priv, CSR_GP_CNTRL) &
e655b9f0
ZY		 3035 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3036 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3037 else {
3038 set_bit(STATUS_RF_KILL_HW, &priv->status);
3039 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
ad97edd2 3040 iwl_rfkill_set_hw_state(priv);
e655b9f0
ZY		 3041 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
3042 return -ENODEV;
3043 }
b481de9c
ZY		 3044 }
3045
ad97edd2 3046 iwl_rfkill_set_hw_state(priv);
3395f6e9 3047 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
b481de9c 3048
399f4900
RR		 3049 ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
3050 if (ret) {
3051 IWL_ERROR("Unable to allocate shared memory\n");
3052 return ret;
3053 }
3054
1053d35f 3055 ret = iwl_hw_nic_init(priv);
57aab75a
TW		 3056 if (ret) {
3057 IWL_ERROR("Unable to init nic\n");
3058 return ret;
b481de9c
ZY		 3059 }
3060
3061 /* make sure rfkill handshake bits are cleared */
3395f6e9
TW		 3062 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3063 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
b481de9c
ZY		 3064 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3065
3066 /* clear (again), then enable host interrupts */
3395f6e9 3067 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
bb8c093b 3068 iwl4965_enable_interrupts(priv);
b481de9c
ZY		 3069
3070 /* really make sure rfkill handshake bits are cleared */
3395f6e9
TW		 3071 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3072 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
b481de9c
ZY		 3073
3074 /* Copy original ucode data image from disk into backup cache.
3075 * This will be used to initialize the on-board processor's
3076 * data SRAM for a clean start when the runtime program first loads. */
3077 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
5a66926a 3078 priv->ucode_data.len);
b481de9c 3079
e655b9f0 3080 /* We return success when we resume from suspend and rf_kill is on. */
64e72c3e
MA		 3081 if (test_bit(STATUS_RF_KILL_HW, &priv->status) ||
3082 test_bit(STATUS_RF_KILL_SW, &priv->status))
b481de9c 3083 return 0;
b481de9c
ZY		 3084
3085 for (i = 0; i < MAX_HW_RESTARTS; i++) {
3086
bf85ea4f 3087 iwlcore_clear_stations_table(priv);
b481de9c
ZY		 3088
3089 /* load bootstrap state machine,
3090 * load bootstrap program into processor's memory,
3091 * prepare to load the "initialize" uCode */
57aab75a 3092 ret = priv->cfg->ops->lib->load_ucode(priv);
b481de9c 3093
57aab75a
TW		 3094 if (ret) {
3095 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
b481de9c
ZY		 3096 continue;
3097 }
3098
f3d5b45b
EG		 3099 /* Clear out the uCode error bit if it is set */
3100 clear_bit(STATUS_FW_ERROR, &priv->status);
3101
b481de9c 3102 /* start card; "initialize" will load runtime ucode */
edcdf8b2 3103 iwl4965_nic_start(priv);
b481de9c 3104
b481de9c
ZY		 3105 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
3106
3107 return 0;
3108 }
3109
3110 set_bit(STATUS_EXIT_PENDING, &priv->status);
bb8c093b 3111 __iwl4965_down(priv);
64e72c3e 3112 clear_bit(STATUS_EXIT_PENDING, &priv->status);
b481de9c
ZY		 3113
3114 /* tried to restart and config the device for as long as our
3115 * patience could withstand */
3116 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
3117 return -EIO;
3118}
3119
3120
3121/*****************************************************************************
3122 *
3123 * Workqueue callbacks
3124 *
3125 *****************************************************************************/
3126
4a4a9e81 3127static void iwl_bg_init_alive_start(struct work_struct *data)
b481de9c 3128{
c79dd5b5
TW		 3129 struct iwl_priv *priv =
3130 container_of(data, struct iwl_priv, init_alive_start.work);
b481de9c
ZY		 3131
3132 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3133 return;
3134
3135 mutex_lock(&priv->mutex);
f3ccc08c 3136 priv->cfg->ops->lib->init_alive_start(priv);
b481de9c
ZY		 3137 mutex_unlock(&priv->mutex);
3138}
3139
4a4a9e81 3140static void iwl_bg_alive_start(struct work_struct *data)
b481de9c 3141{
c79dd5b5
TW		 3142 struct iwl_priv *priv =
3143 container_of(data, struct iwl_priv, alive_start.work);
b481de9c
ZY		 3144
3145 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3146 return;
3147
3148 mutex_lock(&priv->mutex);
4a4a9e81 3149 iwl_alive_start(priv);
b481de9c
ZY		 3150 mutex_unlock(&priv->mutex);
3151}
3152
bb8c093b 3153static void iwl4965_bg_rf_kill(struct work_struct *work)
b481de9c 3154{
c79dd5b5 3155 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
b481de9c
ZY		 3156
3157 wake_up_interruptible(&priv->wait_command_queue);
3158
3159 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3160 return;
3161
3162 mutex_lock(&priv->mutex);
3163
fee1247a 3164 if (!iwl_is_rfkill(priv)) {
f3d67999 3165 IWL_DEBUG(IWL_DL_RF_KILL,
b481de9c
ZY		 3166 "HW and/or SW RF Kill no longer active, restarting "
3167 "device\n");
3168 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
3169 queue_work(priv->workqueue, &priv->restart);
3170 } else {
ad97edd2
MA		 3171 /* make sure mac80211 stop sending Tx frame */
3172 if (priv->mac80211_registered)
3173 ieee80211_stop_queues(priv->hw);
b481de9c
ZY		 3174
3175 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
3176 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3177 "disabled by SW switch\n");
3178 else
3179 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
3180 "Kill switch must be turned off for "
3181 "wireless networking to work.\n");
3182 }
ad97edd2
MA		 3183 iwl_rfkill_set_hw_state(priv);
3184
b481de9c
ZY		 3185 mutex_unlock(&priv->mutex);
3186}
3187
4419e39b
AK		 3188static void iwl4965_bg_set_monitor(struct work_struct *work)
3189{
3190 struct iwl_priv *priv = container_of(work,
3191 struct iwl_priv, set_monitor);
3192
3193 IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
3194
3195 mutex_lock(&priv->mutex);
3196
3197 if (!iwl_is_ready(priv))
3198 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
3199 else
3200 if (iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR) != 0)
3201 IWL_ERROR("iwl4965_set_mode() failed\n");
3202
3203 mutex_unlock(&priv->mutex);
3204}
3205
b481de9c
ZY		 3206#define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
3207
bb8c093b 3208static void iwl4965_bg_scan_check(struct work_struct *data)
b481de9c 3209{
c79dd5b5
TW		 3210 struct iwl_priv *priv =
3211 container_of(data, struct iwl_priv, scan_check.work);
b481de9c
ZY		 3212
3213 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3214 return;
3215
3216 mutex_lock(&priv->mutex);
3217 if (test_bit(STATUS_SCANNING, &priv->status) ||
3218 test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
f3d67999
EK		 3219 IWL_DEBUG(IWL_DL_SCAN, "Scan completion watchdog resetting "
3220 "adapter (%dms)\n",
3221 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
052c4b9f 3222
b481de9c 3223 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
bb8c093b 3224 iwl4965_send_scan_abort(priv);
b481de9c
ZY		 3225 }
3226 mutex_unlock(&priv->mutex);
3227}
3228
bb8c093b 3229static void iwl4965_bg_request_scan(struct work_struct *data)
b481de9c 3230{
c79dd5b5
TW		 3231 struct iwl_priv *priv =
3232 container_of(data, struct iwl_priv, request_scan);
857485c0 3233 struct iwl_host_cmd cmd = {
b481de9c 3234 .id = REPLY_SCAN_CMD,
bb8c093b 3235 .len = sizeof(struct iwl4965_scan_cmd),
b481de9c
ZY		 3236 .meta.flags = CMD_SIZE_HUGE,
3237 };
bb8c093b 3238 struct iwl4965_scan_cmd *scan;
b481de9c 3239 struct ieee80211_conf *conf = NULL;
78330fdd 3240 u16 cmd_len;
8318d78a 3241 enum ieee80211_band band;
78330fdd 3242 u8 direct_mask;
857485c0 3243 int ret = 0;
b481de9c
ZY		 3244
3245 conf = ieee80211_get_hw_conf(priv->hw);
3246
3247 mutex_lock(&priv->mutex);
3248
fee1247a 3249 if (!iwl_is_ready(priv)) {
b481de9c
ZY		 3250 IWL_WARNING("request scan called when driver not ready.\n");
3251 goto done;
3252 }
3253
3254 /* Make sure the scan wasn't cancelled before this queued work
3255 * was given the chance to run... */
3256 if (!test_bit(STATUS_SCANNING, &priv->status))
3257 goto done;
3258
3259 /* This should never be called or scheduled if there is currently
3260 * a scan active in the hardware. */
3261 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
3262 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
3263 "Ignoring second request.\n");
857485c0 3264 ret = -EIO;
b481de9c
ZY		 3265 goto done;
3266 }
3267
3268 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3269 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
3270 goto done;
3271 }
3272
3273 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3274 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
3275 goto done;
3276 }
3277
fee1247a 3278 if (iwl_is_rfkill(priv)) {
b481de9c
ZY		 3279 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
3280 goto done;
3281 }
3282
3283 if (!test_bit(STATUS_READY, &priv->status)) {
3284 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
3285 goto done;
3286 }
3287
3288 if (!priv->scan_bands) {
3289 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
3290 goto done;
3291 }
3292
3293 if (!priv->scan) {
bb8c093b 3294 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
b481de9c
ZY		 3295 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
3296 if (!priv->scan) {
857485c0 3297 ret = -ENOMEM;
b481de9c
ZY		 3298 goto done;
3299 }
3300 }
3301 scan = priv->scan;
bb8c093b 3302 memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
b481de9c
ZY		 3303
3304 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
3305 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
3306
3109ece1 3307 if (iwl_is_associated(priv)) {
b481de9c
ZY		 3308 u16 interval = 0;
3309 u32 extra;
3310 u32 suspend_time = 100;
3311 u32 scan_suspend_time = 100;
3312 unsigned long flags;
3313
3314 IWL_DEBUG_INFO("Scanning while associated...\n");
3315
3316 spin_lock_irqsave(&priv->lock, flags);
3317 interval = priv->beacon_int;
3318 spin_unlock_irqrestore(&priv->lock, flags);
3319
3320 scan->suspend_time = 0;
052c4b9f 3321 scan->max_out_time = cpu_to_le32(200 * 1024);
b481de9c
ZY		 3322 if (!interval)
3323 interval = suspend_time;
3324
3325 extra = (suspend_time / interval) << 22;
3326 scan_suspend_time = (extra |
3327 ((suspend_time % interval) * 1024));
3328 scan->suspend_time = cpu_to_le32(scan_suspend_time);
3329 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
3330 scan_suspend_time, interval);
3331 }
3332
3333 /* We should add the ability for user to lock to PASSIVE ONLY */
3334 if (priv->one_direct_scan) {
3335 IWL_DEBUG_SCAN
3336 ("Kicking off one direct scan for '%s'\n",
bb8c093b 3337 iwl4965_escape_essid(priv->direct_ssid,
b481de9c
ZY		 3338 priv->direct_ssid_len));
3339 scan->direct_scan[0].id = WLAN_EID_SSID;
3340 scan->direct_scan[0].len = priv->direct_ssid_len;
3341 memcpy(scan->direct_scan[0].ssid,
3342 priv->direct_ssid, priv->direct_ssid_len);
3343 direct_mask = 1;
3109ece1 3344 } else if (!iwl_is_associated(priv) && priv->essid_len) {
786b4557
BM		 3345 IWL_DEBUG_SCAN
3346 ("Kicking off one direct scan for '%s' when not associated\n",
3347 iwl4965_escape_essid(priv->essid, priv->essid_len));
b481de9c
ZY		 3348 scan->direct_scan[0].id = WLAN_EID_SSID;
3349 scan->direct_scan[0].len = priv->essid_len;
3350 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
3351 direct_mask = 1;
857485c0 3352 } else {
786b4557 3353 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
b481de9c 3354 direct_mask = 0;
857485c0 3355 }
b481de9c 3356
b481de9c 3357 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
5425e490 3358 scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
b481de9c
ZY		 3359 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
3360
b481de9c
ZY		 3361
3362 switch (priv->scan_bands) {
3363 case 2:
3364 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
3365 scan->tx_cmd.rate_n_flags =
bb8c093b 3366 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
b481de9c
ZY		 3367 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
3368
3369 scan->good_CRC_th = 0;
8318d78a 3370 band = IEEE80211_BAND_2GHZ;
b481de9c
ZY		 3371 break;
3372
3373 case 1:
3374 scan->tx_cmd.rate_n_flags =
bb8c093b 3375 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
b481de9c
ZY		 3376 RATE_MCS_ANT_B_MSK);
3377 scan->good_CRC_th = IWL_GOOD_CRC_TH;
8318d78a 3378 band = IEEE80211_BAND_5GHZ;
b481de9c
ZY		 3379 break;
3380
3381 default:
3382 IWL_WARNING("Invalid scan band count\n");
3383 goto done;
3384 }
3385
78330fdd
TW		 3386 /* We don't build a direct scan probe request; the uCode will do
3387 * that based on the direct_mask added to each channel entry */
3388 cmd_len = iwl4965_fill_probe_req(priv, band,
3389 (struct ieee80211_mgmt *)scan->data,
3390 IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
3391
3392 scan->tx_cmd.len = cpu_to_le16(cmd_len);
b481de9c
ZY		 3393 /* select Rx chains */
3394
3395 /* Force use of chains B and C (0x6) for scan Rx.
3396 * Avoid A (0x1) because of its off-channel reception on A-band.
3397 * MIMO is not used here, but value is required to make uCode happy. */
3398 scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
3399 cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
3400 (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
3401 (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
3402
3403 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
3404 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
3405
786b4557 3406 if (direct_mask)
26c0f03f
RC		 3407 scan->channel_count =
3408 iwl4965_get_channels_for_scan(
3409 priv, band, 1, /* active */
3410 direct_mask,
3411 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
786b4557 3412 else
26c0f03f
RC		 3413 scan->channel_count =
3414 iwl4965_get_channels_for_scan(
3415 priv, band, 0, /* passive */
3416 direct_mask,
3417 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
b481de9c 3418
5da4b55f
MA		 3419 scan->filter_flags |= (RXON_FILTER_ACCEPT_GRP_MSK |
3420 RXON_FILTER_BCON_AWARE_MSK);
b481de9c 3421 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
bb8c093b 3422 scan->channel_count * sizeof(struct iwl4965_scan_channel);
b481de9c
ZY		 3423 cmd.data = scan;
3424 scan->len = cpu_to_le16(cmd.len);
3425
3426 set_bit(STATUS_SCAN_HW, &priv->status);
857485c0
TW		 3427 ret = iwl_send_cmd_sync(priv, &cmd);
3428 if (ret)
b481de9c
ZY		 3429 goto done;
3430
3431 queue_delayed_work(priv->workqueue, &priv->scan_check,
3432 IWL_SCAN_CHECK_WATCHDOG);
3433
3434 mutex_unlock(&priv->mutex);
3435 return;
3436
3437 done:
01ebd063 3438 /* inform mac80211 scan aborted */
b481de9c
ZY		 3439 queue_work(priv->workqueue, &priv->scan_completed);
3440 mutex_unlock(&priv->mutex);
3441}
3442
16e727e8
EG		 3443static void iwl_bg_run_time_calib_work(struct work_struct *work)
3444{
3445 struct iwl_priv *priv = container_of(work, struct iwl_priv,
3446 run_time_calib_work);
3447
3448 mutex_lock(&priv->mutex);
3449
3450 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
3451 test_bit(STATUS_SCANNING, &priv->status)) {
3452 mutex_unlock(&priv->mutex);
3453 return;
3454 }
3455
3456 if (priv->start_calib) {
3457 iwl_chain_noise_calibration(priv, &priv->statistics);
3458
3459 iwl_sensitivity_calibration(priv, &priv->statistics);
3460 }
3461
3462 mutex_unlock(&priv->mutex);
3463 return;
3464}
3465
bb8c093b 3466static void iwl4965_bg_up(struct work_struct *data)
b481de9c 3467{
c79dd5b5 3468 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
b481de9c
ZY		 3469
3470 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3471 return;
3472
3473 mutex_lock(&priv->mutex);
bb8c093b 3474 __iwl4965_up(priv);
b481de9c
ZY		 3475 mutex_unlock(&priv->mutex);
3476}
3477
bb8c093b 3478static void iwl4965_bg_restart(struct work_struct *data)
b481de9c 3479{
c79dd5b5 3480 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
b481de9c
ZY		 3481
3482 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3483 return;
3484
bb8c093b 3485 iwl4965_down(priv);
b481de9c
ZY		 3486 queue_work(priv->workqueue, &priv->up);
3487}
3488
bb8c093b 3489static void iwl4965_bg_rx_replenish(struct work_struct *data)
b481de9c 3490{
c79dd5b5
TW		 3491 struct iwl_priv *priv =
3492 container_of(data, struct iwl_priv, rx_replenish);
b481de9c
ZY		 3493
3494 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3495 return;
3496
3497 mutex_lock(&priv->mutex);
a55360e4 3498 iwl_rx_replenish(priv);
b481de9c
ZY		 3499 mutex_unlock(&priv->mutex);
3500}
3501
7878a5a4
MA		 3502#define IWL_DELAY_NEXT_SCAN (HZ*2)
3503
508e32e1 3504static void iwl4965_post_associate(struct iwl_priv *priv)
b481de9c 3505{
b481de9c 3506 struct ieee80211_conf *conf = NULL;
857485c0 3507 int ret = 0;
0795af57 3508 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 3509
3510 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
3511 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
3512 return;
3513 }
3514
0795af57
JP		 3515 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
3516 priv->assoc_id,
3517 print_mac(mac, priv->active_rxon.bssid_addr));
b481de9c
ZY		 3518
3519
3520 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3521 return;
3522
b481de9c 3523
508e32e1 3524 if (!priv->vif || !priv->is_open)
948c171c 3525 return;
508e32e1 3526
bb8c093b 3527 iwl4965_scan_cancel_timeout(priv, 200);
052c4b9f 3528
b481de9c
ZY		 3529 conf = ieee80211_get_hw_conf(priv->hw);
3530
3531 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
bb8c093b 3532 iwl4965_commit_rxon(priv);
b481de9c 3533
bb8c093b
CH		 3534 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
3535 iwl4965_setup_rxon_timing(priv);
857485c0 3536 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
b481de9c 3537 sizeof(priv->rxon_timing), &priv->rxon_timing);
857485c0 3538 if (ret)
b481de9c
ZY		 3539 IWL_WARNING("REPLY_RXON_TIMING failed - "
3540 "Attempting to continue.\n");
3541
3542 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3543
fd105e79 3544 if (priv->current_ht_config.is_ht)
47c5196e 3545 iwl_set_rxon_ht(priv, &priv->current_ht_config);
4f85f5b3 3546
c7de35cd 3547 iwl_set_rxon_chain(priv);
b481de9c
ZY		 3548 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3549
3550 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
3551 priv->assoc_id, priv->beacon_int);
3552
3553 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3554 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3555 else
3556 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3557
3558 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3559 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
3560 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3561 else
3562 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3563
3564 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
3565 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3566
3567 }
3568
bb8c093b 3569 iwl4965_commit_rxon(priv);
b481de9c
ZY		 3570
3571 switch (priv->iw_mode) {
3572 case IEEE80211_IF_TYPE_STA:
bb8c093b 3573 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
b481de9c
ZY		 3574 break;
3575
3576 case IEEE80211_IF_TYPE_IBSS:
3577
3578 /* clear out the station table */
bf85ea4f 3579 iwlcore_clear_stations_table(priv);
b481de9c 3580
4f40e4d9
TW		 3581 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
3582 iwl_rxon_add_station(priv, priv->bssid, 0);
bb8c093b
CH		 3583 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
3584 iwl4965_send_beacon_cmd(priv);
b481de9c
ZY		 3585
3586 break;
3587
3588 default:
3589 IWL_ERROR("%s Should not be called in %d mode\n",
3590 __FUNCTION__, priv->iw_mode);
3591 break;
3592 }
3593
bb8c093b 3594 iwl4965_sequence_reset(priv);
b481de9c 3595
b481de9c 3596 /* Enable Rx differential gain and sensitivity calibrations */
f0832f13 3597 iwl_chain_noise_reset(priv);
b481de9c 3598 priv->start_calib = 1;
b481de9c
ZY		 3599
3600 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
3601 priv->assoc_station_added = 1;
3602
bb8c093b 3603 iwl4965_activate_qos(priv, 0);
292ae174 3604
5da4b55f 3605 iwl_power_update_mode(priv, 0);
7878a5a4
MA		 3606 /* we have just associated, don't start scan too early */
3607 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
508e32e1
RC		 3608}
3609
3610
3611static void iwl4965_bg_post_associate(struct work_struct *data)
3612{
3613 struct iwl_priv *priv = container_of(data, struct iwl_priv,
3614 post_associate.work);
3615
3616 mutex_lock(&priv->mutex);
3617 iwl4965_post_associate(priv);
b481de9c 3618 mutex_unlock(&priv->mutex);
508e32e1 3619
b481de9c
ZY		 3620}
3621
bb8c093b 3622static void iwl4965_bg_abort_scan(struct work_struct *work)
b481de9c 3623{
c79dd5b5 3624 struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
b481de9c 3625
fee1247a 3626 if (!iwl_is_ready(priv))
b481de9c
ZY		 3627 return;
3628
3629 mutex_lock(&priv->mutex);
3630
3631 set_bit(STATUS_SCAN_ABORTING, &priv->status);
bb8c093b 3632 iwl4965_send_scan_abort(priv);
b481de9c
ZY		 3633
3634 mutex_unlock(&priv->mutex);
3635}
3636
76bb77e0
ZY		 3637static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
3638
bb8c093b 3639static void iwl4965_bg_scan_completed(struct work_struct *work)
b481de9c 3640{
c79dd5b5
TW		 3641 struct iwl_priv *priv =
3642 container_of(work, struct iwl_priv, scan_completed);
b481de9c 3643
f3d67999 3644 IWL_DEBUG(IWL_DL_SCAN, "SCAN complete scan\n");
b481de9c
ZY		 3645
3646 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3647 return;
3648
a0646470
ZY		 3649 if (test_bit(STATUS_CONF_PENDING, &priv->status))
3650 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
76bb77e0 3651
b481de9c
ZY		 3652 ieee80211_scan_completed(priv->hw);
3653
3654 /* Since setting the TXPOWER may have been deferred while
3655 * performing the scan, fire one off */
3656 mutex_lock(&priv->mutex);
bb8c093b 3657 iwl4965_hw_reg_send_txpower(priv);
b481de9c
ZY		 3658 mutex_unlock(&priv->mutex);
3659}
3660
3661/*****************************************************************************
3662 *
3663 * mac80211 entry point functions
3664 *
3665 *****************************************************************************/
3666
5a66926a
ZY		 3667#define UCODE_READY_TIMEOUT (2 * HZ)
3668
bb8c093b 3669static int iwl4965_mac_start(struct ieee80211_hw *hw)
b481de9c 3670{
c79dd5b5 3671 struct iwl_priv *priv = hw->priv;
5a66926a 3672 int ret;
b481de9c
ZY		 3673
3674 IWL_DEBUG_MAC80211("enter\n");
3675
5a66926a
ZY		 3676 if (pci_enable_device(priv->pci_dev)) {
3677 IWL_ERROR("Fail to pci_enable_device\n");
3678 return -ENODEV;
3679 }
3680 pci_restore_state(priv->pci_dev);
3681 pci_enable_msi(priv->pci_dev);
3682
3683 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
3684 DRV_NAME, priv);
3685 if (ret) {
3686 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
3687 goto out_disable_msi;
3688 }
3689
b481de9c
ZY		 3690 /* we should be verifying the device is ready to be opened */
3691 mutex_lock(&priv->mutex);
3692
c1adf9fb 3693 memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
5a66926a
ZY		 3694 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3695 * ucode filename and max sizes are card-specific. */
b481de9c 3696
5a66926a
ZY		 3697 if (!priv->ucode_code.len) {
3698 ret = iwl4965_read_ucode(priv);
3699 if (ret) {
3700 IWL_ERROR("Could not read microcode: %d\n", ret);
3701 mutex_unlock(&priv->mutex);
3702 goto out_release_irq;
3703 }
3704 }
b481de9c 3705
e655b9f0 3706 ret = __iwl4965_up(priv);
5a66926a 3707
b481de9c 3708 mutex_unlock(&priv->mutex);
5a66926a 3709
e655b9f0
ZY		 3710 if (ret)
3711 goto out_release_irq;
3712
3713 IWL_DEBUG_INFO("Start UP work done.\n");
3714
3715 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
3716 return 0;
3717
fe9b6b72 3718 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
5a66926a 3719 * mac80211 will not be run successfully. */
fe9b6b72
RR		 3720 if (priv->ucode_type == UCODE_RT) {
3721 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3722 test_bit(STATUS_READY, &priv->status),
3723 UCODE_READY_TIMEOUT);
3724 if (!ret) {
3725 if (!test_bit(STATUS_READY, &priv->status)) {
3726 IWL_ERROR("START_ALIVE timeout after %dms.\n",
3727 jiffies_to_msecs(UCODE_READY_TIMEOUT));
3728 ret = -ETIMEDOUT;
3729 goto out_release_irq;
3730 }
5a66926a 3731 }
5a66926a 3732
fe9b6b72
RR		 3733 priv->is_open = 1;
3734 }
b481de9c
ZY		 3735 IWL_DEBUG_MAC80211("leave\n");
3736 return 0;
5a66926a
ZY		 3737
3738out_release_irq:
3739 free_irq(priv->pci_dev->irq, priv);
3740out_disable_msi:
3741 pci_disable_msi(priv->pci_dev);
e655b9f0
ZY		 3742 pci_disable_device(priv->pci_dev);
3743 priv->is_open = 0;
3744 IWL_DEBUG_MAC80211("leave - failed\n");
5a66926a 3745 return ret;
b481de9c
ZY		 3746}
3747
bb8c093b 3748static void iwl4965_mac_stop(struct ieee80211_hw *hw)
b481de9c 3749{
c79dd5b5 3750 struct iwl_priv *priv = hw->priv;
b481de9c
ZY		 3751
3752 IWL_DEBUG_MAC80211("enter\n");
948c171c 3753
e655b9f0
ZY		 3754 if (!priv->is_open) {
3755 IWL_DEBUG_MAC80211("leave - skip\n");
3756 return;
3757 }
3758
b481de9c 3759 priv->is_open = 0;
5a66926a 3760
fee1247a 3761 if (iwl_is_ready_rf(priv)) {
e655b9f0
ZY		 3762 /* stop mac, cancel any scan request and clear
3763 * RXON_FILTER_ASSOC_MSK BIT
3764 */
5a66926a
ZY		 3765 mutex_lock(&priv->mutex);
3766 iwl4965_scan_cancel_timeout(priv, 100);
3767 cancel_delayed_work(&priv->post_associate);
fde3571f 3768 mutex_unlock(&priv->mutex);
fde3571f
MA		 3769 }
3770
5a66926a
ZY		 3771 iwl4965_down(priv);
3772
3773 flush_workqueue(priv->workqueue);
3774 free_irq(priv->pci_dev->irq, priv);
3775 pci_disable_msi(priv->pci_dev);
3776 pci_save_state(priv->pci_dev);
3777 pci_disable_device(priv->pci_dev);
948c171c 3778
b481de9c 3779 IWL_DEBUG_MAC80211("leave\n");
b481de9c
ZY		 3780}
3781
e039fa4a 3782static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
b481de9c 3783{
c79dd5b5 3784 struct iwl_priv *priv = hw->priv;
b481de9c
ZY		 3785
3786 IWL_DEBUG_MAC80211("enter\n");
3787
3788 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
3789 IWL_DEBUG_MAC80211("leave - monitor\n");
3790 return -1;
3791 }
3792
3793 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
e039fa4a 3794 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
b481de9c 3795
e039fa4a 3796 if (iwl_tx_skb(priv, skb))
b481de9c
ZY		 3797 dev_kfree_skb_any(skb);
3798
3799 IWL_DEBUG_MAC80211("leave\n");
3800 return 0;
3801}
3802
bb8c093b 3803static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
b481de9c
ZY		 3804 struct ieee80211_if_init_conf *conf)
3805{
c79dd5b5 3806 struct iwl_priv *priv = hw->priv;
b481de9c 3807 unsigned long flags;
0795af57 3808 DECLARE_MAC_BUF(mac);
b481de9c 3809
32bfd35d 3810 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
b481de9c 3811
32bfd35d
JB		 3812 if (priv->vif) {
3813 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
75849d28 3814 return -EOPNOTSUPP;
b481de9c
ZY		 3815 }
3816
3817 spin_lock_irqsave(&priv->lock, flags);
32bfd35d 3818 priv->vif = conf->vif;
b481de9c
ZY		 3819
3820 spin_unlock_irqrestore(&priv->lock, flags);
3821
3822 mutex_lock(&priv->mutex);
864792e3
TW		 3823
3824 if (conf->mac_addr) {
3825 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
3826 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
3827 }
b481de9c 3828
fee1247a 3829 if (iwl_is_ready(priv))
5a66926a
ZY		 3830 iwl4965_set_mode(priv, conf->type);
3831
b481de9c
ZY		 3832 mutex_unlock(&priv->mutex);
3833
5a66926a 3834 IWL_DEBUG_MAC80211("leave\n");
b481de9c
ZY		 3835 return 0;
3836}
3837
3838/**
bb8c093b 3839 * iwl4965_mac_config - mac80211 config callback
b481de9c
ZY		 3840 *
3841 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
3842 * be set inappropriately and the driver currently sets the hardware up to
3843 * use it whenever needed.
3844 */
bb8c093b 3845static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
b481de9c 3846{
c79dd5b5 3847 struct iwl_priv *priv = hw->priv;
bf85ea4f 3848 const struct iwl_channel_info *ch_info;
b481de9c 3849 unsigned long flags;
76bb77e0 3850 int ret = 0;
82a66bbb 3851 u16 channel;
b481de9c
ZY		 3852
3853 mutex_lock(&priv->mutex);
8318d78a 3854 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
b481de9c 3855
12342c47
ZY		 3856 priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
3857
64e72c3e
MA		 3858
3859 if (priv->cfg->ops->lib->radio_kill_sw &&
3860 priv->cfg->ops->lib->radio_kill_sw(priv, !conf->radio_enabled)) {
3861 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
3862 mutex_unlock(&priv->mutex);
3863 }
3864
fee1247a 3865 if (!iwl_is_ready(priv)) {
b481de9c 3866 IWL_DEBUG_MAC80211("leave - not ready\n");
76bb77e0
ZY		 3867 ret = -EIO;
3868 goto out;
b481de9c
ZY		 3869 }
3870
1ea87396 3871 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
b481de9c 3872 test_bit(STATUS_SCANNING, &priv->status))) {
a0646470
ZY		 3873 IWL_DEBUG_MAC80211("leave - scanning\n");
3874 set_bit(STATUS_CONF_PENDING, &priv->status);
b481de9c 3875 mutex_unlock(&priv->mutex);
a0646470 3876 return 0;
b481de9c
ZY		 3877 }
3878
82a66bbb
TW		 3879 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
3880 ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
b481de9c 3881 if (!is_channel_valid(ch_info)) {
b481de9c 3882 IWL_DEBUG_MAC80211("leave - invalid channel\n");
76bb77e0
ZY		 3883 ret = -EINVAL;
3884 goto out;
b481de9c
ZY		 3885 }
3886
82a66bbb
TW		 3887 spin_lock_irqsave(&priv->lock, flags);
3888
78330fdd 3889 /* if we are switching from ht to 2.4 clear flags
b481de9c
ZY		 3890 * from any ht related info since 2.4 does not
3891 * support ht */
82a66bbb 3892 if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
b481de9c
ZY		 3893#ifdef IEEE80211_CONF_CHANNEL_SWITCH
3894 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
3895#endif
3896 )
3897 priv->staging_rxon.flags = 0;
b481de9c 3898
82a66bbb 3899 iwl_set_rxon_channel(priv, conf->channel->band, channel);
b481de9c 3900
82a66bbb 3901 iwl_set_flags_for_band(priv, conf->channel->band);
b481de9c
ZY		 3902
3903 /* The list of supported rates and rate mask can be different
8318d78a 3904 * for each band; since the band may have changed, reset
b481de9c 3905 * the rate mask to what mac80211 lists */
bb8c093b 3906 iwl4965_set_rate(priv);
b481de9c
ZY		 3907
3908 spin_unlock_irqrestore(&priv->lock, flags);
3909
3910#ifdef IEEE80211_CONF_CHANNEL_SWITCH
3911 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
bb8c093b 3912 iwl4965_hw_channel_switch(priv, conf->channel);
76bb77e0 3913 goto out;
b481de9c
ZY		 3914 }
3915#endif
3916
b481de9c
ZY		 3917 if (!conf->radio_enabled) {
3918 IWL_DEBUG_MAC80211("leave - radio disabled\n");
76bb77e0 3919 goto out;
b481de9c
ZY		 3920 }
3921
fee1247a 3922 if (iwl_is_rfkill(priv)) {
b481de9c 3923 IWL_DEBUG_MAC80211("leave - RF kill\n");
76bb77e0
ZY		 3924 ret = -EIO;
3925 goto out;
b481de9c
ZY		 3926 }
3927
bb8c093b 3928 iwl4965_set_rate(priv);
b481de9c
ZY		 3929
3930 if (memcmp(&priv->active_rxon,
3931 &priv->staging_rxon, sizeof(priv->staging_rxon)))
bb8c093b 3932 iwl4965_commit_rxon(priv);
b481de9c
ZY		 3933 else
3934 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
3935
3936 IWL_DEBUG_MAC80211("leave\n");
3937
a0646470
ZY		 3938out:
3939 clear_bit(STATUS_CONF_PENDING, &priv->status);
5a66926a 3940 mutex_unlock(&priv->mutex);
76bb77e0 3941 return ret;
b481de9c
ZY		 3942}
3943
c79dd5b5 3944static void iwl4965_config_ap(struct iwl_priv *priv)
b481de9c 3945{
857485c0 3946 int ret = 0;
b481de9c 3947
d986bcd1 3948 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
b481de9c
ZY		 3949 return;
3950
3951 /* The following should be done only at AP bring up */
3952 if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
3953
3954 /* RXON - unassoc (to set timing command) */
3955 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
bb8c093b 3956 iwl4965_commit_rxon(priv);
b481de9c
ZY		 3957
3958 /* RXON Timing */
bb8c093b
CH		 3959 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
3960 iwl4965_setup_rxon_timing(priv);
857485c0 3961 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
b481de9c 3962 sizeof(priv->rxon_timing), &priv->rxon_timing);
857485c0 3963 if (ret)
b481de9c
ZY		 3964 IWL_WARNING("REPLY_RXON_TIMING failed - "
3965 "Attempting to continue.\n");
3966
c7de35cd 3967 iwl_set_rxon_chain(priv);
b481de9c
ZY		 3968
3969 /* FIXME: what should be the assoc_id for AP? */
3970 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3971 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3972 priv->staging_rxon.flags |=
3973 RXON_FLG_SHORT_PREAMBLE_MSK;
3974 else
3975 priv->staging_rxon.flags &=
3976 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3977
3978 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3979 if (priv->assoc_capability &
3980 WLAN_CAPABILITY_SHORT_SLOT_TIME)
3981 priv->staging_rxon.flags |=
3982 RXON_FLG_SHORT_SLOT_MSK;
3983 else
3984 priv->staging_rxon.flags &=
3985 ~RXON_FLG_SHORT_SLOT_MSK;
3986
3987 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
3988 priv->staging_rxon.flags &=
3989 ~RXON_FLG_SHORT_SLOT_MSK;
3990 }
3991 /* restore RXON assoc */
3992 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
bb8c093b 3993 iwl4965_commit_rxon(priv);
bb8c093b 3994 iwl4965_activate_qos(priv, 1);
4f40e4d9 3995 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
e1493deb 3996 }
bb8c093b 3997 iwl4965_send_beacon_cmd(priv);
b481de9c
ZY		 3998
3999 /* FIXME - we need to add code here to detect a totally new
4000 * configuration, reset the AP, unassoc, rxon timing, assoc,
4001 * clear sta table, add BCAST sta... */
4002}
4003
32bfd35d
JB		 4004static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
4005 struct ieee80211_vif *vif,
b481de9c
ZY		 4006 struct ieee80211_if_conf *conf)
4007{
c79dd5b5 4008 struct iwl_priv *priv = hw->priv;
0795af57 4009 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 4010 unsigned long flags;
4011 int rc;
4012
4013 if (conf == NULL)
4014 return -EIO;
4015
b716bb91
EG		 4016 if (priv->vif != vif) {
4017 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
b716bb91
EG		 4018 return 0;
4019 }
4020
b481de9c
ZY		 4021 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
4022 (!conf->beacon || !conf->ssid_len)) {
4023 IWL_DEBUG_MAC80211
4024 ("Leaving in AP mode because HostAPD is not ready.\n");
4025 return 0;
4026 }
4027
fee1247a 4028 if (!iwl_is_alive(priv))
5a66926a
ZY		 4029 return -EAGAIN;
4030
b481de9c
ZY		 4031 mutex_lock(&priv->mutex);
4032
b481de9c 4033 if (conf->bssid)
0795af57
JP		 4034 IWL_DEBUG_MAC80211("bssid: %s\n",
4035 print_mac(mac, conf->bssid));
b481de9c 4036
4150c572
JB		 4037/*
4038 * very dubious code was here; the probe filtering flag is never set:
4039 *
b481de9c
ZY		 4040 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
4041 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
4150c572 4042 */
b481de9c
ZY		 4043
4044 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
4045 if (!conf->bssid) {
4046 conf->bssid = priv->mac_addr;
4047 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
0795af57
JP		 4048 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
4049 print_mac(mac, conf->bssid));
b481de9c
ZY		 4050 }
4051 if (priv->ibss_beacon)
4052 dev_kfree_skb(priv->ibss_beacon);
4053
4054 priv->ibss_beacon = conf->beacon;
4055 }
4056
fee1247a 4057 if (iwl_is_rfkill(priv))
fde3571f
MA		 4058 goto done;
4059
b481de9c
ZY		 4060 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
4061 !is_multicast_ether_addr(conf->bssid)) {
4062 /* If there is currently a HW scan going on in the background
4063 * then we need to cancel it else the RXON below will fail. */
bb8c093b 4064 if (iwl4965_scan_cancel_timeout(priv, 100)) {
b481de9c
ZY		 4065 IWL_WARNING("Aborted scan still in progress "
4066 "after 100ms\n");
4067 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
4068 mutex_unlock(&priv->mutex);
4069 return -EAGAIN;
4070 }
4071 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
4072
4073 /* TODO: Audit driver for usage of these members and see
4074 * if mac80211 deprecates them (priv->bssid looks like it
4075 * shouldn't be there, but I haven't scanned the IBSS code
4076 * to verify) - jpk */
4077 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
4078
4079 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
bb8c093b 4080 iwl4965_config_ap(priv);
b481de9c 4081 else {
bb8c093b 4082 rc = iwl4965_commit_rxon(priv);
b481de9c 4083 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
4f40e4d9 4084 iwl_rxon_add_station(
b481de9c
ZY		 4085 priv, priv->active_rxon.bssid_addr, 1);
4086 }
4087
4088 } else {
bb8c093b 4089 iwl4965_scan_cancel_timeout(priv, 100);
b481de9c 4090 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
bb8c093b 4091 iwl4965_commit_rxon(priv);
b481de9c
ZY		 4092 }
4093
fde3571f 4094 done:
b481de9c
ZY		 4095 spin_lock_irqsave(&priv->lock, flags);
4096 if (!conf->ssid_len)
4097 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
4098 else
4099 memcpy(priv->essid, conf->ssid, conf->ssid_len);
4100
4101 priv->essid_len = conf->ssid_len;
4102 spin_unlock_irqrestore(&priv->lock, flags);
4103
4104 IWL_DEBUG_MAC80211("leave\n");
4105 mutex_unlock(&priv->mutex);
4106
4107 return 0;
4108}
4109
bb8c093b 4110static void iwl4965_configure_filter(struct ieee80211_hw *hw,
4150c572
JB		 4111 unsigned int changed_flags,
4112 unsigned int *total_flags,
4113 int mc_count, struct dev_addr_list *mc_list)
4114{
4115 /*
4116 * XXX: dummy
bb8c093b 4117 * see also iwl4965_connection_init_rx_config
4150c572 4118 */
4419e39b
AK		 4119 struct iwl_priv *priv = hw->priv;
4120 int new_flags = 0;
4121 if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
4122 if (*total_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
4123 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
4124 IEEE80211_IF_TYPE_MNTR,
4125 changed_flags, *total_flags);
4126 /* queue work 'cuz mac80211 is holding a lock which
4127 * prevents us from issuing (synchronous) f/w cmds */
4128 queue_work(priv->workqueue, &priv->set_monitor);
4129 new_flags &= FIF_PROMISC_IN_BSS |
4130 FIF_OTHER_BSS |
4131 FIF_ALLMULTI;
4132 }
4133 }
4134 *total_flags = new_flags;
4150c572
JB		 4135}
4136
bb8c093b 4137static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
b481de9c
ZY		 4138 struct ieee80211_if_init_conf *conf)
4139{
c79dd5b5 4140 struct iwl_priv *priv = hw->priv;
b481de9c
ZY		 4141
4142 IWL_DEBUG_MAC80211("enter\n");
4143
4144 mutex_lock(&priv->mutex);
948c171c 4145
fee1247a 4146 if (iwl_is_ready_rf(priv)) {
fde3571f
MA		 4147 iwl4965_scan_cancel_timeout(priv, 100);
4148 cancel_delayed_work(&priv->post_associate);
4149 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4150 iwl4965_commit_rxon(priv);
4151 }
32bfd35d
JB		 4152 if (priv->vif == conf->vif) {
4153 priv->vif = NULL;
b481de9c
ZY		 4154 memset(priv->bssid, 0, ETH_ALEN);
4155 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
4156 priv->essid_len = 0;
4157 }
4158 mutex_unlock(&priv->mutex);
4159
4160 IWL_DEBUG_MAC80211("leave\n");
4161
4162}
471b3efd 4163
3109ece1 4164#define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
471b3efd
JB		 4165static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
4166 struct ieee80211_vif *vif,
4167 struct ieee80211_bss_conf *bss_conf,
4168 u32 changes)
220173b0 4169{
c79dd5b5 4170 struct iwl_priv *priv = hw->priv;
220173b0 4171
3109ece1
TW		 4172 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
4173
471b3efd 4174 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3109ece1
TW		 4175 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
4176 bss_conf->use_short_preamble);
471b3efd 4177 if (bss_conf->use_short_preamble)
220173b0
TW		 4178 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
4179 else
4180 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
4181 }
4182
471b3efd 4183 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3109ece1 4184 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
8318d78a 4185 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
220173b0
TW		 4186 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
4187 else
4188 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
4189 }
4190
98952d5d 4191 if (changes & BSS_CHANGED_HT) {
3109ece1 4192 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
98952d5d 4193 iwl4965_ht_conf(priv, bss_conf);
c7de35cd 4194 iwl_set_rxon_chain(priv);
98952d5d
TW		 4195 }
4196
471b3efd 4197 if (changes & BSS_CHANGED_ASSOC) {
3109ece1 4198 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
508e32e1
RC		 4199 /* This should never happen as this function should
4200 * never be called from interrupt context. */
4201 if (WARN_ON_ONCE(in_interrupt()))
4202 return;
3109ece1
TW		 4203 if (bss_conf->assoc) {
4204 priv->assoc_id = bss_conf->aid;
4205 priv->beacon_int = bss_conf->beacon_int;
4206 priv->timestamp = bss_conf->timestamp;
4207 priv->assoc_capability = bss_conf->assoc_capability;
4208 priv->next_scan_jiffies = jiffies +
4209 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
508e32e1
RC		 4210 mutex_lock(&priv->mutex);
4211 iwl4965_post_associate(priv);
4212 mutex_unlock(&priv->mutex);
3109ece1
TW		 4213 } else {
4214 priv->assoc_id = 0;
4215 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
4216 }
4217 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
4218 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
7e8c519e 4219 iwl_send_rxon_assoc(priv);
471b3efd
JB		 4220 }
4221
220173b0 4222}
b481de9c 4223
bb8c093b 4224static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
b481de9c
ZY		 4225{
4226 int rc = 0;
4227 unsigned long flags;
c79dd5b5 4228 struct iwl_priv *priv = hw->priv;
b481de9c
ZY		 4229
4230 IWL_DEBUG_MAC80211("enter\n");
4231
052c4b9f 4232 mutex_lock(&priv->mutex);
b481de9c
ZY		 4233 spin_lock_irqsave(&priv->lock, flags);
4234
fee1247a 4235 if (!iwl_is_ready_rf(priv)) {
b481de9c
ZY		 4236 rc = -EIO;
4237 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
4238 goto out_unlock;
4239 }
4240
4241 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
4242 rc = -EIO;
4243 IWL_ERROR("ERROR: APs don't scan\n");
4244 goto out_unlock;
4245 }
4246
7878a5a4
MA		 4247 /* we don't schedule scan within next_scan_jiffies period */
4248 if (priv->next_scan_jiffies &&
4249 time_after(priv->next_scan_jiffies, jiffies)) {
4250 rc = -EAGAIN;
4251 goto out_unlock;
4252 }
b481de9c 4253 /* if we just finished scan ask for delay */
7878a5a4
MA		 4254 if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
4255 IWL_DELAY_NEXT_SCAN, jiffies)) {
b481de9c
ZY		 4256 rc = -EAGAIN;
4257 goto out_unlock;
4258 }
4259 if (len) {
7878a5a4 4260 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
bb8c093b 4261 iwl4965_escape_essid(ssid, len), (int)len);
b481de9c
ZY		 4262
4263 priv->one_direct_scan = 1;
4264 priv->direct_ssid_len = (u8)
4265 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
4266 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
948c171c
MA		 4267 } else
4268 priv->one_direct_scan = 0;
b481de9c 4269
bb8c093b 4270 rc = iwl4965_scan_initiate(priv);
b481de9c
ZY		 4271
4272 IWL_DEBUG_MAC80211("leave\n");
4273
4274out_unlock:
4275 spin_unlock_irqrestore(&priv->lock, flags);
052c4b9f 4276 mutex_unlock(&priv->mutex);
b481de9c
ZY		 4277
4278 return rc;
4279}
4280
ab885f8c
EG		 4281static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
4282 struct ieee80211_key_conf *keyconf, const u8 *addr,
4283 u32 iv32, u16 *phase1key)
4284{
4285 struct iwl_priv *priv = hw->priv;
4286 u8 sta_id = IWL_INVALID_STATION;
4287 unsigned long flags;
4288 __le16 key_flags = 0;
4289 int i;
4290 DECLARE_MAC_BUF(mac);
4291
4292 IWL_DEBUG_MAC80211("enter\n");
4293
947b13a7 4294 sta_id = iwl_find_station(priv, addr);
ab885f8c
EG		 4295 if (sta_id == IWL_INVALID_STATION) {
4296 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
4297 print_mac(mac, addr));
4298 return;
4299 }
4300
4301 iwl4965_scan_cancel_timeout(priv, 100);
4302
4303 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
4304 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
4305 key_flags &= ~STA_KEY_FLG_INVALID;
4306
5425e490 4307 if (sta_id == priv->hw_params.bcast_sta_id)
ab885f8c
EG		 4308 key_flags |= STA_KEY_MULTICAST_MSK;
4309
4310 spin_lock_irqsave(&priv->sta_lock, flags);
4311
ab885f8c
EG		 4312 priv->stations[sta_id].sta.key.key_flags = key_flags;
4313 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
4314
4315 for (i = 0; i < 5; i++)
4316 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
4317 cpu_to_le16(phase1key[i]);
4318
4319 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
4320 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
4321
133636de 4322 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
ab885f8c
EG		 4323
4324 spin_unlock_irqrestore(&priv->sta_lock, flags);
4325
4326 IWL_DEBUG_MAC80211("leave\n");
4327}
4328
bb8c093b 4329static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
b481de9c
ZY		 4330 const u8 *local_addr, const u8 *addr,
4331 struct ieee80211_key_conf *key)
4332{
c79dd5b5 4333 struct iwl_priv *priv = hw->priv;
0795af57 4334 DECLARE_MAC_BUF(mac);
deb09c43
EG		 4335 int ret = 0;
4336 u8 sta_id = IWL_INVALID_STATION;
6974e363 4337 u8 is_default_wep_key = 0;
b481de9c
ZY		 4338
4339 IWL_DEBUG_MAC80211("enter\n");
4340
099b40b7 4341 if (priv->hw_params.sw_crypto) {
b481de9c
ZY		 4342 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
4343 return -EOPNOTSUPP;
4344 }
4345
4346 if (is_zero_ether_addr(addr))
4347 /* only support pairwise keys */
4348 return -EOPNOTSUPP;
4349
947b13a7 4350 sta_id = iwl_find_station(priv, addr);
6974e363
EG		 4351 if (sta_id == IWL_INVALID_STATION) {
4352 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
4353 print_mac(mac, addr));
4354 return -EINVAL;
b481de9c 4355
deb09c43 4356 }
b481de9c 4357
6974e363 4358 mutex_lock(&priv->mutex);
bb8c093b 4359 iwl4965_scan_cancel_timeout(priv, 100);
6974e363
EG		 4360 mutex_unlock(&priv->mutex);
4361
4362 /* If we are getting WEP group key and we didn't receive any key mapping
4363 * so far, we are in legacy wep mode (group key only), otherwise we are
4364 * in 1X mode.
4365 * In legacy wep mode, we use another host command to the uCode */
5425e490 4366 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
6974e363
EG		 4367 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
4368 if (cmd == SET_KEY)
4369 is_default_wep_key = !priv->key_mapping_key;
4370 else
ccc038ab
EG		 4371 is_default_wep_key =
4372 (key->hw_key_idx == HW_KEY_DEFAULT);
6974e363 4373 }
052c4b9f 4374
b481de9c 4375 switch (cmd) {
deb09c43 4376 case SET_KEY:
6974e363
EG		 4377 if (is_default_wep_key)
4378 ret = iwl_set_default_wep_key(priv, key);
deb09c43 4379 else
7480513f 4380 ret = iwl_set_dynamic_key(priv, key, sta_id);
deb09c43
EG		 4381
4382 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
b481de9c
ZY		 4383 break;
4384 case DISABLE_KEY:
6974e363
EG		 4385 if (is_default_wep_key)
4386 ret = iwl_remove_default_wep_key(priv, key);
deb09c43 4387 else
3ec47732 4388 ret = iwl_remove_dynamic_key(priv, key, sta_id);
deb09c43
EG		 4389
4390 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
b481de9c
ZY		 4391 break;
4392 default:
deb09c43 4393 ret = -EINVAL;
b481de9c
ZY		 4394 }
4395
4396 IWL_DEBUG_MAC80211("leave\n");
b481de9c 4397
deb09c43 4398 return ret;
b481de9c
ZY		 4399}
4400
e100bb64 4401static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
b481de9c
ZY		 4402 const struct ieee80211_tx_queue_params *params)
4403{
c79dd5b5 4404 struct iwl_priv *priv = hw->priv;
b481de9c
ZY		 4405 unsigned long flags;
4406 int q;
b481de9c
ZY		 4407
4408 IWL_DEBUG_MAC80211("enter\n");
4409
fee1247a 4410 if (!iwl_is_ready_rf(priv)) {
b481de9c
ZY		 4411 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4412 return -EIO;
4413 }
4414
4415 if (queue >= AC_NUM) {
4416 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
4417 return 0;
4418 }
4419
b481de9c
ZY		 4420 if (!priv->qos_data.qos_enable) {
4421 priv->qos_data.qos_active = 0;
4422 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
4423 return 0;
4424 }
4425 q = AC_NUM - 1 - queue;
4426
4427 spin_lock_irqsave(&priv->lock, flags);
4428
4429 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
4430 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
4431 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
4432 priv->qos_data.def_qos_parm.ac[q].edca_txop =
3330d7be 4433 cpu_to_le16((params->txop * 32));
b481de9c
ZY		 4434
4435 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
4436 priv->qos_data.qos_active = 1;
4437
4438 spin_unlock_irqrestore(&priv->lock, flags);
4439
4440 mutex_lock(&priv->mutex);
4441 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
bb8c093b 4442 iwl4965_activate_qos(priv, 1);
3109ece1 4443 else if (priv->assoc_id && iwl_is_associated(priv))
bb8c093b 4444 iwl4965_activate_qos(priv, 0);
b481de9c
ZY		 4445
4446 mutex_unlock(&priv->mutex);
4447
b481de9c
ZY		 4448 IWL_DEBUG_MAC80211("leave\n");
4449 return 0;
4450}
4451
bb8c093b 4452static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
b481de9c
ZY		 4453 struct ieee80211_tx_queue_stats *stats)
4454{
c79dd5b5 4455 struct iwl_priv *priv = hw->priv;
b481de9c 4456 int i, avail;
16466903 4457 struct iwl_tx_queue *txq;
443cfd45 4458 struct iwl_queue *q;
b481de9c
ZY		 4459 unsigned long flags;
4460
4461 IWL_DEBUG_MAC80211("enter\n");
4462
fee1247a 4463 if (!iwl_is_ready_rf(priv)) {
b481de9c
ZY		 4464 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4465 return -EIO;
4466 }
4467
4468 spin_lock_irqsave(&priv->lock, flags);
4469
4470 for (i = 0; i < AC_NUM; i++) {
4471 txq = &priv->txq[i];
4472 q = &txq->q;
443cfd45 4473 avail = iwl_queue_space(q);
b481de9c 4474
57ffc589
JB		 4475 stats[i].len = q->n_window - avail;
4476 stats[i].limit = q->n_window - q->high_mark;
4477 stats[i].count = q->n_window;
b481de9c
ZY		 4478
4479 }
4480 spin_unlock_irqrestore(&priv->lock, flags);
4481
4482 IWL_DEBUG_MAC80211("leave\n");
4483
4484 return 0;
4485}
4486
bb8c093b 4487static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
b481de9c
ZY		 4488 struct ieee80211_low_level_stats *stats)
4489{
bf403db8
EK		 4490 struct iwl_priv *priv = hw->priv;
4491
4492 priv = hw->priv;
b481de9c
ZY		 4493 IWL_DEBUG_MAC80211("enter\n");
4494 IWL_DEBUG_MAC80211("leave\n");
4495
4496 return 0;
4497}
4498
bb8c093b 4499static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
b481de9c 4500{
bf403db8
EK		 4501 struct iwl_priv *priv;
4502
4503 priv = hw->priv;
b481de9c
ZY		 4504 IWL_DEBUG_MAC80211("enter\n");
4505 IWL_DEBUG_MAC80211("leave\n");
4506
4507 return 0;
4508}
4509
bb8c093b 4510static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
b481de9c 4511{
c79dd5b5 4512 struct iwl_priv *priv = hw->priv;
b481de9c
ZY		 4513 unsigned long flags;
4514
4515 mutex_lock(&priv->mutex);
4516 IWL_DEBUG_MAC80211("enter\n");
4517
4518 priv->lq_mngr.lq_ready = 0;
b481de9c 4519 spin_lock_irqsave(&priv->lock, flags);
fd105e79 4520 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
b481de9c 4521 spin_unlock_irqrestore(&priv->lock, flags);
b481de9c 4522
c7de35cd 4523 iwl_reset_qos(priv);
b481de9c
ZY		 4524
4525 cancel_delayed_work(&priv->post_associate);
4526
4527 spin_lock_irqsave(&priv->lock, flags);
4528 priv->assoc_id = 0;
4529 priv->assoc_capability = 0;
b481de9c
ZY		 4530 priv->assoc_station_added = 0;
4531
4532 /* new association get rid of ibss beacon skb */
4533 if (priv->ibss_beacon)
4534 dev_kfree_skb(priv->ibss_beacon);
4535
4536 priv->ibss_beacon = NULL;
4537
4538 priv->beacon_int = priv->hw->conf.beacon_int;
3109ece1 4539 priv->timestamp = 0;
b481de9c
ZY		 4540 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
4541 priv->beacon_int = 0;
4542
4543 spin_unlock_irqrestore(&priv->lock, flags);
4544
fee1247a 4545 if (!iwl_is_ready_rf(priv)) {
fde3571f
MA		 4546 IWL_DEBUG_MAC80211("leave - not ready\n");
4547 mutex_unlock(&priv->mutex);
4548 return;
4549 }
4550
052c4b9f 4551 /* we are restarting association process
4552 * clear RXON_FILTER_ASSOC_MSK bit
4553 */
4554 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
bb8c093b 4555 iwl4965_scan_cancel_timeout(priv, 100);
052c4b9f 4556 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
bb8c093b 4557 iwl4965_commit_rxon(priv);
052c4b9f 4558 }
4559
5da4b55f
MA		 4560 iwl_power_update_mode(priv, 0);
4561
b481de9c
ZY		 4562 /* Per mac80211.h: This is only used in IBSS mode... */
4563 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
052c4b9f 4564
b481de9c
ZY		 4565 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
4566 mutex_unlock(&priv->mutex);
4567 return;
4568 }
4569
bb8c093b 4570 iwl4965_set_rate(priv);
b481de9c
ZY		 4571
4572 mutex_unlock(&priv->mutex);
4573
4574 IWL_DEBUG_MAC80211("leave\n");
b481de9c
ZY		 4575}
4576
e039fa4a 4577static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
b481de9c 4578{
c79dd5b5 4579 struct iwl_priv *priv = hw->priv;
b481de9c
ZY		 4580 unsigned long flags;
4581
4582 mutex_lock(&priv->mutex);
4583 IWL_DEBUG_MAC80211("enter\n");
4584
fee1247a 4585 if (!iwl_is_ready_rf(priv)) {
b481de9c
ZY		 4586 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4587 mutex_unlock(&priv->mutex);
4588 return -EIO;
4589 }
4590
4591 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
4592 IWL_DEBUG_MAC80211("leave - not IBSS\n");
4593 mutex_unlock(&priv->mutex);
4594 return -EIO;
4595 }
4596
4597 spin_lock_irqsave(&priv->lock, flags);
4598
4599 if (priv->ibss_beacon)
4600 dev_kfree_skb(priv->ibss_beacon);
4601
4602 priv->ibss_beacon = skb;
4603
4604 priv->assoc_id = 0;
4605
4606 IWL_DEBUG_MAC80211("leave\n");
4607 spin_unlock_irqrestore(&priv->lock, flags);
4608
c7de35cd 4609 iwl_reset_qos(priv);
b481de9c
ZY		 4610
4611 queue_work(priv->workqueue, &priv->post_associate.work);
4612
4613 mutex_unlock(&priv->mutex);
4614
4615 return 0;
4616}
4617
b481de9c
ZY		 4618/*****************************************************************************
4619 *
4620 * sysfs attributes
4621 *
4622 *****************************************************************************/
4623
0a6857e7 4624#ifdef CONFIG_IWLWIFI_DEBUG
b481de9c
ZY		 4625
4626/*
4627 * The following adds a new attribute to the sysfs representation
4628 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
4629 * used for controlling the debug level.
4630 *
4631 * See the level definitions in iwl for details.
4632 */
4633
8cf769c6
EK		 4634static ssize_t show_debug_level(struct device *d,
4635 struct device_attribute *attr, char *buf)
b481de9c 4636{
8cf769c6
EK		 4637 struct iwl_priv *priv = d->driver_data;
4638
4639 return sprintf(buf, "0x%08X\n", priv->debug_level);
b481de9c 4640}
8cf769c6
EK		 4641static ssize_t store_debug_level(struct device *d,
4642 struct device_attribute *attr,
b481de9c
ZY		 4643 const char *buf, size_t count)
4644{
8cf769c6 4645 struct iwl_priv *priv = d->driver_data;
b481de9c
ZY		 4646 char *p = (char *)buf;
4647 u32 val;
4648
4649 val = simple_strtoul(p, &p, 0);
4650 if (p == buf)
4651 printk(KERN_INFO DRV_NAME
4652 ": %s is not in hex or decimal form.\n", buf);
4653 else
8cf769c6 4654 priv->debug_level = val;
b481de9c
ZY		 4655
4656 return strnlen(buf, count);
4657}
4658
8cf769c6
EK		 4659static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
4660 show_debug_level, store_debug_level);
4661
b481de9c 4662
0a6857e7 4663#endif /* CONFIG_IWLWIFI_DEBUG */
b481de9c 4664
b481de9c 4665
bc6f59bc
TW		 4666static ssize_t show_version(struct device *d,
4667 struct device_attribute *attr, char *buf)
4668{
4669 struct iwl_priv *priv = d->driver_data;
885ba202 4670 struct iwl_alive_resp *palive = &priv->card_alive;
bc6f59bc
TW		 4671
4672 if (palive->is_valid)
4673 return sprintf(buf, "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
4674 "fw type: 0x%01X 0x%01X\n",
4675 palive->ucode_major, palive->ucode_minor,
4676 palive->sw_rev[0], palive->sw_rev[1],
4677 palive->ver_type, palive->ver_subtype);
4678
4679 else
4680 return sprintf(buf, "fw not loaded\n");
4681}
4682
4683static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
4684
b481de9c
ZY		 4685static ssize_t show_temperature(struct device *d,
4686 struct device_attribute *attr, char *buf)
4687{
c79dd5b5 4688 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
b481de9c 4689
fee1247a 4690 if (!iwl_is_alive(priv))
b481de9c
ZY		 4691 return -EAGAIN;
4692
bb8c093b 4693 return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
b481de9c
ZY		 4694}
4695
4696static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
4697
4698static ssize_t show_rs_window(struct device *d,
4699 struct device_attribute *attr,
4700 char *buf)
4701{
c79dd5b5 4702 struct iwl_priv *priv = d->driver_data;
bb8c093b 4703 return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
b481de9c
ZY		 4704}
4705static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
4706
4707static ssize_t show_tx_power(struct device *d,
4708 struct device_attribute *attr, char *buf)
4709{
c79dd5b5 4710 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
b481de9c
ZY		 4711 return sprintf(buf, "%d\n", priv->user_txpower_limit);
4712}
4713
4714static ssize_t store_tx_power(struct device *d,
4715 struct device_attribute *attr,
4716 const char *buf, size_t count)
4717{
c79dd5b5 4718 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
b481de9c
ZY		 4719 char *p = (char *)buf;
4720 u32 val;
4721
4722 val = simple_strtoul(p, &p, 10);
4723 if (p == buf)
4724 printk(KERN_INFO DRV_NAME
4725 ": %s is not in decimal form.\n", buf);
4726 else
bb8c093b 4727 iwl4965_hw_reg_set_txpower(priv, val);
b481de9c
ZY		 4728
4729 return count;
4730}
4731
4732static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
4733
4734static ssize_t show_flags(struct device *d,
4735 struct device_attribute *attr, char *buf)
4736{
c79dd5b5 4737 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
b481de9c
ZY		 4738
4739 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
4740}
4741
4742static ssize_t store_flags(struct device *d,
4743 struct device_attribute *attr,
4744 const char *buf, size_t count)
4745{
c79dd5b5 4746 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
b481de9c
ZY		 4747 u32 flags = simple_strtoul(buf, NULL, 0);
4748
4749 mutex_lock(&priv->mutex);
4750 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
4751 /* Cancel any currently running scans... */
bb8c093b 4752 if (iwl4965_scan_cancel_timeout(priv, 100))
b481de9c
ZY		 4753 IWL_WARNING("Could not cancel scan.\n");
4754 else {
4755 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
4756 flags);
4757 priv->staging_rxon.flags = cpu_to_le32(flags);
bb8c093b 4758 iwl4965_commit_rxon(priv);
b481de9c
ZY		 4759 }
4760 }
4761 mutex_unlock(&priv->mutex);
4762
4763 return count;
4764}
4765
4766static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
4767
4768static ssize_t show_filter_flags(struct device *d,
4769 struct device_attribute *attr, char *buf)
4770{
c79dd5b5 4771 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
b481de9c
ZY		 4772
4773 return sprintf(buf, "0x%04X\n",
4774 le32_to_cpu(priv->active_rxon.filter_flags));
4775}
4776
4777static ssize_t store_filter_flags(struct device *d,
4778 struct device_attribute *attr,
4779 const char *buf, size_t count)
4780{
c79dd5b5 4781 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
b481de9c
ZY		 4782 u32 filter_flags = simple_strtoul(buf, NULL, 0);
4783
4784 mutex_lock(&priv->mutex);
4785 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
4786 /* Cancel any currently running scans... */
bb8c093b 4787 if (iwl4965_scan_cancel_timeout(priv, 100))
b481de9c
ZY		 4788 IWL_WARNING("Could not cancel scan.\n");
4789 else {
4790 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
4791 "0x%04X\n", filter_flags);
4792 priv->staging_rxon.filter_flags =
4793 cpu_to_le32(filter_flags);
bb8c093b 4794 iwl4965_commit_rxon(priv);
b481de9c
ZY		 4795 }
4796 }
4797 mutex_unlock(&priv->mutex);
4798
4799 return count;
4800}
4801
4802static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
4803 store_filter_flags);
4804
c8b0e6e1 4805#ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
b481de9c
ZY		 4806
4807static ssize_t show_measurement(struct device *d,
4808 struct device_attribute *attr, char *buf)
4809{
c79dd5b5 4810 struct iwl_priv *priv = dev_get_drvdata(d);
bb8c093b 4811 struct iwl4965_spectrum_notification measure_report;
b481de9c
ZY		 4812 u32 size = sizeof(measure_report), len = 0, ofs = 0;
4813 u8 *data = (u8 *) & measure_report;
4814 unsigned long flags;
4815
4816 spin_lock_irqsave(&priv->lock, flags);
4817 if (!(priv->measurement_status & MEASUREMENT_READY)) {
4818 spin_unlock_irqrestore(&priv->lock, flags);
4819 return 0;
4820 }
4821 memcpy(&measure_report, &priv->measure_report, size);
4822 priv->measurement_status = 0;
4823 spin_unlock_irqrestore(&priv->lock, flags);
4824
4825 while (size && (PAGE_SIZE - len)) {
4826 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4827 PAGE_SIZE - len, 1);
4828 len = strlen(buf);
4829 if (PAGE_SIZE - len)
4830 buf[len++] = '\n';
4831
4832 ofs += 16;
4833 size -= min(size, 16U);
4834 }
4835
4836 return len;
4837}
4838
4839static ssize_t store_measurement(struct device *d,
4840 struct device_attribute *attr,
4841 const char *buf, size_t count)
4842{
c79dd5b5 4843 struct iwl_priv *priv = dev_get_drvdata(d);
b481de9c
ZY		 4844 struct ieee80211_measurement_params params = {
4845 .channel = le16_to_cpu(priv->active_rxon.channel),
4846 .start_time = cpu_to_le64(priv->last_tsf),
4847 .duration = cpu_to_le16(1),
4848 };
4849 u8 type = IWL_MEASURE_BASIC;
4850 u8 buffer[32];
4851 u8 channel;
4852
4853 if (count) {
4854 char *p = buffer;
4855 strncpy(buffer, buf, min(sizeof(buffer), count));
4856 channel = simple_strtoul(p, NULL, 0);
4857 if (channel)
4858 params.channel = channel;
4859
4860 p = buffer;
4861 while (*p && *p != ' ')
4862 p++;
4863 if (*p)
4864 type = simple_strtoul(p + 1, NULL, 0);
4865 }
4866
4867 IWL_DEBUG_INFO("Invoking measurement of type %d on "
4868 "channel %d (for '%s')\n", type, params.channel, buf);
bb8c093b 4869 iwl4965_get_measurement(priv, &params, type);
b481de9c
ZY		 4870
4871 return count;
4872}
4873
4874static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
4875 show_measurement, store_measurement);
c8b0e6e1 4876#endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
b481de9c
ZY		 4877
4878static ssize_t store_retry_rate(struct device *d,
4879 struct device_attribute *attr,
4880 const char *buf, size_t count)
4881{
c79dd5b5 4882 struct iwl_priv *priv = dev_get_drvdata(d);
b481de9c
ZY		 4883
4884 priv->retry_rate = simple_strtoul(buf, NULL, 0);
4885 if (priv->retry_rate <= 0)
4886 priv->retry_rate = 1;
4887
4888 return count;
4889}
4890
4891static ssize_t show_retry_rate(struct device *d,
4892 struct device_attribute *attr, char *buf)
4893{
c79dd5b5 4894 struct iwl_priv *priv = dev_get_drvdata(d);
b481de9c
ZY		 4895 return sprintf(buf, "%d", priv->retry_rate);
4896}
4897
4898static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
4899 store_retry_rate);
4900
4901static ssize_t store_power_level(struct device *d,
4902 struct device_attribute *attr,
4903 const char *buf, size_t count)
4904{
c79dd5b5 4905 struct iwl_priv *priv = dev_get_drvdata(d);
b481de9c
ZY		 4906 int rc;
4907 int mode;
4908
4909 mode = simple_strtoul(buf, NULL, 0);
4910 mutex_lock(&priv->mutex);
4911
fee1247a 4912 if (!iwl_is_ready(priv)) {
b481de9c
ZY		 4913 rc = -EAGAIN;
4914 goto out;
4915 }
4916
5da4b55f
MA		 4917 rc = iwl_power_set_user_mode(priv, mode);
4918 if (rc) {
4919 IWL_DEBUG_MAC80211("failed setting power mode.\n");
4920 goto out;
b481de9c 4921 }
b481de9c
ZY		 4922 rc = count;
4923
4924 out:
4925 mutex_unlock(&priv->mutex);
4926 return rc;
4927}
4928
4929#define MAX_WX_STRING 80
4930
4931/* Values are in microsecond */
4932static const s32 timeout_duration[] = {
4933 350000,
4934 250000,
4935 75000,
4936 37000,
4937 25000,
4938};
4939static const s32 period_duration[] = {
4940 400000,
4941 700000,
4942 1000000,
4943 1000000,
4944 1000000
4945};
4946
4947static ssize_t show_power_level(struct device *d,
4948 struct device_attribute *attr, char *buf)
4949{
c79dd5b5 4950 struct iwl_priv *priv = dev_get_drvdata(d);
5da4b55f 4951 int level = priv->power_data.power_mode;
b481de9c
ZY		 4952 char *p = buf;
4953
4954 p += sprintf(p, "%d ", level);
4955 switch (level) {
4956 case IWL_POWER_MODE_CAM:
4957 case IWL_POWER_AC:
4958 p += sprintf(p, "(AC)");
4959 break;
4960 case IWL_POWER_BATTERY:
4961 p += sprintf(p, "(BATTERY)");
4962 break;
4963 default:
4964 p += sprintf(p,
4965 "(Timeout %dms, Period %dms)",
4966 timeout_duration[level - 1] / 1000,
4967 period_duration[level - 1] / 1000);
4968 }
5da4b55f 4969/*
b481de9c
ZY		 4970 if (!(priv->power_mode & IWL_POWER_ENABLED))
4971 p += sprintf(p, " OFF\n");
4972 else
4973 p += sprintf(p, " \n");
5da4b55f
MA		 4974*/
4975 p += sprintf(p, " \n");
b481de9c 4976 return (p - buf + 1);
b481de9c
ZY		 4977}
4978
4979static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
4980 store_power_level);
4981
4982static ssize_t show_channels(struct device *d,
4983 struct device_attribute *attr, char *buf)
4984{
8318d78a
JB		 4985 /* all this shit doesn't belong into sysfs anyway */
4986 return 0;
b481de9c
ZY		 4987}
4988
4989static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
4990
4991static ssize_t show_statistics(struct device *d,
4992 struct device_attribute *attr, char *buf)
4993{
c79dd5b5 4994 struct iwl_priv *priv = dev_get_drvdata(d);
bb8c093b 4995 u32 size = sizeof(struct iwl4965_notif_statistics);
b481de9c
ZY		 4996 u32 len = 0, ofs = 0;
4997 u8 *data = (u8 *) & priv->statistics;
4998 int rc = 0;
4999
fee1247a 5000 if (!iwl_is_alive(priv))
b481de9c
ZY		 5001 return -EAGAIN;
5002
5003 mutex_lock(&priv->mutex);
49ea8596 5004 rc = iwl_send_statistics_request(priv, 0);
b481de9c
ZY		 5005 mutex_unlock(&priv->mutex);
5006
5007 if (rc) {
5008 len = sprintf(buf,
5009 "Error sending statistics request: 0x%08X\n", rc);
5010 return len;
5011 }
5012
5013 while (size && (PAGE_SIZE - len)) {
5014 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
5015 PAGE_SIZE - len, 1);
5016 len = strlen(buf);
5017 if (PAGE_SIZE - len)
5018 buf[len++] = '\n';
5019
5020 ofs += 16;
5021 size -= min(size, 16U);
5022 }
5023
5024 return len;
5025}
5026
5027static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
5028
b481de9c
ZY		 5029static ssize_t show_status(struct device *d,
5030 struct device_attribute *attr, char *buf)
5031{
c79dd5b5 5032 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
fee1247a 5033 if (!iwl_is_alive(priv))
b481de9c
ZY		 5034 return -EAGAIN;
5035 return sprintf(buf, "0x%08x\n", (int)priv->status);
5036}
5037
5038static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
5039
b481de9c
ZY		 5040/*****************************************************************************
5041 *
5042 * driver setup and teardown
5043 *
5044 *****************************************************************************/
5045
4e39317d 5046static void iwl_setup_deferred_work(struct iwl_priv *priv)
b481de9c
ZY		 5047{
5048 priv->workqueue = create_workqueue(DRV_NAME);
5049
5050 init_waitqueue_head(&priv->wait_command_queue);
5051
bb8c093b
CH		 5052 INIT_WORK(&priv->up, iwl4965_bg_up);
5053 INIT_WORK(&priv->restart, iwl4965_bg_restart);
5054 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
5055 INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
5056 INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
5057 INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
5058 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
5059 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4419e39b 5060 INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
16e727e8 5061 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
bb8c093b 5062 INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
4a4a9e81
TW		 5063 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
5064 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
bb8c093b
CH		 5065 INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
5066
4e39317d
EG		 5067 if (priv->cfg->ops->lib->setup_deferred_work)
5068 priv->cfg->ops->lib->setup_deferred_work(priv);
5069
5070 init_timer(&priv->statistics_periodic);
5071 priv->statistics_periodic.data = (unsigned long)priv;
5072 priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
b481de9c
ZY		 5073
5074 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
bb8c093b 5075 iwl4965_irq_tasklet, (unsigned long)priv);
b481de9c
ZY		 5076}
5077
4e39317d 5078static void iwl_cancel_deferred_work(struct iwl_priv *priv)
b481de9c 5079{
4e39317d
EG		 5080 if (priv->cfg->ops->lib->cancel_deferred_work)
5081 priv->cfg->ops->lib->cancel_deferred_work(priv);
b481de9c 5082
3ae6a054 5083 cancel_delayed_work_sync(&priv->init_alive_start);
b481de9c
ZY		 5084 cancel_delayed_work(&priv->scan_check);
5085 cancel_delayed_work(&priv->alive_start);
5086 cancel_delayed_work(&priv->post_associate);
5087 cancel_work_sync(&priv->beacon_update);
4e39317d 5088 del_timer_sync(&priv->statistics_periodic);
b481de9c
ZY		 5089}
5090
bb8c093b 5091static struct attribute *iwl4965_sysfs_entries[] = {
b481de9c 5092 &dev_attr_channels.attr,
b481de9c
ZY		 5093 &dev_attr_flags.attr,
5094 &dev_attr_filter_flags.attr,
c8b0e6e1 5095#ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
b481de9c
ZY		 5096 &dev_attr_measurement.attr,
5097#endif
5098 &dev_attr_power_level.attr,
5099 &dev_attr_retry_rate.attr,
b481de9c
ZY		 5100 &dev_attr_rs_window.attr,
5101 &dev_attr_statistics.attr,
5102 &dev_attr_status.attr,
5103 &dev_attr_temperature.attr,
b481de9c 5104 &dev_attr_tx_power.attr,
8cf769c6
EK		 5105#ifdef CONFIG_IWLWIFI_DEBUG
5106 &dev_attr_debug_level.attr,
5107#endif
bc6f59bc 5108 &dev_attr_version.attr,
b481de9c
ZY		 5109
5110 NULL
5111};
5112
bb8c093b 5113static struct attribute_group iwl4965_attribute_group = {
b481de9c 5114 .name = NULL, /* put in device directory */
bb8c093b 5115 .attrs = iwl4965_sysfs_entries,
b481de9c
ZY		 5116};
5117
bb8c093b
CH		 5118static struct ieee80211_ops iwl4965_hw_ops = {
5119 .tx = iwl4965_mac_tx,
5120 .start = iwl4965_mac_start,
5121 .stop = iwl4965_mac_stop,
5122 .add_interface = iwl4965_mac_add_interface,
5123 .remove_interface = iwl4965_mac_remove_interface,
5124 .config = iwl4965_mac_config,
5125 .config_interface = iwl4965_mac_config_interface,
5126 .configure_filter = iwl4965_configure_filter,
5127 .set_key = iwl4965_mac_set_key,
ab885f8c 5128 .update_tkip_key = iwl4965_mac_update_tkip_key,
bb8c093b
CH		 5129 .get_stats = iwl4965_mac_get_stats,
5130 .get_tx_stats = iwl4965_mac_get_tx_stats,
5131 .conf_tx = iwl4965_mac_conf_tx,
5132 .get_tsf = iwl4965_mac_get_tsf,
5133 .reset_tsf = iwl4965_mac_reset_tsf,
5134 .beacon_update = iwl4965_mac_beacon_update,
471b3efd 5135 .bss_info_changed = iwl4965_bss_info_changed,
9ab46173 5136 .ampdu_action = iwl4965_mac_ampdu_action,
bb8c093b 5137 .hw_scan = iwl4965_mac_hw_scan
b481de9c
ZY		 5138};
5139
bb8c093b 5140static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
b481de9c
ZY		 5141{
5142 int err = 0;
c79dd5b5 5143 struct iwl_priv *priv;
b481de9c 5144 struct ieee80211_hw *hw;
82b9a121 5145 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
0359facc 5146 unsigned long flags;
5a66926a 5147 DECLARE_MAC_BUF(mac);
b481de9c 5148
316c30d9
AK		 5149 /************************
5150 * 1. Allocating HW data
5151 ************************/
5152
6440adb5
CB		 5153 /* Disabling hardware scan means that mac80211 will perform scans
5154 * "the hard way", rather than using device's scan. */
1ea87396 5155 if (cfg->mod_params->disable_hw_scan) {
bf403db8
EK		 5156 if (cfg->mod_params->debug & IWL_DL_INFO)
5157 dev_printk(KERN_DEBUG, &(pdev->dev),
5158 "Disabling hw_scan\n");
bb8c093b 5159 iwl4965_hw_ops.hw_scan = NULL;
b481de9c
ZY		 5160 }
5161
1d0a082d
AK		 5162 hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
5163 if (!hw) {
b481de9c
ZY		 5164 err = -ENOMEM;
5165 goto out;
5166 }
1d0a082d
AK		 5167 priv = hw->priv;
5168 /* At this point both hw and priv are allocated. */
5169
b481de9c
ZY		 5170 SET_IEEE80211_DEV(hw, &pdev->dev);
5171
5172 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
82b9a121 5173 priv->cfg = cfg;
b481de9c 5174 priv->pci_dev = pdev;
316c30d9 5175
0a6857e7 5176#ifdef CONFIG_IWLWIFI_DEBUG
bf403db8 5177 priv->debug_level = priv->cfg->mod_params->debug;
b481de9c
ZY		 5178 atomic_set(&priv->restrict_refcnt, 0);
5179#endif
b481de9c 5180
316c30d9
AK		 5181 /**************************
5182 * 2. Initializing PCI bus
5183 **************************/
5184 if (pci_enable_device(pdev)) {
5185 err = -ENODEV;
5186 goto out_ieee80211_free_hw;
5187 }
5188
5189 pci_set_master(pdev);
5190
cc2a8ea8 5191 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
316c30d9 5192 if (!err)
cc2a8ea8
RR		 5193 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
5194 if (err) {
5195 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
5196 if (!err)
5197 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
5198 /* both attempts failed: */
316c30d9 5199 if (err) {
cc2a8ea8
RR		 5200 printk(KERN_WARNING "%s: No suitable DMA available.\n",
5201 DRV_NAME);
316c30d9 5202 goto out_pci_disable_device;
cc2a8ea8 5203 }
316c30d9
AK		 5204 }
5205
5206 err = pci_request_regions(pdev, DRV_NAME);
5207 if (err)
5208 goto out_pci_disable_device;
5209
5210 pci_set_drvdata(pdev, priv);
5211
5212 /* We disable the RETRY_TIMEOUT register (0x41) to keep
5213 * PCI Tx retries from interfering with C3 CPU state */
5214 pci_write_config_byte(pdev, 0x41, 0x00);
5215
5216 /***********************
5217 * 3. Read REV register
5218 ***********************/
5219 priv->hw_base = pci_iomap(pdev, 0, 0);
5220 if (!priv->hw_base) {
5221 err = -ENODEV;
5222 goto out_pci_release_regions;
5223 }
5224
5225 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
5226 (unsigned long long) pci_resource_len(pdev, 0));
5227 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
5228
b661c819 5229 iwl_hw_detect(priv);
316c30d9 5230 printk(KERN_INFO DRV_NAME
b661c819
TW		 5231 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
5232 priv->cfg->name, priv->hw_rev);
316c30d9 5233
91238714
TW		 5234 /* amp init */
5235 err = priv->cfg->ops->lib->apm_ops.init(priv);
316c30d9 5236 if (err < 0) {
91238714 5237 IWL_DEBUG_INFO("Failed to init APMG\n");
316c30d9
AK		 5238 goto out_iounmap;
5239 }
91238714
TW		 5240 /*****************
5241 * 4. Read EEPROM
5242 *****************/
316c30d9
AK		 5243 /* Read the EEPROM */
5244 err = iwl_eeprom_init(priv);
5245 if (err) {
5246 IWL_ERROR("Unable to init EEPROM\n");
5247 goto out_iounmap;
5248 }
8614f360
TW		 5249 err = iwl_eeprom_check_version(priv);
5250 if (err)
5251 goto out_iounmap;
5252
02883017 5253 /* extract MAC Address */
316c30d9
AK		 5254 iwl_eeprom_get_mac(priv, priv->mac_addr);
5255 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
5256 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
5257
5258 /************************
5259 * 5. Setup HW constants
5260 ************************/
5261 /* Device-specific setup */
5425e490
TW		 5262 if (priv->cfg->ops->lib->set_hw_params(priv)) {
5263 IWL_ERROR("failed to set hw parameters\n");
073d3f5f 5264 goto out_free_eeprom;
316c30d9
AK		 5265 }
5266
5267 /*******************
6ba87956 5268 * 6. Setup priv
316c30d9 5269 *******************/
b481de9c 5270
6ba87956 5271 err = iwl_init_drv(priv);
bf85ea4f 5272 if (err)
399f4900 5273 goto out_free_eeprom;
bf85ea4f 5274 /* At this point both hw and priv are initialized. */
316c30d9
AK		 5275
5276 /**********************************
5277 * 7. Initialize module parameters
5278 **********************************/
5279
5280 /* Disable radio (SW RF KILL) via parameter when loading driver */
1ea87396 5281 if (priv->cfg->mod_params->disable) {
316c30d9
AK		 5282 set_bit(STATUS_RF_KILL_SW, &priv->status);
5283 IWL_DEBUG_INFO("Radio disabled.\n");
5284 }
5285
316c30d9
AK		 5286 /********************
5287 * 8. Setup services
5288 ********************/
0359facc 5289 spin_lock_irqsave(&priv->lock, flags);
316c30d9 5290 iwl4965_disable_interrupts(priv);
0359facc 5291 spin_unlock_irqrestore(&priv->lock, flags);
316c30d9
AK		 5292
5293 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5294 if (err) {
5295 IWL_ERROR("failed to create sysfs device attributes\n");
6ba87956 5296 goto out_uninit_drv;
316c30d9
AK		 5297 }
5298
316c30d9 5299
4e39317d 5300 iwl_setup_deferred_work(priv);
316c30d9
AK		 5301 iwl4965_setup_rx_handlers(priv);
5302
5303 /********************
5304 * 9. Conclude
5305 ********************/
5a66926a
ZY		 5306 pci_save_state(pdev);
5307 pci_disable_device(pdev);
b481de9c 5308
6ba87956
TW		 5309 /**********************************
5310 * 10. Setup and register mac80211
5311 **********************************/
5312
5313 err = iwl_setup_mac(priv);
5314 if (err)
5315 goto out_remove_sysfs;
5316
5317 err = iwl_dbgfs_register(priv, DRV_NAME);
5318 if (err)
5319 IWL_ERROR("failed to create debugfs files\n");
5320
c8381fdc
MA		 5321 /* notify iwlcore to init */
5322 iwlcore_low_level_notify(priv, IWLCORE_INIT_EVT);
b481de9c
ZY		 5323 return 0;
5324
316c30d9
AK		 5325 out_remove_sysfs:
5326 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
6ba87956
TW		 5327 out_uninit_drv:
5328 iwl_uninit_drv(priv);
073d3f5f
TW		 5329 out_free_eeprom:
5330 iwl_eeprom_free(priv);
b481de9c
ZY		 5331 out_iounmap:
5332 pci_iounmap(pdev, priv->hw_base);
5333 out_pci_release_regions:
5334 pci_release_regions(pdev);
316c30d9 5335 pci_set_drvdata(pdev, NULL);
b481de9c
ZY		 5336 out_pci_disable_device:
5337 pci_disable_device(pdev);
b481de9c
ZY		 5338 out_ieee80211_free_hw:
5339 ieee80211_free_hw(priv->hw);
5340 out:
5341 return err;
5342}
5343
c83dbf68 5344static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
b481de9c 5345{
c79dd5b5 5346 struct iwl_priv *priv = pci_get_drvdata(pdev);
b481de9c
ZY		 5347 struct list_head *p, *q;
5348 int i;
0359facc 5349 unsigned long flags;
b481de9c
ZY		 5350
5351 if (!priv)
5352 return;
5353
5354 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
5355
67249625
EG		 5356 iwl_dbgfs_unregister(priv);
5357 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5358
c4f55232
RR		 5359 if (priv->mac80211_registered) {
5360 ieee80211_unregister_hw(priv->hw);
5361 priv->mac80211_registered = 0;
5362 }
5363
b481de9c 5364 set_bit(STATUS_EXIT_PENDING, &priv->status);
b24d22b1 5365
bb8c093b 5366 iwl4965_down(priv);
b481de9c 5367
0359facc
MA		 5368 /* make sure we flush any pending irq or
5369 * tasklet for the driver
5370 */
5371 spin_lock_irqsave(&priv->lock, flags);
5372 iwl4965_disable_interrupts(priv);
5373 spin_unlock_irqrestore(&priv->lock, flags);
5374
5375 iwl_synchronize_irq(priv);
5376
b481de9c
ZY		 5377 /* Free MAC hash list for ADHOC */
5378 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
5379 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
5380 list_del(p);
bb8c093b 5381 kfree(list_entry(p, struct iwl4965_ibss_seq, list));
b481de9c
ZY		 5382 }
5383 }
5384
c8381fdc 5385 iwlcore_low_level_notify(priv, IWLCORE_REMOVE_EVT);
b481de9c 5386
bb8c093b 5387 iwl4965_dealloc_ucode_pci(priv);
b481de9c
ZY		 5388
5389 if (priv->rxq.bd)
a55360e4 5390 iwl_rx_queue_free(priv, &priv->rxq);
1053d35f 5391 iwl_hw_txq_ctx_free(priv);
b481de9c 5392
bf85ea4f 5393 iwlcore_clear_stations_table(priv);
073d3f5f 5394 iwl_eeprom_free(priv);
b481de9c 5395
b481de9c 5396
948c171c
MA		 5397 /*netif_stop_queue(dev); */
5398 flush_workqueue(priv->workqueue);
5399
bb8c093b 5400 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
b481de9c
ZY		 5401 * priv->workqueue... so we can't take down the workqueue
5402 * until now... */
5403 destroy_workqueue(priv->workqueue);
5404 priv->workqueue = NULL;
5405
b481de9c
ZY		 5406 pci_iounmap(pdev, priv->hw_base);
5407 pci_release_regions(pdev);
5408 pci_disable_device(pdev);
5409 pci_set_drvdata(pdev, NULL);
5410
6ba87956 5411 iwl_uninit_drv(priv);
b481de9c
ZY		 5412
5413 if (priv->ibss_beacon)
5414 dev_kfree_skb(priv->ibss_beacon);
5415
5416 ieee80211_free_hw(priv->hw);
5417}
5418
5419#ifdef CONFIG_PM
5420
bb8c093b 5421static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
b481de9c 5422{
c79dd5b5 5423 struct iwl_priv *priv = pci_get_drvdata(pdev);
b481de9c 5424
e655b9f0
ZY		 5425 if (priv->is_open) {
5426 set_bit(STATUS_IN_SUSPEND, &priv->status);
5427 iwl4965_mac_stop(priv->hw);
5428 priv->is_open = 1;
5429 }
b481de9c 5430
b481de9c
ZY		 5431 pci_set_power_state(pdev, PCI_D3hot);
5432
b481de9c
ZY		 5433 return 0;
5434}
5435
bb8c093b 5436static int iwl4965_pci_resume(struct pci_dev *pdev)
b481de9c 5437{
c79dd5b5 5438 struct iwl_priv *priv = pci_get_drvdata(pdev);
b481de9c 5439
b481de9c 5440 pci_set_power_state(pdev, PCI_D0);
b481de9c 5441
e655b9f0
ZY		 5442 if (priv->is_open)
5443 iwl4965_mac_start(priv->hw);
b481de9c 5444
e655b9f0 5445 clear_bit(STATUS_IN_SUSPEND, &priv->status);
b481de9c
ZY		 5446 return 0;
5447}
5448
5449#endif /* CONFIG_PM */
5450
5451/*****************************************************************************
5452 *
5453 * driver and module entry point
5454 *
5455 *****************************************************************************/
5456
fed9017e
RR		 5457/* Hardware specific file defines the PCI IDs table for that hardware module */
5458static struct pci_device_id iwl_hw_card_ids[] = {
5459 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
5460 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
5a6a256e
TW		 5461#ifdef CONFIG_IWL5000
5462 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
5463 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
5464 {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
5465#endif /* CONFIG_IWL5000 */
fed9017e
RR		 5466 {0}
5467};
5468MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
5469
5470static struct pci_driver iwl_driver = {
b481de9c 5471 .name = DRV_NAME,
fed9017e 5472 .id_table = iwl_hw_card_ids,
bb8c093b
CH		 5473 .probe = iwl4965_pci_probe,
5474 .remove = __devexit_p(iwl4965_pci_remove),
b481de9c 5475#ifdef CONFIG_PM
bb8c093b
CH		 5476 .suspend = iwl4965_pci_suspend,
5477 .resume = iwl4965_pci_resume,
b481de9c
ZY		 5478#endif
5479};
5480
bb8c093b 5481static int __init iwl4965_init(void)
b481de9c
ZY		 5482{
5483
5484 int ret;
5485 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
5486 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
897e1cf2
RC		 5487
5488 ret = iwl4965_rate_control_register();
5489 if (ret) {
5490 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
5491 return ret;
5492 }
5493
fed9017e 5494 ret = pci_register_driver(&iwl_driver);
b481de9c
ZY		 5495 if (ret) {
5496 IWL_ERROR("Unable to initialize PCI module\n");
897e1cf2 5497 goto error_register;
b481de9c 5498 }
b481de9c
ZY		 5499
5500 return ret;
897e1cf2 5501
897e1cf2
RC		 5502error_register:
5503 iwl4965_rate_control_unregister();
5504 return ret;
b481de9c
ZY		 5505}
5506
bb8c093b 5507static void __exit iwl4965_exit(void)
b481de9c 5508{
fed9017e 5509 pci_unregister_driver(&iwl_driver);
897e1cf2 5510 iwl4965_rate_control_unregister();
b481de9c
ZY		 5511}
5512
bb8c093b
CH		 5513module_exit(iwl4965_exit);
5514module_init(iwl4965_init);
Linux kernel - Deliverables
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