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iwlwifi: store ucode version number
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl3945-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>
b481de9c
ZY		 32#include <linux/init.h>
33#include <linux/pci.h>
34#include <linux/dma-mapping.h>
35#include <linux/delay.h>
36#include <linux/skbuff.h>
37#include <linux/netdevice.h>
38#include <linux/wireless.h>
39#include <linux/firmware.h>
b481de9c
ZY		 40#include <linux/etherdevice.h>
41#include <linux/if_arp.h>
42
43#include <net/ieee80211_radiotap.h>
7e272fcf 44#include <net/lib80211.h>
b481de9c
ZY		 45#include <net/mac80211.h>
46
47#include <asm/div64.h>
48
82b9a121 49#include "iwl-3945-core.h"
b481de9c
ZY		 50#include "iwl-3945.h"
51#include "iwl-helpers.h"
52
c8b0e6e1 53#ifdef CONFIG_IWL3945_DEBUG
bb8c093b 54u32 iwl3945_debug_level;
b481de9c
ZY		 55#endif
56
bb8c093b
CH		 57static int iwl3945_tx_queue_update_write_ptr(struct iwl3945_priv *priv,
58 struct iwl3945_tx_queue *txq);
416e1438 59
b481de9c
ZY		 60/******************************************************************************
61 *
62 * module boiler plate
63 *
64 ******************************************************************************/
65
66/* module parameters */
6440adb5
CB		 67static int iwl3945_param_disable_hw_scan; /* def: 0 = use 3945's h/w scan */
68static int iwl3945_param_debug; /* def: 0 = minimal debug log messages */
69static int iwl3945_param_disable; /* def: 0 = enable radio */
9fbab516 70static int iwl3945_param_antenna; /* def: 0 = both antennas (use diversity) */
6440adb5
CB		 71int iwl3945_param_hwcrypto; /* def: 0 = use software encryption */
72static int iwl3945_param_qos_enable = 1; /* def: 1 = use quality of service */
dfe7d458 73int iwl3945_param_queues_num = IWL39_MAX_NUM_QUEUES; /* def: 8 Tx queues */
b481de9c
ZY		 74
75/*
76 * module name, copyright, version, etc.
77 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
78 */
79
80#define DRV_DESCRIPTION \
81"Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
82
c8b0e6e1 83#ifdef CONFIG_IWL3945_DEBUG
b481de9c
ZY		 84#define VD "d"
85#else
86#define VD
87#endif
88
c8b0e6e1 89#ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
b481de9c
ZY		 90#define VS "s"
91#else
92#define VS
93#endif
94
b9e0b449 95#define IWLWIFI_VERSION "1.2.26k" VD VS
eb7ae89c 96#define DRV_COPYRIGHT "Copyright(c) 2003-2008 Intel Corporation"
b481de9c
ZY		 97#define DRV_VERSION IWLWIFI_VERSION
98
b481de9c
ZY		 99
100MODULE_DESCRIPTION(DRV_DESCRIPTION);
101MODULE_VERSION(DRV_VERSION);
102MODULE_AUTHOR(DRV_COPYRIGHT);
103MODULE_LICENSE("GPL");
104
8318d78a
JB		 105static const struct ieee80211_supported_band *iwl3945_get_band(
106 struct iwl3945_priv *priv, enum ieee80211_band band)
b481de9c 107{
8318d78a 108 return priv->hw->wiphy->bands[band];
b481de9c
ZY		 109}
110
b481de9c
ZY		 111/*************** DMA-QUEUE-GENERAL-FUNCTIONS *****
112 * DMA services
113 *
114 * Theory of operation
115 *
6440adb5
CB		 116 * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
117 * of buffer descriptors, each of which points to one or more data buffers for
118 * the device to read from or fill. Driver and device exchange status of each
119 * queue via "read" and "write" pointers. Driver keeps minimum of 2 empty
120 * entries in each circular buffer, to protect against confusing empty and full
121 * queue states.
122 *
123 * The device reads or writes the data in the queues via the device's several
124 * DMA/FIFO channels. Each queue is mapped to a single DMA channel.
b481de9c
ZY		 125 *
126 * For Tx queue, there are low mark and high mark limits. If, after queuing
127 * the packet for Tx, free space become < low mark, Tx queue stopped. When
128 * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
129 * Tx queue resumed.
130 *
6440adb5
CB		 131 * The 3945 operates with six queues: One receive queue, one transmit queue
132 * (#4) for sending commands to the device firmware, and four transmit queues
133 * (#0-3) for data tx via EDCA. An additional 2 HCCA queues are unused.
b481de9c
ZY		 134 ***************************************************/
135
c54b679d 136int iwl3945_queue_space(const struct iwl3945_queue *q)
b481de9c 137{
fc4b6853 138 int s = q->read_ptr - q->write_ptr;
b481de9c 139
fc4b6853 140 if (q->read_ptr > q->write_ptr)
b481de9c
ZY		 141 s -= q->n_bd;
142
143 if (s <= 0)
144 s += q->n_window;
145 /* keep some reserve to not confuse empty and full situations */
146 s -= 2;
147 if (s < 0)
148 s = 0;
149 return s;
150}
151
c54b679d 152int iwl3945_x2_queue_used(const struct iwl3945_queue *q, int i)
b481de9c 153{
fc4b6853
TW		 154 return q->write_ptr > q->read_ptr ?
155 (i >= q->read_ptr && i < q->write_ptr) :
156 !(i < q->read_ptr && i >= q->write_ptr);
b481de9c
ZY		 157}
158
c54b679d 159
bb8c093b 160static inline u8 get_cmd_index(struct iwl3945_queue *q, u32 index, int is_huge)
b481de9c 161{
6440adb5 162 /* This is for scan command, the big buffer at end of command array */
b481de9c 163 if (is_huge)
6440adb5 164 return q->n_window; /* must be power of 2 */
b481de9c 165
6440adb5 166 /* Otherwise, use normal size buffers */
b481de9c
ZY		 167 return index & (q->n_window - 1);
168}
169
6440adb5
CB		 170/**
171 * iwl3945_queue_init - Initialize queue's high/low-water and read/write indexes
172 */
bb8c093b 173static int iwl3945_queue_init(struct iwl3945_priv *priv, struct iwl3945_queue *q,
b481de9c
ZY		 174 int count, int slots_num, u32 id)
175{
176 q->n_bd = count;
177 q->n_window = slots_num;
178 q->id = id;
179
c54b679d
TW		 180 /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
181 * and iwl_queue_dec_wrap are broken. */
b481de9c
ZY		 182 BUG_ON(!is_power_of_2(count));
183
184 /* slots_num must be power-of-two size, otherwise
185 * get_cmd_index is broken. */
186 BUG_ON(!is_power_of_2(slots_num));
187
188 q->low_mark = q->n_window / 4;
189 if (q->low_mark < 4)
190 q->low_mark = 4;
191
192 q->high_mark = q->n_window / 8;
193 if (q->high_mark < 2)
194 q->high_mark = 2;
195
fc4b6853 196 q->write_ptr = q->read_ptr = 0;
b481de9c
ZY		 197
198 return 0;
199}
200
6440adb5
CB		 201/**
202 * iwl3945_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
203 */
bb8c093b
CH		 204static int iwl3945_tx_queue_alloc(struct iwl3945_priv *priv,
205 struct iwl3945_tx_queue *txq, u32 id)
b481de9c
ZY		 206{
207 struct pci_dev *dev = priv->pci_dev;
208
6440adb5
CB		 209 /* Driver private data, only for Tx (not command) queues,
210 * not shared with device. */
b481de9c
ZY		 211 if (id != IWL_CMD_QUEUE_NUM) {
212 txq->txb = kmalloc(sizeof(txq->txb[0]) *
213 TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
214 if (!txq->txb) {
01ebd063 215 IWL_ERROR("kmalloc for auxiliary BD "
b481de9c
ZY		 216 "structures failed\n");
217 goto error;
218 }
219 } else
220 txq->txb = NULL;
221
6440adb5
CB		 222 /* Circular buffer of transmit frame descriptors (TFDs),
223 * shared with device */
b481de9c
ZY		 224 txq->bd = pci_alloc_consistent(dev,
225 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
226 &txq->q.dma_addr);
227
228 if (!txq->bd) {
229 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
230 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
231 goto error;
232 }
233 txq->q.id = id;
234
235 return 0;
236
237 error:
3ac7f146
TW		 238 kfree(txq->txb);
239 txq->txb = NULL;
b481de9c
ZY		 240
241 return -ENOMEM;
242}
243
6440adb5
CB		 244/**
245 * iwl3945_tx_queue_init - Allocate and initialize one tx/cmd queue
246 */
bb8c093b
CH		 247int iwl3945_tx_queue_init(struct iwl3945_priv *priv,
248 struct iwl3945_tx_queue *txq, int slots_num, u32 txq_id)
b481de9c
ZY		 249{
250 struct pci_dev *dev = priv->pci_dev;
251 int len;
252 int rc = 0;
253
6440adb5
CB		 254 /*
255 * Alloc buffer array for commands (Tx or other types of commands).
256 * For the command queue (#4), allocate command space + one big
257 * command for scan, since scan command is very huge; the system will
258 * not have two scans at the same time, so only one is needed.
259 * For data Tx queues (all other queues), no super-size command
260 * space is needed.
261 */
bb8c093b 262 len = sizeof(struct iwl3945_cmd) * slots_num;
b481de9c
ZY		 263 if (txq_id == IWL_CMD_QUEUE_NUM)
264 len += IWL_MAX_SCAN_SIZE;
265 txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
266 if (!txq->cmd)
267 return -ENOMEM;
268
6440adb5 269 /* Alloc driver data array and TFD circular buffer */
bb8c093b 270 rc = iwl3945_tx_queue_alloc(priv, txq, txq_id);
b481de9c
ZY		 271 if (rc) {
272 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
273
274 return -ENOMEM;
275 }
276 txq->need_update = 0;
277
278 /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
c54b679d 279 * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
b481de9c 280 BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
6440adb5
CB		 281
282 /* Initialize queue high/low-water, head/tail indexes */
bb8c093b 283 iwl3945_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
b481de9c 284
6440adb5 285 /* Tell device where to find queue, enable DMA channel. */
bb8c093b 286 iwl3945_hw_tx_queue_init(priv, txq);
b481de9c
ZY		 287
288 return 0;
289}
290
291/**
bb8c093b 292 * iwl3945_tx_queue_free - Deallocate DMA queue.
b481de9c
ZY		 293 * @txq: Transmit queue to deallocate.
294 *
295 * Empty queue by removing and destroying all BD's.
6440adb5
CB		 296 * Free all buffers.
297 * 0-fill, but do not free "txq" descriptor structure.
b481de9c 298 */
bb8c093b 299void iwl3945_tx_queue_free(struct iwl3945_priv *priv, struct iwl3945_tx_queue *txq)
b481de9c 300{
bb8c093b 301 struct iwl3945_queue *q = &txq->q;
b481de9c
ZY		 302 struct pci_dev *dev = priv->pci_dev;
303 int len;
304
305 if (q->n_bd == 0)
306 return;
307
308 /* first, empty all BD's */
fc4b6853 309 for (; q->write_ptr != q->read_ptr;
c54b679d 310 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd))
bb8c093b 311 iwl3945_hw_txq_free_tfd(priv, txq);
b481de9c 312
bb8c093b 313 len = sizeof(struct iwl3945_cmd) * q->n_window;
b481de9c
ZY		 314 if (q->id == IWL_CMD_QUEUE_NUM)
315 len += IWL_MAX_SCAN_SIZE;
316
6440adb5 317 /* De-alloc array of command/tx buffers */
b481de9c
ZY		 318 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
319
6440adb5 320 /* De-alloc circular buffer of TFDs */
b481de9c 321 if (txq->q.n_bd)
bb8c093b 322 pci_free_consistent(dev, sizeof(struct iwl3945_tfd_frame) *
b481de9c
ZY		 323 txq->q.n_bd, txq->bd, txq->q.dma_addr);
324
6440adb5 325 /* De-alloc array of per-TFD driver data */
3ac7f146
TW		 326 kfree(txq->txb);
327 txq->txb = NULL;
b481de9c 328
6440adb5 329 /* 0-fill queue descriptor structure */
b481de9c
ZY		 330 memset(txq, 0, sizeof(*txq));
331}
332
bb8c093b 333const u8 iwl3945_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
b481de9c
ZY		 334
335/*************** STATION TABLE MANAGEMENT ****
9fbab516 336 * mac80211 should be examined to determine if sta_info is duplicating
b481de9c
ZY		 337 * the functionality provided here
338 */
339
340/**************************************************************/
01ebd063 341#if 0 /* temporary disable till we add real remove station */
6440adb5
CB		 342/**
343 * iwl3945_remove_station - Remove driver's knowledge of station.
344 *
345 * NOTE: This does not remove station from device's station table.
346 */
bb8c093b 347static u8 iwl3945_remove_station(struct iwl3945_priv *priv, const u8 *addr, int is_ap)
b481de9c
ZY		 348{
349 int index = IWL_INVALID_STATION;
350 int i;
351 unsigned long flags;
352
353 spin_lock_irqsave(&priv->sta_lock, flags);
354
355 if (is_ap)
356 index = IWL_AP_ID;
357 else if (is_broadcast_ether_addr(addr))
358 index = priv->hw_setting.bcast_sta_id;
359 else
360 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
361 if (priv->stations[i].used &&
362 !compare_ether_addr(priv->stations[i].sta.sta.addr,
363 addr)) {
364 index = i;
365 break;
366 }
367
368 if (unlikely(index == IWL_INVALID_STATION))
369 goto out;
370
371 if (priv->stations[index].used) {
372 priv->stations[index].used = 0;
373 priv->num_stations--;
374 }
375
376 BUG_ON(priv->num_stations < 0);
377
378out:
379 spin_unlock_irqrestore(&priv->sta_lock, flags);
380 return 0;
381}
556f8db7 382#endif
6440adb5
CB		 383
384/**
385 * iwl3945_clear_stations_table - Clear the driver's station table
386 *
387 * NOTE: This does not clear or otherwise alter the device's station table.
388 */
bb8c093b 389static void iwl3945_clear_stations_table(struct iwl3945_priv *priv)
b481de9c
ZY		 390{
391 unsigned long flags;
392
393 spin_lock_irqsave(&priv->sta_lock, flags);
394
395 priv->num_stations = 0;
396 memset(priv->stations, 0, sizeof(priv->stations));
397
398 spin_unlock_irqrestore(&priv->sta_lock, flags);
399}
400
6440adb5
CB		 401/**
402 * iwl3945_add_station - Add station to station tables in driver and device
403 */
bb8c093b 404u8 iwl3945_add_station(struct iwl3945_priv *priv, const u8 *addr, int is_ap, u8 flags)
b481de9c
ZY		 405{
406 int i;
407 int index = IWL_INVALID_STATION;
bb8c093b 408 struct iwl3945_station_entry *station;
b481de9c 409 unsigned long flags_spin;
c14c521e 410 u8 rate;
b481de9c
ZY		 411
412 spin_lock_irqsave(&priv->sta_lock, flags_spin);
413 if (is_ap)
414 index = IWL_AP_ID;
415 else if (is_broadcast_ether_addr(addr))
416 index = priv->hw_setting.bcast_sta_id;
417 else
418 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
419 if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
420 addr)) {
421 index = i;
422 break;
423 }
424
425 if (!priv->stations[i].used &&
426 index == IWL_INVALID_STATION)
427 index = i;
428 }
429
01ebd063 430 /* These two conditions has the same outcome but keep them separate
b481de9c
ZY		 431 since they have different meaning */
432 if (unlikely(index == IWL_INVALID_STATION)) {
433 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
434 return index;
435 }
436
437 if (priv->stations[index].used &&
438 !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
439 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
440 return index;
441 }
442
e174961c 443 IWL_DEBUG_ASSOC("Add STA ID %d: %pM\n", index, addr);
b481de9c
ZY		 444 station = &priv->stations[index];
445 station->used = 1;
446 priv->num_stations++;
447
6440adb5 448 /* Set up the REPLY_ADD_STA command to send to device */
bb8c093b 449 memset(&station->sta, 0, sizeof(struct iwl3945_addsta_cmd));
b481de9c
ZY		 450 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
451 station->sta.mode = 0;
452 station->sta.sta.sta_id = index;
453 station->sta.station_flags = 0;
454
8318d78a 455 if (priv->band == IEEE80211_BAND_5GHZ)
69946333
TW		 456 rate = IWL_RATE_6M_PLCP;
457 else
458 rate = IWL_RATE_1M_PLCP;
c14c521e
ZY		 459
460 /* Turn on both antennas for the station... */
461 station->sta.rate_n_flags =
bb8c093b 462 iwl3945_hw_set_rate_n_flags(rate, RATE_MCS_ANT_AB_MSK);
c14c521e
ZY		 463 station->current_rate.rate_n_flags =
464 le16_to_cpu(station->sta.rate_n_flags);
465
b481de9c 466 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
6440adb5
CB		 467
468 /* Add station to device's station table */
bb8c093b 469 iwl3945_send_add_station(priv, &station->sta, flags);
b481de9c
ZY		 470 return index;
471
472}
473
474/*************** DRIVER STATUS FUNCTIONS *****/
475
bb8c093b 476static inline int iwl3945_is_ready(struct iwl3945_priv *priv)
b481de9c
ZY		 477{
478 /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
479 * set but EXIT_PENDING is not */
480 return test_bit(STATUS_READY, &priv->status) &&
481 test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
482 !test_bit(STATUS_EXIT_PENDING, &priv->status);
483}
484
bb8c093b 485static inline int iwl3945_is_alive(struct iwl3945_priv *priv)
b481de9c
ZY		 486{
487 return test_bit(STATUS_ALIVE, &priv->status);
488}
489
bb8c093b 490static inline int iwl3945_is_init(struct iwl3945_priv *priv)
b481de9c
ZY		 491{
492 return test_bit(STATUS_INIT, &priv->status);
493}
494
80fcc9e2
AG		 495static inline int iwl3945_is_rfkill_sw(struct iwl3945_priv *priv)
496{
497 return test_bit(STATUS_RF_KILL_SW, &priv->status);
498}
499
500static inline int iwl3945_is_rfkill_hw(struct iwl3945_priv *priv)
501{
502 return test_bit(STATUS_RF_KILL_HW, &priv->status);
503}
504
bb8c093b 505static inline int iwl3945_is_rfkill(struct iwl3945_priv *priv)
b481de9c 506{
80fcc9e2
AG		 507 return iwl3945_is_rfkill_hw(priv) ||
508 iwl3945_is_rfkill_sw(priv);
b481de9c
ZY		 509}
510
bb8c093b 511static inline int iwl3945_is_ready_rf(struct iwl3945_priv *priv)
b481de9c
ZY		 512{
513
bb8c093b 514 if (iwl3945_is_rfkill(priv))
b481de9c
ZY		 515 return 0;
516
bb8c093b 517 return iwl3945_is_ready(priv);
b481de9c
ZY		 518}
519
520/*************** HOST COMMAND QUEUE FUNCTIONS *****/
521
c3056065 522#define IWL_CMD(x) case x: return #x
b481de9c
ZY		 523
524static const char *get_cmd_string(u8 cmd)
525{
526 switch (cmd) {
527 IWL_CMD(REPLY_ALIVE);
528 IWL_CMD(REPLY_ERROR);
529 IWL_CMD(REPLY_RXON);
530 IWL_CMD(REPLY_RXON_ASSOC);
531 IWL_CMD(REPLY_QOS_PARAM);
532 IWL_CMD(REPLY_RXON_TIMING);
533 IWL_CMD(REPLY_ADD_STA);
534 IWL_CMD(REPLY_REMOVE_STA);
535 IWL_CMD(REPLY_REMOVE_ALL_STA);
536 IWL_CMD(REPLY_3945_RX);
537 IWL_CMD(REPLY_TX);
538 IWL_CMD(REPLY_RATE_SCALE);
539 IWL_CMD(REPLY_LEDS_CMD);
540 IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
541 IWL_CMD(RADAR_NOTIFICATION);
542 IWL_CMD(REPLY_QUIET_CMD);
543 IWL_CMD(REPLY_CHANNEL_SWITCH);
544 IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
545 IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
546 IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
547 IWL_CMD(POWER_TABLE_CMD);
548 IWL_CMD(PM_SLEEP_NOTIFICATION);
549 IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
550 IWL_CMD(REPLY_SCAN_CMD);
551 IWL_CMD(REPLY_SCAN_ABORT_CMD);
552 IWL_CMD(SCAN_START_NOTIFICATION);
553 IWL_CMD(SCAN_RESULTS_NOTIFICATION);
554 IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
555 IWL_CMD(BEACON_NOTIFICATION);
556 IWL_CMD(REPLY_TX_BEACON);
557 IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
558 IWL_CMD(QUIET_NOTIFICATION);
559 IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
560 IWL_CMD(MEASURE_ABORT_NOTIFICATION);
561 IWL_CMD(REPLY_BT_CONFIG);
562 IWL_CMD(REPLY_STATISTICS_CMD);
563 IWL_CMD(STATISTICS_NOTIFICATION);
564 IWL_CMD(REPLY_CARD_STATE_CMD);
565 IWL_CMD(CARD_STATE_NOTIFICATION);
566 IWL_CMD(MISSED_BEACONS_NOTIFICATION);
567 default:
568 return "UNKNOWN";
569
570 }
571}
572
573#define HOST_COMPLETE_TIMEOUT (HZ / 2)
574
575/**
bb8c093b 576 * iwl3945_enqueue_hcmd - enqueue a uCode command
b481de9c
ZY		 577 * @priv: device private data point
578 * @cmd: a point to the ucode command structure
579 *
580 * The function returns < 0 values to indicate the operation is
581 * failed. On success, it turns the index (> 0) of command in the
582 * command queue.
583 */
bb8c093b 584static int iwl3945_enqueue_hcmd(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
b481de9c 585{
bb8c093b
CH		 586 struct iwl3945_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
587 struct iwl3945_queue *q = &txq->q;
588 struct iwl3945_tfd_frame *tfd;
b481de9c 589 u32 *control_flags;
bb8c093b 590 struct iwl3945_cmd *out_cmd;
b481de9c
ZY		 591 u32 idx;
592 u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
593 dma_addr_t phys_addr;
594 int pad;
595 u16 count;
596 int ret;
597 unsigned long flags;
598
599 /* If any of the command structures end up being larger than
600 * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
601 * we will need to increase the size of the TFD entries */
602 BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
603 !(cmd->meta.flags & CMD_SIZE_HUGE));
604
c342a1b9
GG		 605
606 if (iwl3945_is_rfkill(priv)) {
607 IWL_DEBUG_INFO("Not sending command - RF KILL");
608 return -EIO;
609 }
610
bb8c093b 611 if (iwl3945_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
b481de9c
ZY		 612 IWL_ERROR("No space for Tx\n");
613 return -ENOSPC;
614 }
615
616 spin_lock_irqsave(&priv->hcmd_lock, flags);
617
fc4b6853 618 tfd = &txq->bd[q->write_ptr];
b481de9c
ZY		 619 memset(tfd, 0, sizeof(*tfd));
620
621 control_flags = (u32 *) tfd;
622
fc4b6853 623 idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
b481de9c
ZY		 624 out_cmd = &txq->cmd[idx];
625
626 out_cmd->hdr.cmd = cmd->id;
627 memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
628 memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
629
630 /* At this point, the out_cmd now has all of the incoming cmd
631 * information */
632
633 out_cmd->hdr.flags = 0;
634 out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
fc4b6853 635 INDEX_TO_SEQ(q->write_ptr));
b481de9c
ZY		 636 if (out_cmd->meta.flags & CMD_SIZE_HUGE)
637 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
638
639 phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
bb8c093b
CH		 640 offsetof(struct iwl3945_cmd, hdr);
641 iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
b481de9c
ZY		 642
643 pad = U32_PAD(cmd->len);
644 count = TFD_CTL_COUNT_GET(*control_flags);
645 *control_flags = TFD_CTL_COUNT_SET(count) | TFD_CTL_PAD_SET(pad);
646
647 IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
648 "%d bytes at %d[%d]:%d\n",
649 get_cmd_string(out_cmd->hdr.cmd),
650 out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
fc4b6853 651 fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
b481de9c
ZY		 652
653 txq->need_update = 1;
6440adb5
CB		 654
655 /* Increment and update queue's write index */
c54b679d 656 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
bb8c093b 657 ret = iwl3945_tx_queue_update_write_ptr(priv, txq);
b481de9c
ZY		 658
659 spin_unlock_irqrestore(&priv->hcmd_lock, flags);
660 return ret ? ret : idx;
661}
662
bb8c093b 663static int iwl3945_send_cmd_async(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
b481de9c
ZY		 664{
665 int ret;
666
667 BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
668
669 /* An asynchronous command can not expect an SKB to be set. */
670 BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
671
672 /* An asynchronous command MUST have a callback. */
673 BUG_ON(!cmd->meta.u.callback);
674
675 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
676 return -EBUSY;
677
bb8c093b 678 ret = iwl3945_enqueue_hcmd(priv, cmd);
b481de9c 679 if (ret < 0) {
bb8c093b 680 IWL_ERROR("Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
b481de9c
ZY		 681 get_cmd_string(cmd->id), ret);
682 return ret;
683 }
684 return 0;
685}
686
bb8c093b 687static int iwl3945_send_cmd_sync(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
b481de9c
ZY		 688{
689 int cmd_idx;
690 int ret;
b481de9c
ZY		 691
692 BUG_ON(cmd->meta.flags & CMD_ASYNC);
693
694 /* A synchronous command can not have a callback set. */
695 BUG_ON(cmd->meta.u.callback != NULL);
696
e5472978 697 if (test_and_set_bit(STATUS_HCMD_SYNC_ACTIVE, &priv->status)) {
b481de9c
ZY		 698 IWL_ERROR("Error sending %s: Already sending a host command\n",
699 get_cmd_string(cmd->id));
e5472978
TW		 700 ret = -EBUSY;
701 goto out;
b481de9c
ZY		 702 }
703
704 set_bit(STATUS_HCMD_ACTIVE, &priv->status);
705
706 if (cmd->meta.flags & CMD_WANT_SKB)
707 cmd->meta.source = &cmd->meta;
708
bb8c093b 709 cmd_idx = iwl3945_enqueue_hcmd(priv, cmd);
b481de9c
ZY		 710 if (cmd_idx < 0) {
711 ret = cmd_idx;
bb8c093b 712 IWL_ERROR("Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
b481de9c
ZY		 713 get_cmd_string(cmd->id), ret);
714 goto out;
715 }
716
717 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
718 !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
719 HOST_COMPLETE_TIMEOUT);
720 if (!ret) {
721 if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
722 IWL_ERROR("Error sending %s: time out after %dms.\n",
723 get_cmd_string(cmd->id),
724 jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
725
726 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
727 ret = -ETIMEDOUT;
728 goto cancel;
729 }
730 }
731
732 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
733 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
734 get_cmd_string(cmd->id));
735 ret = -ECANCELED;
736 goto fail;
737 }
738 if (test_bit(STATUS_FW_ERROR, &priv->status)) {
739 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
740 get_cmd_string(cmd->id));
741 ret = -EIO;
742 goto fail;
743 }
744 if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
745 IWL_ERROR("Error: Response NULL in '%s'\n",
746 get_cmd_string(cmd->id));
747 ret = -EIO;
748 goto out;
749 }
750
751 ret = 0;
752 goto out;
753
754cancel:
755 if (cmd->meta.flags & CMD_WANT_SKB) {
bb8c093b 756 struct iwl3945_cmd *qcmd;
b481de9c
ZY		 757
758 /* Cancel the CMD_WANT_SKB flag for the cmd in the
759 * TX cmd queue. Otherwise in case the cmd comes
760 * in later, it will possibly set an invalid
761 * address (cmd->meta.source). */
762 qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
763 qcmd->meta.flags &= ~CMD_WANT_SKB;
764 }
765fail:
766 if (cmd->meta.u.skb) {
767 dev_kfree_skb_any(cmd->meta.u.skb);
768 cmd->meta.u.skb = NULL;
769 }
770out:
e5472978 771 clear_bit(STATUS_HCMD_SYNC_ACTIVE, &priv->status);
b481de9c
ZY		 772 return ret;
773}
774
bb8c093b 775int iwl3945_send_cmd(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
b481de9c 776{
b481de9c 777 if (cmd->meta.flags & CMD_ASYNC)
bb8c093b 778 return iwl3945_send_cmd_async(priv, cmd);
b481de9c 779
bb8c093b 780 return iwl3945_send_cmd_sync(priv, cmd);
b481de9c
ZY		 781}
782
bb8c093b 783int iwl3945_send_cmd_pdu(struct iwl3945_priv *priv, u8 id, u16 len, const void *data)
b481de9c 784{
bb8c093b 785 struct iwl3945_host_cmd cmd = {
b481de9c
ZY		 786 .id = id,
787 .len = len,
788 .data = data,
789 };
790
bb8c093b 791 return iwl3945_send_cmd_sync(priv, &cmd);
b481de9c
ZY		 792}
793
bb8c093b 794static int __must_check iwl3945_send_cmd_u32(struct iwl3945_priv *priv, u8 id, u32 val)
b481de9c 795{
bb8c093b 796 struct iwl3945_host_cmd cmd = {
b481de9c
ZY		 797 .id = id,
798 .len = sizeof(val),
799 .data = &val,
800 };
801
bb8c093b 802 return iwl3945_send_cmd_sync(priv, &cmd);
b481de9c
ZY		 803}
804
bb8c093b 805int iwl3945_send_statistics_request(struct iwl3945_priv *priv)
b481de9c 806{
bb8c093b 807 return iwl3945_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
b481de9c
ZY		 808}
809
b481de9c 810/**
bb8c093b 811 * iwl3945_set_rxon_channel - Set the phymode and channel values in staging RXON
8318d78a
JB		 812 * @band: 2.4 or 5 GHz band
813 * @channel: Any channel valid for the requested band
b481de9c 814
8318d78a 815 * In addition to setting the staging RXON, priv->band is also set.
b481de9c
ZY		 816 *
817 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
8318d78a 818 * in the staging RXON flag structure based on the band
b481de9c 819 */
8318d78a
JB		 820static int iwl3945_set_rxon_channel(struct iwl3945_priv *priv,
821 enum ieee80211_band band,
822 u16 channel)
b481de9c 823{
8318d78a 824 if (!iwl3945_get_channel_info(priv, band, channel)) {
b481de9c 825 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
8318d78a 826 channel, band);
b481de9c
ZY		 827 return -EINVAL;
828 }
829
830 if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
8318d78a 831 (priv->band == band))
b481de9c
ZY		 832 return 0;
833
834 priv->staging_rxon.channel = cpu_to_le16(channel);
8318d78a 835 if (band == IEEE80211_BAND_5GHZ)
b481de9c
ZY		 836 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
837 else
838 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
839
8318d78a 840 priv->band = band;
b481de9c 841
8318d78a 842 IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, band);
b481de9c
ZY		 843
844 return 0;
845}
846
847/**
bb8c093b 848 * iwl3945_check_rxon_cmd - validate RXON structure is valid
b481de9c
ZY		 849 *
850 * NOTE: This is really only useful during development and can eventually
851 * be #ifdef'd out once the driver is stable and folks aren't actively
852 * making changes
853 */
bb8c093b 854static int iwl3945_check_rxon_cmd(struct iwl3945_rxon_cmd *rxon)
b481de9c
ZY		 855{
856 int error = 0;
857 int counter = 1;
858
859 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
860 error |= le32_to_cpu(rxon->flags &
861 (RXON_FLG_TGJ_NARROW_BAND_MSK |
862 RXON_FLG_RADAR_DETECT_MSK));
863 if (error)
864 IWL_WARNING("check 24G fields %d | %d\n",
865 counter++, error);
866 } else {
867 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
868 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
869 if (error)
870 IWL_WARNING("check 52 fields %d | %d\n",
871 counter++, error);
872 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
873 if (error)
874 IWL_WARNING("check 52 CCK %d | %d\n",
875 counter++, error);
876 }
877 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
878 if (error)
879 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
880
881 /* make sure basic rates 6Mbps and 1Mbps are supported */
882 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
883 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
884 if (error)
885 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
886
887 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
888 if (error)
889 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
890
891 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
892 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
893 if (error)
894 IWL_WARNING("check CCK and short slot %d | %d\n",
895 counter++, error);
896
897 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
898 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
899 if (error)
900 IWL_WARNING("check CCK & auto detect %d | %d\n",
901 counter++, error);
902
903 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
904 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
905 if (error)
906 IWL_WARNING("check TGG and auto detect %d | %d\n",
907 counter++, error);
908
909 if ((rxon->flags & RXON_FLG_DIS_DIV_MSK))
910 error |= ((rxon->flags & (RXON_FLG_ANT_B_MSK |
911 RXON_FLG_ANT_A_MSK)) == 0);
912 if (error)
913 IWL_WARNING("check antenna %d %d\n", counter++, error);
914
915 if (error)
916 IWL_WARNING("Tuning to channel %d\n",
917 le16_to_cpu(rxon->channel));
918
919 if (error) {
bb8c093b 920 IWL_ERROR("Not a valid iwl3945_rxon_assoc_cmd field values\n");
b481de9c
ZY		 921 return -1;
922 }
923 return 0;
924}
925
926/**
9fbab516 927 * iwl3945_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
01ebd063 928 * @priv: staging_rxon is compared to active_rxon
b481de9c 929 *
9fbab516
BC		 930 * If the RXON structure is changing enough to require a new tune,
931 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
932 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
b481de9c 933 */
bb8c093b 934static int iwl3945_full_rxon_required(struct iwl3945_priv *priv)
b481de9c
ZY		 935{
936
937 /* These items are only settable from the full RXON command */
5d1e2325 938 if (!(iwl3945_is_associated(priv)) ||
b481de9c
ZY		 939 compare_ether_addr(priv->staging_rxon.bssid_addr,
940 priv->active_rxon.bssid_addr) ||
941 compare_ether_addr(priv->staging_rxon.node_addr,
942 priv->active_rxon.node_addr) ||
943 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
944 priv->active_rxon.wlap_bssid_addr) ||
945 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
946 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
947 (priv->staging_rxon.air_propagation !=
948 priv->active_rxon.air_propagation) ||
949 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
950 return 1;
951
952 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
953 * be updated with the RXON_ASSOC command -- however only some
954 * flag transitions are allowed using RXON_ASSOC */
955
956 /* Check if we are not switching bands */
957 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
958 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
959 return 1;
960
961 /* Check if we are switching association toggle */
962 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
963 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
964 return 1;
965
966 return 0;
967}
968
bb8c093b 969static int iwl3945_send_rxon_assoc(struct iwl3945_priv *priv)
b481de9c
ZY		 970{
971 int rc = 0;
bb8c093b
CH		 972 struct iwl3945_rx_packet *res = NULL;
973 struct iwl3945_rxon_assoc_cmd rxon_assoc;
974 struct iwl3945_host_cmd cmd = {
b481de9c
ZY		 975 .id = REPLY_RXON_ASSOC,
976 .len = sizeof(rxon_assoc),
977 .meta.flags = CMD_WANT_SKB,
978 .data = &rxon_assoc,
979 };
bb8c093b
CH		 980 const struct iwl3945_rxon_cmd *rxon1 = &priv->staging_rxon;
981 const struct iwl3945_rxon_cmd *rxon2 = &priv->active_rxon;
b481de9c
ZY		 982
983 if ((rxon1->flags == rxon2->flags) &&
984 (rxon1->filter_flags == rxon2->filter_flags) &&
985 (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
986 (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
987 IWL_DEBUG_INFO("Using current RXON_ASSOC. Not resending.\n");
988 return 0;
989 }
990
991 rxon_assoc.flags = priv->staging_rxon.flags;
992 rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
993 rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
994 rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
995 rxon_assoc.reserved = 0;
996
bb8c093b 997 rc = iwl3945_send_cmd_sync(priv, &cmd);
b481de9c
ZY		 998 if (rc)
999 return rc;
1000
bb8c093b 1001 res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
b481de9c
ZY		 1002 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1003 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1004 rc = -EIO;
1005 }
1006
1007 priv->alloc_rxb_skb--;
1008 dev_kfree_skb_any(cmd.meta.u.skb);
1009
1010 return rc;
1011}
1012
1013/**
bb8c093b 1014 * iwl3945_commit_rxon - commit staging_rxon to hardware
b481de9c 1015 *
01ebd063 1016 * The RXON command in staging_rxon is committed to the hardware and
b481de9c
ZY		 1017 * the active_rxon structure is updated with the new data. This
1018 * function correctly transitions out of the RXON_ASSOC_MSK state if
1019 * a HW tune is required based on the RXON structure changes.
1020 */
bb8c093b 1021static int iwl3945_commit_rxon(struct iwl3945_priv *priv)
b481de9c
ZY		 1022{
1023 /* cast away the const for active_rxon in this function */
bb8c093b 1024 struct iwl3945_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
b481de9c
ZY		 1025 int rc = 0;
1026
bb8c093b 1027 if (!iwl3945_is_alive(priv))
b481de9c
ZY		 1028 return -1;
1029
1030 /* always get timestamp with Rx frame */
1031 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
1032
1033 /* select antenna */
1034 priv->staging_rxon.flags &=
1035 ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK);
1036 priv->staging_rxon.flags |= iwl3945_get_antenna_flags(priv);
1037
bb8c093b 1038 rc = iwl3945_check_rxon_cmd(&priv->staging_rxon);
b481de9c
ZY		 1039 if (rc) {
1040 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
1041 return -EINVAL;
1042 }
1043
1044 /* If we don't need to send a full RXON, we can use
bb8c093b 1045 * iwl3945_rxon_assoc_cmd which is used to reconfigure filter
b481de9c 1046 * and other flags for the current radio configuration. */
bb8c093b
CH		 1047 if (!iwl3945_full_rxon_required(priv)) {
1048 rc = iwl3945_send_rxon_assoc(priv);
b481de9c
ZY		 1049 if (rc) {
1050 IWL_ERROR("Error setting RXON_ASSOC "
1051 "configuration (%d).\n", rc);
1052 return rc;
1053 }
1054
1055 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1056
1057 return 0;
1058 }
1059
1060 /* If we are currently associated and the new config requires
1061 * an RXON_ASSOC and the new config wants the associated mask enabled,
1062 * we must clear the associated from the active configuration
1063 * before we apply the new config */
bb8c093b 1064 if (iwl3945_is_associated(priv) &&
b481de9c
ZY		 1065 (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
1066 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1067 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1068
bb8c093b
CH		 1069 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
1070 sizeof(struct iwl3945_rxon_cmd),
b481de9c
ZY		 1071 &priv->active_rxon);
1072
1073 /* If the mask clearing failed then we set
1074 * active_rxon back to what it was previously */
1075 if (rc) {
1076 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1077 IWL_ERROR("Error clearing ASSOC_MSK on current "
1078 "configuration (%d).\n", rc);
1079 return rc;
1080 }
b481de9c
ZY		 1081 }
1082
1083 IWL_DEBUG_INFO("Sending RXON\n"
1084 "* with%s RXON_FILTER_ASSOC_MSK\n"
1085 "* channel = %d\n"
e174961c 1086 "* bssid = %pM\n",
b481de9c
ZY		 1087 ((priv->staging_rxon.filter_flags &
1088 RXON_FILTER_ASSOC_MSK) ? "" : "out"),
1089 le16_to_cpu(priv->staging_rxon.channel),
e174961c 1090 priv->staging_rxon.bssid_addr);
b481de9c
ZY		 1091
1092 /* Apply the new configuration */
bb8c093b
CH		 1093 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
1094 sizeof(struct iwl3945_rxon_cmd), &priv->staging_rxon);
b481de9c
ZY		 1095 if (rc) {
1096 IWL_ERROR("Error setting new configuration (%d).\n", rc);
1097 return rc;
1098 }
1099
1100 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1101
bb8c093b 1102 iwl3945_clear_stations_table(priv);
556f8db7 1103
b481de9c
ZY		 1104 /* If we issue a new RXON command which required a tune then we must
1105 * send a new TXPOWER command or we won't be able to Tx any frames */
bb8c093b 1106 rc = iwl3945_hw_reg_send_txpower(priv);
b481de9c
ZY		 1107 if (rc) {
1108 IWL_ERROR("Error setting Tx power (%d).\n", rc);
1109 return rc;
1110 }
1111
1112 /* Add the broadcast address so we can send broadcast frames */
bb8c093b 1113 if (iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0) ==
b481de9c
ZY		 1114 IWL_INVALID_STATION) {
1115 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1116 return -EIO;
1117 }
1118
1119 /* If we have set the ASSOC_MSK and we are in BSS mode then
1120 * add the IWL_AP_ID to the station rate table */
bb8c093b 1121 if (iwl3945_is_associated(priv) &&
05c914fe 1122 (priv->iw_mode == NL80211_IFTYPE_STATION))
bb8c093b 1123 if (iwl3945_add_station(priv, priv->active_rxon.bssid_addr, 1, 0)
b481de9c
ZY		 1124 == IWL_INVALID_STATION) {
1125 IWL_ERROR("Error adding AP address for transmit.\n");
1126 return -EIO;
1127 }
1128
8318d78a 1129 /* Init the hardware's rate fallback order based on the band */
b481de9c
ZY		 1130 rc = iwl3945_init_hw_rate_table(priv);
1131 if (rc) {
1132 IWL_ERROR("Error setting HW rate table: %02X\n", rc);
1133 return -EIO;
1134 }
1135
1136 return 0;
1137}
1138
bb8c093b 1139static int iwl3945_send_bt_config(struct iwl3945_priv *priv)
b481de9c 1140{
bb8c093b 1141 struct iwl3945_bt_cmd bt_cmd = {
b481de9c
ZY		 1142 .flags = 3,
1143 .lead_time = 0xAA,
1144 .max_kill = 1,
1145 .kill_ack_mask = 0,
1146 .kill_cts_mask = 0,
1147 };
1148
bb8c093b
CH		 1149 return iwl3945_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1150 sizeof(struct iwl3945_bt_cmd), &bt_cmd);
b481de9c
ZY		 1151}
1152
bb8c093b 1153static int iwl3945_send_scan_abort(struct iwl3945_priv *priv)
b481de9c
ZY		 1154{
1155 int rc = 0;
bb8c093b
CH		 1156 struct iwl3945_rx_packet *res;
1157 struct iwl3945_host_cmd cmd = {
b481de9c
ZY		 1158 .id = REPLY_SCAN_ABORT_CMD,
1159 .meta.flags = CMD_WANT_SKB,
1160 };
1161
1162 /* If there isn't a scan actively going on in the hardware
1163 * then we are in between scan bands and not actually
1164 * actively scanning, so don't send the abort command */
1165 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1166 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1167 return 0;
1168 }
1169
bb8c093b 1170 rc = iwl3945_send_cmd_sync(priv, &cmd);
b481de9c
ZY		 1171 if (rc) {
1172 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1173 return rc;
1174 }
1175
bb8c093b 1176 res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
b481de9c
ZY		 1177 if (res->u.status != CAN_ABORT_STATUS) {
1178 /* The scan abort will return 1 for success or
1179 * 2 for "failure". A failure condition can be
1180 * due to simply not being in an active scan which
1181 * can occur if we send the scan abort before we
1182 * the microcode has notified us that a scan is
1183 * completed. */
1184 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1185 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1186 clear_bit(STATUS_SCAN_HW, &priv->status);
1187 }
1188
1189 dev_kfree_skb_any(cmd.meta.u.skb);
1190
1191 return rc;
1192}
1193
bb8c093b
CH		 1194static int iwl3945_card_state_sync_callback(struct iwl3945_priv *priv,
1195 struct iwl3945_cmd *cmd,
b481de9c
ZY		 1196 struct sk_buff *skb)
1197{
1198 return 1;
1199}
1200
1201/*
1202 * CARD_STATE_CMD
1203 *
9fbab516 1204 * Use: Sets the device's internal card state to enable, disable, or halt
b481de9c
ZY		 1205 *
1206 * When in the 'enable' state the card operates as normal.
1207 * When in the 'disable' state, the card enters into a low power mode.
1208 * When in the 'halt' state, the card is shut down and must be fully
1209 * restarted to come back on.
1210 */
bb8c093b 1211static int iwl3945_send_card_state(struct iwl3945_priv *priv, u32 flags, u8 meta_flag)
b481de9c 1212{
bb8c093b 1213 struct iwl3945_host_cmd cmd = {
b481de9c
ZY		 1214 .id = REPLY_CARD_STATE_CMD,
1215 .len = sizeof(u32),
1216 .data = &flags,
1217 .meta.flags = meta_flag,
1218 };
1219
1220 if (meta_flag & CMD_ASYNC)
bb8c093b 1221 cmd.meta.u.callback = iwl3945_card_state_sync_callback;
b481de9c 1222
bb8c093b 1223 return iwl3945_send_cmd(priv, &cmd);
b481de9c
ZY		 1224}
1225
bb8c093b
CH		 1226static int iwl3945_add_sta_sync_callback(struct iwl3945_priv *priv,
1227 struct iwl3945_cmd *cmd, struct sk_buff *skb)
b481de9c 1228{
bb8c093b 1229 struct iwl3945_rx_packet *res = NULL;
b481de9c
ZY		 1230
1231 if (!skb) {
1232 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1233 return 1;
1234 }
1235
bb8c093b 1236 res = (struct iwl3945_rx_packet *)skb->data;
b481de9c
ZY		 1237 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1238 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1239 res->hdr.flags);
1240 return 1;
1241 }
1242
1243 switch (res->u.add_sta.status) {
1244 case ADD_STA_SUCCESS_MSK:
1245 break;
1246 default:
1247 break;
1248 }
1249
1250 /* We didn't cache the SKB; let the caller free it */
1251 return 1;
1252}
1253
bb8c093b
CH		 1254int iwl3945_send_add_station(struct iwl3945_priv *priv,
1255 struct iwl3945_addsta_cmd *sta, u8 flags)
b481de9c 1256{
bb8c093b 1257 struct iwl3945_rx_packet *res = NULL;
b481de9c 1258 int rc = 0;
bb8c093b 1259 struct iwl3945_host_cmd cmd = {
b481de9c 1260 .id = REPLY_ADD_STA,
bb8c093b 1261 .len = sizeof(struct iwl3945_addsta_cmd),
b481de9c
ZY		 1262 .meta.flags = flags,
1263 .data = sta,
1264 };
1265
1266 if (flags & CMD_ASYNC)
bb8c093b 1267 cmd.meta.u.callback = iwl3945_add_sta_sync_callback;
b481de9c
ZY		 1268 else
1269 cmd.meta.flags |= CMD_WANT_SKB;
1270
bb8c093b 1271 rc = iwl3945_send_cmd(priv, &cmd);
b481de9c
ZY		 1272
1273 if (rc || (flags & CMD_ASYNC))
1274 return rc;
1275
bb8c093b 1276 res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
b481de9c
ZY		 1277 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1278 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1279 res->hdr.flags);
1280 rc = -EIO;
1281 }
1282
1283 if (rc == 0) {
1284 switch (res->u.add_sta.status) {
1285 case ADD_STA_SUCCESS_MSK:
1286 IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1287 break;
1288 default:
1289 rc = -EIO;
1290 IWL_WARNING("REPLY_ADD_STA failed\n");
1291 break;
1292 }
1293 }
1294
1295 priv->alloc_rxb_skb--;
1296 dev_kfree_skb_any(cmd.meta.u.skb);
1297
1298 return rc;
1299}
1300
bb8c093b 1301static int iwl3945_update_sta_key_info(struct iwl3945_priv *priv,
b481de9c
ZY		 1302 struct ieee80211_key_conf *keyconf,
1303 u8 sta_id)
1304{
1305 unsigned long flags;
1306 __le16 key_flags = 0;
1307
1308 switch (keyconf->alg) {
1309 case ALG_CCMP:
1310 key_flags |= STA_KEY_FLG_CCMP;
1311 key_flags |= cpu_to_le16(
1312 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1313 key_flags &= ~STA_KEY_FLG_INVALID;
1314 break;
1315 case ALG_TKIP:
1316 case ALG_WEP:
b481de9c
ZY		 1317 default:
1318 return -EINVAL;
1319 }
1320 spin_lock_irqsave(&priv->sta_lock, flags);
1321 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1322 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1323 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1324 keyconf->keylen);
1325
1326 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1327 keyconf->keylen);
1328 priv->stations[sta_id].sta.key.key_flags = key_flags;
1329 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1330 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1331
1332 spin_unlock_irqrestore(&priv->sta_lock, flags);
1333
1334 IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
bb8c093b 1335 iwl3945_send_add_station(priv, &priv->stations[sta_id].sta, 0);
b481de9c
ZY		 1336 return 0;
1337}
1338
bb8c093b 1339static int iwl3945_clear_sta_key_info(struct iwl3945_priv *priv, u8 sta_id)
b481de9c
ZY		 1340{
1341 unsigned long flags;
1342
1343 spin_lock_irqsave(&priv->sta_lock, flags);
bb8c093b
CH		 1344 memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl3945_hw_key));
1345 memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl3945_keyinfo));
b481de9c
ZY		 1346 priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1347 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1348 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1349 spin_unlock_irqrestore(&priv->sta_lock, flags);
1350
1351 IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
bb8c093b 1352 iwl3945_send_add_station(priv, &priv->stations[sta_id].sta, 0);
b481de9c
ZY		 1353 return 0;
1354}
1355
bb8c093b 1356static void iwl3945_clear_free_frames(struct iwl3945_priv *priv)
b481de9c
ZY		 1357{
1358 struct list_head *element;
1359
1360 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1361 priv->frames_count);
1362
1363 while (!list_empty(&priv->free_frames)) {
1364 element = priv->free_frames.next;
1365 list_del(element);
bb8c093b 1366 kfree(list_entry(element, struct iwl3945_frame, list));
b481de9c
ZY		 1367 priv->frames_count--;
1368 }
1369
1370 if (priv->frames_count) {
1371 IWL_WARNING("%d frames still in use. Did we lose one?\n",
1372 priv->frames_count);
1373 priv->frames_count = 0;
1374 }
1375}
1376
bb8c093b 1377static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl3945_priv *priv)
b481de9c 1378{
bb8c093b 1379 struct iwl3945_frame *frame;
b481de9c
ZY		 1380 struct list_head *element;
1381 if (list_empty(&priv->free_frames)) {
1382 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1383 if (!frame) {
1384 IWL_ERROR("Could not allocate frame!\n");
1385 return NULL;
1386 }
1387
1388 priv->frames_count++;
1389 return frame;
1390 }
1391
1392 element = priv->free_frames.next;
1393 list_del(element);
bb8c093b 1394 return list_entry(element, struct iwl3945_frame, list);
b481de9c
ZY		 1395}
1396
bb8c093b 1397static void iwl3945_free_frame(struct iwl3945_priv *priv, struct iwl3945_frame *frame)
b481de9c
ZY		 1398{
1399 memset(frame, 0, sizeof(*frame));
1400 list_add(&frame->list, &priv->free_frames);
1401}
1402
bb8c093b 1403unsigned int iwl3945_fill_beacon_frame(struct iwl3945_priv *priv,
b481de9c
ZY		 1404 struct ieee80211_hdr *hdr,
1405 const u8 *dest, int left)
1406{
1407
bb8c093b 1408 if (!iwl3945_is_associated(priv) || !priv->ibss_beacon ||
05c914fe
JB		 1409 ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
1410 (priv->iw_mode != NL80211_IFTYPE_AP)))
b481de9c
ZY		 1411 return 0;
1412
1413 if (priv->ibss_beacon->len > left)
1414 return 0;
1415
1416 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1417
1418 return priv->ibss_beacon->len;
1419}
1420
c24f0817 1421static u8 iwl3945_rate_get_lowest_plcp(struct iwl3945_priv *priv)
b481de9c
ZY		 1422{
1423 u8 i;
c24f0817
KA		 1424 int rate_mask;
1425
1426 /* Set rate mask*/
1427 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
dbce56a4 1428 rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
c24f0817 1429 else
dbce56a4 1430 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
b481de9c
ZY		 1431
1432 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
bb8c093b 1433 i = iwl3945_rates[i].next_ieee) {
b481de9c 1434 if (rate_mask & (1 << i))
bb8c093b 1435 return iwl3945_rates[i].plcp;
b481de9c
ZY		 1436 }
1437
c24f0817
KA		 1438 /* No valid rate was found. Assign the lowest one */
1439 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
1440 return IWL_RATE_1M_PLCP;
1441 else
1442 return IWL_RATE_6M_PLCP;
b481de9c
ZY		 1443}
1444
bb8c093b 1445static int iwl3945_send_beacon_cmd(struct iwl3945_priv *priv)
b481de9c 1446{
bb8c093b 1447 struct iwl3945_frame *frame;
b481de9c
ZY		 1448 unsigned int frame_size;
1449 int rc;
1450 u8 rate;
1451
bb8c093b 1452 frame = iwl3945_get_free_frame(priv);
b481de9c
ZY		 1453
1454 if (!frame) {
1455 IWL_ERROR("Could not obtain free frame buffer for beacon "
1456 "command.\n");
1457 return -ENOMEM;
1458 }
1459
c24f0817 1460 rate = iwl3945_rate_get_lowest_plcp(priv);
b481de9c 1461
bb8c093b 1462 frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
b481de9c 1463
bb8c093b 1464 rc = iwl3945_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
b481de9c
ZY		 1465 &frame->u.cmd[0]);
1466
bb8c093b 1467 iwl3945_free_frame(priv, frame);
b481de9c
ZY		 1468
1469 return rc;
1470}
1471
1472/******************************************************************************
1473 *
1474 * EEPROM related functions
1475 *
1476 ******************************************************************************/
1477
bb8c093b 1478static void get_eeprom_mac(struct iwl3945_priv *priv, u8 *mac)
b481de9c
ZY		 1479{
1480 memcpy(mac, priv->eeprom.mac_address, 6);
1481}
1482
74a3a250
RC		 1483/*
1484 * Clear the OWNER_MSK, to establish driver (instead of uCode running on
1485 * embedded controller) as EEPROM reader; each read is a series of pulses
1486 * to/from the EEPROM chip, not a single event, so even reads could conflict
1487 * if they weren't arbitrated by some ownership mechanism. Here, the driver
1488 * simply claims ownership, which should be safe when this function is called
1489 * (i.e. before loading uCode!).
1490 */
1491static inline int iwl3945_eeprom_acquire_semaphore(struct iwl3945_priv *priv)
1492{
1493 _iwl3945_clear_bit(priv, CSR_EEPROM_GP, CSR_EEPROM_GP_IF_OWNER_MSK);
1494 return 0;
1495}
1496
b481de9c 1497/**
bb8c093b 1498 * iwl3945_eeprom_init - read EEPROM contents
b481de9c 1499 *
6440adb5 1500 * Load the EEPROM contents from adapter into priv->eeprom
b481de9c
ZY		 1501 *
1502 * NOTE: This routine uses the non-debug IO access functions.
1503 */
bb8c093b 1504int iwl3945_eeprom_init(struct iwl3945_priv *priv)
b481de9c 1505{
58ff6d4d 1506 u16 *e = (u16 *)&priv->eeprom;
bb8c093b 1507 u32 gp = iwl3945_read32(priv, CSR_EEPROM_GP);
b481de9c
ZY		 1508 u32 r;
1509 int sz = sizeof(priv->eeprom);
1510 int rc;
1511 int i;
1512 u16 addr;
1513
1514 /* The EEPROM structure has several padding buffers within it
1515 * and when adding new EEPROM maps is subject to programmer errors
1516 * which may be very difficult to identify without explicitly
1517 * checking the resulting size of the eeprom map. */
1518 BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);
1519
1520 if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
6f147926 1521 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x\n", gp);
b481de9c
ZY		 1522 return -ENOENT;
1523 }
1524
6440adb5 1525 /* Make sure driver (instead of uCode) is allowed to read EEPROM */
bb8c093b 1526 rc = iwl3945_eeprom_acquire_semaphore(priv);
b481de9c 1527 if (rc < 0) {
91e17473 1528 IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
b481de9c
ZY		 1529 return -ENOENT;
1530 }
1531
1532 /* eeprom is an array of 16bit values */
1533 for (addr = 0; addr < sz; addr += sizeof(u16)) {
bb8c093b
CH		 1534 _iwl3945_write32(priv, CSR_EEPROM_REG, addr << 1);
1535 _iwl3945_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
b481de9c
ZY		 1536
1537 for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT;
1538 i += IWL_EEPROM_ACCESS_DELAY) {
bb8c093b 1539 r = _iwl3945_read_direct32(priv, CSR_EEPROM_REG);
b481de9c
ZY		 1540 if (r & CSR_EEPROM_REG_READ_VALID_MSK)
1541 break;
1542 udelay(IWL_EEPROM_ACCESS_DELAY);
1543 }
1544
1545 if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) {
6f147926 1546 IWL_ERROR("Time out reading EEPROM[%d]\n", addr);
b481de9c
ZY		 1547 return -ETIMEDOUT;
1548 }
58ff6d4d 1549 e[addr / 2] = le16_to_cpu((__force __le16)(r >> 16));
b481de9c
ZY		 1550 }
1551
1552 return 0;
1553}
1554
bb8c093b 1555static void iwl3945_unset_hw_setting(struct iwl3945_priv *priv)
b481de9c
ZY		 1556{
1557 if (priv->hw_setting.shared_virt)
1558 pci_free_consistent(priv->pci_dev,
bb8c093b 1559 sizeof(struct iwl3945_shared),
b481de9c
ZY		 1560 priv->hw_setting.shared_virt,
1561 priv->hw_setting.shared_phys);
1562}
1563
1564/**
bb8c093b 1565 * iwl3945_supported_rate_to_ie - fill in the supported rate in IE field
b481de9c
ZY		 1566 *
1567 * return : set the bit for each supported rate insert in ie
1568 */
bb8c093b 1569static u16 iwl3945_supported_rate_to_ie(u8 *ie, u16 supported_rate,
c7c46676 1570 u16 basic_rate, int *left)
b481de9c
ZY		 1571{
1572 u16 ret_rates = 0, bit;
1573 int i;
c7c46676
TW		 1574 u8 *cnt = ie;
1575 u8 *rates = ie + 1;
b481de9c
ZY		 1576
1577 for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1578 if (bit & supported_rate) {
1579 ret_rates |= bit;
bb8c093b 1580 rates[*cnt] = iwl3945_rates[i].ieee |
c7c46676
TW		 1581 ((bit & basic_rate) ? 0x80 : 0x00);
1582 (*cnt)++;
1583 (*left)--;
1584 if ((*left <= 0) ||
1585 (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
b481de9c
ZY		 1586 break;
1587 }
1588 }
1589
1590 return ret_rates;
1591}
1592
1593/**
bb8c093b 1594 * iwl3945_fill_probe_req - fill in all required fields and IE for probe request
b481de9c 1595 */
bb8c093b 1596static u16 iwl3945_fill_probe_req(struct iwl3945_priv *priv,
b481de9c 1597 struct ieee80211_mgmt *frame,
430cfe95 1598 int left)
b481de9c
ZY		 1599{
1600 int len = 0;
1601 u8 *pos = NULL;
c7c46676 1602 u16 active_rates, ret_rates, cck_rates;
b481de9c
ZY		 1603
1604 /* Make sure there is enough space for the probe request,
1605 * two mandatory IEs and the data */
1606 left -= 24;
1607 if (left < 0)
1608 return 0;
1609 len += 24;
1610
1611 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
bb8c093b 1612 memcpy(frame->da, iwl3945_broadcast_addr, ETH_ALEN);
b481de9c 1613 memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
bb8c093b 1614 memcpy(frame->bssid, iwl3945_broadcast_addr, ETH_ALEN);
b481de9c
ZY		 1615 frame->seq_ctrl = 0;
1616
1617 /* fill in our indirect SSID IE */
1618 /* ...next IE... */
1619
1620 left -= 2;
1621 if (left < 0)
1622 return 0;
1623 len += 2;
1624 pos = &(frame->u.probe_req.variable[0]);
1625 *pos++ = WLAN_EID_SSID;
1626 *pos++ = 0;
1627
b481de9c
ZY		 1628 /* fill in supported rate */
1629 /* ...next IE... */
1630 left -= 2;
1631 if (left < 0)
1632 return 0;
c7c46676 1633
b481de9c
ZY		 1634 /* ... fill it in... */
1635 *pos++ = WLAN_EID_SUPP_RATES;
1636 *pos = 0;
c7c46676
TW		 1637
1638 priv->active_rate = priv->rates_mask;
1639 active_rates = priv->active_rate;
b481de9c
ZY		 1640 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1641
c7c46676 1642 cck_rates = IWL_CCK_RATES_MASK & active_rates;
bb8c093b 1643 ret_rates = iwl3945_supported_rate_to_ie(pos, cck_rates,
c7c46676
TW		 1644 priv->active_rate_basic, &left);
1645 active_rates &= ~ret_rates;
1646
bb8c093b 1647 ret_rates = iwl3945_supported_rate_to_ie(pos, active_rates,
c7c46676
TW		 1648 priv->active_rate_basic, &left);
1649 active_rates &= ~ret_rates;
1650
b481de9c
ZY		 1651 len += 2 + *pos;
1652 pos += (*pos) + 1;
c7c46676 1653 if (active_rates == 0)
b481de9c
ZY		 1654 goto fill_end;
1655
1656 /* fill in supported extended rate */
1657 /* ...next IE... */
1658 left -= 2;
1659 if (left < 0)
1660 return 0;
1661 /* ... fill it in... */
1662 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1663 *pos = 0;
bb8c093b 1664 iwl3945_supported_rate_to_ie(pos, active_rates,
c7c46676 1665 priv->active_rate_basic, &left);
b481de9c
ZY		 1666 if (*pos > 0)
1667 len += 2 + *pos;
1668
1669 fill_end:
1670 return (u16)len;
1671}
1672
1673/*
1674 * QoS support
1675*/
bb8c093b
CH		 1676static int iwl3945_send_qos_params_command(struct iwl3945_priv *priv,
1677 struct iwl3945_qosparam_cmd *qos)
b481de9c
ZY		 1678{
1679
bb8c093b
CH		 1680 return iwl3945_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1681 sizeof(struct iwl3945_qosparam_cmd), qos);
b481de9c
ZY		 1682}
1683
bb8c093b 1684static void iwl3945_reset_qos(struct iwl3945_priv *priv)
b481de9c
ZY		 1685{
1686 u16 cw_min = 15;
1687 u16 cw_max = 1023;
1688 u8 aifs = 2;
1689 u8 is_legacy = 0;
1690 unsigned long flags;
1691 int i;
1692
1693 spin_lock_irqsave(&priv->lock, flags);
1694 priv->qos_data.qos_active = 0;
1695
05c914fe 1696 if (priv->iw_mode == NL80211_IFTYPE_ADHOC) {
b481de9c
ZY		 1697 if (priv->qos_data.qos_enable)
1698 priv->qos_data.qos_active = 1;
1699 if (!(priv->active_rate & 0xfff0)) {
1700 cw_min = 31;
1701 is_legacy = 1;
1702 }
05c914fe 1703 } else if (priv->iw_mode == NL80211_IFTYPE_AP) {
b481de9c
ZY		 1704 if (priv->qos_data.qos_enable)
1705 priv->qos_data.qos_active = 1;
1706 } else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
1707 cw_min = 31;
1708 is_legacy = 1;
1709 }
1710
1711 if (priv->qos_data.qos_active)
1712 aifs = 3;
1713
1714 priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
1715 priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
1716 priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
1717 priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
1718 priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
1719
1720 if (priv->qos_data.qos_active) {
1721 i = 1;
1722 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
1723 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
1724 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
1725 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1726 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1727
1728 i = 2;
1729 priv->qos_data.def_qos_parm.ac[i].cw_min =
1730 cpu_to_le16((cw_min + 1) / 2 - 1);
1731 priv->qos_data.def_qos_parm.ac[i].cw_max =
1732 cpu_to_le16(cw_max);
1733 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1734 if (is_legacy)
1735 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1736 cpu_to_le16(6016);
1737 else
1738 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1739 cpu_to_le16(3008);
1740 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1741
1742 i = 3;
1743 priv->qos_data.def_qos_parm.ac[i].cw_min =
1744 cpu_to_le16((cw_min + 1) / 4 - 1);
1745 priv->qos_data.def_qos_parm.ac[i].cw_max =
1746 cpu_to_le16((cw_max + 1) / 2 - 1);
1747 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1748 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1749 if (is_legacy)
1750 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1751 cpu_to_le16(3264);
1752 else
1753 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1754 cpu_to_le16(1504);
1755 } else {
1756 for (i = 1; i < 4; i++) {
1757 priv->qos_data.def_qos_parm.ac[i].cw_min =
1758 cpu_to_le16(cw_min);
1759 priv->qos_data.def_qos_parm.ac[i].cw_max =
1760 cpu_to_le16(cw_max);
1761 priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
1762 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1763 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1764 }
1765 }
1766 IWL_DEBUG_QOS("set QoS to default \n");
1767
1768 spin_unlock_irqrestore(&priv->lock, flags);
1769}
1770
bb8c093b 1771static void iwl3945_activate_qos(struct iwl3945_priv *priv, u8 force)
b481de9c
ZY		 1772{
1773 unsigned long flags;
1774
b481de9c
ZY		 1775 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1776 return;
1777
1778 if (!priv->qos_data.qos_enable)
1779 return;
1780
1781 spin_lock_irqsave(&priv->lock, flags);
1782 priv->qos_data.def_qos_parm.qos_flags = 0;
1783
1784 if (priv->qos_data.qos_cap.q_AP.queue_request &&
1785 !priv->qos_data.qos_cap.q_AP.txop_request)
1786 priv->qos_data.def_qos_parm.qos_flags |=
1787 QOS_PARAM_FLG_TXOP_TYPE_MSK;
1788
1789 if (priv->qos_data.qos_active)
1790 priv->qos_data.def_qos_parm.qos_flags |=
1791 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
1792
1793 spin_unlock_irqrestore(&priv->lock, flags);
1794
bb8c093b 1795 if (force || iwl3945_is_associated(priv)) {
a96a27f9 1796 IWL_DEBUG_QOS("send QoS cmd with QoS active %d \n",
b481de9c
ZY		 1797 priv->qos_data.qos_active);
1798
bb8c093b 1799 iwl3945_send_qos_params_command(priv,
b481de9c
ZY		 1800 &(priv->qos_data.def_qos_parm));
1801 }
1802}
1803
b481de9c
ZY		 1804/*
1805 * Power management (not Tx power!) functions
1806 */
1807#define MSEC_TO_USEC 1024
1808
1809#define NOSLP __constant_cpu_to_le32(0)
1810#define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK
1811#define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
1812#define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
1813 __constant_cpu_to_le32(X1), \
1814 __constant_cpu_to_le32(X2), \
1815 __constant_cpu_to_le32(X3), \
1816 __constant_cpu_to_le32(X4)}
1817
1818
1819/* default power management (not Tx power) table values */
a96a27f9 1820/* for TIM 0-10 */
bb8c093b 1821static struct iwl3945_power_vec_entry range_0[IWL_POWER_AC] = {
b481de9c
ZY		 1822 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1823 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
1824 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
1825 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
1826 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
1827 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
1828};
1829
a96a27f9 1830/* for TIM > 10 */
bb8c093b 1831static struct iwl3945_power_vec_entry range_1[IWL_POWER_AC] = {
b481de9c
ZY		 1832 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1833 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
1834 SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
1835 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
1836 SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
1837 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
1838 SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
1839 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
1840 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
1841 SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
1842};
1843
bb8c093b 1844int iwl3945_power_init_handle(struct iwl3945_priv *priv)
b481de9c
ZY		 1845{
1846 int rc = 0, i;
bb8c093b
CH		 1847 struct iwl3945_power_mgr *pow_data;
1848 int size = sizeof(struct iwl3945_power_vec_entry) * IWL_POWER_AC;
b481de9c
ZY		 1849 u16 pci_pm;
1850
1851 IWL_DEBUG_POWER("Initialize power \n");
1852
1853 pow_data = &(priv->power_data);
1854
1855 memset(pow_data, 0, sizeof(*pow_data));
1856
1857 pow_data->active_index = IWL_POWER_RANGE_0;
1858 pow_data->dtim_val = 0xffff;
1859
1860 memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
1861 memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
1862
1863 rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
1864 if (rc != 0)
1865 return 0;
1866 else {
bb8c093b 1867 struct iwl3945_powertable_cmd *cmd;
b481de9c
ZY		 1868
1869 IWL_DEBUG_POWER("adjust power command flags\n");
1870
1871 for (i = 0; i < IWL_POWER_AC; i++) {
1872 cmd = &pow_data->pwr_range_0[i].cmd;
1873
1874 if (pci_pm & 0x1)
1875 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
1876 else
1877 cmd->flags |= IWL_POWER_PCI_PM_MSK;
1878 }
1879 }
1880 return rc;
1881}
1882
bb8c093b
CH		 1883static int iwl3945_update_power_cmd(struct iwl3945_priv *priv,
1884 struct iwl3945_powertable_cmd *cmd, u32 mode)
b481de9c
ZY		 1885{
1886 int rc = 0, i;
1887 u8 skip;
1888 u32 max_sleep = 0;
bb8c093b 1889 struct iwl3945_power_vec_entry *range;
b481de9c 1890 u8 period = 0;
bb8c093b 1891 struct iwl3945_power_mgr *pow_data;
b481de9c
ZY		 1892
1893 if (mode > IWL_POWER_INDEX_5) {
1894 IWL_DEBUG_POWER("Error invalid power mode \n");
1895 return -1;
1896 }
1897 pow_data = &(priv->power_data);
1898
1899 if (pow_data->active_index == IWL_POWER_RANGE_0)
1900 range = &pow_data->pwr_range_0[0];
1901 else
1902 range = &pow_data->pwr_range_1[1];
1903
bb8c093b 1904 memcpy(cmd, &range[mode].cmd, sizeof(struct iwl3945_powertable_cmd));
b481de9c
ZY		 1905
1906#ifdef IWL_MAC80211_DISABLE
1907 if (priv->assoc_network != NULL) {
1908 unsigned long flags;
1909
1910 period = priv->assoc_network->tim.tim_period;
1911 }
1912#endif /*IWL_MAC80211_DISABLE */
1913 skip = range[mode].no_dtim;
1914
1915 if (period == 0) {
1916 period = 1;
1917 skip = 0;
1918 }
1919
1920 if (skip == 0) {
1921 max_sleep = period;
1922 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
1923 } else {
1924 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
1925 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
1926 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
1927 }
1928
1929 for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
1930 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
1931 cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
1932 }
1933
1934 IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
1935 IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
1936 IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
1937 IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
1938 le32_to_cpu(cmd->sleep_interval[0]),
1939 le32_to_cpu(cmd->sleep_interval[1]),
1940 le32_to_cpu(cmd->sleep_interval[2]),
1941 le32_to_cpu(cmd->sleep_interval[3]),
1942 le32_to_cpu(cmd->sleep_interval[4]));
1943
1944 return rc;
1945}
1946
bb8c093b 1947static int iwl3945_send_power_mode(struct iwl3945_priv *priv, u32 mode)
b481de9c 1948{
9a62f73b 1949 u32 uninitialized_var(final_mode);
b481de9c 1950 int rc;
bb8c093b 1951 struct iwl3945_powertable_cmd cmd;
b481de9c
ZY		 1952
1953 /* If on battery, set to 3,
01ebd063 1954 * if plugged into AC power, set to CAM ("continuously aware mode"),
b481de9c
ZY		 1955 * else user level */
1956 switch (mode) {
1957 case IWL_POWER_BATTERY:
1958 final_mode = IWL_POWER_INDEX_3;
1959 break;
1960 case IWL_POWER_AC:
1961 final_mode = IWL_POWER_MODE_CAM;
1962 break;
1963 default:
1964 final_mode = mode;
1965 break;
1966 }
1967
bb8c093b 1968 iwl3945_update_power_cmd(priv, &cmd, final_mode);
b481de9c 1969
bb8c093b 1970 rc = iwl3945_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
b481de9c
ZY		 1971
1972 if (final_mode == IWL_POWER_MODE_CAM)
1973 clear_bit(STATUS_POWER_PMI, &priv->status);
1974 else
1975 set_bit(STATUS_POWER_PMI, &priv->status);
1976
1977 return rc;
1978}
1979
b481de9c 1980/**
bb8c093b 1981 * iwl3945_scan_cancel - Cancel any currently executing HW scan
b481de9c
ZY		 1982 *
1983 * NOTE: priv->mutex is not required before calling this function
1984 */
bb8c093b 1985static int iwl3945_scan_cancel(struct iwl3945_priv *priv)
b481de9c
ZY		 1986{
1987 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1988 clear_bit(STATUS_SCANNING, &priv->status);
1989 return 0;
1990 }
1991
1992 if (test_bit(STATUS_SCANNING, &priv->status)) {
1993 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1994 IWL_DEBUG_SCAN("Queuing scan abort.\n");
1995 set_bit(STATUS_SCAN_ABORTING, &priv->status);
1996 queue_work(priv->workqueue, &priv->abort_scan);
1997
1998 } else
1999 IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2000
2001 return test_bit(STATUS_SCANNING, &priv->status);
2002 }
2003
2004 return 0;
2005}
2006
2007/**
bb8c093b 2008 * iwl3945_scan_cancel_timeout - Cancel any currently executing HW scan
b481de9c
ZY		 2009 * @ms: amount of time to wait (in milliseconds) for scan to abort
2010 *
2011 * NOTE: priv->mutex must be held before calling this function
2012 */
bb8c093b 2013static int iwl3945_scan_cancel_timeout(struct iwl3945_priv *priv, unsigned long ms)
b481de9c
ZY		 2014{
2015 unsigned long now = jiffies;
2016 int ret;
2017
bb8c093b 2018 ret = iwl3945_scan_cancel(priv);
b481de9c
ZY		 2019 if (ret && ms) {
2020 mutex_unlock(&priv->mutex);
2021 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
2022 test_bit(STATUS_SCANNING, &priv->status))
2023 msleep(1);
2024 mutex_lock(&priv->mutex);
2025
2026 return test_bit(STATUS_SCANNING, &priv->status);
2027 }
2028
2029 return ret;
2030}
2031
b481de9c
ZY		 2032#define MAX_UCODE_BEACON_INTERVAL 1024
2033#define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
2034
bb8c093b 2035static __le16 iwl3945_adjust_beacon_interval(u16 beacon_val)
b481de9c
ZY		 2036{
2037 u16 new_val = 0;
2038 u16 beacon_factor = 0;
2039
2040 beacon_factor =
2041 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
2042 / MAX_UCODE_BEACON_INTERVAL;
2043 new_val = beacon_val / beacon_factor;
2044
2045 return cpu_to_le16(new_val);
2046}
2047
bb8c093b 2048static void iwl3945_setup_rxon_timing(struct iwl3945_priv *priv)
b481de9c
ZY		 2049{
2050 u64 interval_tm_unit;
2051 u64 tsf, result;
2052 unsigned long flags;
2053 struct ieee80211_conf *conf = NULL;
2054 u16 beacon_int = 0;
2055
2056 conf = ieee80211_get_hw_conf(priv->hw);
2057
2058 spin_lock_irqsave(&priv->lock, flags);
2059 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
2060 priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);
2061
2062 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
2063
2064 tsf = priv->timestamp1;
2065 tsf = ((tsf << 32) | priv->timestamp0);
2066
2067 beacon_int = priv->beacon_int;
2068 spin_unlock_irqrestore(&priv->lock, flags);
2069
05c914fe 2070 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
b481de9c
ZY		 2071 if (beacon_int == 0) {
2072 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
2073 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
2074 } else {
2075 priv->rxon_timing.beacon_interval =
2076 cpu_to_le16(beacon_int);
2077 priv->rxon_timing.beacon_interval =
bb8c093b 2078 iwl3945_adjust_beacon_interval(
b481de9c
ZY		 2079 le16_to_cpu(priv->rxon_timing.beacon_interval));
2080 }
2081
2082 priv->rxon_timing.atim_window = 0;
2083 } else {
2084 priv->rxon_timing.beacon_interval =
bb8c093b 2085 iwl3945_adjust_beacon_interval(conf->beacon_int);
b481de9c
ZY		 2086 /* TODO: we need to get atim_window from upper stack
2087 * for now we set to 0 */
2088 priv->rxon_timing.atim_window = 0;
2089 }
2090
2091 interval_tm_unit =
2092 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2093 result = do_div(tsf, interval_tm_unit);
2094 priv->rxon_timing.beacon_init_val =
2095 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2096
2097 IWL_DEBUG_ASSOC
2098 ("beacon interval %d beacon timer %d beacon tim %d\n",
2099 le16_to_cpu(priv->rxon_timing.beacon_interval),
2100 le32_to_cpu(priv->rxon_timing.beacon_init_val),
2101 le16_to_cpu(priv->rxon_timing.atim_window));
2102}
2103
bb8c093b 2104static int iwl3945_scan_initiate(struct iwl3945_priv *priv)
b481de9c 2105{
05c914fe 2106 if (priv->iw_mode == NL80211_IFTYPE_AP) {
b481de9c
ZY		 2107 IWL_ERROR("APs don't scan.\n");
2108 return 0;
2109 }
2110
bb8c093b 2111 if (!iwl3945_is_ready_rf(priv)) {
b481de9c
ZY		 2112 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2113 return -EIO;
2114 }
2115
2116 if (test_bit(STATUS_SCANNING, &priv->status)) {
2117 IWL_DEBUG_SCAN("Scan already in progress.\n");
2118 return -EAGAIN;
2119 }
2120
2121 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2122 IWL_DEBUG_SCAN("Scan request while abort pending. "
2123 "Queuing.\n");
2124 return -EAGAIN;
2125 }
2126
2127 IWL_DEBUG_INFO("Starting scan...\n");
66b5004d
RR		 2128 if (priv->cfg->sku & IWL_SKU_G)
2129 priv->scan_bands |= BIT(IEEE80211_BAND_2GHZ);
2130 if (priv->cfg->sku & IWL_SKU_A)
2131 priv->scan_bands |= BIT(IEEE80211_BAND_5GHZ);
b481de9c
ZY		 2132 set_bit(STATUS_SCANNING, &priv->status);
2133 priv->scan_start = jiffies;
2134 priv->scan_pass_start = priv->scan_start;
2135
2136 queue_work(priv->workqueue, &priv->request_scan);
2137
2138 return 0;
2139}
2140
bb8c093b 2141static int iwl3945_set_rxon_hwcrypto(struct iwl3945_priv *priv, int hw_decrypt)
b481de9c 2142{
bb8c093b 2143 struct iwl3945_rxon_cmd *rxon = &priv->staging_rxon;
b481de9c
ZY		 2144
2145 if (hw_decrypt)
2146 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2147 else
2148 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2149
2150 return 0;
2151}
2152
8318d78a
JB		 2153static void iwl3945_set_flags_for_phymode(struct iwl3945_priv *priv,
2154 enum ieee80211_band band)
b481de9c 2155{
8318d78a 2156 if (band == IEEE80211_BAND_5GHZ) {
b481de9c
ZY		 2157 priv->staging_rxon.flags &=
2158 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2159 | RXON_FLG_CCK_MSK);
2160 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2161 } else {
bb8c093b 2162 /* Copied from iwl3945_bg_post_associate() */
b481de9c
ZY		 2163 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2164 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2165 else
2166 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2167
05c914fe 2168 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
b481de9c
ZY		 2169 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2170
2171 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2172 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2173 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2174 }
2175}
2176
2177/*
01ebd063 2178 * initialize rxon structure with default values from eeprom
b481de9c 2179 */
60294de3
ZY		 2180static void iwl3945_connection_init_rx_config(struct iwl3945_priv *priv,
2181 int mode)
b481de9c 2182{
bb8c093b 2183 const struct iwl3945_channel_info *ch_info;
b481de9c
ZY		 2184
2185 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2186
60294de3 2187 switch (mode) {
05c914fe 2188 case NL80211_IFTYPE_AP:
b481de9c
ZY		 2189 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2190 break;
2191
05c914fe 2192 case NL80211_IFTYPE_STATION:
b481de9c
ZY		 2193 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2194 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2195 break;
2196
05c914fe 2197 case NL80211_IFTYPE_ADHOC:
b481de9c
ZY		 2198 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2199 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2200 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2201 RXON_FILTER_ACCEPT_GRP_MSK;
2202 break;
2203
05c914fe 2204 case NL80211_IFTYPE_MONITOR:
b481de9c
ZY		 2205 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2206 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2207 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2208 break;
69dc5d9d 2209 default:
60294de3 2210 IWL_ERROR("Unsupported interface type %d\n", mode);
69dc5d9d 2211 break;
b481de9c
ZY		 2212 }
2213
2214#if 0
2215 /* TODO: Figure out when short_preamble would be set and cache from
2216 * that */
2217 if (!hw_to_local(priv->hw)->short_preamble)
2218 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2219 else
2220 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2221#endif
2222
8318d78a 2223 ch_info = iwl3945_get_channel_info(priv, priv->band,
25b3f57c 2224 le16_to_cpu(priv->active_rxon.channel));
b481de9c
ZY		 2225
2226 if (!ch_info)
2227 ch_info = &priv->channel_info[0];
2228
2229 /*
2230 * in some case A channels are all non IBSS
2231 * in this case force B/G channel
2232 */
60294de3 2233 if ((mode == NL80211_IFTYPE_ADHOC) && !(is_channel_ibss(ch_info)))
b481de9c
ZY		 2234 ch_info = &priv->channel_info[0];
2235
2236 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2237 if (is_channel_a_band(ch_info))
8318d78a 2238 priv->band = IEEE80211_BAND_5GHZ;
b481de9c 2239 else
8318d78a 2240 priv->band = IEEE80211_BAND_2GHZ;
b481de9c 2241
8318d78a 2242 iwl3945_set_flags_for_phymode(priv, priv->band);
b481de9c
ZY		 2243
2244 priv->staging_rxon.ofdm_basic_rates =
2245 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2246 priv->staging_rxon.cck_basic_rates =
2247 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2248}
2249
bb8c093b 2250static int iwl3945_set_mode(struct iwl3945_priv *priv, int mode)
b481de9c 2251{
05c914fe 2252 if (mode == NL80211_IFTYPE_ADHOC) {
bb8c093b 2253 const struct iwl3945_channel_info *ch_info;
b481de9c 2254
bb8c093b 2255 ch_info = iwl3945_get_channel_info(priv,
8318d78a 2256 priv->band,
b481de9c
ZY		 2257 le16_to_cpu(priv->staging_rxon.channel));
2258
2259 if (!ch_info || !is_channel_ibss(ch_info)) {
2260 IWL_ERROR("channel %d not IBSS channel\n",
2261 le16_to_cpu(priv->staging_rxon.channel));
2262 return -EINVAL;
2263 }
2264 }
2265
60294de3 2266 iwl3945_connection_init_rx_config(priv, mode);
b481de9c
ZY		 2267 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2268
bb8c093b 2269 iwl3945_clear_stations_table(priv);
b481de9c 2270
a96a27f9 2271 /* don't commit rxon if rf-kill is on*/
fde3571f
MA		 2272 if (!iwl3945_is_ready_rf(priv))
2273 return -EAGAIN;
2274
2275 cancel_delayed_work(&priv->scan_check);
2276 if (iwl3945_scan_cancel_timeout(priv, 100)) {
2277 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2278 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2279 return -EAGAIN;
2280 }
2281
bb8c093b 2282 iwl3945_commit_rxon(priv);
b481de9c
ZY		 2283
2284 return 0;
2285}
2286
bb8c093b 2287static void iwl3945_build_tx_cmd_hwcrypto(struct iwl3945_priv *priv,
e039fa4a 2288 struct ieee80211_tx_info *info,
bb8c093b 2289 struct iwl3945_cmd *cmd,
b481de9c
ZY		 2290 struct sk_buff *skb_frag,
2291 int last_frag)
2292{
1c014420 2293 struct iwl3945_hw_key *keyinfo =
e039fa4a 2294 &priv->stations[info->control.hw_key->hw_key_idx].keyinfo;
b481de9c
ZY		 2295
2296 switch (keyinfo->alg) {
2297 case ALG_CCMP:
2298 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2299 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
a96a27f9 2300 IWL_DEBUG_TX("tx_cmd with AES hwcrypto\n");
b481de9c
ZY		 2301 break;
2302
2303 case ALG_TKIP:
2304#if 0
2305 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2306
2307 if (last_frag)
2308 memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2309 8);
2310 else
2311 memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2312#endif
2313 break;
2314
2315 case ALG_WEP:
2316 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
e039fa4a 2317 (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
b481de9c
ZY		 2318
2319 if (keyinfo->keylen == 13)
2320 cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2321
2322 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2323
2324 IWL_DEBUG_TX("Configuring packet for WEP encryption "
e039fa4a 2325 "with key %d\n", info->control.hw_key->hw_key_idx);
b481de9c
ZY		 2326 break;
2327
b481de9c
ZY		 2328 default:
2329 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2330 break;
2331 }
2332}
2333
2334/*
2335 * handle build REPLY_TX command notification.
2336 */
bb8c093b
CH		 2337static void iwl3945_build_tx_cmd_basic(struct iwl3945_priv *priv,
2338 struct iwl3945_cmd *cmd,
e039fa4a 2339 struct ieee80211_tx_info *info,
b481de9c
ZY		 2340 struct ieee80211_hdr *hdr,
2341 int is_unicast, u8 std_id)
2342{
fd7c8a40 2343 __le16 fc = hdr->frame_control;
b481de9c 2344 __le32 tx_flags = cmd->cmd.tx.tx_flags;
e6a9854b 2345 u8 rc_flags = info->control.rates[0].flags;
b481de9c
ZY		 2346
2347 cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
e039fa4a 2348 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
b481de9c 2349 tx_flags |= TX_CMD_FLG_ACK_MSK;
fd7c8a40 2350 if (ieee80211_is_mgmt(fc))
b481de9c 2351 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
fd7c8a40 2352 if (ieee80211_is_probe_resp(fc) &&
b481de9c
ZY		 2353 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2354 tx_flags |= TX_CMD_FLG_TSF_MSK;
2355 } else {
2356 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2357 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2358 }
2359
2360 cmd->cmd.tx.sta_id = std_id;
8b7b1e05 2361 if (ieee80211_has_morefrags(fc))
b481de9c
ZY		 2362 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2363
fd7c8a40
HH		 2364 if (ieee80211_is_data_qos(fc)) {
2365 u8 *qc = ieee80211_get_qos_ctl(hdr);
54dbb525 2366 cmd->cmd.tx.tid_tspec = qc[0] & 0xf;
b481de9c 2367 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
54dbb525 2368 } else {
b481de9c 2369 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
54dbb525 2370 }
b481de9c 2371
e6a9854b 2372 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
b481de9c
ZY		 2373 tx_flags |= TX_CMD_FLG_RTS_MSK;
2374 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
e6a9854b 2375 } else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
b481de9c
ZY		 2376 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2377 tx_flags |= TX_CMD_FLG_CTS_MSK;
2378 }
2379
2380 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2381 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2382
2383 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
fd7c8a40
HH		 2384 if (ieee80211_is_mgmt(fc)) {
2385 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
bc434dd2 2386 cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
b481de9c 2387 else
bc434dd2 2388 cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
ab53d8af 2389 } else {
b481de9c 2390 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
ab53d8af
MA		 2391#ifdef CONFIG_IWL3945_LEDS
2392 priv->rxtxpackets += le16_to_cpu(cmd->cmd.tx.len);
2393#endif
2394 }
b481de9c
ZY		 2395
2396 cmd->cmd.tx.driver_txop = 0;
2397 cmd->cmd.tx.tx_flags = tx_flags;
2398 cmd->cmd.tx.next_frame_len = 0;
2399}
2400
6440adb5
CB		 2401/**
2402 * iwl3945_get_sta_id - Find station's index within station table
2403 */
bb8c093b 2404static int iwl3945_get_sta_id(struct iwl3945_priv *priv, struct ieee80211_hdr *hdr)
b481de9c
ZY		 2405{
2406 int sta_id;
2407 u16 fc = le16_to_cpu(hdr->frame_control);
2408
6440adb5 2409 /* If this frame is broadcast or management, use broadcast station id */
b481de9c
ZY		 2410 if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2411 is_multicast_ether_addr(hdr->addr1))
2412 return priv->hw_setting.bcast_sta_id;
2413
2414 switch (priv->iw_mode) {
2415
6440adb5
CB		 2416 /* If we are a client station in a BSS network, use the special
2417 * AP station entry (that's the only station we communicate with) */
05c914fe 2418 case NL80211_IFTYPE_STATION:
b481de9c
ZY		 2419 return IWL_AP_ID;
2420
2421 /* If we are an AP, then find the station, or use BCAST */
05c914fe 2422 case NL80211_IFTYPE_AP:
bb8c093b 2423 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
b481de9c
ZY		 2424 if (sta_id != IWL_INVALID_STATION)
2425 return sta_id;
2426 return priv->hw_setting.bcast_sta_id;
2427
6440adb5
CB		 2428 /* If this frame is going out to an IBSS network, find the station,
2429 * or create a new station table entry */
05c914fe 2430 case NL80211_IFTYPE_ADHOC: {
6440adb5 2431 /* Create new station table entry */
bb8c093b 2432 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
b481de9c
ZY		 2433 if (sta_id != IWL_INVALID_STATION)
2434 return sta_id;
2435
bb8c093b 2436 sta_id = iwl3945_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
b481de9c
ZY		 2437
2438 if (sta_id != IWL_INVALID_STATION)
2439 return sta_id;
2440
e174961c 2441 IWL_DEBUG_DROP("Station %pM not in station map. "
b481de9c 2442 "Defaulting to broadcast...\n",
e174961c 2443 hdr->addr1);
bb8c093b 2444 iwl3945_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
b481de9c 2445 return priv->hw_setting.bcast_sta_id;
0795af57 2446 }
914233d6
SG		 2447 /* If we are in monitor mode, use BCAST. This is required for
2448 * packet injection. */
05c914fe 2449 case NL80211_IFTYPE_MONITOR:
914233d6
SG		 2450 return priv->hw_setting.bcast_sta_id;
2451
b481de9c 2452 default:
6f147926 2453 IWL_WARNING("Unknown mode of operation: %d\n", priv->iw_mode);
b481de9c
ZY		 2454 return priv->hw_setting.bcast_sta_id;
2455 }
2456}
2457
2458/*
2459 * start REPLY_TX command process
2460 */
e039fa4a 2461static int iwl3945_tx_skb(struct iwl3945_priv *priv, struct sk_buff *skb)
b481de9c
ZY		 2462{
2463 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
e039fa4a 2464 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
bb8c093b 2465 struct iwl3945_tfd_frame *tfd;
b481de9c 2466 u32 *control_flags;
e2530083 2467 int txq_id = skb_get_queue_mapping(skb);
bb8c093b
CH		 2468 struct iwl3945_tx_queue *txq = NULL;
2469 struct iwl3945_queue *q = NULL;
b481de9c
ZY		 2470 dma_addr_t phys_addr;
2471 dma_addr_t txcmd_phys;
bb8c093b 2472 struct iwl3945_cmd *out_cmd = NULL;
54dbb525
TW		 2473 u16 len, idx, len_org, hdr_len;
2474 u8 id;
2475 u8 unicast;
b481de9c 2476 u8 sta_id;
54dbb525 2477 u8 tid = 0;
b481de9c 2478 u16 seq_number = 0;
fd7c8a40 2479 __le16 fc;
b481de9c 2480 u8 wait_write_ptr = 0;
54dbb525 2481 u8 *qc = NULL;
b481de9c
ZY		 2482 unsigned long flags;
2483 int rc;
2484
2485 spin_lock_irqsave(&priv->lock, flags);
bb8c093b 2486 if (iwl3945_is_rfkill(priv)) {
b481de9c
ZY		 2487 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2488 goto drop_unlock;
2489 }
2490
e039fa4a 2491 if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
b481de9c
ZY		 2492 IWL_ERROR("ERROR: No TX rate available.\n");
2493 goto drop_unlock;
2494 }
2495
2496 unicast = !is_multicast_ether_addr(hdr->addr1);
2497 id = 0;
2498
fd7c8a40 2499 fc = hdr->frame_control;
b481de9c 2500
c8b0e6e1 2501#ifdef CONFIG_IWL3945_DEBUG
b481de9c
ZY		 2502 if (ieee80211_is_auth(fc))
2503 IWL_DEBUG_TX("Sending AUTH frame\n");
fd7c8a40 2504 else if (ieee80211_is_assoc_req(fc))
b481de9c 2505 IWL_DEBUG_TX("Sending ASSOC frame\n");
fd7c8a40 2506 else if (ieee80211_is_reassoc_req(fc))
b481de9c
ZY		 2507 IWL_DEBUG_TX("Sending REASSOC frame\n");
2508#endif
2509
7878a5a4 2510 /* drop all data frame if we are not associated */
914233d6 2511 if (ieee80211_is_data(fc) &&
05c914fe 2512 (priv->iw_mode != NL80211_IFTYPE_MONITOR) && /* packet injection */
914233d6 2513 (!iwl3945_is_associated(priv) ||
05c914fe 2514 ((priv->iw_mode == NL80211_IFTYPE_STATION) && !priv->assoc_id))) {
bb8c093b 2515 IWL_DEBUG_DROP("Dropping - !iwl3945_is_associated\n");
b481de9c
ZY		 2516 goto drop_unlock;
2517 }
2518
2519 spin_unlock_irqrestore(&priv->lock, flags);
2520
7294ec95 2521 hdr_len = ieee80211_hdrlen(fc);
6440adb5
CB		 2522
2523 /* Find (or create) index into station table for destination station */
bb8c093b 2524 sta_id = iwl3945_get_sta_id(priv, hdr);
b481de9c 2525 if (sta_id == IWL_INVALID_STATION) {
e174961c
JB		 2526 IWL_DEBUG_DROP("Dropping - INVALID STATION: %pM\n",
2527 hdr->addr1);
b481de9c
ZY		 2528 goto drop;
2529 }
2530
2531 IWL_DEBUG_RATE("station Id %d\n", sta_id);
2532
fd7c8a40
HH		 2533 if (ieee80211_is_data_qos(fc)) {
2534 qc = ieee80211_get_qos_ctl(hdr);
7294ec95 2535 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
b481de9c
ZY		 2536 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2537 IEEE80211_SCTL_SEQ;
2538 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2539 (hdr->seq_ctrl &
2540 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2541 seq_number += 0x10;
2542 }
6440adb5
CB		 2543
2544 /* Descriptor for chosen Tx queue */
b481de9c
ZY		 2545 txq = &priv->txq[txq_id];
2546 q = &txq->q;
2547
2548 spin_lock_irqsave(&priv->lock, flags);
2549
6440adb5 2550 /* Set up first empty TFD within this queue's circular TFD buffer */
fc4b6853 2551 tfd = &txq->bd[q->write_ptr];
b481de9c
ZY		 2552 memset(tfd, 0, sizeof(*tfd));
2553 control_flags = (u32 *) tfd;
fc4b6853 2554 idx = get_cmd_index(q, q->write_ptr, 0);
b481de9c 2555
6440adb5 2556 /* Set up driver data for this TFD */
bb8c093b 2557 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl3945_tx_info));
fc4b6853 2558 txq->txb[q->write_ptr].skb[0] = skb;
6440adb5
CB		 2559
2560 /* Init first empty entry in queue's array of Tx/cmd buffers */
b481de9c
ZY		 2561 out_cmd = &txq->cmd[idx];
2562 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2563 memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
6440adb5
CB		 2564
2565 /*
2566 * Set up the Tx-command (not MAC!) header.
2567 * Store the chosen Tx queue and TFD index within the sequence field;
2568 * after Tx, uCode's Tx response will return this value so driver can
2569 * locate the frame within the tx queue and do post-tx processing.
2570 */
b481de9c
ZY		 2571 out_cmd->hdr.cmd = REPLY_TX;
2572 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
fc4b6853 2573 INDEX_TO_SEQ(q->write_ptr)));
6440adb5
CB		 2574
2575 /* Copy MAC header from skb into command buffer */
b481de9c
ZY		 2576 memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2577
6440adb5
CB		 2578 /*
2579 * Use the first empty entry in this queue's command buffer array
2580 * to contain the Tx command and MAC header concatenated together
2581 * (payload data will be in another buffer).
2582 * Size of this varies, due to varying MAC header length.
2583 * If end is not dword aligned, we'll have 2 extra bytes at the end
2584 * of the MAC header (device reads on dword boundaries).
2585 * We'll tell device about this padding later.
2586 */
b481de9c 2587 len = priv->hw_setting.tx_cmd_len +
bb8c093b 2588 sizeof(struct iwl3945_cmd_header) + hdr_len;
b481de9c
ZY		 2589
2590 len_org = len;
2591 len = (len + 3) & ~3;
2592
2593 if (len_org != len)
2594 len_org = 1;
2595 else
2596 len_org = 0;
2597
6440adb5
CB		 2598 /* Physical address of this Tx command's header (not MAC header!),
2599 * within command buffer array. */
bb8c093b
CH		 2600 txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl3945_cmd) * idx +
2601 offsetof(struct iwl3945_cmd, hdr);
b481de9c 2602
6440adb5
CB		 2603 /* Add buffer containing Tx command and MAC(!) header to TFD's
2604 * first entry */
bb8c093b 2605 iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
b481de9c 2606
d0f09804 2607 if (info->control.hw_key)
e039fa4a 2608 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, 0);
b481de9c 2609
6440adb5
CB		 2610 /* Set up TFD's 2nd entry to point directly to remainder of skb,
2611 * if any (802.11 null frames have no payload). */
b481de9c
ZY		 2612 len = skb->len - hdr_len;
2613 if (len) {
2614 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2615 len, PCI_DMA_TODEVICE);
bb8c093b 2616 iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
b481de9c
ZY		 2617 }
2618
b481de9c 2619 if (!len)
6440adb5 2620 /* If there is no payload, then we use only one Tx buffer */
b481de9c
ZY		 2621 *control_flags = TFD_CTL_COUNT_SET(1);
2622 else
6440adb5
CB		 2623 /* Else use 2 buffers.
2624 * Tell 3945 about any padding after MAC header */
b481de9c
ZY		 2625 *control_flags = TFD_CTL_COUNT_SET(2) |
2626 TFD_CTL_PAD_SET(U32_PAD(len));
2627
6440adb5 2628 /* Total # bytes to be transmitted */
b481de9c
ZY		 2629 len = (u16)skb->len;
2630 out_cmd->cmd.tx.len = cpu_to_le16(len);
2631
2632 /* TODO need this for burst mode later on */
e039fa4a 2633 iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, unicast, sta_id);
b481de9c
ZY		 2634
2635 /* set is_hcca to 0; it probably will never be implemented */
e039fa4a 2636 iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
b481de9c
ZY		 2637
2638 out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
2639 out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
2640
8b7b1e05 2641 if (!ieee80211_has_morefrags(hdr->frame_control)) {
b481de9c 2642 txq->need_update = 1;
3ac7f146 2643 if (qc)
b481de9c 2644 priv->stations[sta_id].tid[tid].seq_number = seq_number;
b481de9c
ZY		 2645 } else {
2646 wait_write_ptr = 1;
2647 txq->need_update = 0;
2648 }
2649
bb8c093b 2650 iwl3945_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
b481de9c
ZY		 2651 sizeof(out_cmd->cmd.tx));
2652
bb8c093b 2653 iwl3945_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
7294ec95 2654 ieee80211_hdrlen(fc));
b481de9c 2655
6440adb5 2656 /* Tell device the write index *just past* this latest filled TFD */
c54b679d 2657 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
bb8c093b 2658 rc = iwl3945_tx_queue_update_write_ptr(priv, txq);
b481de9c
ZY		 2659 spin_unlock_irqrestore(&priv->lock, flags);
2660
2661 if (rc)
2662 return rc;
2663
bb8c093b 2664 if ((iwl3945_queue_space(q) < q->high_mark)
b481de9c
ZY		 2665 && priv->mac80211_registered) {
2666 if (wait_write_ptr) {
2667 spin_lock_irqsave(&priv->lock, flags);
2668 txq->need_update = 1;
bb8c093b 2669 iwl3945_tx_queue_update_write_ptr(priv, txq);
b481de9c
ZY		 2670 spin_unlock_irqrestore(&priv->lock, flags);
2671 }
2672
e2530083 2673 ieee80211_stop_queue(priv->hw, skb_get_queue_mapping(skb));
b481de9c
ZY		 2674 }
2675
2676 return 0;
2677
2678drop_unlock:
2679 spin_unlock_irqrestore(&priv->lock, flags);
2680drop:
2681 return -1;
2682}
2683
bb8c093b 2684static void iwl3945_set_rate(struct iwl3945_priv *priv)
b481de9c 2685{
8318d78a 2686 const struct ieee80211_supported_band *sband = NULL;
b481de9c
ZY		 2687 struct ieee80211_rate *rate;
2688 int i;
2689
8318d78a
JB		 2690 sband = iwl3945_get_band(priv, priv->band);
2691 if (!sband) {
c4ba9621
SA		 2692 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
2693 return;
2694 }
b481de9c
ZY		 2695
2696 priv->active_rate = 0;
2697 priv->active_rate_basic = 0;
2698
8318d78a
JB		 2699 IWL_DEBUG_RATE("Setting rates for %s GHz\n",
2700 sband->band == IEEE80211_BAND_2GHZ ? "2.4" : "5");
2701
2702 for (i = 0; i < sband->n_bitrates; i++) {
2703 rate = &sband->bitrates[i];
2704 if ((rate->hw_value < IWL_RATE_COUNT) &&
2705 !(rate->flags & IEEE80211_CHAN_DISABLED)) {
2706 IWL_DEBUG_RATE("Adding rate index %d (plcp %d)\n",
2707 rate->hw_value, iwl3945_rates[rate->hw_value].plcp);
2708 priv->active_rate |= (1 << rate->hw_value);
2709 }
b481de9c
ZY		 2710 }
2711
2712 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
2713 priv->active_rate, priv->active_rate_basic);
2714
2715 /*
2716 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
2717 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
2718 * OFDM
2719 */
2720 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
2721 priv->staging_rxon.cck_basic_rates =
2722 ((priv->active_rate_basic &
2723 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
2724 else
2725 priv->staging_rxon.cck_basic_rates =
2726 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2727
2728 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
2729 priv->staging_rxon.ofdm_basic_rates =
2730 ((priv->active_rate_basic &
2731 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
2732 IWL_FIRST_OFDM_RATE) & 0xFF;
2733 else
2734 priv->staging_rxon.ofdm_basic_rates =
2735 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2736}
2737
bb8c093b 2738static void iwl3945_radio_kill_sw(struct iwl3945_priv *priv, int disable_radio)
b481de9c
ZY		 2739{
2740 unsigned long flags;
2741
2742 if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
2743 return;
2744
2745 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
2746 disable_radio ? "OFF" : "ON");
2747
2748 if (disable_radio) {
bb8c093b 2749 iwl3945_scan_cancel(priv);
b481de9c 2750 /* FIXME: This is a workaround for AP */
05c914fe 2751 if (priv->iw_mode != NL80211_IFTYPE_AP) {
b481de9c 2752 spin_lock_irqsave(&priv->lock, flags);
bb8c093b 2753 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_SET,
b481de9c
ZY		 2754 CSR_UCODE_SW_BIT_RFKILL);
2755 spin_unlock_irqrestore(&priv->lock, flags);
bb8c093b 2756 iwl3945_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
b481de9c
ZY		 2757 set_bit(STATUS_RF_KILL_SW, &priv->status);
2758 }
2759 return;
2760 }
2761
2762 spin_lock_irqsave(&priv->lock, flags);
bb8c093b 2763 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
b481de9c
ZY		 2764
2765 clear_bit(STATUS_RF_KILL_SW, &priv->status);
2766 spin_unlock_irqrestore(&priv->lock, flags);
2767
2768 /* wake up ucode */
2769 msleep(10);
2770
2771 spin_lock_irqsave(&priv->lock, flags);
bb8c093b
CH		 2772 iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
2773 if (!iwl3945_grab_nic_access(priv))
2774 iwl3945_release_nic_access(priv);
b481de9c
ZY		 2775 spin_unlock_irqrestore(&priv->lock, flags);
2776
2777 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
2778 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2779 "disabled by HW switch\n");
2780 return;
2781 }
2782
808e72a0
ZY		 2783 if (priv->is_open)
2784 queue_work(priv->workqueue, &priv->restart);
b481de9c
ZY		 2785 return;
2786}
2787
bb8c093b 2788void iwl3945_set_decrypted_flag(struct iwl3945_priv *priv, struct sk_buff *skb,
b481de9c
ZY		 2789 u32 decrypt_res, struct ieee80211_rx_status *stats)
2790{
2791 u16 fc =
2792 le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
2793
2794 if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
2795 return;
2796
2797 if (!(fc & IEEE80211_FCTL_PROTECTED))
2798 return;
2799
2800 IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
2801 switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
2802 case RX_RES_STATUS_SEC_TYPE_TKIP:
2803 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2804 RX_RES_STATUS_BAD_ICV_MIC)
2805 stats->flag |= RX_FLAG_MMIC_ERROR;
2806 case RX_RES_STATUS_SEC_TYPE_WEP:
2807 case RX_RES_STATUS_SEC_TYPE_CCMP:
2808 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2809 RX_RES_STATUS_DECRYPT_OK) {
2810 IWL_DEBUG_RX("hw decrypt successfully!!!\n");
2811 stats->flag |= RX_FLAG_DECRYPTED;
2812 }
2813 break;
2814
2815 default:
2816 break;
2817 }
2818}
2819
c8b0e6e1 2820#ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
b481de9c
ZY		 2821
2822#include "iwl-spectrum.h"
2823
2824#define BEACON_TIME_MASK_LOW 0x00FFFFFF
2825#define BEACON_TIME_MASK_HIGH 0xFF000000
2826#define TIME_UNIT 1024
2827
2828/*
2829 * extended beacon time format
2830 * time in usec will be changed into a 32-bit value in 8:24 format
2831 * the high 1 byte is the beacon counts
2832 * the lower 3 bytes is the time in usec within one beacon interval
2833 */
2834
bb8c093b 2835static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
b481de9c
ZY		 2836{
2837 u32 quot;
2838 u32 rem;
2839 u32 interval = beacon_interval * 1024;
2840
2841 if (!interval || !usec)
2842 return 0;
2843
2844 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
2845 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
2846
2847 return (quot << 24) + rem;
2848}
2849
2850/* base is usually what we get from ucode with each received frame,
2851 * the same as HW timer counter counting down
2852 */
2853
bb8c093b 2854static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
b481de9c
ZY		 2855{
2856 u32 base_low = base & BEACON_TIME_MASK_LOW;
2857 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
2858 u32 interval = beacon_interval * TIME_UNIT;
2859 u32 res = (base & BEACON_TIME_MASK_HIGH) +
2860 (addon & BEACON_TIME_MASK_HIGH);
2861
2862 if (base_low > addon_low)
2863 res += base_low - addon_low;
2864 else if (base_low < addon_low) {
2865 res += interval + base_low - addon_low;
2866 res += (1 << 24);
2867 } else
2868 res += (1 << 24);
2869
2870 return cpu_to_le32(res);
2871}
2872
bb8c093b 2873static int iwl3945_get_measurement(struct iwl3945_priv *priv,
b481de9c
ZY		 2874 struct ieee80211_measurement_params *params,
2875 u8 type)
2876{
bb8c093b
CH		 2877 struct iwl3945_spectrum_cmd spectrum;
2878 struct iwl3945_rx_packet *res;
2879 struct iwl3945_host_cmd cmd = {
b481de9c
ZY		 2880 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
2881 .data = (void *)&spectrum,
2882 .meta.flags = CMD_WANT_SKB,
2883 };
2884 u32 add_time = le64_to_cpu(params->start_time);
2885 int rc;
2886 int spectrum_resp_status;
2887 int duration = le16_to_cpu(params->duration);
2888
bb8c093b 2889 if (iwl3945_is_associated(priv))
b481de9c 2890 add_time =
bb8c093b 2891 iwl3945_usecs_to_beacons(
b481de9c
ZY		 2892 le64_to_cpu(params->start_time) - priv->last_tsf,
2893 le16_to_cpu(priv->rxon_timing.beacon_interval));
2894
2895 memset(&spectrum, 0, sizeof(spectrum));
2896
2897 spectrum.channel_count = cpu_to_le16(1);
2898 spectrum.flags =
2899 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
2900 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
2901 cmd.len = sizeof(spectrum);
2902 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
2903
bb8c093b 2904 if (iwl3945_is_associated(priv))
b481de9c 2905 spectrum.start_time =
bb8c093b 2906 iwl3945_add_beacon_time(priv->last_beacon_time,
b481de9c
ZY		 2907 add_time,
2908 le16_to_cpu(priv->rxon_timing.beacon_interval));
2909 else
2910 spectrum.start_time = 0;
2911
2912 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
2913 spectrum.channels[0].channel = params->channel;
2914 spectrum.channels[0].type = type;
2915 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
2916 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
2917 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
2918
bb8c093b 2919 rc = iwl3945_send_cmd_sync(priv, &cmd);
b481de9c
ZY		 2920 if (rc)
2921 return rc;
2922
bb8c093b 2923 res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
b481de9c
ZY		 2924 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
2925 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
2926 rc = -EIO;
2927 }
2928
2929 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
2930 switch (spectrum_resp_status) {
2931 case 0: /* Command will be handled */
2932 if (res->u.spectrum.id != 0xff) {
bc434dd2
IS		 2933 IWL_DEBUG_INFO("Replaced existing measurement: %d\n",
2934 res->u.spectrum.id);
b481de9c
ZY		 2935 priv->measurement_status &= ~MEASUREMENT_READY;
2936 }
2937 priv->measurement_status |= MEASUREMENT_ACTIVE;
2938 rc = 0;
2939 break;
2940
2941 case 1: /* Command will not be handled */
2942 rc = -EAGAIN;
2943 break;
2944 }
2945
2946 dev_kfree_skb_any(cmd.meta.u.skb);
2947
2948 return rc;
2949}
2950#endif
2951
bb8c093b
CH		 2952static void iwl3945_rx_reply_alive(struct iwl3945_priv *priv,
2953 struct iwl3945_rx_mem_buffer *rxb)
b481de9c 2954{
bb8c093b
CH		 2955 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
2956 struct iwl3945_alive_resp *palive;
b481de9c
ZY		 2957 struct delayed_work *pwork;
2958
2959 palive = &pkt->u.alive_frame;
2960
2961 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
2962 "0x%01X 0x%01X\n",
2963 palive->is_valid, palive->ver_type,
2964 palive->ver_subtype);
2965
2966 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
2967 IWL_DEBUG_INFO("Initialization Alive received.\n");
2968 memcpy(&priv->card_alive_init,
2969 &pkt->u.alive_frame,
bb8c093b 2970 sizeof(struct iwl3945_init_alive_resp));
b481de9c
ZY		 2971 pwork = &priv->init_alive_start;
2972 } else {
2973 IWL_DEBUG_INFO("Runtime Alive received.\n");
2974 memcpy(&priv->card_alive, &pkt->u.alive_frame,
bb8c093b 2975 sizeof(struct iwl3945_alive_resp));
b481de9c 2976 pwork = &priv->alive_start;
bb8c093b 2977 iwl3945_disable_events(priv);
b481de9c
ZY		 2978 }
2979
2980 /* We delay the ALIVE response by 5ms to
2981 * give the HW RF Kill time to activate... */
2982 if (palive->is_valid == UCODE_VALID_OK)
2983 queue_delayed_work(priv->workqueue, pwork,
2984 msecs_to_jiffies(5));
2985 else
2986 IWL_WARNING("uCode did not respond OK.\n");
2987}
2988
bb8c093b
CH		 2989static void iwl3945_rx_reply_add_sta(struct iwl3945_priv *priv,
2990 struct iwl3945_rx_mem_buffer *rxb)
b481de9c 2991{
bb8c093b 2992 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
b481de9c
ZY		 2993
2994 IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
2995 return;
2996}
2997
bb8c093b
CH		 2998static void iwl3945_rx_reply_error(struct iwl3945_priv *priv,
2999 struct iwl3945_rx_mem_buffer *rxb)
b481de9c 3000{
bb8c093b 3001 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
b481de9c
ZY		 3002
3003 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3004 "seq 0x%04X ser 0x%08X\n",
3005 le32_to_cpu(pkt->u.err_resp.error_type),
3006 get_cmd_string(pkt->u.err_resp.cmd_id),
3007 pkt->u.err_resp.cmd_id,
3008 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3009 le32_to_cpu(pkt->u.err_resp.error_info));
3010}
3011
3012#define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3013
bb8c093b 3014static void iwl3945_rx_csa(struct iwl3945_priv *priv, struct iwl3945_rx_mem_buffer *rxb)
b481de9c 3015{
bb8c093b
CH		 3016 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3017 struct iwl3945_rxon_cmd *rxon = (void *)&priv->active_rxon;
3018 struct iwl3945_csa_notification *csa = &(pkt->u.csa_notif);
b481de9c
ZY		 3019 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3020 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3021 rxon->channel = csa->channel;
3022 priv->staging_rxon.channel = csa->channel;
3023}
3024
bb8c093b
CH		 3025static void iwl3945_rx_spectrum_measure_notif(struct iwl3945_priv *priv,
3026 struct iwl3945_rx_mem_buffer *rxb)
b481de9c 3027{
c8b0e6e1 3028#ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
bb8c093b
CH		 3029 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3030 struct iwl3945_spectrum_notification *report = &(pkt->u.spectrum_notif);
b481de9c
ZY		 3031
3032 if (!report->state) {
3033 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3034 "Spectrum Measure Notification: Start\n");
3035 return;
3036 }
3037
3038 memcpy(&priv->measure_report, report, sizeof(*report));
3039 priv->measurement_status |= MEASUREMENT_READY;
3040#endif
3041}
3042
bb8c093b
CH		 3043static void iwl3945_rx_pm_sleep_notif(struct iwl3945_priv *priv,
3044 struct iwl3945_rx_mem_buffer *rxb)
b481de9c 3045{
c8b0e6e1 3046#ifdef CONFIG_IWL3945_DEBUG
bb8c093b
CH		 3047 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3048 struct iwl3945_sleep_notification *sleep = &(pkt->u.sleep_notif);
b481de9c
ZY		 3049 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3050 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3051#endif
3052}
3053
bb8c093b
CH		 3054static void iwl3945_rx_pm_debug_statistics_notif(struct iwl3945_priv *priv,
3055 struct iwl3945_rx_mem_buffer *rxb)
b481de9c 3056{
bb8c093b 3057 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
b481de9c
ZY		 3058 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3059 "notification for %s:\n",
3060 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
bb8c093b 3061 iwl3945_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
b481de9c
ZY		 3062}
3063
bb8c093b 3064static void iwl3945_bg_beacon_update(struct work_struct *work)
b481de9c 3065{
bb8c093b
CH		 3066 struct iwl3945_priv *priv =
3067 container_of(work, struct iwl3945_priv, beacon_update);
b481de9c
ZY		 3068 struct sk_buff *beacon;
3069
3070 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
e039fa4a 3071 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
b481de9c
ZY		 3072
3073 if (!beacon) {
3074 IWL_ERROR("update beacon failed\n");
3075 return;
3076 }
3077
3078 mutex_lock(&priv->mutex);
3079 /* new beacon skb is allocated every time; dispose previous.*/
3080 if (priv->ibss_beacon)
3081 dev_kfree_skb(priv->ibss_beacon);
3082
3083 priv->ibss_beacon = beacon;
3084 mutex_unlock(&priv->mutex);
3085
bb8c093b 3086 iwl3945_send_beacon_cmd(priv);
b481de9c
ZY		 3087}
3088
bb8c093b
CH		 3089static void iwl3945_rx_beacon_notif(struct iwl3945_priv *priv,
3090 struct iwl3945_rx_mem_buffer *rxb)
b481de9c 3091{
c8b0e6e1 3092#ifdef CONFIG_IWL3945_DEBUG
bb8c093b
CH		 3093 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3094 struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
b481de9c
ZY		 3095 u8 rate = beacon->beacon_notify_hdr.rate;
3096
3097 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3098 "tsf %d %d rate %d\n",
3099 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3100 beacon->beacon_notify_hdr.failure_frame,
3101 le32_to_cpu(beacon->ibss_mgr_status),
3102 le32_to_cpu(beacon->high_tsf),
3103 le32_to_cpu(beacon->low_tsf), rate);
3104#endif
3105
05c914fe 3106 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
b481de9c
ZY		 3107 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3108 queue_work(priv->workqueue, &priv->beacon_update);
3109}
3110
3111/* Service response to REPLY_SCAN_CMD (0x80) */
bb8c093b
CH		 3112static void iwl3945_rx_reply_scan(struct iwl3945_priv *priv,
3113 struct iwl3945_rx_mem_buffer *rxb)
b481de9c 3114{
c8b0e6e1 3115#ifdef CONFIG_IWL3945_DEBUG
bb8c093b
CH		 3116 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3117 struct iwl3945_scanreq_notification *notif =
3118 (struct iwl3945_scanreq_notification *)pkt->u.raw;
b481de9c
ZY		 3119
3120 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3121#endif
3122}
3123
3124/* Service SCAN_START_NOTIFICATION (0x82) */
bb8c093b
CH		 3125static void iwl3945_rx_scan_start_notif(struct iwl3945_priv *priv,
3126 struct iwl3945_rx_mem_buffer *rxb)
b481de9c 3127{
bb8c093b
CH		 3128 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3129 struct iwl3945_scanstart_notification *notif =
3130 (struct iwl3945_scanstart_notification *)pkt->u.raw;
b481de9c
ZY		 3131 priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3132 IWL_DEBUG_SCAN("Scan start: "
3133 "%d [802.11%s] "
3134 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3135 notif->channel,
3136 notif->band ? "bg" : "a",
3137 notif->tsf_high,
3138 notif->tsf_low, notif->status, notif->beacon_timer);
3139}
3140
3141/* Service SCAN_RESULTS_NOTIFICATION (0x83) */
bb8c093b
CH		 3142static void iwl3945_rx_scan_results_notif(struct iwl3945_priv *priv,
3143 struct iwl3945_rx_mem_buffer *rxb)
b481de9c 3144{
bb8c093b
CH		 3145 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3146 struct iwl3945_scanresults_notification *notif =
3147 (struct iwl3945_scanresults_notification *)pkt->u.raw;
b481de9c
ZY		 3148
3149 IWL_DEBUG_SCAN("Scan ch.res: "
3150 "%d [802.11%s] "
3151 "(TSF: 0x%08X:%08X) - %d "
3152 "elapsed=%lu usec (%dms since last)\n",
3153 notif->channel,
3154 notif->band ? "bg" : "a",
3155 le32_to_cpu(notif->tsf_high),
3156 le32_to_cpu(notif->tsf_low),
3157 le32_to_cpu(notif->statistics[0]),
3158 le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3159 jiffies_to_msecs(elapsed_jiffies
3160 (priv->last_scan_jiffies, jiffies)));
3161
3162 priv->last_scan_jiffies = jiffies;
7878a5a4 3163 priv->next_scan_jiffies = 0;
b481de9c
ZY		 3164}
3165
3166/* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
bb8c093b
CH		 3167static void iwl3945_rx_scan_complete_notif(struct iwl3945_priv *priv,
3168 struct iwl3945_rx_mem_buffer *rxb)
b481de9c 3169{
bb8c093b
CH		 3170 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3171 struct iwl3945_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
b481de9c
ZY		 3172
3173 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3174 scan_notif->scanned_channels,
3175 scan_notif->tsf_low,
3176 scan_notif->tsf_high, scan_notif->status);
3177
3178 /* The HW is no longer scanning */
3179 clear_bit(STATUS_SCAN_HW, &priv->status);
3180
3181 /* The scan completion notification came in, so kill that timer... */
3182 cancel_delayed_work(&priv->scan_check);
3183
3184 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
66b5004d
RR		 3185 (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) ?
3186 "2.4" : "5.2",
b481de9c
ZY		 3187 jiffies_to_msecs(elapsed_jiffies
3188 (priv->scan_pass_start, jiffies)));
3189
66b5004d
RR		 3190 /* Remove this scanned band from the list of pending
3191 * bands to scan, band G precedes A in order of scanning
3192 * as seen in iwl3945_bg_request_scan */
3193 if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ))
3194 priv->scan_bands &= ~BIT(IEEE80211_BAND_2GHZ);
3195 else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ))
3196 priv->scan_bands &= ~BIT(IEEE80211_BAND_5GHZ);
b481de9c
ZY		 3197
3198 /* If a request to abort was given, or the scan did not succeed
3199 * then we reset the scan state machine and terminate,
3200 * re-queuing another scan if one has been requested */
3201 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3202 IWL_DEBUG_INFO("Aborted scan completed.\n");
3203 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3204 } else {
3205 /* If there are more bands on this scan pass reschedule */
3206 if (priv->scan_bands > 0)
3207 goto reschedule;
3208 }
3209
3210 priv->last_scan_jiffies = jiffies;
7878a5a4 3211 priv->next_scan_jiffies = 0;
b481de9c
ZY		 3212 IWL_DEBUG_INFO("Setting scan to off\n");
3213
3214 clear_bit(STATUS_SCANNING, &priv->status);
3215
3216 IWL_DEBUG_INFO("Scan took %dms\n",
3217 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
3218
3219 queue_work(priv->workqueue, &priv->scan_completed);
3220
3221 return;
3222
3223reschedule:
3224 priv->scan_pass_start = jiffies;
3225 queue_work(priv->workqueue, &priv->request_scan);
3226}
3227
3228/* Handle notification from uCode that card's power state is changing
3229 * due to software, hardware, or critical temperature RFKILL */
bb8c093b
CH		 3230static void iwl3945_rx_card_state_notif(struct iwl3945_priv *priv,
3231 struct iwl3945_rx_mem_buffer *rxb)
b481de9c 3232{
bb8c093b 3233 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
b481de9c
ZY		 3234 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
3235 unsigned long status = priv->status;
3236
3237 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
3238 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
3239 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
3240
bb8c093b 3241 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_SET,
b481de9c
ZY		 3242 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3243
3244 if (flags & HW_CARD_DISABLED)
3245 set_bit(STATUS_RF_KILL_HW, &priv->status);
3246 else
3247 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3248
3249
3250 if (flags & SW_CARD_DISABLED)
3251 set_bit(STATUS_RF_KILL_SW, &priv->status);
3252 else
3253 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3254
bb8c093b 3255 iwl3945_scan_cancel(priv);
b481de9c
ZY		 3256
3257 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
3258 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
3259 (test_bit(STATUS_RF_KILL_SW, &status) !=
3260 test_bit(STATUS_RF_KILL_SW, &priv->status)))
3261 queue_work(priv->workqueue, &priv->rf_kill);
3262 else
3263 wake_up_interruptible(&priv->wait_command_queue);
3264}
3265
3266/**
bb8c093b 3267 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
b481de9c
ZY		 3268 *
3269 * Setup the RX handlers for each of the reply types sent from the uCode
3270 * to the host.
3271 *
3272 * This function chains into the hardware specific files for them to setup
3273 * any hardware specific handlers as well.
3274 */
bb8c093b 3275static void iwl3945_setup_rx_handlers(struct iwl3945_priv *priv)
b481de9c 3276{
bb8c093b
CH		 3277 priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
3278 priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
3279 priv->rx_handlers[REPLY_ERROR] = iwl3945_rx_reply_error;
3280 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl3945_rx_csa;
b481de9c 3281 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
bb8c093b
CH		 3282 iwl3945_rx_spectrum_measure_notif;
3283 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl3945_rx_pm_sleep_notif;
b481de9c 3284 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
bb8c093b
CH		 3285 iwl3945_rx_pm_debug_statistics_notif;
3286 priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
b481de9c 3287
9fbab516
BC		 3288 /*
3289 * The same handler is used for both the REPLY to a discrete
3290 * statistics request from the host as well as for the periodic
3291 * statistics notifications (after received beacons) from the uCode.
b481de9c 3292 */
bb8c093b
CH		 3293 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
3294 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
b481de9c 3295
bb8c093b
CH		 3296 priv->rx_handlers[REPLY_SCAN_CMD] = iwl3945_rx_reply_scan;
3297 priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl3945_rx_scan_start_notif;
b481de9c 3298 priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
bb8c093b 3299 iwl3945_rx_scan_results_notif;
b481de9c 3300 priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
bb8c093b
CH		 3301 iwl3945_rx_scan_complete_notif;
3302 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
b481de9c 3303
9fbab516 3304 /* Set up hardware specific Rx handlers */
bb8c093b 3305 iwl3945_hw_rx_handler_setup(priv);
b481de9c
ZY		 3306}
3307
91c066f2
TW		 3308/**
3309 * iwl3945_cmd_queue_reclaim - Reclaim CMD queue entries
3310 * When FW advances 'R' index, all entries between old and new 'R' index
3311 * need to be reclaimed.
3312 */
3313static void iwl3945_cmd_queue_reclaim(struct iwl3945_priv *priv,
3314 int txq_id, int index)
3315{
3316 struct iwl3945_tx_queue *txq = &priv->txq[txq_id];
3317 struct iwl3945_queue *q = &txq->q;
3318 int nfreed = 0;
3319
3320 if ((index >= q->n_bd) || (iwl3945_x2_queue_used(q, index) == 0)) {
3321 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3322 "is out of range [0-%d] %d %d.\n", txq_id,
3323 index, q->n_bd, q->write_ptr, q->read_ptr);
3324 return;
3325 }
3326
3327 for (index = iwl_queue_inc_wrap(index, q->n_bd); q->read_ptr != index;
3328 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
3329 if (nfreed > 1) {
3330 IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
3331 q->write_ptr, q->read_ptr);
3332 queue_work(priv->workqueue, &priv->restart);
3333 break;
3334 }
3335 nfreed++;
3336 }
3337}
3338
3339
b481de9c 3340/**
bb8c093b 3341 * iwl3945_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
b481de9c
ZY		 3342 * @rxb: Rx buffer to reclaim
3343 *
3344 * If an Rx buffer has an async callback associated with it the callback
3345 * will be executed. The attached skb (if present) will only be freed
3346 * if the callback returns 1
3347 */
bb8c093b
CH		 3348static void iwl3945_tx_cmd_complete(struct iwl3945_priv *priv,
3349 struct iwl3945_rx_mem_buffer *rxb)
b481de9c 3350{
bb8c093b 3351 struct iwl3945_rx_packet *pkt = (struct iwl3945_rx_packet *)rxb->skb->data;
b481de9c
ZY		 3352 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3353 int txq_id = SEQ_TO_QUEUE(sequence);
3354 int index = SEQ_TO_INDEX(sequence);
3355 int huge = sequence & SEQ_HUGE_FRAME;
3356 int cmd_index;
bb8c093b 3357 struct iwl3945_cmd *cmd;
b481de9c 3358
b481de9c
ZY		 3359 BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
3360
3361 cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
3362 cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
3363
3364 /* Input error checking is done when commands are added to queue. */
3365 if (cmd->meta.flags & CMD_WANT_SKB) {
3366 cmd->meta.source->u.skb = rxb->skb;
3367 rxb->skb = NULL;
3368 } else if (cmd->meta.u.callback &&
3369 !cmd->meta.u.callback(priv, cmd, rxb->skb))
3370 rxb->skb = NULL;
3371
91c066f2 3372 iwl3945_cmd_queue_reclaim(priv, txq_id, index);
b481de9c
ZY		 3373
3374 if (!(cmd->meta.flags & CMD_ASYNC)) {
3375 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3376 wake_up_interruptible(&priv->wait_command_queue);
3377 }
3378}
3379
3380/************************** RX-FUNCTIONS ****************************/
3381/*
3382 * Rx theory of operation
3383 *
3384 * The host allocates 32 DMA target addresses and passes the host address
3385 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
3386 * 0 to 31
3387 *
3388 * Rx Queue Indexes
3389 * The host/firmware share two index registers for managing the Rx buffers.
3390 *
3391 * The READ index maps to the first position that the firmware may be writing
3392 * to -- the driver can read up to (but not including) this position and get
3393 * good data.
3394 * The READ index is managed by the firmware once the card is enabled.
3395 *
3396 * The WRITE index maps to the last position the driver has read from -- the
3397 * position preceding WRITE is the last slot the firmware can place a packet.
3398 *
3399 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
3400 * WRITE = READ.
3401 *
9fbab516 3402 * During initialization, the host sets up the READ queue position to the first
b481de9c
ZY		 3403 * INDEX position, and WRITE to the last (READ - 1 wrapped)
3404 *
9fbab516 3405 * When the firmware places a packet in a buffer, it will advance the READ index
b481de9c
ZY		 3406 * and fire the RX interrupt. The driver can then query the READ index and
3407 * process as many packets as possible, moving the WRITE index forward as it
3408 * resets the Rx queue buffers with new memory.
3409 *
3410 * The management in the driver is as follows:
3411 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
3412 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
01ebd063 3413 * to replenish the iwl->rxq->rx_free.
bb8c093b 3414 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
b481de9c
ZY		 3415 * iwl->rxq is replenished and the READ INDEX is updated (updating the
3416 * 'processed' and 'read' driver indexes as well)
3417 * + A received packet is processed and handed to the kernel network stack,
3418 * detached from the iwl->rxq. The driver 'processed' index is updated.
3419 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
3420 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
3421 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
3422 * were enough free buffers and RX_STALLED is set it is cleared.
3423 *
3424 *
3425 * Driver sequence:
3426 *
9fbab516
BC		 3427 * iwl3945_rx_queue_alloc() Allocates rx_free
3428 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
bb8c093b 3429 * iwl3945_rx_queue_restock
9fbab516 3430 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
b481de9c
ZY		 3431 * queue, updates firmware pointers, and updates
3432 * the WRITE index. If insufficient rx_free buffers
bb8c093b 3433 * are available, schedules iwl3945_rx_replenish
b481de9c
ZY		 3434 *
3435 * -- enable interrupts --
9fbab516 3436 * ISR - iwl3945_rx() Detach iwl3945_rx_mem_buffers from pool up to the
b481de9c
ZY		 3437 * READ INDEX, detaching the SKB from the pool.
3438 * Moves the packet buffer from queue to rx_used.
bb8c093b 3439 * Calls iwl3945_rx_queue_restock to refill any empty
b481de9c
ZY		 3440 * slots.
3441 * ...
3442 *
3443 */
3444
3445/**
bb8c093b 3446 * iwl3945_rx_queue_space - Return number of free slots available in queue.
b481de9c 3447 */
bb8c093b 3448static int iwl3945_rx_queue_space(const struct iwl3945_rx_queue *q)
b481de9c
ZY		 3449{
3450 int s = q->read - q->write;
3451 if (s <= 0)
3452 s += RX_QUEUE_SIZE;
3453 /* keep some buffer to not confuse full and empty queue */
3454 s -= 2;
3455 if (s < 0)
3456 s = 0;
3457 return s;
3458}
3459
3460/**
bb8c093b 3461 * iwl3945_rx_queue_update_write_ptr - Update the write pointer for the RX queue
b481de9c 3462 */
bb8c093b 3463int iwl3945_rx_queue_update_write_ptr(struct iwl3945_priv *priv, struct iwl3945_rx_queue *q)
b481de9c
ZY		 3464{
3465 u32 reg = 0;
3466 int rc = 0;
3467 unsigned long flags;
3468
3469 spin_lock_irqsave(&q->lock, flags);
3470
3471 if (q->need_update == 0)
3472 goto exit_unlock;
3473
6440adb5 3474 /* If power-saving is in use, make sure device is awake */
b481de9c 3475 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
bb8c093b 3476 reg = iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
b481de9c
ZY		 3477
3478 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
bb8c093b 3479 iwl3945_set_bit(priv, CSR_GP_CNTRL,
b481de9c
ZY		 3480 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3481 goto exit_unlock;
3482 }
3483
bb8c093b 3484 rc = iwl3945_grab_nic_access(priv);
b481de9c
ZY		 3485 if (rc)
3486 goto exit_unlock;
3487
6440adb5 3488 /* Device expects a multiple of 8 */
bb8c093b 3489 iwl3945_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
b481de9c 3490 q->write & ~0x7);
bb8c093b 3491 iwl3945_release_nic_access(priv);
6440adb5
CB		 3492
3493 /* Else device is assumed to be awake */
b481de9c 3494 } else
6440adb5 3495 /* Device expects a multiple of 8 */
bb8c093b 3496 iwl3945_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
b481de9c
ZY		 3497
3498
3499 q->need_update = 0;
3500
3501 exit_unlock:
3502 spin_unlock_irqrestore(&q->lock, flags);
3503 return rc;
3504}
3505
3506/**
9fbab516 3507 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
b481de9c 3508 */
bb8c093b 3509static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl3945_priv *priv,
b481de9c
ZY		 3510 dma_addr_t dma_addr)
3511{
3512 return cpu_to_le32((u32)dma_addr);
3513}
3514
3515/**
bb8c093b 3516 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
b481de9c 3517 *
9fbab516 3518 * If there are slots in the RX queue that need to be restocked,
b481de9c 3519 * and we have free pre-allocated buffers, fill the ranks as much
9fbab516 3520 * as we can, pulling from rx_free.
b481de9c
ZY		 3521 *
3522 * This moves the 'write' index forward to catch up with 'processed', and
3523 * also updates the memory address in the firmware to reference the new
3524 * target buffer.
3525 */
bb8c093b 3526static int iwl3945_rx_queue_restock(struct iwl3945_priv *priv)
b481de9c 3527{
bb8c093b 3528 struct iwl3945_rx_queue *rxq = &priv->rxq;
b481de9c 3529 struct list_head *element;
bb8c093b 3530 struct iwl3945_rx_mem_buffer *rxb;
b481de9c
ZY		 3531 unsigned long flags;
3532 int write, rc;
3533
3534 spin_lock_irqsave(&rxq->lock, flags);
3535 write = rxq->write & ~0x7;
bb8c093b 3536 while ((iwl3945_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
6440adb5 3537 /* Get next free Rx buffer, remove from free list */
b481de9c 3538 element = rxq->rx_free.next;
bb8c093b 3539 rxb = list_entry(element, struct iwl3945_rx_mem_buffer, list);
b481de9c 3540 list_del(element);
6440adb5
CB		 3541
3542 /* Point to Rx buffer via next RBD in circular buffer */
bb8c093b 3543 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->dma_addr);
b481de9c
ZY		 3544 rxq->queue[rxq->write] = rxb;
3545 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
3546 rxq->free_count--;
3547 }
3548 spin_unlock_irqrestore(&rxq->lock, flags);
3549 /* If the pre-allocated buffer pool is dropping low, schedule to
3550 * refill it */
3551 if (rxq->free_count <= RX_LOW_WATERMARK)
3552 queue_work(priv->workqueue, &priv->rx_replenish);
3553
3554
6440adb5
CB		 3555 /* If we've added more space for the firmware to place data, tell it.
3556 * Increment device's write pointer in multiples of 8. */
b481de9c
ZY		 3557 if ((write != (rxq->write & ~0x7))
3558 || (abs(rxq->write - rxq->read) > 7)) {
3559 spin_lock_irqsave(&rxq->lock, flags);
3560 rxq->need_update = 1;
3561 spin_unlock_irqrestore(&rxq->lock, flags);
bb8c093b 3562 rc = iwl3945_rx_queue_update_write_ptr(priv, rxq);
b481de9c
ZY		 3563 if (rc)
3564 return rc;
3565 }
3566
3567 return 0;
3568}
3569
3570/**
bb8c093b 3571 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
b481de9c
ZY		 3572 *
3573 * When moving to rx_free an SKB is allocated for the slot.
3574 *
bb8c093b 3575 * Also restock the Rx queue via iwl3945_rx_queue_restock.
01ebd063 3576 * This is called as a scheduled work item (except for during initialization)
b481de9c 3577 */
5c0eef96 3578static void iwl3945_rx_allocate(struct iwl3945_priv *priv)
b481de9c 3579{
bb8c093b 3580 struct iwl3945_rx_queue *rxq = &priv->rxq;
b481de9c 3581 struct list_head *element;
bb8c093b 3582 struct iwl3945_rx_mem_buffer *rxb;
b481de9c
ZY		 3583 unsigned long flags;
3584 spin_lock_irqsave(&rxq->lock, flags);
3585 while (!list_empty(&rxq->rx_used)) {
3586 element = rxq->rx_used.next;
bb8c093b 3587 rxb = list_entry(element, struct iwl3945_rx_mem_buffer, list);
6440adb5
CB		 3588
3589 /* Alloc a new receive buffer */
b481de9c
ZY		 3590 rxb->skb =
3591 alloc_skb(IWL_RX_BUF_SIZE, __GFP_NOWARN | GFP_ATOMIC);
3592 if (!rxb->skb) {
3593 if (net_ratelimit())
3594 printk(KERN_CRIT DRV_NAME
3595 ": Can not allocate SKB buffers\n");
3596 /* We don't reschedule replenish work here -- we will
3597 * call the restock method and if it still needs
3598 * more buffers it will schedule replenish */
3599 break;
3600 }
12342c47
ZY		 3601
3602 /* If radiotap head is required, reserve some headroom here.
3603 * The physical head count is a variable rx_stats->phy_count.
3604 * We reserve 4 bytes here. Plus these extra bytes, the
3605 * headroom of the physical head should be enough for the
3606 * radiotap head that iwl3945 supported. See iwl3945_rt.
3607 */
3608 skb_reserve(rxb->skb, 4);
3609
b481de9c
ZY		 3610 priv->alloc_rxb_skb++;
3611 list_del(element);
6440adb5
CB		 3612
3613 /* Get physical address of RB/SKB */
b481de9c
ZY		 3614 rxb->dma_addr =
3615 pci_map_single(priv->pci_dev, rxb->skb->data,
3616 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3617 list_add_tail(&rxb->list, &rxq->rx_free);
3618 rxq->free_count++;
3619 }
3620 spin_unlock_irqrestore(&rxq->lock, flags);
5c0eef96
MA		 3621}
3622
3623/*
3624 * this should be called while priv->lock is locked
3625 */
4fd1f841 3626static void __iwl3945_rx_replenish(void *data)
5c0eef96
MA		 3627{
3628 struct iwl3945_priv *priv = data;
3629
3630 iwl3945_rx_allocate(priv);
3631 iwl3945_rx_queue_restock(priv);
3632}
3633
3634
3635void iwl3945_rx_replenish(void *data)
3636{
3637 struct iwl3945_priv *priv = data;
3638 unsigned long flags;
3639
3640 iwl3945_rx_allocate(priv);
b481de9c
ZY		 3641
3642 spin_lock_irqsave(&priv->lock, flags);
bb8c093b 3643 iwl3945_rx_queue_restock(priv);
b481de9c
ZY		 3644 spin_unlock_irqrestore(&priv->lock, flags);
3645}
3646
3647/* Assumes that the skb field of the buffers in 'pool' is kept accurate.
9fbab516 3648 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
b481de9c
ZY		 3649 * This free routine walks the list of POOL entries and if SKB is set to
3650 * non NULL it is unmapped and freed
3651 */
bb8c093b 3652static void iwl3945_rx_queue_free(struct iwl3945_priv *priv, struct iwl3945_rx_queue *rxq)
b481de9c
ZY		 3653{
3654 int i;
3655 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
3656 if (rxq->pool[i].skb != NULL) {
3657 pci_unmap_single(priv->pci_dev,
3658 rxq->pool[i].dma_addr,
3659 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3660 dev_kfree_skb(rxq->pool[i].skb);
3661 }
3662 }
3663
3664 pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
3665 rxq->dma_addr);
3666 rxq->bd = NULL;
3667}
3668
bb8c093b 3669int iwl3945_rx_queue_alloc(struct iwl3945_priv *priv)
b481de9c 3670{
bb8c093b 3671 struct iwl3945_rx_queue *rxq = &priv->rxq;
b481de9c
ZY		 3672 struct pci_dev *dev = priv->pci_dev;
3673 int i;
3674
3675 spin_lock_init(&rxq->lock);
3676 INIT_LIST_HEAD(&rxq->rx_free);
3677 INIT_LIST_HEAD(&rxq->rx_used);
6440adb5
CB		 3678
3679 /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
b481de9c
ZY		 3680 rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
3681 if (!rxq->bd)
3682 return -ENOMEM;
6440adb5 3683
b481de9c
ZY		 3684 /* Fill the rx_used queue with _all_ of the Rx buffers */
3685 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
3686 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
6440adb5 3687
b481de9c
ZY		 3688 /* Set us so that we have processed and used all buffers, but have
3689 * not restocked the Rx queue with fresh buffers */
3690 rxq->read = rxq->write = 0;
3691 rxq->free_count = 0;
3692 rxq->need_update = 0;
3693 return 0;
3694}
3695
bb8c093b 3696void iwl3945_rx_queue_reset(struct iwl3945_priv *priv, struct iwl3945_rx_queue *rxq)
b481de9c
ZY		 3697{
3698 unsigned long flags;
3699 int i;
3700 spin_lock_irqsave(&rxq->lock, flags);
3701 INIT_LIST_HEAD(&rxq->rx_free);
3702 INIT_LIST_HEAD(&rxq->rx_used);
3703 /* Fill the rx_used queue with _all_ of the Rx buffers */
3704 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
3705 /* In the reset function, these buffers may have been allocated
3706 * to an SKB, so we need to unmap and free potential storage */
3707 if (rxq->pool[i].skb != NULL) {
3708 pci_unmap_single(priv->pci_dev,
3709 rxq->pool[i].dma_addr,
3710 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3711 priv->alloc_rxb_skb--;
3712 dev_kfree_skb(rxq->pool[i].skb);
3713 rxq->pool[i].skb = NULL;
3714 }
3715 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3716 }
3717
3718 /* Set us so that we have processed and used all buffers, but have
3719 * not restocked the Rx queue with fresh buffers */
3720 rxq->read = rxq->write = 0;
3721 rxq->free_count = 0;
3722 spin_unlock_irqrestore(&rxq->lock, flags);
3723}
3724
3725/* Convert linear signal-to-noise ratio into dB */
3726static u8 ratio2dB[100] = {
3727/* 0 1 2 3 4 5 6 7 8 9 */
3728 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
3729 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
3730 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
3731 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
3732 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
3733 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
3734 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
3735 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
3736 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
3737 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
3738};
3739
3740/* Calculates a relative dB value from a ratio of linear
3741 * (i.e. not dB) signal levels.
3742 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
bb8c093b 3743int iwl3945_calc_db_from_ratio(int sig_ratio)
b481de9c 3744{
221c80cf
AB		 3745 /* 1000:1 or higher just report as 60 dB */
3746 if (sig_ratio >= 1000)
b481de9c
ZY		 3747 return 60;
3748
221c80cf 3749 /* 100:1 or higher, divide by 10 and use table,
b481de9c 3750 * add 20 dB to make up for divide by 10 */
221c80cf 3751 if (sig_ratio >= 100)
3ac7f146 3752 return 20 + (int)ratio2dB[sig_ratio/10];
b481de9c
ZY		 3753
3754 /* We shouldn't see this */
3755 if (sig_ratio < 1)
3756 return 0;
3757
3758 /* Use table for ratios 1:1 - 99:1 */
3759 return (int)ratio2dB[sig_ratio];
3760}
3761
3762#define PERFECT_RSSI (-20) /* dBm */
3763#define WORST_RSSI (-95) /* dBm */
3764#define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
3765
3766/* Calculate an indication of rx signal quality (a percentage, not dBm!).
3767 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
3768 * about formulas used below. */
bb8c093b 3769int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
b481de9c
ZY		 3770{
3771 int sig_qual;
3772 int degradation = PERFECT_RSSI - rssi_dbm;
3773
3774 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
3775 * as indicator; formula is (signal dbm - noise dbm).
3776 * SNR at or above 40 is a great signal (100%).
3777 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
3778 * Weakest usable signal is usually 10 - 15 dB SNR. */
3779 if (noise_dbm) {
3780 if (rssi_dbm - noise_dbm >= 40)
3781 return 100;
3782 else if (rssi_dbm < noise_dbm)
3783 return 0;
3784 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
3785
3786 /* Else use just the signal level.
3787 * This formula is a least squares fit of data points collected and
3788 * compared with a reference system that had a percentage (%) display
3789 * for signal quality. */
3790 } else
3791 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
3792 (15 * RSSI_RANGE + 62 * degradation)) /
3793 (RSSI_RANGE * RSSI_RANGE);
3794
3795 if (sig_qual > 100)
3796 sig_qual = 100;
3797 else if (sig_qual < 1)
3798 sig_qual = 0;
3799
3800 return sig_qual;
3801}
3802
3803/**
9fbab516 3804 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
b481de9c
ZY		 3805 *
3806 * Uses the priv->rx_handlers callback function array to invoke
3807 * the appropriate handlers, including command responses,
3808 * frame-received notifications, and other notifications.
3809 */
bb8c093b 3810static void iwl3945_rx_handle(struct iwl3945_priv *priv)
b481de9c 3811{
bb8c093b
CH		 3812 struct iwl3945_rx_mem_buffer *rxb;
3813 struct iwl3945_rx_packet *pkt;
3814 struct iwl3945_rx_queue *rxq = &priv->rxq;
b481de9c
ZY		 3815 u32 r, i;
3816 int reclaim;
3817 unsigned long flags;
5c0eef96 3818 u8 fill_rx = 0;
d68ab680 3819 u32 count = 8;
b481de9c 3820
6440adb5
CB		 3821 /* uCode's read index (stored in shared DRAM) indicates the last Rx
3822 * buffer that the driver may process (last buffer filled by ucode). */
bb8c093b 3823 r = iwl3945_hw_get_rx_read(priv);
b481de9c
ZY		 3824 i = rxq->read;
3825
5c0eef96
MA		 3826 if (iwl3945_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
3827 fill_rx = 1;
b481de9c
ZY		 3828 /* Rx interrupt, but nothing sent from uCode */
3829 if (i == r)
3830 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
3831
3832 while (i != r) {
3833 rxb = rxq->queue[i];
3834
9fbab516 3835 /* If an RXB doesn't have a Rx queue slot associated with it,
b481de9c
ZY		 3836 * then a bug has been introduced in the queue refilling
3837 * routines -- catch it here */
3838 BUG_ON(rxb == NULL);
3839
3840 rxq->queue[i] = NULL;
3841
3842 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
3843 IWL_RX_BUF_SIZE,
3844 PCI_DMA_FROMDEVICE);
bb8c093b 3845 pkt = (struct iwl3945_rx_packet *)rxb->skb->data;
b481de9c
ZY		 3846
3847 /* Reclaim a command buffer only if this packet is a response
3848 * to a (driver-originated) command.
3849 * If the packet (e.g. Rx frame) originated from uCode,
3850 * there is no command buffer to reclaim.
3851 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
3852 * but apparently a few don't get set; catch them here. */
3853 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
3854 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
3855 (pkt->hdr.cmd != REPLY_TX);
3856
3857 /* Based on type of command response or notification,
3858 * handle those that need handling via function in
bb8c093b 3859 * rx_handlers table. See iwl3945_setup_rx_handlers() */
b481de9c
ZY		 3860 if (priv->rx_handlers[pkt->hdr.cmd]) {
3861 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
3862 "r = %d, i = %d, %s, 0x%02x\n", r, i,
3863 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
3864 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
3865 } else {
3866 /* No handling needed */
3867 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
3868 "r %d i %d No handler needed for %s, 0x%02x\n",
3869 r, i, get_cmd_string(pkt->hdr.cmd),
3870 pkt->hdr.cmd);
3871 }
3872
3873 if (reclaim) {
9fbab516
BC		 3874 /* Invoke any callbacks, transfer the skb to caller, and
3875 * fire off the (possibly) blocking iwl3945_send_cmd()
b481de9c
ZY		 3876 * as we reclaim the driver command queue */
3877 if (rxb && rxb->skb)
bb8c093b 3878 iwl3945_tx_cmd_complete(priv, rxb);
b481de9c
ZY		 3879 else
3880 IWL_WARNING("Claim null rxb?\n");
3881 }
3882
3883 /* For now we just don't re-use anything. We can tweak this
3884 * later to try and re-use notification packets and SKBs that
3885 * fail to Rx correctly */
3886 if (rxb->skb != NULL) {
3887 priv->alloc_rxb_skb--;
3888 dev_kfree_skb_any(rxb->skb);
3889 rxb->skb = NULL;
3890 }
3891
3892 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
3893 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3894 spin_lock_irqsave(&rxq->lock, flags);
3895 list_add_tail(&rxb->list, &priv->rxq.rx_used);
3896 spin_unlock_irqrestore(&rxq->lock, flags);
3897 i = (i + 1) & RX_QUEUE_MASK;
5c0eef96
MA		 3898 /* If there are a lot of unused frames,
3899 * restock the Rx queue so ucode won't assert. */
3900 if (fill_rx) {
3901 count++;
3902 if (count >= 8) {
3903 priv->rxq.read = i;
3904 __iwl3945_rx_replenish(priv);
3905 count = 0;
3906 }
3907 }
b481de9c
ZY		 3908 }
3909
3910 /* Backtrack one entry */
3911 priv->rxq.read = i;
bb8c093b 3912 iwl3945_rx_queue_restock(priv);
b481de9c
ZY		 3913}
3914
6440adb5
CB		 3915/**
3916 * iwl3945_tx_queue_update_write_ptr - Send new write index to hardware
3917 */
bb8c093b
CH		 3918static int iwl3945_tx_queue_update_write_ptr(struct iwl3945_priv *priv,
3919 struct iwl3945_tx_queue *txq)
b481de9c
ZY		 3920{
3921 u32 reg = 0;
3922 int rc = 0;
3923 int txq_id = txq->q.id;
3924
3925 if (txq->need_update == 0)
3926 return rc;
3927
3928 /* if we're trying to save power */
3929 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3930 /* wake up nic if it's powered down ...
3931 * uCode will wake up, and interrupt us again, so next
3932 * time we'll skip this part. */
bb8c093b 3933 reg = iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
b481de9c
ZY		 3934
3935 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3936 IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
bb8c093b 3937 iwl3945_set_bit(priv, CSR_GP_CNTRL,
b481de9c
ZY		 3938 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3939 return rc;
3940 }
3941
3942 /* restore this queue's parameters in nic hardware. */
bb8c093b 3943 rc = iwl3945_grab_nic_access(priv);
b481de9c
ZY		 3944 if (rc)
3945 return rc;
bb8c093b 3946 iwl3945_write_direct32(priv, HBUS_TARG_WRPTR,
fc4b6853 3947 txq->q.write_ptr | (txq_id << 8));
bb8c093b 3948 iwl3945_release_nic_access(priv);
b481de9c
ZY		 3949
3950 /* else not in power-save mode, uCode will never sleep when we're
3951 * trying to tx (during RFKILL, we're not trying to tx). */
3952 } else
bb8c093b 3953 iwl3945_write32(priv, HBUS_TARG_WRPTR,
fc4b6853 3954 txq->q.write_ptr | (txq_id << 8));
b481de9c
ZY		 3955
3956 txq->need_update = 0;
3957
3958 return rc;
3959}
3960
c8b0e6e1 3961#ifdef CONFIG_IWL3945_DEBUG
bb8c093b 3962static void iwl3945_print_rx_config_cmd(struct iwl3945_rxon_cmd *rxon)
b481de9c
ZY		 3963{
3964 IWL_DEBUG_RADIO("RX CONFIG:\n");
bb8c093b 3965 iwl3945_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
b481de9c
ZY		 3966 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
3967 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
3968 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
3969 le32_to_cpu(rxon->filter_flags));
3970 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
3971 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
3972 rxon->ofdm_basic_rates);
3973 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
e174961c
JB		 3974 IWL_DEBUG_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr);
3975 IWL_DEBUG_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
b481de9c
ZY		 3976 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
3977}
3978#endif
3979
bb8c093b 3980static void iwl3945_enable_interrupts(struct iwl3945_priv *priv)
b481de9c
ZY		 3981{
3982 IWL_DEBUG_ISR("Enabling interrupts\n");
3983 set_bit(STATUS_INT_ENABLED, &priv->status);
bb8c093b 3984 iwl3945_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
b481de9c
ZY		 3985}
3986
0359facc
MA		 3987
3988/* call this function to flush any scheduled tasklet */
3989static inline void iwl_synchronize_irq(struct iwl3945_priv *priv)
3990{
a96a27f9 3991 /* wait to make sure we flush pending tasklet*/
0359facc
MA		 3992 synchronize_irq(priv->pci_dev->irq);
3993 tasklet_kill(&priv->irq_tasklet);
3994}
3995
3996
bb8c093b 3997static inline void iwl3945_disable_interrupts(struct iwl3945_priv *priv)
b481de9c
ZY		 3998{
3999 clear_bit(STATUS_INT_ENABLED, &priv->status);
4000
4001 /* disable interrupts from uCode/NIC to host */
bb8c093b 4002 iwl3945_write32(priv, CSR_INT_MASK, 0x00000000);
b481de9c
ZY		 4003
4004 /* acknowledge/clear/reset any interrupts still pending
4005 * from uCode or flow handler (Rx/Tx DMA) */
bb8c093b
CH		 4006 iwl3945_write32(priv, CSR_INT, 0xffffffff);
4007 iwl3945_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
b481de9c
ZY		 4008 IWL_DEBUG_ISR("Disabled interrupts\n");
4009}
4010
4011static const char *desc_lookup(int i)
4012{
4013 switch (i) {
4014 case 1:
4015 return "FAIL";
4016 case 2:
4017 return "BAD_PARAM";
4018 case 3:
4019 return "BAD_CHECKSUM";
4020 case 4:
4021 return "NMI_INTERRUPT";
4022 case 5:
4023 return "SYSASSERT";
4024 case 6:
4025 return "FATAL_ERROR";
4026 }
4027
4028 return "UNKNOWN";
4029}
4030
4031#define ERROR_START_OFFSET (1 * sizeof(u32))
4032#define ERROR_ELEM_SIZE (7 * sizeof(u32))
4033
bb8c093b 4034static void iwl3945_dump_nic_error_log(struct iwl3945_priv *priv)
b481de9c
ZY		 4035{
4036 u32 i;
4037 u32 desc, time, count, base, data1;
4038 u32 blink1, blink2, ilink1, ilink2;
4039 int rc;
4040
4041 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4042
bb8c093b 4043 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
b481de9c
ZY		 4044 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4045 return;
4046 }
4047
bb8c093b 4048 rc = iwl3945_grab_nic_access(priv);
b481de9c
ZY		 4049 if (rc) {
4050 IWL_WARNING("Can not read from adapter at this time.\n");
4051 return;
4052 }
4053
bb8c093b 4054 count = iwl3945_read_targ_mem(priv, base);
b481de9c
ZY		 4055
4056 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4057 IWL_ERROR("Start IWL Error Log Dump:\n");
2acae16e 4058 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
b481de9c
ZY		 4059 }
4060
4061 IWL_ERROR("Desc Time asrtPC blink2 "
4062 "ilink1 nmiPC Line\n");
4063 for (i = ERROR_START_OFFSET;
4064 i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
4065 i += ERROR_ELEM_SIZE) {
bb8c093b 4066 desc = iwl3945_read_targ_mem(priv, base + i);
b481de9c 4067 time =
bb8c093b 4068 iwl3945_read_targ_mem(priv, base + i + 1 * sizeof(u32));
b481de9c 4069 blink1 =
bb8c093b 4070 iwl3945_read_targ_mem(priv, base + i + 2 * sizeof(u32));
b481de9c 4071 blink2 =
bb8c093b 4072 iwl3945_read_targ_mem(priv, base + i + 3 * sizeof(u32));
b481de9c 4073 ilink1 =
bb8c093b 4074 iwl3945_read_targ_mem(priv, base + i + 4 * sizeof(u32));
b481de9c 4075 ilink2 =
bb8c093b 4076 iwl3945_read_targ_mem(priv, base + i + 5 * sizeof(u32));
b481de9c 4077 data1 =
bb8c093b 4078 iwl3945_read_targ_mem(priv, base + i + 6 * sizeof(u32));
b481de9c
ZY		 4079
4080 IWL_ERROR
4081 ("%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
4082 desc_lookup(desc), desc, time, blink1, blink2,
4083 ilink1, ilink2, data1);
4084 }
4085
bb8c093b 4086 iwl3945_release_nic_access(priv);
b481de9c
ZY		 4087
4088}
4089
f58177b9 4090#define EVENT_START_OFFSET (6 * sizeof(u32))
b481de9c
ZY		 4091
4092/**
bb8c093b 4093 * iwl3945_print_event_log - Dump error event log to syslog
b481de9c 4094 *
bb8c093b 4095 * NOTE: Must be called with iwl3945_grab_nic_access() already obtained!
b481de9c 4096 */
bb8c093b 4097static void iwl3945_print_event_log(struct iwl3945_priv *priv, u32 start_idx,
b481de9c
ZY		 4098 u32 num_events, u32 mode)
4099{
4100 u32 i;
4101 u32 base; /* SRAM byte address of event log header */
4102 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4103 u32 ptr; /* SRAM byte address of log data */
4104 u32 ev, time, data; /* event log data */
4105
4106 if (num_events == 0)
4107 return;
4108
4109 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4110
4111 if (mode == 0)
4112 event_size = 2 * sizeof(u32);
4113 else
4114 event_size = 3 * sizeof(u32);
4115
4116 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4117
4118 /* "time" is actually "data" for mode 0 (no timestamp).
4119 * place event id # at far right for easier visual parsing. */
4120 for (i = 0; i < num_events; i++) {
bb8c093b 4121 ev = iwl3945_read_targ_mem(priv, ptr);
b481de9c 4122 ptr += sizeof(u32);
bb8c093b 4123 time = iwl3945_read_targ_mem(priv, ptr);
b481de9c
ZY		 4124 ptr += sizeof(u32);
4125 if (mode == 0)
4126 IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4127 else {
bb8c093b 4128 data = iwl3945_read_targ_mem(priv, ptr);
b481de9c
ZY		 4129 ptr += sizeof(u32);
4130 IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4131 }
4132 }
4133}
4134
bb8c093b 4135static void iwl3945_dump_nic_event_log(struct iwl3945_priv *priv)
b481de9c
ZY		 4136{
4137 int rc;
4138 u32 base; /* SRAM byte address of event log header */
4139 u32 capacity; /* event log capacity in # entries */
4140 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
4141 u32 num_wraps; /* # times uCode wrapped to top of log */
4142 u32 next_entry; /* index of next entry to be written by uCode */
4143 u32 size; /* # entries that we'll print */
4144
4145 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
bb8c093b 4146 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
b481de9c
ZY		 4147 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4148 return;
4149 }
4150
bb8c093b 4151 rc = iwl3945_grab_nic_access(priv);
b481de9c
ZY		 4152 if (rc) {
4153 IWL_WARNING("Can not read from adapter at this time.\n");
4154 return;
4155 }
4156
4157 /* event log header */
bb8c093b
CH		 4158 capacity = iwl3945_read_targ_mem(priv, base);
4159 mode = iwl3945_read_targ_mem(priv, base + (1 * sizeof(u32)));
4160 num_wraps = iwl3945_read_targ_mem(priv, base + (2 * sizeof(u32)));
4161 next_entry = iwl3945_read_targ_mem(priv, base + (3 * sizeof(u32)));
b481de9c
ZY		 4162
4163 size = num_wraps ? capacity : next_entry;
4164
4165 /* bail out if nothing in log */
4166 if (size == 0) {
583fab37 4167 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
bb8c093b 4168 iwl3945_release_nic_access(priv);
b481de9c
ZY		 4169 return;
4170 }
4171
583fab37 4172 IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
b481de9c
ZY		 4173 size, num_wraps);
4174
4175 /* if uCode has wrapped back to top of log, start at the oldest entry,
4176 * i.e the next one that uCode would fill. */
4177 if (num_wraps)
bb8c093b 4178 iwl3945_print_event_log(priv, next_entry,
b481de9c
ZY		 4179 capacity - next_entry, mode);
4180
4181 /* (then/else) start at top of log */
bb8c093b 4182 iwl3945_print_event_log(priv, 0, next_entry, mode);
b481de9c 4183
bb8c093b 4184 iwl3945_release_nic_access(priv);
b481de9c
ZY		 4185}
4186
4187/**
bb8c093b 4188 * iwl3945_irq_handle_error - called for HW or SW error interrupt from card
b481de9c 4189 */
bb8c093b 4190static void iwl3945_irq_handle_error(struct iwl3945_priv *priv)
b481de9c 4191{
bb8c093b 4192 /* Set the FW error flag -- cleared on iwl3945_down */
b481de9c
ZY		 4193 set_bit(STATUS_FW_ERROR, &priv->status);
4194
4195 /* Cancel currently queued command. */
4196 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4197
c8b0e6e1 4198#ifdef CONFIG_IWL3945_DEBUG
bb8c093b
CH		 4199 if (iwl3945_debug_level & IWL_DL_FW_ERRORS) {
4200 iwl3945_dump_nic_error_log(priv);
4201 iwl3945_dump_nic_event_log(priv);
4202 iwl3945_print_rx_config_cmd(&priv->staging_rxon);
b481de9c
ZY		 4203 }
4204#endif
4205
4206 wake_up_interruptible(&priv->wait_command_queue);
4207
4208 /* Keep the restart process from trying to send host
4209 * commands by clearing the INIT status bit */
4210 clear_bit(STATUS_READY, &priv->status);
4211
4212 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4213 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
4214 "Restarting adapter due to uCode error.\n");
4215
bb8c093b 4216 if (iwl3945_is_associated(priv)) {
b481de9c
ZY		 4217 memcpy(&priv->recovery_rxon, &priv->active_rxon,
4218 sizeof(priv->recovery_rxon));
4219 priv->error_recovering = 1;
4220 }
4221 queue_work(priv->workqueue, &priv->restart);
4222 }
4223}
4224
bb8c093b 4225static void iwl3945_error_recovery(struct iwl3945_priv *priv)
b481de9c
ZY		 4226{
4227 unsigned long flags;
4228
4229 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
4230 sizeof(priv->staging_rxon));
4231 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
bb8c093b 4232 iwl3945_commit_rxon(priv);
b481de9c 4233
bb8c093b 4234 iwl3945_add_station(priv, priv->bssid, 1, 0);
b481de9c
ZY		 4235
4236 spin_lock_irqsave(&priv->lock, flags);
4237 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
4238 priv->error_recovering = 0;
4239 spin_unlock_irqrestore(&priv->lock, flags);
4240}
4241
bb8c093b 4242static void iwl3945_irq_tasklet(struct iwl3945_priv *priv)
b481de9c
ZY		 4243{
4244 u32 inta, handled = 0;
4245 u32 inta_fh;
4246 unsigned long flags;
c8b0e6e1 4247#ifdef CONFIG_IWL3945_DEBUG
b481de9c
ZY		 4248 u32 inta_mask;
4249#endif
4250
4251 spin_lock_irqsave(&priv->lock, flags);
4252
4253 /* Ack/clear/reset pending uCode interrupts.
4254 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4255 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
bb8c093b
CH		 4256 inta = iwl3945_read32(priv, CSR_INT);
4257 iwl3945_write32(priv, CSR_INT, inta);
b481de9c
ZY		 4258
4259 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4260 * Any new interrupts that happen after this, either while we're
4261 * in this tasklet, or later, will show up in next ISR/tasklet. */
bb8c093b
CH		 4262 inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
4263 iwl3945_write32(priv, CSR_FH_INT_STATUS, inta_fh);
b481de9c 4264
c8b0e6e1 4265#ifdef CONFIG_IWL3945_DEBUG
bb8c093b 4266 if (iwl3945_debug_level & IWL_DL_ISR) {
9fbab516
BC		 4267 /* just for debug */
4268 inta_mask = iwl3945_read32(priv, CSR_INT_MASK);
b481de9c
ZY		 4269 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4270 inta, inta_mask, inta_fh);
4271 }
4272#endif
4273
4274 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4275 * atomic, make sure that inta covers all the interrupts that
4276 * we've discovered, even if FH interrupt came in just after
4277 * reading CSR_INT. */
6f83eaa1 4278 if (inta_fh & CSR39_FH_INT_RX_MASK)
b481de9c 4279 inta |= CSR_INT_BIT_FH_RX;
6f83eaa1 4280 if (inta_fh & CSR39_FH_INT_TX_MASK)
b481de9c
ZY		 4281 inta |= CSR_INT_BIT_FH_TX;
4282
4283 /* Now service all interrupt bits discovered above. */
4284 if (inta & CSR_INT_BIT_HW_ERR) {
4285 IWL_ERROR("Microcode HW error detected. Restarting.\n");
4286
4287 /* Tell the device to stop sending interrupts */
bb8c093b 4288 iwl3945_disable_interrupts(priv);
b481de9c 4289
bb8c093b 4290 iwl3945_irq_handle_error(priv);
b481de9c
ZY		 4291
4292 handled |= CSR_INT_BIT_HW_ERR;
4293
4294 spin_unlock_irqrestore(&priv->lock, flags);
4295
4296 return;
4297 }
4298
c8b0e6e1 4299#ifdef CONFIG_IWL3945_DEBUG
bb8c093b 4300 if (iwl3945_debug_level & (IWL_DL_ISR)) {
b481de9c 4301 /* NIC fires this, but we don't use it, redundant with WAKEUP */
25c03d8e
JP		 4302 if (inta & CSR_INT_BIT_SCD)
4303 IWL_DEBUG_ISR("Scheduler finished to transmit "
4304 "the frame/frames.\n");
b481de9c
ZY		 4305
4306 /* Alive notification via Rx interrupt will do the real work */
4307 if (inta & CSR_INT_BIT_ALIVE)
4308 IWL_DEBUG_ISR("Alive interrupt\n");
4309 }
4310#endif
4311 /* Safely ignore these bits for debug checks below */
25c03d8e 4312 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
b481de9c 4313
b481de9c
ZY		 4314 /* Error detected by uCode */
4315 if (inta & CSR_INT_BIT_SW_ERR) {
4316 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
4317 inta);
bb8c093b 4318 iwl3945_irq_handle_error(priv);
b481de9c
ZY		 4319 handled |= CSR_INT_BIT_SW_ERR;
4320 }
4321
4322 /* uCode wakes up after power-down sleep */
4323 if (inta & CSR_INT_BIT_WAKEUP) {
4324 IWL_DEBUG_ISR("Wakeup interrupt\n");
bb8c093b
CH		 4325 iwl3945_rx_queue_update_write_ptr(priv, &priv->rxq);
4326 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[0]);
4327 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[1]);
4328 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[2]);
4329 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[3]);
4330 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[4]);
4331 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[5]);
b481de9c
ZY		 4332
4333 handled |= CSR_INT_BIT_WAKEUP;
4334 }
4335
4336 /* All uCode command responses, including Tx command responses,
4337 * Rx "responses" (frame-received notification), and other
4338 * notifications from uCode come through here*/
4339 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
bb8c093b 4340 iwl3945_rx_handle(priv);
b481de9c
ZY		 4341 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
4342 }
4343
4344 if (inta & CSR_INT_BIT_FH_TX) {
4345 IWL_DEBUG_ISR("Tx interrupt\n");
4346
bb8c093b
CH		 4347 iwl3945_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
4348 if (!iwl3945_grab_nic_access(priv)) {
4349 iwl3945_write_direct32(priv,
b481de9c
ZY		 4350 FH_TCSR_CREDIT
4351 (ALM_FH_SRVC_CHNL), 0x0);
bb8c093b 4352 iwl3945_release_nic_access(priv);
b481de9c
ZY		 4353 }
4354 handled |= CSR_INT_BIT_FH_TX;
4355 }
4356
4357 if (inta & ~handled)
4358 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
4359
4360 if (inta & ~CSR_INI_SET_MASK) {
4361 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
4362 inta & ~CSR_INI_SET_MASK);
4363 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
4364 }
4365
4366 /* Re-enable all interrupts */
0359facc
MA		 4367 /* only Re-enable if disabled by irq */
4368 if (test_bit(STATUS_INT_ENABLED, &priv->status))
4369 iwl3945_enable_interrupts(priv);
b481de9c 4370
c8b0e6e1 4371#ifdef CONFIG_IWL3945_DEBUG
bb8c093b
CH		 4372 if (iwl3945_debug_level & (IWL_DL_ISR)) {
4373 inta = iwl3945_read32(priv, CSR_INT);
4374 inta_mask = iwl3945_read32(priv, CSR_INT_MASK);
4375 inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
b481de9c
ZY		 4376 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
4377 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
4378 }
4379#endif
4380 spin_unlock_irqrestore(&priv->lock, flags);
4381}
4382
bb8c093b 4383static irqreturn_t iwl3945_isr(int irq, void *data)
b481de9c 4384{
bb8c093b 4385 struct iwl3945_priv *priv = data;
b481de9c
ZY		 4386 u32 inta, inta_mask;
4387 u32 inta_fh;
4388 if (!priv)
4389 return IRQ_NONE;
4390
4391 spin_lock(&priv->lock);
4392
4393 /* Disable (but don't clear!) interrupts here to avoid
4394 * back-to-back ISRs and sporadic interrupts from our NIC.
4395 * If we have something to service, the tasklet will re-enable ints.
4396 * If we *don't* have something, we'll re-enable before leaving here. */
bb8c093b
CH		 4397 inta_mask = iwl3945_read32(priv, CSR_INT_MASK); /* just for debug */
4398 iwl3945_write32(priv, CSR_INT_MASK, 0x00000000);
b481de9c
ZY		 4399
4400 /* Discover which interrupts are active/pending */
bb8c093b
CH		 4401 inta = iwl3945_read32(priv, CSR_INT);
4402 inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
b481de9c
ZY		 4403
4404 /* Ignore interrupt if there's nothing in NIC to service.
4405 * This may be due to IRQ shared with another device,
4406 * or due to sporadic interrupts thrown from our NIC. */
4407 if (!inta && !inta_fh) {
4408 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
4409 goto none;
4410 }
4411
4412 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
4413 /* Hardware disappeared */
99df630c 4414 IWL_WARNING("HARDWARE GONE?? INTA == 0x%08x\n", inta);
cb4da1a3 4415 goto unplugged;
b481de9c
ZY		 4416 }
4417
4418 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4419 inta, inta_mask, inta_fh);
4420
25c03d8e
JP		 4421 inta &= ~CSR_INT_BIT_SCD;
4422
bb8c093b 4423 /* iwl3945_irq_tasklet() will service interrupts and re-enable them */
25c03d8e
JP		 4424 if (likely(inta || inta_fh))
4425 tasklet_schedule(&priv->irq_tasklet);
cb4da1a3 4426unplugged:
b481de9c
ZY		 4427 spin_unlock(&priv->lock);
4428
4429 return IRQ_HANDLED;
4430
4431 none:
4432 /* re-enable interrupts here since we don't have anything to service. */
0359facc
MA		 4433 /* only Re-enable if disabled by irq */
4434 if (test_bit(STATUS_INT_ENABLED, &priv->status))
4435 iwl3945_enable_interrupts(priv);
b481de9c
ZY		 4436 spin_unlock(&priv->lock);
4437 return IRQ_NONE;
4438}
4439
4440/************************** EEPROM BANDS ****************************
4441 *
bb8c093b 4442 * The iwl3945_eeprom_band definitions below provide the mapping from the
b481de9c
ZY		 4443 * EEPROM contents to the specific channel number supported for each
4444 * band.
4445 *
bb8c093b 4446 * For example, iwl3945_priv->eeprom.band_3_channels[4] from the band_3
b481de9c
ZY		 4447 * definition below maps to physical channel 42 in the 5.2GHz spectrum.
4448 * The specific geography and calibration information for that channel
4449 * is contained in the eeprom map itself.
4450 *
4451 * During init, we copy the eeprom information and channel map
4452 * information into priv->channel_info_24/52 and priv->channel_map_24/52
4453 *
4454 * channel_map_24/52 provides the index in the channel_info array for a
4455 * given channel. We have to have two separate maps as there is channel
4456 * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
4457 * band_2
4458 *
4459 * A value of 0xff stored in the channel_map indicates that the channel
4460 * is not supported by the hardware at all.
4461 *
4462 * A value of 0xfe in the channel_map indicates that the channel is not
4463 * valid for Tx with the current hardware. This means that
4464 * while the system can tune and receive on a given channel, it may not
4465 * be able to associate or transmit any frames on that
4466 * channel. There is no corresponding channel information for that
4467 * entry.
4468 *
4469 *********************************************************************/
4470
4471/* 2.4 GHz */
bb8c093b 4472static const u8 iwl3945_eeprom_band_1[14] = {
b481de9c
ZY		 4473 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
4474};
4475
4476/* 5.2 GHz bands */
9fbab516 4477static const u8 iwl3945_eeprom_band_2[] = { /* 4915-5080MHz */
b481de9c
ZY		 4478 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
4479};
4480
9fbab516 4481static const u8 iwl3945_eeprom_band_3[] = { /* 5170-5320MHz */
b481de9c
ZY		 4482 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
4483};
4484
bb8c093b 4485static const u8 iwl3945_eeprom_band_4[] = { /* 5500-5700MHz */
b481de9c
ZY		 4486 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
4487};
4488
bb8c093b 4489static const u8 iwl3945_eeprom_band_5[] = { /* 5725-5825MHz */
b481de9c
ZY		 4490 145, 149, 153, 157, 161, 165
4491};
4492
bb8c093b 4493static void iwl3945_init_band_reference(const struct iwl3945_priv *priv, int band,
b481de9c 4494 int *eeprom_ch_count,
bb8c093b 4495 const struct iwl3945_eeprom_channel
b481de9c
ZY		 4496 **eeprom_ch_info,
4497 const u8 **eeprom_ch_index)
4498{
4499 switch (band) {
4500 case 1: /* 2.4GHz band */
bb8c093b 4501 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_1);
b481de9c 4502 *eeprom_ch_info = priv->eeprom.band_1_channels;
bb8c093b 4503 *eeprom_ch_index = iwl3945_eeprom_band_1;
b481de9c 4504 break;
9fbab516 4505 case 2: /* 4.9GHz band */
bb8c093b 4506 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_2);
b481de9c 4507 *eeprom_ch_info = priv->eeprom.band_2_channels;
bb8c093b 4508 *eeprom_ch_index = iwl3945_eeprom_band_2;
b481de9c
ZY		 4509 break;
4510 case 3: /* 5.2GHz band */
bb8c093b 4511 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_3);
b481de9c 4512 *eeprom_ch_info = priv->eeprom.band_3_channels;
bb8c093b 4513 *eeprom_ch_index = iwl3945_eeprom_band_3;
b481de9c 4514 break;
9fbab516 4515 case 4: /* 5.5GHz band */
bb8c093b 4516 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_4);
b481de9c 4517 *eeprom_ch_info = priv->eeprom.band_4_channels;
bb8c093b 4518 *eeprom_ch_index = iwl3945_eeprom_band_4;
b481de9c 4519 break;
9fbab516 4520 case 5: /* 5.7GHz band */
bb8c093b 4521 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_5);
b481de9c 4522 *eeprom_ch_info = priv->eeprom.band_5_channels;
bb8c093b 4523 *eeprom_ch_index = iwl3945_eeprom_band_5;
b481de9c
ZY		 4524 break;
4525 default:
4526 BUG();
4527 return;
4528 }
4529}
4530
6440adb5
CB		 4531/**
4532 * iwl3945_get_channel_info - Find driver's private channel info
4533 *
4534 * Based on band and channel number.
4535 */
bb8c093b 4536const struct iwl3945_channel_info *iwl3945_get_channel_info(const struct iwl3945_priv *priv,
8318d78a 4537 enum ieee80211_band band, u16 channel)
b481de9c
ZY		 4538{
4539 int i;
4540
8318d78a
JB		 4541 switch (band) {
4542 case IEEE80211_BAND_5GHZ:
b481de9c
ZY		 4543 for (i = 14; i < priv->channel_count; i++) {
4544 if (priv->channel_info[i].channel == channel)
4545 return &priv->channel_info[i];
4546 }
4547 break;
4548
8318d78a 4549 case IEEE80211_BAND_2GHZ:
b481de9c
ZY		 4550 if (channel >= 1 && channel <= 14)
4551 return &priv->channel_info[channel - 1];
4552 break;
8318d78a
JB		 4553 case IEEE80211_NUM_BANDS:
4554 WARN_ON(1);
b481de9c
ZY		 4555 }
4556
4557 return NULL;
4558}
4559
4560#define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
4561 ? # x " " : "")
4562
6440adb5
CB		 4563/**
4564 * iwl3945_init_channel_map - Set up driver's info for all possible channels
4565 */
bb8c093b 4566static int iwl3945_init_channel_map(struct iwl3945_priv *priv)
b481de9c
ZY		 4567{
4568 int eeprom_ch_count = 0;
4569 const u8 *eeprom_ch_index = NULL;
bb8c093b 4570 const struct iwl3945_eeprom_channel *eeprom_ch_info = NULL;
b481de9c 4571 int band, ch;
bb8c093b 4572 struct iwl3945_channel_info *ch_info;
b481de9c
ZY		 4573
4574 if (priv->channel_count) {
4575 IWL_DEBUG_INFO("Channel map already initialized.\n");
4576 return 0;
4577 }
4578
4579 if (priv->eeprom.version < 0x2f) {
4580 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
4581 priv->eeprom.version);
4582 return -EINVAL;
4583 }
4584
4585 IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
4586
4587 priv->channel_count =
bb8c093b
CH		 4588 ARRAY_SIZE(iwl3945_eeprom_band_1) +
4589 ARRAY_SIZE(iwl3945_eeprom_band_2) +
4590 ARRAY_SIZE(iwl3945_eeprom_band_3) +
4591 ARRAY_SIZE(iwl3945_eeprom_band_4) +
4592 ARRAY_SIZE(iwl3945_eeprom_band_5);
b481de9c
ZY		 4593
4594 IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
4595
bb8c093b 4596 priv->channel_info = kzalloc(sizeof(struct iwl3945_channel_info) *
b481de9c
ZY		 4597 priv->channel_count, GFP_KERNEL);
4598 if (!priv->channel_info) {
4599 IWL_ERROR("Could not allocate channel_info\n");
4600 priv->channel_count = 0;
4601 return -ENOMEM;
4602 }
4603
4604 ch_info = priv->channel_info;
4605
4606 /* Loop through the 5 EEPROM bands adding them in order to the
4607 * channel map we maintain (that contains additional information than
4608 * what just in the EEPROM) */
4609 for (band = 1; band <= 5; band++) {
4610
bb8c093b 4611 iwl3945_init_band_reference(priv, band, &eeprom_ch_count,
b481de9c
ZY		 4612 &eeprom_ch_info, &eeprom_ch_index);
4613
4614 /* Loop through each band adding each of the channels */
4615 for (ch = 0; ch < eeprom_ch_count; ch++) {
4616 ch_info->channel = eeprom_ch_index[ch];
8318d78a
JB		 4617 ch_info->band = (band == 1) ? IEEE80211_BAND_2GHZ :
4618 IEEE80211_BAND_5GHZ;
b481de9c
ZY		 4619
4620 /* permanently store EEPROM's channel regulatory flags
4621 * and max power in channel info database. */
4622 ch_info->eeprom = eeprom_ch_info[ch];
4623
4624 /* Copy the run-time flags so they are there even on
4625 * invalid channels */
4626 ch_info->flags = eeprom_ch_info[ch].flags;
4627
4628 if (!(is_channel_valid(ch_info))) {
4629 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
4630 "No traffic\n",
4631 ch_info->channel,
4632 ch_info->flags,
4633 is_channel_a_band(ch_info) ?
4634 "5.2" : "2.4");
4635 ch_info++;
4636 continue;
4637 }
4638
4639 /* Initialize regulatory-based run-time data */
4640 ch_info->max_power_avg = ch_info->curr_txpow =
4641 eeprom_ch_info[ch].max_power_avg;
4642 ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
4643 ch_info->min_power = 0;
4644
fe7c4040 4645 IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
b481de9c
ZY		 4646 " %ddBm): Ad-Hoc %ssupported\n",
4647 ch_info->channel,
4648 is_channel_a_band(ch_info) ?
4649 "5.2" : "2.4",
8211ef78 4650 CHECK_AND_PRINT(VALID),
b481de9c
ZY		 4651 CHECK_AND_PRINT(IBSS),
4652 CHECK_AND_PRINT(ACTIVE),
4653 CHECK_AND_PRINT(RADAR),
4654 CHECK_AND_PRINT(WIDE),
b481de9c
ZY		 4655 CHECK_AND_PRINT(DFS),
4656 eeprom_ch_info[ch].flags,
4657 eeprom_ch_info[ch].max_power_avg,
4658 ((eeprom_ch_info[ch].
4659 flags & EEPROM_CHANNEL_IBSS)
4660 && !(eeprom_ch_info[ch].
4661 flags & EEPROM_CHANNEL_RADAR))
4662 ? "" : "not ");
4663
4664 /* Set the user_txpower_limit to the highest power
4665 * supported by any channel */
4666 if (eeprom_ch_info[ch].max_power_avg >
4667 priv->user_txpower_limit)
4668 priv->user_txpower_limit =
4669 eeprom_ch_info[ch].max_power_avg;
4670
4671 ch_info++;
4672 }
4673 }
4674
6440adb5 4675 /* Set up txpower settings in driver for all channels */
b481de9c
ZY		 4676 if (iwl3945_txpower_set_from_eeprom(priv))
4677 return -EIO;
4678
4679 return 0;
4680}
4681
849e0dce
RC		 4682/*
4683 * iwl3945_free_channel_map - undo allocations in iwl3945_init_channel_map
4684 */
4685static void iwl3945_free_channel_map(struct iwl3945_priv *priv)
4686{
4687 kfree(priv->channel_info);
4688 priv->channel_count = 0;
4689}
4690
b481de9c
ZY		 4691/* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
4692 * sending probe req. This should be set long enough to hear probe responses
4693 * from more than one AP. */
f9340520
AK		 4694#define IWL_ACTIVE_DWELL_TIME_24 (30) /* all times in msec */
4695#define IWL_ACTIVE_DWELL_TIME_52 (20)
4696
4697#define IWL_ACTIVE_DWELL_FACTOR_24GHZ (3)
4698#define IWL_ACTIVE_DWELL_FACTOR_52GHZ (2)
b481de9c
ZY		 4699
4700/* For faster active scanning, scan will move to the next channel if fewer than
4701 * PLCP_QUIET_THRESH packets are heard on this channel within
4702 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
4703 * time if it's a quiet channel (nothing responded to our probe, and there's
4704 * no other traffic).
4705 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
4706#define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
f9340520 4707#define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(10) /* msec */
b481de9c
ZY		 4708
4709/* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
4710 * Must be set longer than active dwell time.
4711 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
4712#define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
4713#define IWL_PASSIVE_DWELL_TIME_52 (10)
4714#define IWL_PASSIVE_DWELL_BASE (100)
4715#define IWL_CHANNEL_TUNE_TIME 5
4716
e720ce9d 4717#define IWL_SCAN_PROBE_MASK(n) (BIT(n) | (BIT(n) - BIT(1)))
f9340520 4718
8318d78a 4719static inline u16 iwl3945_get_active_dwell_time(struct iwl3945_priv *priv,
f9340520
AK		 4720 enum ieee80211_band band,
4721 u8 n_probes)
b481de9c 4722{
8318d78a 4723 if (band == IEEE80211_BAND_5GHZ)
f9340520
AK		 4724 return IWL_ACTIVE_DWELL_TIME_52 +
4725 IWL_ACTIVE_DWELL_FACTOR_52GHZ * (n_probes + 1);
b481de9c 4726 else
f9340520
AK		 4727 return IWL_ACTIVE_DWELL_TIME_24 +
4728 IWL_ACTIVE_DWELL_FACTOR_24GHZ * (n_probes + 1);
b481de9c
ZY		 4729}
4730
8318d78a
JB		 4731static u16 iwl3945_get_passive_dwell_time(struct iwl3945_priv *priv,
4732 enum ieee80211_band band)
b481de9c 4733{
8318d78a 4734 u16 passive = (band == IEEE80211_BAND_2GHZ) ?
b481de9c
ZY		 4735 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
4736 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
4737
bb8c093b 4738 if (iwl3945_is_associated(priv)) {
b481de9c
ZY		 4739 /* If we're associated, we clamp the maximum passive
4740 * dwell time to be 98% of the beacon interval (minus
4741 * 2 * channel tune time) */
4742 passive = priv->beacon_int;
4743 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
4744 passive = IWL_PASSIVE_DWELL_BASE;
4745 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
4746 }
4747
b481de9c
ZY		 4748 return passive;
4749}
4750
8318d78a
JB		 4751static int iwl3945_get_channels_for_scan(struct iwl3945_priv *priv,
4752 enum ieee80211_band band,
f9340520 4753 u8 is_active, u8 n_probes,
bb8c093b 4754 struct iwl3945_scan_channel *scan_ch)
b481de9c
ZY		 4755{
4756 const struct ieee80211_channel *channels = NULL;
8318d78a 4757 const struct ieee80211_supported_band *sband;
bb8c093b 4758 const struct iwl3945_channel_info *ch_info;
b481de9c
ZY		 4759 u16 passive_dwell = 0;
4760 u16 active_dwell = 0;
4761 int added, i;
4762
8318d78a
JB		 4763 sband = iwl3945_get_band(priv, band);
4764 if (!sband)
b481de9c
ZY		 4765 return 0;
4766
8318d78a 4767 channels = sband->channels;
b481de9c 4768
f9340520 4769 active_dwell = iwl3945_get_active_dwell_time(priv, band, n_probes);
8318d78a 4770 passive_dwell = iwl3945_get_passive_dwell_time(priv, band);
b481de9c 4771
8f4807a1
AK		 4772 if (passive_dwell <= active_dwell)
4773 passive_dwell = active_dwell + 1;
4774
8318d78a 4775 for (i = 0, added = 0; i < sband->n_channels; i++) {
182e2e66
JB		 4776 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
4777 continue;
4778
8318d78a 4779 scan_ch->channel = channels[i].hw_value;
b481de9c 4780
8318d78a 4781 ch_info = iwl3945_get_channel_info(priv, band, scan_ch->channel);
b481de9c 4782 if (!is_channel_valid(ch_info)) {
66b5004d 4783 IWL_DEBUG_SCAN("Channel %d is INVALID for this band.\n",
b481de9c
ZY		 4784 scan_ch->channel);
4785 continue;
4786 }
4787
4788 if (!is_active || is_channel_passive(ch_info) ||
8318d78a 4789 (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
b481de9c
ZY		 4790 scan_ch->type = 0; /* passive */
4791 else
4792 scan_ch->type = 1; /* active */
4793
f9340520
AK		 4794 if ((scan_ch->type & 1) && n_probes)
4795 scan_ch->type |= IWL_SCAN_PROBE_MASK(n_probes);
b481de9c 4796
b481de9c
ZY		 4797 scan_ch->active_dwell = cpu_to_le16(active_dwell);
4798 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
4799
9fbab516 4800 /* Set txpower levels to defaults */
b481de9c
ZY		 4801 scan_ch->tpc.dsp_atten = 110;
4802 /* scan_pwr_info->tpc.dsp_atten; */
4803
4804 /*scan_pwr_info->tpc.tx_gain; */
8318d78a 4805 if (band == IEEE80211_BAND_5GHZ)
b481de9c
ZY		 4806 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
4807 else {
4808 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
4809 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
9fbab516 4810 * power level:
8a1b0245 4811 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
b481de9c
ZY		 4812 */
4813 }
4814
4815 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
4816 scan_ch->channel,
4817 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
4818 (scan_ch->type & 1) ?
4819 active_dwell : passive_dwell);
4820
4821 scan_ch++;
4822 added++;
4823 }
4824
4825 IWL_DEBUG_SCAN("total channels to scan %d \n", added);
4826 return added;
4827}
4828
bb8c093b 4829static void iwl3945_init_hw_rates(struct iwl3945_priv *priv,
b481de9c
ZY		 4830 struct ieee80211_rate *rates)
4831{
4832 int i;
4833
4834 for (i = 0; i < IWL_RATE_COUNT; i++) {
8318d78a
JB		 4835 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
4836 rates[i].hw_value = i; /* Rate scaling will work on indexes */
4837 rates[i].hw_value_short = i;
4838 rates[i].flags = 0;
4839 if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
b481de9c 4840 /*
8318d78a 4841 * If CCK != 1M then set short preamble rate flag.
b481de9c 4842 */
bb8c093b 4843 rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
8318d78a 4844 0 : IEEE80211_RATE_SHORT_PREAMBLE;
b481de9c 4845 }
b481de9c
ZY		 4846 }
4847}
4848
4849/**
bb8c093b 4850 * iwl3945_init_geos - Initialize mac80211's geo/channel info based from eeprom
b481de9c 4851 */
bb8c093b 4852static int iwl3945_init_geos(struct iwl3945_priv *priv)
b481de9c 4853{
bb8c093b 4854 struct iwl3945_channel_info *ch;
8211ef78 4855 struct ieee80211_supported_band *sband;
b481de9c
ZY		 4856 struct ieee80211_channel *channels;
4857 struct ieee80211_channel *geo_ch;
4858 struct ieee80211_rate *rates;
4859 int i = 0;
b481de9c 4860
8318d78a
JB		 4861 if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
4862 priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
b481de9c
ZY		 4863 IWL_DEBUG_INFO("Geography modes already initialized.\n");
4864 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
4865 return 0;
4866 }
4867
b481de9c
ZY		 4868 channels = kzalloc(sizeof(struct ieee80211_channel) *
4869 priv->channel_count, GFP_KERNEL);
8318d78a 4870 if (!channels)
b481de9c 4871 return -ENOMEM;
b481de9c 4872
8211ef78 4873 rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
b481de9c
ZY		 4874 GFP_KERNEL);
4875 if (!rates) {
b481de9c
ZY		 4876 kfree(channels);
4877 return -ENOMEM;
4878 }
4879
b481de9c 4880 /* 5.2GHz channels start after the 2.4GHz channels */
8211ef78
TW		 4881 sband = &priv->bands[IEEE80211_BAND_5GHZ];
4882 sband->channels = &channels[ARRAY_SIZE(iwl3945_eeprom_band_1)];
4883 /* just OFDM */
4884 sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
4885 sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
4886
4887 sband = &priv->bands[IEEE80211_BAND_2GHZ];
4888 sband->channels = channels;
4889 /* OFDM & CCK */
4890 sband->bitrates = rates;
4891 sband->n_bitrates = IWL_RATE_COUNT;
b481de9c
ZY		 4892
4893 priv->ieee_channels = channels;
4894 priv->ieee_rates = rates;
4895
bb8c093b 4896 iwl3945_init_hw_rates(priv, rates);
b481de9c 4897
8211ef78 4898 for (i = 0; i < priv->channel_count; i++) {
b481de9c
ZY		 4899 ch = &priv->channel_info[i];
4900
8211ef78
TW		 4901 /* FIXME: might be removed if scan is OK*/
4902 if (!is_channel_valid(ch))
b481de9c 4903 continue;
b481de9c
ZY		 4904
4905 if (is_channel_a_band(ch))
8211ef78 4906 sband = &priv->bands[IEEE80211_BAND_5GHZ];
8318d78a 4907 else
8211ef78 4908 sband = &priv->bands[IEEE80211_BAND_2GHZ];
b481de9c 4909
8211ef78
TW		 4910 geo_ch = &sband->channels[sband->n_channels++];
4911
4912 geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel);
8318d78a
JB		 4913 geo_ch->max_power = ch->max_power_avg;
4914 geo_ch->max_antenna_gain = 0xff;
7b72304d 4915 geo_ch->hw_value = ch->channel;
b481de9c
ZY		 4916
4917 if (is_channel_valid(ch)) {
8318d78a
JB		 4918 if (!(ch->flags & EEPROM_CHANNEL_IBSS))
4919 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
b481de9c 4920
8318d78a
JB		 4921 if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
4922 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
b481de9c
ZY		 4923
4924 if (ch->flags & EEPROM_CHANNEL_RADAR)
8318d78a 4925 geo_ch->flags |= IEEE80211_CHAN_RADAR;
b481de9c
ZY		 4926
4927 if (ch->max_power_avg > priv->max_channel_txpower_limit)
4928 priv->max_channel_txpower_limit =
4929 ch->max_power_avg;
8211ef78 4930 } else {
8318d78a 4931 geo_ch->flags |= IEEE80211_CHAN_DISABLED;
8211ef78
TW		 4932 }
4933
4934 /* Save flags for reg domain usage */
4935 geo_ch->orig_flags = geo_ch->flags;
4936
4937 IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0%X\n",
4938 ch->channel, geo_ch->center_freq,
4939 is_channel_a_band(ch) ? "5.2" : "2.4",
4940 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
4941 "restricted" : "valid",
4942 geo_ch->flags);
b481de9c
ZY		 4943 }
4944
82b9a121
TW		 4945 if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
4946 priv->cfg->sku & IWL_SKU_A) {
b481de9c
ZY		 4947 printk(KERN_INFO DRV_NAME
4948 ": Incorrectly detected BG card as ABG. Please send "
4949 "your PCI ID 0x%04X:0x%04X to maintainer.\n",
4950 priv->pci_dev->device, priv->pci_dev->subsystem_device);
82b9a121 4951 priv->cfg->sku &= ~IWL_SKU_A;
b481de9c
ZY		 4952 }
4953
4954 printk(KERN_INFO DRV_NAME
4955 ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
8318d78a
JB		 4956 priv->bands[IEEE80211_BAND_2GHZ].n_channels,
4957 priv->bands[IEEE80211_BAND_5GHZ].n_channels);
b481de9c 4958
e0e0a67e
JL		 4959 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
4960 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
4961 &priv->bands[IEEE80211_BAND_2GHZ];
4962 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
4963 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
4964 &priv->bands[IEEE80211_BAND_5GHZ];
b481de9c 4965
b481de9c
ZY		 4966 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
4967
4968 return 0;
4969}
4970
849e0dce
RC		 4971/*
4972 * iwl3945_free_geos - undo allocations in iwl3945_init_geos
4973 */
4974static void iwl3945_free_geos(struct iwl3945_priv *priv)
4975{
849e0dce
RC		 4976 kfree(priv->ieee_channels);
4977 kfree(priv->ieee_rates);
4978 clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
4979}
4980
b481de9c
ZY		 4981/******************************************************************************
4982 *
4983 * uCode download functions
4984 *
4985 ******************************************************************************/
4986
bb8c093b 4987static void iwl3945_dealloc_ucode_pci(struct iwl3945_priv *priv)
b481de9c 4988{
98c92211
TW		 4989 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
4990 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
4991 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
4992 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
4993 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
4994 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
b481de9c
ZY		 4995}
4996
4997/**
bb8c093b 4998 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
b481de9c
ZY		 4999 * looking at all data.
5000 */
3ac7f146 5001static int iwl3945_verify_inst_full(struct iwl3945_priv *priv, __le32 *image, u32 len)
b481de9c
ZY		 5002{
5003 u32 val;
5004 u32 save_len = len;
5005 int rc = 0;
5006 u32 errcnt;
5007
5008 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5009
bb8c093b 5010 rc = iwl3945_grab_nic_access(priv);
b481de9c
ZY		 5011 if (rc)
5012 return rc;
5013
bb8c093b 5014 iwl3945_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
b481de9c
ZY		 5015
5016 errcnt = 0;
5017 for (; len > 0; len -= sizeof(u32), image++) {
5018 /* read data comes through single port, auto-incr addr */
5019 /* NOTE: Use the debugless read so we don't flood kernel log
5020 * if IWL_DL_IO is set */
bb8c093b 5021 val = _iwl3945_read_direct32(priv, HBUS_TARG_MEM_RDAT);
b481de9c
ZY		 5022 if (val != le32_to_cpu(*image)) {
5023 IWL_ERROR("uCode INST section is invalid at "
5024 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5025 save_len - len, val, le32_to_cpu(*image));
5026 rc = -EIO;
5027 errcnt++;
5028 if (errcnt >= 20)
5029 break;
5030 }
5031 }
5032
bb8c093b 5033 iwl3945_release_nic_access(priv);
b481de9c
ZY		 5034
5035 if (!errcnt)
bc434dd2 5036 IWL_DEBUG_INFO("ucode image in INSTRUCTION memory is good\n");
b481de9c
ZY		 5037
5038 return rc;
5039}
5040
5041
5042/**
bb8c093b 5043 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
b481de9c
ZY		 5044 * using sample data 100 bytes apart. If these sample points are good,
5045 * it's a pretty good bet that everything between them is good, too.
5046 */
bb8c093b 5047static int iwl3945_verify_inst_sparse(struct iwl3945_priv *priv, __le32 *image, u32 len)
b481de9c
ZY		 5048{
5049 u32 val;
5050 int rc = 0;
5051 u32 errcnt = 0;
5052 u32 i;
5053
5054 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5055
bb8c093b 5056 rc = iwl3945_grab_nic_access(priv);
b481de9c
ZY		 5057 if (rc)
5058 return rc;
5059
5060 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
5061 /* read data comes through single port, auto-incr addr */
5062 /* NOTE: Use the debugless read so we don't flood kernel log
5063 * if IWL_DL_IO is set */
bb8c093b 5064 iwl3945_write_direct32(priv, HBUS_TARG_MEM_RADDR,
b481de9c 5065 i + RTC_INST_LOWER_BOUND);
bb8c093b 5066 val = _iwl3945_read_direct32(priv, HBUS_TARG_MEM_RDAT);
b481de9c
ZY		 5067 if (val != le32_to_cpu(*image)) {
5068#if 0 /* Enable this if you want to see details */
5069 IWL_ERROR("uCode INST section is invalid at "
5070 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5071 i, val, *image);
5072#endif
5073 rc = -EIO;
5074 errcnt++;
5075 if (errcnt >= 3)
5076 break;
5077 }
5078 }
5079
bb8c093b 5080 iwl3945_release_nic_access(priv);
b481de9c
ZY		 5081
5082 return rc;
5083}
5084
5085
5086/**
bb8c093b 5087 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
b481de9c
ZY		 5088 * and verify its contents
5089 */
bb8c093b 5090static int iwl3945_verify_ucode(struct iwl3945_priv *priv)
b481de9c
ZY		 5091{
5092 __le32 *image;
5093 u32 len;
5094 int rc = 0;
5095
5096 /* Try bootstrap */
5097 image = (__le32 *)priv->ucode_boot.v_addr;
5098 len = priv->ucode_boot.len;
bb8c093b 5099 rc = iwl3945_verify_inst_sparse(priv, image, len);
b481de9c
ZY		 5100 if (rc == 0) {
5101 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5102 return 0;
5103 }
5104
5105 /* Try initialize */
5106 image = (__le32 *)priv->ucode_init.v_addr;
5107 len = priv->ucode_init.len;
bb8c093b 5108 rc = iwl3945_verify_inst_sparse(priv, image, len);
b481de9c
ZY		 5109 if (rc == 0) {
5110 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5111 return 0;
5112 }
5113
5114 /* Try runtime/protocol */
5115 image = (__le32 *)priv->ucode_code.v_addr;
5116 len = priv->ucode_code.len;
bb8c093b 5117 rc = iwl3945_verify_inst_sparse(priv, image, len);
b481de9c
ZY		 5118 if (rc == 0) {
5119 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5120 return 0;
5121 }
5122
5123 IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5124
9fbab516
BC		 5125 /* Since nothing seems to match, show first several data entries in
5126 * instruction SRAM, so maybe visual inspection will give a clue.
5127 * Selection of bootstrap image (vs. other images) is arbitrary. */
b481de9c
ZY		 5128 image = (__le32 *)priv->ucode_boot.v_addr;
5129 len = priv->ucode_boot.len;
bb8c093b 5130 rc = iwl3945_verify_inst_full(priv, image, len);
b481de9c
ZY		 5131
5132 return rc;
5133}
5134
5135
5136/* check contents of special bootstrap uCode SRAM */
bb8c093b 5137static int iwl3945_verify_bsm(struct iwl3945_priv *priv)
b481de9c
ZY		 5138{
5139 __le32 *image = priv->ucode_boot.v_addr;
5140 u32 len = priv->ucode_boot.len;
5141 u32 reg;
5142 u32 val;
5143
5144 IWL_DEBUG_INFO("Begin verify bsm\n");
5145
5146 /* verify BSM SRAM contents */
bb8c093b 5147 val = iwl3945_read_prph(priv, BSM_WR_DWCOUNT_REG);
b481de9c
ZY		 5148 for (reg = BSM_SRAM_LOWER_BOUND;
5149 reg < BSM_SRAM_LOWER_BOUND + len;
3ac7f146 5150 reg += sizeof(u32), image++) {
bb8c093b 5151 val = iwl3945_read_prph(priv, reg);
b481de9c
ZY		 5152 if (val != le32_to_cpu(*image)) {
5153 IWL_ERROR("BSM uCode verification failed at "
5154 "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
5155 BSM_SRAM_LOWER_BOUND,
5156 reg - BSM_SRAM_LOWER_BOUND, len,
5157 val, le32_to_cpu(*image));
5158 return -EIO;
5159 }
5160 }
5161
5162 IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
5163
5164 return 0;
5165}
5166
5167/**
bb8c093b 5168 * iwl3945_load_bsm - Load bootstrap instructions
b481de9c
ZY		 5169 *
5170 * BSM operation:
5171 *
5172 * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
5173 * in special SRAM that does not power down during RFKILL. When powering back
5174 * up after power-saving sleeps (or during initial uCode load), the BSM loads
5175 * the bootstrap program into the on-board processor, and starts it.
5176 *
5177 * The bootstrap program loads (via DMA) instructions and data for a new
5178 * program from host DRAM locations indicated by the host driver in the
5179 * BSM_DRAM_* registers. Once the new program is loaded, it starts
5180 * automatically.
5181 *
5182 * When initializing the NIC, the host driver points the BSM to the
5183 * "initialize" uCode image. This uCode sets up some internal data, then
5184 * notifies host via "initialize alive" that it is complete.
5185 *
5186 * The host then replaces the BSM_DRAM_* pointer values to point to the
5187 * normal runtime uCode instructions and a backup uCode data cache buffer
5188 * (filled initially with starting data values for the on-board processor),
5189 * then triggers the "initialize" uCode to load and launch the runtime uCode,
5190 * which begins normal operation.
5191 *
5192 * When doing a power-save shutdown, runtime uCode saves data SRAM into
5193 * the backup data cache in DRAM before SRAM is powered down.
5194 *
5195 * When powering back up, the BSM loads the bootstrap program. This reloads
5196 * the runtime uCode instructions and the backup data cache into SRAM,
5197 * and re-launches the runtime uCode from where it left off.
5198 */
bb8c093b 5199static int iwl3945_load_bsm(struct iwl3945_priv *priv)
b481de9c
ZY		 5200{
5201 __le32 *image = priv->ucode_boot.v_addr;
5202 u32 len = priv->ucode_boot.len;
5203 dma_addr_t pinst;
5204 dma_addr_t pdata;
5205 u32 inst_len;
5206 u32 data_len;
5207 int rc;
5208 int i;
5209 u32 done;
5210 u32 reg_offset;
5211
5212 IWL_DEBUG_INFO("Begin load bsm\n");
5213
5214 /* make sure bootstrap program is no larger than BSM's SRAM size */
5215 if (len > IWL_MAX_BSM_SIZE)
5216 return -EINVAL;
5217
5218 /* Tell bootstrap uCode where to find the "Initialize" uCode
9fbab516 5219 * in host DRAM ... host DRAM physical address bits 31:0 for 3945.
bb8c093b 5220 * NOTE: iwl3945_initialize_alive_start() will replace these values,
b481de9c
ZY		 5221 * after the "initialize" uCode has run, to point to
5222 * runtime/protocol instructions and backup data cache. */
5223 pinst = priv->ucode_init.p_addr;
5224 pdata = priv->ucode_init_data.p_addr;
5225 inst_len = priv->ucode_init.len;
5226 data_len = priv->ucode_init_data.len;
5227
bb8c093b 5228 rc = iwl3945_grab_nic_access(priv);
b481de9c
ZY		 5229 if (rc)
5230 return rc;
5231
bb8c093b
CH		 5232 iwl3945_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5233 iwl3945_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5234 iwl3945_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
5235 iwl3945_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
b481de9c
ZY		 5236
5237 /* Fill BSM memory with bootstrap instructions */
5238 for (reg_offset = BSM_SRAM_LOWER_BOUND;
5239 reg_offset < BSM_SRAM_LOWER_BOUND + len;
5240 reg_offset += sizeof(u32), image++)
bb8c093b 5241 _iwl3945_write_prph(priv, reg_offset,
b481de9c
ZY		 5242 le32_to_cpu(*image));
5243
bb8c093b 5244 rc = iwl3945_verify_bsm(priv);
b481de9c 5245 if (rc) {
bb8c093b 5246 iwl3945_release_nic_access(priv);
b481de9c
ZY		 5247 return rc;
5248 }
5249
5250 /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
bb8c093b
CH		 5251 iwl3945_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
5252 iwl3945_write_prph(priv, BSM_WR_MEM_DST_REG,
b481de9c 5253 RTC_INST_LOWER_BOUND);
bb8c093b 5254 iwl3945_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
b481de9c
ZY		 5255
5256 /* Load bootstrap code into instruction SRAM now,
5257 * to prepare to load "initialize" uCode */
bb8c093b 5258 iwl3945_write_prph(priv, BSM_WR_CTRL_REG,
b481de9c
ZY		 5259 BSM_WR_CTRL_REG_BIT_START);
5260
5261 /* Wait for load of bootstrap uCode to finish */
5262 for (i = 0; i < 100; i++) {
bb8c093b 5263 done = iwl3945_read_prph(priv, BSM_WR_CTRL_REG);
b481de9c
ZY		 5264 if (!(done & BSM_WR_CTRL_REG_BIT_START))
5265 break;
5266 udelay(10);
5267 }
5268 if (i < 100)
5269 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
5270 else {
5271 IWL_ERROR("BSM write did not complete!\n");
5272 return -EIO;
5273 }
5274
5275 /* Enable future boot loads whenever power management unit triggers it
5276 * (e.g. when powering back up after power-save shutdown) */
bb8c093b 5277 iwl3945_write_prph(priv, BSM_WR_CTRL_REG,
b481de9c
ZY		 5278 BSM_WR_CTRL_REG_BIT_START_EN);
5279
bb8c093b 5280 iwl3945_release_nic_access(priv);
b481de9c
ZY		 5281
5282 return 0;
5283}
5284
bb8c093b 5285static void iwl3945_nic_start(struct iwl3945_priv *priv)
b481de9c
ZY		 5286{
5287 /* Remove all resets to allow NIC to operate */
bb8c093b 5288 iwl3945_write32(priv, CSR_RESET, 0);
b481de9c
ZY		 5289}
5290
5291/**
bb8c093b 5292 * iwl3945_read_ucode - Read uCode images from disk file.
b481de9c
ZY		 5293 *
5294 * Copy into buffers for card to fetch via bus-mastering
5295 */
bb8c093b 5296static int iwl3945_read_ucode(struct iwl3945_priv *priv)
b481de9c 5297{
bb8c093b 5298 struct iwl3945_ucode *ucode;
90e759d1 5299 int ret = 0;
b481de9c
ZY		 5300 const struct firmware *ucode_raw;
5301 /* firmware file name contains uCode/driver compatibility version */
4bf775cd 5302 const char *name = priv->cfg->fw_name;
b481de9c
ZY		 5303 u8 *src;
5304 size_t len;
c02b3acd 5305 u32 inst_size, data_size, init_size, init_data_size, boot_size;
b481de9c
ZY		 5306
5307 /* Ask kernel firmware_class module to get the boot firmware off disk.
5308 * request_firmware() is synchronous, file is in memory on return. */
90e759d1
TW		 5309 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
5310 if (ret < 0) {
5311 IWL_ERROR("%s firmware file req failed: Reason %d\n",
5312 name, ret);
b481de9c
ZY		 5313 goto error;
5314 }
5315
5316 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
5317 name, ucode_raw->size);
5318
5319 /* Make sure that we got at least our header! */
5320 if (ucode_raw->size < sizeof(*ucode)) {
5321 IWL_ERROR("File size way too small!\n");
90e759d1 5322 ret = -EINVAL;
b481de9c
ZY		 5323 goto err_release;
5324 }
5325
5326 /* Data from ucode file: header followed by uCode images */
5327 ucode = (void *)ucode_raw->data;
5328
c02b3acd 5329 priv->ucode_ver = le32_to_cpu(ucode->ver);
b481de9c
ZY		 5330 inst_size = le32_to_cpu(ucode->inst_size);
5331 data_size = le32_to_cpu(ucode->data_size);
5332 init_size = le32_to_cpu(ucode->init_size);
5333 init_data_size = le32_to_cpu(ucode->init_data_size);
5334 boot_size = le32_to_cpu(ucode->boot_size);
5335
c02b3acd
CR		 5336 IWL_DEBUG_INFO("f/w package hdr ucode version raw = 0x%x\n",
5337 priv->ucode_ver);
5338 IWL_DEBUG_INFO("f/w package hdr ucode version = %u.%u.%u.%u\n",
5339 IWL_UCODE_MAJOR(priv->ucode_ver),
5340 IWL_UCODE_MINOR(priv->ucode_ver),
5341 IWL_UCODE_API(priv->ucode_ver),
5342 IWL_UCODE_SERIAL(priv->ucode_ver));
bc434dd2
IS		 5343 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n", inst_size);
5344 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n", data_size);
5345 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n", init_size);
5346 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n", init_data_size);
5347 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n", boot_size);
b481de9c
ZY		 5348
5349 /* Verify size of file vs. image size info in file's header */
5350 if (ucode_raw->size < sizeof(*ucode) +
5351 inst_size + data_size + init_size +
5352 init_data_size + boot_size) {
5353
5354 IWL_DEBUG_INFO("uCode file size %d too small\n",
5355 (int)ucode_raw->size);
90e759d1 5356 ret = -EINVAL;
b481de9c
ZY		 5357 goto err_release;
5358 }
5359
5360 /* Verify that uCode images will fit in card's SRAM */
5361 if (inst_size > IWL_MAX_INST_SIZE) {
90e759d1
TW		 5362 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
5363 inst_size);
5364 ret = -EINVAL;
b481de9c
ZY		 5365 goto err_release;
5366 }
5367
5368 if (data_size > IWL_MAX_DATA_SIZE) {
90e759d1
TW		 5369 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
5370 data_size);
5371 ret = -EINVAL;
b481de9c
ZY		 5372 goto err_release;
5373 }
5374 if (init_size > IWL_MAX_INST_SIZE) {
90e759d1
TW		 5375 IWL_DEBUG_INFO("uCode init instr len %d too large to fit in\n",
5376 init_size);
5377 ret = -EINVAL;
b481de9c
ZY		 5378 goto err_release;
5379 }
5380 if (init_data_size > IWL_MAX_DATA_SIZE) {
90e759d1
TW		 5381 IWL_DEBUG_INFO("uCode init data len %d too large to fit in\n",
5382 init_data_size);
5383 ret = -EINVAL;
b481de9c
ZY		 5384 goto err_release;
5385 }
5386 if (boot_size > IWL_MAX_BSM_SIZE) {
90e759d1
TW		 5387 IWL_DEBUG_INFO("uCode boot instr len %d too large to fit in\n",
5388 boot_size);
5389 ret = -EINVAL;
b481de9c
ZY		 5390 goto err_release;
5391 }
5392
5393 /* Allocate ucode buffers for card's bus-master loading ... */
5394
5395 /* Runtime instructions and 2 copies of data:
5396 * 1) unmodified from disk
5397 * 2) backup cache for save/restore during power-downs */
5398 priv->ucode_code.len = inst_size;
98c92211 5399 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
b481de9c
ZY		 5400
5401 priv->ucode_data.len = data_size;
98c92211 5402 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
b481de9c
ZY		 5403
5404 priv->ucode_data_backup.len = data_size;
98c92211 5405 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
b481de9c 5406
90e759d1
TW		 5407 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
5408 !priv->ucode_data_backup.v_addr)
5409 goto err_pci_alloc;
b481de9c
ZY		 5410
5411 /* Initialization instructions and data */
90e759d1
TW		 5412 if (init_size && init_data_size) {
5413 priv->ucode_init.len = init_size;
98c92211 5414 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
90e759d1
TW		 5415
5416 priv->ucode_init_data.len = init_data_size;
98c92211 5417 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
90e759d1
TW		 5418
5419 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
5420 goto err_pci_alloc;
5421 }
b481de9c
ZY		 5422
5423 /* Bootstrap (instructions only, no data) */
90e759d1
TW		 5424 if (boot_size) {
5425 priv->ucode_boot.len = boot_size;
98c92211 5426 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
b481de9c 5427
90e759d1
TW		 5428 if (!priv->ucode_boot.v_addr)
5429 goto err_pci_alloc;
5430 }
b481de9c
ZY		 5431
5432 /* Copy images into buffers for card's bus-master reads ... */
5433
5434 /* Runtime instructions (first block of data in file) */
5435 src = &ucode->data[0];
5436 len = priv->ucode_code.len;
90e759d1 5437 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
b481de9c
ZY		 5438 memcpy(priv->ucode_code.v_addr, src, len);
5439 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
5440 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
5441
5442 /* Runtime data (2nd block)
bb8c093b 5443 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
b481de9c
ZY		 5444 src = &ucode->data[inst_size];
5445 len = priv->ucode_data.len;
90e759d1 5446 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
b481de9c
ZY		 5447 memcpy(priv->ucode_data.v_addr, src, len);
5448 memcpy(priv->ucode_data_backup.v_addr, src, len);
5449
5450 /* Initialization instructions (3rd block) */
5451 if (init_size) {
5452 src = &ucode->data[inst_size + data_size];
5453 len = priv->ucode_init.len;
90e759d1
TW		 5454 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
5455 len);
b481de9c
ZY		 5456 memcpy(priv->ucode_init.v_addr, src, len);
5457 }
5458
5459 /* Initialization data (4th block) */
5460 if (init_data_size) {
5461 src = &ucode->data[inst_size + data_size + init_size];
5462 len = priv->ucode_init_data.len;
5463 IWL_DEBUG_INFO("Copying (but not loading) init data len %d\n",
5464 (int)len);
5465 memcpy(priv->ucode_init_data.v_addr, src, len);
5466 }
5467
5468 /* Bootstrap instructions (5th block) */
5469 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
5470 len = priv->ucode_boot.len;
5471 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %d\n",
5472 (int)len);
5473 memcpy(priv->ucode_boot.v_addr, src, len);
5474
5475 /* We have our copies now, allow OS release its copies */
5476 release_firmware(ucode_raw);
5477 return 0;
5478
5479 err_pci_alloc:
5480 IWL_ERROR("failed to allocate pci memory\n");
90e759d1 5481 ret = -ENOMEM;
bb8c093b 5482 iwl3945_dealloc_ucode_pci(priv);
b481de9c
ZY		 5483
5484 err_release:
5485 release_firmware(ucode_raw);
5486
5487 error:
90e759d1 5488 return ret;
b481de9c
ZY		 5489}
5490
5491
5492/**
bb8c093b 5493 * iwl3945_set_ucode_ptrs - Set uCode address location
b481de9c
ZY		 5494 *
5495 * Tell initialization uCode where to find runtime uCode.
5496 *
5497 * BSM registers initially contain pointers to initialization uCode.
5498 * We need to replace them to load runtime uCode inst and data,
5499 * and to save runtime data when powering down.
5500 */
bb8c093b 5501static int iwl3945_set_ucode_ptrs(struct iwl3945_priv *priv)
b481de9c
ZY		 5502{
5503 dma_addr_t pinst;
5504 dma_addr_t pdata;
5505 int rc = 0;
5506 unsigned long flags;
5507
5508 /* bits 31:0 for 3945 */
5509 pinst = priv->ucode_code.p_addr;
5510 pdata = priv->ucode_data_backup.p_addr;
5511
5512 spin_lock_irqsave(&priv->lock, flags);
bb8c093b 5513 rc = iwl3945_grab_nic_access(priv);
b481de9c
ZY		 5514 if (rc) {
5515 spin_unlock_irqrestore(&priv->lock, flags);
5516 return rc;
5517 }
5518
5519 /* Tell bootstrap uCode where to find image to load */
bb8c093b
CH		 5520 iwl3945_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5521 iwl3945_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5522 iwl3945_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
b481de9c
ZY		 5523 priv->ucode_data.len);
5524
a96a27f9 5525 /* Inst byte count must be last to set up, bit 31 signals uCode
b481de9c 5526 * that all new ptr/size info is in place */
bb8c093b 5527 iwl3945_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
b481de9c
ZY		 5528 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
5529
bb8c093b 5530 iwl3945_release_nic_access(priv);
b481de9c
ZY		 5531
5532 spin_unlock_irqrestore(&priv->lock, flags);
5533
5534 IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
5535
5536 return rc;
5537}
5538
5539/**
bb8c093b 5540 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
b481de9c
ZY		 5541 *
5542 * Called after REPLY_ALIVE notification received from "initialize" uCode.
5543 *
b481de9c 5544 * Tell "initialize" uCode to go ahead and load the runtime uCode.
9fbab516 5545 */
bb8c093b 5546static void iwl3945_init_alive_start(struct iwl3945_priv *priv)
b481de9c
ZY		 5547{
5548 /* Check alive response for "valid" sign from uCode */
5549 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
5550 /* We had an error bringing up the hardware, so take it
5551 * all the way back down so we can try again */
5552 IWL_DEBUG_INFO("Initialize Alive failed.\n");
5553 goto restart;
5554 }
5555
5556 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
5557 * This is a paranoid check, because we would not have gotten the
5558 * "initialize" alive if code weren't properly loaded. */
bb8c093b 5559 if (iwl3945_verify_ucode(priv)) {
b481de9c
ZY		 5560 /* Runtime instruction load was bad;
5561 * take it all the way back down so we can try again */
5562 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
5563 goto restart;
5564 }
5565
5566 /* Send pointers to protocol/runtime uCode image ... init code will
5567 * load and launch runtime uCode, which will send us another "Alive"
5568 * notification. */
5569 IWL_DEBUG_INFO("Initialization Alive received.\n");
bb8c093b 5570 if (iwl3945_set_ucode_ptrs(priv)) {
b481de9c
ZY		 5571 /* Runtime instruction load won't happen;
5572 * take it all the way back down so we can try again */
5573 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
5574 goto restart;
5575 }
5576 return;
5577
5578 restart:
5579 queue_work(priv->workqueue, &priv->restart);
5580}
5581
5582
9bdf5eca
MA		 5583/* temporary */
5584static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw,
5585 struct sk_buff *skb);
5586
b481de9c 5587/**
bb8c093b 5588 * iwl3945_alive_start - called after REPLY_ALIVE notification received
b481de9c 5589 * from protocol/runtime uCode (initialization uCode's
bb8c093b 5590 * Alive gets handled by iwl3945_init_alive_start()).
b481de9c 5591 */
bb8c093b 5592static void iwl3945_alive_start(struct iwl3945_priv *priv)
b481de9c
ZY		 5593{
5594 int rc = 0;
5595 int thermal_spin = 0;
5596 u32 rfkill;
5597
5598 IWL_DEBUG_INFO("Runtime Alive received.\n");
5599
5600 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
5601 /* We had an error bringing up the hardware, so take it
5602 * all the way back down so we can try again */
5603 IWL_DEBUG_INFO("Alive failed.\n");
5604 goto restart;
5605 }
5606
5607 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
5608 * This is a paranoid check, because we would not have gotten the
5609 * "runtime" alive if code weren't properly loaded. */
bb8c093b 5610 if (iwl3945_verify_ucode(priv)) {
b481de9c
ZY		 5611 /* Runtime instruction load was bad;
5612 * take it all the way back down so we can try again */
5613 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
5614 goto restart;
5615 }
5616
bb8c093b 5617 iwl3945_clear_stations_table(priv);
b481de9c 5618
bb8c093b 5619 rc = iwl3945_grab_nic_access(priv);
b481de9c 5620 if (rc) {
a96a27f9 5621 IWL_WARNING("Can not read RFKILL status from adapter\n");
b481de9c
ZY		 5622 return;
5623 }
5624
bb8c093b 5625 rfkill = iwl3945_read_prph(priv, APMG_RFKILL_REG);
b481de9c 5626 IWL_DEBUG_INFO("RFKILL status: 0x%x\n", rfkill);
bb8c093b 5627 iwl3945_release_nic_access(priv);
b481de9c
ZY		 5628
5629 if (rfkill & 0x1) {
5630 clear_bit(STATUS_RF_KILL_HW, &priv->status);
a96a27f9 5631 /* if RFKILL is not on, then wait for thermal
b481de9c 5632 * sensor in adapter to kick in */
bb8c093b 5633 while (iwl3945_hw_get_temperature(priv) == 0) {
b481de9c
ZY		 5634 thermal_spin++;
5635 udelay(10);
5636 }
5637
5638 if (thermal_spin)
5639 IWL_DEBUG_INFO("Thermal calibration took %dus\n",
5640 thermal_spin * 10);
5641 } else
5642 set_bit(STATUS_RF_KILL_HW, &priv->status);
5643
9fbab516 5644 /* After the ALIVE response, we can send commands to 3945 uCode */
b481de9c
ZY		 5645 set_bit(STATUS_ALIVE, &priv->status);
5646
5647 /* Clear out the uCode error bit if it is set */
5648 clear_bit(STATUS_FW_ERROR, &priv->status);
5649
bb8c093b 5650 if (iwl3945_is_rfkill(priv))
b481de9c
ZY		 5651 return;
5652
36d6825b 5653 ieee80211_wake_queues(priv->hw);
b481de9c
ZY		 5654
5655 priv->active_rate = priv->rates_mask;
5656 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
5657
bb8c093b 5658 iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
b481de9c 5659
bb8c093b
CH		 5660 if (iwl3945_is_associated(priv)) {
5661 struct iwl3945_rxon_cmd *active_rxon =
5662 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
b481de9c
ZY		 5663
5664 memcpy(&priv->staging_rxon, &priv->active_rxon,
5665 sizeof(priv->staging_rxon));
5666 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5667 } else {
5668 /* Initialize our rx_config data */
60294de3 5669 iwl3945_connection_init_rx_config(priv, priv->iw_mode);
b481de9c
ZY		 5670 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
5671 }
5672
9fbab516 5673 /* Configure Bluetooth device coexistence support */
bb8c093b 5674 iwl3945_send_bt_config(priv);
b481de9c
ZY		 5675
5676 /* Configure the adapter for unassociated operation */
bb8c093b 5677 iwl3945_commit_rxon(priv);
b481de9c 5678
b481de9c
ZY		 5679 iwl3945_reg_txpower_periodic(priv);
5680
fe00b5a5
RC		 5681 iwl3945_led_register(priv);
5682
b481de9c 5683 IWL_DEBUG_INFO("ALIVE processing complete.\n");
a9f46786 5684 set_bit(STATUS_READY, &priv->status);
5a66926a 5685 wake_up_interruptible(&priv->wait_command_queue);
b481de9c
ZY		 5686
5687 if (priv->error_recovering)
bb8c093b 5688 iwl3945_error_recovery(priv);
b481de9c 5689
9bdf5eca
MA		 5690 /* reassociate for ADHOC mode */
5691 if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
5692 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
5693 priv->vif);
5694 if (beacon)
5695 iwl3945_mac_beacon_update(priv->hw, beacon);
5696 }
5697
b481de9c
ZY		 5698 return;
5699
5700 restart:
5701 queue_work(priv->workqueue, &priv->restart);
5702}
5703
bb8c093b 5704static void iwl3945_cancel_deferred_work(struct iwl3945_priv *priv);
b481de9c 5705
bb8c093b 5706static void __iwl3945_down(struct iwl3945_priv *priv)
b481de9c
ZY		 5707{
5708 unsigned long flags;
5709 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
5710 struct ieee80211_conf *conf = NULL;
5711
5712 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
5713
5714 conf = ieee80211_get_hw_conf(priv->hw);
5715
5716 if (!exit_pending)
5717 set_bit(STATUS_EXIT_PENDING, &priv->status);
5718
ab53d8af 5719 iwl3945_led_unregister(priv);
bb8c093b 5720 iwl3945_clear_stations_table(priv);
b481de9c
ZY		 5721
5722 /* Unblock any waiting calls */
5723 wake_up_interruptible_all(&priv->wait_command_queue);
5724
b481de9c
ZY		 5725 /* Wipe out the EXIT_PENDING status bit if we are not actually
5726 * exiting the module */
5727 if (!exit_pending)
5728 clear_bit(STATUS_EXIT_PENDING, &priv->status);
5729
5730 /* stop and reset the on-board processor */
bb8c093b 5731 iwl3945_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
b481de9c
ZY		 5732
5733 /* tell the device to stop sending interrupts */
0359facc 5734 spin_lock_irqsave(&priv->lock, flags);
bb8c093b 5735 iwl3945_disable_interrupts(priv);
0359facc
MA		 5736 spin_unlock_irqrestore(&priv->lock, flags);
5737 iwl_synchronize_irq(priv);
b481de9c
ZY		 5738
5739 if (priv->mac80211_registered)
5740 ieee80211_stop_queues(priv->hw);
5741
bb8c093b 5742 /* If we have not previously called iwl3945_init() then
b481de9c 5743 * clear all bits but the RF Kill and SUSPEND bits and return */
bb8c093b 5744 if (!iwl3945_is_init(priv)) {
b481de9c
ZY		 5745 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5746 STATUS_RF_KILL_HW |
5747 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5748 STATUS_RF_KILL_SW |
9788864e
RC		 5749 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5750 STATUS_GEO_CONFIGURED |
b481de9c 5751 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
ebef2008
AK		 5752 STATUS_IN_SUSPEND |
5753 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
5754 STATUS_EXIT_PENDING;
b481de9c
ZY		 5755 goto exit;
5756 }
5757
5758 /* ...otherwise clear out all the status bits but the RF Kill and
5759 * SUSPEND bits and continue taking the NIC down. */
5760 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5761 STATUS_RF_KILL_HW |
5762 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5763 STATUS_RF_KILL_SW |
9788864e
RC		 5764 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5765 STATUS_GEO_CONFIGURED |
b481de9c
ZY		 5766 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5767 STATUS_IN_SUSPEND |
5768 test_bit(STATUS_FW_ERROR, &priv->status) <<
ebef2008
AK		 5769 STATUS_FW_ERROR |
5770 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
5771 STATUS_EXIT_PENDING;
b481de9c
ZY		 5772
5773 spin_lock_irqsave(&priv->lock, flags);
bb8c093b 5774 iwl3945_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
b481de9c
ZY		 5775 spin_unlock_irqrestore(&priv->lock, flags);
5776
bb8c093b
CH		 5777 iwl3945_hw_txq_ctx_stop(priv);
5778 iwl3945_hw_rxq_stop(priv);
b481de9c
ZY		 5779
5780 spin_lock_irqsave(&priv->lock, flags);
bb8c093b
CH		 5781 if (!iwl3945_grab_nic_access(priv)) {
5782 iwl3945_write_prph(priv, APMG_CLK_DIS_REG,
b481de9c 5783 APMG_CLK_VAL_DMA_CLK_RQT);
bb8c093b 5784 iwl3945_release_nic_access(priv);
b481de9c
ZY		 5785 }
5786 spin_unlock_irqrestore(&priv->lock, flags);
5787
5788 udelay(5);
5789
bb8c093b
CH		 5790 iwl3945_hw_nic_stop_master(priv);
5791 iwl3945_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
5792 iwl3945_hw_nic_reset(priv);
b481de9c
ZY		 5793
5794 exit:
bb8c093b 5795 memset(&priv->card_alive, 0, sizeof(struct iwl3945_alive_resp));
b481de9c
ZY		 5796
5797 if (priv->ibss_beacon)
5798 dev_kfree_skb(priv->ibss_beacon);
5799 priv->ibss_beacon = NULL;
5800
5801 /* clear out any free frames */
bb8c093b 5802 iwl3945_clear_free_frames(priv);
b481de9c
ZY		 5803}
5804
bb8c093b 5805static void iwl3945_down(struct iwl3945_priv *priv)
b481de9c
ZY		 5806{
5807 mutex_lock(&priv->mutex);
bb8c093b 5808 __iwl3945_down(priv);
b481de9c 5809 mutex_unlock(&priv->mutex);
b24d22b1 5810
bb8c093b 5811 iwl3945_cancel_deferred_work(priv);
b481de9c
ZY		 5812}
5813
5814#define MAX_HW_RESTARTS 5
5815
bb8c093b 5816static int __iwl3945_up(struct iwl3945_priv *priv)
b481de9c
ZY		 5817{
5818 int rc, i;
5819
5820 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5821 IWL_WARNING("Exit pending; will not bring the NIC up\n");
5822 return -EIO;
5823 }
5824
5825 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
5826 IWL_WARNING("Radio disabled by SW RF kill (module "
5827 "parameter)\n");
e655b9f0
ZY		 5828 return -ENODEV;
5829 }
5830
e903fbd4 5831 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
a96a27f9 5832 IWL_ERROR("ucode not available for device bring up\n");
e903fbd4
RC		 5833 return -EIO;
5834 }
5835
e655b9f0
ZY		 5836 /* If platform's RF_KILL switch is NOT set to KILL */
5837 if (iwl3945_read32(priv, CSR_GP_CNTRL) &
5838 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
5839 clear_bit(STATUS_RF_KILL_HW, &priv->status);
5840 else {
5841 set_bit(STATUS_RF_KILL_HW, &priv->status);
5842 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
5843 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
5844 return -ENODEV;
5845 }
b481de9c 5846 }
80fcc9e2 5847
bb8c093b 5848 iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
b481de9c 5849
bb8c093b 5850 rc = iwl3945_hw_nic_init(priv);
b481de9c
ZY		 5851 if (rc) {
5852 IWL_ERROR("Unable to int nic\n");
5853 return rc;
5854 }
5855
5856 /* make sure rfkill handshake bits are cleared */
bb8c093b
CH		 5857 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5858 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR,
b481de9c
ZY		 5859 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
5860
5861 /* clear (again), then enable host interrupts */
bb8c093b
CH		 5862 iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
5863 iwl3945_enable_interrupts(priv);
b481de9c
ZY		 5864
5865 /* really make sure rfkill handshake bits are cleared */
bb8c093b
CH		 5866 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5867 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
b481de9c
ZY		 5868
5869 /* Copy original ucode data image from disk into backup cache.
5870 * This will be used to initialize the on-board processor's
5871 * data SRAM for a clean start when the runtime program first loads. */
5872 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
5a66926a 5873 priv->ucode_data.len);
b481de9c 5874
e655b9f0
ZY		 5875 /* We return success when we resume from suspend and rf_kill is on. */
5876 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
5877 return 0;
5878
b481de9c
ZY		 5879 for (i = 0; i < MAX_HW_RESTARTS; i++) {
5880
bb8c093b 5881 iwl3945_clear_stations_table(priv);
b481de9c
ZY		 5882
5883 /* load bootstrap state machine,
5884 * load bootstrap program into processor's memory,
5885 * prepare to load the "initialize" uCode */
bb8c093b 5886 rc = iwl3945_load_bsm(priv);
b481de9c
ZY		 5887
5888 if (rc) {
5889 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
5890 continue;
5891 }
5892
5893 /* start card; "initialize" will load runtime ucode */
bb8c093b 5894 iwl3945_nic_start(priv);
b481de9c 5895
b481de9c
ZY		 5896 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
5897
5898 return 0;
5899 }
5900
5901 set_bit(STATUS_EXIT_PENDING, &priv->status);
bb8c093b 5902 __iwl3945_down(priv);
ebef2008 5903 clear_bit(STATUS_EXIT_PENDING, &priv->status);
b481de9c
ZY		 5904
5905 /* tried to restart and config the device for as long as our
5906 * patience could withstand */
5907 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
5908 return -EIO;
5909}
5910
5911
5912/*****************************************************************************
5913 *
5914 * Workqueue callbacks
5915 *
5916 *****************************************************************************/
5917
bb8c093b 5918static void iwl3945_bg_init_alive_start(struct work_struct *data)
b481de9c 5919{
bb8c093b
CH		 5920 struct iwl3945_priv *priv =
5921 container_of(data, struct iwl3945_priv, init_alive_start.work);
b481de9c
ZY		 5922
5923 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5924 return;
5925
5926 mutex_lock(&priv->mutex);
bb8c093b 5927 iwl3945_init_alive_start(priv);
b481de9c
ZY		 5928 mutex_unlock(&priv->mutex);
5929}
5930
bb8c093b 5931static void iwl3945_bg_alive_start(struct work_struct *data)
b481de9c 5932{
bb8c093b
CH		 5933 struct iwl3945_priv *priv =
5934 container_of(data, struct iwl3945_priv, alive_start.work);
b481de9c
ZY		 5935
5936 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5937 return;
5938
5939 mutex_lock(&priv->mutex);
bb8c093b 5940 iwl3945_alive_start(priv);
b481de9c
ZY		 5941 mutex_unlock(&priv->mutex);
5942}
5943
bb8c093b 5944static void iwl3945_bg_rf_kill(struct work_struct *work)
b481de9c 5945{
bb8c093b 5946 struct iwl3945_priv *priv = container_of(work, struct iwl3945_priv, rf_kill);
b481de9c
ZY		 5947
5948 wake_up_interruptible(&priv->wait_command_queue);
5949
5950 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5951 return;
5952
5953 mutex_lock(&priv->mutex);
5954
bb8c093b 5955 if (!iwl3945_is_rfkill(priv)) {
b481de9c
ZY		 5956 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
5957 "HW and/or SW RF Kill no longer active, restarting "
5958 "device\n");
5959 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
5960 queue_work(priv->workqueue, &priv->restart);
5961 } else {
5962
5963 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
5964 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
5965 "disabled by SW switch\n");
5966 else
5967 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
5968 "Kill switch must be turned off for "
5969 "wireless networking to work.\n");
5970 }
ebef2008 5971
b481de9c 5972 mutex_unlock(&priv->mutex);
80fcc9e2 5973 iwl3945_rfkill_set_hw_state(priv);
b481de9c
ZY		 5974}
5975
5976#define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
5977
bb8c093b 5978static void iwl3945_bg_scan_check(struct work_struct *data)
b481de9c 5979{
bb8c093b
CH		 5980 struct iwl3945_priv *priv =
5981 container_of(data, struct iwl3945_priv, scan_check.work);
b481de9c
ZY		 5982
5983 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5984 return;
5985
5986 mutex_lock(&priv->mutex);
5987 if (test_bit(STATUS_SCANNING, &priv->status) ||
5988 test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
5989 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
5990 "Scan completion watchdog resetting adapter (%dms)\n",
5991 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
15e869d8 5992
b481de9c 5993 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
bb8c093b 5994 iwl3945_send_scan_abort(priv);
b481de9c
ZY		 5995 }
5996 mutex_unlock(&priv->mutex);
5997}
5998
bb8c093b 5999static void iwl3945_bg_request_scan(struct work_struct *data)
b481de9c 6000{
bb8c093b
CH		 6001 struct iwl3945_priv *priv =
6002 container_of(data, struct iwl3945_priv, request_scan);
6003 struct iwl3945_host_cmd cmd = {
b481de9c 6004 .id = REPLY_SCAN_CMD,
bb8c093b 6005 .len = sizeof(struct iwl3945_scan_cmd),
b481de9c
ZY		 6006 .meta.flags = CMD_SIZE_HUGE,
6007 };
6008 int rc = 0;
bb8c093b 6009 struct iwl3945_scan_cmd *scan;
b481de9c 6010 struct ieee80211_conf *conf = NULL;
f9340520 6011 u8 n_probes = 2;
8318d78a 6012 enum ieee80211_band band;
9387b7ca 6013 DECLARE_SSID_BUF(ssid);
b481de9c
ZY		 6014
6015 conf = ieee80211_get_hw_conf(priv->hw);
6016
6017 mutex_lock(&priv->mutex);
6018
bb8c093b 6019 if (!iwl3945_is_ready(priv)) {
b481de9c
ZY		 6020 IWL_WARNING("request scan called when driver not ready.\n");
6021 goto done;
6022 }
6023
a96a27f9 6024 /* Make sure the scan wasn't canceled before this queued work
b481de9c
ZY		 6025 * was given the chance to run... */
6026 if (!test_bit(STATUS_SCANNING, &priv->status))
6027 goto done;
6028
6029 /* This should never be called or scheduled if there is currently
6030 * a scan active in the hardware. */
6031 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
6032 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6033 "Ignoring second request.\n");
6034 rc = -EIO;
6035 goto done;
6036 }
6037
6038 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6039 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6040 goto done;
6041 }
6042
6043 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6044 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
6045 goto done;
6046 }
6047
bb8c093b 6048 if (iwl3945_is_rfkill(priv)) {
b481de9c
ZY		 6049 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6050 goto done;
6051 }
6052
6053 if (!test_bit(STATUS_READY, &priv->status)) {
6054 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
6055 goto done;
6056 }
6057
6058 if (!priv->scan_bands) {
6059 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6060 goto done;
6061 }
6062
6063 if (!priv->scan) {
bb8c093b 6064 priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
b481de9c
ZY		 6065 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
6066 if (!priv->scan) {
6067 rc = -ENOMEM;
6068 goto done;
6069 }
6070 }
6071 scan = priv->scan;
bb8c093b 6072 memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
b481de9c
ZY		 6073
6074 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
6075 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
6076
bb8c093b 6077 if (iwl3945_is_associated(priv)) {
b481de9c
ZY		 6078 u16 interval = 0;
6079 u32 extra;
6080 u32 suspend_time = 100;
6081 u32 scan_suspend_time = 100;
6082 unsigned long flags;
6083
6084 IWL_DEBUG_INFO("Scanning while associated...\n");
6085
6086 spin_lock_irqsave(&priv->lock, flags);
6087 interval = priv->beacon_int;
6088 spin_unlock_irqrestore(&priv->lock, flags);
6089
6090 scan->suspend_time = 0;
15e869d8 6091 scan->max_out_time = cpu_to_le32(200 * 1024);
b481de9c
ZY		 6092 if (!interval)
6093 interval = suspend_time;
6094 /*
6095 * suspend time format:
6096 * 0-19: beacon interval in usec (time before exec.)
6097 * 20-23: 0
6098 * 24-31: number of beacons (suspend between channels)
6099 */
6100
6101 extra = (suspend_time / interval) << 24;
6102 scan_suspend_time = 0xFF0FFFFF &
6103 (extra | ((suspend_time % interval) * 1024));
6104
6105 scan->suspend_time = cpu_to_le32(scan_suspend_time);
6106 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
6107 scan_suspend_time, interval);
6108 }
6109
6110 /* We should add the ability for user to lock to PASSIVE ONLY */
6111 if (priv->one_direct_scan) {
6112 IWL_DEBUG_SCAN
6113 ("Kicking off one direct scan for '%s'\n",
9387b7ca
JL		 6114 print_ssid(ssid, priv->direct_ssid,
6115 priv->direct_ssid_len));
b481de9c
ZY		 6116 scan->direct_scan[0].id = WLAN_EID_SSID;
6117 scan->direct_scan[0].len = priv->direct_ssid_len;
6118 memcpy(scan->direct_scan[0].ssid,
6119 priv->direct_ssid, priv->direct_ssid_len);
f9340520 6120 n_probes++;
f9340520 6121 } else
786b4557 6122 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
b481de9c
ZY		 6123
6124 /* We don't build a direct scan probe request; the uCode will do
6125 * that based on the direct_mask added to each channel entry */
6126 scan->tx_cmd.len = cpu_to_le16(
bb8c093b 6127 iwl3945_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
430cfe95 6128 IWL_MAX_SCAN_SIZE - sizeof(*scan)));
b481de9c
ZY		 6129 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
6130 scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
6131 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
6132
6133 /* flags + rate selection */
6134
66b5004d 6135 if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
b481de9c
ZY		 6136 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
6137 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
6138 scan->good_CRC_th = 0;
8318d78a 6139 band = IEEE80211_BAND_2GHZ;
66b5004d 6140 } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
b481de9c
ZY		 6141 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
6142 scan->good_CRC_th = IWL_GOOD_CRC_TH;
8318d78a 6143 band = IEEE80211_BAND_5GHZ;
66b5004d 6144 } else {
b481de9c
ZY		 6145 IWL_WARNING("Invalid scan band count\n");
6146 goto done;
6147 }
6148
6149 /* select Rx antennas */
6150 scan->flags |= iwl3945_get_antenna_flags(priv);
6151
05c914fe 6152 if (priv->iw_mode == NL80211_IFTYPE_MONITOR)
b481de9c
ZY		 6153 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
6154
f9340520
AK		 6155 scan->channel_count =
6156 iwl3945_get_channels_for_scan(priv, band, 1, /* active */
6157 n_probes,
6158 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
b481de9c 6159
14b54336
RC		 6160 if (scan->channel_count == 0) {
6161 IWL_DEBUG_SCAN("channel count %d\n", scan->channel_count);
6162 goto done;
6163 }
6164
b481de9c 6165 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
bb8c093b 6166 scan->channel_count * sizeof(struct iwl3945_scan_channel);
b481de9c
ZY		 6167 cmd.data = scan;
6168 scan->len = cpu_to_le16(cmd.len);
6169
6170 set_bit(STATUS_SCAN_HW, &priv->status);
bb8c093b 6171 rc = iwl3945_send_cmd_sync(priv, &cmd);
b481de9c
ZY		 6172 if (rc)
6173 goto done;
6174
6175 queue_delayed_work(priv->workqueue, &priv->scan_check,
6176 IWL_SCAN_CHECK_WATCHDOG);
6177
6178 mutex_unlock(&priv->mutex);
6179 return;
6180
6181 done:
2420ebc1
MA		 6182 /* can not perform scan make sure we clear scanning
6183 * bits from status so next scan request can be performed.
6184 * if we dont clear scanning status bit here all next scan
6185 * will fail
6186 */
6187 clear_bit(STATUS_SCAN_HW, &priv->status);
6188 clear_bit(STATUS_SCANNING, &priv->status);
6189
01ebd063 6190 /* inform mac80211 scan aborted */
b481de9c
ZY		 6191 queue_work(priv->workqueue, &priv->scan_completed);
6192 mutex_unlock(&priv->mutex);
6193}
6194
bb8c093b 6195static void iwl3945_bg_up(struct work_struct *data)
b481de9c 6196{
bb8c093b 6197 struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv, up);
b481de9c
ZY		 6198
6199 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6200 return;
6201
6202 mutex_lock(&priv->mutex);
bb8c093b 6203 __iwl3945_up(priv);
b481de9c 6204 mutex_unlock(&priv->mutex);
80fcc9e2 6205 iwl3945_rfkill_set_hw_state(priv);
b481de9c
ZY		 6206}
6207
bb8c093b 6208static void iwl3945_bg_restart(struct work_struct *data)
b481de9c 6209{
bb8c093b 6210 struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv, restart);
b481de9c
ZY		 6211
6212 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6213 return;
6214
bb8c093b 6215 iwl3945_down(priv);
b481de9c
ZY		 6216 queue_work(priv->workqueue, &priv->up);
6217}
6218
bb8c093b 6219static void iwl3945_bg_rx_replenish(struct work_struct *data)
b481de9c 6220{
bb8c093b
CH		 6221 struct iwl3945_priv *priv =
6222 container_of(data, struct iwl3945_priv, rx_replenish);
b481de9c
ZY		 6223
6224 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6225 return;
6226
6227 mutex_lock(&priv->mutex);
bb8c093b 6228 iwl3945_rx_replenish(priv);
b481de9c
ZY		 6229 mutex_unlock(&priv->mutex);
6230}
6231
7878a5a4
MA		 6232#define IWL_DELAY_NEXT_SCAN (HZ*2)
6233
cd56d331 6234static void iwl3945_post_associate(struct iwl3945_priv *priv)
b481de9c 6235{
b481de9c
ZY		 6236 int rc = 0;
6237 struct ieee80211_conf *conf = NULL;
6238
05c914fe 6239 if (priv->iw_mode == NL80211_IFTYPE_AP) {
3ac7f146 6240 IWL_ERROR("%s Should not be called in AP mode\n", __func__);
b481de9c
ZY		 6241 return;
6242 }
6243
6244
e174961c
JB		 6245 IWL_DEBUG_ASSOC("Associated as %d to: %pM\n",
6246 priv->assoc_id, priv->active_rxon.bssid_addr);
b481de9c
ZY		 6247
6248 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6249 return;
6250
322a9811 6251 if (!priv->vif || !priv->is_open)
6ef89d0a 6252 return;
322a9811 6253
bb8c093b 6254 iwl3945_scan_cancel_timeout(priv, 200);
15e869d8 6255
b481de9c
ZY		 6256 conf = ieee80211_get_hw_conf(priv->hw);
6257
6258 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
bb8c093b 6259 iwl3945_commit_rxon(priv);
b481de9c 6260
bb8c093b
CH		 6261 memset(&priv->rxon_timing, 0, sizeof(struct iwl3945_rxon_time_cmd));
6262 iwl3945_setup_rxon_timing(priv);
6263 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON_TIMING,
b481de9c
ZY		 6264 sizeof(priv->rxon_timing), &priv->rxon_timing);
6265 if (rc)
6266 IWL_WARNING("REPLY_RXON_TIMING failed - "
6267 "Attempting to continue.\n");
6268
6269 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6270
6271 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6272
6273 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
6274 priv->assoc_id, priv->beacon_int);
6275
6276 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6277 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6278 else
6279 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6280
6281 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6282 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
6283 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
6284 else
6285 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6286
05c914fe 6287 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
b481de9c
ZY		 6288 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6289
6290 }
6291
bb8c093b 6292 iwl3945_commit_rxon(priv);
b481de9c
ZY		 6293
6294 switch (priv->iw_mode) {
05c914fe 6295 case NL80211_IFTYPE_STATION:
bb8c093b 6296 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
b481de9c
ZY		 6297 break;
6298
05c914fe 6299 case NL80211_IFTYPE_ADHOC:
b481de9c 6300
ce546fd2 6301 priv->assoc_id = 1;
bb8c093b 6302 iwl3945_add_station(priv, priv->bssid, 0, 0);
b481de9c 6303 iwl3945_sync_sta(priv, IWL_STA_ID,
8318d78a 6304 (priv->band == IEEE80211_BAND_5GHZ) ?
b481de9c
ZY		 6305 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
6306 CMD_ASYNC);
bb8c093b
CH		 6307 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
6308 iwl3945_send_beacon_cmd(priv);
b481de9c
ZY		 6309
6310 break;
6311
6312 default:
6313 IWL_ERROR("%s Should not be called in %d mode\n",
3ac7f146 6314 __func__, priv->iw_mode);
b481de9c
ZY		 6315 break;
6316 }
6317
bb8c093b 6318 iwl3945_activate_qos(priv, 0);
292ae174 6319
7878a5a4
MA		 6320 /* we have just associated, don't start scan too early */
6321 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
cd56d331
AK		 6322}
6323
bb8c093b 6324static void iwl3945_bg_abort_scan(struct work_struct *work)
b481de9c 6325{
bb8c093b 6326 struct iwl3945_priv *priv = container_of(work, struct iwl3945_priv, abort_scan);
b481de9c 6327
bb8c093b 6328 if (!iwl3945_is_ready(priv))
b481de9c
ZY		 6329 return;
6330
6331 mutex_lock(&priv->mutex);
6332
6333 set_bit(STATUS_SCAN_ABORTING, &priv->status);
bb8c093b 6334 iwl3945_send_scan_abort(priv);
b481de9c
ZY		 6335
6336 mutex_unlock(&priv->mutex);
6337}
6338
e8975581 6339static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed);
76bb77e0 6340
bb8c093b 6341static void iwl3945_bg_scan_completed(struct work_struct *work)
b481de9c 6342{
bb8c093b
CH		 6343 struct iwl3945_priv *priv =
6344 container_of(work, struct iwl3945_priv, scan_completed);
b481de9c
ZY		 6345
6346 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
6347
6348 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6349 return;
6350
a0646470 6351 if (test_bit(STATUS_CONF_PENDING, &priv->status))
e8975581 6352 iwl3945_mac_config(priv->hw, 0);
76bb77e0 6353
b481de9c
ZY		 6354 ieee80211_scan_completed(priv->hw);
6355
6356 /* Since setting the TXPOWER may have been deferred while
6357 * performing the scan, fire one off */
6358 mutex_lock(&priv->mutex);
bb8c093b 6359 iwl3945_hw_reg_send_txpower(priv);
b481de9c
ZY		 6360 mutex_unlock(&priv->mutex);
6361}
6362
6363/*****************************************************************************
6364 *
6365 * mac80211 entry point functions
6366 *
6367 *****************************************************************************/
6368
5a66926a
ZY		 6369#define UCODE_READY_TIMEOUT (2 * HZ)
6370
bb8c093b 6371static int iwl3945_mac_start(struct ieee80211_hw *hw)
b481de9c 6372{
bb8c093b 6373 struct iwl3945_priv *priv = hw->priv;
5a66926a 6374 int ret;
b481de9c
ZY		 6375
6376 IWL_DEBUG_MAC80211("enter\n");
6377
5a66926a
ZY		 6378 if (pci_enable_device(priv->pci_dev)) {
6379 IWL_ERROR("Fail to pci_enable_device\n");
6380 return -ENODEV;
6381 }
6382 pci_restore_state(priv->pci_dev);
6383 pci_enable_msi(priv->pci_dev);
6384
6385 ret = request_irq(priv->pci_dev->irq, iwl3945_isr, IRQF_SHARED,
6386 DRV_NAME, priv);
6387 if (ret) {
6388 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
6389 goto out_disable_msi;
6390 }
6391
b481de9c
ZY		 6392 /* we should be verifying the device is ready to be opened */
6393 mutex_lock(&priv->mutex);
6394
5a66926a
ZY		 6395 memset(&priv->staging_rxon, 0, sizeof(struct iwl3945_rxon_cmd));
6396 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
6397 * ucode filename and max sizes are card-specific. */
6398
6399 if (!priv->ucode_code.len) {
6400 ret = iwl3945_read_ucode(priv);
6401 if (ret) {
6402 IWL_ERROR("Could not read microcode: %d\n", ret);
6403 mutex_unlock(&priv->mutex);
6404 goto out_release_irq;
6405 }
6406 }
b481de9c 6407
e655b9f0 6408 ret = __iwl3945_up(priv);
b481de9c
ZY		 6409
6410 mutex_unlock(&priv->mutex);
5a66926a 6411
80fcc9e2
AG		 6412 iwl3945_rfkill_set_hw_state(priv);
6413
e655b9f0
ZY		 6414 if (ret)
6415 goto out_release_irq;
6416
6417 IWL_DEBUG_INFO("Start UP work.\n");
6418
6419 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
6420 return 0;
6421
5a66926a
ZY		 6422 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
6423 * mac80211 will not be run successfully. */
6424 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
6425 test_bit(STATUS_READY, &priv->status),
6426 UCODE_READY_TIMEOUT);
6427 if (!ret) {
6428 if (!test_bit(STATUS_READY, &priv->status)) {
6429 IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
6430 jiffies_to_msecs(UCODE_READY_TIMEOUT));
6431 ret = -ETIMEDOUT;
6432 goto out_release_irq;
6433 }
6434 }
6435
e655b9f0 6436 priv->is_open = 1;
b481de9c
ZY		 6437 IWL_DEBUG_MAC80211("leave\n");
6438 return 0;
5a66926a
ZY		 6439
6440out_release_irq:
6441 free_irq(priv->pci_dev->irq, priv);
6442out_disable_msi:
6443 pci_disable_msi(priv->pci_dev);
e655b9f0
ZY		 6444 pci_disable_device(priv->pci_dev);
6445 priv->is_open = 0;
6446 IWL_DEBUG_MAC80211("leave - failed\n");
5a66926a 6447 return ret;
b481de9c
ZY		 6448}
6449
bb8c093b 6450static void iwl3945_mac_stop(struct ieee80211_hw *hw)
b481de9c 6451{
bb8c093b 6452 struct iwl3945_priv *priv = hw->priv;
b481de9c
ZY		 6453
6454 IWL_DEBUG_MAC80211("enter\n");
6ef89d0a 6455
e655b9f0
ZY		 6456 if (!priv->is_open) {
6457 IWL_DEBUG_MAC80211("leave - skip\n");
6458 return;
6459 }
6460
b481de9c 6461 priv->is_open = 0;
5a66926a
ZY		 6462
6463 if (iwl3945_is_ready_rf(priv)) {
e655b9f0
ZY		 6464 /* stop mac, cancel any scan request and clear
6465 * RXON_FILTER_ASSOC_MSK BIT
6466 */
5a66926a
ZY		 6467 mutex_lock(&priv->mutex);
6468 iwl3945_scan_cancel_timeout(priv, 100);
fde3571f 6469 mutex_unlock(&priv->mutex);
fde3571f
MA		 6470 }
6471
5a66926a
ZY		 6472 iwl3945_down(priv);
6473
6474 flush_workqueue(priv->workqueue);
6475 free_irq(priv->pci_dev->irq, priv);
6476 pci_disable_msi(priv->pci_dev);
6477 pci_save_state(priv->pci_dev);
6478 pci_disable_device(priv->pci_dev);
6ef89d0a 6479
b481de9c 6480 IWL_DEBUG_MAC80211("leave\n");
b481de9c
ZY		 6481}
6482
e039fa4a 6483static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
b481de9c 6484{
bb8c093b 6485 struct iwl3945_priv *priv = hw->priv;
b481de9c
ZY		 6486
6487 IWL_DEBUG_MAC80211("enter\n");
6488
b481de9c 6489 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
e039fa4a 6490 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
b481de9c 6491
e039fa4a 6492 if (iwl3945_tx_skb(priv, skb))
b481de9c
ZY		 6493 dev_kfree_skb_any(skb);
6494
6495 IWL_DEBUG_MAC80211("leave\n");
6496 return 0;
6497}
6498
bb8c093b 6499static int iwl3945_mac_add_interface(struct ieee80211_hw *hw,
b481de9c
ZY		 6500 struct ieee80211_if_init_conf *conf)
6501{
bb8c093b 6502 struct iwl3945_priv *priv = hw->priv;
b481de9c
ZY		 6503 unsigned long flags;
6504
32bfd35d 6505 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
b481de9c 6506
32bfd35d
JB		 6507 if (priv->vif) {
6508 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
864792e3 6509 return -EOPNOTSUPP;
b481de9c
ZY		 6510 }
6511
6512 spin_lock_irqsave(&priv->lock, flags);
32bfd35d 6513 priv->vif = conf->vif;
60294de3 6514 priv->iw_mode = conf->type;
b481de9c
ZY		 6515
6516 spin_unlock_irqrestore(&priv->lock, flags);
6517
6518 mutex_lock(&priv->mutex);
864792e3
TW		 6519
6520 if (conf->mac_addr) {
e174961c 6521 IWL_DEBUG_MAC80211("Set: %pM\n", conf->mac_addr);
864792e3
TW		 6522 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
6523 }
6524
5a66926a
ZY		 6525 if (iwl3945_is_ready(priv))
6526 iwl3945_set_mode(priv, conf->type);
b481de9c 6527
b481de9c
ZY		 6528 mutex_unlock(&priv->mutex);
6529
5a66926a 6530 IWL_DEBUG_MAC80211("leave\n");
b481de9c
ZY		 6531 return 0;
6532}
6533
6534/**
bb8c093b 6535 * iwl3945_mac_config - mac80211 config callback
b481de9c
ZY		 6536 *
6537 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
6538 * be set inappropriately and the driver currently sets the hardware up to
6539 * use it whenever needed.
6540 */
e8975581 6541static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed)
b481de9c 6542{
bb8c093b
CH		 6543 struct iwl3945_priv *priv = hw->priv;
6544 const struct iwl3945_channel_info *ch_info;
e8975581 6545 struct ieee80211_conf *conf = &hw->conf;
b481de9c 6546 unsigned long flags;
76bb77e0 6547 int ret = 0;
b481de9c
ZY		 6548
6549 mutex_lock(&priv->mutex);
8318d78a 6550 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
b481de9c 6551
bb8c093b 6552 if (!iwl3945_is_ready(priv)) {
b481de9c 6553 IWL_DEBUG_MAC80211("leave - not ready\n");
76bb77e0
ZY		 6554 ret = -EIO;
6555 goto out;
b481de9c
ZY		 6556 }
6557
bb8c093b 6558 if (unlikely(!iwl3945_param_disable_hw_scan &&
b481de9c 6559 test_bit(STATUS_SCANNING, &priv->status))) {
a0646470
ZY		 6560 IWL_DEBUG_MAC80211("leave - scanning\n");
6561 set_bit(STATUS_CONF_PENDING, &priv->status);
b481de9c 6562 mutex_unlock(&priv->mutex);
a0646470 6563 return 0;
b481de9c
ZY		 6564 }
6565
6566 spin_lock_irqsave(&priv->lock, flags);
6567
8318d78a
JB		 6568 ch_info = iwl3945_get_channel_info(priv, conf->channel->band,
6569 conf->channel->hw_value);
b481de9c 6570 if (!is_channel_valid(ch_info)) {
66b5004d 6571 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this band.\n",
8318d78a 6572 conf->channel->hw_value, conf->channel->band);
b481de9c
ZY		 6573 IWL_DEBUG_MAC80211("leave - invalid channel\n");
6574 spin_unlock_irqrestore(&priv->lock, flags);
76bb77e0
ZY		 6575 ret = -EINVAL;
6576 goto out;
b481de9c
ZY		 6577 }
6578
8318d78a 6579 iwl3945_set_rxon_channel(priv, conf->channel->band, conf->channel->hw_value);
b481de9c 6580
8318d78a 6581 iwl3945_set_flags_for_phymode(priv, conf->channel->band);
b481de9c
ZY		 6582
6583 /* The list of supported rates and rate mask can be different
6584 * for each phymode; since the phymode may have changed, reset
6585 * the rate mask to what mac80211 lists */
bb8c093b 6586 iwl3945_set_rate(priv);
b481de9c
ZY		 6587
6588 spin_unlock_irqrestore(&priv->lock, flags);
6589
6590#ifdef IEEE80211_CONF_CHANNEL_SWITCH
6591 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
bb8c093b 6592 iwl3945_hw_channel_switch(priv, conf->channel);
76bb77e0 6593 goto out;
b481de9c
ZY		 6594 }
6595#endif
6596
bb8c093b 6597 iwl3945_radio_kill_sw(priv, !conf->radio_enabled);
b481de9c
ZY		 6598
6599 if (!conf->radio_enabled) {
6600 IWL_DEBUG_MAC80211("leave - radio disabled\n");
76bb77e0 6601 goto out;
b481de9c
ZY		 6602 }
6603
bb8c093b 6604 if (iwl3945_is_rfkill(priv)) {
b481de9c 6605 IWL_DEBUG_MAC80211("leave - RF kill\n");
76bb77e0
ZY		 6606 ret = -EIO;
6607 goto out;
b481de9c
ZY		 6608 }
6609
bb8c093b 6610 iwl3945_set_rate(priv);
b481de9c
ZY		 6611
6612 if (memcmp(&priv->active_rxon,
6613 &priv->staging_rxon, sizeof(priv->staging_rxon)))
bb8c093b 6614 iwl3945_commit_rxon(priv);
b481de9c
ZY		 6615 else
6616 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
6617
6618 IWL_DEBUG_MAC80211("leave\n");
6619
76bb77e0 6620out:
a0646470 6621 clear_bit(STATUS_CONF_PENDING, &priv->status);
b481de9c 6622 mutex_unlock(&priv->mutex);
76bb77e0 6623 return ret;
b481de9c
ZY		 6624}
6625
bb8c093b 6626static void iwl3945_config_ap(struct iwl3945_priv *priv)
b481de9c
ZY		 6627{
6628 int rc = 0;
6629
d986bcd1 6630 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
b481de9c
ZY		 6631 return;
6632
6633 /* The following should be done only at AP bring up */
5d1e2325 6634 if (!(iwl3945_is_associated(priv))) {
b481de9c
ZY		 6635
6636 /* RXON - unassoc (to set timing command) */
6637 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
bb8c093b 6638 iwl3945_commit_rxon(priv);
b481de9c
ZY		 6639
6640 /* RXON Timing */
bb8c093b
CH		 6641 memset(&priv->rxon_timing, 0, sizeof(struct iwl3945_rxon_time_cmd));
6642 iwl3945_setup_rxon_timing(priv);
6643 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON_TIMING,
b481de9c
ZY		 6644 sizeof(priv->rxon_timing), &priv->rxon_timing);
6645 if (rc)
6646 IWL_WARNING("REPLY_RXON_TIMING failed - "
6647 "Attempting to continue.\n");
6648
6649 /* FIXME: what should be the assoc_id for AP? */
6650 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6651 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6652 priv->staging_rxon.flags |=
6653 RXON_FLG_SHORT_PREAMBLE_MSK;
6654 else
6655 priv->staging_rxon.flags &=
6656 ~RXON_FLG_SHORT_PREAMBLE_MSK;
6657
6658 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6659 if (priv->assoc_capability &
6660 WLAN_CAPABILITY_SHORT_SLOT_TIME)
6661 priv->staging_rxon.flags |=
6662 RXON_FLG_SHORT_SLOT_MSK;
6663 else
6664 priv->staging_rxon.flags &=
6665 ~RXON_FLG_SHORT_SLOT_MSK;
6666
05c914fe 6667 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
b481de9c
ZY		 6668 priv->staging_rxon.flags &=
6669 ~RXON_FLG_SHORT_SLOT_MSK;
6670 }
6671 /* restore RXON assoc */
6672 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
bb8c093b
CH		 6673 iwl3945_commit_rxon(priv);
6674 iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0);
556f8db7 6675 }
bb8c093b 6676 iwl3945_send_beacon_cmd(priv);
b481de9c
ZY		 6677
6678 /* FIXME - we need to add code here to detect a totally new
6679 * configuration, reset the AP, unassoc, rxon timing, assoc,
6680 * clear sta table, add BCAST sta... */
6681}
6682
32bfd35d
JB		 6683static int iwl3945_mac_config_interface(struct ieee80211_hw *hw,
6684 struct ieee80211_vif *vif,
b481de9c
ZY		 6685 struct ieee80211_if_conf *conf)
6686{
bb8c093b 6687 struct iwl3945_priv *priv = hw->priv;
b481de9c
ZY		 6688 int rc;
6689
6690 if (conf == NULL)
6691 return -EIO;
6692
b716bb91
EG		 6693 if (priv->vif != vif) {
6694 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
b716bb91
EG		 6695 return 0;
6696 }
6697
9d139c81 6698 /* handle this temporarily here */
05c914fe 6699 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
9d139c81
JB		 6700 conf->changed & IEEE80211_IFCC_BEACON) {
6701 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
6702 if (!beacon)
6703 return -ENOMEM;
9bdf5eca 6704 mutex_lock(&priv->mutex);
9d139c81 6705 rc = iwl3945_mac_beacon_update(hw, beacon);
9bdf5eca 6706 mutex_unlock(&priv->mutex);
9d139c81
JB		 6707 if (rc)
6708 return rc;
6709 }
6710
5a66926a
ZY		 6711 if (!iwl3945_is_alive(priv))
6712 return -EAGAIN;
6713
b481de9c
ZY		 6714 mutex_lock(&priv->mutex);
6715
b481de9c 6716 if (conf->bssid)
e174961c 6717 IWL_DEBUG_MAC80211("bssid: %pM\n", conf->bssid);
b481de9c 6718
4150c572
JB		 6719/*
6720 * very dubious code was here; the probe filtering flag is never set:
6721 *
b481de9c
ZY		 6722 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
6723 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
4150c572 6724 */
b481de9c 6725
05c914fe 6726 if (priv->iw_mode == NL80211_IFTYPE_AP) {
b481de9c
ZY		 6727 if (!conf->bssid) {
6728 conf->bssid = priv->mac_addr;
6729 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
e174961c
JB		 6730 IWL_DEBUG_MAC80211("bssid was set to: %pM\n",
6731 conf->bssid);
b481de9c
ZY		 6732 }
6733 if (priv->ibss_beacon)
6734 dev_kfree_skb(priv->ibss_beacon);
6735
9d139c81 6736 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
b481de9c
ZY		 6737 }
6738
fde3571f
MA		 6739 if (iwl3945_is_rfkill(priv))
6740 goto done;
6741
b481de9c
ZY		 6742 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
6743 !is_multicast_ether_addr(conf->bssid)) {
6744 /* If there is currently a HW scan going on in the background
6745 * then we need to cancel it else the RXON below will fail. */
bb8c093b 6746 if (iwl3945_scan_cancel_timeout(priv, 100)) {
b481de9c
ZY		 6747 IWL_WARNING("Aborted scan still in progress "
6748 "after 100ms\n");
6749 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
6750 mutex_unlock(&priv->mutex);
6751 return -EAGAIN;
6752 }
6753 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
6754
6755 /* TODO: Audit driver for usage of these members and see
6756 * if mac80211 deprecates them (priv->bssid looks like it
6757 * shouldn't be there, but I haven't scanned the IBSS code
6758 * to verify) - jpk */
6759 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
6760
05c914fe 6761 if (priv->iw_mode == NL80211_IFTYPE_AP)
bb8c093b 6762 iwl3945_config_ap(priv);
b481de9c 6763 else {
bb8c093b 6764 rc = iwl3945_commit_rxon(priv);
05c914fe 6765 if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
bb8c093b 6766 iwl3945_add_station(priv,
556f8db7 6767 priv->active_rxon.bssid_addr, 1, 0);
b481de9c
ZY		 6768 }
6769
6770 } else {
bb8c093b 6771 iwl3945_scan_cancel_timeout(priv, 100);
b481de9c 6772 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
bb8c093b 6773 iwl3945_commit_rxon(priv);
b481de9c
ZY		 6774 }
6775
fde3571f 6776 done:
b481de9c
ZY		 6777 IWL_DEBUG_MAC80211("leave\n");
6778 mutex_unlock(&priv->mutex);
6779
6780 return 0;
6781}
6782
bb8c093b 6783static void iwl3945_configure_filter(struct ieee80211_hw *hw,
4150c572
JB		 6784 unsigned int changed_flags,
6785 unsigned int *total_flags,
6786 int mc_count, struct dev_addr_list *mc_list)
6787{
5ec03976 6788 struct iwl3945_priv *priv = hw->priv;
352bc8de 6789 __le32 *filter_flags = &priv->staging_rxon.filter_flags;
25b3f57c 6790
352bc8de
ZY		 6791 IWL_DEBUG_MAC80211("Enter: changed: 0x%x, total: 0x%x\n",
6792 changed_flags, *total_flags);
6793
6794 if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
6795 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
6796 *filter_flags |= RXON_FILTER_PROMISC_MSK;
6797 else
6798 *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
6799 }
6800 if (changed_flags & FIF_ALLMULTI) {
6801 if (*total_flags & FIF_ALLMULTI)
6802 *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
6803 else
6804 *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
6805 }
6806 if (changed_flags & FIF_CONTROL) {
6807 if (*total_flags & FIF_CONTROL)
6808 *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
6809 else
6810 *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
5ec03976 6811 }
352bc8de
ZY		 6812 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
6813 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
6814 *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
6815 else
6816 *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
6817 }
6818
6819 /* We avoid iwl_commit_rxon here to commit the new filter flags
6820 * since mac80211 will call ieee80211_hw_config immediately.
6821 * (mc_list is not supported at this time). Otherwise, we need to
6822 * queue a background iwl_commit_rxon work.
6823 */
6824
6825 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
25b3f57c 6826 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
4150c572
JB		 6827}
6828
bb8c093b 6829static void iwl3945_mac_remove_interface(struct ieee80211_hw *hw,
b481de9c
ZY		 6830 struct ieee80211_if_init_conf *conf)
6831{
bb8c093b 6832 struct iwl3945_priv *priv = hw->priv;
b481de9c
ZY		 6833
6834 IWL_DEBUG_MAC80211("enter\n");
6835
6836 mutex_lock(&priv->mutex);
6ef89d0a 6837
fde3571f
MA		 6838 if (iwl3945_is_ready_rf(priv)) {
6839 iwl3945_scan_cancel_timeout(priv, 100);
fde3571f
MA		 6840 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6841 iwl3945_commit_rxon(priv);
6842 }
32bfd35d
JB		 6843 if (priv->vif == conf->vif) {
6844 priv->vif = NULL;
b481de9c 6845 memset(priv->bssid, 0, ETH_ALEN);
b481de9c
ZY		 6846 }
6847 mutex_unlock(&priv->mutex);
6848
6849 IWL_DEBUG_MAC80211("leave\n");
b481de9c
ZY		 6850}
6851
cd56d331
AK		 6852#define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
6853
6854static void iwl3945_bss_info_changed(struct ieee80211_hw *hw,
6855 struct ieee80211_vif *vif,
6856 struct ieee80211_bss_conf *bss_conf,
6857 u32 changes)
6858{
6859 struct iwl3945_priv *priv = hw->priv;
6860
6861 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
6862
6863 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
6864 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
6865 bss_conf->use_short_preamble);
6866 if (bss_conf->use_short_preamble)
6867 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6868 else
6869 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6870 }
6871
6872 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
6873 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
6874 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
6875 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
6876 else
6877 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
6878 }
6879
6880 if (changes & BSS_CHANGED_ASSOC) {
6881 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
6882 /* This should never happen as this function should
6883 * never be called from interrupt context. */
6884 if (WARN_ON_ONCE(in_interrupt()))
6885 return;
6886 if (bss_conf->assoc) {
6887 priv->assoc_id = bss_conf->aid;
6888 priv->beacon_int = bss_conf->beacon_int;
6889 priv->timestamp0 = bss_conf->timestamp & 0xFFFFFFFF;
6890 priv->timestamp1 = (bss_conf->timestamp >> 32) &
6891 0xFFFFFFFF;
6892 priv->assoc_capability = bss_conf->assoc_capability;
6893 priv->next_scan_jiffies = jiffies +
6894 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
6895 mutex_lock(&priv->mutex);
6896 iwl3945_post_associate(priv);
6897 mutex_unlock(&priv->mutex);
6898 } else {
6899 priv->assoc_id = 0;
6900 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
6901 }
6902 } else if (changes && iwl3945_is_associated(priv) && priv->assoc_id) {
6903 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
6904 iwl3945_send_rxon_assoc(priv);
6905 }
6906
6907}
6908
bb8c093b 6909static int iwl3945_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
b481de9c
ZY		 6910{
6911 int rc = 0;
6912 unsigned long flags;
bb8c093b 6913 struct iwl3945_priv *priv = hw->priv;
9387b7ca 6914 DECLARE_SSID_BUF(ssid_buf);
b481de9c
ZY		 6915
6916 IWL_DEBUG_MAC80211("enter\n");
6917
15e869d8 6918 mutex_lock(&priv->mutex);
b481de9c
ZY		 6919 spin_lock_irqsave(&priv->lock, flags);
6920
bb8c093b 6921 if (!iwl3945_is_ready_rf(priv)) {
b481de9c
ZY		 6922 rc = -EIO;
6923 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
6924 goto out_unlock;
6925 }
6926
05c914fe 6927 if (priv->iw_mode == NL80211_IFTYPE_AP) { /* APs don't scan */
b481de9c
ZY		 6928 rc = -EIO;
6929 IWL_ERROR("ERROR: APs don't scan\n");
6930 goto out_unlock;
6931 }
6932
7878a5a4
MA		 6933 /* we don't schedule scan within next_scan_jiffies period */
6934 if (priv->next_scan_jiffies &&
6935 time_after(priv->next_scan_jiffies, jiffies)) {
6936 rc = -EAGAIN;
6937 goto out_unlock;
6938 }
15dbf1b7
BM		 6939 /* if we just finished scan ask for delay for a broadcast scan */
6940 if ((len == 0) && priv->last_scan_jiffies &&
6941 time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN,
6942 jiffies)) {
b481de9c
ZY		 6943 rc = -EAGAIN;
6944 goto out_unlock;
6945 }
6946 if (len) {
7878a5a4 6947 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
9387b7ca 6948 print_ssid(ssid_buf, ssid, len), (int)len);
b481de9c
ZY		 6949
6950 priv->one_direct_scan = 1;
6951 priv->direct_ssid_len = (u8)
6952 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
6953 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
6ef89d0a
MA		 6954 } else
6955 priv->one_direct_scan = 0;
b481de9c 6956
bb8c093b 6957 rc = iwl3945_scan_initiate(priv);
b481de9c
ZY		 6958
6959 IWL_DEBUG_MAC80211("leave\n");
6960
6961out_unlock:
6962 spin_unlock_irqrestore(&priv->lock, flags);
15e869d8 6963 mutex_unlock(&priv->mutex);
b481de9c
ZY		 6964
6965 return rc;
6966}
6967
bb8c093b 6968static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
b481de9c
ZY		 6969 const u8 *local_addr, const u8 *addr,
6970 struct ieee80211_key_conf *key)
6971{
bb8c093b 6972 struct iwl3945_priv *priv = hw->priv;
b481de9c
ZY		 6973 int rc = 0;
6974 u8 sta_id;
6975
6976 IWL_DEBUG_MAC80211("enter\n");
6977
bb8c093b 6978 if (!iwl3945_param_hwcrypto) {
b481de9c
ZY		 6979 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
6980 return -EOPNOTSUPP;
6981 }
6982
6983 if (is_zero_ether_addr(addr))
6984 /* only support pairwise keys */
6985 return -EOPNOTSUPP;
6986
bb8c093b 6987 sta_id = iwl3945_hw_find_station(priv, addr);
b481de9c 6988 if (sta_id == IWL_INVALID_STATION) {
e174961c
JB		 6989 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
6990 addr);
b481de9c
ZY		 6991 return -EINVAL;
6992 }
6993
6994 mutex_lock(&priv->mutex);
6995
bb8c093b 6996 iwl3945_scan_cancel_timeout(priv, 100);
15e869d8 6997
b481de9c
ZY		 6998 switch (cmd) {
6999 case SET_KEY:
bb8c093b 7000 rc = iwl3945_update_sta_key_info(priv, key, sta_id);
b481de9c 7001 if (!rc) {
bb8c093b
CH		 7002 iwl3945_set_rxon_hwcrypto(priv, 1);
7003 iwl3945_commit_rxon(priv);
b481de9c
ZY		 7004 key->hw_key_idx = sta_id;
7005 IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7006 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
7007 }
7008 break;
7009 case DISABLE_KEY:
bb8c093b 7010 rc = iwl3945_clear_sta_key_info(priv, sta_id);
b481de9c 7011 if (!rc) {
bb8c093b
CH		 7012 iwl3945_set_rxon_hwcrypto(priv, 0);
7013 iwl3945_commit_rxon(priv);
b481de9c
ZY		 7014 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7015 }
7016 break;
7017 default:
7018 rc = -EINVAL;
7019 }
7020
7021 IWL_DEBUG_MAC80211("leave\n");
7022 mutex_unlock(&priv->mutex);
7023
7024 return rc;
7025}
7026
e100bb64 7027static int iwl3945_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
b481de9c
ZY		 7028 const struct ieee80211_tx_queue_params *params)
7029{
bb8c093b 7030 struct iwl3945_priv *priv = hw->priv;
b481de9c
ZY		 7031 unsigned long flags;
7032 int q;
b481de9c
ZY		 7033
7034 IWL_DEBUG_MAC80211("enter\n");
7035
bb8c093b 7036 if (!iwl3945_is_ready_rf(priv)) {
b481de9c
ZY		 7037 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7038 return -EIO;
7039 }
7040
7041 if (queue >= AC_NUM) {
7042 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7043 return 0;
7044 }
7045
b481de9c
ZY		 7046 if (!priv->qos_data.qos_enable) {
7047 priv->qos_data.qos_active = 0;
7048 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7049 return 0;
7050 }
7051 q = AC_NUM - 1 - queue;
7052
7053 spin_lock_irqsave(&priv->lock, flags);
7054
7055 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
7056 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
7057 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
7058 priv->qos_data.def_qos_parm.ac[q].edca_txop =
3330d7be 7059 cpu_to_le16((params->txop * 32));
b481de9c
ZY		 7060
7061 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
7062 priv->qos_data.qos_active = 1;
7063
7064 spin_unlock_irqrestore(&priv->lock, flags);
7065
7066 mutex_lock(&priv->mutex);
05c914fe 7067 if (priv->iw_mode == NL80211_IFTYPE_AP)
bb8c093b
CH		 7068 iwl3945_activate_qos(priv, 1);
7069 else if (priv->assoc_id && iwl3945_is_associated(priv))
7070 iwl3945_activate_qos(priv, 0);
b481de9c
ZY		 7071
7072 mutex_unlock(&priv->mutex);
7073
b481de9c
ZY		 7074 IWL_DEBUG_MAC80211("leave\n");
7075 return 0;
7076}
7077
bb8c093b 7078static int iwl3945_mac_get_tx_stats(struct ieee80211_hw *hw,
b481de9c
ZY		 7079 struct ieee80211_tx_queue_stats *stats)
7080{
bb8c093b 7081 struct iwl3945_priv *priv = hw->priv;
b481de9c 7082 int i, avail;
bb8c093b
CH		 7083 struct iwl3945_tx_queue *txq;
7084 struct iwl3945_queue *q;
b481de9c
ZY		 7085 unsigned long flags;
7086
7087 IWL_DEBUG_MAC80211("enter\n");
7088
bb8c093b 7089 if (!iwl3945_is_ready_rf(priv)) {
b481de9c
ZY		 7090 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7091 return -EIO;
7092 }
7093
7094 spin_lock_irqsave(&priv->lock, flags);
7095
7096 for (i = 0; i < AC_NUM; i++) {
7097 txq = &priv->txq[i];
7098 q = &txq->q;
bb8c093b 7099 avail = iwl3945_queue_space(q);
b481de9c 7100
57ffc589
JB		 7101 stats[i].len = q->n_window - avail;
7102 stats[i].limit = q->n_window - q->high_mark;
7103 stats[i].count = q->n_window;
b481de9c
ZY		 7104
7105 }
7106 spin_unlock_irqrestore(&priv->lock, flags);
7107
7108 IWL_DEBUG_MAC80211("leave\n");
7109
7110 return 0;
7111}
7112
bb8c093b 7113static int iwl3945_mac_get_stats(struct ieee80211_hw *hw,
b481de9c
ZY		 7114 struct ieee80211_low_level_stats *stats)
7115{
7116 IWL_DEBUG_MAC80211("enter\n");
7117 IWL_DEBUG_MAC80211("leave\n");
7118
7119 return 0;
7120}
7121
bb8c093b 7122static void iwl3945_mac_reset_tsf(struct ieee80211_hw *hw)
b481de9c 7123{
bb8c093b 7124 struct iwl3945_priv *priv = hw->priv;
b481de9c
ZY		 7125 unsigned long flags;
7126
7127 mutex_lock(&priv->mutex);
7128 IWL_DEBUG_MAC80211("enter\n");
7129
bb8c093b 7130 iwl3945_reset_qos(priv);
292ae174 7131
b481de9c
ZY		 7132 spin_lock_irqsave(&priv->lock, flags);
7133 priv->assoc_id = 0;
7134 priv->assoc_capability = 0;
7135 priv->call_post_assoc_from_beacon = 0;
7136
7137 /* new association get rid of ibss beacon skb */
7138 if (priv->ibss_beacon)
7139 dev_kfree_skb(priv->ibss_beacon);
7140
7141 priv->ibss_beacon = NULL;
7142
7143 priv->beacon_int = priv->hw->conf.beacon_int;
7144 priv->timestamp1 = 0;
7145 priv->timestamp0 = 0;
05c914fe 7146 if ((priv->iw_mode == NL80211_IFTYPE_STATION))
b481de9c
ZY		 7147 priv->beacon_int = 0;
7148
7149 spin_unlock_irqrestore(&priv->lock, flags);
7150
fde3571f
MA		 7151 if (!iwl3945_is_ready_rf(priv)) {
7152 IWL_DEBUG_MAC80211("leave - not ready\n");
7153 mutex_unlock(&priv->mutex);
7154 return;
7155 }
7156
15e869d8
MA		 7157 /* we are restarting association process
7158 * clear RXON_FILTER_ASSOC_MSK bit
7159 */
05c914fe 7160 if (priv->iw_mode != NL80211_IFTYPE_AP) {
bb8c093b 7161 iwl3945_scan_cancel_timeout(priv, 100);
15e869d8 7162 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
bb8c093b 7163 iwl3945_commit_rxon(priv);
15e869d8
MA		 7164 }
7165
b481de9c 7166 /* Per mac80211.h: This is only used in IBSS mode... */
05c914fe 7167 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
15e869d8 7168
b481de9c
ZY		 7169 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7170 mutex_unlock(&priv->mutex);
7171 return;
b481de9c
ZY		 7172 }
7173
bb8c093b 7174 iwl3945_set_rate(priv);
b481de9c
ZY		 7175
7176 mutex_unlock(&priv->mutex);
7177
7178 IWL_DEBUG_MAC80211("leave\n");
7179
7180}
7181
e039fa4a 7182static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
b481de9c 7183{
bb8c093b 7184 struct iwl3945_priv *priv = hw->priv;
b481de9c
ZY		 7185 unsigned long flags;
7186
b481de9c
ZY		 7187 IWL_DEBUG_MAC80211("enter\n");
7188
bb8c093b 7189 if (!iwl3945_is_ready_rf(priv)) {
b481de9c 7190 IWL_DEBUG_MAC80211("leave - RF not ready\n");
b481de9c
ZY		 7191 return -EIO;
7192 }
7193
05c914fe 7194 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
b481de9c 7195 IWL_DEBUG_MAC80211("leave - not IBSS\n");
b481de9c
ZY		 7196 return -EIO;
7197 }
7198
7199 spin_lock_irqsave(&priv->lock, flags);
7200
7201 if (priv->ibss_beacon)
7202 dev_kfree_skb(priv->ibss_beacon);
7203
7204 priv->ibss_beacon = skb;
7205
7206 priv->assoc_id = 0;
7207
7208 IWL_DEBUG_MAC80211("leave\n");
7209 spin_unlock_irqrestore(&priv->lock, flags);
7210
bb8c093b 7211 iwl3945_reset_qos(priv);
b481de9c 7212
dc4b1e7d 7213 iwl3945_post_associate(priv);
b481de9c 7214
b481de9c
ZY		 7215
7216 return 0;
7217}
7218
7219/*****************************************************************************
7220 *
7221 * sysfs attributes
7222 *
7223 *****************************************************************************/
7224
c8b0e6e1 7225#ifdef CONFIG_IWL3945_DEBUG
b481de9c
ZY		 7226
7227/*
7228 * The following adds a new attribute to the sysfs representation
7229 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
7230 * used for controlling the debug level.
7231 *
7232 * See the level definitions in iwl for details.
7233 */
7234
7235static ssize_t show_debug_level(struct device_driver *d, char *buf)
7236{
bb8c093b 7237 return sprintf(buf, "0x%08X\n", iwl3945_debug_level);
b481de9c
ZY		 7238}
7239static ssize_t store_debug_level(struct device_driver *d,
7240 const char *buf, size_t count)
7241{
7242 char *p = (char *)buf;
7243 u32 val;
7244
7245 val = simple_strtoul(p, &p, 0);
7246 if (p == buf)
7247 printk(KERN_INFO DRV_NAME
7248 ": %s is not in hex or decimal form.\n", buf);
7249 else
bb8c093b 7250 iwl3945_debug_level = val;
b481de9c
ZY		 7251
7252 return strnlen(buf, count);
7253}
7254
7255static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
7256 show_debug_level, store_debug_level);
7257
c8b0e6e1 7258#endif /* CONFIG_IWL3945_DEBUG */
b481de9c 7259
b481de9c
ZY		 7260static ssize_t show_temperature(struct device *d,
7261 struct device_attribute *attr, char *buf)
7262{
bb8c093b 7263 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
b481de9c 7264
bb8c093b 7265 if (!iwl3945_is_alive(priv))
b481de9c
ZY		 7266 return -EAGAIN;
7267
bb8c093b 7268 return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
b481de9c
ZY		 7269}
7270
7271static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
7272
b481de9c
ZY		 7273static ssize_t show_tx_power(struct device *d,
7274 struct device_attribute *attr, char *buf)
7275{
bb8c093b 7276 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
b481de9c
ZY		 7277 return sprintf(buf, "%d\n", priv->user_txpower_limit);
7278}
7279
7280static ssize_t store_tx_power(struct device *d,
7281 struct device_attribute *attr,
7282 const char *buf, size_t count)
7283{
bb8c093b 7284 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
b481de9c
ZY		 7285 char *p = (char *)buf;
7286 u32 val;
7287
7288 val = simple_strtoul(p, &p, 10);
7289 if (p == buf)
7290 printk(KERN_INFO DRV_NAME
7291 ": %s is not in decimal form.\n", buf);
7292 else
bb8c093b 7293 iwl3945_hw_reg_set_txpower(priv, val);
b481de9c
ZY		 7294
7295 return count;
7296}
7297
7298static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
7299
7300static ssize_t show_flags(struct device *d,
7301 struct device_attribute *attr, char *buf)
7302{
bb8c093b 7303 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
b481de9c
ZY		 7304
7305 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
7306}
7307
7308static ssize_t store_flags(struct device *d,
7309 struct device_attribute *attr,
7310 const char *buf, size_t count)
7311{
bb8c093b 7312 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
b481de9c
ZY		 7313 u32 flags = simple_strtoul(buf, NULL, 0);
7314
7315 mutex_lock(&priv->mutex);
7316 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
7317 /* Cancel any currently running scans... */
bb8c093b 7318 if (iwl3945_scan_cancel_timeout(priv, 100))
b481de9c
ZY		 7319 IWL_WARNING("Could not cancel scan.\n");
7320 else {
7321 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
7322 flags);
7323 priv->staging_rxon.flags = cpu_to_le32(flags);
bb8c093b 7324 iwl3945_commit_rxon(priv);
b481de9c
ZY		 7325 }
7326 }
7327 mutex_unlock(&priv->mutex);
7328
7329 return count;
7330}
7331
7332static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
7333
7334static ssize_t show_filter_flags(struct device *d,
7335 struct device_attribute *attr, char *buf)
7336{
bb8c093b 7337 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
b481de9c
ZY		 7338
7339 return sprintf(buf, "0x%04X\n",
7340 le32_to_cpu(priv->active_rxon.filter_flags));
7341}
7342
7343static ssize_t store_filter_flags(struct device *d,
7344 struct device_attribute *attr,
7345 const char *buf, size_t count)
7346{
bb8c093b 7347 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
b481de9c
ZY		 7348 u32 filter_flags = simple_strtoul(buf, NULL, 0);
7349
7350 mutex_lock(&priv->mutex);
7351 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
7352 /* Cancel any currently running scans... */
bb8c093b 7353 if (iwl3945_scan_cancel_timeout(priv, 100))
b481de9c
ZY		 7354 IWL_WARNING("Could not cancel scan.\n");
7355 else {
7356 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
7357 "0x%04X\n", filter_flags);
7358 priv->staging_rxon.filter_flags =
7359 cpu_to_le32(filter_flags);
bb8c093b 7360 iwl3945_commit_rxon(priv);
b481de9c
ZY		 7361 }
7362 }
7363 mutex_unlock(&priv->mutex);
7364
7365 return count;
7366}
7367
7368static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
7369 store_filter_flags);
7370
c8b0e6e1 7371#ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
b481de9c
ZY		 7372
7373static ssize_t show_measurement(struct device *d,
7374 struct device_attribute *attr, char *buf)
7375{
bb8c093b
CH		 7376 struct iwl3945_priv *priv = dev_get_drvdata(d);
7377 struct iwl3945_spectrum_notification measure_report;
b481de9c 7378 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3ac7f146 7379 u8 *data = (u8 *)&measure_report;
b481de9c
ZY		 7380 unsigned long flags;
7381
7382 spin_lock_irqsave(&priv->lock, flags);
7383 if (!(priv->measurement_status & MEASUREMENT_READY)) {
7384 spin_unlock_irqrestore(&priv->lock, flags);
7385 return 0;
7386 }
7387 memcpy(&measure_report, &priv->measure_report, size);
7388 priv->measurement_status = 0;
7389 spin_unlock_irqrestore(&priv->lock, flags);
7390
7391 while (size && (PAGE_SIZE - len)) {
7392 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7393 PAGE_SIZE - len, 1);
7394 len = strlen(buf);
7395 if (PAGE_SIZE - len)
7396 buf[len++] = '\n';
7397
7398 ofs += 16;
7399 size -= min(size, 16U);
7400 }
7401
7402 return len;
7403}
7404
7405static ssize_t store_measurement(struct device *d,
7406 struct device_attribute *attr,
7407 const char *buf, size_t count)
7408{
bb8c093b 7409 struct iwl3945_priv *priv = dev_get_drvdata(d);
b481de9c
ZY		 7410 struct ieee80211_measurement_params params = {
7411 .channel = le16_to_cpu(priv->active_rxon.channel),
7412 .start_time = cpu_to_le64(priv->last_tsf),
7413 .duration = cpu_to_le16(1),
7414 };
7415 u8 type = IWL_MEASURE_BASIC;
7416 u8 buffer[32];
7417 u8 channel;
7418
7419 if (count) {
7420 char *p = buffer;
7421 strncpy(buffer, buf, min(sizeof(buffer), count));
7422 channel = simple_strtoul(p, NULL, 0);
7423 if (channel)
7424 params.channel = channel;
7425
7426 p = buffer;
7427 while (*p && *p != ' ')
7428 p++;
7429 if (*p)
7430 type = simple_strtoul(p + 1, NULL, 0);
7431 }
7432
7433 IWL_DEBUG_INFO("Invoking measurement of type %d on "
7434 "channel %d (for '%s')\n", type, params.channel, buf);
bb8c093b 7435 iwl3945_get_measurement(priv, &params, type);
b481de9c
ZY		 7436
7437 return count;
7438}
7439
7440static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
7441 show_measurement, store_measurement);
c8b0e6e1 7442#endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
b481de9c 7443
b481de9c
ZY		 7444static ssize_t store_retry_rate(struct device *d,
7445 struct device_attribute *attr,
7446 const char *buf, size_t count)
7447{
bb8c093b 7448 struct iwl3945_priv *priv = dev_get_drvdata(d);
b481de9c
ZY		 7449
7450 priv->retry_rate = simple_strtoul(buf, NULL, 0);
7451 if (priv->retry_rate <= 0)
7452 priv->retry_rate = 1;
7453
7454 return count;
7455}
7456
7457static ssize_t show_retry_rate(struct device *d,
7458 struct device_attribute *attr, char *buf)
7459{
bb8c093b 7460 struct iwl3945_priv *priv = dev_get_drvdata(d);
b481de9c
ZY		 7461 return sprintf(buf, "%d", priv->retry_rate);
7462}
7463
7464static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
7465 store_retry_rate);
7466
7467static ssize_t store_power_level(struct device *d,
7468 struct device_attribute *attr,
7469 const char *buf, size_t count)
7470{
bb8c093b 7471 struct iwl3945_priv *priv = dev_get_drvdata(d);
b481de9c
ZY		 7472 int rc;
7473 int mode;
7474
7475 mode = simple_strtoul(buf, NULL, 0);
7476 mutex_lock(&priv->mutex);
7477
bb8c093b 7478 if (!iwl3945_is_ready(priv)) {
b481de9c
ZY		 7479 rc = -EAGAIN;
7480 goto out;
7481 }
7482
7483 if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
7484 mode = IWL_POWER_AC;
7485 else
7486 mode |= IWL_POWER_ENABLED;
7487
7488 if (mode != priv->power_mode) {
bb8c093b 7489 rc = iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(mode));
b481de9c
ZY		 7490 if (rc) {
7491 IWL_DEBUG_MAC80211("failed setting power mode.\n");
7492 goto out;
7493 }
7494 priv->power_mode = mode;
7495 }
7496
7497 rc = count;
7498
7499 out:
7500 mutex_unlock(&priv->mutex);
7501 return rc;
7502}
7503
7504#define MAX_WX_STRING 80
7505
7506/* Values are in microsecond */
7507static const s32 timeout_duration[] = {
7508 350000,
7509 250000,
7510 75000,
7511 37000,
7512 25000,
7513};
7514static const s32 period_duration[] = {
7515 400000,
7516 700000,
7517 1000000,
7518 1000000,
7519 1000000
7520};
7521
7522static ssize_t show_power_level(struct device *d,
7523 struct device_attribute *attr, char *buf)
7524{
bb8c093b 7525 struct iwl3945_priv *priv = dev_get_drvdata(d);
b481de9c
ZY		 7526 int level = IWL_POWER_LEVEL(priv->power_mode);
7527 char *p = buf;
7528
7529 p += sprintf(p, "%d ", level);
7530 switch (level) {
7531 case IWL_POWER_MODE_CAM:
7532 case IWL_POWER_AC:
7533 p += sprintf(p, "(AC)");
7534 break;
7535 case IWL_POWER_BATTERY:
7536 p += sprintf(p, "(BATTERY)");
7537 break;
7538 default:
7539 p += sprintf(p,
7540 "(Timeout %dms, Period %dms)",
7541 timeout_duration[level - 1] / 1000,
7542 period_duration[level - 1] / 1000);
7543 }
7544
7545 if (!(priv->power_mode & IWL_POWER_ENABLED))
7546 p += sprintf(p, " OFF\n");
7547 else
7548 p += sprintf(p, " \n");
7549
3ac7f146 7550 return p - buf + 1;
b481de9c
ZY		 7551
7552}
7553
7554static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
7555 store_power_level);
7556
7557static ssize_t show_channels(struct device *d,
7558 struct device_attribute *attr, char *buf)
7559{
8318d78a
JB		 7560 /* all this shit doesn't belong into sysfs anyway */
7561 return 0;
b481de9c
ZY		 7562}
7563
7564static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
7565
7566static ssize_t show_statistics(struct device *d,
7567 struct device_attribute *attr, char *buf)
7568{
bb8c093b
CH		 7569 struct iwl3945_priv *priv = dev_get_drvdata(d);
7570 u32 size = sizeof(struct iwl3945_notif_statistics);
b481de9c 7571 u32 len = 0, ofs = 0;
3ac7f146 7572 u8 *data = (u8 *)&priv->statistics;
b481de9c
ZY		 7573 int rc = 0;
7574
bb8c093b 7575 if (!iwl3945_is_alive(priv))
b481de9c
ZY		 7576 return -EAGAIN;
7577
7578 mutex_lock(&priv->mutex);
bb8c093b 7579 rc = iwl3945_send_statistics_request(priv);
b481de9c
ZY		 7580 mutex_unlock(&priv->mutex);
7581
7582 if (rc) {
7583 len = sprintf(buf,
7584 "Error sending statistics request: 0x%08X\n", rc);
7585 return len;
7586 }
7587
7588 while (size && (PAGE_SIZE - len)) {
7589 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7590 PAGE_SIZE - len, 1);
7591 len = strlen(buf);
7592 if (PAGE_SIZE - len)
7593 buf[len++] = '\n';
7594
7595 ofs += 16;
7596 size -= min(size, 16U);
7597 }
7598
7599 return len;
7600}
7601
7602static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
7603
7604static ssize_t show_antenna(struct device *d,
7605 struct device_attribute *attr, char *buf)
7606{
bb8c093b 7607 struct iwl3945_priv *priv = dev_get_drvdata(d);
b481de9c 7608
bb8c093b 7609 if (!iwl3945_is_alive(priv))
b481de9c
ZY		 7610 return -EAGAIN;
7611
7612 return sprintf(buf, "%d\n", priv->antenna);
7613}
7614
7615static ssize_t store_antenna(struct device *d,
7616 struct device_attribute *attr,
7617 const char *buf, size_t count)
7618{
7619 int ant;
bb8c093b 7620 struct iwl3945_priv *priv = dev_get_drvdata(d);
b481de9c
ZY		 7621
7622 if (count == 0)
7623 return 0;
7624
7625 if (sscanf(buf, "%1i", &ant) != 1) {
7626 IWL_DEBUG_INFO("not in hex or decimal form.\n");
7627 return count;
7628 }
7629
7630 if ((ant >= 0) && (ant <= 2)) {
7631 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
bb8c093b 7632 priv->antenna = (enum iwl3945_antenna)ant;
b481de9c
ZY		 7633 } else
7634 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
7635
7636
7637 return count;
7638}
7639
7640static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
7641
7642static ssize_t show_status(struct device *d,
7643 struct device_attribute *attr, char *buf)
7644{
bb8c093b
CH		 7645 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7646 if (!iwl3945_is_alive(priv))
b481de9c
ZY		 7647 return -EAGAIN;
7648 return sprintf(buf, "0x%08x\n", (int)priv->status);
7649}
7650
7651static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
7652
7653static ssize_t dump_error_log(struct device *d,
7654 struct device_attribute *attr,
7655 const char *buf, size_t count)
7656{
7657 char *p = (char *)buf;
7658
7659 if (p[0] == '1')
bb8c093b 7660 iwl3945_dump_nic_error_log((struct iwl3945_priv *)d->driver_data);
b481de9c
ZY		 7661
7662 return strnlen(buf, count);
7663}
7664
7665static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
7666
7667static ssize_t dump_event_log(struct device *d,
7668 struct device_attribute *attr,
7669 const char *buf, size_t count)
7670{
7671 char *p = (char *)buf;
7672
7673 if (p[0] == '1')
bb8c093b 7674 iwl3945_dump_nic_event_log((struct iwl3945_priv *)d->driver_data);
b481de9c
ZY		 7675
7676 return strnlen(buf, count);
7677}
7678
7679static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
7680
7681/*****************************************************************************
7682 *
a96a27f9 7683 * driver setup and tear down
b481de9c
ZY		 7684 *
7685 *****************************************************************************/
7686
bb8c093b 7687static void iwl3945_setup_deferred_work(struct iwl3945_priv *priv)
b481de9c
ZY		 7688{
7689 priv->workqueue = create_workqueue(DRV_NAME);
7690
7691 init_waitqueue_head(&priv->wait_command_queue);
7692
bb8c093b
CH		 7693 INIT_WORK(&priv->up, iwl3945_bg_up);
7694 INIT_WORK(&priv->restart, iwl3945_bg_restart);
7695 INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
7696 INIT_WORK(&priv->scan_completed, iwl3945_bg_scan_completed);
7697 INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
7698 INIT_WORK(&priv->abort_scan, iwl3945_bg_abort_scan);
7699 INIT_WORK(&priv->rf_kill, iwl3945_bg_rf_kill);
7700 INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
bb8c093b
CH		 7701 INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
7702 INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
7703 INIT_DELAYED_WORK(&priv->scan_check, iwl3945_bg_scan_check);
7704
7705 iwl3945_hw_setup_deferred_work(priv);
b481de9c
ZY		 7706
7707 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
bb8c093b 7708 iwl3945_irq_tasklet, (unsigned long)priv);
b481de9c
ZY		 7709}
7710
bb8c093b 7711static void iwl3945_cancel_deferred_work(struct iwl3945_priv *priv)
b481de9c 7712{
bb8c093b 7713 iwl3945_hw_cancel_deferred_work(priv);
b481de9c 7714
e47eb6ad 7715 cancel_delayed_work_sync(&priv->init_alive_start);
b481de9c
ZY		 7716 cancel_delayed_work(&priv->scan_check);
7717 cancel_delayed_work(&priv->alive_start);
b481de9c
ZY		 7718 cancel_work_sync(&priv->beacon_update);
7719}
7720
bb8c093b 7721static struct attribute *iwl3945_sysfs_entries[] = {
b481de9c
ZY		 7722 &dev_attr_antenna.attr,
7723 &dev_attr_channels.attr,
7724 &dev_attr_dump_errors.attr,
7725 &dev_attr_dump_events.attr,
7726 &dev_attr_flags.attr,
7727 &dev_attr_filter_flags.attr,
c8b0e6e1 7728#ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
b481de9c
ZY		 7729 &dev_attr_measurement.attr,
7730#endif
7731 &dev_attr_power_level.attr,
b481de9c 7732 &dev_attr_retry_rate.attr,
b481de9c
ZY		 7733 &dev_attr_statistics.attr,
7734 &dev_attr_status.attr,
7735 &dev_attr_temperature.attr,
b481de9c
ZY		 7736 &dev_attr_tx_power.attr,
7737
7738 NULL
7739};
7740
bb8c093b 7741static struct attribute_group iwl3945_attribute_group = {
b481de9c 7742 .name = NULL, /* put in device directory */
bb8c093b 7743 .attrs = iwl3945_sysfs_entries,
b481de9c
ZY		 7744};
7745
bb8c093b
CH		 7746static struct ieee80211_ops iwl3945_hw_ops = {
7747 .tx = iwl3945_mac_tx,
7748 .start = iwl3945_mac_start,
7749 .stop = iwl3945_mac_stop,
7750 .add_interface = iwl3945_mac_add_interface,
7751 .remove_interface = iwl3945_mac_remove_interface,
7752 .config = iwl3945_mac_config,
7753 .config_interface = iwl3945_mac_config_interface,
7754 .configure_filter = iwl3945_configure_filter,
7755 .set_key = iwl3945_mac_set_key,
7756 .get_stats = iwl3945_mac_get_stats,
7757 .get_tx_stats = iwl3945_mac_get_tx_stats,
7758 .conf_tx = iwl3945_mac_conf_tx,
bb8c093b 7759 .reset_tsf = iwl3945_mac_reset_tsf,
cd56d331 7760 .bss_info_changed = iwl3945_bss_info_changed,
bb8c093b 7761 .hw_scan = iwl3945_mac_hw_scan
b481de9c
ZY		 7762};
7763
bb8c093b 7764static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
b481de9c
ZY		 7765{
7766 int err = 0;
bb8c093b 7767 struct iwl3945_priv *priv;
b481de9c 7768 struct ieee80211_hw *hw;
82b9a121 7769 struct iwl_3945_cfg *cfg = (struct iwl_3945_cfg *)(ent->driver_data);
0359facc 7770 unsigned long flags;
b481de9c 7771
cee53ddb
KA		 7772 /***********************
7773 * 1. Allocating HW data
7774 * ********************/
7775
6440adb5
CB		 7776 /* Disabling hardware scan means that mac80211 will perform scans
7777 * "the hard way", rather than using device's scan. */
bb8c093b 7778 if (iwl3945_param_disable_hw_scan) {
b481de9c 7779 IWL_DEBUG_INFO("Disabling hw_scan\n");
bb8c093b 7780 iwl3945_hw_ops.hw_scan = NULL;
b481de9c
ZY		 7781 }
7782
dfe7d458 7783 if ((iwl3945_param_queues_num > IWL39_MAX_NUM_QUEUES) ||
bb8c093b 7784 (iwl3945_param_queues_num < IWL_MIN_NUM_QUEUES)) {
b481de9c 7785 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
dfe7d458 7786 IWL_MIN_NUM_QUEUES, IWL39_MAX_NUM_QUEUES);
b481de9c
ZY		 7787 err = -EINVAL;
7788 goto out;
7789 }
7790
7791 /* mac80211 allocates memory for this device instance, including
7792 * space for this driver's private structure */
bb8c093b 7793 hw = ieee80211_alloc_hw(sizeof(struct iwl3945_priv), &iwl3945_hw_ops);
b481de9c
ZY		 7794 if (hw == NULL) {
7795 IWL_ERROR("Can not allocate network device\n");
7796 err = -ENOMEM;
7797 goto out;
7798 }
b481de9c 7799
cee53ddb 7800 SET_IEEE80211_DEV(hw, &pdev->dev);
f51359a8 7801
b481de9c
ZY		 7802 priv = hw->priv;
7803 priv->hw = hw;
b481de9c 7804 priv->pci_dev = pdev;
82b9a121 7805 priv->cfg = cfg;
6440adb5 7806
cee53ddb
KA		 7807 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
7808 hw->rate_control_algorithm = "iwl-3945-rs";
7809 hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
7810
6440adb5 7811 /* Select antenna (may be helpful if only one antenna is connected) */
bb8c093b 7812 priv->antenna = (enum iwl3945_antenna)iwl3945_param_antenna;
c8b0e6e1 7813#ifdef CONFIG_IWL3945_DEBUG
bb8c093b 7814 iwl3945_debug_level = iwl3945_param_debug;
b481de9c
ZY		 7815 atomic_set(&priv->restrict_refcnt, 0);
7816#endif
b481de9c 7817
566bfe5a 7818 /* Tell mac80211 our characteristics */
605a0bd6 7819 hw->flags = IEEE80211_HW_SIGNAL_DBM |
566bfe5a 7820 IEEE80211_HW_NOISE_DBM;
b481de9c 7821
f59ac048 7822 hw->wiphy->interface_modes =
f59ac048
LR		 7823 BIT(NL80211_IFTYPE_STATION) |
7824 BIT(NL80211_IFTYPE_ADHOC);
7825
ea4a82dc
LR		 7826 hw->wiphy->fw_handles_regulatory = true;
7827
6440adb5 7828 /* 4 EDCA QOS priorities */
b481de9c
ZY		 7829 hw->queues = 4;
7830
cee53ddb
KA		 7831 /***************************
7832 * 2. Initializing PCI bus
7833 * *************************/
b481de9c
ZY		 7834 if (pci_enable_device(pdev)) {
7835 err = -ENODEV;
7836 goto out_ieee80211_free_hw;
7837 }
7838
7839 pci_set_master(pdev);
7840
b481de9c
ZY		 7841 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7842 if (!err)
7843 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
7844 if (err) {
7845 printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n");
7846 goto out_pci_disable_device;
7847 }
7848
7849 pci_set_drvdata(pdev, priv);
7850 err = pci_request_regions(pdev, DRV_NAME);
7851 if (err)
7852 goto out_pci_disable_device;
6440adb5 7853
cee53ddb
KA		 7854 /***********************
7855 * 3. Read REV Register
7856 * ********************/
b481de9c
ZY		 7857 priv->hw_base = pci_iomap(pdev, 0, 0);
7858 if (!priv->hw_base) {
7859 err = -ENODEV;
7860 goto out_pci_release_regions;
7861 }
7862
7863 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
7864 (unsigned long long) pci_resource_len(pdev, 0));
7865 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
7866
cee53ddb
KA		 7867 /* We disable the RETRY_TIMEOUT register (0x41) to keep
7868 * PCI Tx retries from interfering with C3 CPU state */
7869 pci_write_config_byte(pdev, 0x41, 0x00);
b481de9c 7870
cee53ddb
KA		 7871 /* nic init */
7872 iwl3945_set_bit(priv, CSR_GIO_CHICKEN_BITS,
7873 CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
b481de9c 7874
cee53ddb
KA		 7875 iwl3945_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
7876 err = iwl3945_poll_bit(priv, CSR_GP_CNTRL,
7877 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
7878 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
7879 if (err < 0) {
7880 IWL_DEBUG_INFO("Failed to init the card\n");
7881 goto out_remove_sysfs;
7882 }
b481de9c 7883
cee53ddb
KA		 7884 /***********************
7885 * 4. Read EEPROM
7886 * ********************/
7887 /* Read the EEPROM */
7888 err = iwl3945_eeprom_init(priv);
7889 if (err) {
7890 IWL_ERROR("Unable to init EEPROM\n");
7891 goto out_remove_sysfs;
7892 }
7893 /* MAC Address location in EEPROM same for 3945/4965 */
7894 get_eeprom_mac(priv, priv->mac_addr);
7895 IWL_DEBUG_INFO("MAC address: %pM\n", priv->mac_addr);
7896 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
b481de9c 7897
cee53ddb
KA		 7898 /***********************
7899 * 5. Setup HW Constants
7900 * ********************/
b481de9c 7901 /* Device-specific setup */
bb8c093b 7902 if (iwl3945_hw_set_hw_setting(priv)) {
b481de9c 7903 IWL_ERROR("failed to set hw settings\n");
b481de9c
ZY		 7904 goto out_iounmap;
7905 }
7906
cee53ddb
KA		 7907 /***********************
7908 * 6. Setup priv
7909 * ********************/
7910 priv->retry_rate = 1;
7911 priv->ibss_beacon = NULL;
7912
7913 spin_lock_init(&priv->lock);
7914 spin_lock_init(&priv->power_data.lock);
7915 spin_lock_init(&priv->sta_lock);
7916 spin_lock_init(&priv->hcmd_lock);
7917
7918 INIT_LIST_HEAD(&priv->free_frames);
7919 mutex_init(&priv->mutex);
7920
7921 /* Clear the driver's (not device's) station table */
7922 iwl3945_clear_stations_table(priv);
7923
7924 priv->data_retry_limit = -1;
7925 priv->ieee_channels = NULL;
7926 priv->ieee_rates = NULL;
7927 priv->band = IEEE80211_BAND_2GHZ;
7928
7929 priv->iw_mode = NL80211_IFTYPE_STATION;
7930
bb8c093b 7931 if (iwl3945_param_qos_enable)
b481de9c
ZY		 7932 priv->qos_data.qos_enable = 1;
7933
bb8c093b 7934 iwl3945_reset_qos(priv);
b481de9c
ZY		 7935
7936 priv->qos_data.qos_active = 0;
7937 priv->qos_data.qos_cap.val = 0;
b481de9c 7938
b481de9c
ZY		 7939
7940 priv->rates_mask = IWL_RATES_MASK;
7941 /* If power management is turned on, default to AC mode */
7942 priv->power_mode = IWL_POWER_AC;
7943 priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
7944
cee53ddb 7945 err = iwl3945_init_channel_map(priv);
b481de9c 7946 if (err) {
cee53ddb 7947 IWL_ERROR("initializing regulatory failed: %d\n", err);
b481de9c
ZY		 7948 goto out_release_irq;
7949 }
7950
cee53ddb 7951 err = iwl3945_init_geos(priv);
b481de9c 7952 if (err) {
cee53ddb
KA		 7953 IWL_ERROR("initializing geos failed: %d\n", err);
7954 goto out_free_channel_map;
b481de9c
ZY		 7955 }
7956
cee53ddb
KA		 7957 printk(KERN_INFO DRV_NAME
7958 ": Detected Intel Wireless WiFi Link %s\n", priv->cfg->name);
7959
7960 /***********************************
7961 * 7. Initialize Module Parameters
7962 * **********************************/
7963
7964 /* Initialize module parameter values here */
7965 /* Disable radio (SW RF KILL) via parameter when loading driver */
7966 if (iwl3945_param_disable) {
7967 set_bit(STATUS_RF_KILL_SW, &priv->status);
7968 IWL_DEBUG_INFO("Radio disabled.\n");
849e0dce
RC		 7969 }
7970
cee53ddb
KA		 7971
7972 /***********************
7973 * 8. Setup Services
7974 * ********************/
7975
7976 spin_lock_irqsave(&priv->lock, flags);
7977 iwl3945_disable_interrupts(priv);
7978 spin_unlock_irqrestore(&priv->lock, flags);
7979
7980 err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
849e0dce 7981 if (err) {
cee53ddb
KA		 7982 IWL_ERROR("failed to create sysfs device attributes\n");
7983 goto out_free_geos;
849e0dce 7984 }
849e0dce 7985
cee53ddb
KA		 7986 iwl3945_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
7987 iwl3945_setup_deferred_work(priv);
7988 iwl3945_setup_rx_handlers(priv);
7989
7990 /***********************
7991 * 9. Conclude
7992 * ********************/
7993 pci_save_state(pdev);
7994 pci_disable_device(pdev);
7995
7996 /*********************************
7997 * 10. Setup and Register mac80211
7998 * *******************************/
7999
5a66926a
ZY		 8000 err = ieee80211_register_hw(priv->hw);
8001 if (err) {
8002 IWL_ERROR("Failed to register network device (error %d)\n", err);
cee53ddb 8003 goto out_remove_sysfs;
5a66926a 8004 }
b481de9c 8005
5a66926a
ZY		 8006 priv->hw->conf.beacon_int = 100;
8007 priv->mac80211_registered = 1;
cee53ddb 8008
b481de9c 8009
ebef2008
AK		 8010 err = iwl3945_rfkill_init(priv);
8011 if (err)
8012 IWL_ERROR("Unable to initialize RFKILL system. "
8013 "Ignoring error: %d\n", err);
8014
b481de9c
ZY		 8015 return 0;
8016
cee53ddb
KA		 8017 out_remove_sysfs:
8018 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
849e0dce
RC		 8019 out_free_geos:
8020 iwl3945_free_geos(priv);
8021 out_free_channel_map:
8022 iwl3945_free_channel_map(priv);
cee53ddb 8023
b481de9c
ZY		 8024
8025 out_release_irq:
b481de9c
ZY		 8026 destroy_workqueue(priv->workqueue);
8027 priv->workqueue = NULL;
bb8c093b 8028 iwl3945_unset_hw_setting(priv);
b481de9c
ZY		 8029
8030 out_iounmap:
8031 pci_iounmap(pdev, priv->hw_base);
8032 out_pci_release_regions:
8033 pci_release_regions(pdev);
8034 out_pci_disable_device:
8035 pci_disable_device(pdev);
8036 pci_set_drvdata(pdev, NULL);
8037 out_ieee80211_free_hw:
8038 ieee80211_free_hw(priv->hw);
8039 out:
8040 return err;
8041}
8042
c83dbf68 8043static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
b481de9c 8044{
bb8c093b 8045 struct iwl3945_priv *priv = pci_get_drvdata(pdev);
0359facc 8046 unsigned long flags;
b481de9c
ZY		 8047
8048 if (!priv)
8049 return;
8050
8051 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
8052
b481de9c 8053 set_bit(STATUS_EXIT_PENDING, &priv->status);
b24d22b1 8054
bb8c093b 8055 iwl3945_down(priv);
b481de9c 8056
0359facc
MA		 8057 /* make sure we flush any pending irq or
8058 * tasklet for the driver
8059 */
8060 spin_lock_irqsave(&priv->lock, flags);
8061 iwl3945_disable_interrupts(priv);
8062 spin_unlock_irqrestore(&priv->lock, flags);
8063
8064 iwl_synchronize_irq(priv);
8065
bb8c093b 8066 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
b481de9c 8067
ebef2008 8068 iwl3945_rfkill_unregister(priv);
bb8c093b 8069 iwl3945_dealloc_ucode_pci(priv);
b481de9c
ZY		 8070
8071 if (priv->rxq.bd)
bb8c093b
CH		 8072 iwl3945_rx_queue_free(priv, &priv->rxq);
8073 iwl3945_hw_txq_ctx_free(priv);
b481de9c 8074
bb8c093b
CH		 8075 iwl3945_unset_hw_setting(priv);
8076 iwl3945_clear_stations_table(priv);
b481de9c 8077
3ac7f146 8078 if (priv->mac80211_registered)
b481de9c 8079 ieee80211_unregister_hw(priv->hw);
b481de9c 8080
6ef89d0a
MA		 8081 /*netif_stop_queue(dev); */
8082 flush_workqueue(priv->workqueue);
8083
bb8c093b 8084 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
b481de9c
ZY		 8085 * priv->workqueue... so we can't take down the workqueue
8086 * until now... */
8087 destroy_workqueue(priv->workqueue);
8088 priv->workqueue = NULL;
8089
b481de9c
ZY		 8090 pci_iounmap(pdev, priv->hw_base);
8091 pci_release_regions(pdev);
8092 pci_disable_device(pdev);
8093 pci_set_drvdata(pdev, NULL);
8094
849e0dce
RC		 8095 iwl3945_free_channel_map(priv);
8096 iwl3945_free_geos(priv);
261415f7 8097 kfree(priv->scan);
b481de9c
ZY		 8098 if (priv->ibss_beacon)
8099 dev_kfree_skb(priv->ibss_beacon);
8100
8101 ieee80211_free_hw(priv->hw);
8102}
8103
8104#ifdef CONFIG_PM
8105
bb8c093b 8106static int iwl3945_pci_suspend(struct pci_dev *pdev, pm_message_t state)
b481de9c 8107{
bb8c093b 8108 struct iwl3945_priv *priv = pci_get_drvdata(pdev);
b481de9c 8109
e655b9f0
ZY		 8110 if (priv->is_open) {
8111 set_bit(STATUS_IN_SUSPEND, &priv->status);
8112 iwl3945_mac_stop(priv->hw);
8113 priv->is_open = 1;
8114 }
b481de9c 8115
b481de9c
ZY		 8116 pci_set_power_state(pdev, PCI_D3hot);
8117
b481de9c
ZY		 8118 return 0;
8119}
8120
bb8c093b 8121static int iwl3945_pci_resume(struct pci_dev *pdev)
b481de9c 8122{
bb8c093b 8123 struct iwl3945_priv *priv = pci_get_drvdata(pdev);
b481de9c 8124
b481de9c 8125 pci_set_power_state(pdev, PCI_D0);
b481de9c 8126
e655b9f0
ZY		 8127 if (priv->is_open)
8128 iwl3945_mac_start(priv->hw);
b481de9c 8129
e655b9f0 8130 clear_bit(STATUS_IN_SUSPEND, &priv->status);
b481de9c
ZY		 8131 return 0;
8132}
8133
8134#endif /* CONFIG_PM */
8135
ebef2008 8136/*************** RFKILL FUNCTIONS **********/
80fcc9e2 8137#ifdef CONFIG_IWL3945_RFKILL
ebef2008
AK		 8138/* software rf-kill from user */
8139static int iwl3945_rfkill_soft_rf_kill(void *data, enum rfkill_state state)
8140{
8141 struct iwl3945_priv *priv = data;
8142 int err = 0;
8143
80fcc9e2 8144 if (!priv->rfkill)
ebef2008
AK		 8145 return 0;
8146
8147 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
8148 return 0;
8149
a96a27f9 8150 IWL_DEBUG_RF_KILL("we received soft RFKILL set to state %d\n", state);
ebef2008
AK		 8151 mutex_lock(&priv->mutex);
8152
8153 switch (state) {
acdfe9b4 8154 case RFKILL_STATE_UNBLOCKED:
80fcc9e2 8155 if (iwl3945_is_rfkill_hw(priv)) {
ebef2008 8156 err = -EBUSY;
80fcc9e2
AG		 8157 goto out_unlock;
8158 }
8159 iwl3945_radio_kill_sw(priv, 0);
ebef2008 8160 break;
acdfe9b4 8161 case RFKILL_STATE_SOFT_BLOCKED:
ebef2008 8162 iwl3945_radio_kill_sw(priv, 1);
ebef2008 8163 break;
acdfe9b4 8164 default:
a96a27f9 8165 IWL_WARNING("we received unexpected RFKILL state %d\n", state);
acdfe9b4 8166 break;
ebef2008 8167 }
80fcc9e2 8168out_unlock:
ebef2008
AK		 8169 mutex_unlock(&priv->mutex);
8170
8171 return err;
8172}
8173
8174int iwl3945_rfkill_init(struct iwl3945_priv *priv)
8175{
8176 struct device *device = wiphy_dev(priv->hw->wiphy);
8177 int ret = 0;
8178
8179 BUG_ON(device == NULL);
8180
8181 IWL_DEBUG_RF_KILL("Initializing RFKILL.\n");
80fcc9e2
AG		 8182 priv->rfkill = rfkill_allocate(device, RFKILL_TYPE_WLAN);
8183 if (!priv->rfkill) {
ebef2008
AK		 8184 IWL_ERROR("Unable to allocate rfkill device.\n");
8185 ret = -ENOMEM;
8186 goto error;
8187 }
8188
80fcc9e2
AG		 8189 priv->rfkill->name = priv->cfg->name;
8190 priv->rfkill->data = priv;
8191 priv->rfkill->state = RFKILL_STATE_UNBLOCKED;
8192 priv->rfkill->toggle_radio = iwl3945_rfkill_soft_rf_kill;
8193 priv->rfkill->user_claim_unsupported = 1;
ebef2008 8194
80fcc9e2
AG		 8195 priv->rfkill->dev.class->suspend = NULL;
8196 priv->rfkill->dev.class->resume = NULL;
ebef2008 8197
80fcc9e2 8198 ret = rfkill_register(priv->rfkill);
ebef2008
AK		 8199 if (ret) {
8200 IWL_ERROR("Unable to register rfkill: %d\n", ret);
80fcc9e2 8201 goto freed_rfkill;
ebef2008
AK		 8202 }
8203
8204 IWL_DEBUG_RF_KILL("RFKILL initialization complete.\n");
8205 return ret;
8206
ebef2008 8207freed_rfkill:
80fcc9e2
AG		 8208 if (priv->rfkill != NULL)
8209 rfkill_free(priv->rfkill);
8210 priv->rfkill = NULL;
ebef2008
AK		 8211
8212error:
8213 IWL_DEBUG_RF_KILL("RFKILL initialization complete.\n");
8214 return ret;
8215}
8216
8217void iwl3945_rfkill_unregister(struct iwl3945_priv *priv)
8218{
80fcc9e2
AG		 8219 if (priv->rfkill)
8220 rfkill_unregister(priv->rfkill);
ebef2008 8221
80fcc9e2 8222 priv->rfkill = NULL;
ebef2008
AK		 8223}
8224
8225/* set rf-kill to the right state. */
8226void iwl3945_rfkill_set_hw_state(struct iwl3945_priv *priv)
8227{
8228
80fcc9e2
AG		 8229 if (!priv->rfkill)
8230 return;
8231
8232 if (iwl3945_is_rfkill_hw(priv)) {
8233 rfkill_force_state(priv->rfkill, RFKILL_STATE_HARD_BLOCKED);
ebef2008 8234 return;
80fcc9e2 8235 }
ebef2008 8236
80fcc9e2
AG		 8237 if (!iwl3945_is_rfkill_sw(priv))
8238 rfkill_force_state(priv->rfkill, RFKILL_STATE_UNBLOCKED);
ebef2008 8239 else
80fcc9e2 8240 rfkill_force_state(priv->rfkill, RFKILL_STATE_SOFT_BLOCKED);
ebef2008
AK		 8241}
8242#endif
8243
b481de9c
ZY		 8244/*****************************************************************************
8245 *
8246 * driver and module entry point
8247 *
8248 *****************************************************************************/
8249
bb8c093b 8250static struct pci_driver iwl3945_driver = {
b481de9c 8251 .name = DRV_NAME,
bb8c093b
CH		 8252 .id_table = iwl3945_hw_card_ids,
8253 .probe = iwl3945_pci_probe,
8254 .remove = __devexit_p(iwl3945_pci_remove),
b481de9c 8255#ifdef CONFIG_PM
bb8c093b
CH		 8256 .suspend = iwl3945_pci_suspend,
8257 .resume = iwl3945_pci_resume,
b481de9c
ZY		 8258#endif
8259};
8260
bb8c093b 8261static int __init iwl3945_init(void)
b481de9c
ZY		 8262{
8263
8264 int ret;
8265 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
8266 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
897e1cf2
RC		 8267
8268 ret = iwl3945_rate_control_register();
8269 if (ret) {
8270 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
8271 return ret;
8272 }
8273
bb8c093b 8274 ret = pci_register_driver(&iwl3945_driver);
b481de9c
ZY		 8275 if (ret) {
8276 IWL_ERROR("Unable to initialize PCI module\n");
897e1cf2 8277 goto error_register;
b481de9c 8278 }
c8b0e6e1 8279#ifdef CONFIG_IWL3945_DEBUG
bb8c093b 8280 ret = driver_create_file(&iwl3945_driver.driver, &driver_attr_debug_level);
b481de9c
ZY		 8281 if (ret) {
8282 IWL_ERROR("Unable to create driver sysfs file\n");
897e1cf2 8283 goto error_debug;
b481de9c
ZY		 8284 }
8285#endif
8286
8287 return ret;
897e1cf2
RC		 8288
8289#ifdef CONFIG_IWL3945_DEBUG
8290error_debug:
8291 pci_unregister_driver(&iwl3945_driver);
8292#endif
8293error_register:
8294 iwl3945_rate_control_unregister();
8295 return ret;
b481de9c
ZY		 8296}
8297
bb8c093b 8298static void __exit iwl3945_exit(void)
b481de9c 8299{
c8b0e6e1 8300#ifdef CONFIG_IWL3945_DEBUG
bb8c093b 8301 driver_remove_file(&iwl3945_driver.driver, &driver_attr_debug_level);
b481de9c 8302#endif
bb8c093b 8303 pci_unregister_driver(&iwl3945_driver);
897e1cf2 8304 iwl3945_rate_control_unregister();
b481de9c
ZY		 8305}
8306
25cb6cad
ZY		 8307MODULE_FIRMWARE("iwlwifi-3945" IWL3945_UCODE_API ".ucode");
8308
bb8c093b 8309module_param_named(antenna, iwl3945_param_antenna, int, 0444);
b481de9c 8310MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
bb8c093b 8311module_param_named(disable, iwl3945_param_disable, int, 0444);
b481de9c 8312MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
bb8c093b 8313module_param_named(hwcrypto, iwl3945_param_hwcrypto, int, 0444);
b481de9c
ZY		 8314MODULE_PARM_DESC(hwcrypto,
8315 "using hardware crypto engine (default 0 [software])\n");
bb8c093b 8316module_param_named(debug, iwl3945_param_debug, int, 0444);
b481de9c 8317MODULE_PARM_DESC(debug, "debug output mask");
bb8c093b 8318module_param_named(disable_hw_scan, iwl3945_param_disable_hw_scan, int, 0444);
b481de9c
ZY		 8319MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
8320
bb8c093b 8321module_param_named(queues_num, iwl3945_param_queues_num, int, 0444);
b481de9c
ZY		 8322MODULE_PARM_DESC(queues_num, "number of hw queues.");
8323
8324/* QoS */
bb8c093b 8325module_param_named(qos_enable, iwl3945_param_qos_enable, int, 0444);
b481de9c
ZY		 8326MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
8327
bb8c093b
CH		 8328module_exit(iwl3945_exit);
8329module_init(iwl3945_init);
Linux kernel - Deliverables
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