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[PATCH] iwlwifi: workaournd REPLY_COMPRESSED_BA command in iwl_rx_handle
[net-next-2.6.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 *
583fab37 206 * The IWL operates with six queues, one receive queue in the device's
b481de9c
ZY		 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) &&
cfe01709 4616 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
b481de9c
ZY		 4617 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
4618 (pkt->hdr.cmd != REPLY_TX);
4619
4620 /* Based on type of command response or notification,
4621 * handle those that need handling via function in
4622 * rx_handlers table. See iwl_setup_rx_handlers() */
4623 if (priv->rx_handlers[pkt->hdr.cmd]) {
4624 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4625 "r = %d, i = %d, %s, 0x%02x\n", r, i,
4626 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
4627 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
4628 } else {
4629 /* No handling needed */
4630 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4631 "r %d i %d No handler needed for %s, 0x%02x\n",
4632 r, i, get_cmd_string(pkt->hdr.cmd),
4633 pkt->hdr.cmd);
4634 }
4635
4636 if (reclaim) {
4637 /* Invoke any callbacks, transfer the skb to caller,
4638 * and fire off the (possibly) blocking iwl_send_cmd()
4639 * as we reclaim the driver command queue */
4640 if (rxb && rxb->skb)
4641 iwl_tx_cmd_complete(priv, rxb);
4642 else
4643 IWL_WARNING("Claim null rxb?\n");
4644 }
4645
4646 /* For now we just don't re-use anything. We can tweak this
4647 * later to try and re-use notification packets and SKBs that
4648 * fail to Rx correctly */
4649 if (rxb->skb != NULL) {
4650 priv->alloc_rxb_skb--;
4651 dev_kfree_skb_any(rxb->skb);
4652 rxb->skb = NULL;
4653 }
4654
4655 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
4656 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4657 spin_lock_irqsave(&rxq->lock, flags);
4658 list_add_tail(&rxb->list, &priv->rxq.rx_used);
4659 spin_unlock_irqrestore(&rxq->lock, flags);
4660 i = (i + 1) & RX_QUEUE_MASK;
4661 }
4662
4663 /* Backtrack one entry */
4664 priv->rxq.read = i;
4665 iwl_rx_queue_restock(priv);
4666}
4667
4668int iwl_tx_queue_update_write_ptr(struct iwl_priv *priv,
4669 struct iwl_tx_queue *txq)
4670{
4671 u32 reg = 0;
4672 int rc = 0;
4673 int txq_id = txq->q.id;
4674
4675 if (txq->need_update == 0)
4676 return rc;
4677
4678 /* if we're trying to save power */
4679 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4680 /* wake up nic if it's powered down ...
4681 * uCode will wake up, and interrupt us again, so next
4682 * time we'll skip this part. */
4683 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
4684
4685 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4686 IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4687 iwl_set_bit(priv, CSR_GP_CNTRL,
4688 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4689 return rc;
4690 }
4691
4692 /* restore this queue's parameters in nic hardware. */
4693 rc = iwl_grab_restricted_access(priv);
4694 if (rc)
4695 return rc;
4696 iwl_write_restricted(priv, HBUS_TARG_WRPTR,
4697 txq->q.first_empty | (txq_id << 8));
4698 iwl_release_restricted_access(priv);
4699
4700 /* else not in power-save mode, uCode will never sleep when we're
4701 * trying to tx (during RFKILL, we're not trying to tx). */
4702 } else
4703 iwl_write32(priv, HBUS_TARG_WRPTR,
4704 txq->q.first_empty | (txq_id << 8));
4705
4706 txq->need_update = 0;
4707
4708 return rc;
4709}
4710
4711#ifdef CONFIG_IWLWIFI_DEBUG
4712static void iwl_print_rx_config_cmd(struct iwl_rxon_cmd *rxon)
4713{
0795af57
JP		 4714 DECLARE_MAC_BUF(mac);
4715
b481de9c
ZY		 4716 IWL_DEBUG_RADIO("RX CONFIG:\n");
4717 iwl_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4718 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4719 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4720 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4721 le32_to_cpu(rxon->filter_flags));
4722 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4723 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4724 rxon->ofdm_basic_rates);
4725 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
0795af57
JP		 4726 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4727 print_mac(mac, rxon->node_addr));
4728 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4729 print_mac(mac, rxon->bssid_addr));
b481de9c
ZY		 4730 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4731}
4732#endif
4733
4734static void iwl_enable_interrupts(struct iwl_priv *priv)
4735{
4736 IWL_DEBUG_ISR("Enabling interrupts\n");
4737 set_bit(STATUS_INT_ENABLED, &priv->status);
4738 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4739}
4740
4741static inline void iwl_disable_interrupts(struct iwl_priv *priv)
4742{
4743 clear_bit(STATUS_INT_ENABLED, &priv->status);
4744
4745 /* disable interrupts from uCode/NIC to host */
4746 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
4747
4748 /* acknowledge/clear/reset any interrupts still pending
4749 * from uCode or flow handler (Rx/Tx DMA) */
4750 iwl_write32(priv, CSR_INT, 0xffffffff);
4751 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4752 IWL_DEBUG_ISR("Disabled interrupts\n");
4753}
4754
4755static const char *desc_lookup(int i)
4756{
4757 switch (i) {
4758 case 1:
4759 return "FAIL";
4760 case 2:
4761 return "BAD_PARAM";
4762 case 3:
4763 return "BAD_CHECKSUM";
4764 case 4:
4765 return "NMI_INTERRUPT";
4766 case 5:
4767 return "SYSASSERT";
4768 case 6:
4769 return "FATAL_ERROR";
4770 }
4771
4772 return "UNKNOWN";
4773}
4774
4775#define ERROR_START_OFFSET (1 * sizeof(u32))
4776#define ERROR_ELEM_SIZE (7 * sizeof(u32))
4777
4778static void iwl_dump_nic_error_log(struct iwl_priv *priv)
4779{
4780 u32 data2, line;
4781 u32 desc, time, count, base, data1;
4782 u32 blink1, blink2, ilink1, ilink2;
4783 int rc;
4784
4785 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4786
4787 if (!iwl_hw_valid_rtc_data_addr(base)) {
4788 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4789 return;
4790 }
4791
4792 rc = iwl_grab_restricted_access(priv);
4793 if (rc) {
4794 IWL_WARNING("Can not read from adapter at this time.\n");
4795 return;
4796 }
4797
4798 count = iwl_read_restricted_mem(priv, base);
4799
4800 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4801 IWL_ERROR("Start IWL Error Log Dump:\n");
4802 IWL_ERROR("Status: 0x%08lX, Config: %08X count: %d\n",
4803 priv->status, priv->config, count);
4804 }
4805
4806 desc = iwl_read_restricted_mem(priv, base + 1 * sizeof(u32));
4807 blink1 = iwl_read_restricted_mem(priv, base + 3 * sizeof(u32));
4808 blink2 = iwl_read_restricted_mem(priv, base + 4 * sizeof(u32));
4809 ilink1 = iwl_read_restricted_mem(priv, base + 5 * sizeof(u32));
4810 ilink2 = iwl_read_restricted_mem(priv, base + 6 * sizeof(u32));
4811 data1 = iwl_read_restricted_mem(priv, base + 7 * sizeof(u32));
4812 data2 = iwl_read_restricted_mem(priv, base + 8 * sizeof(u32));
4813 line = iwl_read_restricted_mem(priv, base + 9 * sizeof(u32));
4814 time = iwl_read_restricted_mem(priv, base + 11 * sizeof(u32));
4815
4816 IWL_ERROR("Desc Time "
4817 "data1 data2 line\n");
4818 IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
4819 desc_lookup(desc), desc, time, data1, data2, line);
4820 IWL_ERROR("blink1 blink2 ilink1 ilink2\n");
4821 IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
4822 ilink1, ilink2);
4823
4824 iwl_release_restricted_access(priv);
4825}
4826
4827#define EVENT_START_OFFSET (4 * sizeof(u32))
4828
4829/**
4830 * iwl_print_event_log - Dump error event log to syslog
4831 *
4832 * NOTE: Must be called with iwl_grab_restricted_access() already obtained!
4833 */
4834static void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
4835 u32 num_events, u32 mode)
4836{
4837 u32 i;
4838 u32 base; /* SRAM byte address of event log header */
4839 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4840 u32 ptr; /* SRAM byte address of log data */
4841 u32 ev, time, data; /* event log data */
4842
4843 if (num_events == 0)
4844 return;
4845
4846 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4847
4848 if (mode == 0)
4849 event_size = 2 * sizeof(u32);
4850 else
4851 event_size = 3 * sizeof(u32);
4852
4853 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4854
4855 /* "time" is actually "data" for mode 0 (no timestamp).
4856 * place event id # at far right for easier visual parsing. */
4857 for (i = 0; i < num_events; i++) {
4858 ev = iwl_read_restricted_mem(priv, ptr);
4859 ptr += sizeof(u32);
4860 time = iwl_read_restricted_mem(priv, ptr);
4861 ptr += sizeof(u32);
4862 if (mode == 0)
4863 IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4864 else {
4865 data = iwl_read_restricted_mem(priv, ptr);
4866 ptr += sizeof(u32);
4867 IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4868 }
4869 }
4870}
4871
4872static void iwl_dump_nic_event_log(struct iwl_priv *priv)
4873{
4874 int rc;
4875 u32 base; /* SRAM byte address of event log header */
4876 u32 capacity; /* event log capacity in # entries */
4877 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
4878 u32 num_wraps; /* # times uCode wrapped to top of log */
4879 u32 next_entry; /* index of next entry to be written by uCode */
4880 u32 size; /* # entries that we'll print */
4881
4882 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4883 if (!iwl_hw_valid_rtc_data_addr(base)) {
4884 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4885 return;
4886 }
4887
4888 rc = iwl_grab_restricted_access(priv);
4889 if (rc) {
4890 IWL_WARNING("Can not read from adapter at this time.\n");
4891 return;
4892 }
4893
4894 /* event log header */
4895 capacity = iwl_read_restricted_mem(priv, base);
4896 mode = iwl_read_restricted_mem(priv, base + (1 * sizeof(u32)));
4897 num_wraps = iwl_read_restricted_mem(priv, base + (2 * sizeof(u32)));
4898 next_entry = iwl_read_restricted_mem(priv, base + (3 * sizeof(u32)));
4899
4900 size = num_wraps ? capacity : next_entry;
4901
4902 /* bail out if nothing in log */
4903 if (size == 0) {
583fab37 4904 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
b481de9c
ZY		 4905 iwl_release_restricted_access(priv);
4906 return;
4907 }
4908
583fab37 4909 IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
b481de9c
ZY		 4910 size, num_wraps);
4911
4912 /* if uCode has wrapped back to top of log, start at the oldest entry,
4913 * i.e the next one that uCode would fill. */
4914 if (num_wraps)
4915 iwl_print_event_log(priv, next_entry,
4916 capacity - next_entry, mode);
4917
4918 /* (then/else) start at top of log */
4919 iwl_print_event_log(priv, 0, next_entry, mode);
4920
4921 iwl_release_restricted_access(priv);
4922}
4923
4924/**
4925 * iwl_irq_handle_error - called for HW or SW error interrupt from card
4926 */
4927static void iwl_irq_handle_error(struct iwl_priv *priv)
4928{
4929 /* Set the FW error flag -- cleared on iwl_down */
4930 set_bit(STATUS_FW_ERROR, &priv->status);
4931
4932 /* Cancel currently queued command. */
4933 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4934
4935#ifdef CONFIG_IWLWIFI_DEBUG
4936 if (iwl_debug_level & IWL_DL_FW_ERRORS) {
4937 iwl_dump_nic_error_log(priv);
4938 iwl_dump_nic_event_log(priv);
4939 iwl_print_rx_config_cmd(&priv->staging_rxon);
4940 }
4941#endif
4942
4943 wake_up_interruptible(&priv->wait_command_queue);
4944
4945 /* Keep the restart process from trying to send host
4946 * commands by clearing the INIT status bit */
4947 clear_bit(STATUS_READY, &priv->status);
4948
4949 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4950 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
4951 "Restarting adapter due to uCode error.\n");
4952
4953 if (iwl_is_associated(priv)) {
4954 memcpy(&priv->recovery_rxon, &priv->active_rxon,
4955 sizeof(priv->recovery_rxon));
4956 priv->error_recovering = 1;
4957 }
4958 queue_work(priv->workqueue, &priv->restart);
4959 }
4960}
4961
4962static void iwl_error_recovery(struct iwl_priv *priv)
4963{
4964 unsigned long flags;
4965
4966 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
4967 sizeof(priv->staging_rxon));
4968 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4969 iwl_commit_rxon(priv);
4970
4971 iwl_rxon_add_station(priv, priv->bssid, 1);
4972
4973 spin_lock_irqsave(&priv->lock, flags);
4974 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
4975 priv->error_recovering = 0;
4976 spin_unlock_irqrestore(&priv->lock, flags);
4977}
4978
4979static void iwl_irq_tasklet(struct iwl_priv *priv)
4980{
4981 u32 inta, handled = 0;
4982 u32 inta_fh;
4983 unsigned long flags;
4984#ifdef CONFIG_IWLWIFI_DEBUG
4985 u32 inta_mask;
4986#endif
4987
4988 spin_lock_irqsave(&priv->lock, flags);
4989
4990 /* Ack/clear/reset pending uCode interrupts.
4991 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4992 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
4993 inta = iwl_read32(priv, CSR_INT);
4994 iwl_write32(priv, CSR_INT, inta);
4995
4996 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4997 * Any new interrupts that happen after this, either while we're
4998 * in this tasklet, or later, will show up in next ISR/tasklet. */
4999 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
5000 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
5001
5002#ifdef CONFIG_IWLWIFI_DEBUG
5003 if (iwl_debug_level & IWL_DL_ISR) {
5004 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
5005 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5006 inta, inta_mask, inta_fh);
5007 }
5008#endif
5009
5010 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
5011 * atomic, make sure that inta covers all the interrupts that
5012 * we've discovered, even if FH interrupt came in just after
5013 * reading CSR_INT. */
5014 if (inta_fh & CSR_FH_INT_RX_MASK)
5015 inta |= CSR_INT_BIT_FH_RX;
5016 if (inta_fh & CSR_FH_INT_TX_MASK)
5017 inta |= CSR_INT_BIT_FH_TX;
5018
5019 /* Now service all interrupt bits discovered above. */
5020 if (inta & CSR_INT_BIT_HW_ERR) {
5021 IWL_ERROR("Microcode HW error detected. Restarting.\n");
5022
5023 /* Tell the device to stop sending interrupts */
5024 iwl_disable_interrupts(priv);
5025
5026 iwl_irq_handle_error(priv);
5027
5028 handled |= CSR_INT_BIT_HW_ERR;
5029
5030 spin_unlock_irqrestore(&priv->lock, flags);
5031
5032 return;
5033 }
5034
5035#ifdef CONFIG_IWLWIFI_DEBUG
5036 if (iwl_debug_level & (IWL_DL_ISR)) {
5037 /* NIC fires this, but we don't use it, redundant with WAKEUP */
5038 if (inta & CSR_INT_BIT_MAC_CLK_ACTV)
5039 IWL_DEBUG_ISR("Microcode started or stopped.\n");
5040
5041 /* Alive notification via Rx interrupt will do the real work */
5042 if (inta & CSR_INT_BIT_ALIVE)
5043 IWL_DEBUG_ISR("Alive interrupt\n");
5044 }
5045#endif
5046 /* Safely ignore these bits for debug checks below */
5047 inta &= ~(CSR_INT_BIT_MAC_CLK_ACTV | CSR_INT_BIT_ALIVE);
5048
5049 /* HW RF KILL switch toggled (4965 only) */
5050 if (inta & CSR_INT_BIT_RF_KILL) {
5051 int hw_rf_kill = 0;
5052 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
5053 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
5054 hw_rf_kill = 1;
5055
5056 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
5057 "RF_KILL bit toggled to %s.\n",
5058 hw_rf_kill ? "disable radio":"enable radio");
5059
5060 /* Queue restart only if RF_KILL switch was set to "kill"
5061 * when we loaded driver, and is now set to "enable".
5062 * After we're Alive, RF_KILL gets handled by
5063 * iwl_rx_card_state_notif() */
5064 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
5065 queue_work(priv->workqueue, &priv->restart);
5066
5067 handled |= CSR_INT_BIT_RF_KILL;
5068 }
5069
5070 /* Chip got too hot and stopped itself (4965 only) */
5071 if (inta & CSR_INT_BIT_CT_KILL) {
5072 IWL_ERROR("Microcode CT kill error detected.\n");
5073 handled |= CSR_INT_BIT_CT_KILL;
5074 }
5075
5076 /* Error detected by uCode */
5077 if (inta & CSR_INT_BIT_SW_ERR) {
5078 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
5079 inta);
5080 iwl_irq_handle_error(priv);
5081 handled |= CSR_INT_BIT_SW_ERR;
5082 }
5083
5084 /* uCode wakes up after power-down sleep */
5085 if (inta & CSR_INT_BIT_WAKEUP) {
5086 IWL_DEBUG_ISR("Wakeup interrupt\n");
5087 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
5088 iwl_tx_queue_update_write_ptr(priv, &priv->txq[0]);
5089 iwl_tx_queue_update_write_ptr(priv, &priv->txq[1]);
5090 iwl_tx_queue_update_write_ptr(priv, &priv->txq[2]);
5091 iwl_tx_queue_update_write_ptr(priv, &priv->txq[3]);
5092 iwl_tx_queue_update_write_ptr(priv, &priv->txq[4]);
5093 iwl_tx_queue_update_write_ptr(priv, &priv->txq[5]);
5094
5095 handled |= CSR_INT_BIT_WAKEUP;
5096 }
5097
5098 /* All uCode command responses, including Tx command responses,
5099 * Rx "responses" (frame-received notification), and other
5100 * notifications from uCode come through here*/
5101 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
5102 iwl_rx_handle(priv);
5103 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
5104 }
5105
5106 if (inta & CSR_INT_BIT_FH_TX) {
5107 IWL_DEBUG_ISR("Tx interrupt\n");
5108 handled |= CSR_INT_BIT_FH_TX;
5109 }
5110
5111 if (inta & ~handled)
5112 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
5113
5114 if (inta & ~CSR_INI_SET_MASK) {
5115 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
5116 inta & ~CSR_INI_SET_MASK);
5117 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
5118 }
5119
5120 /* Re-enable all interrupts */
5121 iwl_enable_interrupts(priv);
5122
5123#ifdef CONFIG_IWLWIFI_DEBUG
5124 if (iwl_debug_level & (IWL_DL_ISR)) {
5125 inta = iwl_read32(priv, CSR_INT);
5126 inta_mask = iwl_read32(priv, CSR_INT_MASK);
5127 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
5128 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
5129 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
5130 }
5131#endif
5132 spin_unlock_irqrestore(&priv->lock, flags);
5133}
5134
5135static irqreturn_t iwl_isr(int irq, void *data)
5136{
5137 struct iwl_priv *priv = data;
5138 u32 inta, inta_mask;
5139 u32 inta_fh;
5140 if (!priv)
5141 return IRQ_NONE;
5142
5143 spin_lock(&priv->lock);
5144
5145 /* Disable (but don't clear!) interrupts here to avoid
5146 * back-to-back ISRs and sporadic interrupts from our NIC.
5147 * If we have something to service, the tasklet will re-enable ints.
5148 * If we *don't* have something, we'll re-enable before leaving here. */
5149 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
5150 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
5151
5152 /* Discover which interrupts are active/pending */
5153 inta = iwl_read32(priv, CSR_INT);
5154 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
5155
5156 /* Ignore interrupt if there's nothing in NIC to service.
5157 * This may be due to IRQ shared with another device,
5158 * or due to sporadic interrupts thrown from our NIC. */
5159 if (!inta && !inta_fh) {
5160 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
5161 goto none;
5162 }
5163
5164 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
5165 /* Hardware disappeared */
5166 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
5167 goto none;
5168 }
5169
5170 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5171 inta, inta_mask, inta_fh);
5172
5173 /* iwl_irq_tasklet() will service interrupts and re-enable them */
5174 tasklet_schedule(&priv->irq_tasklet);
5175 spin_unlock(&priv->lock);
5176
5177 return IRQ_HANDLED;
5178
5179 none:
5180 /* re-enable interrupts here since we don't have anything to service. */
5181 iwl_enable_interrupts(priv);
5182 spin_unlock(&priv->lock);
5183 return IRQ_NONE;
5184}
5185
5186/************************** EEPROM BANDS ****************************
5187 *
5188 * The iwl_eeprom_band definitions below provide the mapping from the
5189 * EEPROM contents to the specific channel number supported for each
5190 * band.
5191 *
5192 * For example, iwl_priv->eeprom.band_3_channels[4] from the band_3
5193 * definition below maps to physical channel 42 in the 5.2GHz spectrum.
5194 * The specific geography and calibration information for that channel
5195 * is contained in the eeprom map itself.
5196 *
5197 * During init, we copy the eeprom information and channel map
5198 * information into priv->channel_info_24/52 and priv->channel_map_24/52
5199 *
5200 * channel_map_24/52 provides the index in the channel_info array for a
5201 * given channel. We have to have two separate maps as there is channel
5202 * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
5203 * band_2
5204 *
5205 * A value of 0xff stored in the channel_map indicates that the channel
5206 * is not supported by the hardware at all.
5207 *
5208 * A value of 0xfe in the channel_map indicates that the channel is not
5209 * valid for Tx with the current hardware. This means that
5210 * while the system can tune and receive on a given channel, it may not
5211 * be able to associate or transmit any frames on that
5212 * channel. There is no corresponding channel information for that
5213 * entry.
5214 *
5215 *********************************************************************/
5216
5217/* 2.4 GHz */
5218static const u8 iwl_eeprom_band_1[14] = {
5219 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
5220};
5221
5222/* 5.2 GHz bands */
5223static const u8 iwl_eeprom_band_2[] = {
5224 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
5225};
5226
5227static const u8 iwl_eeprom_band_3[] = { /* 5205-5320MHz */
5228 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
5229};
5230
5231static const u8 iwl_eeprom_band_4[] = { /* 5500-5700MHz */
5232 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
5233};
5234
5235static const u8 iwl_eeprom_band_5[] = { /* 5725-5825MHz */
5236 145, 149, 153, 157, 161, 165
5237};
5238
5239static u8 iwl_eeprom_band_6[] = { /* 2.4 FAT channel */
5240 1, 2, 3, 4, 5, 6, 7
5241};
5242
5243static u8 iwl_eeprom_band_7[] = { /* 5.2 FAT channel */
5244 36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157
5245};
5246
5247static void iwl_init_band_reference(const struct iwl_priv *priv, int band,
5248 int *eeprom_ch_count,
5249 const struct iwl_eeprom_channel
5250 **eeprom_ch_info,
5251 const u8 **eeprom_ch_index)
5252{
5253 switch (band) {
5254 case 1: /* 2.4GHz band */
5255 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_1);
5256 *eeprom_ch_info = priv->eeprom.band_1_channels;
5257 *eeprom_ch_index = iwl_eeprom_band_1;
5258 break;
5259 case 2: /* 5.2GHz band */
5260 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_2);
5261 *eeprom_ch_info = priv->eeprom.band_2_channels;
5262 *eeprom_ch_index = iwl_eeprom_band_2;
5263 break;
5264 case 3: /* 5.2GHz band */
5265 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_3);
5266 *eeprom_ch_info = priv->eeprom.band_3_channels;
5267 *eeprom_ch_index = iwl_eeprom_band_3;
5268 break;
5269 case 4: /* 5.2GHz band */
5270 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_4);
5271 *eeprom_ch_info = priv->eeprom.band_4_channels;
5272 *eeprom_ch_index = iwl_eeprom_band_4;
5273 break;
5274 case 5: /* 5.2GHz band */
5275 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_5);
5276 *eeprom_ch_info = priv->eeprom.band_5_channels;
5277 *eeprom_ch_index = iwl_eeprom_band_5;
5278 break;
5279 case 6:
5280 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_6);
5281 *eeprom_ch_info = priv->eeprom.band_24_channels;
5282 *eeprom_ch_index = iwl_eeprom_band_6;
5283 break;
5284 case 7:
5285 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_7);
5286 *eeprom_ch_info = priv->eeprom.band_52_channels;
5287 *eeprom_ch_index = iwl_eeprom_band_7;
5288 break;
5289 default:
5290 BUG();
5291 return;
5292 }
5293}
5294
5295const struct iwl_channel_info *iwl_get_channel_info(const struct iwl_priv *priv,
5296 int phymode, u16 channel)
5297{
5298 int i;
5299
5300 switch (phymode) {
5301 case MODE_IEEE80211A:
5302 for (i = 14; i < priv->channel_count; i++) {
5303 if (priv->channel_info[i].channel == channel)
5304 return &priv->channel_info[i];
5305 }
5306 break;
5307
5308 case MODE_IEEE80211B:
5309 case MODE_IEEE80211G:
5310 if (channel >= 1 && channel <= 14)
5311 return &priv->channel_info[channel - 1];
5312 break;
5313
5314 }
5315
5316 return NULL;
5317}
5318
5319#define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
5320 ? # x " " : "")
5321
5322static int iwl_init_channel_map(struct iwl_priv *priv)
5323{
5324 int eeprom_ch_count = 0;
5325 const u8 *eeprom_ch_index = NULL;
5326 const struct iwl_eeprom_channel *eeprom_ch_info = NULL;
5327 int band, ch;
5328 struct iwl_channel_info *ch_info;
5329
5330 if (priv->channel_count) {
5331 IWL_DEBUG_INFO("Channel map already initialized.\n");
5332 return 0;
5333 }
5334
5335 if (priv->eeprom.version < 0x2f) {
5336 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
5337 priv->eeprom.version);
5338 return -EINVAL;
5339 }
5340
5341 IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
5342
5343 priv->channel_count =
5344 ARRAY_SIZE(iwl_eeprom_band_1) +
5345 ARRAY_SIZE(iwl_eeprom_band_2) +
5346 ARRAY_SIZE(iwl_eeprom_band_3) +
5347 ARRAY_SIZE(iwl_eeprom_band_4) +
5348 ARRAY_SIZE(iwl_eeprom_band_5);
5349
5350 IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
5351
5352 priv->channel_info = kzalloc(sizeof(struct iwl_channel_info) *
5353 priv->channel_count, GFP_KERNEL);
5354 if (!priv->channel_info) {
5355 IWL_ERROR("Could not allocate channel_info\n");
5356 priv->channel_count = 0;
5357 return -ENOMEM;
5358 }
5359
5360 ch_info = priv->channel_info;
5361
5362 /* Loop through the 5 EEPROM bands adding them in order to the
5363 * channel map we maintain (that contains additional information than
5364 * what just in the EEPROM) */
5365 for (band = 1; band <= 5; band++) {
5366
5367 iwl_init_band_reference(priv, band, &eeprom_ch_count,
5368 &eeprom_ch_info, &eeprom_ch_index);
5369
5370 /* Loop through each band adding each of the channels */
5371 for (ch = 0; ch < eeprom_ch_count; ch++) {
5372 ch_info->channel = eeprom_ch_index[ch];
5373 ch_info->phymode = (band == 1) ? MODE_IEEE80211B :
5374 MODE_IEEE80211A;
5375
5376 /* permanently store EEPROM's channel regulatory flags
5377 * and max power in channel info database. */
5378 ch_info->eeprom = eeprom_ch_info[ch];
5379
5380 /* Copy the run-time flags so they are there even on
5381 * invalid channels */
5382 ch_info->flags = eeprom_ch_info[ch].flags;
5383
5384 if (!(is_channel_valid(ch_info))) {
5385 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
5386 "No traffic\n",
5387 ch_info->channel,
5388 ch_info->flags,
5389 is_channel_a_band(ch_info) ?
5390 "5.2" : "2.4");
5391 ch_info++;
5392 continue;
5393 }
5394
5395 /* Initialize regulatory-based run-time data */
5396 ch_info->max_power_avg = ch_info->curr_txpow =
5397 eeprom_ch_info[ch].max_power_avg;
5398 ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
5399 ch_info->min_power = 0;
5400
5401 IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
5402 " %ddBm): Ad-Hoc %ssupported\n",
5403 ch_info->channel,
5404 is_channel_a_band(ch_info) ?
5405 "5.2" : "2.4",
5406 CHECK_AND_PRINT(IBSS),
5407 CHECK_AND_PRINT(ACTIVE),
5408 CHECK_AND_PRINT(RADAR),
5409 CHECK_AND_PRINT(WIDE),
5410 CHECK_AND_PRINT(NARROW),
5411 CHECK_AND_PRINT(DFS),
5412 eeprom_ch_info[ch].flags,
5413 eeprom_ch_info[ch].max_power_avg,
5414 ((eeprom_ch_info[ch].
5415 flags & EEPROM_CHANNEL_IBSS)
5416 && !(eeprom_ch_info[ch].
5417 flags & EEPROM_CHANNEL_RADAR))
5418 ? "" : "not ");
5419
5420 /* Set the user_txpower_limit to the highest power
5421 * supported by any channel */
5422 if (eeprom_ch_info[ch].max_power_avg >
5423 priv->user_txpower_limit)
5424 priv->user_txpower_limit =
5425 eeprom_ch_info[ch].max_power_avg;
5426
5427 ch_info++;
5428 }
5429 }
5430
5431 for (band = 6; band <= 7; band++) {
5432 int phymode;
5433 u8 fat_extension_chan;
5434
5435 iwl_init_band_reference(priv, band, &eeprom_ch_count,
5436 &eeprom_ch_info, &eeprom_ch_index);
5437
5438 phymode = (band == 6) ? MODE_IEEE80211B : MODE_IEEE80211A;
5439 /* Loop through each band adding each of the channels */
5440 for (ch = 0; ch < eeprom_ch_count; ch++) {
5441
5442 if ((band == 6) &&
5443 ((eeprom_ch_index[ch] == 5) ||
5444 (eeprom_ch_index[ch] == 6) ||
5445 (eeprom_ch_index[ch] == 7)))
5446 fat_extension_chan = HT_IE_EXT_CHANNEL_MAX;
5447 else
5448 fat_extension_chan = HT_IE_EXT_CHANNEL_ABOVE;
5449
5450 iwl4965_set_fat_chan_info(priv, phymode,
5451 eeprom_ch_index[ch],
5452 &(eeprom_ch_info[ch]),
5453 fat_extension_chan);
5454
5455 iwl4965_set_fat_chan_info(priv, phymode,
5456 (eeprom_ch_index[ch] + 4),
5457 &(eeprom_ch_info[ch]),
5458 HT_IE_EXT_CHANNEL_BELOW);
5459 }
5460 }
5461
5462 return 0;
5463}
5464
5465/* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
5466 * sending probe req. This should be set long enough to hear probe responses
5467 * from more than one AP. */
5468#define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
5469#define IWL_ACTIVE_DWELL_TIME_52 (10)
5470
5471/* For faster active scanning, scan will move to the next channel if fewer than
5472 * PLCP_QUIET_THRESH packets are heard on this channel within
5473 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
5474 * time if it's a quiet channel (nothing responded to our probe, and there's
5475 * no other traffic).
5476 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
5477#define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
5478#define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
5479
5480/* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
5481 * Must be set longer than active dwell time.
5482 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
5483#define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
5484#define IWL_PASSIVE_DWELL_TIME_52 (10)
5485#define IWL_PASSIVE_DWELL_BASE (100)
5486#define IWL_CHANNEL_TUNE_TIME 5
5487
5488static inline u16 iwl_get_active_dwell_time(struct iwl_priv *priv, int phymode)
5489{
5490 if (phymode == MODE_IEEE80211A)
5491 return IWL_ACTIVE_DWELL_TIME_52;
5492 else
5493 return IWL_ACTIVE_DWELL_TIME_24;
5494}
5495
5496static u16 iwl_get_passive_dwell_time(struct iwl_priv *priv, int phymode)
5497{
5498 u16 active = iwl_get_active_dwell_time(priv, phymode);
5499 u16 passive = (phymode != MODE_IEEE80211A) ?
5500 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
5501 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
5502
5503 if (iwl_is_associated(priv)) {
5504 /* If we're associated, we clamp the maximum passive
5505 * dwell time to be 98% of the beacon interval (minus
5506 * 2 * channel tune time) */
5507 passive = priv->beacon_int;
5508 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
5509 passive = IWL_PASSIVE_DWELL_BASE;
5510 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
5511 }
5512
5513 if (passive <= active)
5514 passive = active + 1;
5515
5516 return passive;
5517}
5518
5519static int iwl_get_channels_for_scan(struct iwl_priv *priv, int phymode,
5520 u8 is_active, u8 direct_mask,
5521 struct iwl_scan_channel *scan_ch)
5522{
5523 const struct ieee80211_channel *channels = NULL;
5524 const struct ieee80211_hw_mode *hw_mode;
5525 const struct iwl_channel_info *ch_info;
5526 u16 passive_dwell = 0;
5527 u16 active_dwell = 0;
5528 int added, i;
5529
5530 hw_mode = iwl_get_hw_mode(priv, phymode);
5531 if (!hw_mode)
5532 return 0;
5533
5534 channels = hw_mode->channels;
5535
5536 active_dwell = iwl_get_active_dwell_time(priv, phymode);
5537 passive_dwell = iwl_get_passive_dwell_time(priv, phymode);
5538
5539 for (i = 0, added = 0; i < hw_mode->num_channels; i++) {
5540 if (channels[i].chan ==
5541 le16_to_cpu(priv->active_rxon.channel)) {
5542 if (iwl_is_associated(priv)) {
5543 IWL_DEBUG_SCAN
5544 ("Skipping current channel %d\n",
5545 le16_to_cpu(priv->active_rxon.channel));
5546 continue;
5547 }
5548 } else if (priv->only_active_channel)
5549 continue;
5550
5551 scan_ch->channel = channels[i].chan;
5552
5553 ch_info = iwl_get_channel_info(priv, phymode, scan_ch->channel);
5554 if (!is_channel_valid(ch_info)) {
5555 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
5556 scan_ch->channel);
5557 continue;
5558 }
5559
5560 if (!is_active || is_channel_passive(ch_info) ||
5561 !(channels[i].flag & IEEE80211_CHAN_W_ACTIVE_SCAN))
5562 scan_ch->type = 0; /* passive */
5563 else
5564 scan_ch->type = 1; /* active */
5565
5566 if (scan_ch->type & 1)
5567 scan_ch->type |= (direct_mask << 1);
5568
5569 if (is_channel_narrow(ch_info))
5570 scan_ch->type |= (1 << 7);
5571
5572 scan_ch->active_dwell = cpu_to_le16(active_dwell);
5573 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
5574
5575 /* Set power levels to defaults */
5576 scan_ch->tpc.dsp_atten = 110;
5577 /* scan_pwr_info->tpc.dsp_atten; */
5578
5579 /*scan_pwr_info->tpc.tx_gain; */
5580 if (phymode == MODE_IEEE80211A)
5581 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
5582 else {
5583 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
5584 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
5585 * power level
5586 scan_ch->tpc.tx_gain = ((1<<5) | (2 << 3)) | 3;
5587 */
5588 }
5589
5590 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
5591 scan_ch->channel,
5592 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
5593 (scan_ch->type & 1) ?
5594 active_dwell : passive_dwell);
5595
5596 scan_ch++;
5597 added++;
5598 }
5599
5600 IWL_DEBUG_SCAN("total channels to scan %d \n", added);
5601 return added;
5602}
5603
5604static void iwl_reset_channel_flag(struct iwl_priv *priv)
5605{
5606 int i, j;
5607 for (i = 0; i < 3; i++) {
5608 struct ieee80211_hw_mode *hw_mode = (void *)&priv->modes[i];
5609 for (j = 0; j < hw_mode->num_channels; j++)
5610 hw_mode->channels[j].flag = hw_mode->channels[j].val;
5611 }
5612}
5613
5614static void iwl_init_hw_rates(struct iwl_priv *priv,
5615 struct ieee80211_rate *rates)
5616{
5617 int i;
5618
5619 for (i = 0; i < IWL_RATE_COUNT; i++) {
5620 rates[i].rate = iwl_rates[i].ieee * 5;
5621 rates[i].val = i; /* Rate scaling will work on indexes */
5622 rates[i].val2 = i;
5623 rates[i].flags = IEEE80211_RATE_SUPPORTED;
5624 /* Only OFDM have the bits-per-symbol set */
5625 if ((i <= IWL_LAST_OFDM_RATE) && (i >= IWL_FIRST_OFDM_RATE))
5626 rates[i].flags |= IEEE80211_RATE_OFDM;
5627 else {
5628 /*
5629 * If CCK 1M then set rate flag to CCK else CCK_2
5630 * which is CCK | PREAMBLE2
5631 */
5632 rates[i].flags |= (iwl_rates[i].plcp == 10) ?
5633 IEEE80211_RATE_CCK : IEEE80211_RATE_CCK_2;
5634 }
5635
5636 /* Set up which ones are basic rates... */
5637 if (IWL_BASIC_RATES_MASK & (1 << i))
5638 rates[i].flags |= IEEE80211_RATE_BASIC;
5639 }
5640
5641 iwl4965_init_hw_rates(priv, rates);
5642}
5643
5644/**
5645 * iwl_init_geos - Initialize mac80211's geo/channel info based from eeprom
5646 */
5647static int iwl_init_geos(struct iwl_priv *priv)
5648{
5649 struct iwl_channel_info *ch;
5650 struct ieee80211_hw_mode *modes;
5651 struct ieee80211_channel *channels;
5652 struct ieee80211_channel *geo_ch;
5653 struct ieee80211_rate *rates;
5654 int i = 0;
5655 enum {
5656 A = 0,
5657 B = 1,
5658 G = 2,
5659 A_11N = 3,
5660 G_11N = 4,
5661 };
5662 int mode_count = 5;
5663
5664 if (priv->modes) {
5665 IWL_DEBUG_INFO("Geography modes already initialized.\n");
5666 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5667 return 0;
5668 }
5669
5670 modes = kzalloc(sizeof(struct ieee80211_hw_mode) * mode_count,
5671 GFP_KERNEL);
5672 if (!modes)
5673 return -ENOMEM;
5674
5675 channels = kzalloc(sizeof(struct ieee80211_channel) *
5676 priv->channel_count, GFP_KERNEL);
5677 if (!channels) {
5678 kfree(modes);
5679 return -ENOMEM;
5680 }
5681
5682 rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_MAX_RATES + 1)),
5683 GFP_KERNEL);
5684 if (!rates) {
5685 kfree(modes);
5686 kfree(channels);
5687 return -ENOMEM;
5688 }
5689
5690 /* 0 = 802.11a
5691 * 1 = 802.11b
5692 * 2 = 802.11g
5693 */
5694
5695 /* 5.2GHz channels start after the 2.4GHz channels */
5696 modes[A].mode = MODE_IEEE80211A;
5697 modes[A].channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
5698 modes[A].rates = rates;
5699 modes[A].num_rates = 8; /* just OFDM */
5700 modes[A].rates = &rates[4];
5701 modes[A].num_channels = 0;
5702
5703 modes[B].mode = MODE_IEEE80211B;
5704 modes[B].channels = channels;
5705 modes[B].rates = rates;
5706 modes[B].num_rates = 4; /* just CCK */
5707 modes[B].num_channels = 0;
5708
5709 modes[G].mode = MODE_IEEE80211G;
5710 modes[G].channels = channels;
5711 modes[G].rates = rates;
5712 modes[G].num_rates = 12; /* OFDM & CCK */
5713 modes[G].num_channels = 0;
5714
5715 modes[G_11N].mode = MODE_IEEE80211G;
5716 modes[G_11N].channels = channels;
5717 modes[G_11N].num_rates = 13; /* OFDM & CCK */
5718 modes[G_11N].rates = rates;
5719 modes[G_11N].num_channels = 0;
5720
5721 modes[A_11N].mode = MODE_IEEE80211A;
5722 modes[A_11N].channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
5723 modes[A_11N].rates = &rates[4];
5724 modes[A_11N].num_rates = 9; /* just OFDM */
5725 modes[A_11N].num_channels = 0;
5726
5727 priv->ieee_channels = channels;
5728 priv->ieee_rates = rates;
5729
5730 iwl_init_hw_rates(priv, rates);
5731
5732 for (i = 0, geo_ch = channels; i < priv->channel_count; i++) {
5733 ch = &priv->channel_info[i];
5734
5735 if (!is_channel_valid(ch)) {
5736 IWL_DEBUG_INFO("Channel %d [%sGHz] is restricted -- "
5737 "skipping.\n",
5738 ch->channel, is_channel_a_band(ch) ?
5739 "5.2" : "2.4");
5740 continue;
5741 }
5742
5743 if (is_channel_a_band(ch)) {
5744 geo_ch = &modes[A].channels[modes[A].num_channels++];
5745 modes[A_11N].num_channels++;
5746 } else {
5747 geo_ch = &modes[B].channels[modes[B].num_channels++];
5748 modes[G].num_channels++;
5749 modes[G_11N].num_channels++;
5750 }
5751
5752 geo_ch->freq = ieee80211chan2mhz(ch->channel);
5753 geo_ch->chan = ch->channel;
5754 geo_ch->power_level = ch->max_power_avg;
5755 geo_ch->antenna_max = 0xff;
5756
5757 if (is_channel_valid(ch)) {
5758 geo_ch->flag = IEEE80211_CHAN_W_SCAN;
5759 if (ch->flags & EEPROM_CHANNEL_IBSS)
5760 geo_ch->flag |= IEEE80211_CHAN_W_IBSS;
5761
5762 if (ch->flags & EEPROM_CHANNEL_ACTIVE)
5763 geo_ch->flag |= IEEE80211_CHAN_W_ACTIVE_SCAN;
5764
5765 if (ch->flags & EEPROM_CHANNEL_RADAR)
5766 geo_ch->flag |= IEEE80211_CHAN_W_RADAR_DETECT;
5767
5768 if (ch->max_power_avg > priv->max_channel_txpower_limit)
5769 priv->max_channel_txpower_limit =
5770 ch->max_power_avg;
5771 }
5772
5773 geo_ch->val = geo_ch->flag;
5774 }
5775
5776 if ((modes[A].num_channels == 0) && priv->is_abg) {
5777 printk(KERN_INFO DRV_NAME
5778 ": Incorrectly detected BG card as ABG. Please send "
5779 "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5780 priv->pci_dev->device, priv->pci_dev->subsystem_device);
5781 priv->is_abg = 0;
5782 }
5783
5784 printk(KERN_INFO DRV_NAME
5785 ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5786 modes[G].num_channels, modes[A].num_channels);
5787
5788 /*
5789 * NOTE: We register these in preference of order -- the
5790 * stack doesn't currently (as of 7.0.6 / Apr 24 '07) pick
5791 * a phymode based on rates or AP capabilities but seems to
5792 * configure it purely on if the channel being configured
5793 * is supported by a mode -- and the first match is taken
5794 */
5795
5796 if (modes[G].num_channels)
5797 ieee80211_register_hwmode(priv->hw, &modes[G]);
5798 if (modes[B].num_channels)
5799 ieee80211_register_hwmode(priv->hw, &modes[B]);
5800 if (modes[A].num_channels)
5801 ieee80211_register_hwmode(priv->hw, &modes[A]);
5802
5803 priv->modes = modes;
5804 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5805
5806 return 0;
5807}
5808
5809/******************************************************************************
5810 *
5811 * uCode download functions
5812 *
5813 ******************************************************************************/
5814
5815static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
5816{
5817 if (priv->ucode_code.v_addr != NULL) {
5818 pci_free_consistent(priv->pci_dev,
5819 priv->ucode_code.len,
5820 priv->ucode_code.v_addr,
5821 priv->ucode_code.p_addr);
5822 priv->ucode_code.v_addr = NULL;
5823 }
5824 if (priv->ucode_data.v_addr != NULL) {
5825 pci_free_consistent(priv->pci_dev,
5826 priv->ucode_data.len,
5827 priv->ucode_data.v_addr,
5828 priv->ucode_data.p_addr);
5829 priv->ucode_data.v_addr = NULL;
5830 }
5831 if (priv->ucode_data_backup.v_addr != NULL) {
5832 pci_free_consistent(priv->pci_dev,
5833 priv->ucode_data_backup.len,
5834 priv->ucode_data_backup.v_addr,
5835 priv->ucode_data_backup.p_addr);
5836 priv->ucode_data_backup.v_addr = NULL;
5837 }
5838 if (priv->ucode_init.v_addr != NULL) {
5839 pci_free_consistent(priv->pci_dev,
5840 priv->ucode_init.len,
5841 priv->ucode_init.v_addr,
5842 priv->ucode_init.p_addr);
5843 priv->ucode_init.v_addr = NULL;
5844 }
5845 if (priv->ucode_init_data.v_addr != NULL) {
5846 pci_free_consistent(priv->pci_dev,
5847 priv->ucode_init_data.len,
5848 priv->ucode_init_data.v_addr,
5849 priv->ucode_init_data.p_addr);
5850 priv->ucode_init_data.v_addr = NULL;
5851 }
5852 if (priv->ucode_boot.v_addr != NULL) {
5853 pci_free_consistent(priv->pci_dev,
5854 priv->ucode_boot.len,
5855 priv->ucode_boot.v_addr,
5856 priv->ucode_boot.p_addr);
5857 priv->ucode_boot.v_addr = NULL;
5858 }
5859}
5860
5861/**
5862 * iwl_verify_inst_full - verify runtime uCode image in card vs. host,
5863 * looking at all data.
5864 */
5865static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 * image, u32 len)
5866{
5867 u32 val;
5868 u32 save_len = len;
5869 int rc = 0;
5870 u32 errcnt;
5871
5872 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5873
5874 rc = iwl_grab_restricted_access(priv);
5875 if (rc)
5876 return rc;
5877
5878 iwl_write_restricted(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
5879
5880 errcnt = 0;
5881 for (; len > 0; len -= sizeof(u32), image++) {
5882 /* read data comes through single port, auto-incr addr */
5883 /* NOTE: Use the debugless read so we don't flood kernel log
5884 * if IWL_DL_IO is set */
5885 val = _iwl_read_restricted(priv, HBUS_TARG_MEM_RDAT);
5886 if (val != le32_to_cpu(*image)) {
5887 IWL_ERROR("uCode INST section is invalid at "
5888 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5889 save_len - len, val, le32_to_cpu(*image));
5890 rc = -EIO;
5891 errcnt++;
5892 if (errcnt >= 20)
5893 break;
5894 }
5895 }
5896
5897 iwl_release_restricted_access(priv);
5898
5899 if (!errcnt)
5900 IWL_DEBUG_INFO
5901 ("ucode image in INSTRUCTION memory is good\n");
5902
5903 return rc;
5904}
5905
5906
5907/**
5908 * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
5909 * using sample data 100 bytes apart. If these sample points are good,
5910 * it's a pretty good bet that everything between them is good, too.
5911 */
5912static int iwl_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
5913{
5914 u32 val;
5915 int rc = 0;
5916 u32 errcnt = 0;
5917 u32 i;
5918
5919 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5920
5921 rc = iwl_grab_restricted_access(priv);
5922 if (rc)
5923 return rc;
5924
5925 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
5926 /* read data comes through single port, auto-incr addr */
5927 /* NOTE: Use the debugless read so we don't flood kernel log
5928 * if IWL_DL_IO is set */
5929 iwl_write_restricted(priv, HBUS_TARG_MEM_RADDR,
5930 i + RTC_INST_LOWER_BOUND);
5931 val = _iwl_read_restricted(priv, HBUS_TARG_MEM_RDAT);
5932 if (val != le32_to_cpu(*image)) {
5933#if 0 /* Enable this if you want to see details */
5934 IWL_ERROR("uCode INST section is invalid at "
5935 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5936 i, val, *image);
5937#endif
5938 rc = -EIO;
5939 errcnt++;
5940 if (errcnt >= 3)
5941 break;
5942 }
5943 }
5944
5945 iwl_release_restricted_access(priv);
5946
5947 return rc;
5948}
5949
5950
5951/**
5952 * iwl_verify_ucode - determine which instruction image is in SRAM,
5953 * and verify its contents
5954 */
5955static int iwl_verify_ucode(struct iwl_priv *priv)
5956{
5957 __le32 *image;
5958 u32 len;
5959 int rc = 0;
5960
5961 /* Try bootstrap */
5962 image = (__le32 *)priv->ucode_boot.v_addr;
5963 len = priv->ucode_boot.len;
5964 rc = iwl_verify_inst_sparse(priv, image, len);
5965 if (rc == 0) {
5966 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5967 return 0;
5968 }
5969
5970 /* Try initialize */
5971 image = (__le32 *)priv->ucode_init.v_addr;
5972 len = priv->ucode_init.len;
5973 rc = iwl_verify_inst_sparse(priv, image, len);
5974 if (rc == 0) {
5975 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5976 return 0;
5977 }
5978
5979 /* Try runtime/protocol */
5980 image = (__le32 *)priv->ucode_code.v_addr;
5981 len = priv->ucode_code.len;
5982 rc = iwl_verify_inst_sparse(priv, image, len);
5983 if (rc == 0) {
5984 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5985 return 0;
5986 }
5987
5988 IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5989
5990 /* Show first several data entries in instruction SRAM.
5991 * Selection of bootstrap image is arbitrary. */
5992 image = (__le32 *)priv->ucode_boot.v_addr;
5993 len = priv->ucode_boot.len;
5994 rc = iwl_verify_inst_full(priv, image, len);
5995
5996 return rc;
5997}
5998
5999
6000/* check contents of special bootstrap uCode SRAM */
6001static int iwl_verify_bsm(struct iwl_priv *priv)
6002{
6003 __le32 *image = priv->ucode_boot.v_addr;
6004 u32 len = priv->ucode_boot.len;
6005 u32 reg;
6006 u32 val;
6007
6008 IWL_DEBUG_INFO("Begin verify bsm\n");
6009
6010 /* verify BSM SRAM contents */
6011 val = iwl_read_restricted_reg(priv, BSM_WR_DWCOUNT_REG);
6012 for (reg = BSM_SRAM_LOWER_BOUND;
6013 reg < BSM_SRAM_LOWER_BOUND + len;
6014 reg += sizeof(u32), image ++) {
6015 val = iwl_read_restricted_reg(priv, reg);
6016 if (val != le32_to_cpu(*image)) {
6017 IWL_ERROR("BSM uCode verification failed at "
6018 "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
6019 BSM_SRAM_LOWER_BOUND,
6020 reg - BSM_SRAM_LOWER_BOUND, len,
6021 val, le32_to_cpu(*image));
6022 return -EIO;
6023 }
6024 }
6025
6026 IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
6027
6028 return 0;
6029}
6030
6031/**
6032 * iwl_load_bsm - Load bootstrap instructions
6033 *
6034 * BSM operation:
6035 *
6036 * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
6037 * in special SRAM that does not power down during RFKILL. When powering back
6038 * up after power-saving sleeps (or during initial uCode load), the BSM loads
6039 * the bootstrap program into the on-board processor, and starts it.
6040 *
6041 * The bootstrap program loads (via DMA) instructions and data for a new
6042 * program from host DRAM locations indicated by the host driver in the
6043 * BSM_DRAM_* registers. Once the new program is loaded, it starts
6044 * automatically.
6045 *
6046 * When initializing the NIC, the host driver points the BSM to the
6047 * "initialize" uCode image. This uCode sets up some internal data, then
6048 * notifies host via "initialize alive" that it is complete.
6049 *
6050 * The host then replaces the BSM_DRAM_* pointer values to point to the
6051 * normal runtime uCode instructions and a backup uCode data cache buffer
6052 * (filled initially with starting data values for the on-board processor),
6053 * then triggers the "initialize" uCode to load and launch the runtime uCode,
6054 * which begins normal operation.
6055 *
6056 * When doing a power-save shutdown, runtime uCode saves data SRAM into
6057 * the backup data cache in DRAM before SRAM is powered down.
6058 *
6059 * When powering back up, the BSM loads the bootstrap program. This reloads
6060 * the runtime uCode instructions and the backup data cache into SRAM,
6061 * and re-launches the runtime uCode from where it left off.
6062 */
6063static int iwl_load_bsm(struct iwl_priv *priv)
6064{
6065 __le32 *image = priv->ucode_boot.v_addr;
6066 u32 len = priv->ucode_boot.len;
6067 dma_addr_t pinst;
6068 dma_addr_t pdata;
6069 u32 inst_len;
6070 u32 data_len;
6071 int rc;
6072 int i;
6073 u32 done;
6074 u32 reg_offset;
6075
6076 IWL_DEBUG_INFO("Begin load bsm\n");
6077
6078 /* make sure bootstrap program is no larger than BSM's SRAM size */
6079 if (len > IWL_MAX_BSM_SIZE)
6080 return -EINVAL;
6081
6082 /* Tell bootstrap uCode where to find the "Initialize" uCode
6083 * in host DRAM ... bits 31:0 for 3945, bits 35:4 for 4965.
6084 * NOTE: iwl_initialize_alive_start() will replace these values,
6085 * after the "initialize" uCode has run, to point to
6086 * runtime/protocol instructions and backup data cache. */
6087 pinst = priv->ucode_init.p_addr >> 4;
6088 pdata = priv->ucode_init_data.p_addr >> 4;
6089 inst_len = priv->ucode_init.len;
6090 data_len = priv->ucode_init_data.len;
6091
6092 rc = iwl_grab_restricted_access(priv);
6093 if (rc)
6094 return rc;
6095
6096 iwl_write_restricted_reg(priv, BSM_DRAM_INST_PTR_REG, pinst);
6097 iwl_write_restricted_reg(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6098 iwl_write_restricted_reg(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
6099 iwl_write_restricted_reg(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
6100
6101 /* Fill BSM memory with bootstrap instructions */
6102 for (reg_offset = BSM_SRAM_LOWER_BOUND;
6103 reg_offset < BSM_SRAM_LOWER_BOUND + len;
6104 reg_offset += sizeof(u32), image++)
6105 _iwl_write_restricted_reg(priv, reg_offset,
6106 le32_to_cpu(*image));
6107
6108 rc = iwl_verify_bsm(priv);
6109 if (rc) {
6110 iwl_release_restricted_access(priv);
6111 return rc;
6112 }
6113
6114 /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
6115 iwl_write_restricted_reg(priv, BSM_WR_MEM_SRC_REG, 0x0);
6116 iwl_write_restricted_reg(priv, BSM_WR_MEM_DST_REG,
6117 RTC_INST_LOWER_BOUND);
6118 iwl_write_restricted_reg(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
6119
6120 /* Load bootstrap code into instruction SRAM now,
6121 * to prepare to load "initialize" uCode */
6122 iwl_write_restricted_reg(priv, BSM_WR_CTRL_REG,
6123 BSM_WR_CTRL_REG_BIT_START);
6124
6125 /* Wait for load of bootstrap uCode to finish */
6126 for (i = 0; i < 100; i++) {
6127 done = iwl_read_restricted_reg(priv, BSM_WR_CTRL_REG);
6128 if (!(done & BSM_WR_CTRL_REG_BIT_START))
6129 break;
6130 udelay(10);
6131 }
6132 if (i < 100)
6133 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
6134 else {
6135 IWL_ERROR("BSM write did not complete!\n");
6136 return -EIO;
6137 }
6138
6139 /* Enable future boot loads whenever power management unit triggers it
6140 * (e.g. when powering back up after power-save shutdown) */
6141 iwl_write_restricted_reg(priv, BSM_WR_CTRL_REG,
6142 BSM_WR_CTRL_REG_BIT_START_EN);
6143
6144 iwl_release_restricted_access(priv);
6145
6146 return 0;
6147}
6148
6149static void iwl_nic_start(struct iwl_priv *priv)
6150{
6151 /* Remove all resets to allow NIC to operate */
6152 iwl_write32(priv, CSR_RESET, 0);
6153}
6154
6155/**
6156 * iwl_read_ucode - Read uCode images from disk file.
6157 *
6158 * Copy into buffers for card to fetch via bus-mastering
6159 */
6160static int iwl_read_ucode(struct iwl_priv *priv)
6161{
6162 struct iwl_ucode *ucode;
6163 int rc = 0;
6164 const struct firmware *ucode_raw;
6165 const char *name = "iwlwifi-4965" IWL4965_UCODE_API ".ucode";
6166 u8 *src;
6167 size_t len;
6168 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
6169
6170 /* Ask kernel firmware_class module to get the boot firmware off disk.
6171 * request_firmware() is synchronous, file is in memory on return. */
6172 rc = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
6173 if (rc < 0) {
6174 IWL_ERROR("%s firmware file req failed: Reason %d\n", name, rc);
6175 goto error;
6176 }
6177
6178 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
6179 name, ucode_raw->size);
6180
6181 /* Make sure that we got at least our header! */
6182 if (ucode_raw->size < sizeof(*ucode)) {
6183 IWL_ERROR("File size way too small!\n");
6184 rc = -EINVAL;
6185 goto err_release;
6186 }
6187
6188 /* Data from ucode file: header followed by uCode images */
6189 ucode = (void *)ucode_raw->data;
6190
6191 ver = le32_to_cpu(ucode->ver);
6192 inst_size = le32_to_cpu(ucode->inst_size);
6193 data_size = le32_to_cpu(ucode->data_size);
6194 init_size = le32_to_cpu(ucode->init_size);
6195 init_data_size = le32_to_cpu(ucode->init_data_size);
6196 boot_size = le32_to_cpu(ucode->boot_size);
6197
6198 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
6199 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
6200 inst_size);
6201 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
6202 data_size);
6203 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
6204 init_size);
6205 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
6206 init_data_size);
6207 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
6208 boot_size);
6209
6210 /* Verify size of file vs. image size info in file's header */
6211 if (ucode_raw->size < sizeof(*ucode) +
6212 inst_size + data_size + init_size +
6213 init_data_size + boot_size) {
6214
6215 IWL_DEBUG_INFO("uCode file size %d too small\n",
6216 (int)ucode_raw->size);
6217 rc = -EINVAL;
6218 goto err_release;
6219 }
6220
6221 /* Verify that uCode images will fit in card's SRAM */
6222 if (inst_size > IWL_MAX_INST_SIZE) {
6223 IWL_DEBUG_INFO("uCode instr len %d too large to fit in card\n",
6224 (int)inst_size);
6225 rc = -EINVAL;
6226 goto err_release;
6227 }
6228
6229 if (data_size > IWL_MAX_DATA_SIZE) {
6230 IWL_DEBUG_INFO("uCode data len %d too large to fit in card\n",
6231 (int)data_size);
6232 rc = -EINVAL;
6233 goto err_release;
6234 }
6235 if (init_size > IWL_MAX_INST_SIZE) {
6236 IWL_DEBUG_INFO
6237 ("uCode init instr len %d too large to fit in card\n",
6238 (int)init_size);
6239 rc = -EINVAL;
6240 goto err_release;
6241 }
6242 if (init_data_size > IWL_MAX_DATA_SIZE) {
6243 IWL_DEBUG_INFO
6244 ("uCode init data len %d too large to fit in card\n",
6245 (int)init_data_size);
6246 rc = -EINVAL;
6247 goto err_release;
6248 }
6249 if (boot_size > IWL_MAX_BSM_SIZE) {
6250 IWL_DEBUG_INFO
6251 ("uCode boot instr len %d too large to fit in bsm\n",
6252 (int)boot_size);
6253 rc = -EINVAL;
6254 goto err_release;
6255 }
6256
6257 /* Allocate ucode buffers for card's bus-master loading ... */
6258
6259 /* Runtime instructions and 2 copies of data:
6260 * 1) unmodified from disk
6261 * 2) backup cache for save/restore during power-downs */
6262 priv->ucode_code.len = inst_size;
6263 priv->ucode_code.v_addr =
6264 pci_alloc_consistent(priv->pci_dev,
6265 priv->ucode_code.len,
6266 &(priv->ucode_code.p_addr));
6267
6268 priv->ucode_data.len = data_size;
6269 priv->ucode_data.v_addr =
6270 pci_alloc_consistent(priv->pci_dev,
6271 priv->ucode_data.len,
6272 &(priv->ucode_data.p_addr));
6273
6274 priv->ucode_data_backup.len = data_size;
6275 priv->ucode_data_backup.v_addr =
6276 pci_alloc_consistent(priv->pci_dev,
6277 priv->ucode_data_backup.len,
6278 &(priv->ucode_data_backup.p_addr));
6279
6280
6281 /* Initialization instructions and data */
6282 priv->ucode_init.len = init_size;
6283 priv->ucode_init.v_addr =
6284 pci_alloc_consistent(priv->pci_dev,
6285 priv->ucode_init.len,
6286 &(priv->ucode_init.p_addr));
6287
6288 priv->ucode_init_data.len = init_data_size;
6289 priv->ucode_init_data.v_addr =
6290 pci_alloc_consistent(priv->pci_dev,
6291 priv->ucode_init_data.len,
6292 &(priv->ucode_init_data.p_addr));
6293
6294 /* Bootstrap (instructions only, no data) */
6295 priv->ucode_boot.len = boot_size;
6296 priv->ucode_boot.v_addr =
6297 pci_alloc_consistent(priv->pci_dev,
6298 priv->ucode_boot.len,
6299 &(priv->ucode_boot.p_addr));
6300
6301 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
6302 !priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr ||
6303 !priv->ucode_boot.v_addr || !priv->ucode_data_backup.v_addr)
6304 goto err_pci_alloc;
6305
6306 /* Copy images into buffers for card's bus-master reads ... */
6307
6308 /* Runtime instructions (first block of data in file) */
6309 src = &ucode->data[0];
6310 len = priv->ucode_code.len;
6311 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %d\n",
6312 (int)len);
6313 memcpy(priv->ucode_code.v_addr, src, len);
6314 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
6315 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
6316
6317 /* Runtime data (2nd block)
6318 * NOTE: Copy into backup buffer will be done in iwl_up() */
6319 src = &ucode->data[inst_size];
6320 len = priv->ucode_data.len;
6321 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %d\n",
6322 (int)len);
6323 memcpy(priv->ucode_data.v_addr, src, len);
6324 memcpy(priv->ucode_data_backup.v_addr, src, len);
6325
6326 /* Initialization instructions (3rd block) */
6327 if (init_size) {
6328 src = &ucode->data[inst_size + data_size];
6329 len = priv->ucode_init.len;
6330 IWL_DEBUG_INFO("Copying (but not loading) init instr len %d\n",
6331 (int)len);
6332 memcpy(priv->ucode_init.v_addr, src, len);
6333 }
6334
6335 /* Initialization data (4th block) */
6336 if (init_data_size) {
6337 src = &ucode->data[inst_size + data_size + init_size];
6338 len = priv->ucode_init_data.len;
6339 IWL_DEBUG_INFO("Copying (but not loading) init data len %d\n",
6340 (int)len);
6341 memcpy(priv->ucode_init_data.v_addr, src, len);
6342 }
6343
6344 /* Bootstrap instructions (5th block) */
6345 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
6346 len = priv->ucode_boot.len;
6347 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %d\n",
6348 (int)len);
6349 memcpy(priv->ucode_boot.v_addr, src, len);
6350
6351 /* We have our copies now, allow OS release its copies */
6352 release_firmware(ucode_raw);
6353 return 0;
6354
6355 err_pci_alloc:
6356 IWL_ERROR("failed to allocate pci memory\n");
6357 rc = -ENOMEM;
6358 iwl_dealloc_ucode_pci(priv);
6359
6360 err_release:
6361 release_firmware(ucode_raw);
6362
6363 error:
6364 return rc;
6365}
6366
6367
6368/**
6369 * iwl_set_ucode_ptrs - Set uCode address location
6370 *
6371 * Tell initialization uCode where to find runtime uCode.
6372 *
6373 * BSM registers initially contain pointers to initialization uCode.
6374 * We need to replace them to load runtime uCode inst and data,
6375 * and to save runtime data when powering down.
6376 */
6377static int iwl_set_ucode_ptrs(struct iwl_priv *priv)
6378{
6379 dma_addr_t pinst;
6380 dma_addr_t pdata;
6381 int rc = 0;
6382 unsigned long flags;
6383
6384 /* bits 35:4 for 4965 */
6385 pinst = priv->ucode_code.p_addr >> 4;
6386 pdata = priv->ucode_data_backup.p_addr >> 4;
6387
6388 spin_lock_irqsave(&priv->lock, flags);
6389 rc = iwl_grab_restricted_access(priv);
6390 if (rc) {
6391 spin_unlock_irqrestore(&priv->lock, flags);
6392 return rc;
6393 }
6394
6395 /* Tell bootstrap uCode where to find image to load */
6396 iwl_write_restricted_reg(priv, BSM_DRAM_INST_PTR_REG, pinst);
6397 iwl_write_restricted_reg(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6398 iwl_write_restricted_reg(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
6399 priv->ucode_data.len);
6400
6401 /* Inst bytecount must be last to set up, bit 31 signals uCode
6402 * that all new ptr/size info is in place */
6403 iwl_write_restricted_reg(priv, BSM_DRAM_INST_BYTECOUNT_REG,
6404 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
6405
6406 iwl_release_restricted_access(priv);
6407
6408 spin_unlock_irqrestore(&priv->lock, flags);
6409
6410 IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
6411
6412 return rc;
6413}
6414
6415/**
6416 * iwl_init_alive_start - Called after REPLY_ALIVE notification receieved
6417 *
6418 * Called after REPLY_ALIVE notification received from "initialize" uCode.
6419 *
6420 * The 4965 "initialize" ALIVE reply contains calibration data for:
6421 * Voltage, temperature, and MIMO tx gain correction, now stored in priv
6422 * (3945 does not contain this data).
6423 *
6424 * Tell "initialize" uCode to go ahead and load the runtime uCode.
6425*/
6426static void iwl_init_alive_start(struct iwl_priv *priv)
6427{
6428 /* Check alive response for "valid" sign from uCode */
6429 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
6430 /* We had an error bringing up the hardware, so take it
6431 * all the way back down so we can try again */
6432 IWL_DEBUG_INFO("Initialize Alive failed.\n");
6433 goto restart;
6434 }
6435
6436 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
6437 * This is a paranoid check, because we would not have gotten the
6438 * "initialize" alive if code weren't properly loaded. */
6439 if (iwl_verify_ucode(priv)) {
6440 /* Runtime instruction load was bad;
6441 * take it all the way back down so we can try again */
6442 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
6443 goto restart;
6444 }
6445
6446 /* Calculate temperature */
6447 priv->temperature = iwl4965_get_temperature(priv);
6448
6449 /* Send pointers to protocol/runtime uCode image ... init code will
6450 * load and launch runtime uCode, which will send us another "Alive"
6451 * notification. */
6452 IWL_DEBUG_INFO("Initialization Alive received.\n");
6453 if (iwl_set_ucode_ptrs(priv)) {
6454 /* Runtime instruction load won't happen;
6455 * take it all the way back down so we can try again */
6456 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
6457 goto restart;
6458 }
6459 return;
6460
6461 restart:
6462 queue_work(priv->workqueue, &priv->restart);
6463}
6464
6465
6466/**
6467 * iwl_alive_start - called after REPLY_ALIVE notification received
6468 * from protocol/runtime uCode (initialization uCode's
6469 * Alive gets handled by iwl_init_alive_start()).
6470 */
6471static void iwl_alive_start(struct iwl_priv *priv)
6472{
6473 int rc = 0;
6474
6475 IWL_DEBUG_INFO("Runtime Alive received.\n");
6476
6477 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
6478 /* We had an error bringing up the hardware, so take it
6479 * all the way back down so we can try again */
6480 IWL_DEBUG_INFO("Alive failed.\n");
6481 goto restart;
6482 }
6483
6484 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
6485 * This is a paranoid check, because we would not have gotten the
6486 * "runtime" alive if code weren't properly loaded. */
6487 if (iwl_verify_ucode(priv)) {
6488 /* Runtime instruction load was bad;
6489 * take it all the way back down so we can try again */
6490 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
6491 goto restart;
6492 }
6493
6494 iwl_clear_stations_table(priv);
6495
6496 rc = iwl4965_alive_notify(priv);
6497 if (rc) {
6498 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
6499 rc);
6500 goto restart;
6501 }
6502
6503 /* After the ALIVE response, we can process host commands */
6504 set_bit(STATUS_ALIVE, &priv->status);
6505
6506 /* Clear out the uCode error bit if it is set */
6507 clear_bit(STATUS_FW_ERROR, &priv->status);
6508
6509 rc = iwl_init_channel_map(priv);
6510 if (rc) {
6511 IWL_ERROR("initializing regulatory failed: %d\n", rc);
6512 return;
6513 }
6514
6515 iwl_init_geos(priv);
6516
6517 if (iwl_is_rfkill(priv))
6518 return;
6519
6520 if (!priv->mac80211_registered) {
6521 /* Unlock so any user space entry points can call back into
6522 * the driver without a deadlock... */
6523 mutex_unlock(&priv->mutex);
6524 iwl_rate_control_register(priv->hw);
6525 rc = ieee80211_register_hw(priv->hw);
6526 priv->hw->conf.beacon_int = 100;
6527 mutex_lock(&priv->mutex);
6528
6529 if (rc) {
6530 IWL_ERROR("Failed to register network "
6531 "device (error %d)\n", rc);
6532 return;
6533 }
6534
6535 priv->mac80211_registered = 1;
6536
6537 iwl_reset_channel_flag(priv);
6538 } else
6539 ieee80211_start_queues(priv->hw);
6540
6541 priv->active_rate = priv->rates_mask;
6542 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
6543
6544 iwl_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
6545
6546 if (iwl_is_associated(priv)) {
6547 struct iwl_rxon_cmd *active_rxon =
6548 (struct iwl_rxon_cmd *)(&priv->active_rxon);
6549
6550 memcpy(&priv->staging_rxon, &priv->active_rxon,
6551 sizeof(priv->staging_rxon));
6552 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6553 } else {
6554 /* Initialize our rx_config data */
6555 iwl_connection_init_rx_config(priv);
6556 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
6557 }
6558
6559 /* Configure BT coexistence */
6560 iwl_send_bt_config(priv);
6561
6562 /* Configure the adapter for unassociated operation */
6563 iwl_commit_rxon(priv);
6564
6565 /* At this point, the NIC is initialized and operational */
6566 priv->notif_missed_beacons = 0;
6567 set_bit(STATUS_READY, &priv->status);
6568
6569 iwl4965_rf_kill_ct_config(priv);
6570 IWL_DEBUG_INFO("ALIVE processing complete.\n");
6571
6572 if (priv->error_recovering)
6573 iwl_error_recovery(priv);
6574
6575 return;
6576
6577 restart:
6578 queue_work(priv->workqueue, &priv->restart);
6579}
6580
6581static void iwl_cancel_deferred_work(struct iwl_priv *priv);
6582
6583static void __iwl_down(struct iwl_priv *priv)
6584{
6585 unsigned long flags;
6586 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
6587 struct ieee80211_conf *conf = NULL;
6588
6589 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
6590
6591 conf = ieee80211_get_hw_conf(priv->hw);
6592
6593 if (!exit_pending)
6594 set_bit(STATUS_EXIT_PENDING, &priv->status);
6595
6596 iwl_clear_stations_table(priv);
6597
6598 /* Unblock any waiting calls */
6599 wake_up_interruptible_all(&priv->wait_command_queue);
6600
6601 iwl_cancel_deferred_work(priv);
6602
6603 /* Wipe out the EXIT_PENDING status bit if we are not actually
6604 * exiting the module */
6605 if (!exit_pending)
6606 clear_bit(STATUS_EXIT_PENDING, &priv->status);
6607
6608 /* stop and reset the on-board processor */
6609 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
6610
6611 /* tell the device to stop sending interrupts */
6612 iwl_disable_interrupts(priv);
6613
6614 if (priv->mac80211_registered)
6615 ieee80211_stop_queues(priv->hw);
6616
6617 /* If we have not previously called iwl_init() then
6618 * clear all bits but the RF Kill and SUSPEND bits and return */
6619 if (!iwl_is_init(priv)) {
6620 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6621 STATUS_RF_KILL_HW |
6622 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6623 STATUS_RF_KILL_SW |
6624 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6625 STATUS_IN_SUSPEND;
6626 goto exit;
6627 }
6628
6629 /* ...otherwise clear out all the status bits but the RF Kill and
6630 * SUSPEND bits and continue taking the NIC down. */
6631 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6632 STATUS_RF_KILL_HW |
6633 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6634 STATUS_RF_KILL_SW |
6635 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6636 STATUS_IN_SUSPEND |
6637 test_bit(STATUS_FW_ERROR, &priv->status) <<
6638 STATUS_FW_ERROR;
6639
6640 spin_lock_irqsave(&priv->lock, flags);
6641 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
6642 spin_unlock_irqrestore(&priv->lock, flags);
6643
6644 iwl_hw_txq_ctx_stop(priv);
6645 iwl_hw_rxq_stop(priv);
6646
6647 spin_lock_irqsave(&priv->lock, flags);
6648 if (!iwl_grab_restricted_access(priv)) {
6649 iwl_write_restricted_reg(priv, APMG_CLK_DIS_REG,
6650 APMG_CLK_VAL_DMA_CLK_RQT);
6651 iwl_release_restricted_access(priv);
6652 }
6653 spin_unlock_irqrestore(&priv->lock, flags);
6654
6655 udelay(5);
6656
6657 iwl_hw_nic_stop_master(priv);
6658 iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
6659 iwl_hw_nic_reset(priv);
6660
6661 exit:
6662 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
6663
6664 if (priv->ibss_beacon)
6665 dev_kfree_skb(priv->ibss_beacon);
6666 priv->ibss_beacon = NULL;
6667
6668 /* clear out any free frames */
6669 iwl_clear_free_frames(priv);
6670}
6671
6672static void iwl_down(struct iwl_priv *priv)
6673{
6674 mutex_lock(&priv->mutex);
6675 __iwl_down(priv);
6676 mutex_unlock(&priv->mutex);
6677}
6678
6679#define MAX_HW_RESTARTS 5
6680
6681static int __iwl_up(struct iwl_priv *priv)
6682{
0795af57 6683 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 6684 int rc, i;
6685 u32 hw_rf_kill = 0;
6686
6687 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6688 IWL_WARNING("Exit pending; will not bring the NIC up\n");
6689 return -EIO;
6690 }
6691
6692 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
6693 IWL_WARNING("Radio disabled by SW RF kill (module "
6694 "parameter)\n");
6695 return 0;
6696 }
6697
6698 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
6699
6700 rc = iwl_hw_nic_init(priv);
6701 if (rc) {
6702 IWL_ERROR("Unable to int nic\n");
6703 return rc;
6704 }
6705
6706 /* make sure rfkill handshake bits are cleared */
6707 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6708 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
6709 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
6710
6711 /* clear (again), then enable host interrupts */
6712 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
6713 iwl_enable_interrupts(priv);
6714
6715 /* really make sure rfkill handshake bits are cleared */
6716 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6717 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6718
6719 /* Copy original ucode data image from disk into backup cache.
6720 * This will be used to initialize the on-board processor's
6721 * data SRAM for a clean start when the runtime program first loads. */
6722 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
6723 priv->ucode_data.len);
6724
6725 /* If platform's RF_KILL switch is set to KILL,
6726 * wait for BIT_INT_RF_KILL interrupt before loading uCode
6727 * and getting things started */
6728 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
6729 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
6730 hw_rf_kill = 1;
6731
6732 if (test_bit(STATUS_RF_KILL_HW, &priv->status) || hw_rf_kill) {
6733 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
6734 return 0;
6735 }
6736
6737 for (i = 0; i < MAX_HW_RESTARTS; i++) {
6738
6739 iwl_clear_stations_table(priv);
6740
6741 /* load bootstrap state machine,
6742 * load bootstrap program into processor's memory,
6743 * prepare to load the "initialize" uCode */
6744 rc = iwl_load_bsm(priv);
6745
6746 if (rc) {
6747 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
6748 continue;
6749 }
6750
6751 /* start card; "initialize" will load runtime ucode */
6752 iwl_nic_start(priv);
6753
6754 /* MAC Address location in EEPROM same for 3945/4965 */
6755 get_eeprom_mac(priv, priv->mac_addr);
0795af57
JP		 6756 IWL_DEBUG_INFO("MAC address: %s\n",
6757 print_mac(mac, priv->mac_addr));
b481de9c
ZY		 6758
6759 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
6760
6761 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
6762
6763 return 0;
6764 }
6765
6766 set_bit(STATUS_EXIT_PENDING, &priv->status);
6767 __iwl_down(priv);
6768
6769 /* tried to restart and config the device for as long as our
6770 * patience could withstand */
6771 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
6772 return -EIO;
6773}
6774
6775
6776/*****************************************************************************
6777 *
6778 * Workqueue callbacks
6779 *
6780 *****************************************************************************/
6781
6782static void iwl_bg_init_alive_start(struct work_struct *data)
6783{
6784 struct iwl_priv *priv =
6785 container_of(data, struct iwl_priv, init_alive_start.work);
6786
6787 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6788 return;
6789
6790 mutex_lock(&priv->mutex);
6791 iwl_init_alive_start(priv);
6792 mutex_unlock(&priv->mutex);
6793}
6794
6795static void iwl_bg_alive_start(struct work_struct *data)
6796{
6797 struct iwl_priv *priv =
6798 container_of(data, struct iwl_priv, alive_start.work);
6799
6800 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6801 return;
6802
6803 mutex_lock(&priv->mutex);
6804 iwl_alive_start(priv);
6805 mutex_unlock(&priv->mutex);
6806}
6807
6808static void iwl_bg_rf_kill(struct work_struct *work)
6809{
6810 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
6811
6812 wake_up_interruptible(&priv->wait_command_queue);
6813
6814 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6815 return;
6816
6817 mutex_lock(&priv->mutex);
6818
6819 if (!iwl_is_rfkill(priv)) {
6820 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
6821 "HW and/or SW RF Kill no longer active, restarting "
6822 "device\n");
6823 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6824 queue_work(priv->workqueue, &priv->restart);
6825 } else {
6826
6827 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
6828 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
6829 "disabled by SW switch\n");
6830 else
6831 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
6832 "Kill switch must be turned off for "
6833 "wireless networking to work.\n");
6834 }
6835 mutex_unlock(&priv->mutex);
6836}
6837
6838#define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
6839
6840static void iwl_bg_scan_check(struct work_struct *data)
6841{
6842 struct iwl_priv *priv =
6843 container_of(data, struct iwl_priv, scan_check.work);
6844
6845 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6846 return;
6847
6848 mutex_lock(&priv->mutex);
6849 if (test_bit(STATUS_SCANNING, &priv->status) ||
6850 test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6851 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
6852 "Scan completion watchdog resetting adapter (%dms)\n",
6853 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
6854 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6855 queue_work(priv->workqueue, &priv->restart);
6856 }
6857 mutex_unlock(&priv->mutex);
6858}
6859
6860static void iwl_bg_request_scan(struct work_struct *data)
6861{
6862 struct iwl_priv *priv =
6863 container_of(data, struct iwl_priv, request_scan);
6864 struct iwl_host_cmd cmd = {
6865 .id = REPLY_SCAN_CMD,
6866 .len = sizeof(struct iwl_scan_cmd),
6867 .meta.flags = CMD_SIZE_HUGE,
6868 };
6869 int rc = 0;
6870 struct iwl_scan_cmd *scan;
6871 struct ieee80211_conf *conf = NULL;
6872 u8 direct_mask;
6873 int phymode;
6874
6875 conf = ieee80211_get_hw_conf(priv->hw);
6876
6877 mutex_lock(&priv->mutex);
6878
6879 if (!iwl_is_ready(priv)) {
6880 IWL_WARNING("request scan called when driver not ready.\n");
6881 goto done;
6882 }
6883
6884 /* Make sure the scan wasn't cancelled before this queued work
6885 * was given the chance to run... */
6886 if (!test_bit(STATUS_SCANNING, &priv->status))
6887 goto done;
6888
6889 /* This should never be called or scheduled if there is currently
6890 * a scan active in the hardware. */
6891 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
6892 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6893 "Ignoring second request.\n");
6894 rc = -EIO;
6895 goto done;
6896 }
6897
6898 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6899 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6900 goto done;
6901 }
6902
6903 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6904 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
6905 goto done;
6906 }
6907
6908 if (iwl_is_rfkill(priv)) {
6909 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6910 goto done;
6911 }
6912
6913 if (!test_bit(STATUS_READY, &priv->status)) {
6914 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
6915 goto done;
6916 }
6917
6918 if (!priv->scan_bands) {
6919 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6920 goto done;
6921 }
6922
6923 if (!priv->scan) {
6924 priv->scan = kmalloc(sizeof(struct iwl_scan_cmd) +
6925 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
6926 if (!priv->scan) {
6927 rc = -ENOMEM;
6928 goto done;
6929 }
6930 }
6931 scan = priv->scan;
6932 memset(scan, 0, sizeof(struct iwl_scan_cmd) + IWL_MAX_SCAN_SIZE);
6933
6934 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
6935 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
6936
6937 if (iwl_is_associated(priv)) {
6938 u16 interval = 0;
6939 u32 extra;
6940 u32 suspend_time = 100;
6941 u32 scan_suspend_time = 100;
6942 unsigned long flags;
6943
6944 IWL_DEBUG_INFO("Scanning while associated...\n");
6945
6946 spin_lock_irqsave(&priv->lock, flags);
6947 interval = priv->beacon_int;
6948 spin_unlock_irqrestore(&priv->lock, flags);
6949
6950 scan->suspend_time = 0;
6951 scan->max_out_time = cpu_to_le32(600 * 1024);
6952 if (!interval)
6953 interval = suspend_time;
6954
6955 extra = (suspend_time / interval) << 22;
6956 scan_suspend_time = (extra |
6957 ((suspend_time % interval) * 1024));
6958 scan->suspend_time = cpu_to_le32(scan_suspend_time);
6959 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
6960 scan_suspend_time, interval);
6961 }
6962
6963 /* We should add the ability for user to lock to PASSIVE ONLY */
6964 if (priv->one_direct_scan) {
6965 IWL_DEBUG_SCAN
6966 ("Kicking off one direct scan for '%s'\n",
6967 iwl_escape_essid(priv->direct_ssid,
6968 priv->direct_ssid_len));
6969 scan->direct_scan[0].id = WLAN_EID_SSID;
6970 scan->direct_scan[0].len = priv->direct_ssid_len;
6971 memcpy(scan->direct_scan[0].ssid,
6972 priv->direct_ssid, priv->direct_ssid_len);
6973 direct_mask = 1;
6974 } else if (!iwl_is_associated(priv)) {
6975 scan->direct_scan[0].id = WLAN_EID_SSID;
6976 scan->direct_scan[0].len = priv->essid_len;
6977 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
6978 direct_mask = 1;
6979 } else
6980 direct_mask = 0;
6981
6982 /* We don't build a direct scan probe request; the uCode will do
6983 * that based on the direct_mask added to each channel entry */
6984 scan->tx_cmd.len = cpu_to_le16(
6985 iwl_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
6986 IWL_MAX_SCAN_SIZE - sizeof(scan), 0));
6987 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
6988 scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
6989 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
6990
6991 /* flags + rate selection */
6992
6993 scan->tx_cmd.tx_flags |= cpu_to_le32(0x200);
6994
6995 switch (priv->scan_bands) {
6996 case 2:
6997 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
6998 scan->tx_cmd.rate_n_flags =
6999 iwl_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
7000 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
7001
7002 scan->good_CRC_th = 0;
7003 phymode = MODE_IEEE80211G;
7004 break;
7005
7006 case 1:
7007 scan->tx_cmd.rate_n_flags =
7008 iwl_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
7009 RATE_MCS_ANT_B_MSK);
7010 scan->good_CRC_th = IWL_GOOD_CRC_TH;
7011 phymode = MODE_IEEE80211A;
7012 break;
7013
7014 default:
7015 IWL_WARNING("Invalid scan band count\n");
7016 goto done;
7017 }
7018
7019 /* select Rx chains */
7020
7021 /* Force use of chains B and C (0x6) for scan Rx.
7022 * Avoid A (0x1) because of its off-channel reception on A-band.
7023 * MIMO is not used here, but value is required to make uCode happy. */
7024 scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
7025 cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
7026 (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
7027 (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
7028
7029 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
7030 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
7031
7032 if (direct_mask)
7033 IWL_DEBUG_SCAN
7034 ("Initiating direct scan for %s.\n",
7035 iwl_escape_essid(priv->essid, priv->essid_len));
7036 else
7037 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
7038
7039 scan->channel_count =
7040 iwl_get_channels_for_scan(
7041 priv, phymode, 1, /* active */
7042 direct_mask,
7043 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
7044
7045 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
7046 scan->channel_count * sizeof(struct iwl_scan_channel);
7047 cmd.data = scan;
7048 scan->len = cpu_to_le16(cmd.len);
7049
7050 set_bit(STATUS_SCAN_HW, &priv->status);
7051 rc = iwl_send_cmd_sync(priv, &cmd);
7052 if (rc)
7053 goto done;
7054
7055 queue_delayed_work(priv->workqueue, &priv->scan_check,
7056 IWL_SCAN_CHECK_WATCHDOG);
7057
7058 mutex_unlock(&priv->mutex);
7059 return;
7060
7061 done:
7062 /* inform mac80211 sacn aborted */
7063 queue_work(priv->workqueue, &priv->scan_completed);
7064 mutex_unlock(&priv->mutex);
7065}
7066
7067static void iwl_bg_up(struct work_struct *data)
7068{
7069 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
7070
7071 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7072 return;
7073
7074 mutex_lock(&priv->mutex);
7075 __iwl_up(priv);
7076 mutex_unlock(&priv->mutex);
7077}
7078
7079static void iwl_bg_restart(struct work_struct *data)
7080{
7081 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
7082
7083 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7084 return;
7085
7086 iwl_down(priv);
7087 queue_work(priv->workqueue, &priv->up);
7088}
7089
7090static void iwl_bg_rx_replenish(struct work_struct *data)
7091{
7092 struct iwl_priv *priv =
7093 container_of(data, struct iwl_priv, rx_replenish);
7094
7095 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7096 return;
7097
7098 mutex_lock(&priv->mutex);
7099 iwl_rx_replenish(priv);
7100 mutex_unlock(&priv->mutex);
7101}
7102
7103static void iwl_bg_post_associate(struct work_struct *data)
7104{
7105 struct iwl_priv *priv = container_of(data, struct iwl_priv,
7106 post_associate.work);
7107
7108 int rc = 0;
7109 struct ieee80211_conf *conf = NULL;
0795af57 7110 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 7111
7112 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7113 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
7114 return;
7115 }
7116
0795af57
JP		 7117 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
7118 priv->assoc_id,
7119 print_mac(mac, priv->active_rxon.bssid_addr));
b481de9c
ZY		 7120
7121
7122 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7123 return;
7124
7125 mutex_lock(&priv->mutex);
7126
7127 conf = ieee80211_get_hw_conf(priv->hw);
7128
7129 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7130 iwl_commit_rxon(priv);
7131
7132 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
7133 iwl_setup_rxon_timing(priv);
7134 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7135 sizeof(priv->rxon_timing), &priv->rxon_timing);
7136 if (rc)
7137 IWL_WARNING("REPLY_RXON_TIMING failed - "
7138 "Attempting to continue.\n");
7139
7140 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7141
7142#ifdef CONFIG_IWLWIFI_HT
7143 if (priv->is_ht_enabled && priv->current_assoc_ht.is_ht)
7144 iwl4965_set_rxon_ht(priv, &priv->current_assoc_ht);
7145 else {
7146 priv->active_rate_ht[0] = 0;
7147 priv->active_rate_ht[1] = 0;
7148 priv->current_channel_width = IWL_CHANNEL_WIDTH_20MHZ;
7149 }
7150#endif /* CONFIG_IWLWIFI_HT*/
7151 iwl4965_set_rxon_chain(priv);
7152 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7153
7154 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
7155 priv->assoc_id, priv->beacon_int);
7156
7157 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7158 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
7159 else
7160 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
7161
7162 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7163 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
7164 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
7165 else
7166 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
7167
7168 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7169 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
7170
7171 }
7172
7173 iwl_commit_rxon(priv);
7174
7175 switch (priv->iw_mode) {
7176 case IEEE80211_IF_TYPE_STA:
7177 iwl_rate_scale_init(priv->hw, IWL_AP_ID);
7178 break;
7179
7180 case IEEE80211_IF_TYPE_IBSS:
7181
7182 /* clear out the station table */
7183 iwl_clear_stations_table(priv);
7184
7185 iwl_rxon_add_station(priv, BROADCAST_ADDR, 0);
7186 iwl_rxon_add_station(priv, priv->bssid, 0);
7187 iwl_rate_scale_init(priv->hw, IWL_STA_ID);
7188 iwl_send_beacon_cmd(priv);
7189
7190 break;
7191
7192 default:
7193 IWL_ERROR("%s Should not be called in %d mode\n",
7194 __FUNCTION__, priv->iw_mode);
7195 break;
7196 }
7197
7198 iwl_sequence_reset(priv);
7199
7200#ifdef CONFIG_IWLWIFI_SENSITIVITY
7201 /* Enable Rx differential gain and sensitivity calibrations */
7202 iwl4965_chain_noise_reset(priv);
7203 priv->start_calib = 1;
7204#endif /* CONFIG_IWLWIFI_SENSITIVITY */
7205
7206 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7207 priv->assoc_station_added = 1;
7208
7209#ifdef CONFIG_IWLWIFI_QOS
7210 iwl_activate_qos(priv, 0);
7211#endif /* CONFIG_IWLWIFI_QOS */
7212 mutex_unlock(&priv->mutex);
7213}
7214
7215static void iwl_bg_abort_scan(struct work_struct *work)
7216{
7217 struct iwl_priv *priv = container_of(work, struct iwl_priv,
7218 abort_scan);
7219
7220 if (!iwl_is_ready(priv))
7221 return;
7222
7223 mutex_lock(&priv->mutex);
7224
7225 set_bit(STATUS_SCAN_ABORTING, &priv->status);
7226 iwl_send_scan_abort(priv);
7227
7228 mutex_unlock(&priv->mutex);
7229}
7230
7231static void iwl_bg_scan_completed(struct work_struct *work)
7232{
7233 struct iwl_priv *priv =
7234 container_of(work, struct iwl_priv, scan_completed);
7235
7236 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
7237
7238 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7239 return;
7240
7241 ieee80211_scan_completed(priv->hw);
7242
7243 /* Since setting the TXPOWER may have been deferred while
7244 * performing the scan, fire one off */
7245 mutex_lock(&priv->mutex);
7246 iwl_hw_reg_send_txpower(priv);
7247 mutex_unlock(&priv->mutex);
7248}
7249
7250/*****************************************************************************
7251 *
7252 * mac80211 entry point functions
7253 *
7254 *****************************************************************************/
7255
4150c572 7256static int iwl_mac_start(struct ieee80211_hw *hw)
b481de9c
ZY		 7257{
7258 struct iwl_priv *priv = hw->priv;
7259
7260 IWL_DEBUG_MAC80211("enter\n");
7261
7262 /* we should be verifying the device is ready to be opened */
7263 mutex_lock(&priv->mutex);
7264
7265 priv->is_open = 1;
7266
7267 if (!iwl_is_rfkill(priv))
7268 ieee80211_start_queues(priv->hw);
7269
7270 mutex_unlock(&priv->mutex);
7271 IWL_DEBUG_MAC80211("leave\n");
7272 return 0;
7273}
7274
4150c572 7275static void iwl_mac_stop(struct ieee80211_hw *hw)
b481de9c
ZY		 7276{
7277 struct iwl_priv *priv = hw->priv;
7278
7279 IWL_DEBUG_MAC80211("enter\n");
7280 priv->is_open = 0;
7281 /*netif_stop_queue(dev); */
7282 flush_workqueue(priv->workqueue);
7283 IWL_DEBUG_MAC80211("leave\n");
b481de9c
ZY		 7284}
7285
7286static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
7287 struct ieee80211_tx_control *ctl)
7288{
7289 struct iwl_priv *priv = hw->priv;
7290
7291 IWL_DEBUG_MAC80211("enter\n");
7292
7293 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
7294 IWL_DEBUG_MAC80211("leave - monitor\n");
7295 return -1;
7296 }
7297
7298 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
7299 ctl->tx_rate);
7300
7301 if (iwl_tx_skb(priv, skb, ctl))
7302 dev_kfree_skb_any(skb);
7303
7304 IWL_DEBUG_MAC80211("leave\n");
7305 return 0;
7306}
7307
7308static int iwl_mac_add_interface(struct ieee80211_hw *hw,
7309 struct ieee80211_if_init_conf *conf)
7310{
7311 struct iwl_priv *priv = hw->priv;
7312 unsigned long flags;
0795af57 7313 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 7314
7315 IWL_DEBUG_MAC80211("enter: id %d, type %d\n", conf->if_id, conf->type);
7316 if (conf->mac_addr)
0795af57
JP		 7317 IWL_DEBUG_MAC80211("enter: MAC %s\n",
7318 print_mac(mac, conf->mac_addr));
b481de9c
ZY		 7319
7320 if (priv->interface_id) {
7321 IWL_DEBUG_MAC80211("leave - interface_id != 0\n");
7322 return 0;
7323 }
7324
7325 spin_lock_irqsave(&priv->lock, flags);
7326 priv->interface_id = conf->if_id;
7327
7328 spin_unlock_irqrestore(&priv->lock, flags);
7329
7330 mutex_lock(&priv->mutex);
7331 iwl_set_mode(priv, conf->type);
7332
7333 IWL_DEBUG_MAC80211("leave\n");
7334 mutex_unlock(&priv->mutex);
7335
7336 return 0;
7337}
7338
7339/**
7340 * iwl_mac_config - mac80211 config callback
7341 *
7342 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
7343 * be set inappropriately and the driver currently sets the hardware up to
7344 * use it whenever needed.
7345 */
7346static int iwl_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
7347{
7348 struct iwl_priv *priv = hw->priv;
7349 const struct iwl_channel_info *ch_info;
7350 unsigned long flags;
7351
7352 mutex_lock(&priv->mutex);
7353 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel);
7354
7355 if (!iwl_is_ready(priv)) {
7356 IWL_DEBUG_MAC80211("leave - not ready\n");
7357 mutex_unlock(&priv->mutex);
7358 return -EIO;
7359 }
7360
7361 /* TODO: Figure out how to get ieee80211_local->sta_scanning w/ only
7362 * what is exposed through include/ declrations */
7363 if (unlikely(!iwl_param_disable_hw_scan &&
7364 test_bit(STATUS_SCANNING, &priv->status))) {
7365 IWL_DEBUG_MAC80211("leave - scanning\n");
7366 mutex_unlock(&priv->mutex);
7367 return 0;
7368 }
7369
7370 spin_lock_irqsave(&priv->lock, flags);
7371
7372 ch_info = iwl_get_channel_info(priv, conf->phymode, conf->channel);
7373 if (!is_channel_valid(ch_info)) {
7374 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this SKU.\n",
7375 conf->channel, conf->phymode);
7376 IWL_DEBUG_MAC80211("leave - invalid channel\n");
7377 spin_unlock_irqrestore(&priv->lock, flags);
7378 mutex_unlock(&priv->mutex);
7379 return -EINVAL;
7380 }
7381
7382#ifdef CONFIG_IWLWIFI_HT
7383 /* if we are switching fron ht to 2.4 clear flags
7384 * from any ht related info since 2.4 does not
7385 * support ht */
7386 if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel)
7387#ifdef IEEE80211_CONF_CHANNEL_SWITCH
7388 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
7389#endif
7390 )
7391 priv->staging_rxon.flags = 0;
7392#endif /* CONFIG_IWLWIFI_HT */
7393
7394 iwl_set_rxon_channel(priv, conf->phymode, conf->channel);
7395
7396 iwl_set_flags_for_phymode(priv, conf->phymode);
7397
7398 /* The list of supported rates and rate mask can be different
7399 * for each phymode; since the phymode may have changed, reset
7400 * the rate mask to what mac80211 lists */
7401 iwl_set_rate(priv);
7402
7403 spin_unlock_irqrestore(&priv->lock, flags);
7404
7405#ifdef IEEE80211_CONF_CHANNEL_SWITCH
7406 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
7407 iwl_hw_channel_switch(priv, conf->channel);
7408 mutex_unlock(&priv->mutex);
7409 return 0;
7410 }
7411#endif
7412
7413 iwl_radio_kill_sw(priv, !conf->radio_enabled);
7414
7415 if (!conf->radio_enabled) {
7416 IWL_DEBUG_MAC80211("leave - radio disabled\n");
7417 mutex_unlock(&priv->mutex);
7418 return 0;
7419 }
7420
7421 if (iwl_is_rfkill(priv)) {
7422 IWL_DEBUG_MAC80211("leave - RF kill\n");
7423 mutex_unlock(&priv->mutex);
7424 return -EIO;
7425 }
7426
7427 iwl_set_rate(priv);
7428
7429 if (memcmp(&priv->active_rxon,
7430 &priv->staging_rxon, sizeof(priv->staging_rxon)))
7431 iwl_commit_rxon(priv);
7432 else
7433 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
7434
7435 IWL_DEBUG_MAC80211("leave\n");
7436
7437 mutex_unlock(&priv->mutex);
7438
7439 return 0;
7440}
7441
7442static void iwl_config_ap(struct iwl_priv *priv)
7443{
7444 int rc = 0;
7445
7446 if (priv->status & STATUS_EXIT_PENDING)
7447 return;
7448
7449 /* The following should be done only at AP bring up */
7450 if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
7451
7452 /* RXON - unassoc (to set timing command) */
7453 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7454 iwl_commit_rxon(priv);
7455
7456 /* RXON Timing */
7457 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
7458 iwl_setup_rxon_timing(priv);
7459 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7460 sizeof(priv->rxon_timing), &priv->rxon_timing);
7461 if (rc)
7462 IWL_WARNING("REPLY_RXON_TIMING failed - "
7463 "Attempting to continue.\n");
7464
7465 iwl4965_set_rxon_chain(priv);
7466
7467 /* FIXME: what should be the assoc_id for AP? */
7468 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7469 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7470 priv->staging_rxon.flags |=
7471 RXON_FLG_SHORT_PREAMBLE_MSK;
7472 else
7473 priv->staging_rxon.flags &=
7474 ~RXON_FLG_SHORT_PREAMBLE_MSK;
7475
7476 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7477 if (priv->assoc_capability &
7478 WLAN_CAPABILITY_SHORT_SLOT_TIME)
7479 priv->staging_rxon.flags |=
7480 RXON_FLG_SHORT_SLOT_MSK;
7481 else
7482 priv->staging_rxon.flags &=
7483 ~RXON_FLG_SHORT_SLOT_MSK;
7484
7485 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7486 priv->staging_rxon.flags &=
7487 ~RXON_FLG_SHORT_SLOT_MSK;
7488 }
7489 /* restore RXON assoc */
7490 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7491 iwl_commit_rxon(priv);
7492#ifdef CONFIG_IWLWIFI_QOS
7493 iwl_activate_qos(priv, 1);
7494#endif
7495 iwl_rxon_add_station(priv, BROADCAST_ADDR, 0);
7496 iwl_send_beacon_cmd(priv);
7497 } else
7498 iwl_send_beacon_cmd(priv);
7499
7500 /* FIXME - we need to add code here to detect a totally new
7501 * configuration, reset the AP, unassoc, rxon timing, assoc,
7502 * clear sta table, add BCAST sta... */
7503}
7504
7505static int iwl_mac_config_interface(struct ieee80211_hw *hw, int if_id,
7506 struct ieee80211_if_conf *conf)
7507{
7508 struct iwl_priv *priv = hw->priv;
0795af57 7509 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 7510 unsigned long flags;
7511 int rc;
7512
7513 if (conf == NULL)
7514 return -EIO;
7515
7516 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
7517 (!conf->beacon || !conf->ssid_len)) {
7518 IWL_DEBUG_MAC80211
7519 ("Leaving in AP mode because HostAPD is not ready.\n");
7520 return 0;
7521 }
7522
7523 mutex_lock(&priv->mutex);
7524
7525 IWL_DEBUG_MAC80211("enter: interface id %d\n", if_id);
7526 if (conf->bssid)
0795af57
JP		 7527 IWL_DEBUG_MAC80211("bssid: %s\n",
7528 print_mac(mac, conf->bssid));
b481de9c 7529
4150c572
JB		 7530/*
7531 * very dubious code was here; the probe filtering flag is never set:
7532 *
b481de9c
ZY		 7533 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
7534 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
4150c572
JB		 7535 */
7536 if (unlikely(test_bit(STATUS_SCANNING, &priv->status))) {
b481de9c
ZY		 7537 IWL_DEBUG_MAC80211("leave - scanning\n");
7538 mutex_unlock(&priv->mutex);
7539 return 0;
7540 }
7541
7542 if (priv->interface_id != if_id) {
7543 IWL_DEBUG_MAC80211("leave - interface_id != if_id\n");
7544 mutex_unlock(&priv->mutex);
7545 return 0;
7546 }
7547
7548 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7549 if (!conf->bssid) {
7550 conf->bssid = priv->mac_addr;
7551 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
0795af57
JP		 7552 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
7553 print_mac(mac, conf->bssid));
b481de9c
ZY		 7554 }
7555 if (priv->ibss_beacon)
7556 dev_kfree_skb(priv->ibss_beacon);
7557
7558 priv->ibss_beacon = conf->beacon;
7559 }
7560
7561 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
7562 !is_multicast_ether_addr(conf->bssid)) {
7563 /* If there is currently a HW scan going on in the background
7564 * then we need to cancel it else the RXON below will fail. */
7565 if (iwl_scan_cancel_timeout(priv, 100)) {
7566 IWL_WARNING("Aborted scan still in progress "
7567 "after 100ms\n");
7568 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
7569 mutex_unlock(&priv->mutex);
7570 return -EAGAIN;
7571 }
7572 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
7573
7574 /* TODO: Audit driver for usage of these members and see
7575 * if mac80211 deprecates them (priv->bssid looks like it
7576 * shouldn't be there, but I haven't scanned the IBSS code
7577 * to verify) - jpk */
7578 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
7579
7580 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7581 iwl_config_ap(priv);
7582 else {
7583 priv->staging_rxon.filter_flags |=
7584 RXON_FILTER_ASSOC_MSK;
7585 rc = iwl_commit_rxon(priv);
7586 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
7587 iwl_rxon_add_station(
7588 priv, priv->active_rxon.bssid_addr, 1);
7589 }
7590
7591 } else {
7592 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7593 iwl_commit_rxon(priv);
7594 }
7595
7596 spin_lock_irqsave(&priv->lock, flags);
7597 if (!conf->ssid_len)
7598 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7599 else
7600 memcpy(priv->essid, conf->ssid, conf->ssid_len);
7601
7602 priv->essid_len = conf->ssid_len;
7603 spin_unlock_irqrestore(&priv->lock, flags);
7604
7605 IWL_DEBUG_MAC80211("leave\n");
7606 mutex_unlock(&priv->mutex);
7607
7608 return 0;
7609}
7610
4150c572
JB		 7611static void iwl_configure_filter(struct ieee80211_hw *hw,
7612 unsigned int changed_flags,
7613 unsigned int *total_flags,
7614 int mc_count, struct dev_addr_list *mc_list)
7615{
7616 /*
7617 * XXX: dummy
7618 * see also iwl_connection_init_rx_config
7619 */
7620 *total_flags = 0;
7621}
7622
b481de9c
ZY		 7623static void iwl_mac_remove_interface(struct ieee80211_hw *hw,
7624 struct ieee80211_if_init_conf *conf)
7625{
7626 struct iwl_priv *priv = hw->priv;
7627
7628 IWL_DEBUG_MAC80211("enter\n");
7629
7630 mutex_lock(&priv->mutex);
7631 if (priv->interface_id == conf->if_id) {
7632 priv->interface_id = 0;
7633 memset(priv->bssid, 0, ETH_ALEN);
7634 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7635 priv->essid_len = 0;
7636 }
7637 mutex_unlock(&priv->mutex);
7638
7639 IWL_DEBUG_MAC80211("leave\n");
7640
7641}
7642
7643#define IWL_DELAY_NEXT_SCAN (HZ*2)
7644static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
7645{
7646 int rc = 0;
7647 unsigned long flags;
7648 struct iwl_priv *priv = hw->priv;
7649
7650 IWL_DEBUG_MAC80211("enter\n");
7651
7652 spin_lock_irqsave(&priv->lock, flags);
7653
7654 if (!iwl_is_ready_rf(priv)) {
7655 rc = -EIO;
7656 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
7657 goto out_unlock;
7658 }
7659
7660 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
7661 rc = -EIO;
7662 IWL_ERROR("ERROR: APs don't scan\n");
7663 goto out_unlock;
7664 }
7665
7666 /* if we just finished scan ask for delay */
7667 if (priv->last_scan_jiffies &&
7668 time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN,
7669 jiffies)) {
7670 rc = -EAGAIN;
7671 goto out_unlock;
7672 }
7673 if (len) {
7674 IWL_DEBUG_SCAN("direct scan for "
7675 "%s [%d]\n ",
7676 iwl_escape_essid(ssid, len), (int)len);
7677
7678 priv->one_direct_scan = 1;
7679 priv->direct_ssid_len = (u8)
7680 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
7681 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
7682 }
7683
7684 rc = iwl_scan_initiate(priv);
7685
7686 IWL_DEBUG_MAC80211("leave\n");
7687
7688out_unlock:
7689 spin_unlock_irqrestore(&priv->lock, flags);
7690
7691 return rc;
7692}
7693
ea49c359 7694static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
b481de9c
ZY		 7695 const u8 *local_addr, const u8 *addr,
7696 struct ieee80211_key_conf *key)
7697{
7698 struct iwl_priv *priv = hw->priv;
0795af57 7699 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 7700 int rc = 0;
7701 u8 sta_id;
7702
7703 IWL_DEBUG_MAC80211("enter\n");
7704
7705 if (!iwl_param_hwcrypto) {
7706 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7707 return -EOPNOTSUPP;
7708 }
7709
7710 if (is_zero_ether_addr(addr))
7711 /* only support pairwise keys */
7712 return -EOPNOTSUPP;
7713
7714 sta_id = iwl_hw_find_station(priv, addr);
7715 if (sta_id == IWL_INVALID_STATION) {
0795af57
JP		 7716 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7717 print_mac(mac, addr));
b481de9c
ZY		 7718 return -EINVAL;
7719 }
7720
7721 mutex_lock(&priv->mutex);
7722
7723 switch (cmd) {
7724 case SET_KEY:
7725 rc = iwl_update_sta_key_info(priv, key, sta_id);
7726 if (!rc) {
7727 iwl_set_rxon_hwcrypto(priv, 1);
7728 iwl_commit_rxon(priv);
7729 key->hw_key_idx = sta_id;
7730 IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7731 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
7732 }
7733 break;
7734 case DISABLE_KEY:
7735 rc = iwl_clear_sta_key_info(priv, sta_id);
7736 if (!rc) {
7737 iwl_set_rxon_hwcrypto(priv, 0);
7738 iwl_commit_rxon(priv);
7739 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7740 }
7741 break;
7742 default:
7743 rc = -EINVAL;
7744 }
7745
7746 IWL_DEBUG_MAC80211("leave\n");
7747 mutex_unlock(&priv->mutex);
7748
7749 return rc;
7750}
7751
7752static int iwl_mac_conf_tx(struct ieee80211_hw *hw, int queue,
7753 const struct ieee80211_tx_queue_params *params)
7754{
7755 struct iwl_priv *priv = hw->priv;
7756#ifdef CONFIG_IWLWIFI_QOS
7757 unsigned long flags;
7758 int q;
7759#endif /* CONFIG_IWL_QOS */
7760
7761 IWL_DEBUG_MAC80211("enter\n");
7762
7763 if (!iwl_is_ready_rf(priv)) {
7764 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7765 return -EIO;
7766 }
7767
7768 if (queue >= AC_NUM) {
7769 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7770 return 0;
7771 }
7772
7773#ifdef CONFIG_IWLWIFI_QOS
7774 if (!priv->qos_data.qos_enable) {
7775 priv->qos_data.qos_active = 0;
7776 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7777 return 0;
7778 }
7779 q = AC_NUM - 1 - queue;
7780
7781 spin_lock_irqsave(&priv->lock, flags);
7782
7783 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
7784 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
7785 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
7786 priv->qos_data.def_qos_parm.ac[q].edca_txop =
7787 cpu_to_le16((params->burst_time * 100));
7788
7789 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
7790 priv->qos_data.qos_active = 1;
7791
7792 spin_unlock_irqrestore(&priv->lock, flags);
7793
7794 mutex_lock(&priv->mutex);
7795 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7796 iwl_activate_qos(priv, 1);
7797 else if (priv->assoc_id && iwl_is_associated(priv))
7798 iwl_activate_qos(priv, 0);
7799
7800 mutex_unlock(&priv->mutex);
7801
7802#endif /*CONFIG_IWLWIFI_QOS */
7803
7804 IWL_DEBUG_MAC80211("leave\n");
7805 return 0;
7806}
7807
7808static int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
7809 struct ieee80211_tx_queue_stats *stats)
7810{
7811 struct iwl_priv *priv = hw->priv;
7812 int i, avail;
7813 struct iwl_tx_queue *txq;
7814 struct iwl_queue *q;
7815 unsigned long flags;
7816
7817 IWL_DEBUG_MAC80211("enter\n");
7818
7819 if (!iwl_is_ready_rf(priv)) {
7820 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7821 return -EIO;
7822 }
7823
7824 spin_lock_irqsave(&priv->lock, flags);
7825
7826 for (i = 0; i < AC_NUM; i++) {
7827 txq = &priv->txq[i];
7828 q = &txq->q;
7829 avail = iwl_queue_space(q);
7830
7831 stats->data[i].len = q->n_window - avail;
7832 stats->data[i].limit = q->n_window - q->high_mark;
7833 stats->data[i].count = q->n_window;
7834
7835 }
7836 spin_unlock_irqrestore(&priv->lock, flags);
7837
7838 IWL_DEBUG_MAC80211("leave\n");
7839
7840 return 0;
7841}
7842
7843static int iwl_mac_get_stats(struct ieee80211_hw *hw,
7844 struct ieee80211_low_level_stats *stats)
7845{
7846 IWL_DEBUG_MAC80211("enter\n");
7847 IWL_DEBUG_MAC80211("leave\n");
7848
7849 return 0;
7850}
7851
7852static u64 iwl_mac_get_tsf(struct ieee80211_hw *hw)
7853{
7854 IWL_DEBUG_MAC80211("enter\n");
7855 IWL_DEBUG_MAC80211("leave\n");
7856
7857 return 0;
7858}
7859
7860static void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
7861{
7862 struct iwl_priv *priv = hw->priv;
7863 unsigned long flags;
7864
7865 mutex_lock(&priv->mutex);
7866 IWL_DEBUG_MAC80211("enter\n");
7867
7868 priv->lq_mngr.lq_ready = 0;
7869#ifdef CONFIG_IWLWIFI_HT
7870 spin_lock_irqsave(&priv->lock, flags);
7871 memset(&priv->current_assoc_ht, 0, sizeof(struct sta_ht_info));
7872 spin_unlock_irqrestore(&priv->lock, flags);
7873#ifdef CONFIG_IWLWIFI_HT_AGG
7874/* if (priv->lq_mngr.agg_ctrl.granted_ba)
7875 iwl4965_turn_off_agg(priv, TID_ALL_SPECIFIED);*/
7876
7877 memset(&(priv->lq_mngr.agg_ctrl), 0, sizeof(struct iwl_agg_control));
7878 priv->lq_mngr.agg_ctrl.tid_traffic_load_threshold = 10;
7879 priv->lq_mngr.agg_ctrl.ba_timeout = 5000;
7880 priv->lq_mngr.agg_ctrl.auto_agg = 1;
7881
7882 if (priv->lq_mngr.agg_ctrl.auto_agg)
7883 priv->lq_mngr.agg_ctrl.requested_ba = TID_ALL_ENABLED;
7884#endif /*CONFIG_IWLWIFI_HT_AGG */
7885#endif /* CONFIG_IWLWIFI_HT */
7886
7887#ifdef CONFIG_IWLWIFI_QOS
7888 iwl_reset_qos(priv);
7889#endif
7890
7891 cancel_delayed_work(&priv->post_associate);
7892
7893 spin_lock_irqsave(&priv->lock, flags);
7894 priv->assoc_id = 0;
7895 priv->assoc_capability = 0;
7896 priv->call_post_assoc_from_beacon = 0;
7897 priv->assoc_station_added = 0;
7898
7899 /* new association get rid of ibss beacon skb */
7900 if (priv->ibss_beacon)
7901 dev_kfree_skb(priv->ibss_beacon);
7902
7903 priv->ibss_beacon = NULL;
7904
7905 priv->beacon_int = priv->hw->conf.beacon_int;
7906 priv->timestamp1 = 0;
7907 priv->timestamp0 = 0;
7908 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
7909 priv->beacon_int = 0;
7910
7911 spin_unlock_irqrestore(&priv->lock, flags);
7912
7913 /* Per mac80211.h: This is only used in IBSS mode... */
7914 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7915 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7916 mutex_unlock(&priv->mutex);
7917 return;
7918 }
7919
7920 if (!iwl_is_ready_rf(priv)) {
7921 IWL_DEBUG_MAC80211("leave - not ready\n");
7922 mutex_unlock(&priv->mutex);
7923 return;
7924 }
7925
7926 priv->only_active_channel = 0;
7927
7928 iwl_set_rate(priv);
7929
7930 mutex_unlock(&priv->mutex);
7931
7932 IWL_DEBUG_MAC80211("leave\n");
7933
7934}
7935
7936static int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
7937 struct ieee80211_tx_control *control)
7938{
7939 struct iwl_priv *priv = hw->priv;
7940 unsigned long flags;
7941
7942 mutex_lock(&priv->mutex);
7943 IWL_DEBUG_MAC80211("enter\n");
7944
7945 if (!iwl_is_ready_rf(priv)) {
7946 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7947 mutex_unlock(&priv->mutex);
7948 return -EIO;
7949 }
7950
7951 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7952 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7953 mutex_unlock(&priv->mutex);
7954 return -EIO;
7955 }
7956
7957 spin_lock_irqsave(&priv->lock, flags);
7958
7959 if (priv->ibss_beacon)
7960 dev_kfree_skb(priv->ibss_beacon);
7961
7962 priv->ibss_beacon = skb;
7963
7964 priv->assoc_id = 0;
7965
7966 IWL_DEBUG_MAC80211("leave\n");
7967 spin_unlock_irqrestore(&priv->lock, flags);
7968
7969#ifdef CONFIG_IWLWIFI_QOS
7970 iwl_reset_qos(priv);
7971#endif
7972
7973 queue_work(priv->workqueue, &priv->post_associate.work);
7974
7975 mutex_unlock(&priv->mutex);
7976
7977 return 0;
7978}
7979
7980#ifdef CONFIG_IWLWIFI_HT
7981union ht_cap_info {
7982 struct {
7983 u16 advanced_coding_cap :1;
7984 u16 supported_chan_width_set :1;
7985 u16 mimo_power_save_mode :2;
7986 u16 green_field :1;
7987 u16 short_GI20 :1;
7988 u16 short_GI40 :1;
7989 u16 tx_stbc :1;
7990 u16 rx_stbc :1;
7991 u16 beam_forming :1;
7992 u16 delayed_ba :1;
7993 u16 maximal_amsdu_size :1;
7994 u16 cck_mode_at_40MHz :1;
7995 u16 psmp_support :1;
7996 u16 stbc_ctrl_frame_support :1;
7997 u16 sig_txop_protection_support :1;
7998 };
7999 u16 val;
8000} __attribute__ ((packed));
8001
8002union ht_param_info{
8003 struct {
8004 u8 max_rx_ampdu_factor :2;
8005 u8 mpdu_density :3;
8006 u8 reserved :3;
8007 };
8008 u8 val;
8009} __attribute__ ((packed));
8010
8011union ht_exra_param_info {
8012 struct {
8013 u8 ext_chan_offset :2;
8014 u8 tx_chan_width :1;
8015 u8 rifs_mode :1;
8016 u8 controlled_access_only :1;
8017 u8 service_interval_granularity :3;
8018 };
8019 u8 val;
8020} __attribute__ ((packed));
8021
8022union ht_operation_mode{
8023 struct {
8024 u16 op_mode :2;
8025 u16 non_GF :1;
8026 u16 reserved :13;
8027 };
8028 u16 val;
8029} __attribute__ ((packed));
8030
8031
8032static int sta_ht_info_init(struct ieee80211_ht_capability *ht_cap,
8033 struct ieee80211_ht_additional_info *ht_extra,
8034 struct sta_ht_info *ht_info_ap,
8035 struct sta_ht_info *ht_info)
8036{
8037 union ht_cap_info cap;
8038 union ht_operation_mode op_mode;
8039 union ht_param_info param_info;
8040 union ht_exra_param_info extra_param_info;
8041
8042 IWL_DEBUG_MAC80211("enter: \n");
8043
8044 if (!ht_info) {
8045 IWL_DEBUG_MAC80211("leave: ht_info is NULL\n");
8046 return -1;
8047 }
8048
8049 if (ht_cap) {
8050 cap.val = (u16) le16_to_cpu(ht_cap->capabilities_info);
8051 param_info.val = ht_cap->mac_ht_params_info;
8052 ht_info->is_ht = 1;
8053 if (cap.short_GI20)
8054 ht_info->sgf |= 0x1;
8055 if (cap.short_GI40)
8056 ht_info->sgf |= 0x2;
8057 ht_info->is_green_field = cap.green_field;
8058 ht_info->max_amsdu_size = cap.maximal_amsdu_size;
8059 ht_info->supported_chan_width = cap.supported_chan_width_set;
8060 ht_info->tx_mimo_ps_mode = cap.mimo_power_save_mode;
8061 memcpy(ht_info->supp_rates, ht_cap->supported_mcs_set, 16);
8062
8063 ht_info->ampdu_factor = param_info.max_rx_ampdu_factor;
8064 ht_info->mpdu_density = param_info.mpdu_density;
8065
8066 IWL_DEBUG_MAC80211("SISO mask 0x%X MIMO mask 0x%X \n",
8067 ht_cap->supported_mcs_set[0],
8068 ht_cap->supported_mcs_set[1]);
8069
8070 if (ht_info_ap) {
8071 ht_info->control_channel = ht_info_ap->control_channel;
8072 ht_info->extension_chan_offset =
8073 ht_info_ap->extension_chan_offset;
8074 ht_info->tx_chan_width = ht_info_ap->tx_chan_width;
8075 ht_info->operating_mode = ht_info_ap->operating_mode;
8076 }
8077
8078 if (ht_extra) {
8079 extra_param_info.val = ht_extra->ht_param;
8080 ht_info->control_channel = ht_extra->control_chan;
8081 ht_info->extension_chan_offset =
8082 extra_param_info.ext_chan_offset;
8083 ht_info->tx_chan_width = extra_param_info.tx_chan_width;
8084 op_mode.val = (u16)
8085 le16_to_cpu(ht_extra->operation_mode);
8086 ht_info->operating_mode = op_mode.op_mode;
8087 IWL_DEBUG_MAC80211("control channel %d\n",
8088 ht_extra->control_chan);
8089 }
8090 } else
8091 ht_info->is_ht = 0;
8092
8093 IWL_DEBUG_MAC80211("leave\n");
8094 return 0;
8095}
8096
8097static int iwl_mac_conf_ht(struct ieee80211_hw *hw,
8098 struct ieee80211_ht_capability *ht_cap,
8099 struct ieee80211_ht_additional_info *ht_extra)
8100{
8101 struct iwl_priv *priv = hw->priv;
8102 int rs;
8103
8104 IWL_DEBUG_MAC80211("enter: \n");
8105
8106 rs = sta_ht_info_init(ht_cap, ht_extra, NULL, &priv->current_assoc_ht);
8107 iwl4965_set_rxon_chain(priv);
8108
8109 if (priv && priv->assoc_id &&
8110 (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
8111 unsigned long flags;
8112
8113 spin_lock_irqsave(&priv->lock, flags);
8114 if (priv->beacon_int)
8115 queue_work(priv->workqueue, &priv->post_associate.work);
8116 else
8117 priv->call_post_assoc_from_beacon = 1;
8118 spin_unlock_irqrestore(&priv->lock, flags);
8119 }
8120
8121 IWL_DEBUG_MAC80211("leave: control channel %d\n",
8122 ht_extra->control_chan);
8123 return rs;
8124
8125}
8126
8127static void iwl_set_ht_capab(struct ieee80211_hw *hw,
8128 struct ieee80211_ht_capability *ht_cap,
8129 u8 use_wide_chan)
8130{
8131 union ht_cap_info cap;
8132 union ht_param_info param_info;
8133
8134 memset(&cap, 0, sizeof(union ht_cap_info));
8135 memset(&param_info, 0, sizeof(union ht_param_info));
8136
8137 cap.maximal_amsdu_size = HT_IE_MAX_AMSDU_SIZE_4K;
8138 cap.green_field = 1;
8139 cap.short_GI20 = 1;
8140 cap.short_GI40 = 1;
8141 cap.supported_chan_width_set = use_wide_chan;
8142 cap.mimo_power_save_mode = 0x3;
8143
8144 param_info.max_rx_ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
8145 param_info.mpdu_density = CFG_HT_MPDU_DENSITY_DEF;
8146 ht_cap->capabilities_info = (__le16) cpu_to_le16(cap.val);
8147 ht_cap->mac_ht_params_info = (u8) param_info.val;
8148
8149 ht_cap->supported_mcs_set[0] = 0xff;
8150 ht_cap->supported_mcs_set[1] = 0xff;
8151 ht_cap->supported_mcs_set[4] =
8152 (cap.supported_chan_width_set) ? 0x1: 0x0;
8153}
8154
8155static void iwl_mac_get_ht_capab(struct ieee80211_hw *hw,
8156 struct ieee80211_ht_capability *ht_cap)
8157{
8158 u8 use_wide_channel = 1;
8159 struct iwl_priv *priv = hw->priv;
8160
8161 IWL_DEBUG_MAC80211("enter: \n");
8162 if (priv->channel_width != IWL_CHANNEL_WIDTH_40MHZ)
8163 use_wide_channel = 0;
8164
8165 /* no fat tx allowed on 2.4GHZ */
8166 if (priv->phymode != MODE_IEEE80211A)
8167 use_wide_channel = 0;
8168
8169 iwl_set_ht_capab(hw, ht_cap, use_wide_channel);
8170 IWL_DEBUG_MAC80211("leave: \n");
8171}
8172#endif /*CONFIG_IWLWIFI_HT*/
8173
8174/*****************************************************************************
8175 *
8176 * sysfs attributes
8177 *
8178 *****************************************************************************/
8179
8180#ifdef CONFIG_IWLWIFI_DEBUG
8181
8182/*
8183 * The following adds a new attribute to the sysfs representation
8184 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
8185 * used for controlling the debug level.
8186 *
8187 * See the level definitions in iwl for details.
8188 */
8189
8190static ssize_t show_debug_level(struct device_driver *d, char *buf)
8191{
8192 return sprintf(buf, "0x%08X\n", iwl_debug_level);
8193}
8194static ssize_t store_debug_level(struct device_driver *d,
8195 const char *buf, size_t count)
8196{
8197 char *p = (char *)buf;
8198 u32 val;
8199
8200 val = simple_strtoul(p, &p, 0);
8201 if (p == buf)
8202 printk(KERN_INFO DRV_NAME
8203 ": %s is not in hex or decimal form.\n", buf);
8204 else
8205 iwl_debug_level = val;
8206
8207 return strnlen(buf, count);
8208}
8209
8210static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
8211 show_debug_level, store_debug_level);
8212
8213#endif /* CONFIG_IWLWIFI_DEBUG */
8214
8215static ssize_t show_rf_kill(struct device *d,
8216 struct device_attribute *attr, char *buf)
8217{
8218 /*
8219 * 0 - RF kill not enabled
8220 * 1 - SW based RF kill active (sysfs)
8221 * 2 - HW based RF kill active
8222 * 3 - Both HW and SW based RF kill active
8223 */
8224 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8225 int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) |
8226 (test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0);
8227
8228 return sprintf(buf, "%i\n", val);
8229}
8230
8231static ssize_t store_rf_kill(struct device *d,
8232 struct device_attribute *attr,
8233 const char *buf, size_t count)
8234{
8235 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8236
8237 mutex_lock(&priv->mutex);
8238 iwl_radio_kill_sw(priv, buf[0] == '1');
8239 mutex_unlock(&priv->mutex);
8240
8241 return count;
8242}
8243
8244static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);
8245
8246static ssize_t show_temperature(struct device *d,
8247 struct device_attribute *attr, char *buf)
8248{
8249 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8250
8251 if (!iwl_is_alive(priv))
8252 return -EAGAIN;
8253
8254 return sprintf(buf, "%d\n", iwl_hw_get_temperature(priv));
8255}
8256
8257static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
8258
8259static ssize_t show_rs_window(struct device *d,
8260 struct device_attribute *attr,
8261 char *buf)
8262{
8263 struct iwl_priv *priv = d->driver_data;
8264 return iwl_fill_rs_info(priv->hw, buf, IWL_AP_ID);
8265}
8266static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
8267
8268static ssize_t show_tx_power(struct device *d,
8269 struct device_attribute *attr, char *buf)
8270{
8271 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8272 return sprintf(buf, "%d\n", priv->user_txpower_limit);
8273}
8274
8275static ssize_t store_tx_power(struct device *d,
8276 struct device_attribute *attr,
8277 const char *buf, size_t count)
8278{
8279 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8280 char *p = (char *)buf;
8281 u32 val;
8282
8283 val = simple_strtoul(p, &p, 10);
8284 if (p == buf)
8285 printk(KERN_INFO DRV_NAME
8286 ": %s is not in decimal form.\n", buf);
8287 else
8288 iwl_hw_reg_set_txpower(priv, val);
8289
8290 return count;
8291}
8292
8293static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
8294
8295static ssize_t show_flags(struct device *d,
8296 struct device_attribute *attr, char *buf)
8297{
8298 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8299
8300 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
8301}
8302
8303static ssize_t store_flags(struct device *d,
8304 struct device_attribute *attr,
8305 const char *buf, size_t count)
8306{
8307 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8308 u32 flags = simple_strtoul(buf, NULL, 0);
8309
8310 mutex_lock(&priv->mutex);
8311 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
8312 /* Cancel any currently running scans... */
8313 if (iwl_scan_cancel_timeout(priv, 100))
8314 IWL_WARNING("Could not cancel scan.\n");
8315 else {
8316 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
8317 flags);
8318 priv->staging_rxon.flags = cpu_to_le32(flags);
8319 iwl_commit_rxon(priv);
8320 }
8321 }
8322 mutex_unlock(&priv->mutex);
8323
8324 return count;
8325}
8326
8327static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
8328
8329static ssize_t show_filter_flags(struct device *d,
8330 struct device_attribute *attr, char *buf)
8331{
8332 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8333
8334 return sprintf(buf, "0x%04X\n",
8335 le32_to_cpu(priv->active_rxon.filter_flags));
8336}
8337
8338static ssize_t store_filter_flags(struct device *d,
8339 struct device_attribute *attr,
8340 const char *buf, size_t count)
8341{
8342 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8343 u32 filter_flags = simple_strtoul(buf, NULL, 0);
8344
8345 mutex_lock(&priv->mutex);
8346 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
8347 /* Cancel any currently running scans... */
8348 if (iwl_scan_cancel_timeout(priv, 100))
8349 IWL_WARNING("Could not cancel scan.\n");
8350 else {
8351 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
8352 "0x%04X\n", filter_flags);
8353 priv->staging_rxon.filter_flags =
8354 cpu_to_le32(filter_flags);
8355 iwl_commit_rxon(priv);
8356 }
8357 }
8358 mutex_unlock(&priv->mutex);
8359
8360 return count;
8361}
8362
8363static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
8364 store_filter_flags);
8365
8366static ssize_t show_tune(struct device *d,
8367 struct device_attribute *attr, char *buf)
8368{
8369 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8370
8371 return sprintf(buf, "0x%04X\n",
8372 (priv->phymode << 8) |
8373 le16_to_cpu(priv->active_rxon.channel));
8374}
8375
8376static void iwl_set_flags_for_phymode(struct iwl_priv *priv, u8 phymode);
8377
8378static ssize_t store_tune(struct device *d,
8379 struct device_attribute *attr,
8380 const char *buf, size_t count)
8381{
8382 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8383 char *p = (char *)buf;
8384 u16 tune = simple_strtoul(p, &p, 0);
8385 u8 phymode = (tune >> 8) & 0xff;
8386 u16 channel = tune & 0xff;
8387
8388 IWL_DEBUG_INFO("Tune request to:%d channel:%d\n", phymode, channel);
8389
8390 mutex_lock(&priv->mutex);
8391 if ((le16_to_cpu(priv->staging_rxon.channel) != channel) ||
8392 (priv->phymode != phymode)) {
8393 const struct iwl_channel_info *ch_info;
8394
8395 ch_info = iwl_get_channel_info(priv, phymode, channel);
8396 if (!ch_info) {
8397 IWL_WARNING("Requested invalid phymode/channel "
8398 "combination: %d %d\n", phymode, channel);
8399 mutex_unlock(&priv->mutex);
8400 return -EINVAL;
8401 }
8402
8403 /* Cancel any currently running scans... */
8404 if (iwl_scan_cancel_timeout(priv, 100))
8405 IWL_WARNING("Could not cancel scan.\n");
8406 else {
8407 IWL_DEBUG_INFO("Committing phymode and "
8408 "rxon.channel = %d %d\n",
8409 phymode, channel);
8410
8411 iwl_set_rxon_channel(priv, phymode, channel);
8412 iwl_set_flags_for_phymode(priv, phymode);
8413
8414 iwl_set_rate(priv);
8415 iwl_commit_rxon(priv);
8416 }
8417 }
8418 mutex_unlock(&priv->mutex);
8419
8420 return count;
8421}
8422
8423static DEVICE_ATTR(tune, S_IWUSR | S_IRUGO, show_tune, store_tune);
8424
8425#ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
8426
8427static ssize_t show_measurement(struct device *d,
8428 struct device_attribute *attr, char *buf)
8429{
8430 struct iwl_priv *priv = dev_get_drvdata(d);
8431 struct iwl_spectrum_notification measure_report;
8432 u32 size = sizeof(measure_report), len = 0, ofs = 0;
8433 u8 *data = (u8 *) & measure_report;
8434 unsigned long flags;
8435
8436 spin_lock_irqsave(&priv->lock, flags);
8437 if (!(priv->measurement_status & MEASUREMENT_READY)) {
8438 spin_unlock_irqrestore(&priv->lock, flags);
8439 return 0;
8440 }
8441 memcpy(&measure_report, &priv->measure_report, size);
8442 priv->measurement_status = 0;
8443 spin_unlock_irqrestore(&priv->lock, flags);
8444
8445 while (size && (PAGE_SIZE - len)) {
8446 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8447 PAGE_SIZE - len, 1);
8448 len = strlen(buf);
8449 if (PAGE_SIZE - len)
8450 buf[len++] = '\n';
8451
8452 ofs += 16;
8453 size -= min(size, 16U);
8454 }
8455
8456 return len;
8457}
8458
8459static ssize_t store_measurement(struct device *d,
8460 struct device_attribute *attr,
8461 const char *buf, size_t count)
8462{
8463 struct iwl_priv *priv = dev_get_drvdata(d);
8464 struct ieee80211_measurement_params params = {
8465 .channel = le16_to_cpu(priv->active_rxon.channel),
8466 .start_time = cpu_to_le64(priv->last_tsf),
8467 .duration = cpu_to_le16(1),
8468 };
8469 u8 type = IWL_MEASURE_BASIC;
8470 u8 buffer[32];
8471 u8 channel;
8472
8473 if (count) {
8474 char *p = buffer;
8475 strncpy(buffer, buf, min(sizeof(buffer), count));
8476 channel = simple_strtoul(p, NULL, 0);
8477 if (channel)
8478 params.channel = channel;
8479
8480 p = buffer;
8481 while (*p && *p != ' ')
8482 p++;
8483 if (*p)
8484 type = simple_strtoul(p + 1, NULL, 0);
8485 }
8486
8487 IWL_DEBUG_INFO("Invoking measurement of type %d on "
8488 "channel %d (for '%s')\n", type, params.channel, buf);
8489 iwl_get_measurement(priv, &params, type);
8490
8491 return count;
8492}
8493
8494static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
8495 show_measurement, store_measurement);
8496#endif /* CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT */
8497
8498static ssize_t store_retry_rate(struct device *d,
8499 struct device_attribute *attr,
8500 const char *buf, size_t count)
8501{
8502 struct iwl_priv *priv = dev_get_drvdata(d);
8503
8504 priv->retry_rate = simple_strtoul(buf, NULL, 0);
8505 if (priv->retry_rate <= 0)
8506 priv->retry_rate = 1;
8507
8508 return count;
8509}
8510
8511static ssize_t show_retry_rate(struct device *d,
8512 struct device_attribute *attr, char *buf)
8513{
8514 struct iwl_priv *priv = dev_get_drvdata(d);
8515 return sprintf(buf, "%d", priv->retry_rate);
8516}
8517
8518static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
8519 store_retry_rate);
8520
8521static ssize_t store_power_level(struct device *d,
8522 struct device_attribute *attr,
8523 const char *buf, size_t count)
8524{
8525 struct iwl_priv *priv = dev_get_drvdata(d);
8526 int rc;
8527 int mode;
8528
8529 mode = simple_strtoul(buf, NULL, 0);
8530 mutex_lock(&priv->mutex);
8531
8532 if (!iwl_is_ready(priv)) {
8533 rc = -EAGAIN;
8534 goto out;
8535 }
8536
8537 if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
8538 mode = IWL_POWER_AC;
8539 else
8540 mode |= IWL_POWER_ENABLED;
8541
8542 if (mode != priv->power_mode) {
8543 rc = iwl_send_power_mode(priv, IWL_POWER_LEVEL(mode));
8544 if (rc) {
8545 IWL_DEBUG_MAC80211("failed setting power mode.\n");
8546 goto out;
8547 }
8548 priv->power_mode = mode;
8549 }
8550
8551 rc = count;
8552
8553 out:
8554 mutex_unlock(&priv->mutex);
8555 return rc;
8556}
8557
8558#define MAX_WX_STRING 80
8559
8560/* Values are in microsecond */
8561static const s32 timeout_duration[] = {
8562 350000,
8563 250000,
8564 75000,
8565 37000,
8566 25000,
8567};
8568static const s32 period_duration[] = {
8569 400000,
8570 700000,
8571 1000000,
8572 1000000,
8573 1000000
8574};
8575
8576static ssize_t show_power_level(struct device *d,
8577 struct device_attribute *attr, char *buf)
8578{
8579 struct iwl_priv *priv = dev_get_drvdata(d);
8580 int level = IWL_POWER_LEVEL(priv->power_mode);
8581 char *p = buf;
8582
8583 p += sprintf(p, "%d ", level);
8584 switch (level) {
8585 case IWL_POWER_MODE_CAM:
8586 case IWL_POWER_AC:
8587 p += sprintf(p, "(AC)");
8588 break;
8589 case IWL_POWER_BATTERY:
8590 p += sprintf(p, "(BATTERY)");
8591 break;
8592 default:
8593 p += sprintf(p,
8594 "(Timeout %dms, Period %dms)",
8595 timeout_duration[level - 1] / 1000,
8596 period_duration[level - 1] / 1000);
8597 }
8598
8599 if (!(priv->power_mode & IWL_POWER_ENABLED))
8600 p += sprintf(p, " OFF\n");
8601 else
8602 p += sprintf(p, " \n");
8603
8604 return (p - buf + 1);
8605
8606}
8607
8608static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
8609 store_power_level);
8610
8611static ssize_t show_channels(struct device *d,
8612 struct device_attribute *attr, char *buf)
8613{
8614 struct iwl_priv *priv = dev_get_drvdata(d);
8615 int len = 0, i;
8616 struct ieee80211_channel *channels = NULL;
8617 const struct ieee80211_hw_mode *hw_mode = NULL;
8618 int count = 0;
8619
8620 if (!iwl_is_ready(priv))
8621 return -EAGAIN;
8622
8623 hw_mode = iwl_get_hw_mode(priv, MODE_IEEE80211G);
8624 if (!hw_mode)
8625 hw_mode = iwl_get_hw_mode(priv, MODE_IEEE80211B);
8626 if (hw_mode) {
8627 channels = hw_mode->channels;
8628 count = hw_mode->num_channels;
8629 }
8630
8631 len +=
8632 sprintf(&buf[len],
8633 "Displaying %d channels in 2.4GHz band "
8634 "(802.11bg):\n", count);
8635
8636 for (i = 0; i < count; i++)
8637 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8638 channels[i].chan,
8639 channels[i].power_level,
8640 channels[i].
8641 flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8642 " (IEEE 802.11h required)" : "",
8643 (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8644 || (channels[i].
8645 flag &
8646 IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8647 ", IBSS",
8648 channels[i].
8649 flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8650 "active/passive" : "passive only");
8651
8652 hw_mode = iwl_get_hw_mode(priv, MODE_IEEE80211A);
8653 if (hw_mode) {
8654 channels = hw_mode->channels;
8655 count = hw_mode->num_channels;
8656 } else {
8657 channels = NULL;
8658 count = 0;
8659 }
8660
8661 len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
8662 "(802.11a):\n", count);
8663
8664 for (i = 0; i < count; i++)
8665 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8666 channels[i].chan,
8667 channels[i].power_level,
8668 channels[i].
8669 flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8670 " (IEEE 802.11h required)" : "",
8671 (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8672 || (channels[i].
8673 flag &
8674 IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8675 ", IBSS",
8676 channels[i].
8677 flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8678 "active/passive" : "passive only");
8679
8680 return len;
8681}
8682
8683static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
8684
8685static ssize_t show_statistics(struct device *d,
8686 struct device_attribute *attr, char *buf)
8687{
8688 struct iwl_priv *priv = dev_get_drvdata(d);
8689 u32 size = sizeof(struct iwl_notif_statistics);
8690 u32 len = 0, ofs = 0;
8691 u8 *data = (u8 *) & priv->statistics;
8692 int rc = 0;
8693
8694 if (!iwl_is_alive(priv))
8695 return -EAGAIN;
8696
8697 mutex_lock(&priv->mutex);
8698 rc = iwl_send_statistics_request(priv);
8699 mutex_unlock(&priv->mutex);
8700
8701 if (rc) {
8702 len = sprintf(buf,
8703 "Error sending statistics request: 0x%08X\n", rc);
8704 return len;
8705 }
8706
8707 while (size && (PAGE_SIZE - len)) {
8708 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8709 PAGE_SIZE - len, 1);
8710 len = strlen(buf);
8711 if (PAGE_SIZE - len)
8712 buf[len++] = '\n';
8713
8714 ofs += 16;
8715 size -= min(size, 16U);
8716 }
8717
8718 return len;
8719}
8720
8721static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
8722
8723static ssize_t show_antenna(struct device *d,
8724 struct device_attribute *attr, char *buf)
8725{
8726 struct iwl_priv *priv = dev_get_drvdata(d);
8727
8728 if (!iwl_is_alive(priv))
8729 return -EAGAIN;
8730
8731 return sprintf(buf, "%d\n", priv->antenna);
8732}
8733
8734static ssize_t store_antenna(struct device *d,
8735 struct device_attribute *attr,
8736 const char *buf, size_t count)
8737{
8738 int ant;
8739 struct iwl_priv *priv = dev_get_drvdata(d);
8740
8741 if (count == 0)
8742 return 0;
8743
8744 if (sscanf(buf, "%1i", &ant) != 1) {
8745 IWL_DEBUG_INFO("not in hex or decimal form.\n");
8746 return count;
8747 }
8748
8749 if ((ant >= 0) && (ant <= 2)) {
8750 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
8751 priv->antenna = (enum iwl_antenna)ant;
8752 } else
8753 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
8754
8755
8756 return count;
8757}
8758
8759static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
8760
8761static ssize_t show_status(struct device *d,
8762 struct device_attribute *attr, char *buf)
8763{
8764 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8765 if (!iwl_is_alive(priv))
8766 return -EAGAIN;
8767 return sprintf(buf, "0x%08x\n", (int)priv->status);
8768}
8769
8770static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
8771
8772static ssize_t dump_error_log(struct device *d,
8773 struct device_attribute *attr,
8774 const char *buf, size_t count)
8775{
8776 char *p = (char *)buf;
8777
8778 if (p[0] == '1')
8779 iwl_dump_nic_error_log((struct iwl_priv *)d->driver_data);
8780
8781 return strnlen(buf, count);
8782}
8783
8784static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
8785
8786static ssize_t dump_event_log(struct device *d,
8787 struct device_attribute *attr,
8788 const char *buf, size_t count)
8789{
8790 char *p = (char *)buf;
8791
8792 if (p[0] == '1')
8793 iwl_dump_nic_event_log((struct iwl_priv *)d->driver_data);
8794
8795 return strnlen(buf, count);
8796}
8797
8798static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
8799
8800/*****************************************************************************
8801 *
8802 * driver setup and teardown
8803 *
8804 *****************************************************************************/
8805
8806static void iwl_setup_deferred_work(struct iwl_priv *priv)
8807{
8808 priv->workqueue = create_workqueue(DRV_NAME);
8809
8810 init_waitqueue_head(&priv->wait_command_queue);
8811
8812 INIT_WORK(&priv->up, iwl_bg_up);
8813 INIT_WORK(&priv->restart, iwl_bg_restart);
8814 INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
8815 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
8816 INIT_WORK(&priv->request_scan, iwl_bg_request_scan);
8817 INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
8818 INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
8819 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
8820 INIT_DELAYED_WORK(&priv->post_associate, iwl_bg_post_associate);
8821 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
8822 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
8823 INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
8824
8825 iwl_hw_setup_deferred_work(priv);
8826
8827 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
8828 iwl_irq_tasklet, (unsigned long)priv);
8829}
8830
8831static void iwl_cancel_deferred_work(struct iwl_priv *priv)
8832{
8833 iwl_hw_cancel_deferred_work(priv);
8834
8835 cancel_delayed_work(&priv->scan_check);
8836 cancel_delayed_work(&priv->alive_start);
8837 cancel_delayed_work(&priv->post_associate);
8838 cancel_work_sync(&priv->beacon_update);
8839}
8840
8841static struct attribute *iwl_sysfs_entries[] = {
8842 &dev_attr_antenna.attr,
8843 &dev_attr_channels.attr,
8844 &dev_attr_dump_errors.attr,
8845 &dev_attr_dump_events.attr,
8846 &dev_attr_flags.attr,
8847 &dev_attr_filter_flags.attr,
8848#ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
8849 &dev_attr_measurement.attr,
8850#endif
8851 &dev_attr_power_level.attr,
8852 &dev_attr_retry_rate.attr,
8853 &dev_attr_rf_kill.attr,
8854 &dev_attr_rs_window.attr,
8855 &dev_attr_statistics.attr,
8856 &dev_attr_status.attr,
8857 &dev_attr_temperature.attr,
8858 &dev_attr_tune.attr,
8859 &dev_attr_tx_power.attr,
8860
8861 NULL
8862};
8863
8864static struct attribute_group iwl_attribute_group = {
8865 .name = NULL, /* put in device directory */
8866 .attrs = iwl_sysfs_entries,
8867};
8868
8869static struct ieee80211_ops iwl_hw_ops = {
8870 .tx = iwl_mac_tx,
4150c572 8871 .start = iwl_mac_start,
b481de9c
ZY		 8872 .stop = iwl_mac_stop,
8873 .add_interface = iwl_mac_add_interface,
8874 .remove_interface = iwl_mac_remove_interface,
8875 .config = iwl_mac_config,
8876 .config_interface = iwl_mac_config_interface,
4150c572 8877 .configure_filter = iwl_configure_filter,
b481de9c
ZY		 8878 .set_key = iwl_mac_set_key,
8879 .get_stats = iwl_mac_get_stats,
8880 .get_tx_stats = iwl_mac_get_tx_stats,
8881 .conf_tx = iwl_mac_conf_tx,
8882 .get_tsf = iwl_mac_get_tsf,
8883 .reset_tsf = iwl_mac_reset_tsf,
8884 .beacon_update = iwl_mac_beacon_update,
8885#ifdef CONFIG_IWLWIFI_HT
8886 .conf_ht = iwl_mac_conf_ht,
8887 .get_ht_capab = iwl_mac_get_ht_capab,
8888#ifdef CONFIG_IWLWIFI_HT_AGG
8889 .ht_tx_agg_start = iwl_mac_ht_tx_agg_start,
8890 .ht_tx_agg_stop = iwl_mac_ht_tx_agg_stop,
8891 .ht_rx_agg_start = iwl_mac_ht_rx_agg_start,
8892 .ht_rx_agg_stop = iwl_mac_ht_rx_agg_stop,
8893#endif /* CONFIG_IWLWIFI_HT_AGG */
8894#endif /* CONFIG_IWLWIFI_HT */
8895 .hw_scan = iwl_mac_hw_scan
8896};
8897
8898static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
8899{
8900 int err = 0;
8901 struct iwl_priv *priv;
8902 struct ieee80211_hw *hw;
8903 int i;
8904
8905 if (iwl_param_disable_hw_scan) {
8906 IWL_DEBUG_INFO("Disabling hw_scan\n");
8907 iwl_hw_ops.hw_scan = NULL;
8908 }
8909
8910 if ((iwl_param_queues_num > IWL_MAX_NUM_QUEUES) ||
8911 (iwl_param_queues_num < IWL_MIN_NUM_QUEUES)) {
8912 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
8913 IWL_MIN_NUM_QUEUES, IWL_MAX_NUM_QUEUES);
8914 err = -EINVAL;
8915 goto out;
8916 }
8917
8918 /* mac80211 allocates memory for this device instance, including
8919 * space for this driver's private structure */
8920 hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwl_hw_ops);
8921 if (hw == NULL) {
8922 IWL_ERROR("Can not allocate network device\n");
8923 err = -ENOMEM;
8924 goto out;
8925 }
8926 SET_IEEE80211_DEV(hw, &pdev->dev);
8927
8928 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
8929 priv = hw->priv;
8930 priv->hw = hw;
8931
8932 priv->pci_dev = pdev;
8933 priv->antenna = (enum iwl_antenna)iwl_param_antenna;
8934#ifdef CONFIG_IWLWIFI_DEBUG
8935 iwl_debug_level = iwl_param_debug;
8936 atomic_set(&priv->restrict_refcnt, 0);
8937#endif
8938 priv->retry_rate = 1;
8939
8940 priv->ibss_beacon = NULL;
8941
8942 /* Tell mac80211 and its clients (e.g. Wireless Extensions)
8943 * the range of signal quality values that we'll provide.
8944 * Negative values for level/noise indicate that we'll provide dBm.
8945 * For WE, at least, non-0 values here *enable* display of values
8946 * in app (iwconfig). */
8947 hw->max_rssi = -20; /* signal level, negative indicates dBm */
8948 hw->max_noise = -20; /* noise level, negative indicates dBm */
8949 hw->max_signal = 100; /* link quality indication (%) */
8950
8951 /* Tell mac80211 our Tx characteristics */
8952 hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE;
8953
8954 hw->queues = 4;
8955#ifdef CONFIG_IWLWIFI_HT
8956#ifdef CONFIG_IWLWIFI_HT_AGG
8957 hw->queues = 16;
8958#endif /* CONFIG_IWLWIFI_HT_AGG */
8959#endif /* CONFIG_IWLWIFI_HT */
8960
8961 spin_lock_init(&priv->lock);
8962 spin_lock_init(&priv->power_data.lock);
8963 spin_lock_init(&priv->sta_lock);
8964 spin_lock_init(&priv->hcmd_lock);
8965 spin_lock_init(&priv->lq_mngr.lock);
8966
8967 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++)
8968 INIT_LIST_HEAD(&priv->ibss_mac_hash[i]);
8969
8970 INIT_LIST_HEAD(&priv->free_frames);
8971
8972 mutex_init(&priv->mutex);
8973 if (pci_enable_device(pdev)) {
8974 err = -ENODEV;
8975 goto out_ieee80211_free_hw;
8976 }
8977
8978 pci_set_master(pdev);
8979
8980 iwl_clear_stations_table(priv);
8981
8982 priv->data_retry_limit = -1;
8983 priv->ieee_channels = NULL;
8984 priv->ieee_rates = NULL;
8985 priv->phymode = -1;
8986
8987 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
8988 if (!err)
8989 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
8990 if (err) {
8991 printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n");
8992 goto out_pci_disable_device;
8993 }
8994
8995 pci_set_drvdata(pdev, priv);
8996 err = pci_request_regions(pdev, DRV_NAME);
8997 if (err)
8998 goto out_pci_disable_device;
8999 /* We disable the RETRY_TIMEOUT register (0x41) to keep
9000 * PCI Tx retries from interfering with C3 CPU state */
9001 pci_write_config_byte(pdev, 0x41, 0x00);
9002 priv->hw_base = pci_iomap(pdev, 0, 0);
9003 if (!priv->hw_base) {
9004 err = -ENODEV;
9005 goto out_pci_release_regions;
9006 }
9007
9008 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
9009 (unsigned long long) pci_resource_len(pdev, 0));
9010 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
9011
9012 /* Initialize module parameter values here */
9013
9014 if (iwl_param_disable) {
9015 set_bit(STATUS_RF_KILL_SW, &priv->status);
9016 IWL_DEBUG_INFO("Radio disabled.\n");
9017 }
9018
9019 priv->iw_mode = IEEE80211_IF_TYPE_STA;
9020
9021 priv->ps_mode = 0;
9022 priv->use_ant_b_for_management_frame = 1; /* start with ant B */
9023 priv->is_ht_enabled = 1;
9024 priv->channel_width = IWL_CHANNEL_WIDTH_40MHZ;
9025 priv->valid_antenna = 0x7; /* assume all 3 connected */
9026 priv->ps_mode = IWL_MIMO_PS_NONE;
9027 priv->cck_power_index_compensation = iwl_read32(
9028 priv, CSR_HW_REV_WA_REG);
9029
9030 iwl4965_set_rxon_chain(priv);
9031
9032 printk(KERN_INFO DRV_NAME
9033 ": Detected Intel Wireless WiFi Link 4965AGN\n");
9034
9035 /* Device-specific setup */
9036 if (iwl_hw_set_hw_setting(priv)) {
9037 IWL_ERROR("failed to set hw settings\n");
9038 mutex_unlock(&priv->mutex);
9039 goto out_iounmap;
9040 }
9041
9042#ifdef CONFIG_IWLWIFI_QOS
9043 if (iwl_param_qos_enable)
9044 priv->qos_data.qos_enable = 1;
9045
9046 iwl_reset_qos(priv);
9047
9048 priv->qos_data.qos_active = 0;
9049 priv->qos_data.qos_cap.val = 0;
9050#endif /* CONFIG_IWLWIFI_QOS */
9051
9052 iwl_set_rxon_channel(priv, MODE_IEEE80211G, 6);
9053 iwl_setup_deferred_work(priv);
9054 iwl_setup_rx_handlers(priv);
9055
9056 priv->rates_mask = IWL_RATES_MASK;
9057 /* If power management is turned on, default to AC mode */
9058 priv->power_mode = IWL_POWER_AC;
9059 priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
9060
9061 pci_enable_msi(pdev);
9062
9063 err = request_irq(pdev->irq, iwl_isr, IRQF_SHARED, DRV_NAME, priv);
9064 if (err) {
9065 IWL_ERROR("Error allocating IRQ %d\n", pdev->irq);
9066 goto out_disable_msi;
9067 }
9068
9069 mutex_lock(&priv->mutex);
9070
9071 err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
9072 if (err) {
9073 IWL_ERROR("failed to create sysfs device attributes\n");
9074 mutex_unlock(&priv->mutex);
9075 goto out_release_irq;
9076 }
9077
9078 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
9079 * ucode filename and max sizes are card-specific. */
9080 err = iwl_read_ucode(priv);
9081 if (err) {
9082 IWL_ERROR("Could not read microcode: %d\n", err);
9083 mutex_unlock(&priv->mutex);
9084 goto out_pci_alloc;
9085 }
9086
9087 mutex_unlock(&priv->mutex);
9088
9089 IWL_DEBUG_INFO("Queing UP work.\n");
9090
9091 queue_work(priv->workqueue, &priv->up);
9092
9093 return 0;
9094
9095 out_pci_alloc:
9096 iwl_dealloc_ucode_pci(priv);
9097
9098 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
9099
9100 out_release_irq:
9101 free_irq(pdev->irq, priv);
9102
9103 out_disable_msi:
9104 pci_disable_msi(pdev);
9105 destroy_workqueue(priv->workqueue);
9106 priv->workqueue = NULL;
9107 iwl_unset_hw_setting(priv);
9108
9109 out_iounmap:
9110 pci_iounmap(pdev, priv->hw_base);
9111 out_pci_release_regions:
9112 pci_release_regions(pdev);
9113 out_pci_disable_device:
9114 pci_disable_device(pdev);
9115 pci_set_drvdata(pdev, NULL);
9116 out_ieee80211_free_hw:
9117 ieee80211_free_hw(priv->hw);
9118 out:
9119 return err;
9120}
9121
9122static void iwl_pci_remove(struct pci_dev *pdev)
9123{
9124 struct iwl_priv *priv = pci_get_drvdata(pdev);
9125 struct list_head *p, *q;
9126 int i;
9127
9128 if (!priv)
9129 return;
9130
9131 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
9132
9133 mutex_lock(&priv->mutex);
9134 set_bit(STATUS_EXIT_PENDING, &priv->status);
9135 __iwl_down(priv);
9136 mutex_unlock(&priv->mutex);
9137
9138 /* Free MAC hash list for ADHOC */
9139 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
9140 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
9141 list_del(p);
9142 kfree(list_entry(p, struct iwl_ibss_seq, list));
9143 }
9144 }
9145
9146 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
9147
9148 iwl_dealloc_ucode_pci(priv);
9149
9150 if (priv->rxq.bd)
9151 iwl_rx_queue_free(priv, &priv->rxq);
9152 iwl_hw_txq_ctx_free(priv);
9153
9154 iwl_unset_hw_setting(priv);
9155 iwl_clear_stations_table(priv);
9156
9157 if (priv->mac80211_registered) {
9158 ieee80211_unregister_hw(priv->hw);
9159 iwl_rate_control_unregister(priv->hw);
9160 }
9161
9162 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
9163 * priv->workqueue... so we can't take down the workqueue
9164 * until now... */
9165 destroy_workqueue(priv->workqueue);
9166 priv->workqueue = NULL;
9167
9168 free_irq(pdev->irq, priv);
9169 pci_disable_msi(pdev);
9170 pci_iounmap(pdev, priv->hw_base);
9171 pci_release_regions(pdev);
9172 pci_disable_device(pdev);
9173 pci_set_drvdata(pdev, NULL);
9174
9175 kfree(priv->channel_info);
9176
9177 kfree(priv->ieee_channels);
9178 kfree(priv->ieee_rates);
9179
9180 if (priv->ibss_beacon)
9181 dev_kfree_skb(priv->ibss_beacon);
9182
9183 ieee80211_free_hw(priv->hw);
9184}
9185
9186#ifdef CONFIG_PM
9187
9188static int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
9189{
9190 struct iwl_priv *priv = pci_get_drvdata(pdev);
9191
9192 mutex_lock(&priv->mutex);
9193
9194 set_bit(STATUS_IN_SUSPEND, &priv->status);
9195
9196 /* Take down the device; powers it off, etc. */
9197 __iwl_down(priv);
9198
9199 if (priv->mac80211_registered)
9200 ieee80211_stop_queues(priv->hw);
9201
9202 pci_save_state(pdev);
9203 pci_disable_device(pdev);
9204 pci_set_power_state(pdev, PCI_D3hot);
9205
9206 mutex_unlock(&priv->mutex);
9207
9208 return 0;
9209}
9210
9211static void iwl_resume(struct iwl_priv *priv)
9212{
9213 unsigned long flags;
9214
9215 /* The following it a temporary work around due to the
9216 * suspend / resume not fully initializing the NIC correctly.
9217 * Without all of the following, resume will not attempt to take
9218 * down the NIC (it shouldn't really need to) and will just try
9219 * and bring the NIC back up. However that fails during the
9220 * ucode verification process. This then causes iwl_down to be
9221 * called *after* iwl_hw_nic_init() has succeeded -- which
9222 * then lets the next init sequence succeed. So, we've
9223 * replicated all of that NIC init code here... */
9224
9225 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
9226
9227 iwl_hw_nic_init(priv);
9228
9229 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
9230 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
9231 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
9232 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
9233 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
9234 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
9235
9236 /* tell the device to stop sending interrupts */
9237 iwl_disable_interrupts(priv);
9238
9239 spin_lock_irqsave(&priv->lock, flags);
9240 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
9241
9242 if (!iwl_grab_restricted_access(priv)) {
9243 iwl_write_restricted_reg(priv, APMG_CLK_DIS_REG,
9244 APMG_CLK_VAL_DMA_CLK_RQT);
9245 iwl_release_restricted_access(priv);
9246 }
9247 spin_unlock_irqrestore(&priv->lock, flags);
9248
9249 udelay(5);
9250
9251 iwl_hw_nic_reset(priv);
9252
9253 /* Bring the device back up */
9254 clear_bit(STATUS_IN_SUSPEND, &priv->status);
9255 queue_work(priv->workqueue, &priv->up);
9256}
9257
9258static int iwl_pci_resume(struct pci_dev *pdev)
9259{
9260 struct iwl_priv *priv = pci_get_drvdata(pdev);
9261 int err;
9262
9263 printk(KERN_INFO "Coming out of suspend...\n");
9264
9265 mutex_lock(&priv->mutex);
9266
9267 pci_set_power_state(pdev, PCI_D0);
9268 err = pci_enable_device(pdev);
9269 pci_restore_state(pdev);
9270
9271 /*
9272 * Suspend/Resume resets the PCI configuration space, so we have to
9273 * re-disable the RETRY_TIMEOUT register (0x41) to keep PCI Tx retries
9274 * from interfering with C3 CPU state. pci_restore_state won't help
9275 * here since it only restores the first 64 bytes pci config header.
9276 */
9277 pci_write_config_byte(pdev, 0x41, 0x00);
9278
9279 iwl_resume(priv);
9280 mutex_unlock(&priv->mutex);
9281
9282 return 0;
9283}
9284
9285#endif /* CONFIG_PM */
9286
9287/*****************************************************************************
9288 *
9289 * driver and module entry point
9290 *
9291 *****************************************************************************/
9292
9293static struct pci_driver iwl_driver = {
9294 .name = DRV_NAME,
9295 .id_table = iwl_hw_card_ids,
9296 .probe = iwl_pci_probe,
9297 .remove = __devexit_p(iwl_pci_remove),
9298#ifdef CONFIG_PM
9299 .suspend = iwl_pci_suspend,
9300 .resume = iwl_pci_resume,
9301#endif
9302};
9303
9304static int __init iwl_init(void)
9305{
9306
9307 int ret;
9308 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
9309 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
9310 ret = pci_register_driver(&iwl_driver);
9311 if (ret) {
9312 IWL_ERROR("Unable to initialize PCI module\n");
9313 return ret;
9314 }
9315#ifdef CONFIG_IWLWIFI_DEBUG
9316 ret = driver_create_file(&iwl_driver.driver, &driver_attr_debug_level);
9317 if (ret) {
9318 IWL_ERROR("Unable to create driver sysfs file\n");
9319 pci_unregister_driver(&iwl_driver);
9320 return ret;
9321 }
9322#endif
9323
9324 return ret;
9325}
9326
9327static void __exit iwl_exit(void)
9328{
9329#ifdef CONFIG_IWLWIFI_DEBUG
9330 driver_remove_file(&iwl_driver.driver, &driver_attr_debug_level);
9331#endif
9332 pci_unregister_driver(&iwl_driver);
9333}
9334
9335module_param_named(antenna, iwl_param_antenna, int, 0444);
9336MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
9337module_param_named(disable, iwl_param_disable, int, 0444);
9338MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
9339module_param_named(hwcrypto, iwl_param_hwcrypto, int, 0444);
9340MODULE_PARM_DESC(hwcrypto,
9341 "using hardware crypto engine (default 0 [software])\n");
9342module_param_named(debug, iwl_param_debug, int, 0444);
9343MODULE_PARM_DESC(debug, "debug output mask");
9344module_param_named(disable_hw_scan, iwl_param_disable_hw_scan, int, 0444);
9345MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
9346
9347module_param_named(queues_num, iwl_param_queues_num, int, 0444);
9348MODULE_PARM_DESC(queues_num, "number of hw queues.");
9349
9350/* QoS */
9351module_param_named(qos_enable, iwl_param_qos_enable, int, 0444);
9352MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
9353
9354module_exit(iwl_exit);
9355module_init(iwl_init);
Clone of davem's net-next-2.6 tree