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iwlwifi: rename iwl_eeprom_aqcuire_semaphore to _acquire_
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl3945-base.c
CommitLineData
b481de9c
ZY		 1/******************************************************************************
2 *
3 * Copyright(c) 2003 - 2007 Intel Corporation. All rights reserved.
4 *
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
20 *
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
23 *
24 * Contact Information:
25 * James P. Ketrenos <ipw2100-admin@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
29
30/*
31 * NOTE: This file (iwl-base.c) is used to build to multiple hardware targets
32 * by defining IWL to either 3945 or 4965. The Makefile used when building
33 * the base targets will create base-3945.o and base-4965.o
34 *
35 * The eventual goal is to move as many of the #if IWL / #endif blocks out of
36 * this file and into the hardware specific implementation files (iwl-XXXX.c)
37 * and leave only the common (non #ifdef sprinkled) code in this file
38 */
39
40#include <linux/kernel.h>
41#include <linux/module.h>
42#include <linux/version.h>
43#include <linux/init.h>
44#include <linux/pci.h>
45#include <linux/dma-mapping.h>
46#include <linux/delay.h>
47#include <linux/skbuff.h>
48#include <linux/netdevice.h>
49#include <linux/wireless.h>
50#include <linux/firmware.h>
b481de9c
ZY		 51#include <linux/etherdevice.h>
52#include <linux/if_arp.h>
53
54#include <net/ieee80211_radiotap.h>
55#include <net/mac80211.h>
56
57#include <asm/div64.h>
58
1156b2c6
ZY		 59#define IWL 3945
60
b481de9c
ZY		 61#include "iwlwifi.h"
62#include "iwl-3945.h"
63#include "iwl-helpers.h"
64
65#ifdef CONFIG_IWLWIFI_DEBUG
66u32 iwl_debug_level;
67#endif
68
69/******************************************************************************
70 *
71 * module boiler plate
72 *
73 ******************************************************************************/
74
75/* module parameters */
76int iwl_param_disable_hw_scan;
77int iwl_param_debug;
78int iwl_param_disable; /* def: enable radio */
79int iwl_param_antenna; /* def: 0 = both antennas (use diversity) */
80int iwl_param_hwcrypto; /* def: using software encryption */
81int iwl_param_qos_enable = 1;
82int iwl_param_queues_num = IWL_MAX_NUM_QUEUES;
83
84/*
85 * module name, copyright, version, etc.
86 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
87 */
88
89#define DRV_DESCRIPTION \
90"Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
91
92#ifdef CONFIG_IWLWIFI_DEBUG
93#define VD "d"
94#else
95#define VD
96#endif
97
98#ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
99#define VS "s"
100#else
101#define VS
102#endif
103
61f62253 104#define IWLWIFI_VERSION "1.1.17k" VD VS
b481de9c
ZY		 105#define DRV_COPYRIGHT "Copyright(c) 2003-2007 Intel Corporation"
106#define DRV_VERSION IWLWIFI_VERSION
107
108/* Change firmware file name, using "-" and incrementing number,
109 * *only* when uCode interface or architecture changes so that it
110 * is not compatible with earlier drivers.
111 * This number will also appear in << 8 position of 1st dword of uCode file */
112#define IWL3945_UCODE_API "-1"
113
114MODULE_DESCRIPTION(DRV_DESCRIPTION);
115MODULE_VERSION(DRV_VERSION);
116MODULE_AUTHOR(DRV_COPYRIGHT);
117MODULE_LICENSE("GPL");
118
119__le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
120{
121 u16 fc = le16_to_cpu(hdr->frame_control);
122 int hdr_len = ieee80211_get_hdrlen(fc);
123
124 if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
125 return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
126 return NULL;
127}
128
129static const struct ieee80211_hw_mode *iwl_get_hw_mode(
130 struct iwl_priv *priv, int mode)
131{
132 int i;
133
134 for (i = 0; i < 3; i++)
135 if (priv->modes[i].mode == mode)
136 return &priv->modes[i];
137
138 return NULL;
139}
140
141static int iwl_is_empty_essid(const char *essid, int essid_len)
142{
143 /* Single white space is for Linksys APs */
144 if (essid_len == 1 && essid[0] == ' ')
145 return 1;
146
147 /* Otherwise, if the entire essid is 0, we assume it is hidden */
148 while (essid_len) {
149 essid_len--;
150 if (essid[essid_len] != '\0')
151 return 0;
152 }
153
154 return 1;
155}
156
157static const char *iwl_escape_essid(const char *essid, u8 essid_len)
158{
159 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
160 const char *s = essid;
161 char *d = escaped;
162
163 if (iwl_is_empty_essid(essid, essid_len)) {
164 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
165 return escaped;
166 }
167
168 essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
169 while (essid_len--) {
170 if (*s == '\0') {
171 *d++ = '\\';
172 *d++ = '0';
173 s++;
174 } else
175 *d++ = *s++;
176 }
177 *d = '\0';
178 return escaped;
179}
180
181static void iwl_print_hex_dump(int level, void *p, u32 len)
182{
183#ifdef CONFIG_IWLWIFI_DEBUG
184 if (!(iwl_debug_level & level))
185 return;
186
187 print_hex_dump(KERN_DEBUG, "iwl data: ", DUMP_PREFIX_OFFSET, 16, 1,
188 p, len, 1);
189#endif
190}
191
192/*************** DMA-QUEUE-GENERAL-FUNCTIONS *****
193 * DMA services
194 *
195 * Theory of operation
196 *
197 * A queue is a circular buffers with 'Read' and 'Write' pointers.
198 * 2 empty entries always kept in the buffer to protect from overflow.
199 *
200 * For Tx queue, there are low mark and high mark limits. If, after queuing
201 * the packet for Tx, free space become < low mark, Tx queue stopped. When
202 * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
203 * Tx queue resumed.
204 *
583fab37 205 * The IWL operates with six queues, one receive queue in the device's
b481de9c
ZY		 206 * sram, one transmit queue for sending commands to the device firmware,
207 * and four transmit queues for data.
208 ***************************************************/
209
210static int iwl_queue_space(const struct iwl_queue *q)
211{
212 int s = q->last_used - q->first_empty;
213
214 if (q->last_used > q->first_empty)
215 s -= q->n_bd;
216
217 if (s <= 0)
218 s += q->n_window;
219 /* keep some reserve to not confuse empty and full situations */
220 s -= 2;
221 if (s < 0)
222 s = 0;
223 return s;
224}
225
226/* XXX: n_bd must be power-of-two size */
227static inline int iwl_queue_inc_wrap(int index, int n_bd)
228{
229 return ++index & (n_bd - 1);
230}
231
232/* XXX: n_bd must be power-of-two size */
233static inline int iwl_queue_dec_wrap(int index, int n_bd)
234{
235 return --index & (n_bd - 1);
236}
237
238static inline int x2_queue_used(const struct iwl_queue *q, int i)
239{
240 return q->first_empty > q->last_used ?
241 (i >= q->last_used && i < q->first_empty) :
242 !(i < q->last_used && i >= q->first_empty);
243}
244
245static inline u8 get_cmd_index(struct iwl_queue *q, u32 index, int is_huge)
246{
247 if (is_huge)
248 return q->n_window;
249
250 return index & (q->n_window - 1);
251}
252
253static int iwl_queue_init(struct iwl_priv *priv, struct iwl_queue *q,
254 int count, int slots_num, u32 id)
255{
256 q->n_bd = count;
257 q->n_window = slots_num;
258 q->id = id;
259
260 /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
261 * and iwl_queue_dec_wrap are broken. */
262 BUG_ON(!is_power_of_2(count));
263
264 /* slots_num must be power-of-two size, otherwise
265 * get_cmd_index is broken. */
266 BUG_ON(!is_power_of_2(slots_num));
267
268 q->low_mark = q->n_window / 4;
269 if (q->low_mark < 4)
270 q->low_mark = 4;
271
272 q->high_mark = q->n_window / 8;
273 if (q->high_mark < 2)
274 q->high_mark = 2;
275
276 q->first_empty = q->last_used = 0;
277
278 return 0;
279}
280
281static int iwl_tx_queue_alloc(struct iwl_priv *priv,
282 struct iwl_tx_queue *txq, u32 id)
283{
284 struct pci_dev *dev = priv->pci_dev;
285
286 if (id != IWL_CMD_QUEUE_NUM) {
287 txq->txb = kmalloc(sizeof(txq->txb[0]) *
288 TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
289 if (!txq->txb) {
01ebd063 290 IWL_ERROR("kmalloc for auxiliary BD "
b481de9c
ZY		 291 "structures failed\n");
292 goto error;
293 }
294 } else
295 txq->txb = NULL;
296
297 txq->bd = pci_alloc_consistent(dev,
298 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
299 &txq->q.dma_addr);
300
301 if (!txq->bd) {
302 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
303 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
304 goto error;
305 }
306 txq->q.id = id;
307
308 return 0;
309
310 error:
311 if (txq->txb) {
312 kfree(txq->txb);
313 txq->txb = NULL;
314 }
315
316 return -ENOMEM;
317}
318
319int iwl_tx_queue_init(struct iwl_priv *priv,
320 struct iwl_tx_queue *txq, int slots_num, u32 txq_id)
321{
322 struct pci_dev *dev = priv->pci_dev;
323 int len;
324 int rc = 0;
325
01ebd063 326 /* allocate command space + one big command for scan since scan
b481de9c
ZY		 327 * command is very huge the system will not have two scan at the
328 * same time */
329 len = sizeof(struct iwl_cmd) * slots_num;
330 if (txq_id == IWL_CMD_QUEUE_NUM)
331 len += IWL_MAX_SCAN_SIZE;
332 txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
333 if (!txq->cmd)
334 return -ENOMEM;
335
336 rc = iwl_tx_queue_alloc(priv, txq, txq_id);
337 if (rc) {
338 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
339
340 return -ENOMEM;
341 }
342 txq->need_update = 0;
343
344 /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
345 * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
346 BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
347 iwl_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
348
349 iwl_hw_tx_queue_init(priv, txq);
350
351 return 0;
352}
353
354/**
355 * iwl_tx_queue_free - Deallocate DMA queue.
356 * @txq: Transmit queue to deallocate.
357 *
358 * Empty queue by removing and destroying all BD's.
359 * Free all buffers. txq itself is not freed.
360 *
361 */
362void iwl_tx_queue_free(struct iwl_priv *priv, struct iwl_tx_queue *txq)
363{
364 struct iwl_queue *q = &txq->q;
365 struct pci_dev *dev = priv->pci_dev;
366 int len;
367
368 if (q->n_bd == 0)
369 return;
370
371 /* first, empty all BD's */
372 for (; q->first_empty != q->last_used;
373 q->last_used = iwl_queue_inc_wrap(q->last_used, q->n_bd))
374 iwl_hw_txq_free_tfd(priv, txq);
375
376 len = sizeof(struct iwl_cmd) * q->n_window;
377 if (q->id == IWL_CMD_QUEUE_NUM)
378 len += IWL_MAX_SCAN_SIZE;
379
380 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
381
382 /* free buffers belonging to queue itself */
383 if (txq->q.n_bd)
384 pci_free_consistent(dev, sizeof(struct iwl_tfd_frame) *
385 txq->q.n_bd, txq->bd, txq->q.dma_addr);
386
387 if (txq->txb) {
388 kfree(txq->txb);
389 txq->txb = NULL;
390 }
391
392 /* 0 fill whole structure */
393 memset(txq, 0, sizeof(*txq));
394}
395
396const u8 BROADCAST_ADDR[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
397
398/*************** STATION TABLE MANAGEMENT ****
399 *
400 * NOTE: This needs to be overhauled to better synchronize between
401 * how the iwl-4965.c is using iwl_hw_find_station vs. iwl-3945.c
402 *
403 * mac80211 should also be examined to determine if sta_info is duplicating
404 * the functionality provided here
405 */
406
407/**************************************************************/
01ebd063 408#if 0 /* temporary disable till we add real remove station */
b481de9c
ZY		 409static u8 iwl_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
410{
411 int index = IWL_INVALID_STATION;
412 int i;
413 unsigned long flags;
414
415 spin_lock_irqsave(&priv->sta_lock, flags);
416
417 if (is_ap)
418 index = IWL_AP_ID;
419 else if (is_broadcast_ether_addr(addr))
420 index = priv->hw_setting.bcast_sta_id;
421 else
422 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
423 if (priv->stations[i].used &&
424 !compare_ether_addr(priv->stations[i].sta.sta.addr,
425 addr)) {
426 index = i;
427 break;
428 }
429
430 if (unlikely(index == IWL_INVALID_STATION))
431 goto out;
432
433 if (priv->stations[index].used) {
434 priv->stations[index].used = 0;
435 priv->num_stations--;
436 }
437
438 BUG_ON(priv->num_stations < 0);
439
440out:
441 spin_unlock_irqrestore(&priv->sta_lock, flags);
442 return 0;
443}
556f8db7 444#endif
b481de9c
ZY		 445static void iwl_clear_stations_table(struct iwl_priv *priv)
446{
447 unsigned long flags;
448
449 spin_lock_irqsave(&priv->sta_lock, flags);
450
451 priv->num_stations = 0;
452 memset(priv->stations, 0, sizeof(priv->stations));
453
454 spin_unlock_irqrestore(&priv->sta_lock, flags);
455}
456
457
458u8 iwl_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap, u8 flags)
459{
460 int i;
461 int index = IWL_INVALID_STATION;
462 struct iwl_station_entry *station;
463 unsigned long flags_spin;
0795af57 464 DECLARE_MAC_BUF(mac);
c14c521e 465 u8 rate;
b481de9c
ZY		 466
467 spin_lock_irqsave(&priv->sta_lock, flags_spin);
468 if (is_ap)
469 index = IWL_AP_ID;
470 else if (is_broadcast_ether_addr(addr))
471 index = priv->hw_setting.bcast_sta_id;
472 else
473 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
474 if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
475 addr)) {
476 index = i;
477 break;
478 }
479
480 if (!priv->stations[i].used &&
481 index == IWL_INVALID_STATION)
482 index = i;
483 }
484
01ebd063 485 /* These two conditions has the same outcome but keep them separate
b481de9c
ZY		 486 since they have different meaning */
487 if (unlikely(index == IWL_INVALID_STATION)) {
488 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
489 return index;
490 }
491
492 if (priv->stations[index].used &&
493 !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
494 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
495 return index;
496 }
497
0795af57 498 IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
b481de9c
ZY		 499 station = &priv->stations[index];
500 station->used = 1;
501 priv->num_stations++;
502
503 memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd));
504 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
505 station->sta.mode = 0;
506 station->sta.sta.sta_id = index;
507 station->sta.station_flags = 0;
508
c14c521e
ZY		 509 rate = (priv->phymode == MODE_IEEE80211A) ? IWL_RATE_6M_PLCP :
510 IWL_RATE_1M_PLCP | priv->hw_setting.cck_flag;
511
512 /* Turn on both antennas for the station... */
513 station->sta.rate_n_flags =
514 iwl_hw_set_rate_n_flags(rate, RATE_MCS_ANT_AB_MSK);
515 station->current_rate.rate_n_flags =
516 le16_to_cpu(station->sta.rate_n_flags);
517
b481de9c
ZY		 518 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
519 iwl_send_add_station(priv, &station->sta, flags);
520 return index;
521
522}
523
524/*************** DRIVER STATUS FUNCTIONS *****/
525
526static inline int iwl_is_ready(struct iwl_priv *priv)
527{
528 /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
529 * set but EXIT_PENDING is not */
530 return test_bit(STATUS_READY, &priv->status) &&
531 test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
532 !test_bit(STATUS_EXIT_PENDING, &priv->status);
533}
534
535static inline int iwl_is_alive(struct iwl_priv *priv)
536{
537 return test_bit(STATUS_ALIVE, &priv->status);
538}
539
540static inline int iwl_is_init(struct iwl_priv *priv)
541{
542 return test_bit(STATUS_INIT, &priv->status);
543}
544
545static inline int iwl_is_rfkill(struct iwl_priv *priv)
546{
547 return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
548 test_bit(STATUS_RF_KILL_SW, &priv->status);
549}
550
551static inline int iwl_is_ready_rf(struct iwl_priv *priv)
552{
553
554 if (iwl_is_rfkill(priv))
555 return 0;
556
557 return iwl_is_ready(priv);
558}
559
560/*************** HOST COMMAND QUEUE FUNCTIONS *****/
561
562#define IWL_CMD(x) case x : return #x
563
564static const char *get_cmd_string(u8 cmd)
565{
566 switch (cmd) {
567 IWL_CMD(REPLY_ALIVE);
568 IWL_CMD(REPLY_ERROR);
569 IWL_CMD(REPLY_RXON);
570 IWL_CMD(REPLY_RXON_ASSOC);
571 IWL_CMD(REPLY_QOS_PARAM);
572 IWL_CMD(REPLY_RXON_TIMING);
573 IWL_CMD(REPLY_ADD_STA);
574 IWL_CMD(REPLY_REMOVE_STA);
575 IWL_CMD(REPLY_REMOVE_ALL_STA);
576 IWL_CMD(REPLY_3945_RX);
577 IWL_CMD(REPLY_TX);
578 IWL_CMD(REPLY_RATE_SCALE);
579 IWL_CMD(REPLY_LEDS_CMD);
580 IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
581 IWL_CMD(RADAR_NOTIFICATION);
582 IWL_CMD(REPLY_QUIET_CMD);
583 IWL_CMD(REPLY_CHANNEL_SWITCH);
584 IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
585 IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
586 IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
587 IWL_CMD(POWER_TABLE_CMD);
588 IWL_CMD(PM_SLEEP_NOTIFICATION);
589 IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
590 IWL_CMD(REPLY_SCAN_CMD);
591 IWL_CMD(REPLY_SCAN_ABORT_CMD);
592 IWL_CMD(SCAN_START_NOTIFICATION);
593 IWL_CMD(SCAN_RESULTS_NOTIFICATION);
594 IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
595 IWL_CMD(BEACON_NOTIFICATION);
596 IWL_CMD(REPLY_TX_BEACON);
597 IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
598 IWL_CMD(QUIET_NOTIFICATION);
599 IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
600 IWL_CMD(MEASURE_ABORT_NOTIFICATION);
601 IWL_CMD(REPLY_BT_CONFIG);
602 IWL_CMD(REPLY_STATISTICS_CMD);
603 IWL_CMD(STATISTICS_NOTIFICATION);
604 IWL_CMD(REPLY_CARD_STATE_CMD);
605 IWL_CMD(CARD_STATE_NOTIFICATION);
606 IWL_CMD(MISSED_BEACONS_NOTIFICATION);
607 default:
608 return "UNKNOWN";
609
610 }
611}
612
613#define HOST_COMPLETE_TIMEOUT (HZ / 2)
614
615/**
616 * iwl_enqueue_hcmd - enqueue a uCode command
617 * @priv: device private data point
618 * @cmd: a point to the ucode command structure
619 *
620 * The function returns < 0 values to indicate the operation is
621 * failed. On success, it turns the index (> 0) of command in the
622 * command queue.
623 */
624static int iwl_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
625{
626 struct iwl_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
627 struct iwl_queue *q = &txq->q;
628 struct iwl_tfd_frame *tfd;
629 u32 *control_flags;
630 struct iwl_cmd *out_cmd;
631 u32 idx;
632 u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
633 dma_addr_t phys_addr;
634 int pad;
635 u16 count;
636 int ret;
637 unsigned long flags;
638
639 /* If any of the command structures end up being larger than
640 * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
641 * we will need to increase the size of the TFD entries */
642 BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
643 !(cmd->meta.flags & CMD_SIZE_HUGE));
644
645 if (iwl_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
646 IWL_ERROR("No space for Tx\n");
647 return -ENOSPC;
648 }
649
650 spin_lock_irqsave(&priv->hcmd_lock, flags);
651
652 tfd = &txq->bd[q->first_empty];
653 memset(tfd, 0, sizeof(*tfd));
654
655 control_flags = (u32 *) tfd;
656
657 idx = get_cmd_index(q, q->first_empty, cmd->meta.flags & CMD_SIZE_HUGE);
658 out_cmd = &txq->cmd[idx];
659
660 out_cmd->hdr.cmd = cmd->id;
661 memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
662 memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
663
664 /* At this point, the out_cmd now has all of the incoming cmd
665 * information */
666
667 out_cmd->hdr.flags = 0;
668 out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
669 INDEX_TO_SEQ(q->first_empty));
670 if (out_cmd->meta.flags & CMD_SIZE_HUGE)
671 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
672
673 phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
674 offsetof(struct iwl_cmd, hdr);
675 iwl_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
676
677 pad = U32_PAD(cmd->len);
678 count = TFD_CTL_COUNT_GET(*control_flags);
679 *control_flags = TFD_CTL_COUNT_SET(count) | TFD_CTL_PAD_SET(pad);
680
681 IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
682 "%d bytes at %d[%d]:%d\n",
683 get_cmd_string(out_cmd->hdr.cmd),
684 out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
685 fix_size, q->first_empty, idx, IWL_CMD_QUEUE_NUM);
686
687 txq->need_update = 1;
688 q->first_empty = iwl_queue_inc_wrap(q->first_empty, q->n_bd);
689 ret = iwl_tx_queue_update_write_ptr(priv, txq);
690
691 spin_unlock_irqrestore(&priv->hcmd_lock, flags);
692 return ret ? ret : idx;
693}
694
695int iwl_send_cmd_async(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
696{
697 int ret;
698
699 BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
700
701 /* An asynchronous command can not expect an SKB to be set. */
702 BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
703
704 /* An asynchronous command MUST have a callback. */
705 BUG_ON(!cmd->meta.u.callback);
706
707 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
708 return -EBUSY;
709
710 ret = iwl_enqueue_hcmd(priv, cmd);
711 if (ret < 0) {
712 IWL_ERROR("Error sending %s: iwl_enqueue_hcmd failed: %d\n",
713 get_cmd_string(cmd->id), ret);
714 return ret;
715 }
716 return 0;
717}
718
719int iwl_send_cmd_sync(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
720{
721 int cmd_idx;
722 int ret;
723 static atomic_t entry = ATOMIC_INIT(0); /* reentrance protection */
724
725 BUG_ON(cmd->meta.flags & CMD_ASYNC);
726
727 /* A synchronous command can not have a callback set. */
728 BUG_ON(cmd->meta.u.callback != NULL);
729
730 if (atomic_xchg(&entry, 1)) {
731 IWL_ERROR("Error sending %s: Already sending a host command\n",
732 get_cmd_string(cmd->id));
733 return -EBUSY;
734 }
735
736 set_bit(STATUS_HCMD_ACTIVE, &priv->status);
737
738 if (cmd->meta.flags & CMD_WANT_SKB)
739 cmd->meta.source = &cmd->meta;
740
741 cmd_idx = iwl_enqueue_hcmd(priv, cmd);
742 if (cmd_idx < 0) {
743 ret = cmd_idx;
744 IWL_ERROR("Error sending %s: iwl_enqueue_hcmd failed: %d\n",
745 get_cmd_string(cmd->id), ret);
746 goto out;
747 }
748
749 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
750 !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
751 HOST_COMPLETE_TIMEOUT);
752 if (!ret) {
753 if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
754 IWL_ERROR("Error sending %s: time out after %dms.\n",
755 get_cmd_string(cmd->id),
756 jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
757
758 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
759 ret = -ETIMEDOUT;
760 goto cancel;
761 }
762 }
763
764 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
765 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
766 get_cmd_string(cmd->id));
767 ret = -ECANCELED;
768 goto fail;
769 }
770 if (test_bit(STATUS_FW_ERROR, &priv->status)) {
771 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
772 get_cmd_string(cmd->id));
773 ret = -EIO;
774 goto fail;
775 }
776 if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
777 IWL_ERROR("Error: Response NULL in '%s'\n",
778 get_cmd_string(cmd->id));
779 ret = -EIO;
780 goto out;
781 }
782
783 ret = 0;
784 goto out;
785
786cancel:
787 if (cmd->meta.flags & CMD_WANT_SKB) {
788 struct iwl_cmd *qcmd;
789
790 /* Cancel the CMD_WANT_SKB flag for the cmd in the
791 * TX cmd queue. Otherwise in case the cmd comes
792 * in later, it will possibly set an invalid
793 * address (cmd->meta.source). */
794 qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
795 qcmd->meta.flags &= ~CMD_WANT_SKB;
796 }
797fail:
798 if (cmd->meta.u.skb) {
799 dev_kfree_skb_any(cmd->meta.u.skb);
800 cmd->meta.u.skb = NULL;
801 }
802out:
803 atomic_set(&entry, 0);
804 return ret;
805}
806
807int iwl_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
808{
809 /* A command can not be asynchronous AND expect an SKB to be set. */
810 BUG_ON((cmd->meta.flags & CMD_ASYNC) &&
811 (cmd->meta.flags & CMD_WANT_SKB));
812
813 if (cmd->meta.flags & CMD_ASYNC)
814 return iwl_send_cmd_async(priv, cmd);
815
816 return iwl_send_cmd_sync(priv, cmd);
817}
818
819int iwl_send_cmd_pdu(struct iwl_priv *priv, u8 id, u16 len, const void *data)
820{
821 struct iwl_host_cmd cmd = {
822 .id = id,
823 .len = len,
824 .data = data,
825 };
826
827 return iwl_send_cmd_sync(priv, &cmd);
828}
829
830static int __must_check iwl_send_cmd_u32(struct iwl_priv *priv, u8 id, u32 val)
831{
832 struct iwl_host_cmd cmd = {
833 .id = id,
834 .len = sizeof(val),
835 .data = &val,
836 };
837
838 return iwl_send_cmd_sync(priv, &cmd);
839}
840
841int iwl_send_statistics_request(struct iwl_priv *priv)
842{
843 return iwl_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
844}
845
b481de9c
ZY		 846/**
847 * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
848 * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
849 * @channel: Any channel valid for the requested phymode
850
851 * In addition to setting the staging RXON, priv->phymode is also set.
852 *
853 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
854 * in the staging RXON flag structure based on the phymode
855 */
856static int iwl_set_rxon_channel(struct iwl_priv *priv, u8 phymode, u16 channel)
857{
858 if (!iwl_get_channel_info(priv, phymode, channel)) {
859 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
860 channel, phymode);
861 return -EINVAL;
862 }
863
864 if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
865 (priv->phymode == phymode))
866 return 0;
867
868 priv->staging_rxon.channel = cpu_to_le16(channel);
869 if (phymode == MODE_IEEE80211A)
870 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
871 else
872 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
873
874 priv->phymode = phymode;
875
876 IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, phymode);
877
878 return 0;
879}
880
881/**
882 * iwl_check_rxon_cmd - validate RXON structure is valid
883 *
884 * NOTE: This is really only useful during development and can eventually
885 * be #ifdef'd out once the driver is stable and folks aren't actively
886 * making changes
887 */
888static int iwl_check_rxon_cmd(struct iwl_rxon_cmd *rxon)
889{
890 int error = 0;
891 int counter = 1;
892
893 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
894 error |= le32_to_cpu(rxon->flags &
895 (RXON_FLG_TGJ_NARROW_BAND_MSK |
896 RXON_FLG_RADAR_DETECT_MSK));
897 if (error)
898 IWL_WARNING("check 24G fields %d | %d\n",
899 counter++, error);
900 } else {
901 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
902 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
903 if (error)
904 IWL_WARNING("check 52 fields %d | %d\n",
905 counter++, error);
906 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
907 if (error)
908 IWL_WARNING("check 52 CCK %d | %d\n",
909 counter++, error);
910 }
911 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
912 if (error)
913 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
914
915 /* make sure basic rates 6Mbps and 1Mbps are supported */
916 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
917 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
918 if (error)
919 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
920
921 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
922 if (error)
923 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
924
925 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
926 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
927 if (error)
928 IWL_WARNING("check CCK and short slot %d | %d\n",
929 counter++, error);
930
931 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
932 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
933 if (error)
934 IWL_WARNING("check CCK & auto detect %d | %d\n",
935 counter++, error);
936
937 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
938 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
939 if (error)
940 IWL_WARNING("check TGG and auto detect %d | %d\n",
941 counter++, error);
942
943 if ((rxon->flags & RXON_FLG_DIS_DIV_MSK))
944 error |= ((rxon->flags & (RXON_FLG_ANT_B_MSK |
945 RXON_FLG_ANT_A_MSK)) == 0);
946 if (error)
947 IWL_WARNING("check antenna %d %d\n", counter++, error);
948
949 if (error)
950 IWL_WARNING("Tuning to channel %d\n",
951 le16_to_cpu(rxon->channel));
952
953 if (error) {
954 IWL_ERROR("Not a valid iwl_rxon_assoc_cmd field values\n");
955 return -1;
956 }
957 return 0;
958}
959
960/**
961 * iwl_full_rxon_required - determine if RXON_ASSOC can be used in RXON commit
01ebd063 962 * @priv: staging_rxon is compared to active_rxon
b481de9c
ZY		 963 *
964 * If the RXON structure is changing sufficient to require a new
965 * tune or to clear and reset the RXON_FILTER_ASSOC_MSK then return 1
966 * to indicate a new tune is required.
967 */
968static int iwl_full_rxon_required(struct iwl_priv *priv)
969{
970
971 /* These items are only settable from the full RXON command */
972 if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
973 compare_ether_addr(priv->staging_rxon.bssid_addr,
974 priv->active_rxon.bssid_addr) ||
975 compare_ether_addr(priv->staging_rxon.node_addr,
976 priv->active_rxon.node_addr) ||
977 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
978 priv->active_rxon.wlap_bssid_addr) ||
979 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
980 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
981 (priv->staging_rxon.air_propagation !=
982 priv->active_rxon.air_propagation) ||
983 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
984 return 1;
985
986 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
987 * be updated with the RXON_ASSOC command -- however only some
988 * flag transitions are allowed using RXON_ASSOC */
989
990 /* Check if we are not switching bands */
991 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
992 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
993 return 1;
994
995 /* Check if we are switching association toggle */
996 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
997 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
998 return 1;
999
1000 return 0;
1001}
1002
1003static int iwl_send_rxon_assoc(struct iwl_priv *priv)
1004{
1005 int rc = 0;
1006 struct iwl_rx_packet *res = NULL;
1007 struct iwl_rxon_assoc_cmd rxon_assoc;
1008 struct iwl_host_cmd cmd = {
1009 .id = REPLY_RXON_ASSOC,
1010 .len = sizeof(rxon_assoc),
1011 .meta.flags = CMD_WANT_SKB,
1012 .data = &rxon_assoc,
1013 };
1014 const struct iwl_rxon_cmd *rxon1 = &priv->staging_rxon;
1015 const struct iwl_rxon_cmd *rxon2 = &priv->active_rxon;
1016
1017 if ((rxon1->flags == rxon2->flags) &&
1018 (rxon1->filter_flags == rxon2->filter_flags) &&
1019 (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1020 (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1021 IWL_DEBUG_INFO("Using current RXON_ASSOC. Not resending.\n");
1022 return 0;
1023 }
1024
1025 rxon_assoc.flags = priv->staging_rxon.flags;
1026 rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1027 rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1028 rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1029 rxon_assoc.reserved = 0;
1030
1031 rc = iwl_send_cmd_sync(priv, &cmd);
1032 if (rc)
1033 return rc;
1034
1035 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1036 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1037 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1038 rc = -EIO;
1039 }
1040
1041 priv->alloc_rxb_skb--;
1042 dev_kfree_skb_any(cmd.meta.u.skb);
1043
1044 return rc;
1045}
1046
1047/**
1048 * iwl_commit_rxon - commit staging_rxon to hardware
1049 *
01ebd063 1050 * The RXON command in staging_rxon is committed to the hardware and
b481de9c
ZY		 1051 * the active_rxon structure is updated with the new data. This
1052 * function correctly transitions out of the RXON_ASSOC_MSK state if
1053 * a HW tune is required based on the RXON structure changes.
1054 */
1055static int iwl_commit_rxon(struct iwl_priv *priv)
1056{
1057 /* cast away the const for active_rxon in this function */
1058 struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
1059 int rc = 0;
0795af57 1060 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 1061
1062 if (!iwl_is_alive(priv))
1063 return -1;
1064
1065 /* always get timestamp with Rx frame */
1066 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
1067
1068 /* select antenna */
1069 priv->staging_rxon.flags &=
1070 ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK);
1071 priv->staging_rxon.flags |= iwl3945_get_antenna_flags(priv);
1072
1073 rc = iwl_check_rxon_cmd(&priv->staging_rxon);
1074 if (rc) {
1075 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
1076 return -EINVAL;
1077 }
1078
1079 /* If we don't need to send a full RXON, we can use
1080 * iwl_rxon_assoc_cmd which is used to reconfigure filter
1081 * and other flags for the current radio configuration. */
1082 if (!iwl_full_rxon_required(priv)) {
1083 rc = iwl_send_rxon_assoc(priv);
1084 if (rc) {
1085 IWL_ERROR("Error setting RXON_ASSOC "
1086 "configuration (%d).\n", rc);
1087 return rc;
1088 }
1089
1090 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1091
1092 return 0;
1093 }
1094
1095 /* If we are currently associated and the new config requires
1096 * an RXON_ASSOC and the new config wants the associated mask enabled,
1097 * we must clear the associated from the active configuration
1098 * before we apply the new config */
1099 if (iwl_is_associated(priv) &&
1100 (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
1101 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1102 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1103
1104 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
1105 sizeof(struct iwl_rxon_cmd),
1106 &priv->active_rxon);
1107
1108 /* If the mask clearing failed then we set
1109 * active_rxon back to what it was previously */
1110 if (rc) {
1111 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1112 IWL_ERROR("Error clearing ASSOC_MSK on current "
1113 "configuration (%d).\n", rc);
1114 return rc;
1115 }
b481de9c
ZY		 1116 }
1117
1118 IWL_DEBUG_INFO("Sending RXON\n"
1119 "* with%s RXON_FILTER_ASSOC_MSK\n"
1120 "* channel = %d\n"
0795af57 1121 "* bssid = %s\n",
b481de9c
ZY		 1122 ((priv->staging_rxon.filter_flags &
1123 RXON_FILTER_ASSOC_MSK) ? "" : "out"),
1124 le16_to_cpu(priv->staging_rxon.channel),
0795af57 1125 print_mac(mac, priv->staging_rxon.bssid_addr));
b481de9c
ZY		 1126
1127 /* Apply the new configuration */
1128 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
1129 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
1130 if (rc) {
1131 IWL_ERROR("Error setting new configuration (%d).\n", rc);
1132 return rc;
1133 }
1134
1135 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1136
556f8db7
ZY		 1137 iwl_clear_stations_table(priv);
1138
b481de9c
ZY		 1139 /* If we issue a new RXON command which required a tune then we must
1140 * send a new TXPOWER command or we won't be able to Tx any frames */
1141 rc = iwl_hw_reg_send_txpower(priv);
1142 if (rc) {
1143 IWL_ERROR("Error setting Tx power (%d).\n", rc);
1144 return rc;
1145 }
1146
1147 /* Add the broadcast address so we can send broadcast frames */
556f8db7 1148 if (iwl_add_station(priv, BROADCAST_ADDR, 0, 0) ==
b481de9c
ZY		 1149 IWL_INVALID_STATION) {
1150 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1151 return -EIO;
1152 }
1153
1154 /* If we have set the ASSOC_MSK and we are in BSS mode then
1155 * add the IWL_AP_ID to the station rate table */
1156 if (iwl_is_associated(priv) &&
1157 (priv->iw_mode == IEEE80211_IF_TYPE_STA))
556f8db7 1158 if (iwl_add_station(priv, priv->active_rxon.bssid_addr, 1, 0)
b481de9c
ZY		 1159 == IWL_INVALID_STATION) {
1160 IWL_ERROR("Error adding AP address for transmit.\n");
1161 return -EIO;
1162 }
1163
1164 /* Init the hardware's rate fallback order based on the
1165 * phymode */
1166 rc = iwl3945_init_hw_rate_table(priv);
1167 if (rc) {
1168 IWL_ERROR("Error setting HW rate table: %02X\n", rc);
1169 return -EIO;
1170 }
1171
1172 return 0;
1173}
1174
1175static int iwl_send_bt_config(struct iwl_priv *priv)
1176{
1177 struct iwl_bt_cmd bt_cmd = {
1178 .flags = 3,
1179 .lead_time = 0xAA,
1180 .max_kill = 1,
1181 .kill_ack_mask = 0,
1182 .kill_cts_mask = 0,
1183 };
1184
1185 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1186 sizeof(struct iwl_bt_cmd), &bt_cmd);
1187}
1188
1189static int iwl_send_scan_abort(struct iwl_priv *priv)
1190{
1191 int rc = 0;
1192 struct iwl_rx_packet *res;
1193 struct iwl_host_cmd cmd = {
1194 .id = REPLY_SCAN_ABORT_CMD,
1195 .meta.flags = CMD_WANT_SKB,
1196 };
1197
1198 /* If there isn't a scan actively going on in the hardware
1199 * then we are in between scan bands and not actually
1200 * actively scanning, so don't send the abort command */
1201 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1202 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1203 return 0;
1204 }
1205
1206 rc = iwl_send_cmd_sync(priv, &cmd);
1207 if (rc) {
1208 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1209 return rc;
1210 }
1211
1212 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1213 if (res->u.status != CAN_ABORT_STATUS) {
1214 /* The scan abort will return 1 for success or
1215 * 2 for "failure". A failure condition can be
1216 * due to simply not being in an active scan which
1217 * can occur if we send the scan abort before we
1218 * the microcode has notified us that a scan is
1219 * completed. */
1220 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1221 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1222 clear_bit(STATUS_SCAN_HW, &priv->status);
1223 }
1224
1225 dev_kfree_skb_any(cmd.meta.u.skb);
1226
1227 return rc;
1228}
1229
1230static int iwl_card_state_sync_callback(struct iwl_priv *priv,
1231 struct iwl_cmd *cmd,
1232 struct sk_buff *skb)
1233{
1234 return 1;
1235}
1236
1237/*
1238 * CARD_STATE_CMD
1239 *
1240 * Use: Sets the internal card state to enable, disable, or halt
1241 *
1242 * When in the 'enable' state the card operates as normal.
1243 * When in the 'disable' state, the card enters into a low power mode.
1244 * When in the 'halt' state, the card is shut down and must be fully
1245 * restarted to come back on.
1246 */
1247static int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
1248{
1249 struct iwl_host_cmd cmd = {
1250 .id = REPLY_CARD_STATE_CMD,
1251 .len = sizeof(u32),
1252 .data = &flags,
1253 .meta.flags = meta_flag,
1254 };
1255
1256 if (meta_flag & CMD_ASYNC)
1257 cmd.meta.u.callback = iwl_card_state_sync_callback;
1258
1259 return iwl_send_cmd(priv, &cmd);
1260}
1261
1262static int iwl_add_sta_sync_callback(struct iwl_priv *priv,
1263 struct iwl_cmd *cmd, struct sk_buff *skb)
1264{
1265 struct iwl_rx_packet *res = NULL;
1266
1267 if (!skb) {
1268 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1269 return 1;
1270 }
1271
1272 res = (struct iwl_rx_packet *)skb->data;
1273 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1274 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1275 res->hdr.flags);
1276 return 1;
1277 }
1278
1279 switch (res->u.add_sta.status) {
1280 case ADD_STA_SUCCESS_MSK:
1281 break;
1282 default:
1283 break;
1284 }
1285
1286 /* We didn't cache the SKB; let the caller free it */
1287 return 1;
1288}
1289
1290int iwl_send_add_station(struct iwl_priv *priv,
1291 struct iwl_addsta_cmd *sta, u8 flags)
1292{
1293 struct iwl_rx_packet *res = NULL;
1294 int rc = 0;
1295 struct iwl_host_cmd cmd = {
1296 .id = REPLY_ADD_STA,
1297 .len = sizeof(struct iwl_addsta_cmd),
1298 .meta.flags = flags,
1299 .data = sta,
1300 };
1301
1302 if (flags & CMD_ASYNC)
1303 cmd.meta.u.callback = iwl_add_sta_sync_callback;
1304 else
1305 cmd.meta.flags |= CMD_WANT_SKB;
1306
1307 rc = iwl_send_cmd(priv, &cmd);
1308
1309 if (rc || (flags & CMD_ASYNC))
1310 return rc;
1311
1312 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1313 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1314 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1315 res->hdr.flags);
1316 rc = -EIO;
1317 }
1318
1319 if (rc == 0) {
1320 switch (res->u.add_sta.status) {
1321 case ADD_STA_SUCCESS_MSK:
1322 IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1323 break;
1324 default:
1325 rc = -EIO;
1326 IWL_WARNING("REPLY_ADD_STA failed\n");
1327 break;
1328 }
1329 }
1330
1331 priv->alloc_rxb_skb--;
1332 dev_kfree_skb_any(cmd.meta.u.skb);
1333
1334 return rc;
1335}
1336
1337static int iwl_update_sta_key_info(struct iwl_priv *priv,
1338 struct ieee80211_key_conf *keyconf,
1339 u8 sta_id)
1340{
1341 unsigned long flags;
1342 __le16 key_flags = 0;
1343
1344 switch (keyconf->alg) {
1345 case ALG_CCMP:
1346 key_flags |= STA_KEY_FLG_CCMP;
1347 key_flags |= cpu_to_le16(
1348 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1349 key_flags &= ~STA_KEY_FLG_INVALID;
1350 break;
1351 case ALG_TKIP:
1352 case ALG_WEP:
1353 return -EINVAL;
1354 default:
1355 return -EINVAL;
1356 }
1357 spin_lock_irqsave(&priv->sta_lock, flags);
1358 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1359 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1360 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1361 keyconf->keylen);
1362
1363 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1364 keyconf->keylen);
1365 priv->stations[sta_id].sta.key.key_flags = key_flags;
1366 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1367 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1368
1369 spin_unlock_irqrestore(&priv->sta_lock, flags);
1370
1371 IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1372 iwl_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1373 return 0;
1374}
1375
1376static int iwl_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
1377{
1378 unsigned long flags;
1379
1380 spin_lock_irqsave(&priv->sta_lock, flags);
1381 memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl_hw_key));
1382 memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl_keyinfo));
1383 priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1384 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1385 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1386 spin_unlock_irqrestore(&priv->sta_lock, flags);
1387
1388 IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1389 iwl_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1390 return 0;
1391}
1392
1393static void iwl_clear_free_frames(struct iwl_priv *priv)
1394{
1395 struct list_head *element;
1396
1397 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1398 priv->frames_count);
1399
1400 while (!list_empty(&priv->free_frames)) {
1401 element = priv->free_frames.next;
1402 list_del(element);
1403 kfree(list_entry(element, struct iwl_frame, list));
1404 priv->frames_count--;
1405 }
1406
1407 if (priv->frames_count) {
1408 IWL_WARNING("%d frames still in use. Did we lose one?\n",
1409 priv->frames_count);
1410 priv->frames_count = 0;
1411 }
1412}
1413
1414static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
1415{
1416 struct iwl_frame *frame;
1417 struct list_head *element;
1418 if (list_empty(&priv->free_frames)) {
1419 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1420 if (!frame) {
1421 IWL_ERROR("Could not allocate frame!\n");
1422 return NULL;
1423 }
1424
1425 priv->frames_count++;
1426 return frame;
1427 }
1428
1429 element = priv->free_frames.next;
1430 list_del(element);
1431 return list_entry(element, struct iwl_frame, list);
1432}
1433
1434static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
1435{
1436 memset(frame, 0, sizeof(*frame));
1437 list_add(&frame->list, &priv->free_frames);
1438}
1439
1440unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
1441 struct ieee80211_hdr *hdr,
1442 const u8 *dest, int left)
1443{
1444
1445 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
1446 ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1447 (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1448 return 0;
1449
1450 if (priv->ibss_beacon->len > left)
1451 return 0;
1452
1453 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1454
1455 return priv->ibss_beacon->len;
1456}
1457
1458static int iwl_rate_index_from_plcp(int plcp)
1459{
1460 int i = 0;
1461
1462 for (i = 0; i < IWL_RATE_COUNT; i++)
1463 if (iwl_rates[i].plcp == plcp)
1464 return i;
1465 return -1;
1466}
1467
1468static u8 iwl_rate_get_lowest_plcp(int rate_mask)
1469{
1470 u8 i;
1471
1472 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1473 i = iwl_rates[i].next_ieee) {
1474 if (rate_mask & (1 << i))
1475 return iwl_rates[i].plcp;
1476 }
1477
1478 return IWL_RATE_INVALID;
1479}
1480
1481static int iwl_send_beacon_cmd(struct iwl_priv *priv)
1482{
1483 struct iwl_frame *frame;
1484 unsigned int frame_size;
1485 int rc;
1486 u8 rate;
1487
1488 frame = iwl_get_free_frame(priv);
1489
1490 if (!frame) {
1491 IWL_ERROR("Could not obtain free frame buffer for beacon "
1492 "command.\n");
1493 return -ENOMEM;
1494 }
1495
1496 if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1497 rate = iwl_rate_get_lowest_plcp(priv->active_rate_basic &
1498 0xFF0);
1499 if (rate == IWL_INVALID_RATE)
1500 rate = IWL_RATE_6M_PLCP;
1501 } else {
1502 rate = iwl_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1503 if (rate == IWL_INVALID_RATE)
1504 rate = IWL_RATE_1M_PLCP;
1505 }
1506
1507 frame_size = iwl_hw_get_beacon_cmd(priv, frame, rate);
1508
1509 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1510 &frame->u.cmd[0]);
1511
1512 iwl_free_frame(priv, frame);
1513
1514 return rc;
1515}
1516
1517/******************************************************************************
1518 *
1519 * EEPROM related functions
1520 *
1521 ******************************************************************************/
1522
1523static void get_eeprom_mac(struct iwl_priv *priv, u8 *mac)
1524{
1525 memcpy(mac, priv->eeprom.mac_address, 6);
1526}
1527
1528/**
1529 * iwl_eeprom_init - read EEPROM contents
1530 *
1531 * Load the EEPROM from adapter into priv->eeprom
1532 *
1533 * NOTE: This routine uses the non-debug IO access functions.
1534 */
1535int iwl_eeprom_init(struct iwl_priv *priv)
1536{
1537 u16 *e = (u16 *)&priv->eeprom;
1538 u32 gp = iwl_read32(priv, CSR_EEPROM_GP);
1539 u32 r;
1540 int sz = sizeof(priv->eeprom);
1541 int rc;
1542 int i;
1543 u16 addr;
1544
1545 /* The EEPROM structure has several padding buffers within it
1546 * and when adding new EEPROM maps is subject to programmer errors
1547 * which may be very difficult to identify without explicitly
1548 * checking the resulting size of the eeprom map. */
1549 BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);
1550
1551 if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1552 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp);
1553 return -ENOENT;
1554 }
1555
91e17473 1556 rc = iwl_eeprom_acquire_semaphore(priv);
b481de9c 1557 if (rc < 0) {
91e17473 1558 IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
b481de9c
ZY		 1559 return -ENOENT;
1560 }
1561
1562 /* eeprom is an array of 16bit values */
1563 for (addr = 0; addr < sz; addr += sizeof(u16)) {
1564 _iwl_write32(priv, CSR_EEPROM_REG, addr << 1);
1565 _iwl_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1566
1567 for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT;
1568 i += IWL_EEPROM_ACCESS_DELAY) {
1569 r = _iwl_read_restricted(priv, CSR_EEPROM_REG);
1570 if (r & CSR_EEPROM_REG_READ_VALID_MSK)
1571 break;
1572 udelay(IWL_EEPROM_ACCESS_DELAY);
1573 }
1574
1575 if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) {
1576 IWL_ERROR("Time out reading EEPROM[%d]", addr);
1577 return -ETIMEDOUT;
1578 }
1579 e[addr / 2] = le16_to_cpu(r >> 16);
1580 }
1581
1582 return 0;
1583}
1584
1585/******************************************************************************
1586 *
1587 * Misc. internal state and helper functions
1588 *
1589 ******************************************************************************/
1590#ifdef CONFIG_IWLWIFI_DEBUG
1591
1592/**
1593 * iwl_report_frame - dump frame to syslog during debug sessions
1594 *
1595 * hack this function to show different aspects of received frames,
1596 * including selective frame dumps.
1597 * group100 parameter selects whether to show 1 out of 100 good frames.
1598 *
1599 * TODO: ieee80211_hdr stuff is common to 3945 and 4965, so frame type
1600 * info output is okay, but some of this stuff (e.g. iwl_rx_frame_stats)
1601 * is 3945-specific and gives bad output for 4965. Need to split the
1602 * functionality, keep common stuff here.
1603 */
1604void iwl_report_frame(struct iwl_priv *priv,
1605 struct iwl_rx_packet *pkt,
1606 struct ieee80211_hdr *header, int group100)
1607{
1608 u32 to_us;
1609 u32 print_summary = 0;
1610 u32 print_dump = 0; /* set to 1 to dump all frames' contents */
1611 u32 hundred = 0;
1612 u32 dataframe = 0;
1613 u16 fc;
1614 u16 seq_ctl;
1615 u16 channel;
1616 u16 phy_flags;
1617 int rate_sym;
1618 u16 length;
1619 u16 status;
1620 u16 bcn_tmr;
1621 u32 tsf_low;
1622 u64 tsf;
1623 u8 rssi;
1624 u8 agc;
1625 u16 sig_avg;
1626 u16 noise_diff;
1627 struct iwl_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
1628 struct iwl_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
1629 struct iwl_rx_frame_end *rx_end = IWL_RX_END(pkt);
1630 u8 *data = IWL_RX_DATA(pkt);
1631
1632 /* MAC header */
1633 fc = le16_to_cpu(header->frame_control);
1634 seq_ctl = le16_to_cpu(header->seq_ctrl);
1635
1636 /* metadata */
1637 channel = le16_to_cpu(rx_hdr->channel);
1638 phy_flags = le16_to_cpu(rx_hdr->phy_flags);
1639 rate_sym = rx_hdr->rate;
1640 length = le16_to_cpu(rx_hdr->len);
1641
1642 /* end-of-frame status and timestamp */
1643 status = le32_to_cpu(rx_end->status);
1644 bcn_tmr = le32_to_cpu(rx_end->beacon_timestamp);
1645 tsf_low = le64_to_cpu(rx_end->timestamp) & 0x0ffffffff;
1646 tsf = le64_to_cpu(rx_end->timestamp);
1647
1648 /* signal statistics */
1649 rssi = rx_stats->rssi;
1650 agc = rx_stats->agc;
1651 sig_avg = le16_to_cpu(rx_stats->sig_avg);
1652 noise_diff = le16_to_cpu(rx_stats->noise_diff);
1653
1654 to_us = !compare_ether_addr(header->addr1, priv->mac_addr);
1655
1656 /* if data frame is to us and all is good,
1657 * (optionally) print summary for only 1 out of every 100 */
1658 if (to_us && (fc & ~IEEE80211_FCTL_PROTECTED) ==
1659 (IEEE80211_FCTL_FROMDS | IEEE80211_FTYPE_DATA)) {
1660 dataframe = 1;
1661 if (!group100)
1662 print_summary = 1; /* print each frame */
1663 else if (priv->framecnt_to_us < 100) {
1664 priv->framecnt_to_us++;
1665 print_summary = 0;
1666 } else {
1667 priv->framecnt_to_us = 0;
1668 print_summary = 1;
1669 hundred = 1;
1670 }
1671 } else {
1672 /* print summary for all other frames */
1673 print_summary = 1;
1674 }
1675
1676 if (print_summary) {
1677 char *title;
1678 u32 rate;
1679
1680 if (hundred)
1681 title = "100Frames";
1682 else if (fc & IEEE80211_FCTL_RETRY)
1683 title = "Retry";
1684 else if (ieee80211_is_assoc_response(fc))
1685 title = "AscRsp";
1686 else if (ieee80211_is_reassoc_response(fc))
1687 title = "RasRsp";
1688 else if (ieee80211_is_probe_response(fc)) {
1689 title = "PrbRsp";
1690 print_dump = 1; /* dump frame contents */
1691 } else if (ieee80211_is_beacon(fc)) {
1692 title = "Beacon";
1693 print_dump = 1; /* dump frame contents */
1694 } else if (ieee80211_is_atim(fc))
1695 title = "ATIM";
1696 else if (ieee80211_is_auth(fc))
1697 title = "Auth";
1698 else if (ieee80211_is_deauth(fc))
1699 title = "DeAuth";
1700 else if (ieee80211_is_disassoc(fc))
1701 title = "DisAssoc";
1702 else
1703 title = "Frame";
1704
1705 rate = iwl_rate_index_from_plcp(rate_sym);
1706 if (rate == -1)
1707 rate = 0;
1708 else
1709 rate = iwl_rates[rate].ieee / 2;
1710
1711 /* print frame summary.
1712 * MAC addresses show just the last byte (for brevity),
1713 * but you can hack it to show more, if you'd like to. */
1714 if (dataframe)
1715 IWL_DEBUG_RX("%s: mhd=0x%04x, dst=0x%02x, "
1716 "len=%u, rssi=%d, chnl=%d, rate=%u, \n",
1717 title, fc, header->addr1[5],
1718 length, rssi, channel, rate);
1719 else {
1720 /* src/dst addresses assume managed mode */
1721 IWL_DEBUG_RX("%s: 0x%04x, dst=0x%02x, "
1722 "src=0x%02x, rssi=%u, tim=%lu usec, "
1723 "phy=0x%02x, chnl=%d\n",
1724 title, fc, header->addr1[5],
1725 header->addr3[5], rssi,
1726 tsf_low - priv->scan_start_tsf,
1727 phy_flags, channel);
1728 }
1729 }
1730 if (print_dump)
1731 iwl_print_hex_dump(IWL_DL_RX, data, length);
1732}
1733#endif
1734
1735static void iwl_unset_hw_setting(struct iwl_priv *priv)
1736{
1737 if (priv->hw_setting.shared_virt)
1738 pci_free_consistent(priv->pci_dev,
1739 sizeof(struct iwl_shared),
1740 priv->hw_setting.shared_virt,
1741 priv->hw_setting.shared_phys);
1742}
1743
1744/**
1745 * iwl_supported_rate_to_ie - fill in the supported rate in IE field
1746 *
1747 * return : set the bit for each supported rate insert in ie
1748 */
1749static u16 iwl_supported_rate_to_ie(u8 *ie, u16 supported_rate,
c7c46676 1750 u16 basic_rate, int *left)
b481de9c
ZY		 1751{
1752 u16 ret_rates = 0, bit;
1753 int i;
c7c46676
TW		 1754 u8 *cnt = ie;
1755 u8 *rates = ie + 1;
b481de9c
ZY		 1756
1757 for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1758 if (bit & supported_rate) {
1759 ret_rates |= bit;
c7c46676
TW		 1760 rates[*cnt] = iwl_rates[i].ieee |
1761 ((bit & basic_rate) ? 0x80 : 0x00);
1762 (*cnt)++;
1763 (*left)--;
1764 if ((*left <= 0) ||
1765 (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
b481de9c
ZY		 1766 break;
1767 }
1768 }
1769
1770 return ret_rates;
1771}
1772
1773/**
1774 * iwl_fill_probe_req - fill in all required fields and IE for probe request
1775 */
1776static u16 iwl_fill_probe_req(struct iwl_priv *priv,
1777 struct ieee80211_mgmt *frame,
1778 int left, int is_direct)
1779{
1780 int len = 0;
1781 u8 *pos = NULL;
c7c46676 1782 u16 active_rates, ret_rates, cck_rates;
b481de9c
ZY		 1783
1784 /* Make sure there is enough space for the probe request,
1785 * two mandatory IEs and the data */
1786 left -= 24;
1787 if (left < 0)
1788 return 0;
1789 len += 24;
1790
1791 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1792 memcpy(frame->da, BROADCAST_ADDR, ETH_ALEN);
1793 memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1794 memcpy(frame->bssid, BROADCAST_ADDR, ETH_ALEN);
1795 frame->seq_ctrl = 0;
1796
1797 /* fill in our indirect SSID IE */
1798 /* ...next IE... */
1799
1800 left -= 2;
1801 if (left < 0)
1802 return 0;
1803 len += 2;
1804 pos = &(frame->u.probe_req.variable[0]);
1805 *pos++ = WLAN_EID_SSID;
1806 *pos++ = 0;
1807
1808 /* fill in our direct SSID IE... */
1809 if (is_direct) {
1810 /* ...next IE... */
1811 left -= 2 + priv->essid_len;
1812 if (left < 0)
1813 return 0;
1814 /* ... fill it in... */
1815 *pos++ = WLAN_EID_SSID;
1816 *pos++ = priv->essid_len;
1817 memcpy(pos, priv->essid, priv->essid_len);
1818 pos += priv->essid_len;
1819 len += 2 + priv->essid_len;
1820 }
1821
1822 /* fill in supported rate */
1823 /* ...next IE... */
1824 left -= 2;
1825 if (left < 0)
1826 return 0;
c7c46676 1827
b481de9c
ZY		 1828 /* ... fill it in... */
1829 *pos++ = WLAN_EID_SUPP_RATES;
1830 *pos = 0;
c7c46676
TW		 1831
1832 priv->active_rate = priv->rates_mask;
1833 active_rates = priv->active_rate;
b481de9c
ZY		 1834 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1835
c7c46676
TW		 1836 cck_rates = IWL_CCK_RATES_MASK & active_rates;
1837 ret_rates = iwl_supported_rate_to_ie(pos, cck_rates,
1838 priv->active_rate_basic, &left);
1839 active_rates &= ~ret_rates;
1840
1841 ret_rates = iwl_supported_rate_to_ie(pos, active_rates,
1842 priv->active_rate_basic, &left);
1843 active_rates &= ~ret_rates;
1844
b481de9c
ZY		 1845 len += 2 + *pos;
1846 pos += (*pos) + 1;
c7c46676 1847 if (active_rates == 0)
b481de9c
ZY		 1848 goto fill_end;
1849
1850 /* fill in supported extended rate */
1851 /* ...next IE... */
1852 left -= 2;
1853 if (left < 0)
1854 return 0;
1855 /* ... fill it in... */
1856 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1857 *pos = 0;
c7c46676
TW		 1858 iwl_supported_rate_to_ie(pos, active_rates,
1859 priv->active_rate_basic, &left);
b481de9c
ZY		 1860 if (*pos > 0)
1861 len += 2 + *pos;
1862
1863 fill_end:
1864 return (u16)len;
1865}
1866
1867/*
1868 * QoS support
1869*/
1870#ifdef CONFIG_IWLWIFI_QOS
1871static int iwl_send_qos_params_command(struct iwl_priv *priv,
1872 struct iwl_qosparam_cmd *qos)
1873{
1874
1875 return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1876 sizeof(struct iwl_qosparam_cmd), qos);
1877}
1878
1879static void iwl_reset_qos(struct iwl_priv *priv)
1880{
1881 u16 cw_min = 15;
1882 u16 cw_max = 1023;
1883 u8 aifs = 2;
1884 u8 is_legacy = 0;
1885 unsigned long flags;
1886 int i;
1887
1888 spin_lock_irqsave(&priv->lock, flags);
1889 priv->qos_data.qos_active = 0;
1890
1891 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) {
1892 if (priv->qos_data.qos_enable)
1893 priv->qos_data.qos_active = 1;
1894 if (!(priv->active_rate & 0xfff0)) {
1895 cw_min = 31;
1896 is_legacy = 1;
1897 }
1898 } else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1899 if (priv->qos_data.qos_enable)
1900 priv->qos_data.qos_active = 1;
1901 } else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
1902 cw_min = 31;
1903 is_legacy = 1;
1904 }
1905
1906 if (priv->qos_data.qos_active)
1907 aifs = 3;
1908
1909 priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
1910 priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
1911 priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
1912 priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
1913 priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
1914
1915 if (priv->qos_data.qos_active) {
1916 i = 1;
1917 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
1918 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
1919 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
1920 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1921 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1922
1923 i = 2;
1924 priv->qos_data.def_qos_parm.ac[i].cw_min =
1925 cpu_to_le16((cw_min + 1) / 2 - 1);
1926 priv->qos_data.def_qos_parm.ac[i].cw_max =
1927 cpu_to_le16(cw_max);
1928 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1929 if (is_legacy)
1930 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1931 cpu_to_le16(6016);
1932 else
1933 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1934 cpu_to_le16(3008);
1935 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1936
1937 i = 3;
1938 priv->qos_data.def_qos_parm.ac[i].cw_min =
1939 cpu_to_le16((cw_min + 1) / 4 - 1);
1940 priv->qos_data.def_qos_parm.ac[i].cw_max =
1941 cpu_to_le16((cw_max + 1) / 2 - 1);
1942 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1943 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1944 if (is_legacy)
1945 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1946 cpu_to_le16(3264);
1947 else
1948 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1949 cpu_to_le16(1504);
1950 } else {
1951 for (i = 1; i < 4; i++) {
1952 priv->qos_data.def_qos_parm.ac[i].cw_min =
1953 cpu_to_le16(cw_min);
1954 priv->qos_data.def_qos_parm.ac[i].cw_max =
1955 cpu_to_le16(cw_max);
1956 priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
1957 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1958 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1959 }
1960 }
1961 IWL_DEBUG_QOS("set QoS to default \n");
1962
1963 spin_unlock_irqrestore(&priv->lock, flags);
1964}
1965
1966static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
1967{
1968 unsigned long flags;
1969
1970 if (priv == NULL)
1971 return;
1972
1973 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1974 return;
1975
1976 if (!priv->qos_data.qos_enable)
1977 return;
1978
1979 spin_lock_irqsave(&priv->lock, flags);
1980 priv->qos_data.def_qos_parm.qos_flags = 0;
1981
1982 if (priv->qos_data.qos_cap.q_AP.queue_request &&
1983 !priv->qos_data.qos_cap.q_AP.txop_request)
1984 priv->qos_data.def_qos_parm.qos_flags |=
1985 QOS_PARAM_FLG_TXOP_TYPE_MSK;
1986
1987 if (priv->qos_data.qos_active)
1988 priv->qos_data.def_qos_parm.qos_flags |=
1989 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
1990
1991 spin_unlock_irqrestore(&priv->lock, flags);
1992
1993 if (force || iwl_is_associated(priv)) {
1994 IWL_DEBUG_QOS("send QoS cmd with Qos active %d \n",
1995 priv->qos_data.qos_active);
1996
1997 iwl_send_qos_params_command(priv,
1998 &(priv->qos_data.def_qos_parm));
1999 }
2000}
2001
2002#endif /* CONFIG_IWLWIFI_QOS */
2003/*
2004 * Power management (not Tx power!) functions
2005 */
2006#define MSEC_TO_USEC 1024
2007
2008#define NOSLP __constant_cpu_to_le32(0)
2009#define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK
2010#define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
2011#define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
2012 __constant_cpu_to_le32(X1), \
2013 __constant_cpu_to_le32(X2), \
2014 __constant_cpu_to_le32(X3), \
2015 __constant_cpu_to_le32(X4)}
2016
2017
2018/* default power management (not Tx power) table values */
2019/* for tim 0-10 */
2020static struct iwl_power_vec_entry range_0[IWL_POWER_AC] = {
2021 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2022 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
2023 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
2024 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
2025 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
2026 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
2027};
2028
2029/* for tim > 10 */
2030static struct iwl_power_vec_entry range_1[IWL_POWER_AC] = {
2031 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2032 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
2033 SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
2034 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
2035 SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
2036 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
2037 SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
2038 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
2039 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
2040 SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
2041};
2042
2043int iwl_power_init_handle(struct iwl_priv *priv)
2044{
2045 int rc = 0, i;
2046 struct iwl_power_mgr *pow_data;
2047 int size = sizeof(struct iwl_power_vec_entry) * IWL_POWER_AC;
2048 u16 pci_pm;
2049
2050 IWL_DEBUG_POWER("Initialize power \n");
2051
2052 pow_data = &(priv->power_data);
2053
2054 memset(pow_data, 0, sizeof(*pow_data));
2055
2056 pow_data->active_index = IWL_POWER_RANGE_0;
2057 pow_data->dtim_val = 0xffff;
2058
2059 memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
2060 memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
2061
2062 rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
2063 if (rc != 0)
2064 return 0;
2065 else {
2066 struct iwl_powertable_cmd *cmd;
2067
2068 IWL_DEBUG_POWER("adjust power command flags\n");
2069
2070 for (i = 0; i < IWL_POWER_AC; i++) {
2071 cmd = &pow_data->pwr_range_0[i].cmd;
2072
2073 if (pci_pm & 0x1)
2074 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
2075 else
2076 cmd->flags |= IWL_POWER_PCI_PM_MSK;
2077 }
2078 }
2079 return rc;
2080}
2081
2082static int iwl_update_power_cmd(struct iwl_priv *priv,
2083 struct iwl_powertable_cmd *cmd, u32 mode)
2084{
2085 int rc = 0, i;
2086 u8 skip;
2087 u32 max_sleep = 0;
2088 struct iwl_power_vec_entry *range;
2089 u8 period = 0;
2090 struct iwl_power_mgr *pow_data;
2091
2092 if (mode > IWL_POWER_INDEX_5) {
2093 IWL_DEBUG_POWER("Error invalid power mode \n");
2094 return -1;
2095 }
2096 pow_data = &(priv->power_data);
2097
2098 if (pow_data->active_index == IWL_POWER_RANGE_0)
2099 range = &pow_data->pwr_range_0[0];
2100 else
2101 range = &pow_data->pwr_range_1[1];
2102
2103 memcpy(cmd, &range[mode].cmd, sizeof(struct iwl_powertable_cmd));
2104
2105#ifdef IWL_MAC80211_DISABLE
2106 if (priv->assoc_network != NULL) {
2107 unsigned long flags;
2108
2109 period = priv->assoc_network->tim.tim_period;
2110 }
2111#endif /*IWL_MAC80211_DISABLE */
2112 skip = range[mode].no_dtim;
2113
2114 if (period == 0) {
2115 period = 1;
2116 skip = 0;
2117 }
2118
2119 if (skip == 0) {
2120 max_sleep = period;
2121 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
2122 } else {
2123 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
2124 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
2125 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
2126 }
2127
2128 for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
2129 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
2130 cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
2131 }
2132
2133 IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
2134 IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
2135 IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
2136 IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
2137 le32_to_cpu(cmd->sleep_interval[0]),
2138 le32_to_cpu(cmd->sleep_interval[1]),
2139 le32_to_cpu(cmd->sleep_interval[2]),
2140 le32_to_cpu(cmd->sleep_interval[3]),
2141 le32_to_cpu(cmd->sleep_interval[4]));
2142
2143 return rc;
2144}
2145
2146static int iwl_send_power_mode(struct iwl_priv *priv, u32 mode)
2147{
2148 u32 final_mode = mode;
2149 int rc;
2150 struct iwl_powertable_cmd cmd;
2151
2152 /* If on battery, set to 3,
01ebd063 2153 * if plugged into AC power, set to CAM ("continuously aware mode"),
b481de9c
ZY		 2154 * else user level */
2155 switch (mode) {
2156 case IWL_POWER_BATTERY:
2157 final_mode = IWL_POWER_INDEX_3;
2158 break;
2159 case IWL_POWER_AC:
2160 final_mode = IWL_POWER_MODE_CAM;
2161 break;
2162 default:
2163 final_mode = mode;
2164 break;
2165 }
2166
2167 iwl_update_power_cmd(priv, &cmd, final_mode);
2168
2169 rc = iwl_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
2170
2171 if (final_mode == IWL_POWER_MODE_CAM)
2172 clear_bit(STATUS_POWER_PMI, &priv->status);
2173 else
2174 set_bit(STATUS_POWER_PMI, &priv->status);
2175
2176 return rc;
2177}
2178
2179int iwl_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
2180{
2181 /* Filter incoming packets to determine if they are targeted toward
2182 * this network, discarding packets coming from ourselves */
2183 switch (priv->iw_mode) {
2184 case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source | BSSID */
2185 /* packets from our adapter are dropped (echo) */
2186 if (!compare_ether_addr(header->addr2, priv->mac_addr))
2187 return 0;
2188 /* {broad,multi}cast packets to our IBSS go through */
2189 if (is_multicast_ether_addr(header->addr1))
2190 return !compare_ether_addr(header->addr3, priv->bssid);
2191 /* packets to our adapter go through */
2192 return !compare_ether_addr(header->addr1, priv->mac_addr);
2193 case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
2194 /* packets from our adapter are dropped (echo) */
2195 if (!compare_ether_addr(header->addr3, priv->mac_addr))
2196 return 0;
2197 /* {broad,multi}cast packets to our BSS go through */
2198 if (is_multicast_ether_addr(header->addr1))
2199 return !compare_ether_addr(header->addr2, priv->bssid);
2200 /* packets to our adapter go through */
2201 return !compare_ether_addr(header->addr1, priv->mac_addr);
2202 }
2203
2204 return 1;
2205}
2206
2207#define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2208
2209const char *iwl_get_tx_fail_reason(u32 status)
2210{
2211 switch (status & TX_STATUS_MSK) {
2212 case TX_STATUS_SUCCESS:
2213 return "SUCCESS";
2214 TX_STATUS_ENTRY(SHORT_LIMIT);
2215 TX_STATUS_ENTRY(LONG_LIMIT);
2216 TX_STATUS_ENTRY(FIFO_UNDERRUN);
2217 TX_STATUS_ENTRY(MGMNT_ABORT);
2218 TX_STATUS_ENTRY(NEXT_FRAG);
2219 TX_STATUS_ENTRY(LIFE_EXPIRE);
2220 TX_STATUS_ENTRY(DEST_PS);
2221 TX_STATUS_ENTRY(ABORTED);
2222 TX_STATUS_ENTRY(BT_RETRY);
2223 TX_STATUS_ENTRY(STA_INVALID);
2224 TX_STATUS_ENTRY(FRAG_DROPPED);
2225 TX_STATUS_ENTRY(TID_DISABLE);
2226 TX_STATUS_ENTRY(FRAME_FLUSHED);
2227 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
2228 TX_STATUS_ENTRY(TX_LOCKED);
2229 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
2230 }
2231
2232 return "UNKNOWN";
2233}
2234
2235/**
2236 * iwl_scan_cancel - Cancel any currently executing HW scan
2237 *
2238 * NOTE: priv->mutex is not required before calling this function
2239 */
2240static int iwl_scan_cancel(struct iwl_priv *priv)
2241{
2242 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
2243 clear_bit(STATUS_SCANNING, &priv->status);
2244 return 0;
2245 }
2246
2247 if (test_bit(STATUS_SCANNING, &priv->status)) {
2248 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2249 IWL_DEBUG_SCAN("Queuing scan abort.\n");
2250 set_bit(STATUS_SCAN_ABORTING, &priv->status);
2251 queue_work(priv->workqueue, &priv->abort_scan);
2252
2253 } else
2254 IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2255
2256 return test_bit(STATUS_SCANNING, &priv->status);
2257 }
2258
2259 return 0;
2260}
2261
2262/**
2263 * iwl_scan_cancel_timeout - Cancel any currently executing HW scan
2264 * @ms: amount of time to wait (in milliseconds) for scan to abort
2265 *
2266 * NOTE: priv->mutex must be held before calling this function
2267 */
2268static int iwl_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
2269{
2270 unsigned long now = jiffies;
2271 int ret;
2272
2273 ret = iwl_scan_cancel(priv);
2274 if (ret && ms) {
2275 mutex_unlock(&priv->mutex);
2276 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
2277 test_bit(STATUS_SCANNING, &priv->status))
2278 msleep(1);
2279 mutex_lock(&priv->mutex);
2280
2281 return test_bit(STATUS_SCANNING, &priv->status);
2282 }
2283
2284 return ret;
2285}
2286
2287static void iwl_sequence_reset(struct iwl_priv *priv)
2288{
2289 /* Reset ieee stats */
2290
2291 /* We don't reset the net_device_stats (ieee->stats) on
2292 * re-association */
2293
2294 priv->last_seq_num = -1;
2295 priv->last_frag_num = -1;
2296 priv->last_packet_time = 0;
2297
2298 iwl_scan_cancel(priv);
2299}
2300
2301#define MAX_UCODE_BEACON_INTERVAL 1024
2302#define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
2303
2304static __le16 iwl_adjust_beacon_interval(u16 beacon_val)
2305{
2306 u16 new_val = 0;
2307 u16 beacon_factor = 0;
2308
2309 beacon_factor =
2310 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
2311 / MAX_UCODE_BEACON_INTERVAL;
2312 new_val = beacon_val / beacon_factor;
2313
2314 return cpu_to_le16(new_val);
2315}
2316
2317static void iwl_setup_rxon_timing(struct iwl_priv *priv)
2318{
2319 u64 interval_tm_unit;
2320 u64 tsf, result;
2321 unsigned long flags;
2322 struct ieee80211_conf *conf = NULL;
2323 u16 beacon_int = 0;
2324
2325 conf = ieee80211_get_hw_conf(priv->hw);
2326
2327 spin_lock_irqsave(&priv->lock, flags);
2328 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
2329 priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);
2330
2331 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
2332
2333 tsf = priv->timestamp1;
2334 tsf = ((tsf << 32) | priv->timestamp0);
2335
2336 beacon_int = priv->beacon_int;
2337 spin_unlock_irqrestore(&priv->lock, flags);
2338
2339 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
2340 if (beacon_int == 0) {
2341 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
2342 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
2343 } else {
2344 priv->rxon_timing.beacon_interval =
2345 cpu_to_le16(beacon_int);
2346 priv->rxon_timing.beacon_interval =
2347 iwl_adjust_beacon_interval(
2348 le16_to_cpu(priv->rxon_timing.beacon_interval));
2349 }
2350
2351 priv->rxon_timing.atim_window = 0;
2352 } else {
2353 priv->rxon_timing.beacon_interval =
2354 iwl_adjust_beacon_interval(conf->beacon_int);
2355 /* TODO: we need to get atim_window from upper stack
2356 * for now we set to 0 */
2357 priv->rxon_timing.atim_window = 0;
2358 }
2359
2360 interval_tm_unit =
2361 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2362 result = do_div(tsf, interval_tm_unit);
2363 priv->rxon_timing.beacon_init_val =
2364 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2365
2366 IWL_DEBUG_ASSOC
2367 ("beacon interval %d beacon timer %d beacon tim %d\n",
2368 le16_to_cpu(priv->rxon_timing.beacon_interval),
2369 le32_to_cpu(priv->rxon_timing.beacon_init_val),
2370 le16_to_cpu(priv->rxon_timing.atim_window));
2371}
2372
2373static int iwl_scan_initiate(struct iwl_priv *priv)
2374{
2375 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2376 IWL_ERROR("APs don't scan.\n");
2377 return 0;
2378 }
2379
2380 if (!iwl_is_ready_rf(priv)) {
2381 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2382 return -EIO;
2383 }
2384
2385 if (test_bit(STATUS_SCANNING, &priv->status)) {
2386 IWL_DEBUG_SCAN("Scan already in progress.\n");
2387 return -EAGAIN;
2388 }
2389
2390 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2391 IWL_DEBUG_SCAN("Scan request while abort pending. "
2392 "Queuing.\n");
2393 return -EAGAIN;
2394 }
2395
2396 IWL_DEBUG_INFO("Starting scan...\n");
2397 priv->scan_bands = 2;
2398 set_bit(STATUS_SCANNING, &priv->status);
2399 priv->scan_start = jiffies;
2400 priv->scan_pass_start = priv->scan_start;
2401
2402 queue_work(priv->workqueue, &priv->request_scan);
2403
2404 return 0;
2405}
2406
2407static int iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
2408{
2409 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
2410
2411 if (hw_decrypt)
2412 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2413 else
2414 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2415
2416 return 0;
2417}
2418
2419static void iwl_set_flags_for_phymode(struct iwl_priv *priv, u8 phymode)
2420{
2421 if (phymode == MODE_IEEE80211A) {
2422 priv->staging_rxon.flags &=
2423 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2424 | RXON_FLG_CCK_MSK);
2425 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2426 } else {
2427 /* Copied from iwl_bg_post_associate() */
2428 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2429 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2430 else
2431 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2432
2433 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2434 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2435
2436 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2437 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2438 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2439 }
2440}
2441
2442/*
01ebd063 2443 * initialize rxon structure with default values from eeprom
b481de9c
ZY		 2444 */
2445static void iwl_connection_init_rx_config(struct iwl_priv *priv)
2446{
2447 const struct iwl_channel_info *ch_info;
2448
2449 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2450
2451 switch (priv->iw_mode) {
2452 case IEEE80211_IF_TYPE_AP:
2453 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2454 break;
2455
2456 case IEEE80211_IF_TYPE_STA:
2457 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2458 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2459 break;
2460
2461 case IEEE80211_IF_TYPE_IBSS:
2462 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2463 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2464 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2465 RXON_FILTER_ACCEPT_GRP_MSK;
2466 break;
2467
2468 case IEEE80211_IF_TYPE_MNTR:
2469 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2470 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2471 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2472 break;
2473 }
2474
2475#if 0
2476 /* TODO: Figure out when short_preamble would be set and cache from
2477 * that */
2478 if (!hw_to_local(priv->hw)->short_preamble)
2479 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2480 else
2481 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2482#endif
2483
2484 ch_info = iwl_get_channel_info(priv, priv->phymode,
2485 le16_to_cpu(priv->staging_rxon.channel));
2486
2487 if (!ch_info)
2488 ch_info = &priv->channel_info[0];
2489
2490 /*
2491 * in some case A channels are all non IBSS
2492 * in this case force B/G channel
2493 */
2494 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
2495 !(is_channel_ibss(ch_info)))
2496 ch_info = &priv->channel_info[0];
2497
2498 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2499 if (is_channel_a_band(ch_info))
2500 priv->phymode = MODE_IEEE80211A;
2501 else
2502 priv->phymode = MODE_IEEE80211G;
2503
2504 iwl_set_flags_for_phymode(priv, priv->phymode);
2505
2506 priv->staging_rxon.ofdm_basic_rates =
2507 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2508 priv->staging_rxon.cck_basic_rates =
2509 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2510}
2511
2512static int iwl_set_mode(struct iwl_priv *priv, int mode)
2513{
2514 if (!iwl_is_ready_rf(priv))
2515 return -EAGAIN;
2516
2517 if (mode == IEEE80211_IF_TYPE_IBSS) {
2518 const struct iwl_channel_info *ch_info;
2519
2520 ch_info = iwl_get_channel_info(priv,
2521 priv->phymode,
2522 le16_to_cpu(priv->staging_rxon.channel));
2523
2524 if (!ch_info || !is_channel_ibss(ch_info)) {
2525 IWL_ERROR("channel %d not IBSS channel\n",
2526 le16_to_cpu(priv->staging_rxon.channel));
2527 return -EINVAL;
2528 }
2529 }
2530
2531 cancel_delayed_work(&priv->scan_check);
2532 if (iwl_scan_cancel_timeout(priv, 100)) {
2533 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2534 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2535 return -EAGAIN;
2536 }
2537
2538 priv->iw_mode = mode;
2539
2540 iwl_connection_init_rx_config(priv);
2541 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2542
2543 iwl_clear_stations_table(priv);
2544
2545 iwl_commit_rxon(priv);
2546
2547 return 0;
2548}
2549
2550static void iwl_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
2551 struct ieee80211_tx_control *ctl,
2552 struct iwl_cmd *cmd,
2553 struct sk_buff *skb_frag,
2554 int last_frag)
2555{
2556 struct iwl_hw_key *keyinfo = &priv->stations[ctl->key_idx].keyinfo;
2557
2558 switch (keyinfo->alg) {
2559 case ALG_CCMP:
2560 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2561 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2562 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2563 break;
2564
2565 case ALG_TKIP:
2566#if 0
2567 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2568
2569 if (last_frag)
2570 memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2571 8);
2572 else
2573 memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2574#endif
2575 break;
2576
2577 case ALG_WEP:
2578 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2579 (ctl->key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2580
2581 if (keyinfo->keylen == 13)
2582 cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2583
2584 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2585
2586 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2587 "with key %d\n", ctl->key_idx);
2588 break;
2589
b481de9c
ZY		 2590 default:
2591 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2592 break;
2593 }
2594}
2595
2596/*
2597 * handle build REPLY_TX command notification.
2598 */
2599static void iwl_build_tx_cmd_basic(struct iwl_priv *priv,
2600 struct iwl_cmd *cmd,
2601 struct ieee80211_tx_control *ctrl,
2602 struct ieee80211_hdr *hdr,
2603 int is_unicast, u8 std_id)
2604{
2605 __le16 *qc;
2606 u16 fc = le16_to_cpu(hdr->frame_control);
2607 __le32 tx_flags = cmd->cmd.tx.tx_flags;
2608
2609 cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2610 if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
2611 tx_flags |= TX_CMD_FLG_ACK_MSK;
2612 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
2613 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2614 if (ieee80211_is_probe_response(fc) &&
2615 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2616 tx_flags |= TX_CMD_FLG_TSF_MSK;
2617 } else {
2618 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2619 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2620 }
2621
2622 cmd->cmd.tx.sta_id = std_id;
2623 if (ieee80211_get_morefrag(hdr))
2624 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2625
2626 qc = ieee80211_get_qos_ctrl(hdr);
2627 if (qc) {
2628 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
2629 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2630 } else
2631 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2632
2633 if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
2634 tx_flags |= TX_CMD_FLG_RTS_MSK;
2635 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2636 } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
2637 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2638 tx_flags |= TX_CMD_FLG_CTS_MSK;
2639 }
2640
2641 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2642 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2643
2644 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2645 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
2646 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
2647 (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
2648 cmd->cmd.tx.timeout.pm_frame_timeout =
2649 cpu_to_le16(3);
2650 else
2651 cmd->cmd.tx.timeout.pm_frame_timeout =
2652 cpu_to_le16(2);
2653 } else
2654 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2655
2656 cmd->cmd.tx.driver_txop = 0;
2657 cmd->cmd.tx.tx_flags = tx_flags;
2658 cmd->cmd.tx.next_frame_len = 0;
2659}
2660
2661static int iwl_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
2662{
2663 int sta_id;
2664 u16 fc = le16_to_cpu(hdr->frame_control);
2665
2666 /* If this frame is broadcast or not data then use the broadcast
2667 * station id */
2668 if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2669 is_multicast_ether_addr(hdr->addr1))
2670 return priv->hw_setting.bcast_sta_id;
2671
2672 switch (priv->iw_mode) {
2673
2674 /* If this frame is part of a BSS network (we're a station), then
2675 * we use the AP's station id */
2676 case IEEE80211_IF_TYPE_STA:
2677 return IWL_AP_ID;
2678
2679 /* If we are an AP, then find the station, or use BCAST */
2680 case IEEE80211_IF_TYPE_AP:
2681 sta_id = iwl_hw_find_station(priv, hdr->addr1);
2682 if (sta_id != IWL_INVALID_STATION)
2683 return sta_id;
2684 return priv->hw_setting.bcast_sta_id;
2685
2686 /* If this frame is part of a IBSS network, then we use the
2687 * target specific station id */
0795af57
JP		 2688 case IEEE80211_IF_TYPE_IBSS: {
2689 DECLARE_MAC_BUF(mac);
2690
b481de9c
ZY		 2691 sta_id = iwl_hw_find_station(priv, hdr->addr1);
2692 if (sta_id != IWL_INVALID_STATION)
2693 return sta_id;
2694
2695 sta_id = iwl_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
2696
2697 if (sta_id != IWL_INVALID_STATION)
2698 return sta_id;
2699
0795af57 2700 IWL_DEBUG_DROP("Station %s not in station map. "
b481de9c 2701 "Defaulting to broadcast...\n",
0795af57 2702 print_mac(mac, hdr->addr1));
b481de9c
ZY		 2703 iwl_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2704 return priv->hw_setting.bcast_sta_id;
0795af57 2705 }
b481de9c 2706 default:
01ebd063 2707 IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
b481de9c
ZY		 2708 return priv->hw_setting.bcast_sta_id;
2709 }
2710}
2711
2712/*
2713 * start REPLY_TX command process
2714 */
2715static int iwl_tx_skb(struct iwl_priv *priv,
2716 struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2717{
2718 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2719 struct iwl_tfd_frame *tfd;
2720 u32 *control_flags;
2721 int txq_id = ctl->queue;
2722 struct iwl_tx_queue *txq = NULL;
2723 struct iwl_queue *q = NULL;
2724 dma_addr_t phys_addr;
2725 dma_addr_t txcmd_phys;
2726 struct iwl_cmd *out_cmd = NULL;
2727 u16 len, idx, len_org;
2728 u8 id, hdr_len, unicast;
2729 u8 sta_id;
2730 u16 seq_number = 0;
2731 u16 fc;
2732 __le16 *qc;
2733 u8 wait_write_ptr = 0;
2734 unsigned long flags;
2735 int rc;
2736
2737 spin_lock_irqsave(&priv->lock, flags);
2738 if (iwl_is_rfkill(priv)) {
2739 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2740 goto drop_unlock;
2741 }
2742
2743 if (!priv->interface_id) {
2744 IWL_DEBUG_DROP("Dropping - !priv->interface_id\n");
2745 goto drop_unlock;
2746 }
2747
2748 if ((ctl->tx_rate & 0xFF) == IWL_INVALID_RATE) {
2749 IWL_ERROR("ERROR: No TX rate available.\n");
2750 goto drop_unlock;
2751 }
2752
2753 unicast = !is_multicast_ether_addr(hdr->addr1);
2754 id = 0;
2755
2756 fc = le16_to_cpu(hdr->frame_control);
2757
2758#ifdef CONFIG_IWLWIFI_DEBUG
2759 if (ieee80211_is_auth(fc))
2760 IWL_DEBUG_TX("Sending AUTH frame\n");
2761 else if (ieee80211_is_assoc_request(fc))
2762 IWL_DEBUG_TX("Sending ASSOC frame\n");
2763 else if (ieee80211_is_reassoc_request(fc))
2764 IWL_DEBUG_TX("Sending REASSOC frame\n");
2765#endif
2766
2767 if (!iwl_is_associated(priv) &&
2768 ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)) {
2769 IWL_DEBUG_DROP("Dropping - !iwl_is_associated\n");
2770 goto drop_unlock;
2771 }
2772
2773 spin_unlock_irqrestore(&priv->lock, flags);
2774
2775 hdr_len = ieee80211_get_hdrlen(fc);
2776 sta_id = iwl_get_sta_id(priv, hdr);
2777 if (sta_id == IWL_INVALID_STATION) {
0795af57
JP		 2778 DECLARE_MAC_BUF(mac);
2779
2780 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2781 print_mac(mac, hdr->addr1));
b481de9c
ZY		 2782 goto drop;
2783 }
2784
2785 IWL_DEBUG_RATE("station Id %d\n", sta_id);
2786
2787 qc = ieee80211_get_qos_ctrl(hdr);
2788 if (qc) {
2789 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2790 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2791 IEEE80211_SCTL_SEQ;
2792 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2793 (hdr->seq_ctrl &
2794 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2795 seq_number += 0x10;
2796 }
2797 txq = &priv->txq[txq_id];
2798 q = &txq->q;
2799
2800 spin_lock_irqsave(&priv->lock, flags);
2801
2802 tfd = &txq->bd[q->first_empty];
2803 memset(tfd, 0, sizeof(*tfd));
2804 control_flags = (u32 *) tfd;
2805 idx = get_cmd_index(q, q->first_empty, 0);
2806
2807 memset(&(txq->txb[q->first_empty]), 0, sizeof(struct iwl_tx_info));
2808 txq->txb[q->first_empty].skb[0] = skb;
2809 memcpy(&(txq->txb[q->first_empty].status.control),
2810 ctl, sizeof(struct ieee80211_tx_control));
2811 out_cmd = &txq->cmd[idx];
2812 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2813 memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2814 out_cmd->hdr.cmd = REPLY_TX;
2815 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2816 INDEX_TO_SEQ(q->first_empty)));
2817 /* copy frags header */
2818 memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2819
2820 /* hdr = (struct ieee80211_hdr *)out_cmd->cmd.tx.hdr; */
2821 len = priv->hw_setting.tx_cmd_len +
2822 sizeof(struct iwl_cmd_header) + hdr_len;
2823
2824 len_org = len;
2825 len = (len + 3) & ~3;
2826
2827 if (len_org != len)
2828 len_org = 1;
2829 else
2830 len_org = 0;
2831
2832 txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl_cmd) * idx +
2833 offsetof(struct iwl_cmd, hdr);
2834
2835 iwl_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2836
2837 if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
2838 iwl_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, 0);
2839
2840 /* 802.11 null functions have no payload... */
2841 len = skb->len - hdr_len;
2842 if (len) {
2843 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2844 len, PCI_DMA_TODEVICE);
2845 iwl_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2846 }
2847
2848 /* If there is no payload, then only one TFD is used */
2849 if (!len)
2850 *control_flags = TFD_CTL_COUNT_SET(1);
2851 else
2852 *control_flags = TFD_CTL_COUNT_SET(2) |
2853 TFD_CTL_PAD_SET(U32_PAD(len));
2854
2855 len = (u16)skb->len;
2856 out_cmd->cmd.tx.len = cpu_to_le16(len);
2857
2858 /* TODO need this for burst mode later on */
2859 iwl_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
2860
2861 /* set is_hcca to 0; it probably will never be implemented */
2862 iwl_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
2863
2864 out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
2865 out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
2866
2867 if (!ieee80211_get_morefrag(hdr)) {
2868 txq->need_update = 1;
2869 if (qc) {
2870 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2871 priv->stations[sta_id].tid[tid].seq_number = seq_number;
2872 }
2873 } else {
2874 wait_write_ptr = 1;
2875 txq->need_update = 0;
2876 }
2877
2878 iwl_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
2879 sizeof(out_cmd->cmd.tx));
2880
2881 iwl_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2882 ieee80211_get_hdrlen(fc));
2883
2884 q->first_empty = iwl_queue_inc_wrap(q->first_empty, q->n_bd);
2885 rc = iwl_tx_queue_update_write_ptr(priv, txq);
2886 spin_unlock_irqrestore(&priv->lock, flags);
2887
2888 if (rc)
2889 return rc;
2890
2891 if ((iwl_queue_space(q) < q->high_mark)
2892 && priv->mac80211_registered) {
2893 if (wait_write_ptr) {
2894 spin_lock_irqsave(&priv->lock, flags);
2895 txq->need_update = 1;
2896 iwl_tx_queue_update_write_ptr(priv, txq);
2897 spin_unlock_irqrestore(&priv->lock, flags);
2898 }
2899
2900 ieee80211_stop_queue(priv->hw, ctl->queue);
2901 }
2902
2903 return 0;
2904
2905drop_unlock:
2906 spin_unlock_irqrestore(&priv->lock, flags);
2907drop:
2908 return -1;
2909}
2910
2911static void iwl_set_rate(struct iwl_priv *priv)
2912{
2913 const struct ieee80211_hw_mode *hw = NULL;
2914 struct ieee80211_rate *rate;
2915 int i;
2916
2917 hw = iwl_get_hw_mode(priv, priv->phymode);
c4ba9621
SA		 2918 if (!hw) {
2919 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
2920 return;
2921 }
b481de9c
ZY		 2922
2923 priv->active_rate = 0;
2924 priv->active_rate_basic = 0;
2925
2926 IWL_DEBUG_RATE("Setting rates for 802.11%c\n",
2927 hw->mode == MODE_IEEE80211A ?
2928 'a' : ((hw->mode == MODE_IEEE80211B) ? 'b' : 'g'));
2929
2930 for (i = 0; i < hw->num_rates; i++) {
2931 rate = &(hw->rates[i]);
2932 if ((rate->val < IWL_RATE_COUNT) &&
2933 (rate->flags & IEEE80211_RATE_SUPPORTED)) {
2934 IWL_DEBUG_RATE("Adding rate index %d (plcp %d)%s\n",
2935 rate->val, iwl_rates[rate->val].plcp,
2936 (rate->flags & IEEE80211_RATE_BASIC) ?
2937 "*" : "");
2938 priv->active_rate |= (1 << rate->val);
2939 if (rate->flags & IEEE80211_RATE_BASIC)
2940 priv->active_rate_basic |= (1 << rate->val);
2941 } else
2942 IWL_DEBUG_RATE("Not adding rate %d (plcp %d)\n",
2943 rate->val, iwl_rates[rate->val].plcp);
2944 }
2945
2946 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
2947 priv->active_rate, priv->active_rate_basic);
2948
2949 /*
2950 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
2951 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
2952 * OFDM
2953 */
2954 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
2955 priv->staging_rxon.cck_basic_rates =
2956 ((priv->active_rate_basic &
2957 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
2958 else
2959 priv->staging_rxon.cck_basic_rates =
2960 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2961
2962 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
2963 priv->staging_rxon.ofdm_basic_rates =
2964 ((priv->active_rate_basic &
2965 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
2966 IWL_FIRST_OFDM_RATE) & 0xFF;
2967 else
2968 priv->staging_rxon.ofdm_basic_rates =
2969 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2970}
2971
2972static void iwl_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
2973{
2974 unsigned long flags;
2975
2976 if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
2977 return;
2978
2979 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
2980 disable_radio ? "OFF" : "ON");
2981
2982 if (disable_radio) {
2983 iwl_scan_cancel(priv);
2984 /* FIXME: This is a workaround for AP */
2985 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
2986 spin_lock_irqsave(&priv->lock, flags);
2987 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2988 CSR_UCODE_SW_BIT_RFKILL);
2989 spin_unlock_irqrestore(&priv->lock, flags);
2990 iwl_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
2991 set_bit(STATUS_RF_KILL_SW, &priv->status);
2992 }
2993 return;
2994 }
2995
2996 spin_lock_irqsave(&priv->lock, flags);
2997 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2998
2999 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3000 spin_unlock_irqrestore(&priv->lock, flags);
3001
3002 /* wake up ucode */
3003 msleep(10);
3004
3005 spin_lock_irqsave(&priv->lock, flags);
3006 iwl_read32(priv, CSR_UCODE_DRV_GP1);
3007 if (!iwl_grab_restricted_access(priv))
3008 iwl_release_restricted_access(priv);
3009 spin_unlock_irqrestore(&priv->lock, flags);
3010
3011 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
3012 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3013 "disabled by HW switch\n");
3014 return;
3015 }
3016
3017 queue_work(priv->workqueue, &priv->restart);
3018 return;
3019}
3020
3021void iwl_set_decrypted_flag(struct iwl_priv *priv, struct sk_buff *skb,
3022 u32 decrypt_res, struct ieee80211_rx_status *stats)
3023{
3024 u16 fc =
3025 le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
3026
3027 if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
3028 return;
3029
3030 if (!(fc & IEEE80211_FCTL_PROTECTED))
3031 return;
3032
3033 IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
3034 switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
3035 case RX_RES_STATUS_SEC_TYPE_TKIP:
3036 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3037 RX_RES_STATUS_BAD_ICV_MIC)
3038 stats->flag |= RX_FLAG_MMIC_ERROR;
3039 case RX_RES_STATUS_SEC_TYPE_WEP:
3040 case RX_RES_STATUS_SEC_TYPE_CCMP:
3041 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3042 RX_RES_STATUS_DECRYPT_OK) {
3043 IWL_DEBUG_RX("hw decrypt successfully!!!\n");
3044 stats->flag |= RX_FLAG_DECRYPTED;
3045 }
3046 break;
3047
3048 default:
3049 break;
3050 }
3051}
3052
3053void iwl_handle_data_packet_monitor(struct iwl_priv *priv,
3054 struct iwl_rx_mem_buffer *rxb,
3055 void *data, short len,
3056 struct ieee80211_rx_status *stats,
3057 u16 phy_flags)
3058{
3059 struct iwl_rt_rx_hdr *iwl_rt;
3060
3061 /* First cache any information we need before we overwrite
3062 * the information provided in the skb from the hardware */
3063 s8 signal = stats->ssi;
3064 s8 noise = 0;
3065 int rate = stats->rate;
3066 u64 tsf = stats->mactime;
3067 __le16 phy_flags_hw = cpu_to_le16(phy_flags);
3068
3069 /* We received data from the HW, so stop the watchdog */
3070 if (len > IWL_RX_BUF_SIZE - sizeof(*iwl_rt)) {
3071 IWL_DEBUG_DROP("Dropping too large packet in monitor\n");
3072 return;
3073 }
3074
3075 /* copy the frame data to write after where the radiotap header goes */
3076 iwl_rt = (void *)rxb->skb->data;
3077 memmove(iwl_rt->payload, data, len);
3078
3079 iwl_rt->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION;
3080 iwl_rt->rt_hdr.it_pad = 0; /* always good to zero */
3081
3082 /* total header + data */
3083 iwl_rt->rt_hdr.it_len = cpu_to_le16(sizeof(*iwl_rt));
3084
3085 /* Set the size of the skb to the size of the frame */
3086 skb_put(rxb->skb, sizeof(*iwl_rt) + len);
3087
3088 /* Big bitfield of all the fields we provide in radiotap */
3089 iwl_rt->rt_hdr.it_present =
3090 cpu_to_le32((1 << IEEE80211_RADIOTAP_TSFT) |
3091 (1 << IEEE80211_RADIOTAP_FLAGS) |
3092 (1 << IEEE80211_RADIOTAP_RATE) |
3093 (1 << IEEE80211_RADIOTAP_CHANNEL) |
3094 (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL) |
3095 (1 << IEEE80211_RADIOTAP_DBM_ANTNOISE) |
3096 (1 << IEEE80211_RADIOTAP_ANTENNA));
3097
3098 /* Zero the flags, we'll add to them as we go */
3099 iwl_rt->rt_flags = 0;
3100
3101 iwl_rt->rt_tsf = cpu_to_le64(tsf);
3102
3103 /* Convert to dBm */
3104 iwl_rt->rt_dbmsignal = signal;
3105 iwl_rt->rt_dbmnoise = noise;
3106
3107 /* Convert the channel frequency and set the flags */
3108 iwl_rt->rt_channelMHz = cpu_to_le16(stats->freq);
3109 if (!(phy_flags_hw & RX_RES_PHY_FLAGS_BAND_24_MSK))
3110 iwl_rt->rt_chbitmask =
3111 cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_5GHZ));
3112 else if (phy_flags_hw & RX_RES_PHY_FLAGS_MOD_CCK_MSK)
3113 iwl_rt->rt_chbitmask =
3114 cpu_to_le16((IEEE80211_CHAN_CCK | IEEE80211_CHAN_2GHZ));
3115 else /* 802.11g */
3116 iwl_rt->rt_chbitmask =
3117 cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_2GHZ));
3118
3119 rate = iwl_rate_index_from_plcp(rate);
3120 if (rate == -1)
3121 iwl_rt->rt_rate = 0;
3122 else
3123 iwl_rt->rt_rate = iwl_rates[rate].ieee;
3124
3125 /* antenna number */
3126 iwl_rt->rt_antenna =
3127 le16_to_cpu(phy_flags_hw & RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4;
3128
3129 /* set the preamble flag if we have it */
3130 if (phy_flags_hw & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
3131 iwl_rt->rt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3132
3133 IWL_DEBUG_RX("Rx packet of %d bytes.\n", rxb->skb->len);
3134
3135 stats->flag |= RX_FLAG_RADIOTAP;
3136 ieee80211_rx_irqsafe(priv->hw, rxb->skb, stats);
3137 rxb->skb = NULL;
3138}
3139
3140
3141#define IWL_PACKET_RETRY_TIME HZ
3142
3143int is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
3144{
3145 u16 sc = le16_to_cpu(header->seq_ctrl);
3146 u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
3147 u16 frag = sc & IEEE80211_SCTL_FRAG;
3148 u16 *last_seq, *last_frag;
3149 unsigned long *last_time;
3150
3151 switch (priv->iw_mode) {
3152 case IEEE80211_IF_TYPE_IBSS:{
3153 struct list_head *p;
3154 struct iwl_ibss_seq *entry = NULL;
3155 u8 *mac = header->addr2;
3156 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
3157
3158 __list_for_each(p, &priv->ibss_mac_hash[index]) {
3159 entry =
3160 list_entry(p, struct iwl_ibss_seq, list);
3161 if (!compare_ether_addr(entry->mac, mac))
3162 break;
3163 }
3164 if (p == &priv->ibss_mac_hash[index]) {
3165 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
3166 if (!entry) {
3167 IWL_ERROR
3168 ("Cannot malloc new mac entry\n");
3169 return 0;
3170 }
3171 memcpy(entry->mac, mac, ETH_ALEN);
3172 entry->seq_num = seq;
3173 entry->frag_num = frag;
3174 entry->packet_time = jiffies;
3175 list_add(&entry->list,
3176 &priv->ibss_mac_hash[index]);
3177 return 0;
3178 }
3179 last_seq = &entry->seq_num;
3180 last_frag = &entry->frag_num;
3181 last_time = &entry->packet_time;
3182 break;
3183 }
3184 case IEEE80211_IF_TYPE_STA:
3185 last_seq = &priv->last_seq_num;
3186 last_frag = &priv->last_frag_num;
3187 last_time = &priv->last_packet_time;
3188 break;
3189 default:
3190 return 0;
3191 }
3192 if ((*last_seq == seq) &&
3193 time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
3194 if (*last_frag == frag)
3195 goto drop;
3196 if (*last_frag + 1 != frag)
3197 /* out-of-order fragment */
3198 goto drop;
3199 } else
3200 *last_seq = seq;
3201
3202 *last_frag = frag;
3203 *last_time = jiffies;
3204 return 0;
3205
3206 drop:
3207 return 1;
3208}
3209
3210#ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
3211
3212#include "iwl-spectrum.h"
3213
3214#define BEACON_TIME_MASK_LOW 0x00FFFFFF
3215#define BEACON_TIME_MASK_HIGH 0xFF000000
3216#define TIME_UNIT 1024
3217
3218/*
3219 * extended beacon time format
3220 * time in usec will be changed into a 32-bit value in 8:24 format
3221 * the high 1 byte is the beacon counts
3222 * the lower 3 bytes is the time in usec within one beacon interval
3223 */
3224
3225static u32 iwl_usecs_to_beacons(u32 usec, u32 beacon_interval)
3226{
3227 u32 quot;
3228 u32 rem;
3229 u32 interval = beacon_interval * 1024;
3230
3231 if (!interval || !usec)
3232 return 0;
3233
3234 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
3235 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
3236
3237 return (quot << 24) + rem;
3238}
3239
3240/* base is usually what we get from ucode with each received frame,
3241 * the same as HW timer counter counting down
3242 */
3243
3244static __le32 iwl_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
3245{
3246 u32 base_low = base & BEACON_TIME_MASK_LOW;
3247 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
3248 u32 interval = beacon_interval * TIME_UNIT;
3249 u32 res = (base & BEACON_TIME_MASK_HIGH) +
3250 (addon & BEACON_TIME_MASK_HIGH);
3251
3252 if (base_low > addon_low)
3253 res += base_low - addon_low;
3254 else if (base_low < addon_low) {
3255 res += interval + base_low - addon_low;
3256 res += (1 << 24);
3257 } else
3258 res += (1 << 24);
3259
3260 return cpu_to_le32(res);
3261}
3262
3263static int iwl_get_measurement(struct iwl_priv *priv,
3264 struct ieee80211_measurement_params *params,
3265 u8 type)
3266{
3267 struct iwl_spectrum_cmd spectrum;
3268 struct iwl_rx_packet *res;
3269 struct iwl_host_cmd cmd = {
3270 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
3271 .data = (void *)&spectrum,
3272 .meta.flags = CMD_WANT_SKB,
3273 };
3274 u32 add_time = le64_to_cpu(params->start_time);
3275 int rc;
3276 int spectrum_resp_status;
3277 int duration = le16_to_cpu(params->duration);
3278
3279 if (iwl_is_associated(priv))
3280 add_time =
3281 iwl_usecs_to_beacons(
3282 le64_to_cpu(params->start_time) - priv->last_tsf,
3283 le16_to_cpu(priv->rxon_timing.beacon_interval));
3284
3285 memset(&spectrum, 0, sizeof(spectrum));
3286
3287 spectrum.channel_count = cpu_to_le16(1);
3288 spectrum.flags =
3289 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
3290 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
3291 cmd.len = sizeof(spectrum);
3292 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
3293
3294 if (iwl_is_associated(priv))
3295 spectrum.start_time =
3296 iwl_add_beacon_time(priv->last_beacon_time,
3297 add_time,
3298 le16_to_cpu(priv->rxon_timing.beacon_interval));
3299 else
3300 spectrum.start_time = 0;
3301
3302 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
3303 spectrum.channels[0].channel = params->channel;
3304 spectrum.channels[0].type = type;
3305 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
3306 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
3307 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
3308
3309 rc = iwl_send_cmd_sync(priv, &cmd);
3310 if (rc)
3311 return rc;
3312
3313 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
3314 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
3315 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
3316 rc = -EIO;
3317 }
3318
3319 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
3320 switch (spectrum_resp_status) {
3321 case 0: /* Command will be handled */
3322 if (res->u.spectrum.id != 0xff) {
3323 IWL_DEBUG_INFO
3324 ("Replaced existing measurement: %d\n",
3325 res->u.spectrum.id);
3326 priv->measurement_status &= ~MEASUREMENT_READY;
3327 }
3328 priv->measurement_status |= MEASUREMENT_ACTIVE;
3329 rc = 0;
3330 break;
3331
3332 case 1: /* Command will not be handled */
3333 rc = -EAGAIN;
3334 break;
3335 }
3336
3337 dev_kfree_skb_any(cmd.meta.u.skb);
3338
3339 return rc;
3340}
3341#endif
3342
3343static void iwl_txstatus_to_ieee(struct iwl_priv *priv,
3344 struct iwl_tx_info *tx_sta)
3345{
3346
3347 tx_sta->status.ack_signal = 0;
3348 tx_sta->status.excessive_retries = 0;
3349 tx_sta->status.queue_length = 0;
3350 tx_sta->status.queue_number = 0;
3351
3352 if (in_interrupt())
3353 ieee80211_tx_status_irqsafe(priv->hw,
3354 tx_sta->skb[0], &(tx_sta->status));
3355 else
3356 ieee80211_tx_status(priv->hw,
3357 tx_sta->skb[0], &(tx_sta->status));
3358
3359 tx_sta->skb[0] = NULL;
3360}
3361
3362/**
3363 * iwl_tx_queue_reclaim - Reclaim Tx queue entries no more used by NIC.
3364 *
3365 * When FW advances 'R' index, all entries between old and
3366 * new 'R' index need to be reclaimed. As result, some free space
3367 * forms. If there is enough free space (> low mark), wake Tx queue.
3368 */
3369int iwl_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
3370{
3371 struct iwl_tx_queue *txq = &priv->txq[txq_id];
3372 struct iwl_queue *q = &txq->q;
3373 int nfreed = 0;
3374
3375 if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
3376 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3377 "is out of range [0-%d] %d %d.\n", txq_id,
3378 index, q->n_bd, q->first_empty, q->last_used);
3379 return 0;
3380 }
3381
3382 for (index = iwl_queue_inc_wrap(index, q->n_bd);
3383 q->last_used != index;
3384 q->last_used = iwl_queue_inc_wrap(q->last_used, q->n_bd)) {
3385 if (txq_id != IWL_CMD_QUEUE_NUM) {
3386 iwl_txstatus_to_ieee(priv,
3387 &(txq->txb[txq->q.last_used]));
3388 iwl_hw_txq_free_tfd(priv, txq);
3389 } else if (nfreed > 1) {
3390 IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
3391 q->first_empty, q->last_used);
3392 queue_work(priv->workqueue, &priv->restart);
3393 }
3394 nfreed++;
3395 }
3396
3397 if (iwl_queue_space(q) > q->low_mark && (txq_id >= 0) &&
3398 (txq_id != IWL_CMD_QUEUE_NUM) &&
3399 priv->mac80211_registered)
3400 ieee80211_wake_queue(priv->hw, txq_id);
3401
3402
3403 return nfreed;
3404}
3405
3406static int iwl_is_tx_success(u32 status)
3407{
3408 return (status & 0xFF) == 0x1;
3409}
3410
3411/******************************************************************************
3412 *
3413 * Generic RX handler implementations
3414 *
3415 ******************************************************************************/
3416static void iwl_rx_reply_tx(struct iwl_priv *priv,
3417 struct iwl_rx_mem_buffer *rxb)
3418{
3419 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3420 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3421 int txq_id = SEQ_TO_QUEUE(sequence);
3422 int index = SEQ_TO_INDEX(sequence);
3423 struct iwl_tx_queue *txq = &priv->txq[txq_id];
3424 struct ieee80211_tx_status *tx_status;
3425 struct iwl_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
3426 u32 status = le32_to_cpu(tx_resp->status);
3427
3428 if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
3429 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3430 "is out of range [0-%d] %d %d\n", txq_id,
3431 index, txq->q.n_bd, txq->q.first_empty,
3432 txq->q.last_used);
3433 return;
3434 }
3435
3436 tx_status = &(txq->txb[txq->q.last_used].status);
3437
3438 tx_status->retry_count = tx_resp->failure_frame;
3439 tx_status->queue_number = status;
3440 tx_status->queue_length = tx_resp->bt_kill_count;
3441 tx_status->queue_length |= tx_resp->failure_rts;
3442
3443 tx_status->flags =
3444 iwl_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
3445
3446 tx_status->control.tx_rate = iwl_rate_index_from_plcp(tx_resp->rate);
3447
3448 IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) plcp rate %d retries %d\n",
3449 txq_id, iwl_get_tx_fail_reason(status), status,
3450 tx_resp->rate, tx_resp->failure_frame);
3451
3452 IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
3453 if (index != -1)
3454 iwl_tx_queue_reclaim(priv, txq_id, index);
3455
3456 if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
3457 IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n");
3458}
3459
3460
3461static void iwl_rx_reply_alive(struct iwl_priv *priv,
3462 struct iwl_rx_mem_buffer *rxb)
3463{
3464 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3465 struct iwl_alive_resp *palive;
3466 struct delayed_work *pwork;
3467
3468 palive = &pkt->u.alive_frame;
3469
3470 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3471 "0x%01X 0x%01X\n",
3472 palive->is_valid, palive->ver_type,
3473 palive->ver_subtype);
3474
3475 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3476 IWL_DEBUG_INFO("Initialization Alive received.\n");
3477 memcpy(&priv->card_alive_init,
3478 &pkt->u.alive_frame,
3479 sizeof(struct iwl_init_alive_resp));
3480 pwork = &priv->init_alive_start;
3481 } else {
3482 IWL_DEBUG_INFO("Runtime Alive received.\n");
3483 memcpy(&priv->card_alive, &pkt->u.alive_frame,
3484 sizeof(struct iwl_alive_resp));
3485 pwork = &priv->alive_start;
3486 iwl_disable_events(priv);
3487 }
3488
3489 /* We delay the ALIVE response by 5ms to
3490 * give the HW RF Kill time to activate... */
3491 if (palive->is_valid == UCODE_VALID_OK)
3492 queue_delayed_work(priv->workqueue, pwork,
3493 msecs_to_jiffies(5));
3494 else
3495 IWL_WARNING("uCode did not respond OK.\n");
3496}
3497
3498static void iwl_rx_reply_add_sta(struct iwl_priv *priv,
3499 struct iwl_rx_mem_buffer *rxb)
3500{
3501 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3502
3503 IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3504 return;
3505}
3506
3507static void iwl_rx_reply_error(struct iwl_priv *priv,
3508 struct iwl_rx_mem_buffer *rxb)
3509{
3510 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3511
3512 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3513 "seq 0x%04X ser 0x%08X\n",
3514 le32_to_cpu(pkt->u.err_resp.error_type),
3515 get_cmd_string(pkt->u.err_resp.cmd_id),
3516 pkt->u.err_resp.cmd_id,
3517 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3518 le32_to_cpu(pkt->u.err_resp.error_info));
3519}
3520
3521#define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3522
3523static void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
3524{
3525 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3526 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
3527 struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
3528 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3529 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3530 rxon->channel = csa->channel;
3531 priv->staging_rxon.channel = csa->channel;
3532}
3533
3534static void iwl_rx_spectrum_measure_notif(struct iwl_priv *priv,
3535 struct iwl_rx_mem_buffer *rxb)
3536{
3537#ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
3538 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3539 struct iwl_spectrum_notification *report = &(pkt->u.spectrum_notif);
3540
3541 if (!report->state) {
3542 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3543 "Spectrum Measure Notification: Start\n");
3544 return;
3545 }
3546
3547 memcpy(&priv->measure_report, report, sizeof(*report));
3548 priv->measurement_status |= MEASUREMENT_READY;
3549#endif
3550}
3551
3552static void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
3553 struct iwl_rx_mem_buffer *rxb)
3554{
3555#ifdef CONFIG_IWLWIFI_DEBUG
3556 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3557 struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
3558 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3559 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3560#endif
3561}
3562
3563static void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
3564 struct iwl_rx_mem_buffer *rxb)
3565{
3566 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3567 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3568 "notification for %s:\n",
3569 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3570 iwl_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3571}
3572
3573static void iwl_bg_beacon_update(struct work_struct *work)
3574{
3575 struct iwl_priv *priv =
3576 container_of(work, struct iwl_priv, beacon_update);
3577 struct sk_buff *beacon;
3578
3579 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3580 beacon = ieee80211_beacon_get(priv->hw, priv->interface_id, NULL);
3581
3582 if (!beacon) {
3583 IWL_ERROR("update beacon failed\n");
3584 return;
3585 }
3586
3587 mutex_lock(&priv->mutex);
3588 /* new beacon skb is allocated every time; dispose previous.*/
3589 if (priv->ibss_beacon)
3590 dev_kfree_skb(priv->ibss_beacon);
3591
3592 priv->ibss_beacon = beacon;
3593 mutex_unlock(&priv->mutex);
3594
3595 iwl_send_beacon_cmd(priv);
3596}
3597
3598static void iwl_rx_beacon_notif(struct iwl_priv *priv,
3599 struct iwl_rx_mem_buffer *rxb)
3600{
3601#ifdef CONFIG_IWLWIFI_DEBUG
3602 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3603 struct iwl_beacon_notif *beacon = &(pkt->u.beacon_status);
3604 u8 rate = beacon->beacon_notify_hdr.rate;
3605
3606 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3607 "tsf %d %d rate %d\n",
3608 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3609 beacon->beacon_notify_hdr.failure_frame,
3610 le32_to_cpu(beacon->ibss_mgr_status),
3611 le32_to_cpu(beacon->high_tsf),
3612 le32_to_cpu(beacon->low_tsf), rate);
3613#endif
3614
3615 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3616 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3617 queue_work(priv->workqueue, &priv->beacon_update);
3618}
3619
3620/* Service response to REPLY_SCAN_CMD (0x80) */
3621static void iwl_rx_reply_scan(struct iwl_priv *priv,
3622 struct iwl_rx_mem_buffer *rxb)
3623{
3624#ifdef CONFIG_IWLWIFI_DEBUG
3625 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3626 struct iwl_scanreq_notification *notif =
3627 (struct iwl_scanreq_notification *)pkt->u.raw;
3628
3629 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3630#endif
3631}
3632
3633/* Service SCAN_START_NOTIFICATION (0x82) */
3634static void iwl_rx_scan_start_notif(struct iwl_priv *priv,
3635 struct iwl_rx_mem_buffer *rxb)
3636{
3637 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3638 struct iwl_scanstart_notification *notif =
3639 (struct iwl_scanstart_notification *)pkt->u.raw;
3640 priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3641 IWL_DEBUG_SCAN("Scan start: "
3642 "%d [802.11%s] "
3643 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3644 notif->channel,
3645 notif->band ? "bg" : "a",
3646 notif->tsf_high,
3647 notif->tsf_low, notif->status, notif->beacon_timer);
3648}
3649
3650/* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3651static void iwl_rx_scan_results_notif(struct iwl_priv *priv,
3652 struct iwl_rx_mem_buffer *rxb)
3653{
3654 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3655 struct iwl_scanresults_notification *notif =
3656 (struct iwl_scanresults_notification *)pkt->u.raw;
3657
3658 IWL_DEBUG_SCAN("Scan ch.res: "
3659 "%d [802.11%s] "
3660 "(TSF: 0x%08X:%08X) - %d "
3661 "elapsed=%lu usec (%dms since last)\n",
3662 notif->channel,
3663 notif->band ? "bg" : "a",
3664 le32_to_cpu(notif->tsf_high),
3665 le32_to_cpu(notif->tsf_low),
3666 le32_to_cpu(notif->statistics[0]),
3667 le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3668 jiffies_to_msecs(elapsed_jiffies
3669 (priv->last_scan_jiffies, jiffies)));
3670
3671 priv->last_scan_jiffies = jiffies;
3672}
3673
3674/* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3675static void iwl_rx_scan_complete_notif(struct iwl_priv *priv,
3676 struct iwl_rx_mem_buffer *rxb)
3677{
3678 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3679 struct iwl_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
3680
3681 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3682 scan_notif->scanned_channels,
3683 scan_notif->tsf_low,
3684 scan_notif->tsf_high, scan_notif->status);
3685
3686 /* The HW is no longer scanning */
3687 clear_bit(STATUS_SCAN_HW, &priv->status);
3688
3689 /* The scan completion notification came in, so kill that timer... */
3690 cancel_delayed_work(&priv->scan_check);
3691
3692 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3693 (priv->scan_bands == 2) ? "2.4" : "5.2",
3694 jiffies_to_msecs(elapsed_jiffies
3695 (priv->scan_pass_start, jiffies)));
3696
3697 /* Remove this scanned band from the list
3698 * of pending bands to scan */
3699 priv->scan_bands--;
3700
3701 /* If a request to abort was given, or the scan did not succeed
3702 * then we reset the scan state machine and terminate,
3703 * re-queuing another scan if one has been requested */
3704 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3705 IWL_DEBUG_INFO("Aborted scan completed.\n");
3706 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3707 } else {
3708 /* If there are more bands on this scan pass reschedule */
3709 if (priv->scan_bands > 0)
3710 goto reschedule;
3711 }
3712
3713 priv->last_scan_jiffies = jiffies;
3714 IWL_DEBUG_INFO("Setting scan to off\n");
3715
3716 clear_bit(STATUS_SCANNING, &priv->status);
3717
3718 IWL_DEBUG_INFO("Scan took %dms\n",
3719 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
3720
3721 queue_work(priv->workqueue, &priv->scan_completed);
3722
3723 return;
3724
3725reschedule:
3726 priv->scan_pass_start = jiffies;
3727 queue_work(priv->workqueue, &priv->request_scan);
3728}
3729
3730/* Handle notification from uCode that card's power state is changing
3731 * due to software, hardware, or critical temperature RFKILL */
3732static void iwl_rx_card_state_notif(struct iwl_priv *priv,
3733 struct iwl_rx_mem_buffer *rxb)
3734{
3735 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3736 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
3737 unsigned long status = priv->status;
3738
3739 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
3740 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
3741 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
3742
3743 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
3744 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3745
3746 if (flags & HW_CARD_DISABLED)
3747 set_bit(STATUS_RF_KILL_HW, &priv->status);
3748 else
3749 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3750
3751
3752 if (flags & SW_CARD_DISABLED)
3753 set_bit(STATUS_RF_KILL_SW, &priv->status);
3754 else
3755 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3756
3757 iwl_scan_cancel(priv);
3758
3759 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
3760 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
3761 (test_bit(STATUS_RF_KILL_SW, &status) !=
3762 test_bit(STATUS_RF_KILL_SW, &priv->status)))
3763 queue_work(priv->workqueue, &priv->rf_kill);
3764 else
3765 wake_up_interruptible(&priv->wait_command_queue);
3766}
3767
3768/**
3769 * iwl_setup_rx_handlers - Initialize Rx handler callbacks
3770 *
3771 * Setup the RX handlers for each of the reply types sent from the uCode
3772 * to the host.
3773 *
3774 * This function chains into the hardware specific files for them to setup
3775 * any hardware specific handlers as well.
3776 */
3777static void iwl_setup_rx_handlers(struct iwl_priv *priv)
3778{
3779 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
3780 priv->rx_handlers[REPLY_ADD_STA] = iwl_rx_reply_add_sta;
3781 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
3782 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
3783 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
3784 iwl_rx_spectrum_measure_notif;
3785 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
3786 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
3787 iwl_rx_pm_debug_statistics_notif;
3788 priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
3789
3790 /* NOTE: iwl_rx_statistics is different based on whether
3791 * the build is for the 3945 or the 4965. See the
3792 * corresponding implementation in iwl-XXXX.c
3793 *
3794 * The same handler is used for both the REPLY to a
3795 * discrete statistics request from the host as well as
3796 * for the periodic statistics notification from the uCode
3797 */
3798 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_hw_rx_statistics;
3799 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_hw_rx_statistics;
3800
3801 priv->rx_handlers[REPLY_SCAN_CMD] = iwl_rx_reply_scan;
3802 priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl_rx_scan_start_notif;
3803 priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
3804 iwl_rx_scan_results_notif;
3805 priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
3806 iwl_rx_scan_complete_notif;
3807 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
3808 priv->rx_handlers[REPLY_TX] = iwl_rx_reply_tx;
3809
3810 /* Setup hardware specific Rx handlers */
3811 iwl_hw_rx_handler_setup(priv);
3812}
3813
3814/**
3815 * iwl_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3816 * @rxb: Rx buffer to reclaim
3817 *
3818 * If an Rx buffer has an async callback associated with it the callback
3819 * will be executed. The attached skb (if present) will only be freed
3820 * if the callback returns 1
3821 */
3822static void iwl_tx_cmd_complete(struct iwl_priv *priv,
3823 struct iwl_rx_mem_buffer *rxb)
3824{
3825 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
3826 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3827 int txq_id = SEQ_TO_QUEUE(sequence);
3828 int index = SEQ_TO_INDEX(sequence);
3829 int huge = sequence & SEQ_HUGE_FRAME;
3830 int cmd_index;
3831 struct iwl_cmd *cmd;
3832
3833 /* If a Tx command is being handled and it isn't in the actual
3834 * command queue then there a command routing bug has been introduced
3835 * in the queue management code. */
3836 if (txq_id != IWL_CMD_QUEUE_NUM)
3837 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
3838 txq_id, pkt->hdr.cmd);
3839 BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
3840
3841 cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
3842 cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
3843
3844 /* Input error checking is done when commands are added to queue. */
3845 if (cmd->meta.flags & CMD_WANT_SKB) {
3846 cmd->meta.source->u.skb = rxb->skb;
3847 rxb->skb = NULL;
3848 } else if (cmd->meta.u.callback &&
3849 !cmd->meta.u.callback(priv, cmd, rxb->skb))
3850 rxb->skb = NULL;
3851
3852 iwl_tx_queue_reclaim(priv, txq_id, index);
3853
3854 if (!(cmd->meta.flags & CMD_ASYNC)) {
3855 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3856 wake_up_interruptible(&priv->wait_command_queue);
3857 }
3858}
3859
3860/************************** RX-FUNCTIONS ****************************/
3861/*
3862 * Rx theory of operation
3863 *
3864 * The host allocates 32 DMA target addresses and passes the host address
3865 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
3866 * 0 to 31
3867 *
3868 * Rx Queue Indexes
3869 * The host/firmware share two index registers for managing the Rx buffers.
3870 *
3871 * The READ index maps to the first position that the firmware may be writing
3872 * to -- the driver can read up to (but not including) this position and get
3873 * good data.
3874 * The READ index is managed by the firmware once the card is enabled.
3875 *
3876 * The WRITE index maps to the last position the driver has read from -- the
3877 * position preceding WRITE is the last slot the firmware can place a packet.
3878 *
3879 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
3880 * WRITE = READ.
3881 *
3882 * During initialization the host sets up the READ queue position to the first
3883 * INDEX position, and WRITE to the last (READ - 1 wrapped)
3884 *
3885 * When the firmware places a packet in a buffer it will advance the READ index
3886 * and fire the RX interrupt. The driver can then query the READ index and
3887 * process as many packets as possible, moving the WRITE index forward as it
3888 * resets the Rx queue buffers with new memory.
3889 *
3890 * The management in the driver is as follows:
3891 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
3892 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
01ebd063 3893 * to replenish the iwl->rxq->rx_free.
b481de9c
ZY		 3894 * + In iwl_rx_replenish (scheduled) if 'processed' != 'read' then the
3895 * iwl->rxq is replenished and the READ INDEX is updated (updating the
3896 * 'processed' and 'read' driver indexes as well)
3897 * + A received packet is processed and handed to the kernel network stack,
3898 * detached from the iwl->rxq. The driver 'processed' index is updated.
3899 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
3900 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
3901 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
3902 * were enough free buffers and RX_STALLED is set it is cleared.
3903 *
3904 *
3905 * Driver sequence:
3906 *
3907 * iwl_rx_queue_alloc() Allocates rx_free
3908 * iwl_rx_replenish() Replenishes rx_free list from rx_used, and calls
3909 * iwl_rx_queue_restock
3910 * iwl_rx_queue_restock() Moves available buffers from rx_free into Rx
3911 * queue, updates firmware pointers, and updates
3912 * the WRITE index. If insufficient rx_free buffers
3913 * are available, schedules iwl_rx_replenish
3914 *
3915 * -- enable interrupts --
3916 * ISR - iwl_rx() Detach iwl_rx_mem_buffers from pool up to the
3917 * READ INDEX, detaching the SKB from the pool.
3918 * Moves the packet buffer from queue to rx_used.
3919 * Calls iwl_rx_queue_restock to refill any empty
3920 * slots.
3921 * ...
3922 *
3923 */
3924
3925/**
3926 * iwl_rx_queue_space - Return number of free slots available in queue.
3927 */
3928static int iwl_rx_queue_space(const struct iwl_rx_queue *q)
3929{
3930 int s = q->read - q->write;
3931 if (s <= 0)
3932 s += RX_QUEUE_SIZE;
3933 /* keep some buffer to not confuse full and empty queue */
3934 s -= 2;
3935 if (s < 0)
3936 s = 0;
3937 return s;
3938}
3939
3940/**
3941 * iwl_rx_queue_update_write_ptr - Update the write pointer for the RX queue
3942 *
3943 * NOTE: This function has 3945 and 4965 specific code sections
3944 * but is declared in base due to the majority of the
3945 * implementation being the same (only a numeric constant is
3946 * different)
3947 *
3948 */
3949int iwl_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl_rx_queue *q)
3950{
3951 u32 reg = 0;
3952 int rc = 0;
3953 unsigned long flags;
3954
3955 spin_lock_irqsave(&q->lock, flags);
3956
3957 if (q->need_update == 0)
3958 goto exit_unlock;
3959
3960 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3961 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
3962
3963 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3964 iwl_set_bit(priv, CSR_GP_CNTRL,
3965 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3966 goto exit_unlock;
3967 }
3968
3969 rc = iwl_grab_restricted_access(priv);
3970 if (rc)
3971 goto exit_unlock;
3972
3973 iwl_write_restricted(priv, FH_RSCSR_CHNL0_WPTR,
3974 q->write & ~0x7);
3975 iwl_release_restricted_access(priv);
3976 } else
3977 iwl_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
3978
3979
3980 q->need_update = 0;
3981
3982 exit_unlock:
3983 spin_unlock_irqrestore(&q->lock, flags);
3984 return rc;
3985}
3986
3987/**
3988 * iwl_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer pointer.
3989 *
3990 * NOTE: This function has 3945 and 4965 specific code paths in it.
3991 */
3992static inline __le32 iwl_dma_addr2rbd_ptr(struct iwl_priv *priv,
3993 dma_addr_t dma_addr)
3994{
3995 return cpu_to_le32((u32)dma_addr);
3996}
3997
3998/**
3999 * iwl_rx_queue_restock - refill RX queue from pre-allocated pool
4000 *
4001 * If there are slots in the RX queue that need to be restocked,
4002 * and we have free pre-allocated buffers, fill the ranks as much
4003 * as we can pulling from rx_free.
4004 *
4005 * This moves the 'write' index forward to catch up with 'processed', and
4006 * also updates the memory address in the firmware to reference the new
4007 * target buffer.
4008 */
4009int iwl_rx_queue_restock(struct iwl_priv *priv)
4010{
4011 struct iwl_rx_queue *rxq = &priv->rxq;
4012 struct list_head *element;
4013 struct iwl_rx_mem_buffer *rxb;
4014 unsigned long flags;
4015 int write, rc;
4016
4017 spin_lock_irqsave(&rxq->lock, flags);
4018 write = rxq->write & ~0x7;
4019 while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
4020 element = rxq->rx_free.next;
4021 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
4022 list_del(element);
4023 rxq->bd[rxq->write] = iwl_dma_addr2rbd_ptr(priv, rxb->dma_addr);
4024 rxq->queue[rxq->write] = rxb;
4025 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
4026 rxq->free_count--;
4027 }
4028 spin_unlock_irqrestore(&rxq->lock, flags);
4029 /* If the pre-allocated buffer pool is dropping low, schedule to
4030 * refill it */
4031 if (rxq->free_count <= RX_LOW_WATERMARK)
4032 queue_work(priv->workqueue, &priv->rx_replenish);
4033
4034
4035 /* If we've added more space for the firmware to place data, tell it */
4036 if ((write != (rxq->write & ~0x7))
4037 || (abs(rxq->write - rxq->read) > 7)) {
4038 spin_lock_irqsave(&rxq->lock, flags);
4039 rxq->need_update = 1;
4040 spin_unlock_irqrestore(&rxq->lock, flags);
4041 rc = iwl_rx_queue_update_write_ptr(priv, rxq);
4042 if (rc)
4043 return rc;
4044 }
4045
4046 return 0;
4047}
4048
4049/**
01ebd063 4050 * iwl_rx_replenish - Move all used packet from rx_used to rx_free
b481de9c
ZY		 4051 *
4052 * When moving to rx_free an SKB is allocated for the slot.
4053 *
4054 * Also restock the Rx queue via iwl_rx_queue_restock.
01ebd063 4055 * This is called as a scheduled work item (except for during initialization)
b481de9c
ZY		 4056 */
4057void iwl_rx_replenish(void *data)
4058{
4059 struct iwl_priv *priv = data;
4060 struct iwl_rx_queue *rxq = &priv->rxq;
4061 struct list_head *element;
4062 struct iwl_rx_mem_buffer *rxb;
4063 unsigned long flags;
4064 spin_lock_irqsave(&rxq->lock, flags);
4065 while (!list_empty(&rxq->rx_used)) {
4066 element = rxq->rx_used.next;
4067 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
4068 rxb->skb =
4069 alloc_skb(IWL_RX_BUF_SIZE, __GFP_NOWARN | GFP_ATOMIC);
4070 if (!rxb->skb) {
4071 if (net_ratelimit())
4072 printk(KERN_CRIT DRV_NAME
4073 ": Can not allocate SKB buffers\n");
4074 /* We don't reschedule replenish work here -- we will
4075 * call the restock method and if it still needs
4076 * more buffers it will schedule replenish */
4077 break;
4078 }
4079 priv->alloc_rxb_skb++;
4080 list_del(element);
4081 rxb->dma_addr =
4082 pci_map_single(priv->pci_dev, rxb->skb->data,
4083 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4084 list_add_tail(&rxb->list, &rxq->rx_free);
4085 rxq->free_count++;
4086 }
4087 spin_unlock_irqrestore(&rxq->lock, flags);
4088
4089 spin_lock_irqsave(&priv->lock, flags);
4090 iwl_rx_queue_restock(priv);
4091 spin_unlock_irqrestore(&priv->lock, flags);
4092}
4093
4094/* Assumes that the skb field of the buffers in 'pool' is kept accurate.
4095 * If an SKB has been detached, the POOL needs to have it's SKB set to NULL
4096 * This free routine walks the list of POOL entries and if SKB is set to
4097 * non NULL it is unmapped and freed
4098 */
4099void iwl_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
4100{
4101 int i;
4102 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
4103 if (rxq->pool[i].skb != NULL) {
4104 pci_unmap_single(priv->pci_dev,
4105 rxq->pool[i].dma_addr,
4106 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4107 dev_kfree_skb(rxq->pool[i].skb);
4108 }
4109 }
4110
4111 pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
4112 rxq->dma_addr);
4113 rxq->bd = NULL;
4114}
4115
4116int iwl_rx_queue_alloc(struct iwl_priv *priv)
4117{
4118 struct iwl_rx_queue *rxq = &priv->rxq;
4119 struct pci_dev *dev = priv->pci_dev;
4120 int i;
4121
4122 spin_lock_init(&rxq->lock);
4123 INIT_LIST_HEAD(&rxq->rx_free);
4124 INIT_LIST_HEAD(&rxq->rx_used);
4125 rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
4126 if (!rxq->bd)
4127 return -ENOMEM;
4128 /* Fill the rx_used queue with _all_ of the Rx buffers */
4129 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
4130 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4131 /* Set us so that we have processed and used all buffers, but have
4132 * not restocked the Rx queue with fresh buffers */
4133 rxq->read = rxq->write = 0;
4134 rxq->free_count = 0;
4135 rxq->need_update = 0;
4136 return 0;
4137}
4138
4139void iwl_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
4140{
4141 unsigned long flags;
4142 int i;
4143 spin_lock_irqsave(&rxq->lock, flags);
4144 INIT_LIST_HEAD(&rxq->rx_free);
4145 INIT_LIST_HEAD(&rxq->rx_used);
4146 /* Fill the rx_used queue with _all_ of the Rx buffers */
4147 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
4148 /* In the reset function, these buffers may have been allocated
4149 * to an SKB, so we need to unmap and free potential storage */
4150 if (rxq->pool[i].skb != NULL) {
4151 pci_unmap_single(priv->pci_dev,
4152 rxq->pool[i].dma_addr,
4153 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4154 priv->alloc_rxb_skb--;
4155 dev_kfree_skb(rxq->pool[i].skb);
4156 rxq->pool[i].skb = NULL;
4157 }
4158 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4159 }
4160
4161 /* Set us so that we have processed and used all buffers, but have
4162 * not restocked the Rx queue with fresh buffers */
4163 rxq->read = rxq->write = 0;
4164 rxq->free_count = 0;
4165 spin_unlock_irqrestore(&rxq->lock, flags);
4166}
4167
4168/* Convert linear signal-to-noise ratio into dB */
4169static u8 ratio2dB[100] = {
4170/* 0 1 2 3 4 5 6 7 8 9 */
4171 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
4172 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
4173 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
4174 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
4175 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
4176 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
4177 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
4178 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
4179 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
4180 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
4181};
4182
4183/* Calculates a relative dB value from a ratio of linear
4184 * (i.e. not dB) signal levels.
4185 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4186int iwl_calc_db_from_ratio(int sig_ratio)
4187{
4188 /* Anything above 1000:1 just report as 60 dB */
4189 if (sig_ratio > 1000)
4190 return 60;
4191
4192 /* Above 100:1, divide by 10 and use table,
4193 * add 20 dB to make up for divide by 10 */
4194 if (sig_ratio > 100)
4195 return (20 + (int)ratio2dB[sig_ratio/10]);
4196
4197 /* We shouldn't see this */
4198 if (sig_ratio < 1)
4199 return 0;
4200
4201 /* Use table for ratios 1:1 - 99:1 */
4202 return (int)ratio2dB[sig_ratio];
4203}
4204
4205#define PERFECT_RSSI (-20) /* dBm */
4206#define WORST_RSSI (-95) /* dBm */
4207#define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4208
4209/* Calculate an indication of rx signal quality (a percentage, not dBm!).
4210 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4211 * about formulas used below. */
4212int iwl_calc_sig_qual(int rssi_dbm, int noise_dbm)
4213{
4214 int sig_qual;
4215 int degradation = PERFECT_RSSI - rssi_dbm;
4216
4217 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
4218 * as indicator; formula is (signal dbm - noise dbm).
4219 * SNR at or above 40 is a great signal (100%).
4220 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4221 * Weakest usable signal is usually 10 - 15 dB SNR. */
4222 if (noise_dbm) {
4223 if (rssi_dbm - noise_dbm >= 40)
4224 return 100;
4225 else if (rssi_dbm < noise_dbm)
4226 return 0;
4227 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
4228
4229 /* Else use just the signal level.
4230 * This formula is a least squares fit of data points collected and
4231 * compared with a reference system that had a percentage (%) display
4232 * for signal quality. */
4233 } else
4234 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
4235 (15 * RSSI_RANGE + 62 * degradation)) /
4236 (RSSI_RANGE * RSSI_RANGE);
4237
4238 if (sig_qual > 100)
4239 sig_qual = 100;
4240 else if (sig_qual < 1)
4241 sig_qual = 0;
4242
4243 return sig_qual;
4244}
4245
4246/**
4247 * iwl_rx_handle - Main entry function for receiving responses from the uCode
4248 *
4249 * Uses the priv->rx_handlers callback function array to invoke
4250 * the appropriate handlers, including command responses,
4251 * frame-received notifications, and other notifications.
4252 */
4253static void iwl_rx_handle(struct iwl_priv *priv)
4254{
4255 struct iwl_rx_mem_buffer *rxb;
4256 struct iwl_rx_packet *pkt;
4257 struct iwl_rx_queue *rxq = &priv->rxq;
4258 u32 r, i;
4259 int reclaim;
4260 unsigned long flags;
4261
4262 r = iwl_hw_get_rx_read(priv);
4263 i = rxq->read;
4264
4265 /* Rx interrupt, but nothing sent from uCode */
4266 if (i == r)
4267 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
4268
4269 while (i != r) {
4270 rxb = rxq->queue[i];
4271
4272 /* If an RXB doesn't have a queue slot associated with it
4273 * then a bug has been introduced in the queue refilling
4274 * routines -- catch it here */
4275 BUG_ON(rxb == NULL);
4276
4277 rxq->queue[i] = NULL;
4278
4279 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
4280 IWL_RX_BUF_SIZE,
4281 PCI_DMA_FROMDEVICE);
4282 pkt = (struct iwl_rx_packet *)rxb->skb->data;
4283
4284 /* Reclaim a command buffer only if this packet is a response
4285 * to a (driver-originated) command.
4286 * If the packet (e.g. Rx frame) originated from uCode,
4287 * there is no command buffer to reclaim.
4288 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4289 * but apparently a few don't get set; catch them here. */
4290 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
4291 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
4292 (pkt->hdr.cmd != REPLY_TX);
4293
4294 /* Based on type of command response or notification,
4295 * handle those that need handling via function in
4296 * rx_handlers table. See iwl_setup_rx_handlers() */
4297 if (priv->rx_handlers[pkt->hdr.cmd]) {
4298 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4299 "r = %d, i = %d, %s, 0x%02x\n", r, i,
4300 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
4301 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
4302 } else {
4303 /* No handling needed */
4304 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4305 "r %d i %d No handler needed for %s, 0x%02x\n",
4306 r, i, get_cmd_string(pkt->hdr.cmd),
4307 pkt->hdr.cmd);
4308 }
4309
4310 if (reclaim) {
4311 /* Invoke any callbacks, transfer the skb to caller,
4312 * and fire off the (possibly) blocking iwl_send_cmd()
4313 * as we reclaim the driver command queue */
4314 if (rxb && rxb->skb)
4315 iwl_tx_cmd_complete(priv, rxb);
4316 else
4317 IWL_WARNING("Claim null rxb?\n");
4318 }
4319
4320 /* For now we just don't re-use anything. We can tweak this
4321 * later to try and re-use notification packets and SKBs that
4322 * fail to Rx correctly */
4323 if (rxb->skb != NULL) {
4324 priv->alloc_rxb_skb--;
4325 dev_kfree_skb_any(rxb->skb);
4326 rxb->skb = NULL;
4327 }
4328
4329 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
4330 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4331 spin_lock_irqsave(&rxq->lock, flags);
4332 list_add_tail(&rxb->list, &priv->rxq.rx_used);
4333 spin_unlock_irqrestore(&rxq->lock, flags);
4334 i = (i + 1) & RX_QUEUE_MASK;
4335 }
4336
4337 /* Backtrack one entry */
4338 priv->rxq.read = i;
4339 iwl_rx_queue_restock(priv);
4340}
4341
4342int iwl_tx_queue_update_write_ptr(struct iwl_priv *priv,
4343 struct iwl_tx_queue *txq)
4344{
4345 u32 reg = 0;
4346 int rc = 0;
4347 int txq_id = txq->q.id;
4348
4349 if (txq->need_update == 0)
4350 return rc;
4351
4352 /* if we're trying to save power */
4353 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4354 /* wake up nic if it's powered down ...
4355 * uCode will wake up, and interrupt us again, so next
4356 * time we'll skip this part. */
4357 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
4358
4359 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4360 IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4361 iwl_set_bit(priv, CSR_GP_CNTRL,
4362 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4363 return rc;
4364 }
4365
4366 /* restore this queue's parameters in nic hardware. */
4367 rc = iwl_grab_restricted_access(priv);
4368 if (rc)
4369 return rc;
4370 iwl_write_restricted(priv, HBUS_TARG_WRPTR,
4371 txq->q.first_empty | (txq_id << 8));
4372 iwl_release_restricted_access(priv);
4373
4374 /* else not in power-save mode, uCode will never sleep when we're
4375 * trying to tx (during RFKILL, we're not trying to tx). */
4376 } else
4377 iwl_write32(priv, HBUS_TARG_WRPTR,
4378 txq->q.first_empty | (txq_id << 8));
4379
4380 txq->need_update = 0;
4381
4382 return rc;
4383}
4384
4385#ifdef CONFIG_IWLWIFI_DEBUG
4386static void iwl_print_rx_config_cmd(struct iwl_rxon_cmd *rxon)
4387{
0795af57
JP		 4388 DECLARE_MAC_BUF(mac);
4389
b481de9c
ZY		 4390 IWL_DEBUG_RADIO("RX CONFIG:\n");
4391 iwl_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4392 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4393 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4394 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4395 le32_to_cpu(rxon->filter_flags));
4396 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4397 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4398 rxon->ofdm_basic_rates);
4399 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
0795af57
JP		 4400 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4401 print_mac(mac, rxon->node_addr));
4402 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4403 print_mac(mac, rxon->bssid_addr));
b481de9c
ZY		 4404 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4405}
4406#endif
4407
4408static void iwl_enable_interrupts(struct iwl_priv *priv)
4409{
4410 IWL_DEBUG_ISR("Enabling interrupts\n");
4411 set_bit(STATUS_INT_ENABLED, &priv->status);
4412 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4413}
4414
4415static inline void iwl_disable_interrupts(struct iwl_priv *priv)
4416{
4417 clear_bit(STATUS_INT_ENABLED, &priv->status);
4418
4419 /* disable interrupts from uCode/NIC to host */
4420 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
4421
4422 /* acknowledge/clear/reset any interrupts still pending
4423 * from uCode or flow handler (Rx/Tx DMA) */
4424 iwl_write32(priv, CSR_INT, 0xffffffff);
4425 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4426 IWL_DEBUG_ISR("Disabled interrupts\n");
4427}
4428
4429static const char *desc_lookup(int i)
4430{
4431 switch (i) {
4432 case 1:
4433 return "FAIL";
4434 case 2:
4435 return "BAD_PARAM";
4436 case 3:
4437 return "BAD_CHECKSUM";
4438 case 4:
4439 return "NMI_INTERRUPT";
4440 case 5:
4441 return "SYSASSERT";
4442 case 6:
4443 return "FATAL_ERROR";
4444 }
4445
4446 return "UNKNOWN";
4447}
4448
4449#define ERROR_START_OFFSET (1 * sizeof(u32))
4450#define ERROR_ELEM_SIZE (7 * sizeof(u32))
4451
4452static void iwl_dump_nic_error_log(struct iwl_priv *priv)
4453{
4454 u32 i;
4455 u32 desc, time, count, base, data1;
4456 u32 blink1, blink2, ilink1, ilink2;
4457 int rc;
4458
4459 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4460
4461 if (!iwl_hw_valid_rtc_data_addr(base)) {
4462 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4463 return;
4464 }
4465
4466 rc = iwl_grab_restricted_access(priv);
4467 if (rc) {
4468 IWL_WARNING("Can not read from adapter at this time.\n");
4469 return;
4470 }
4471
4472 count = iwl_read_restricted_mem(priv, base);
4473
4474 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4475 IWL_ERROR("Start IWL Error Log Dump:\n");
4476 IWL_ERROR("Status: 0x%08lX, Config: %08X count: %d\n",
4477 priv->status, priv->config, count);
4478 }
4479
4480 IWL_ERROR("Desc Time asrtPC blink2 "
4481 "ilink1 nmiPC Line\n");
4482 for (i = ERROR_START_OFFSET;
4483 i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
4484 i += ERROR_ELEM_SIZE) {
4485 desc = iwl_read_restricted_mem(priv, base + i);
4486 time =
4487 iwl_read_restricted_mem(priv, base + i + 1 * sizeof(u32));
4488 blink1 =
4489 iwl_read_restricted_mem(priv, base + i + 2 * sizeof(u32));
4490 blink2 =
4491 iwl_read_restricted_mem(priv, base + i + 3 * sizeof(u32));
4492 ilink1 =
4493 iwl_read_restricted_mem(priv, base + i + 4 * sizeof(u32));
4494 ilink2 =
4495 iwl_read_restricted_mem(priv, base + i + 5 * sizeof(u32));
4496 data1 =
4497 iwl_read_restricted_mem(priv, base + i + 6 * sizeof(u32));
4498
4499 IWL_ERROR
4500 ("%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
4501 desc_lookup(desc), desc, time, blink1, blink2,
4502 ilink1, ilink2, data1);
4503 }
4504
4505 iwl_release_restricted_access(priv);
4506
4507}
4508
4509#define EVENT_START_OFFSET (4 * sizeof(u32))
4510
4511/**
4512 * iwl_print_event_log - Dump error event log to syslog
4513 *
4514 * NOTE: Must be called with iwl_grab_restricted_access() already obtained!
4515 */
4516static void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
4517 u32 num_events, u32 mode)
4518{
4519 u32 i;
4520 u32 base; /* SRAM byte address of event log header */
4521 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4522 u32 ptr; /* SRAM byte address of log data */
4523 u32 ev, time, data; /* event log data */
4524
4525 if (num_events == 0)
4526 return;
4527
4528 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4529
4530 if (mode == 0)
4531 event_size = 2 * sizeof(u32);
4532 else
4533 event_size = 3 * sizeof(u32);
4534
4535 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4536
4537 /* "time" is actually "data" for mode 0 (no timestamp).
4538 * place event id # at far right for easier visual parsing. */
4539 for (i = 0; i < num_events; i++) {
4540 ev = iwl_read_restricted_mem(priv, ptr);
4541 ptr += sizeof(u32);
4542 time = iwl_read_restricted_mem(priv, ptr);
4543 ptr += sizeof(u32);
4544 if (mode == 0)
4545 IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4546 else {
4547 data = iwl_read_restricted_mem(priv, ptr);
4548 ptr += sizeof(u32);
4549 IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4550 }
4551 }
4552}
4553
4554static void iwl_dump_nic_event_log(struct iwl_priv *priv)
4555{
4556 int rc;
4557 u32 base; /* SRAM byte address of event log header */
4558 u32 capacity; /* event log capacity in # entries */
4559 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
4560 u32 num_wraps; /* # times uCode wrapped to top of log */
4561 u32 next_entry; /* index of next entry to be written by uCode */
4562 u32 size; /* # entries that we'll print */
4563
4564 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4565 if (!iwl_hw_valid_rtc_data_addr(base)) {
4566 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4567 return;
4568 }
4569
4570 rc = iwl_grab_restricted_access(priv);
4571 if (rc) {
4572 IWL_WARNING("Can not read from adapter at this time.\n");
4573 return;
4574 }
4575
4576 /* event log header */
4577 capacity = iwl_read_restricted_mem(priv, base);
4578 mode = iwl_read_restricted_mem(priv, base + (1 * sizeof(u32)));
4579 num_wraps = iwl_read_restricted_mem(priv, base + (2 * sizeof(u32)));
4580 next_entry = iwl_read_restricted_mem(priv, base + (3 * sizeof(u32)));
4581
4582 size = num_wraps ? capacity : next_entry;
4583
4584 /* bail out if nothing in log */
4585 if (size == 0) {
583fab37 4586 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
b481de9c
ZY		 4587 iwl_release_restricted_access(priv);
4588 return;
4589 }
4590
583fab37 4591 IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
b481de9c
ZY		 4592 size, num_wraps);
4593
4594 /* if uCode has wrapped back to top of log, start at the oldest entry,
4595 * i.e the next one that uCode would fill. */
4596 if (num_wraps)
4597 iwl_print_event_log(priv, next_entry,
4598 capacity - next_entry, mode);
4599
4600 /* (then/else) start at top of log */
4601 iwl_print_event_log(priv, 0, next_entry, mode);
4602
4603 iwl_release_restricted_access(priv);
4604}
4605
4606/**
4607 * iwl_irq_handle_error - called for HW or SW error interrupt from card
4608 */
4609static void iwl_irq_handle_error(struct iwl_priv *priv)
4610{
4611 /* Set the FW error flag -- cleared on iwl_down */
4612 set_bit(STATUS_FW_ERROR, &priv->status);
4613
4614 /* Cancel currently queued command. */
4615 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4616
4617#ifdef CONFIG_IWLWIFI_DEBUG
4618 if (iwl_debug_level & IWL_DL_FW_ERRORS) {
4619 iwl_dump_nic_error_log(priv);
4620 iwl_dump_nic_event_log(priv);
4621 iwl_print_rx_config_cmd(&priv->staging_rxon);
4622 }
4623#endif
4624
4625 wake_up_interruptible(&priv->wait_command_queue);
4626
4627 /* Keep the restart process from trying to send host
4628 * commands by clearing the INIT status bit */
4629 clear_bit(STATUS_READY, &priv->status);
4630
4631 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4632 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
4633 "Restarting adapter due to uCode error.\n");
4634
4635 if (iwl_is_associated(priv)) {
4636 memcpy(&priv->recovery_rxon, &priv->active_rxon,
4637 sizeof(priv->recovery_rxon));
4638 priv->error_recovering = 1;
4639 }
4640 queue_work(priv->workqueue, &priv->restart);
4641 }
4642}
4643
4644static void iwl_error_recovery(struct iwl_priv *priv)
4645{
4646 unsigned long flags;
4647
4648 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
4649 sizeof(priv->staging_rxon));
4650 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4651 iwl_commit_rxon(priv);
4652
556f8db7 4653 iwl_add_station(priv, priv->bssid, 1, 0);
b481de9c
ZY		 4654
4655 spin_lock_irqsave(&priv->lock, flags);
4656 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
4657 priv->error_recovering = 0;
4658 spin_unlock_irqrestore(&priv->lock, flags);
4659}
4660
4661static void iwl_irq_tasklet(struct iwl_priv *priv)
4662{
4663 u32 inta, handled = 0;
4664 u32 inta_fh;
4665 unsigned long flags;
4666#ifdef CONFIG_IWLWIFI_DEBUG
4667 u32 inta_mask;
4668#endif
4669
4670 spin_lock_irqsave(&priv->lock, flags);
4671
4672 /* Ack/clear/reset pending uCode interrupts.
4673 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4674 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
4675 inta = iwl_read32(priv, CSR_INT);
4676 iwl_write32(priv, CSR_INT, inta);
4677
4678 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4679 * Any new interrupts that happen after this, either while we're
4680 * in this tasklet, or later, will show up in next ISR/tasklet. */
4681 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4682 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
4683
4684#ifdef CONFIG_IWLWIFI_DEBUG
4685 if (iwl_debug_level & IWL_DL_ISR) {
4686 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
4687 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4688 inta, inta_mask, inta_fh);
4689 }
4690#endif
4691
4692 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4693 * atomic, make sure that inta covers all the interrupts that
4694 * we've discovered, even if FH interrupt came in just after
4695 * reading CSR_INT. */
4696 if (inta_fh & CSR_FH_INT_RX_MASK)
4697 inta |= CSR_INT_BIT_FH_RX;
4698 if (inta_fh & CSR_FH_INT_TX_MASK)
4699 inta |= CSR_INT_BIT_FH_TX;
4700
4701 /* Now service all interrupt bits discovered above. */
4702 if (inta & CSR_INT_BIT_HW_ERR) {
4703 IWL_ERROR("Microcode HW error detected. Restarting.\n");
4704
4705 /* Tell the device to stop sending interrupts */
4706 iwl_disable_interrupts(priv);
4707
4708 iwl_irq_handle_error(priv);
4709
4710 handled |= CSR_INT_BIT_HW_ERR;
4711
4712 spin_unlock_irqrestore(&priv->lock, flags);
4713
4714 return;
4715 }
4716
4717#ifdef CONFIG_IWLWIFI_DEBUG
4718 if (iwl_debug_level & (IWL_DL_ISR)) {
4719 /* NIC fires this, but we don't use it, redundant with WAKEUP */
4720 if (inta & CSR_INT_BIT_MAC_CLK_ACTV)
4721 IWL_DEBUG_ISR("Microcode started or stopped.\n");
4722
4723 /* Alive notification via Rx interrupt will do the real work */
4724 if (inta & CSR_INT_BIT_ALIVE)
4725 IWL_DEBUG_ISR("Alive interrupt\n");
4726 }
4727#endif
4728 /* Safely ignore these bits for debug checks below */
4729 inta &= ~(CSR_INT_BIT_MAC_CLK_ACTV | CSR_INT_BIT_ALIVE);
4730
4731 /* HW RF KILL switch toggled (4965 only) */
4732 if (inta & CSR_INT_BIT_RF_KILL) {
4733 int hw_rf_kill = 0;
4734 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
4735 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
4736 hw_rf_kill = 1;
4737
4738 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
4739 "RF_KILL bit toggled to %s.\n",
4740 hw_rf_kill ? "disable radio":"enable radio");
4741
4742 /* Queue restart only if RF_KILL switch was set to "kill"
4743 * when we loaded driver, and is now set to "enable".
4744 * After we're Alive, RF_KILL gets handled by
4745 * iwl_rx_card_state_notif() */
53e49093
ZY		 4746 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
4747 clear_bit(STATUS_RF_KILL_HW, &priv->status);
b481de9c 4748 queue_work(priv->workqueue, &priv->restart);
53e49093 4749 }
b481de9c
ZY		 4750
4751 handled |= CSR_INT_BIT_RF_KILL;
4752 }
4753
4754 /* Chip got too hot and stopped itself (4965 only) */
4755 if (inta & CSR_INT_BIT_CT_KILL) {
4756 IWL_ERROR("Microcode CT kill error detected.\n");
4757 handled |= CSR_INT_BIT_CT_KILL;
4758 }
4759
4760 /* Error detected by uCode */
4761 if (inta & CSR_INT_BIT_SW_ERR) {
4762 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
4763 inta);
4764 iwl_irq_handle_error(priv);
4765 handled |= CSR_INT_BIT_SW_ERR;
4766 }
4767
4768 /* uCode wakes up after power-down sleep */
4769 if (inta & CSR_INT_BIT_WAKEUP) {
4770 IWL_DEBUG_ISR("Wakeup interrupt\n");
4771 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
4772 iwl_tx_queue_update_write_ptr(priv, &priv->txq[0]);
4773 iwl_tx_queue_update_write_ptr(priv, &priv->txq[1]);
4774 iwl_tx_queue_update_write_ptr(priv, &priv->txq[2]);
4775 iwl_tx_queue_update_write_ptr(priv, &priv->txq[3]);
4776 iwl_tx_queue_update_write_ptr(priv, &priv->txq[4]);
4777 iwl_tx_queue_update_write_ptr(priv, &priv->txq[5]);
4778
4779 handled |= CSR_INT_BIT_WAKEUP;
4780 }
4781
4782 /* All uCode command responses, including Tx command responses,
4783 * Rx "responses" (frame-received notification), and other
4784 * notifications from uCode come through here*/
4785 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
4786 iwl_rx_handle(priv);
4787 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
4788 }
4789
4790 if (inta & CSR_INT_BIT_FH_TX) {
4791 IWL_DEBUG_ISR("Tx interrupt\n");
4792
4793 iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
4794 if (!iwl_grab_restricted_access(priv)) {
4795 iwl_write_restricted(priv,
4796 FH_TCSR_CREDIT
4797 (ALM_FH_SRVC_CHNL), 0x0);
4798 iwl_release_restricted_access(priv);
4799 }
4800 handled |= CSR_INT_BIT_FH_TX;
4801 }
4802
4803 if (inta & ~handled)
4804 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
4805
4806 if (inta & ~CSR_INI_SET_MASK) {
4807 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
4808 inta & ~CSR_INI_SET_MASK);
4809 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
4810 }
4811
4812 /* Re-enable all interrupts */
4813 iwl_enable_interrupts(priv);
4814
4815#ifdef CONFIG_IWLWIFI_DEBUG
4816 if (iwl_debug_level & (IWL_DL_ISR)) {
4817 inta = iwl_read32(priv, CSR_INT);
4818 inta_mask = iwl_read32(priv, CSR_INT_MASK);
4819 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4820 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
4821 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
4822 }
4823#endif
4824 spin_unlock_irqrestore(&priv->lock, flags);
4825}
4826
4827static irqreturn_t iwl_isr(int irq, void *data)
4828{
4829 struct iwl_priv *priv = data;
4830 u32 inta, inta_mask;
4831 u32 inta_fh;
4832 if (!priv)
4833 return IRQ_NONE;
4834
4835 spin_lock(&priv->lock);
4836
4837 /* Disable (but don't clear!) interrupts here to avoid
4838 * back-to-back ISRs and sporadic interrupts from our NIC.
4839 * If we have something to service, the tasklet will re-enable ints.
4840 * If we *don't* have something, we'll re-enable before leaving here. */
4841 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
4842 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
4843
4844 /* Discover which interrupts are active/pending */
4845 inta = iwl_read32(priv, CSR_INT);
4846 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4847
4848 /* Ignore interrupt if there's nothing in NIC to service.
4849 * This may be due to IRQ shared with another device,
4850 * or due to sporadic interrupts thrown from our NIC. */
4851 if (!inta && !inta_fh) {
4852 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
4853 goto none;
4854 }
4855
4856 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
4857 /* Hardware disappeared */
4858 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
cb4da1a3 4859 goto unplugged;
b481de9c
ZY		 4860 }
4861
4862 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4863 inta, inta_mask, inta_fh);
4864
4865 /* iwl_irq_tasklet() will service interrupts and re-enable them */
4866 tasklet_schedule(&priv->irq_tasklet);
cb4da1a3 4867unplugged:
b481de9c
ZY		 4868 spin_unlock(&priv->lock);
4869
4870 return IRQ_HANDLED;
4871
4872 none:
4873 /* re-enable interrupts here since we don't have anything to service. */
4874 iwl_enable_interrupts(priv);
4875 spin_unlock(&priv->lock);
4876 return IRQ_NONE;
4877}
4878
4879/************************** EEPROM BANDS ****************************
4880 *
4881 * The iwl_eeprom_band definitions below provide the mapping from the
4882 * EEPROM contents to the specific channel number supported for each
4883 * band.
4884 *
4885 * For example, iwl_priv->eeprom.band_3_channels[4] from the band_3
4886 * definition below maps to physical channel 42 in the 5.2GHz spectrum.
4887 * The specific geography and calibration information for that channel
4888 * is contained in the eeprom map itself.
4889 *
4890 * During init, we copy the eeprom information and channel map
4891 * information into priv->channel_info_24/52 and priv->channel_map_24/52
4892 *
4893 * channel_map_24/52 provides the index in the channel_info array for a
4894 * given channel. We have to have two separate maps as there is channel
4895 * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
4896 * band_2
4897 *
4898 * A value of 0xff stored in the channel_map indicates that the channel
4899 * is not supported by the hardware at all.
4900 *
4901 * A value of 0xfe in the channel_map indicates that the channel is not
4902 * valid for Tx with the current hardware. This means that
4903 * while the system can tune and receive on a given channel, it may not
4904 * be able to associate or transmit any frames on that
4905 * channel. There is no corresponding channel information for that
4906 * entry.
4907 *
4908 *********************************************************************/
4909
4910/* 2.4 GHz */
4911static const u8 iwl_eeprom_band_1[14] = {
4912 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
4913};
4914
4915/* 5.2 GHz bands */
4916static const u8 iwl_eeprom_band_2[] = {
4917 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
4918};
4919
4920static const u8 iwl_eeprom_band_3[] = { /* 5205-5320MHz */
4921 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
4922};
4923
4924static const u8 iwl_eeprom_band_4[] = { /* 5500-5700MHz */
4925 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
4926};
4927
4928static const u8 iwl_eeprom_band_5[] = { /* 5725-5825MHz */
4929 145, 149, 153, 157, 161, 165
4930};
4931
4932static void iwl_init_band_reference(const struct iwl_priv *priv, int band,
4933 int *eeprom_ch_count,
4934 const struct iwl_eeprom_channel
4935 **eeprom_ch_info,
4936 const u8 **eeprom_ch_index)
4937{
4938 switch (band) {
4939 case 1: /* 2.4GHz band */
4940 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_1);
4941 *eeprom_ch_info = priv->eeprom.band_1_channels;
4942 *eeprom_ch_index = iwl_eeprom_band_1;
4943 break;
4944 case 2: /* 5.2GHz band */
4945 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_2);
4946 *eeprom_ch_info = priv->eeprom.band_2_channels;
4947 *eeprom_ch_index = iwl_eeprom_band_2;
4948 break;
4949 case 3: /* 5.2GHz band */
4950 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_3);
4951 *eeprom_ch_info = priv->eeprom.band_3_channels;
4952 *eeprom_ch_index = iwl_eeprom_band_3;
4953 break;
4954 case 4: /* 5.2GHz band */
4955 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_4);
4956 *eeprom_ch_info = priv->eeprom.band_4_channels;
4957 *eeprom_ch_index = iwl_eeprom_band_4;
4958 break;
4959 case 5: /* 5.2GHz band */
4960 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_5);
4961 *eeprom_ch_info = priv->eeprom.band_5_channels;
4962 *eeprom_ch_index = iwl_eeprom_band_5;
4963 break;
4964 default:
4965 BUG();
4966 return;
4967 }
4968}
4969
4970const struct iwl_channel_info *iwl_get_channel_info(const struct iwl_priv *priv,
4971 int phymode, u16 channel)
4972{
4973 int i;
4974
4975 switch (phymode) {
4976 case MODE_IEEE80211A:
4977 for (i = 14; i < priv->channel_count; i++) {
4978 if (priv->channel_info[i].channel == channel)
4979 return &priv->channel_info[i];
4980 }
4981 break;
4982
4983 case MODE_IEEE80211B:
4984 case MODE_IEEE80211G:
4985 if (channel >= 1 && channel <= 14)
4986 return &priv->channel_info[channel - 1];
4987 break;
4988
4989 }
4990
4991 return NULL;
4992}
4993
4994#define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
4995 ? # x " " : "")
4996
4997static int iwl_init_channel_map(struct iwl_priv *priv)
4998{
4999 int eeprom_ch_count = 0;
5000 const u8 *eeprom_ch_index = NULL;
5001 const struct iwl_eeprom_channel *eeprom_ch_info = NULL;
5002 int band, ch;
5003 struct iwl_channel_info *ch_info;
5004
5005 if (priv->channel_count) {
5006 IWL_DEBUG_INFO("Channel map already initialized.\n");
5007 return 0;
5008 }
5009
5010 if (priv->eeprom.version < 0x2f) {
5011 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
5012 priv->eeprom.version);
5013 return -EINVAL;
5014 }
5015
5016 IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
5017
5018 priv->channel_count =
5019 ARRAY_SIZE(iwl_eeprom_band_1) +
5020 ARRAY_SIZE(iwl_eeprom_band_2) +
5021 ARRAY_SIZE(iwl_eeprom_band_3) +
5022 ARRAY_SIZE(iwl_eeprom_band_4) +
5023 ARRAY_SIZE(iwl_eeprom_band_5);
5024
5025 IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
5026
5027 priv->channel_info = kzalloc(sizeof(struct iwl_channel_info) *
5028 priv->channel_count, GFP_KERNEL);
5029 if (!priv->channel_info) {
5030 IWL_ERROR("Could not allocate channel_info\n");
5031 priv->channel_count = 0;
5032 return -ENOMEM;
5033 }
5034
5035 ch_info = priv->channel_info;
5036
5037 /* Loop through the 5 EEPROM bands adding them in order to the
5038 * channel map we maintain (that contains additional information than
5039 * what just in the EEPROM) */
5040 for (band = 1; band <= 5; band++) {
5041
5042 iwl_init_band_reference(priv, band, &eeprom_ch_count,
5043 &eeprom_ch_info, &eeprom_ch_index);
5044
5045 /* Loop through each band adding each of the channels */
5046 for (ch = 0; ch < eeprom_ch_count; ch++) {
5047 ch_info->channel = eeprom_ch_index[ch];
5048 ch_info->phymode = (band == 1) ? MODE_IEEE80211B :
5049 MODE_IEEE80211A;
5050
5051 /* permanently store EEPROM's channel regulatory flags
5052 * and max power in channel info database. */
5053 ch_info->eeprom = eeprom_ch_info[ch];
5054
5055 /* Copy the run-time flags so they are there even on
5056 * invalid channels */
5057 ch_info->flags = eeprom_ch_info[ch].flags;
5058
5059 if (!(is_channel_valid(ch_info))) {
5060 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
5061 "No traffic\n",
5062 ch_info->channel,
5063 ch_info->flags,
5064 is_channel_a_band(ch_info) ?
5065 "5.2" : "2.4");
5066 ch_info++;
5067 continue;
5068 }
5069
5070 /* Initialize regulatory-based run-time data */
5071 ch_info->max_power_avg = ch_info->curr_txpow =
5072 eeprom_ch_info[ch].max_power_avg;
5073 ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
5074 ch_info->min_power = 0;
5075
5076 IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
5077 " %ddBm): Ad-Hoc %ssupported\n",
5078 ch_info->channel,
5079 is_channel_a_band(ch_info) ?
5080 "5.2" : "2.4",
5081 CHECK_AND_PRINT(IBSS),
5082 CHECK_AND_PRINT(ACTIVE),
5083 CHECK_AND_PRINT(RADAR),
5084 CHECK_AND_PRINT(WIDE),
5085 CHECK_AND_PRINT(NARROW),
5086 CHECK_AND_PRINT(DFS),
5087 eeprom_ch_info[ch].flags,
5088 eeprom_ch_info[ch].max_power_avg,
5089 ((eeprom_ch_info[ch].
5090 flags & EEPROM_CHANNEL_IBSS)
5091 && !(eeprom_ch_info[ch].
5092 flags & EEPROM_CHANNEL_RADAR))
5093 ? "" : "not ");
5094
5095 /* Set the user_txpower_limit to the highest power
5096 * supported by any channel */
5097 if (eeprom_ch_info[ch].max_power_avg >
5098 priv->user_txpower_limit)
5099 priv->user_txpower_limit =
5100 eeprom_ch_info[ch].max_power_avg;
5101
5102 ch_info++;
5103 }
5104 }
5105
5106 if (iwl3945_txpower_set_from_eeprom(priv))
5107 return -EIO;
5108
5109 return 0;
5110}
5111
5112/* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
5113 * sending probe req. This should be set long enough to hear probe responses
5114 * from more than one AP. */
5115#define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
5116#define IWL_ACTIVE_DWELL_TIME_52 (10)
5117
5118/* For faster active scanning, scan will move to the next channel if fewer than
5119 * PLCP_QUIET_THRESH packets are heard on this channel within
5120 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
5121 * time if it's a quiet channel (nothing responded to our probe, and there's
5122 * no other traffic).
5123 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
5124#define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
5125#define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
5126
5127/* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
5128 * Must be set longer than active dwell time.
5129 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
5130#define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
5131#define IWL_PASSIVE_DWELL_TIME_52 (10)
5132#define IWL_PASSIVE_DWELL_BASE (100)
5133#define IWL_CHANNEL_TUNE_TIME 5
5134
5135static inline u16 iwl_get_active_dwell_time(struct iwl_priv *priv, int phymode)
5136{
5137 if (phymode == MODE_IEEE80211A)
5138 return IWL_ACTIVE_DWELL_TIME_52;
5139 else
5140 return IWL_ACTIVE_DWELL_TIME_24;
5141}
5142
5143static u16 iwl_get_passive_dwell_time(struct iwl_priv *priv, int phymode)
5144{
5145 u16 active = iwl_get_active_dwell_time(priv, phymode);
5146 u16 passive = (phymode != MODE_IEEE80211A) ?
5147 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
5148 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
5149
5150 if (iwl_is_associated(priv)) {
5151 /* If we're associated, we clamp the maximum passive
5152 * dwell time to be 98% of the beacon interval (minus
5153 * 2 * channel tune time) */
5154 passive = priv->beacon_int;
5155 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
5156 passive = IWL_PASSIVE_DWELL_BASE;
5157 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
5158 }
5159
5160 if (passive <= active)
5161 passive = active + 1;
5162
5163 return passive;
5164}
5165
5166static int iwl_get_channels_for_scan(struct iwl_priv *priv, int phymode,
5167 u8 is_active, u8 direct_mask,
5168 struct iwl_scan_channel *scan_ch)
5169{
5170 const struct ieee80211_channel *channels = NULL;
5171 const struct ieee80211_hw_mode *hw_mode;
5172 const struct iwl_channel_info *ch_info;
5173 u16 passive_dwell = 0;
5174 u16 active_dwell = 0;
5175 int added, i;
5176
5177 hw_mode = iwl_get_hw_mode(priv, phymode);
5178 if (!hw_mode)
5179 return 0;
5180
5181 channels = hw_mode->channels;
5182
5183 active_dwell = iwl_get_active_dwell_time(priv, phymode);
5184 passive_dwell = iwl_get_passive_dwell_time(priv, phymode);
5185
5186 for (i = 0, added = 0; i < hw_mode->num_channels; i++) {
5187 if (channels[i].chan ==
5188 le16_to_cpu(priv->active_rxon.channel)) {
5189 if (iwl_is_associated(priv)) {
5190 IWL_DEBUG_SCAN
5191 ("Skipping current channel %d\n",
5192 le16_to_cpu(priv->active_rxon.channel));
5193 continue;
5194 }
5195 } else if (priv->only_active_channel)
5196 continue;
5197
5198 scan_ch->channel = channels[i].chan;
5199
5200 ch_info = iwl_get_channel_info(priv, phymode, scan_ch->channel);
5201 if (!is_channel_valid(ch_info)) {
5202 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
5203 scan_ch->channel);
5204 continue;
5205 }
5206
5207 if (!is_active || is_channel_passive(ch_info) ||
5208 !(channels[i].flag & IEEE80211_CHAN_W_ACTIVE_SCAN))
5209 scan_ch->type = 0; /* passive */
5210 else
5211 scan_ch->type = 1; /* active */
5212
5213 if (scan_ch->type & 1)
5214 scan_ch->type |= (direct_mask << 1);
5215
5216 if (is_channel_narrow(ch_info))
5217 scan_ch->type |= (1 << 7);
5218
5219 scan_ch->active_dwell = cpu_to_le16(active_dwell);
5220 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
5221
5222 /* Set power levels to defaults */
5223 scan_ch->tpc.dsp_atten = 110;
5224 /* scan_pwr_info->tpc.dsp_atten; */
5225
5226 /*scan_pwr_info->tpc.tx_gain; */
5227 if (phymode == MODE_IEEE80211A)
5228 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
5229 else {
5230 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
5231 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
5232 * power level
5233 scan_ch->tpc.tx_gain = ((1<<5) | (2 << 3)) | 3;
5234 */
5235 }
5236
5237 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
5238 scan_ch->channel,
5239 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
5240 (scan_ch->type & 1) ?
5241 active_dwell : passive_dwell);
5242
5243 scan_ch++;
5244 added++;
5245 }
5246
5247 IWL_DEBUG_SCAN("total channels to scan %d \n", added);
5248 return added;
5249}
5250
5251static void iwl_reset_channel_flag(struct iwl_priv *priv)
5252{
5253 int i, j;
5254 for (i = 0; i < 3; i++) {
5255 struct ieee80211_hw_mode *hw_mode = (void *)&priv->modes[i];
5256 for (j = 0; j < hw_mode->num_channels; j++)
5257 hw_mode->channels[j].flag = hw_mode->channels[j].val;
5258 }
5259}
5260
5261static void iwl_init_hw_rates(struct iwl_priv *priv,
5262 struct ieee80211_rate *rates)
5263{
5264 int i;
5265
5266 for (i = 0; i < IWL_RATE_COUNT; i++) {
5267 rates[i].rate = iwl_rates[i].ieee * 5;
5268 rates[i].val = i; /* Rate scaling will work on indexes */
5269 rates[i].val2 = i;
5270 rates[i].flags = IEEE80211_RATE_SUPPORTED;
5271 /* Only OFDM have the bits-per-symbol set */
5272 if ((i <= IWL_LAST_OFDM_RATE) && (i >= IWL_FIRST_OFDM_RATE))
5273 rates[i].flags |= IEEE80211_RATE_OFDM;
5274 else {
5275 /*
5276 * If CCK 1M then set rate flag to CCK else CCK_2
5277 * which is CCK | PREAMBLE2
5278 */
5279 rates[i].flags |= (iwl_rates[i].plcp == 10) ?
5280 IEEE80211_RATE_CCK : IEEE80211_RATE_CCK_2;
5281 }
5282
5283 /* Set up which ones are basic rates... */
5284 if (IWL_BASIC_RATES_MASK & (1 << i))
5285 rates[i].flags |= IEEE80211_RATE_BASIC;
5286 }
5287}
5288
5289/**
5290 * iwl_init_geos - Initialize mac80211's geo/channel info based from eeprom
5291 */
5292static int iwl_init_geos(struct iwl_priv *priv)
5293{
5294 struct iwl_channel_info *ch;
5295 struct ieee80211_hw_mode *modes;
5296 struct ieee80211_channel *channels;
5297 struct ieee80211_channel *geo_ch;
5298 struct ieee80211_rate *rates;
5299 int i = 0;
5300 enum {
5301 A = 0,
5302 B = 1,
5303 G = 2,
5304 };
5305 int mode_count = 3;
5306
5307 if (priv->modes) {
5308 IWL_DEBUG_INFO("Geography modes already initialized.\n");
5309 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5310 return 0;
5311 }
5312
5313 modes = kzalloc(sizeof(struct ieee80211_hw_mode) * mode_count,
5314 GFP_KERNEL);
5315 if (!modes)
5316 return -ENOMEM;
5317
5318 channels = kzalloc(sizeof(struct ieee80211_channel) *
5319 priv->channel_count, GFP_KERNEL);
5320 if (!channels) {
5321 kfree(modes);
5322 return -ENOMEM;
5323 }
5324
5325 rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_MAX_RATES + 1)),
5326 GFP_KERNEL);
5327 if (!rates) {
5328 kfree(modes);
5329 kfree(channels);
5330 return -ENOMEM;
5331 }
5332
5333 /* 0 = 802.11a
5334 * 1 = 802.11b
5335 * 2 = 802.11g
5336 */
5337
5338 /* 5.2GHz channels start after the 2.4GHz channels */
5339 modes[A].mode = MODE_IEEE80211A;
5340 modes[A].channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
14577f23 5341 modes[A].rates = &rates[4];
b481de9c
ZY		 5342 modes[A].num_rates = 8; /* just OFDM */
5343 modes[A].num_channels = 0;
5344
5345 modes[B].mode = MODE_IEEE80211B;
5346 modes[B].channels = channels;
14577f23 5347 modes[B].rates = rates;
b481de9c
ZY		 5348 modes[B].num_rates = 4; /* just CCK */
5349 modes[B].num_channels = 0;
5350
5351 modes[G].mode = MODE_IEEE80211G;
5352 modes[G].channels = channels;
5353 modes[G].rates = rates;
5354 modes[G].num_rates = 12; /* OFDM & CCK */
5355 modes[G].num_channels = 0;
5356
5357 priv->ieee_channels = channels;
5358 priv->ieee_rates = rates;
5359
5360 iwl_init_hw_rates(priv, rates);
5361
5362 for (i = 0, geo_ch = channels; i < priv->channel_count; i++) {
5363 ch = &priv->channel_info[i];
5364
5365 if (!is_channel_valid(ch)) {
5366 IWL_DEBUG_INFO("Channel %d [%sGHz] is restricted -- "
5367 "skipping.\n",
5368 ch->channel, is_channel_a_band(ch) ?
5369 "5.2" : "2.4");
5370 continue;
5371 }
5372
5373 if (is_channel_a_band(ch))
5374 geo_ch = &modes[A].channels[modes[A].num_channels++];
5375 else {
5376 geo_ch = &modes[B].channels[modes[B].num_channels++];
5377 modes[G].num_channels++;
5378 }
5379
5380 geo_ch->freq = ieee80211chan2mhz(ch->channel);
5381 geo_ch->chan = ch->channel;
5382 geo_ch->power_level = ch->max_power_avg;
5383 geo_ch->antenna_max = 0xff;
5384
5385 if (is_channel_valid(ch)) {
5386 geo_ch->flag = IEEE80211_CHAN_W_SCAN;
5387 if (ch->flags & EEPROM_CHANNEL_IBSS)
5388 geo_ch->flag |= IEEE80211_CHAN_W_IBSS;
5389
5390 if (ch->flags & EEPROM_CHANNEL_ACTIVE)
5391 geo_ch->flag |= IEEE80211_CHAN_W_ACTIVE_SCAN;
5392
5393 if (ch->flags & EEPROM_CHANNEL_RADAR)
5394 geo_ch->flag |= IEEE80211_CHAN_W_RADAR_DETECT;
5395
5396 if (ch->max_power_avg > priv->max_channel_txpower_limit)
5397 priv->max_channel_txpower_limit =
5398 ch->max_power_avg;
5399 }
5400
5401 geo_ch->val = geo_ch->flag;
5402 }
5403
5404 if ((modes[A].num_channels == 0) && priv->is_abg) {
5405 printk(KERN_INFO DRV_NAME
5406 ": Incorrectly detected BG card as ABG. Please send "
5407 "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5408 priv->pci_dev->device, priv->pci_dev->subsystem_device);
5409 priv->is_abg = 0;
5410 }
5411
5412 printk(KERN_INFO DRV_NAME
5413 ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5414 modes[G].num_channels, modes[A].num_channels);
5415
5416 /*
5417 * NOTE: We register these in preference of order -- the
5418 * stack doesn't currently (as of 7.0.6 / Apr 24 '07) pick
5419 * a phymode based on rates or AP capabilities but seems to
5420 * configure it purely on if the channel being configured
5421 * is supported by a mode -- and the first match is taken
5422 */
5423
5424 if (modes[G].num_channels)
5425 ieee80211_register_hwmode(priv->hw, &modes[G]);
5426 if (modes[B].num_channels)
5427 ieee80211_register_hwmode(priv->hw, &modes[B]);
5428 if (modes[A].num_channels)
5429 ieee80211_register_hwmode(priv->hw, &modes[A]);
5430
5431 priv->modes = modes;
5432 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5433
5434 return 0;
5435}
5436
5437/******************************************************************************
5438 *
5439 * uCode download functions
5440 *
5441 ******************************************************************************/
5442
5443static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
5444{
5445 if (priv->ucode_code.v_addr != NULL) {
5446 pci_free_consistent(priv->pci_dev,
5447 priv->ucode_code.len,
5448 priv->ucode_code.v_addr,
5449 priv->ucode_code.p_addr);
5450 priv->ucode_code.v_addr = NULL;
5451 }
5452 if (priv->ucode_data.v_addr != NULL) {
5453 pci_free_consistent(priv->pci_dev,
5454 priv->ucode_data.len,
5455 priv->ucode_data.v_addr,
5456 priv->ucode_data.p_addr);
5457 priv->ucode_data.v_addr = NULL;
5458 }
5459 if (priv->ucode_data_backup.v_addr != NULL) {
5460 pci_free_consistent(priv->pci_dev,
5461 priv->ucode_data_backup.len,
5462 priv->ucode_data_backup.v_addr,
5463 priv->ucode_data_backup.p_addr);
5464 priv->ucode_data_backup.v_addr = NULL;
5465 }
5466 if (priv->ucode_init.v_addr != NULL) {
5467 pci_free_consistent(priv->pci_dev,
5468 priv->ucode_init.len,
5469 priv->ucode_init.v_addr,
5470 priv->ucode_init.p_addr);
5471 priv->ucode_init.v_addr = NULL;
5472 }
5473 if (priv->ucode_init_data.v_addr != NULL) {
5474 pci_free_consistent(priv->pci_dev,
5475 priv->ucode_init_data.len,
5476 priv->ucode_init_data.v_addr,
5477 priv->ucode_init_data.p_addr);
5478 priv->ucode_init_data.v_addr = NULL;
5479 }
5480 if (priv->ucode_boot.v_addr != NULL) {
5481 pci_free_consistent(priv->pci_dev,
5482 priv->ucode_boot.len,
5483 priv->ucode_boot.v_addr,
5484 priv->ucode_boot.p_addr);
5485 priv->ucode_boot.v_addr = NULL;
5486 }
5487}
5488
5489/**
5490 * iwl_verify_inst_full - verify runtime uCode image in card vs. host,
5491 * looking at all data.
5492 */
5493static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 * image, u32 len)
5494{
5495 u32 val;
5496 u32 save_len = len;
5497 int rc = 0;
5498 u32 errcnt;
5499
5500 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5501
5502 rc = iwl_grab_restricted_access(priv);
5503 if (rc)
5504 return rc;
5505
5506 iwl_write_restricted(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
5507
5508 errcnt = 0;
5509 for (; len > 0; len -= sizeof(u32), image++) {
5510 /* read data comes through single port, auto-incr addr */
5511 /* NOTE: Use the debugless read so we don't flood kernel log
5512 * if IWL_DL_IO is set */
5513 val = _iwl_read_restricted(priv, HBUS_TARG_MEM_RDAT);
5514 if (val != le32_to_cpu(*image)) {
5515 IWL_ERROR("uCode INST section is invalid at "
5516 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5517 save_len - len, val, le32_to_cpu(*image));
5518 rc = -EIO;
5519 errcnt++;
5520 if (errcnt >= 20)
5521 break;
5522 }
5523 }
5524
5525 iwl_release_restricted_access(priv);
5526
5527 if (!errcnt)
5528 IWL_DEBUG_INFO
5529 ("ucode image in INSTRUCTION memory is good\n");
5530
5531 return rc;
5532}
5533
5534
5535/**
5536 * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
5537 * using sample data 100 bytes apart. If these sample points are good,
5538 * it's a pretty good bet that everything between them is good, too.
5539 */
5540static int iwl_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
5541{
5542 u32 val;
5543 int rc = 0;
5544 u32 errcnt = 0;
5545 u32 i;
5546
5547 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5548
5549 rc = iwl_grab_restricted_access(priv);
5550 if (rc)
5551 return rc;
5552
5553 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
5554 /* read data comes through single port, auto-incr addr */
5555 /* NOTE: Use the debugless read so we don't flood kernel log
5556 * if IWL_DL_IO is set */
5557 iwl_write_restricted(priv, HBUS_TARG_MEM_RADDR,
5558 i + RTC_INST_LOWER_BOUND);
5559 val = _iwl_read_restricted(priv, HBUS_TARG_MEM_RDAT);
5560 if (val != le32_to_cpu(*image)) {
5561#if 0 /* Enable this if you want to see details */
5562 IWL_ERROR("uCode INST section is invalid at "
5563 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5564 i, val, *image);
5565#endif
5566 rc = -EIO;
5567 errcnt++;
5568 if (errcnt >= 3)
5569 break;
5570 }
5571 }
5572
5573 iwl_release_restricted_access(priv);
5574
5575 return rc;
5576}
5577
5578
5579/**
5580 * iwl_verify_ucode - determine which instruction image is in SRAM,
5581 * and verify its contents
5582 */
5583static int iwl_verify_ucode(struct iwl_priv *priv)
5584{
5585 __le32 *image;
5586 u32 len;
5587 int rc = 0;
5588
5589 /* Try bootstrap */
5590 image = (__le32 *)priv->ucode_boot.v_addr;
5591 len = priv->ucode_boot.len;
5592 rc = iwl_verify_inst_sparse(priv, image, len);
5593 if (rc == 0) {
5594 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5595 return 0;
5596 }
5597
5598 /* Try initialize */
5599 image = (__le32 *)priv->ucode_init.v_addr;
5600 len = priv->ucode_init.len;
5601 rc = iwl_verify_inst_sparse(priv, image, len);
5602 if (rc == 0) {
5603 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5604 return 0;
5605 }
5606
5607 /* Try runtime/protocol */
5608 image = (__le32 *)priv->ucode_code.v_addr;
5609 len = priv->ucode_code.len;
5610 rc = iwl_verify_inst_sparse(priv, image, len);
5611 if (rc == 0) {
5612 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5613 return 0;
5614 }
5615
5616 IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5617
5618 /* Show first several data entries in instruction SRAM.
5619 * Selection of bootstrap image is arbitrary. */
5620 image = (__le32 *)priv->ucode_boot.v_addr;
5621 len = priv->ucode_boot.len;
5622 rc = iwl_verify_inst_full(priv, image, len);
5623
5624 return rc;
5625}
5626
5627
5628/* check contents of special bootstrap uCode SRAM */
5629static int iwl_verify_bsm(struct iwl_priv *priv)
5630{
5631 __le32 *image = priv->ucode_boot.v_addr;
5632 u32 len = priv->ucode_boot.len;
5633 u32 reg;
5634 u32 val;
5635
5636 IWL_DEBUG_INFO("Begin verify bsm\n");
5637
5638 /* verify BSM SRAM contents */
5639 val = iwl_read_restricted_reg(priv, BSM_WR_DWCOUNT_REG);
5640 for (reg = BSM_SRAM_LOWER_BOUND;
5641 reg < BSM_SRAM_LOWER_BOUND + len;
5642 reg += sizeof(u32), image ++) {
5643 val = iwl_read_restricted_reg(priv, reg);
5644 if (val != le32_to_cpu(*image)) {
5645 IWL_ERROR("BSM uCode verification failed at "
5646 "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
5647 BSM_SRAM_LOWER_BOUND,
5648 reg - BSM_SRAM_LOWER_BOUND, len,
5649 val, le32_to_cpu(*image));
5650 return -EIO;
5651 }
5652 }
5653
5654 IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
5655
5656 return 0;
5657}
5658
5659/**
5660 * iwl_load_bsm - Load bootstrap instructions
5661 *
5662 * BSM operation:
5663 *
5664 * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
5665 * in special SRAM that does not power down during RFKILL. When powering back
5666 * up after power-saving sleeps (or during initial uCode load), the BSM loads
5667 * the bootstrap program into the on-board processor, and starts it.
5668 *
5669 * The bootstrap program loads (via DMA) instructions and data for a new
5670 * program from host DRAM locations indicated by the host driver in the
5671 * BSM_DRAM_* registers. Once the new program is loaded, it starts
5672 * automatically.
5673 *
5674 * When initializing the NIC, the host driver points the BSM to the
5675 * "initialize" uCode image. This uCode sets up some internal data, then
5676 * notifies host via "initialize alive" that it is complete.
5677 *
5678 * The host then replaces the BSM_DRAM_* pointer values to point to the
5679 * normal runtime uCode instructions and a backup uCode data cache buffer
5680 * (filled initially with starting data values for the on-board processor),
5681 * then triggers the "initialize" uCode to load and launch the runtime uCode,
5682 * which begins normal operation.
5683 *
5684 * When doing a power-save shutdown, runtime uCode saves data SRAM into
5685 * the backup data cache in DRAM before SRAM is powered down.
5686 *
5687 * When powering back up, the BSM loads the bootstrap program. This reloads
5688 * the runtime uCode instructions and the backup data cache into SRAM,
5689 * and re-launches the runtime uCode from where it left off.
5690 */
5691static int iwl_load_bsm(struct iwl_priv *priv)
5692{
5693 __le32 *image = priv->ucode_boot.v_addr;
5694 u32 len = priv->ucode_boot.len;
5695 dma_addr_t pinst;
5696 dma_addr_t pdata;
5697 u32 inst_len;
5698 u32 data_len;
5699 int rc;
5700 int i;
5701 u32 done;
5702 u32 reg_offset;
5703
5704 IWL_DEBUG_INFO("Begin load bsm\n");
5705
5706 /* make sure bootstrap program is no larger than BSM's SRAM size */
5707 if (len > IWL_MAX_BSM_SIZE)
5708 return -EINVAL;
5709
5710 /* Tell bootstrap uCode where to find the "Initialize" uCode
5711 * in host DRAM ... bits 31:0 for 3945, bits 35:4 for 4965.
5712 * NOTE: iwl_initialize_alive_start() will replace these values,
5713 * after the "initialize" uCode has run, to point to
5714 * runtime/protocol instructions and backup data cache. */
5715 pinst = priv->ucode_init.p_addr;
5716 pdata = priv->ucode_init_data.p_addr;
5717 inst_len = priv->ucode_init.len;
5718 data_len = priv->ucode_init_data.len;
5719
5720 rc = iwl_grab_restricted_access(priv);
5721 if (rc)
5722 return rc;
5723
5724 iwl_write_restricted_reg(priv, BSM_DRAM_INST_PTR_REG, pinst);
5725 iwl_write_restricted_reg(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5726 iwl_write_restricted_reg(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
5727 iwl_write_restricted_reg(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
5728
5729 /* Fill BSM memory with bootstrap instructions */
5730 for (reg_offset = BSM_SRAM_LOWER_BOUND;
5731 reg_offset < BSM_SRAM_LOWER_BOUND + len;
5732 reg_offset += sizeof(u32), image++)
5733 _iwl_write_restricted_reg(priv, reg_offset,
5734 le32_to_cpu(*image));
5735
5736 rc = iwl_verify_bsm(priv);
5737 if (rc) {
5738 iwl_release_restricted_access(priv);
5739 return rc;
5740 }
5741
5742 /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
5743 iwl_write_restricted_reg(priv, BSM_WR_MEM_SRC_REG, 0x0);
5744 iwl_write_restricted_reg(priv, BSM_WR_MEM_DST_REG,
5745 RTC_INST_LOWER_BOUND);
5746 iwl_write_restricted_reg(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
5747
5748 /* Load bootstrap code into instruction SRAM now,
5749 * to prepare to load "initialize" uCode */
5750 iwl_write_restricted_reg(priv, BSM_WR_CTRL_REG,
5751 BSM_WR_CTRL_REG_BIT_START);
5752
5753 /* Wait for load of bootstrap uCode to finish */
5754 for (i = 0; i < 100; i++) {
5755 done = iwl_read_restricted_reg(priv, BSM_WR_CTRL_REG);
5756 if (!(done & BSM_WR_CTRL_REG_BIT_START))
5757 break;
5758 udelay(10);
5759 }
5760 if (i < 100)
5761 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
5762 else {
5763 IWL_ERROR("BSM write did not complete!\n");
5764 return -EIO;
5765 }
5766
5767 /* Enable future boot loads whenever power management unit triggers it
5768 * (e.g. when powering back up after power-save shutdown) */
5769 iwl_write_restricted_reg(priv, BSM_WR_CTRL_REG,
5770 BSM_WR_CTRL_REG_BIT_START_EN);
5771
5772 iwl_release_restricted_access(priv);
5773
5774 return 0;
5775}
5776
5777static void iwl_nic_start(struct iwl_priv *priv)
5778{
5779 /* Remove all resets to allow NIC to operate */
5780 iwl_write32(priv, CSR_RESET, 0);
5781}
5782
5783/**
5784 * iwl_read_ucode - Read uCode images from disk file.
5785 *
5786 * Copy into buffers for card to fetch via bus-mastering
5787 */
5788static int iwl_read_ucode(struct iwl_priv *priv)
5789{
5790 struct iwl_ucode *ucode;
5791 int rc = 0;
5792 const struct firmware *ucode_raw;
5793 /* firmware file name contains uCode/driver compatibility version */
5794 const char *name = "iwlwifi-3945" IWL3945_UCODE_API ".ucode";
5795 u8 *src;
5796 size_t len;
5797 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
5798
5799 /* Ask kernel firmware_class module to get the boot firmware off disk.
5800 * request_firmware() is synchronous, file is in memory on return. */
5801 rc = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
5802 if (rc < 0) {
5803 IWL_ERROR("%s firmware file req failed: Reason %d\n", name, rc);
5804 goto error;
5805 }
5806
5807 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
5808 name, ucode_raw->size);
5809
5810 /* Make sure that we got at least our header! */
5811 if (ucode_raw->size < sizeof(*ucode)) {
5812 IWL_ERROR("File size way too small!\n");
5813 rc = -EINVAL;
5814 goto err_release;
5815 }
5816
5817 /* Data from ucode file: header followed by uCode images */
5818 ucode = (void *)ucode_raw->data;
5819
5820 ver = le32_to_cpu(ucode->ver);
5821 inst_size = le32_to_cpu(ucode->inst_size);
5822 data_size = le32_to_cpu(ucode->data_size);
5823 init_size = le32_to_cpu(ucode->init_size);
5824 init_data_size = le32_to_cpu(ucode->init_data_size);
5825 boot_size = le32_to_cpu(ucode->boot_size);
5826
5827 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
5828 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
5829 inst_size);
5830 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
5831 data_size);
5832 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
5833 init_size);
5834 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
5835 init_data_size);
5836 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
5837 boot_size);
5838
5839 /* Verify size of file vs. image size info in file's header */
5840 if (ucode_raw->size < sizeof(*ucode) +
5841 inst_size + data_size + init_size +
5842 init_data_size + boot_size) {
5843
5844 IWL_DEBUG_INFO("uCode file size %d too small\n",
5845 (int)ucode_raw->size);
5846 rc = -EINVAL;
5847 goto err_release;
5848 }
5849
5850 /* Verify that uCode images will fit in card's SRAM */
5851 if (inst_size > IWL_MAX_INST_SIZE) {
5852 IWL_DEBUG_INFO("uCode instr len %d too large to fit in card\n",
5853 (int)inst_size);
5854 rc = -EINVAL;
5855 goto err_release;
5856 }
5857
5858 if (data_size > IWL_MAX_DATA_SIZE) {
5859 IWL_DEBUG_INFO("uCode data len %d too large to fit in card\n",
5860 (int)data_size);
5861 rc = -EINVAL;
5862 goto err_release;
5863 }
5864 if (init_size > IWL_MAX_INST_SIZE) {
5865 IWL_DEBUG_INFO
5866 ("uCode init instr len %d too large to fit in card\n",
5867 (int)init_size);
5868 rc = -EINVAL;
5869 goto err_release;
5870 }
5871 if (init_data_size > IWL_MAX_DATA_SIZE) {
5872 IWL_DEBUG_INFO
5873 ("uCode init data len %d too large to fit in card\n",
5874 (int)init_data_size);
5875 rc = -EINVAL;
5876 goto err_release;
5877 }
5878 if (boot_size > IWL_MAX_BSM_SIZE) {
5879 IWL_DEBUG_INFO
5880 ("uCode boot instr len %d too large to fit in bsm\n",
5881 (int)boot_size);
5882 rc = -EINVAL;
5883 goto err_release;
5884 }
5885
5886 /* Allocate ucode buffers for card's bus-master loading ... */
5887
5888 /* Runtime instructions and 2 copies of data:
5889 * 1) unmodified from disk
5890 * 2) backup cache for save/restore during power-downs */
5891 priv->ucode_code.len = inst_size;
5892 priv->ucode_code.v_addr =
5893 pci_alloc_consistent(priv->pci_dev,
5894 priv->ucode_code.len,
5895 &(priv->ucode_code.p_addr));
5896
5897 priv->ucode_data.len = data_size;
5898 priv->ucode_data.v_addr =
5899 pci_alloc_consistent(priv->pci_dev,
5900 priv->ucode_data.len,
5901 &(priv->ucode_data.p_addr));
5902
5903 priv->ucode_data_backup.len = data_size;
5904 priv->ucode_data_backup.v_addr =
5905 pci_alloc_consistent(priv->pci_dev,
5906 priv->ucode_data_backup.len,
5907 &(priv->ucode_data_backup.p_addr));
5908
5909
5910 /* Initialization instructions and data */
5911 priv->ucode_init.len = init_size;
5912 priv->ucode_init.v_addr =
5913 pci_alloc_consistent(priv->pci_dev,
5914 priv->ucode_init.len,
5915 &(priv->ucode_init.p_addr));
5916
5917 priv->ucode_init_data.len = init_data_size;
5918 priv->ucode_init_data.v_addr =
5919 pci_alloc_consistent(priv->pci_dev,
5920 priv->ucode_init_data.len,
5921 &(priv->ucode_init_data.p_addr));
5922
5923 /* Bootstrap (instructions only, no data) */
5924 priv->ucode_boot.len = boot_size;
5925 priv->ucode_boot.v_addr =
5926 pci_alloc_consistent(priv->pci_dev,
5927 priv->ucode_boot.len,
5928 &(priv->ucode_boot.p_addr));
5929
5930 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
5931 !priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr ||
5932 !priv->ucode_boot.v_addr || !priv->ucode_data_backup.v_addr)
5933 goto err_pci_alloc;
5934
5935 /* Copy images into buffers for card's bus-master reads ... */
5936
5937 /* Runtime instructions (first block of data in file) */
5938 src = &ucode->data[0];
5939 len = priv->ucode_code.len;
5940 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %d\n",
5941 (int)len);
5942 memcpy(priv->ucode_code.v_addr, src, len);
5943 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
5944 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
5945
5946 /* Runtime data (2nd block)
5947 * NOTE: Copy into backup buffer will be done in iwl_up() */
5948 src = &ucode->data[inst_size];
5949 len = priv->ucode_data.len;
5950 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %d\n",
5951 (int)len);
5952 memcpy(priv->ucode_data.v_addr, src, len);
5953 memcpy(priv->ucode_data_backup.v_addr, src, len);
5954
5955 /* Initialization instructions (3rd block) */
5956 if (init_size) {
5957 src = &ucode->data[inst_size + data_size];
5958 len = priv->ucode_init.len;
5959 IWL_DEBUG_INFO("Copying (but not loading) init instr len %d\n",
5960 (int)len);
5961 memcpy(priv->ucode_init.v_addr, src, len);
5962 }
5963
5964 /* Initialization data (4th block) */
5965 if (init_data_size) {
5966 src = &ucode->data[inst_size + data_size + init_size];
5967 len = priv->ucode_init_data.len;
5968 IWL_DEBUG_INFO("Copying (but not loading) init data len %d\n",
5969 (int)len);
5970 memcpy(priv->ucode_init_data.v_addr, src, len);
5971 }
5972
5973 /* Bootstrap instructions (5th block) */
5974 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
5975 len = priv->ucode_boot.len;
5976 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %d\n",
5977 (int)len);
5978 memcpy(priv->ucode_boot.v_addr, src, len);
5979
5980 /* We have our copies now, allow OS release its copies */
5981 release_firmware(ucode_raw);
5982 return 0;
5983
5984 err_pci_alloc:
5985 IWL_ERROR("failed to allocate pci memory\n");
5986 rc = -ENOMEM;
5987 iwl_dealloc_ucode_pci(priv);
5988
5989 err_release:
5990 release_firmware(ucode_raw);
5991
5992 error:
5993 return rc;
5994}
5995
5996
5997/**
5998 * iwl_set_ucode_ptrs - Set uCode address location
5999 *
6000 * Tell initialization uCode where to find runtime uCode.
6001 *
6002 * BSM registers initially contain pointers to initialization uCode.
6003 * We need to replace them to load runtime uCode inst and data,
6004 * and to save runtime data when powering down.
6005 */
6006static int iwl_set_ucode_ptrs(struct iwl_priv *priv)
6007{
6008 dma_addr_t pinst;
6009 dma_addr_t pdata;
6010 int rc = 0;
6011 unsigned long flags;
6012
6013 /* bits 31:0 for 3945 */
6014 pinst = priv->ucode_code.p_addr;
6015 pdata = priv->ucode_data_backup.p_addr;
6016
6017 spin_lock_irqsave(&priv->lock, flags);
6018 rc = iwl_grab_restricted_access(priv);
6019 if (rc) {
6020 spin_unlock_irqrestore(&priv->lock, flags);
6021 return rc;
6022 }
6023
6024 /* Tell bootstrap uCode where to find image to load */
6025 iwl_write_restricted_reg(priv, BSM_DRAM_INST_PTR_REG, pinst);
6026 iwl_write_restricted_reg(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6027 iwl_write_restricted_reg(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
6028 priv->ucode_data.len);
6029
6030 /* Inst bytecount must be last to set up, bit 31 signals uCode
6031 * that all new ptr/size info is in place */
6032 iwl_write_restricted_reg(priv, BSM_DRAM_INST_BYTECOUNT_REG,
6033 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
6034
6035 iwl_release_restricted_access(priv);
6036
6037 spin_unlock_irqrestore(&priv->lock, flags);
6038
6039 IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
6040
6041 return rc;
6042}
6043
6044/**
01ebd063 6045 * iwl_init_alive_start - Called after REPLY_ALIVE notification received
b481de9c
ZY		 6046 *
6047 * Called after REPLY_ALIVE notification received from "initialize" uCode.
6048 *
6049 * The 4965 "initialize" ALIVE reply contains calibration data for:
6050 * Voltage, temperature, and MIMO tx gain correction, now stored in priv
6051 * (3945 does not contain this data).
6052 *
6053 * Tell "initialize" uCode to go ahead and load the runtime uCode.
6054*/
6055static void iwl_init_alive_start(struct iwl_priv *priv)
6056{
6057 /* Check alive response for "valid" sign from uCode */
6058 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
6059 /* We had an error bringing up the hardware, so take it
6060 * all the way back down so we can try again */
6061 IWL_DEBUG_INFO("Initialize Alive failed.\n");
6062 goto restart;
6063 }
6064
6065 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
6066 * This is a paranoid check, because we would not have gotten the
6067 * "initialize" alive if code weren't properly loaded. */
6068 if (iwl_verify_ucode(priv)) {
6069 /* Runtime instruction load was bad;
6070 * take it all the way back down so we can try again */
6071 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
6072 goto restart;
6073 }
6074
6075 /* Send pointers to protocol/runtime uCode image ... init code will
6076 * load and launch runtime uCode, which will send us another "Alive"
6077 * notification. */
6078 IWL_DEBUG_INFO("Initialization Alive received.\n");
6079 if (iwl_set_ucode_ptrs(priv)) {
6080 /* Runtime instruction load won't happen;
6081 * take it all the way back down so we can try again */
6082 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
6083 goto restart;
6084 }
6085 return;
6086
6087 restart:
6088 queue_work(priv->workqueue, &priv->restart);
6089}
6090
6091
6092/**
6093 * iwl_alive_start - called after REPLY_ALIVE notification received
6094 * from protocol/runtime uCode (initialization uCode's
6095 * Alive gets handled by iwl_init_alive_start()).
6096 */
6097static void iwl_alive_start(struct iwl_priv *priv)
6098{
6099 int rc = 0;
6100 int thermal_spin = 0;
6101 u32 rfkill;
6102
6103 IWL_DEBUG_INFO("Runtime Alive received.\n");
6104
6105 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
6106 /* We had an error bringing up the hardware, so take it
6107 * all the way back down so we can try again */
6108 IWL_DEBUG_INFO("Alive failed.\n");
6109 goto restart;
6110 }
6111
6112 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
6113 * This is a paranoid check, because we would not have gotten the
6114 * "runtime" alive if code weren't properly loaded. */
6115 if (iwl_verify_ucode(priv)) {
6116 /* Runtime instruction load was bad;
6117 * take it all the way back down so we can try again */
6118 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
6119 goto restart;
6120 }
6121
6122 iwl_clear_stations_table(priv);
6123
6124 rc = iwl_grab_restricted_access(priv);
6125 if (rc) {
6126 IWL_WARNING("Can not read rfkill status from adapter\n");
6127 return;
6128 }
6129
6130 rfkill = iwl_read_restricted_reg(priv, APMG_RFKILL_REG);
6131 IWL_DEBUG_INFO("RFKILL status: 0x%x\n", rfkill);
6132 iwl_release_restricted_access(priv);
6133
6134 if (rfkill & 0x1) {
6135 clear_bit(STATUS_RF_KILL_HW, &priv->status);
6136 /* if rfkill is not on, then wait for thermal
6137 * sensor in adapter to kick in */
6138 while (iwl_hw_get_temperature(priv) == 0) {
6139 thermal_spin++;
6140 udelay(10);
6141 }
6142
6143 if (thermal_spin)
6144 IWL_DEBUG_INFO("Thermal calibration took %dus\n",
6145 thermal_spin * 10);
6146 } else
6147 set_bit(STATUS_RF_KILL_HW, &priv->status);
6148
6149 /* After the ALIVE response, we can process host commands */
6150 set_bit(STATUS_ALIVE, &priv->status);
6151
6152 /* Clear out the uCode error bit if it is set */
6153 clear_bit(STATUS_FW_ERROR, &priv->status);
6154
6155 rc = iwl_init_channel_map(priv);
6156 if (rc) {
6157 IWL_ERROR("initializing regulatory failed: %d\n", rc);
6158 return;
6159 }
6160
6161 iwl_init_geos(priv);
6162
6163 if (iwl_is_rfkill(priv))
6164 return;
6165
6166 if (!priv->mac80211_registered) {
6167 /* Unlock so any user space entry points can call back into
6168 * the driver without a deadlock... */
6169 mutex_unlock(&priv->mutex);
6170 iwl_rate_control_register(priv->hw);
6171 rc = ieee80211_register_hw(priv->hw);
6172 priv->hw->conf.beacon_int = 100;
6173 mutex_lock(&priv->mutex);
6174
6175 if (rc) {
a5acc379 6176 iwl_rate_control_unregister(priv->hw);
b481de9c
ZY		 6177 IWL_ERROR("Failed to register network "
6178 "device (error %d)\n", rc);
6179 return;
6180 }
6181
6182 priv->mac80211_registered = 1;
6183
6184 iwl_reset_channel_flag(priv);
6185 } else
6186 ieee80211_start_queues(priv->hw);
6187
6188 priv->active_rate = priv->rates_mask;
6189 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
6190
6191 iwl_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
6192
6193 if (iwl_is_associated(priv)) {
6194 struct iwl_rxon_cmd *active_rxon =
6195 (struct iwl_rxon_cmd *)(&priv->active_rxon);
6196
6197 memcpy(&priv->staging_rxon, &priv->active_rxon,
6198 sizeof(priv->staging_rxon));
6199 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6200 } else {
6201 /* Initialize our rx_config data */
6202 iwl_connection_init_rx_config(priv);
6203 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
6204 }
6205
6206 /* Configure BT coexistence */
6207 iwl_send_bt_config(priv);
6208
6209 /* Configure the adapter for unassociated operation */
6210 iwl_commit_rxon(priv);
6211
6212 /* At this point, the NIC is initialized and operational */
6213 priv->notif_missed_beacons = 0;
6214 set_bit(STATUS_READY, &priv->status);
6215
6216 iwl3945_reg_txpower_periodic(priv);
6217
6218 IWL_DEBUG_INFO("ALIVE processing complete.\n");
6219
6220 if (priv->error_recovering)
6221 iwl_error_recovery(priv);
6222
6223 return;
6224
6225 restart:
6226 queue_work(priv->workqueue, &priv->restart);
6227}
6228
6229static void iwl_cancel_deferred_work(struct iwl_priv *priv);
6230
6231static void __iwl_down(struct iwl_priv *priv)
6232{
6233 unsigned long flags;
6234 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
6235 struct ieee80211_conf *conf = NULL;
6236
6237 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
6238
6239 conf = ieee80211_get_hw_conf(priv->hw);
6240
6241 if (!exit_pending)
6242 set_bit(STATUS_EXIT_PENDING, &priv->status);
6243
6244 iwl_clear_stations_table(priv);
6245
6246 /* Unblock any waiting calls */
6247 wake_up_interruptible_all(&priv->wait_command_queue);
6248
b481de9c
ZY		 6249 /* Wipe out the EXIT_PENDING status bit if we are not actually
6250 * exiting the module */
6251 if (!exit_pending)
6252 clear_bit(STATUS_EXIT_PENDING, &priv->status);
6253
6254 /* stop and reset the on-board processor */
6255 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
6256
6257 /* tell the device to stop sending interrupts */
6258 iwl_disable_interrupts(priv);
6259
6260 if (priv->mac80211_registered)
6261 ieee80211_stop_queues(priv->hw);
6262
6263 /* If we have not previously called iwl_init() then
6264 * clear all bits but the RF Kill and SUSPEND bits and return */
6265 if (!iwl_is_init(priv)) {
6266 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6267 STATUS_RF_KILL_HW |
6268 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6269 STATUS_RF_KILL_SW |
6270 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6271 STATUS_IN_SUSPEND;
6272 goto exit;
6273 }
6274
6275 /* ...otherwise clear out all the status bits but the RF Kill and
6276 * SUSPEND bits and continue taking the NIC down. */
6277 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6278 STATUS_RF_KILL_HW |
6279 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6280 STATUS_RF_KILL_SW |
6281 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6282 STATUS_IN_SUSPEND |
6283 test_bit(STATUS_FW_ERROR, &priv->status) <<
6284 STATUS_FW_ERROR;
6285
6286 spin_lock_irqsave(&priv->lock, flags);
6287 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
6288 spin_unlock_irqrestore(&priv->lock, flags);
6289
6290 iwl_hw_txq_ctx_stop(priv);
6291 iwl_hw_rxq_stop(priv);
6292
6293 spin_lock_irqsave(&priv->lock, flags);
6294 if (!iwl_grab_restricted_access(priv)) {
6295 iwl_write_restricted_reg(priv, APMG_CLK_DIS_REG,
6296 APMG_CLK_VAL_DMA_CLK_RQT);
6297 iwl_release_restricted_access(priv);
6298 }
6299 spin_unlock_irqrestore(&priv->lock, flags);
6300
6301 udelay(5);
6302
6303 iwl_hw_nic_stop_master(priv);
6304 iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
6305 iwl_hw_nic_reset(priv);
6306
6307 exit:
6308 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
6309
6310 if (priv->ibss_beacon)
6311 dev_kfree_skb(priv->ibss_beacon);
6312 priv->ibss_beacon = NULL;
6313
6314 /* clear out any free frames */
6315 iwl_clear_free_frames(priv);
6316}
6317
6318static void iwl_down(struct iwl_priv *priv)
6319{
6320 mutex_lock(&priv->mutex);
6321 __iwl_down(priv);
6322 mutex_unlock(&priv->mutex);
b24d22b1
ZY		 6323
6324 iwl_cancel_deferred_work(priv);
b481de9c
ZY		 6325}
6326
6327#define MAX_HW_RESTARTS 5
6328
6329static int __iwl_up(struct iwl_priv *priv)
6330{
0795af57 6331 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 6332 int rc, i;
6333
6334 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6335 IWL_WARNING("Exit pending; will not bring the NIC up\n");
6336 return -EIO;
6337 }
6338
6339 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
6340 IWL_WARNING("Radio disabled by SW RF kill (module "
6341 "parameter)\n");
6342 return 0;
6343 }
6344
a781cf94
RC		 6345 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
6346 IWL_ERROR("ucode not available for device bringup\n");
6347 return -EIO;
6348 }
6349
b481de9c
ZY		 6350 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
6351
6352 rc = iwl_hw_nic_init(priv);
6353 if (rc) {
6354 IWL_ERROR("Unable to int nic\n");
6355 return rc;
6356 }
6357
6358 /* make sure rfkill handshake bits are cleared */
6359 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6360 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
6361 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
6362
6363 /* clear (again), then enable host interrupts */
6364 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
6365 iwl_enable_interrupts(priv);
6366
6367 /* really make sure rfkill handshake bits are cleared */
6368 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6369 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6370
6371 /* Copy original ucode data image from disk into backup cache.
6372 * This will be used to initialize the on-board processor's
6373 * data SRAM for a clean start when the runtime program first loads. */
6374 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
6375 priv->ucode_data.len);
6376
6377 for (i = 0; i < MAX_HW_RESTARTS; i++) {
6378
6379 iwl_clear_stations_table(priv);
6380
6381 /* load bootstrap state machine,
6382 * load bootstrap program into processor's memory,
6383 * prepare to load the "initialize" uCode */
6384 rc = iwl_load_bsm(priv);
6385
6386 if (rc) {
6387 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
6388 continue;
6389 }
6390
6391 /* start card; "initialize" will load runtime ucode */
6392 iwl_nic_start(priv);
6393
6394 /* MAC Address location in EEPROM same for 3945/4965 */
6395 get_eeprom_mac(priv, priv->mac_addr);
0795af57
JP		 6396 IWL_DEBUG_INFO("MAC address: %s\n",
6397 print_mac(mac, priv->mac_addr));
b481de9c
ZY		 6398
6399 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
6400
6401 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
6402
6403 return 0;
6404 }
6405
6406 set_bit(STATUS_EXIT_PENDING, &priv->status);
6407 __iwl_down(priv);
6408
6409 /* tried to restart and config the device for as long as our
6410 * patience could withstand */
6411 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
6412 return -EIO;
6413}
6414
6415
6416/*****************************************************************************
6417 *
6418 * Workqueue callbacks
6419 *
6420 *****************************************************************************/
6421
6422static void iwl_bg_init_alive_start(struct work_struct *data)
6423{
6424 struct iwl_priv *priv =
6425 container_of(data, struct iwl_priv, init_alive_start.work);
6426
6427 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6428 return;
6429
6430 mutex_lock(&priv->mutex);
6431 iwl_init_alive_start(priv);
6432 mutex_unlock(&priv->mutex);
6433}
6434
6435static void iwl_bg_alive_start(struct work_struct *data)
6436{
6437 struct iwl_priv *priv =
6438 container_of(data, struct iwl_priv, alive_start.work);
6439
6440 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6441 return;
6442
6443 mutex_lock(&priv->mutex);
6444 iwl_alive_start(priv);
6445 mutex_unlock(&priv->mutex);
6446}
6447
6448static void iwl_bg_rf_kill(struct work_struct *work)
6449{
6450 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
6451
6452 wake_up_interruptible(&priv->wait_command_queue);
6453
6454 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6455 return;
6456
6457 mutex_lock(&priv->mutex);
6458
6459 if (!iwl_is_rfkill(priv)) {
6460 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
6461 "HW and/or SW RF Kill no longer active, restarting "
6462 "device\n");
6463 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6464 queue_work(priv->workqueue, &priv->restart);
6465 } else {
6466
6467 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
6468 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
6469 "disabled by SW switch\n");
6470 else
6471 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
6472 "Kill switch must be turned off for "
6473 "wireless networking to work.\n");
6474 }
6475 mutex_unlock(&priv->mutex);
6476}
6477
6478#define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
6479
6480static void iwl_bg_scan_check(struct work_struct *data)
6481{
6482 struct iwl_priv *priv =
6483 container_of(data, struct iwl_priv, scan_check.work);
6484
6485 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6486 return;
6487
6488 mutex_lock(&priv->mutex);
6489 if (test_bit(STATUS_SCANNING, &priv->status) ||
6490 test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6491 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
6492 "Scan completion watchdog resetting adapter (%dms)\n",
6493 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
15e869d8 6494
b481de9c 6495 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
15e869d8 6496 iwl_send_scan_abort(priv);
b481de9c
ZY		 6497 }
6498 mutex_unlock(&priv->mutex);
6499}
6500
6501static void iwl_bg_request_scan(struct work_struct *data)
6502{
6503 struct iwl_priv *priv =
6504 container_of(data, struct iwl_priv, request_scan);
6505 struct iwl_host_cmd cmd = {
6506 .id = REPLY_SCAN_CMD,
6507 .len = sizeof(struct iwl_scan_cmd),
6508 .meta.flags = CMD_SIZE_HUGE,
6509 };
6510 int rc = 0;
6511 struct iwl_scan_cmd *scan;
6512 struct ieee80211_conf *conf = NULL;
6513 u8 direct_mask;
6514 int phymode;
6515
6516 conf = ieee80211_get_hw_conf(priv->hw);
6517
6518 mutex_lock(&priv->mutex);
6519
6520 if (!iwl_is_ready(priv)) {
6521 IWL_WARNING("request scan called when driver not ready.\n");
6522 goto done;
6523 }
6524
6525 /* Make sure the scan wasn't cancelled before this queued work
6526 * was given the chance to run... */
6527 if (!test_bit(STATUS_SCANNING, &priv->status))
6528 goto done;
6529
6530 /* This should never be called or scheduled if there is currently
6531 * a scan active in the hardware. */
6532 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
6533 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6534 "Ignoring second request.\n");
6535 rc = -EIO;
6536 goto done;
6537 }
6538
6539 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6540 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6541 goto done;
6542 }
6543
6544 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6545 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
6546 goto done;
6547 }
6548
6549 if (iwl_is_rfkill(priv)) {
6550 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6551 goto done;
6552 }
6553
6554 if (!test_bit(STATUS_READY, &priv->status)) {
6555 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
6556 goto done;
6557 }
6558
6559 if (!priv->scan_bands) {
6560 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6561 goto done;
6562 }
6563
6564 if (!priv->scan) {
6565 priv->scan = kmalloc(sizeof(struct iwl_scan_cmd) +
6566 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
6567 if (!priv->scan) {
6568 rc = -ENOMEM;
6569 goto done;
6570 }
6571 }
6572 scan = priv->scan;
6573 memset(scan, 0, sizeof(struct iwl_scan_cmd) + IWL_MAX_SCAN_SIZE);
6574
6575 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
6576 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
6577
6578 if (iwl_is_associated(priv)) {
6579 u16 interval = 0;
6580 u32 extra;
6581 u32 suspend_time = 100;
6582 u32 scan_suspend_time = 100;
6583 unsigned long flags;
6584
6585 IWL_DEBUG_INFO("Scanning while associated...\n");
6586
6587 spin_lock_irqsave(&priv->lock, flags);
6588 interval = priv->beacon_int;
6589 spin_unlock_irqrestore(&priv->lock, flags);
6590
6591 scan->suspend_time = 0;
15e869d8 6592 scan->max_out_time = cpu_to_le32(200 * 1024);
b481de9c
ZY		 6593 if (!interval)
6594 interval = suspend_time;
6595 /*
6596 * suspend time format:
6597 * 0-19: beacon interval in usec (time before exec.)
6598 * 20-23: 0
6599 * 24-31: number of beacons (suspend between channels)
6600 */
6601
6602 extra = (suspend_time / interval) << 24;
6603 scan_suspend_time = 0xFF0FFFFF &
6604 (extra | ((suspend_time % interval) * 1024));
6605
6606 scan->suspend_time = cpu_to_le32(scan_suspend_time);
6607 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
6608 scan_suspend_time, interval);
6609 }
6610
6611 /* We should add the ability for user to lock to PASSIVE ONLY */
6612 if (priv->one_direct_scan) {
6613 IWL_DEBUG_SCAN
6614 ("Kicking off one direct scan for '%s'\n",
6615 iwl_escape_essid(priv->direct_ssid,
6616 priv->direct_ssid_len));
6617 scan->direct_scan[0].id = WLAN_EID_SSID;
6618 scan->direct_scan[0].len = priv->direct_ssid_len;
6619 memcpy(scan->direct_scan[0].ssid,
6620 priv->direct_ssid, priv->direct_ssid_len);
6621 direct_mask = 1;
6ef89d0a 6622 } else if (!iwl_is_associated(priv) && priv->essid_len) {
b481de9c
ZY		 6623 scan->direct_scan[0].id = WLAN_EID_SSID;
6624 scan->direct_scan[0].len = priv->essid_len;
6625 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
6626 direct_mask = 1;
6627 } else
6628 direct_mask = 0;
6629
6630 /* We don't build a direct scan probe request; the uCode will do
6631 * that based on the direct_mask added to each channel entry */
6632 scan->tx_cmd.len = cpu_to_le16(
6633 iwl_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
6634 IWL_MAX_SCAN_SIZE - sizeof(scan), 0));
6635 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
6636 scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
6637 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
6638
6639 /* flags + rate selection */
6640
6641 switch (priv->scan_bands) {
6642 case 2:
6643 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
6644 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
6645 scan->good_CRC_th = 0;
6646 phymode = MODE_IEEE80211G;
6647 break;
6648
6649 case 1:
6650 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
6651 scan->good_CRC_th = IWL_GOOD_CRC_TH;
6652 phymode = MODE_IEEE80211A;
6653 break;
6654
6655 default:
6656 IWL_WARNING("Invalid scan band count\n");
6657 goto done;
6658 }
6659
6660 /* select Rx antennas */
6661 scan->flags |= iwl3945_get_antenna_flags(priv);
6662
6663 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
6664 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
6665
6666 if (direct_mask)
6667 IWL_DEBUG_SCAN
6668 ("Initiating direct scan for %s.\n",
6669 iwl_escape_essid(priv->essid, priv->essid_len));
6670 else
6671 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
6672
6673 scan->channel_count =
6674 iwl_get_channels_for_scan(
6675 priv, phymode, 1, /* active */
6676 direct_mask,
6677 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
6678
6679 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
6680 scan->channel_count * sizeof(struct iwl_scan_channel);
6681 cmd.data = scan;
6682 scan->len = cpu_to_le16(cmd.len);
6683
6684 set_bit(STATUS_SCAN_HW, &priv->status);
6685 rc = iwl_send_cmd_sync(priv, &cmd);
6686 if (rc)
6687 goto done;
6688
6689 queue_delayed_work(priv->workqueue, &priv->scan_check,
6690 IWL_SCAN_CHECK_WATCHDOG);
6691
6692 mutex_unlock(&priv->mutex);
6693 return;
6694
6695 done:
01ebd063 6696 /* inform mac80211 scan aborted */
b481de9c
ZY		 6697 queue_work(priv->workqueue, &priv->scan_completed);
6698 mutex_unlock(&priv->mutex);
6699}
6700
6701static void iwl_bg_up(struct work_struct *data)
6702{
6703 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
6704
6705 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6706 return;
6707
6708 mutex_lock(&priv->mutex);
6709 __iwl_up(priv);
6710 mutex_unlock(&priv->mutex);
6711}
6712
6713static void iwl_bg_restart(struct work_struct *data)
6714{
6715 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
6716
6717 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6718 return;
6719
6720 iwl_down(priv);
6721 queue_work(priv->workqueue, &priv->up);
6722}
6723
6724static void iwl_bg_rx_replenish(struct work_struct *data)
6725{
6726 struct iwl_priv *priv =
6727 container_of(data, struct iwl_priv, rx_replenish);
6728
6729 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6730 return;
6731
6732 mutex_lock(&priv->mutex);
6733 iwl_rx_replenish(priv);
6734 mutex_unlock(&priv->mutex);
6735}
6736
6737static void iwl_bg_post_associate(struct work_struct *data)
6738{
6739 struct iwl_priv *priv = container_of(data, struct iwl_priv,
6740 post_associate.work);
6741
6742 int rc = 0;
6743 struct ieee80211_conf *conf = NULL;
0795af57 6744 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 6745
6746 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
6747 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
6748 return;
6749 }
6750
6751
0795af57
JP		 6752 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
6753 priv->assoc_id,
6754 print_mac(mac, priv->active_rxon.bssid_addr));
b481de9c
ZY		 6755
6756 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6757 return;
6758
6759 mutex_lock(&priv->mutex);
6760
6ef89d0a
MA		 6761 if (!priv->interface_id || !priv->is_open) {
6762 mutex_unlock(&priv->mutex);
6763 return;
6764 }
15e869d8
MA		 6765 iwl_scan_cancel_timeout(priv, 200);
6766
b481de9c
ZY		 6767 conf = ieee80211_get_hw_conf(priv->hw);
6768
6769 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6770 iwl_commit_rxon(priv);
6771
6772 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
6773 iwl_setup_rxon_timing(priv);
6774 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6775 sizeof(priv->rxon_timing), &priv->rxon_timing);
6776 if (rc)
6777 IWL_WARNING("REPLY_RXON_TIMING failed - "
6778 "Attempting to continue.\n");
6779
6780 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6781
6782 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6783
6784 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
6785 priv->assoc_id, priv->beacon_int);
6786
6787 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6788 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6789 else
6790 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6791
6792 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6793 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
6794 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
6795 else
6796 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6797
6798 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6799 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6800
6801 }
6802
6803 iwl_commit_rxon(priv);
6804
6805 switch (priv->iw_mode) {
6806 case IEEE80211_IF_TYPE_STA:
6807 iwl_rate_scale_init(priv->hw, IWL_AP_ID);
6808 break;
6809
6810 case IEEE80211_IF_TYPE_IBSS:
6811
6812 /* clear out the station table */
6813 iwl_clear_stations_table(priv);
6814
556f8db7
ZY		 6815 iwl_add_station(priv, BROADCAST_ADDR, 0, 0);
6816 iwl_add_station(priv, priv->bssid, 0, 0);
b481de9c
ZY		 6817 iwl3945_sync_sta(priv, IWL_STA_ID,
6818 (priv->phymode == MODE_IEEE80211A)?
6819 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
6820 CMD_ASYNC);
6821 iwl_rate_scale_init(priv->hw, IWL_STA_ID);
6822 iwl_send_beacon_cmd(priv);
6823
6824 break;
6825
6826 default:
6827 IWL_ERROR("%s Should not be called in %d mode\n",
6828 __FUNCTION__, priv->iw_mode);
6829 break;
6830 }
6831
6832 iwl_sequence_reset(priv);
6833
6834#ifdef CONFIG_IWLWIFI_QOS
6835 iwl_activate_qos(priv, 0);
6836#endif /* CONFIG_IWLWIFI_QOS */
6837 mutex_unlock(&priv->mutex);
6838}
6839
6840static void iwl_bg_abort_scan(struct work_struct *work)
6841{
6842 struct iwl_priv *priv = container_of(work, struct iwl_priv,
6843 abort_scan);
6844
6845 if (!iwl_is_ready(priv))
6846 return;
6847
6848 mutex_lock(&priv->mutex);
6849
6850 set_bit(STATUS_SCAN_ABORTING, &priv->status);
6851 iwl_send_scan_abort(priv);
6852
6853 mutex_unlock(&priv->mutex);
6854}
6855
6856static void iwl_bg_scan_completed(struct work_struct *work)
6857{
6858 struct iwl_priv *priv =
6859 container_of(work, struct iwl_priv, scan_completed);
6860
6861 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
6862
6863 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6864 return;
6865
6866 ieee80211_scan_completed(priv->hw);
6867
6868 /* Since setting the TXPOWER may have been deferred while
6869 * performing the scan, fire one off */
6870 mutex_lock(&priv->mutex);
6871 iwl_hw_reg_send_txpower(priv);
6872 mutex_unlock(&priv->mutex);
6873}
6874
6875/*****************************************************************************
6876 *
6877 * mac80211 entry point functions
6878 *
6879 *****************************************************************************/
6880
4150c572 6881static int iwl_mac_start(struct ieee80211_hw *hw)
b481de9c
ZY		 6882{
6883 struct iwl_priv *priv = hw->priv;
6884
6885 IWL_DEBUG_MAC80211("enter\n");
6886
6887 /* we should be verifying the device is ready to be opened */
6888 mutex_lock(&priv->mutex);
6889
6890 priv->is_open = 1;
6891
6892 if (!iwl_is_rfkill(priv))
6893 ieee80211_start_queues(priv->hw);
6894
6895 mutex_unlock(&priv->mutex);
6896 IWL_DEBUG_MAC80211("leave\n");
6897 return 0;
6898}
6899
4150c572 6900static void iwl_mac_stop(struct ieee80211_hw *hw)
b481de9c
ZY		 6901{
6902 struct iwl_priv *priv = hw->priv;
6903
6904 IWL_DEBUG_MAC80211("enter\n");
6ef89d0a
MA		 6905
6906
6907 mutex_lock(&priv->mutex);
6908 /* stop mac, cancel any scan request and clear
6909 * RXON_FILTER_ASSOC_MSK BIT
6910 */
b481de9c 6911 priv->is_open = 0;
6ef89d0a
MA		 6912 iwl_scan_cancel_timeout(priv, 100);
6913 cancel_delayed_work(&priv->post_associate);
6914 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6915 iwl_commit_rxon(priv);
6916 mutex_unlock(&priv->mutex);
6917
b481de9c 6918 IWL_DEBUG_MAC80211("leave\n");
b481de9c
ZY		 6919}
6920
6921static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
6922 struct ieee80211_tx_control *ctl)
6923{
6924 struct iwl_priv *priv = hw->priv;
6925
6926 IWL_DEBUG_MAC80211("enter\n");
6927
6928 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
6929 IWL_DEBUG_MAC80211("leave - monitor\n");
6930 return -1;
6931 }
6932
6933 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
6934 ctl->tx_rate);
6935
6936 if (iwl_tx_skb(priv, skb, ctl))
6937 dev_kfree_skb_any(skb);
6938
6939 IWL_DEBUG_MAC80211("leave\n");
6940 return 0;
6941}
6942
6943static int iwl_mac_add_interface(struct ieee80211_hw *hw,
6944 struct ieee80211_if_init_conf *conf)
6945{
6946 struct iwl_priv *priv = hw->priv;
6947 unsigned long flags;
0795af57 6948 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 6949
6950 IWL_DEBUG_MAC80211("enter: id %d, type %d\n", conf->if_id, conf->type);
b481de9c
ZY		 6951
6952 if (priv->interface_id) {
6953 IWL_DEBUG_MAC80211("leave - interface_id != 0\n");
864792e3 6954 return -EOPNOTSUPP;
b481de9c
ZY		 6955 }
6956
6957 spin_lock_irqsave(&priv->lock, flags);
6958 priv->interface_id = conf->if_id;
6959
6960 spin_unlock_irqrestore(&priv->lock, flags);
6961
6962 mutex_lock(&priv->mutex);
864792e3
TW		 6963
6964 if (conf->mac_addr) {
6965 IWL_DEBUG_MAC80211("Set: %s\n", print_mac(mac, conf->mac_addr));
6966 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
6967 }
6968
b481de9c
ZY		 6969 iwl_set_mode(priv, conf->type);
6970
6971 IWL_DEBUG_MAC80211("leave\n");
6972 mutex_unlock(&priv->mutex);
6973
6974 return 0;
6975}
6976
6977/**
6978 * iwl_mac_config - mac80211 config callback
6979 *
6980 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
6981 * be set inappropriately and the driver currently sets the hardware up to
6982 * use it whenever needed.
6983 */
6984static int iwl_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
6985{
6986 struct iwl_priv *priv = hw->priv;
6987 const struct iwl_channel_info *ch_info;
6988 unsigned long flags;
6989
6990 mutex_lock(&priv->mutex);
6991 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel);
6992
6993 if (!iwl_is_ready(priv)) {
6994 IWL_DEBUG_MAC80211("leave - not ready\n");
6995 mutex_unlock(&priv->mutex);
6996 return -EIO;
6997 }
6998
6999 /* TODO: Figure out how to get ieee80211_local->sta_scanning w/ only
01ebd063 7000 * what is exposed through include/ declarations */
b481de9c
ZY		 7001 if (unlikely(!iwl_param_disable_hw_scan &&
7002 test_bit(STATUS_SCANNING, &priv->status))) {
7003 IWL_DEBUG_MAC80211("leave - scanning\n");
7004 mutex_unlock(&priv->mutex);
7005 return 0;
7006 }
7007
7008 spin_lock_irqsave(&priv->lock, flags);
7009
7010 ch_info = iwl_get_channel_info(priv, conf->phymode, conf->channel);
7011 if (!is_channel_valid(ch_info)) {
7012 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this SKU.\n",
7013 conf->channel, conf->phymode);
7014 IWL_DEBUG_MAC80211("leave - invalid channel\n");
7015 spin_unlock_irqrestore(&priv->lock, flags);
7016 mutex_unlock(&priv->mutex);
7017 return -EINVAL;
7018 }
7019
7020 iwl_set_rxon_channel(priv, conf->phymode, conf->channel);
7021
7022 iwl_set_flags_for_phymode(priv, conf->phymode);
7023
7024 /* The list of supported rates and rate mask can be different
7025 * for each phymode; since the phymode may have changed, reset
7026 * the rate mask to what mac80211 lists */
7027 iwl_set_rate(priv);
7028
7029 spin_unlock_irqrestore(&priv->lock, flags);
7030
7031#ifdef IEEE80211_CONF_CHANNEL_SWITCH
7032 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
7033 iwl_hw_channel_switch(priv, conf->channel);
7034 mutex_unlock(&priv->mutex);
7035 return 0;
7036 }
7037#endif
7038
7039 iwl_radio_kill_sw(priv, !conf->radio_enabled);
7040
7041 if (!conf->radio_enabled) {
7042 IWL_DEBUG_MAC80211("leave - radio disabled\n");
7043 mutex_unlock(&priv->mutex);
7044 return 0;
7045 }
7046
7047 if (iwl_is_rfkill(priv)) {
7048 IWL_DEBUG_MAC80211("leave - RF kill\n");
7049 mutex_unlock(&priv->mutex);
7050 return -EIO;
7051 }
7052
7053 iwl_set_rate(priv);
7054
7055 if (memcmp(&priv->active_rxon,
7056 &priv->staging_rxon, sizeof(priv->staging_rxon)))
7057 iwl_commit_rxon(priv);
7058 else
7059 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
7060
7061 IWL_DEBUG_MAC80211("leave\n");
7062
7063 mutex_unlock(&priv->mutex);
7064
7065 return 0;
7066}
7067
7068static void iwl_config_ap(struct iwl_priv *priv)
7069{
7070 int rc = 0;
7071
7072 if (priv->status & STATUS_EXIT_PENDING)
7073 return;
7074
7075 /* The following should be done only at AP bring up */
7076 if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
7077
7078 /* RXON - unassoc (to set timing command) */
7079 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7080 iwl_commit_rxon(priv);
7081
7082 /* RXON Timing */
7083 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
7084 iwl_setup_rxon_timing(priv);
7085 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7086 sizeof(priv->rxon_timing), &priv->rxon_timing);
7087 if (rc)
7088 IWL_WARNING("REPLY_RXON_TIMING failed - "
7089 "Attempting to continue.\n");
7090
7091 /* FIXME: what should be the assoc_id for AP? */
7092 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7093 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7094 priv->staging_rxon.flags |=
7095 RXON_FLG_SHORT_PREAMBLE_MSK;
7096 else
7097 priv->staging_rxon.flags &=
7098 ~RXON_FLG_SHORT_PREAMBLE_MSK;
7099
7100 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7101 if (priv->assoc_capability &
7102 WLAN_CAPABILITY_SHORT_SLOT_TIME)
7103 priv->staging_rxon.flags |=
7104 RXON_FLG_SHORT_SLOT_MSK;
7105 else
7106 priv->staging_rxon.flags &=
7107 ~RXON_FLG_SHORT_SLOT_MSK;
7108
7109 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7110 priv->staging_rxon.flags &=
7111 ~RXON_FLG_SHORT_SLOT_MSK;
7112 }
7113 /* restore RXON assoc */
7114 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7115 iwl_commit_rxon(priv);
556f8db7
ZY		 7116 iwl_add_station(priv, BROADCAST_ADDR, 0, 0);
7117 }
7118 iwl_send_beacon_cmd(priv);
b481de9c
ZY		 7119
7120 /* FIXME - we need to add code here to detect a totally new
7121 * configuration, reset the AP, unassoc, rxon timing, assoc,
7122 * clear sta table, add BCAST sta... */
7123}
7124
7125static int iwl_mac_config_interface(struct ieee80211_hw *hw, int if_id,
7126 struct ieee80211_if_conf *conf)
7127{
7128 struct iwl_priv *priv = hw->priv;
0795af57 7129 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 7130 unsigned long flags;
7131 int rc;
7132
7133 if (conf == NULL)
7134 return -EIO;
7135
4150c572
JB		 7136 /* XXX: this MUST use conf->mac_addr */
7137
b481de9c
ZY		 7138 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
7139 (!conf->beacon || !conf->ssid_len)) {
7140 IWL_DEBUG_MAC80211
7141 ("Leaving in AP mode because HostAPD is not ready.\n");
7142 return 0;
7143 }
7144
7145 mutex_lock(&priv->mutex);
7146
7147 IWL_DEBUG_MAC80211("enter: interface id %d\n", if_id);
7148 if (conf->bssid)
0795af57
JP		 7149 IWL_DEBUG_MAC80211("bssid: %s\n",
7150 print_mac(mac, conf->bssid));
b481de9c 7151
4150c572
JB		 7152/*
7153 * very dubious code was here; the probe filtering flag is never set:
7154 *
b481de9c
ZY		 7155 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
7156 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
4150c572
JB		 7157 */
7158 if (unlikely(test_bit(STATUS_SCANNING, &priv->status))) {
b481de9c
ZY		 7159 IWL_DEBUG_MAC80211("leave - scanning\n");
7160 mutex_unlock(&priv->mutex);
7161 return 0;
7162 }
7163
7164 if (priv->interface_id != if_id) {
7165 IWL_DEBUG_MAC80211("leave - interface_id != if_id\n");
7166 mutex_unlock(&priv->mutex);
7167 return 0;
7168 }
7169
7170 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7171 if (!conf->bssid) {
7172 conf->bssid = priv->mac_addr;
7173 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
0795af57
JP		 7174 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
7175 print_mac(mac, conf->bssid));
b481de9c
ZY		 7176 }
7177 if (priv->ibss_beacon)
7178 dev_kfree_skb(priv->ibss_beacon);
7179
7180 priv->ibss_beacon = conf->beacon;
7181 }
7182
7183 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
7184 !is_multicast_ether_addr(conf->bssid)) {
7185 /* If there is currently a HW scan going on in the background
7186 * then we need to cancel it else the RXON below will fail. */
7187 if (iwl_scan_cancel_timeout(priv, 100)) {
7188 IWL_WARNING("Aborted scan still in progress "
7189 "after 100ms\n");
7190 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
7191 mutex_unlock(&priv->mutex);
7192 return -EAGAIN;
7193 }
7194 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
7195
7196 /* TODO: Audit driver for usage of these members and see
7197 * if mac80211 deprecates them (priv->bssid looks like it
7198 * shouldn't be there, but I haven't scanned the IBSS code
7199 * to verify) - jpk */
7200 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
7201
7202 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7203 iwl_config_ap(priv);
7204 else {
b481de9c
ZY		 7205 rc = iwl_commit_rxon(priv);
7206 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
556f8db7
ZY		 7207 iwl_add_station(priv,
7208 priv->active_rxon.bssid_addr, 1, 0);
b481de9c
ZY		 7209 }
7210
7211 } else {
15e869d8 7212 iwl_scan_cancel_timeout(priv, 100);
b481de9c
ZY		 7213 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7214 iwl_commit_rxon(priv);
7215 }
7216
7217 spin_lock_irqsave(&priv->lock, flags);
7218 if (!conf->ssid_len)
7219 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7220 else
7221 memcpy(priv->essid, conf->ssid, conf->ssid_len);
7222
7223 priv->essid_len = conf->ssid_len;
7224 spin_unlock_irqrestore(&priv->lock, flags);
7225
7226 IWL_DEBUG_MAC80211("leave\n");
7227 mutex_unlock(&priv->mutex);
7228
7229 return 0;
7230}
7231
4150c572
JB		 7232static void iwl_configure_filter(struct ieee80211_hw *hw,
7233 unsigned int changed_flags,
7234 unsigned int *total_flags,
7235 int mc_count, struct dev_addr_list *mc_list)
7236{
7237 /*
7238 * XXX: dummy
7239 * see also iwl_connection_init_rx_config
7240 */
7241 *total_flags = 0;
7242}
7243
b481de9c
ZY		 7244static void iwl_mac_remove_interface(struct ieee80211_hw *hw,
7245 struct ieee80211_if_init_conf *conf)
7246{
7247 struct iwl_priv *priv = hw->priv;
7248
7249 IWL_DEBUG_MAC80211("enter\n");
7250
7251 mutex_lock(&priv->mutex);
6ef89d0a
MA		 7252
7253 iwl_scan_cancel_timeout(priv, 100);
7254 cancel_delayed_work(&priv->post_associate);
7255 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7256 iwl_commit_rxon(priv);
7257
b481de9c
ZY		 7258 if (priv->interface_id == conf->if_id) {
7259 priv->interface_id = 0;
7260 memset(priv->bssid, 0, ETH_ALEN);
7261 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7262 priv->essid_len = 0;
7263 }
7264 mutex_unlock(&priv->mutex);
7265
7266 IWL_DEBUG_MAC80211("leave\n");
7267
7268}
7269
7270#define IWL_DELAY_NEXT_SCAN (HZ*2)
7271static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
7272{
7273 int rc = 0;
7274 unsigned long flags;
7275 struct iwl_priv *priv = hw->priv;
7276
7277 IWL_DEBUG_MAC80211("enter\n");
7278
15e869d8 7279 mutex_lock(&priv->mutex);
b481de9c
ZY		 7280 spin_lock_irqsave(&priv->lock, flags);
7281
7282 if (!iwl_is_ready_rf(priv)) {
7283 rc = -EIO;
7284 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
7285 goto out_unlock;
7286 }
7287
7288 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
7289 rc = -EIO;
7290 IWL_ERROR("ERROR: APs don't scan\n");
7291 goto out_unlock;
7292 }
7293
7294 /* if we just finished scan ask for delay */
7295 if (priv->last_scan_jiffies &&
7296 time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN,
7297 jiffies)) {
7298 rc = -EAGAIN;
7299 goto out_unlock;
7300 }
7301 if (len) {
7302 IWL_DEBUG_SCAN("direct scan for "
7303 "%s [%d]\n ",
7304 iwl_escape_essid(ssid, len), (int)len);
7305
7306 priv->one_direct_scan = 1;
7307 priv->direct_ssid_len = (u8)
7308 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
7309 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
6ef89d0a
MA		 7310 } else
7311 priv->one_direct_scan = 0;
b481de9c
ZY		 7312
7313 rc = iwl_scan_initiate(priv);
7314
7315 IWL_DEBUG_MAC80211("leave\n");
7316
7317out_unlock:
7318 spin_unlock_irqrestore(&priv->lock, flags);
15e869d8 7319 mutex_unlock(&priv->mutex);
b481de9c
ZY		 7320
7321 return rc;
7322}
7323
ea49c359 7324static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
b481de9c
ZY		 7325 const u8 *local_addr, const u8 *addr,
7326 struct ieee80211_key_conf *key)
7327{
7328 struct iwl_priv *priv = hw->priv;
7329 int rc = 0;
7330 u8 sta_id;
7331
7332 IWL_DEBUG_MAC80211("enter\n");
7333
7334 if (!iwl_param_hwcrypto) {
7335 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7336 return -EOPNOTSUPP;
7337 }
7338
7339 if (is_zero_ether_addr(addr))
7340 /* only support pairwise keys */
7341 return -EOPNOTSUPP;
7342
7343 sta_id = iwl_hw_find_station(priv, addr);
7344 if (sta_id == IWL_INVALID_STATION) {
0795af57
JP		 7345 DECLARE_MAC_BUF(mac);
7346
7347 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7348 print_mac(mac, addr));
b481de9c
ZY		 7349 return -EINVAL;
7350 }
7351
7352 mutex_lock(&priv->mutex);
7353
15e869d8
MA		 7354 iwl_scan_cancel_timeout(priv, 100);
7355
b481de9c
ZY		 7356 switch (cmd) {
7357 case SET_KEY:
7358 rc = iwl_update_sta_key_info(priv, key, sta_id);
7359 if (!rc) {
7360 iwl_set_rxon_hwcrypto(priv, 1);
7361 iwl_commit_rxon(priv);
7362 key->hw_key_idx = sta_id;
7363 IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7364 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
7365 }
7366 break;
7367 case DISABLE_KEY:
7368 rc = iwl_clear_sta_key_info(priv, sta_id);
7369 if (!rc) {
7370 iwl_set_rxon_hwcrypto(priv, 0);
7371 iwl_commit_rxon(priv);
7372 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7373 }
7374 break;
7375 default:
7376 rc = -EINVAL;
7377 }
7378
7379 IWL_DEBUG_MAC80211("leave\n");
7380 mutex_unlock(&priv->mutex);
7381
7382 return rc;
7383}
7384
7385static int iwl_mac_conf_tx(struct ieee80211_hw *hw, int queue,
7386 const struct ieee80211_tx_queue_params *params)
7387{
7388 struct iwl_priv *priv = hw->priv;
7389#ifdef CONFIG_IWLWIFI_QOS
7390 unsigned long flags;
7391 int q;
7392#endif /* CONFIG_IWL_QOS */
7393
7394 IWL_DEBUG_MAC80211("enter\n");
7395
7396 if (!iwl_is_ready_rf(priv)) {
7397 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7398 return -EIO;
7399 }
7400
7401 if (queue >= AC_NUM) {
7402 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7403 return 0;
7404 }
7405
7406#ifdef CONFIG_IWLWIFI_QOS
7407 if (!priv->qos_data.qos_enable) {
7408 priv->qos_data.qos_active = 0;
7409 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7410 return 0;
7411 }
7412 q = AC_NUM - 1 - queue;
7413
7414 spin_lock_irqsave(&priv->lock, flags);
7415
7416 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
7417 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
7418 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
7419 priv->qos_data.def_qos_parm.ac[q].edca_txop =
7420 cpu_to_le16((params->burst_time * 100));
7421
7422 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
7423 priv->qos_data.qos_active = 1;
7424
7425 spin_unlock_irqrestore(&priv->lock, flags);
7426
7427 mutex_lock(&priv->mutex);
7428 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7429 iwl_activate_qos(priv, 1);
7430 else if (priv->assoc_id && iwl_is_associated(priv))
7431 iwl_activate_qos(priv, 0);
7432
7433 mutex_unlock(&priv->mutex);
7434
7435#endif /*CONFIG_IWLWIFI_QOS */
7436
7437 IWL_DEBUG_MAC80211("leave\n");
7438 return 0;
7439}
7440
7441static int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
7442 struct ieee80211_tx_queue_stats *stats)
7443{
7444 struct iwl_priv *priv = hw->priv;
7445 int i, avail;
7446 struct iwl_tx_queue *txq;
7447 struct iwl_queue *q;
7448 unsigned long flags;
7449
7450 IWL_DEBUG_MAC80211("enter\n");
7451
7452 if (!iwl_is_ready_rf(priv)) {
7453 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7454 return -EIO;
7455 }
7456
7457 spin_lock_irqsave(&priv->lock, flags);
7458
7459 for (i = 0; i < AC_NUM; i++) {
7460 txq = &priv->txq[i];
7461 q = &txq->q;
7462 avail = iwl_queue_space(q);
7463
7464 stats->data[i].len = q->n_window - avail;
7465 stats->data[i].limit = q->n_window - q->high_mark;
7466 stats->data[i].count = q->n_window;
7467
7468 }
7469 spin_unlock_irqrestore(&priv->lock, flags);
7470
7471 IWL_DEBUG_MAC80211("leave\n");
7472
7473 return 0;
7474}
7475
7476static int iwl_mac_get_stats(struct ieee80211_hw *hw,
7477 struct ieee80211_low_level_stats *stats)
7478{
7479 IWL_DEBUG_MAC80211("enter\n");
7480 IWL_DEBUG_MAC80211("leave\n");
7481
7482 return 0;
7483}
7484
7485static u64 iwl_mac_get_tsf(struct ieee80211_hw *hw)
7486{
7487 IWL_DEBUG_MAC80211("enter\n");
7488 IWL_DEBUG_MAC80211("leave\n");
7489
7490 return 0;
7491}
7492
7493static void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
7494{
7495 struct iwl_priv *priv = hw->priv;
7496 unsigned long flags;
7497
7498 mutex_lock(&priv->mutex);
7499 IWL_DEBUG_MAC80211("enter\n");
7500
7501#ifdef CONFIG_IWLWIFI_QOS
7502 iwl_reset_qos(priv);
7503#endif
7504 cancel_delayed_work(&priv->post_associate);
7505
7506 spin_lock_irqsave(&priv->lock, flags);
7507 priv->assoc_id = 0;
7508 priv->assoc_capability = 0;
7509 priv->call_post_assoc_from_beacon = 0;
7510
7511 /* new association get rid of ibss beacon skb */
7512 if (priv->ibss_beacon)
7513 dev_kfree_skb(priv->ibss_beacon);
7514
7515 priv->ibss_beacon = NULL;
7516
7517 priv->beacon_int = priv->hw->conf.beacon_int;
7518 priv->timestamp1 = 0;
7519 priv->timestamp0 = 0;
7520 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
7521 priv->beacon_int = 0;
7522
7523 spin_unlock_irqrestore(&priv->lock, flags);
7524
15e869d8
MA		 7525 /* we are restarting association process
7526 * clear RXON_FILTER_ASSOC_MSK bit
7527 */
7528 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
7529 iwl_scan_cancel_timeout(priv, 100);
7530 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7531 iwl_commit_rxon(priv);
7532 }
7533
b481de9c
ZY		 7534 /* Per mac80211.h: This is only used in IBSS mode... */
7535 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
15e869d8 7536
b481de9c
ZY		 7537 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7538 mutex_unlock(&priv->mutex);
7539 return;
7540 }
7541
7542 if (!iwl_is_ready_rf(priv)) {
7543 IWL_DEBUG_MAC80211("leave - not ready\n");
7544 mutex_unlock(&priv->mutex);
7545 return;
7546 }
7547
7548 priv->only_active_channel = 0;
7549
7550 iwl_set_rate(priv);
7551
7552 mutex_unlock(&priv->mutex);
7553
7554 IWL_DEBUG_MAC80211("leave\n");
7555
7556}
7557
7558static int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
7559 struct ieee80211_tx_control *control)
7560{
7561 struct iwl_priv *priv = hw->priv;
7562 unsigned long flags;
7563
7564 mutex_lock(&priv->mutex);
7565 IWL_DEBUG_MAC80211("enter\n");
7566
7567 if (!iwl_is_ready_rf(priv)) {
7568 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7569 mutex_unlock(&priv->mutex);
7570 return -EIO;
7571 }
7572
7573 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7574 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7575 mutex_unlock(&priv->mutex);
7576 return -EIO;
7577 }
7578
7579 spin_lock_irqsave(&priv->lock, flags);
7580
7581 if (priv->ibss_beacon)
7582 dev_kfree_skb(priv->ibss_beacon);
7583
7584 priv->ibss_beacon = skb;
7585
7586 priv->assoc_id = 0;
7587
7588 IWL_DEBUG_MAC80211("leave\n");
7589 spin_unlock_irqrestore(&priv->lock, flags);
7590
7591#ifdef CONFIG_IWLWIFI_QOS
7592 iwl_reset_qos(priv);
7593#endif
7594
7595 queue_work(priv->workqueue, &priv->post_associate.work);
7596
7597 mutex_unlock(&priv->mutex);
7598
7599 return 0;
7600}
7601
7602/*****************************************************************************
7603 *
7604 * sysfs attributes
7605 *
7606 *****************************************************************************/
7607
7608#ifdef CONFIG_IWLWIFI_DEBUG
7609
7610/*
7611 * The following adds a new attribute to the sysfs representation
7612 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
7613 * used for controlling the debug level.
7614 *
7615 * See the level definitions in iwl for details.
7616 */
7617
7618static ssize_t show_debug_level(struct device_driver *d, char *buf)
7619{
7620 return sprintf(buf, "0x%08X\n", iwl_debug_level);
7621}
7622static ssize_t store_debug_level(struct device_driver *d,
7623 const char *buf, size_t count)
7624{
7625 char *p = (char *)buf;
7626 u32 val;
7627
7628 val = simple_strtoul(p, &p, 0);
7629 if (p == buf)
7630 printk(KERN_INFO DRV_NAME
7631 ": %s is not in hex or decimal form.\n", buf);
7632 else
7633 iwl_debug_level = val;
7634
7635 return strnlen(buf, count);
7636}
7637
7638static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
7639 show_debug_level, store_debug_level);
7640
7641#endif /* CONFIG_IWLWIFI_DEBUG */
7642
7643static ssize_t show_rf_kill(struct device *d,
7644 struct device_attribute *attr, char *buf)
7645{
7646 /*
7647 * 0 - RF kill not enabled
7648 * 1 - SW based RF kill active (sysfs)
7649 * 2 - HW based RF kill active
7650 * 3 - Both HW and SW based RF kill active
7651 */
7652 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7653 int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) |
7654 (test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0);
7655
7656 return sprintf(buf, "%i\n", val);
7657}
7658
7659static ssize_t store_rf_kill(struct device *d,
7660 struct device_attribute *attr,
7661 const char *buf, size_t count)
7662{
7663 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7664
7665 mutex_lock(&priv->mutex);
7666 iwl_radio_kill_sw(priv, buf[0] == '1');
7667 mutex_unlock(&priv->mutex);
7668
7669 return count;
7670}
7671
7672static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);
7673
7674static ssize_t show_temperature(struct device *d,
7675 struct device_attribute *attr, char *buf)
7676{
7677 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7678
7679 if (!iwl_is_alive(priv))
7680 return -EAGAIN;
7681
7682 return sprintf(buf, "%d\n", iwl_hw_get_temperature(priv));
7683}
7684
7685static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
7686
7687static ssize_t show_rs_window(struct device *d,
7688 struct device_attribute *attr,
7689 char *buf)
7690{
7691 struct iwl_priv *priv = d->driver_data;
7692 return iwl_fill_rs_info(priv->hw, buf, IWL_AP_ID);
7693}
7694static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
7695
7696static ssize_t show_tx_power(struct device *d,
7697 struct device_attribute *attr, char *buf)
7698{
7699 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7700 return sprintf(buf, "%d\n", priv->user_txpower_limit);
7701}
7702
7703static ssize_t store_tx_power(struct device *d,
7704 struct device_attribute *attr,
7705 const char *buf, size_t count)
7706{
7707 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7708 char *p = (char *)buf;
7709 u32 val;
7710
7711 val = simple_strtoul(p, &p, 10);
7712 if (p == buf)
7713 printk(KERN_INFO DRV_NAME
7714 ": %s is not in decimal form.\n", buf);
7715 else
7716 iwl_hw_reg_set_txpower(priv, val);
7717
7718 return count;
7719}
7720
7721static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
7722
7723static ssize_t show_flags(struct device *d,
7724 struct device_attribute *attr, char *buf)
7725{
7726 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7727
7728 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
7729}
7730
7731static ssize_t store_flags(struct device *d,
7732 struct device_attribute *attr,
7733 const char *buf, size_t count)
7734{
7735 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7736 u32 flags = simple_strtoul(buf, NULL, 0);
7737
7738 mutex_lock(&priv->mutex);
7739 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
7740 /* Cancel any currently running scans... */
7741 if (iwl_scan_cancel_timeout(priv, 100))
7742 IWL_WARNING("Could not cancel scan.\n");
7743 else {
7744 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
7745 flags);
7746 priv->staging_rxon.flags = cpu_to_le32(flags);
7747 iwl_commit_rxon(priv);
7748 }
7749 }
7750 mutex_unlock(&priv->mutex);
7751
7752 return count;
7753}
7754
7755static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
7756
7757static ssize_t show_filter_flags(struct device *d,
7758 struct device_attribute *attr, char *buf)
7759{
7760 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7761
7762 return sprintf(buf, "0x%04X\n",
7763 le32_to_cpu(priv->active_rxon.filter_flags));
7764}
7765
7766static ssize_t store_filter_flags(struct device *d,
7767 struct device_attribute *attr,
7768 const char *buf, size_t count)
7769{
7770 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7771 u32 filter_flags = simple_strtoul(buf, NULL, 0);
7772
7773 mutex_lock(&priv->mutex);
7774 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
7775 /* Cancel any currently running scans... */
7776 if (iwl_scan_cancel_timeout(priv, 100))
7777 IWL_WARNING("Could not cancel scan.\n");
7778 else {
7779 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
7780 "0x%04X\n", filter_flags);
7781 priv->staging_rxon.filter_flags =
7782 cpu_to_le32(filter_flags);
7783 iwl_commit_rxon(priv);
7784 }
7785 }
7786 mutex_unlock(&priv->mutex);
7787
7788 return count;
7789}
7790
7791static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
7792 store_filter_flags);
7793
7794static ssize_t show_tune(struct device *d,
7795 struct device_attribute *attr, char *buf)
7796{
7797 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7798
7799 return sprintf(buf, "0x%04X\n",
7800 (priv->phymode << 8) |
7801 le16_to_cpu(priv->active_rxon.channel));
7802}
7803
7804static void iwl_set_flags_for_phymode(struct iwl_priv *priv, u8 phymode);
7805
7806static ssize_t store_tune(struct device *d,
7807 struct device_attribute *attr,
7808 const char *buf, size_t count)
7809{
7810 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7811 char *p = (char *)buf;
7812 u16 tune = simple_strtoul(p, &p, 0);
7813 u8 phymode = (tune >> 8) & 0xff;
7814 u16 channel = tune & 0xff;
7815
7816 IWL_DEBUG_INFO("Tune request to:%d channel:%d\n", phymode, channel);
7817
7818 mutex_lock(&priv->mutex);
7819 if ((le16_to_cpu(priv->staging_rxon.channel) != channel) ||
7820 (priv->phymode != phymode)) {
7821 const struct iwl_channel_info *ch_info;
7822
7823 ch_info = iwl_get_channel_info(priv, phymode, channel);
7824 if (!ch_info) {
7825 IWL_WARNING("Requested invalid phymode/channel "
7826 "combination: %d %d\n", phymode, channel);
7827 mutex_unlock(&priv->mutex);
7828 return -EINVAL;
7829 }
7830
7831 /* Cancel any currently running scans... */
7832 if (iwl_scan_cancel_timeout(priv, 100))
7833 IWL_WARNING("Could not cancel scan.\n");
7834 else {
7835 IWL_DEBUG_INFO("Committing phymode and "
7836 "rxon.channel = %d %d\n",
7837 phymode, channel);
7838
7839 iwl_set_rxon_channel(priv, phymode, channel);
7840 iwl_set_flags_for_phymode(priv, phymode);
7841
7842 iwl_set_rate(priv);
7843 iwl_commit_rxon(priv);
7844 }
7845 }
7846 mutex_unlock(&priv->mutex);
7847
7848 return count;
7849}
7850
7851static DEVICE_ATTR(tune, S_IWUSR | S_IRUGO, show_tune, store_tune);
7852
7853#ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
7854
7855static ssize_t show_measurement(struct device *d,
7856 struct device_attribute *attr, char *buf)
7857{
7858 struct iwl_priv *priv = dev_get_drvdata(d);
7859 struct iwl_spectrum_notification measure_report;
7860 u32 size = sizeof(measure_report), len = 0, ofs = 0;
7861 u8 *data = (u8 *) & measure_report;
7862 unsigned long flags;
7863
7864 spin_lock_irqsave(&priv->lock, flags);
7865 if (!(priv->measurement_status & MEASUREMENT_READY)) {
7866 spin_unlock_irqrestore(&priv->lock, flags);
7867 return 0;
7868 }
7869 memcpy(&measure_report, &priv->measure_report, size);
7870 priv->measurement_status = 0;
7871 spin_unlock_irqrestore(&priv->lock, flags);
7872
7873 while (size && (PAGE_SIZE - len)) {
7874 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7875 PAGE_SIZE - len, 1);
7876 len = strlen(buf);
7877 if (PAGE_SIZE - len)
7878 buf[len++] = '\n';
7879
7880 ofs += 16;
7881 size -= min(size, 16U);
7882 }
7883
7884 return len;
7885}
7886
7887static ssize_t store_measurement(struct device *d,
7888 struct device_attribute *attr,
7889 const char *buf, size_t count)
7890{
7891 struct iwl_priv *priv = dev_get_drvdata(d);
7892 struct ieee80211_measurement_params params = {
7893 .channel = le16_to_cpu(priv->active_rxon.channel),
7894 .start_time = cpu_to_le64(priv->last_tsf),
7895 .duration = cpu_to_le16(1),
7896 };
7897 u8 type = IWL_MEASURE_BASIC;
7898 u8 buffer[32];
7899 u8 channel;
7900
7901 if (count) {
7902 char *p = buffer;
7903 strncpy(buffer, buf, min(sizeof(buffer), count));
7904 channel = simple_strtoul(p, NULL, 0);
7905 if (channel)
7906 params.channel = channel;
7907
7908 p = buffer;
7909 while (*p && *p != ' ')
7910 p++;
7911 if (*p)
7912 type = simple_strtoul(p + 1, NULL, 0);
7913 }
7914
7915 IWL_DEBUG_INFO("Invoking measurement of type %d on "
7916 "channel %d (for '%s')\n", type, params.channel, buf);
7917 iwl_get_measurement(priv, &params, type);
7918
7919 return count;
7920}
7921
7922static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
7923 show_measurement, store_measurement);
7924#endif /* CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT */
7925
7926static ssize_t show_rate(struct device *d,
7927 struct device_attribute *attr, char *buf)
7928{
7929 struct iwl_priv *priv = dev_get_drvdata(d);
7930 unsigned long flags;
7931 int i;
7932
7933 spin_lock_irqsave(&priv->sta_lock, flags);
7934 if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
7935 i = priv->stations[IWL_AP_ID].current_rate.s.rate;
7936 else
7937 i = priv->stations[IWL_STA_ID].current_rate.s.rate;
7938 spin_unlock_irqrestore(&priv->sta_lock, flags);
7939
7940 i = iwl_rate_index_from_plcp(i);
7941 if (i == -1)
7942 return sprintf(buf, "0\n");
7943
7944 return sprintf(buf, "%d%s\n",
7945 (iwl_rates[i].ieee >> 1),
7946 (iwl_rates[i].ieee & 0x1) ? ".5" : "");
7947}
7948
7949static DEVICE_ATTR(rate, S_IRUSR, show_rate, NULL);
7950
7951static ssize_t store_retry_rate(struct device *d,
7952 struct device_attribute *attr,
7953 const char *buf, size_t count)
7954{
7955 struct iwl_priv *priv = dev_get_drvdata(d);
7956
7957 priv->retry_rate = simple_strtoul(buf, NULL, 0);
7958 if (priv->retry_rate <= 0)
7959 priv->retry_rate = 1;
7960
7961 return count;
7962}
7963
7964static ssize_t show_retry_rate(struct device *d,
7965 struct device_attribute *attr, char *buf)
7966{
7967 struct iwl_priv *priv = dev_get_drvdata(d);
7968 return sprintf(buf, "%d", priv->retry_rate);
7969}
7970
7971static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
7972 store_retry_rate);
7973
7974static ssize_t store_power_level(struct device *d,
7975 struct device_attribute *attr,
7976 const char *buf, size_t count)
7977{
7978 struct iwl_priv *priv = dev_get_drvdata(d);
7979 int rc;
7980 int mode;
7981
7982 mode = simple_strtoul(buf, NULL, 0);
7983 mutex_lock(&priv->mutex);
7984
7985 if (!iwl_is_ready(priv)) {
7986 rc = -EAGAIN;
7987 goto out;
7988 }
7989
7990 if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
7991 mode = IWL_POWER_AC;
7992 else
7993 mode |= IWL_POWER_ENABLED;
7994
7995 if (mode != priv->power_mode) {
7996 rc = iwl_send_power_mode(priv, IWL_POWER_LEVEL(mode));
7997 if (rc) {
7998 IWL_DEBUG_MAC80211("failed setting power mode.\n");
7999 goto out;
8000 }
8001 priv->power_mode = mode;
8002 }
8003
8004 rc = count;
8005
8006 out:
8007 mutex_unlock(&priv->mutex);
8008 return rc;
8009}
8010
8011#define MAX_WX_STRING 80
8012
8013/* Values are in microsecond */
8014static const s32 timeout_duration[] = {
8015 350000,
8016 250000,
8017 75000,
8018 37000,
8019 25000,
8020};
8021static const s32 period_duration[] = {
8022 400000,
8023 700000,
8024 1000000,
8025 1000000,
8026 1000000
8027};
8028
8029static ssize_t show_power_level(struct device *d,
8030 struct device_attribute *attr, char *buf)
8031{
8032 struct iwl_priv *priv = dev_get_drvdata(d);
8033 int level = IWL_POWER_LEVEL(priv->power_mode);
8034 char *p = buf;
8035
8036 p += sprintf(p, "%d ", level);
8037 switch (level) {
8038 case IWL_POWER_MODE_CAM:
8039 case IWL_POWER_AC:
8040 p += sprintf(p, "(AC)");
8041 break;
8042 case IWL_POWER_BATTERY:
8043 p += sprintf(p, "(BATTERY)");
8044 break;
8045 default:
8046 p += sprintf(p,
8047 "(Timeout %dms, Period %dms)",
8048 timeout_duration[level - 1] / 1000,
8049 period_duration[level - 1] / 1000);
8050 }
8051
8052 if (!(priv->power_mode & IWL_POWER_ENABLED))
8053 p += sprintf(p, " OFF\n");
8054 else
8055 p += sprintf(p, " \n");
8056
8057 return (p - buf + 1);
8058
8059}
8060
8061static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
8062 store_power_level);
8063
8064static ssize_t show_channels(struct device *d,
8065 struct device_attribute *attr, char *buf)
8066{
8067 struct iwl_priv *priv = dev_get_drvdata(d);
8068 int len = 0, i;
8069 struct ieee80211_channel *channels = NULL;
8070 const struct ieee80211_hw_mode *hw_mode = NULL;
8071 int count = 0;
8072
8073 if (!iwl_is_ready(priv))
8074 return -EAGAIN;
8075
8076 hw_mode = iwl_get_hw_mode(priv, MODE_IEEE80211G);
8077 if (!hw_mode)
8078 hw_mode = iwl_get_hw_mode(priv, MODE_IEEE80211B);
8079 if (hw_mode) {
8080 channels = hw_mode->channels;
8081 count = hw_mode->num_channels;
8082 }
8083
8084 len +=
8085 sprintf(&buf[len],
8086 "Displaying %d channels in 2.4GHz band "
8087 "(802.11bg):\n", count);
8088
8089 for (i = 0; i < count; i++)
8090 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8091 channels[i].chan,
8092 channels[i].power_level,
8093 channels[i].
8094 flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8095 " (IEEE 802.11h required)" : "",
8096 (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8097 || (channels[i].
8098 flag &
8099 IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8100 ", IBSS",
8101 channels[i].
8102 flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8103 "active/passive" : "passive only");
8104
8105 hw_mode = iwl_get_hw_mode(priv, MODE_IEEE80211A);
8106 if (hw_mode) {
8107 channels = hw_mode->channels;
8108 count = hw_mode->num_channels;
8109 } else {
8110 channels = NULL;
8111 count = 0;
8112 }
8113
8114 len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
8115 "(802.11a):\n", count);
8116
8117 for (i = 0; i < count; i++)
8118 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8119 channels[i].chan,
8120 channels[i].power_level,
8121 channels[i].
8122 flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8123 " (IEEE 802.11h required)" : "",
8124 (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8125 || (channels[i].
8126 flag &
8127 IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8128 ", IBSS",
8129 channels[i].
8130 flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8131 "active/passive" : "passive only");
8132
8133 return len;
8134}
8135
8136static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
8137
8138static ssize_t show_statistics(struct device *d,
8139 struct device_attribute *attr, char *buf)
8140{
8141 struct iwl_priv *priv = dev_get_drvdata(d);
8142 u32 size = sizeof(struct iwl_notif_statistics);
8143 u32 len = 0, ofs = 0;
8144 u8 *data = (u8 *) & priv->statistics;
8145 int rc = 0;
8146
8147 if (!iwl_is_alive(priv))
8148 return -EAGAIN;
8149
8150 mutex_lock(&priv->mutex);
8151 rc = iwl_send_statistics_request(priv);
8152 mutex_unlock(&priv->mutex);
8153
8154 if (rc) {
8155 len = sprintf(buf,
8156 "Error sending statistics request: 0x%08X\n", rc);
8157 return len;
8158 }
8159
8160 while (size && (PAGE_SIZE - len)) {
8161 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8162 PAGE_SIZE - len, 1);
8163 len = strlen(buf);
8164 if (PAGE_SIZE - len)
8165 buf[len++] = '\n';
8166
8167 ofs += 16;
8168 size -= min(size, 16U);
8169 }
8170
8171 return len;
8172}
8173
8174static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
8175
8176static ssize_t show_antenna(struct device *d,
8177 struct device_attribute *attr, char *buf)
8178{
8179 struct iwl_priv *priv = dev_get_drvdata(d);
8180
8181 if (!iwl_is_alive(priv))
8182 return -EAGAIN;
8183
8184 return sprintf(buf, "%d\n", priv->antenna);
8185}
8186
8187static ssize_t store_antenna(struct device *d,
8188 struct device_attribute *attr,
8189 const char *buf, size_t count)
8190{
8191 int ant;
8192 struct iwl_priv *priv = dev_get_drvdata(d);
8193
8194 if (count == 0)
8195 return 0;
8196
8197 if (sscanf(buf, "%1i", &ant) != 1) {
8198 IWL_DEBUG_INFO("not in hex or decimal form.\n");
8199 return count;
8200 }
8201
8202 if ((ant >= 0) && (ant <= 2)) {
8203 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
8204 priv->antenna = (enum iwl_antenna)ant;
8205 } else
8206 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
8207
8208
8209 return count;
8210}
8211
8212static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
8213
8214static ssize_t show_status(struct device *d,
8215 struct device_attribute *attr, char *buf)
8216{
8217 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8218 if (!iwl_is_alive(priv))
8219 return -EAGAIN;
8220 return sprintf(buf, "0x%08x\n", (int)priv->status);
8221}
8222
8223static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
8224
8225static ssize_t dump_error_log(struct device *d,
8226 struct device_attribute *attr,
8227 const char *buf, size_t count)
8228{
8229 char *p = (char *)buf;
8230
8231 if (p[0] == '1')
8232 iwl_dump_nic_error_log((struct iwl_priv *)d->driver_data);
8233
8234 return strnlen(buf, count);
8235}
8236
8237static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
8238
8239static ssize_t dump_event_log(struct device *d,
8240 struct device_attribute *attr,
8241 const char *buf, size_t count)
8242{
8243 char *p = (char *)buf;
8244
8245 if (p[0] == '1')
8246 iwl_dump_nic_event_log((struct iwl_priv *)d->driver_data);
8247
8248 return strnlen(buf, count);
8249}
8250
8251static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
8252
8253/*****************************************************************************
8254 *
8255 * driver setup and teardown
8256 *
8257 *****************************************************************************/
8258
8259static void iwl_setup_deferred_work(struct iwl_priv *priv)
8260{
8261 priv->workqueue = create_workqueue(DRV_NAME);
8262
8263 init_waitqueue_head(&priv->wait_command_queue);
8264
8265 INIT_WORK(&priv->up, iwl_bg_up);
8266 INIT_WORK(&priv->restart, iwl_bg_restart);
8267 INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
8268 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
8269 INIT_WORK(&priv->request_scan, iwl_bg_request_scan);
8270 INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
8271 INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
8272 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
8273 INIT_DELAYED_WORK(&priv->post_associate, iwl_bg_post_associate);
8274 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
8275 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
8276 INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
8277
8278 iwl_hw_setup_deferred_work(priv);
8279
8280 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
8281 iwl_irq_tasklet, (unsigned long)priv);
8282}
8283
8284static void iwl_cancel_deferred_work(struct iwl_priv *priv)
8285{
8286 iwl_hw_cancel_deferred_work(priv);
8287
e47eb6ad 8288 cancel_delayed_work_sync(&priv->init_alive_start);
b481de9c
ZY		 8289 cancel_delayed_work(&priv->scan_check);
8290 cancel_delayed_work(&priv->alive_start);
8291 cancel_delayed_work(&priv->post_associate);
8292 cancel_work_sync(&priv->beacon_update);
8293}
8294
8295static struct attribute *iwl_sysfs_entries[] = {
8296 &dev_attr_antenna.attr,
8297 &dev_attr_channels.attr,
8298 &dev_attr_dump_errors.attr,
8299 &dev_attr_dump_events.attr,
8300 &dev_attr_flags.attr,
8301 &dev_attr_filter_flags.attr,
8302#ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
8303 &dev_attr_measurement.attr,
8304#endif
8305 &dev_attr_power_level.attr,
8306 &dev_attr_rate.attr,
8307 &dev_attr_retry_rate.attr,
8308 &dev_attr_rf_kill.attr,
8309 &dev_attr_rs_window.attr,
8310 &dev_attr_statistics.attr,
8311 &dev_attr_status.attr,
8312 &dev_attr_temperature.attr,
8313 &dev_attr_tune.attr,
8314 &dev_attr_tx_power.attr,
8315
8316 NULL
8317};
8318
8319static struct attribute_group iwl_attribute_group = {
8320 .name = NULL, /* put in device directory */
8321 .attrs = iwl_sysfs_entries,
8322};
8323
8324static struct ieee80211_ops iwl_hw_ops = {
8325 .tx = iwl_mac_tx,
4150c572 8326 .start = iwl_mac_start,
b481de9c
ZY		 8327 .stop = iwl_mac_stop,
8328 .add_interface = iwl_mac_add_interface,
8329 .remove_interface = iwl_mac_remove_interface,
8330 .config = iwl_mac_config,
8331 .config_interface = iwl_mac_config_interface,
4150c572 8332 .configure_filter = iwl_configure_filter,
b481de9c
ZY		 8333 .set_key = iwl_mac_set_key,
8334 .get_stats = iwl_mac_get_stats,
8335 .get_tx_stats = iwl_mac_get_tx_stats,
8336 .conf_tx = iwl_mac_conf_tx,
8337 .get_tsf = iwl_mac_get_tsf,
8338 .reset_tsf = iwl_mac_reset_tsf,
8339 .beacon_update = iwl_mac_beacon_update,
8340 .hw_scan = iwl_mac_hw_scan
8341};
8342
8343static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
8344{
8345 int err = 0;
8346 u32 pci_id;
8347 struct iwl_priv *priv;
8348 struct ieee80211_hw *hw;
8349 int i;
8350
8351 if (iwl_param_disable_hw_scan) {
8352 IWL_DEBUG_INFO("Disabling hw_scan\n");
8353 iwl_hw_ops.hw_scan = NULL;
8354 }
8355
8356 if ((iwl_param_queues_num > IWL_MAX_NUM_QUEUES) ||
8357 (iwl_param_queues_num < IWL_MIN_NUM_QUEUES)) {
8358 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
8359 IWL_MIN_NUM_QUEUES, IWL_MAX_NUM_QUEUES);
8360 err = -EINVAL;
8361 goto out;
8362 }
8363
8364 /* mac80211 allocates memory for this device instance, including
8365 * space for this driver's private structure */
8366 hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwl_hw_ops);
8367 if (hw == NULL) {
8368 IWL_ERROR("Can not allocate network device\n");
8369 err = -ENOMEM;
8370 goto out;
8371 }
8372 SET_IEEE80211_DEV(hw, &pdev->dev);
8373
f51359a8
JB		 8374 hw->rate_control_algorithm = "iwl-3945-rs";
8375
b481de9c
ZY		 8376 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
8377 priv = hw->priv;
8378 priv->hw = hw;
8379
8380 priv->pci_dev = pdev;
8381 priv->antenna = (enum iwl_antenna)iwl_param_antenna;
8382#ifdef CONFIG_IWLWIFI_DEBUG
8383 iwl_debug_level = iwl_param_debug;
8384 atomic_set(&priv->restrict_refcnt, 0);
8385#endif
8386 priv->retry_rate = 1;
8387
8388 priv->ibss_beacon = NULL;
8389
8390 /* Tell mac80211 and its clients (e.g. Wireless Extensions)
8391 * the range of signal quality values that we'll provide.
8392 * Negative values for level/noise indicate that we'll provide dBm.
8393 * For WE, at least, non-0 values here *enable* display of values
8394 * in app (iwconfig). */
8395 hw->max_rssi = -20; /* signal level, negative indicates dBm */
8396 hw->max_noise = -20; /* noise level, negative indicates dBm */
8397 hw->max_signal = 100; /* link quality indication (%) */
8398
8399 /* Tell mac80211 our Tx characteristics */
8400 hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE;
8401
8402 hw->queues = 4;
8403
8404 spin_lock_init(&priv->lock);
8405 spin_lock_init(&priv->power_data.lock);
8406 spin_lock_init(&priv->sta_lock);
8407 spin_lock_init(&priv->hcmd_lock);
8408
8409 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++)
8410 INIT_LIST_HEAD(&priv->ibss_mac_hash[i]);
8411
8412 INIT_LIST_HEAD(&priv->free_frames);
8413
8414 mutex_init(&priv->mutex);
8415 if (pci_enable_device(pdev)) {
8416 err = -ENODEV;
8417 goto out_ieee80211_free_hw;
8418 }
8419
8420 pci_set_master(pdev);
8421
8422 iwl_clear_stations_table(priv);
8423
8424 priv->data_retry_limit = -1;
8425 priv->ieee_channels = NULL;
8426 priv->ieee_rates = NULL;
8427 priv->phymode = -1;
8428
8429 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
8430 if (!err)
8431 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
8432 if (err) {
8433 printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n");
8434 goto out_pci_disable_device;
8435 }
8436
8437 pci_set_drvdata(pdev, priv);
8438 err = pci_request_regions(pdev, DRV_NAME);
8439 if (err)
8440 goto out_pci_disable_device;
8441 /* We disable the RETRY_TIMEOUT register (0x41) to keep
8442 * PCI Tx retries from interfering with C3 CPU state */
8443 pci_write_config_byte(pdev, 0x41, 0x00);
8444 priv->hw_base = pci_iomap(pdev, 0, 0);
8445 if (!priv->hw_base) {
8446 err = -ENODEV;
8447 goto out_pci_release_regions;
8448 }
8449
8450 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
8451 (unsigned long long) pci_resource_len(pdev, 0));
8452 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
8453
8454 /* Initialize module parameter values here */
8455
8456 if (iwl_param_disable) {
8457 set_bit(STATUS_RF_KILL_SW, &priv->status);
8458 IWL_DEBUG_INFO("Radio disabled.\n");
8459 }
8460
8461 priv->iw_mode = IEEE80211_IF_TYPE_STA;
8462
8463 pci_id =
8464 (priv->pci_dev->device << 16) | priv->pci_dev->subsystem_device;
8465
8466 switch (pci_id) {
8467 case 0x42221005: /* 0x4222 0x8086 0x1005 is BG SKU */
8468 case 0x42221034: /* 0x4222 0x8086 0x1034 is BG SKU */
8469 case 0x42271014: /* 0x4227 0x8086 0x1014 is BG SKU */
8470 case 0x42221044: /* 0x4222 0x8086 0x1044 is BG SKU */
8471 priv->is_abg = 0;
8472 break;
8473
8474 /*
8475 * Rest are assumed ABG SKU -- if this is not the
8476 * case then the card will get the wrong 'Detected'
8477 * line in the kernel log however the code that
8478 * initializes the GEO table will detect no A-band
8479 * channels and remove the is_abg mask.
8480 */
8481 default:
8482 priv->is_abg = 1;
8483 break;
8484 }
8485
8486 printk(KERN_INFO DRV_NAME
8487 ": Detected Intel PRO/Wireless 3945%sBG Network Connection\n",
8488 priv->is_abg ? "A" : "");
8489
8490 /* Device-specific setup */
8491 if (iwl_hw_set_hw_setting(priv)) {
8492 IWL_ERROR("failed to set hw settings\n");
8493 mutex_unlock(&priv->mutex);
8494 goto out_iounmap;
8495 }
8496
8497#ifdef CONFIG_IWLWIFI_QOS
8498 if (iwl_param_qos_enable)
8499 priv->qos_data.qos_enable = 1;
8500
8501 iwl_reset_qos(priv);
8502
8503 priv->qos_data.qos_active = 0;
8504 priv->qos_data.qos_cap.val = 0;
8505#endif /* CONFIG_IWLWIFI_QOS */
8506
8507 iwl_set_rxon_channel(priv, MODE_IEEE80211G, 6);
8508 iwl_setup_deferred_work(priv);
8509 iwl_setup_rx_handlers(priv);
8510
8511 priv->rates_mask = IWL_RATES_MASK;
8512 /* If power management is turned on, default to AC mode */
8513 priv->power_mode = IWL_POWER_AC;
8514 priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
8515
8516 pci_enable_msi(pdev);
8517
8518 err = request_irq(pdev->irq, iwl_isr, IRQF_SHARED, DRV_NAME, priv);
8519 if (err) {
8520 IWL_ERROR("Error allocating IRQ %d\n", pdev->irq);
8521 goto out_disable_msi;
8522 }
8523
8524 mutex_lock(&priv->mutex);
8525
8526 err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
8527 if (err) {
8528 IWL_ERROR("failed to create sysfs device attributes\n");
8529 mutex_unlock(&priv->mutex);
8530 goto out_release_irq;
8531 }
8532
8533 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
8534 * ucode filename and max sizes are card-specific. */
8535 err = iwl_read_ucode(priv);
8536 if (err) {
8537 IWL_ERROR("Could not read microcode: %d\n", err);
8538 mutex_unlock(&priv->mutex);
8539 goto out_pci_alloc;
8540 }
8541
8542 mutex_unlock(&priv->mutex);
8543
01ebd063 8544 IWL_DEBUG_INFO("Queueing UP work.\n");
b481de9c
ZY		 8545
8546 queue_work(priv->workqueue, &priv->up);
8547
8548 return 0;
8549
8550 out_pci_alloc:
8551 iwl_dealloc_ucode_pci(priv);
8552
8553 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
8554
8555 out_release_irq:
8556 free_irq(pdev->irq, priv);
8557
8558 out_disable_msi:
8559 pci_disable_msi(pdev);
8560 destroy_workqueue(priv->workqueue);
8561 priv->workqueue = NULL;
8562 iwl_unset_hw_setting(priv);
8563
8564 out_iounmap:
8565 pci_iounmap(pdev, priv->hw_base);
8566 out_pci_release_regions:
8567 pci_release_regions(pdev);
8568 out_pci_disable_device:
8569 pci_disable_device(pdev);
8570 pci_set_drvdata(pdev, NULL);
8571 out_ieee80211_free_hw:
8572 ieee80211_free_hw(priv->hw);
8573 out:
8574 return err;
8575}
8576
8577static void iwl_pci_remove(struct pci_dev *pdev)
8578{
8579 struct iwl_priv *priv = pci_get_drvdata(pdev);
8580 struct list_head *p, *q;
8581 int i;
8582
8583 if (!priv)
8584 return;
8585
8586 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
8587
b481de9c 8588 set_bit(STATUS_EXIT_PENDING, &priv->status);
b24d22b1
ZY		 8589
8590 iwl_down(priv);
b481de9c
ZY		 8591
8592 /* Free MAC hash list for ADHOC */
8593 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
8594 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
8595 list_del(p);
8596 kfree(list_entry(p, struct iwl_ibss_seq, list));
8597 }
8598 }
8599
8600 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
8601
8602 iwl_dealloc_ucode_pci(priv);
8603
8604 if (priv->rxq.bd)
8605 iwl_rx_queue_free(priv, &priv->rxq);
8606 iwl_hw_txq_ctx_free(priv);
8607
8608 iwl_unset_hw_setting(priv);
8609 iwl_clear_stations_table(priv);
8610
8611 if (priv->mac80211_registered) {
8612 ieee80211_unregister_hw(priv->hw);
8613 iwl_rate_control_unregister(priv->hw);
8614 }
8615
6ef89d0a
MA		 8616 /*netif_stop_queue(dev); */
8617 flush_workqueue(priv->workqueue);
8618
b481de9c
ZY		 8619 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
8620 * priv->workqueue... so we can't take down the workqueue
8621 * until now... */
8622 destroy_workqueue(priv->workqueue);
8623 priv->workqueue = NULL;
8624
8625 free_irq(pdev->irq, priv);
8626 pci_disable_msi(pdev);
8627 pci_iounmap(pdev, priv->hw_base);
8628 pci_release_regions(pdev);
8629 pci_disable_device(pdev);
8630 pci_set_drvdata(pdev, NULL);
8631
8632 kfree(priv->channel_info);
8633
8634 kfree(priv->ieee_channels);
8635 kfree(priv->ieee_rates);
8636
8637 if (priv->ibss_beacon)
8638 dev_kfree_skb(priv->ibss_beacon);
8639
8640 ieee80211_free_hw(priv->hw);
8641}
8642
8643#ifdef CONFIG_PM
8644
8645static int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
8646{
8647 struct iwl_priv *priv = pci_get_drvdata(pdev);
8648
b481de9c
ZY		 8649 set_bit(STATUS_IN_SUSPEND, &priv->status);
8650
8651 /* Take down the device; powers it off, etc. */
b24d22b1 8652 iwl_down(priv);
b481de9c
ZY		 8653
8654 if (priv->mac80211_registered)
8655 ieee80211_stop_queues(priv->hw);
8656
8657 pci_save_state(pdev);
8658 pci_disable_device(pdev);
8659 pci_set_power_state(pdev, PCI_D3hot);
8660
b481de9c
ZY		 8661 return 0;
8662}
8663
8664static void iwl_resume(struct iwl_priv *priv)
8665{
8666 unsigned long flags;
8667
8668 /* The following it a temporary work around due to the
8669 * suspend / resume not fully initializing the NIC correctly.
8670 * Without all of the following, resume will not attempt to take
8671 * down the NIC (it shouldn't really need to) and will just try
8672 * and bring the NIC back up. However that fails during the
8673 * ucode verification process. This then causes iwl_down to be
8674 * called *after* iwl_hw_nic_init() has succeeded -- which
8675 * then lets the next init sequence succeed. So, we've
8676 * replicated all of that NIC init code here... */
8677
8678 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
8679
8680 iwl_hw_nic_init(priv);
8681
8682 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
8683 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
8684 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
8685 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
8686 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
8687 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
8688
8689 /* tell the device to stop sending interrupts */
8690 iwl_disable_interrupts(priv);
8691
8692 spin_lock_irqsave(&priv->lock, flags);
8693 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
8694
8695 if (!iwl_grab_restricted_access(priv)) {
8696 iwl_write_restricted_reg(priv, APMG_CLK_DIS_REG,
8697 APMG_CLK_VAL_DMA_CLK_RQT);
8698 iwl_release_restricted_access(priv);
8699 }
8700 spin_unlock_irqrestore(&priv->lock, flags);
8701
8702 udelay(5);
8703
8704 iwl_hw_nic_reset(priv);
8705
8706 /* Bring the device back up */
8707 clear_bit(STATUS_IN_SUSPEND, &priv->status);
8708 queue_work(priv->workqueue, &priv->up);
8709}
8710
8711static int iwl_pci_resume(struct pci_dev *pdev)
8712{
8713 struct iwl_priv *priv = pci_get_drvdata(pdev);
8714 int err;
8715
8716 printk(KERN_INFO "Coming out of suspend...\n");
8717
b481de9c
ZY		 8718 pci_set_power_state(pdev, PCI_D0);
8719 err = pci_enable_device(pdev);
8720 pci_restore_state(pdev);
8721
8722 /*
8723 * Suspend/Resume resets the PCI configuration space, so we have to
8724 * re-disable the RETRY_TIMEOUT register (0x41) to keep PCI Tx retries
8725 * from interfering with C3 CPU state. pci_restore_state won't help
8726 * here since it only restores the first 64 bytes pci config header.
8727 */
8728 pci_write_config_byte(pdev, 0x41, 0x00);
8729
8730 iwl_resume(priv);
b481de9c
ZY		 8731
8732 return 0;
8733}
8734
8735#endif /* CONFIG_PM */
8736
8737/*****************************************************************************
8738 *
8739 * driver and module entry point
8740 *
8741 *****************************************************************************/
8742
8743static struct pci_driver iwl_driver = {
8744 .name = DRV_NAME,
8745 .id_table = iwl_hw_card_ids,
8746 .probe = iwl_pci_probe,
8747 .remove = __devexit_p(iwl_pci_remove),
8748#ifdef CONFIG_PM
8749 .suspend = iwl_pci_suspend,
8750 .resume = iwl_pci_resume,
8751#endif
8752};
8753
8754static int __init iwl_init(void)
8755{
8756
8757 int ret;
8758 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
8759 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
8760 ret = pci_register_driver(&iwl_driver);
8761 if (ret) {
8762 IWL_ERROR("Unable to initialize PCI module\n");
8763 return ret;
8764 }
8765#ifdef CONFIG_IWLWIFI_DEBUG
8766 ret = driver_create_file(&iwl_driver.driver, &driver_attr_debug_level);
8767 if (ret) {
8768 IWL_ERROR("Unable to create driver sysfs file\n");
8769 pci_unregister_driver(&iwl_driver);
8770 return ret;
8771 }
8772#endif
8773
8774 return ret;
8775}
8776
8777static void __exit iwl_exit(void)
8778{
8779#ifdef CONFIG_IWLWIFI_DEBUG
8780 driver_remove_file(&iwl_driver.driver, &driver_attr_debug_level);
8781#endif
8782 pci_unregister_driver(&iwl_driver);
8783}
8784
8785module_param_named(antenna, iwl_param_antenna, int, 0444);
8786MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
8787module_param_named(disable, iwl_param_disable, int, 0444);
8788MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
8789module_param_named(hwcrypto, iwl_param_hwcrypto, int, 0444);
8790MODULE_PARM_DESC(hwcrypto,
8791 "using hardware crypto engine (default 0 [software])\n");
8792module_param_named(debug, iwl_param_debug, int, 0444);
8793MODULE_PARM_DESC(debug, "debug output mask");
8794module_param_named(disable_hw_scan, iwl_param_disable_hw_scan, int, 0444);
8795MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
8796
8797module_param_named(queues_num, iwl_param_queues_num, int, 0444);
8798MODULE_PARM_DESC(queues_num, "number of hw queues.");
8799
8800/* QoS */
8801module_param_named(qos_enable, iwl_param_qos_enable, int, 0444);
8802MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
8803
8804module_exit(iwl_exit);
8805module_init(iwl_init);
Linux kernel - Deliverables
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