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iwlwifi: refactor setting tx power
[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 */
630fe9b6 370 rc = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
b481de9c 371 if (rc) {
630fe9b6 372 IWL_ERROR("Error sending TX power (%d).\n", rc);
b481de9c
ZY		 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
ZY		 1179 priv->iw_mode = mode;
1180
398f9e76
AK		 1181 /* init channel/phymode to values given at driver init */
1182 iwl_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
1183
bb8c093b 1184 iwl4965_connection_init_rx_config(priv);
b481de9c
ZY		 1185 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1186
bf85ea4f 1187 iwlcore_clear_stations_table(priv);
b481de9c 1188
fde3571f 1189 /* dont commit rxon if rf-kill is on*/
fee1247a 1190 if (!iwl_is_ready_rf(priv))
fde3571f
MA		 1191 return -EAGAIN;
1192
1193 cancel_delayed_work(&priv->scan_check);
1194 if (iwl4965_scan_cancel_timeout(priv, 100)) {
1195 IWL_WARNING("Aborted scan still in progress after 100ms\n");
1196 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
1197 return -EAGAIN;
1198 }
1199
bb8c093b 1200 iwl4965_commit_rxon(priv);
b481de9c
ZY		 1201
1202 return 0;
1203}
1204
c79dd5b5 1205static void iwl4965_set_rate(struct iwl_priv *priv)
b481de9c 1206{
8318d78a 1207 const struct ieee80211_supported_band *hw = NULL;
b481de9c
ZY		 1208 struct ieee80211_rate *rate;
1209 int i;
1210
d1141dfb 1211 hw = iwl_get_hw_mode(priv, priv->band);
c4ba9621
SA		 1212 if (!hw) {
1213 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
1214 return;
1215 }
b481de9c
ZY		 1216
1217 priv->active_rate = 0;
1218 priv->active_rate_basic = 0;
1219
8318d78a
JB		 1220 for (i = 0; i < hw->n_bitrates; i++) {
1221 rate = &(hw->bitrates[i]);
1222 if (rate->hw_value < IWL_RATE_COUNT)
1223 priv->active_rate |= (1 << rate->hw_value);
b481de9c
ZY		 1224 }
1225
1226 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
1227 priv->active_rate, priv->active_rate_basic);
1228
1229 /*
1230 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
1231 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
1232 * OFDM
1233 */
1234 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
1235 priv->staging_rxon.cck_basic_rates =
1236 ((priv->active_rate_basic &
1237 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
1238 else
1239 priv->staging_rxon.cck_basic_rates =
1240 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1241
1242 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
1243 priv->staging_rxon.ofdm_basic_rates =
1244 ((priv->active_rate_basic &
1245 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
1246 IWL_FIRST_OFDM_RATE) & 0xFF;
1247 else
1248 priv->staging_rxon.ofdm_basic_rates =
1249 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1250}
1251
64e72c3e 1252int iwl4965_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
b481de9c
ZY		 1253{
1254 unsigned long flags;
1255
1256 if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
64e72c3e 1257 return 0;
b481de9c
ZY		 1258
1259 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
1260 disable_radio ? "OFF" : "ON");
1261
1262 if (disable_radio) {
bb8c093b 1263 iwl4965_scan_cancel(priv);
b481de9c
ZY		 1264 /* FIXME: This is a workaround for AP */
1265 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
1266 spin_lock_irqsave(&priv->lock, flags);
3395f6e9 1267 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
b481de9c
ZY		 1268 CSR_UCODE_SW_BIT_RFKILL);
1269 spin_unlock_irqrestore(&priv->lock, flags);
ad97edd2 1270 /* call the host command only if no hw rf-kill set */
59003835
MA		 1271 if (!test_bit(STATUS_RF_KILL_HW, &priv->status) &&
1272 iwl_is_ready(priv))
ad97edd2
MA		 1273 iwl4965_send_card_state(priv,
1274 CARD_STATE_CMD_DISABLE,
1275 0);
b481de9c 1276 set_bit(STATUS_RF_KILL_SW, &priv->status);
ad97edd2
MA		 1277
1278 /* make sure mac80211 stop sending Tx frame */
1279 if (priv->mac80211_registered)
1280 ieee80211_stop_queues(priv->hw);
b481de9c 1281 }
64e72c3e 1282 return 0;
b481de9c
ZY		 1283 }
1284
1285 spin_lock_irqsave(&priv->lock, flags);
3395f6e9 1286 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
b481de9c
ZY		 1287
1288 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1289 spin_unlock_irqrestore(&priv->lock, flags);
1290
1291 /* wake up ucode */
1292 msleep(10);
1293
1294 spin_lock_irqsave(&priv->lock, flags);
3395f6e9
TW		 1295 iwl_read32(priv, CSR_UCODE_DRV_GP1);
1296 if (!iwl_grab_nic_access(priv))
1297 iwl_release_nic_access(priv);
b481de9c
ZY		 1298 spin_unlock_irqrestore(&priv->lock, flags);
1299
1300 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
1301 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
1302 "disabled by HW switch\n");
64e72c3e 1303 return 0;
b481de9c
ZY		 1304 }
1305
1306 queue_work(priv->workqueue, &priv->restart);
64e72c3e 1307 return 1;
b481de9c
ZY		 1308}
1309
b481de9c
ZY		 1310#define IWL_PACKET_RETRY_TIME HZ
1311
c79dd5b5 1312int iwl4965_is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
b481de9c
ZY		 1313{
1314 u16 sc = le16_to_cpu(header->seq_ctrl);
1315 u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
1316 u16 frag = sc & IEEE80211_SCTL_FRAG;
1317 u16 *last_seq, *last_frag;
1318 unsigned long *last_time;
1319
1320 switch (priv->iw_mode) {
1321 case IEEE80211_IF_TYPE_IBSS:{
1322 struct list_head *p;
bb8c093b 1323 struct iwl4965_ibss_seq *entry = NULL;
b481de9c
ZY		 1324 u8 *mac = header->addr2;
1325 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
1326
1327 __list_for_each(p, &priv->ibss_mac_hash[index]) {
bb8c093b 1328 entry = list_entry(p, struct iwl4965_ibss_seq, list);
b481de9c
ZY		 1329 if (!compare_ether_addr(entry->mac, mac))
1330 break;
1331 }
1332 if (p == &priv->ibss_mac_hash[index]) {
1333 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
1334 if (!entry) {
bc434dd2 1335 IWL_ERROR("Cannot malloc new mac entry\n");
b481de9c
ZY		 1336 return 0;
1337 }
1338 memcpy(entry->mac, mac, ETH_ALEN);
1339 entry->seq_num = seq;
1340 entry->frag_num = frag;
1341 entry->packet_time = jiffies;
bc434dd2 1342 list_add(&entry->list, &priv->ibss_mac_hash[index]);
b481de9c
ZY		 1343 return 0;
1344 }
1345 last_seq = &entry->seq_num;
1346 last_frag = &entry->frag_num;
1347 last_time = &entry->packet_time;
1348 break;
1349 }
1350 case IEEE80211_IF_TYPE_STA:
1351 last_seq = &priv->last_seq_num;
1352 last_frag = &priv->last_frag_num;
1353 last_time = &priv->last_packet_time;
1354 break;
1355 default:
1356 return 0;
1357 }
1358 if ((*last_seq == seq) &&
1359 time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
1360 if (*last_frag == frag)
1361 goto drop;
1362 if (*last_frag + 1 != frag)
1363 /* out-of-order fragment */
1364 goto drop;
1365 } else
1366 *last_seq = seq;
1367
1368 *last_frag = frag;
1369 *last_time = jiffies;
1370 return 0;
1371
1372 drop:
1373 return 1;
1374}
1375
c8b0e6e1 1376#ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
b481de9c
ZY		 1377
1378#include "iwl-spectrum.h"
1379
1380#define BEACON_TIME_MASK_LOW 0x00FFFFFF
1381#define BEACON_TIME_MASK_HIGH 0xFF000000
1382#define TIME_UNIT 1024
1383
1384/*
1385 * extended beacon time format
1386 * time in usec will be changed into a 32-bit value in 8:24 format
1387 * the high 1 byte is the beacon counts
1388 * the lower 3 bytes is the time in usec within one beacon interval
1389 */
1390
bb8c093b 1391static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
b481de9c
ZY		 1392{
1393 u32 quot;
1394 u32 rem;
1395 u32 interval = beacon_interval * 1024;
1396
1397 if (!interval || !usec)
1398 return 0;
1399
1400 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
1401 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
1402
1403 return (quot << 24) + rem;
1404}
1405
1406/* base is usually what we get from ucode with each received frame,
1407 * the same as HW timer counter counting down
1408 */
1409
bb8c093b 1410static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
b481de9c
ZY		 1411{
1412 u32 base_low = base & BEACON_TIME_MASK_LOW;
1413 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
1414 u32 interval = beacon_interval * TIME_UNIT;
1415 u32 res = (base & BEACON_TIME_MASK_HIGH) +
1416 (addon & BEACON_TIME_MASK_HIGH);
1417
1418 if (base_low > addon_low)
1419 res += base_low - addon_low;
1420 else if (base_low < addon_low) {
1421 res += interval + base_low - addon_low;
1422 res += (1 << 24);
1423 } else
1424 res += (1 << 24);
1425
1426 return cpu_to_le32(res);
1427}
1428
c79dd5b5 1429static int iwl4965_get_measurement(struct iwl_priv *priv,
b481de9c
ZY		 1430 struct ieee80211_measurement_params *params,
1431 u8 type)
1432{
bb8c093b 1433 struct iwl4965_spectrum_cmd spectrum;
db11d634 1434 struct iwl_rx_packet *res;
857485c0 1435 struct iwl_host_cmd cmd = {
b481de9c
ZY		 1436 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
1437 .data = (void *)&spectrum,
1438 .meta.flags = CMD_WANT_SKB,
1439 };
1440 u32 add_time = le64_to_cpu(params->start_time);
1441 int rc;
1442 int spectrum_resp_status;
1443 int duration = le16_to_cpu(params->duration);
1444
3109ece1 1445 if (iwl_is_associated(priv))
b481de9c 1446 add_time =
bb8c093b 1447 iwl4965_usecs_to_beacons(
b481de9c
ZY		 1448 le64_to_cpu(params->start_time) - priv->last_tsf,
1449 le16_to_cpu(priv->rxon_timing.beacon_interval));
1450
1451 memset(&spectrum, 0, sizeof(spectrum));
1452
1453 spectrum.channel_count = cpu_to_le16(1);
1454 spectrum.flags =
1455 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
1456 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
1457 cmd.len = sizeof(spectrum);
1458 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
1459
3109ece1 1460 if (iwl_is_associated(priv))
b481de9c 1461 spectrum.start_time =
bb8c093b 1462 iwl4965_add_beacon_time(priv->last_beacon_time,
b481de9c
ZY		 1463 add_time,
1464 le16_to_cpu(priv->rxon_timing.beacon_interval));
1465 else
1466 spectrum.start_time = 0;
1467
1468 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
1469 spectrum.channels[0].channel = params->channel;
1470 spectrum.channels[0].type = type;
1471 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
1472 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
1473 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
1474
857485c0 1475 rc = iwl_send_cmd_sync(priv, &cmd);
b481de9c
ZY		 1476 if (rc)
1477 return rc;
1478
db11d634 1479 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
b481de9c
ZY		 1480 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1481 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
1482 rc = -EIO;
1483 }
1484
1485 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
1486 switch (spectrum_resp_status) {
1487 case 0: /* Command will be handled */
1488 if (res->u.spectrum.id != 0xff) {
1489 IWL_DEBUG_INFO
1490 ("Replaced existing measurement: %d\n",
1491 res->u.spectrum.id);
1492 priv->measurement_status &= ~MEASUREMENT_READY;
1493 }
1494 priv->measurement_status |= MEASUREMENT_ACTIVE;
1495 rc = 0;
1496 break;
1497
1498 case 1: /* Command will not be handled */
1499 rc = -EAGAIN;
1500 break;
1501 }
1502
1503 dev_kfree_skb_any(cmd.meta.u.skb);
1504
1505 return rc;
1506}
1507#endif
1508
b481de9c
ZY		 1509/******************************************************************************
1510 *
1511 * Generic RX handler implementations
1512 *
1513 ******************************************************************************/
885ba202
TW		 1514static void iwl_rx_reply_alive(struct iwl_priv *priv,
1515 struct iwl_rx_mem_buffer *rxb)
b481de9c 1516{
db11d634 1517 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
885ba202 1518 struct iwl_alive_resp *palive;
b481de9c
ZY		 1519 struct delayed_work *pwork;
1520
1521 palive = &pkt->u.alive_frame;
1522
1523 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1524 "0x%01X 0x%01X\n",
1525 palive->is_valid, palive->ver_type,
1526 palive->ver_subtype);
1527
1528 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1529 IWL_DEBUG_INFO("Initialization Alive received.\n");
1530 memcpy(&priv->card_alive_init,
1531 &pkt->u.alive_frame,
885ba202 1532 sizeof(struct iwl_init_alive_resp));
b481de9c
ZY		 1533 pwork = &priv->init_alive_start;
1534 } else {
1535 IWL_DEBUG_INFO("Runtime Alive received.\n");
1536 memcpy(&priv->card_alive, &pkt->u.alive_frame,
885ba202 1537 sizeof(struct iwl_alive_resp));
b481de9c
ZY		 1538 pwork = &priv->alive_start;
1539 }
1540
1541 /* We delay the ALIVE response by 5ms to
1542 * give the HW RF Kill time to activate... */
1543 if (palive->is_valid == UCODE_VALID_OK)
1544 queue_delayed_work(priv->workqueue, pwork,
1545 msecs_to_jiffies(5));
1546 else
1547 IWL_WARNING("uCode did not respond OK.\n");
1548}
1549
c79dd5b5 1550static void iwl4965_rx_reply_error(struct iwl_priv *priv,
a55360e4 1551 struct iwl_rx_mem_buffer *rxb)
b481de9c 1552{
db11d634 1553 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
b481de9c
ZY		 1554
1555 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1556 "seq 0x%04X ser 0x%08X\n",
1557 le32_to_cpu(pkt->u.err_resp.error_type),
1558 get_cmd_string(pkt->u.err_resp.cmd_id),
1559 pkt->u.err_resp.cmd_id,
1560 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1561 le32_to_cpu(pkt->u.err_resp.error_info));
1562}
1563
1564#define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1565
a55360e4 1566static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
b481de9c 1567{
db11d634 1568 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
c1adf9fb 1569 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
bb8c093b 1570 struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
b481de9c
ZY		 1571 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1572 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1573 rxon->channel = csa->channel;
1574 priv->staging_rxon.channel = csa->channel;
1575}
1576
c79dd5b5 1577static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
a55360e4 1578 struct iwl_rx_mem_buffer *rxb)
b481de9c 1579{
c8b0e6e1 1580#ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
db11d634 1581 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
bb8c093b 1582 struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
b481de9c
ZY		 1583
1584 if (!report->state) {
f3d67999
EK		 1585 IWL_DEBUG(IWL_DL_11H,
1586 "Spectrum Measure Notification: Start\n");
b481de9c
ZY		 1587 return;
1588 }
1589
1590 memcpy(&priv->measure_report, report, sizeof(*report));
1591 priv->measurement_status |= MEASUREMENT_READY;
1592#endif
1593}
1594
c79dd5b5 1595static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
a55360e4 1596 struct iwl_rx_mem_buffer *rxb)
b481de9c 1597{
0a6857e7 1598#ifdef CONFIG_IWLWIFI_DEBUG
db11d634 1599 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
bb8c093b 1600 struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
b481de9c
ZY		 1601 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1602 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1603#endif
1604}
1605
c79dd5b5 1606static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
a55360e4 1607 struct iwl_rx_mem_buffer *rxb)
b481de9c 1608{
db11d634 1609 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
b481de9c
ZY		 1610 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1611 "notification for %s:\n",
1612 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
bf403db8 1613 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
b481de9c
ZY		 1614}
1615
bb8c093b 1616static void iwl4965_bg_beacon_update(struct work_struct *work)
b481de9c 1617{
c79dd5b5
TW		 1618 struct iwl_priv *priv =
1619 container_of(work, struct iwl_priv, beacon_update);
b481de9c
ZY		 1620 struct sk_buff *beacon;
1621
1622 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
e039fa4a 1623 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
b481de9c
ZY		 1624
1625 if (!beacon) {
1626 IWL_ERROR("update beacon failed\n");
1627 return;
1628 }
1629
1630 mutex_lock(&priv->mutex);
1631 /* new beacon skb is allocated every time; dispose previous.*/
1632 if (priv->ibss_beacon)
1633 dev_kfree_skb(priv->ibss_beacon);
1634
1635 priv->ibss_beacon = beacon;
1636 mutex_unlock(&priv->mutex);
1637
bb8c093b 1638 iwl4965_send_beacon_cmd(priv);
b481de9c
ZY		 1639}
1640
4e39317d
EG		 1641/**
1642 * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1643 *
1644 * This callback is provided in order to send a statistics request.
1645 *
1646 * This timer function is continually reset to execute within
1647 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1648 * was received. We need to ensure we receive the statistics in order
1649 * to update the temperature used for calibrating the TXPOWER.
1650 */
1651static void iwl4965_bg_statistics_periodic(unsigned long data)
1652{
1653 struct iwl_priv *priv = (struct iwl_priv *)data;
1654
1655 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1656 return;
1657
1658 iwl_send_statistics_request(priv, CMD_ASYNC);
1659}
1660
c79dd5b5 1661static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
a55360e4 1662 struct iwl_rx_mem_buffer *rxb)
b481de9c 1663{
0a6857e7 1664#ifdef CONFIG_IWLWIFI_DEBUG
db11d634 1665 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
bb8c093b
CH		 1666 struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1667 u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
b481de9c
ZY		 1668
1669 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1670 "tsf %d %d rate %d\n",
25a6572c 1671 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
b481de9c
ZY		 1672 beacon->beacon_notify_hdr.failure_frame,
1673 le32_to_cpu(beacon->ibss_mgr_status),
1674 le32_to_cpu(beacon->high_tsf),
1675 le32_to_cpu(beacon->low_tsf), rate);
1676#endif
1677
1678 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
1679 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1680 queue_work(priv->workqueue, &priv->beacon_update);
1681}
1682
1683/* Service response to REPLY_SCAN_CMD (0x80) */
c79dd5b5 1684static void iwl4965_rx_reply_scan(struct iwl_priv *priv,
a55360e4 1685 struct iwl_rx_mem_buffer *rxb)
b481de9c 1686{
0a6857e7 1687#ifdef CONFIG_IWLWIFI_DEBUG
db11d634 1688 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
bb8c093b
CH		 1689 struct iwl4965_scanreq_notification *notif =
1690 (struct iwl4965_scanreq_notification *)pkt->u.raw;
b481de9c
ZY		 1691
1692 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
1693#endif
1694}
1695
1696/* Service SCAN_START_NOTIFICATION (0x82) */
c79dd5b5 1697static void iwl4965_rx_scan_start_notif(struct iwl_priv *priv,
a55360e4 1698 struct iwl_rx_mem_buffer *rxb)
b481de9c 1699{
db11d634 1700 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
bb8c093b
CH		 1701 struct iwl4965_scanstart_notification *notif =
1702 (struct iwl4965_scanstart_notification *)pkt->u.raw;
b481de9c
ZY		 1703 priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
1704 IWL_DEBUG_SCAN("Scan start: "
1705 "%d [802.11%s] "
1706 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
1707 notif->channel,
1708 notif->band ? "bg" : "a",
1709 notif->tsf_high,
1710 notif->tsf_low, notif->status, notif->beacon_timer);
1711}
1712
1713/* Service SCAN_RESULTS_NOTIFICATION (0x83) */
c79dd5b5 1714static void iwl4965_rx_scan_results_notif(struct iwl_priv *priv,
a55360e4 1715 struct iwl_rx_mem_buffer *rxb)
b481de9c 1716{
db11d634 1717 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
bb8c093b
CH		 1718 struct iwl4965_scanresults_notification *notif =
1719 (struct iwl4965_scanresults_notification *)pkt->u.raw;
b481de9c
ZY		 1720
1721 IWL_DEBUG_SCAN("Scan ch.res: "
1722 "%d [802.11%s] "
1723 "(TSF: 0x%08X:%08X) - %d "
1724 "elapsed=%lu usec (%dms since last)\n",
1725 notif->channel,
1726 notif->band ? "bg" : "a",
1727 le32_to_cpu(notif->tsf_high),
1728 le32_to_cpu(notif->tsf_low),
1729 le32_to_cpu(notif->statistics[0]),
1730 le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
1731 jiffies_to_msecs(elapsed_jiffies
1732 (priv->last_scan_jiffies, jiffies)));
1733
1734 priv->last_scan_jiffies = jiffies;
7878a5a4 1735 priv->next_scan_jiffies = 0;
b481de9c
ZY		 1736}
1737
1738/* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
c79dd5b5 1739static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv,
a55360e4 1740 struct iwl_rx_mem_buffer *rxb)
b481de9c 1741{
db11d634 1742 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
bb8c093b 1743 struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
b481de9c
ZY		 1744
1745 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
1746 scan_notif->scanned_channels,
1747 scan_notif->tsf_low,
1748 scan_notif->tsf_high, scan_notif->status);
1749
1750 /* The HW is no longer scanning */
1751 clear_bit(STATUS_SCAN_HW, &priv->status);
1752
1753 /* The scan completion notification came in, so kill that timer... */
1754 cancel_delayed_work(&priv->scan_check);
1755
1756 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
1757 (priv->scan_bands == 2) ? "2.4" : "5.2",
1758 jiffies_to_msecs(elapsed_jiffies
1759 (priv->scan_pass_start, jiffies)));
1760
1761 /* Remove this scanned band from the list
1762 * of pending bands to scan */
1763 priv->scan_bands--;
1764
1765 /* If a request to abort was given, or the scan did not succeed
1766 * then we reset the scan state machine and terminate,
1767 * re-queuing another scan if one has been requested */
1768 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1769 IWL_DEBUG_INFO("Aborted scan completed.\n");
1770 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1771 } else {
1772 /* If there are more bands on this scan pass reschedule */
1773 if (priv->scan_bands > 0)
1774 goto reschedule;
1775 }
1776
1777 priv->last_scan_jiffies = jiffies;
7878a5a4 1778 priv->next_scan_jiffies = 0;
b481de9c
ZY		 1779 IWL_DEBUG_INFO("Setting scan to off\n");
1780
1781 clear_bit(STATUS_SCANNING, &priv->status);
1782
1783 IWL_DEBUG_INFO("Scan took %dms\n",
1784 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
1785
1786 queue_work(priv->workqueue, &priv->scan_completed);
1787
1788 return;
1789
1790reschedule:
1791 priv->scan_pass_start = jiffies;
1792 queue_work(priv->workqueue, &priv->request_scan);
1793}
1794
1795/* Handle notification from uCode that card's power state is changing
1796 * due to software, hardware, or critical temperature RFKILL */
c79dd5b5 1797static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
a55360e4 1798 struct iwl_rx_mem_buffer *rxb)
b481de9c 1799{
db11d634 1800 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
b481de9c
ZY		 1801 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1802 unsigned long status = priv->status;
1803
1804 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1805 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1806 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1807
1808 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1809 RF_CARD_DISABLED)) {
1810
3395f6e9 1811 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
b481de9c
ZY		 1812 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1813
3395f6e9
TW		 1814 if (!iwl_grab_nic_access(priv)) {
1815 iwl_write_direct32(
b481de9c
ZY		 1816 priv, HBUS_TARG_MBX_C,
1817 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1818
3395f6e9 1819 iwl_release_nic_access(priv);
b481de9c
ZY		 1820 }
1821
1822 if (!(flags & RXON_CARD_DISABLED)) {
3395f6e9 1823 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
b481de9c 1824 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
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
1834 if (flags & RF_CARD_DISABLED) {
3395f6e9 1835 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
b481de9c 1836 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
3395f6e9
TW		 1837 iwl_read32(priv, CSR_UCODE_DRV_GP1);
1838 if (!iwl_grab_nic_access(priv))
1839 iwl_release_nic_access(priv);
b481de9c
ZY		 1840 }
1841 }
1842
1843 if (flags & HW_CARD_DISABLED)
1844 set_bit(STATUS_RF_KILL_HW, &priv->status);
1845 else
1846 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1847
1848
1849 if (flags & SW_CARD_DISABLED)
1850 set_bit(STATUS_RF_KILL_SW, &priv->status);
1851 else
1852 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1853
1854 if (!(flags & RXON_CARD_DISABLED))
bb8c093b 1855 iwl4965_scan_cancel(priv);
b481de9c
ZY		 1856
1857 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1858 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1859 (test_bit(STATUS_RF_KILL_SW, &status) !=
1860 test_bit(STATUS_RF_KILL_SW, &priv->status)))
1861 queue_work(priv->workqueue, &priv->rf_kill);
1862 else
1863 wake_up_interruptible(&priv->wait_command_queue);
1864}
1865
37a44211
RR		 1866/* Cache phy data (Rx signal strength, etc) for HT frame (REPLY_RX_PHY_CMD).
1867 * This will be used later in iwl4965_rx_reply_rx() for REPLY_RX_MPDU_CMD. */
1868static void iwl4965_rx_reply_rx_phy(struct iwl_priv *priv,
1869 struct iwl_rx_mem_buffer *rxb)
1870{
1871 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1872 priv->last_phy_res[0] = 1;
1873 memcpy(&priv->last_phy_res[1], &(pkt->u.raw[0]),
1874 sizeof(struct iwl4965_rx_phy_res));
1875}
1876
b481de9c 1877/**
bb8c093b 1878 * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
b481de9c
ZY		 1879 *
1880 * Setup the RX handlers for each of the reply types sent from the uCode
1881 * to the host.
1882 *
1883 * This function chains into the hardware specific files for them to setup
1884 * any hardware specific handlers as well.
1885 */
c79dd5b5 1886static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
b481de9c 1887{
885ba202 1888 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
bb8c093b
CH		 1889 priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1890 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
b481de9c 1891 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
bb8c093b
CH		 1892 iwl4965_rx_spectrum_measure_notif;
1893 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
b481de9c 1894 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
bb8c093b
CH		 1895 iwl4965_rx_pm_debug_statistics_notif;
1896 priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
b481de9c 1897
9fbab516
BC		 1898 /*
1899 * The same handler is used for both the REPLY to a discrete
1900 * statistics request from the host as well as for the periodic
1901 * statistics notifications (after received beacons) from the uCode.
b481de9c 1902 */
bb8c093b
CH		 1903 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
1904 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
37a44211 1905 /* scan handlers */
bb8c093b
CH		 1906 priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
1907 priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
b481de9c 1908 priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
bb8c093b 1909 iwl4965_rx_scan_results_notif;
b481de9c 1910 priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
bb8c093b 1911 iwl4965_rx_scan_complete_notif;
37a44211 1912 /* status change handler */
bb8c093b 1913 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
b481de9c 1914
c1354754
TW		 1915 priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1916 iwl_rx_missed_beacon_notif;
37a44211
RR		 1917 /* Rx handlers */
1918 priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl4965_rx_reply_rx_phy;
1919 priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl4965_rx_reply_rx;
9fbab516 1920 /* Set up hardware specific Rx handlers */
d4789efe 1921 priv->cfg->ops->lib->rx_handler_setup(priv);
b481de9c
ZY		 1922}
1923
5c0eef96
MA		 1924/*
1925 * this should be called while priv->lock is locked
1926*/
a55360e4 1927static void __iwl_rx_replenish(struct iwl_priv *priv)
b481de9c 1928{
a55360e4
TW		 1929 iwl_rx_allocate(priv);
1930 iwl_rx_queue_restock(priv);
b481de9c
ZY		 1931}
1932
b481de9c
ZY		 1933
1934/**
a55360e4 1935 * iwl_rx_handle - Main entry function for receiving responses from uCode
b481de9c
ZY		 1936 *
1937 * Uses the priv->rx_handlers callback function array to invoke
1938 * the appropriate handlers, including command responses,
1939 * frame-received notifications, and other notifications.
1940 */
a55360e4 1941void iwl_rx_handle(struct iwl_priv *priv)
b481de9c 1942{
a55360e4 1943 struct iwl_rx_mem_buffer *rxb;
db11d634 1944 struct iwl_rx_packet *pkt;
a55360e4 1945 struct iwl_rx_queue *rxq = &priv->rxq;
b481de9c
ZY		 1946 u32 r, i;
1947 int reclaim;
1948 unsigned long flags;
5c0eef96 1949 u8 fill_rx = 0;
d68ab680 1950 u32 count = 8;
b481de9c 1951
6440adb5
CB		 1952 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1953 * buffer that the driver may process (last buffer filled by ucode). */
d67f5489 1954 r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
b481de9c
ZY		 1955 i = rxq->read;
1956
1957 /* Rx interrupt, but nothing sent from uCode */
1958 if (i == r)
f3d67999 1959 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
b481de9c 1960
a55360e4 1961 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
5c0eef96
MA		 1962 fill_rx = 1;
1963
b481de9c
ZY		 1964 while (i != r) {
1965 rxb = rxq->queue[i];
1966
9fbab516 1967 /* If an RXB doesn't have a Rx queue slot associated with it,
b481de9c
ZY		 1968 * then a bug has been introduced in the queue refilling
1969 * routines -- catch it here */
1970 BUG_ON(rxb == NULL);
1971
1972 rxq->queue[i] = NULL;
1973
1974 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
5425e490 1975 priv->hw_params.rx_buf_size,
b481de9c 1976 PCI_DMA_FROMDEVICE);
db11d634 1977 pkt = (struct iwl_rx_packet *)rxb->skb->data;
b481de9c
ZY		 1978
1979 /* Reclaim a command buffer only if this packet is a response
1980 * to a (driver-originated) command.
1981 * If the packet (e.g. Rx frame) originated from uCode,
1982 * there is no command buffer to reclaim.
1983 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1984 * but apparently a few don't get set; catch them here. */
1985 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1986 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
857485c0 1987 (pkt->hdr.cmd != REPLY_RX) &&
cfe01709 1988 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
b481de9c
ZY		 1989 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1990 (pkt->hdr.cmd != REPLY_TX);
1991
1992 /* Based on type of command response or notification,
1993 * handle those that need handling via function in
bb8c093b 1994 * rx_handlers table. See iwl4965_setup_rx_handlers() */
b481de9c 1995 if (priv->rx_handlers[pkt->hdr.cmd]) {
f3d67999
EK		 1996 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1997 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
b481de9c
ZY		 1998 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1999 } else {
2000 /* No handling needed */
f3d67999 2001 IWL_DEBUG(IWL_DL_RX,
b481de9c
ZY		 2002 "r %d i %d No handler needed for %s, 0x%02x\n",
2003 r, i, get_cmd_string(pkt->hdr.cmd),
2004 pkt->hdr.cmd);
2005 }
2006
2007 if (reclaim) {
9fbab516 2008 /* Invoke any callbacks, transfer the skb to caller, and
857485c0 2009 * fire off the (possibly) blocking iwl_send_cmd()
b481de9c
ZY		 2010 * as we reclaim the driver command queue */
2011 if (rxb && rxb->skb)
17b88929 2012 iwl_tx_cmd_complete(priv, rxb);
b481de9c
ZY		 2013 else
2014 IWL_WARNING("Claim null rxb?\n");
2015 }
2016
2017 /* For now we just don't re-use anything. We can tweak this
2018 * later to try and re-use notification packets and SKBs that
2019 * fail to Rx correctly */
2020 if (rxb->skb != NULL) {
2021 priv->alloc_rxb_skb--;
2022 dev_kfree_skb_any(rxb->skb);
2023 rxb->skb = NULL;
2024 }
2025
2026 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
5425e490 2027 priv->hw_params.rx_buf_size,
9ee1ba47 2028 PCI_DMA_FROMDEVICE);
b481de9c
ZY		 2029 spin_lock_irqsave(&rxq->lock, flags);
2030 list_add_tail(&rxb->list, &priv->rxq.rx_used);
2031 spin_unlock_irqrestore(&rxq->lock, flags);
2032 i = (i + 1) & RX_QUEUE_MASK;
5c0eef96
MA		 2033 /* If there are a lot of unused frames,
2034 * restock the Rx queue so ucode wont assert. */
2035 if (fill_rx) {
2036 count++;
2037 if (count >= 8) {
2038 priv->rxq.read = i;
a55360e4 2039 __iwl_rx_replenish(priv);
5c0eef96
MA		 2040 count = 0;
2041 }
2042 }
b481de9c
ZY		 2043 }
2044
2045 /* Backtrack one entry */
2046 priv->rxq.read = i;
a55360e4
TW		 2047 iwl_rx_queue_restock(priv);
2048}
2049/* Convert linear signal-to-noise ratio into dB */
2050static u8 ratio2dB[100] = {
2051/* 0 1 2 3 4 5 6 7 8 9 */
2052 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
2053 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
2054 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
2055 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
2056 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
2057 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
2058 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
2059 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
2060 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
2061 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
2062};
2063
2064/* Calculates a relative dB value from a ratio of linear
2065 * (i.e. not dB) signal levels.
2066 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
2067int iwl4965_calc_db_from_ratio(int sig_ratio)
2068{
2069 /* 1000:1 or higher just report as 60 dB */
2070 if (sig_ratio >= 1000)
2071 return 60;
2072
2073 /* 100:1 or higher, divide by 10 and use table,
2074 * add 20 dB to make up for divide by 10 */
2075 if (sig_ratio >= 100)
2076 return (20 + (int)ratio2dB[sig_ratio/10]);
2077
2078 /* We shouldn't see this */
2079 if (sig_ratio < 1)
2080 return 0;
2081
2082 /* Use table for ratios 1:1 - 99:1 */
2083 return (int)ratio2dB[sig_ratio];
2084}
2085
2086#define PERFECT_RSSI (-20) /* dBm */
2087#define WORST_RSSI (-95) /* dBm */
2088#define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
2089
2090/* Calculate an indication of rx signal quality (a percentage, not dBm!).
2091 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
2092 * about formulas used below. */
2093int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
2094{
2095 int sig_qual;
2096 int degradation = PERFECT_RSSI - rssi_dbm;
2097
2098 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
2099 * as indicator; formula is (signal dbm - noise dbm).
2100 * SNR at or above 40 is a great signal (100%).
2101 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
2102 * Weakest usable signal is usually 10 - 15 dB SNR. */
2103 if (noise_dbm) {
2104 if (rssi_dbm - noise_dbm >= 40)
2105 return 100;
2106 else if (rssi_dbm < noise_dbm)
2107 return 0;
2108 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
2109
2110 /* Else use just the signal level.
2111 * This formula is a least squares fit of data points collected and
2112 * compared with a reference system that had a percentage (%) display
2113 * for signal quality. */
2114 } else
2115 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
2116 (15 * RSSI_RANGE + 62 * degradation)) /
2117 (RSSI_RANGE * RSSI_RANGE);
2118
2119 if (sig_qual > 100)
2120 sig_qual = 100;
2121 else if (sig_qual < 1)
2122 sig_qual = 0;
2123
2124 return sig_qual;
b481de9c
ZY		 2125}
2126
0a6857e7 2127#ifdef CONFIG_IWLWIFI_DEBUG
bf403db8 2128static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
b481de9c 2129{
c1adf9fb 2130 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
0795af57
JP		 2131 DECLARE_MAC_BUF(mac);
2132
b481de9c 2133 IWL_DEBUG_RADIO("RX CONFIG:\n");
bf403db8 2134 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
b481de9c
ZY		 2135 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
2136 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
2137 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
2138 le32_to_cpu(rxon->filter_flags));
2139 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
2140 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
2141 rxon->ofdm_basic_rates);
2142 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
0795af57
JP		 2143 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
2144 print_mac(mac, rxon->node_addr));
2145 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
2146 print_mac(mac, rxon->bssid_addr));
b481de9c
ZY		 2147 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
2148}
2149#endif
2150
c79dd5b5 2151static void iwl4965_enable_interrupts(struct iwl_priv *priv)
b481de9c
ZY		 2152{
2153 IWL_DEBUG_ISR("Enabling interrupts\n");
2154 set_bit(STATUS_INT_ENABLED, &priv->status);
3395f6e9 2155 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
b481de9c
ZY		 2156}
2157
0359facc
MA		 2158/* call this function to flush any scheduled tasklet */
2159static inline void iwl_synchronize_irq(struct iwl_priv *priv)
2160{
2161 /* wait to make sure we flush pedding tasklet*/
2162 synchronize_irq(priv->pci_dev->irq);
2163 tasklet_kill(&priv->irq_tasklet);
2164}
2165
c79dd5b5 2166static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
b481de9c
ZY		 2167{
2168 clear_bit(STATUS_INT_ENABLED, &priv->status);
2169
2170 /* disable interrupts from uCode/NIC to host */
3395f6e9 2171 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
b481de9c
ZY		 2172
2173 /* acknowledge/clear/reset any interrupts still pending
2174 * from uCode or flow handler (Rx/Tx DMA) */
3395f6e9
TW		 2175 iwl_write32(priv, CSR_INT, 0xffffffff);
2176 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
b481de9c
ZY		 2177 IWL_DEBUG_ISR("Disabled interrupts\n");
2178}
2179
b481de9c 2180
b481de9c 2181/**
bb8c093b 2182 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
b481de9c 2183 */
c79dd5b5 2184static void iwl4965_irq_handle_error(struct iwl_priv *priv)
b481de9c 2185{
bb8c093b 2186 /* Set the FW error flag -- cleared on iwl4965_down */
b481de9c
ZY		 2187 set_bit(STATUS_FW_ERROR, &priv->status);
2188
2189 /* Cancel currently queued command. */
2190 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
2191
0a6857e7 2192#ifdef CONFIG_IWLWIFI_DEBUG
bf403db8 2193 if (priv->debug_level & IWL_DL_FW_ERRORS) {
ede0cba4 2194 iwl_dump_nic_error_log(priv);
189a2b59 2195 iwl_dump_nic_event_log(priv);
bf403db8 2196 iwl4965_print_rx_config_cmd(priv);
b481de9c
ZY		 2197 }
2198#endif
2199
2200 wake_up_interruptible(&priv->wait_command_queue);
2201
2202 /* Keep the restart process from trying to send host
2203 * commands by clearing the INIT status bit */
2204 clear_bit(STATUS_READY, &priv->status);
2205
2206 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
f3d67999 2207 IWL_DEBUG(IWL_DL_FW_ERRORS,
b481de9c
ZY		 2208 "Restarting adapter due to uCode error.\n");
2209
3109ece1 2210 if (iwl_is_associated(priv)) {
b481de9c
ZY		 2211 memcpy(&priv->recovery_rxon, &priv->active_rxon,
2212 sizeof(priv->recovery_rxon));
2213 priv->error_recovering = 1;
2214 }
3a1081e8
EK		 2215 if (priv->cfg->mod_params->restart_fw)
2216 queue_work(priv->workqueue, &priv->restart);
b481de9c
ZY		 2217 }
2218}
2219
c79dd5b5 2220static void iwl4965_error_recovery(struct iwl_priv *priv)
b481de9c
ZY		 2221{
2222 unsigned long flags;
2223
2224 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
2225 sizeof(priv->staging_rxon));
2226 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
bb8c093b 2227 iwl4965_commit_rxon(priv);
b481de9c 2228
4f40e4d9 2229 iwl_rxon_add_station(priv, priv->bssid, 1);
b481de9c
ZY		 2230
2231 spin_lock_irqsave(&priv->lock, flags);
2232 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
2233 priv->error_recovering = 0;
2234 spin_unlock_irqrestore(&priv->lock, flags);
2235}
2236
c79dd5b5 2237static void iwl4965_irq_tasklet(struct iwl_priv *priv)
b481de9c
ZY		 2238{
2239 u32 inta, handled = 0;
2240 u32 inta_fh;
2241 unsigned long flags;
0a6857e7 2242#ifdef CONFIG_IWLWIFI_DEBUG
b481de9c
ZY		 2243 u32 inta_mask;
2244#endif
2245
2246 spin_lock_irqsave(&priv->lock, flags);
2247
2248 /* Ack/clear/reset pending uCode interrupts.
2249 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
2250 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
3395f6e9
TW		 2251 inta = iwl_read32(priv, CSR_INT);
2252 iwl_write32(priv, CSR_INT, inta);
b481de9c
ZY		 2253
2254 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
2255 * Any new interrupts that happen after this, either while we're
2256 * in this tasklet, or later, will show up in next ISR/tasklet. */
3395f6e9
TW		 2257 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2258 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
b481de9c 2259
0a6857e7 2260#ifdef CONFIG_IWLWIFI_DEBUG
bf403db8 2261 if (priv->debug_level & IWL_DL_ISR) {
9fbab516 2262 /* just for debug */
3395f6e9 2263 inta_mask = iwl_read32(priv, CSR_INT_MASK);
b481de9c
ZY		 2264 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2265 inta, inta_mask, inta_fh);
2266 }
2267#endif
2268
2269 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
2270 * atomic, make sure that inta covers all the interrupts that
2271 * we've discovered, even if FH interrupt came in just after
2272 * reading CSR_INT. */
6f83eaa1 2273 if (inta_fh & CSR49_FH_INT_RX_MASK)
b481de9c 2274 inta |= CSR_INT_BIT_FH_RX;
6f83eaa1 2275 if (inta_fh & CSR49_FH_INT_TX_MASK)
b481de9c
ZY		 2276 inta |= CSR_INT_BIT_FH_TX;
2277
2278 /* Now service all interrupt bits discovered above. */
2279 if (inta & CSR_INT_BIT_HW_ERR) {
2280 IWL_ERROR("Microcode HW error detected. Restarting.\n");
2281
2282 /* Tell the device to stop sending interrupts */
bb8c093b 2283 iwl4965_disable_interrupts(priv);
b481de9c 2284
bb8c093b 2285 iwl4965_irq_handle_error(priv);
b481de9c
ZY		 2286
2287 handled |= CSR_INT_BIT_HW_ERR;
2288
2289 spin_unlock_irqrestore(&priv->lock, flags);
2290
2291 return;
2292 }
2293
0a6857e7 2294#ifdef CONFIG_IWLWIFI_DEBUG
bf403db8 2295 if (priv->debug_level & (IWL_DL_ISR)) {
b481de9c 2296 /* NIC fires this, but we don't use it, redundant with WAKEUP */
25c03d8e
JP		 2297 if (inta & CSR_INT_BIT_SCD)
2298 IWL_DEBUG_ISR("Scheduler finished to transmit "
2299 "the frame/frames.\n");
b481de9c
ZY		 2300
2301 /* Alive notification via Rx interrupt will do the real work */
2302 if (inta & CSR_INT_BIT_ALIVE)
2303 IWL_DEBUG_ISR("Alive interrupt\n");
2304 }
2305#endif
2306 /* Safely ignore these bits for debug checks below */
25c03d8e 2307 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
b481de9c 2308
9fbab516 2309 /* HW RF KILL switch toggled */
b481de9c
ZY		 2310 if (inta & CSR_INT_BIT_RF_KILL) {
2311 int hw_rf_kill = 0;
3395f6e9 2312 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
b481de9c
ZY		 2313 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
2314 hw_rf_kill = 1;
2315
f3d67999 2316 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
b481de9c
ZY		 2317 hw_rf_kill ? "disable radio":"enable radio");
2318
2319 /* Queue restart only if RF_KILL switch was set to "kill"
2320 * when we loaded driver, and is now set to "enable".
2321 * After we're Alive, RF_KILL gets handled by
3230455d 2322 * iwl4965_rx_card_state_notif() */
53e49093
ZY		 2323 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
2324 clear_bit(STATUS_RF_KILL_HW, &priv->status);
b481de9c 2325 queue_work(priv->workqueue, &priv->restart);
53e49093 2326 }
b481de9c
ZY		 2327
2328 handled |= CSR_INT_BIT_RF_KILL;
2329 }
2330
9fbab516 2331 /* Chip got too hot and stopped itself */
b481de9c
ZY		 2332 if (inta & CSR_INT_BIT_CT_KILL) {
2333 IWL_ERROR("Microcode CT kill error detected.\n");
2334 handled |= CSR_INT_BIT_CT_KILL;
2335 }
2336
2337 /* Error detected by uCode */
2338 if (inta & CSR_INT_BIT_SW_ERR) {
2339 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
2340 inta);
bb8c093b 2341 iwl4965_irq_handle_error(priv);
b481de9c
ZY		 2342 handled |= CSR_INT_BIT_SW_ERR;
2343 }
2344
2345 /* uCode wakes up after power-down sleep */
2346 if (inta & CSR_INT_BIT_WAKEUP) {
2347 IWL_DEBUG_ISR("Wakeup interrupt\n");
a55360e4 2348 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
babcebfa
TW		 2349 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
2350 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
2351 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
2352 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
2353 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
2354 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
b481de9c
ZY		 2355
2356 handled |= CSR_INT_BIT_WAKEUP;
2357 }
2358
2359 /* All uCode command responses, including Tx command responses,
2360 * Rx "responses" (frame-received notification), and other
2361 * notifications from uCode come through here*/
2362 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
a55360e4 2363 iwl_rx_handle(priv);
b481de9c
ZY		 2364 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
2365 }
2366
2367 if (inta & CSR_INT_BIT_FH_TX) {
2368 IWL_DEBUG_ISR("Tx interrupt\n");
2369 handled |= CSR_INT_BIT_FH_TX;
dbb983b7
RR		 2370 /* FH finished to write, send event */
2371 priv->ucode_write_complete = 1;
2372 wake_up_interruptible(&priv->wait_command_queue);
b481de9c
ZY		 2373 }
2374
2375 if (inta & ~handled)
2376 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
2377
2378 if (inta & ~CSR_INI_SET_MASK) {
2379 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
2380 inta & ~CSR_INI_SET_MASK);
2381 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
2382 }
2383
2384 /* Re-enable all interrupts */
0359facc
MA		 2385 /* only Re-enable if diabled by irq */
2386 if (test_bit(STATUS_INT_ENABLED, &priv->status))
2387 iwl4965_enable_interrupts(priv);
b481de9c 2388
0a6857e7 2389#ifdef CONFIG_IWLWIFI_DEBUG
bf403db8 2390 if (priv->debug_level & (IWL_DL_ISR)) {
3395f6e9
TW		 2391 inta = iwl_read32(priv, CSR_INT);
2392 inta_mask = iwl_read32(priv, CSR_INT_MASK);
2393 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
b481de9c
ZY		 2394 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
2395 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
2396 }
2397#endif
2398 spin_unlock_irqrestore(&priv->lock, flags);
2399}
2400
bb8c093b 2401static irqreturn_t iwl4965_isr(int irq, void *data)
b481de9c 2402{
c79dd5b5 2403 struct iwl_priv *priv = data;
b481de9c
ZY		 2404 u32 inta, inta_mask;
2405 u32 inta_fh;
2406 if (!priv)
2407 return IRQ_NONE;
2408
2409 spin_lock(&priv->lock);
2410
2411 /* Disable (but don't clear!) interrupts here to avoid
2412 * back-to-back ISRs and sporadic interrupts from our NIC.
2413 * If we have something to service, the tasklet will re-enable ints.
2414 * If we *don't* have something, we'll re-enable before leaving here. */
3395f6e9
TW		 2415 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
2416 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
b481de9c
ZY		 2417
2418 /* Discover which interrupts are active/pending */
3395f6e9
TW		 2419 inta = iwl_read32(priv, CSR_INT);
2420 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
b481de9c
ZY		 2421
2422 /* Ignore interrupt if there's nothing in NIC to service.
2423 * This may be due to IRQ shared with another device,
2424 * or due to sporadic interrupts thrown from our NIC. */
2425 if (!inta && !inta_fh) {
2426 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
2427 goto none;
2428 }
2429
2430 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
66fbb541
ON		 2431 /* Hardware disappeared. It might have already raised
2432 * an interrupt */
b481de9c 2433 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
66fbb541 2434 goto unplugged;
b481de9c
ZY		 2435 }
2436
2437 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2438 inta, inta_mask, inta_fh);
2439
25c03d8e
JP		 2440 inta &= ~CSR_INT_BIT_SCD;
2441
bb8c093b 2442 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
25c03d8e
JP		 2443 if (likely(inta || inta_fh))
2444 tasklet_schedule(&priv->irq_tasklet);
b481de9c 2445
66fbb541
ON		 2446 unplugged:
2447 spin_unlock(&priv->lock);
b481de9c
ZY		 2448 return IRQ_HANDLED;
2449
2450 none:
2451 /* re-enable interrupts here since we don't have anything to service. */
0359facc
MA		 2452 /* only Re-enable if diabled by irq */
2453 if (test_bit(STATUS_INT_ENABLED, &priv->status))
2454 iwl4965_enable_interrupts(priv);
b481de9c
ZY		 2455 spin_unlock(&priv->lock);
2456 return IRQ_NONE;
2457}
2458
b481de9c
ZY		 2459/* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
2460 * sending probe req. This should be set long enough to hear probe responses
2461 * from more than one AP. */
2462#define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
2463#define IWL_ACTIVE_DWELL_TIME_52 (10)
2464
2465/* For faster active scanning, scan will move to the next channel if fewer than
2466 * PLCP_QUIET_THRESH packets are heard on this channel within
2467 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
2468 * time if it's a quiet channel (nothing responded to our probe, and there's
2469 * no other traffic).
2470 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
2471#define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
2472#define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
2473
2474/* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
2475 * Must be set longer than active dwell time.
2476 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
2477#define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
2478#define IWL_PASSIVE_DWELL_TIME_52 (10)
2479#define IWL_PASSIVE_DWELL_BASE (100)
2480#define IWL_CHANNEL_TUNE_TIME 5
2481
c79dd5b5 2482static inline u16 iwl4965_get_active_dwell_time(struct iwl_priv *priv,
8318d78a 2483 enum ieee80211_band band)
b481de9c 2484{
8318d78a 2485 if (band == IEEE80211_BAND_5GHZ)
b481de9c
ZY		 2486 return IWL_ACTIVE_DWELL_TIME_52;
2487 else
2488 return IWL_ACTIVE_DWELL_TIME_24;
2489}
2490
c79dd5b5 2491static u16 iwl4965_get_passive_dwell_time(struct iwl_priv *priv,
8318d78a 2492 enum ieee80211_band band)
b481de9c 2493{
8318d78a
JB		 2494 u16 active = iwl4965_get_active_dwell_time(priv, band);
2495 u16 passive = (band != IEEE80211_BAND_5GHZ) ?
b481de9c
ZY		 2496 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
2497 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
2498
3109ece1 2499 if (iwl_is_associated(priv)) {
b481de9c
ZY		 2500 /* If we're associated, we clamp the maximum passive
2501 * dwell time to be 98% of the beacon interval (minus
2502 * 2 * channel tune time) */
2503 passive = priv->beacon_int;
2504 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
2505 passive = IWL_PASSIVE_DWELL_BASE;
2506 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
2507 }
2508
2509 if (passive <= active)
2510 passive = active + 1;
2511
2512 return passive;
2513}
2514
c79dd5b5 2515static int iwl4965_get_channels_for_scan(struct iwl_priv *priv,
8318d78a 2516 enum ieee80211_band band,
b481de9c 2517 u8 is_active, u8 direct_mask,
bb8c093b 2518 struct iwl4965_scan_channel *scan_ch)
b481de9c
ZY		 2519{
2520 const struct ieee80211_channel *channels = NULL;
8318d78a 2521 const struct ieee80211_supported_band *sband;
bf85ea4f 2522 const struct iwl_channel_info *ch_info;
b481de9c
ZY		 2523 u16 passive_dwell = 0;
2524 u16 active_dwell = 0;
2525 int added, i;
2526
d1141dfb 2527 sband = iwl_get_hw_mode(priv, band);
8318d78a 2528 if (!sband)
b481de9c
ZY		 2529 return 0;
2530
8318d78a 2531 channels = sband->channels;
b481de9c 2532
8318d78a
JB		 2533 active_dwell = iwl4965_get_active_dwell_time(priv, band);
2534 passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
b481de9c 2535
8318d78a 2536 for (i = 0, added = 0; i < sband->n_channels; i++) {
182e2e66
JB		 2537 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
2538 continue;
2539
8318d78a 2540 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
b481de9c 2541
8622e705 2542 ch_info = iwl_get_channel_info(priv, band,
9fbab516 2543 scan_ch->channel);
b481de9c
ZY		 2544 if (!is_channel_valid(ch_info)) {
2545 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
2546 scan_ch->channel);
2547 continue;
2548 }
2549
2550 if (!is_active || is_channel_passive(ch_info) ||
8318d78a 2551 (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
b481de9c
ZY		 2552 scan_ch->type = 0; /* passive */
2553 else
2554 scan_ch->type = 1; /* active */
2555
2556 if (scan_ch->type & 1)
2557 scan_ch->type |= (direct_mask << 1);
2558
b481de9c
ZY		 2559 scan_ch->active_dwell = cpu_to_le16(active_dwell);
2560 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
2561
9fbab516 2562 /* Set txpower levels to defaults */
b481de9c
ZY		 2563 scan_ch->tpc.dsp_atten = 110;
2564 /* scan_pwr_info->tpc.dsp_atten; */
2565
2566 /*scan_pwr_info->tpc.tx_gain; */
8318d78a 2567 if (band == IEEE80211_BAND_5GHZ)
b481de9c
ZY		 2568 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
2569 else {
2570 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
2571 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
9fbab516 2572 * power level:
8a1b0245 2573 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
b481de9c
ZY		 2574 */
2575 }
2576
2577 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
2578 scan_ch->channel,
2579 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
2580 (scan_ch->type & 1) ?
2581 active_dwell : passive_dwell);
2582
2583 scan_ch++;
2584 added++;
2585 }
2586
2587 IWL_DEBUG_SCAN("total channels to scan %d \n", added);
2588 return added;
2589}
2590
b481de9c
ZY		 2591/******************************************************************************
2592 *
2593 * uCode download functions
2594 *
2595 ******************************************************************************/
2596
c79dd5b5 2597static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
b481de9c 2598{
98c92211
TW		 2599 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
2600 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
2601 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2602 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
2603 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2604 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
b481de9c
ZY		 2605}
2606
edcdf8b2
RR		 2607static void iwl4965_nic_start(struct iwl_priv *priv)
2608{
2609 /* Remove all resets to allow NIC to operate */
2610 iwl_write32(priv, CSR_RESET, 0);
2611}
2612
2613
b481de9c 2614/**
bb8c093b 2615 * iwl4965_read_ucode - Read uCode images from disk file.
b481de9c
ZY		 2616 *
2617 * Copy into buffers for card to fetch via bus-mastering
2618 */
c79dd5b5 2619static int iwl4965_read_ucode(struct iwl_priv *priv)
b481de9c 2620{
bb8c093b 2621 struct iwl4965_ucode *ucode;
90e759d1 2622 int ret;
b481de9c 2623 const struct firmware *ucode_raw;
4bf775cd 2624 const char *name = priv->cfg->fw_name;
b481de9c
ZY		 2625 u8 *src;
2626 size_t len;
2627 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
2628
2629 /* Ask kernel firmware_class module to get the boot firmware off disk.
2630 * request_firmware() is synchronous, file is in memory on return. */
90e759d1
TW		 2631 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
2632 if (ret < 0) {
2633 IWL_ERROR("%s firmware file req failed: Reason %d\n",
2634 name, ret);
b481de9c
ZY		 2635 goto error;
2636 }
2637
2638 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
2639 name, ucode_raw->size);
2640
2641 /* Make sure that we got at least our header! */
2642 if (ucode_raw->size < sizeof(*ucode)) {
2643 IWL_ERROR("File size way too small!\n");
90e759d1 2644 ret = -EINVAL;
b481de9c
ZY		 2645 goto err_release;
2646 }
2647
2648 /* Data from ucode file: header followed by uCode images */
2649 ucode = (void *)ucode_raw->data;
2650
2651 ver = le32_to_cpu(ucode->ver);
2652 inst_size = le32_to_cpu(ucode->inst_size);
2653 data_size = le32_to_cpu(ucode->data_size);
2654 init_size = le32_to_cpu(ucode->init_size);
2655 init_data_size = le32_to_cpu(ucode->init_data_size);
2656 boot_size = le32_to_cpu(ucode->boot_size);
2657
2658 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
2659 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
2660 inst_size);
2661 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
2662 data_size);
2663 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
2664 init_size);
2665 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
2666 init_data_size);
2667 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
2668 boot_size);
2669
2670 /* Verify size of file vs. image size info in file's header */
2671 if (ucode_raw->size < sizeof(*ucode) +
2672 inst_size + data_size + init_size +
2673 init_data_size + boot_size) {
2674
2675 IWL_DEBUG_INFO("uCode file size %d too small\n",
2676 (int)ucode_raw->size);
90e759d1 2677 ret = -EINVAL;
b481de9c
ZY		 2678 goto err_release;
2679 }
2680
2681 /* Verify that uCode images will fit in card's SRAM */
099b40b7 2682 if (inst_size > priv->hw_params.max_inst_size) {
90e759d1
TW		 2683 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
2684 inst_size);
2685 ret = -EINVAL;
b481de9c
ZY		 2686 goto err_release;
2687 }
2688
099b40b7 2689 if (data_size > priv->hw_params.max_data_size) {
90e759d1
TW		 2690 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
2691 data_size);
2692 ret = -EINVAL;
b481de9c
ZY		 2693 goto err_release;
2694 }
099b40b7 2695 if (init_size > priv->hw_params.max_inst_size) {
b481de9c 2696 IWL_DEBUG_INFO
90e759d1
TW		 2697 ("uCode init instr len %d too large to fit in\n",
2698 init_size);
2699 ret = -EINVAL;
b481de9c
ZY		 2700 goto err_release;
2701 }
099b40b7 2702 if (init_data_size > priv->hw_params.max_data_size) {
b481de9c 2703 IWL_DEBUG_INFO
90e759d1
TW		 2704 ("uCode init data len %d too large to fit in\n",
2705 init_data_size);
2706 ret = -EINVAL;
b481de9c
ZY		 2707 goto err_release;
2708 }
099b40b7 2709 if (boot_size > priv->hw_params.max_bsm_size) {
b481de9c 2710 IWL_DEBUG_INFO
90e759d1
TW		 2711 ("uCode boot instr len %d too large to fit in\n",
2712 boot_size);
2713 ret = -EINVAL;
b481de9c
ZY		 2714 goto err_release;
2715 }
2716
2717 /* Allocate ucode buffers for card's bus-master loading ... */
2718
2719 /* Runtime instructions and 2 copies of data:
2720 * 1) unmodified from disk
2721 * 2) backup cache for save/restore during power-downs */
2722 priv->ucode_code.len = inst_size;
98c92211 2723 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
b481de9c
ZY		 2724
2725 priv->ucode_data.len = data_size;
98c92211 2726 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
b481de9c
ZY		 2727
2728 priv->ucode_data_backup.len = data_size;
98c92211 2729 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
b481de9c
ZY		 2730
2731 /* Initialization instructions and data */
90e759d1
TW		 2732 if (init_size && init_data_size) {
2733 priv->ucode_init.len = init_size;
98c92211 2734 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
90e759d1
TW		 2735
2736 priv->ucode_init_data.len = init_data_size;
98c92211 2737 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
90e759d1
TW		 2738
2739 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2740 goto err_pci_alloc;
2741 }
b481de9c
ZY		 2742
2743 /* Bootstrap (instructions only, no data) */
90e759d1
TW		 2744 if (boot_size) {
2745 priv->ucode_boot.len = boot_size;
98c92211 2746 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
b481de9c 2747
90e759d1
TW		 2748 if (!priv->ucode_boot.v_addr)
2749 goto err_pci_alloc;
2750 }
b481de9c
ZY		 2751
2752 /* Copy images into buffers for card's bus-master reads ... */
2753
2754 /* Runtime instructions (first block of data in file) */
2755 src = &ucode->data[0];
2756 len = priv->ucode_code.len;
90e759d1 2757 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
b481de9c
ZY		 2758 memcpy(priv->ucode_code.v_addr, src, len);
2759 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2760 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2761
2762 /* Runtime data (2nd block)
bb8c093b 2763 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
b481de9c
ZY		 2764 src = &ucode->data[inst_size];
2765 len = priv->ucode_data.len;
90e759d1 2766 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
b481de9c
ZY		 2767 memcpy(priv->ucode_data.v_addr, src, len);
2768 memcpy(priv->ucode_data_backup.v_addr, src, len);
2769
2770 /* Initialization instructions (3rd block) */
2771 if (init_size) {
2772 src = &ucode->data[inst_size + data_size];
2773 len = priv->ucode_init.len;
90e759d1
TW		 2774 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
2775 len);
b481de9c
ZY		 2776 memcpy(priv->ucode_init.v_addr, src, len);
2777 }
2778
2779 /* Initialization data (4th block) */
2780 if (init_data_size) {
2781 src = &ucode->data[inst_size + data_size + init_size];
2782 len = priv->ucode_init_data.len;
90e759d1
TW		 2783 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
2784 len);
b481de9c
ZY		 2785 memcpy(priv->ucode_init_data.v_addr, src, len);
2786 }
2787
2788 /* Bootstrap instructions (5th block) */
2789 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
2790 len = priv->ucode_boot.len;
90e759d1 2791 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
b481de9c
ZY		 2792 memcpy(priv->ucode_boot.v_addr, src, len);
2793
2794 /* We have our copies now, allow OS release its copies */
2795 release_firmware(ucode_raw);
2796 return 0;
2797
2798 err_pci_alloc:
2799 IWL_ERROR("failed to allocate pci memory\n");
90e759d1 2800 ret = -ENOMEM;
bb8c093b 2801 iwl4965_dealloc_ucode_pci(priv);
b481de9c
ZY		 2802
2803 err_release:
2804 release_firmware(ucode_raw);
2805
2806 error:
90e759d1 2807 return ret;
b481de9c
ZY		 2808}
2809
b481de9c 2810/**
4a4a9e81 2811 * iwl_alive_start - called after REPLY_ALIVE notification received
b481de9c 2812 * from protocol/runtime uCode (initialization uCode's
4a4a9e81 2813 * Alive gets handled by iwl_init_alive_start()).
b481de9c 2814 */
4a4a9e81 2815static void iwl_alive_start(struct iwl_priv *priv)
b481de9c 2816{
57aab75a 2817 int ret = 0;
b481de9c
ZY		 2818
2819 IWL_DEBUG_INFO("Runtime Alive received.\n");
2820
2821 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2822 /* We had an error bringing up the hardware, so take it
2823 * all the way back down so we can try again */
2824 IWL_DEBUG_INFO("Alive failed.\n");
2825 goto restart;
2826 }
2827
2828 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2829 * This is a paranoid check, because we would not have gotten the
2830 * "runtime" alive if code weren't properly loaded. */
b0692f2f 2831 if (iwl_verify_ucode(priv)) {
b481de9c
ZY		 2832 /* Runtime instruction load was bad;
2833 * take it all the way back down so we can try again */
2834 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
2835 goto restart;
2836 }
2837
bf85ea4f 2838 iwlcore_clear_stations_table(priv);
57aab75a
TW		 2839 ret = priv->cfg->ops->lib->alive_notify(priv);
2840 if (ret) {
b481de9c 2841 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
57aab75a 2842 ret);
b481de9c
ZY		 2843 goto restart;
2844 }
2845
9fbab516 2846 /* After the ALIVE response, we can send host commands to 4965 uCode */
b481de9c
ZY		 2847 set_bit(STATUS_ALIVE, &priv->status);
2848
fee1247a 2849 if (iwl_is_rfkill(priv))
b481de9c
ZY		 2850 return;
2851
36d6825b 2852 ieee80211_wake_queues(priv->hw);
b481de9c
ZY		 2853
2854 priv->active_rate = priv->rates_mask;
2855 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2856
3109ece1 2857 if (iwl_is_associated(priv)) {
c1adf9fb
GG		 2858 struct iwl_rxon_cmd *active_rxon =
2859 (struct iwl_rxon_cmd *)&priv->active_rxon;
b481de9c
ZY		 2860
2861 memcpy(&priv->staging_rxon, &priv->active_rxon,
2862 sizeof(priv->staging_rxon));
2863 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2864 } else {
2865 /* Initialize our rx_config data */
bb8c093b 2866 iwl4965_connection_init_rx_config(priv);
b481de9c
ZY		 2867 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2868 }
2869
9fbab516 2870 /* Configure Bluetooth device coexistence support */
bb8c093b 2871 iwl4965_send_bt_config(priv);
b481de9c 2872
4a4a9e81
TW		 2873 iwl_reset_run_time_calib(priv);
2874
b481de9c 2875 /* Configure the adapter for unassociated operation */
bb8c093b 2876 iwl4965_commit_rxon(priv);
b481de9c
ZY		 2877
2878 /* At this point, the NIC is initialized and operational */
b481de9c 2879 iwl4965_rf_kill_ct_config(priv);
5a66926a 2880
fe00b5a5
RC		 2881 iwl_leds_register(priv);
2882
b481de9c 2883 IWL_DEBUG_INFO("ALIVE processing complete.\n");
a9f46786 2884 set_bit(STATUS_READY, &priv->status);
5a66926a 2885 wake_up_interruptible(&priv->wait_command_queue);
b481de9c
ZY		 2886
2887 if (priv->error_recovering)
bb8c093b 2888 iwl4965_error_recovery(priv);
b481de9c 2889
c8381fdc 2890 iwlcore_low_level_notify(priv, IWLCORE_START_EVT);
84363e6e 2891 ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
c46fbefa
AK		 2892
2893 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2894 iwl4965_set_mode(priv, priv->iw_mode);
2895
b481de9c
ZY		 2896 return;
2897
2898 restart:
2899 queue_work(priv->workqueue, &priv->restart);
2900}
2901
4e39317d 2902static void iwl_cancel_deferred_work(struct iwl_priv *priv);
b481de9c 2903
c79dd5b5 2904static void __iwl4965_down(struct iwl_priv *priv)
b481de9c
ZY		 2905{
2906 unsigned long flags;
2907 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
b481de9c
ZY		 2908
2909 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2910
b481de9c
ZY		 2911 if (!exit_pending)
2912 set_bit(STATUS_EXIT_PENDING, &priv->status);
2913
ab53d8af
MA		 2914 iwl_leds_unregister(priv);
2915
c8381fdc
MA		 2916 iwlcore_low_level_notify(priv, IWLCORE_STOP_EVT);
2917
bf85ea4f 2918 iwlcore_clear_stations_table(priv);
b481de9c
ZY		 2919
2920 /* Unblock any waiting calls */
2921 wake_up_interruptible_all(&priv->wait_command_queue);
2922
b481de9c
ZY		 2923 /* Wipe out the EXIT_PENDING status bit if we are not actually
2924 * exiting the module */
2925 if (!exit_pending)
2926 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2927
2928 /* stop and reset the on-board processor */
3395f6e9 2929 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
b481de9c
ZY		 2930
2931 /* tell the device to stop sending interrupts */
0359facc 2932 spin_lock_irqsave(&priv->lock, flags);
bb8c093b 2933 iwl4965_disable_interrupts(priv);
0359facc
MA		 2934 spin_unlock_irqrestore(&priv->lock, flags);
2935 iwl_synchronize_irq(priv);
b481de9c
ZY		 2936
2937 if (priv->mac80211_registered)
2938 ieee80211_stop_queues(priv->hw);
2939
bb8c093b 2940 /* If we have not previously called iwl4965_init() then
b481de9c 2941 * clear all bits but the RF Kill and SUSPEND bits and return */
fee1247a 2942 if (!iwl_is_init(priv)) {
b481de9c
ZY		 2943 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2944 STATUS_RF_KILL_HW |
2945 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2946 STATUS_RF_KILL_SW |
9788864e
RC		 2947 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2948 STATUS_GEO_CONFIGURED |
b481de9c
ZY		 2949 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2950 STATUS_IN_SUSPEND;
2951 goto exit;
2952 }
2953
2954 /* ...otherwise clear out all the status bits but the RF Kill and
2955 * SUSPEND bits and continue taking the NIC down. */
2956 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2957 STATUS_RF_KILL_HW |
2958 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2959 STATUS_RF_KILL_SW |
9788864e
RC		 2960 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2961 STATUS_GEO_CONFIGURED |
b481de9c
ZY		 2962 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2963 STATUS_IN_SUSPEND |
2964 test_bit(STATUS_FW_ERROR, &priv->status) <<
2965 STATUS_FW_ERROR;
2966
2967 spin_lock_irqsave(&priv->lock, flags);
3395f6e9 2968 iwl_clear_bit(priv, CSR_GP_CNTRL,
9fbab516 2969 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
b481de9c
ZY		 2970 spin_unlock_irqrestore(&priv->lock, flags);
2971
da1bc453 2972 iwl_txq_ctx_stop(priv);
b3bbacb7 2973 iwl_rxq_stop(priv);
b481de9c
ZY		 2974
2975 spin_lock_irqsave(&priv->lock, flags);
3395f6e9
TW		 2976 if (!iwl_grab_nic_access(priv)) {
2977 iwl_write_prph(priv, APMG_CLK_DIS_REG,
b481de9c 2978 APMG_CLK_VAL_DMA_CLK_RQT);
3395f6e9 2979 iwl_release_nic_access(priv);
b481de9c
ZY		 2980 }
2981 spin_unlock_irqrestore(&priv->lock, flags);
2982
2983 udelay(5);
2984
7f066108
TW		 2985 /* FIXME: apm_ops.suspend(priv) */
2986 priv->cfg->ops->lib->apm_ops.reset(priv);
399f4900 2987 priv->cfg->ops->lib->free_shared_mem(priv);
b481de9c
ZY		 2988
2989 exit:
885ba202 2990 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
b481de9c
ZY		 2991
2992 if (priv->ibss_beacon)
2993 dev_kfree_skb(priv->ibss_beacon);
2994 priv->ibss_beacon = NULL;
2995
2996 /* clear out any free frames */
fcab423d 2997 iwl_clear_free_frames(priv);
b481de9c
ZY		 2998}
2999
c79dd5b5 3000static void iwl4965_down(struct iwl_priv *priv)
b481de9c
ZY		 3001{
3002 mutex_lock(&priv->mutex);
bb8c093b 3003 __iwl4965_down(priv);
b481de9c 3004 mutex_unlock(&priv->mutex);
b24d22b1 3005
4e39317d 3006 iwl_cancel_deferred_work(priv);
b481de9c
ZY		 3007}
3008
3009#define MAX_HW_RESTARTS 5
3010
c79dd5b5 3011static int __iwl4965_up(struct iwl_priv *priv)
b481de9c 3012{
57aab75a
TW		 3013 int i;
3014 int ret;
b481de9c
ZY		 3015
3016 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3017 IWL_WARNING("Exit pending; will not bring the NIC up\n");
3018 return -EIO;
3019 }
3020
e903fbd4
RC		 3021 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
3022 IWL_ERROR("ucode not available for device bringup\n");
3023 return -EIO;
3024 }
3025
e655b9f0 3026 /* If platform's RF_KILL switch is NOT set to KILL */
3395f6e9 3027 if (iwl_read32(priv, CSR_GP_CNTRL) &
e655b9f0
ZY		 3028 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3029 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3030 else {
3031 set_bit(STATUS_RF_KILL_HW, &priv->status);
3032 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
ad97edd2 3033 iwl_rfkill_set_hw_state(priv);
e655b9f0
ZY		 3034 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
3035 return -ENODEV;
3036 }
b481de9c
ZY		 3037 }
3038
ad97edd2 3039 iwl_rfkill_set_hw_state(priv);
3395f6e9 3040 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
b481de9c 3041
399f4900
RR		 3042 ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
3043 if (ret) {
3044 IWL_ERROR("Unable to allocate shared memory\n");
3045 return ret;
3046 }
3047
1053d35f 3048 ret = iwl_hw_nic_init(priv);
57aab75a
TW		 3049 if (ret) {
3050 IWL_ERROR("Unable to init nic\n");
3051 return ret;
b481de9c
ZY		 3052 }
3053
3054 /* make sure rfkill handshake bits are cleared */
3395f6e9
TW		 3055 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3056 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
b481de9c
ZY		 3057 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3058
3059 /* clear (again), then enable host interrupts */
3395f6e9 3060 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
bb8c093b 3061 iwl4965_enable_interrupts(priv);
b481de9c
ZY		 3062
3063 /* really make sure rfkill handshake bits are cleared */
3395f6e9
TW		 3064 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3065 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
b481de9c
ZY		 3066
3067 /* Copy original ucode data image from disk into backup cache.
3068 * This will be used to initialize the on-board processor's
3069 * data SRAM for a clean start when the runtime program first loads. */
3070 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
5a66926a 3071 priv->ucode_data.len);
b481de9c 3072
e655b9f0 3073 /* We return success when we resume from suspend and rf_kill is on. */
64e72c3e
MA		 3074 if (test_bit(STATUS_RF_KILL_HW, &priv->status) ||
3075 test_bit(STATUS_RF_KILL_SW, &priv->status))
b481de9c 3076 return 0;
b481de9c
ZY		 3077
3078 for (i = 0; i < MAX_HW_RESTARTS; i++) {
3079
bf85ea4f 3080 iwlcore_clear_stations_table(priv);
b481de9c
ZY		 3081
3082 /* load bootstrap state machine,
3083 * load bootstrap program into processor's memory,
3084 * prepare to load the "initialize" uCode */
57aab75a 3085 ret = priv->cfg->ops->lib->load_ucode(priv);
b481de9c 3086
57aab75a
TW		 3087 if (ret) {
3088 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
b481de9c
ZY		 3089 continue;
3090 }
3091
f3d5b45b
EG		 3092 /* Clear out the uCode error bit if it is set */
3093 clear_bit(STATUS_FW_ERROR, &priv->status);
3094
b481de9c 3095 /* start card; "initialize" will load runtime ucode */
edcdf8b2 3096 iwl4965_nic_start(priv);
b481de9c 3097
b481de9c
ZY		 3098 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
3099
3100 return 0;
3101 }
3102
3103 set_bit(STATUS_EXIT_PENDING, &priv->status);
bb8c093b 3104 __iwl4965_down(priv);
64e72c3e 3105 clear_bit(STATUS_EXIT_PENDING, &priv->status);
b481de9c
ZY		 3106
3107 /* tried to restart and config the device for as long as our
3108 * patience could withstand */
3109 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
3110 return -EIO;
3111}
3112
3113
3114/*****************************************************************************
3115 *
3116 * Workqueue callbacks
3117 *
3118 *****************************************************************************/
3119
4a4a9e81 3120static void iwl_bg_init_alive_start(struct work_struct *data)
b481de9c 3121{
c79dd5b5
TW		 3122 struct iwl_priv *priv =
3123 container_of(data, struct iwl_priv, init_alive_start.work);
b481de9c
ZY		 3124
3125 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3126 return;
3127
3128 mutex_lock(&priv->mutex);
f3ccc08c 3129 priv->cfg->ops->lib->init_alive_start(priv);
b481de9c
ZY		 3130 mutex_unlock(&priv->mutex);
3131}
3132
4a4a9e81 3133static void iwl_bg_alive_start(struct work_struct *data)
b481de9c 3134{
c79dd5b5
TW		 3135 struct iwl_priv *priv =
3136 container_of(data, struct iwl_priv, alive_start.work);
b481de9c
ZY		 3137
3138 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3139 return;
3140
3141 mutex_lock(&priv->mutex);
4a4a9e81 3142 iwl_alive_start(priv);
b481de9c
ZY		 3143 mutex_unlock(&priv->mutex);
3144}
3145
bb8c093b 3146static void iwl4965_bg_rf_kill(struct work_struct *work)
b481de9c 3147{
c79dd5b5 3148 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
b481de9c
ZY		 3149
3150 wake_up_interruptible(&priv->wait_command_queue);
3151
3152 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3153 return;
3154
3155 mutex_lock(&priv->mutex);
3156
fee1247a 3157 if (!iwl_is_rfkill(priv)) {
f3d67999 3158 IWL_DEBUG(IWL_DL_RF_KILL,
b481de9c
ZY		 3159 "HW and/or SW RF Kill no longer active, restarting "
3160 "device\n");
3161 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
3162 queue_work(priv->workqueue, &priv->restart);
3163 } else {
ad97edd2
MA		 3164 /* make sure mac80211 stop sending Tx frame */
3165 if (priv->mac80211_registered)
3166 ieee80211_stop_queues(priv->hw);
b481de9c
ZY		 3167
3168 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
3169 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3170 "disabled by SW switch\n");
3171 else
3172 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
3173 "Kill switch must be turned off for "
3174 "wireless networking to work.\n");
3175 }
ad97edd2
MA		 3176 iwl_rfkill_set_hw_state(priv);
3177
b481de9c
ZY		 3178 mutex_unlock(&priv->mutex);
3179}
3180
4419e39b
AK		 3181static void iwl4965_bg_set_monitor(struct work_struct *work)
3182{
3183 struct iwl_priv *priv = container_of(work,
3184 struct iwl_priv, set_monitor);
c46fbefa 3185 int ret;
4419e39b
AK		 3186
3187 IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
3188
3189 mutex_lock(&priv->mutex);
3190
c46fbefa
AK		 3191 ret = iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR);
3192
3193 if (ret) {
3194 if (ret == -EAGAIN)
3195 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
3196 else
3197 IWL_ERROR("iwl4965_set_mode() failed ret = %d\n", ret);
3198 }
4419e39b
AK		 3199
3200 mutex_unlock(&priv->mutex);
3201}
3202
b481de9c
ZY		 3203#define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
3204
bb8c093b 3205static void iwl4965_bg_scan_check(struct work_struct *data)
b481de9c 3206{
c79dd5b5
TW		 3207 struct iwl_priv *priv =
3208 container_of(data, struct iwl_priv, scan_check.work);
b481de9c
ZY		 3209
3210 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3211 return;
3212
3213 mutex_lock(&priv->mutex);
3214 if (test_bit(STATUS_SCANNING, &priv->status) ||
3215 test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
f3d67999
EK		 3216 IWL_DEBUG(IWL_DL_SCAN, "Scan completion watchdog resetting "
3217 "adapter (%dms)\n",
3218 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
052c4b9f 3219
b481de9c 3220 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
bb8c093b 3221 iwl4965_send_scan_abort(priv);
b481de9c
ZY		 3222 }
3223 mutex_unlock(&priv->mutex);
3224}
3225
bb8c093b 3226static void iwl4965_bg_request_scan(struct work_struct *data)
b481de9c 3227{
c79dd5b5
TW		 3228 struct iwl_priv *priv =
3229 container_of(data, struct iwl_priv, request_scan);
857485c0 3230 struct iwl_host_cmd cmd = {
b481de9c 3231 .id = REPLY_SCAN_CMD,
bb8c093b 3232 .len = sizeof(struct iwl4965_scan_cmd),
b481de9c
ZY		 3233 .meta.flags = CMD_SIZE_HUGE,
3234 };
bb8c093b 3235 struct iwl4965_scan_cmd *scan;
b481de9c 3236 struct ieee80211_conf *conf = NULL;
78330fdd 3237 u16 cmd_len;
8318d78a 3238 enum ieee80211_band band;
78330fdd 3239 u8 direct_mask;
857485c0 3240 int ret = 0;
b481de9c
ZY		 3241
3242 conf = ieee80211_get_hw_conf(priv->hw);
3243
3244 mutex_lock(&priv->mutex);
3245
fee1247a 3246 if (!iwl_is_ready(priv)) {
b481de9c
ZY		 3247 IWL_WARNING("request scan called when driver not ready.\n");
3248 goto done;
3249 }
3250
3251 /* Make sure the scan wasn't cancelled before this queued work
3252 * was given the chance to run... */
3253 if (!test_bit(STATUS_SCANNING, &priv->status))
3254 goto done;
3255
3256 /* This should never be called or scheduled if there is currently
3257 * a scan active in the hardware. */
3258 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
3259 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
3260 "Ignoring second request.\n");
857485c0 3261 ret = -EIO;
b481de9c
ZY		 3262 goto done;
3263 }
3264
3265 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3266 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
3267 goto done;
3268 }
3269
3270 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3271 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
3272 goto done;
3273 }
3274
fee1247a 3275 if (iwl_is_rfkill(priv)) {
b481de9c
ZY		 3276 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
3277 goto done;
3278 }
3279
3280 if (!test_bit(STATUS_READY, &priv->status)) {
3281 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
3282 goto done;
3283 }
3284
3285 if (!priv->scan_bands) {
3286 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
3287 goto done;
3288 }
3289
3290 if (!priv->scan) {
bb8c093b 3291 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
b481de9c
ZY		 3292 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
3293 if (!priv->scan) {
857485c0 3294 ret = -ENOMEM;
b481de9c
ZY		 3295 goto done;
3296 }
3297 }
3298 scan = priv->scan;
bb8c093b 3299 memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
b481de9c
ZY		 3300
3301 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
3302 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
3303
3109ece1 3304 if (iwl_is_associated(priv)) {
b481de9c
ZY		 3305 u16 interval = 0;
3306 u32 extra;
3307 u32 suspend_time = 100;
3308 u32 scan_suspend_time = 100;
3309 unsigned long flags;
3310
3311 IWL_DEBUG_INFO("Scanning while associated...\n");
3312
3313 spin_lock_irqsave(&priv->lock, flags);
3314 interval = priv->beacon_int;
3315 spin_unlock_irqrestore(&priv->lock, flags);
3316
3317 scan->suspend_time = 0;
052c4b9f 3318 scan->max_out_time = cpu_to_le32(200 * 1024);
b481de9c
ZY		 3319 if (!interval)
3320 interval = suspend_time;
3321
3322 extra = (suspend_time / interval) << 22;
3323 scan_suspend_time = (extra |
3324 ((suspend_time % interval) * 1024));
3325 scan->suspend_time = cpu_to_le32(scan_suspend_time);
3326 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
3327 scan_suspend_time, interval);
3328 }
3329
3330 /* We should add the ability for user to lock to PASSIVE ONLY */
3331 if (priv->one_direct_scan) {
3332 IWL_DEBUG_SCAN
3333 ("Kicking off one direct scan for '%s'\n",
bb8c093b 3334 iwl4965_escape_essid(priv->direct_ssid,
b481de9c
ZY		 3335 priv->direct_ssid_len));
3336 scan->direct_scan[0].id = WLAN_EID_SSID;
3337 scan->direct_scan[0].len = priv->direct_ssid_len;
3338 memcpy(scan->direct_scan[0].ssid,
3339 priv->direct_ssid, priv->direct_ssid_len);
3340 direct_mask = 1;
3109ece1 3341 } else if (!iwl_is_associated(priv) && priv->essid_len) {
786b4557
BM		 3342 IWL_DEBUG_SCAN
3343 ("Kicking off one direct scan for '%s' when not associated\n",
3344 iwl4965_escape_essid(priv->essid, priv->essid_len));
b481de9c
ZY		 3345 scan->direct_scan[0].id = WLAN_EID_SSID;
3346 scan->direct_scan[0].len = priv->essid_len;
3347 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
3348 direct_mask = 1;
857485c0 3349 } else {
786b4557 3350 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
b481de9c 3351 direct_mask = 0;
857485c0 3352 }
b481de9c 3353
b481de9c 3354 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
5425e490 3355 scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
b481de9c
ZY		 3356 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
3357
b481de9c
ZY		 3358
3359 switch (priv->scan_bands) {
3360 case 2:
3361 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
3362 scan->tx_cmd.rate_n_flags =
bb8c093b 3363 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
b481de9c
ZY		 3364 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
3365
3366 scan->good_CRC_th = 0;
8318d78a 3367 band = IEEE80211_BAND_2GHZ;
b481de9c
ZY		 3368 break;
3369
3370 case 1:
3371 scan->tx_cmd.rate_n_flags =
bb8c093b 3372 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
b481de9c
ZY		 3373 RATE_MCS_ANT_B_MSK);
3374 scan->good_CRC_th = IWL_GOOD_CRC_TH;
8318d78a 3375 band = IEEE80211_BAND_5GHZ;
b481de9c
ZY		 3376 break;
3377
3378 default:
3379 IWL_WARNING("Invalid scan band count\n");
3380 goto done;
3381 }
3382
78330fdd
TW		 3383 /* We don't build a direct scan probe request; the uCode will do
3384 * that based on the direct_mask added to each channel entry */
3385 cmd_len = iwl4965_fill_probe_req(priv, band,
3386 (struct ieee80211_mgmt *)scan->data,
3387 IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
3388
3389 scan->tx_cmd.len = cpu_to_le16(cmd_len);
b481de9c
ZY		 3390 /* select Rx chains */
3391
3392 /* Force use of chains B and C (0x6) for scan Rx.
3393 * Avoid A (0x1) because of its off-channel reception on A-band.
3394 * MIMO is not used here, but value is required to make uCode happy. */
3395 scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
3396 cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
3397 (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
3398 (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
3399
3400 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
3401 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
3402
786b4557 3403 if (direct_mask)
26c0f03f
RC		 3404 scan->channel_count =
3405 iwl4965_get_channels_for_scan(
3406 priv, band, 1, /* active */
3407 direct_mask,
3408 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
786b4557 3409 else
26c0f03f
RC		 3410 scan->channel_count =
3411 iwl4965_get_channels_for_scan(
3412 priv, band, 0, /* passive */
3413 direct_mask,
3414 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
b481de9c 3415
5da4b55f
MA		 3416 scan->filter_flags |= (RXON_FILTER_ACCEPT_GRP_MSK |
3417 RXON_FILTER_BCON_AWARE_MSK);
b481de9c 3418 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
bb8c093b 3419 scan->channel_count * sizeof(struct iwl4965_scan_channel);
b481de9c
ZY		 3420 cmd.data = scan;
3421 scan->len = cpu_to_le16(cmd.len);
3422
3423 set_bit(STATUS_SCAN_HW, &priv->status);
857485c0
TW		 3424 ret = iwl_send_cmd_sync(priv, &cmd);
3425 if (ret)
b481de9c
ZY		 3426 goto done;
3427
3428 queue_delayed_work(priv->workqueue, &priv->scan_check,
3429 IWL_SCAN_CHECK_WATCHDOG);
3430
3431 mutex_unlock(&priv->mutex);
3432 return;
3433
3434 done:
01ebd063 3435 /* inform mac80211 scan aborted */
b481de9c
ZY		 3436 queue_work(priv->workqueue, &priv->scan_completed);
3437 mutex_unlock(&priv->mutex);
3438}
3439
16e727e8
EG		 3440static void iwl_bg_run_time_calib_work(struct work_struct *work)
3441{
3442 struct iwl_priv *priv = container_of(work, struct iwl_priv,
3443 run_time_calib_work);
3444
3445 mutex_lock(&priv->mutex);
3446
3447 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
3448 test_bit(STATUS_SCANNING, &priv->status)) {
3449 mutex_unlock(&priv->mutex);
3450 return;
3451 }
3452
3453 if (priv->start_calib) {
3454 iwl_chain_noise_calibration(priv, &priv->statistics);
3455
3456 iwl_sensitivity_calibration(priv, &priv->statistics);
3457 }
3458
3459 mutex_unlock(&priv->mutex);
3460 return;
3461}
3462
bb8c093b 3463static void iwl4965_bg_up(struct work_struct *data)
b481de9c 3464{
c79dd5b5 3465 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
b481de9c
ZY		 3466
3467 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3468 return;
3469
3470 mutex_lock(&priv->mutex);
bb8c093b 3471 __iwl4965_up(priv);
b481de9c
ZY		 3472 mutex_unlock(&priv->mutex);
3473}
3474
bb8c093b 3475static void iwl4965_bg_restart(struct work_struct *data)
b481de9c 3476{
c79dd5b5 3477 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
b481de9c
ZY		 3478
3479 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3480 return;
3481
bb8c093b 3482 iwl4965_down(priv);
b481de9c
ZY		 3483 queue_work(priv->workqueue, &priv->up);
3484}
3485
bb8c093b 3486static void iwl4965_bg_rx_replenish(struct work_struct *data)
b481de9c 3487{
c79dd5b5
TW		 3488 struct iwl_priv *priv =
3489 container_of(data, struct iwl_priv, rx_replenish);
b481de9c
ZY		 3490
3491 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3492 return;
3493
3494 mutex_lock(&priv->mutex);
a55360e4 3495 iwl_rx_replenish(priv);
b481de9c
ZY		 3496 mutex_unlock(&priv->mutex);
3497}
3498
7878a5a4
MA		 3499#define IWL_DELAY_NEXT_SCAN (HZ*2)
3500
508e32e1 3501static void iwl4965_post_associate(struct iwl_priv *priv)
b481de9c 3502{
b481de9c 3503 struct ieee80211_conf *conf = NULL;
857485c0 3504 int ret = 0;
0795af57 3505 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 3506
3507 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
3508 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
3509 return;
3510 }
3511
0795af57
JP		 3512 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
3513 priv->assoc_id,
3514 print_mac(mac, priv->active_rxon.bssid_addr));
b481de9c
ZY		 3515
3516
3517 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3518 return;
3519
b481de9c 3520
508e32e1 3521 if (!priv->vif || !priv->is_open)
948c171c 3522 return;
508e32e1 3523
bb8c093b 3524 iwl4965_scan_cancel_timeout(priv, 200);
052c4b9f 3525
b481de9c
ZY		 3526 conf = ieee80211_get_hw_conf(priv->hw);
3527
3528 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
bb8c093b 3529 iwl4965_commit_rxon(priv);
b481de9c 3530
bb8c093b
CH		 3531 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
3532 iwl4965_setup_rxon_timing(priv);
857485c0 3533 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
b481de9c 3534 sizeof(priv->rxon_timing), &priv->rxon_timing);
857485c0 3535 if (ret)
b481de9c
ZY		 3536 IWL_WARNING("REPLY_RXON_TIMING failed - "
3537 "Attempting to continue.\n");
3538
3539 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3540
fd105e79 3541 if (priv->current_ht_config.is_ht)
47c5196e 3542 iwl_set_rxon_ht(priv, &priv->current_ht_config);
4f85f5b3 3543
c7de35cd 3544 iwl_set_rxon_chain(priv);
b481de9c
ZY		 3545 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3546
3547 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
3548 priv->assoc_id, priv->beacon_int);
3549
3550 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3551 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3552 else
3553 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3554
3555 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3556 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
3557 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3558 else
3559 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3560
3561 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
3562 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3563
3564 }
3565
bb8c093b 3566 iwl4965_commit_rxon(priv);
b481de9c
ZY		 3567
3568 switch (priv->iw_mode) {
3569 case IEEE80211_IF_TYPE_STA:
bb8c093b 3570 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
b481de9c
ZY		 3571 break;
3572
3573 case IEEE80211_IF_TYPE_IBSS:
3574
c46fbefa
AK		 3575 /* assume default assoc id */
3576 priv->assoc_id = 1;
b481de9c 3577
4f40e4d9 3578 iwl_rxon_add_station(priv, priv->bssid, 0);
bb8c093b
CH		 3579 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
3580 iwl4965_send_beacon_cmd(priv);
b481de9c
ZY		 3581
3582 break;
3583
3584 default:
3585 IWL_ERROR("%s Should not be called in %d mode\n",
3586 __FUNCTION__, priv->iw_mode);
3587 break;
3588 }
3589
bb8c093b 3590 iwl4965_sequence_reset(priv);
b481de9c 3591
b481de9c 3592 /* Enable Rx differential gain and sensitivity calibrations */
f0832f13 3593 iwl_chain_noise_reset(priv);
b481de9c 3594 priv->start_calib = 1;
b481de9c
ZY		 3595
3596 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
3597 priv->assoc_station_added = 1;
3598
bb8c093b 3599 iwl4965_activate_qos(priv, 0);
292ae174 3600
5da4b55f 3601 iwl_power_update_mode(priv, 0);
7878a5a4
MA		 3602 /* we have just associated, don't start scan too early */
3603 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
508e32e1
RC		 3604}
3605
3606
3607static void iwl4965_bg_post_associate(struct work_struct *data)
3608{
3609 struct iwl_priv *priv = container_of(data, struct iwl_priv,
3610 post_associate.work);
3611
3612 mutex_lock(&priv->mutex);
3613 iwl4965_post_associate(priv);
b481de9c 3614 mutex_unlock(&priv->mutex);
508e32e1 3615
b481de9c
ZY		 3616}
3617
bb8c093b 3618static void iwl4965_bg_abort_scan(struct work_struct *work)
b481de9c 3619{
c79dd5b5 3620 struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
b481de9c 3621
fee1247a 3622 if (!iwl_is_ready(priv))
b481de9c
ZY		 3623 return;
3624
3625 mutex_lock(&priv->mutex);
3626
3627 set_bit(STATUS_SCAN_ABORTING, &priv->status);
bb8c093b 3628 iwl4965_send_scan_abort(priv);
b481de9c
ZY		 3629
3630 mutex_unlock(&priv->mutex);
3631}
3632
76bb77e0
ZY		 3633static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
3634
bb8c093b 3635static void iwl4965_bg_scan_completed(struct work_struct *work)
b481de9c 3636{
c79dd5b5
TW		 3637 struct iwl_priv *priv =
3638 container_of(work, struct iwl_priv, scan_completed);
b481de9c 3639
630fe9b6 3640 IWL_DEBUG_SCAN("SCAN complete scan\n");
b481de9c
ZY		 3641
3642 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3643 return;
3644
a0646470
ZY		 3645 if (test_bit(STATUS_CONF_PENDING, &priv->status))
3646 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
76bb77e0 3647
b481de9c
ZY		 3648 ieee80211_scan_completed(priv->hw);
3649
3650 /* Since setting the TXPOWER may have been deferred while
3651 * performing the scan, fire one off */
3652 mutex_lock(&priv->mutex);
630fe9b6 3653 iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
b481de9c
ZY		 3654 mutex_unlock(&priv->mutex);
3655}
3656
3657/*****************************************************************************
3658 *
3659 * mac80211 entry point functions
3660 *
3661 *****************************************************************************/
3662
5a66926a
ZY		 3663#define UCODE_READY_TIMEOUT (2 * HZ)
3664
bb8c093b 3665static int iwl4965_mac_start(struct ieee80211_hw *hw)
b481de9c 3666{
c79dd5b5 3667 struct iwl_priv *priv = hw->priv;
5a66926a 3668 int ret;
b481de9c
ZY		 3669
3670 IWL_DEBUG_MAC80211("enter\n");
3671
5a66926a
ZY		 3672 if (pci_enable_device(priv->pci_dev)) {
3673 IWL_ERROR("Fail to pci_enable_device\n");
3674 return -ENODEV;
3675 }
3676 pci_restore_state(priv->pci_dev);
3677 pci_enable_msi(priv->pci_dev);
3678
3679 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
3680 DRV_NAME, priv);
3681 if (ret) {
3682 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
3683 goto out_disable_msi;
3684 }
3685
b481de9c
ZY		 3686 /* we should be verifying the device is ready to be opened */
3687 mutex_lock(&priv->mutex);
3688
c1adf9fb 3689 memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
5a66926a
ZY		 3690 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3691 * ucode filename and max sizes are card-specific. */
b481de9c 3692
5a66926a
ZY		 3693 if (!priv->ucode_code.len) {
3694 ret = iwl4965_read_ucode(priv);
3695 if (ret) {
3696 IWL_ERROR("Could not read microcode: %d\n", ret);
3697 mutex_unlock(&priv->mutex);
3698 goto out_release_irq;
3699 }
3700 }
b481de9c 3701
e655b9f0 3702 ret = __iwl4965_up(priv);
5a66926a 3703
b481de9c 3704 mutex_unlock(&priv->mutex);
5a66926a 3705
e655b9f0
ZY		 3706 if (ret)
3707 goto out_release_irq;
3708
3709 IWL_DEBUG_INFO("Start UP work done.\n");
3710
3711 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
3712 return 0;
3713
fe9b6b72 3714 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
5a66926a 3715 * mac80211 will not be run successfully. */
fe9b6b72
RR		 3716 if (priv->ucode_type == UCODE_RT) {
3717 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3718 test_bit(STATUS_READY, &priv->status),
3719 UCODE_READY_TIMEOUT);
3720 if (!ret) {
3721 if (!test_bit(STATUS_READY, &priv->status)) {
3722 IWL_ERROR("START_ALIVE timeout after %dms.\n",
3723 jiffies_to_msecs(UCODE_READY_TIMEOUT));
3724 ret = -ETIMEDOUT;
3725 goto out_release_irq;
3726 }
5a66926a 3727 }
5a66926a 3728
fe9b6b72
RR		 3729 priv->is_open = 1;
3730 }
b481de9c
ZY		 3731 IWL_DEBUG_MAC80211("leave\n");
3732 return 0;
5a66926a
ZY		 3733
3734out_release_irq:
3735 free_irq(priv->pci_dev->irq, priv);
3736out_disable_msi:
3737 pci_disable_msi(priv->pci_dev);
e655b9f0
ZY		 3738 pci_disable_device(priv->pci_dev);
3739 priv->is_open = 0;
3740 IWL_DEBUG_MAC80211("leave - failed\n");
5a66926a 3741 return ret;
b481de9c
ZY		 3742}
3743
bb8c093b 3744static void iwl4965_mac_stop(struct ieee80211_hw *hw)
b481de9c 3745{
c79dd5b5 3746 struct iwl_priv *priv = hw->priv;
b481de9c
ZY		 3747
3748 IWL_DEBUG_MAC80211("enter\n");
948c171c 3749
e655b9f0
ZY		 3750 if (!priv->is_open) {
3751 IWL_DEBUG_MAC80211("leave - skip\n");
3752 return;
3753 }
3754
b481de9c 3755 priv->is_open = 0;
5a66926a 3756
fee1247a 3757 if (iwl_is_ready_rf(priv)) {
e655b9f0
ZY		 3758 /* stop mac, cancel any scan request and clear
3759 * RXON_FILTER_ASSOC_MSK BIT
3760 */
5a66926a
ZY		 3761 mutex_lock(&priv->mutex);
3762 iwl4965_scan_cancel_timeout(priv, 100);
3763 cancel_delayed_work(&priv->post_associate);
fde3571f 3764 mutex_unlock(&priv->mutex);
fde3571f
MA		 3765 }
3766
5a66926a
ZY		 3767 iwl4965_down(priv);
3768
3769 flush_workqueue(priv->workqueue);
3770 free_irq(priv->pci_dev->irq, priv);
3771 pci_disable_msi(priv->pci_dev);
3772 pci_save_state(priv->pci_dev);
3773 pci_disable_device(priv->pci_dev);
948c171c 3774
b481de9c 3775 IWL_DEBUG_MAC80211("leave\n");
b481de9c
ZY		 3776}
3777
e039fa4a 3778static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
b481de9c 3779{
c79dd5b5 3780 struct iwl_priv *priv = hw->priv;
b481de9c
ZY		 3781
3782 IWL_DEBUG_MAC80211("enter\n");
3783
3784 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
3785 IWL_DEBUG_MAC80211("leave - monitor\n");
3786 return -1;
3787 }
3788
3789 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
e039fa4a 3790 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
b481de9c 3791
e039fa4a 3792 if (iwl_tx_skb(priv, skb))
b481de9c
ZY		 3793 dev_kfree_skb_any(skb);
3794
3795 IWL_DEBUG_MAC80211("leave\n");
3796 return 0;
3797}
3798
bb8c093b 3799static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
b481de9c
ZY		 3800 struct ieee80211_if_init_conf *conf)
3801{
c79dd5b5 3802 struct iwl_priv *priv = hw->priv;
b481de9c 3803 unsigned long flags;
0795af57 3804 DECLARE_MAC_BUF(mac);
b481de9c 3805
32bfd35d 3806 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
b481de9c 3807
32bfd35d
JB		 3808 if (priv->vif) {
3809 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
75849d28 3810 return -EOPNOTSUPP;
b481de9c
ZY		 3811 }
3812
3813 spin_lock_irqsave(&priv->lock, flags);
32bfd35d 3814 priv->vif = conf->vif;
b481de9c
ZY		 3815
3816 spin_unlock_irqrestore(&priv->lock, flags);
3817
3818 mutex_lock(&priv->mutex);
864792e3
TW		 3819
3820 if (conf->mac_addr) {
3821 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
3822 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
3823 }
b481de9c 3824
c46fbefa
AK		 3825 if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
3826 /* we are not ready, will run again when ready */
3827 set_bit(STATUS_MODE_PENDING, &priv->status);
5a66926a 3828
b481de9c
ZY		 3829 mutex_unlock(&priv->mutex);
3830
5a66926a 3831 IWL_DEBUG_MAC80211("leave\n");
b481de9c
ZY		 3832 return 0;
3833}
3834
3835/**
bb8c093b 3836 * iwl4965_mac_config - mac80211 config callback
b481de9c
ZY		 3837 *
3838 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
3839 * be set inappropriately and the driver currently sets the hardware up to
3840 * use it whenever needed.
3841 */
bb8c093b 3842static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
b481de9c 3843{
c79dd5b5 3844 struct iwl_priv *priv = hw->priv;
bf85ea4f 3845 const struct iwl_channel_info *ch_info;
b481de9c 3846 unsigned long flags;
76bb77e0 3847 int ret = 0;
82a66bbb 3848 u16 channel;
b481de9c
ZY		 3849
3850 mutex_lock(&priv->mutex);
8318d78a 3851 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
b481de9c 3852
12342c47
ZY		 3853 priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
3854
64e72c3e
MA		 3855
3856 if (priv->cfg->ops->lib->radio_kill_sw &&
3857 priv->cfg->ops->lib->radio_kill_sw(priv, !conf->radio_enabled)) {
3858 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
3859 mutex_unlock(&priv->mutex);
3860 }
3861
fee1247a 3862 if (!iwl_is_ready(priv)) {
b481de9c 3863 IWL_DEBUG_MAC80211("leave - not ready\n");
76bb77e0
ZY		 3864 ret = -EIO;
3865 goto out;
b481de9c
ZY		 3866 }
3867
1ea87396 3868 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
b481de9c 3869 test_bit(STATUS_SCANNING, &priv->status))) {
a0646470
ZY		 3870 IWL_DEBUG_MAC80211("leave - scanning\n");
3871 set_bit(STATUS_CONF_PENDING, &priv->status);
b481de9c 3872 mutex_unlock(&priv->mutex);
a0646470 3873 return 0;
b481de9c
ZY		 3874 }
3875
82a66bbb
TW		 3876 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
3877 ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
b481de9c 3878 if (!is_channel_valid(ch_info)) {
b481de9c 3879 IWL_DEBUG_MAC80211("leave - invalid channel\n");
76bb77e0
ZY		 3880 ret = -EINVAL;
3881 goto out;
b481de9c
ZY		 3882 }
3883
398f9e76
AK		 3884 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
3885 !is_channel_ibss(ch_info)) {
3886 IWL_ERROR("channel %d in band %d not IBSS channel\n",
3887 conf->channel->hw_value, conf->channel->band);
3888 ret = -EINVAL;
3889 goto out;
3890 }
3891
82a66bbb
TW		 3892 spin_lock_irqsave(&priv->lock, flags);
3893
78330fdd 3894 /* if we are switching from ht to 2.4 clear flags
b481de9c
ZY		 3895 * from any ht related info since 2.4 does not
3896 * support ht */
82a66bbb 3897 if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
b481de9c
ZY		 3898#ifdef IEEE80211_CONF_CHANNEL_SWITCH
3899 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
3900#endif
3901 )
3902 priv->staging_rxon.flags = 0;
b481de9c 3903
82a66bbb 3904 iwl_set_rxon_channel(priv, conf->channel->band, channel);
b481de9c 3905
82a66bbb 3906 iwl_set_flags_for_band(priv, conf->channel->band);
b481de9c
ZY		 3907
3908 /* The list of supported rates and rate mask can be different
8318d78a 3909 * for each band; since the band may have changed, reset
b481de9c 3910 * the rate mask to what mac80211 lists */
bb8c093b 3911 iwl4965_set_rate(priv);
b481de9c
ZY		 3912
3913 spin_unlock_irqrestore(&priv->lock, flags);
3914
3915#ifdef IEEE80211_CONF_CHANNEL_SWITCH
3916 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
bb8c093b 3917 iwl4965_hw_channel_switch(priv, conf->channel);
76bb77e0 3918 goto out;
b481de9c
ZY		 3919 }
3920#endif
3921
b481de9c
ZY		 3922 if (!conf->radio_enabled) {
3923 IWL_DEBUG_MAC80211("leave - radio disabled\n");
76bb77e0 3924 goto out;
b481de9c
ZY		 3925 }
3926
fee1247a 3927 if (iwl_is_rfkill(priv)) {
b481de9c 3928 IWL_DEBUG_MAC80211("leave - RF kill\n");
76bb77e0
ZY		 3929 ret = -EIO;
3930 goto out;
b481de9c
ZY		 3931 }
3932
630fe9b6
TW		 3933 IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
3934 priv->tx_power_user_lmt, conf->power_level);
3935
3936 iwl_set_tx_power(priv, conf->power_level, false);
3937
bb8c093b 3938 iwl4965_set_rate(priv);
b481de9c
ZY		 3939
3940 if (memcmp(&priv->active_rxon,
3941 &priv->staging_rxon, sizeof(priv->staging_rxon)))
bb8c093b 3942 iwl4965_commit_rxon(priv);
b481de9c
ZY		 3943 else
3944 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
3945
3946 IWL_DEBUG_MAC80211("leave\n");
3947
a0646470
ZY		 3948out:
3949 clear_bit(STATUS_CONF_PENDING, &priv->status);
5a66926a 3950 mutex_unlock(&priv->mutex);
76bb77e0 3951 return ret;
b481de9c
ZY		 3952}
3953
c79dd5b5 3954static void iwl4965_config_ap(struct iwl_priv *priv)
b481de9c 3955{
857485c0 3956 int ret = 0;
b481de9c 3957
d986bcd1 3958 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
b481de9c
ZY		 3959 return;
3960
3961 /* The following should be done only at AP bring up */
3962 if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
3963
3964 /* RXON - unassoc (to set timing command) */
3965 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
bb8c093b 3966 iwl4965_commit_rxon(priv);
b481de9c
ZY		 3967
3968 /* RXON Timing */
bb8c093b
CH		 3969 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
3970 iwl4965_setup_rxon_timing(priv);
857485c0 3971 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
b481de9c 3972 sizeof(priv->rxon_timing), &priv->rxon_timing);
857485c0 3973 if (ret)
b481de9c
ZY		 3974 IWL_WARNING("REPLY_RXON_TIMING failed - "
3975 "Attempting to continue.\n");
3976
c7de35cd 3977 iwl_set_rxon_chain(priv);
b481de9c
ZY		 3978
3979 /* FIXME: what should be the assoc_id for AP? */
3980 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3981 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3982 priv->staging_rxon.flags |=
3983 RXON_FLG_SHORT_PREAMBLE_MSK;
3984 else
3985 priv->staging_rxon.flags &=
3986 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3987
3988 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3989 if (priv->assoc_capability &
3990 WLAN_CAPABILITY_SHORT_SLOT_TIME)
3991 priv->staging_rxon.flags |=
3992 RXON_FLG_SHORT_SLOT_MSK;
3993 else
3994 priv->staging_rxon.flags &=
3995 ~RXON_FLG_SHORT_SLOT_MSK;
3996
3997 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
3998 priv->staging_rxon.flags &=
3999 ~RXON_FLG_SHORT_SLOT_MSK;
4000 }
4001 /* restore RXON assoc */
4002 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
bb8c093b 4003 iwl4965_commit_rxon(priv);
bb8c093b 4004 iwl4965_activate_qos(priv, 1);
4f40e4d9 4005 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
e1493deb 4006 }
bb8c093b 4007 iwl4965_send_beacon_cmd(priv);
b481de9c
ZY		 4008
4009 /* FIXME - we need to add code here to detect a totally new
4010 * configuration, reset the AP, unassoc, rxon timing, assoc,
4011 * clear sta table, add BCAST sta... */
4012}
4013
32bfd35d
JB		 4014static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
4015 struct ieee80211_vif *vif,
b481de9c
ZY		 4016 struct ieee80211_if_conf *conf)
4017{
c79dd5b5 4018 struct iwl_priv *priv = hw->priv;
0795af57 4019 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 4020 unsigned long flags;
4021 int rc;
4022
4023 if (conf == NULL)
4024 return -EIO;
4025
b716bb91
EG		 4026 if (priv->vif != vif) {
4027 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
b716bb91
EG		 4028 return 0;
4029 }
4030
b481de9c
ZY		 4031 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
4032 (!conf->beacon || !conf->ssid_len)) {
4033 IWL_DEBUG_MAC80211
4034 ("Leaving in AP mode because HostAPD is not ready.\n");
4035 return 0;
4036 }
4037
fee1247a 4038 if (!iwl_is_alive(priv))
5a66926a
ZY		 4039 return -EAGAIN;
4040
b481de9c
ZY		 4041 mutex_lock(&priv->mutex);
4042
b481de9c 4043 if (conf->bssid)
0795af57
JP		 4044 IWL_DEBUG_MAC80211("bssid: %s\n",
4045 print_mac(mac, conf->bssid));
b481de9c 4046
4150c572
JB		 4047/*
4048 * very dubious code was here; the probe filtering flag is never set:
4049 *
b481de9c
ZY		 4050 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
4051 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
4150c572 4052 */
b481de9c
ZY		 4053
4054 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
4055 if (!conf->bssid) {
4056 conf->bssid = priv->mac_addr;
4057 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
0795af57
JP		 4058 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
4059 print_mac(mac, conf->bssid));
b481de9c
ZY		 4060 }
4061 if (priv->ibss_beacon)
4062 dev_kfree_skb(priv->ibss_beacon);
4063
4064 priv->ibss_beacon = conf->beacon;
4065 }
4066
fee1247a 4067 if (iwl_is_rfkill(priv))
fde3571f
MA		 4068 goto done;
4069
b481de9c
ZY		 4070 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
4071 !is_multicast_ether_addr(conf->bssid)) {
4072 /* If there is currently a HW scan going on in the background
4073 * then we need to cancel it else the RXON below will fail. */
bb8c093b 4074 if (iwl4965_scan_cancel_timeout(priv, 100)) {
b481de9c
ZY		 4075 IWL_WARNING("Aborted scan still in progress "
4076 "after 100ms\n");
4077 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
4078 mutex_unlock(&priv->mutex);
4079 return -EAGAIN;
4080 }
4081 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
4082
4083 /* TODO: Audit driver for usage of these members and see
4084 * if mac80211 deprecates them (priv->bssid looks like it
4085 * shouldn't be there, but I haven't scanned the IBSS code
4086 * to verify) - jpk */
4087 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
4088
4089 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
bb8c093b 4090 iwl4965_config_ap(priv);
b481de9c 4091 else {
bb8c093b 4092 rc = iwl4965_commit_rxon(priv);
b481de9c 4093 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
4f40e4d9 4094 iwl_rxon_add_station(
b481de9c
ZY		 4095 priv, priv->active_rxon.bssid_addr, 1);
4096 }
4097
4098 } else {
bb8c093b 4099 iwl4965_scan_cancel_timeout(priv, 100);
b481de9c 4100 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
bb8c093b 4101 iwl4965_commit_rxon(priv);
b481de9c
ZY		 4102 }
4103
fde3571f 4104 done:
b481de9c
ZY		 4105 spin_lock_irqsave(&priv->lock, flags);
4106 if (!conf->ssid_len)
4107 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
4108 else
4109 memcpy(priv->essid, conf->ssid, conf->ssid_len);
4110
4111 priv->essid_len = conf->ssid_len;
4112 spin_unlock_irqrestore(&priv->lock, flags);
4113
4114 IWL_DEBUG_MAC80211("leave\n");
4115 mutex_unlock(&priv->mutex);
4116
4117 return 0;
4118}
4119
bb8c093b 4120static void iwl4965_configure_filter(struct ieee80211_hw *hw,
4150c572
JB		 4121 unsigned int changed_flags,
4122 unsigned int *total_flags,
4123 int mc_count, struct dev_addr_list *mc_list)
4124{
4125 /*
4126 * XXX: dummy
bb8c093b 4127 * see also iwl4965_connection_init_rx_config
4150c572 4128 */
4419e39b
AK		 4129 struct iwl_priv *priv = hw->priv;
4130 int new_flags = 0;
4131 if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
4132 if (*total_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
4133 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
4134 IEEE80211_IF_TYPE_MNTR,
4135 changed_flags, *total_flags);
4136 /* queue work 'cuz mac80211 is holding a lock which
4137 * prevents us from issuing (synchronous) f/w cmds */
4138 queue_work(priv->workqueue, &priv->set_monitor);
4139 new_flags &= FIF_PROMISC_IN_BSS |
4140 FIF_OTHER_BSS |
4141 FIF_ALLMULTI;
4142 }
4143 }
4144 *total_flags = new_flags;
4150c572
JB		 4145}
4146
bb8c093b 4147static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
b481de9c
ZY		 4148 struct ieee80211_if_init_conf *conf)
4149{
c79dd5b5 4150 struct iwl_priv *priv = hw->priv;
b481de9c
ZY		 4151
4152 IWL_DEBUG_MAC80211("enter\n");
4153
4154 mutex_lock(&priv->mutex);
948c171c 4155
fee1247a 4156 if (iwl_is_ready_rf(priv)) {
fde3571f
MA		 4157 iwl4965_scan_cancel_timeout(priv, 100);
4158 cancel_delayed_work(&priv->post_associate);
4159 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4160 iwl4965_commit_rxon(priv);
4161 }
32bfd35d
JB		 4162 if (priv->vif == conf->vif) {
4163 priv->vif = NULL;
b481de9c
ZY		 4164 memset(priv->bssid, 0, ETH_ALEN);
4165 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
4166 priv->essid_len = 0;
4167 }
4168 mutex_unlock(&priv->mutex);
4169
4170 IWL_DEBUG_MAC80211("leave\n");
4171
4172}
471b3efd 4173
3109ece1 4174#define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
471b3efd
JB		 4175static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
4176 struct ieee80211_vif *vif,
4177 struct ieee80211_bss_conf *bss_conf,
4178 u32 changes)
220173b0 4179{
c79dd5b5 4180 struct iwl_priv *priv = hw->priv;
220173b0 4181
3109ece1
TW		 4182 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
4183
471b3efd 4184 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3109ece1
TW		 4185 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
4186 bss_conf->use_short_preamble);
471b3efd 4187 if (bss_conf->use_short_preamble)
220173b0
TW		 4188 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
4189 else
4190 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
4191 }
4192
471b3efd 4193 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3109ece1 4194 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
8318d78a 4195 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
220173b0
TW		 4196 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
4197 else
4198 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
4199 }
4200
98952d5d 4201 if (changes & BSS_CHANGED_HT) {
3109ece1 4202 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
98952d5d 4203 iwl4965_ht_conf(priv, bss_conf);
c7de35cd 4204 iwl_set_rxon_chain(priv);
98952d5d
TW		 4205 }
4206
471b3efd 4207 if (changes & BSS_CHANGED_ASSOC) {
3109ece1 4208 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
508e32e1
RC		 4209 /* This should never happen as this function should
4210 * never be called from interrupt context. */
4211 if (WARN_ON_ONCE(in_interrupt()))
4212 return;
3109ece1
TW		 4213 if (bss_conf->assoc) {
4214 priv->assoc_id = bss_conf->aid;
4215 priv->beacon_int = bss_conf->beacon_int;
4216 priv->timestamp = bss_conf->timestamp;
4217 priv->assoc_capability = bss_conf->assoc_capability;
4218 priv->next_scan_jiffies = jiffies +
4219 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
508e32e1
RC		 4220 mutex_lock(&priv->mutex);
4221 iwl4965_post_associate(priv);
4222 mutex_unlock(&priv->mutex);
3109ece1
TW		 4223 } else {
4224 priv->assoc_id = 0;
4225 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
4226 }
4227 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
4228 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
7e8c519e 4229 iwl_send_rxon_assoc(priv);
471b3efd
JB		 4230 }
4231
220173b0 4232}
b481de9c 4233
bb8c093b 4234static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
b481de9c
ZY		 4235{
4236 int rc = 0;
4237 unsigned long flags;
c79dd5b5 4238 struct iwl_priv *priv = hw->priv;
b481de9c
ZY		 4239
4240 IWL_DEBUG_MAC80211("enter\n");
4241
052c4b9f 4242 mutex_lock(&priv->mutex);
b481de9c
ZY		 4243 spin_lock_irqsave(&priv->lock, flags);
4244
fee1247a 4245 if (!iwl_is_ready_rf(priv)) {
b481de9c
ZY		 4246 rc = -EIO;
4247 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
4248 goto out_unlock;
4249 }
4250
4251 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
4252 rc = -EIO;
4253 IWL_ERROR("ERROR: APs don't scan\n");
4254 goto out_unlock;
4255 }
4256
7878a5a4
MA		 4257 /* we don't schedule scan within next_scan_jiffies period */
4258 if (priv->next_scan_jiffies &&
4259 time_after(priv->next_scan_jiffies, jiffies)) {
4260 rc = -EAGAIN;
4261 goto out_unlock;
4262 }
b481de9c 4263 /* if we just finished scan ask for delay */
7878a5a4
MA		 4264 if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
4265 IWL_DELAY_NEXT_SCAN, jiffies)) {
b481de9c
ZY		 4266 rc = -EAGAIN;
4267 goto out_unlock;
4268 }
4269 if (len) {
7878a5a4 4270 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
bb8c093b 4271 iwl4965_escape_essid(ssid, len), (int)len);
b481de9c
ZY		 4272
4273 priv->one_direct_scan = 1;
4274 priv->direct_ssid_len = (u8)
4275 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
4276 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
948c171c
MA		 4277 } else
4278 priv->one_direct_scan = 0;
b481de9c 4279
bb8c093b 4280 rc = iwl4965_scan_initiate(priv);
b481de9c
ZY		 4281
4282 IWL_DEBUG_MAC80211("leave\n");
4283
4284out_unlock:
4285 spin_unlock_irqrestore(&priv->lock, flags);
052c4b9f 4286 mutex_unlock(&priv->mutex);
b481de9c
ZY		 4287
4288 return rc;
4289}
4290
ab885f8c
EG		 4291static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
4292 struct ieee80211_key_conf *keyconf, const u8 *addr,
4293 u32 iv32, u16 *phase1key)
4294{
4295 struct iwl_priv *priv = hw->priv;
4296 u8 sta_id = IWL_INVALID_STATION;
4297 unsigned long flags;
4298 __le16 key_flags = 0;
4299 int i;
4300 DECLARE_MAC_BUF(mac);
4301
4302 IWL_DEBUG_MAC80211("enter\n");
4303
947b13a7 4304 sta_id = iwl_find_station(priv, addr);
ab885f8c
EG		 4305 if (sta_id == IWL_INVALID_STATION) {
4306 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
4307 print_mac(mac, addr));
4308 return;
4309 }
4310
4311 iwl4965_scan_cancel_timeout(priv, 100);
4312
4313 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
4314 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
4315 key_flags &= ~STA_KEY_FLG_INVALID;
4316
5425e490 4317 if (sta_id == priv->hw_params.bcast_sta_id)
ab885f8c
EG		 4318 key_flags |= STA_KEY_MULTICAST_MSK;
4319
4320 spin_lock_irqsave(&priv->sta_lock, flags);
4321
ab885f8c
EG		 4322 priv->stations[sta_id].sta.key.key_flags = key_flags;
4323 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
4324
4325 for (i = 0; i < 5; i++)
4326 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
4327 cpu_to_le16(phase1key[i]);
4328
4329 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
4330 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
4331
133636de 4332 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
ab885f8c
EG		 4333
4334 spin_unlock_irqrestore(&priv->sta_lock, flags);
4335
4336 IWL_DEBUG_MAC80211("leave\n");
4337}
4338
bb8c093b 4339static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
b481de9c
ZY		 4340 const u8 *local_addr, const u8 *addr,
4341 struct ieee80211_key_conf *key)
4342{
c79dd5b5 4343 struct iwl_priv *priv = hw->priv;
0795af57 4344 DECLARE_MAC_BUF(mac);
deb09c43
EG		 4345 int ret = 0;
4346 u8 sta_id = IWL_INVALID_STATION;
6974e363 4347 u8 is_default_wep_key = 0;
b481de9c
ZY		 4348
4349 IWL_DEBUG_MAC80211("enter\n");
4350
099b40b7 4351 if (priv->hw_params.sw_crypto) {
b481de9c
ZY		 4352 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
4353 return -EOPNOTSUPP;
4354 }
4355
4356 if (is_zero_ether_addr(addr))
4357 /* only support pairwise keys */
4358 return -EOPNOTSUPP;
4359
947b13a7 4360 sta_id = iwl_find_station(priv, addr);
6974e363
EG		 4361 if (sta_id == IWL_INVALID_STATION) {
4362 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
4363 print_mac(mac, addr));
4364 return -EINVAL;
b481de9c 4365
deb09c43 4366 }
b481de9c 4367
6974e363 4368 mutex_lock(&priv->mutex);
bb8c093b 4369 iwl4965_scan_cancel_timeout(priv, 100);
6974e363
EG		 4370 mutex_unlock(&priv->mutex);
4371
4372 /* If we are getting WEP group key and we didn't receive any key mapping
4373 * so far, we are in legacy wep mode (group key only), otherwise we are
4374 * in 1X mode.
4375 * In legacy wep mode, we use another host command to the uCode */
5425e490 4376 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
6974e363
EG		 4377 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
4378 if (cmd == SET_KEY)
4379 is_default_wep_key = !priv->key_mapping_key;
4380 else
ccc038ab
EG		 4381 is_default_wep_key =
4382 (key->hw_key_idx == HW_KEY_DEFAULT);
6974e363 4383 }
052c4b9f 4384
b481de9c 4385 switch (cmd) {
deb09c43 4386 case SET_KEY:
6974e363
EG		 4387 if (is_default_wep_key)
4388 ret = iwl_set_default_wep_key(priv, key);
deb09c43 4389 else
7480513f 4390 ret = iwl_set_dynamic_key(priv, key, sta_id);
deb09c43
EG		 4391
4392 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
b481de9c
ZY		 4393 break;
4394 case DISABLE_KEY:
6974e363
EG		 4395 if (is_default_wep_key)
4396 ret = iwl_remove_default_wep_key(priv, key);
deb09c43 4397 else
3ec47732 4398 ret = iwl_remove_dynamic_key(priv, key, sta_id);
deb09c43
EG		 4399
4400 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
b481de9c
ZY		 4401 break;
4402 default:
deb09c43 4403 ret = -EINVAL;
b481de9c
ZY		 4404 }
4405
4406 IWL_DEBUG_MAC80211("leave\n");
b481de9c 4407
deb09c43 4408 return ret;
b481de9c
ZY		 4409}
4410
e100bb64 4411static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
b481de9c
ZY		 4412 const struct ieee80211_tx_queue_params *params)
4413{
c79dd5b5 4414 struct iwl_priv *priv = hw->priv;
b481de9c
ZY		 4415 unsigned long flags;
4416 int q;
b481de9c
ZY		 4417
4418 IWL_DEBUG_MAC80211("enter\n");
4419
fee1247a 4420 if (!iwl_is_ready_rf(priv)) {
b481de9c
ZY		 4421 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4422 return -EIO;
4423 }
4424
4425 if (queue >= AC_NUM) {
4426 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
4427 return 0;
4428 }
4429
b481de9c
ZY		 4430 if (!priv->qos_data.qos_enable) {
4431 priv->qos_data.qos_active = 0;
4432 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
4433 return 0;
4434 }
4435 q = AC_NUM - 1 - queue;
4436
4437 spin_lock_irqsave(&priv->lock, flags);
4438
4439 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
4440 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
4441 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
4442 priv->qos_data.def_qos_parm.ac[q].edca_txop =
3330d7be 4443 cpu_to_le16((params->txop * 32));
b481de9c
ZY		 4444
4445 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
4446 priv->qos_data.qos_active = 1;
4447
4448 spin_unlock_irqrestore(&priv->lock, flags);
4449
4450 mutex_lock(&priv->mutex);
4451 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
bb8c093b 4452 iwl4965_activate_qos(priv, 1);
3109ece1 4453 else if (priv->assoc_id && iwl_is_associated(priv))
bb8c093b 4454 iwl4965_activate_qos(priv, 0);
b481de9c
ZY		 4455
4456 mutex_unlock(&priv->mutex);
4457
b481de9c
ZY		 4458 IWL_DEBUG_MAC80211("leave\n");
4459 return 0;
4460}
4461
bb8c093b 4462static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
b481de9c
ZY		 4463 struct ieee80211_tx_queue_stats *stats)
4464{
c79dd5b5 4465 struct iwl_priv *priv = hw->priv;
b481de9c 4466 int i, avail;
16466903 4467 struct iwl_tx_queue *txq;
443cfd45 4468 struct iwl_queue *q;
b481de9c
ZY		 4469 unsigned long flags;
4470
4471 IWL_DEBUG_MAC80211("enter\n");
4472
fee1247a 4473 if (!iwl_is_ready_rf(priv)) {
b481de9c
ZY		 4474 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4475 return -EIO;
4476 }
4477
4478 spin_lock_irqsave(&priv->lock, flags);
4479
4480 for (i = 0; i < AC_NUM; i++) {
4481 txq = &priv->txq[i];
4482 q = &txq->q;
443cfd45 4483 avail = iwl_queue_space(q);
b481de9c 4484
57ffc589
JB		 4485 stats[i].len = q->n_window - avail;
4486 stats[i].limit = q->n_window - q->high_mark;
4487 stats[i].count = q->n_window;
b481de9c
ZY		 4488
4489 }
4490 spin_unlock_irqrestore(&priv->lock, flags);
4491
4492 IWL_DEBUG_MAC80211("leave\n");
4493
4494 return 0;
4495}
4496
bb8c093b 4497static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
b481de9c
ZY		 4498 struct ieee80211_low_level_stats *stats)
4499{
bf403db8
EK		 4500 struct iwl_priv *priv = hw->priv;
4501
4502 priv = hw->priv;
b481de9c
ZY		 4503 IWL_DEBUG_MAC80211("enter\n");
4504 IWL_DEBUG_MAC80211("leave\n");
4505
4506 return 0;
4507}
4508
bb8c093b 4509static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
b481de9c 4510{
bf403db8
EK		 4511 struct iwl_priv *priv;
4512
4513 priv = hw->priv;
b481de9c
ZY		 4514 IWL_DEBUG_MAC80211("enter\n");
4515 IWL_DEBUG_MAC80211("leave\n");
4516
4517 return 0;
4518}
4519
bb8c093b 4520static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
b481de9c 4521{
c79dd5b5 4522 struct iwl_priv *priv = hw->priv;
b481de9c
ZY		 4523 unsigned long flags;
4524
4525 mutex_lock(&priv->mutex);
4526 IWL_DEBUG_MAC80211("enter\n");
4527
4528 priv->lq_mngr.lq_ready = 0;
b481de9c 4529 spin_lock_irqsave(&priv->lock, flags);
fd105e79 4530 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
b481de9c 4531 spin_unlock_irqrestore(&priv->lock, flags);
b481de9c 4532
c7de35cd 4533 iwl_reset_qos(priv);
b481de9c
ZY		 4534
4535 cancel_delayed_work(&priv->post_associate);
4536
4537 spin_lock_irqsave(&priv->lock, flags);
4538 priv->assoc_id = 0;
4539 priv->assoc_capability = 0;
b481de9c
ZY		 4540 priv->assoc_station_added = 0;
4541
4542 /* new association get rid of ibss beacon skb */
4543 if (priv->ibss_beacon)
4544 dev_kfree_skb(priv->ibss_beacon);
4545
4546 priv->ibss_beacon = NULL;
4547
4548 priv->beacon_int = priv->hw->conf.beacon_int;
3109ece1 4549 priv->timestamp = 0;
b481de9c
ZY		 4550 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
4551 priv->beacon_int = 0;
4552
4553 spin_unlock_irqrestore(&priv->lock, flags);
4554
fee1247a 4555 if (!iwl_is_ready_rf(priv)) {
fde3571f
MA		 4556 IWL_DEBUG_MAC80211("leave - not ready\n");
4557 mutex_unlock(&priv->mutex);
4558 return;
4559 }
4560
052c4b9f 4561 /* we are restarting association process
4562 * clear RXON_FILTER_ASSOC_MSK bit
4563 */
4564 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
bb8c093b 4565 iwl4965_scan_cancel_timeout(priv, 100);
052c4b9f 4566 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
bb8c093b 4567 iwl4965_commit_rxon(priv);
052c4b9f 4568 }
4569
5da4b55f
MA		 4570 iwl_power_update_mode(priv, 0);
4571
b481de9c
ZY		 4572 /* Per mac80211.h: This is only used in IBSS mode... */
4573 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
052c4b9f 4574
b481de9c
ZY		 4575 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
4576 mutex_unlock(&priv->mutex);
4577 return;
4578 }
4579
bb8c093b 4580 iwl4965_set_rate(priv);
b481de9c
ZY		 4581
4582 mutex_unlock(&priv->mutex);
4583
4584 IWL_DEBUG_MAC80211("leave\n");
b481de9c
ZY		 4585}
4586
e039fa4a 4587static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
b481de9c 4588{
c79dd5b5 4589 struct iwl_priv *priv = hw->priv;
b481de9c
ZY		 4590 unsigned long flags;
4591
4592 mutex_lock(&priv->mutex);
4593 IWL_DEBUG_MAC80211("enter\n");
4594
fee1247a 4595 if (!iwl_is_ready_rf(priv)) {
b481de9c
ZY		 4596 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4597 mutex_unlock(&priv->mutex);
4598 return -EIO;
4599 }
4600
4601 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
4602 IWL_DEBUG_MAC80211("leave - not IBSS\n");
4603 mutex_unlock(&priv->mutex);
4604 return -EIO;
4605 }
4606
4607 spin_lock_irqsave(&priv->lock, flags);
4608
4609 if (priv->ibss_beacon)
4610 dev_kfree_skb(priv->ibss_beacon);
4611
4612 priv->ibss_beacon = skb;
4613
4614 priv->assoc_id = 0;
4615
4616 IWL_DEBUG_MAC80211("leave\n");
4617 spin_unlock_irqrestore(&priv->lock, flags);
4618
c7de35cd 4619 iwl_reset_qos(priv);
b481de9c 4620
c46fbefa 4621 iwl4965_post_associate(priv);
b481de9c
ZY		 4622
4623 mutex_unlock(&priv->mutex);
4624
4625 return 0;
4626}
4627
b481de9c
ZY		 4628/*****************************************************************************
4629 *
4630 * sysfs attributes
4631 *
4632 *****************************************************************************/
4633
0a6857e7 4634#ifdef CONFIG_IWLWIFI_DEBUG
b481de9c
ZY		 4635
4636/*
4637 * The following adds a new attribute to the sysfs representation
4638 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
4639 * used for controlling the debug level.
4640 *
4641 * See the level definitions in iwl for details.
4642 */
4643
8cf769c6
EK		 4644static ssize_t show_debug_level(struct device *d,
4645 struct device_attribute *attr, char *buf)
b481de9c 4646{
8cf769c6
EK		 4647 struct iwl_priv *priv = d->driver_data;
4648
4649 return sprintf(buf, "0x%08X\n", priv->debug_level);
b481de9c 4650}
8cf769c6
EK		 4651static ssize_t store_debug_level(struct device *d,
4652 struct device_attribute *attr,
b481de9c
ZY		 4653 const char *buf, size_t count)
4654{
8cf769c6 4655 struct iwl_priv *priv = d->driver_data;
b481de9c
ZY		 4656 char *p = (char *)buf;
4657 u32 val;
4658
4659 val = simple_strtoul(p, &p, 0);
4660 if (p == buf)
4661 printk(KERN_INFO DRV_NAME
4662 ": %s is not in hex or decimal form.\n", buf);
4663 else
8cf769c6 4664 priv->debug_level = val;
b481de9c
ZY		 4665
4666 return strnlen(buf, count);
4667}
4668
8cf769c6
EK		 4669static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
4670 show_debug_level, store_debug_level);
4671
b481de9c 4672
0a6857e7 4673#endif /* CONFIG_IWLWIFI_DEBUG */
b481de9c 4674
b481de9c 4675
bc6f59bc
TW		 4676static ssize_t show_version(struct device *d,
4677 struct device_attribute *attr, char *buf)
4678{
4679 struct iwl_priv *priv = d->driver_data;
885ba202 4680 struct iwl_alive_resp *palive = &priv->card_alive;
bc6f59bc
TW		 4681
4682 if (palive->is_valid)
4683 return sprintf(buf, "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
4684 "fw type: 0x%01X 0x%01X\n",
4685 palive->ucode_major, palive->ucode_minor,
4686 palive->sw_rev[0], palive->sw_rev[1],
4687 palive->ver_type, palive->ver_subtype);
4688
4689 else
4690 return sprintf(buf, "fw not loaded\n");
4691}
4692
4693static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
4694
b481de9c
ZY		 4695static ssize_t show_temperature(struct device *d,
4696 struct device_attribute *attr, char *buf)
4697{
c79dd5b5 4698 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
b481de9c 4699
fee1247a 4700 if (!iwl_is_alive(priv))
b481de9c
ZY		 4701 return -EAGAIN;
4702
bb8c093b 4703 return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
b481de9c
ZY		 4704}
4705
4706static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
4707
4708static ssize_t show_rs_window(struct device *d,
4709 struct device_attribute *attr,
4710 char *buf)
4711{
c79dd5b5 4712 struct iwl_priv *priv = d->driver_data;
bb8c093b 4713 return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
b481de9c
ZY		 4714}
4715static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
4716
4717static ssize_t show_tx_power(struct device *d,
4718 struct device_attribute *attr, char *buf)
4719{
c79dd5b5 4720 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
630fe9b6 4721 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
b481de9c
ZY		 4722}
4723
4724static ssize_t store_tx_power(struct device *d,
4725 struct device_attribute *attr,
4726 const char *buf, size_t count)
4727{
c79dd5b5 4728 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
b481de9c
ZY		 4729 char *p = (char *)buf;
4730 u32 val;
4731
4732 val = simple_strtoul(p, &p, 10);
4733 if (p == buf)
4734 printk(KERN_INFO DRV_NAME
4735 ": %s is not in decimal form.\n", buf);
4736 else
630fe9b6 4737 iwl_set_tx_power(priv, val, false);
b481de9c
ZY		 4738
4739 return count;
4740}
4741
4742static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
4743
4744static ssize_t show_flags(struct device *d,
4745 struct device_attribute *attr, char *buf)
4746{
c79dd5b5 4747 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
b481de9c
ZY		 4748
4749 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
4750}
4751
4752static ssize_t store_flags(struct device *d,
4753 struct device_attribute *attr,
4754 const char *buf, size_t count)
4755{
c79dd5b5 4756 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
b481de9c
ZY		 4757 u32 flags = simple_strtoul(buf, NULL, 0);
4758
4759 mutex_lock(&priv->mutex);
4760 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
4761 /* Cancel any currently running scans... */
bb8c093b 4762 if (iwl4965_scan_cancel_timeout(priv, 100))
b481de9c
ZY		 4763 IWL_WARNING("Could not cancel scan.\n");
4764 else {
4765 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
4766 flags);
4767 priv->staging_rxon.flags = cpu_to_le32(flags);
bb8c093b 4768 iwl4965_commit_rxon(priv);
b481de9c
ZY		 4769 }
4770 }
4771 mutex_unlock(&priv->mutex);
4772
4773 return count;
4774}
4775
4776static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
4777
4778static ssize_t show_filter_flags(struct device *d,
4779 struct device_attribute *attr, char *buf)
4780{
c79dd5b5 4781 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
b481de9c
ZY		 4782
4783 return sprintf(buf, "0x%04X\n",
4784 le32_to_cpu(priv->active_rxon.filter_flags));
4785}
4786
4787static ssize_t store_filter_flags(struct device *d,
4788 struct device_attribute *attr,
4789 const char *buf, size_t count)
4790{
c79dd5b5 4791 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
b481de9c
ZY		 4792 u32 filter_flags = simple_strtoul(buf, NULL, 0);
4793
4794 mutex_lock(&priv->mutex);
4795 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
4796 /* Cancel any currently running scans... */
bb8c093b 4797 if (iwl4965_scan_cancel_timeout(priv, 100))
b481de9c
ZY		 4798 IWL_WARNING("Could not cancel scan.\n");
4799 else {
4800 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
4801 "0x%04X\n", filter_flags);
4802 priv->staging_rxon.filter_flags =
4803 cpu_to_le32(filter_flags);
bb8c093b 4804 iwl4965_commit_rxon(priv);
b481de9c
ZY		 4805 }
4806 }
4807 mutex_unlock(&priv->mutex);
4808
4809 return count;
4810}
4811
4812static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
4813 store_filter_flags);
4814
c8b0e6e1 4815#ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
b481de9c
ZY		 4816
4817static ssize_t show_measurement(struct device *d,
4818 struct device_attribute *attr, char *buf)
4819{
c79dd5b5 4820 struct iwl_priv *priv = dev_get_drvdata(d);
bb8c093b 4821 struct iwl4965_spectrum_notification measure_report;
b481de9c
ZY		 4822 u32 size = sizeof(measure_report), len = 0, ofs = 0;
4823 u8 *data = (u8 *) & measure_report;
4824 unsigned long flags;
4825
4826 spin_lock_irqsave(&priv->lock, flags);
4827 if (!(priv->measurement_status & MEASUREMENT_READY)) {
4828 spin_unlock_irqrestore(&priv->lock, flags);
4829 return 0;
4830 }
4831 memcpy(&measure_report, &priv->measure_report, size);
4832 priv->measurement_status = 0;
4833 spin_unlock_irqrestore(&priv->lock, flags);
4834
4835 while (size && (PAGE_SIZE - len)) {
4836 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4837 PAGE_SIZE - len, 1);
4838 len = strlen(buf);
4839 if (PAGE_SIZE - len)
4840 buf[len++] = '\n';
4841
4842 ofs += 16;
4843 size -= min(size, 16U);
4844 }
4845
4846 return len;
4847}
4848
4849static ssize_t store_measurement(struct device *d,
4850 struct device_attribute *attr,
4851 const char *buf, size_t count)
4852{
c79dd5b5 4853 struct iwl_priv *priv = dev_get_drvdata(d);
b481de9c
ZY		 4854 struct ieee80211_measurement_params params = {
4855 .channel = le16_to_cpu(priv->active_rxon.channel),
4856 .start_time = cpu_to_le64(priv->last_tsf),
4857 .duration = cpu_to_le16(1),
4858 };
4859 u8 type = IWL_MEASURE_BASIC;
4860 u8 buffer[32];
4861 u8 channel;
4862
4863 if (count) {
4864 char *p = buffer;
4865 strncpy(buffer, buf, min(sizeof(buffer), count));
4866 channel = simple_strtoul(p, NULL, 0);
4867 if (channel)
4868 params.channel = channel;
4869
4870 p = buffer;
4871 while (*p && *p != ' ')
4872 p++;
4873 if (*p)
4874 type = simple_strtoul(p + 1, NULL, 0);
4875 }
4876
4877 IWL_DEBUG_INFO("Invoking measurement of type %d on "
4878 "channel %d (for '%s')\n", type, params.channel, buf);
bb8c093b 4879 iwl4965_get_measurement(priv, &params, type);
b481de9c
ZY		 4880
4881 return count;
4882}
4883
4884static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
4885 show_measurement, store_measurement);
c8b0e6e1 4886#endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
b481de9c
ZY		 4887
4888static ssize_t store_retry_rate(struct device *d,
4889 struct device_attribute *attr,
4890 const char *buf, size_t count)
4891{
c79dd5b5 4892 struct iwl_priv *priv = dev_get_drvdata(d);
b481de9c
ZY		 4893
4894 priv->retry_rate = simple_strtoul(buf, NULL, 0);
4895 if (priv->retry_rate <= 0)
4896 priv->retry_rate = 1;
4897
4898 return count;
4899}
4900
4901static ssize_t show_retry_rate(struct device *d,
4902 struct device_attribute *attr, char *buf)
4903{
c79dd5b5 4904 struct iwl_priv *priv = dev_get_drvdata(d);
b481de9c
ZY		 4905 return sprintf(buf, "%d", priv->retry_rate);
4906}
4907
4908static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
4909 store_retry_rate);
4910
4911static ssize_t store_power_level(struct device *d,
4912 struct device_attribute *attr,
4913 const char *buf, size_t count)
4914{
c79dd5b5 4915 struct iwl_priv *priv = dev_get_drvdata(d);
b481de9c
ZY		 4916 int rc;
4917 int mode;
4918
4919 mode = simple_strtoul(buf, NULL, 0);
4920 mutex_lock(&priv->mutex);
4921
fee1247a 4922 if (!iwl_is_ready(priv)) {
b481de9c
ZY		 4923 rc = -EAGAIN;
4924 goto out;
4925 }
4926
5da4b55f
MA		 4927 rc = iwl_power_set_user_mode(priv, mode);
4928 if (rc) {
4929 IWL_DEBUG_MAC80211("failed setting power mode.\n");
4930 goto out;
b481de9c 4931 }
b481de9c
ZY		 4932 rc = count;
4933
4934 out:
4935 mutex_unlock(&priv->mutex);
4936 return rc;
4937}
4938
4939#define MAX_WX_STRING 80
4940
4941/* Values are in microsecond */
4942static const s32 timeout_duration[] = {
4943 350000,
4944 250000,
4945 75000,
4946 37000,
4947 25000,
4948};
4949static const s32 period_duration[] = {
4950 400000,
4951 700000,
4952 1000000,
4953 1000000,
4954 1000000
4955};
4956
4957static ssize_t show_power_level(struct device *d,
4958 struct device_attribute *attr, char *buf)
4959{
c79dd5b5 4960 struct iwl_priv *priv = dev_get_drvdata(d);
5da4b55f 4961 int level = priv->power_data.power_mode;
b481de9c
ZY		 4962 char *p = buf;
4963
4964 p += sprintf(p, "%d ", level);
4965 switch (level) {
4966 case IWL_POWER_MODE_CAM:
4967 case IWL_POWER_AC:
4968 p += sprintf(p, "(AC)");
4969 break;
4970 case IWL_POWER_BATTERY:
4971 p += sprintf(p, "(BATTERY)");
4972 break;
4973 default:
4974 p += sprintf(p,
4975 "(Timeout %dms, Period %dms)",
4976 timeout_duration[level - 1] / 1000,
4977 period_duration[level - 1] / 1000);
4978 }
5da4b55f 4979/*
b481de9c
ZY		 4980 if (!(priv->power_mode & IWL_POWER_ENABLED))
4981 p += sprintf(p, " OFF\n");
4982 else
4983 p += sprintf(p, " \n");
5da4b55f
MA		 4984*/
4985 p += sprintf(p, " \n");
b481de9c 4986 return (p - buf + 1);
b481de9c
ZY		 4987}
4988
4989static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
4990 store_power_level);
4991
4992static ssize_t show_channels(struct device *d,
4993 struct device_attribute *attr, char *buf)
4994{
8318d78a
JB		 4995 /* all this shit doesn't belong into sysfs anyway */
4996 return 0;
b481de9c
ZY		 4997}
4998
4999static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
5000
5001static ssize_t show_statistics(struct device *d,
5002 struct device_attribute *attr, char *buf)
5003{
c79dd5b5 5004 struct iwl_priv *priv = dev_get_drvdata(d);
bb8c093b 5005 u32 size = sizeof(struct iwl4965_notif_statistics);
b481de9c
ZY		 5006 u32 len = 0, ofs = 0;
5007 u8 *data = (u8 *) & priv->statistics;
5008 int rc = 0;
5009
fee1247a 5010 if (!iwl_is_alive(priv))
b481de9c
ZY		 5011 return -EAGAIN;
5012
5013 mutex_lock(&priv->mutex);
49ea8596 5014 rc = iwl_send_statistics_request(priv, 0);
b481de9c
ZY		 5015 mutex_unlock(&priv->mutex);
5016
5017 if (rc) {
5018 len = sprintf(buf,
5019 "Error sending statistics request: 0x%08X\n", rc);
5020 return len;
5021 }
5022
5023 while (size && (PAGE_SIZE - len)) {
5024 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
5025 PAGE_SIZE - len, 1);
5026 len = strlen(buf);
5027 if (PAGE_SIZE - len)
5028 buf[len++] = '\n';
5029
5030 ofs += 16;
5031 size -= min(size, 16U);
5032 }
5033
5034 return len;
5035}
5036
5037static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
5038
b481de9c
ZY		 5039static ssize_t show_status(struct device *d,
5040 struct device_attribute *attr, char *buf)
5041{
c79dd5b5 5042 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
fee1247a 5043 if (!iwl_is_alive(priv))
b481de9c
ZY		 5044 return -EAGAIN;
5045 return sprintf(buf, "0x%08x\n", (int)priv->status);
5046}
5047
5048static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
5049
b481de9c
ZY		 5050/*****************************************************************************
5051 *
5052 * driver setup and teardown
5053 *
5054 *****************************************************************************/
5055
4e39317d 5056static void iwl_setup_deferred_work(struct iwl_priv *priv)
b481de9c
ZY		 5057{
5058 priv->workqueue = create_workqueue(DRV_NAME);
5059
5060 init_waitqueue_head(&priv->wait_command_queue);
5061
bb8c093b
CH		 5062 INIT_WORK(&priv->up, iwl4965_bg_up);
5063 INIT_WORK(&priv->restart, iwl4965_bg_restart);
5064 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
5065 INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
5066 INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
5067 INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
5068 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
5069 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4419e39b 5070 INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
16e727e8 5071 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
bb8c093b 5072 INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
4a4a9e81
TW		 5073 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
5074 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
bb8c093b
CH		 5075 INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
5076
4e39317d
EG		 5077 if (priv->cfg->ops->lib->setup_deferred_work)
5078 priv->cfg->ops->lib->setup_deferred_work(priv);
5079
5080 init_timer(&priv->statistics_periodic);
5081 priv->statistics_periodic.data = (unsigned long)priv;
5082 priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
b481de9c
ZY		 5083
5084 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
bb8c093b 5085 iwl4965_irq_tasklet, (unsigned long)priv);
b481de9c
ZY		 5086}
5087
4e39317d 5088static void iwl_cancel_deferred_work(struct iwl_priv *priv)
b481de9c 5089{
4e39317d
EG		 5090 if (priv->cfg->ops->lib->cancel_deferred_work)
5091 priv->cfg->ops->lib->cancel_deferred_work(priv);
b481de9c 5092
3ae6a054 5093 cancel_delayed_work_sync(&priv->init_alive_start);
b481de9c
ZY		 5094 cancel_delayed_work(&priv->scan_check);
5095 cancel_delayed_work(&priv->alive_start);
5096 cancel_delayed_work(&priv->post_associate);
5097 cancel_work_sync(&priv->beacon_update);
4e39317d 5098 del_timer_sync(&priv->statistics_periodic);
b481de9c
ZY		 5099}
5100
bb8c093b 5101static struct attribute *iwl4965_sysfs_entries[] = {
b481de9c 5102 &dev_attr_channels.attr,
b481de9c
ZY		 5103 &dev_attr_flags.attr,
5104 &dev_attr_filter_flags.attr,
c8b0e6e1 5105#ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
b481de9c
ZY		 5106 &dev_attr_measurement.attr,
5107#endif
5108 &dev_attr_power_level.attr,
5109 &dev_attr_retry_rate.attr,
b481de9c
ZY		 5110 &dev_attr_rs_window.attr,
5111 &dev_attr_statistics.attr,
5112 &dev_attr_status.attr,
5113 &dev_attr_temperature.attr,
b481de9c 5114 &dev_attr_tx_power.attr,
8cf769c6
EK		 5115#ifdef CONFIG_IWLWIFI_DEBUG
5116 &dev_attr_debug_level.attr,
5117#endif
bc6f59bc 5118 &dev_attr_version.attr,
b481de9c
ZY		 5119
5120 NULL
5121};
5122
bb8c093b 5123static struct attribute_group iwl4965_attribute_group = {
b481de9c 5124 .name = NULL, /* put in device directory */
bb8c093b 5125 .attrs = iwl4965_sysfs_entries,
b481de9c
ZY		 5126};
5127
bb8c093b
CH		 5128static struct ieee80211_ops iwl4965_hw_ops = {
5129 .tx = iwl4965_mac_tx,
5130 .start = iwl4965_mac_start,
5131 .stop = iwl4965_mac_stop,
5132 .add_interface = iwl4965_mac_add_interface,
5133 .remove_interface = iwl4965_mac_remove_interface,
5134 .config = iwl4965_mac_config,
5135 .config_interface = iwl4965_mac_config_interface,
5136 .configure_filter = iwl4965_configure_filter,
5137 .set_key = iwl4965_mac_set_key,
ab885f8c 5138 .update_tkip_key = iwl4965_mac_update_tkip_key,
bb8c093b
CH		 5139 .get_stats = iwl4965_mac_get_stats,
5140 .get_tx_stats = iwl4965_mac_get_tx_stats,
5141 .conf_tx = iwl4965_mac_conf_tx,
5142 .get_tsf = iwl4965_mac_get_tsf,
5143 .reset_tsf = iwl4965_mac_reset_tsf,
5144 .beacon_update = iwl4965_mac_beacon_update,
471b3efd 5145 .bss_info_changed = iwl4965_bss_info_changed,
9ab46173 5146 .ampdu_action = iwl4965_mac_ampdu_action,
bb8c093b 5147 .hw_scan = iwl4965_mac_hw_scan
b481de9c
ZY		 5148};
5149
bb8c093b 5150static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
b481de9c
ZY		 5151{
5152 int err = 0;
c79dd5b5 5153 struct iwl_priv *priv;
b481de9c 5154 struct ieee80211_hw *hw;
82b9a121 5155 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
0359facc 5156 unsigned long flags;
5a66926a 5157 DECLARE_MAC_BUF(mac);
b481de9c 5158
316c30d9
AK		 5159 /************************
5160 * 1. Allocating HW data
5161 ************************/
5162
6440adb5
CB		 5163 /* Disabling hardware scan means that mac80211 will perform scans
5164 * "the hard way", rather than using device's scan. */
1ea87396 5165 if (cfg->mod_params->disable_hw_scan) {
bf403db8
EK		 5166 if (cfg->mod_params->debug & IWL_DL_INFO)
5167 dev_printk(KERN_DEBUG, &(pdev->dev),
5168 "Disabling hw_scan\n");
bb8c093b 5169 iwl4965_hw_ops.hw_scan = NULL;
b481de9c
ZY		 5170 }
5171
1d0a082d
AK		 5172 hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
5173 if (!hw) {
b481de9c
ZY		 5174 err = -ENOMEM;
5175 goto out;
5176 }
1d0a082d
AK		 5177 priv = hw->priv;
5178 /* At this point both hw and priv are allocated. */
5179
b481de9c
ZY		 5180 SET_IEEE80211_DEV(hw, &pdev->dev);
5181
5182 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
82b9a121 5183 priv->cfg = cfg;
b481de9c 5184 priv->pci_dev = pdev;
316c30d9 5185
0a6857e7 5186#ifdef CONFIG_IWLWIFI_DEBUG
bf403db8 5187 priv->debug_level = priv->cfg->mod_params->debug;
b481de9c
ZY		 5188 atomic_set(&priv->restrict_refcnt, 0);
5189#endif
b481de9c 5190
316c30d9
AK		 5191 /**************************
5192 * 2. Initializing PCI bus
5193 **************************/
5194 if (pci_enable_device(pdev)) {
5195 err = -ENODEV;
5196 goto out_ieee80211_free_hw;
5197 }
5198
5199 pci_set_master(pdev);
5200
cc2a8ea8 5201 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
316c30d9 5202 if (!err)
cc2a8ea8
RR		 5203 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
5204 if (err) {
5205 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
5206 if (!err)
5207 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
5208 /* both attempts failed: */
316c30d9 5209 if (err) {
cc2a8ea8
RR		 5210 printk(KERN_WARNING "%s: No suitable DMA available.\n",
5211 DRV_NAME);
316c30d9 5212 goto out_pci_disable_device;
cc2a8ea8 5213 }
316c30d9
AK		 5214 }
5215
5216 err = pci_request_regions(pdev, DRV_NAME);
5217 if (err)
5218 goto out_pci_disable_device;
5219
5220 pci_set_drvdata(pdev, priv);
5221
5222 /* We disable the RETRY_TIMEOUT register (0x41) to keep
5223 * PCI Tx retries from interfering with C3 CPU state */
5224 pci_write_config_byte(pdev, 0x41, 0x00);
5225
5226 /***********************
5227 * 3. Read REV register
5228 ***********************/
5229 priv->hw_base = pci_iomap(pdev, 0, 0);
5230 if (!priv->hw_base) {
5231 err = -ENODEV;
5232 goto out_pci_release_regions;
5233 }
5234
5235 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
5236 (unsigned long long) pci_resource_len(pdev, 0));
5237 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
5238
b661c819 5239 iwl_hw_detect(priv);
316c30d9 5240 printk(KERN_INFO DRV_NAME
b661c819
TW		 5241 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
5242 priv->cfg->name, priv->hw_rev);
316c30d9 5243
91238714
TW		 5244 /* amp init */
5245 err = priv->cfg->ops->lib->apm_ops.init(priv);
316c30d9 5246 if (err < 0) {
91238714 5247 IWL_DEBUG_INFO("Failed to init APMG\n");
316c30d9
AK		 5248 goto out_iounmap;
5249 }
91238714
TW		 5250 /*****************
5251 * 4. Read EEPROM
5252 *****************/
316c30d9
AK		 5253 /* Read the EEPROM */
5254 err = iwl_eeprom_init(priv);
5255 if (err) {
5256 IWL_ERROR("Unable to init EEPROM\n");
5257 goto out_iounmap;
5258 }
8614f360
TW		 5259 err = iwl_eeprom_check_version(priv);
5260 if (err)
5261 goto out_iounmap;
5262
02883017 5263 /* extract MAC Address */
316c30d9
AK		 5264 iwl_eeprom_get_mac(priv, priv->mac_addr);
5265 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
5266 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
5267
5268 /************************
5269 * 5. Setup HW constants
5270 ************************/
5271 /* Device-specific setup */
5425e490
TW		 5272 if (priv->cfg->ops->lib->set_hw_params(priv)) {
5273 IWL_ERROR("failed to set hw parameters\n");
073d3f5f 5274 goto out_free_eeprom;
316c30d9
AK		 5275 }
5276
5277 /*******************
6ba87956 5278 * 6. Setup priv
316c30d9 5279 *******************/
b481de9c 5280
6ba87956 5281 err = iwl_init_drv(priv);
bf85ea4f 5282 if (err)
399f4900 5283 goto out_free_eeprom;
bf85ea4f 5284 /* At this point both hw and priv are initialized. */
316c30d9
AK		 5285
5286 /**********************************
5287 * 7. Initialize module parameters
5288 **********************************/
5289
5290 /* Disable radio (SW RF KILL) via parameter when loading driver */
1ea87396 5291 if (priv->cfg->mod_params->disable) {
316c30d9
AK		 5292 set_bit(STATUS_RF_KILL_SW, &priv->status);
5293 IWL_DEBUG_INFO("Radio disabled.\n");
5294 }
5295
316c30d9
AK		 5296 /********************
5297 * 8. Setup services
5298 ********************/
0359facc 5299 spin_lock_irqsave(&priv->lock, flags);
316c30d9 5300 iwl4965_disable_interrupts(priv);
0359facc 5301 spin_unlock_irqrestore(&priv->lock, flags);
316c30d9
AK		 5302
5303 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5304 if (err) {
5305 IWL_ERROR("failed to create sysfs device attributes\n");
6ba87956 5306 goto out_uninit_drv;
316c30d9
AK		 5307 }
5308
316c30d9 5309
4e39317d 5310 iwl_setup_deferred_work(priv);
316c30d9
AK		 5311 iwl4965_setup_rx_handlers(priv);
5312
5313 /********************
5314 * 9. Conclude
5315 ********************/
5a66926a
ZY		 5316 pci_save_state(pdev);
5317 pci_disable_device(pdev);
b481de9c 5318
6ba87956
TW		 5319 /**********************************
5320 * 10. Setup and register mac80211
5321 **********************************/
5322
5323 err = iwl_setup_mac(priv);
5324 if (err)
5325 goto out_remove_sysfs;
5326
5327 err = iwl_dbgfs_register(priv, DRV_NAME);
5328 if (err)
5329 IWL_ERROR("failed to create debugfs files\n");
5330
c8381fdc
MA		 5331 /* notify iwlcore to init */
5332 iwlcore_low_level_notify(priv, IWLCORE_INIT_EVT);
b481de9c
ZY		 5333 return 0;
5334
316c30d9
AK		 5335 out_remove_sysfs:
5336 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
6ba87956
TW		 5337 out_uninit_drv:
5338 iwl_uninit_drv(priv);
073d3f5f
TW		 5339 out_free_eeprom:
5340 iwl_eeprom_free(priv);
b481de9c
ZY		 5341 out_iounmap:
5342 pci_iounmap(pdev, priv->hw_base);
5343 out_pci_release_regions:
5344 pci_release_regions(pdev);
316c30d9 5345 pci_set_drvdata(pdev, NULL);
b481de9c
ZY		 5346 out_pci_disable_device:
5347 pci_disable_device(pdev);
b481de9c
ZY		 5348 out_ieee80211_free_hw:
5349 ieee80211_free_hw(priv->hw);
5350 out:
5351 return err;
5352}
5353
c83dbf68 5354static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
b481de9c 5355{
c79dd5b5 5356 struct iwl_priv *priv = pci_get_drvdata(pdev);
b481de9c
ZY		 5357 struct list_head *p, *q;
5358 int i;
0359facc 5359 unsigned long flags;
b481de9c
ZY		 5360
5361 if (!priv)
5362 return;
5363
5364 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
5365
67249625
EG		 5366 iwl_dbgfs_unregister(priv);
5367 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5368
c4f55232
RR		 5369 if (priv->mac80211_registered) {
5370 ieee80211_unregister_hw(priv->hw);
5371 priv->mac80211_registered = 0;
5372 }
5373
b481de9c 5374 set_bit(STATUS_EXIT_PENDING, &priv->status);
b24d22b1 5375
bb8c093b 5376 iwl4965_down(priv);
b481de9c 5377
0359facc
MA		 5378 /* make sure we flush any pending irq or
5379 * tasklet for the driver
5380 */
5381 spin_lock_irqsave(&priv->lock, flags);
5382 iwl4965_disable_interrupts(priv);
5383 spin_unlock_irqrestore(&priv->lock, flags);
5384
5385 iwl_synchronize_irq(priv);
5386
b481de9c
ZY		 5387 /* Free MAC hash list for ADHOC */
5388 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
5389 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
5390 list_del(p);
bb8c093b 5391 kfree(list_entry(p, struct iwl4965_ibss_seq, list));
b481de9c
ZY		 5392 }
5393 }
5394
c8381fdc 5395 iwlcore_low_level_notify(priv, IWLCORE_REMOVE_EVT);
b481de9c 5396
bb8c093b 5397 iwl4965_dealloc_ucode_pci(priv);
b481de9c
ZY		 5398
5399 if (priv->rxq.bd)
a55360e4 5400 iwl_rx_queue_free(priv, &priv->rxq);
1053d35f 5401 iwl_hw_txq_ctx_free(priv);
b481de9c 5402
bf85ea4f 5403 iwlcore_clear_stations_table(priv);
073d3f5f 5404 iwl_eeprom_free(priv);
b481de9c 5405
b481de9c 5406
948c171c
MA		 5407 /*netif_stop_queue(dev); */
5408 flush_workqueue(priv->workqueue);
5409
bb8c093b 5410 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
b481de9c
ZY		 5411 * priv->workqueue... so we can't take down the workqueue
5412 * until now... */
5413 destroy_workqueue(priv->workqueue);
5414 priv->workqueue = NULL;
5415
b481de9c
ZY		 5416 pci_iounmap(pdev, priv->hw_base);
5417 pci_release_regions(pdev);
5418 pci_disable_device(pdev);
5419 pci_set_drvdata(pdev, NULL);
5420
6ba87956 5421 iwl_uninit_drv(priv);
b481de9c
ZY		 5422
5423 if (priv->ibss_beacon)
5424 dev_kfree_skb(priv->ibss_beacon);
5425
5426 ieee80211_free_hw(priv->hw);
5427}
5428
5429#ifdef CONFIG_PM
5430
bb8c093b 5431static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
b481de9c 5432{
c79dd5b5 5433 struct iwl_priv *priv = pci_get_drvdata(pdev);
b481de9c 5434
e655b9f0
ZY		 5435 if (priv->is_open) {
5436 set_bit(STATUS_IN_SUSPEND, &priv->status);
5437 iwl4965_mac_stop(priv->hw);
5438 priv->is_open = 1;
5439 }
b481de9c 5440
b481de9c
ZY		 5441 pci_set_power_state(pdev, PCI_D3hot);
5442
b481de9c
ZY		 5443 return 0;
5444}
5445
bb8c093b 5446static int iwl4965_pci_resume(struct pci_dev *pdev)
b481de9c 5447{
c79dd5b5 5448 struct iwl_priv *priv = pci_get_drvdata(pdev);
b481de9c 5449
b481de9c 5450 pci_set_power_state(pdev, PCI_D0);
b481de9c 5451
e655b9f0
ZY		 5452 if (priv->is_open)
5453 iwl4965_mac_start(priv->hw);
b481de9c 5454
e655b9f0 5455 clear_bit(STATUS_IN_SUSPEND, &priv->status);
b481de9c
ZY		 5456 return 0;
5457}
5458
5459#endif /* CONFIG_PM */
5460
5461/*****************************************************************************
5462 *
5463 * driver and module entry point
5464 *
5465 *****************************************************************************/
5466
fed9017e
RR		 5467/* Hardware specific file defines the PCI IDs table for that hardware module */
5468static struct pci_device_id iwl_hw_card_ids[] = {
5469 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
5470 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
5a6a256e
TW		 5471#ifdef CONFIG_IWL5000
5472 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
5473 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
5474 {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
5475#endif /* CONFIG_IWL5000 */
fed9017e
RR		 5476 {0}
5477};
5478MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
5479
5480static struct pci_driver iwl_driver = {
b481de9c 5481 .name = DRV_NAME,
fed9017e 5482 .id_table = iwl_hw_card_ids,
bb8c093b
CH		 5483 .probe = iwl4965_pci_probe,
5484 .remove = __devexit_p(iwl4965_pci_remove),
b481de9c 5485#ifdef CONFIG_PM
bb8c093b
CH		 5486 .suspend = iwl4965_pci_suspend,
5487 .resume = iwl4965_pci_resume,
b481de9c
ZY		 5488#endif
5489};
5490
bb8c093b 5491static int __init iwl4965_init(void)
b481de9c
ZY		 5492{
5493
5494 int ret;
5495 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
5496 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
897e1cf2
RC		 5497
5498 ret = iwl4965_rate_control_register();
5499 if (ret) {
5500 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
5501 return ret;
5502 }
5503
fed9017e 5504 ret = pci_register_driver(&iwl_driver);
b481de9c
ZY		 5505 if (ret) {
5506 IWL_ERROR("Unable to initialize PCI module\n");
897e1cf2 5507 goto error_register;
b481de9c 5508 }
b481de9c
ZY		 5509
5510 return ret;
897e1cf2 5511
897e1cf2
RC		 5512error_register:
5513 iwl4965_rate_control_unregister();
5514 return ret;
b481de9c
ZY		 5515}
5516
bb8c093b 5517static void __exit iwl4965_exit(void)
b481de9c 5518{
fed9017e 5519 pci_unregister_driver(&iwl_driver);
897e1cf2 5520 iwl4965_rate_control_unregister();
b481de9c
ZY		 5521}
5522
bb8c093b
CH		 5523module_exit(iwl4965_exit);
5524module_init(iwl4965_init);
Linux kernel - Deliverables
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