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[PATCH] rfkill: Fix documentation typos
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl4965-base.c
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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>
51#include <linux/skbuff.h>
52#include <linux/netdevice.h>
53#include <linux/etherdevice.h>
54#include <linux/if_arp.h>
55
56#include <net/ieee80211_radiotap.h>
57#include <net/mac80211.h>
58
59#include <asm/div64.h>
60
1156b2c6
ZY		 61#define IWL 4965
62
b481de9c
ZY		 63#include "iwlwifi.h"
64#include "iwl-4965.h"
65#include "iwl-helpers.h"
66
67#ifdef CONFIG_IWLWIFI_DEBUG
68u32 iwl_debug_level;
69#endif
70
71/******************************************************************************
72 *
73 * module boiler plate
74 *
75 ******************************************************************************/
76
77/* module parameters */
78int iwl_param_disable_hw_scan;
79int iwl_param_debug;
80int iwl_param_disable; /* def: enable radio */
81int iwl_param_antenna; /* def: 0 = both antennas (use diversity) */
82int iwl_param_hwcrypto; /* def: using software encryption */
83int iwl_param_qos_enable = 1;
84int iwl_param_queues_num = IWL_MAX_NUM_QUEUES;
85
86/*
87 * module name, copyright, version, etc.
88 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
89 */
90
91#define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
92
93#ifdef CONFIG_IWLWIFI_DEBUG
94#define VD "d"
95#else
96#define VD
97#endif
98
99#ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
100#define VS "s"
101#else
102#define VS
103#endif
104
105#define IWLWIFI_VERSION "0.1.15k" VD VS
106#define DRV_COPYRIGHT "Copyright(c) 2003-2007 Intel Corporation"
107#define DRV_VERSION IWLWIFI_VERSION
108
109/* Change firmware file name, using "-" and incrementing number,
110 * *only* when uCode interface or architecture changes so that it
111 * is not compatible with earlier drivers.
112 * This number will also appear in << 8 position of 1st dword of uCode file */
113#define IWL4965_UCODE_API "-1"
114
115MODULE_DESCRIPTION(DRV_DESCRIPTION);
116MODULE_VERSION(DRV_VERSION);
117MODULE_AUTHOR(DRV_COPYRIGHT);
118MODULE_LICENSE("GPL");
119
120__le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
121{
122 u16 fc = le16_to_cpu(hdr->frame_control);
123 int hdr_len = ieee80211_get_hdrlen(fc);
124
125 if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
126 return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
127 return NULL;
128}
129
130static const struct ieee80211_hw_mode *iwl_get_hw_mode(
131 struct iwl_priv *priv, int mode)
132{
133 int i;
134
135 for (i = 0; i < 3; i++)
136 if (priv->modes[i].mode == mode)
137 return &priv->modes[i];
138
139 return NULL;
140}
141
142static int iwl_is_empty_essid(const char *essid, int essid_len)
143{
144 /* Single white space is for Linksys APs */
145 if (essid_len == 1 && essid[0] == ' ')
146 return 1;
147
148 /* Otherwise, if the entire essid is 0, we assume it is hidden */
149 while (essid_len) {
150 essid_len--;
151 if (essid[essid_len] != '\0')
152 return 0;
153 }
154
155 return 1;
156}
157
158static const char *iwl_escape_essid(const char *essid, u8 essid_len)
159{
160 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
161 const char *s = essid;
162 char *d = escaped;
163
164 if (iwl_is_empty_essid(essid, essid_len)) {
165 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
166 return escaped;
167 }
168
169 essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
170 while (essid_len--) {
171 if (*s == '\0') {
172 *d++ = '\\';
173 *d++ = '0';
174 s++;
175 } else
176 *d++ = *s++;
177 }
178 *d = '\0';
179 return escaped;
180}
181
182static void iwl_print_hex_dump(int level, void *p, u32 len)
183{
184#ifdef CONFIG_IWLWIFI_DEBUG
185 if (!(iwl_debug_level & level))
186 return;
187
188 print_hex_dump(KERN_DEBUG, "iwl data: ", DUMP_PREFIX_OFFSET, 16, 1,
189 p, len, 1);
190#endif
191}
192
193/*************** DMA-QUEUE-GENERAL-FUNCTIONS *****
194 * DMA services
195 *
196 * Theory of operation
197 *
198 * A queue is a circular buffers with 'Read' and 'Write' pointers.
199 * 2 empty entries always kept in the buffer to protect from overflow.
200 *
201 * For Tx queue, there are low mark and high mark limits. If, after queuing
202 * the packet for Tx, free space become < low mark, Tx queue stopped. When
203 * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
204 * Tx queue resumed.
205 *
206 * The IPW operates with six queues, one receive queue in the device's
207 * sram, one transmit queue for sending commands to the device firmware,
208 * and four transmit queues for data.
209 ***************************************************/
210
211static int iwl_queue_space(const struct iwl_queue *q)
212{
213 int s = q->last_used - q->first_empty;
214
215 if (q->last_used > q->first_empty)
216 s -= q->n_bd;
217
218 if (s <= 0)
219 s += q->n_window;
220 /* keep some reserve to not confuse empty and full situations */
221 s -= 2;
222 if (s < 0)
223 s = 0;
224 return s;
225}
226
227/* XXX: n_bd must be power-of-two size */
228static inline int iwl_queue_inc_wrap(int index, int n_bd)
229{
230 return ++index & (n_bd - 1);
231}
232
233/* XXX: n_bd must be power-of-two size */
234static inline int iwl_queue_dec_wrap(int index, int n_bd)
235{
236 return --index & (n_bd - 1);
237}
238
239static inline int x2_queue_used(const struct iwl_queue *q, int i)
240{
241 return q->first_empty > q->last_used ?
242 (i >= q->last_used && i < q->first_empty) :
243 !(i < q->last_used && i >= q->first_empty);
244}
245
246static inline u8 get_cmd_index(struct iwl_queue *q, u32 index, int is_huge)
247{
248 if (is_huge)
249 return q->n_window;
250
251 return index & (q->n_window - 1);
252}
253
254static int iwl_queue_init(struct iwl_priv *priv, struct iwl_queue *q,
255 int count, int slots_num, u32 id)
256{
257 q->n_bd = count;
258 q->n_window = slots_num;
259 q->id = id;
260
261 /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
262 * and iwl_queue_dec_wrap are broken. */
263 BUG_ON(!is_power_of_2(count));
264
265 /* slots_num must be power-of-two size, otherwise
266 * get_cmd_index is broken. */
267 BUG_ON(!is_power_of_2(slots_num));
268
269 q->low_mark = q->n_window / 4;
270 if (q->low_mark < 4)
271 q->low_mark = 4;
272
273 q->high_mark = q->n_window / 8;
274 if (q->high_mark < 2)
275 q->high_mark = 2;
276
277 q->first_empty = q->last_used = 0;
278
279 return 0;
280}
281
282static int iwl_tx_queue_alloc(struct iwl_priv *priv,
283 struct iwl_tx_queue *txq, u32 id)
284{
285 struct pci_dev *dev = priv->pci_dev;
286
287 if (id != IWL_CMD_QUEUE_NUM) {
288 txq->txb = kmalloc(sizeof(txq->txb[0]) *
289 TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
290 if (!txq->txb) {
291 IWL_ERROR("kmalloc for auxilary BD "
292 "structures failed\n");
293 goto error;
294 }
295 } else
296 txq->txb = NULL;
297
298 txq->bd = pci_alloc_consistent(dev,
299 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
300 &txq->q.dma_addr);
301
302 if (!txq->bd) {
303 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
304 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
305 goto error;
306 }
307 txq->q.id = id;
308
309 return 0;
310
311 error:
312 if (txq->txb) {
313 kfree(txq->txb);
314 txq->txb = NULL;
315 }
316
317 return -ENOMEM;
318}
319
320int iwl_tx_queue_init(struct iwl_priv *priv,
321 struct iwl_tx_queue *txq, int slots_num, u32 txq_id)
322{
323 struct pci_dev *dev = priv->pci_dev;
324 int len;
325 int rc = 0;
326
327 /* alocate command space + one big command for scan since scan
328 * command is very huge the system will not have two scan at the
329 * same time */
330 len = sizeof(struct iwl_cmd) * slots_num;
331 if (txq_id == IWL_CMD_QUEUE_NUM)
332 len += IWL_MAX_SCAN_SIZE;
333 txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
334 if (!txq->cmd)
335 return -ENOMEM;
336
337 rc = iwl_tx_queue_alloc(priv, txq, txq_id);
338 if (rc) {
339 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
340
341 return -ENOMEM;
342 }
343 txq->need_update = 0;
344
345 /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
346 * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
347 BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
348 iwl_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
349
350 iwl_hw_tx_queue_init(priv, txq);
351
352 return 0;
353}
354
355/**
356 * iwl_tx_queue_free - Deallocate DMA queue.
357 * @txq: Transmit queue to deallocate.
358 *
359 * Empty queue by removing and destroying all BD's.
360 * Free all buffers. txq itself is not freed.
361 *
362 */
363void iwl_tx_queue_free(struct iwl_priv *priv, struct iwl_tx_queue *txq)
364{
365 struct iwl_queue *q = &txq->q;
366 struct pci_dev *dev = priv->pci_dev;
367 int len;
368
369 if (q->n_bd == 0)
370 return;
371
372 /* first, empty all BD's */
373 for (; q->first_empty != q->last_used;
374 q->last_used = iwl_queue_inc_wrap(q->last_used, q->n_bd))
375 iwl_hw_txq_free_tfd(priv, txq);
376
377 len = sizeof(struct iwl_cmd) * q->n_window;
378 if (q->id == IWL_CMD_QUEUE_NUM)
379 len += IWL_MAX_SCAN_SIZE;
380
381 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
382
383 /* free buffers belonging to queue itself */
384 if (txq->q.n_bd)
385 pci_free_consistent(dev, sizeof(struct iwl_tfd_frame) *
386 txq->q.n_bd, txq->bd, txq->q.dma_addr);
387
388 if (txq->txb) {
389 kfree(txq->txb);
390 txq->txb = NULL;
391 }
392
393 /* 0 fill whole structure */
394 memset(txq, 0, sizeof(*txq));
395}
396
397const u8 BROADCAST_ADDR[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
398
399/*************** STATION TABLE MANAGEMENT ****
400 *
401 * NOTE: This needs to be overhauled to better synchronize between
402 * how the iwl-4965.c is using iwl_hw_find_station vs. iwl-3945.c
403 *
404 * mac80211 should also be examined to determine if sta_info is duplicating
405 * the functionality provided here
406 */
407
408/**************************************************************/
409
410static u8 iwl_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
411{
412 int index = IWL_INVALID_STATION;
413 int i;
414 unsigned long flags;
415
416 spin_lock_irqsave(&priv->sta_lock, flags);
417
418 if (is_ap)
419 index = IWL_AP_ID;
420 else if (is_broadcast_ether_addr(addr))
421 index = priv->hw_setting.bcast_sta_id;
422 else
423 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
424 if (priv->stations[i].used &&
425 !compare_ether_addr(priv->stations[i].sta.sta.addr,
426 addr)) {
427 index = i;
428 break;
429 }
430
431 if (unlikely(index == IWL_INVALID_STATION))
432 goto out;
433
434 if (priv->stations[index].used) {
435 priv->stations[index].used = 0;
436 priv->num_stations--;
437 }
438
439 BUG_ON(priv->num_stations < 0);
440
441out:
442 spin_unlock_irqrestore(&priv->sta_lock, flags);
443 return 0;
444}
445
446static void iwl_clear_stations_table(struct iwl_priv *priv)
447{
448 unsigned long flags;
449
450 spin_lock_irqsave(&priv->sta_lock, flags);
451
452 priv->num_stations = 0;
453 memset(priv->stations, 0, sizeof(priv->stations));
454
455 spin_unlock_irqrestore(&priv->sta_lock, flags);
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);
b481de9c
ZY		 465
466 spin_lock_irqsave(&priv->sta_lock, flags_spin);
467 if (is_ap)
468 index = IWL_AP_ID;
469 else if (is_broadcast_ether_addr(addr))
470 index = priv->hw_setting.bcast_sta_id;
471 else
472 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
473 if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
474 addr)) {
475 index = i;
476 break;
477 }
478
479 if (!priv->stations[i].used &&
480 index == IWL_INVALID_STATION)
481 index = i;
482 }
483
484
485 /* These twh conditions has the same outcome but keep them separate
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
498
0795af57 499 IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
b481de9c
ZY		 500 station = &priv->stations[index];
501 station->used = 1;
502 priv->num_stations++;
503
504 memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd));
505 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
506 station->sta.mode = 0;
507 station->sta.sta.sta_id = index;
508 station->sta.station_flags = 0;
509
510#ifdef CONFIG_IWLWIFI_HT
511 /* BCAST station and IBSS stations do not work in HT mode */
512 if (index != priv->hw_setting.bcast_sta_id &&
513 priv->iw_mode != IEEE80211_IF_TYPE_IBSS)
514 iwl4965_set_ht_add_station(priv, index);
515#endif /*CONFIG_IWLWIFI_HT*/
516
517 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
518 iwl_send_add_station(priv, &station->sta, flags);
519 return index;
520
521}
522
523/*************** DRIVER STATUS FUNCTIONS *****/
524
525static inline int iwl_is_ready(struct iwl_priv *priv)
526{
527 /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
528 * set but EXIT_PENDING is not */
529 return test_bit(STATUS_READY, &priv->status) &&
530 test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
531 !test_bit(STATUS_EXIT_PENDING, &priv->status);
532}
533
534static inline int iwl_is_alive(struct iwl_priv *priv)
535{
536 return test_bit(STATUS_ALIVE, &priv->status);
537}
538
539static inline int iwl_is_init(struct iwl_priv *priv)
540{
541 return test_bit(STATUS_INIT, &priv->status);
542}
543
544static inline int iwl_is_rfkill(struct iwl_priv *priv)
545{
546 return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
547 test_bit(STATUS_RF_KILL_SW, &priv->status);
548}
549
550static inline int iwl_is_ready_rf(struct iwl_priv *priv)
551{
552
553 if (iwl_is_rfkill(priv))
554 return 0;
555
556 return iwl_is_ready(priv);
557}
558
559/*************** HOST COMMAND QUEUE FUNCTIONS *****/
560
561#define IWL_CMD(x) case x : return #x
562
563static const char *get_cmd_string(u8 cmd)
564{
565 switch (cmd) {
566 IWL_CMD(REPLY_ALIVE);
567 IWL_CMD(REPLY_ERROR);
568 IWL_CMD(REPLY_RXON);
569 IWL_CMD(REPLY_RXON_ASSOC);
570 IWL_CMD(REPLY_QOS_PARAM);
571 IWL_CMD(REPLY_RXON_TIMING);
572 IWL_CMD(REPLY_ADD_STA);
573 IWL_CMD(REPLY_REMOVE_STA);
574 IWL_CMD(REPLY_REMOVE_ALL_STA);
575 IWL_CMD(REPLY_TX);
576 IWL_CMD(REPLY_RATE_SCALE);
577 IWL_CMD(REPLY_LEDS_CMD);
578 IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
579 IWL_CMD(RADAR_NOTIFICATION);
580 IWL_CMD(REPLY_QUIET_CMD);
581 IWL_CMD(REPLY_CHANNEL_SWITCH);
582 IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
583 IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
584 IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
585 IWL_CMD(POWER_TABLE_CMD);
586 IWL_CMD(PM_SLEEP_NOTIFICATION);
587 IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
588 IWL_CMD(REPLY_SCAN_CMD);
589 IWL_CMD(REPLY_SCAN_ABORT_CMD);
590 IWL_CMD(SCAN_START_NOTIFICATION);
591 IWL_CMD(SCAN_RESULTS_NOTIFICATION);
592 IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
593 IWL_CMD(BEACON_NOTIFICATION);
594 IWL_CMD(REPLY_TX_BEACON);
595 IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
596 IWL_CMD(QUIET_NOTIFICATION);
597 IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
598 IWL_CMD(MEASURE_ABORT_NOTIFICATION);
599 IWL_CMD(REPLY_BT_CONFIG);
600 IWL_CMD(REPLY_STATISTICS_CMD);
601 IWL_CMD(STATISTICS_NOTIFICATION);
602 IWL_CMD(REPLY_CARD_STATE_CMD);
603 IWL_CMD(CARD_STATE_NOTIFICATION);
604 IWL_CMD(MISSED_BEACONS_NOTIFICATION);
605 IWL_CMD(REPLY_CT_KILL_CONFIG_CMD);
606 IWL_CMD(SENSITIVITY_CMD);
607 IWL_CMD(REPLY_PHY_CALIBRATION_CMD);
608 IWL_CMD(REPLY_RX_PHY_CMD);
609 IWL_CMD(REPLY_RX_MPDU_CMD);
610 IWL_CMD(REPLY_4965_RX);
611 IWL_CMD(REPLY_COMPRESSED_BA);
612 default:
613 return "UNKNOWN";
614
615 }
616}
617
618#define HOST_COMPLETE_TIMEOUT (HZ / 2)
619
620/**
621 * iwl_enqueue_hcmd - enqueue a uCode command
622 * @priv: device private data point
623 * @cmd: a point to the ucode command structure
624 *
625 * The function returns < 0 values to indicate the operation is
626 * failed. On success, it turns the index (> 0) of command in the
627 * command queue.
628 */
629static int iwl_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
630{
631 struct iwl_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
632 struct iwl_queue *q = &txq->q;
633 struct iwl_tfd_frame *tfd;
634 u32 *control_flags;
635 struct iwl_cmd *out_cmd;
636 u32 idx;
637 u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
638 dma_addr_t phys_addr;
639 int ret;
640 unsigned long flags;
641
642 /* If any of the command structures end up being larger than
643 * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
644 * we will need to increase the size of the TFD entries */
645 BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
646 !(cmd->meta.flags & CMD_SIZE_HUGE));
647
648 if (iwl_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
649 IWL_ERROR("No space for Tx\n");
650 return -ENOSPC;
651 }
652
653 spin_lock_irqsave(&priv->hcmd_lock, flags);
654
655 tfd = &txq->bd[q->first_empty];
656 memset(tfd, 0, sizeof(*tfd));
657
658 control_flags = (u32 *) tfd;
659
660 idx = get_cmd_index(q, q->first_empty, cmd->meta.flags & CMD_SIZE_HUGE);
661 out_cmd = &txq->cmd[idx];
662
663 out_cmd->hdr.cmd = cmd->id;
664 memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
665 memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
666
667 /* At this point, the out_cmd now has all of the incoming cmd
668 * information */
669
670 out_cmd->hdr.flags = 0;
671 out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
672 INDEX_TO_SEQ(q->first_empty));
673 if (out_cmd->meta.flags & CMD_SIZE_HUGE)
674 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
675
676 phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
677 offsetof(struct iwl_cmd, hdr);
678 iwl_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
679
680 IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
681 "%d bytes at %d[%d]:%d\n",
682 get_cmd_string(out_cmd->hdr.cmd),
683 out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
684 fix_size, q->first_empty, idx, IWL_CMD_QUEUE_NUM);
685
686 txq->need_update = 1;
687 ret = iwl4965_tx_queue_update_wr_ptr(priv, txq, 0);
688 q->first_empty = iwl_queue_inc_wrap(q->first_empty, q->n_bd);
689 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
846/**
847 * iwl_rxon_add_station - add station into station table.
848 *
849 * there is only one AP station with id= IWL_AP_ID
850 * NOTE: mutex must be held before calling the this fnction
851*/
852static int iwl_rxon_add_station(struct iwl_priv *priv,
853 const u8 *addr, int is_ap)
854{
855 u8 rc;
856
857 /* Remove this station if it happens to already exist */
858 iwl_remove_station(priv, addr, is_ap);
859
860 rc = iwl_add_station(priv, addr, is_ap, 0);
861
862 iwl4965_add_station(priv, addr, is_ap);
863
864 return rc;
865}
866
867/**
868 * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
869 * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
870 * @channel: Any channel valid for the requested phymode
871
872 * In addition to setting the staging RXON, priv->phymode is also set.
873 *
874 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
875 * in the staging RXON flag structure based on the phymode
876 */
877static int iwl_set_rxon_channel(struct iwl_priv *priv, u8 phymode, u16 channel)
878{
879 if (!iwl_get_channel_info(priv, phymode, channel)) {
880 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
881 channel, phymode);
882 return -EINVAL;
883 }
884
885 if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
886 (priv->phymode == phymode))
887 return 0;
888
889 priv->staging_rxon.channel = cpu_to_le16(channel);
890 if (phymode == MODE_IEEE80211A)
891 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
892 else
893 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
894
895 priv->phymode = phymode;
896
897 IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, phymode);
898
899 return 0;
900}
901
902/**
903 * iwl_check_rxon_cmd - validate RXON structure is valid
904 *
905 * NOTE: This is really only useful during development and can eventually
906 * be #ifdef'd out once the driver is stable and folks aren't actively
907 * making changes
908 */
909static int iwl_check_rxon_cmd(struct iwl_rxon_cmd *rxon)
910{
911 int error = 0;
912 int counter = 1;
913
914 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
915 error |= le32_to_cpu(rxon->flags &
916 (RXON_FLG_TGJ_NARROW_BAND_MSK |
917 RXON_FLG_RADAR_DETECT_MSK));
918 if (error)
919 IWL_WARNING("check 24G fields %d | %d\n",
920 counter++, error);
921 } else {
922 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
923 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
924 if (error)
925 IWL_WARNING("check 52 fields %d | %d\n",
926 counter++, error);
927 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
928 if (error)
929 IWL_WARNING("check 52 CCK %d | %d\n",
930 counter++, error);
931 }
932 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
933 if (error)
934 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
935
936 /* make sure basic rates 6Mbps and 1Mbps are supported */
937 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
938 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
939 if (error)
940 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
941
942 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
943 if (error)
944 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
945
946 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
947 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
948 if (error)
949 IWL_WARNING("check CCK and short slot %d | %d\n",
950 counter++, error);
951
952 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
953 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
954 if (error)
955 IWL_WARNING("check CCK & auto detect %d | %d\n",
956 counter++, error);
957
958 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
959 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
960 if (error)
961 IWL_WARNING("check TGG and auto detect %d | %d\n",
962 counter++, error);
963
964 if (error)
965 IWL_WARNING("Tuning to channel %d\n",
966 le16_to_cpu(rxon->channel));
967
968 if (error) {
969 IWL_ERROR("Not a valid iwl_rxon_assoc_cmd field values\n");
970 return -1;
971 }
972 return 0;
973}
974
975/**
976 * iwl_full_rxon_required - determine if RXON_ASSOC can be used in RXON commit
977 * @priv: staging_rxon is comapred to active_rxon
978 *
979 * If the RXON structure is changing sufficient to require a new
980 * tune or to clear and reset the RXON_FILTER_ASSOC_MSK then return 1
981 * to indicate a new tune is required.
982 */
983static int iwl_full_rxon_required(struct iwl_priv *priv)
984{
985
986 /* These items are only settable from the full RXON command */
987 if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
988 compare_ether_addr(priv->staging_rxon.bssid_addr,
989 priv->active_rxon.bssid_addr) ||
990 compare_ether_addr(priv->staging_rxon.node_addr,
991 priv->active_rxon.node_addr) ||
992 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
993 priv->active_rxon.wlap_bssid_addr) ||
994 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
995 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
996 (priv->staging_rxon.air_propagation !=
997 priv->active_rxon.air_propagation) ||
998 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
999 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
1000 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
1001 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
1002 (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
1003 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
1004 return 1;
1005
1006 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
1007 * be updated with the RXON_ASSOC command -- however only some
1008 * flag transitions are allowed using RXON_ASSOC */
1009
1010 /* Check if we are not switching bands */
1011 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
1012 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
1013 return 1;
1014
1015 /* Check if we are switching association toggle */
1016 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
1017 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
1018 return 1;
1019
1020 return 0;
1021}
1022
1023static int iwl_send_rxon_assoc(struct iwl_priv *priv)
1024{
1025 int rc = 0;
1026 struct iwl_rx_packet *res = NULL;
1027 struct iwl_rxon_assoc_cmd rxon_assoc;
1028 struct iwl_host_cmd cmd = {
1029 .id = REPLY_RXON_ASSOC,
1030 .len = sizeof(rxon_assoc),
1031 .meta.flags = CMD_WANT_SKB,
1032 .data = &rxon_assoc,
1033 };
1034 const struct iwl_rxon_cmd *rxon1 = &priv->staging_rxon;
1035 const struct iwl_rxon_cmd *rxon2 = &priv->active_rxon;
1036
1037 if ((rxon1->flags == rxon2->flags) &&
1038 (rxon1->filter_flags == rxon2->filter_flags) &&
1039 (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1040 (rxon1->ofdm_ht_single_stream_basic_rates ==
1041 rxon2->ofdm_ht_single_stream_basic_rates) &&
1042 (rxon1->ofdm_ht_dual_stream_basic_rates ==
1043 rxon2->ofdm_ht_dual_stream_basic_rates) &&
1044 (rxon1->rx_chain == rxon2->rx_chain) &&
1045 (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1046 IWL_DEBUG_INFO("Using current RXON_ASSOC. Not resending.\n");
1047 return 0;
1048 }
1049
1050 rxon_assoc.flags = priv->staging_rxon.flags;
1051 rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1052 rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1053 rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1054 rxon_assoc.reserved = 0;
1055 rxon_assoc.ofdm_ht_single_stream_basic_rates =
1056 priv->staging_rxon.ofdm_ht_single_stream_basic_rates;
1057 rxon_assoc.ofdm_ht_dual_stream_basic_rates =
1058 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates;
1059 rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain;
1060
1061 rc = iwl_send_cmd_sync(priv, &cmd);
1062 if (rc)
1063 return rc;
1064
1065 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1066 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1067 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1068 rc = -EIO;
1069 }
1070
1071 priv->alloc_rxb_skb--;
1072 dev_kfree_skb_any(cmd.meta.u.skb);
1073
1074 return rc;
1075}
1076
1077/**
1078 * iwl_commit_rxon - commit staging_rxon to hardware
1079 *
1080 * The RXON command in staging_rxon is commited to the hardware and
1081 * the active_rxon structure is updated with the new data. This
1082 * function correctly transitions out of the RXON_ASSOC_MSK state if
1083 * a HW tune is required based on the RXON structure changes.
1084 */
1085static int iwl_commit_rxon(struct iwl_priv *priv)
1086{
1087 /* cast away the const for active_rxon in this function */
1088 struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
0795af57 1089 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 1090 int rc = 0;
1091
1092 if (!iwl_is_alive(priv))
1093 return -1;
1094
1095 /* always get timestamp with Rx frame */
1096 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
1097
1098 rc = iwl_check_rxon_cmd(&priv->staging_rxon);
1099 if (rc) {
1100 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
1101 return -EINVAL;
1102 }
1103
1104 /* If we don't need to send a full RXON, we can use
1105 * iwl_rxon_assoc_cmd which is used to reconfigure filter
1106 * and other flags for the current radio configuration. */
1107 if (!iwl_full_rxon_required(priv)) {
1108 rc = iwl_send_rxon_assoc(priv);
1109 if (rc) {
1110 IWL_ERROR("Error setting RXON_ASSOC "
1111 "configuration (%d).\n", rc);
1112 return rc;
1113 }
1114
1115 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1116
1117 return 0;
1118 }
1119
1120 /* station table will be cleared */
1121 priv->assoc_station_added = 0;
1122
1123#ifdef CONFIG_IWLWIFI_SENSITIVITY
1124 priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1125 if (!priv->error_recovering)
1126 priv->start_calib = 0;
1127
1128 iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1129#endif /* CONFIG_IWLWIFI_SENSITIVITY */
1130
1131 /* If we are currently associated and the new config requires
1132 * an RXON_ASSOC and the new config wants the associated mask enabled,
1133 * we must clear the associated from the active configuration
1134 * before we apply the new config */
1135 if (iwl_is_associated(priv) &&
1136 (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
1137 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1138 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1139
1140 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
1141 sizeof(struct iwl_rxon_cmd),
1142 &priv->active_rxon);
1143
1144 /* If the mask clearing failed then we set
1145 * active_rxon back to what it was previously */
1146 if (rc) {
1147 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1148 IWL_ERROR("Error clearing ASSOC_MSK on current "
1149 "configuration (%d).\n", rc);
1150 return rc;
1151 }
1152
1153 /* The RXON bit toggling will have cleared out the
1154 * station table in the uCode, so blank it in the driver
1155 * as well */
1156 iwl_clear_stations_table(priv);
1157 } else if (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) {
1158 /* When switching from non-associated to associated, the
1159 * uCode clears out the station table; so clear it in the
1160 * driver as well */
1161 iwl_clear_stations_table(priv);
1162 }
1163
1164 IWL_DEBUG_INFO("Sending RXON\n"
1165 "* with%s RXON_FILTER_ASSOC_MSK\n"
1166 "* channel = %d\n"
0795af57 1167 "* bssid = %s\n",
b481de9c
ZY		 1168 ((priv->staging_rxon.filter_flags &
1169 RXON_FILTER_ASSOC_MSK) ? "" : "out"),
1170 le16_to_cpu(priv->staging_rxon.channel),
0795af57 1171 print_mac(mac, priv->staging_rxon.bssid_addr));
b481de9c
ZY		 1172
1173 /* Apply the new configuration */
1174 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
1175 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
1176 if (rc) {
1177 IWL_ERROR("Error setting new configuration (%d).\n", rc);
1178 return rc;
1179 }
1180
1181#ifdef CONFIG_IWLWIFI_SENSITIVITY
1182 if (!priv->error_recovering)
1183 priv->start_calib = 0;
1184
1185 priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1186 iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1187#endif /* CONFIG_IWLWIFI_SENSITIVITY */
1188
1189 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1190
1191 /* If we issue a new RXON command which required a tune then we must
1192 * send a new TXPOWER command or we won't be able to Tx any frames */
1193 rc = iwl_hw_reg_send_txpower(priv);
1194 if (rc) {
1195 IWL_ERROR("Error setting Tx power (%d).\n", rc);
1196 return rc;
1197 }
1198
1199 /* Add the broadcast address so we can send broadcast frames */
1200 if (iwl_rxon_add_station(priv, BROADCAST_ADDR, 0) ==
1201 IWL_INVALID_STATION) {
1202 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1203 return -EIO;
1204 }
1205
1206 /* If we have set the ASSOC_MSK and we are in BSS mode then
1207 * add the IWL_AP_ID to the station rate table */
1208 if (iwl_is_associated(priv) &&
1209 (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
1210 if (iwl_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
1211 == IWL_INVALID_STATION) {
1212 IWL_ERROR("Error adding AP address for transmit.\n");
1213 return -EIO;
1214 }
1215 priv->assoc_station_added = 1;
1216 }
1217
1218 return 0;
1219}
1220
1221static int iwl_send_bt_config(struct iwl_priv *priv)
1222{
1223 struct iwl_bt_cmd bt_cmd = {
1224 .flags = 3,
1225 .lead_time = 0xAA,
1226 .max_kill = 1,
1227 .kill_ack_mask = 0,
1228 .kill_cts_mask = 0,
1229 };
1230
1231 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1232 sizeof(struct iwl_bt_cmd), &bt_cmd);
1233}
1234
1235static int iwl_send_scan_abort(struct iwl_priv *priv)
1236{
1237 int rc = 0;
1238 struct iwl_rx_packet *res;
1239 struct iwl_host_cmd cmd = {
1240 .id = REPLY_SCAN_ABORT_CMD,
1241 .meta.flags = CMD_WANT_SKB,
1242 };
1243
1244 /* If there isn't a scan actively going on in the hardware
1245 * then we are in between scan bands and not actually
1246 * actively scanning, so don't send the abort command */
1247 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1248 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1249 return 0;
1250 }
1251
1252 rc = iwl_send_cmd_sync(priv, &cmd);
1253 if (rc) {
1254 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1255 return rc;
1256 }
1257
1258 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1259 if (res->u.status != CAN_ABORT_STATUS) {
1260 /* The scan abort will return 1 for success or
1261 * 2 for "failure". A failure condition can be
1262 * due to simply not being in an active scan which
1263 * can occur if we send the scan abort before we
1264 * the microcode has notified us that a scan is
1265 * completed. */
1266 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1267 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1268 clear_bit(STATUS_SCAN_HW, &priv->status);
1269 }
1270
1271 dev_kfree_skb_any(cmd.meta.u.skb);
1272
1273 return rc;
1274}
1275
1276static int iwl_card_state_sync_callback(struct iwl_priv *priv,
1277 struct iwl_cmd *cmd,
1278 struct sk_buff *skb)
1279{
1280 return 1;
1281}
1282
1283/*
1284 * CARD_STATE_CMD
1285 *
1286 * Use: Sets the internal card state to enable, disable, or halt
1287 *
1288 * When in the 'enable' state the card operates as normal.
1289 * When in the 'disable' state, the card enters into a low power mode.
1290 * When in the 'halt' state, the card is shut down and must be fully
1291 * restarted to come back on.
1292 */
1293static int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
1294{
1295 struct iwl_host_cmd cmd = {
1296 .id = REPLY_CARD_STATE_CMD,
1297 .len = sizeof(u32),
1298 .data = &flags,
1299 .meta.flags = meta_flag,
1300 };
1301
1302 if (meta_flag & CMD_ASYNC)
1303 cmd.meta.u.callback = iwl_card_state_sync_callback;
1304
1305 return iwl_send_cmd(priv, &cmd);
1306}
1307
1308static int iwl_add_sta_sync_callback(struct iwl_priv *priv,
1309 struct iwl_cmd *cmd, struct sk_buff *skb)
1310{
1311 struct iwl_rx_packet *res = NULL;
1312
1313 if (!skb) {
1314 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1315 return 1;
1316 }
1317
1318 res = (struct iwl_rx_packet *)skb->data;
1319 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1320 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1321 res->hdr.flags);
1322 return 1;
1323 }
1324
1325 switch (res->u.add_sta.status) {
1326 case ADD_STA_SUCCESS_MSK:
1327 break;
1328 default:
1329 break;
1330 }
1331
1332 /* We didn't cache the SKB; let the caller free it */
1333 return 1;
1334}
1335
1336int iwl_send_add_station(struct iwl_priv *priv,
1337 struct iwl_addsta_cmd *sta, u8 flags)
1338{
1339 struct iwl_rx_packet *res = NULL;
1340 int rc = 0;
1341 struct iwl_host_cmd cmd = {
1342 .id = REPLY_ADD_STA,
1343 .len = sizeof(struct iwl_addsta_cmd),
1344 .meta.flags = flags,
1345 .data = sta,
1346 };
1347
1348 if (flags & CMD_ASYNC)
1349 cmd.meta.u.callback = iwl_add_sta_sync_callback;
1350 else
1351 cmd.meta.flags |= CMD_WANT_SKB;
1352
1353 rc = iwl_send_cmd(priv, &cmd);
1354
1355 if (rc || (flags & CMD_ASYNC))
1356 return rc;
1357
1358 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1359 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1360 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1361 res->hdr.flags);
1362 rc = -EIO;
1363 }
1364
1365 if (rc == 0) {
1366 switch (res->u.add_sta.status) {
1367 case ADD_STA_SUCCESS_MSK:
1368 IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1369 break;
1370 default:
1371 rc = -EIO;
1372 IWL_WARNING("REPLY_ADD_STA failed\n");
1373 break;
1374 }
1375 }
1376
1377 priv->alloc_rxb_skb--;
1378 dev_kfree_skb_any(cmd.meta.u.skb);
1379
1380 return rc;
1381}
1382
1383static int iwl_update_sta_key_info(struct iwl_priv *priv,
1384 struct ieee80211_key_conf *keyconf,
1385 u8 sta_id)
1386{
1387 unsigned long flags;
1388 __le16 key_flags = 0;
1389
1390 switch (keyconf->alg) {
1391 case ALG_CCMP:
1392 key_flags |= STA_KEY_FLG_CCMP;
1393 key_flags |= cpu_to_le16(
1394 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1395 key_flags &= ~STA_KEY_FLG_INVALID;
1396 break;
1397 case ALG_TKIP:
1398 case ALG_WEP:
1399 return -EINVAL;
1400 default:
1401 return -EINVAL;
1402 }
1403 spin_lock_irqsave(&priv->sta_lock, flags);
1404 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1405 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1406 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1407 keyconf->keylen);
1408
1409 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1410 keyconf->keylen);
1411 priv->stations[sta_id].sta.key.key_flags = key_flags;
1412 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1413 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1414
1415 spin_unlock_irqrestore(&priv->sta_lock, flags);
1416
1417 IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1418 iwl_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1419 return 0;
1420}
1421
1422static int iwl_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
1423{
1424 unsigned long flags;
1425
1426 spin_lock_irqsave(&priv->sta_lock, flags);
1427 memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl_hw_key));
1428 memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl_keyinfo));
1429 priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1430 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1431 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1432 spin_unlock_irqrestore(&priv->sta_lock, flags);
1433
1434 IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1435 iwl_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1436 return 0;
1437}
1438
1439static void iwl_clear_free_frames(struct iwl_priv *priv)
1440{
1441 struct list_head *element;
1442
1443 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1444 priv->frames_count);
1445
1446 while (!list_empty(&priv->free_frames)) {
1447 element = priv->free_frames.next;
1448 list_del(element);
1449 kfree(list_entry(element, struct iwl_frame, list));
1450 priv->frames_count--;
1451 }
1452
1453 if (priv->frames_count) {
1454 IWL_WARNING("%d frames still in use. Did we lose one?\n",
1455 priv->frames_count);
1456 priv->frames_count = 0;
1457 }
1458}
1459
1460static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
1461{
1462 struct iwl_frame *frame;
1463 struct list_head *element;
1464 if (list_empty(&priv->free_frames)) {
1465 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1466 if (!frame) {
1467 IWL_ERROR("Could not allocate frame!\n");
1468 return NULL;
1469 }
1470
1471 priv->frames_count++;
1472 return frame;
1473 }
1474
1475 element = priv->free_frames.next;
1476 list_del(element);
1477 return list_entry(element, struct iwl_frame, list);
1478}
1479
1480static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
1481{
1482 memset(frame, 0, sizeof(*frame));
1483 list_add(&frame->list, &priv->free_frames);
1484}
1485
1486unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
1487 struct ieee80211_hdr *hdr,
1488 const u8 *dest, int left)
1489{
1490
1491 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
1492 ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1493 (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1494 return 0;
1495
1496 if (priv->ibss_beacon->len > left)
1497 return 0;
1498
1499 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1500
1501 return priv->ibss_beacon->len;
1502}
1503
1504int iwl_rate_index_from_plcp(int plcp)
1505{
1506 int i = 0;
1507
1508 if (plcp & RATE_MCS_HT_MSK) {
1509 i = (plcp & 0xff);
1510
1511 if (i >= IWL_RATE_MIMO_6M_PLCP)
1512 i = i - IWL_RATE_MIMO_6M_PLCP;
1513
1514 i += IWL_FIRST_OFDM_RATE;
1515 /* skip 9M not supported in ht*/
1516 if (i >= IWL_RATE_9M_INDEX)
1517 i += 1;
1518 if ((i >= IWL_FIRST_OFDM_RATE) &&
1519 (i <= IWL_LAST_OFDM_RATE))
1520 return i;
1521 } else {
1522 for (i = 0; i < ARRAY_SIZE(iwl_rates); i++)
1523 if (iwl_rates[i].plcp == (plcp &0xFF))
1524 return i;
1525 }
1526 return -1;
1527}
1528
1529static u8 iwl_rate_get_lowest_plcp(int rate_mask)
1530{
1531 u8 i;
1532
1533 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1534 i = iwl_rates[i].next_ieee) {
1535 if (rate_mask & (1 << i))
1536 return iwl_rates[i].plcp;
1537 }
1538
1539 return IWL_RATE_INVALID;
1540}
1541
1542static int iwl_send_beacon_cmd(struct iwl_priv *priv)
1543{
1544 struct iwl_frame *frame;
1545 unsigned int frame_size;
1546 int rc;
1547 u8 rate;
1548
1549 frame = iwl_get_free_frame(priv);
1550
1551 if (!frame) {
1552 IWL_ERROR("Could not obtain free frame buffer for beacon "
1553 "command.\n");
1554 return -ENOMEM;
1555 }
1556
1557 if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1558 rate = iwl_rate_get_lowest_plcp(priv->active_rate_basic &
1559 0xFF0);
1560 if (rate == IWL_INVALID_RATE)
1561 rate = IWL_RATE_6M_PLCP;
1562 } else {
1563 rate = iwl_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1564 if (rate == IWL_INVALID_RATE)
1565 rate = IWL_RATE_1M_PLCP;
1566 }
1567
1568 frame_size = iwl_hw_get_beacon_cmd(priv, frame, rate);
1569
1570 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1571 &frame->u.cmd[0]);
1572
1573 iwl_free_frame(priv, frame);
1574
1575 return rc;
1576}
1577
1578/******************************************************************************
1579 *
1580 * EEPROM related functions
1581 *
1582 ******************************************************************************/
1583
1584static void get_eeprom_mac(struct iwl_priv *priv, u8 *mac)
1585{
1586 memcpy(mac, priv->eeprom.mac_address, 6);
1587}
1588
1589/**
1590 * iwl_eeprom_init - read EEPROM contents
1591 *
1592 * Load the EEPROM from adapter into priv->eeprom
1593 *
1594 * NOTE: This routine uses the non-debug IO access functions.
1595 */
1596int iwl_eeprom_init(struct iwl_priv *priv)
1597{
1598 u16 *e = (u16 *)&priv->eeprom;
1599 u32 gp = iwl_read32(priv, CSR_EEPROM_GP);
1600 u32 r;
1601 int sz = sizeof(priv->eeprom);
1602 int rc;
1603 int i;
1604 u16 addr;
1605
1606 /* The EEPROM structure has several padding buffers within it
1607 * and when adding new EEPROM maps is subject to programmer errors
1608 * which may be very difficult to identify without explicitly
1609 * checking the resulting size of the eeprom map. */
1610 BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);
1611
1612 if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1613 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp);
1614 return -ENOENT;
1615 }
1616
1617 rc = iwl_eeprom_aqcuire_semaphore(priv);
1618 if (rc < 0) {
1619 IWL_ERROR("Failed to aqcuire EEPROM semaphore.\n");
1620 return -ENOENT;
1621 }
1622
1623 /* eeprom is an array of 16bit values */
1624 for (addr = 0; addr < sz; addr += sizeof(u16)) {
1625 _iwl_write32(priv, CSR_EEPROM_REG, addr << 1);
1626 _iwl_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1627
1628 for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT;
1629 i += IWL_EEPROM_ACCESS_DELAY) {
1630 r = _iwl_read_restricted(priv, CSR_EEPROM_REG);
1631 if (r & CSR_EEPROM_REG_READ_VALID_MSK)
1632 break;
1633 udelay(IWL_EEPROM_ACCESS_DELAY);
1634 }
1635
1636 if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) {
1637 IWL_ERROR("Time out reading EEPROM[%d]", addr);
1638 rc = -ETIMEDOUT;
1639 goto done;
1640 }
1641 e[addr / 2] = le16_to_cpu(r >> 16);
1642 }
1643 rc = 0;
1644
1645done:
1646 iwl_eeprom_release_semaphore(priv);
1647 return rc;
1648}
1649
1650/******************************************************************************
1651 *
1652 * Misc. internal state and helper functions
1653 *
1654 ******************************************************************************/
1655#ifdef CONFIG_IWLWIFI_DEBUG
1656
1657/**
1658 * iwl_report_frame - dump frame to syslog during debug sessions
1659 *
1660 * hack this function to show different aspects of received frames,
1661 * including selective frame dumps.
1662 * group100 parameter selects whether to show 1 out of 100 good frames.
1663 *
1664 * TODO: ieee80211_hdr stuff is common to 3945 and 4965, so frame type
1665 * info output is okay, but some of this stuff (e.g. iwl_rx_frame_stats)
1666 * is 3945-specific and gives bad output for 4965. Need to split the
1667 * functionality, keep common stuff here.
1668 */
1669void iwl_report_frame(struct iwl_priv *priv,
1670 struct iwl_rx_packet *pkt,
1671 struct ieee80211_hdr *header, int group100)
1672{
1673 u32 to_us;
1674 u32 print_summary = 0;
1675 u32 print_dump = 0; /* set to 1 to dump all frames' contents */
1676 u32 hundred = 0;
1677 u32 dataframe = 0;
1678 u16 fc;
1679 u16 seq_ctl;
1680 u16 channel;
1681 u16 phy_flags;
1682 int rate_sym;
1683 u16 length;
1684 u16 status;
1685 u16 bcn_tmr;
1686 u32 tsf_low;
1687 u64 tsf;
1688 u8 rssi;
1689 u8 agc;
1690 u16 sig_avg;
1691 u16 noise_diff;
1692 struct iwl_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
1693 struct iwl_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
1694 struct iwl_rx_frame_end *rx_end = IWL_RX_END(pkt);
1695 u8 *data = IWL_RX_DATA(pkt);
1696
1697 /* MAC header */
1698 fc = le16_to_cpu(header->frame_control);
1699 seq_ctl = le16_to_cpu(header->seq_ctrl);
1700
1701 /* metadata */
1702 channel = le16_to_cpu(rx_hdr->channel);
1703 phy_flags = le16_to_cpu(rx_hdr->phy_flags);
1704 rate_sym = rx_hdr->rate;
1705 length = le16_to_cpu(rx_hdr->len);
1706
1707 /* end-of-frame status and timestamp */
1708 status = le32_to_cpu(rx_end->status);
1709 bcn_tmr = le32_to_cpu(rx_end->beacon_timestamp);
1710 tsf_low = le64_to_cpu(rx_end->timestamp) & 0x0ffffffff;
1711 tsf = le64_to_cpu(rx_end->timestamp);
1712
1713 /* signal statistics */
1714 rssi = rx_stats->rssi;
1715 agc = rx_stats->agc;
1716 sig_avg = le16_to_cpu(rx_stats->sig_avg);
1717 noise_diff = le16_to_cpu(rx_stats->noise_diff);
1718
1719 to_us = !compare_ether_addr(header->addr1, priv->mac_addr);
1720
1721 /* if data frame is to us and all is good,
1722 * (optionally) print summary for only 1 out of every 100 */
1723 if (to_us && (fc & ~IEEE80211_FCTL_PROTECTED) ==
1724 (IEEE80211_FCTL_FROMDS | IEEE80211_FTYPE_DATA)) {
1725 dataframe = 1;
1726 if (!group100)
1727 print_summary = 1; /* print each frame */
1728 else if (priv->framecnt_to_us < 100) {
1729 priv->framecnt_to_us++;
1730 print_summary = 0;
1731 } else {
1732 priv->framecnt_to_us = 0;
1733 print_summary = 1;
1734 hundred = 1;
1735 }
1736 } else {
1737 /* print summary for all other frames */
1738 print_summary = 1;
1739 }
1740
1741 if (print_summary) {
1742 char *title;
1743 u32 rate;
1744
1745 if (hundred)
1746 title = "100Frames";
1747 else if (fc & IEEE80211_FCTL_RETRY)
1748 title = "Retry";
1749 else if (ieee80211_is_assoc_response(fc))
1750 title = "AscRsp";
1751 else if (ieee80211_is_reassoc_response(fc))
1752 title = "RasRsp";
1753 else if (ieee80211_is_probe_response(fc)) {
1754 title = "PrbRsp";
1755 print_dump = 1; /* dump frame contents */
1756 } else if (ieee80211_is_beacon(fc)) {
1757 title = "Beacon";
1758 print_dump = 1; /* dump frame contents */
1759 } else if (ieee80211_is_atim(fc))
1760 title = "ATIM";
1761 else if (ieee80211_is_auth(fc))
1762 title = "Auth";
1763 else if (ieee80211_is_deauth(fc))
1764 title = "DeAuth";
1765 else if (ieee80211_is_disassoc(fc))
1766 title = "DisAssoc";
1767 else
1768 title = "Frame";
1769
1770 rate = iwl_rate_index_from_plcp(rate_sym);
1771 if (rate == -1)
1772 rate = 0;
1773 else
1774 rate = iwl_rates[rate].ieee / 2;
1775
1776 /* print frame summary.
1777 * MAC addresses show just the last byte (for brevity),
1778 * but you can hack it to show more, if you'd like to. */
1779 if (dataframe)
1780 IWL_DEBUG_RX("%s: mhd=0x%04x, dst=0x%02x, "
1781 "len=%u, rssi=%d, chnl=%d, rate=%u, \n",
1782 title, fc, header->addr1[5],
1783 length, rssi, channel, rate);
1784 else {
1785 /* src/dst addresses assume managed mode */
1786 IWL_DEBUG_RX("%s: 0x%04x, dst=0x%02x, "
1787 "src=0x%02x, rssi=%u, tim=%lu usec, "
1788 "phy=0x%02x, chnl=%d\n",
1789 title, fc, header->addr1[5],
1790 header->addr3[5], rssi,
1791 tsf_low - priv->scan_start_tsf,
1792 phy_flags, channel);
1793 }
1794 }
1795 if (print_dump)
1796 iwl_print_hex_dump(IWL_DL_RX, data, length);
1797}
1798#endif
1799
1800static void iwl_unset_hw_setting(struct iwl_priv *priv)
1801{
1802 if (priv->hw_setting.shared_virt)
1803 pci_free_consistent(priv->pci_dev,
1804 sizeof(struct iwl_shared),
1805 priv->hw_setting.shared_virt,
1806 priv->hw_setting.shared_phys);
1807}
1808
1809/**
1810 * iwl_supported_rate_to_ie - fill in the supported rate in IE field
1811 *
1812 * return : set the bit for each supported rate insert in ie
1813 */
1814static u16 iwl_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1815 u16 basic_rate, int max_count)
1816{
1817 u16 ret_rates = 0, bit;
1818 int i;
1819 u8 *rates;
1820
1821 rates = &(ie[1]);
1822
1823 for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1824 if (bit & supported_rate) {
1825 ret_rates |= bit;
1826 rates[*ie] = iwl_rates[i].ieee |
1827 ((bit & basic_rate) ? 0x80 : 0x00);
1828 *ie = *ie + 1;
1829 if (*ie >= max_count)
1830 break;
1831 }
1832 }
1833
1834 return ret_rates;
1835}
1836
1837#ifdef CONFIG_IWLWIFI_HT
1838void static iwl_set_ht_capab(struct ieee80211_hw *hw,
1839 struct ieee80211_ht_capability *ht_cap,
1840 u8 use_wide_chan);
1841#endif
1842
1843/**
1844 * iwl_fill_probe_req - fill in all required fields and IE for probe request
1845 */
1846static u16 iwl_fill_probe_req(struct iwl_priv *priv,
1847 struct ieee80211_mgmt *frame,
1848 int left, int is_direct)
1849{
1850 int len = 0;
1851 u8 *pos = NULL;
1852 u16 ret_rates;
1853
1854 /* Make sure there is enough space for the probe request,
1855 * two mandatory IEs and the data */
1856 left -= 24;
1857 if (left < 0)
1858 return 0;
1859 len += 24;
1860
1861 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1862 memcpy(frame->da, BROADCAST_ADDR, ETH_ALEN);
1863 memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1864 memcpy(frame->bssid, BROADCAST_ADDR, ETH_ALEN);
1865 frame->seq_ctrl = 0;
1866
1867 /* fill in our indirect SSID IE */
1868 /* ...next IE... */
1869
1870 left -= 2;
1871 if (left < 0)
1872 return 0;
1873 len += 2;
1874 pos = &(frame->u.probe_req.variable[0]);
1875 *pos++ = WLAN_EID_SSID;
1876 *pos++ = 0;
1877
1878 /* fill in our direct SSID IE... */
1879 if (is_direct) {
1880 /* ...next IE... */
1881 left -= 2 + priv->essid_len;
1882 if (left < 0)
1883 return 0;
1884 /* ... fill it in... */
1885 *pos++ = WLAN_EID_SSID;
1886 *pos++ = priv->essid_len;
1887 memcpy(pos, priv->essid, priv->essid_len);
1888 pos += priv->essid_len;
1889 len += 2 + priv->essid_len;
1890 }
1891
1892 /* fill in supported rate */
1893 /* ...next IE... */
1894 left -= 2;
1895 if (left < 0)
1896 return 0;
1897 /* ... fill it in... */
1898 *pos++ = WLAN_EID_SUPP_RATES;
1899 *pos = 0;
1900 ret_rates = priv->active_rate = priv->rates_mask;
1901 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1902
1903 iwl_supported_rate_to_ie(pos, priv->active_rate,
1904 priv->active_rate_basic, left);
1905 len += 2 + *pos;
1906 pos += (*pos) + 1;
1907 ret_rates = ~ret_rates & priv->active_rate;
1908
1909 if (ret_rates == 0)
1910 goto fill_end;
1911
1912 /* fill in supported extended rate */
1913 /* ...next IE... */
1914 left -= 2;
1915 if (left < 0)
1916 return 0;
1917 /* ... fill it in... */
1918 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1919 *pos = 0;
1920 iwl_supported_rate_to_ie(pos, ret_rates, priv->active_rate_basic, left);
1921 if (*pos > 0)
1922 len += 2 + *pos;
1923
1924#ifdef CONFIG_IWLWIFI_HT
1925 if (is_direct && priv->is_ht_enabled) {
1926 u8 use_wide_chan = 1;
1927
1928 if (priv->channel_width != IWL_CHANNEL_WIDTH_40MHZ)
1929 use_wide_chan = 0;
1930 pos += (*pos) + 1;
1931 *pos++ = WLAN_EID_HT_CAPABILITY;
1932 *pos++ = sizeof(struct ieee80211_ht_capability);
1933 iwl_set_ht_capab(NULL, (struct ieee80211_ht_capability *)pos,
1934 use_wide_chan);
1935 len += 2 + sizeof(struct ieee80211_ht_capability);
1936 }
1937#endif /*CONFIG_IWLWIFI_HT */
1938
1939 fill_end:
1940 return (u16)len;
1941}
1942
1943/*
1944 * QoS support
1945*/
1946#ifdef CONFIG_IWLWIFI_QOS
1947static int iwl_send_qos_params_command(struct iwl_priv *priv,
1948 struct iwl_qosparam_cmd *qos)
1949{
1950
1951 return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1952 sizeof(struct iwl_qosparam_cmd), qos);
1953}
1954
1955static void iwl_reset_qos(struct iwl_priv *priv)
1956{
1957 u16 cw_min = 15;
1958 u16 cw_max = 1023;
1959 u8 aifs = 2;
1960 u8 is_legacy = 0;
1961 unsigned long flags;
1962 int i;
1963
1964 spin_lock_irqsave(&priv->lock, flags);
1965 priv->qos_data.qos_active = 0;
1966
1967 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) {
1968 if (priv->qos_data.qos_enable)
1969 priv->qos_data.qos_active = 1;
1970 if (!(priv->active_rate & 0xfff0)) {
1971 cw_min = 31;
1972 is_legacy = 1;
1973 }
1974 } else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1975 if (priv->qos_data.qos_enable)
1976 priv->qos_data.qos_active = 1;
1977 } else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
1978 cw_min = 31;
1979 is_legacy = 1;
1980 }
1981
1982 if (priv->qos_data.qos_active)
1983 aifs = 3;
1984
1985 priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
1986 priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
1987 priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
1988 priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
1989 priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
1990
1991 if (priv->qos_data.qos_active) {
1992 i = 1;
1993 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
1994 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
1995 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
1996 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1997 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1998
1999 i = 2;
2000 priv->qos_data.def_qos_parm.ac[i].cw_min =
2001 cpu_to_le16((cw_min + 1) / 2 - 1);
2002 priv->qos_data.def_qos_parm.ac[i].cw_max =
2003 cpu_to_le16(cw_max);
2004 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
2005 if (is_legacy)
2006 priv->qos_data.def_qos_parm.ac[i].edca_txop =
2007 cpu_to_le16(6016);
2008 else
2009 priv->qos_data.def_qos_parm.ac[i].edca_txop =
2010 cpu_to_le16(3008);
2011 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2012
2013 i = 3;
2014 priv->qos_data.def_qos_parm.ac[i].cw_min =
2015 cpu_to_le16((cw_min + 1) / 4 - 1);
2016 priv->qos_data.def_qos_parm.ac[i].cw_max =
2017 cpu_to_le16((cw_max + 1) / 2 - 1);
2018 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
2019 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2020 if (is_legacy)
2021 priv->qos_data.def_qos_parm.ac[i].edca_txop =
2022 cpu_to_le16(3264);
2023 else
2024 priv->qos_data.def_qos_parm.ac[i].edca_txop =
2025 cpu_to_le16(1504);
2026 } else {
2027 for (i = 1; i < 4; i++) {
2028 priv->qos_data.def_qos_parm.ac[i].cw_min =
2029 cpu_to_le16(cw_min);
2030 priv->qos_data.def_qos_parm.ac[i].cw_max =
2031 cpu_to_le16(cw_max);
2032 priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
2033 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
2034 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2035 }
2036 }
2037 IWL_DEBUG_QOS("set QoS to default \n");
2038
2039 spin_unlock_irqrestore(&priv->lock, flags);
2040}
2041
2042static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
2043{
2044 unsigned long flags;
2045
2046 if (priv == NULL)
2047 return;
2048
2049 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2050 return;
2051
2052 if (!priv->qos_data.qos_enable)
2053 return;
2054
2055 spin_lock_irqsave(&priv->lock, flags);
2056 priv->qos_data.def_qos_parm.qos_flags = 0;
2057
2058 if (priv->qos_data.qos_cap.q_AP.queue_request &&
2059 !priv->qos_data.qos_cap.q_AP.txop_request)
2060 priv->qos_data.def_qos_parm.qos_flags |=
2061 QOS_PARAM_FLG_TXOP_TYPE_MSK;
2062
2063 if (priv->qos_data.qos_active)
2064 priv->qos_data.def_qos_parm.qos_flags |=
2065 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
2066
2067 spin_unlock_irqrestore(&priv->lock, flags);
2068
2069 if (force || iwl_is_associated(priv)) {
2070 IWL_DEBUG_QOS("send QoS cmd with Qos active %d \n",
2071 priv->qos_data.qos_active);
2072
2073 iwl_send_qos_params_command(priv,
2074 &(priv->qos_data.def_qos_parm));
2075 }
2076}
2077
2078#endif /* CONFIG_IWLWIFI_QOS */
2079/*
2080 * Power management (not Tx power!) functions
2081 */
2082#define MSEC_TO_USEC 1024
2083
2084#define NOSLP __constant_cpu_to_le16(0), 0, 0
2085#define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
2086#define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
2087#define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
2088 __constant_cpu_to_le32(X1), \
2089 __constant_cpu_to_le32(X2), \
2090 __constant_cpu_to_le32(X3), \
2091 __constant_cpu_to_le32(X4)}
2092
2093
2094/* default power management (not Tx power) table values */
2095/* for tim 0-10 */
2096static struct iwl_power_vec_entry range_0[IWL_POWER_AC] = {
2097 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2098 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
2099 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
2100 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
2101 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
2102 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
2103};
2104
2105/* for tim > 10 */
2106static struct iwl_power_vec_entry range_1[IWL_POWER_AC] = {
2107 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2108 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
2109 SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
2110 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
2111 SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
2112 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
2113 SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
2114 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
2115 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
2116 SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
2117};
2118
2119int iwl_power_init_handle(struct iwl_priv *priv)
2120{
2121 int rc = 0, i;
2122 struct iwl_power_mgr *pow_data;
2123 int size = sizeof(struct iwl_power_vec_entry) * IWL_POWER_AC;
2124 u16 pci_pm;
2125
2126 IWL_DEBUG_POWER("Initialize power \n");
2127
2128 pow_data = &(priv->power_data);
2129
2130 memset(pow_data, 0, sizeof(*pow_data));
2131
2132 pow_data->active_index = IWL_POWER_RANGE_0;
2133 pow_data->dtim_val = 0xffff;
2134
2135 memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
2136 memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
2137
2138 rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
2139 if (rc != 0)
2140 return 0;
2141 else {
2142 struct iwl_powertable_cmd *cmd;
2143
2144 IWL_DEBUG_POWER("adjust power command flags\n");
2145
2146 for (i = 0; i < IWL_POWER_AC; i++) {
2147 cmd = &pow_data->pwr_range_0[i].cmd;
2148
2149 if (pci_pm & 0x1)
2150 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
2151 else
2152 cmd->flags |= IWL_POWER_PCI_PM_MSK;
2153 }
2154 }
2155 return rc;
2156}
2157
2158static int iwl_update_power_cmd(struct iwl_priv *priv,
2159 struct iwl_powertable_cmd *cmd, u32 mode)
2160{
2161 int rc = 0, i;
2162 u8 skip;
2163 u32 max_sleep = 0;
2164 struct iwl_power_vec_entry *range;
2165 u8 period = 0;
2166 struct iwl_power_mgr *pow_data;
2167
2168 if (mode > IWL_POWER_INDEX_5) {
2169 IWL_DEBUG_POWER("Error invalid power mode \n");
2170 return -1;
2171 }
2172 pow_data = &(priv->power_data);
2173
2174 if (pow_data->active_index == IWL_POWER_RANGE_0)
2175 range = &pow_data->pwr_range_0[0];
2176 else
2177 range = &pow_data->pwr_range_1[1];
2178
2179 memcpy(cmd, &range[mode].cmd, sizeof(struct iwl_powertable_cmd));
2180
2181#ifdef IWL_MAC80211_DISABLE
2182 if (priv->assoc_network != NULL) {
2183 unsigned long flags;
2184
2185 period = priv->assoc_network->tim.tim_period;
2186 }
2187#endif /*IWL_MAC80211_DISABLE */
2188 skip = range[mode].no_dtim;
2189
2190 if (period == 0) {
2191 period = 1;
2192 skip = 0;
2193 }
2194
2195 if (skip == 0) {
2196 max_sleep = period;
2197 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
2198 } else {
2199 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
2200 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
2201 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
2202 }
2203
2204 for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
2205 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
2206 cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
2207 }
2208
2209 IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
2210 IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
2211 IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
2212 IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
2213 le32_to_cpu(cmd->sleep_interval[0]),
2214 le32_to_cpu(cmd->sleep_interval[1]),
2215 le32_to_cpu(cmd->sleep_interval[2]),
2216 le32_to_cpu(cmd->sleep_interval[3]),
2217 le32_to_cpu(cmd->sleep_interval[4]));
2218
2219 return rc;
2220}
2221
2222static int iwl_send_power_mode(struct iwl_priv *priv, u32 mode)
2223{
2224 u32 final_mode = mode;
2225 int rc;
2226 struct iwl_powertable_cmd cmd;
2227
2228 /* If on battery, set to 3,
2229 * if plugged into AC power, set to CAM ("continuosly aware mode"),
2230 * else user level */
2231 switch (mode) {
2232 case IWL_POWER_BATTERY:
2233 final_mode = IWL_POWER_INDEX_3;
2234 break;
2235 case IWL_POWER_AC:
2236 final_mode = IWL_POWER_MODE_CAM;
2237 break;
2238 default:
2239 final_mode = mode;
2240 break;
2241 }
2242
2243 cmd.keep_alive_beacons = 0;
2244
2245 iwl_update_power_cmd(priv, &cmd, final_mode);
2246
2247 rc = iwl_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
2248
2249 if (final_mode == IWL_POWER_MODE_CAM)
2250 clear_bit(STATUS_POWER_PMI, &priv->status);
2251 else
2252 set_bit(STATUS_POWER_PMI, &priv->status);
2253
2254 return rc;
2255}
2256
2257int iwl_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
2258{
2259 /* Filter incoming packets to determine if they are targeted toward
2260 * this network, discarding packets coming from ourselves */
2261 switch (priv->iw_mode) {
2262 case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source | BSSID */
2263 /* packets from our adapter are dropped (echo) */
2264 if (!compare_ether_addr(header->addr2, priv->mac_addr))
2265 return 0;
2266 /* {broad,multi}cast packets to our IBSS go through */
2267 if (is_multicast_ether_addr(header->addr1))
2268 return !compare_ether_addr(header->addr3, priv->bssid);
2269 /* packets to our adapter go through */
2270 return !compare_ether_addr(header->addr1, priv->mac_addr);
2271 case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
2272 /* packets from our adapter are dropped (echo) */
2273 if (!compare_ether_addr(header->addr3, priv->mac_addr))
2274 return 0;
2275 /* {broad,multi}cast packets to our BSS go through */
2276 if (is_multicast_ether_addr(header->addr1))
2277 return !compare_ether_addr(header->addr2, priv->bssid);
2278 /* packets to our adapter go through */
2279 return !compare_ether_addr(header->addr1, priv->mac_addr);
2280 }
2281
2282 return 1;
2283}
2284
2285#define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2286
2287const char *iwl_get_tx_fail_reason(u32 status)
2288{
2289 switch (status & TX_STATUS_MSK) {
2290 case TX_STATUS_SUCCESS:
2291 return "SUCCESS";
2292 TX_STATUS_ENTRY(SHORT_LIMIT);
2293 TX_STATUS_ENTRY(LONG_LIMIT);
2294 TX_STATUS_ENTRY(FIFO_UNDERRUN);
2295 TX_STATUS_ENTRY(MGMNT_ABORT);
2296 TX_STATUS_ENTRY(NEXT_FRAG);
2297 TX_STATUS_ENTRY(LIFE_EXPIRE);
2298 TX_STATUS_ENTRY(DEST_PS);
2299 TX_STATUS_ENTRY(ABORTED);
2300 TX_STATUS_ENTRY(BT_RETRY);
2301 TX_STATUS_ENTRY(STA_INVALID);
2302 TX_STATUS_ENTRY(FRAG_DROPPED);
2303 TX_STATUS_ENTRY(TID_DISABLE);
2304 TX_STATUS_ENTRY(FRAME_FLUSHED);
2305 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
2306 TX_STATUS_ENTRY(TX_LOCKED);
2307 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
2308 }
2309
2310 return "UNKNOWN";
2311}
2312
2313/**
2314 * iwl_scan_cancel - Cancel any currently executing HW scan
2315 *
2316 * NOTE: priv->mutex is not required before calling this function
2317 */
2318static int iwl_scan_cancel(struct iwl_priv *priv)
2319{
2320 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
2321 clear_bit(STATUS_SCANNING, &priv->status);
2322 return 0;
2323 }
2324
2325 if (test_bit(STATUS_SCANNING, &priv->status)) {
2326 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2327 IWL_DEBUG_SCAN("Queuing scan abort.\n");
2328 set_bit(STATUS_SCAN_ABORTING, &priv->status);
2329 queue_work(priv->workqueue, &priv->abort_scan);
2330
2331 } else
2332 IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2333
2334 return test_bit(STATUS_SCANNING, &priv->status);
2335 }
2336
2337 return 0;
2338}
2339
2340/**
2341 * iwl_scan_cancel_timeout - Cancel any currently executing HW scan
2342 * @ms: amount of time to wait (in milliseconds) for scan to abort
2343 *
2344 * NOTE: priv->mutex must be held before calling this function
2345 */
2346static int iwl_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
2347{
2348 unsigned long now = jiffies;
2349 int ret;
2350
2351 ret = iwl_scan_cancel(priv);
2352 if (ret && ms) {
2353 mutex_unlock(&priv->mutex);
2354 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
2355 test_bit(STATUS_SCANNING, &priv->status))
2356 msleep(1);
2357 mutex_lock(&priv->mutex);
2358
2359 return test_bit(STATUS_SCANNING, &priv->status);
2360 }
2361
2362 return ret;
2363}
2364
2365static void iwl_sequence_reset(struct iwl_priv *priv)
2366{
2367 /* Reset ieee stats */
2368
2369 /* We don't reset the net_device_stats (ieee->stats) on
2370 * re-association */
2371
2372 priv->last_seq_num = -1;
2373 priv->last_frag_num = -1;
2374 priv->last_packet_time = 0;
2375
2376 iwl_scan_cancel(priv);
2377}
2378
2379#define MAX_UCODE_BEACON_INTERVAL 4096
2380#define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
2381
2382static __le16 iwl_adjust_beacon_interval(u16 beacon_val)
2383{
2384 u16 new_val = 0;
2385 u16 beacon_factor = 0;
2386
2387 beacon_factor =
2388 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
2389 / MAX_UCODE_BEACON_INTERVAL;
2390 new_val = beacon_val / beacon_factor;
2391
2392 return cpu_to_le16(new_val);
2393}
2394
2395static void iwl_setup_rxon_timing(struct iwl_priv *priv)
2396{
2397 u64 interval_tm_unit;
2398 u64 tsf, result;
2399 unsigned long flags;
2400 struct ieee80211_conf *conf = NULL;
2401 u16 beacon_int = 0;
2402
2403 conf = ieee80211_get_hw_conf(priv->hw);
2404
2405 spin_lock_irqsave(&priv->lock, flags);
2406 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
2407 priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);
2408
2409 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
2410
2411 tsf = priv->timestamp1;
2412 tsf = ((tsf << 32) | priv->timestamp0);
2413
2414 beacon_int = priv->beacon_int;
2415 spin_unlock_irqrestore(&priv->lock, flags);
2416
2417 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
2418 if (beacon_int == 0) {
2419 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
2420 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
2421 } else {
2422 priv->rxon_timing.beacon_interval =
2423 cpu_to_le16(beacon_int);
2424 priv->rxon_timing.beacon_interval =
2425 iwl_adjust_beacon_interval(
2426 le16_to_cpu(priv->rxon_timing.beacon_interval));
2427 }
2428
2429 priv->rxon_timing.atim_window = 0;
2430 } else {
2431 priv->rxon_timing.beacon_interval =
2432 iwl_adjust_beacon_interval(conf->beacon_int);
2433 /* TODO: we need to get atim_window from upper stack
2434 * for now we set to 0 */
2435 priv->rxon_timing.atim_window = 0;
2436 }
2437
2438 interval_tm_unit =
2439 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2440 result = do_div(tsf, interval_tm_unit);
2441 priv->rxon_timing.beacon_init_val =
2442 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2443
2444 IWL_DEBUG_ASSOC
2445 ("beacon interval %d beacon timer %d beacon tim %d\n",
2446 le16_to_cpu(priv->rxon_timing.beacon_interval),
2447 le32_to_cpu(priv->rxon_timing.beacon_init_val),
2448 le16_to_cpu(priv->rxon_timing.atim_window));
2449}
2450
2451static int iwl_scan_initiate(struct iwl_priv *priv)
2452{
2453 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2454 IWL_ERROR("APs don't scan.\n");
2455 return 0;
2456 }
2457
2458 if (!iwl_is_ready_rf(priv)) {
2459 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2460 return -EIO;
2461 }
2462
2463 if (test_bit(STATUS_SCANNING, &priv->status)) {
2464 IWL_DEBUG_SCAN("Scan already in progress.\n");
2465 return -EAGAIN;
2466 }
2467
2468 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2469 IWL_DEBUG_SCAN("Scan request while abort pending. "
2470 "Queuing.\n");
2471 return -EAGAIN;
2472 }
2473
2474 IWL_DEBUG_INFO("Starting scan...\n");
2475 priv->scan_bands = 2;
2476 set_bit(STATUS_SCANNING, &priv->status);
2477 priv->scan_start = jiffies;
2478 priv->scan_pass_start = priv->scan_start;
2479
2480 queue_work(priv->workqueue, &priv->request_scan);
2481
2482 return 0;
2483}
2484
2485static int iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
2486{
2487 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
2488
2489 if (hw_decrypt)
2490 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2491 else
2492 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2493
2494 return 0;
2495}
2496
2497static void iwl_set_flags_for_phymode(struct iwl_priv *priv, u8 phymode)
2498{
2499 if (phymode == MODE_IEEE80211A) {
2500 priv->staging_rxon.flags &=
2501 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2502 | RXON_FLG_CCK_MSK);
2503 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2504 } else {
2505 /* Copied from iwl_bg_post_associate() */
2506 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2507 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2508 else
2509 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2510
2511 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2512 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2513
2514 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2515 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2516 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2517 }
2518}
2519
2520/*
2521 * initilize rxon structure with default values fromm eeprom
2522 */
2523static void iwl_connection_init_rx_config(struct iwl_priv *priv)
2524{
2525 const struct iwl_channel_info *ch_info;
2526
2527 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2528
2529 switch (priv->iw_mode) {
2530 case IEEE80211_IF_TYPE_AP:
2531 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2532 break;
2533
2534 case IEEE80211_IF_TYPE_STA:
2535 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2536 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2537 break;
2538
2539 case IEEE80211_IF_TYPE_IBSS:
2540 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2541 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2542 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2543 RXON_FILTER_ACCEPT_GRP_MSK;
2544 break;
2545
2546 case IEEE80211_IF_TYPE_MNTR:
2547 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2548 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2549 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2550 break;
2551 }
2552
2553#if 0
2554 /* TODO: Figure out when short_preamble would be set and cache from
2555 * that */
2556 if (!hw_to_local(priv->hw)->short_preamble)
2557 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2558 else
2559 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2560#endif
2561
2562 ch_info = iwl_get_channel_info(priv, priv->phymode,
2563 le16_to_cpu(priv->staging_rxon.channel));
2564
2565 if (!ch_info)
2566 ch_info = &priv->channel_info[0];
2567
2568 /*
2569 * in some case A channels are all non IBSS
2570 * in this case force B/G channel
2571 */
2572 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
2573 !(is_channel_ibss(ch_info)))
2574 ch_info = &priv->channel_info[0];
2575
2576 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2577 if (is_channel_a_band(ch_info))
2578 priv->phymode = MODE_IEEE80211A;
2579 else
2580 priv->phymode = MODE_IEEE80211G;
2581
2582 iwl_set_flags_for_phymode(priv, priv->phymode);
2583
2584 priv->staging_rxon.ofdm_basic_rates =
2585 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2586 priv->staging_rxon.cck_basic_rates =
2587 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2588
2589 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
2590 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
2591 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2592 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
2593 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
2594 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
2595 iwl4965_set_rxon_chain(priv);
2596}
2597
2598static int iwl_set_mode(struct iwl_priv *priv, int mode)
2599{
2600 if (!iwl_is_ready_rf(priv))
2601 return -EAGAIN;
2602
2603 if (mode == IEEE80211_IF_TYPE_IBSS) {
2604 const struct iwl_channel_info *ch_info;
2605
2606 ch_info = iwl_get_channel_info(priv,
2607 priv->phymode,
2608 le16_to_cpu(priv->staging_rxon.channel));
2609
2610 if (!ch_info || !is_channel_ibss(ch_info)) {
2611 IWL_ERROR("channel %d not IBSS channel\n",
2612 le16_to_cpu(priv->staging_rxon.channel));
2613 return -EINVAL;
2614 }
2615 }
2616
2617 cancel_delayed_work(&priv->scan_check);
2618 if (iwl_scan_cancel_timeout(priv, 100)) {
2619 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2620 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2621 return -EAGAIN;
2622 }
2623
2624 priv->iw_mode = mode;
2625
2626 iwl_connection_init_rx_config(priv);
2627 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2628
2629 iwl_clear_stations_table(priv);
2630
2631 iwl_commit_rxon(priv);
2632
2633 return 0;
2634}
2635
2636static void iwl_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
2637 struct ieee80211_tx_control *ctl,
2638 struct iwl_cmd *cmd,
2639 struct sk_buff *skb_frag,
2640 int last_frag)
2641{
2642 struct iwl_hw_key *keyinfo = &priv->stations[ctl->key_idx].keyinfo;
2643
2644 switch (keyinfo->alg) {
2645 case ALG_CCMP:
2646 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2647 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2648 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2649 break;
2650
2651 case ALG_TKIP:
2652#if 0
2653 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2654
2655 if (last_frag)
2656 memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2657 8);
2658 else
2659 memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2660#endif
2661 break;
2662
2663 case ALG_WEP:
2664 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2665 (ctl->key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2666
2667 if (keyinfo->keylen == 13)
2668 cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2669
2670 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2671
2672 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2673 "with key %d\n", ctl->key_idx);
2674 break;
2675
2676 case ALG_NONE:
2677 IWL_DEBUG_TX("Tx packet in the clear (encrypt requested).\n");
2678 break;
2679
2680 default:
2681 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2682 break;
2683 }
2684}
2685
2686/*
2687 * handle build REPLY_TX command notification.
2688 */
2689static void iwl_build_tx_cmd_basic(struct iwl_priv *priv,
2690 struct iwl_cmd *cmd,
2691 struct ieee80211_tx_control *ctrl,
2692 struct ieee80211_hdr *hdr,
2693 int is_unicast, u8 std_id)
2694{
2695 __le16 *qc;
2696 u16 fc = le16_to_cpu(hdr->frame_control);
2697 __le32 tx_flags = cmd->cmd.tx.tx_flags;
2698
2699 cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2700 if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
2701 tx_flags |= TX_CMD_FLG_ACK_MSK;
2702 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
2703 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2704 if (ieee80211_is_probe_response(fc) &&
2705 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2706 tx_flags |= TX_CMD_FLG_TSF_MSK;
2707 } else {
2708 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2709 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2710 }
2711
2712 cmd->cmd.tx.sta_id = std_id;
2713 if (ieee80211_get_morefrag(hdr))
2714 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2715
2716 qc = ieee80211_get_qos_ctrl(hdr);
2717 if (qc) {
2718 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
2719 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2720 } else
2721 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2722
2723 if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
2724 tx_flags |= TX_CMD_FLG_RTS_MSK;
2725 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2726 } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
2727 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2728 tx_flags |= TX_CMD_FLG_CTS_MSK;
2729 }
2730
2731 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2732 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2733
2734 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2735 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
2736 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
2737 (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
2738 cmd->cmd.tx.timeout.pm_frame_timeout =
2739 cpu_to_le16(3);
2740 else
2741 cmd->cmd.tx.timeout.pm_frame_timeout =
2742 cpu_to_le16(2);
2743 } else
2744 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2745
2746 cmd->cmd.tx.driver_txop = 0;
2747 cmd->cmd.tx.tx_flags = tx_flags;
2748 cmd->cmd.tx.next_frame_len = 0;
2749}
2750
2751static int iwl_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
2752{
2753 int sta_id;
2754 u16 fc = le16_to_cpu(hdr->frame_control);
0795af57 2755 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 2756
2757 /* If this frame is broadcast or not data then use the broadcast
2758 * station id */
2759 if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2760 is_multicast_ether_addr(hdr->addr1))
2761 return priv->hw_setting.bcast_sta_id;
2762
2763 switch (priv->iw_mode) {
2764
2765 /* If this frame is part of a BSS network (we're a station), then
2766 * we use the AP's station id */
2767 case IEEE80211_IF_TYPE_STA:
2768 return IWL_AP_ID;
2769
2770 /* If we are an AP, then find the station, or use BCAST */
2771 case IEEE80211_IF_TYPE_AP:
2772 sta_id = iwl_hw_find_station(priv, hdr->addr1);
2773 if (sta_id != IWL_INVALID_STATION)
2774 return sta_id;
2775 return priv->hw_setting.bcast_sta_id;
2776
2777 /* If this frame is part of a IBSS network, then we use the
2778 * target specific station id */
2779 case IEEE80211_IF_TYPE_IBSS:
2780 sta_id = iwl_hw_find_station(priv, hdr->addr1);
2781 if (sta_id != IWL_INVALID_STATION)
2782 return sta_id;
2783
2784 sta_id = iwl_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
2785
2786 if (sta_id != IWL_INVALID_STATION)
2787 return sta_id;
2788
0795af57 2789 IWL_DEBUG_DROP("Station %s not in station map. "
b481de9c 2790 "Defaulting to broadcast...\n",
0795af57 2791 print_mac(mac, hdr->addr1));
b481de9c
ZY		 2792 iwl_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2793 return priv->hw_setting.bcast_sta_id;
2794
2795 default:
2796 IWL_WARNING("Unkown mode of operation: %d", priv->iw_mode);
2797 return priv->hw_setting.bcast_sta_id;
2798 }
2799}
2800
2801/*
2802 * start REPLY_TX command process
2803 */
2804static int iwl_tx_skb(struct iwl_priv *priv,
2805 struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2806{
2807 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2808 struct iwl_tfd_frame *tfd;
2809 u32 *control_flags;
2810 int txq_id = ctl->queue;
2811 struct iwl_tx_queue *txq = NULL;
2812 struct iwl_queue *q = NULL;
2813 dma_addr_t phys_addr;
2814 dma_addr_t txcmd_phys;
2815 struct iwl_cmd *out_cmd = NULL;
2816 u16 len, idx, len_org;
2817 u8 id, hdr_len, unicast;
2818 u8 sta_id;
2819 u16 seq_number = 0;
2820 u16 fc;
2821 __le16 *qc;
2822 u8 wait_write_ptr = 0;
2823 unsigned long flags;
2824 int rc;
2825
2826 spin_lock_irqsave(&priv->lock, flags);
2827 if (iwl_is_rfkill(priv)) {
2828 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2829 goto drop_unlock;
2830 }
2831
2832 if (!priv->interface_id) {
2833 IWL_DEBUG_DROP("Dropping - !priv->interface_id\n");
2834 goto drop_unlock;
2835 }
2836
2837 if ((ctl->tx_rate & 0xFF) == IWL_INVALID_RATE) {
2838 IWL_ERROR("ERROR: No TX rate available.\n");
2839 goto drop_unlock;
2840 }
2841
2842 unicast = !is_multicast_ether_addr(hdr->addr1);
2843 id = 0;
2844
2845 fc = le16_to_cpu(hdr->frame_control);
2846
2847#ifdef CONFIG_IWLWIFI_DEBUG
2848 if (ieee80211_is_auth(fc))
2849 IWL_DEBUG_TX("Sending AUTH frame\n");
2850 else if (ieee80211_is_assoc_request(fc))
2851 IWL_DEBUG_TX("Sending ASSOC frame\n");
2852 else if (ieee80211_is_reassoc_request(fc))
2853 IWL_DEBUG_TX("Sending REASSOC frame\n");
2854#endif
2855
2856 if (!iwl_is_associated(priv) &&
2857 ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)) {
2858 IWL_DEBUG_DROP("Dropping - !iwl_is_associated\n");
2859 goto drop_unlock;
2860 }
2861
2862 spin_unlock_irqrestore(&priv->lock, flags);
2863
2864 hdr_len = ieee80211_get_hdrlen(fc);
2865 sta_id = iwl_get_sta_id(priv, hdr);
2866 if (sta_id == IWL_INVALID_STATION) {
0795af57
JP		 2867 DECLARE_MAC_BUF(mac);
2868
2869 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2870 print_mac(mac, hdr->addr1));
b481de9c
ZY		 2871 goto drop;
2872 }
2873
2874 IWL_DEBUG_RATE("station Id %d\n", sta_id);
2875
2876 qc = ieee80211_get_qos_ctrl(hdr);
2877 if (qc) {
2878 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2879 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2880 IEEE80211_SCTL_SEQ;
2881 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2882 (hdr->seq_ctrl &
2883 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2884 seq_number += 0x10;
2885#ifdef CONFIG_IWLWIFI_HT
2886#ifdef CONFIG_IWLWIFI_HT_AGG
2887 /* aggregation is on for this <sta,tid> */
2888 if (ctl->flags & IEEE80211_TXCTL_HT_MPDU_AGG)
2889 txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
2890#endif /* CONFIG_IWLWIFI_HT_AGG */
2891#endif /* CONFIG_IWLWIFI_HT */
2892 }
2893 txq = &priv->txq[txq_id];
2894 q = &txq->q;
2895
2896 spin_lock_irqsave(&priv->lock, flags);
2897
2898 tfd = &txq->bd[q->first_empty];
2899 memset(tfd, 0, sizeof(*tfd));
2900 control_flags = (u32 *) tfd;
2901 idx = get_cmd_index(q, q->first_empty, 0);
2902
2903 memset(&(txq->txb[q->first_empty]), 0, sizeof(struct iwl_tx_info));
2904 txq->txb[q->first_empty].skb[0] = skb;
2905 memcpy(&(txq->txb[q->first_empty].status.control),
2906 ctl, sizeof(struct ieee80211_tx_control));
2907 out_cmd = &txq->cmd[idx];
2908 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2909 memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2910 out_cmd->hdr.cmd = REPLY_TX;
2911 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2912 INDEX_TO_SEQ(q->first_empty)));
2913 /* copy frags header */
2914 memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2915
2916 /* hdr = (struct ieee80211_hdr *)out_cmd->cmd.tx.hdr; */
2917 len = priv->hw_setting.tx_cmd_len +
2918 sizeof(struct iwl_cmd_header) + hdr_len;
2919
2920 len_org = len;
2921 len = (len + 3) & ~3;
2922
2923 if (len_org != len)
2924 len_org = 1;
2925 else
2926 len_org = 0;
2927
2928 txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl_cmd) * idx +
2929 offsetof(struct iwl_cmd, hdr);
2930
2931 iwl_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2932
2933 if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
2934 iwl_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, 0);
2935
2936 /* 802.11 null functions have no payload... */
2937 len = skb->len - hdr_len;
2938 if (len) {
2939 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2940 len, PCI_DMA_TODEVICE);
2941 iwl_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2942 }
2943
2944 if (len_org)
2945 out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
2946
2947 len = (u16)skb->len;
2948 out_cmd->cmd.tx.len = cpu_to_le16(len);
2949
2950 /* TODO need this for burst mode later on */
2951 iwl_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
2952
2953 /* set is_hcca to 0; it probably will never be implemented */
2954 iwl_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
2955
2956 iwl4965_tx_cmd(priv, out_cmd, sta_id, txcmd_phys,
2957 hdr, hdr_len, ctl, NULL);
2958
2959 if (!ieee80211_get_morefrag(hdr)) {
2960 txq->need_update = 1;
2961 if (qc) {
2962 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2963 priv->stations[sta_id].tid[tid].seq_number = seq_number;
2964 }
2965 } else {
2966 wait_write_ptr = 1;
2967 txq->need_update = 0;
2968 }
2969
2970 iwl_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
2971 sizeof(out_cmd->cmd.tx));
2972
2973 iwl_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2974 ieee80211_get_hdrlen(fc));
2975
2976 iwl4965_tx_queue_update_wr_ptr(priv, txq, len);
2977
2978 q->first_empty = iwl_queue_inc_wrap(q->first_empty, q->n_bd);
2979 rc = iwl_tx_queue_update_write_ptr(priv, txq);
2980 spin_unlock_irqrestore(&priv->lock, flags);
2981
2982 if (rc)
2983 return rc;
2984
2985 if ((iwl_queue_space(q) < q->high_mark)
2986 && priv->mac80211_registered) {
2987 if (wait_write_ptr) {
2988 spin_lock_irqsave(&priv->lock, flags);
2989 txq->need_update = 1;
2990 iwl_tx_queue_update_write_ptr(priv, txq);
2991 spin_unlock_irqrestore(&priv->lock, flags);
2992 }
2993
2994 ieee80211_stop_queue(priv->hw, ctl->queue);
2995 }
2996
2997 return 0;
2998
2999drop_unlock:
3000 spin_unlock_irqrestore(&priv->lock, flags);
3001drop:
3002 return -1;
3003}
3004
3005static void iwl_set_rate(struct iwl_priv *priv)
3006{
3007 const struct ieee80211_hw_mode *hw = NULL;
3008 struct ieee80211_rate *rate;
3009 int i;
3010
3011 hw = iwl_get_hw_mode(priv, priv->phymode);
3012
3013 priv->active_rate = 0;
3014 priv->active_rate_basic = 0;
3015
3016 IWL_DEBUG_RATE("Setting rates for 802.11%c\n",
3017 hw->mode == MODE_IEEE80211A ?
3018 'a' : ((hw->mode == MODE_IEEE80211B) ? 'b' : 'g'));
3019
3020 for (i = 0; i < hw->num_rates; i++) {
3021 rate = &(hw->rates[i]);
3022 if ((rate->val < IWL_RATE_COUNT) &&
3023 (rate->flags & IEEE80211_RATE_SUPPORTED)) {
3024 IWL_DEBUG_RATE("Adding rate index %d (plcp %d)%s\n",
3025 rate->val, iwl_rates[rate->val].plcp,
3026 (rate->flags & IEEE80211_RATE_BASIC) ?
3027 "*" : "");
3028 priv->active_rate |= (1 << rate->val);
3029 if (rate->flags & IEEE80211_RATE_BASIC)
3030 priv->active_rate_basic |= (1 << rate->val);
3031 } else
3032 IWL_DEBUG_RATE("Not adding rate %d (plcp %d)\n",
3033 rate->val, iwl_rates[rate->val].plcp);
3034 }
3035
3036 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
3037 priv->active_rate, priv->active_rate_basic);
3038
3039 /*
3040 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
3041 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
3042 * OFDM
3043 */
3044 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
3045 priv->staging_rxon.cck_basic_rates =
3046 ((priv->active_rate_basic &
3047 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
3048 else
3049 priv->staging_rxon.cck_basic_rates =
3050 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
3051
3052 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
3053 priv->staging_rxon.ofdm_basic_rates =
3054 ((priv->active_rate_basic &
3055 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
3056 IWL_FIRST_OFDM_RATE) & 0xFF;
3057 else
3058 priv->staging_rxon.ofdm_basic_rates =
3059 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
3060}
3061
3062static void iwl_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
3063{
3064 unsigned long flags;
3065
3066 if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
3067 return;
3068
3069 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
3070 disable_radio ? "OFF" : "ON");
3071
3072 if (disable_radio) {
3073 iwl_scan_cancel(priv);
3074 /* FIXME: This is a workaround for AP */
3075 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3076 spin_lock_irqsave(&priv->lock, flags);
3077 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
3078 CSR_UCODE_SW_BIT_RFKILL);
3079 spin_unlock_irqrestore(&priv->lock, flags);
3080 iwl_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
3081 set_bit(STATUS_RF_KILL_SW, &priv->status);
3082 }
3083 return;
3084 }
3085
3086 spin_lock_irqsave(&priv->lock, flags);
3087 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3088
3089 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3090 spin_unlock_irqrestore(&priv->lock, flags);
3091
3092 /* wake up ucode */
3093 msleep(10);
3094
3095 spin_lock_irqsave(&priv->lock, flags);
3096 iwl_read32(priv, CSR_UCODE_DRV_GP1);
3097 if (!iwl_grab_restricted_access(priv))
3098 iwl_release_restricted_access(priv);
3099 spin_unlock_irqrestore(&priv->lock, flags);
3100
3101 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
3102 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3103 "disabled by HW switch\n");
3104 return;
3105 }
3106
3107 queue_work(priv->workqueue, &priv->restart);
3108 return;
3109}
3110
3111void iwl_set_decrypted_flag(struct iwl_priv *priv, struct sk_buff *skb,
3112 u32 decrypt_res, struct ieee80211_rx_status *stats)
3113{
3114 u16 fc =
3115 le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
3116
3117 if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
3118 return;
3119
3120 if (!(fc & IEEE80211_FCTL_PROTECTED))
3121 return;
3122
3123 IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
3124 switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
3125 case RX_RES_STATUS_SEC_TYPE_TKIP:
3126 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3127 RX_RES_STATUS_BAD_ICV_MIC)
3128 stats->flag |= RX_FLAG_MMIC_ERROR;
3129 case RX_RES_STATUS_SEC_TYPE_WEP:
3130 case RX_RES_STATUS_SEC_TYPE_CCMP:
3131 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3132 RX_RES_STATUS_DECRYPT_OK) {
3133 IWL_DEBUG_RX("hw decrypt successfully!!!\n");
3134 stats->flag |= RX_FLAG_DECRYPTED;
3135 }
3136 break;
3137
3138 default:
3139 break;
3140 }
3141}
3142
3143void iwl_handle_data_packet_monitor(struct iwl_priv *priv,
3144 struct iwl_rx_mem_buffer *rxb,
3145 void *data, short len,
3146 struct ieee80211_rx_status *stats,
3147 u16 phy_flags)
3148{
3149 struct iwl_rt_rx_hdr *iwl_rt;
3150
3151 /* First cache any information we need before we overwrite
3152 * the information provided in the skb from the hardware */
3153 s8 signal = stats->ssi;
3154 s8 noise = 0;
3155 int rate = stats->rate;
3156 u64 tsf = stats->mactime;
3157 __le16 phy_flags_hw = cpu_to_le16(phy_flags);
3158
3159 /* We received data from the HW, so stop the watchdog */
3160 if (len > IWL_RX_BUF_SIZE - sizeof(*iwl_rt)) {
3161 IWL_DEBUG_DROP("Dropping too large packet in monitor\n");
3162 return;
3163 }
3164
3165 /* copy the frame data to write after where the radiotap header goes */
3166 iwl_rt = (void *)rxb->skb->data;
3167 memmove(iwl_rt->payload, data, len);
3168
3169 iwl_rt->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION;
3170 iwl_rt->rt_hdr.it_pad = 0; /* always good to zero */
3171
3172 /* total header + data */
3173 iwl_rt->rt_hdr.it_len = cpu_to_le16(sizeof(*iwl_rt));
3174
3175 /* Set the size of the skb to the size of the frame */
3176 skb_put(rxb->skb, sizeof(*iwl_rt) + len);
3177
3178 /* Big bitfield of all the fields we provide in radiotap */
3179 iwl_rt->rt_hdr.it_present =
3180 cpu_to_le32((1 << IEEE80211_RADIOTAP_TSFT) |
3181 (1 << IEEE80211_RADIOTAP_FLAGS) |
3182 (1 << IEEE80211_RADIOTAP_RATE) |
3183 (1 << IEEE80211_RADIOTAP_CHANNEL) |
3184 (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL) |
3185 (1 << IEEE80211_RADIOTAP_DBM_ANTNOISE) |
3186 (1 << IEEE80211_RADIOTAP_ANTENNA));
3187
3188 /* Zero the flags, we'll add to them as we go */
3189 iwl_rt->rt_flags = 0;
3190
3191 iwl_rt->rt_tsf = cpu_to_le64(tsf);
3192
3193 /* Convert to dBm */
3194 iwl_rt->rt_dbmsignal = signal;
3195 iwl_rt->rt_dbmnoise = noise;
3196
3197 /* Convert the channel frequency and set the flags */
3198 iwl_rt->rt_channelMHz = cpu_to_le16(stats->freq);
3199 if (!(phy_flags_hw & RX_RES_PHY_FLAGS_BAND_24_MSK))
3200 iwl_rt->rt_chbitmask =
3201 cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_5GHZ));
3202 else if (phy_flags_hw & RX_RES_PHY_FLAGS_MOD_CCK_MSK)
3203 iwl_rt->rt_chbitmask =
3204 cpu_to_le16((IEEE80211_CHAN_CCK | IEEE80211_CHAN_2GHZ));
3205 else /* 802.11g */
3206 iwl_rt->rt_chbitmask =
3207 cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_2GHZ));
3208
3209 rate = iwl_rate_index_from_plcp(rate);
3210 if (rate == -1)
3211 iwl_rt->rt_rate = 0;
3212 else
3213 iwl_rt->rt_rate = iwl_rates[rate].ieee;
3214
3215 /* antenna number */
3216 iwl_rt->rt_antenna =
3217 le16_to_cpu(phy_flags_hw & RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4;
3218
3219 /* set the preamble flag if we have it */
3220 if (phy_flags_hw & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
3221 iwl_rt->rt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3222
3223 IWL_DEBUG_RX("Rx packet of %d bytes.\n", rxb->skb->len);
3224
3225 stats->flag |= RX_FLAG_RADIOTAP;
3226 ieee80211_rx_irqsafe(priv->hw, rxb->skb, stats);
3227 rxb->skb = NULL;
3228}
3229
3230
3231#define IWL_PACKET_RETRY_TIME HZ
3232
3233int is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
3234{
3235 u16 sc = le16_to_cpu(header->seq_ctrl);
3236 u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
3237 u16 frag = sc & IEEE80211_SCTL_FRAG;
3238 u16 *last_seq, *last_frag;
3239 unsigned long *last_time;
3240
3241 switch (priv->iw_mode) {
3242 case IEEE80211_IF_TYPE_IBSS:{
3243 struct list_head *p;
3244 struct iwl_ibss_seq *entry = NULL;
3245 u8 *mac = header->addr2;
3246 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
3247
3248 __list_for_each(p, &priv->ibss_mac_hash[index]) {
3249 entry =
3250 list_entry(p, struct iwl_ibss_seq, list);
3251 if (!compare_ether_addr(entry->mac, mac))
3252 break;
3253 }
3254 if (p == &priv->ibss_mac_hash[index]) {
3255 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
3256 if (!entry) {
3257 IWL_ERROR
3258 ("Cannot malloc new mac entry\n");
3259 return 0;
3260 }
3261 memcpy(entry->mac, mac, ETH_ALEN);
3262 entry->seq_num = seq;
3263 entry->frag_num = frag;
3264 entry->packet_time = jiffies;
3265 list_add(&entry->list,
3266 &priv->ibss_mac_hash[index]);
3267 return 0;
3268 }
3269 last_seq = &entry->seq_num;
3270 last_frag = &entry->frag_num;
3271 last_time = &entry->packet_time;
3272 break;
3273 }
3274 case IEEE80211_IF_TYPE_STA:
3275 last_seq = &priv->last_seq_num;
3276 last_frag = &priv->last_frag_num;
3277 last_time = &priv->last_packet_time;
3278 break;
3279 default:
3280 return 0;
3281 }
3282 if ((*last_seq == seq) &&
3283 time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
3284 if (*last_frag == frag)
3285 goto drop;
3286 if (*last_frag + 1 != frag)
3287 /* out-of-order fragment */
3288 goto drop;
3289 } else
3290 *last_seq = seq;
3291
3292 *last_frag = frag;
3293 *last_time = jiffies;
3294 return 0;
3295
3296 drop:
3297 return 1;
3298}
3299
3300#ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
3301
3302#include "iwl-spectrum.h"
3303
3304#define BEACON_TIME_MASK_LOW 0x00FFFFFF
3305#define BEACON_TIME_MASK_HIGH 0xFF000000
3306#define TIME_UNIT 1024
3307
3308/*
3309 * extended beacon time format
3310 * time in usec will be changed into a 32-bit value in 8:24 format
3311 * the high 1 byte is the beacon counts
3312 * the lower 3 bytes is the time in usec within one beacon interval
3313 */
3314
3315static u32 iwl_usecs_to_beacons(u32 usec, u32 beacon_interval)
3316{
3317 u32 quot;
3318 u32 rem;
3319 u32 interval = beacon_interval * 1024;
3320
3321 if (!interval || !usec)
3322 return 0;
3323
3324 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
3325 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
3326
3327 return (quot << 24) + rem;
3328}
3329
3330/* base is usually what we get from ucode with each received frame,
3331 * the same as HW timer counter counting down
3332 */
3333
3334static __le32 iwl_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
3335{
3336 u32 base_low = base & BEACON_TIME_MASK_LOW;
3337 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
3338 u32 interval = beacon_interval * TIME_UNIT;
3339 u32 res = (base & BEACON_TIME_MASK_HIGH) +
3340 (addon & BEACON_TIME_MASK_HIGH);
3341
3342 if (base_low > addon_low)
3343 res += base_low - addon_low;
3344 else if (base_low < addon_low) {
3345 res += interval + base_low - addon_low;
3346 res += (1 << 24);
3347 } else
3348 res += (1 << 24);
3349
3350 return cpu_to_le32(res);
3351}
3352
3353static int iwl_get_measurement(struct iwl_priv *priv,
3354 struct ieee80211_measurement_params *params,
3355 u8 type)
3356{
3357 struct iwl_spectrum_cmd spectrum;
3358 struct iwl_rx_packet *res;
3359 struct iwl_host_cmd cmd = {
3360 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
3361 .data = (void *)&spectrum,
3362 .meta.flags = CMD_WANT_SKB,
3363 };
3364 u32 add_time = le64_to_cpu(params->start_time);
3365 int rc;
3366 int spectrum_resp_status;
3367 int duration = le16_to_cpu(params->duration);
3368
3369 if (iwl_is_associated(priv))
3370 add_time =
3371 iwl_usecs_to_beacons(
3372 le64_to_cpu(params->start_time) - priv->last_tsf,
3373 le16_to_cpu(priv->rxon_timing.beacon_interval));
3374
3375 memset(&spectrum, 0, sizeof(spectrum));
3376
3377 spectrum.channel_count = cpu_to_le16(1);
3378 spectrum.flags =
3379 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
3380 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
3381 cmd.len = sizeof(spectrum);
3382 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
3383
3384 if (iwl_is_associated(priv))
3385 spectrum.start_time =
3386 iwl_add_beacon_time(priv->last_beacon_time,
3387 add_time,
3388 le16_to_cpu(priv->rxon_timing.beacon_interval));
3389 else
3390 spectrum.start_time = 0;
3391
3392 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
3393 spectrum.channels[0].channel = params->channel;
3394 spectrum.channels[0].type = type;
3395 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
3396 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
3397 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
3398
3399 rc = iwl_send_cmd_sync(priv, &cmd);
3400 if (rc)
3401 return rc;
3402
3403 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
3404 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
3405 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
3406 rc = -EIO;
3407 }
3408
3409 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
3410 switch (spectrum_resp_status) {
3411 case 0: /* Command will be handled */
3412 if (res->u.spectrum.id != 0xff) {
3413 IWL_DEBUG_INFO
3414 ("Replaced existing measurement: %d\n",
3415 res->u.spectrum.id);
3416 priv->measurement_status &= ~MEASUREMENT_READY;
3417 }
3418 priv->measurement_status |= MEASUREMENT_ACTIVE;
3419 rc = 0;
3420 break;
3421
3422 case 1: /* Command will not be handled */
3423 rc = -EAGAIN;
3424 break;
3425 }
3426
3427 dev_kfree_skb_any(cmd.meta.u.skb);
3428
3429 return rc;
3430}
3431#endif
3432
3433static void iwl_txstatus_to_ieee(struct iwl_priv *priv,
3434 struct iwl_tx_info *tx_sta)
3435{
3436
3437 tx_sta->status.ack_signal = 0;
3438 tx_sta->status.excessive_retries = 0;
3439 tx_sta->status.queue_length = 0;
3440 tx_sta->status.queue_number = 0;
3441
3442 if (in_interrupt())
3443 ieee80211_tx_status_irqsafe(priv->hw,
3444 tx_sta->skb[0], &(tx_sta->status));
3445 else
3446 ieee80211_tx_status(priv->hw,
3447 tx_sta->skb[0], &(tx_sta->status));
3448
3449 tx_sta->skb[0] = NULL;
3450}
3451
3452/**
3453 * iwl_tx_queue_reclaim - Reclaim Tx queue entries no more used by NIC.
3454 *
3455 * When FW advances 'R' index, all entries between old and
3456 * new 'R' index need to be reclaimed. As result, some free space
3457 * forms. If there is enough free space (> low mark), wake Tx queue.
3458 */
3459int iwl_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
3460{
3461 struct iwl_tx_queue *txq = &priv->txq[txq_id];
3462 struct iwl_queue *q = &txq->q;
3463 int nfreed = 0;
3464
3465 if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
3466 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3467 "is out of range [0-%d] %d %d.\n", txq_id,
3468 index, q->n_bd, q->first_empty, q->last_used);
3469 return 0;
3470 }
3471
3472 for (index = iwl_queue_inc_wrap(index, q->n_bd);
3473 q->last_used != index;
3474 q->last_used = iwl_queue_inc_wrap(q->last_used, q->n_bd)) {
3475 if (txq_id != IWL_CMD_QUEUE_NUM) {
3476 iwl_txstatus_to_ieee(priv,
3477 &(txq->txb[txq->q.last_used]));
3478 iwl_hw_txq_free_tfd(priv, txq);
3479 } else if (nfreed > 1) {
3480 IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
3481 q->first_empty, q->last_used);
3482 queue_work(priv->workqueue, &priv->restart);
3483 }
3484 nfreed++;
3485 }
3486
3487 if (iwl_queue_space(q) > q->low_mark && (txq_id >= 0) &&
3488 (txq_id != IWL_CMD_QUEUE_NUM) &&
3489 priv->mac80211_registered)
3490 ieee80211_wake_queue(priv->hw, txq_id);
3491
3492
3493 return nfreed;
3494}
3495
3496static int iwl_is_tx_success(u32 status)
3497{
3498 status &= TX_STATUS_MSK;
3499 return (status == TX_STATUS_SUCCESS)
3500 || (status == TX_STATUS_DIRECT_DONE);
3501}
3502
3503/******************************************************************************
3504 *
3505 * Generic RX handler implementations
3506 *
3507 ******************************************************************************/
3508#ifdef CONFIG_IWLWIFI_HT
3509#ifdef CONFIG_IWLWIFI_HT_AGG
3510
3511static inline int iwl_get_ra_sta_id(struct iwl_priv *priv,
3512 struct ieee80211_hdr *hdr)
3513{
3514 if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
3515 return IWL_AP_ID;
3516 else {
3517 u8 *da = ieee80211_get_DA(hdr);
3518 return iwl_hw_find_station(priv, da);
3519 }
3520}
3521
3522static struct ieee80211_hdr *iwl_tx_queue_get_hdr(
3523 struct iwl_priv *priv, int txq_id, int idx)
3524{
3525 if (priv->txq[txq_id].txb[idx].skb[0])
3526 return (struct ieee80211_hdr *)priv->txq[txq_id].
3527 txb[idx].skb[0]->data;
3528 return NULL;
3529}
3530
3531static inline u32 iwl_get_scd_ssn(struct iwl_tx_resp *tx_resp)
3532{
3533 __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
3534 tx_resp->frame_count);
3535 return le32_to_cpu(*scd_ssn) & MAX_SN;
3536
3537}
3538static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv,
3539 struct iwl_ht_agg *agg,
3540 struct iwl_tx_resp *tx_resp,
3541 u16 start_idx)
3542{
3543 u32 status;
3544 __le32 *frame_status = &tx_resp->status;
3545 struct ieee80211_tx_status *tx_status = NULL;
3546 struct ieee80211_hdr *hdr = NULL;
3547 int i, sh;
3548 int txq_id, idx;
3549 u16 seq;
3550
3551 if (agg->wait_for_ba)
3552 IWL_DEBUG_TX_REPLY("got tx repsons w/o back\n");
3553
3554 agg->frame_count = tx_resp->frame_count;
3555 agg->start_idx = start_idx;
3556 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3557 agg->bitmap0 = agg->bitmap1 = 0;
3558
3559 if (agg->frame_count == 1) {
3560 struct iwl_tx_queue *txq ;
3561 status = le32_to_cpu(frame_status[0]);
3562
3563 txq_id = agg->txq_id;
3564 txq = &priv->txq[txq_id];
3565 /* FIXME: code repetition */
3566 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d \n",
3567 agg->frame_count, agg->start_idx);
3568
3569 tx_status = &(priv->txq[txq_id].txb[txq->q.last_used].status);
3570 tx_status->retry_count = tx_resp->failure_frame;
3571 tx_status->queue_number = status & 0xff;
3572 tx_status->queue_length = tx_resp->bt_kill_count;
3573 tx_status->queue_length |= tx_resp->failure_rts;
3574
3575 tx_status->flags = iwl_is_tx_success(status)?
3576 IEEE80211_TX_STATUS_ACK : 0;
3577 tx_status->control.tx_rate =
3578 iwl_hw_get_rate_n_flags(tx_resp->rate_n_flags);
3579 /* FIXME: code repetition end */
3580
3581 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
3582 status & 0xff, tx_resp->failure_frame);
3583 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
3584 iwl_hw_get_rate_n_flags(tx_resp->rate_n_flags));
3585
3586 agg->wait_for_ba = 0;
3587 } else {
3588 u64 bitmap = 0;
3589 int start = agg->start_idx;
3590
3591 for (i = 0; i < agg->frame_count; i++) {
3592 u16 sc;
3593 status = le32_to_cpu(frame_status[i]);
3594 seq = status >> 16;
3595 idx = SEQ_TO_INDEX(seq);
3596 txq_id = SEQ_TO_QUEUE(seq);
3597
3598 if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
3599 AGG_TX_STATE_ABORT_MSK))
3600 continue;
3601
3602 IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
3603 agg->frame_count, txq_id, idx);
3604
3605 hdr = iwl_tx_queue_get_hdr(priv, txq_id, idx);
3606
3607 sc = le16_to_cpu(hdr->seq_ctrl);
3608 if (idx != (SEQ_TO_SN(sc) & 0xff)) {
3609 IWL_ERROR("BUG_ON idx doesn't match seq control"
3610 " idx=%d, seq_idx=%d, seq=%d\n",
3611 idx, SEQ_TO_SN(sc),
3612 hdr->seq_ctrl);
3613 return -1;
3614 }
3615
3616 IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
3617 i, idx, SEQ_TO_SN(sc));
3618
3619 sh = idx - start;
3620 if (sh > 64) {
3621 sh = (start - idx) + 0xff;
3622 bitmap = bitmap << sh;
3623 sh = 0;
3624 start = idx;
3625 } else if (sh < -64)
3626 sh = 0xff - (start - idx);
3627 else if (sh < 0) {
3628 sh = start - idx;
3629 start = idx;
3630 bitmap = bitmap << sh;
3631 sh = 0;
3632 }
3633 bitmap |= (1 << sh);
3634 IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
3635 start, (u32)(bitmap & 0xFFFFFFFF));
3636 }
3637
3638 agg->bitmap0 = bitmap & 0xFFFFFFFF;
3639 agg->bitmap1 = bitmap >> 32;
3640 agg->start_idx = start;
3641 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3642 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%x\n",
3643 agg->frame_count, agg->start_idx,
3644 agg->bitmap0);
3645
3646 if (bitmap)
3647 agg->wait_for_ba = 1;
3648 }
3649 return 0;
3650}
3651#endif
3652#endif
3653
3654static void iwl_rx_reply_tx(struct iwl_priv *priv,
3655 struct iwl_rx_mem_buffer *rxb)
3656{
3657 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3658 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3659 int txq_id = SEQ_TO_QUEUE(sequence);
3660 int index = SEQ_TO_INDEX(sequence);
3661 struct iwl_tx_queue *txq = &priv->txq[txq_id];
3662 struct ieee80211_tx_status *tx_status;
3663 struct iwl_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
3664 u32 status = le32_to_cpu(tx_resp->status);
3665#ifdef CONFIG_IWLWIFI_HT
3666#ifdef CONFIG_IWLWIFI_HT_AGG
3667 int tid, sta_id;
3668#endif
3669#endif
3670
3671 if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
3672 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3673 "is out of range [0-%d] %d %d\n", txq_id,
3674 index, txq->q.n_bd, txq->q.first_empty,
3675 txq->q.last_used);
3676 return;
3677 }
3678
3679#ifdef CONFIG_IWLWIFI_HT
3680#ifdef CONFIG_IWLWIFI_HT_AGG
3681 if (txq->sched_retry) {
3682 const u32 scd_ssn = iwl_get_scd_ssn(tx_resp);
3683 struct ieee80211_hdr *hdr =
3684 iwl_tx_queue_get_hdr(priv, txq_id, index);
3685 struct iwl_ht_agg *agg = NULL;
3686 __le16 *qc = ieee80211_get_qos_ctrl(hdr);
3687
3688 if (qc == NULL) {
3689 IWL_ERROR("BUG_ON qc is null!!!!\n");
3690 return;
3691 }
3692
3693 tid = le16_to_cpu(*qc) & 0xf;
3694
3695 sta_id = iwl_get_ra_sta_id(priv, hdr);
3696 if (unlikely(sta_id == IWL_INVALID_STATION)) {
3697 IWL_ERROR("Station not known for\n");
3698 return;
3699 }
3700
3701 agg = &priv->stations[sta_id].tid[tid].agg;
3702
3703 iwl4965_tx_status_reply_tx(priv, agg, tx_resp, index);
3704
3705 if ((tx_resp->frame_count == 1) &&
3706 !iwl_is_tx_success(status)) {
3707 /* TODO: send BAR */
3708 }
3709
3710 if ((txq->q.last_used != (scd_ssn & 0xff))) {
3711 index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
3712 IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
3713 "%d index %d\n", scd_ssn , index);
3714 iwl_tx_queue_reclaim(priv, txq_id, index);
3715 }
3716 } else {
3717#endif /* CONFIG_IWLWIFI_HT_AGG */
3718#endif /* CONFIG_IWLWIFI_HT */
3719 tx_status = &(txq->txb[txq->q.last_used].status);
3720
3721 tx_status->retry_count = tx_resp->failure_frame;
3722 tx_status->queue_number = status;
3723 tx_status->queue_length = tx_resp->bt_kill_count;
3724 tx_status->queue_length |= tx_resp->failure_rts;
3725
3726 tx_status->flags =
3727 iwl_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
3728
3729 tx_status->control.tx_rate =
3730 iwl_hw_get_rate_n_flags(tx_resp->rate_n_flags);
3731
3732 IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
3733 "retries %d\n", txq_id, iwl_get_tx_fail_reason(status),
3734 status, le32_to_cpu(tx_resp->rate_n_flags),
3735 tx_resp->failure_frame);
3736
3737 IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
3738 if (index != -1)
3739 iwl_tx_queue_reclaim(priv, txq_id, index);
3740#ifdef CONFIG_IWLWIFI_HT
3741#ifdef CONFIG_IWLWIFI_HT_AGG
3742 }
3743#endif /* CONFIG_IWLWIFI_HT_AGG */
3744#endif /* CONFIG_IWLWIFI_HT */
3745
3746 if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
3747 IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n");
3748}
3749
3750
3751static void iwl_rx_reply_alive(struct iwl_priv *priv,
3752 struct iwl_rx_mem_buffer *rxb)
3753{
3754 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3755 struct iwl_alive_resp *palive;
3756 struct delayed_work *pwork;
3757
3758 palive = &pkt->u.alive_frame;
3759
3760 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3761 "0x%01X 0x%01X\n",
3762 palive->is_valid, palive->ver_type,
3763 palive->ver_subtype);
3764
3765 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3766 IWL_DEBUG_INFO("Initialization Alive received.\n");
3767 memcpy(&priv->card_alive_init,
3768 &pkt->u.alive_frame,
3769 sizeof(struct iwl_init_alive_resp));
3770 pwork = &priv->init_alive_start;
3771 } else {
3772 IWL_DEBUG_INFO("Runtime Alive received.\n");
3773 memcpy(&priv->card_alive, &pkt->u.alive_frame,
3774 sizeof(struct iwl_alive_resp));
3775 pwork = &priv->alive_start;
3776 }
3777
3778 /* We delay the ALIVE response by 5ms to
3779 * give the HW RF Kill time to activate... */
3780 if (palive->is_valid == UCODE_VALID_OK)
3781 queue_delayed_work(priv->workqueue, pwork,
3782 msecs_to_jiffies(5));
3783 else
3784 IWL_WARNING("uCode did not respond OK.\n");
3785}
3786
3787static void iwl_rx_reply_add_sta(struct iwl_priv *priv,
3788 struct iwl_rx_mem_buffer *rxb)
3789{
3790 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3791
3792 IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3793 return;
3794}
3795
3796static void iwl_rx_reply_error(struct iwl_priv *priv,
3797 struct iwl_rx_mem_buffer *rxb)
3798{
3799 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3800
3801 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3802 "seq 0x%04X ser 0x%08X\n",
3803 le32_to_cpu(pkt->u.err_resp.error_type),
3804 get_cmd_string(pkt->u.err_resp.cmd_id),
3805 pkt->u.err_resp.cmd_id,
3806 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3807 le32_to_cpu(pkt->u.err_resp.error_info));
3808}
3809
3810#define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3811
3812static void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
3813{
3814 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3815 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
3816 struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
3817 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3818 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3819 rxon->channel = csa->channel;
3820 priv->staging_rxon.channel = csa->channel;
3821}
3822
3823static void iwl_rx_spectrum_measure_notif(struct iwl_priv *priv,
3824 struct iwl_rx_mem_buffer *rxb)
3825{
3826#ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
3827 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3828 struct iwl_spectrum_notification *report = &(pkt->u.spectrum_notif);
3829
3830 if (!report->state) {
3831 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3832 "Spectrum Measure Notification: Start\n");
3833 return;
3834 }
3835
3836 memcpy(&priv->measure_report, report, sizeof(*report));
3837 priv->measurement_status |= MEASUREMENT_READY;
3838#endif
3839}
3840
3841static void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
3842 struct iwl_rx_mem_buffer *rxb)
3843{
3844#ifdef CONFIG_IWLWIFI_DEBUG
3845 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3846 struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
3847 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3848 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3849#endif
3850}
3851
3852static void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
3853 struct iwl_rx_mem_buffer *rxb)
3854{
3855 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3856 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3857 "notification for %s:\n",
3858 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3859 iwl_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3860}
3861
3862static void iwl_bg_beacon_update(struct work_struct *work)
3863{
3864 struct iwl_priv *priv =
3865 container_of(work, struct iwl_priv, beacon_update);
3866 struct sk_buff *beacon;
3867
3868 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3869 beacon = ieee80211_beacon_get(priv->hw, priv->interface_id, NULL);
3870
3871 if (!beacon) {
3872 IWL_ERROR("update beacon failed\n");
3873 return;
3874 }
3875
3876 mutex_lock(&priv->mutex);
3877 /* new beacon skb is allocated every time; dispose previous.*/
3878 if (priv->ibss_beacon)
3879 dev_kfree_skb(priv->ibss_beacon);
3880
3881 priv->ibss_beacon = beacon;
3882 mutex_unlock(&priv->mutex);
3883
3884 iwl_send_beacon_cmd(priv);
3885}
3886
3887static void iwl_rx_beacon_notif(struct iwl_priv *priv,
3888 struct iwl_rx_mem_buffer *rxb)
3889{
3890#ifdef CONFIG_IWLWIFI_DEBUG
3891 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3892 struct iwl_beacon_notif *beacon = &(pkt->u.beacon_status);
3893 u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
3894
3895 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3896 "tsf %d %d rate %d\n",
3897 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3898 beacon->beacon_notify_hdr.failure_frame,
3899 le32_to_cpu(beacon->ibss_mgr_status),
3900 le32_to_cpu(beacon->high_tsf),
3901 le32_to_cpu(beacon->low_tsf), rate);
3902#endif
3903
3904 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3905 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3906 queue_work(priv->workqueue, &priv->beacon_update);
3907}
3908
3909/* Service response to REPLY_SCAN_CMD (0x80) */
3910static void iwl_rx_reply_scan(struct iwl_priv *priv,
3911 struct iwl_rx_mem_buffer *rxb)
3912{
3913#ifdef CONFIG_IWLWIFI_DEBUG
3914 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3915 struct iwl_scanreq_notification *notif =
3916 (struct iwl_scanreq_notification *)pkt->u.raw;
3917
3918 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3919#endif
3920}
3921
3922/* Service SCAN_START_NOTIFICATION (0x82) */
3923static void iwl_rx_scan_start_notif(struct iwl_priv *priv,
3924 struct iwl_rx_mem_buffer *rxb)
3925{
3926 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3927 struct iwl_scanstart_notification *notif =
3928 (struct iwl_scanstart_notification *)pkt->u.raw;
3929 priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3930 IWL_DEBUG_SCAN("Scan start: "
3931 "%d [802.11%s] "
3932 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3933 notif->channel,
3934 notif->band ? "bg" : "a",
3935 notif->tsf_high,
3936 notif->tsf_low, notif->status, notif->beacon_timer);
3937}
3938
3939/* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3940static void iwl_rx_scan_results_notif(struct iwl_priv *priv,
3941 struct iwl_rx_mem_buffer *rxb)
3942{
3943 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3944 struct iwl_scanresults_notification *notif =
3945 (struct iwl_scanresults_notification *)pkt->u.raw;
3946
3947 IWL_DEBUG_SCAN("Scan ch.res: "
3948 "%d [802.11%s] "
3949 "(TSF: 0x%08X:%08X) - %d "
3950 "elapsed=%lu usec (%dms since last)\n",
3951 notif->channel,
3952 notif->band ? "bg" : "a",
3953 le32_to_cpu(notif->tsf_high),
3954 le32_to_cpu(notif->tsf_low),
3955 le32_to_cpu(notif->statistics[0]),
3956 le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3957 jiffies_to_msecs(elapsed_jiffies
3958 (priv->last_scan_jiffies, jiffies)));
3959
3960 priv->last_scan_jiffies = jiffies;
3961}
3962
3963/* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3964static void iwl_rx_scan_complete_notif(struct iwl_priv *priv,
3965 struct iwl_rx_mem_buffer *rxb)
3966{
3967 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3968 struct iwl_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
3969
3970 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3971 scan_notif->scanned_channels,
3972 scan_notif->tsf_low,
3973 scan_notif->tsf_high, scan_notif->status);
3974
3975 /* The HW is no longer scanning */
3976 clear_bit(STATUS_SCAN_HW, &priv->status);
3977
3978 /* The scan completion notification came in, so kill that timer... */
3979 cancel_delayed_work(&priv->scan_check);
3980
3981 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3982 (priv->scan_bands == 2) ? "2.4" : "5.2",
3983 jiffies_to_msecs(elapsed_jiffies
3984 (priv->scan_pass_start, jiffies)));
3985
3986 /* Remove this scanned band from the list
3987 * of pending bands to scan */
3988 priv->scan_bands--;
3989
3990 /* If a request to abort was given, or the scan did not succeed
3991 * then we reset the scan state machine and terminate,
3992 * re-queuing another scan if one has been requested */
3993 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3994 IWL_DEBUG_INFO("Aborted scan completed.\n");
3995 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3996 } else {
3997 /* If there are more bands on this scan pass reschedule */
3998 if (priv->scan_bands > 0)
3999 goto reschedule;
4000 }
4001
4002 priv->last_scan_jiffies = jiffies;
4003 IWL_DEBUG_INFO("Setting scan to off\n");
4004
4005 clear_bit(STATUS_SCANNING, &priv->status);
4006
4007 IWL_DEBUG_INFO("Scan took %dms\n",
4008 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
4009
4010 queue_work(priv->workqueue, &priv->scan_completed);
4011
4012 return;
4013
4014reschedule:
4015 priv->scan_pass_start = jiffies;
4016 queue_work(priv->workqueue, &priv->request_scan);
4017}
4018
4019/* Handle notification from uCode that card's power state is changing
4020 * due to software, hardware, or critical temperature RFKILL */
4021static void iwl_rx_card_state_notif(struct iwl_priv *priv,
4022 struct iwl_rx_mem_buffer *rxb)
4023{
4024 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
4025 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
4026 unsigned long status = priv->status;
4027
4028 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
4029 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
4030 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
4031
4032 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
4033 RF_CARD_DISABLED)) {
4034
4035 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
4036 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
4037
4038 if (!iwl_grab_restricted_access(priv)) {
4039 iwl_write_restricted(
4040 priv, HBUS_TARG_MBX_C,
4041 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
4042
4043 iwl_release_restricted_access(priv);
4044 }
4045
4046 if (!(flags & RXON_CARD_DISABLED)) {
4047 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
4048 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
4049 if (!iwl_grab_restricted_access(priv)) {
4050 iwl_write_restricted(
4051 priv, HBUS_TARG_MBX_C,
4052 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
4053
4054 iwl_release_restricted_access(priv);
4055 }
4056 }
4057
4058 if (flags & RF_CARD_DISABLED) {
4059 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
4060 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
4061 iwl_read32(priv, CSR_UCODE_DRV_GP1);
4062 if (!iwl_grab_restricted_access(priv))
4063 iwl_release_restricted_access(priv);
4064 }
4065 }
4066
4067 if (flags & HW_CARD_DISABLED)
4068 set_bit(STATUS_RF_KILL_HW, &priv->status);
4069 else
4070 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4071
4072
4073 if (flags & SW_CARD_DISABLED)
4074 set_bit(STATUS_RF_KILL_SW, &priv->status);
4075 else
4076 clear_bit(STATUS_RF_KILL_SW, &priv->status);
4077
4078 if (!(flags & RXON_CARD_DISABLED))
4079 iwl_scan_cancel(priv);
4080
4081 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
4082 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
4083 (test_bit(STATUS_RF_KILL_SW, &status) !=
4084 test_bit(STATUS_RF_KILL_SW, &priv->status)))
4085 queue_work(priv->workqueue, &priv->rf_kill);
4086 else
4087 wake_up_interruptible(&priv->wait_command_queue);
4088}
4089
4090/**
4091 * iwl_setup_rx_handlers - Initialize Rx handler callbacks
4092 *
4093 * Setup the RX handlers for each of the reply types sent from the uCode
4094 * to the host.
4095 *
4096 * This function chains into the hardware specific files for them to setup
4097 * any hardware specific handlers as well.
4098 */
4099static void iwl_setup_rx_handlers(struct iwl_priv *priv)
4100{
4101 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
4102 priv->rx_handlers[REPLY_ADD_STA] = iwl_rx_reply_add_sta;
4103 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
4104 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
4105 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
4106 iwl_rx_spectrum_measure_notif;
4107 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
4108 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
4109 iwl_rx_pm_debug_statistics_notif;
4110 priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
4111
4112 /* NOTE: iwl_rx_statistics is different based on whether
4113 * the build is for the 3945 or the 4965. See the
4114 * corresponding implementation in iwl-XXXX.c
4115 *
4116 * The same handler is used for both the REPLY to a
4117 * discrete statistics request from the host as well as
4118 * for the periodic statistics notification from the uCode
4119 */
4120 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_hw_rx_statistics;
4121 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_hw_rx_statistics;
4122
4123 priv->rx_handlers[REPLY_SCAN_CMD] = iwl_rx_reply_scan;
4124 priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl_rx_scan_start_notif;
4125 priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
4126 iwl_rx_scan_results_notif;
4127 priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
4128 iwl_rx_scan_complete_notif;
4129 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
4130 priv->rx_handlers[REPLY_TX] = iwl_rx_reply_tx;
4131
4132 /* Setup hardware specific Rx handlers */
4133 iwl_hw_rx_handler_setup(priv);
4134}
4135
4136/**
4137 * iwl_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
4138 * @rxb: Rx buffer to reclaim
4139 *
4140 * If an Rx buffer has an async callback associated with it the callback
4141 * will be executed. The attached skb (if present) will only be freed
4142 * if the callback returns 1
4143 */
4144static void iwl_tx_cmd_complete(struct iwl_priv *priv,
4145 struct iwl_rx_mem_buffer *rxb)
4146{
4147 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
4148 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
4149 int txq_id = SEQ_TO_QUEUE(sequence);
4150 int index = SEQ_TO_INDEX(sequence);
4151 int huge = sequence & SEQ_HUGE_FRAME;
4152 int cmd_index;
4153 struct iwl_cmd *cmd;
4154
4155 /* If a Tx command is being handled and it isn't in the actual
4156 * command queue then there a command routing bug has been introduced
4157 * in the queue management code. */
4158 if (txq_id != IWL_CMD_QUEUE_NUM)
4159 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
4160 txq_id, pkt->hdr.cmd);
4161 BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
4162
4163 cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
4164 cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
4165
4166 /* Input error checking is done when commands are added to queue. */
4167 if (cmd->meta.flags & CMD_WANT_SKB) {
4168 cmd->meta.source->u.skb = rxb->skb;
4169 rxb->skb = NULL;
4170 } else if (cmd->meta.u.callback &&
4171 !cmd->meta.u.callback(priv, cmd, rxb->skb))
4172 rxb->skb = NULL;
4173
4174 iwl_tx_queue_reclaim(priv, txq_id, index);
4175
4176 if (!(cmd->meta.flags & CMD_ASYNC)) {
4177 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4178 wake_up_interruptible(&priv->wait_command_queue);
4179 }
4180}
4181
4182/************************** RX-FUNCTIONS ****************************/
4183/*
4184 * Rx theory of operation
4185 *
4186 * The host allocates 32 DMA target addresses and passes the host address
4187 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
4188 * 0 to 31
4189 *
4190 * Rx Queue Indexes
4191 * The host/firmware share two index registers for managing the Rx buffers.
4192 *
4193 * The READ index maps to the first position that the firmware may be writing
4194 * to -- the driver can read up to (but not including) this position and get
4195 * good data.
4196 * The READ index is managed by the firmware once the card is enabled.
4197 *
4198 * The WRITE index maps to the last position the driver has read from -- the
4199 * position preceding WRITE is the last slot the firmware can place a packet.
4200 *
4201 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
4202 * WRITE = READ.
4203 *
4204 * During initialization the host sets up the READ queue position to the first
4205 * INDEX position, and WRITE to the last (READ - 1 wrapped)
4206 *
4207 * When the firmware places a packet in a buffer it will advance the READ index
4208 * and fire the RX interrupt. The driver can then query the READ index and
4209 * process as many packets as possible, moving the WRITE index forward as it
4210 * resets the Rx queue buffers with new memory.
4211 *
4212 * The management in the driver is as follows:
4213 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
4214 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
4215 * to replensish the iwl->rxq->rx_free.
4216 * + In iwl_rx_replenish (scheduled) if 'processed' != 'read' then the
4217 * iwl->rxq is replenished and the READ INDEX is updated (updating the
4218 * 'processed' and 'read' driver indexes as well)
4219 * + A received packet is processed and handed to the kernel network stack,
4220 * detached from the iwl->rxq. The driver 'processed' index is updated.
4221 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
4222 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
4223 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
4224 * were enough free buffers and RX_STALLED is set it is cleared.
4225 *
4226 *
4227 * Driver sequence:
4228 *
4229 * iwl_rx_queue_alloc() Allocates rx_free
4230 * iwl_rx_replenish() Replenishes rx_free list from rx_used, and calls
4231 * iwl_rx_queue_restock
4232 * iwl_rx_queue_restock() Moves available buffers from rx_free into Rx
4233 * queue, updates firmware pointers, and updates
4234 * the WRITE index. If insufficient rx_free buffers
4235 * are available, schedules iwl_rx_replenish
4236 *
4237 * -- enable interrupts --
4238 * ISR - iwl_rx() Detach iwl_rx_mem_buffers from pool up to the
4239 * READ INDEX, detaching the SKB from the pool.
4240 * Moves the packet buffer from queue to rx_used.
4241 * Calls iwl_rx_queue_restock to refill any empty
4242 * slots.
4243 * ...
4244 *
4245 */
4246
4247/**
4248 * iwl_rx_queue_space - Return number of free slots available in queue.
4249 */
4250static int iwl_rx_queue_space(const struct iwl_rx_queue *q)
4251{
4252 int s = q->read - q->write;
4253 if (s <= 0)
4254 s += RX_QUEUE_SIZE;
4255 /* keep some buffer to not confuse full and empty queue */
4256 s -= 2;
4257 if (s < 0)
4258 s = 0;
4259 return s;
4260}
4261
4262/**
4263 * iwl_rx_queue_update_write_ptr - Update the write pointer for the RX queue
4264 *
4265 * NOTE: This function has 3945 and 4965 specific code sections
4266 * but is declared in base due to the majority of the
4267 * implementation being the same (only a numeric constant is
4268 * different)
4269 *
4270 */
4271int iwl_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl_rx_queue *q)
4272{
4273 u32 reg = 0;
4274 int rc = 0;
4275 unsigned long flags;
4276
4277 spin_lock_irqsave(&q->lock, flags);
4278
4279 if (q->need_update == 0)
4280 goto exit_unlock;
4281
4282 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4283 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
4284
4285 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4286 iwl_set_bit(priv, CSR_GP_CNTRL,
4287 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4288 goto exit_unlock;
4289 }
4290
4291 rc = iwl_grab_restricted_access(priv);
4292 if (rc)
4293 goto exit_unlock;
4294
4295 iwl_write_restricted(priv, FH_RSCSR_CHNL0_WPTR,
4296 q->write & ~0x7);
4297 iwl_release_restricted_access(priv);
4298 } else
4299 iwl_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
4300
4301
4302 q->need_update = 0;
4303
4304 exit_unlock:
4305 spin_unlock_irqrestore(&q->lock, flags);
4306 return rc;
4307}
4308
4309/**
4310 * iwl_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer pointer.
4311 *
4312 * NOTE: This function has 3945 and 4965 specific code paths in it.
4313 */
4314static inline __le32 iwl_dma_addr2rbd_ptr(struct iwl_priv *priv,
4315 dma_addr_t dma_addr)
4316{
4317 return cpu_to_le32((u32)(dma_addr >> 8));
4318}
4319
4320
4321/**
4322 * iwl_rx_queue_restock - refill RX queue from pre-allocated pool
4323 *
4324 * If there are slots in the RX queue that need to be restocked,
4325 * and we have free pre-allocated buffers, fill the ranks as much
4326 * as we can pulling from rx_free.
4327 *
4328 * This moves the 'write' index forward to catch up with 'processed', and
4329 * also updates the memory address in the firmware to reference the new
4330 * target buffer.
4331 */
4332int iwl_rx_queue_restock(struct iwl_priv *priv)
4333{
4334 struct iwl_rx_queue *rxq = &priv->rxq;
4335 struct list_head *element;
4336 struct iwl_rx_mem_buffer *rxb;
4337 unsigned long flags;
4338 int write, rc;
4339
4340 spin_lock_irqsave(&rxq->lock, flags);
4341 write = rxq->write & ~0x7;
4342 while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
4343 element = rxq->rx_free.next;
4344 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
4345 list_del(element);
4346 rxq->bd[rxq->write] = iwl_dma_addr2rbd_ptr(priv, rxb->dma_addr);
4347 rxq->queue[rxq->write] = rxb;
4348 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
4349 rxq->free_count--;
4350 }
4351 spin_unlock_irqrestore(&rxq->lock, flags);
4352 /* If the pre-allocated buffer pool is dropping low, schedule to
4353 * refill it */
4354 if (rxq->free_count <= RX_LOW_WATERMARK)
4355 queue_work(priv->workqueue, &priv->rx_replenish);
4356
4357
4358 /* If we've added more space for the firmware to place data, tell it */
4359 if ((write != (rxq->write & ~0x7))
4360 || (abs(rxq->write - rxq->read) > 7)) {
4361 spin_lock_irqsave(&rxq->lock, flags);
4362 rxq->need_update = 1;
4363 spin_unlock_irqrestore(&rxq->lock, flags);
4364 rc = iwl_rx_queue_update_write_ptr(priv, rxq);
4365 if (rc)
4366 return rc;
4367 }
4368
4369 return 0;
4370}
4371
4372/**
4373 * iwl_rx_replensih - Move all used packet from rx_used to rx_free
4374 *
4375 * When moving to rx_free an SKB is allocated for the slot.
4376 *
4377 * Also restock the Rx queue via iwl_rx_queue_restock.
4378 * This is called as a scheduled work item (except for during intialization)
4379 */
4380void iwl_rx_replenish(void *data)
4381{
4382 struct iwl_priv *priv = data;
4383 struct iwl_rx_queue *rxq = &priv->rxq;
4384 struct list_head *element;
4385 struct iwl_rx_mem_buffer *rxb;
4386 unsigned long flags;
4387 spin_lock_irqsave(&rxq->lock, flags);
4388 while (!list_empty(&rxq->rx_used)) {
4389 element = rxq->rx_used.next;
4390 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
4391 rxb->skb =
4392 alloc_skb(IWL_RX_BUF_SIZE, __GFP_NOWARN | GFP_ATOMIC);
4393 if (!rxb->skb) {
4394 if (net_ratelimit())
4395 printk(KERN_CRIT DRV_NAME
4396 ": Can not allocate SKB buffers\n");
4397 /* We don't reschedule replenish work here -- we will
4398 * call the restock method and if it still needs
4399 * more buffers it will schedule replenish */
4400 break;
4401 }
4402 priv->alloc_rxb_skb++;
4403 list_del(element);
4404 rxb->dma_addr =
4405 pci_map_single(priv->pci_dev, rxb->skb->data,
4406 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4407 list_add_tail(&rxb->list, &rxq->rx_free);
4408 rxq->free_count++;
4409 }
4410 spin_unlock_irqrestore(&rxq->lock, flags);
4411
4412 spin_lock_irqsave(&priv->lock, flags);
4413 iwl_rx_queue_restock(priv);
4414 spin_unlock_irqrestore(&priv->lock, flags);
4415}
4416
4417/* Assumes that the skb field of the buffers in 'pool' is kept accurate.
4418 * If an SKB has been detached, the POOL needs to have it's SKB set to NULL
4419 * This free routine walks the list of POOL entries and if SKB is set to
4420 * non NULL it is unmapped and freed
4421 */
4422void iwl_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
4423{
4424 int i;
4425 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
4426 if (rxq->pool[i].skb != NULL) {
4427 pci_unmap_single(priv->pci_dev,
4428 rxq->pool[i].dma_addr,
4429 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4430 dev_kfree_skb(rxq->pool[i].skb);
4431 }
4432 }
4433
4434 pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
4435 rxq->dma_addr);
4436 rxq->bd = NULL;
4437}
4438
4439int iwl_rx_queue_alloc(struct iwl_priv *priv)
4440{
4441 struct iwl_rx_queue *rxq = &priv->rxq;
4442 struct pci_dev *dev = priv->pci_dev;
4443 int i;
4444
4445 spin_lock_init(&rxq->lock);
4446 INIT_LIST_HEAD(&rxq->rx_free);
4447 INIT_LIST_HEAD(&rxq->rx_used);
4448 rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
4449 if (!rxq->bd)
4450 return -ENOMEM;
4451 /* Fill the rx_used queue with _all_ of the Rx buffers */
4452 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
4453 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4454 /* Set us so that we have processed and used all buffers, but have
4455 * not restocked the Rx queue with fresh buffers */
4456 rxq->read = rxq->write = 0;
4457 rxq->free_count = 0;
4458 rxq->need_update = 0;
4459 return 0;
4460}
4461
4462void iwl_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
4463{
4464 unsigned long flags;
4465 int i;
4466 spin_lock_irqsave(&rxq->lock, flags);
4467 INIT_LIST_HEAD(&rxq->rx_free);
4468 INIT_LIST_HEAD(&rxq->rx_used);
4469 /* Fill the rx_used queue with _all_ of the Rx buffers */
4470 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
4471 /* In the reset function, these buffers may have been allocated
4472 * to an SKB, so we need to unmap and free potential storage */
4473 if (rxq->pool[i].skb != NULL) {
4474 pci_unmap_single(priv->pci_dev,
4475 rxq->pool[i].dma_addr,
4476 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4477 priv->alloc_rxb_skb--;
4478 dev_kfree_skb(rxq->pool[i].skb);
4479 rxq->pool[i].skb = NULL;
4480 }
4481 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4482 }
4483
4484 /* Set us so that we have processed and used all buffers, but have
4485 * not restocked the Rx queue with fresh buffers */
4486 rxq->read = rxq->write = 0;
4487 rxq->free_count = 0;
4488 spin_unlock_irqrestore(&rxq->lock, flags);
4489}
4490
4491/* Convert linear signal-to-noise ratio into dB */
4492static u8 ratio2dB[100] = {
4493/* 0 1 2 3 4 5 6 7 8 9 */
4494 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
4495 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
4496 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
4497 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
4498 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
4499 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
4500 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
4501 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
4502 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
4503 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
4504};
4505
4506/* Calculates a relative dB value from a ratio of linear
4507 * (i.e. not dB) signal levels.
4508 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4509int iwl_calc_db_from_ratio(int sig_ratio)
4510{
4511 /* Anything above 1000:1 just report as 60 dB */
4512 if (sig_ratio > 1000)
4513 return 60;
4514
4515 /* Above 100:1, divide by 10 and use table,
4516 * add 20 dB to make up for divide by 10 */
4517 if (sig_ratio > 100)
4518 return (20 + (int)ratio2dB[sig_ratio/10]);
4519
4520 /* We shouldn't see this */
4521 if (sig_ratio < 1)
4522 return 0;
4523
4524 /* Use table for ratios 1:1 - 99:1 */
4525 return (int)ratio2dB[sig_ratio];
4526}
4527
4528#define PERFECT_RSSI (-20) /* dBm */
4529#define WORST_RSSI (-95) /* dBm */
4530#define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4531
4532/* Calculate an indication of rx signal quality (a percentage, not dBm!).
4533 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4534 * about formulas used below. */
4535int iwl_calc_sig_qual(int rssi_dbm, int noise_dbm)
4536{
4537 int sig_qual;
4538 int degradation = PERFECT_RSSI - rssi_dbm;
4539
4540 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
4541 * as indicator; formula is (signal dbm - noise dbm).
4542 * SNR at or above 40 is a great signal (100%).
4543 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4544 * Weakest usable signal is usually 10 - 15 dB SNR. */
4545 if (noise_dbm) {
4546 if (rssi_dbm - noise_dbm >= 40)
4547 return 100;
4548 else if (rssi_dbm < noise_dbm)
4549 return 0;
4550 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
4551
4552 /* Else use just the signal level.
4553 * This formula is a least squares fit of data points collected and
4554 * compared with a reference system that had a percentage (%) display
4555 * for signal quality. */
4556 } else
4557 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
4558 (15 * RSSI_RANGE + 62 * degradation)) /
4559 (RSSI_RANGE * RSSI_RANGE);
4560
4561 if (sig_qual > 100)
4562 sig_qual = 100;
4563 else if (sig_qual < 1)
4564 sig_qual = 0;
4565
4566 return sig_qual;
4567}
4568
4569/**
4570 * iwl_rx_handle - Main entry function for receiving responses from the uCode
4571 *
4572 * Uses the priv->rx_handlers callback function array to invoke
4573 * the appropriate handlers, including command responses,
4574 * frame-received notifications, and other notifications.
4575 */
4576static void iwl_rx_handle(struct iwl_priv *priv)
4577{
4578 struct iwl_rx_mem_buffer *rxb;
4579 struct iwl_rx_packet *pkt;
4580 struct iwl_rx_queue *rxq = &priv->rxq;
4581 u32 r, i;
4582 int reclaim;
4583 unsigned long flags;
4584
4585 r = iwl_hw_get_rx_read(priv);
4586 i = rxq->read;
4587
4588 /* Rx interrupt, but nothing sent from uCode */
4589 if (i == r)
4590 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
4591
4592 while (i != r) {
4593 rxb = rxq->queue[i];
4594
4595 /* If an RXB doesn't have a queue slot associated with it
4596 * then a bug has been introduced in the queue refilling
4597 * routines -- catch it here */
4598 BUG_ON(rxb == NULL);
4599
4600 rxq->queue[i] = NULL;
4601
4602 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
4603 IWL_RX_BUF_SIZE,
4604 PCI_DMA_FROMDEVICE);
4605 pkt = (struct iwl_rx_packet *)rxb->skb->data;
4606
4607 /* Reclaim a command buffer only if this packet is a response
4608 * to a (driver-originated) command.
4609 * If the packet (e.g. Rx frame) originated from uCode,
4610 * there is no command buffer to reclaim.
4611 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4612 * but apparently a few don't get set; catch them here. */
4613 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
4614 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
4615 (pkt->hdr.cmd != REPLY_4965_RX) &&
4616 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
4617 (pkt->hdr.cmd != REPLY_TX);
4618
4619 /* Based on type of command response or notification,
4620 * handle those that need handling via function in
4621 * rx_handlers table. See iwl_setup_rx_handlers() */
4622 if (priv->rx_handlers[pkt->hdr.cmd]) {
4623 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4624 "r = %d, i = %d, %s, 0x%02x\n", r, i,
4625 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
4626 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
4627 } else {
4628 /* No handling needed */
4629 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4630 "r %d i %d No handler needed for %s, 0x%02x\n",
4631 r, i, get_cmd_string(pkt->hdr.cmd),
4632 pkt->hdr.cmd);
4633 }
4634
4635 if (reclaim) {
4636 /* Invoke any callbacks, transfer the skb to caller,
4637 * and fire off the (possibly) blocking iwl_send_cmd()
4638 * as we reclaim the driver command queue */
4639 if (rxb && rxb->skb)
4640 iwl_tx_cmd_complete(priv, rxb);
4641 else
4642 IWL_WARNING("Claim null rxb?\n");
4643 }
4644
4645 /* For now we just don't re-use anything. We can tweak this
4646 * later to try and re-use notification packets and SKBs that
4647 * fail to Rx correctly */
4648 if (rxb->skb != NULL) {
4649 priv->alloc_rxb_skb--;
4650 dev_kfree_skb_any(rxb->skb);
4651 rxb->skb = NULL;
4652 }
4653
4654 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
4655 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4656 spin_lock_irqsave(&rxq->lock, flags);
4657 list_add_tail(&rxb->list, &priv->rxq.rx_used);
4658 spin_unlock_irqrestore(&rxq->lock, flags);
4659 i = (i + 1) & RX_QUEUE_MASK;
4660 }
4661
4662 /* Backtrack one entry */
4663 priv->rxq.read = i;
4664 iwl_rx_queue_restock(priv);
4665}
4666
4667int iwl_tx_queue_update_write_ptr(struct iwl_priv *priv,
4668 struct iwl_tx_queue *txq)
4669{
4670 u32 reg = 0;
4671 int rc = 0;
4672 int txq_id = txq->q.id;
4673
4674 if (txq->need_update == 0)
4675 return rc;
4676
4677 /* if we're trying to save power */
4678 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4679 /* wake up nic if it's powered down ...
4680 * uCode will wake up, and interrupt us again, so next
4681 * time we'll skip this part. */
4682 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
4683
4684 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4685 IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4686 iwl_set_bit(priv, CSR_GP_CNTRL,
4687 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4688 return rc;
4689 }
4690
4691 /* restore this queue's parameters in nic hardware. */
4692 rc = iwl_grab_restricted_access(priv);
4693 if (rc)
4694 return rc;
4695 iwl_write_restricted(priv, HBUS_TARG_WRPTR,
4696 txq->q.first_empty | (txq_id << 8));
4697 iwl_release_restricted_access(priv);
4698
4699 /* else not in power-save mode, uCode will never sleep when we're
4700 * trying to tx (during RFKILL, we're not trying to tx). */
4701 } else
4702 iwl_write32(priv, HBUS_TARG_WRPTR,
4703 txq->q.first_empty | (txq_id << 8));
4704
4705 txq->need_update = 0;
4706
4707 return rc;
4708}
4709
4710#ifdef CONFIG_IWLWIFI_DEBUG
4711static void iwl_print_rx_config_cmd(struct iwl_rxon_cmd *rxon)
4712{
0795af57
JP		 4713 DECLARE_MAC_BUF(mac);
4714
b481de9c
ZY		 4715 IWL_DEBUG_RADIO("RX CONFIG:\n");
4716 iwl_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4717 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4718 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4719 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4720 le32_to_cpu(rxon->filter_flags));
4721 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4722 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4723 rxon->ofdm_basic_rates);
4724 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
0795af57
JP		 4725 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4726 print_mac(mac, rxon->node_addr));
4727 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4728 print_mac(mac, rxon->bssid_addr));
b481de9c
ZY		 4729 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4730}
4731#endif
4732
4733static void iwl_enable_interrupts(struct iwl_priv *priv)
4734{
4735 IWL_DEBUG_ISR("Enabling interrupts\n");
4736 set_bit(STATUS_INT_ENABLED, &priv->status);
4737 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4738}
4739
4740static inline void iwl_disable_interrupts(struct iwl_priv *priv)
4741{
4742 clear_bit(STATUS_INT_ENABLED, &priv->status);
4743
4744 /* disable interrupts from uCode/NIC to host */
4745 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
4746
4747 /* acknowledge/clear/reset any interrupts still pending
4748 * from uCode or flow handler (Rx/Tx DMA) */
4749 iwl_write32(priv, CSR_INT, 0xffffffff);
4750 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4751 IWL_DEBUG_ISR("Disabled interrupts\n");
4752}
4753
4754static const char *desc_lookup(int i)
4755{
4756 switch (i) {
4757 case 1:
4758 return "FAIL";
4759 case 2:
4760 return "BAD_PARAM";
4761 case 3:
4762 return "BAD_CHECKSUM";
4763 case 4:
4764 return "NMI_INTERRUPT";
4765 case 5:
4766 return "SYSASSERT";
4767 case 6:
4768 return "FATAL_ERROR";
4769 }
4770
4771 return "UNKNOWN";
4772}
4773
4774#define ERROR_START_OFFSET (1 * sizeof(u32))
4775#define ERROR_ELEM_SIZE (7 * sizeof(u32))
4776
4777static void iwl_dump_nic_error_log(struct iwl_priv *priv)
4778{
4779 u32 data2, line;
4780 u32 desc, time, count, base, data1;
4781 u32 blink1, blink2, ilink1, ilink2;
4782 int rc;
4783
4784 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4785
4786 if (!iwl_hw_valid_rtc_data_addr(base)) {
4787 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4788 return;
4789 }
4790
4791 rc = iwl_grab_restricted_access(priv);
4792 if (rc) {
4793 IWL_WARNING("Can not read from adapter at this time.\n");
4794 return;
4795 }
4796
4797 count = iwl_read_restricted_mem(priv, base);
4798
4799 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4800 IWL_ERROR("Start IWL Error Log Dump:\n");
4801 IWL_ERROR("Status: 0x%08lX, Config: %08X count: %d\n",
4802 priv->status, priv->config, count);
4803 }
4804
4805 desc = iwl_read_restricted_mem(priv, base + 1 * sizeof(u32));
4806 blink1 = iwl_read_restricted_mem(priv, base + 3 * sizeof(u32));
4807 blink2 = iwl_read_restricted_mem(priv, base + 4 * sizeof(u32));
4808 ilink1 = iwl_read_restricted_mem(priv, base + 5 * sizeof(u32));
4809 ilink2 = iwl_read_restricted_mem(priv, base + 6 * sizeof(u32));
4810 data1 = iwl_read_restricted_mem(priv, base + 7 * sizeof(u32));
4811 data2 = iwl_read_restricted_mem(priv, base + 8 * sizeof(u32));
4812 line = iwl_read_restricted_mem(priv, base + 9 * sizeof(u32));
4813 time = iwl_read_restricted_mem(priv, base + 11 * sizeof(u32));
4814
4815 IWL_ERROR("Desc Time "
4816 "data1 data2 line\n");
4817 IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
4818 desc_lookup(desc), desc, time, data1, data2, line);
4819 IWL_ERROR("blink1 blink2 ilink1 ilink2\n");
4820 IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
4821 ilink1, ilink2);
4822
4823 iwl_release_restricted_access(priv);
4824}
4825
4826#define EVENT_START_OFFSET (4 * sizeof(u32))
4827
4828/**
4829 * iwl_print_event_log - Dump error event log to syslog
4830 *
4831 * NOTE: Must be called with iwl_grab_restricted_access() already obtained!
4832 */
4833static void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
4834 u32 num_events, u32 mode)
4835{
4836 u32 i;
4837 u32 base; /* SRAM byte address of event log header */
4838 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4839 u32 ptr; /* SRAM byte address of log data */
4840 u32 ev, time, data; /* event log data */
4841
4842 if (num_events == 0)
4843 return;
4844
4845 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4846
4847 if (mode == 0)
4848 event_size = 2 * sizeof(u32);
4849 else
4850 event_size = 3 * sizeof(u32);
4851
4852 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4853
4854 /* "time" is actually "data" for mode 0 (no timestamp).
4855 * place event id # at far right for easier visual parsing. */
4856 for (i = 0; i < num_events; i++) {
4857 ev = iwl_read_restricted_mem(priv, ptr);
4858 ptr += sizeof(u32);
4859 time = iwl_read_restricted_mem(priv, ptr);
4860 ptr += sizeof(u32);
4861 if (mode == 0)
4862 IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4863 else {
4864 data = iwl_read_restricted_mem(priv, ptr);
4865 ptr += sizeof(u32);
4866 IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4867 }
4868 }
4869}
4870
4871static void iwl_dump_nic_event_log(struct iwl_priv *priv)
4872{
4873 int rc;
4874 u32 base; /* SRAM byte address of event log header */
4875 u32 capacity; /* event log capacity in # entries */
4876 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
4877 u32 num_wraps; /* # times uCode wrapped to top of log */
4878 u32 next_entry; /* index of next entry to be written by uCode */
4879 u32 size; /* # entries that we'll print */
4880
4881 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4882 if (!iwl_hw_valid_rtc_data_addr(base)) {
4883 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4884 return;
4885 }
4886
4887 rc = iwl_grab_restricted_access(priv);
4888 if (rc) {
4889 IWL_WARNING("Can not read from adapter at this time.\n");
4890 return;
4891 }
4892
4893 /* event log header */
4894 capacity = iwl_read_restricted_mem(priv, base);
4895 mode = iwl_read_restricted_mem(priv, base + (1 * sizeof(u32)));
4896 num_wraps = iwl_read_restricted_mem(priv, base + (2 * sizeof(u32)));
4897 next_entry = iwl_read_restricted_mem(priv, base + (3 * sizeof(u32)));
4898
4899 size = num_wraps ? capacity : next_entry;
4900
4901 /* bail out if nothing in log */
4902 if (size == 0) {
4903 IWL_ERROR("Start IPW Event Log Dump: nothing in log\n");
4904 iwl_release_restricted_access(priv);
4905 return;
4906 }
4907
4908 IWL_ERROR("Start IPW Event Log Dump: display count %d, wraps %d\n",
4909 size, num_wraps);
4910
4911 /* if uCode has wrapped back to top of log, start at the oldest entry,
4912 * i.e the next one that uCode would fill. */
4913 if (num_wraps)
4914 iwl_print_event_log(priv, next_entry,
4915 capacity - next_entry, mode);
4916
4917 /* (then/else) start at top of log */
4918 iwl_print_event_log(priv, 0, next_entry, mode);
4919
4920 iwl_release_restricted_access(priv);
4921}
4922
4923/**
4924 * iwl_irq_handle_error - called for HW or SW error interrupt from card
4925 */
4926static void iwl_irq_handle_error(struct iwl_priv *priv)
4927{
4928 /* Set the FW error flag -- cleared on iwl_down */
4929 set_bit(STATUS_FW_ERROR, &priv->status);
4930
4931 /* Cancel currently queued command. */
4932 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4933
4934#ifdef CONFIG_IWLWIFI_DEBUG
4935 if (iwl_debug_level & IWL_DL_FW_ERRORS) {
4936 iwl_dump_nic_error_log(priv);
4937 iwl_dump_nic_event_log(priv);
4938 iwl_print_rx_config_cmd(&priv->staging_rxon);
4939 }
4940#endif
4941
4942 wake_up_interruptible(&priv->wait_command_queue);
4943
4944 /* Keep the restart process from trying to send host
4945 * commands by clearing the INIT status bit */
4946 clear_bit(STATUS_READY, &priv->status);
4947
4948 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4949 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
4950 "Restarting adapter due to uCode error.\n");
4951
4952 if (iwl_is_associated(priv)) {
4953 memcpy(&priv->recovery_rxon, &priv->active_rxon,
4954 sizeof(priv->recovery_rxon));
4955 priv->error_recovering = 1;
4956 }
4957 queue_work(priv->workqueue, &priv->restart);
4958 }
4959}
4960
4961static void iwl_error_recovery(struct iwl_priv *priv)
4962{
4963 unsigned long flags;
4964
4965 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
4966 sizeof(priv->staging_rxon));
4967 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4968 iwl_commit_rxon(priv);
4969
4970 iwl_rxon_add_station(priv, priv->bssid, 1);
4971
4972 spin_lock_irqsave(&priv->lock, flags);
4973 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
4974 priv->error_recovering = 0;
4975 spin_unlock_irqrestore(&priv->lock, flags);
4976}
4977
4978static void iwl_irq_tasklet(struct iwl_priv *priv)
4979{
4980 u32 inta, handled = 0;
4981 u32 inta_fh;
4982 unsigned long flags;
4983#ifdef CONFIG_IWLWIFI_DEBUG
4984 u32 inta_mask;
4985#endif
4986
4987 spin_lock_irqsave(&priv->lock, flags);
4988
4989 /* Ack/clear/reset pending uCode interrupts.
4990 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4991 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
4992 inta = iwl_read32(priv, CSR_INT);
4993 iwl_write32(priv, CSR_INT, inta);
4994
4995 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4996 * Any new interrupts that happen after this, either while we're
4997 * in this tasklet, or later, will show up in next ISR/tasklet. */
4998 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4999 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
5000
5001#ifdef CONFIG_IWLWIFI_DEBUG
5002 if (iwl_debug_level & IWL_DL_ISR) {
5003 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
5004 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5005 inta, inta_mask, inta_fh);
5006 }
5007#endif
5008
5009 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
5010 * atomic, make sure that inta covers all the interrupts that
5011 * we've discovered, even if FH interrupt came in just after
5012 * reading CSR_INT. */
5013 if (inta_fh & CSR_FH_INT_RX_MASK)
5014 inta |= CSR_INT_BIT_FH_RX;
5015 if (inta_fh & CSR_FH_INT_TX_MASK)
5016 inta |= CSR_INT_BIT_FH_TX;
5017
5018 /* Now service all interrupt bits discovered above. */
5019 if (inta & CSR_INT_BIT_HW_ERR) {
5020 IWL_ERROR("Microcode HW error detected. Restarting.\n");
5021
5022 /* Tell the device to stop sending interrupts */
5023 iwl_disable_interrupts(priv);
5024
5025 iwl_irq_handle_error(priv);
5026
5027 handled |= CSR_INT_BIT_HW_ERR;
5028
5029 spin_unlock_irqrestore(&priv->lock, flags);
5030
5031 return;
5032 }
5033
5034#ifdef CONFIG_IWLWIFI_DEBUG
5035 if (iwl_debug_level & (IWL_DL_ISR)) {
5036 /* NIC fires this, but we don't use it, redundant with WAKEUP */
5037 if (inta & CSR_INT_BIT_MAC_CLK_ACTV)
5038 IWL_DEBUG_ISR("Microcode started or stopped.\n");
5039
5040 /* Alive notification via Rx interrupt will do the real work */
5041 if (inta & CSR_INT_BIT_ALIVE)
5042 IWL_DEBUG_ISR("Alive interrupt\n");
5043 }
5044#endif
5045 /* Safely ignore these bits for debug checks below */
5046 inta &= ~(CSR_INT_BIT_MAC_CLK_ACTV | CSR_INT_BIT_ALIVE);
5047
5048 /* HW RF KILL switch toggled (4965 only) */
5049 if (inta & CSR_INT_BIT_RF_KILL) {
5050 int hw_rf_kill = 0;
5051 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
5052 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
5053 hw_rf_kill = 1;
5054
5055 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
5056 "RF_KILL bit toggled to %s.\n",
5057 hw_rf_kill ? "disable radio":"enable radio");
5058
5059 /* Queue restart only if RF_KILL switch was set to "kill"
5060 * when we loaded driver, and is now set to "enable".
5061 * After we're Alive, RF_KILL gets handled by
5062 * iwl_rx_card_state_notif() */
5063 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
5064 queue_work(priv->workqueue, &priv->restart);
5065
5066 handled |= CSR_INT_BIT_RF_KILL;
5067 }
5068
5069 /* Chip got too hot and stopped itself (4965 only) */
5070 if (inta & CSR_INT_BIT_CT_KILL) {
5071 IWL_ERROR("Microcode CT kill error detected.\n");
5072 handled |= CSR_INT_BIT_CT_KILL;
5073 }
5074
5075 /* Error detected by uCode */
5076 if (inta & CSR_INT_BIT_SW_ERR) {
5077 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
5078 inta);
5079 iwl_irq_handle_error(priv);
5080 handled |= CSR_INT_BIT_SW_ERR;
5081 }
5082
5083 /* uCode wakes up after power-down sleep */
5084 if (inta & CSR_INT_BIT_WAKEUP) {
5085 IWL_DEBUG_ISR("Wakeup interrupt\n");
5086 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
5087 iwl_tx_queue_update_write_ptr(priv, &priv->txq[0]);
5088 iwl_tx_queue_update_write_ptr(priv, &priv->txq[1]);
5089 iwl_tx_queue_update_write_ptr(priv, &priv->txq[2]);
5090 iwl_tx_queue_update_write_ptr(priv, &priv->txq[3]);
5091 iwl_tx_queue_update_write_ptr(priv, &priv->txq[4]);
5092 iwl_tx_queue_update_write_ptr(priv, &priv->txq[5]);
5093
5094 handled |= CSR_INT_BIT_WAKEUP;
5095 }
5096
5097 /* All uCode command responses, including Tx command responses,
5098 * Rx "responses" (frame-received notification), and other
5099 * notifications from uCode come through here*/
5100 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
5101 iwl_rx_handle(priv);
5102 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
5103 }
5104
5105 if (inta & CSR_INT_BIT_FH_TX) {
5106 IWL_DEBUG_ISR("Tx interrupt\n");
5107 handled |= CSR_INT_BIT_FH_TX;
5108 }
5109
5110 if (inta & ~handled)
5111 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
5112
5113 if (inta & ~CSR_INI_SET_MASK) {
5114 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
5115 inta & ~CSR_INI_SET_MASK);
5116 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
5117 }
5118
5119 /* Re-enable all interrupts */
5120 iwl_enable_interrupts(priv);
5121
5122#ifdef CONFIG_IWLWIFI_DEBUG
5123 if (iwl_debug_level & (IWL_DL_ISR)) {
5124 inta = iwl_read32(priv, CSR_INT);
5125 inta_mask = iwl_read32(priv, CSR_INT_MASK);
5126 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
5127 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
5128 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
5129 }
5130#endif
5131 spin_unlock_irqrestore(&priv->lock, flags);
5132}
5133
5134static irqreturn_t iwl_isr(int irq, void *data)
5135{
5136 struct iwl_priv *priv = data;
5137 u32 inta, inta_mask;
5138 u32 inta_fh;
5139 if (!priv)
5140 return IRQ_NONE;
5141
5142 spin_lock(&priv->lock);
5143
5144 /* Disable (but don't clear!) interrupts here to avoid
5145 * back-to-back ISRs and sporadic interrupts from our NIC.
5146 * If we have something to service, the tasklet will re-enable ints.
5147 * If we *don't* have something, we'll re-enable before leaving here. */
5148 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
5149 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
5150
5151 /* Discover which interrupts are active/pending */
5152 inta = iwl_read32(priv, CSR_INT);
5153 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
5154
5155 /* Ignore interrupt if there's nothing in NIC to service.
5156 * This may be due to IRQ shared with another device,
5157 * or due to sporadic interrupts thrown from our NIC. */
5158 if (!inta && !inta_fh) {
5159 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
5160 goto none;
5161 }
5162
5163 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
5164 /* Hardware disappeared */
5165 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
5166 goto none;
5167 }
5168
5169 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5170 inta, inta_mask, inta_fh);
5171
5172 /* iwl_irq_tasklet() will service interrupts and re-enable them */
5173 tasklet_schedule(&priv->irq_tasklet);
5174 spin_unlock(&priv->lock);
5175
5176 return IRQ_HANDLED;
5177
5178 none:
5179 /* re-enable interrupts here since we don't have anything to service. */
5180 iwl_enable_interrupts(priv);
5181 spin_unlock(&priv->lock);
5182 return IRQ_NONE;
5183}
5184
5185/************************** EEPROM BANDS ****************************
5186 *
5187 * The iwl_eeprom_band definitions below provide the mapping from the
5188 * EEPROM contents to the specific channel number supported for each
5189 * band.
5190 *
5191 * For example, iwl_priv->eeprom.band_3_channels[4] from the band_3
5192 * definition below maps to physical channel 42 in the 5.2GHz spectrum.
5193 * The specific geography and calibration information for that channel
5194 * is contained in the eeprom map itself.
5195 *
5196 * During init, we copy the eeprom information and channel map
5197 * information into priv->channel_info_24/52 and priv->channel_map_24/52
5198 *
5199 * channel_map_24/52 provides the index in the channel_info array for a
5200 * given channel. We have to have two separate maps as there is channel
5201 * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
5202 * band_2
5203 *
5204 * A value of 0xff stored in the channel_map indicates that the channel
5205 * is not supported by the hardware at all.
5206 *
5207 * A value of 0xfe in the channel_map indicates that the channel is not
5208 * valid for Tx with the current hardware. This means that
5209 * while the system can tune and receive on a given channel, it may not
5210 * be able to associate or transmit any frames on that
5211 * channel. There is no corresponding channel information for that
5212 * entry.
5213 *
5214 *********************************************************************/
5215
5216/* 2.4 GHz */
5217static const u8 iwl_eeprom_band_1[14] = {
5218 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
5219};
5220
5221/* 5.2 GHz bands */
5222static const u8 iwl_eeprom_band_2[] = {
5223 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
5224};
5225
5226static const u8 iwl_eeprom_band_3[] = { /* 5205-5320MHz */
5227 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
5228};
5229
5230static const u8 iwl_eeprom_band_4[] = { /* 5500-5700MHz */
5231 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
5232};
5233
5234static const u8 iwl_eeprom_band_5[] = { /* 5725-5825MHz */
5235 145, 149, 153, 157, 161, 165
5236};
5237
5238static u8 iwl_eeprom_band_6[] = { /* 2.4 FAT channel */
5239 1, 2, 3, 4, 5, 6, 7
5240};
5241
5242static u8 iwl_eeprom_band_7[] = { /* 5.2 FAT channel */
5243 36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157
5244};
5245
5246static void iwl_init_band_reference(const struct iwl_priv *priv, int band,
5247 int *eeprom_ch_count,
5248 const struct iwl_eeprom_channel
5249 **eeprom_ch_info,
5250 const u8 **eeprom_ch_index)
5251{
5252 switch (band) {
5253 case 1: /* 2.4GHz band */
5254 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_1);
5255 *eeprom_ch_info = priv->eeprom.band_1_channels;
5256 *eeprom_ch_index = iwl_eeprom_band_1;
5257 break;
5258 case 2: /* 5.2GHz band */
5259 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_2);
5260 *eeprom_ch_info = priv->eeprom.band_2_channels;
5261 *eeprom_ch_index = iwl_eeprom_band_2;
5262 break;
5263 case 3: /* 5.2GHz band */
5264 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_3);
5265 *eeprom_ch_info = priv->eeprom.band_3_channels;
5266 *eeprom_ch_index = iwl_eeprom_band_3;
5267 break;
5268 case 4: /* 5.2GHz band */
5269 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_4);
5270 *eeprom_ch_info = priv->eeprom.band_4_channels;
5271 *eeprom_ch_index = iwl_eeprom_band_4;
5272 break;
5273 case 5: /* 5.2GHz band */
5274 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_5);
5275 *eeprom_ch_info = priv->eeprom.band_5_channels;
5276 *eeprom_ch_index = iwl_eeprom_band_5;
5277 break;
5278 case 6:
5279 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_6);
5280 *eeprom_ch_info = priv->eeprom.band_24_channels;
5281 *eeprom_ch_index = iwl_eeprom_band_6;
5282 break;
5283 case 7:
5284 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_7);
5285 *eeprom_ch_info = priv->eeprom.band_52_channels;
5286 *eeprom_ch_index = iwl_eeprom_band_7;
5287 break;
5288 default:
5289 BUG();
5290 return;
5291 }
5292}
5293
5294const struct iwl_channel_info *iwl_get_channel_info(const struct iwl_priv *priv,
5295 int phymode, u16 channel)
5296{
5297 int i;
5298
5299 switch (phymode) {
5300 case MODE_IEEE80211A:
5301 for (i = 14; i < priv->channel_count; i++) {
5302 if (priv->channel_info[i].channel == channel)
5303 return &priv->channel_info[i];
5304 }
5305 break;
5306
5307 case MODE_IEEE80211B:
5308 case MODE_IEEE80211G:
5309 if (channel >= 1 && channel <= 14)
5310 return &priv->channel_info[channel - 1];
5311 break;
5312
5313 }
5314
5315 return NULL;
5316}
5317
5318#define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
5319 ? # x " " : "")
5320
5321static int iwl_init_channel_map(struct iwl_priv *priv)
5322{
5323 int eeprom_ch_count = 0;
5324 const u8 *eeprom_ch_index = NULL;
5325 const struct iwl_eeprom_channel *eeprom_ch_info = NULL;
5326 int band, ch;
5327 struct iwl_channel_info *ch_info;
5328
5329 if (priv->channel_count) {
5330 IWL_DEBUG_INFO("Channel map already initialized.\n");
5331 return 0;
5332 }
5333
5334 if (priv->eeprom.version < 0x2f) {
5335 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
5336 priv->eeprom.version);
5337 return -EINVAL;
5338 }
5339
5340 IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
5341
5342 priv->channel_count =
5343 ARRAY_SIZE(iwl_eeprom_band_1) +
5344 ARRAY_SIZE(iwl_eeprom_band_2) +
5345 ARRAY_SIZE(iwl_eeprom_band_3) +
5346 ARRAY_SIZE(iwl_eeprom_band_4) +
5347 ARRAY_SIZE(iwl_eeprom_band_5);
5348
5349 IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
5350
5351 priv->channel_info = kzalloc(sizeof(struct iwl_channel_info) *
5352 priv->channel_count, GFP_KERNEL);
5353 if (!priv->channel_info) {
5354 IWL_ERROR("Could not allocate channel_info\n");
5355 priv->channel_count = 0;
5356 return -ENOMEM;
5357 }
5358
5359 ch_info = priv->channel_info;
5360
5361 /* Loop through the 5 EEPROM bands adding them in order to the
5362 * channel map we maintain (that contains additional information than
5363 * what just in the EEPROM) */
5364 for (band = 1; band <= 5; band++) {
5365
5366 iwl_init_band_reference(priv, band, &eeprom_ch_count,
5367 &eeprom_ch_info, &eeprom_ch_index);
5368
5369 /* Loop through each band adding each of the channels */
5370 for (ch = 0; ch < eeprom_ch_count; ch++) {
5371 ch_info->channel = eeprom_ch_index[ch];
5372 ch_info->phymode = (band == 1) ? MODE_IEEE80211B :
5373 MODE_IEEE80211A;
5374
5375 /* permanently store EEPROM's channel regulatory flags
5376 * and max power in channel info database. */
5377 ch_info->eeprom = eeprom_ch_info[ch];
5378
5379 /* Copy the run-time flags so they are there even on
5380 * invalid channels */
5381 ch_info->flags = eeprom_ch_info[ch].flags;
5382
5383 if (!(is_channel_valid(ch_info))) {
5384 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
5385 "No traffic\n",
5386 ch_info->channel,
5387 ch_info->flags,
5388 is_channel_a_band(ch_info) ?
5389 "5.2" : "2.4");
5390 ch_info++;
5391 continue;
5392 }
5393
5394 /* Initialize regulatory-based run-time data */
5395 ch_info->max_power_avg = ch_info->curr_txpow =
5396 eeprom_ch_info[ch].max_power_avg;
5397 ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
5398 ch_info->min_power = 0;
5399
5400 IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
5401 " %ddBm): Ad-Hoc %ssupported\n",
5402 ch_info->channel,
5403 is_channel_a_band(ch_info) ?
5404 "5.2" : "2.4",
5405 CHECK_AND_PRINT(IBSS),
5406 CHECK_AND_PRINT(ACTIVE),
5407 CHECK_AND_PRINT(RADAR),
5408 CHECK_AND_PRINT(WIDE),
5409 CHECK_AND_PRINT(NARROW),
5410 CHECK_AND_PRINT(DFS),
5411 eeprom_ch_info[ch].flags,
5412 eeprom_ch_info[ch].max_power_avg,
5413 ((eeprom_ch_info[ch].
5414 flags & EEPROM_CHANNEL_IBSS)
5415 && !(eeprom_ch_info[ch].
5416 flags & EEPROM_CHANNEL_RADAR))
5417 ? "" : "not ");
5418
5419 /* Set the user_txpower_limit to the highest power
5420 * supported by any channel */
5421 if (eeprom_ch_info[ch].max_power_avg >
5422 priv->user_txpower_limit)
5423 priv->user_txpower_limit =
5424 eeprom_ch_info[ch].max_power_avg;
5425
5426 ch_info++;
5427 }
5428 }
5429
5430 for (band = 6; band <= 7; band++) {
5431 int phymode;
5432 u8 fat_extension_chan;
5433
5434 iwl_init_band_reference(priv, band, &eeprom_ch_count,
5435 &eeprom_ch_info, &eeprom_ch_index);
5436
5437 phymode = (band == 6) ? MODE_IEEE80211B : MODE_IEEE80211A;
5438 /* Loop through each band adding each of the channels */
5439 for (ch = 0; ch < eeprom_ch_count; ch++) {
5440
5441 if ((band == 6) &&
5442 ((eeprom_ch_index[ch] == 5) ||
5443 (eeprom_ch_index[ch] == 6) ||
5444 (eeprom_ch_index[ch] == 7)))
5445 fat_extension_chan = HT_IE_EXT_CHANNEL_MAX;
5446 else
5447 fat_extension_chan = HT_IE_EXT_CHANNEL_ABOVE;
5448
5449 iwl4965_set_fat_chan_info(priv, phymode,
5450 eeprom_ch_index[ch],
5451 &(eeprom_ch_info[ch]),
5452 fat_extension_chan);
5453
5454 iwl4965_set_fat_chan_info(priv, phymode,
5455 (eeprom_ch_index[ch] + 4),
5456 &(eeprom_ch_info[ch]),
5457 HT_IE_EXT_CHANNEL_BELOW);
5458 }
5459 }
5460
5461 return 0;
5462}
5463
5464/* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
5465 * sending probe req. This should be set long enough to hear probe responses
5466 * from more than one AP. */
5467#define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
5468#define IWL_ACTIVE_DWELL_TIME_52 (10)
5469
5470/* For faster active scanning, scan will move to the next channel if fewer than
5471 * PLCP_QUIET_THRESH packets are heard on this channel within
5472 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
5473 * time if it's a quiet channel (nothing responded to our probe, and there's
5474 * no other traffic).
5475 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
5476#define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
5477#define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
5478
5479/* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
5480 * Must be set longer than active dwell time.
5481 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
5482#define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
5483#define IWL_PASSIVE_DWELL_TIME_52 (10)
5484#define IWL_PASSIVE_DWELL_BASE (100)
5485#define IWL_CHANNEL_TUNE_TIME 5
5486
5487static inline u16 iwl_get_active_dwell_time(struct iwl_priv *priv, int phymode)
5488{
5489 if (phymode == MODE_IEEE80211A)
5490 return IWL_ACTIVE_DWELL_TIME_52;
5491 else
5492 return IWL_ACTIVE_DWELL_TIME_24;
5493}
5494
5495static u16 iwl_get_passive_dwell_time(struct iwl_priv *priv, int phymode)
5496{
5497 u16 active = iwl_get_active_dwell_time(priv, phymode);
5498 u16 passive = (phymode != MODE_IEEE80211A) ?
5499 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
5500 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
5501
5502 if (iwl_is_associated(priv)) {
5503 /* If we're associated, we clamp the maximum passive
5504 * dwell time to be 98% of the beacon interval (minus
5505 * 2 * channel tune time) */
5506 passive = priv->beacon_int;
5507 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
5508 passive = IWL_PASSIVE_DWELL_BASE;
5509 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
5510 }
5511
5512 if (passive <= active)
5513 passive = active + 1;
5514
5515 return passive;
5516}
5517
5518static int iwl_get_channels_for_scan(struct iwl_priv *priv, int phymode,
5519 u8 is_active, u8 direct_mask,
5520 struct iwl_scan_channel *scan_ch)
5521{
5522 const struct ieee80211_channel *channels = NULL;
5523 const struct ieee80211_hw_mode *hw_mode;
5524 const struct iwl_channel_info *ch_info;
5525 u16 passive_dwell = 0;
5526 u16 active_dwell = 0;
5527 int added, i;
5528
5529 hw_mode = iwl_get_hw_mode(priv, phymode);
5530 if (!hw_mode)
5531 return 0;
5532
5533 channels = hw_mode->channels;
5534
5535 active_dwell = iwl_get_active_dwell_time(priv, phymode);
5536 passive_dwell = iwl_get_passive_dwell_time(priv, phymode);
5537
5538 for (i = 0, added = 0; i < hw_mode->num_channels; i++) {
5539 if (channels[i].chan ==
5540 le16_to_cpu(priv->active_rxon.channel)) {
5541 if (iwl_is_associated(priv)) {
5542 IWL_DEBUG_SCAN
5543 ("Skipping current channel %d\n",
5544 le16_to_cpu(priv->active_rxon.channel));
5545 continue;
5546 }
5547 } else if (priv->only_active_channel)
5548 continue;
5549
5550 scan_ch->channel = channels[i].chan;
5551
5552 ch_info = iwl_get_channel_info(priv, phymode, scan_ch->channel);
5553 if (!is_channel_valid(ch_info)) {
5554 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
5555 scan_ch->channel);
5556 continue;
5557 }
5558
5559 if (!is_active || is_channel_passive(ch_info) ||
5560 !(channels[i].flag & IEEE80211_CHAN_W_ACTIVE_SCAN))
5561 scan_ch->type = 0; /* passive */
5562 else
5563 scan_ch->type = 1; /* active */
5564
5565 if (scan_ch->type & 1)
5566 scan_ch->type |= (direct_mask << 1);
5567
5568 if (is_channel_narrow(ch_info))
5569 scan_ch->type |= (1 << 7);
5570
5571 scan_ch->active_dwell = cpu_to_le16(active_dwell);
5572 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
5573
5574 /* Set power levels to defaults */
5575 scan_ch->tpc.dsp_atten = 110;
5576 /* scan_pwr_info->tpc.dsp_atten; */
5577
5578 /*scan_pwr_info->tpc.tx_gain; */
5579 if (phymode == MODE_IEEE80211A)
5580 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
5581 else {
5582 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
5583 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
5584 * power level
5585 scan_ch->tpc.tx_gain = ((1<<5) | (2 << 3)) | 3;
5586 */
5587 }
5588
5589 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
5590 scan_ch->channel,
5591 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
5592 (scan_ch->type & 1) ?
5593 active_dwell : passive_dwell);
5594
5595 scan_ch++;
5596 added++;
5597 }
5598
5599 IWL_DEBUG_SCAN("total channels to scan %d \n", added);
5600 return added;
5601}
5602
5603static void iwl_reset_channel_flag(struct iwl_priv *priv)
5604{
5605 int i, j;
5606 for (i = 0; i < 3; i++) {
5607 struct ieee80211_hw_mode *hw_mode = (void *)&priv->modes[i];
5608 for (j = 0; j < hw_mode->num_channels; j++)
5609 hw_mode->channels[j].flag = hw_mode->channels[j].val;
5610 }
5611}
5612
5613static void iwl_init_hw_rates(struct iwl_priv *priv,
5614 struct ieee80211_rate *rates)
5615{
5616 int i;
5617
5618 for (i = 0; i < IWL_RATE_COUNT; i++) {
5619 rates[i].rate = iwl_rates[i].ieee * 5;
5620 rates[i].val = i; /* Rate scaling will work on indexes */
5621 rates[i].val2 = i;
5622 rates[i].flags = IEEE80211_RATE_SUPPORTED;
5623 /* Only OFDM have the bits-per-symbol set */
5624 if ((i <= IWL_LAST_OFDM_RATE) && (i >= IWL_FIRST_OFDM_RATE))
5625 rates[i].flags |= IEEE80211_RATE_OFDM;
5626 else {
5627 /*
5628 * If CCK 1M then set rate flag to CCK else CCK_2
5629 * which is CCK | PREAMBLE2
5630 */
5631 rates[i].flags |= (iwl_rates[i].plcp == 10) ?
5632 IEEE80211_RATE_CCK : IEEE80211_RATE_CCK_2;
5633 }
5634
5635 /* Set up which ones are basic rates... */
5636 if (IWL_BASIC_RATES_MASK & (1 << i))
5637 rates[i].flags |= IEEE80211_RATE_BASIC;
5638 }
5639
5640 iwl4965_init_hw_rates(priv, rates);
5641}
5642
5643/**
5644 * iwl_init_geos - Initialize mac80211's geo/channel info based from eeprom
5645 */
5646static int iwl_init_geos(struct iwl_priv *priv)
5647{
5648 struct iwl_channel_info *ch;
5649 struct ieee80211_hw_mode *modes;
5650 struct ieee80211_channel *channels;
5651 struct ieee80211_channel *geo_ch;
5652 struct ieee80211_rate *rates;
5653 int i = 0;
5654 enum {
5655 A = 0,
5656 B = 1,
5657 G = 2,
5658 A_11N = 3,
5659 G_11N = 4,
5660 };
5661 int mode_count = 5;
5662
5663 if (priv->modes) {
5664 IWL_DEBUG_INFO("Geography modes already initialized.\n");
5665 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5666 return 0;
5667 }
5668
5669 modes = kzalloc(sizeof(struct ieee80211_hw_mode) * mode_count,
5670 GFP_KERNEL);
5671 if (!modes)
5672 return -ENOMEM;
5673
5674 channels = kzalloc(sizeof(struct ieee80211_channel) *
5675 priv->channel_count, GFP_KERNEL);
5676 if (!channels) {
5677 kfree(modes);
5678 return -ENOMEM;
5679 }
5680
5681 rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_MAX_RATES + 1)),
5682 GFP_KERNEL);
5683 if (!rates) {
5684 kfree(modes);
5685 kfree(channels);
5686 return -ENOMEM;
5687 }
5688
5689 /* 0 = 802.11a
5690 * 1 = 802.11b
5691 * 2 = 802.11g
5692 */
5693
5694 /* 5.2GHz channels start after the 2.4GHz channels */
5695 modes[A].mode = MODE_IEEE80211A;
5696 modes[A].channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
5697 modes[A].rates = rates;
5698 modes[A].num_rates = 8; /* just OFDM */
5699 modes[A].rates = &rates[4];
5700 modes[A].num_channels = 0;
5701
5702 modes[B].mode = MODE_IEEE80211B;
5703 modes[B].channels = channels;
5704 modes[B].rates = rates;
5705 modes[B].num_rates = 4; /* just CCK */
5706 modes[B].num_channels = 0;
5707
5708 modes[G].mode = MODE_IEEE80211G;
5709 modes[G].channels = channels;
5710 modes[G].rates = rates;
5711 modes[G].num_rates = 12; /* OFDM & CCK */
5712 modes[G].num_channels = 0;
5713
5714 modes[G_11N].mode = MODE_IEEE80211G;
5715 modes[G_11N].channels = channels;
5716 modes[G_11N].num_rates = 13; /* OFDM & CCK */
5717 modes[G_11N].rates = rates;
5718 modes[G_11N].num_channels = 0;
5719
5720 modes[A_11N].mode = MODE_IEEE80211A;
5721 modes[A_11N].channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
5722 modes[A_11N].rates = &rates[4];
5723 modes[A_11N].num_rates = 9; /* just OFDM */
5724 modes[A_11N].num_channels = 0;
5725
5726 priv->ieee_channels = channels;
5727 priv->ieee_rates = rates;
5728
5729 iwl_init_hw_rates(priv, rates);
5730
5731 for (i = 0, geo_ch = channels; i < priv->channel_count; i++) {
5732 ch = &priv->channel_info[i];
5733
5734 if (!is_channel_valid(ch)) {
5735 IWL_DEBUG_INFO("Channel %d [%sGHz] is restricted -- "
5736 "skipping.\n",
5737 ch->channel, is_channel_a_band(ch) ?
5738 "5.2" : "2.4");
5739 continue;
5740 }
5741
5742 if (is_channel_a_band(ch)) {
5743 geo_ch = &modes[A].channels[modes[A].num_channels++];
5744 modes[A_11N].num_channels++;
5745 } else {
5746 geo_ch = &modes[B].channels[modes[B].num_channels++];
5747 modes[G].num_channels++;
5748 modes[G_11N].num_channels++;
5749 }
5750
5751 geo_ch->freq = ieee80211chan2mhz(ch->channel);
5752 geo_ch->chan = ch->channel;
5753 geo_ch->power_level = ch->max_power_avg;
5754 geo_ch->antenna_max = 0xff;
5755
5756 if (is_channel_valid(ch)) {
5757 geo_ch->flag = IEEE80211_CHAN_W_SCAN;
5758 if (ch->flags & EEPROM_CHANNEL_IBSS)
5759 geo_ch->flag |= IEEE80211_CHAN_W_IBSS;
5760
5761 if (ch->flags & EEPROM_CHANNEL_ACTIVE)
5762 geo_ch->flag |= IEEE80211_CHAN_W_ACTIVE_SCAN;
5763
5764 if (ch->flags & EEPROM_CHANNEL_RADAR)
5765 geo_ch->flag |= IEEE80211_CHAN_W_RADAR_DETECT;
5766
5767 if (ch->max_power_avg > priv->max_channel_txpower_limit)
5768 priv->max_channel_txpower_limit =
5769 ch->max_power_avg;
5770 }
5771
5772 geo_ch->val = geo_ch->flag;
5773 }
5774
5775 if ((modes[A].num_channels == 0) && priv->is_abg) {
5776 printk(KERN_INFO DRV_NAME
5777 ": Incorrectly detected BG card as ABG. Please send "
5778 "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5779 priv->pci_dev->device, priv->pci_dev->subsystem_device);
5780 priv->is_abg = 0;
5781 }
5782
5783 printk(KERN_INFO DRV_NAME
5784 ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5785 modes[G].num_channels, modes[A].num_channels);
5786
5787 /*
5788 * NOTE: We register these in preference of order -- the
5789 * stack doesn't currently (as of 7.0.6 / Apr 24 '07) pick
5790 * a phymode based on rates or AP capabilities but seems to
5791 * configure it purely on if the channel being configured
5792 * is supported by a mode -- and the first match is taken
5793 */
5794
5795 if (modes[G].num_channels)
5796 ieee80211_register_hwmode(priv->hw, &modes[G]);
5797 if (modes[B].num_channels)
5798 ieee80211_register_hwmode(priv->hw, &modes[B]);
5799 if (modes[A].num_channels)
5800 ieee80211_register_hwmode(priv->hw, &modes[A]);
5801
5802 priv->modes = modes;
5803 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5804
5805 return 0;
5806}
5807
5808/******************************************************************************
5809 *
5810 * uCode download functions
5811 *
5812 ******************************************************************************/
5813
5814static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
5815{
5816 if (priv->ucode_code.v_addr != NULL) {
5817 pci_free_consistent(priv->pci_dev,
5818 priv->ucode_code.len,
5819 priv->ucode_code.v_addr,
5820 priv->ucode_code.p_addr);
5821 priv->ucode_code.v_addr = NULL;
5822 }
5823 if (priv->ucode_data.v_addr != NULL) {
5824 pci_free_consistent(priv->pci_dev,
5825 priv->ucode_data.len,
5826 priv->ucode_data.v_addr,
5827 priv->ucode_data.p_addr);
5828 priv->ucode_data.v_addr = NULL;
5829 }
5830 if (priv->ucode_data_backup.v_addr != NULL) {
5831 pci_free_consistent(priv->pci_dev,
5832 priv->ucode_data_backup.len,
5833 priv->ucode_data_backup.v_addr,
5834 priv->ucode_data_backup.p_addr);
5835 priv->ucode_data_backup.v_addr = NULL;
5836 }
5837 if (priv->ucode_init.v_addr != NULL) {
5838 pci_free_consistent(priv->pci_dev,
5839 priv->ucode_init.len,
5840 priv->ucode_init.v_addr,
5841 priv->ucode_init.p_addr);
5842 priv->ucode_init.v_addr = NULL;
5843 }
5844 if (priv->ucode_init_data.v_addr != NULL) {
5845 pci_free_consistent(priv->pci_dev,
5846 priv->ucode_init_data.len,
5847 priv->ucode_init_data.v_addr,
5848 priv->ucode_init_data.p_addr);
5849 priv->ucode_init_data.v_addr = NULL;
5850 }
5851 if (priv->ucode_boot.v_addr != NULL) {
5852 pci_free_consistent(priv->pci_dev,
5853 priv->ucode_boot.len,
5854 priv->ucode_boot.v_addr,
5855 priv->ucode_boot.p_addr);
5856 priv->ucode_boot.v_addr = NULL;
5857 }
5858}
5859
5860/**
5861 * iwl_verify_inst_full - verify runtime uCode image in card vs. host,
5862 * looking at all data.
5863 */
5864static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 * image, u32 len)
5865{
5866 u32 val;
5867 u32 save_len = len;
5868 int rc = 0;
5869 u32 errcnt;
5870
5871 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5872
5873 rc = iwl_grab_restricted_access(priv);
5874 if (rc)
5875 return rc;
5876
5877 iwl_write_restricted(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
5878
5879 errcnt = 0;
5880 for (; len > 0; len -= sizeof(u32), image++) {
5881 /* read data comes through single port, auto-incr addr */
5882 /* NOTE: Use the debugless read so we don't flood kernel log
5883 * if IWL_DL_IO is set */
5884 val = _iwl_read_restricted(priv, HBUS_TARG_MEM_RDAT);
5885 if (val != le32_to_cpu(*image)) {
5886 IWL_ERROR("uCode INST section is invalid at "
5887 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5888 save_len - len, val, le32_to_cpu(*image));
5889 rc = -EIO;
5890 errcnt++;
5891 if (errcnt >= 20)
5892 break;
5893 }
5894 }
5895
5896 iwl_release_restricted_access(priv);
5897
5898 if (!errcnt)
5899 IWL_DEBUG_INFO
5900 ("ucode image in INSTRUCTION memory is good\n");
5901
5902 return rc;
5903}
5904
5905
5906/**
5907 * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
5908 * using sample data 100 bytes apart. If these sample points are good,
5909 * it's a pretty good bet that everything between them is good, too.
5910 */
5911static int iwl_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
5912{
5913 u32 val;
5914 int rc = 0;
5915 u32 errcnt = 0;
5916 u32 i;
5917
5918 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5919
5920 rc = iwl_grab_restricted_access(priv);
5921 if (rc)
5922 return rc;
5923
5924 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
5925 /* read data comes through single port, auto-incr addr */
5926 /* NOTE: Use the debugless read so we don't flood kernel log
5927 * if IWL_DL_IO is set */
5928 iwl_write_restricted(priv, HBUS_TARG_MEM_RADDR,
5929 i + RTC_INST_LOWER_BOUND);
5930 val = _iwl_read_restricted(priv, HBUS_TARG_MEM_RDAT);
5931 if (val != le32_to_cpu(*image)) {
5932#if 0 /* Enable this if you want to see details */
5933 IWL_ERROR("uCode INST section is invalid at "
5934 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5935 i, val, *image);
5936#endif
5937 rc = -EIO;
5938 errcnt++;
5939 if (errcnt >= 3)
5940 break;
5941 }
5942 }
5943
5944 iwl_release_restricted_access(priv);
5945
5946 return rc;
5947}
5948
5949
5950/**
5951 * iwl_verify_ucode - determine which instruction image is in SRAM,
5952 * and verify its contents
5953 */
5954static int iwl_verify_ucode(struct iwl_priv *priv)
5955{
5956 __le32 *image;
5957 u32 len;
5958 int rc = 0;
5959
5960 /* Try bootstrap */
5961 image = (__le32 *)priv->ucode_boot.v_addr;
5962 len = priv->ucode_boot.len;
5963 rc = iwl_verify_inst_sparse(priv, image, len);
5964 if (rc == 0) {
5965 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5966 return 0;
5967 }
5968
5969 /* Try initialize */
5970 image = (__le32 *)priv->ucode_init.v_addr;
5971 len = priv->ucode_init.len;
5972 rc = iwl_verify_inst_sparse(priv, image, len);
5973 if (rc == 0) {
5974 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5975 return 0;
5976 }
5977
5978 /* Try runtime/protocol */
5979 image = (__le32 *)priv->ucode_code.v_addr;
5980 len = priv->ucode_code.len;
5981 rc = iwl_verify_inst_sparse(priv, image, len);
5982 if (rc == 0) {
5983 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5984 return 0;
5985 }
5986
5987 IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5988
5989 /* Show first several data entries in instruction SRAM.
5990 * Selection of bootstrap image is arbitrary. */
5991 image = (__le32 *)priv->ucode_boot.v_addr;
5992 len = priv->ucode_boot.len;
5993 rc = iwl_verify_inst_full(priv, image, len);
5994
5995 return rc;
5996}
5997
5998
5999/* check contents of special bootstrap uCode SRAM */
6000static int iwl_verify_bsm(struct iwl_priv *priv)
6001{
6002 __le32 *image = priv->ucode_boot.v_addr;
6003 u32 len = priv->ucode_boot.len;
6004 u32 reg;
6005 u32 val;
6006
6007 IWL_DEBUG_INFO("Begin verify bsm\n");
6008
6009 /* verify BSM SRAM contents */
6010 val = iwl_read_restricted_reg(priv, BSM_WR_DWCOUNT_REG);
6011 for (reg = BSM_SRAM_LOWER_BOUND;
6012 reg < BSM_SRAM_LOWER_BOUND + len;
6013 reg += sizeof(u32), image ++) {
6014 val = iwl_read_restricted_reg(priv, reg);
6015 if (val != le32_to_cpu(*image)) {
6016 IWL_ERROR("BSM uCode verification failed at "
6017 "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
6018 BSM_SRAM_LOWER_BOUND,
6019 reg - BSM_SRAM_LOWER_BOUND, len,
6020 val, le32_to_cpu(*image));
6021 return -EIO;
6022 }
6023 }
6024
6025 IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
6026
6027 return 0;
6028}
6029
6030/**
6031 * iwl_load_bsm - Load bootstrap instructions
6032 *
6033 * BSM operation:
6034 *
6035 * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
6036 * in special SRAM that does not power down during RFKILL. When powering back
6037 * up after power-saving sleeps (or during initial uCode load), the BSM loads
6038 * the bootstrap program into the on-board processor, and starts it.
6039 *
6040 * The bootstrap program loads (via DMA) instructions and data for a new
6041 * program from host DRAM locations indicated by the host driver in the
6042 * BSM_DRAM_* registers. Once the new program is loaded, it starts
6043 * automatically.
6044 *
6045 * When initializing the NIC, the host driver points the BSM to the
6046 * "initialize" uCode image. This uCode sets up some internal data, then
6047 * notifies host via "initialize alive" that it is complete.
6048 *
6049 * The host then replaces the BSM_DRAM_* pointer values to point to the
6050 * normal runtime uCode instructions and a backup uCode data cache buffer
6051 * (filled initially with starting data values for the on-board processor),
6052 * then triggers the "initialize" uCode to load and launch the runtime uCode,
6053 * which begins normal operation.
6054 *
6055 * When doing a power-save shutdown, runtime uCode saves data SRAM into
6056 * the backup data cache in DRAM before SRAM is powered down.
6057 *
6058 * When powering back up, the BSM loads the bootstrap program. This reloads
6059 * the runtime uCode instructions and the backup data cache into SRAM,
6060 * and re-launches the runtime uCode from where it left off.
6061 */
6062static int iwl_load_bsm(struct iwl_priv *priv)
6063{
6064 __le32 *image = priv->ucode_boot.v_addr;
6065 u32 len = priv->ucode_boot.len;
6066 dma_addr_t pinst;
6067 dma_addr_t pdata;
6068 u32 inst_len;
6069 u32 data_len;
6070 int rc;
6071 int i;
6072 u32 done;
6073 u32 reg_offset;
6074
6075 IWL_DEBUG_INFO("Begin load bsm\n");
6076
6077 /* make sure bootstrap program is no larger than BSM's SRAM size */
6078 if (len > IWL_MAX_BSM_SIZE)
6079 return -EINVAL;
6080
6081 /* Tell bootstrap uCode where to find the "Initialize" uCode
6082 * in host DRAM ... bits 31:0 for 3945, bits 35:4 for 4965.
6083 * NOTE: iwl_initialize_alive_start() will replace these values,
6084 * after the "initialize" uCode has run, to point to
6085 * runtime/protocol instructions and backup data cache. */
6086 pinst = priv->ucode_init.p_addr >> 4;
6087 pdata = priv->ucode_init_data.p_addr >> 4;
6088 inst_len = priv->ucode_init.len;
6089 data_len = priv->ucode_init_data.len;
6090
6091 rc = iwl_grab_restricted_access(priv);
6092 if (rc)
6093 return rc;
6094
6095 iwl_write_restricted_reg(priv, BSM_DRAM_INST_PTR_REG, pinst);
6096 iwl_write_restricted_reg(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6097 iwl_write_restricted_reg(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
6098 iwl_write_restricted_reg(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
6099
6100 /* Fill BSM memory with bootstrap instructions */
6101 for (reg_offset = BSM_SRAM_LOWER_BOUND;
6102 reg_offset < BSM_SRAM_LOWER_BOUND + len;
6103 reg_offset += sizeof(u32), image++)
6104 _iwl_write_restricted_reg(priv, reg_offset,
6105 le32_to_cpu(*image));
6106
6107 rc = iwl_verify_bsm(priv);
6108 if (rc) {
6109 iwl_release_restricted_access(priv);
6110 return rc;
6111 }
6112
6113 /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
6114 iwl_write_restricted_reg(priv, BSM_WR_MEM_SRC_REG, 0x0);
6115 iwl_write_restricted_reg(priv, BSM_WR_MEM_DST_REG,
6116 RTC_INST_LOWER_BOUND);
6117 iwl_write_restricted_reg(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
6118
6119 /* Load bootstrap code into instruction SRAM now,
6120 * to prepare to load "initialize" uCode */
6121 iwl_write_restricted_reg(priv, BSM_WR_CTRL_REG,
6122 BSM_WR_CTRL_REG_BIT_START);
6123
6124 /* Wait for load of bootstrap uCode to finish */
6125 for (i = 0; i < 100; i++) {
6126 done = iwl_read_restricted_reg(priv, BSM_WR_CTRL_REG);
6127 if (!(done & BSM_WR_CTRL_REG_BIT_START))
6128 break;
6129 udelay(10);
6130 }
6131 if (i < 100)
6132 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
6133 else {
6134 IWL_ERROR("BSM write did not complete!\n");
6135 return -EIO;
6136 }
6137
6138 /* Enable future boot loads whenever power management unit triggers it
6139 * (e.g. when powering back up after power-save shutdown) */
6140 iwl_write_restricted_reg(priv, BSM_WR_CTRL_REG,
6141 BSM_WR_CTRL_REG_BIT_START_EN);
6142
6143 iwl_release_restricted_access(priv);
6144
6145 return 0;
6146}
6147
6148static void iwl_nic_start(struct iwl_priv *priv)
6149{
6150 /* Remove all resets to allow NIC to operate */
6151 iwl_write32(priv, CSR_RESET, 0);
6152}
6153
6154/**
6155 * iwl_read_ucode - Read uCode images from disk file.
6156 *
6157 * Copy into buffers for card to fetch via bus-mastering
6158 */
6159static int iwl_read_ucode(struct iwl_priv *priv)
6160{
6161 struct iwl_ucode *ucode;
6162 int rc = 0;
6163 const struct firmware *ucode_raw;
6164 const char *name = "iwlwifi-4965" IWL4965_UCODE_API ".ucode";
6165 u8 *src;
6166 size_t len;
6167 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
6168
6169 /* Ask kernel firmware_class module to get the boot firmware off disk.
6170 * request_firmware() is synchronous, file is in memory on return. */
6171 rc = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
6172 if (rc < 0) {
6173 IWL_ERROR("%s firmware file req failed: Reason %d\n", name, rc);
6174 goto error;
6175 }
6176
6177 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
6178 name, ucode_raw->size);
6179
6180 /* Make sure that we got at least our header! */
6181 if (ucode_raw->size < sizeof(*ucode)) {
6182 IWL_ERROR("File size way too small!\n");
6183 rc = -EINVAL;
6184 goto err_release;
6185 }
6186
6187 /* Data from ucode file: header followed by uCode images */
6188 ucode = (void *)ucode_raw->data;
6189
6190 ver = le32_to_cpu(ucode->ver);
6191 inst_size = le32_to_cpu(ucode->inst_size);
6192 data_size = le32_to_cpu(ucode->data_size);
6193 init_size = le32_to_cpu(ucode->init_size);
6194 init_data_size = le32_to_cpu(ucode->init_data_size);
6195 boot_size = le32_to_cpu(ucode->boot_size);
6196
6197 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
6198 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
6199 inst_size);
6200 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
6201 data_size);
6202 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
6203 init_size);
6204 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
6205 init_data_size);
6206 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
6207 boot_size);
6208
6209 /* Verify size of file vs. image size info in file's header */
6210 if (ucode_raw->size < sizeof(*ucode) +
6211 inst_size + data_size + init_size +
6212 init_data_size + boot_size) {
6213
6214 IWL_DEBUG_INFO("uCode file size %d too small\n",
6215 (int)ucode_raw->size);
6216 rc = -EINVAL;
6217 goto err_release;
6218 }
6219
6220 /* Verify that uCode images will fit in card's SRAM */
6221 if (inst_size > IWL_MAX_INST_SIZE) {
6222 IWL_DEBUG_INFO("uCode instr len %d too large to fit in card\n",
6223 (int)inst_size);
6224 rc = -EINVAL;
6225 goto err_release;
6226 }
6227
6228 if (data_size > IWL_MAX_DATA_SIZE) {
6229 IWL_DEBUG_INFO("uCode data len %d too large to fit in card\n",
6230 (int)data_size);
6231 rc = -EINVAL;
6232 goto err_release;
6233 }
6234 if (init_size > IWL_MAX_INST_SIZE) {
6235 IWL_DEBUG_INFO
6236 ("uCode init instr len %d too large to fit in card\n",
6237 (int)init_size);
6238 rc = -EINVAL;
6239 goto err_release;
6240 }
6241 if (init_data_size > IWL_MAX_DATA_SIZE) {
6242 IWL_DEBUG_INFO
6243 ("uCode init data len %d too large to fit in card\n",
6244 (int)init_data_size);
6245 rc = -EINVAL;
6246 goto err_release;
6247 }
6248 if (boot_size > IWL_MAX_BSM_SIZE) {
6249 IWL_DEBUG_INFO
6250 ("uCode boot instr len %d too large to fit in bsm\n",
6251 (int)boot_size);
6252 rc = -EINVAL;
6253 goto err_release;
6254 }
6255
6256 /* Allocate ucode buffers for card's bus-master loading ... */
6257
6258 /* Runtime instructions and 2 copies of data:
6259 * 1) unmodified from disk
6260 * 2) backup cache for save/restore during power-downs */
6261 priv->ucode_code.len = inst_size;
6262 priv->ucode_code.v_addr =
6263 pci_alloc_consistent(priv->pci_dev,
6264 priv->ucode_code.len,
6265 &(priv->ucode_code.p_addr));
6266
6267 priv->ucode_data.len = data_size;
6268 priv->ucode_data.v_addr =
6269 pci_alloc_consistent(priv->pci_dev,
6270 priv->ucode_data.len,
6271 &(priv->ucode_data.p_addr));
6272
6273 priv->ucode_data_backup.len = data_size;
6274 priv->ucode_data_backup.v_addr =
6275 pci_alloc_consistent(priv->pci_dev,
6276 priv->ucode_data_backup.len,
6277 &(priv->ucode_data_backup.p_addr));
6278
6279
6280 /* Initialization instructions and data */
6281 priv->ucode_init.len = init_size;
6282 priv->ucode_init.v_addr =
6283 pci_alloc_consistent(priv->pci_dev,
6284 priv->ucode_init.len,
6285 &(priv->ucode_init.p_addr));
6286
6287 priv->ucode_init_data.len = init_data_size;
6288 priv->ucode_init_data.v_addr =
6289 pci_alloc_consistent(priv->pci_dev,
6290 priv->ucode_init_data.len,
6291 &(priv->ucode_init_data.p_addr));
6292
6293 /* Bootstrap (instructions only, no data) */
6294 priv->ucode_boot.len = boot_size;
6295 priv->ucode_boot.v_addr =
6296 pci_alloc_consistent(priv->pci_dev,
6297 priv->ucode_boot.len,
6298 &(priv->ucode_boot.p_addr));
6299
6300 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
6301 !priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr ||
6302 !priv->ucode_boot.v_addr || !priv->ucode_data_backup.v_addr)
6303 goto err_pci_alloc;
6304
6305 /* Copy images into buffers for card's bus-master reads ... */
6306
6307 /* Runtime instructions (first block of data in file) */
6308 src = &ucode->data[0];
6309 len = priv->ucode_code.len;
6310 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %d\n",
6311 (int)len);
6312 memcpy(priv->ucode_code.v_addr, src, len);
6313 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
6314 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
6315
6316 /* Runtime data (2nd block)
6317 * NOTE: Copy into backup buffer will be done in iwl_up() */
6318 src = &ucode->data[inst_size];
6319 len = priv->ucode_data.len;
6320 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %d\n",
6321 (int)len);
6322 memcpy(priv->ucode_data.v_addr, src, len);
6323 memcpy(priv->ucode_data_backup.v_addr, src, len);
6324
6325 /* Initialization instructions (3rd block) */
6326 if (init_size) {
6327 src = &ucode->data[inst_size + data_size];
6328 len = priv->ucode_init.len;
6329 IWL_DEBUG_INFO("Copying (but not loading) init instr len %d\n",
6330 (int)len);
6331 memcpy(priv->ucode_init.v_addr, src, len);
6332 }
6333
6334 /* Initialization data (4th block) */
6335 if (init_data_size) {
6336 src = &ucode->data[inst_size + data_size + init_size];
6337 len = priv->ucode_init_data.len;
6338 IWL_DEBUG_INFO("Copying (but not loading) init data len %d\n",
6339 (int)len);
6340 memcpy(priv->ucode_init_data.v_addr, src, len);
6341 }
6342
6343 /* Bootstrap instructions (5th block) */
6344 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
6345 len = priv->ucode_boot.len;
6346 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %d\n",
6347 (int)len);
6348 memcpy(priv->ucode_boot.v_addr, src, len);
6349
6350 /* We have our copies now, allow OS release its copies */
6351 release_firmware(ucode_raw);
6352 return 0;
6353
6354 err_pci_alloc:
6355 IWL_ERROR("failed to allocate pci memory\n");
6356 rc = -ENOMEM;
6357 iwl_dealloc_ucode_pci(priv);
6358
6359 err_release:
6360 release_firmware(ucode_raw);
6361
6362 error:
6363 return rc;
6364}
6365
6366
6367/**
6368 * iwl_set_ucode_ptrs - Set uCode address location
6369 *
6370 * Tell initialization uCode where to find runtime uCode.
6371 *
6372 * BSM registers initially contain pointers to initialization uCode.
6373 * We need to replace them to load runtime uCode inst and data,
6374 * and to save runtime data when powering down.
6375 */
6376static int iwl_set_ucode_ptrs(struct iwl_priv *priv)
6377{
6378 dma_addr_t pinst;
6379 dma_addr_t pdata;
6380 int rc = 0;
6381 unsigned long flags;
6382
6383 /* bits 35:4 for 4965 */
6384 pinst = priv->ucode_code.p_addr >> 4;
6385 pdata = priv->ucode_data_backup.p_addr >> 4;
6386
6387 spin_lock_irqsave(&priv->lock, flags);
6388 rc = iwl_grab_restricted_access(priv);
6389 if (rc) {
6390 spin_unlock_irqrestore(&priv->lock, flags);
6391 return rc;
6392 }
6393
6394 /* Tell bootstrap uCode where to find image to load */
6395 iwl_write_restricted_reg(priv, BSM_DRAM_INST_PTR_REG, pinst);
6396 iwl_write_restricted_reg(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6397 iwl_write_restricted_reg(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
6398 priv->ucode_data.len);
6399
6400 /* Inst bytecount must be last to set up, bit 31 signals uCode
6401 * that all new ptr/size info is in place */
6402 iwl_write_restricted_reg(priv, BSM_DRAM_INST_BYTECOUNT_REG,
6403 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
6404
6405 iwl_release_restricted_access(priv);
6406
6407 spin_unlock_irqrestore(&priv->lock, flags);
6408
6409 IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
6410
6411 return rc;
6412}
6413
6414/**
6415 * iwl_init_alive_start - Called after REPLY_ALIVE notification receieved
6416 *
6417 * Called after REPLY_ALIVE notification received from "initialize" uCode.
6418 *
6419 * The 4965 "initialize" ALIVE reply contains calibration data for:
6420 * Voltage, temperature, and MIMO tx gain correction, now stored in priv
6421 * (3945 does not contain this data).
6422 *
6423 * Tell "initialize" uCode to go ahead and load the runtime uCode.
6424*/
6425static void iwl_init_alive_start(struct iwl_priv *priv)
6426{
6427 /* Check alive response for "valid" sign from uCode */
6428 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
6429 /* We had an error bringing up the hardware, so take it
6430 * all the way back down so we can try again */
6431 IWL_DEBUG_INFO("Initialize Alive failed.\n");
6432 goto restart;
6433 }
6434
6435 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
6436 * This is a paranoid check, because we would not have gotten the
6437 * "initialize" alive if code weren't properly loaded. */
6438 if (iwl_verify_ucode(priv)) {
6439 /* Runtime instruction load was bad;
6440 * take it all the way back down so we can try again */
6441 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
6442 goto restart;
6443 }
6444
6445 /* Calculate temperature */
6446 priv->temperature = iwl4965_get_temperature(priv);
6447
6448 /* Send pointers to protocol/runtime uCode image ... init code will
6449 * load and launch runtime uCode, which will send us another "Alive"
6450 * notification. */
6451 IWL_DEBUG_INFO("Initialization Alive received.\n");
6452 if (iwl_set_ucode_ptrs(priv)) {
6453 /* Runtime instruction load won't happen;
6454 * take it all the way back down so we can try again */
6455 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
6456 goto restart;
6457 }
6458 return;
6459
6460 restart:
6461 queue_work(priv->workqueue, &priv->restart);
6462}
6463
6464
6465/**
6466 * iwl_alive_start - called after REPLY_ALIVE notification received
6467 * from protocol/runtime uCode (initialization uCode's
6468 * Alive gets handled by iwl_init_alive_start()).
6469 */
6470static void iwl_alive_start(struct iwl_priv *priv)
6471{
6472 int rc = 0;
6473
6474 IWL_DEBUG_INFO("Runtime Alive received.\n");
6475
6476 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
6477 /* We had an error bringing up the hardware, so take it
6478 * all the way back down so we can try again */
6479 IWL_DEBUG_INFO("Alive failed.\n");
6480 goto restart;
6481 }
6482
6483 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
6484 * This is a paranoid check, because we would not have gotten the
6485 * "runtime" alive if code weren't properly loaded. */
6486 if (iwl_verify_ucode(priv)) {
6487 /* Runtime instruction load was bad;
6488 * take it all the way back down so we can try again */
6489 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
6490 goto restart;
6491 }
6492
6493 iwl_clear_stations_table(priv);
6494
6495 rc = iwl4965_alive_notify(priv);
6496 if (rc) {
6497 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
6498 rc);
6499 goto restart;
6500 }
6501
6502 /* After the ALIVE response, we can process host commands */
6503 set_bit(STATUS_ALIVE, &priv->status);
6504
6505 /* Clear out the uCode error bit if it is set */
6506 clear_bit(STATUS_FW_ERROR, &priv->status);
6507
6508 rc = iwl_init_channel_map(priv);
6509 if (rc) {
6510 IWL_ERROR("initializing regulatory failed: %d\n", rc);
6511 return;
6512 }
6513
6514 iwl_init_geos(priv);
6515
6516 if (iwl_is_rfkill(priv))
6517 return;
6518
6519 if (!priv->mac80211_registered) {
6520 /* Unlock so any user space entry points can call back into
6521 * the driver without a deadlock... */
6522 mutex_unlock(&priv->mutex);
6523 iwl_rate_control_register(priv->hw);
6524 rc = ieee80211_register_hw(priv->hw);
6525 priv->hw->conf.beacon_int = 100;
6526 mutex_lock(&priv->mutex);
6527
6528 if (rc) {
6529 IWL_ERROR("Failed to register network "
6530 "device (error %d)\n", rc);
6531 return;
6532 }
6533
6534 priv->mac80211_registered = 1;
6535
6536 iwl_reset_channel_flag(priv);
6537 } else
6538 ieee80211_start_queues(priv->hw);
6539
6540 priv->active_rate = priv->rates_mask;
6541 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
6542
6543 iwl_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
6544
6545 if (iwl_is_associated(priv)) {
6546 struct iwl_rxon_cmd *active_rxon =
6547 (struct iwl_rxon_cmd *)(&priv->active_rxon);
6548
6549 memcpy(&priv->staging_rxon, &priv->active_rxon,
6550 sizeof(priv->staging_rxon));
6551 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6552 } else {
6553 /* Initialize our rx_config data */
6554 iwl_connection_init_rx_config(priv);
6555 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
6556 }
6557
6558 /* Configure BT coexistence */
6559 iwl_send_bt_config(priv);
6560
6561 /* Configure the adapter for unassociated operation */
6562 iwl_commit_rxon(priv);
6563
6564 /* At this point, the NIC is initialized and operational */
6565 priv->notif_missed_beacons = 0;
6566 set_bit(STATUS_READY, &priv->status);
6567
6568 iwl4965_rf_kill_ct_config(priv);
6569 IWL_DEBUG_INFO("ALIVE processing complete.\n");
6570
6571 if (priv->error_recovering)
6572 iwl_error_recovery(priv);
6573
6574 return;
6575
6576 restart:
6577 queue_work(priv->workqueue, &priv->restart);
6578}
6579
6580static void iwl_cancel_deferred_work(struct iwl_priv *priv);
6581
6582static void __iwl_down(struct iwl_priv *priv)
6583{
6584 unsigned long flags;
6585 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
6586 struct ieee80211_conf *conf = NULL;
6587
6588 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
6589
6590 conf = ieee80211_get_hw_conf(priv->hw);
6591
6592 if (!exit_pending)
6593 set_bit(STATUS_EXIT_PENDING, &priv->status);
6594
6595 iwl_clear_stations_table(priv);
6596
6597 /* Unblock any waiting calls */
6598 wake_up_interruptible_all(&priv->wait_command_queue);
6599
6600 iwl_cancel_deferred_work(priv);
6601
6602 /* Wipe out the EXIT_PENDING status bit if we are not actually
6603 * exiting the module */
6604 if (!exit_pending)
6605 clear_bit(STATUS_EXIT_PENDING, &priv->status);
6606
6607 /* stop and reset the on-board processor */
6608 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
6609
6610 /* tell the device to stop sending interrupts */
6611 iwl_disable_interrupts(priv);
6612
6613 if (priv->mac80211_registered)
6614 ieee80211_stop_queues(priv->hw);
6615
6616 /* If we have not previously called iwl_init() then
6617 * clear all bits but the RF Kill and SUSPEND bits and return */
6618 if (!iwl_is_init(priv)) {
6619 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6620 STATUS_RF_KILL_HW |
6621 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6622 STATUS_RF_KILL_SW |
6623 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6624 STATUS_IN_SUSPEND;
6625 goto exit;
6626 }
6627
6628 /* ...otherwise clear out all the status bits but the RF Kill and
6629 * SUSPEND bits and continue taking the NIC down. */
6630 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6631 STATUS_RF_KILL_HW |
6632 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6633 STATUS_RF_KILL_SW |
6634 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6635 STATUS_IN_SUSPEND |
6636 test_bit(STATUS_FW_ERROR, &priv->status) <<
6637 STATUS_FW_ERROR;
6638
6639 spin_lock_irqsave(&priv->lock, flags);
6640 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
6641 spin_unlock_irqrestore(&priv->lock, flags);
6642
6643 iwl_hw_txq_ctx_stop(priv);
6644 iwl_hw_rxq_stop(priv);
6645
6646 spin_lock_irqsave(&priv->lock, flags);
6647 if (!iwl_grab_restricted_access(priv)) {
6648 iwl_write_restricted_reg(priv, APMG_CLK_DIS_REG,
6649 APMG_CLK_VAL_DMA_CLK_RQT);
6650 iwl_release_restricted_access(priv);
6651 }
6652 spin_unlock_irqrestore(&priv->lock, flags);
6653
6654 udelay(5);
6655
6656 iwl_hw_nic_stop_master(priv);
6657 iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
6658 iwl_hw_nic_reset(priv);
6659
6660 exit:
6661 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
6662
6663 if (priv->ibss_beacon)
6664 dev_kfree_skb(priv->ibss_beacon);
6665 priv->ibss_beacon = NULL;
6666
6667 /* clear out any free frames */
6668 iwl_clear_free_frames(priv);
6669}
6670
6671static void iwl_down(struct iwl_priv *priv)
6672{
6673 mutex_lock(&priv->mutex);
6674 __iwl_down(priv);
6675 mutex_unlock(&priv->mutex);
6676}
6677
6678#define MAX_HW_RESTARTS 5
6679
6680static int __iwl_up(struct iwl_priv *priv)
6681{
0795af57 6682 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 6683 int rc, i;
6684 u32 hw_rf_kill = 0;
6685
6686 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6687 IWL_WARNING("Exit pending; will not bring the NIC up\n");
6688 return -EIO;
6689 }
6690
6691 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
6692 IWL_WARNING("Radio disabled by SW RF kill (module "
6693 "parameter)\n");
6694 return 0;
6695 }
6696
6697 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
6698
6699 rc = iwl_hw_nic_init(priv);
6700 if (rc) {
6701 IWL_ERROR("Unable to int nic\n");
6702 return rc;
6703 }
6704
6705 /* make sure rfkill handshake bits are cleared */
6706 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6707 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
6708 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
6709
6710 /* clear (again), then enable host interrupts */
6711 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
6712 iwl_enable_interrupts(priv);
6713
6714 /* really make sure rfkill handshake bits are cleared */
6715 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6716 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6717
6718 /* Copy original ucode data image from disk into backup cache.
6719 * This will be used to initialize the on-board processor's
6720 * data SRAM for a clean start when the runtime program first loads. */
6721 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
6722 priv->ucode_data.len);
6723
6724 /* If platform's RF_KILL switch is set to KILL,
6725 * wait for BIT_INT_RF_KILL interrupt before loading uCode
6726 * and getting things started */
6727 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
6728 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
6729 hw_rf_kill = 1;
6730
6731 if (test_bit(STATUS_RF_KILL_HW, &priv->status) || hw_rf_kill) {
6732 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
6733 return 0;
6734 }
6735
6736 for (i = 0; i < MAX_HW_RESTARTS; i++) {
6737
6738 iwl_clear_stations_table(priv);
6739
6740 /* load bootstrap state machine,
6741 * load bootstrap program into processor's memory,
6742 * prepare to load the "initialize" uCode */
6743 rc = iwl_load_bsm(priv);
6744
6745 if (rc) {
6746 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
6747 continue;
6748 }
6749
6750 /* start card; "initialize" will load runtime ucode */
6751 iwl_nic_start(priv);
6752
6753 /* MAC Address location in EEPROM same for 3945/4965 */
6754 get_eeprom_mac(priv, priv->mac_addr);
0795af57
JP		 6755 IWL_DEBUG_INFO("MAC address: %s\n",
6756 print_mac(mac, priv->mac_addr));
b481de9c
ZY		 6757
6758 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
6759
6760 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
6761
6762 return 0;
6763 }
6764
6765 set_bit(STATUS_EXIT_PENDING, &priv->status);
6766 __iwl_down(priv);
6767
6768 /* tried to restart and config the device for as long as our
6769 * patience could withstand */
6770 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
6771 return -EIO;
6772}
6773
6774
6775/*****************************************************************************
6776 *
6777 * Workqueue callbacks
6778 *
6779 *****************************************************************************/
6780
6781static void iwl_bg_init_alive_start(struct work_struct *data)
6782{
6783 struct iwl_priv *priv =
6784 container_of(data, struct iwl_priv, init_alive_start.work);
6785
6786 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6787 return;
6788
6789 mutex_lock(&priv->mutex);
6790 iwl_init_alive_start(priv);
6791 mutex_unlock(&priv->mutex);
6792}
6793
6794static void iwl_bg_alive_start(struct work_struct *data)
6795{
6796 struct iwl_priv *priv =
6797 container_of(data, struct iwl_priv, alive_start.work);
6798
6799 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6800 return;
6801
6802 mutex_lock(&priv->mutex);
6803 iwl_alive_start(priv);
6804 mutex_unlock(&priv->mutex);
6805}
6806
6807static void iwl_bg_rf_kill(struct work_struct *work)
6808{
6809 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
6810
6811 wake_up_interruptible(&priv->wait_command_queue);
6812
6813 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6814 return;
6815
6816 mutex_lock(&priv->mutex);
6817
6818 if (!iwl_is_rfkill(priv)) {
6819 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
6820 "HW and/or SW RF Kill no longer active, restarting "
6821 "device\n");
6822 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6823 queue_work(priv->workqueue, &priv->restart);
6824 } else {
6825
6826 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
6827 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
6828 "disabled by SW switch\n");
6829 else
6830 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
6831 "Kill switch must be turned off for "
6832 "wireless networking to work.\n");
6833 }
6834 mutex_unlock(&priv->mutex);
6835}
6836
6837#define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
6838
6839static void iwl_bg_scan_check(struct work_struct *data)
6840{
6841 struct iwl_priv *priv =
6842 container_of(data, struct iwl_priv, scan_check.work);
6843
6844 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6845 return;
6846
6847 mutex_lock(&priv->mutex);
6848 if (test_bit(STATUS_SCANNING, &priv->status) ||
6849 test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6850 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
6851 "Scan completion watchdog resetting adapter (%dms)\n",
6852 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
6853 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6854 queue_work(priv->workqueue, &priv->restart);
6855 }
6856 mutex_unlock(&priv->mutex);
6857}
6858
6859static void iwl_bg_request_scan(struct work_struct *data)
6860{
6861 struct iwl_priv *priv =
6862 container_of(data, struct iwl_priv, request_scan);
6863 struct iwl_host_cmd cmd = {
6864 .id = REPLY_SCAN_CMD,
6865 .len = sizeof(struct iwl_scan_cmd),
6866 .meta.flags = CMD_SIZE_HUGE,
6867 };
6868 int rc = 0;
6869 struct iwl_scan_cmd *scan;
6870 struct ieee80211_conf *conf = NULL;
6871 u8 direct_mask;
6872 int phymode;
6873
6874 conf = ieee80211_get_hw_conf(priv->hw);
6875
6876 mutex_lock(&priv->mutex);
6877
6878 if (!iwl_is_ready(priv)) {
6879 IWL_WARNING("request scan called when driver not ready.\n");
6880 goto done;
6881 }
6882
6883 /* Make sure the scan wasn't cancelled before this queued work
6884 * was given the chance to run... */
6885 if (!test_bit(STATUS_SCANNING, &priv->status))
6886 goto done;
6887
6888 /* This should never be called or scheduled if there is currently
6889 * a scan active in the hardware. */
6890 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
6891 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6892 "Ignoring second request.\n");
6893 rc = -EIO;
6894 goto done;
6895 }
6896
6897 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6898 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6899 goto done;
6900 }
6901
6902 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6903 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
6904 goto done;
6905 }
6906
6907 if (iwl_is_rfkill(priv)) {
6908 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6909 goto done;
6910 }
6911
6912 if (!test_bit(STATUS_READY, &priv->status)) {
6913 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
6914 goto done;
6915 }
6916
6917 if (!priv->scan_bands) {
6918 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6919 goto done;
6920 }
6921
6922 if (!priv->scan) {
6923 priv->scan = kmalloc(sizeof(struct iwl_scan_cmd) +
6924 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
6925 if (!priv->scan) {
6926 rc = -ENOMEM;
6927 goto done;
6928 }
6929 }
6930 scan = priv->scan;
6931 memset(scan, 0, sizeof(struct iwl_scan_cmd) + IWL_MAX_SCAN_SIZE);
6932
6933 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
6934 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
6935
6936 if (iwl_is_associated(priv)) {
6937 u16 interval = 0;
6938 u32 extra;
6939 u32 suspend_time = 100;
6940 u32 scan_suspend_time = 100;
6941 unsigned long flags;
6942
6943 IWL_DEBUG_INFO("Scanning while associated...\n");
6944
6945 spin_lock_irqsave(&priv->lock, flags);
6946 interval = priv->beacon_int;
6947 spin_unlock_irqrestore(&priv->lock, flags);
6948
6949 scan->suspend_time = 0;
6950 scan->max_out_time = cpu_to_le32(600 * 1024);
6951 if (!interval)
6952 interval = suspend_time;
6953
6954 extra = (suspend_time / interval) << 22;
6955 scan_suspend_time = (extra |
6956 ((suspend_time % interval) * 1024));
6957 scan->suspend_time = cpu_to_le32(scan_suspend_time);
6958 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
6959 scan_suspend_time, interval);
6960 }
6961
6962 /* We should add the ability for user to lock to PASSIVE ONLY */
6963 if (priv->one_direct_scan) {
6964 IWL_DEBUG_SCAN
6965 ("Kicking off one direct scan for '%s'\n",
6966 iwl_escape_essid(priv->direct_ssid,
6967 priv->direct_ssid_len));
6968 scan->direct_scan[0].id = WLAN_EID_SSID;
6969 scan->direct_scan[0].len = priv->direct_ssid_len;
6970 memcpy(scan->direct_scan[0].ssid,
6971 priv->direct_ssid, priv->direct_ssid_len);
6972 direct_mask = 1;
6973 } else if (!iwl_is_associated(priv)) {
6974 scan->direct_scan[0].id = WLAN_EID_SSID;
6975 scan->direct_scan[0].len = priv->essid_len;
6976 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
6977 direct_mask = 1;
6978 } else
6979 direct_mask = 0;
6980
6981 /* We don't build a direct scan probe request; the uCode will do
6982 * that based on the direct_mask added to each channel entry */
6983 scan->tx_cmd.len = cpu_to_le16(
6984 iwl_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
6985 IWL_MAX_SCAN_SIZE - sizeof(scan), 0));
6986 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
6987 scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
6988 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
6989
6990 /* flags + rate selection */
6991
6992 scan->tx_cmd.tx_flags |= cpu_to_le32(0x200);
6993
6994 switch (priv->scan_bands) {
6995 case 2:
6996 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
6997 scan->tx_cmd.rate_n_flags =
6998 iwl_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
6999 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
7000
7001 scan->good_CRC_th = 0;
7002 phymode = MODE_IEEE80211G;
7003 break;
7004
7005 case 1:
7006 scan->tx_cmd.rate_n_flags =
7007 iwl_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
7008 RATE_MCS_ANT_B_MSK);
7009 scan->good_CRC_th = IWL_GOOD_CRC_TH;
7010 phymode = MODE_IEEE80211A;
7011 break;
7012
7013 default:
7014 IWL_WARNING("Invalid scan band count\n");
7015 goto done;
7016 }
7017
7018 /* select Rx chains */
7019
7020 /* Force use of chains B and C (0x6) for scan Rx.
7021 * Avoid A (0x1) because of its off-channel reception on A-band.
7022 * MIMO is not used here, but value is required to make uCode happy. */
7023 scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
7024 cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
7025 (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
7026 (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
7027
7028 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
7029 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
7030
7031 if (direct_mask)
7032 IWL_DEBUG_SCAN
7033 ("Initiating direct scan for %s.\n",
7034 iwl_escape_essid(priv->essid, priv->essid_len));
7035 else
7036 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
7037
7038 scan->channel_count =
7039 iwl_get_channels_for_scan(
7040 priv, phymode, 1, /* active */
7041 direct_mask,
7042 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
7043
7044 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
7045 scan->channel_count * sizeof(struct iwl_scan_channel);
7046 cmd.data = scan;
7047 scan->len = cpu_to_le16(cmd.len);
7048
7049 set_bit(STATUS_SCAN_HW, &priv->status);
7050 rc = iwl_send_cmd_sync(priv, &cmd);
7051 if (rc)
7052 goto done;
7053
7054 queue_delayed_work(priv->workqueue, &priv->scan_check,
7055 IWL_SCAN_CHECK_WATCHDOG);
7056
7057 mutex_unlock(&priv->mutex);
7058 return;
7059
7060 done:
7061 /* inform mac80211 sacn aborted */
7062 queue_work(priv->workqueue, &priv->scan_completed);
7063 mutex_unlock(&priv->mutex);
7064}
7065
7066static void iwl_bg_up(struct work_struct *data)
7067{
7068 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
7069
7070 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7071 return;
7072
7073 mutex_lock(&priv->mutex);
7074 __iwl_up(priv);
7075 mutex_unlock(&priv->mutex);
7076}
7077
7078static void iwl_bg_restart(struct work_struct *data)
7079{
7080 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
7081
7082 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7083 return;
7084
7085 iwl_down(priv);
7086 queue_work(priv->workqueue, &priv->up);
7087}
7088
7089static void iwl_bg_rx_replenish(struct work_struct *data)
7090{
7091 struct iwl_priv *priv =
7092 container_of(data, struct iwl_priv, rx_replenish);
7093
7094 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7095 return;
7096
7097 mutex_lock(&priv->mutex);
7098 iwl_rx_replenish(priv);
7099 mutex_unlock(&priv->mutex);
7100}
7101
7102static void iwl_bg_post_associate(struct work_struct *data)
7103{
7104 struct iwl_priv *priv = container_of(data, struct iwl_priv,
7105 post_associate.work);
7106
7107 int rc = 0;
7108 struct ieee80211_conf *conf = NULL;
0795af57 7109 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 7110
7111 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7112 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
7113 return;
7114 }
7115
0795af57
JP		 7116 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
7117 priv->assoc_id,
7118 print_mac(mac, priv->active_rxon.bssid_addr));
b481de9c
ZY		 7119
7120
7121 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7122 return;
7123
7124 mutex_lock(&priv->mutex);
7125
7126 conf = ieee80211_get_hw_conf(priv->hw);
7127
7128 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7129 iwl_commit_rxon(priv);
7130
7131 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
7132 iwl_setup_rxon_timing(priv);
7133 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7134 sizeof(priv->rxon_timing), &priv->rxon_timing);
7135 if (rc)
7136 IWL_WARNING("REPLY_RXON_TIMING failed - "
7137 "Attempting to continue.\n");
7138
7139 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7140
7141#ifdef CONFIG_IWLWIFI_HT
7142 if (priv->is_ht_enabled && priv->current_assoc_ht.is_ht)
7143 iwl4965_set_rxon_ht(priv, &priv->current_assoc_ht);
7144 else {
7145 priv->active_rate_ht[0] = 0;
7146 priv->active_rate_ht[1] = 0;
7147 priv->current_channel_width = IWL_CHANNEL_WIDTH_20MHZ;
7148 }
7149#endif /* CONFIG_IWLWIFI_HT*/
7150 iwl4965_set_rxon_chain(priv);
7151 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7152
7153 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
7154 priv->assoc_id, priv->beacon_int);
7155
7156 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7157 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
7158 else
7159 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
7160
7161 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7162 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
7163 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
7164 else
7165 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
7166
7167 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7168 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
7169
7170 }
7171
7172 iwl_commit_rxon(priv);
7173
7174 switch (priv->iw_mode) {
7175 case IEEE80211_IF_TYPE_STA:
7176 iwl_rate_scale_init(priv->hw, IWL_AP_ID);
7177 break;
7178
7179 case IEEE80211_IF_TYPE_IBSS:
7180
7181 /* clear out the station table */
7182 iwl_clear_stations_table(priv);
7183
7184 iwl_rxon_add_station(priv, BROADCAST_ADDR, 0);
7185 iwl_rxon_add_station(priv, priv->bssid, 0);
7186 iwl_rate_scale_init(priv->hw, IWL_STA_ID);
7187 iwl_send_beacon_cmd(priv);
7188
7189 break;
7190
7191 default:
7192 IWL_ERROR("%s Should not be called in %d mode\n",
7193 __FUNCTION__, priv->iw_mode);
7194 break;
7195 }
7196
7197 iwl_sequence_reset(priv);
7198
7199#ifdef CONFIG_IWLWIFI_SENSITIVITY
7200 /* Enable Rx differential gain and sensitivity calibrations */
7201 iwl4965_chain_noise_reset(priv);
7202 priv->start_calib = 1;
7203#endif /* CONFIG_IWLWIFI_SENSITIVITY */
7204
7205 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7206 priv->assoc_station_added = 1;
7207
7208#ifdef CONFIG_IWLWIFI_QOS
7209 iwl_activate_qos(priv, 0);
7210#endif /* CONFIG_IWLWIFI_QOS */
7211 mutex_unlock(&priv->mutex);
7212}
7213
7214static void iwl_bg_abort_scan(struct work_struct *work)
7215{
7216 struct iwl_priv *priv = container_of(work, struct iwl_priv,
7217 abort_scan);
7218
7219 if (!iwl_is_ready(priv))
7220 return;
7221
7222 mutex_lock(&priv->mutex);
7223
7224 set_bit(STATUS_SCAN_ABORTING, &priv->status);
7225 iwl_send_scan_abort(priv);
7226
7227 mutex_unlock(&priv->mutex);
7228}
7229
7230static void iwl_bg_scan_completed(struct work_struct *work)
7231{
7232 struct iwl_priv *priv =
7233 container_of(work, struct iwl_priv, scan_completed);
7234
7235 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
7236
7237 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7238 return;
7239
7240 ieee80211_scan_completed(priv->hw);
7241
7242 /* Since setting the TXPOWER may have been deferred while
7243 * performing the scan, fire one off */
7244 mutex_lock(&priv->mutex);
7245 iwl_hw_reg_send_txpower(priv);
7246 mutex_unlock(&priv->mutex);
7247}
7248
7249/*****************************************************************************
7250 *
7251 * mac80211 entry point functions
7252 *
7253 *****************************************************************************/
7254
4150c572 7255static int iwl_mac_start(struct ieee80211_hw *hw)
b481de9c
ZY		 7256{
7257 struct iwl_priv *priv = hw->priv;
7258
7259 IWL_DEBUG_MAC80211("enter\n");
7260
7261 /* we should be verifying the device is ready to be opened */
7262 mutex_lock(&priv->mutex);
7263
7264 priv->is_open = 1;
7265
7266 if (!iwl_is_rfkill(priv))
7267 ieee80211_start_queues(priv->hw);
7268
7269 mutex_unlock(&priv->mutex);
7270 IWL_DEBUG_MAC80211("leave\n");
7271 return 0;
7272}
7273
4150c572 7274static void iwl_mac_stop(struct ieee80211_hw *hw)
b481de9c
ZY		 7275{
7276 struct iwl_priv *priv = hw->priv;
7277
7278 IWL_DEBUG_MAC80211("enter\n");
7279 priv->is_open = 0;
7280 /*netif_stop_queue(dev); */
7281 flush_workqueue(priv->workqueue);
7282 IWL_DEBUG_MAC80211("leave\n");
b481de9c
ZY		 7283}
7284
7285static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
7286 struct ieee80211_tx_control *ctl)
7287{
7288 struct iwl_priv *priv = hw->priv;
7289
7290 IWL_DEBUG_MAC80211("enter\n");
7291
7292 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
7293 IWL_DEBUG_MAC80211("leave - monitor\n");
7294 return -1;
7295 }
7296
7297 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
7298 ctl->tx_rate);
7299
7300 if (iwl_tx_skb(priv, skb, ctl))
7301 dev_kfree_skb_any(skb);
7302
7303 IWL_DEBUG_MAC80211("leave\n");
7304 return 0;
7305}
7306
7307static int iwl_mac_add_interface(struct ieee80211_hw *hw,
7308 struct ieee80211_if_init_conf *conf)
7309{
7310 struct iwl_priv *priv = hw->priv;
7311 unsigned long flags;
0795af57 7312 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 7313
7314 IWL_DEBUG_MAC80211("enter: id %d, type %d\n", conf->if_id, conf->type);
7315 if (conf->mac_addr)
0795af57
JP		 7316 IWL_DEBUG_MAC80211("enter: MAC %s\n",
7317 print_mac(mac, conf->mac_addr));
b481de9c
ZY		 7318
7319 if (priv->interface_id) {
7320 IWL_DEBUG_MAC80211("leave - interface_id != 0\n");
7321 return 0;
7322 }
7323
7324 spin_lock_irqsave(&priv->lock, flags);
7325 priv->interface_id = conf->if_id;
7326
7327 spin_unlock_irqrestore(&priv->lock, flags);
7328
7329 mutex_lock(&priv->mutex);
7330 iwl_set_mode(priv, conf->type);
7331
7332 IWL_DEBUG_MAC80211("leave\n");
7333 mutex_unlock(&priv->mutex);
7334
7335 return 0;
7336}
7337
7338/**
7339 * iwl_mac_config - mac80211 config callback
7340 *
7341 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
7342 * be set inappropriately and the driver currently sets the hardware up to
7343 * use it whenever needed.
7344 */
7345static int iwl_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
7346{
7347 struct iwl_priv *priv = hw->priv;
7348 const struct iwl_channel_info *ch_info;
7349 unsigned long flags;
7350
7351 mutex_lock(&priv->mutex);
7352 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel);
7353
7354 if (!iwl_is_ready(priv)) {
7355 IWL_DEBUG_MAC80211("leave - not ready\n");
7356 mutex_unlock(&priv->mutex);
7357 return -EIO;
7358 }
7359
7360 /* TODO: Figure out how to get ieee80211_local->sta_scanning w/ only
7361 * what is exposed through include/ declrations */
7362 if (unlikely(!iwl_param_disable_hw_scan &&
7363 test_bit(STATUS_SCANNING, &priv->status))) {
7364 IWL_DEBUG_MAC80211("leave - scanning\n");
7365 mutex_unlock(&priv->mutex);
7366 return 0;
7367 }
7368
7369 spin_lock_irqsave(&priv->lock, flags);
7370
7371 ch_info = iwl_get_channel_info(priv, conf->phymode, conf->channel);
7372 if (!is_channel_valid(ch_info)) {
7373 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this SKU.\n",
7374 conf->channel, conf->phymode);
7375 IWL_DEBUG_MAC80211("leave - invalid channel\n");
7376 spin_unlock_irqrestore(&priv->lock, flags);
7377 mutex_unlock(&priv->mutex);
7378 return -EINVAL;
7379 }
7380
7381#ifdef CONFIG_IWLWIFI_HT
7382 /* if we are switching fron ht to 2.4 clear flags
7383 * from any ht related info since 2.4 does not
7384 * support ht */
7385 if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel)
7386#ifdef IEEE80211_CONF_CHANNEL_SWITCH
7387 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
7388#endif
7389 )
7390 priv->staging_rxon.flags = 0;
7391#endif /* CONFIG_IWLWIFI_HT */
7392
7393 iwl_set_rxon_channel(priv, conf->phymode, conf->channel);
7394
7395 iwl_set_flags_for_phymode(priv, conf->phymode);
7396
7397 /* The list of supported rates and rate mask can be different
7398 * for each phymode; since the phymode may have changed, reset
7399 * the rate mask to what mac80211 lists */
7400 iwl_set_rate(priv);
7401
7402 spin_unlock_irqrestore(&priv->lock, flags);
7403
7404#ifdef IEEE80211_CONF_CHANNEL_SWITCH
7405 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
7406 iwl_hw_channel_switch(priv, conf->channel);
7407 mutex_unlock(&priv->mutex);
7408 return 0;
7409 }
7410#endif
7411
7412 iwl_radio_kill_sw(priv, !conf->radio_enabled);
7413
7414 if (!conf->radio_enabled) {
7415 IWL_DEBUG_MAC80211("leave - radio disabled\n");
7416 mutex_unlock(&priv->mutex);
7417 return 0;
7418 }
7419
7420 if (iwl_is_rfkill(priv)) {
7421 IWL_DEBUG_MAC80211("leave - RF kill\n");
7422 mutex_unlock(&priv->mutex);
7423 return -EIO;
7424 }
7425
7426 iwl_set_rate(priv);
7427
7428 if (memcmp(&priv->active_rxon,
7429 &priv->staging_rxon, sizeof(priv->staging_rxon)))
7430 iwl_commit_rxon(priv);
7431 else
7432 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
7433
7434 IWL_DEBUG_MAC80211("leave\n");
7435
7436 mutex_unlock(&priv->mutex);
7437
7438 return 0;
7439}
7440
7441static void iwl_config_ap(struct iwl_priv *priv)
7442{
7443 int rc = 0;
7444
7445 if (priv->status & STATUS_EXIT_PENDING)
7446 return;
7447
7448 /* The following should be done only at AP bring up */
7449 if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
7450
7451 /* RXON - unassoc (to set timing command) */
7452 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7453 iwl_commit_rxon(priv);
7454
7455 /* RXON Timing */
7456 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
7457 iwl_setup_rxon_timing(priv);
7458 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7459 sizeof(priv->rxon_timing), &priv->rxon_timing);
7460 if (rc)
7461 IWL_WARNING("REPLY_RXON_TIMING failed - "
7462 "Attempting to continue.\n");
7463
7464 iwl4965_set_rxon_chain(priv);
7465
7466 /* FIXME: what should be the assoc_id for AP? */
7467 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7468 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7469 priv->staging_rxon.flags |=
7470 RXON_FLG_SHORT_PREAMBLE_MSK;
7471 else
7472 priv->staging_rxon.flags &=
7473 ~RXON_FLG_SHORT_PREAMBLE_MSK;
7474
7475 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7476 if (priv->assoc_capability &
7477 WLAN_CAPABILITY_SHORT_SLOT_TIME)
7478 priv->staging_rxon.flags |=
7479 RXON_FLG_SHORT_SLOT_MSK;
7480 else
7481 priv->staging_rxon.flags &=
7482 ~RXON_FLG_SHORT_SLOT_MSK;
7483
7484 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7485 priv->staging_rxon.flags &=
7486 ~RXON_FLG_SHORT_SLOT_MSK;
7487 }
7488 /* restore RXON assoc */
7489 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7490 iwl_commit_rxon(priv);
7491#ifdef CONFIG_IWLWIFI_QOS
7492 iwl_activate_qos(priv, 1);
7493#endif
7494 iwl_rxon_add_station(priv, BROADCAST_ADDR, 0);
7495 iwl_send_beacon_cmd(priv);
7496 } else
7497 iwl_send_beacon_cmd(priv);
7498
7499 /* FIXME - we need to add code here to detect a totally new
7500 * configuration, reset the AP, unassoc, rxon timing, assoc,
7501 * clear sta table, add BCAST sta... */
7502}
7503
7504static int iwl_mac_config_interface(struct ieee80211_hw *hw, int if_id,
7505 struct ieee80211_if_conf *conf)
7506{
7507 struct iwl_priv *priv = hw->priv;
0795af57 7508 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 7509 unsigned long flags;
7510 int rc;
7511
7512 if (conf == NULL)
7513 return -EIO;
7514
7515 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
7516 (!conf->beacon || !conf->ssid_len)) {
7517 IWL_DEBUG_MAC80211
7518 ("Leaving in AP mode because HostAPD is not ready.\n");
7519 return 0;
7520 }
7521
7522 mutex_lock(&priv->mutex);
7523
7524 IWL_DEBUG_MAC80211("enter: interface id %d\n", if_id);
7525 if (conf->bssid)
0795af57
JP		 7526 IWL_DEBUG_MAC80211("bssid: %s\n",
7527 print_mac(mac, conf->bssid));
b481de9c 7528
4150c572
JB		 7529/*
7530 * very dubious code was here; the probe filtering flag is never set:
7531 *
b481de9c
ZY		 7532 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
7533 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
4150c572
JB		 7534 */
7535 if (unlikely(test_bit(STATUS_SCANNING, &priv->status))) {
b481de9c
ZY		 7536 IWL_DEBUG_MAC80211("leave - scanning\n");
7537 mutex_unlock(&priv->mutex);
7538 return 0;
7539 }
7540
7541 if (priv->interface_id != if_id) {
7542 IWL_DEBUG_MAC80211("leave - interface_id != if_id\n");
7543 mutex_unlock(&priv->mutex);
7544 return 0;
7545 }
7546
7547 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7548 if (!conf->bssid) {
7549 conf->bssid = priv->mac_addr;
7550 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
0795af57
JP		 7551 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
7552 print_mac(mac, conf->bssid));
b481de9c
ZY		 7553 }
7554 if (priv->ibss_beacon)
7555 dev_kfree_skb(priv->ibss_beacon);
7556
7557 priv->ibss_beacon = conf->beacon;
7558 }
7559
7560 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
7561 !is_multicast_ether_addr(conf->bssid)) {
7562 /* If there is currently a HW scan going on in the background
7563 * then we need to cancel it else the RXON below will fail. */
7564 if (iwl_scan_cancel_timeout(priv, 100)) {
7565 IWL_WARNING("Aborted scan still in progress "
7566 "after 100ms\n");
7567 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
7568 mutex_unlock(&priv->mutex);
7569 return -EAGAIN;
7570 }
7571 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
7572
7573 /* TODO: Audit driver for usage of these members and see
7574 * if mac80211 deprecates them (priv->bssid looks like it
7575 * shouldn't be there, but I haven't scanned the IBSS code
7576 * to verify) - jpk */
7577 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
7578
7579 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7580 iwl_config_ap(priv);
7581 else {
7582 priv->staging_rxon.filter_flags |=
7583 RXON_FILTER_ASSOC_MSK;
7584 rc = iwl_commit_rxon(priv);
7585 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
7586 iwl_rxon_add_station(
7587 priv, priv->active_rxon.bssid_addr, 1);
7588 }
7589
7590 } else {
7591 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7592 iwl_commit_rxon(priv);
7593 }
7594
7595 spin_lock_irqsave(&priv->lock, flags);
7596 if (!conf->ssid_len)
7597 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7598 else
7599 memcpy(priv->essid, conf->ssid, conf->ssid_len);
7600
7601 priv->essid_len = conf->ssid_len;
7602 spin_unlock_irqrestore(&priv->lock, flags);
7603
7604 IWL_DEBUG_MAC80211("leave\n");
7605 mutex_unlock(&priv->mutex);
7606
7607 return 0;
7608}
7609
4150c572
JB		 7610static void iwl_configure_filter(struct ieee80211_hw *hw,
7611 unsigned int changed_flags,
7612 unsigned int *total_flags,
7613 int mc_count, struct dev_addr_list *mc_list)
7614{
7615 /*
7616 * XXX: dummy
7617 * see also iwl_connection_init_rx_config
7618 */
7619 *total_flags = 0;
7620}
7621
b481de9c
ZY		 7622static void iwl_mac_remove_interface(struct ieee80211_hw *hw,
7623 struct ieee80211_if_init_conf *conf)
7624{
7625 struct iwl_priv *priv = hw->priv;
7626
7627 IWL_DEBUG_MAC80211("enter\n");
7628
7629 mutex_lock(&priv->mutex);
7630 if (priv->interface_id == conf->if_id) {
7631 priv->interface_id = 0;
7632 memset(priv->bssid, 0, ETH_ALEN);
7633 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7634 priv->essid_len = 0;
7635 }
7636 mutex_unlock(&priv->mutex);
7637
7638 IWL_DEBUG_MAC80211("leave\n");
7639
7640}
7641
7642#define IWL_DELAY_NEXT_SCAN (HZ*2)
7643static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
7644{
7645 int rc = 0;
7646 unsigned long flags;
7647 struct iwl_priv *priv = hw->priv;
7648
7649 IWL_DEBUG_MAC80211("enter\n");
7650
7651 spin_lock_irqsave(&priv->lock, flags);
7652
7653 if (!iwl_is_ready_rf(priv)) {
7654 rc = -EIO;
7655 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
7656 goto out_unlock;
7657 }
7658
7659 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
7660 rc = -EIO;
7661 IWL_ERROR("ERROR: APs don't scan\n");
7662 goto out_unlock;
7663 }
7664
7665 /* if we just finished scan ask for delay */
7666 if (priv->last_scan_jiffies &&
7667 time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN,
7668 jiffies)) {
7669 rc = -EAGAIN;
7670 goto out_unlock;
7671 }
7672 if (len) {
7673 IWL_DEBUG_SCAN("direct scan for "
7674 "%s [%d]\n ",
7675 iwl_escape_essid(ssid, len), (int)len);
7676
7677 priv->one_direct_scan = 1;
7678 priv->direct_ssid_len = (u8)
7679 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
7680 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
7681 }
7682
7683 rc = iwl_scan_initiate(priv);
7684
7685 IWL_DEBUG_MAC80211("leave\n");
7686
7687out_unlock:
7688 spin_unlock_irqrestore(&priv->lock, flags);
7689
7690 return rc;
7691}
7692
ea49c359 7693static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
b481de9c
ZY		 7694 const u8 *local_addr, const u8 *addr,
7695 struct ieee80211_key_conf *key)
7696{
7697 struct iwl_priv *priv = hw->priv;
0795af57 7698 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 7699 int rc = 0;
7700 u8 sta_id;
7701
7702 IWL_DEBUG_MAC80211("enter\n");
7703
7704 if (!iwl_param_hwcrypto) {
7705 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7706 return -EOPNOTSUPP;
7707 }
7708
7709 if (is_zero_ether_addr(addr))
7710 /* only support pairwise keys */
7711 return -EOPNOTSUPP;
7712
7713 sta_id = iwl_hw_find_station(priv, addr);
7714 if (sta_id == IWL_INVALID_STATION) {
0795af57
JP		 7715 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7716 print_mac(mac, addr));
b481de9c
ZY		 7717 return -EINVAL;
7718 }
7719
7720 mutex_lock(&priv->mutex);
7721
7722 switch (cmd) {
7723 case SET_KEY:
7724 rc = iwl_update_sta_key_info(priv, key, sta_id);
7725 if (!rc) {
7726 iwl_set_rxon_hwcrypto(priv, 1);
7727 iwl_commit_rxon(priv);
7728 key->hw_key_idx = sta_id;
7729 IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7730 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
7731 }
7732 break;
7733 case DISABLE_KEY:
7734 rc = iwl_clear_sta_key_info(priv, sta_id);
7735 if (!rc) {
7736 iwl_set_rxon_hwcrypto(priv, 0);
7737 iwl_commit_rxon(priv);
7738 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7739 }
7740 break;
7741 default:
7742 rc = -EINVAL;
7743 }
7744
7745 IWL_DEBUG_MAC80211("leave\n");
7746 mutex_unlock(&priv->mutex);
7747
7748 return rc;
7749}
7750
7751static int iwl_mac_conf_tx(struct ieee80211_hw *hw, int queue,
7752 const struct ieee80211_tx_queue_params *params)
7753{
7754 struct iwl_priv *priv = hw->priv;
7755#ifdef CONFIG_IWLWIFI_QOS
7756 unsigned long flags;
7757 int q;
7758#endif /* CONFIG_IWL_QOS */
7759
7760 IWL_DEBUG_MAC80211("enter\n");
7761
7762 if (!iwl_is_ready_rf(priv)) {
7763 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7764 return -EIO;
7765 }
7766
7767 if (queue >= AC_NUM) {
7768 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7769 return 0;
7770 }
7771
7772#ifdef CONFIG_IWLWIFI_QOS
7773 if (!priv->qos_data.qos_enable) {
7774 priv->qos_data.qos_active = 0;
7775 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7776 return 0;
7777 }
7778 q = AC_NUM - 1 - queue;
7779
7780 spin_lock_irqsave(&priv->lock, flags);
7781
7782 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
7783 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
7784 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
7785 priv->qos_data.def_qos_parm.ac[q].edca_txop =
7786 cpu_to_le16((params->burst_time * 100));
7787
7788 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
7789 priv->qos_data.qos_active = 1;
7790
7791 spin_unlock_irqrestore(&priv->lock, flags);
7792
7793 mutex_lock(&priv->mutex);
7794 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7795 iwl_activate_qos(priv, 1);
7796 else if (priv->assoc_id && iwl_is_associated(priv))
7797 iwl_activate_qos(priv, 0);
7798
7799 mutex_unlock(&priv->mutex);
7800
7801#endif /*CONFIG_IWLWIFI_QOS */
7802
7803 IWL_DEBUG_MAC80211("leave\n");
7804 return 0;
7805}
7806
7807static int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
7808 struct ieee80211_tx_queue_stats *stats)
7809{
7810 struct iwl_priv *priv = hw->priv;
7811 int i, avail;
7812 struct iwl_tx_queue *txq;
7813 struct iwl_queue *q;
7814 unsigned long flags;
7815
7816 IWL_DEBUG_MAC80211("enter\n");
7817
7818 if (!iwl_is_ready_rf(priv)) {
7819 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7820 return -EIO;
7821 }
7822
7823 spin_lock_irqsave(&priv->lock, flags);
7824
7825 for (i = 0; i < AC_NUM; i++) {
7826 txq = &priv->txq[i];
7827 q = &txq->q;
7828 avail = iwl_queue_space(q);
7829
7830 stats->data[i].len = q->n_window - avail;
7831 stats->data[i].limit = q->n_window - q->high_mark;
7832 stats->data[i].count = q->n_window;
7833
7834 }
7835 spin_unlock_irqrestore(&priv->lock, flags);
7836
7837 IWL_DEBUG_MAC80211("leave\n");
7838
7839 return 0;
7840}
7841
7842static int iwl_mac_get_stats(struct ieee80211_hw *hw,
7843 struct ieee80211_low_level_stats *stats)
7844{
7845 IWL_DEBUG_MAC80211("enter\n");
7846 IWL_DEBUG_MAC80211("leave\n");
7847
7848 return 0;
7849}
7850
7851static u64 iwl_mac_get_tsf(struct ieee80211_hw *hw)
7852{
7853 IWL_DEBUG_MAC80211("enter\n");
7854 IWL_DEBUG_MAC80211("leave\n");
7855
7856 return 0;
7857}
7858
7859static void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
7860{
7861 struct iwl_priv *priv = hw->priv;
7862 unsigned long flags;
7863
7864 mutex_lock(&priv->mutex);
7865 IWL_DEBUG_MAC80211("enter\n");
7866
7867 priv->lq_mngr.lq_ready = 0;
7868#ifdef CONFIG_IWLWIFI_HT
7869 spin_lock_irqsave(&priv->lock, flags);
7870 memset(&priv->current_assoc_ht, 0, sizeof(struct sta_ht_info));
7871 spin_unlock_irqrestore(&priv->lock, flags);
7872#ifdef CONFIG_IWLWIFI_HT_AGG
7873/* if (priv->lq_mngr.agg_ctrl.granted_ba)
7874 iwl4965_turn_off_agg(priv, TID_ALL_SPECIFIED);*/
7875
7876 memset(&(priv->lq_mngr.agg_ctrl), 0, sizeof(struct iwl_agg_control));
7877 priv->lq_mngr.agg_ctrl.tid_traffic_load_threshold = 10;
7878 priv->lq_mngr.agg_ctrl.ba_timeout = 5000;
7879 priv->lq_mngr.agg_ctrl.auto_agg = 1;
7880
7881 if (priv->lq_mngr.agg_ctrl.auto_agg)
7882 priv->lq_mngr.agg_ctrl.requested_ba = TID_ALL_ENABLED;
7883#endif /*CONFIG_IWLWIFI_HT_AGG */
7884#endif /* CONFIG_IWLWIFI_HT */
7885
7886#ifdef CONFIG_IWLWIFI_QOS
7887 iwl_reset_qos(priv);
7888#endif
7889
7890 cancel_delayed_work(&priv->post_associate);
7891
7892 spin_lock_irqsave(&priv->lock, flags);
7893 priv->assoc_id = 0;
7894 priv->assoc_capability = 0;
7895 priv->call_post_assoc_from_beacon = 0;
7896 priv->assoc_station_added = 0;
7897
7898 /* new association get rid of ibss beacon skb */
7899 if (priv->ibss_beacon)
7900 dev_kfree_skb(priv->ibss_beacon);
7901
7902 priv->ibss_beacon = NULL;
7903
7904 priv->beacon_int = priv->hw->conf.beacon_int;
7905 priv->timestamp1 = 0;
7906 priv->timestamp0 = 0;
7907 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
7908 priv->beacon_int = 0;
7909
7910 spin_unlock_irqrestore(&priv->lock, flags);
7911
7912 /* Per mac80211.h: This is only used in IBSS mode... */
7913 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7914 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7915 mutex_unlock(&priv->mutex);
7916 return;
7917 }
7918
7919 if (!iwl_is_ready_rf(priv)) {
7920 IWL_DEBUG_MAC80211("leave - not ready\n");
7921 mutex_unlock(&priv->mutex);
7922 return;
7923 }
7924
7925 priv->only_active_channel = 0;
7926
7927 iwl_set_rate(priv);
7928
7929 mutex_unlock(&priv->mutex);
7930
7931 IWL_DEBUG_MAC80211("leave\n");
7932
7933}
7934
7935static int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
7936 struct ieee80211_tx_control *control)
7937{
7938 struct iwl_priv *priv = hw->priv;
7939 unsigned long flags;
7940
7941 mutex_lock(&priv->mutex);
7942 IWL_DEBUG_MAC80211("enter\n");
7943
7944 if (!iwl_is_ready_rf(priv)) {
7945 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7946 mutex_unlock(&priv->mutex);
7947 return -EIO;
7948 }
7949
7950 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7951 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7952 mutex_unlock(&priv->mutex);
7953 return -EIO;
7954 }
7955
7956 spin_lock_irqsave(&priv->lock, flags);
7957
7958 if (priv->ibss_beacon)
7959 dev_kfree_skb(priv->ibss_beacon);
7960
7961 priv->ibss_beacon = skb;
7962
7963 priv->assoc_id = 0;
7964
7965 IWL_DEBUG_MAC80211("leave\n");
7966 spin_unlock_irqrestore(&priv->lock, flags);
7967
7968#ifdef CONFIG_IWLWIFI_QOS
7969 iwl_reset_qos(priv);
7970#endif
7971
7972 queue_work(priv->workqueue, &priv->post_associate.work);
7973
7974 mutex_unlock(&priv->mutex);
7975
7976 return 0;
7977}
7978
7979#ifdef CONFIG_IWLWIFI_HT
7980union ht_cap_info {
7981 struct {
7982 u16 advanced_coding_cap :1;
7983 u16 supported_chan_width_set :1;
7984 u16 mimo_power_save_mode :2;
7985 u16 green_field :1;
7986 u16 short_GI20 :1;
7987 u16 short_GI40 :1;
7988 u16 tx_stbc :1;
7989 u16 rx_stbc :1;
7990 u16 beam_forming :1;
7991 u16 delayed_ba :1;
7992 u16 maximal_amsdu_size :1;
7993 u16 cck_mode_at_40MHz :1;
7994 u16 psmp_support :1;
7995 u16 stbc_ctrl_frame_support :1;
7996 u16 sig_txop_protection_support :1;
7997 };
7998 u16 val;
7999} __attribute__ ((packed));
8000
8001union ht_param_info{
8002 struct {
8003 u8 max_rx_ampdu_factor :2;
8004 u8 mpdu_density :3;
8005 u8 reserved :3;
8006 };
8007 u8 val;
8008} __attribute__ ((packed));
8009
8010union ht_exra_param_info {
8011 struct {
8012 u8 ext_chan_offset :2;
8013 u8 tx_chan_width :1;
8014 u8 rifs_mode :1;
8015 u8 controlled_access_only :1;
8016 u8 service_interval_granularity :3;
8017 };
8018 u8 val;
8019} __attribute__ ((packed));
8020
8021union ht_operation_mode{
8022 struct {
8023 u16 op_mode :2;
8024 u16 non_GF :1;
8025 u16 reserved :13;
8026 };
8027 u16 val;
8028} __attribute__ ((packed));
8029
8030
8031static int sta_ht_info_init(struct ieee80211_ht_capability *ht_cap,
8032 struct ieee80211_ht_additional_info *ht_extra,
8033 struct sta_ht_info *ht_info_ap,
8034 struct sta_ht_info *ht_info)
8035{
8036 union ht_cap_info cap;
8037 union ht_operation_mode op_mode;
8038 union ht_param_info param_info;
8039 union ht_exra_param_info extra_param_info;
8040
8041 IWL_DEBUG_MAC80211("enter: \n");
8042
8043 if (!ht_info) {
8044 IWL_DEBUG_MAC80211("leave: ht_info is NULL\n");
8045 return -1;
8046 }
8047
8048 if (ht_cap) {
8049 cap.val = (u16) le16_to_cpu(ht_cap->capabilities_info);
8050 param_info.val = ht_cap->mac_ht_params_info;
8051 ht_info->is_ht = 1;
8052 if (cap.short_GI20)
8053 ht_info->sgf |= 0x1;
8054 if (cap.short_GI40)
8055 ht_info->sgf |= 0x2;
8056 ht_info->is_green_field = cap.green_field;
8057 ht_info->max_amsdu_size = cap.maximal_amsdu_size;
8058 ht_info->supported_chan_width = cap.supported_chan_width_set;
8059 ht_info->tx_mimo_ps_mode = cap.mimo_power_save_mode;
8060 memcpy(ht_info->supp_rates, ht_cap->supported_mcs_set, 16);
8061
8062 ht_info->ampdu_factor = param_info.max_rx_ampdu_factor;
8063 ht_info->mpdu_density = param_info.mpdu_density;
8064
8065 IWL_DEBUG_MAC80211("SISO mask 0x%X MIMO mask 0x%X \n",
8066 ht_cap->supported_mcs_set[0],
8067 ht_cap->supported_mcs_set[1]);
8068
8069 if (ht_info_ap) {
8070 ht_info->control_channel = ht_info_ap->control_channel;
8071 ht_info->extension_chan_offset =
8072 ht_info_ap->extension_chan_offset;
8073 ht_info->tx_chan_width = ht_info_ap->tx_chan_width;
8074 ht_info->operating_mode = ht_info_ap->operating_mode;
8075 }
8076
8077 if (ht_extra) {
8078 extra_param_info.val = ht_extra->ht_param;
8079 ht_info->control_channel = ht_extra->control_chan;
8080 ht_info->extension_chan_offset =
8081 extra_param_info.ext_chan_offset;
8082 ht_info->tx_chan_width = extra_param_info.tx_chan_width;
8083 op_mode.val = (u16)
8084 le16_to_cpu(ht_extra->operation_mode);
8085 ht_info->operating_mode = op_mode.op_mode;
8086 IWL_DEBUG_MAC80211("control channel %d\n",
8087 ht_extra->control_chan);
8088 }
8089 } else
8090 ht_info->is_ht = 0;
8091
8092 IWL_DEBUG_MAC80211("leave\n");
8093 return 0;
8094}
8095
8096static int iwl_mac_conf_ht(struct ieee80211_hw *hw,
8097 struct ieee80211_ht_capability *ht_cap,
8098 struct ieee80211_ht_additional_info *ht_extra)
8099{
8100 struct iwl_priv *priv = hw->priv;
8101 int rs;
8102
8103 IWL_DEBUG_MAC80211("enter: \n");
8104
8105 rs = sta_ht_info_init(ht_cap, ht_extra, NULL, &priv->current_assoc_ht);
8106 iwl4965_set_rxon_chain(priv);
8107
8108 if (priv && priv->assoc_id &&
8109 (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
8110 unsigned long flags;
8111
8112 spin_lock_irqsave(&priv->lock, flags);
8113 if (priv->beacon_int)
8114 queue_work(priv->workqueue, &priv->post_associate.work);
8115 else
8116 priv->call_post_assoc_from_beacon = 1;
8117 spin_unlock_irqrestore(&priv->lock, flags);
8118 }
8119
8120 IWL_DEBUG_MAC80211("leave: control channel %d\n",
8121 ht_extra->control_chan);
8122 return rs;
8123
8124}
8125
8126static void iwl_set_ht_capab(struct ieee80211_hw *hw,
8127 struct ieee80211_ht_capability *ht_cap,
8128 u8 use_wide_chan)
8129{
8130 union ht_cap_info cap;
8131 union ht_param_info param_info;
8132
8133 memset(&cap, 0, sizeof(union ht_cap_info));
8134 memset(&param_info, 0, sizeof(union ht_param_info));
8135
8136 cap.maximal_amsdu_size = HT_IE_MAX_AMSDU_SIZE_4K;
8137 cap.green_field = 1;
8138 cap.short_GI20 = 1;
8139 cap.short_GI40 = 1;
8140 cap.supported_chan_width_set = use_wide_chan;
8141 cap.mimo_power_save_mode = 0x3;
8142
8143 param_info.max_rx_ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
8144 param_info.mpdu_density = CFG_HT_MPDU_DENSITY_DEF;
8145 ht_cap->capabilities_info = (__le16) cpu_to_le16(cap.val);
8146 ht_cap->mac_ht_params_info = (u8) param_info.val;
8147
8148 ht_cap->supported_mcs_set[0] = 0xff;
8149 ht_cap->supported_mcs_set[1] = 0xff;
8150 ht_cap->supported_mcs_set[4] =
8151 (cap.supported_chan_width_set) ? 0x1: 0x0;
8152}
8153
8154static void iwl_mac_get_ht_capab(struct ieee80211_hw *hw,
8155 struct ieee80211_ht_capability *ht_cap)
8156{
8157 u8 use_wide_channel = 1;
8158 struct iwl_priv *priv = hw->priv;
8159
8160 IWL_DEBUG_MAC80211("enter: \n");
8161 if (priv->channel_width != IWL_CHANNEL_WIDTH_40MHZ)
8162 use_wide_channel = 0;
8163
8164 /* no fat tx allowed on 2.4GHZ */
8165 if (priv->phymode != MODE_IEEE80211A)
8166 use_wide_channel = 0;
8167
8168 iwl_set_ht_capab(hw, ht_cap, use_wide_channel);
8169 IWL_DEBUG_MAC80211("leave: \n");
8170}
8171#endif /*CONFIG_IWLWIFI_HT*/
8172
8173/*****************************************************************************
8174 *
8175 * sysfs attributes
8176 *
8177 *****************************************************************************/
8178
8179#ifdef CONFIG_IWLWIFI_DEBUG
8180
8181/*
8182 * The following adds a new attribute to the sysfs representation
8183 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
8184 * used for controlling the debug level.
8185 *
8186 * See the level definitions in iwl for details.
8187 */
8188
8189static ssize_t show_debug_level(struct device_driver *d, char *buf)
8190{
8191 return sprintf(buf, "0x%08X\n", iwl_debug_level);
8192}
8193static ssize_t store_debug_level(struct device_driver *d,
8194 const char *buf, size_t count)
8195{
8196 char *p = (char *)buf;
8197 u32 val;
8198
8199 val = simple_strtoul(p, &p, 0);
8200 if (p == buf)
8201 printk(KERN_INFO DRV_NAME
8202 ": %s is not in hex or decimal form.\n", buf);
8203 else
8204 iwl_debug_level = val;
8205
8206 return strnlen(buf, count);
8207}
8208
8209static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
8210 show_debug_level, store_debug_level);
8211
8212#endif /* CONFIG_IWLWIFI_DEBUG */
8213
8214static ssize_t show_rf_kill(struct device *d,
8215 struct device_attribute *attr, char *buf)
8216{
8217 /*
8218 * 0 - RF kill not enabled
8219 * 1 - SW based RF kill active (sysfs)
8220 * 2 - HW based RF kill active
8221 * 3 - Both HW and SW based RF kill active
8222 */
8223 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8224 int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) |
8225 (test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0);
8226
8227 return sprintf(buf, "%i\n", val);
8228}
8229
8230static ssize_t store_rf_kill(struct device *d,
8231 struct device_attribute *attr,
8232 const char *buf, size_t count)
8233{
8234 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8235
8236 mutex_lock(&priv->mutex);
8237 iwl_radio_kill_sw(priv, buf[0] == '1');
8238 mutex_unlock(&priv->mutex);
8239
8240 return count;
8241}
8242
8243static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);
8244
8245static ssize_t show_temperature(struct device *d,
8246 struct device_attribute *attr, char *buf)
8247{
8248 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8249
8250 if (!iwl_is_alive(priv))
8251 return -EAGAIN;
8252
8253 return sprintf(buf, "%d\n", iwl_hw_get_temperature(priv));
8254}
8255
8256static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
8257
8258static ssize_t show_rs_window(struct device *d,
8259 struct device_attribute *attr,
8260 char *buf)
8261{
8262 struct iwl_priv *priv = d->driver_data;
8263 return iwl_fill_rs_info(priv->hw, buf, IWL_AP_ID);
8264}
8265static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
8266
8267static ssize_t show_tx_power(struct device *d,
8268 struct device_attribute *attr, char *buf)
8269{
8270 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8271 return sprintf(buf, "%d\n", priv->user_txpower_limit);
8272}
8273
8274static ssize_t store_tx_power(struct device *d,
8275 struct device_attribute *attr,
8276 const char *buf, size_t count)
8277{
8278 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8279 char *p = (char *)buf;
8280 u32 val;
8281
8282 val = simple_strtoul(p, &p, 10);
8283 if (p == buf)
8284 printk(KERN_INFO DRV_NAME
8285 ": %s is not in decimal form.\n", buf);
8286 else
8287 iwl_hw_reg_set_txpower(priv, val);
8288
8289 return count;
8290}
8291
8292static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
8293
8294static ssize_t show_flags(struct device *d,
8295 struct device_attribute *attr, char *buf)
8296{
8297 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8298
8299 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
8300}
8301
8302static ssize_t store_flags(struct device *d,
8303 struct device_attribute *attr,
8304 const char *buf, size_t count)
8305{
8306 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8307 u32 flags = simple_strtoul(buf, NULL, 0);
8308
8309 mutex_lock(&priv->mutex);
8310 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
8311 /* Cancel any currently running scans... */
8312 if (iwl_scan_cancel_timeout(priv, 100))
8313 IWL_WARNING("Could not cancel scan.\n");
8314 else {
8315 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
8316 flags);
8317 priv->staging_rxon.flags = cpu_to_le32(flags);
8318 iwl_commit_rxon(priv);
8319 }
8320 }
8321 mutex_unlock(&priv->mutex);
8322
8323 return count;
8324}
8325
8326static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
8327
8328static ssize_t show_filter_flags(struct device *d,
8329 struct device_attribute *attr, char *buf)
8330{
8331 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8332
8333 return sprintf(buf, "0x%04X\n",
8334 le32_to_cpu(priv->active_rxon.filter_flags));
8335}
8336
8337static ssize_t store_filter_flags(struct device *d,
8338 struct device_attribute *attr,
8339 const char *buf, size_t count)
8340{
8341 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8342 u32 filter_flags = simple_strtoul(buf, NULL, 0);
8343
8344 mutex_lock(&priv->mutex);
8345 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
8346 /* Cancel any currently running scans... */
8347 if (iwl_scan_cancel_timeout(priv, 100))
8348 IWL_WARNING("Could not cancel scan.\n");
8349 else {
8350 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
8351 "0x%04X\n", filter_flags);
8352 priv->staging_rxon.filter_flags =
8353 cpu_to_le32(filter_flags);
8354 iwl_commit_rxon(priv);
8355 }
8356 }
8357 mutex_unlock(&priv->mutex);
8358
8359 return count;
8360}
8361
8362static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
8363 store_filter_flags);
8364
8365static ssize_t show_tune(struct device *d,
8366 struct device_attribute *attr, char *buf)
8367{
8368 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8369
8370 return sprintf(buf, "0x%04X\n",
8371 (priv->phymode << 8) |
8372 le16_to_cpu(priv->active_rxon.channel));
8373}
8374
8375static void iwl_set_flags_for_phymode(struct iwl_priv *priv, u8 phymode);
8376
8377static ssize_t store_tune(struct device *d,
8378 struct device_attribute *attr,
8379 const char *buf, size_t count)
8380{
8381 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8382 char *p = (char *)buf;
8383 u16 tune = simple_strtoul(p, &p, 0);
8384 u8 phymode = (tune >> 8) & 0xff;
8385 u16 channel = tune & 0xff;
8386
8387 IWL_DEBUG_INFO("Tune request to:%d channel:%d\n", phymode, channel);
8388
8389 mutex_lock(&priv->mutex);
8390 if ((le16_to_cpu(priv->staging_rxon.channel) != channel) ||
8391 (priv->phymode != phymode)) {
8392 const struct iwl_channel_info *ch_info;
8393
8394 ch_info = iwl_get_channel_info(priv, phymode, channel);
8395 if (!ch_info) {
8396 IWL_WARNING("Requested invalid phymode/channel "
8397 "combination: %d %d\n", phymode, channel);
8398 mutex_unlock(&priv->mutex);
8399 return -EINVAL;
8400 }
8401
8402 /* Cancel any currently running scans... */
8403 if (iwl_scan_cancel_timeout(priv, 100))
8404 IWL_WARNING("Could not cancel scan.\n");
8405 else {
8406 IWL_DEBUG_INFO("Committing phymode and "
8407 "rxon.channel = %d %d\n",
8408 phymode, channel);
8409
8410 iwl_set_rxon_channel(priv, phymode, channel);
8411 iwl_set_flags_for_phymode(priv, phymode);
8412
8413 iwl_set_rate(priv);
8414 iwl_commit_rxon(priv);
8415 }
8416 }
8417 mutex_unlock(&priv->mutex);
8418
8419 return count;
8420}
8421
8422static DEVICE_ATTR(tune, S_IWUSR | S_IRUGO, show_tune, store_tune);
8423
8424#ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
8425
8426static ssize_t show_measurement(struct device *d,
8427 struct device_attribute *attr, char *buf)
8428{
8429 struct iwl_priv *priv = dev_get_drvdata(d);
8430 struct iwl_spectrum_notification measure_report;
8431 u32 size = sizeof(measure_report), len = 0, ofs = 0;
8432 u8 *data = (u8 *) & measure_report;
8433 unsigned long flags;
8434
8435 spin_lock_irqsave(&priv->lock, flags);
8436 if (!(priv->measurement_status & MEASUREMENT_READY)) {
8437 spin_unlock_irqrestore(&priv->lock, flags);
8438 return 0;
8439 }
8440 memcpy(&measure_report, &priv->measure_report, size);
8441 priv->measurement_status = 0;
8442 spin_unlock_irqrestore(&priv->lock, flags);
8443
8444 while (size && (PAGE_SIZE - len)) {
8445 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8446 PAGE_SIZE - len, 1);
8447 len = strlen(buf);
8448 if (PAGE_SIZE - len)
8449 buf[len++] = '\n';
8450
8451 ofs += 16;
8452 size -= min(size, 16U);
8453 }
8454
8455 return len;
8456}
8457
8458static ssize_t store_measurement(struct device *d,
8459 struct device_attribute *attr,
8460 const char *buf, size_t count)
8461{
8462 struct iwl_priv *priv = dev_get_drvdata(d);
8463 struct ieee80211_measurement_params params = {
8464 .channel = le16_to_cpu(priv->active_rxon.channel),
8465 .start_time = cpu_to_le64(priv->last_tsf),
8466 .duration = cpu_to_le16(1),
8467 };
8468 u8 type = IWL_MEASURE_BASIC;
8469 u8 buffer[32];
8470 u8 channel;
8471
8472 if (count) {
8473 char *p = buffer;
8474 strncpy(buffer, buf, min(sizeof(buffer), count));
8475 channel = simple_strtoul(p, NULL, 0);
8476 if (channel)
8477 params.channel = channel;
8478
8479 p = buffer;
8480 while (*p && *p != ' ')
8481 p++;
8482 if (*p)
8483 type = simple_strtoul(p + 1, NULL, 0);
8484 }
8485
8486 IWL_DEBUG_INFO("Invoking measurement of type %d on "
8487 "channel %d (for '%s')\n", type, params.channel, buf);
8488 iwl_get_measurement(priv, &params, type);
8489
8490 return count;
8491}
8492
8493static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
8494 show_measurement, store_measurement);
8495#endif /* CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT */
8496
8497static ssize_t store_retry_rate(struct device *d,
8498 struct device_attribute *attr,
8499 const char *buf, size_t count)
8500{
8501 struct iwl_priv *priv = dev_get_drvdata(d);
8502
8503 priv->retry_rate = simple_strtoul(buf, NULL, 0);
8504 if (priv->retry_rate <= 0)
8505 priv->retry_rate = 1;
8506
8507 return count;
8508}
8509
8510static ssize_t show_retry_rate(struct device *d,
8511 struct device_attribute *attr, char *buf)
8512{
8513 struct iwl_priv *priv = dev_get_drvdata(d);
8514 return sprintf(buf, "%d", priv->retry_rate);
8515}
8516
8517static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
8518 store_retry_rate);
8519
8520static ssize_t store_power_level(struct device *d,
8521 struct device_attribute *attr,
8522 const char *buf, size_t count)
8523{
8524 struct iwl_priv *priv = dev_get_drvdata(d);
8525 int rc;
8526 int mode;
8527
8528 mode = simple_strtoul(buf, NULL, 0);
8529 mutex_lock(&priv->mutex);
8530
8531 if (!iwl_is_ready(priv)) {
8532 rc = -EAGAIN;
8533 goto out;
8534 }
8535
8536 if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
8537 mode = IWL_POWER_AC;
8538 else
8539 mode |= IWL_POWER_ENABLED;
8540
8541 if (mode != priv->power_mode) {
8542 rc = iwl_send_power_mode(priv, IWL_POWER_LEVEL(mode));
8543 if (rc) {
8544 IWL_DEBUG_MAC80211("failed setting power mode.\n");
8545 goto out;
8546 }
8547 priv->power_mode = mode;
8548 }
8549
8550 rc = count;
8551
8552 out:
8553 mutex_unlock(&priv->mutex);
8554 return rc;
8555}
8556
8557#define MAX_WX_STRING 80
8558
8559/* Values are in microsecond */
8560static const s32 timeout_duration[] = {
8561 350000,
8562 250000,
8563 75000,
8564 37000,
8565 25000,
8566};
8567static const s32 period_duration[] = {
8568 400000,
8569 700000,
8570 1000000,
8571 1000000,
8572 1000000
8573};
8574
8575static ssize_t show_power_level(struct device *d,
8576 struct device_attribute *attr, char *buf)
8577{
8578 struct iwl_priv *priv = dev_get_drvdata(d);
8579 int level = IWL_POWER_LEVEL(priv->power_mode);
8580 char *p = buf;
8581
8582 p += sprintf(p, "%d ", level);
8583 switch (level) {
8584 case IWL_POWER_MODE_CAM:
8585 case IWL_POWER_AC:
8586 p += sprintf(p, "(AC)");
8587 break;
8588 case IWL_POWER_BATTERY:
8589 p += sprintf(p, "(BATTERY)");
8590 break;
8591 default:
8592 p += sprintf(p,
8593 "(Timeout %dms, Period %dms)",
8594 timeout_duration[level - 1] / 1000,
8595 period_duration[level - 1] / 1000);
8596 }
8597
8598 if (!(priv->power_mode & IWL_POWER_ENABLED))
8599 p += sprintf(p, " OFF\n");
8600 else
8601 p += sprintf(p, " \n");
8602
8603 return (p - buf + 1);
8604
8605}
8606
8607static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
8608 store_power_level);
8609
8610static ssize_t show_channels(struct device *d,
8611 struct device_attribute *attr, char *buf)
8612{
8613 struct iwl_priv *priv = dev_get_drvdata(d);
8614 int len = 0, i;
8615 struct ieee80211_channel *channels = NULL;
8616 const struct ieee80211_hw_mode *hw_mode = NULL;
8617 int count = 0;
8618
8619 if (!iwl_is_ready(priv))
8620 return -EAGAIN;
8621
8622 hw_mode = iwl_get_hw_mode(priv, MODE_IEEE80211G);
8623 if (!hw_mode)
8624 hw_mode = iwl_get_hw_mode(priv, MODE_IEEE80211B);
8625 if (hw_mode) {
8626 channels = hw_mode->channels;
8627 count = hw_mode->num_channels;
8628 }
8629
8630 len +=
8631 sprintf(&buf[len],
8632 "Displaying %d channels in 2.4GHz band "
8633 "(802.11bg):\n", count);
8634
8635 for (i = 0; i < count; i++)
8636 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8637 channels[i].chan,
8638 channels[i].power_level,
8639 channels[i].
8640 flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8641 " (IEEE 802.11h required)" : "",
8642 (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8643 || (channels[i].
8644 flag &
8645 IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8646 ", IBSS",
8647 channels[i].
8648 flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8649 "active/passive" : "passive only");
8650
8651 hw_mode = iwl_get_hw_mode(priv, MODE_IEEE80211A);
8652 if (hw_mode) {
8653 channels = hw_mode->channels;
8654 count = hw_mode->num_channels;
8655 } else {
8656 channels = NULL;
8657 count = 0;
8658 }
8659
8660 len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
8661 "(802.11a):\n", count);
8662
8663 for (i = 0; i < count; i++)
8664 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8665 channels[i].chan,
8666 channels[i].power_level,
8667 channels[i].
8668 flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8669 " (IEEE 802.11h required)" : "",
8670 (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8671 || (channels[i].
8672 flag &
8673 IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8674 ", IBSS",
8675 channels[i].
8676 flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8677 "active/passive" : "passive only");
8678
8679 return len;
8680}
8681
8682static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
8683
8684static ssize_t show_statistics(struct device *d,
8685 struct device_attribute *attr, char *buf)
8686{
8687 struct iwl_priv *priv = dev_get_drvdata(d);
8688 u32 size = sizeof(struct iwl_notif_statistics);
8689 u32 len = 0, ofs = 0;
8690 u8 *data = (u8 *) & priv->statistics;
8691 int rc = 0;
8692
8693 if (!iwl_is_alive(priv))
8694 return -EAGAIN;
8695
8696 mutex_lock(&priv->mutex);
8697 rc = iwl_send_statistics_request(priv);
8698 mutex_unlock(&priv->mutex);
8699
8700 if (rc) {
8701 len = sprintf(buf,
8702 "Error sending statistics request: 0x%08X\n", rc);
8703 return len;
8704 }
8705
8706 while (size && (PAGE_SIZE - len)) {
8707 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8708 PAGE_SIZE - len, 1);
8709 len = strlen(buf);
8710 if (PAGE_SIZE - len)
8711 buf[len++] = '\n';
8712
8713 ofs += 16;
8714 size -= min(size, 16U);
8715 }
8716
8717 return len;
8718}
8719
8720static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
8721
8722static ssize_t show_antenna(struct device *d,
8723 struct device_attribute *attr, char *buf)
8724{
8725 struct iwl_priv *priv = dev_get_drvdata(d);
8726
8727 if (!iwl_is_alive(priv))
8728 return -EAGAIN;
8729
8730 return sprintf(buf, "%d\n", priv->antenna);
8731}
8732
8733static ssize_t store_antenna(struct device *d,
8734 struct device_attribute *attr,
8735 const char *buf, size_t count)
8736{
8737 int ant;
8738 struct iwl_priv *priv = dev_get_drvdata(d);
8739
8740 if (count == 0)
8741 return 0;
8742
8743 if (sscanf(buf, "%1i", &ant) != 1) {
8744 IWL_DEBUG_INFO("not in hex or decimal form.\n");
8745 return count;
8746 }
8747
8748 if ((ant >= 0) && (ant <= 2)) {
8749 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
8750 priv->antenna = (enum iwl_antenna)ant;
8751 } else
8752 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
8753
8754
8755 return count;
8756}
8757
8758static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
8759
8760static ssize_t show_status(struct device *d,
8761 struct device_attribute *attr, char *buf)
8762{
8763 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8764 if (!iwl_is_alive(priv))
8765 return -EAGAIN;
8766 return sprintf(buf, "0x%08x\n", (int)priv->status);
8767}
8768
8769static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
8770
8771static ssize_t dump_error_log(struct device *d,
8772 struct device_attribute *attr,
8773 const char *buf, size_t count)
8774{
8775 char *p = (char *)buf;
8776
8777 if (p[0] == '1')
8778 iwl_dump_nic_error_log((struct iwl_priv *)d->driver_data);
8779
8780 return strnlen(buf, count);
8781}
8782
8783static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
8784
8785static ssize_t dump_event_log(struct device *d,
8786 struct device_attribute *attr,
8787 const char *buf, size_t count)
8788{
8789 char *p = (char *)buf;
8790
8791 if (p[0] == '1')
8792 iwl_dump_nic_event_log((struct iwl_priv *)d->driver_data);
8793
8794 return strnlen(buf, count);
8795}
8796
8797static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
8798
8799/*****************************************************************************
8800 *
8801 * driver setup and teardown
8802 *
8803 *****************************************************************************/
8804
8805static void iwl_setup_deferred_work(struct iwl_priv *priv)
8806{
8807 priv->workqueue = create_workqueue(DRV_NAME);
8808
8809 init_waitqueue_head(&priv->wait_command_queue);
8810
8811 INIT_WORK(&priv->up, iwl_bg_up);
8812 INIT_WORK(&priv->restart, iwl_bg_restart);
8813 INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
8814 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
8815 INIT_WORK(&priv->request_scan, iwl_bg_request_scan);
8816 INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
8817 INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
8818 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
8819 INIT_DELAYED_WORK(&priv->post_associate, iwl_bg_post_associate);
8820 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
8821 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
8822 INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
8823
8824 iwl_hw_setup_deferred_work(priv);
8825
8826 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
8827 iwl_irq_tasklet, (unsigned long)priv);
8828}
8829
8830static void iwl_cancel_deferred_work(struct iwl_priv *priv)
8831{
8832 iwl_hw_cancel_deferred_work(priv);
8833
8834 cancel_delayed_work(&priv->scan_check);
8835 cancel_delayed_work(&priv->alive_start);
8836 cancel_delayed_work(&priv->post_associate);
8837 cancel_work_sync(&priv->beacon_update);
8838}
8839
8840static struct attribute *iwl_sysfs_entries[] = {
8841 &dev_attr_antenna.attr,
8842 &dev_attr_channels.attr,
8843 &dev_attr_dump_errors.attr,
8844 &dev_attr_dump_events.attr,
8845 &dev_attr_flags.attr,
8846 &dev_attr_filter_flags.attr,
8847#ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
8848 &dev_attr_measurement.attr,
8849#endif
8850 &dev_attr_power_level.attr,
8851 &dev_attr_retry_rate.attr,
8852 &dev_attr_rf_kill.attr,
8853 &dev_attr_rs_window.attr,
8854 &dev_attr_statistics.attr,
8855 &dev_attr_status.attr,
8856 &dev_attr_temperature.attr,
8857 &dev_attr_tune.attr,
8858 &dev_attr_tx_power.attr,
8859
8860 NULL
8861};
8862
8863static struct attribute_group iwl_attribute_group = {
8864 .name = NULL, /* put in device directory */
8865 .attrs = iwl_sysfs_entries,
8866};
8867
8868static struct ieee80211_ops iwl_hw_ops = {
8869 .tx = iwl_mac_tx,
4150c572 8870 .start = iwl_mac_start,
b481de9c
ZY		 8871 .stop = iwl_mac_stop,
8872 .add_interface = iwl_mac_add_interface,
8873 .remove_interface = iwl_mac_remove_interface,
8874 .config = iwl_mac_config,
8875 .config_interface = iwl_mac_config_interface,
4150c572 8876 .configure_filter = iwl_configure_filter,
b481de9c
ZY		 8877 .set_key = iwl_mac_set_key,
8878 .get_stats = iwl_mac_get_stats,
8879 .get_tx_stats = iwl_mac_get_tx_stats,
8880 .conf_tx = iwl_mac_conf_tx,
8881 .get_tsf = iwl_mac_get_tsf,
8882 .reset_tsf = iwl_mac_reset_tsf,
8883 .beacon_update = iwl_mac_beacon_update,
8884#ifdef CONFIG_IWLWIFI_HT
8885 .conf_ht = iwl_mac_conf_ht,
8886 .get_ht_capab = iwl_mac_get_ht_capab,
8887#ifdef CONFIG_IWLWIFI_HT_AGG
8888 .ht_tx_agg_start = iwl_mac_ht_tx_agg_start,
8889 .ht_tx_agg_stop = iwl_mac_ht_tx_agg_stop,
8890 .ht_rx_agg_start = iwl_mac_ht_rx_agg_start,
8891 .ht_rx_agg_stop = iwl_mac_ht_rx_agg_stop,
8892#endif /* CONFIG_IWLWIFI_HT_AGG */
8893#endif /* CONFIG_IWLWIFI_HT */
8894 .hw_scan = iwl_mac_hw_scan
8895};
8896
8897static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
8898{
8899 int err = 0;
8900 struct iwl_priv *priv;
8901 struct ieee80211_hw *hw;
8902 int i;
8903
8904 if (iwl_param_disable_hw_scan) {
8905 IWL_DEBUG_INFO("Disabling hw_scan\n");
8906 iwl_hw_ops.hw_scan = NULL;
8907 }
8908
8909 if ((iwl_param_queues_num > IWL_MAX_NUM_QUEUES) ||
8910 (iwl_param_queues_num < IWL_MIN_NUM_QUEUES)) {
8911 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
8912 IWL_MIN_NUM_QUEUES, IWL_MAX_NUM_QUEUES);
8913 err = -EINVAL;
8914 goto out;
8915 }
8916
8917 /* mac80211 allocates memory for this device instance, including
8918 * space for this driver's private structure */
8919 hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwl_hw_ops);
8920 if (hw == NULL) {
8921 IWL_ERROR("Can not allocate network device\n");
8922 err = -ENOMEM;
8923 goto out;
8924 }
8925 SET_IEEE80211_DEV(hw, &pdev->dev);
8926
8927 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
8928 priv = hw->priv;
8929 priv->hw = hw;
8930
8931 priv->pci_dev = pdev;
8932 priv->antenna = (enum iwl_antenna)iwl_param_antenna;
8933#ifdef CONFIG_IWLWIFI_DEBUG
8934 iwl_debug_level = iwl_param_debug;
8935 atomic_set(&priv->restrict_refcnt, 0);
8936#endif
8937 priv->retry_rate = 1;
8938
8939 priv->ibss_beacon = NULL;
8940
8941 /* Tell mac80211 and its clients (e.g. Wireless Extensions)
8942 * the range of signal quality values that we'll provide.
8943 * Negative values for level/noise indicate that we'll provide dBm.
8944 * For WE, at least, non-0 values here *enable* display of values
8945 * in app (iwconfig). */
8946 hw->max_rssi = -20; /* signal level, negative indicates dBm */
8947 hw->max_noise = -20; /* noise level, negative indicates dBm */
8948 hw->max_signal = 100; /* link quality indication (%) */
8949
8950 /* Tell mac80211 our Tx characteristics */
8951 hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE;
8952
8953 hw->queues = 4;
8954#ifdef CONFIG_IWLWIFI_HT
8955#ifdef CONFIG_IWLWIFI_HT_AGG
8956 hw->queues = 16;
8957#endif /* CONFIG_IWLWIFI_HT_AGG */
8958#endif /* CONFIG_IWLWIFI_HT */
8959
8960 spin_lock_init(&priv->lock);
8961 spin_lock_init(&priv->power_data.lock);
8962 spin_lock_init(&priv->sta_lock);
8963 spin_lock_init(&priv->hcmd_lock);
8964 spin_lock_init(&priv->lq_mngr.lock);
8965
8966 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++)
8967 INIT_LIST_HEAD(&priv->ibss_mac_hash[i]);
8968
8969 INIT_LIST_HEAD(&priv->free_frames);
8970
8971 mutex_init(&priv->mutex);
8972 if (pci_enable_device(pdev)) {
8973 err = -ENODEV;
8974 goto out_ieee80211_free_hw;
8975 }
8976
8977 pci_set_master(pdev);
8978
8979 iwl_clear_stations_table(priv);
8980
8981 priv->data_retry_limit = -1;
8982 priv->ieee_channels = NULL;
8983 priv->ieee_rates = NULL;
8984 priv->phymode = -1;
8985
8986 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
8987 if (!err)
8988 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
8989 if (err) {
8990 printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n");
8991 goto out_pci_disable_device;
8992 }
8993
8994 pci_set_drvdata(pdev, priv);
8995 err = pci_request_regions(pdev, DRV_NAME);
8996 if (err)
8997 goto out_pci_disable_device;
8998 /* We disable the RETRY_TIMEOUT register (0x41) to keep
8999 * PCI Tx retries from interfering with C3 CPU state */
9000 pci_write_config_byte(pdev, 0x41, 0x00);
9001 priv->hw_base = pci_iomap(pdev, 0, 0);
9002 if (!priv->hw_base) {
9003 err = -ENODEV;
9004 goto out_pci_release_regions;
9005 }
9006
9007 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
9008 (unsigned long long) pci_resource_len(pdev, 0));
9009 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
9010
9011 /* Initialize module parameter values here */
9012
9013 if (iwl_param_disable) {
9014 set_bit(STATUS_RF_KILL_SW, &priv->status);
9015 IWL_DEBUG_INFO("Radio disabled.\n");
9016 }
9017
9018 priv->iw_mode = IEEE80211_IF_TYPE_STA;
9019
9020 priv->ps_mode = 0;
9021 priv->use_ant_b_for_management_frame = 1; /* start with ant B */
9022 priv->is_ht_enabled = 1;
9023 priv->channel_width = IWL_CHANNEL_WIDTH_40MHZ;
9024 priv->valid_antenna = 0x7; /* assume all 3 connected */
9025 priv->ps_mode = IWL_MIMO_PS_NONE;
9026 priv->cck_power_index_compensation = iwl_read32(
9027 priv, CSR_HW_REV_WA_REG);
9028
9029 iwl4965_set_rxon_chain(priv);
9030
9031 printk(KERN_INFO DRV_NAME
9032 ": Detected Intel Wireless WiFi Link 4965AGN\n");
9033
9034 /* Device-specific setup */
9035 if (iwl_hw_set_hw_setting(priv)) {
9036 IWL_ERROR("failed to set hw settings\n");
9037 mutex_unlock(&priv->mutex);
9038 goto out_iounmap;
9039 }
9040
9041#ifdef CONFIG_IWLWIFI_QOS
9042 if (iwl_param_qos_enable)
9043 priv->qos_data.qos_enable = 1;
9044
9045 iwl_reset_qos(priv);
9046
9047 priv->qos_data.qos_active = 0;
9048 priv->qos_data.qos_cap.val = 0;
9049#endif /* CONFIG_IWLWIFI_QOS */
9050
9051 iwl_set_rxon_channel(priv, MODE_IEEE80211G, 6);
9052 iwl_setup_deferred_work(priv);
9053 iwl_setup_rx_handlers(priv);
9054
9055 priv->rates_mask = IWL_RATES_MASK;
9056 /* If power management is turned on, default to AC mode */
9057 priv->power_mode = IWL_POWER_AC;
9058 priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
9059
9060 pci_enable_msi(pdev);
9061
9062 err = request_irq(pdev->irq, iwl_isr, IRQF_SHARED, DRV_NAME, priv);
9063 if (err) {
9064 IWL_ERROR("Error allocating IRQ %d\n", pdev->irq);
9065 goto out_disable_msi;
9066 }
9067
9068 mutex_lock(&priv->mutex);
9069
9070 err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
9071 if (err) {
9072 IWL_ERROR("failed to create sysfs device attributes\n");
9073 mutex_unlock(&priv->mutex);
9074 goto out_release_irq;
9075 }
9076
9077 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
9078 * ucode filename and max sizes are card-specific. */
9079 err = iwl_read_ucode(priv);
9080 if (err) {
9081 IWL_ERROR("Could not read microcode: %d\n", err);
9082 mutex_unlock(&priv->mutex);
9083 goto out_pci_alloc;
9084 }
9085
9086 mutex_unlock(&priv->mutex);
9087
9088 IWL_DEBUG_INFO("Queing UP work.\n");
9089
9090 queue_work(priv->workqueue, &priv->up);
9091
9092 return 0;
9093
9094 out_pci_alloc:
9095 iwl_dealloc_ucode_pci(priv);
9096
9097 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
9098
9099 out_release_irq:
9100 free_irq(pdev->irq, priv);
9101
9102 out_disable_msi:
9103 pci_disable_msi(pdev);
9104 destroy_workqueue(priv->workqueue);
9105 priv->workqueue = NULL;
9106 iwl_unset_hw_setting(priv);
9107
9108 out_iounmap:
9109 pci_iounmap(pdev, priv->hw_base);
9110 out_pci_release_regions:
9111 pci_release_regions(pdev);
9112 out_pci_disable_device:
9113 pci_disable_device(pdev);
9114 pci_set_drvdata(pdev, NULL);
9115 out_ieee80211_free_hw:
9116 ieee80211_free_hw(priv->hw);
9117 out:
9118 return err;
9119}
9120
9121static void iwl_pci_remove(struct pci_dev *pdev)
9122{
9123 struct iwl_priv *priv = pci_get_drvdata(pdev);
9124 struct list_head *p, *q;
9125 int i;
9126
9127 if (!priv)
9128 return;
9129
9130 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
9131
9132 mutex_lock(&priv->mutex);
9133 set_bit(STATUS_EXIT_PENDING, &priv->status);
9134 __iwl_down(priv);
9135 mutex_unlock(&priv->mutex);
9136
9137 /* Free MAC hash list for ADHOC */
9138 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
9139 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
9140 list_del(p);
9141 kfree(list_entry(p, struct iwl_ibss_seq, list));
9142 }
9143 }
9144
9145 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
9146
9147 iwl_dealloc_ucode_pci(priv);
9148
9149 if (priv->rxq.bd)
9150 iwl_rx_queue_free(priv, &priv->rxq);
9151 iwl_hw_txq_ctx_free(priv);
9152
9153 iwl_unset_hw_setting(priv);
9154 iwl_clear_stations_table(priv);
9155
9156 if (priv->mac80211_registered) {
9157 ieee80211_unregister_hw(priv->hw);
9158 iwl_rate_control_unregister(priv->hw);
9159 }
9160
9161 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
9162 * priv->workqueue... so we can't take down the workqueue
9163 * until now... */
9164 destroy_workqueue(priv->workqueue);
9165 priv->workqueue = NULL;
9166
9167 free_irq(pdev->irq, priv);
9168 pci_disable_msi(pdev);
9169 pci_iounmap(pdev, priv->hw_base);
9170 pci_release_regions(pdev);
9171 pci_disable_device(pdev);
9172 pci_set_drvdata(pdev, NULL);
9173
9174 kfree(priv->channel_info);
9175
9176 kfree(priv->ieee_channels);
9177 kfree(priv->ieee_rates);
9178
9179 if (priv->ibss_beacon)
9180 dev_kfree_skb(priv->ibss_beacon);
9181
9182 ieee80211_free_hw(priv->hw);
9183}
9184
9185#ifdef CONFIG_PM
9186
9187static int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
9188{
9189 struct iwl_priv *priv = pci_get_drvdata(pdev);
9190
9191 mutex_lock(&priv->mutex);
9192
9193 set_bit(STATUS_IN_SUSPEND, &priv->status);
9194
9195 /* Take down the device; powers it off, etc. */
9196 __iwl_down(priv);
9197
9198 if (priv->mac80211_registered)
9199 ieee80211_stop_queues(priv->hw);
9200
9201 pci_save_state(pdev);
9202 pci_disable_device(pdev);
9203 pci_set_power_state(pdev, PCI_D3hot);
9204
9205 mutex_unlock(&priv->mutex);
9206
9207 return 0;
9208}
9209
9210static void iwl_resume(struct iwl_priv *priv)
9211{
9212 unsigned long flags;
9213
9214 /* The following it a temporary work around due to the
9215 * suspend / resume not fully initializing the NIC correctly.
9216 * Without all of the following, resume will not attempt to take
9217 * down the NIC (it shouldn't really need to) and will just try
9218 * and bring the NIC back up. However that fails during the
9219 * ucode verification process. This then causes iwl_down to be
9220 * called *after* iwl_hw_nic_init() has succeeded -- which
9221 * then lets the next init sequence succeed. So, we've
9222 * replicated all of that NIC init code here... */
9223
9224 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
9225
9226 iwl_hw_nic_init(priv);
9227
9228 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
9229 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
9230 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
9231 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
9232 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
9233 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
9234
9235 /* tell the device to stop sending interrupts */
9236 iwl_disable_interrupts(priv);
9237
9238 spin_lock_irqsave(&priv->lock, flags);
9239 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
9240
9241 if (!iwl_grab_restricted_access(priv)) {
9242 iwl_write_restricted_reg(priv, APMG_CLK_DIS_REG,
9243 APMG_CLK_VAL_DMA_CLK_RQT);
9244 iwl_release_restricted_access(priv);
9245 }
9246 spin_unlock_irqrestore(&priv->lock, flags);
9247
9248 udelay(5);
9249
9250 iwl_hw_nic_reset(priv);
9251
9252 /* Bring the device back up */
9253 clear_bit(STATUS_IN_SUSPEND, &priv->status);
9254 queue_work(priv->workqueue, &priv->up);
9255}
9256
9257static int iwl_pci_resume(struct pci_dev *pdev)
9258{
9259 struct iwl_priv *priv = pci_get_drvdata(pdev);
9260 int err;
9261
9262 printk(KERN_INFO "Coming out of suspend...\n");
9263
9264 mutex_lock(&priv->mutex);
9265
9266 pci_set_power_state(pdev, PCI_D0);
9267 err = pci_enable_device(pdev);
9268 pci_restore_state(pdev);
9269
9270 /*
9271 * Suspend/Resume resets the PCI configuration space, so we have to
9272 * re-disable the RETRY_TIMEOUT register (0x41) to keep PCI Tx retries
9273 * from interfering with C3 CPU state. pci_restore_state won't help
9274 * here since it only restores the first 64 bytes pci config header.
9275 */
9276 pci_write_config_byte(pdev, 0x41, 0x00);
9277
9278 iwl_resume(priv);
9279 mutex_unlock(&priv->mutex);
9280
9281 return 0;
9282}
9283
9284#endif /* CONFIG_PM */
9285
9286/*****************************************************************************
9287 *
9288 * driver and module entry point
9289 *
9290 *****************************************************************************/
9291
9292static struct pci_driver iwl_driver = {
9293 .name = DRV_NAME,
9294 .id_table = iwl_hw_card_ids,
9295 .probe = iwl_pci_probe,
9296 .remove = __devexit_p(iwl_pci_remove),
9297#ifdef CONFIG_PM
9298 .suspend = iwl_pci_suspend,
9299 .resume = iwl_pci_resume,
9300#endif
9301};
9302
9303static int __init iwl_init(void)
9304{
9305
9306 int ret;
9307 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
9308 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
9309 ret = pci_register_driver(&iwl_driver);
9310 if (ret) {
9311 IWL_ERROR("Unable to initialize PCI module\n");
9312 return ret;
9313 }
9314#ifdef CONFIG_IWLWIFI_DEBUG
9315 ret = driver_create_file(&iwl_driver.driver, &driver_attr_debug_level);
9316 if (ret) {
9317 IWL_ERROR("Unable to create driver sysfs file\n");
9318 pci_unregister_driver(&iwl_driver);
9319 return ret;
9320 }
9321#endif
9322
9323 return ret;
9324}
9325
9326static void __exit iwl_exit(void)
9327{
9328#ifdef CONFIG_IWLWIFI_DEBUG
9329 driver_remove_file(&iwl_driver.driver, &driver_attr_debug_level);
9330#endif
9331 pci_unregister_driver(&iwl_driver);
9332}
9333
9334module_param_named(antenna, iwl_param_antenna, int, 0444);
9335MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
9336module_param_named(disable, iwl_param_disable, int, 0444);
9337MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
9338module_param_named(hwcrypto, iwl_param_hwcrypto, int, 0444);
9339MODULE_PARM_DESC(hwcrypto,
9340 "using hardware crypto engine (default 0 [software])\n");
9341module_param_named(debug, iwl_param_debug, int, 0444);
9342MODULE_PARM_DESC(debug, "debug output mask");
9343module_param_named(disable_hw_scan, iwl_param_disable_hw_scan, int, 0444);
9344MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
9345
9346module_param_named(queues_num, iwl_param_queues_num, int, 0444);
9347MODULE_PARM_DESC(queues_num, "number of hw queues.");
9348
9349/* QoS */
9350module_param_named(qos_enable, iwl_param_qos_enable, int, 0444);
9351MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
9352
9353module_exit(iwl_exit);
9354module_init(iwl_init);
Linux kernel - Deliverables
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