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[NET_SCHED]: explict hold dev tx lock
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl4965-base.c
CommitLineData
b481de9c
ZY		 1/******************************************************************************
2 *
3 * Copyright(c) 2003 - 2007 Intel Corporation. All rights reserved.
4 *
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
20 *
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
23 *
24 * Contact Information:
25 * James P. Ketrenos <ipw2100-admin@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
29
30/*
31 * NOTE: This file (iwl-base.c) is used to build to multiple hardware targets
32 * by defining IWL to either 3945 or 4965. The Makefile used when building
33 * the base targets will create base-3945.o and base-4965.o
34 *
35 * The eventual goal is to move as many of the #if IWL / #endif blocks out of
36 * this file and into the hardware specific implementation files (iwl-XXXX.c)
37 * and leave only the common (non #ifdef sprinkled) code in this file
38 */
39
40#include <linux/kernel.h>
41#include <linux/module.h>
42#include <linux/version.h>
43#include <linux/init.h>
44#include <linux/pci.h>
45#include <linux/dma-mapping.h>
46#include <linux/delay.h>
47#include <linux/skbuff.h>
48#include <linux/netdevice.h>
49#include <linux/wireless.h>
50#include <linux/firmware.h>
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
61#include "iwlwifi.h"
62#include "iwl-4965.h"
63#include "iwl-helpers.h"
64
65#ifdef CONFIG_IWLWIFI_DEBUG
66u32 iwl_debug_level;
67#endif
68
69/******************************************************************************
70 *
71 * module boiler plate
72 *
73 ******************************************************************************/
74
75/* module parameters */
76int iwl_param_disable_hw_scan;
77int iwl_param_debug;
78int iwl_param_disable; /* def: enable radio */
79int iwl_param_antenna; /* def: 0 = both antennas (use diversity) */
80int iwl_param_hwcrypto; /* def: using software encryption */
81int iwl_param_qos_enable = 1;
82int iwl_param_queues_num = IWL_MAX_NUM_QUEUES;
83
84/*
85 * module name, copyright, version, etc.
86 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
87 */
88
89#define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
90
91#ifdef CONFIG_IWLWIFI_DEBUG
92#define VD "d"
93#else
94#define VD
95#endif
96
97#ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
98#define VS "s"
99#else
100#define VS
101#endif
102
103#define IWLWIFI_VERSION "0.1.15k" VD VS
104#define DRV_COPYRIGHT "Copyright(c) 2003-2007 Intel Corporation"
105#define DRV_VERSION IWLWIFI_VERSION
106
107/* Change firmware file name, using "-" and incrementing number,
108 * *only* when uCode interface or architecture changes so that it
109 * is not compatible with earlier drivers.
110 * This number will also appear in << 8 position of 1st dword of uCode file */
111#define IWL4965_UCODE_API "-1"
112
113MODULE_DESCRIPTION(DRV_DESCRIPTION);
114MODULE_VERSION(DRV_VERSION);
115MODULE_AUTHOR(DRV_COPYRIGHT);
116MODULE_LICENSE("GPL");
117
118__le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
119{
120 u16 fc = le16_to_cpu(hdr->frame_control);
121 int hdr_len = ieee80211_get_hdrlen(fc);
122
123 if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
124 return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
125 return NULL;
126}
127
128static const struct ieee80211_hw_mode *iwl_get_hw_mode(
129 struct iwl_priv *priv, int mode)
130{
131 int i;
132
133 for (i = 0; i < 3; i++)
134 if (priv->modes[i].mode == mode)
135 return &priv->modes[i];
136
137 return NULL;
138}
139
140static int iwl_is_empty_essid(const char *essid, int essid_len)
141{
142 /* Single white space is for Linksys APs */
143 if (essid_len == 1 && essid[0] == ' ')
144 return 1;
145
146 /* Otherwise, if the entire essid is 0, we assume it is hidden */
147 while (essid_len) {
148 essid_len--;
149 if (essid[essid_len] != '\0')
150 return 0;
151 }
152
153 return 1;
154}
155
156static const char *iwl_escape_essid(const char *essid, u8 essid_len)
157{
158 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
159 const char *s = essid;
160 char *d = escaped;
161
162 if (iwl_is_empty_essid(essid, essid_len)) {
163 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
164 return escaped;
165 }
166
167 essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
168 while (essid_len--) {
169 if (*s == '\0') {
170 *d++ = '\\';
171 *d++ = '0';
172 s++;
173 } else
174 *d++ = *s++;
175 }
176 *d = '\0';
177 return escaped;
178}
179
180static void iwl_print_hex_dump(int level, void *p, u32 len)
181{
182#ifdef CONFIG_IWLWIFI_DEBUG
183 if (!(iwl_debug_level & level))
184 return;
185
186 print_hex_dump(KERN_DEBUG, "iwl data: ", DUMP_PREFIX_OFFSET, 16, 1,
187 p, len, 1);
188#endif
189}
190
191/*************** DMA-QUEUE-GENERAL-FUNCTIONS *****
192 * DMA services
193 *
194 * Theory of operation
195 *
196 * A queue is a circular buffers with 'Read' and 'Write' pointers.
197 * 2 empty entries always kept in the buffer to protect from overflow.
198 *
199 * For Tx queue, there are low mark and high mark limits. If, after queuing
200 * the packet for Tx, free space become < low mark, Tx queue stopped. When
201 * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
202 * Tx queue resumed.
203 *
204 * The IPW operates with six queues, one receive queue in the device's
205 * sram, one transmit queue for sending commands to the device firmware,
206 * and four transmit queues for data.
207 ***************************************************/
208
209static int iwl_queue_space(const struct iwl_queue *q)
210{
211 int s = q->last_used - q->first_empty;
212
213 if (q->last_used > q->first_empty)
214 s -= q->n_bd;
215
216 if (s <= 0)
217 s += q->n_window;
218 /* keep some reserve to not confuse empty and full situations */
219 s -= 2;
220 if (s < 0)
221 s = 0;
222 return s;
223}
224
225/* XXX: n_bd must be power-of-two size */
226static inline int iwl_queue_inc_wrap(int index, int n_bd)
227{
228 return ++index & (n_bd - 1);
229}
230
231/* XXX: n_bd must be power-of-two size */
232static inline int iwl_queue_dec_wrap(int index, int n_bd)
233{
234 return --index & (n_bd - 1);
235}
236
237static inline int x2_queue_used(const struct iwl_queue *q, int i)
238{
239 return q->first_empty > q->last_used ?
240 (i >= q->last_used && i < q->first_empty) :
241 !(i < q->last_used && i >= q->first_empty);
242}
243
244static inline u8 get_cmd_index(struct iwl_queue *q, u32 index, int is_huge)
245{
246 if (is_huge)
247 return q->n_window;
248
249 return index & (q->n_window - 1);
250}
251
252static int iwl_queue_init(struct iwl_priv *priv, struct iwl_queue *q,
253 int count, int slots_num, u32 id)
254{
255 q->n_bd = count;
256 q->n_window = slots_num;
257 q->id = id;
258
259 /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
260 * and iwl_queue_dec_wrap are broken. */
261 BUG_ON(!is_power_of_2(count));
262
263 /* slots_num must be power-of-two size, otherwise
264 * get_cmd_index is broken. */
265 BUG_ON(!is_power_of_2(slots_num));
266
267 q->low_mark = q->n_window / 4;
268 if (q->low_mark < 4)
269 q->low_mark = 4;
270
271 q->high_mark = q->n_window / 8;
272 if (q->high_mark < 2)
273 q->high_mark = 2;
274
275 q->first_empty = q->last_used = 0;
276
277 return 0;
278}
279
280static int iwl_tx_queue_alloc(struct iwl_priv *priv,
281 struct iwl_tx_queue *txq, u32 id)
282{
283 struct pci_dev *dev = priv->pci_dev;
284
285 if (id != IWL_CMD_QUEUE_NUM) {
286 txq->txb = kmalloc(sizeof(txq->txb[0]) *
287 TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
288 if (!txq->txb) {
289 IWL_ERROR("kmalloc for auxilary BD "
290 "structures failed\n");
291 goto error;
292 }
293 } else
294 txq->txb = NULL;
295
296 txq->bd = pci_alloc_consistent(dev,
297 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
298 &txq->q.dma_addr);
299
300 if (!txq->bd) {
301 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
302 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
303 goto error;
304 }
305 txq->q.id = id;
306
307 return 0;
308
309 error:
310 if (txq->txb) {
311 kfree(txq->txb);
312 txq->txb = NULL;
313 }
314
315 return -ENOMEM;
316}
317
318int iwl_tx_queue_init(struct iwl_priv *priv,
319 struct iwl_tx_queue *txq, int slots_num, u32 txq_id)
320{
321 struct pci_dev *dev = priv->pci_dev;
322 int len;
323 int rc = 0;
324
325 /* alocate command space + one big command for scan since scan
326 * command is very huge the system will not have two scan at the
327 * same time */
328 len = sizeof(struct iwl_cmd) * slots_num;
329 if (txq_id == IWL_CMD_QUEUE_NUM)
330 len += IWL_MAX_SCAN_SIZE;
331 txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
332 if (!txq->cmd)
333 return -ENOMEM;
334
335 rc = iwl_tx_queue_alloc(priv, txq, txq_id);
336 if (rc) {
337 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
338
339 return -ENOMEM;
340 }
341 txq->need_update = 0;
342
343 /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
344 * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
345 BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
346 iwl_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
347
348 iwl_hw_tx_queue_init(priv, txq);
349
350 return 0;
351}
352
353/**
354 * iwl_tx_queue_free - Deallocate DMA queue.
355 * @txq: Transmit queue to deallocate.
356 *
357 * Empty queue by removing and destroying all BD's.
358 * Free all buffers. txq itself is not freed.
359 *
360 */
361void iwl_tx_queue_free(struct iwl_priv *priv, struct iwl_tx_queue *txq)
362{
363 struct iwl_queue *q = &txq->q;
364 struct pci_dev *dev = priv->pci_dev;
365 int len;
366
367 if (q->n_bd == 0)
368 return;
369
370 /* first, empty all BD's */
371 for (; q->first_empty != q->last_used;
372 q->last_used = iwl_queue_inc_wrap(q->last_used, q->n_bd))
373 iwl_hw_txq_free_tfd(priv, txq);
374
375 len = sizeof(struct iwl_cmd) * q->n_window;
376 if (q->id == IWL_CMD_QUEUE_NUM)
377 len += IWL_MAX_SCAN_SIZE;
378
379 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
380
381 /* free buffers belonging to queue itself */
382 if (txq->q.n_bd)
383 pci_free_consistent(dev, sizeof(struct iwl_tfd_frame) *
384 txq->q.n_bd, txq->bd, txq->q.dma_addr);
385
386 if (txq->txb) {
387 kfree(txq->txb);
388 txq->txb = NULL;
389 }
390
391 /* 0 fill whole structure */
392 memset(txq, 0, sizeof(*txq));
393}
394
395const u8 BROADCAST_ADDR[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
396
397/*************** STATION TABLE MANAGEMENT ****
398 *
399 * NOTE: This needs to be overhauled to better synchronize between
400 * how the iwl-4965.c is using iwl_hw_find_station vs. iwl-3945.c
401 *
402 * mac80211 should also be examined to determine if sta_info is duplicating
403 * the functionality provided here
404 */
405
406/**************************************************************/
407
408static u8 iwl_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
409{
410 int index = IWL_INVALID_STATION;
411 int i;
412 unsigned long flags;
413
414 spin_lock_irqsave(&priv->sta_lock, flags);
415
416 if (is_ap)
417 index = IWL_AP_ID;
418 else if (is_broadcast_ether_addr(addr))
419 index = priv->hw_setting.bcast_sta_id;
420 else
421 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
422 if (priv->stations[i].used &&
423 !compare_ether_addr(priv->stations[i].sta.sta.addr,
424 addr)) {
425 index = i;
426 break;
427 }
428
429 if (unlikely(index == IWL_INVALID_STATION))
430 goto out;
431
432 if (priv->stations[index].used) {
433 priv->stations[index].used = 0;
434 priv->num_stations--;
435 }
436
437 BUG_ON(priv->num_stations < 0);
438
439out:
440 spin_unlock_irqrestore(&priv->sta_lock, flags);
441 return 0;
442}
443
444static void iwl_clear_stations_table(struct iwl_priv *priv)
445{
446 unsigned long flags;
447
448 spin_lock_irqsave(&priv->sta_lock, flags);
449
450 priv->num_stations = 0;
451 memset(priv->stations, 0, sizeof(priv->stations));
452
453 spin_unlock_irqrestore(&priv->sta_lock, flags);
454}
455
456u8 iwl_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap, u8 flags)
457{
458 int i;
459 int index = IWL_INVALID_STATION;
460 struct iwl_station_entry *station;
461 unsigned long flags_spin;
0795af57 462 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 463
464 spin_lock_irqsave(&priv->sta_lock, flags_spin);
465 if (is_ap)
466 index = IWL_AP_ID;
467 else if (is_broadcast_ether_addr(addr))
468 index = priv->hw_setting.bcast_sta_id;
469 else
470 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
471 if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
472 addr)) {
473 index = i;
474 break;
475 }
476
477 if (!priv->stations[i].used &&
478 index == IWL_INVALID_STATION)
479 index = i;
480 }
481
482
483 /* These twh conditions has the same outcome but keep them separate
484 since they have different meaning */
485 if (unlikely(index == IWL_INVALID_STATION)) {
486 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
487 return index;
488 }
489
490 if (priv->stations[index].used &&
491 !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
492 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
493 return index;
494 }
495
496
0795af57 497 IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
b481de9c
ZY		 498 station = &priv->stations[index];
499 station->used = 1;
500 priv->num_stations++;
501
502 memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd));
503 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
504 station->sta.mode = 0;
505 station->sta.sta.sta_id = index;
506 station->sta.station_flags = 0;
507
508#ifdef CONFIG_IWLWIFI_HT
509 /* BCAST station and IBSS stations do not work in HT mode */
510 if (index != priv->hw_setting.bcast_sta_id &&
511 priv->iw_mode != IEEE80211_IF_TYPE_IBSS)
512 iwl4965_set_ht_add_station(priv, index);
513#endif /*CONFIG_IWLWIFI_HT*/
514
515 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
516 iwl_send_add_station(priv, &station->sta, flags);
517 return index;
518
519}
520
521/*************** DRIVER STATUS FUNCTIONS *****/
522
523static inline int iwl_is_ready(struct iwl_priv *priv)
524{
525 /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
526 * set but EXIT_PENDING is not */
527 return test_bit(STATUS_READY, &priv->status) &&
528 test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
529 !test_bit(STATUS_EXIT_PENDING, &priv->status);
530}
531
532static inline int iwl_is_alive(struct iwl_priv *priv)
533{
534 return test_bit(STATUS_ALIVE, &priv->status);
535}
536
537static inline int iwl_is_init(struct iwl_priv *priv)
538{
539 return test_bit(STATUS_INIT, &priv->status);
540}
541
542static inline int iwl_is_rfkill(struct iwl_priv *priv)
543{
544 return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
545 test_bit(STATUS_RF_KILL_SW, &priv->status);
546}
547
548static inline int iwl_is_ready_rf(struct iwl_priv *priv)
549{
550
551 if (iwl_is_rfkill(priv))
552 return 0;
553
554 return iwl_is_ready(priv);
555}
556
557/*************** HOST COMMAND QUEUE FUNCTIONS *****/
558
559#define IWL_CMD(x) case x : return #x
560
561static const char *get_cmd_string(u8 cmd)
562{
563 switch (cmd) {
564 IWL_CMD(REPLY_ALIVE);
565 IWL_CMD(REPLY_ERROR);
566 IWL_CMD(REPLY_RXON);
567 IWL_CMD(REPLY_RXON_ASSOC);
568 IWL_CMD(REPLY_QOS_PARAM);
569 IWL_CMD(REPLY_RXON_TIMING);
570 IWL_CMD(REPLY_ADD_STA);
571 IWL_CMD(REPLY_REMOVE_STA);
572 IWL_CMD(REPLY_REMOVE_ALL_STA);
573 IWL_CMD(REPLY_TX);
574 IWL_CMD(REPLY_RATE_SCALE);
575 IWL_CMD(REPLY_LEDS_CMD);
576 IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
577 IWL_CMD(RADAR_NOTIFICATION);
578 IWL_CMD(REPLY_QUIET_CMD);
579 IWL_CMD(REPLY_CHANNEL_SWITCH);
580 IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
581 IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
582 IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
583 IWL_CMD(POWER_TABLE_CMD);
584 IWL_CMD(PM_SLEEP_NOTIFICATION);
585 IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
586 IWL_CMD(REPLY_SCAN_CMD);
587 IWL_CMD(REPLY_SCAN_ABORT_CMD);
588 IWL_CMD(SCAN_START_NOTIFICATION);
589 IWL_CMD(SCAN_RESULTS_NOTIFICATION);
590 IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
591 IWL_CMD(BEACON_NOTIFICATION);
592 IWL_CMD(REPLY_TX_BEACON);
593 IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
594 IWL_CMD(QUIET_NOTIFICATION);
595 IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
596 IWL_CMD(MEASURE_ABORT_NOTIFICATION);
597 IWL_CMD(REPLY_BT_CONFIG);
598 IWL_CMD(REPLY_STATISTICS_CMD);
599 IWL_CMD(STATISTICS_NOTIFICATION);
600 IWL_CMD(REPLY_CARD_STATE_CMD);
601 IWL_CMD(CARD_STATE_NOTIFICATION);
602 IWL_CMD(MISSED_BEACONS_NOTIFICATION);
603 IWL_CMD(REPLY_CT_KILL_CONFIG_CMD);
604 IWL_CMD(SENSITIVITY_CMD);
605 IWL_CMD(REPLY_PHY_CALIBRATION_CMD);
606 IWL_CMD(REPLY_RX_PHY_CMD);
607 IWL_CMD(REPLY_RX_MPDU_CMD);
608 IWL_CMD(REPLY_4965_RX);
609 IWL_CMD(REPLY_COMPRESSED_BA);
610 default:
611 return "UNKNOWN";
612
613 }
614}
615
616#define HOST_COMPLETE_TIMEOUT (HZ / 2)
617
618/**
619 * iwl_enqueue_hcmd - enqueue a uCode command
620 * @priv: device private data point
621 * @cmd: a point to the ucode command structure
622 *
623 * The function returns < 0 values to indicate the operation is
624 * failed. On success, it turns the index (> 0) of command in the
625 * command queue.
626 */
627static int iwl_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
628{
629 struct iwl_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
630 struct iwl_queue *q = &txq->q;
631 struct iwl_tfd_frame *tfd;
632 u32 *control_flags;
633 struct iwl_cmd *out_cmd;
634 u32 idx;
635 u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
636 dma_addr_t phys_addr;
637 int ret;
638 unsigned long flags;
639
640 /* If any of the command structures end up being larger than
641 * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
642 * we will need to increase the size of the TFD entries */
643 BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
644 !(cmd->meta.flags & CMD_SIZE_HUGE));
645
646 if (iwl_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
647 IWL_ERROR("No space for Tx\n");
648 return -ENOSPC;
649 }
650
651 spin_lock_irqsave(&priv->hcmd_lock, flags);
652
653 tfd = &txq->bd[q->first_empty];
654 memset(tfd, 0, sizeof(*tfd));
655
656 control_flags = (u32 *) tfd;
657
658 idx = get_cmd_index(q, q->first_empty, cmd->meta.flags & CMD_SIZE_HUGE);
659 out_cmd = &txq->cmd[idx];
660
661 out_cmd->hdr.cmd = cmd->id;
662 memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
663 memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
664
665 /* At this point, the out_cmd now has all of the incoming cmd
666 * information */
667
668 out_cmd->hdr.flags = 0;
669 out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
670 INDEX_TO_SEQ(q->first_empty));
671 if (out_cmd->meta.flags & CMD_SIZE_HUGE)
672 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
673
674 phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
675 offsetof(struct iwl_cmd, hdr);
676 iwl_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
677
678 IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
679 "%d bytes at %d[%d]:%d\n",
680 get_cmd_string(out_cmd->hdr.cmd),
681 out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
682 fix_size, q->first_empty, idx, IWL_CMD_QUEUE_NUM);
683
684 txq->need_update = 1;
685 ret = iwl4965_tx_queue_update_wr_ptr(priv, txq, 0);
686 q->first_empty = iwl_queue_inc_wrap(q->first_empty, q->n_bd);
687 iwl_tx_queue_update_write_ptr(priv, txq);
688
689 spin_unlock_irqrestore(&priv->hcmd_lock, flags);
690 return ret ? ret : idx;
691}
692
693int iwl_send_cmd_async(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
694{
695 int ret;
696
697 BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
698
699 /* An asynchronous command can not expect an SKB to be set. */
700 BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
701
702 /* An asynchronous command MUST have a callback. */
703 BUG_ON(!cmd->meta.u.callback);
704
705 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
706 return -EBUSY;
707
708 ret = iwl_enqueue_hcmd(priv, cmd);
709 if (ret < 0) {
710 IWL_ERROR("Error sending %s: iwl_enqueue_hcmd failed: %d\n",
711 get_cmd_string(cmd->id), ret);
712 return ret;
713 }
714 return 0;
715}
716
717int iwl_send_cmd_sync(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
718{
719 int cmd_idx;
720 int ret;
721 static atomic_t entry = ATOMIC_INIT(0); /* reentrance protection */
722
723 BUG_ON(cmd->meta.flags & CMD_ASYNC);
724
725 /* A synchronous command can not have a callback set. */
726 BUG_ON(cmd->meta.u.callback != NULL);
727
728 if (atomic_xchg(&entry, 1)) {
729 IWL_ERROR("Error sending %s: Already sending a host command\n",
730 get_cmd_string(cmd->id));
731 return -EBUSY;
732 }
733
734 set_bit(STATUS_HCMD_ACTIVE, &priv->status);
735
736 if (cmd->meta.flags & CMD_WANT_SKB)
737 cmd->meta.source = &cmd->meta;
738
739 cmd_idx = iwl_enqueue_hcmd(priv, cmd);
740 if (cmd_idx < 0) {
741 ret = cmd_idx;
742 IWL_ERROR("Error sending %s: iwl_enqueue_hcmd failed: %d\n",
743 get_cmd_string(cmd->id), ret);
744 goto out;
745 }
746
747 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
748 !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
749 HOST_COMPLETE_TIMEOUT);
750 if (!ret) {
751 if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
752 IWL_ERROR("Error sending %s: time out after %dms.\n",
753 get_cmd_string(cmd->id),
754 jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
755
756 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
757 ret = -ETIMEDOUT;
758 goto cancel;
759 }
760 }
761
762 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
763 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
764 get_cmd_string(cmd->id));
765 ret = -ECANCELED;
766 goto fail;
767 }
768 if (test_bit(STATUS_FW_ERROR, &priv->status)) {
769 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
770 get_cmd_string(cmd->id));
771 ret = -EIO;
772 goto fail;
773 }
774 if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
775 IWL_ERROR("Error: Response NULL in '%s'\n",
776 get_cmd_string(cmd->id));
777 ret = -EIO;
778 goto out;
779 }
780
781 ret = 0;
782 goto out;
783
784cancel:
785 if (cmd->meta.flags & CMD_WANT_SKB) {
786 struct iwl_cmd *qcmd;
787
788 /* Cancel the CMD_WANT_SKB flag for the cmd in the
789 * TX cmd queue. Otherwise in case the cmd comes
790 * in later, it will possibly set an invalid
791 * address (cmd->meta.source). */
792 qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
793 qcmd->meta.flags &= ~CMD_WANT_SKB;
794 }
795fail:
796 if (cmd->meta.u.skb) {
797 dev_kfree_skb_any(cmd->meta.u.skb);
798 cmd->meta.u.skb = NULL;
799 }
800out:
801 atomic_set(&entry, 0);
802 return ret;
803}
804
805int iwl_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
806{
807 /* A command can not be asynchronous AND expect an SKB to be set. */
808 BUG_ON((cmd->meta.flags & CMD_ASYNC) &&
809 (cmd->meta.flags & CMD_WANT_SKB));
810
811 if (cmd->meta.flags & CMD_ASYNC)
812 return iwl_send_cmd_async(priv, cmd);
813
814 return iwl_send_cmd_sync(priv, cmd);
815}
816
817int iwl_send_cmd_pdu(struct iwl_priv *priv, u8 id, u16 len, const void *data)
818{
819 struct iwl_host_cmd cmd = {
820 .id = id,
821 .len = len,
822 .data = data,
823 };
824
825 return iwl_send_cmd_sync(priv, &cmd);
826}
827
828static int __must_check iwl_send_cmd_u32(struct iwl_priv *priv, u8 id, u32 val)
829{
830 struct iwl_host_cmd cmd = {
831 .id = id,
832 .len = sizeof(val),
833 .data = &val,
834 };
835
836 return iwl_send_cmd_sync(priv, &cmd);
837}
838
839int iwl_send_statistics_request(struct iwl_priv *priv)
840{
841 return iwl_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
842}
843
844/**
845 * iwl_rxon_add_station - add station into station table.
846 *
847 * there is only one AP station with id= IWL_AP_ID
848 * NOTE: mutex must be held before calling the this fnction
849*/
850static int iwl_rxon_add_station(struct iwl_priv *priv,
851 const u8 *addr, int is_ap)
852{
853 u8 rc;
854
855 /* Remove this station if it happens to already exist */
856 iwl_remove_station(priv, addr, is_ap);
857
858 rc = iwl_add_station(priv, addr, is_ap, 0);
859
860 iwl4965_add_station(priv, addr, is_ap);
861
862 return rc;
863}
864
865/**
866 * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
867 * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
868 * @channel: Any channel valid for the requested phymode
869
870 * In addition to setting the staging RXON, priv->phymode is also set.
871 *
872 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
873 * in the staging RXON flag structure based on the phymode
874 */
875static int iwl_set_rxon_channel(struct iwl_priv *priv, u8 phymode, u16 channel)
876{
877 if (!iwl_get_channel_info(priv, phymode, channel)) {
878 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
879 channel, phymode);
880 return -EINVAL;
881 }
882
883 if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
884 (priv->phymode == phymode))
885 return 0;
886
887 priv->staging_rxon.channel = cpu_to_le16(channel);
888 if (phymode == MODE_IEEE80211A)
889 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
890 else
891 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
892
893 priv->phymode = phymode;
894
895 IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, phymode);
896
897 return 0;
898}
899
900/**
901 * iwl_check_rxon_cmd - validate RXON structure is valid
902 *
903 * NOTE: This is really only useful during development and can eventually
904 * be #ifdef'd out once the driver is stable and folks aren't actively
905 * making changes
906 */
907static int iwl_check_rxon_cmd(struct iwl_rxon_cmd *rxon)
908{
909 int error = 0;
910 int counter = 1;
911
912 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
913 error |= le32_to_cpu(rxon->flags &
914 (RXON_FLG_TGJ_NARROW_BAND_MSK |
915 RXON_FLG_RADAR_DETECT_MSK));
916 if (error)
917 IWL_WARNING("check 24G fields %d | %d\n",
918 counter++, error);
919 } else {
920 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
921 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
922 if (error)
923 IWL_WARNING("check 52 fields %d | %d\n",
924 counter++, error);
925 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
926 if (error)
927 IWL_WARNING("check 52 CCK %d | %d\n",
928 counter++, error);
929 }
930 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
931 if (error)
932 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
933
934 /* make sure basic rates 6Mbps and 1Mbps are supported */
935 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
936 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
937 if (error)
938 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
939
940 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
941 if (error)
942 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
943
944 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
945 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
946 if (error)
947 IWL_WARNING("check CCK and short slot %d | %d\n",
948 counter++, error);
949
950 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
951 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
952 if (error)
953 IWL_WARNING("check CCK & auto detect %d | %d\n",
954 counter++, error);
955
956 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
957 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
958 if (error)
959 IWL_WARNING("check TGG and auto detect %d | %d\n",
960 counter++, error);
961
962 if (error)
963 IWL_WARNING("Tuning to channel %d\n",
964 le16_to_cpu(rxon->channel));
965
966 if (error) {
967 IWL_ERROR("Not a valid iwl_rxon_assoc_cmd field values\n");
968 return -1;
969 }
970 return 0;
971}
972
973/**
974 * iwl_full_rxon_required - determine if RXON_ASSOC can be used in RXON commit
975 * @priv: staging_rxon is comapred to active_rxon
976 *
977 * If the RXON structure is changing sufficient to require a new
978 * tune or to clear and reset the RXON_FILTER_ASSOC_MSK then return 1
979 * to indicate a new tune is required.
980 */
981static int iwl_full_rxon_required(struct iwl_priv *priv)
982{
983
984 /* These items are only settable from the full RXON command */
985 if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
986 compare_ether_addr(priv->staging_rxon.bssid_addr,
987 priv->active_rxon.bssid_addr) ||
988 compare_ether_addr(priv->staging_rxon.node_addr,
989 priv->active_rxon.node_addr) ||
990 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
991 priv->active_rxon.wlap_bssid_addr) ||
992 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
993 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
994 (priv->staging_rxon.air_propagation !=
995 priv->active_rxon.air_propagation) ||
996 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
997 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
998 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
999 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
1000 (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
1001 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
1002 return 1;
1003
1004 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
1005 * be updated with the RXON_ASSOC command -- however only some
1006 * flag transitions are allowed using RXON_ASSOC */
1007
1008 /* Check if we are not switching bands */
1009 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
1010 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
1011 return 1;
1012
1013 /* Check if we are switching association toggle */
1014 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
1015 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
1016 return 1;
1017
1018 return 0;
1019}
1020
1021static int iwl_send_rxon_assoc(struct iwl_priv *priv)
1022{
1023 int rc = 0;
1024 struct iwl_rx_packet *res = NULL;
1025 struct iwl_rxon_assoc_cmd rxon_assoc;
1026 struct iwl_host_cmd cmd = {
1027 .id = REPLY_RXON_ASSOC,
1028 .len = sizeof(rxon_assoc),
1029 .meta.flags = CMD_WANT_SKB,
1030 .data = &rxon_assoc,
1031 };
1032 const struct iwl_rxon_cmd *rxon1 = &priv->staging_rxon;
1033 const struct iwl_rxon_cmd *rxon2 = &priv->active_rxon;
1034
1035 if ((rxon1->flags == rxon2->flags) &&
1036 (rxon1->filter_flags == rxon2->filter_flags) &&
1037 (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1038 (rxon1->ofdm_ht_single_stream_basic_rates ==
1039 rxon2->ofdm_ht_single_stream_basic_rates) &&
1040 (rxon1->ofdm_ht_dual_stream_basic_rates ==
1041 rxon2->ofdm_ht_dual_stream_basic_rates) &&
1042 (rxon1->rx_chain == rxon2->rx_chain) &&
1043 (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1044 IWL_DEBUG_INFO("Using current RXON_ASSOC. Not resending.\n");
1045 return 0;
1046 }
1047
1048 rxon_assoc.flags = priv->staging_rxon.flags;
1049 rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1050 rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1051 rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1052 rxon_assoc.reserved = 0;
1053 rxon_assoc.ofdm_ht_single_stream_basic_rates =
1054 priv->staging_rxon.ofdm_ht_single_stream_basic_rates;
1055 rxon_assoc.ofdm_ht_dual_stream_basic_rates =
1056 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates;
1057 rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain;
1058
1059 rc = iwl_send_cmd_sync(priv, &cmd);
1060 if (rc)
1061 return rc;
1062
1063 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1064 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1065 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1066 rc = -EIO;
1067 }
1068
1069 priv->alloc_rxb_skb--;
1070 dev_kfree_skb_any(cmd.meta.u.skb);
1071
1072 return rc;
1073}
1074
1075/**
1076 * iwl_commit_rxon - commit staging_rxon to hardware
1077 *
1078 * The RXON command in staging_rxon is commited to the hardware and
1079 * the active_rxon structure is updated with the new data. This
1080 * function correctly transitions out of the RXON_ASSOC_MSK state if
1081 * a HW tune is required based on the RXON structure changes.
1082 */
1083static int iwl_commit_rxon(struct iwl_priv *priv)
1084{
1085 /* cast away the const for active_rxon in this function */
1086 struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
0795af57 1087 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 1088 int rc = 0;
1089
1090 if (!iwl_is_alive(priv))
1091 return -1;
1092
1093 /* always get timestamp with Rx frame */
1094 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
1095
1096 rc = iwl_check_rxon_cmd(&priv->staging_rxon);
1097 if (rc) {
1098 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
1099 return -EINVAL;
1100 }
1101
1102 /* If we don't need to send a full RXON, we can use
1103 * iwl_rxon_assoc_cmd which is used to reconfigure filter
1104 * and other flags for the current radio configuration. */
1105 if (!iwl_full_rxon_required(priv)) {
1106 rc = iwl_send_rxon_assoc(priv);
1107 if (rc) {
1108 IWL_ERROR("Error setting RXON_ASSOC "
1109 "configuration (%d).\n", rc);
1110 return rc;
1111 }
1112
1113 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1114
1115 return 0;
1116 }
1117
1118 /* station table will be cleared */
1119 priv->assoc_station_added = 0;
1120
1121#ifdef CONFIG_IWLWIFI_SENSITIVITY
1122 priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1123 if (!priv->error_recovering)
1124 priv->start_calib = 0;
1125
1126 iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1127#endif /* CONFIG_IWLWIFI_SENSITIVITY */
1128
1129 /* If we are currently associated and the new config requires
1130 * an RXON_ASSOC and the new config wants the associated mask enabled,
1131 * we must clear the associated from the active configuration
1132 * before we apply the new config */
1133 if (iwl_is_associated(priv) &&
1134 (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
1135 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1136 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1137
1138 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
1139 sizeof(struct iwl_rxon_cmd),
1140 &priv->active_rxon);
1141
1142 /* If the mask clearing failed then we set
1143 * active_rxon back to what it was previously */
1144 if (rc) {
1145 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1146 IWL_ERROR("Error clearing ASSOC_MSK on current "
1147 "configuration (%d).\n", rc);
1148 return rc;
1149 }
1150
1151 /* The RXON bit toggling will have cleared out the
1152 * station table in the uCode, so blank it in the driver
1153 * as well */
1154 iwl_clear_stations_table(priv);
1155 } else if (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) {
1156 /* When switching from non-associated to associated, the
1157 * uCode clears out the station table; so clear it in the
1158 * driver as well */
1159 iwl_clear_stations_table(priv);
1160 }
1161
1162 IWL_DEBUG_INFO("Sending RXON\n"
1163 "* with%s RXON_FILTER_ASSOC_MSK\n"
1164 "* channel = %d\n"
0795af57 1165 "* bssid = %s\n",
b481de9c
ZY		 1166 ((priv->staging_rxon.filter_flags &
1167 RXON_FILTER_ASSOC_MSK) ? "" : "out"),
1168 le16_to_cpu(priv->staging_rxon.channel),
0795af57 1169 print_mac(mac, priv->staging_rxon.bssid_addr));
b481de9c
ZY		 1170
1171 /* Apply the new configuration */
1172 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
1173 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
1174 if (rc) {
1175 IWL_ERROR("Error setting new configuration (%d).\n", rc);
1176 return rc;
1177 }
1178
1179#ifdef CONFIG_IWLWIFI_SENSITIVITY
1180 if (!priv->error_recovering)
1181 priv->start_calib = 0;
1182
1183 priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1184 iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1185#endif /* CONFIG_IWLWIFI_SENSITIVITY */
1186
1187 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1188
1189 /* If we issue a new RXON command which required a tune then we must
1190 * send a new TXPOWER command or we won't be able to Tx any frames */
1191 rc = iwl_hw_reg_send_txpower(priv);
1192 if (rc) {
1193 IWL_ERROR("Error setting Tx power (%d).\n", rc);
1194 return rc;
1195 }
1196
1197 /* Add the broadcast address so we can send broadcast frames */
1198 if (iwl_rxon_add_station(priv, BROADCAST_ADDR, 0) ==
1199 IWL_INVALID_STATION) {
1200 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1201 return -EIO;
1202 }
1203
1204 /* If we have set the ASSOC_MSK and we are in BSS mode then
1205 * add the IWL_AP_ID to the station rate table */
1206 if (iwl_is_associated(priv) &&
1207 (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
1208 if (iwl_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
1209 == IWL_INVALID_STATION) {
1210 IWL_ERROR("Error adding AP address for transmit.\n");
1211 return -EIO;
1212 }
1213 priv->assoc_station_added = 1;
1214 }
1215
1216 return 0;
1217}
1218
1219static int iwl_send_bt_config(struct iwl_priv *priv)
1220{
1221 struct iwl_bt_cmd bt_cmd = {
1222 .flags = 3,
1223 .lead_time = 0xAA,
1224 .max_kill = 1,
1225 .kill_ack_mask = 0,
1226 .kill_cts_mask = 0,
1227 };
1228
1229 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1230 sizeof(struct iwl_bt_cmd), &bt_cmd);
1231}
1232
1233static int iwl_send_scan_abort(struct iwl_priv *priv)
1234{
1235 int rc = 0;
1236 struct iwl_rx_packet *res;
1237 struct iwl_host_cmd cmd = {
1238 .id = REPLY_SCAN_ABORT_CMD,
1239 .meta.flags = CMD_WANT_SKB,
1240 };
1241
1242 /* If there isn't a scan actively going on in the hardware
1243 * then we are in between scan bands and not actually
1244 * actively scanning, so don't send the abort command */
1245 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1246 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1247 return 0;
1248 }
1249
1250 rc = iwl_send_cmd_sync(priv, &cmd);
1251 if (rc) {
1252 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1253 return rc;
1254 }
1255
1256 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1257 if (res->u.status != CAN_ABORT_STATUS) {
1258 /* The scan abort will return 1 for success or
1259 * 2 for "failure". A failure condition can be
1260 * due to simply not being in an active scan which
1261 * can occur if we send the scan abort before we
1262 * the microcode has notified us that a scan is
1263 * completed. */
1264 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1265 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1266 clear_bit(STATUS_SCAN_HW, &priv->status);
1267 }
1268
1269 dev_kfree_skb_any(cmd.meta.u.skb);
1270
1271 return rc;
1272}
1273
1274static int iwl_card_state_sync_callback(struct iwl_priv *priv,
1275 struct iwl_cmd *cmd,
1276 struct sk_buff *skb)
1277{
1278 return 1;
1279}
1280
1281/*
1282 * CARD_STATE_CMD
1283 *
1284 * Use: Sets the internal card state to enable, disable, or halt
1285 *
1286 * When in the 'enable' state the card operates as normal.
1287 * When in the 'disable' state, the card enters into a low power mode.
1288 * When in the 'halt' state, the card is shut down and must be fully
1289 * restarted to come back on.
1290 */
1291static int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
1292{
1293 struct iwl_host_cmd cmd = {
1294 .id = REPLY_CARD_STATE_CMD,
1295 .len = sizeof(u32),
1296 .data = &flags,
1297 .meta.flags = meta_flag,
1298 };
1299
1300 if (meta_flag & CMD_ASYNC)
1301 cmd.meta.u.callback = iwl_card_state_sync_callback;
1302
1303 return iwl_send_cmd(priv, &cmd);
1304}
1305
1306static int iwl_add_sta_sync_callback(struct iwl_priv *priv,
1307 struct iwl_cmd *cmd, struct sk_buff *skb)
1308{
1309 struct iwl_rx_packet *res = NULL;
1310
1311 if (!skb) {
1312 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1313 return 1;
1314 }
1315
1316 res = (struct iwl_rx_packet *)skb->data;
1317 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1318 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1319 res->hdr.flags);
1320 return 1;
1321 }
1322
1323 switch (res->u.add_sta.status) {
1324 case ADD_STA_SUCCESS_MSK:
1325 break;
1326 default:
1327 break;
1328 }
1329
1330 /* We didn't cache the SKB; let the caller free it */
1331 return 1;
1332}
1333
1334int iwl_send_add_station(struct iwl_priv *priv,
1335 struct iwl_addsta_cmd *sta, u8 flags)
1336{
1337 struct iwl_rx_packet *res = NULL;
1338 int rc = 0;
1339 struct iwl_host_cmd cmd = {
1340 .id = REPLY_ADD_STA,
1341 .len = sizeof(struct iwl_addsta_cmd),
1342 .meta.flags = flags,
1343 .data = sta,
1344 };
1345
1346 if (flags & CMD_ASYNC)
1347 cmd.meta.u.callback = iwl_add_sta_sync_callback;
1348 else
1349 cmd.meta.flags |= CMD_WANT_SKB;
1350
1351 rc = iwl_send_cmd(priv, &cmd);
1352
1353 if (rc || (flags & CMD_ASYNC))
1354 return rc;
1355
1356 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1357 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1358 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1359 res->hdr.flags);
1360 rc = -EIO;
1361 }
1362
1363 if (rc == 0) {
1364 switch (res->u.add_sta.status) {
1365 case ADD_STA_SUCCESS_MSK:
1366 IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1367 break;
1368 default:
1369 rc = -EIO;
1370 IWL_WARNING("REPLY_ADD_STA failed\n");
1371 break;
1372 }
1373 }
1374
1375 priv->alloc_rxb_skb--;
1376 dev_kfree_skb_any(cmd.meta.u.skb);
1377
1378 return rc;
1379}
1380
1381static int iwl_update_sta_key_info(struct iwl_priv *priv,
1382 struct ieee80211_key_conf *keyconf,
1383 u8 sta_id)
1384{
1385 unsigned long flags;
1386 __le16 key_flags = 0;
1387
1388 switch (keyconf->alg) {
1389 case ALG_CCMP:
1390 key_flags |= STA_KEY_FLG_CCMP;
1391 key_flags |= cpu_to_le16(
1392 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1393 key_flags &= ~STA_KEY_FLG_INVALID;
1394 break;
1395 case ALG_TKIP:
1396 case ALG_WEP:
1397 return -EINVAL;
1398 default:
1399 return -EINVAL;
1400 }
1401 spin_lock_irqsave(&priv->sta_lock, flags);
1402 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1403 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1404 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1405 keyconf->keylen);
1406
1407 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1408 keyconf->keylen);
1409 priv->stations[sta_id].sta.key.key_flags = key_flags;
1410 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1411 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1412
1413 spin_unlock_irqrestore(&priv->sta_lock, flags);
1414
1415 IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1416 iwl_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1417 return 0;
1418}
1419
1420static int iwl_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
1421{
1422 unsigned long flags;
1423
1424 spin_lock_irqsave(&priv->sta_lock, flags);
1425 memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl_hw_key));
1426 memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl_keyinfo));
1427 priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1428 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1429 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1430 spin_unlock_irqrestore(&priv->sta_lock, flags);
1431
1432 IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1433 iwl_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1434 return 0;
1435}
1436
1437static void iwl_clear_free_frames(struct iwl_priv *priv)
1438{
1439 struct list_head *element;
1440
1441 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1442 priv->frames_count);
1443
1444 while (!list_empty(&priv->free_frames)) {
1445 element = priv->free_frames.next;
1446 list_del(element);
1447 kfree(list_entry(element, struct iwl_frame, list));
1448 priv->frames_count--;
1449 }
1450
1451 if (priv->frames_count) {
1452 IWL_WARNING("%d frames still in use. Did we lose one?\n",
1453 priv->frames_count);
1454 priv->frames_count = 0;
1455 }
1456}
1457
1458static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
1459{
1460 struct iwl_frame *frame;
1461 struct list_head *element;
1462 if (list_empty(&priv->free_frames)) {
1463 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1464 if (!frame) {
1465 IWL_ERROR("Could not allocate frame!\n");
1466 return NULL;
1467 }
1468
1469 priv->frames_count++;
1470 return frame;
1471 }
1472
1473 element = priv->free_frames.next;
1474 list_del(element);
1475 return list_entry(element, struct iwl_frame, list);
1476}
1477
1478static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
1479{
1480 memset(frame, 0, sizeof(*frame));
1481 list_add(&frame->list, &priv->free_frames);
1482}
1483
1484unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
1485 struct ieee80211_hdr *hdr,
1486 const u8 *dest, int left)
1487{
1488
1489 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
1490 ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1491 (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1492 return 0;
1493
1494 if (priv->ibss_beacon->len > left)
1495 return 0;
1496
1497 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1498
1499 return priv->ibss_beacon->len;
1500}
1501
1502int iwl_rate_index_from_plcp(int plcp)
1503{
1504 int i = 0;
1505
1506 if (plcp & RATE_MCS_HT_MSK) {
1507 i = (plcp & 0xff);
1508
1509 if (i >= IWL_RATE_MIMO_6M_PLCP)
1510 i = i - IWL_RATE_MIMO_6M_PLCP;
1511
1512 i += IWL_FIRST_OFDM_RATE;
1513 /* skip 9M not supported in ht*/
1514 if (i >= IWL_RATE_9M_INDEX)
1515 i += 1;
1516 if ((i >= IWL_FIRST_OFDM_RATE) &&
1517 (i <= IWL_LAST_OFDM_RATE))
1518 return i;
1519 } else {
1520 for (i = 0; i < ARRAY_SIZE(iwl_rates); i++)
1521 if (iwl_rates[i].plcp == (plcp &0xFF))
1522 return i;
1523 }
1524 return -1;
1525}
1526
1527static u8 iwl_rate_get_lowest_plcp(int rate_mask)
1528{
1529 u8 i;
1530
1531 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1532 i = iwl_rates[i].next_ieee) {
1533 if (rate_mask & (1 << i))
1534 return iwl_rates[i].plcp;
1535 }
1536
1537 return IWL_RATE_INVALID;
1538}
1539
1540static int iwl_send_beacon_cmd(struct iwl_priv *priv)
1541{
1542 struct iwl_frame *frame;
1543 unsigned int frame_size;
1544 int rc;
1545 u8 rate;
1546
1547 frame = iwl_get_free_frame(priv);
1548
1549 if (!frame) {
1550 IWL_ERROR("Could not obtain free frame buffer for beacon "
1551 "command.\n");
1552 return -ENOMEM;
1553 }
1554
1555 if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1556 rate = iwl_rate_get_lowest_plcp(priv->active_rate_basic &
1557 0xFF0);
1558 if (rate == IWL_INVALID_RATE)
1559 rate = IWL_RATE_6M_PLCP;
1560 } else {
1561 rate = iwl_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1562 if (rate == IWL_INVALID_RATE)
1563 rate = IWL_RATE_1M_PLCP;
1564 }
1565
1566 frame_size = iwl_hw_get_beacon_cmd(priv, frame, rate);
1567
1568 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1569 &frame->u.cmd[0]);
1570
1571 iwl_free_frame(priv, frame);
1572
1573 return rc;
1574}
1575
1576/******************************************************************************
1577 *
1578 * EEPROM related functions
1579 *
1580 ******************************************************************************/
1581
1582static void get_eeprom_mac(struct iwl_priv *priv, u8 *mac)
1583{
1584 memcpy(mac, priv->eeprom.mac_address, 6);
1585}
1586
1587/**
1588 * iwl_eeprom_init - read EEPROM contents
1589 *
1590 * Load the EEPROM from adapter into priv->eeprom
1591 *
1592 * NOTE: This routine uses the non-debug IO access functions.
1593 */
1594int iwl_eeprom_init(struct iwl_priv *priv)
1595{
1596 u16 *e = (u16 *)&priv->eeprom;
1597 u32 gp = iwl_read32(priv, CSR_EEPROM_GP);
1598 u32 r;
1599 int sz = sizeof(priv->eeprom);
1600 int rc;
1601 int i;
1602 u16 addr;
1603
1604 /* The EEPROM structure has several padding buffers within it
1605 * and when adding new EEPROM maps is subject to programmer errors
1606 * which may be very difficult to identify without explicitly
1607 * checking the resulting size of the eeprom map. */
1608 BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);
1609
1610 if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1611 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp);
1612 return -ENOENT;
1613 }
1614
1615 rc = iwl_eeprom_aqcuire_semaphore(priv);
1616 if (rc < 0) {
1617 IWL_ERROR("Failed to aqcuire EEPROM semaphore.\n");
1618 return -ENOENT;
1619 }
1620
1621 /* eeprom is an array of 16bit values */
1622 for (addr = 0; addr < sz; addr += sizeof(u16)) {
1623 _iwl_write32(priv, CSR_EEPROM_REG, addr << 1);
1624 _iwl_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1625
1626 for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT;
1627 i += IWL_EEPROM_ACCESS_DELAY) {
1628 r = _iwl_read_restricted(priv, CSR_EEPROM_REG);
1629 if (r & CSR_EEPROM_REG_READ_VALID_MSK)
1630 break;
1631 udelay(IWL_EEPROM_ACCESS_DELAY);
1632 }
1633
1634 if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) {
1635 IWL_ERROR("Time out reading EEPROM[%d]", addr);
1636 rc = -ETIMEDOUT;
1637 goto done;
1638 }
1639 e[addr / 2] = le16_to_cpu(r >> 16);
1640 }
1641 rc = 0;
1642
1643done:
1644 iwl_eeprom_release_semaphore(priv);
1645 return rc;
1646}
1647
1648/******************************************************************************
1649 *
1650 * Misc. internal state and helper functions
1651 *
1652 ******************************************************************************/
1653#ifdef CONFIG_IWLWIFI_DEBUG
1654
1655/**
1656 * iwl_report_frame - dump frame to syslog during debug sessions
1657 *
1658 * hack this function to show different aspects of received frames,
1659 * including selective frame dumps.
1660 * group100 parameter selects whether to show 1 out of 100 good frames.
1661 *
1662 * TODO: ieee80211_hdr stuff is common to 3945 and 4965, so frame type
1663 * info output is okay, but some of this stuff (e.g. iwl_rx_frame_stats)
1664 * is 3945-specific and gives bad output for 4965. Need to split the
1665 * functionality, keep common stuff here.
1666 */
1667void iwl_report_frame(struct iwl_priv *priv,
1668 struct iwl_rx_packet *pkt,
1669 struct ieee80211_hdr *header, int group100)
1670{
1671 u32 to_us;
1672 u32 print_summary = 0;
1673 u32 print_dump = 0; /* set to 1 to dump all frames' contents */
1674 u32 hundred = 0;
1675 u32 dataframe = 0;
1676 u16 fc;
1677 u16 seq_ctl;
1678 u16 channel;
1679 u16 phy_flags;
1680 int rate_sym;
1681 u16 length;
1682 u16 status;
1683 u16 bcn_tmr;
1684 u32 tsf_low;
1685 u64 tsf;
1686 u8 rssi;
1687 u8 agc;
1688 u16 sig_avg;
1689 u16 noise_diff;
1690 struct iwl_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
1691 struct iwl_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
1692 struct iwl_rx_frame_end *rx_end = IWL_RX_END(pkt);
1693 u8 *data = IWL_RX_DATA(pkt);
1694
1695 /* MAC header */
1696 fc = le16_to_cpu(header->frame_control);
1697 seq_ctl = le16_to_cpu(header->seq_ctrl);
1698
1699 /* metadata */
1700 channel = le16_to_cpu(rx_hdr->channel);
1701 phy_flags = le16_to_cpu(rx_hdr->phy_flags);
1702 rate_sym = rx_hdr->rate;
1703 length = le16_to_cpu(rx_hdr->len);
1704
1705 /* end-of-frame status and timestamp */
1706 status = le32_to_cpu(rx_end->status);
1707 bcn_tmr = le32_to_cpu(rx_end->beacon_timestamp);
1708 tsf_low = le64_to_cpu(rx_end->timestamp) & 0x0ffffffff;
1709 tsf = le64_to_cpu(rx_end->timestamp);
1710
1711 /* signal statistics */
1712 rssi = rx_stats->rssi;
1713 agc = rx_stats->agc;
1714 sig_avg = le16_to_cpu(rx_stats->sig_avg);
1715 noise_diff = le16_to_cpu(rx_stats->noise_diff);
1716
1717 to_us = !compare_ether_addr(header->addr1, priv->mac_addr);
1718
1719 /* if data frame is to us and all is good,
1720 * (optionally) print summary for only 1 out of every 100 */
1721 if (to_us && (fc & ~IEEE80211_FCTL_PROTECTED) ==
1722 (IEEE80211_FCTL_FROMDS | IEEE80211_FTYPE_DATA)) {
1723 dataframe = 1;
1724 if (!group100)
1725 print_summary = 1; /* print each frame */
1726 else if (priv->framecnt_to_us < 100) {
1727 priv->framecnt_to_us++;
1728 print_summary = 0;
1729 } else {
1730 priv->framecnt_to_us = 0;
1731 print_summary = 1;
1732 hundred = 1;
1733 }
1734 } else {
1735 /* print summary for all other frames */
1736 print_summary = 1;
1737 }
1738
1739 if (print_summary) {
1740 char *title;
1741 u32 rate;
1742
1743 if (hundred)
1744 title = "100Frames";
1745 else if (fc & IEEE80211_FCTL_RETRY)
1746 title = "Retry";
1747 else if (ieee80211_is_assoc_response(fc))
1748 title = "AscRsp";
1749 else if (ieee80211_is_reassoc_response(fc))
1750 title = "RasRsp";
1751 else if (ieee80211_is_probe_response(fc)) {
1752 title = "PrbRsp";
1753 print_dump = 1; /* dump frame contents */
1754 } else if (ieee80211_is_beacon(fc)) {
1755 title = "Beacon";
1756 print_dump = 1; /* dump frame contents */
1757 } else if (ieee80211_is_atim(fc))
1758 title = "ATIM";
1759 else if (ieee80211_is_auth(fc))
1760 title = "Auth";
1761 else if (ieee80211_is_deauth(fc))
1762 title = "DeAuth";
1763 else if (ieee80211_is_disassoc(fc))
1764 title = "DisAssoc";
1765 else
1766 title = "Frame";
1767
1768 rate = iwl_rate_index_from_plcp(rate_sym);
1769 if (rate == -1)
1770 rate = 0;
1771 else
1772 rate = iwl_rates[rate].ieee / 2;
1773
1774 /* print frame summary.
1775 * MAC addresses show just the last byte (for brevity),
1776 * but you can hack it to show more, if you'd like to. */
1777 if (dataframe)
1778 IWL_DEBUG_RX("%s: mhd=0x%04x, dst=0x%02x, "
1779 "len=%u, rssi=%d, chnl=%d, rate=%u, \n",
1780 title, fc, header->addr1[5],
1781 length, rssi, channel, rate);
1782 else {
1783 /* src/dst addresses assume managed mode */
1784 IWL_DEBUG_RX("%s: 0x%04x, dst=0x%02x, "
1785 "src=0x%02x, rssi=%u, tim=%lu usec, "
1786 "phy=0x%02x, chnl=%d\n",
1787 title, fc, header->addr1[5],
1788 header->addr3[5], rssi,
1789 tsf_low - priv->scan_start_tsf,
1790 phy_flags, channel);
1791 }
1792 }
1793 if (print_dump)
1794 iwl_print_hex_dump(IWL_DL_RX, data, length);
1795}
1796#endif
1797
1798static void iwl_unset_hw_setting(struct iwl_priv *priv)
1799{
1800 if (priv->hw_setting.shared_virt)
1801 pci_free_consistent(priv->pci_dev,
1802 sizeof(struct iwl_shared),
1803 priv->hw_setting.shared_virt,
1804 priv->hw_setting.shared_phys);
1805}
1806
1807/**
1808 * iwl_supported_rate_to_ie - fill in the supported rate in IE field
1809 *
1810 * return : set the bit for each supported rate insert in ie
1811 */
1812static u16 iwl_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1813 u16 basic_rate, int max_count)
1814{
1815 u16 ret_rates = 0, bit;
1816 int i;
1817 u8 *rates;
1818
1819 rates = &(ie[1]);
1820
1821 for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1822 if (bit & supported_rate) {
1823 ret_rates |= bit;
1824 rates[*ie] = iwl_rates[i].ieee |
1825 ((bit & basic_rate) ? 0x80 : 0x00);
1826 *ie = *ie + 1;
1827 if (*ie >= max_count)
1828 break;
1829 }
1830 }
1831
1832 return ret_rates;
1833}
1834
1835#ifdef CONFIG_IWLWIFI_HT
1836void static iwl_set_ht_capab(struct ieee80211_hw *hw,
1837 struct ieee80211_ht_capability *ht_cap,
1838 u8 use_wide_chan);
1839#endif
1840
1841/**
1842 * iwl_fill_probe_req - fill in all required fields and IE for probe request
1843 */
1844static u16 iwl_fill_probe_req(struct iwl_priv *priv,
1845 struct ieee80211_mgmt *frame,
1846 int left, int is_direct)
1847{
1848 int len = 0;
1849 u8 *pos = NULL;
1850 u16 ret_rates;
1851
1852 /* Make sure there is enough space for the probe request,
1853 * two mandatory IEs and the data */
1854 left -= 24;
1855 if (left < 0)
1856 return 0;
1857 len += 24;
1858
1859 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1860 memcpy(frame->da, BROADCAST_ADDR, ETH_ALEN);
1861 memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1862 memcpy(frame->bssid, BROADCAST_ADDR, ETH_ALEN);
1863 frame->seq_ctrl = 0;
1864
1865 /* fill in our indirect SSID IE */
1866 /* ...next IE... */
1867
1868 left -= 2;
1869 if (left < 0)
1870 return 0;
1871 len += 2;
1872 pos = &(frame->u.probe_req.variable[0]);
1873 *pos++ = WLAN_EID_SSID;
1874 *pos++ = 0;
1875
1876 /* fill in our direct SSID IE... */
1877 if (is_direct) {
1878 /* ...next IE... */
1879 left -= 2 + priv->essid_len;
1880 if (left < 0)
1881 return 0;
1882 /* ... fill it in... */
1883 *pos++ = WLAN_EID_SSID;
1884 *pos++ = priv->essid_len;
1885 memcpy(pos, priv->essid, priv->essid_len);
1886 pos += priv->essid_len;
1887 len += 2 + priv->essid_len;
1888 }
1889
1890 /* fill in supported rate */
1891 /* ...next IE... */
1892 left -= 2;
1893 if (left < 0)
1894 return 0;
1895 /* ... fill it in... */
1896 *pos++ = WLAN_EID_SUPP_RATES;
1897 *pos = 0;
1898 ret_rates = priv->active_rate = priv->rates_mask;
1899 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1900
1901 iwl_supported_rate_to_ie(pos, priv->active_rate,
1902 priv->active_rate_basic, left);
1903 len += 2 + *pos;
1904 pos += (*pos) + 1;
1905 ret_rates = ~ret_rates & priv->active_rate;
1906
1907 if (ret_rates == 0)
1908 goto fill_end;
1909
1910 /* fill in supported extended rate */
1911 /* ...next IE... */
1912 left -= 2;
1913 if (left < 0)
1914 return 0;
1915 /* ... fill it in... */
1916 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1917 *pos = 0;
1918 iwl_supported_rate_to_ie(pos, ret_rates, priv->active_rate_basic, left);
1919 if (*pos > 0)
1920 len += 2 + *pos;
1921
1922#ifdef CONFIG_IWLWIFI_HT
1923 if (is_direct && priv->is_ht_enabled) {
1924 u8 use_wide_chan = 1;
1925
1926 if (priv->channel_width != IWL_CHANNEL_WIDTH_40MHZ)
1927 use_wide_chan = 0;
1928 pos += (*pos) + 1;
1929 *pos++ = WLAN_EID_HT_CAPABILITY;
1930 *pos++ = sizeof(struct ieee80211_ht_capability);
1931 iwl_set_ht_capab(NULL, (struct ieee80211_ht_capability *)pos,
1932 use_wide_chan);
1933 len += 2 + sizeof(struct ieee80211_ht_capability);
1934 }
1935#endif /*CONFIG_IWLWIFI_HT */
1936
1937 fill_end:
1938 return (u16)len;
1939}
1940
1941/*
1942 * QoS support
1943*/
1944#ifdef CONFIG_IWLWIFI_QOS
1945static int iwl_send_qos_params_command(struct iwl_priv *priv,
1946 struct iwl_qosparam_cmd *qos)
1947{
1948
1949 return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1950 sizeof(struct iwl_qosparam_cmd), qos);
1951}
1952
1953static void iwl_reset_qos(struct iwl_priv *priv)
1954{
1955 u16 cw_min = 15;
1956 u16 cw_max = 1023;
1957 u8 aifs = 2;
1958 u8 is_legacy = 0;
1959 unsigned long flags;
1960 int i;
1961
1962 spin_lock_irqsave(&priv->lock, flags);
1963 priv->qos_data.qos_active = 0;
1964
1965 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) {
1966 if (priv->qos_data.qos_enable)
1967 priv->qos_data.qos_active = 1;
1968 if (!(priv->active_rate & 0xfff0)) {
1969 cw_min = 31;
1970 is_legacy = 1;
1971 }
1972 } else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1973 if (priv->qos_data.qos_enable)
1974 priv->qos_data.qos_active = 1;
1975 } else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
1976 cw_min = 31;
1977 is_legacy = 1;
1978 }
1979
1980 if (priv->qos_data.qos_active)
1981 aifs = 3;
1982
1983 priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
1984 priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
1985 priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
1986 priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
1987 priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
1988
1989 if (priv->qos_data.qos_active) {
1990 i = 1;
1991 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
1992 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
1993 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
1994 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1995 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1996
1997 i = 2;
1998 priv->qos_data.def_qos_parm.ac[i].cw_min =
1999 cpu_to_le16((cw_min + 1) / 2 - 1);
2000 priv->qos_data.def_qos_parm.ac[i].cw_max =
2001 cpu_to_le16(cw_max);
2002 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
2003 if (is_legacy)
2004 priv->qos_data.def_qos_parm.ac[i].edca_txop =
2005 cpu_to_le16(6016);
2006 else
2007 priv->qos_data.def_qos_parm.ac[i].edca_txop =
2008 cpu_to_le16(3008);
2009 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2010
2011 i = 3;
2012 priv->qos_data.def_qos_parm.ac[i].cw_min =
2013 cpu_to_le16((cw_min + 1) / 4 - 1);
2014 priv->qos_data.def_qos_parm.ac[i].cw_max =
2015 cpu_to_le16((cw_max + 1) / 2 - 1);
2016 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
2017 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2018 if (is_legacy)
2019 priv->qos_data.def_qos_parm.ac[i].edca_txop =
2020 cpu_to_le16(3264);
2021 else
2022 priv->qos_data.def_qos_parm.ac[i].edca_txop =
2023 cpu_to_le16(1504);
2024 } else {
2025 for (i = 1; i < 4; i++) {
2026 priv->qos_data.def_qos_parm.ac[i].cw_min =
2027 cpu_to_le16(cw_min);
2028 priv->qos_data.def_qos_parm.ac[i].cw_max =
2029 cpu_to_le16(cw_max);
2030 priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
2031 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
2032 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2033 }
2034 }
2035 IWL_DEBUG_QOS("set QoS to default \n");
2036
2037 spin_unlock_irqrestore(&priv->lock, flags);
2038}
2039
2040static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
2041{
2042 unsigned long flags;
2043
2044 if (priv == NULL)
2045 return;
2046
2047 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2048 return;
2049
2050 if (!priv->qos_data.qos_enable)
2051 return;
2052
2053 spin_lock_irqsave(&priv->lock, flags);
2054 priv->qos_data.def_qos_parm.qos_flags = 0;
2055
2056 if (priv->qos_data.qos_cap.q_AP.queue_request &&
2057 !priv->qos_data.qos_cap.q_AP.txop_request)
2058 priv->qos_data.def_qos_parm.qos_flags |=
2059 QOS_PARAM_FLG_TXOP_TYPE_MSK;
2060
2061 if (priv->qos_data.qos_active)
2062 priv->qos_data.def_qos_parm.qos_flags |=
2063 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
2064
2065 spin_unlock_irqrestore(&priv->lock, flags);
2066
2067 if (force || iwl_is_associated(priv)) {
2068 IWL_DEBUG_QOS("send QoS cmd with Qos active %d \n",
2069 priv->qos_data.qos_active);
2070
2071 iwl_send_qos_params_command(priv,
2072 &(priv->qos_data.def_qos_parm));
2073 }
2074}
2075
2076#endif /* CONFIG_IWLWIFI_QOS */
2077/*
2078 * Power management (not Tx power!) functions
2079 */
2080#define MSEC_TO_USEC 1024
2081
2082#define NOSLP __constant_cpu_to_le16(0), 0, 0
2083#define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
2084#define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
2085#define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
2086 __constant_cpu_to_le32(X1), \
2087 __constant_cpu_to_le32(X2), \
2088 __constant_cpu_to_le32(X3), \
2089 __constant_cpu_to_le32(X4)}
2090
2091
2092/* default power management (not Tx power) table values */
2093/* for tim 0-10 */
2094static struct iwl_power_vec_entry range_0[IWL_POWER_AC] = {
2095 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2096 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
2097 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
2098 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
2099 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
2100 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
2101};
2102
2103/* for tim > 10 */
2104static struct iwl_power_vec_entry range_1[IWL_POWER_AC] = {
2105 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2106 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
2107 SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
2108 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
2109 SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
2110 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
2111 SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
2112 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
2113 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
2114 SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
2115};
2116
2117int iwl_power_init_handle(struct iwl_priv *priv)
2118{
2119 int rc = 0, i;
2120 struct iwl_power_mgr *pow_data;
2121 int size = sizeof(struct iwl_power_vec_entry) * IWL_POWER_AC;
2122 u16 pci_pm;
2123
2124 IWL_DEBUG_POWER("Initialize power \n");
2125
2126 pow_data = &(priv->power_data);
2127
2128 memset(pow_data, 0, sizeof(*pow_data));
2129
2130 pow_data->active_index = IWL_POWER_RANGE_0;
2131 pow_data->dtim_val = 0xffff;
2132
2133 memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
2134 memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
2135
2136 rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
2137 if (rc != 0)
2138 return 0;
2139 else {
2140 struct iwl_powertable_cmd *cmd;
2141
2142 IWL_DEBUG_POWER("adjust power command flags\n");
2143
2144 for (i = 0; i < IWL_POWER_AC; i++) {
2145 cmd = &pow_data->pwr_range_0[i].cmd;
2146
2147 if (pci_pm & 0x1)
2148 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
2149 else
2150 cmd->flags |= IWL_POWER_PCI_PM_MSK;
2151 }
2152 }
2153 return rc;
2154}
2155
2156static int iwl_update_power_cmd(struct iwl_priv *priv,
2157 struct iwl_powertable_cmd *cmd, u32 mode)
2158{
2159 int rc = 0, i;
2160 u8 skip;
2161 u32 max_sleep = 0;
2162 struct iwl_power_vec_entry *range;
2163 u8 period = 0;
2164 struct iwl_power_mgr *pow_data;
2165
2166 if (mode > IWL_POWER_INDEX_5) {
2167 IWL_DEBUG_POWER("Error invalid power mode \n");
2168 return -1;
2169 }
2170 pow_data = &(priv->power_data);
2171
2172 if (pow_data->active_index == IWL_POWER_RANGE_0)
2173 range = &pow_data->pwr_range_0[0];
2174 else
2175 range = &pow_data->pwr_range_1[1];
2176
2177 memcpy(cmd, &range[mode].cmd, sizeof(struct iwl_powertable_cmd));
2178
2179#ifdef IWL_MAC80211_DISABLE
2180 if (priv->assoc_network != NULL) {
2181 unsigned long flags;
2182
2183 period = priv->assoc_network->tim.tim_period;
2184 }
2185#endif /*IWL_MAC80211_DISABLE */
2186 skip = range[mode].no_dtim;
2187
2188 if (period == 0) {
2189 period = 1;
2190 skip = 0;
2191 }
2192
2193 if (skip == 0) {
2194 max_sleep = period;
2195 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
2196 } else {
2197 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
2198 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
2199 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
2200 }
2201
2202 for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
2203 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
2204 cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
2205 }
2206
2207 IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
2208 IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
2209 IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
2210 IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
2211 le32_to_cpu(cmd->sleep_interval[0]),
2212 le32_to_cpu(cmd->sleep_interval[1]),
2213 le32_to_cpu(cmd->sleep_interval[2]),
2214 le32_to_cpu(cmd->sleep_interval[3]),
2215 le32_to_cpu(cmd->sleep_interval[4]));
2216
2217 return rc;
2218}
2219
2220static int iwl_send_power_mode(struct iwl_priv *priv, u32 mode)
2221{
2222 u32 final_mode = mode;
2223 int rc;
2224 struct iwl_powertable_cmd cmd;
2225
2226 /* If on battery, set to 3,
2227 * if plugged into AC power, set to CAM ("continuosly aware mode"),
2228 * else user level */
2229 switch (mode) {
2230 case IWL_POWER_BATTERY:
2231 final_mode = IWL_POWER_INDEX_3;
2232 break;
2233 case IWL_POWER_AC:
2234 final_mode = IWL_POWER_MODE_CAM;
2235 break;
2236 default:
2237 final_mode = mode;
2238 break;
2239 }
2240
2241 cmd.keep_alive_beacons = 0;
2242
2243 iwl_update_power_cmd(priv, &cmd, final_mode);
2244
2245 rc = iwl_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
2246
2247 if (final_mode == IWL_POWER_MODE_CAM)
2248 clear_bit(STATUS_POWER_PMI, &priv->status);
2249 else
2250 set_bit(STATUS_POWER_PMI, &priv->status);
2251
2252 return rc;
2253}
2254
2255int iwl_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
2256{
2257 /* Filter incoming packets to determine if they are targeted toward
2258 * this network, discarding packets coming from ourselves */
2259 switch (priv->iw_mode) {
2260 case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source | BSSID */
2261 /* packets from our adapter are dropped (echo) */
2262 if (!compare_ether_addr(header->addr2, priv->mac_addr))
2263 return 0;
2264 /* {broad,multi}cast packets to our IBSS go through */
2265 if (is_multicast_ether_addr(header->addr1))
2266 return !compare_ether_addr(header->addr3, priv->bssid);
2267 /* packets to our adapter go through */
2268 return !compare_ether_addr(header->addr1, priv->mac_addr);
2269 case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
2270 /* packets from our adapter are dropped (echo) */
2271 if (!compare_ether_addr(header->addr3, priv->mac_addr))
2272 return 0;
2273 /* {broad,multi}cast packets to our BSS go through */
2274 if (is_multicast_ether_addr(header->addr1))
2275 return !compare_ether_addr(header->addr2, priv->bssid);
2276 /* packets to our adapter go through */
2277 return !compare_ether_addr(header->addr1, priv->mac_addr);
2278 }
2279
2280 return 1;
2281}
2282
2283#define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2284
2285const char *iwl_get_tx_fail_reason(u32 status)
2286{
2287 switch (status & TX_STATUS_MSK) {
2288 case TX_STATUS_SUCCESS:
2289 return "SUCCESS";
2290 TX_STATUS_ENTRY(SHORT_LIMIT);
2291 TX_STATUS_ENTRY(LONG_LIMIT);
2292 TX_STATUS_ENTRY(FIFO_UNDERRUN);
2293 TX_STATUS_ENTRY(MGMNT_ABORT);
2294 TX_STATUS_ENTRY(NEXT_FRAG);
2295 TX_STATUS_ENTRY(LIFE_EXPIRE);
2296 TX_STATUS_ENTRY(DEST_PS);
2297 TX_STATUS_ENTRY(ABORTED);
2298 TX_STATUS_ENTRY(BT_RETRY);
2299 TX_STATUS_ENTRY(STA_INVALID);
2300 TX_STATUS_ENTRY(FRAG_DROPPED);
2301 TX_STATUS_ENTRY(TID_DISABLE);
2302 TX_STATUS_ENTRY(FRAME_FLUSHED);
2303 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
2304 TX_STATUS_ENTRY(TX_LOCKED);
2305 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
2306 }
2307
2308 return "UNKNOWN";
2309}
2310
2311/**
2312 * iwl_scan_cancel - Cancel any currently executing HW scan
2313 *
2314 * NOTE: priv->mutex is not required before calling this function
2315 */
2316static int iwl_scan_cancel(struct iwl_priv *priv)
2317{
2318 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
2319 clear_bit(STATUS_SCANNING, &priv->status);
2320 return 0;
2321 }
2322
2323 if (test_bit(STATUS_SCANNING, &priv->status)) {
2324 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2325 IWL_DEBUG_SCAN("Queuing scan abort.\n");
2326 set_bit(STATUS_SCAN_ABORTING, &priv->status);
2327 queue_work(priv->workqueue, &priv->abort_scan);
2328
2329 } else
2330 IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2331
2332 return test_bit(STATUS_SCANNING, &priv->status);
2333 }
2334
2335 return 0;
2336}
2337
2338/**
2339 * iwl_scan_cancel_timeout - Cancel any currently executing HW scan
2340 * @ms: amount of time to wait (in milliseconds) for scan to abort
2341 *
2342 * NOTE: priv->mutex must be held before calling this function
2343 */
2344static int iwl_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
2345{
2346 unsigned long now = jiffies;
2347 int ret;
2348
2349 ret = iwl_scan_cancel(priv);
2350 if (ret && ms) {
2351 mutex_unlock(&priv->mutex);
2352 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
2353 test_bit(STATUS_SCANNING, &priv->status))
2354 msleep(1);
2355 mutex_lock(&priv->mutex);
2356
2357 return test_bit(STATUS_SCANNING, &priv->status);
2358 }
2359
2360 return ret;
2361}
2362
2363static void iwl_sequence_reset(struct iwl_priv *priv)
2364{
2365 /* Reset ieee stats */
2366
2367 /* We don't reset the net_device_stats (ieee->stats) on
2368 * re-association */
2369
2370 priv->last_seq_num = -1;
2371 priv->last_frag_num = -1;
2372 priv->last_packet_time = 0;
2373
2374 iwl_scan_cancel(priv);
2375}
2376
2377#define MAX_UCODE_BEACON_INTERVAL 4096
2378#define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
2379
2380static __le16 iwl_adjust_beacon_interval(u16 beacon_val)
2381{
2382 u16 new_val = 0;
2383 u16 beacon_factor = 0;
2384
2385 beacon_factor =
2386 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
2387 / MAX_UCODE_BEACON_INTERVAL;
2388 new_val = beacon_val / beacon_factor;
2389
2390 return cpu_to_le16(new_val);
2391}
2392
2393static void iwl_setup_rxon_timing(struct iwl_priv *priv)
2394{
2395 u64 interval_tm_unit;
2396 u64 tsf, result;
2397 unsigned long flags;
2398 struct ieee80211_conf *conf = NULL;
2399 u16 beacon_int = 0;
2400
2401 conf = ieee80211_get_hw_conf(priv->hw);
2402
2403 spin_lock_irqsave(&priv->lock, flags);
2404 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
2405 priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);
2406
2407 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
2408
2409 tsf = priv->timestamp1;
2410 tsf = ((tsf << 32) | priv->timestamp0);
2411
2412 beacon_int = priv->beacon_int;
2413 spin_unlock_irqrestore(&priv->lock, flags);
2414
2415 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
2416 if (beacon_int == 0) {
2417 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
2418 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
2419 } else {
2420 priv->rxon_timing.beacon_interval =
2421 cpu_to_le16(beacon_int);
2422 priv->rxon_timing.beacon_interval =
2423 iwl_adjust_beacon_interval(
2424 le16_to_cpu(priv->rxon_timing.beacon_interval));
2425 }
2426
2427 priv->rxon_timing.atim_window = 0;
2428 } else {
2429 priv->rxon_timing.beacon_interval =
2430 iwl_adjust_beacon_interval(conf->beacon_int);
2431 /* TODO: we need to get atim_window from upper stack
2432 * for now we set to 0 */
2433 priv->rxon_timing.atim_window = 0;
2434 }
2435
2436 interval_tm_unit =
2437 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2438 result = do_div(tsf, interval_tm_unit);
2439 priv->rxon_timing.beacon_init_val =
2440 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2441
2442 IWL_DEBUG_ASSOC
2443 ("beacon interval %d beacon timer %d beacon tim %d\n",
2444 le16_to_cpu(priv->rxon_timing.beacon_interval),
2445 le32_to_cpu(priv->rxon_timing.beacon_init_val),
2446 le16_to_cpu(priv->rxon_timing.atim_window));
2447}
2448
2449static int iwl_scan_initiate(struct iwl_priv *priv)
2450{
2451 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2452 IWL_ERROR("APs don't scan.\n");
2453 return 0;
2454 }
2455
2456 if (!iwl_is_ready_rf(priv)) {
2457 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2458 return -EIO;
2459 }
2460
2461 if (test_bit(STATUS_SCANNING, &priv->status)) {
2462 IWL_DEBUG_SCAN("Scan already in progress.\n");
2463 return -EAGAIN;
2464 }
2465
2466 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2467 IWL_DEBUG_SCAN("Scan request while abort pending. "
2468 "Queuing.\n");
2469 return -EAGAIN;
2470 }
2471
2472 IWL_DEBUG_INFO("Starting scan...\n");
2473 priv->scan_bands = 2;
2474 set_bit(STATUS_SCANNING, &priv->status);
2475 priv->scan_start = jiffies;
2476 priv->scan_pass_start = priv->scan_start;
2477
2478 queue_work(priv->workqueue, &priv->request_scan);
2479
2480 return 0;
2481}
2482
2483static int iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
2484{
2485 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
2486
2487 if (hw_decrypt)
2488 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2489 else
2490 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2491
2492 return 0;
2493}
2494
2495static void iwl_set_flags_for_phymode(struct iwl_priv *priv, u8 phymode)
2496{
2497 if (phymode == MODE_IEEE80211A) {
2498 priv->staging_rxon.flags &=
2499 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2500 | RXON_FLG_CCK_MSK);
2501 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2502 } else {
2503 /* Copied from iwl_bg_post_associate() */
2504 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2505 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2506 else
2507 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2508
2509 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2510 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2511
2512 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2513 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2514 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2515 }
2516}
2517
2518/*
2519 * initilize rxon structure with default values fromm eeprom
2520 */
2521static void iwl_connection_init_rx_config(struct iwl_priv *priv)
2522{
2523 const struct iwl_channel_info *ch_info;
2524
2525 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2526
2527 switch (priv->iw_mode) {
2528 case IEEE80211_IF_TYPE_AP:
2529 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2530 break;
2531
2532 case IEEE80211_IF_TYPE_STA:
2533 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2534 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2535 break;
2536
2537 case IEEE80211_IF_TYPE_IBSS:
2538 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2539 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2540 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2541 RXON_FILTER_ACCEPT_GRP_MSK;
2542 break;
2543
2544 case IEEE80211_IF_TYPE_MNTR:
2545 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2546 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2547 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2548 break;
2549 }
2550
2551#if 0
2552 /* TODO: Figure out when short_preamble would be set and cache from
2553 * that */
2554 if (!hw_to_local(priv->hw)->short_preamble)
2555 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2556 else
2557 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2558#endif
2559
2560 ch_info = iwl_get_channel_info(priv, priv->phymode,
2561 le16_to_cpu(priv->staging_rxon.channel));
2562
2563 if (!ch_info)
2564 ch_info = &priv->channel_info[0];
2565
2566 /*
2567 * in some case A channels are all non IBSS
2568 * in this case force B/G channel
2569 */
2570 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
2571 !(is_channel_ibss(ch_info)))
2572 ch_info = &priv->channel_info[0];
2573
2574 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2575 if (is_channel_a_band(ch_info))
2576 priv->phymode = MODE_IEEE80211A;
2577 else
2578 priv->phymode = MODE_IEEE80211G;
2579
2580 iwl_set_flags_for_phymode(priv, priv->phymode);
2581
2582 priv->staging_rxon.ofdm_basic_rates =
2583 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2584 priv->staging_rxon.cck_basic_rates =
2585 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2586
2587 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
2588 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
2589 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2590 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
2591 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
2592 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
2593 iwl4965_set_rxon_chain(priv);
2594}
2595
2596static int iwl_set_mode(struct iwl_priv *priv, int mode)
2597{
2598 if (!iwl_is_ready_rf(priv))
2599 return -EAGAIN;
2600
2601 if (mode == IEEE80211_IF_TYPE_IBSS) {
2602 const struct iwl_channel_info *ch_info;
2603
2604 ch_info = iwl_get_channel_info(priv,
2605 priv->phymode,
2606 le16_to_cpu(priv->staging_rxon.channel));
2607
2608 if (!ch_info || !is_channel_ibss(ch_info)) {
2609 IWL_ERROR("channel %d not IBSS channel\n",
2610 le16_to_cpu(priv->staging_rxon.channel));
2611 return -EINVAL;
2612 }
2613 }
2614
2615 cancel_delayed_work(&priv->scan_check);
2616 if (iwl_scan_cancel_timeout(priv, 100)) {
2617 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2618 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2619 return -EAGAIN;
2620 }
2621
2622 priv->iw_mode = mode;
2623
2624 iwl_connection_init_rx_config(priv);
2625 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2626
2627 iwl_clear_stations_table(priv);
2628
2629 iwl_commit_rxon(priv);
2630
2631 return 0;
2632}
2633
2634static void iwl_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
2635 struct ieee80211_tx_control *ctl,
2636 struct iwl_cmd *cmd,
2637 struct sk_buff *skb_frag,
2638 int last_frag)
2639{
2640 struct iwl_hw_key *keyinfo = &priv->stations[ctl->key_idx].keyinfo;
2641
2642 switch (keyinfo->alg) {
2643 case ALG_CCMP:
2644 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2645 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2646 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2647 break;
2648
2649 case ALG_TKIP:
2650#if 0
2651 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2652
2653 if (last_frag)
2654 memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2655 8);
2656 else
2657 memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2658#endif
2659 break;
2660
2661 case ALG_WEP:
2662 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2663 (ctl->key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2664
2665 if (keyinfo->keylen == 13)
2666 cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2667
2668 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2669
2670 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2671 "with key %d\n", ctl->key_idx);
2672 break;
2673
2674 case ALG_NONE:
2675 IWL_DEBUG_TX("Tx packet in the clear (encrypt requested).\n");
2676 break;
2677
2678 default:
2679 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2680 break;
2681 }
2682}
2683
2684/*
2685 * handle build REPLY_TX command notification.
2686 */
2687static void iwl_build_tx_cmd_basic(struct iwl_priv *priv,
2688 struct iwl_cmd *cmd,
2689 struct ieee80211_tx_control *ctrl,
2690 struct ieee80211_hdr *hdr,
2691 int is_unicast, u8 std_id)
2692{
2693 __le16 *qc;
2694 u16 fc = le16_to_cpu(hdr->frame_control);
2695 __le32 tx_flags = cmd->cmd.tx.tx_flags;
2696
2697 cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2698 if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
2699 tx_flags |= TX_CMD_FLG_ACK_MSK;
2700 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
2701 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2702 if (ieee80211_is_probe_response(fc) &&
2703 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2704 tx_flags |= TX_CMD_FLG_TSF_MSK;
2705 } else {
2706 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2707 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2708 }
2709
2710 cmd->cmd.tx.sta_id = std_id;
2711 if (ieee80211_get_morefrag(hdr))
2712 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2713
2714 qc = ieee80211_get_qos_ctrl(hdr);
2715 if (qc) {
2716 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
2717 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2718 } else
2719 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2720
2721 if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
2722 tx_flags |= TX_CMD_FLG_RTS_MSK;
2723 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2724 } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
2725 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2726 tx_flags |= TX_CMD_FLG_CTS_MSK;
2727 }
2728
2729 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2730 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2731
2732 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2733 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
2734 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
2735 (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
2736 cmd->cmd.tx.timeout.pm_frame_timeout =
2737 cpu_to_le16(3);
2738 else
2739 cmd->cmd.tx.timeout.pm_frame_timeout =
2740 cpu_to_le16(2);
2741 } else
2742 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2743
2744 cmd->cmd.tx.driver_txop = 0;
2745 cmd->cmd.tx.tx_flags = tx_flags;
2746 cmd->cmd.tx.next_frame_len = 0;
2747}
2748
2749static int iwl_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
2750{
2751 int sta_id;
2752 u16 fc = le16_to_cpu(hdr->frame_control);
0795af57 2753 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 2754
2755 /* If this frame is broadcast or not data then use the broadcast
2756 * station id */
2757 if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2758 is_multicast_ether_addr(hdr->addr1))
2759 return priv->hw_setting.bcast_sta_id;
2760
2761 switch (priv->iw_mode) {
2762
2763 /* If this frame is part of a BSS network (we're a station), then
2764 * we use the AP's station id */
2765 case IEEE80211_IF_TYPE_STA:
2766 return IWL_AP_ID;
2767
2768 /* If we are an AP, then find the station, or use BCAST */
2769 case IEEE80211_IF_TYPE_AP:
2770 sta_id = iwl_hw_find_station(priv, hdr->addr1);
2771 if (sta_id != IWL_INVALID_STATION)
2772 return sta_id;
2773 return priv->hw_setting.bcast_sta_id;
2774
2775 /* If this frame is part of a IBSS network, then we use the
2776 * target specific station id */
2777 case IEEE80211_IF_TYPE_IBSS:
2778 sta_id = iwl_hw_find_station(priv, hdr->addr1);
2779 if (sta_id != IWL_INVALID_STATION)
2780 return sta_id;
2781
2782 sta_id = iwl_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
2783
2784 if (sta_id != IWL_INVALID_STATION)
2785 return sta_id;
2786
0795af57 2787 IWL_DEBUG_DROP("Station %s not in station map. "
b481de9c 2788 "Defaulting to broadcast...\n",
0795af57 2789 print_mac(mac, hdr->addr1));
b481de9c
ZY		 2790 iwl_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2791 return priv->hw_setting.bcast_sta_id;
2792
2793 default:
2794 IWL_WARNING("Unkown mode of operation: %d", priv->iw_mode);
2795 return priv->hw_setting.bcast_sta_id;
2796 }
2797}
2798
2799/*
2800 * start REPLY_TX command process
2801 */
2802static int iwl_tx_skb(struct iwl_priv *priv,
2803 struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2804{
2805 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2806 struct iwl_tfd_frame *tfd;
2807 u32 *control_flags;
2808 int txq_id = ctl->queue;
2809 struct iwl_tx_queue *txq = NULL;
2810 struct iwl_queue *q = NULL;
2811 dma_addr_t phys_addr;
2812 dma_addr_t txcmd_phys;
2813 struct iwl_cmd *out_cmd = NULL;
2814 u16 len, idx, len_org;
2815 u8 id, hdr_len, unicast;
2816 u8 sta_id;
2817 u16 seq_number = 0;
2818 u16 fc;
2819 __le16 *qc;
2820 u8 wait_write_ptr = 0;
2821 unsigned long flags;
2822 int rc;
2823
2824 spin_lock_irqsave(&priv->lock, flags);
2825 if (iwl_is_rfkill(priv)) {
2826 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2827 goto drop_unlock;
2828 }
2829
2830 if (!priv->interface_id) {
2831 IWL_DEBUG_DROP("Dropping - !priv->interface_id\n");
2832 goto drop_unlock;
2833 }
2834
2835 if ((ctl->tx_rate & 0xFF) == IWL_INVALID_RATE) {
2836 IWL_ERROR("ERROR: No TX rate available.\n");
2837 goto drop_unlock;
2838 }
2839
2840 unicast = !is_multicast_ether_addr(hdr->addr1);
2841 id = 0;
2842
2843 fc = le16_to_cpu(hdr->frame_control);
2844
2845#ifdef CONFIG_IWLWIFI_DEBUG
2846 if (ieee80211_is_auth(fc))
2847 IWL_DEBUG_TX("Sending AUTH frame\n");
2848 else if (ieee80211_is_assoc_request(fc))
2849 IWL_DEBUG_TX("Sending ASSOC frame\n");
2850 else if (ieee80211_is_reassoc_request(fc))
2851 IWL_DEBUG_TX("Sending REASSOC frame\n");
2852#endif
2853
2854 if (!iwl_is_associated(priv) &&
2855 ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)) {
2856 IWL_DEBUG_DROP("Dropping - !iwl_is_associated\n");
2857 goto drop_unlock;
2858 }
2859
2860 spin_unlock_irqrestore(&priv->lock, flags);
2861
2862 hdr_len = ieee80211_get_hdrlen(fc);
2863 sta_id = iwl_get_sta_id(priv, hdr);
2864 if (sta_id == IWL_INVALID_STATION) {
0795af57
JP		 2865 DECLARE_MAC_BUF(mac);
2866
2867 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2868 print_mac(mac, hdr->addr1));
b481de9c
ZY		 2869 goto drop;
2870 }
2871
2872 IWL_DEBUG_RATE("station Id %d\n", sta_id);
2873
2874 qc = ieee80211_get_qos_ctrl(hdr);
2875 if (qc) {
2876 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2877 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2878 IEEE80211_SCTL_SEQ;
2879 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2880 (hdr->seq_ctrl &
2881 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2882 seq_number += 0x10;
2883#ifdef CONFIG_IWLWIFI_HT
2884#ifdef CONFIG_IWLWIFI_HT_AGG
2885 /* aggregation is on for this <sta,tid> */
2886 if (ctl->flags & IEEE80211_TXCTL_HT_MPDU_AGG)
2887 txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
2888#endif /* CONFIG_IWLWIFI_HT_AGG */
2889#endif /* CONFIG_IWLWIFI_HT */
2890 }
2891 txq = &priv->txq[txq_id];
2892 q = &txq->q;
2893
2894 spin_lock_irqsave(&priv->lock, flags);
2895
2896 tfd = &txq->bd[q->first_empty];
2897 memset(tfd, 0, sizeof(*tfd));
2898 control_flags = (u32 *) tfd;
2899 idx = get_cmd_index(q, q->first_empty, 0);
2900
2901 memset(&(txq->txb[q->first_empty]), 0, sizeof(struct iwl_tx_info));
2902 txq->txb[q->first_empty].skb[0] = skb;
2903 memcpy(&(txq->txb[q->first_empty].status.control),
2904 ctl, sizeof(struct ieee80211_tx_control));
2905 out_cmd = &txq->cmd[idx];
2906 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2907 memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2908 out_cmd->hdr.cmd = REPLY_TX;
2909 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2910 INDEX_TO_SEQ(q->first_empty)));
2911 /* copy frags header */
2912 memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2913
2914 /* hdr = (struct ieee80211_hdr *)out_cmd->cmd.tx.hdr; */
2915 len = priv->hw_setting.tx_cmd_len +
2916 sizeof(struct iwl_cmd_header) + hdr_len;
2917
2918 len_org = len;
2919 len = (len + 3) & ~3;
2920
2921 if (len_org != len)
2922 len_org = 1;
2923 else
2924 len_org = 0;
2925
2926 txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl_cmd) * idx +
2927 offsetof(struct iwl_cmd, hdr);
2928
2929 iwl_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2930
2931 if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
2932 iwl_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, 0);
2933
2934 /* 802.11 null functions have no payload... */
2935 len = skb->len - hdr_len;
2936 if (len) {
2937 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2938 len, PCI_DMA_TODEVICE);
2939 iwl_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2940 }
2941
2942 if (len_org)
2943 out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
2944
2945 len = (u16)skb->len;
2946 out_cmd->cmd.tx.len = cpu_to_le16(len);
2947
2948 /* TODO need this for burst mode later on */
2949 iwl_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
2950
2951 /* set is_hcca to 0; it probably will never be implemented */
2952 iwl_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
2953
2954 iwl4965_tx_cmd(priv, out_cmd, sta_id, txcmd_phys,
2955 hdr, hdr_len, ctl, NULL);
2956
2957 if (!ieee80211_get_morefrag(hdr)) {
2958 txq->need_update = 1;
2959 if (qc) {
2960 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2961 priv->stations[sta_id].tid[tid].seq_number = seq_number;
2962 }
2963 } else {
2964 wait_write_ptr = 1;
2965 txq->need_update = 0;
2966 }
2967
2968 iwl_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
2969 sizeof(out_cmd->cmd.tx));
2970
2971 iwl_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2972 ieee80211_get_hdrlen(fc));
2973
2974 iwl4965_tx_queue_update_wr_ptr(priv, txq, len);
2975
2976 q->first_empty = iwl_queue_inc_wrap(q->first_empty, q->n_bd);
2977 rc = iwl_tx_queue_update_write_ptr(priv, txq);
2978 spin_unlock_irqrestore(&priv->lock, flags);
2979
2980 if (rc)
2981 return rc;
2982
2983 if ((iwl_queue_space(q) < q->high_mark)
2984 && priv->mac80211_registered) {
2985 if (wait_write_ptr) {
2986 spin_lock_irqsave(&priv->lock, flags);
2987 txq->need_update = 1;
2988 iwl_tx_queue_update_write_ptr(priv, txq);
2989 spin_unlock_irqrestore(&priv->lock, flags);
2990 }
2991
2992 ieee80211_stop_queue(priv->hw, ctl->queue);
2993 }
2994
2995 return 0;
2996
2997drop_unlock:
2998 spin_unlock_irqrestore(&priv->lock, flags);
2999drop:
3000 return -1;
3001}
3002
3003static void iwl_set_rate(struct iwl_priv *priv)
3004{
3005 const struct ieee80211_hw_mode *hw = NULL;
3006 struct ieee80211_rate *rate;
3007 int i;
3008
3009 hw = iwl_get_hw_mode(priv, priv->phymode);
3010
3011 priv->active_rate = 0;
3012 priv->active_rate_basic = 0;
3013
3014 IWL_DEBUG_RATE("Setting rates for 802.11%c\n",
3015 hw->mode == MODE_IEEE80211A ?
3016 'a' : ((hw->mode == MODE_IEEE80211B) ? 'b' : 'g'));
3017
3018 for (i = 0; i < hw->num_rates; i++) {
3019 rate = &(hw->rates[i]);
3020 if ((rate->val < IWL_RATE_COUNT) &&
3021 (rate->flags & IEEE80211_RATE_SUPPORTED)) {
3022 IWL_DEBUG_RATE("Adding rate index %d (plcp %d)%s\n",
3023 rate->val, iwl_rates[rate->val].plcp,
3024 (rate->flags & IEEE80211_RATE_BASIC) ?
3025 "*" : "");
3026 priv->active_rate |= (1 << rate->val);
3027 if (rate->flags & IEEE80211_RATE_BASIC)
3028 priv->active_rate_basic |= (1 << rate->val);
3029 } else
3030 IWL_DEBUG_RATE("Not adding rate %d (plcp %d)\n",
3031 rate->val, iwl_rates[rate->val].plcp);
3032 }
3033
3034 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
3035 priv->active_rate, priv->active_rate_basic);
3036
3037 /*
3038 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
3039 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
3040 * OFDM
3041 */
3042 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
3043 priv->staging_rxon.cck_basic_rates =
3044 ((priv->active_rate_basic &
3045 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
3046 else
3047 priv->staging_rxon.cck_basic_rates =
3048 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
3049
3050 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
3051 priv->staging_rxon.ofdm_basic_rates =
3052 ((priv->active_rate_basic &
3053 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
3054 IWL_FIRST_OFDM_RATE) & 0xFF;
3055 else
3056 priv->staging_rxon.ofdm_basic_rates =
3057 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
3058}
3059
3060static void iwl_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
3061{
3062 unsigned long flags;
3063
3064 if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
3065 return;
3066
3067 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
3068 disable_radio ? "OFF" : "ON");
3069
3070 if (disable_radio) {
3071 iwl_scan_cancel(priv);
3072 /* FIXME: This is a workaround for AP */
3073 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3074 spin_lock_irqsave(&priv->lock, flags);
3075 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
3076 CSR_UCODE_SW_BIT_RFKILL);
3077 spin_unlock_irqrestore(&priv->lock, flags);
3078 iwl_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
3079 set_bit(STATUS_RF_KILL_SW, &priv->status);
3080 }
3081 return;
3082 }
3083
3084 spin_lock_irqsave(&priv->lock, flags);
3085 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3086
3087 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3088 spin_unlock_irqrestore(&priv->lock, flags);
3089
3090 /* wake up ucode */
3091 msleep(10);
3092
3093 spin_lock_irqsave(&priv->lock, flags);
3094 iwl_read32(priv, CSR_UCODE_DRV_GP1);
3095 if (!iwl_grab_restricted_access(priv))
3096 iwl_release_restricted_access(priv);
3097 spin_unlock_irqrestore(&priv->lock, flags);
3098
3099 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
3100 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3101 "disabled by HW switch\n");
3102 return;
3103 }
3104
3105 queue_work(priv->workqueue, &priv->restart);
3106 return;
3107}
3108
3109void iwl_set_decrypted_flag(struct iwl_priv *priv, struct sk_buff *skb,
3110 u32 decrypt_res, struct ieee80211_rx_status *stats)
3111{
3112 u16 fc =
3113 le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
3114
3115 if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
3116 return;
3117
3118 if (!(fc & IEEE80211_FCTL_PROTECTED))
3119 return;
3120
3121 IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
3122 switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
3123 case RX_RES_STATUS_SEC_TYPE_TKIP:
3124 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3125 RX_RES_STATUS_BAD_ICV_MIC)
3126 stats->flag |= RX_FLAG_MMIC_ERROR;
3127 case RX_RES_STATUS_SEC_TYPE_WEP:
3128 case RX_RES_STATUS_SEC_TYPE_CCMP:
3129 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3130 RX_RES_STATUS_DECRYPT_OK) {
3131 IWL_DEBUG_RX("hw decrypt successfully!!!\n");
3132 stats->flag |= RX_FLAG_DECRYPTED;
3133 }
3134 break;
3135
3136 default:
3137 break;
3138 }
3139}
3140
3141void iwl_handle_data_packet_monitor(struct iwl_priv *priv,
3142 struct iwl_rx_mem_buffer *rxb,
3143 void *data, short len,
3144 struct ieee80211_rx_status *stats,
3145 u16 phy_flags)
3146{
3147 struct iwl_rt_rx_hdr *iwl_rt;
3148
3149 /* First cache any information we need before we overwrite
3150 * the information provided in the skb from the hardware */
3151 s8 signal = stats->ssi;
3152 s8 noise = 0;
3153 int rate = stats->rate;
3154 u64 tsf = stats->mactime;
3155 __le16 phy_flags_hw = cpu_to_le16(phy_flags);
3156
3157 /* We received data from the HW, so stop the watchdog */
3158 if (len > IWL_RX_BUF_SIZE - sizeof(*iwl_rt)) {
3159 IWL_DEBUG_DROP("Dropping too large packet in monitor\n");
3160 return;
3161 }
3162
3163 /* copy the frame data to write after where the radiotap header goes */
3164 iwl_rt = (void *)rxb->skb->data;
3165 memmove(iwl_rt->payload, data, len);
3166
3167 iwl_rt->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION;
3168 iwl_rt->rt_hdr.it_pad = 0; /* always good to zero */
3169
3170 /* total header + data */
3171 iwl_rt->rt_hdr.it_len = cpu_to_le16(sizeof(*iwl_rt));
3172
3173 /* Set the size of the skb to the size of the frame */
3174 skb_put(rxb->skb, sizeof(*iwl_rt) + len);
3175
3176 /* Big bitfield of all the fields we provide in radiotap */
3177 iwl_rt->rt_hdr.it_present =
3178 cpu_to_le32((1 << IEEE80211_RADIOTAP_TSFT) |
3179 (1 << IEEE80211_RADIOTAP_FLAGS) |
3180 (1 << IEEE80211_RADIOTAP_RATE) |
3181 (1 << IEEE80211_RADIOTAP_CHANNEL) |
3182 (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL) |
3183 (1 << IEEE80211_RADIOTAP_DBM_ANTNOISE) |
3184 (1 << IEEE80211_RADIOTAP_ANTENNA));
3185
3186 /* Zero the flags, we'll add to them as we go */
3187 iwl_rt->rt_flags = 0;
3188
3189 iwl_rt->rt_tsf = cpu_to_le64(tsf);
3190
3191 /* Convert to dBm */
3192 iwl_rt->rt_dbmsignal = signal;
3193 iwl_rt->rt_dbmnoise = noise;
3194
3195 /* Convert the channel frequency and set the flags */
3196 iwl_rt->rt_channelMHz = cpu_to_le16(stats->freq);
3197 if (!(phy_flags_hw & RX_RES_PHY_FLAGS_BAND_24_MSK))
3198 iwl_rt->rt_chbitmask =
3199 cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_5GHZ));
3200 else if (phy_flags_hw & RX_RES_PHY_FLAGS_MOD_CCK_MSK)
3201 iwl_rt->rt_chbitmask =
3202 cpu_to_le16((IEEE80211_CHAN_CCK | IEEE80211_CHAN_2GHZ));
3203 else /* 802.11g */
3204 iwl_rt->rt_chbitmask =
3205 cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_2GHZ));
3206
3207 rate = iwl_rate_index_from_plcp(rate);
3208 if (rate == -1)
3209 iwl_rt->rt_rate = 0;
3210 else
3211 iwl_rt->rt_rate = iwl_rates[rate].ieee;
3212
3213 /* antenna number */
3214 iwl_rt->rt_antenna =
3215 le16_to_cpu(phy_flags_hw & RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4;
3216
3217 /* set the preamble flag if we have it */
3218 if (phy_flags_hw & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
3219 iwl_rt->rt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3220
3221 IWL_DEBUG_RX("Rx packet of %d bytes.\n", rxb->skb->len);
3222
3223 stats->flag |= RX_FLAG_RADIOTAP;
3224 ieee80211_rx_irqsafe(priv->hw, rxb->skb, stats);
3225 rxb->skb = NULL;
3226}
3227
3228
3229#define IWL_PACKET_RETRY_TIME HZ
3230
3231int is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
3232{
3233 u16 sc = le16_to_cpu(header->seq_ctrl);
3234 u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
3235 u16 frag = sc & IEEE80211_SCTL_FRAG;
3236 u16 *last_seq, *last_frag;
3237 unsigned long *last_time;
3238
3239 switch (priv->iw_mode) {
3240 case IEEE80211_IF_TYPE_IBSS:{
3241 struct list_head *p;
3242 struct iwl_ibss_seq *entry = NULL;
3243 u8 *mac = header->addr2;
3244 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
3245
3246 __list_for_each(p, &priv->ibss_mac_hash[index]) {
3247 entry =
3248 list_entry(p, struct iwl_ibss_seq, list);
3249 if (!compare_ether_addr(entry->mac, mac))
3250 break;
3251 }
3252 if (p == &priv->ibss_mac_hash[index]) {
3253 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
3254 if (!entry) {
3255 IWL_ERROR
3256 ("Cannot malloc new mac entry\n");
3257 return 0;
3258 }
3259 memcpy(entry->mac, mac, ETH_ALEN);
3260 entry->seq_num = seq;
3261 entry->frag_num = frag;
3262 entry->packet_time = jiffies;
3263 list_add(&entry->list,
3264 &priv->ibss_mac_hash[index]);
3265 return 0;
3266 }
3267 last_seq = &entry->seq_num;
3268 last_frag = &entry->frag_num;
3269 last_time = &entry->packet_time;
3270 break;
3271 }
3272 case IEEE80211_IF_TYPE_STA:
3273 last_seq = &priv->last_seq_num;
3274 last_frag = &priv->last_frag_num;
3275 last_time = &priv->last_packet_time;
3276 break;
3277 default:
3278 return 0;
3279 }
3280 if ((*last_seq == seq) &&
3281 time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
3282 if (*last_frag == frag)
3283 goto drop;
3284 if (*last_frag + 1 != frag)
3285 /* out-of-order fragment */
3286 goto drop;
3287 } else
3288 *last_seq = seq;
3289
3290 *last_frag = frag;
3291 *last_time = jiffies;
3292 return 0;
3293
3294 drop:
3295 return 1;
3296}
3297
3298#ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
3299
3300#include "iwl-spectrum.h"
3301
3302#define BEACON_TIME_MASK_LOW 0x00FFFFFF
3303#define BEACON_TIME_MASK_HIGH 0xFF000000
3304#define TIME_UNIT 1024
3305
3306/*
3307 * extended beacon time format
3308 * time in usec will be changed into a 32-bit value in 8:24 format
3309 * the high 1 byte is the beacon counts
3310 * the lower 3 bytes is the time in usec within one beacon interval
3311 */
3312
3313static u32 iwl_usecs_to_beacons(u32 usec, u32 beacon_interval)
3314{
3315 u32 quot;
3316 u32 rem;
3317 u32 interval = beacon_interval * 1024;
3318
3319 if (!interval || !usec)
3320 return 0;
3321
3322 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
3323 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
3324
3325 return (quot << 24) + rem;
3326}
3327
3328/* base is usually what we get from ucode with each received frame,
3329 * the same as HW timer counter counting down
3330 */
3331
3332static __le32 iwl_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
3333{
3334 u32 base_low = base & BEACON_TIME_MASK_LOW;
3335 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
3336 u32 interval = beacon_interval * TIME_UNIT;
3337 u32 res = (base & BEACON_TIME_MASK_HIGH) +
3338 (addon & BEACON_TIME_MASK_HIGH);
3339
3340 if (base_low > addon_low)
3341 res += base_low - addon_low;
3342 else if (base_low < addon_low) {
3343 res += interval + base_low - addon_low;
3344 res += (1 << 24);
3345 } else
3346 res += (1 << 24);
3347
3348 return cpu_to_le32(res);
3349}
3350
3351static int iwl_get_measurement(struct iwl_priv *priv,
3352 struct ieee80211_measurement_params *params,
3353 u8 type)
3354{
3355 struct iwl_spectrum_cmd spectrum;
3356 struct iwl_rx_packet *res;
3357 struct iwl_host_cmd cmd = {
3358 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
3359 .data = (void *)&spectrum,
3360 .meta.flags = CMD_WANT_SKB,
3361 };
3362 u32 add_time = le64_to_cpu(params->start_time);
3363 int rc;
3364 int spectrum_resp_status;
3365 int duration = le16_to_cpu(params->duration);
3366
3367 if (iwl_is_associated(priv))
3368 add_time =
3369 iwl_usecs_to_beacons(
3370 le64_to_cpu(params->start_time) - priv->last_tsf,
3371 le16_to_cpu(priv->rxon_timing.beacon_interval));
3372
3373 memset(&spectrum, 0, sizeof(spectrum));
3374
3375 spectrum.channel_count = cpu_to_le16(1);
3376 spectrum.flags =
3377 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
3378 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
3379 cmd.len = sizeof(spectrum);
3380 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
3381
3382 if (iwl_is_associated(priv))
3383 spectrum.start_time =
3384 iwl_add_beacon_time(priv->last_beacon_time,
3385 add_time,
3386 le16_to_cpu(priv->rxon_timing.beacon_interval));
3387 else
3388 spectrum.start_time = 0;
3389
3390 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
3391 spectrum.channels[0].channel = params->channel;
3392 spectrum.channels[0].type = type;
3393 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
3394 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
3395 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
3396
3397 rc = iwl_send_cmd_sync(priv, &cmd);
3398 if (rc)
3399 return rc;
3400
3401 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
3402 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
3403 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
3404 rc = -EIO;
3405 }
3406
3407 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
3408 switch (spectrum_resp_status) {
3409 case 0: /* Command will be handled */
3410 if (res->u.spectrum.id != 0xff) {
3411 IWL_DEBUG_INFO
3412 ("Replaced existing measurement: %d\n",
3413 res->u.spectrum.id);
3414 priv->measurement_status &= ~MEASUREMENT_READY;
3415 }
3416 priv->measurement_status |= MEASUREMENT_ACTIVE;
3417 rc = 0;
3418 break;
3419
3420 case 1: /* Command will not be handled */
3421 rc = -EAGAIN;
3422 break;
3423 }
3424
3425 dev_kfree_skb_any(cmd.meta.u.skb);
3426
3427 return rc;
3428}
3429#endif
3430
3431static void iwl_txstatus_to_ieee(struct iwl_priv *priv,
3432 struct iwl_tx_info *tx_sta)
3433{
3434
3435 tx_sta->status.ack_signal = 0;
3436 tx_sta->status.excessive_retries = 0;
3437 tx_sta->status.queue_length = 0;
3438 tx_sta->status.queue_number = 0;
3439
3440 if (in_interrupt())
3441 ieee80211_tx_status_irqsafe(priv->hw,
3442 tx_sta->skb[0], &(tx_sta->status));
3443 else
3444 ieee80211_tx_status(priv->hw,
3445 tx_sta->skb[0], &(tx_sta->status));
3446
3447 tx_sta->skb[0] = NULL;
3448}
3449
3450/**
3451 * iwl_tx_queue_reclaim - Reclaim Tx queue entries no more used by NIC.
3452 *
3453 * When FW advances 'R' index, all entries between old and
3454 * new 'R' index need to be reclaimed. As result, some free space
3455 * forms. If there is enough free space (> low mark), wake Tx queue.
3456 */
3457int iwl_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
3458{
3459 struct iwl_tx_queue *txq = &priv->txq[txq_id];
3460 struct iwl_queue *q = &txq->q;
3461 int nfreed = 0;
3462
3463 if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
3464 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3465 "is out of range [0-%d] %d %d.\n", txq_id,
3466 index, q->n_bd, q->first_empty, q->last_used);
3467 return 0;
3468 }
3469
3470 for (index = iwl_queue_inc_wrap(index, q->n_bd);
3471 q->last_used != index;
3472 q->last_used = iwl_queue_inc_wrap(q->last_used, q->n_bd)) {
3473 if (txq_id != IWL_CMD_QUEUE_NUM) {
3474 iwl_txstatus_to_ieee(priv,
3475 &(txq->txb[txq->q.last_used]));
3476 iwl_hw_txq_free_tfd(priv, txq);
3477 } else if (nfreed > 1) {
3478 IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
3479 q->first_empty, q->last_used);
3480 queue_work(priv->workqueue, &priv->restart);
3481 }
3482 nfreed++;
3483 }
3484
3485 if (iwl_queue_space(q) > q->low_mark && (txq_id >= 0) &&
3486 (txq_id != IWL_CMD_QUEUE_NUM) &&
3487 priv->mac80211_registered)
3488 ieee80211_wake_queue(priv->hw, txq_id);
3489
3490
3491 return nfreed;
3492}
3493
3494static int iwl_is_tx_success(u32 status)
3495{
3496 status &= TX_STATUS_MSK;
3497 return (status == TX_STATUS_SUCCESS)
3498 || (status == TX_STATUS_DIRECT_DONE);
3499}
3500
3501/******************************************************************************
3502 *
3503 * Generic RX handler implementations
3504 *
3505 ******************************************************************************/
3506#ifdef CONFIG_IWLWIFI_HT
3507#ifdef CONFIG_IWLWIFI_HT_AGG
3508
3509static inline int iwl_get_ra_sta_id(struct iwl_priv *priv,
3510 struct ieee80211_hdr *hdr)
3511{
3512 if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
3513 return IWL_AP_ID;
3514 else {
3515 u8 *da = ieee80211_get_DA(hdr);
3516 return iwl_hw_find_station(priv, da);
3517 }
3518}
3519
3520static struct ieee80211_hdr *iwl_tx_queue_get_hdr(
3521 struct iwl_priv *priv, int txq_id, int idx)
3522{
3523 if (priv->txq[txq_id].txb[idx].skb[0])
3524 return (struct ieee80211_hdr *)priv->txq[txq_id].
3525 txb[idx].skb[0]->data;
3526 return NULL;
3527}
3528
3529static inline u32 iwl_get_scd_ssn(struct iwl_tx_resp *tx_resp)
3530{
3531 __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
3532 tx_resp->frame_count);
3533 return le32_to_cpu(*scd_ssn) & MAX_SN;
3534
3535}
3536static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv,
3537 struct iwl_ht_agg *agg,
3538 struct iwl_tx_resp *tx_resp,
3539 u16 start_idx)
3540{
3541 u32 status;
3542 __le32 *frame_status = &tx_resp->status;
3543 struct ieee80211_tx_status *tx_status = NULL;
3544 struct ieee80211_hdr *hdr = NULL;
3545 int i, sh;
3546 int txq_id, idx;
3547 u16 seq;
3548
3549 if (agg->wait_for_ba)
3550 IWL_DEBUG_TX_REPLY("got tx repsons w/o back\n");
3551
3552 agg->frame_count = tx_resp->frame_count;
3553 agg->start_idx = start_idx;
3554 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3555 agg->bitmap0 = agg->bitmap1 = 0;
3556
3557 if (agg->frame_count == 1) {
3558 struct iwl_tx_queue *txq ;
3559 status = le32_to_cpu(frame_status[0]);
3560
3561 txq_id = agg->txq_id;
3562 txq = &priv->txq[txq_id];
3563 /* FIXME: code repetition */
3564 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d \n",
3565 agg->frame_count, agg->start_idx);
3566
3567 tx_status = &(priv->txq[txq_id].txb[txq->q.last_used].status);
3568 tx_status->retry_count = tx_resp->failure_frame;
3569 tx_status->queue_number = status & 0xff;
3570 tx_status->queue_length = tx_resp->bt_kill_count;
3571 tx_status->queue_length |= tx_resp->failure_rts;
3572
3573 tx_status->flags = iwl_is_tx_success(status)?
3574 IEEE80211_TX_STATUS_ACK : 0;
3575 tx_status->control.tx_rate =
3576 iwl_hw_get_rate_n_flags(tx_resp->rate_n_flags);
3577 /* FIXME: code repetition end */
3578
3579 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
3580 status & 0xff, tx_resp->failure_frame);
3581 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
3582 iwl_hw_get_rate_n_flags(tx_resp->rate_n_flags));
3583
3584 agg->wait_for_ba = 0;
3585 } else {
3586 u64 bitmap = 0;
3587 int start = agg->start_idx;
3588
3589 for (i = 0; i < agg->frame_count; i++) {
3590 u16 sc;
3591 status = le32_to_cpu(frame_status[i]);
3592 seq = status >> 16;
3593 idx = SEQ_TO_INDEX(seq);
3594 txq_id = SEQ_TO_QUEUE(seq);
3595
3596 if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
3597 AGG_TX_STATE_ABORT_MSK))
3598 continue;
3599
3600 IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
3601 agg->frame_count, txq_id, idx);
3602
3603 hdr = iwl_tx_queue_get_hdr(priv, txq_id, idx);
3604
3605 sc = le16_to_cpu(hdr->seq_ctrl);
3606 if (idx != (SEQ_TO_SN(sc) & 0xff)) {
3607 IWL_ERROR("BUG_ON idx doesn't match seq control"
3608 " idx=%d, seq_idx=%d, seq=%d\n",
3609 idx, SEQ_TO_SN(sc),
3610 hdr->seq_ctrl);
3611 return -1;
3612 }
3613
3614 IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
3615 i, idx, SEQ_TO_SN(sc));
3616
3617 sh = idx - start;
3618 if (sh > 64) {
3619 sh = (start - idx) + 0xff;
3620 bitmap = bitmap << sh;
3621 sh = 0;
3622 start = idx;
3623 } else if (sh < -64)
3624 sh = 0xff - (start - idx);
3625 else if (sh < 0) {
3626 sh = start - idx;
3627 start = idx;
3628 bitmap = bitmap << sh;
3629 sh = 0;
3630 }
3631 bitmap |= (1 << sh);
3632 IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
3633 start, (u32)(bitmap & 0xFFFFFFFF));
3634 }
3635
3636 agg->bitmap0 = bitmap & 0xFFFFFFFF;
3637 agg->bitmap1 = bitmap >> 32;
3638 agg->start_idx = start;
3639 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3640 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%x\n",
3641 agg->frame_count, agg->start_idx,
3642 agg->bitmap0);
3643
3644 if (bitmap)
3645 agg->wait_for_ba = 1;
3646 }
3647 return 0;
3648}
3649#endif
3650#endif
3651
3652static void iwl_rx_reply_tx(struct iwl_priv *priv,
3653 struct iwl_rx_mem_buffer *rxb)
3654{
3655 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3656 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3657 int txq_id = SEQ_TO_QUEUE(sequence);
3658 int index = SEQ_TO_INDEX(sequence);
3659 struct iwl_tx_queue *txq = &priv->txq[txq_id];
3660 struct ieee80211_tx_status *tx_status;
3661 struct iwl_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
3662 u32 status = le32_to_cpu(tx_resp->status);
3663#ifdef CONFIG_IWLWIFI_HT
3664#ifdef CONFIG_IWLWIFI_HT_AGG
3665 int tid, sta_id;
3666#endif
3667#endif
3668
3669 if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
3670 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3671 "is out of range [0-%d] %d %d\n", txq_id,
3672 index, txq->q.n_bd, txq->q.first_empty,
3673 txq->q.last_used);
3674 return;
3675 }
3676
3677#ifdef CONFIG_IWLWIFI_HT
3678#ifdef CONFIG_IWLWIFI_HT_AGG
3679 if (txq->sched_retry) {
3680 const u32 scd_ssn = iwl_get_scd_ssn(tx_resp);
3681 struct ieee80211_hdr *hdr =
3682 iwl_tx_queue_get_hdr(priv, txq_id, index);
3683 struct iwl_ht_agg *agg = NULL;
3684 __le16 *qc = ieee80211_get_qos_ctrl(hdr);
3685
3686 if (qc == NULL) {
3687 IWL_ERROR("BUG_ON qc is null!!!!\n");
3688 return;
3689 }
3690
3691 tid = le16_to_cpu(*qc) & 0xf;
3692
3693 sta_id = iwl_get_ra_sta_id(priv, hdr);
3694 if (unlikely(sta_id == IWL_INVALID_STATION)) {
3695 IWL_ERROR("Station not known for\n");
3696 return;
3697 }
3698
3699 agg = &priv->stations[sta_id].tid[tid].agg;
3700
3701 iwl4965_tx_status_reply_tx(priv, agg, tx_resp, index);
3702
3703 if ((tx_resp->frame_count == 1) &&
3704 !iwl_is_tx_success(status)) {
3705 /* TODO: send BAR */
3706 }
3707
3708 if ((txq->q.last_used != (scd_ssn & 0xff))) {
3709 index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
3710 IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
3711 "%d index %d\n", scd_ssn , index);
3712 iwl_tx_queue_reclaim(priv, txq_id, index);
3713 }
3714 } else {
3715#endif /* CONFIG_IWLWIFI_HT_AGG */
3716#endif /* CONFIG_IWLWIFI_HT */
3717 tx_status = &(txq->txb[txq->q.last_used].status);
3718
3719 tx_status->retry_count = tx_resp->failure_frame;
3720 tx_status->queue_number = status;
3721 tx_status->queue_length = tx_resp->bt_kill_count;
3722 tx_status->queue_length |= tx_resp->failure_rts;
3723
3724 tx_status->flags =
3725 iwl_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
3726
3727 tx_status->control.tx_rate =
3728 iwl_hw_get_rate_n_flags(tx_resp->rate_n_flags);
3729
3730 IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
3731 "retries %d\n", txq_id, iwl_get_tx_fail_reason(status),
3732 status, le32_to_cpu(tx_resp->rate_n_flags),
3733 tx_resp->failure_frame);
3734
3735 IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
3736 if (index != -1)
3737 iwl_tx_queue_reclaim(priv, txq_id, index);
3738#ifdef CONFIG_IWLWIFI_HT
3739#ifdef CONFIG_IWLWIFI_HT_AGG
3740 }
3741#endif /* CONFIG_IWLWIFI_HT_AGG */
3742#endif /* CONFIG_IWLWIFI_HT */
3743
3744 if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
3745 IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n");
3746}
3747
3748
3749static void iwl_rx_reply_alive(struct iwl_priv *priv,
3750 struct iwl_rx_mem_buffer *rxb)
3751{
3752 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3753 struct iwl_alive_resp *palive;
3754 struct delayed_work *pwork;
3755
3756 palive = &pkt->u.alive_frame;
3757
3758 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3759 "0x%01X 0x%01X\n",
3760 palive->is_valid, palive->ver_type,
3761 palive->ver_subtype);
3762
3763 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3764 IWL_DEBUG_INFO("Initialization Alive received.\n");
3765 memcpy(&priv->card_alive_init,
3766 &pkt->u.alive_frame,
3767 sizeof(struct iwl_init_alive_resp));
3768 pwork = &priv->init_alive_start;
3769 } else {
3770 IWL_DEBUG_INFO("Runtime Alive received.\n");
3771 memcpy(&priv->card_alive, &pkt->u.alive_frame,
3772 sizeof(struct iwl_alive_resp));
3773 pwork = &priv->alive_start;
3774 }
3775
3776 /* We delay the ALIVE response by 5ms to
3777 * give the HW RF Kill time to activate... */
3778 if (palive->is_valid == UCODE_VALID_OK)
3779 queue_delayed_work(priv->workqueue, pwork,
3780 msecs_to_jiffies(5));
3781 else
3782 IWL_WARNING("uCode did not respond OK.\n");
3783}
3784
3785static void iwl_rx_reply_add_sta(struct iwl_priv *priv,
3786 struct iwl_rx_mem_buffer *rxb)
3787{
3788 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3789
3790 IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3791 return;
3792}
3793
3794static void iwl_rx_reply_error(struct iwl_priv *priv,
3795 struct iwl_rx_mem_buffer *rxb)
3796{
3797 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3798
3799 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3800 "seq 0x%04X ser 0x%08X\n",
3801 le32_to_cpu(pkt->u.err_resp.error_type),
3802 get_cmd_string(pkt->u.err_resp.cmd_id),
3803 pkt->u.err_resp.cmd_id,
3804 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3805 le32_to_cpu(pkt->u.err_resp.error_info));
3806}
3807
3808#define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3809
3810static void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
3811{
3812 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3813 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
3814 struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
3815 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3816 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3817 rxon->channel = csa->channel;
3818 priv->staging_rxon.channel = csa->channel;
3819}
3820
3821static void iwl_rx_spectrum_measure_notif(struct iwl_priv *priv,
3822 struct iwl_rx_mem_buffer *rxb)
3823{
3824#ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
3825 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3826 struct iwl_spectrum_notification *report = &(pkt->u.spectrum_notif);
3827
3828 if (!report->state) {
3829 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3830 "Spectrum Measure Notification: Start\n");
3831 return;
3832 }
3833
3834 memcpy(&priv->measure_report, report, sizeof(*report));
3835 priv->measurement_status |= MEASUREMENT_READY;
3836#endif
3837}
3838
3839static void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
3840 struct iwl_rx_mem_buffer *rxb)
3841{
3842#ifdef CONFIG_IWLWIFI_DEBUG
3843 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3844 struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
3845 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3846 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3847#endif
3848}
3849
3850static void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
3851 struct iwl_rx_mem_buffer *rxb)
3852{
3853 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3854 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3855 "notification for %s:\n",
3856 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3857 iwl_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3858}
3859
3860static void iwl_bg_beacon_update(struct work_struct *work)
3861{
3862 struct iwl_priv *priv =
3863 container_of(work, struct iwl_priv, beacon_update);
3864 struct sk_buff *beacon;
3865
3866 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3867 beacon = ieee80211_beacon_get(priv->hw, priv->interface_id, NULL);
3868
3869 if (!beacon) {
3870 IWL_ERROR("update beacon failed\n");
3871 return;
3872 }
3873
3874 mutex_lock(&priv->mutex);
3875 /* new beacon skb is allocated every time; dispose previous.*/
3876 if (priv->ibss_beacon)
3877 dev_kfree_skb(priv->ibss_beacon);
3878
3879 priv->ibss_beacon = beacon;
3880 mutex_unlock(&priv->mutex);
3881
3882 iwl_send_beacon_cmd(priv);
3883}
3884
3885static void iwl_rx_beacon_notif(struct iwl_priv *priv,
3886 struct iwl_rx_mem_buffer *rxb)
3887{
3888#ifdef CONFIG_IWLWIFI_DEBUG
3889 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3890 struct iwl_beacon_notif *beacon = &(pkt->u.beacon_status);
3891 u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
3892
3893 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3894 "tsf %d %d rate %d\n",
3895 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3896 beacon->beacon_notify_hdr.failure_frame,
3897 le32_to_cpu(beacon->ibss_mgr_status),
3898 le32_to_cpu(beacon->high_tsf),
3899 le32_to_cpu(beacon->low_tsf), rate);
3900#endif
3901
3902 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3903 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3904 queue_work(priv->workqueue, &priv->beacon_update);
3905}
3906
3907/* Service response to REPLY_SCAN_CMD (0x80) */
3908static void iwl_rx_reply_scan(struct iwl_priv *priv,
3909 struct iwl_rx_mem_buffer *rxb)
3910{
3911#ifdef CONFIG_IWLWIFI_DEBUG
3912 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3913 struct iwl_scanreq_notification *notif =
3914 (struct iwl_scanreq_notification *)pkt->u.raw;
3915
3916 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3917#endif
3918}
3919
3920/* Service SCAN_START_NOTIFICATION (0x82) */
3921static void iwl_rx_scan_start_notif(struct iwl_priv *priv,
3922 struct iwl_rx_mem_buffer *rxb)
3923{
3924 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3925 struct iwl_scanstart_notification *notif =
3926 (struct iwl_scanstart_notification *)pkt->u.raw;
3927 priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3928 IWL_DEBUG_SCAN("Scan start: "
3929 "%d [802.11%s] "
3930 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3931 notif->channel,
3932 notif->band ? "bg" : "a",
3933 notif->tsf_high,
3934 notif->tsf_low, notif->status, notif->beacon_timer);
3935}
3936
3937/* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3938static void iwl_rx_scan_results_notif(struct iwl_priv *priv,
3939 struct iwl_rx_mem_buffer *rxb)
3940{
3941 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3942 struct iwl_scanresults_notification *notif =
3943 (struct iwl_scanresults_notification *)pkt->u.raw;
3944
3945 IWL_DEBUG_SCAN("Scan ch.res: "
3946 "%d [802.11%s] "
3947 "(TSF: 0x%08X:%08X) - %d "
3948 "elapsed=%lu usec (%dms since last)\n",
3949 notif->channel,
3950 notif->band ? "bg" : "a",
3951 le32_to_cpu(notif->tsf_high),
3952 le32_to_cpu(notif->tsf_low),
3953 le32_to_cpu(notif->statistics[0]),
3954 le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3955 jiffies_to_msecs(elapsed_jiffies
3956 (priv->last_scan_jiffies, jiffies)));
3957
3958 priv->last_scan_jiffies = jiffies;
3959}
3960
3961/* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3962static void iwl_rx_scan_complete_notif(struct iwl_priv *priv,
3963 struct iwl_rx_mem_buffer *rxb)
3964{
3965 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3966 struct iwl_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
3967
3968 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3969 scan_notif->scanned_channels,
3970 scan_notif->tsf_low,
3971 scan_notif->tsf_high, scan_notif->status);
3972
3973 /* The HW is no longer scanning */
3974 clear_bit(STATUS_SCAN_HW, &priv->status);
3975
3976 /* The scan completion notification came in, so kill that timer... */
3977 cancel_delayed_work(&priv->scan_check);
3978
3979 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3980 (priv->scan_bands == 2) ? "2.4" : "5.2",
3981 jiffies_to_msecs(elapsed_jiffies
3982 (priv->scan_pass_start, jiffies)));
3983
3984 /* Remove this scanned band from the list
3985 * of pending bands to scan */
3986 priv->scan_bands--;
3987
3988 /* If a request to abort was given, or the scan did not succeed
3989 * then we reset the scan state machine and terminate,
3990 * re-queuing another scan if one has been requested */
3991 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3992 IWL_DEBUG_INFO("Aborted scan completed.\n");
3993 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3994 } else {
3995 /* If there are more bands on this scan pass reschedule */
3996 if (priv->scan_bands > 0)
3997 goto reschedule;
3998 }
3999
4000 priv->last_scan_jiffies = jiffies;
4001 IWL_DEBUG_INFO("Setting scan to off\n");
4002
4003 clear_bit(STATUS_SCANNING, &priv->status);
4004
4005 IWL_DEBUG_INFO("Scan took %dms\n",
4006 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
4007
4008 queue_work(priv->workqueue, &priv->scan_completed);
4009
4010 return;
4011
4012reschedule:
4013 priv->scan_pass_start = jiffies;
4014 queue_work(priv->workqueue, &priv->request_scan);
4015}
4016
4017/* Handle notification from uCode that card's power state is changing
4018 * due to software, hardware, or critical temperature RFKILL */
4019static void iwl_rx_card_state_notif(struct iwl_priv *priv,
4020 struct iwl_rx_mem_buffer *rxb)
4021{
4022 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
4023 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
4024 unsigned long status = priv->status;
4025
4026 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
4027 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
4028 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
4029
4030 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
4031 RF_CARD_DISABLED)) {
4032
4033 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
4034 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
4035
4036 if (!iwl_grab_restricted_access(priv)) {
4037 iwl_write_restricted(
4038 priv, HBUS_TARG_MBX_C,
4039 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
4040
4041 iwl_release_restricted_access(priv);
4042 }
4043
4044 if (!(flags & RXON_CARD_DISABLED)) {
4045 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
4046 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
4047 if (!iwl_grab_restricted_access(priv)) {
4048 iwl_write_restricted(
4049 priv, HBUS_TARG_MBX_C,
4050 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
4051
4052 iwl_release_restricted_access(priv);
4053 }
4054 }
4055
4056 if (flags & RF_CARD_DISABLED) {
4057 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
4058 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
4059 iwl_read32(priv, CSR_UCODE_DRV_GP1);
4060 if (!iwl_grab_restricted_access(priv))
4061 iwl_release_restricted_access(priv);
4062 }
4063 }
4064
4065 if (flags & HW_CARD_DISABLED)
4066 set_bit(STATUS_RF_KILL_HW, &priv->status);
4067 else
4068 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4069
4070
4071 if (flags & SW_CARD_DISABLED)
4072 set_bit(STATUS_RF_KILL_SW, &priv->status);
4073 else
4074 clear_bit(STATUS_RF_KILL_SW, &priv->status);
4075
4076 if (!(flags & RXON_CARD_DISABLED))
4077 iwl_scan_cancel(priv);
4078
4079 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
4080 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
4081 (test_bit(STATUS_RF_KILL_SW, &status) !=
4082 test_bit(STATUS_RF_KILL_SW, &priv->status)))
4083 queue_work(priv->workqueue, &priv->rf_kill);
4084 else
4085 wake_up_interruptible(&priv->wait_command_queue);
4086}
4087
4088/**
4089 * iwl_setup_rx_handlers - Initialize Rx handler callbacks
4090 *
4091 * Setup the RX handlers for each of the reply types sent from the uCode
4092 * to the host.
4093 *
4094 * This function chains into the hardware specific files for them to setup
4095 * any hardware specific handlers as well.
4096 */
4097static void iwl_setup_rx_handlers(struct iwl_priv *priv)
4098{
4099 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
4100 priv->rx_handlers[REPLY_ADD_STA] = iwl_rx_reply_add_sta;
4101 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
4102 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
4103 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
4104 iwl_rx_spectrum_measure_notif;
4105 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
4106 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
4107 iwl_rx_pm_debug_statistics_notif;
4108 priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
4109
4110 /* NOTE: iwl_rx_statistics is different based on whether
4111 * the build is for the 3945 or the 4965. See the
4112 * corresponding implementation in iwl-XXXX.c
4113 *
4114 * The same handler is used for both the REPLY to a
4115 * discrete statistics request from the host as well as
4116 * for the periodic statistics notification from the uCode
4117 */
4118 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_hw_rx_statistics;
4119 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_hw_rx_statistics;
4120
4121 priv->rx_handlers[REPLY_SCAN_CMD] = iwl_rx_reply_scan;
4122 priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl_rx_scan_start_notif;
4123 priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
4124 iwl_rx_scan_results_notif;
4125 priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
4126 iwl_rx_scan_complete_notif;
4127 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
4128 priv->rx_handlers[REPLY_TX] = iwl_rx_reply_tx;
4129
4130 /* Setup hardware specific Rx handlers */
4131 iwl_hw_rx_handler_setup(priv);
4132}
4133
4134/**
4135 * iwl_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
4136 * @rxb: Rx buffer to reclaim
4137 *
4138 * If an Rx buffer has an async callback associated with it the callback
4139 * will be executed. The attached skb (if present) will only be freed
4140 * if the callback returns 1
4141 */
4142static void iwl_tx_cmd_complete(struct iwl_priv *priv,
4143 struct iwl_rx_mem_buffer *rxb)
4144{
4145 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
4146 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
4147 int txq_id = SEQ_TO_QUEUE(sequence);
4148 int index = SEQ_TO_INDEX(sequence);
4149 int huge = sequence & SEQ_HUGE_FRAME;
4150 int cmd_index;
4151 struct iwl_cmd *cmd;
4152
4153 /* If a Tx command is being handled and it isn't in the actual
4154 * command queue then there a command routing bug has been introduced
4155 * in the queue management code. */
4156 if (txq_id != IWL_CMD_QUEUE_NUM)
4157 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
4158 txq_id, pkt->hdr.cmd);
4159 BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
4160
4161 cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
4162 cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
4163
4164 /* Input error checking is done when commands are added to queue. */
4165 if (cmd->meta.flags & CMD_WANT_SKB) {
4166 cmd->meta.source->u.skb = rxb->skb;
4167 rxb->skb = NULL;
4168 } else if (cmd->meta.u.callback &&
4169 !cmd->meta.u.callback(priv, cmd, rxb->skb))
4170 rxb->skb = NULL;
4171
4172 iwl_tx_queue_reclaim(priv, txq_id, index);
4173
4174 if (!(cmd->meta.flags & CMD_ASYNC)) {
4175 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4176 wake_up_interruptible(&priv->wait_command_queue);
4177 }
4178}
4179
4180/************************** RX-FUNCTIONS ****************************/
4181/*
4182 * Rx theory of operation
4183 *
4184 * The host allocates 32 DMA target addresses and passes the host address
4185 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
4186 * 0 to 31
4187 *
4188 * Rx Queue Indexes
4189 * The host/firmware share two index registers for managing the Rx buffers.
4190 *
4191 * The READ index maps to the first position that the firmware may be writing
4192 * to -- the driver can read up to (but not including) this position and get
4193 * good data.
4194 * The READ index is managed by the firmware once the card is enabled.
4195 *
4196 * The WRITE index maps to the last position the driver has read from -- the
4197 * position preceding WRITE is the last slot the firmware can place a packet.
4198 *
4199 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
4200 * WRITE = READ.
4201 *
4202 * During initialization the host sets up the READ queue position to the first
4203 * INDEX position, and WRITE to the last (READ - 1 wrapped)
4204 *
4205 * When the firmware places a packet in a buffer it will advance the READ index
4206 * and fire the RX interrupt. The driver can then query the READ index and
4207 * process as many packets as possible, moving the WRITE index forward as it
4208 * resets the Rx queue buffers with new memory.
4209 *
4210 * The management in the driver is as follows:
4211 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
4212 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
4213 * to replensish the iwl->rxq->rx_free.
4214 * + In iwl_rx_replenish (scheduled) if 'processed' != 'read' then the
4215 * iwl->rxq is replenished and the READ INDEX is updated (updating the
4216 * 'processed' and 'read' driver indexes as well)
4217 * + A received packet is processed and handed to the kernel network stack,
4218 * detached from the iwl->rxq. The driver 'processed' index is updated.
4219 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
4220 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
4221 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
4222 * were enough free buffers and RX_STALLED is set it is cleared.
4223 *
4224 *
4225 * Driver sequence:
4226 *
4227 * iwl_rx_queue_alloc() Allocates rx_free
4228 * iwl_rx_replenish() Replenishes rx_free list from rx_used, and calls
4229 * iwl_rx_queue_restock
4230 * iwl_rx_queue_restock() Moves available buffers from rx_free into Rx
4231 * queue, updates firmware pointers, and updates
4232 * the WRITE index. If insufficient rx_free buffers
4233 * are available, schedules iwl_rx_replenish
4234 *
4235 * -- enable interrupts --
4236 * ISR - iwl_rx() Detach iwl_rx_mem_buffers from pool up to the
4237 * READ INDEX, detaching the SKB from the pool.
4238 * Moves the packet buffer from queue to rx_used.
4239 * Calls iwl_rx_queue_restock to refill any empty
4240 * slots.
4241 * ...
4242 *
4243 */
4244
4245/**
4246 * iwl_rx_queue_space - Return number of free slots available in queue.
4247 */
4248static int iwl_rx_queue_space(const struct iwl_rx_queue *q)
4249{
4250 int s = q->read - q->write;
4251 if (s <= 0)
4252 s += RX_QUEUE_SIZE;
4253 /* keep some buffer to not confuse full and empty queue */
4254 s -= 2;
4255 if (s < 0)
4256 s = 0;
4257 return s;
4258}
4259
4260/**
4261 * iwl_rx_queue_update_write_ptr - Update the write pointer for the RX queue
4262 *
4263 * NOTE: This function has 3945 and 4965 specific code sections
4264 * but is declared in base due to the majority of the
4265 * implementation being the same (only a numeric constant is
4266 * different)
4267 *
4268 */
4269int iwl_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl_rx_queue *q)
4270{
4271 u32 reg = 0;
4272 int rc = 0;
4273 unsigned long flags;
4274
4275 spin_lock_irqsave(&q->lock, flags);
4276
4277 if (q->need_update == 0)
4278 goto exit_unlock;
4279
4280 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4281 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
4282
4283 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4284 iwl_set_bit(priv, CSR_GP_CNTRL,
4285 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4286 goto exit_unlock;
4287 }
4288
4289 rc = iwl_grab_restricted_access(priv);
4290 if (rc)
4291 goto exit_unlock;
4292
4293 iwl_write_restricted(priv, FH_RSCSR_CHNL0_WPTR,
4294 q->write & ~0x7);
4295 iwl_release_restricted_access(priv);
4296 } else
4297 iwl_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
4298
4299
4300 q->need_update = 0;
4301
4302 exit_unlock:
4303 spin_unlock_irqrestore(&q->lock, flags);
4304 return rc;
4305}
4306
4307/**
4308 * iwl_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer pointer.
4309 *
4310 * NOTE: This function has 3945 and 4965 specific code paths in it.
4311 */
4312static inline __le32 iwl_dma_addr2rbd_ptr(struct iwl_priv *priv,
4313 dma_addr_t dma_addr)
4314{
4315 return cpu_to_le32((u32)(dma_addr >> 8));
4316}
4317
4318
4319/**
4320 * iwl_rx_queue_restock - refill RX queue from pre-allocated pool
4321 *
4322 * If there are slots in the RX queue that need to be restocked,
4323 * and we have free pre-allocated buffers, fill the ranks as much
4324 * as we can pulling from rx_free.
4325 *
4326 * This moves the 'write' index forward to catch up with 'processed', and
4327 * also updates the memory address in the firmware to reference the new
4328 * target buffer.
4329 */
4330int iwl_rx_queue_restock(struct iwl_priv *priv)
4331{
4332 struct iwl_rx_queue *rxq = &priv->rxq;
4333 struct list_head *element;
4334 struct iwl_rx_mem_buffer *rxb;
4335 unsigned long flags;
4336 int write, rc;
4337
4338 spin_lock_irqsave(&rxq->lock, flags);
4339 write = rxq->write & ~0x7;
4340 while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
4341 element = rxq->rx_free.next;
4342 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
4343 list_del(element);
4344 rxq->bd[rxq->write] = iwl_dma_addr2rbd_ptr(priv, rxb->dma_addr);
4345 rxq->queue[rxq->write] = rxb;
4346 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
4347 rxq->free_count--;
4348 }
4349 spin_unlock_irqrestore(&rxq->lock, flags);
4350 /* If the pre-allocated buffer pool is dropping low, schedule to
4351 * refill it */
4352 if (rxq->free_count <= RX_LOW_WATERMARK)
4353 queue_work(priv->workqueue, &priv->rx_replenish);
4354
4355
4356 /* If we've added more space for the firmware to place data, tell it */
4357 if ((write != (rxq->write & ~0x7))
4358 || (abs(rxq->write - rxq->read) > 7)) {
4359 spin_lock_irqsave(&rxq->lock, flags);
4360 rxq->need_update = 1;
4361 spin_unlock_irqrestore(&rxq->lock, flags);
4362 rc = iwl_rx_queue_update_write_ptr(priv, rxq);
4363 if (rc)
4364 return rc;
4365 }
4366
4367 return 0;
4368}
4369
4370/**
4371 * iwl_rx_replensih - Move all used packet from rx_used to rx_free
4372 *
4373 * When moving to rx_free an SKB is allocated for the slot.
4374 *
4375 * Also restock the Rx queue via iwl_rx_queue_restock.
4376 * This is called as a scheduled work item (except for during intialization)
4377 */
4378void iwl_rx_replenish(void *data)
4379{
4380 struct iwl_priv *priv = data;
4381 struct iwl_rx_queue *rxq = &priv->rxq;
4382 struct list_head *element;
4383 struct iwl_rx_mem_buffer *rxb;
4384 unsigned long flags;
4385 spin_lock_irqsave(&rxq->lock, flags);
4386 while (!list_empty(&rxq->rx_used)) {
4387 element = rxq->rx_used.next;
4388 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
4389 rxb->skb =
4390 alloc_skb(IWL_RX_BUF_SIZE, __GFP_NOWARN | GFP_ATOMIC);
4391 if (!rxb->skb) {
4392 if (net_ratelimit())
4393 printk(KERN_CRIT DRV_NAME
4394 ": Can not allocate SKB buffers\n");
4395 /* We don't reschedule replenish work here -- we will
4396 * call the restock method and if it still needs
4397 * more buffers it will schedule replenish */
4398 break;
4399 }
4400 priv->alloc_rxb_skb++;
4401 list_del(element);
4402 rxb->dma_addr =
4403 pci_map_single(priv->pci_dev, rxb->skb->data,
4404 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4405 list_add_tail(&rxb->list, &rxq->rx_free);
4406 rxq->free_count++;
4407 }
4408 spin_unlock_irqrestore(&rxq->lock, flags);
4409
4410 spin_lock_irqsave(&priv->lock, flags);
4411 iwl_rx_queue_restock(priv);
4412 spin_unlock_irqrestore(&priv->lock, flags);
4413}
4414
4415/* Assumes that the skb field of the buffers in 'pool' is kept accurate.
4416 * If an SKB has been detached, the POOL needs to have it's SKB set to NULL
4417 * This free routine walks the list of POOL entries and if SKB is set to
4418 * non NULL it is unmapped and freed
4419 */
4420void iwl_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
4421{
4422 int i;
4423 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
4424 if (rxq->pool[i].skb != NULL) {
4425 pci_unmap_single(priv->pci_dev,
4426 rxq->pool[i].dma_addr,
4427 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4428 dev_kfree_skb(rxq->pool[i].skb);
4429 }
4430 }
4431
4432 pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
4433 rxq->dma_addr);
4434 rxq->bd = NULL;
4435}
4436
4437int iwl_rx_queue_alloc(struct iwl_priv *priv)
4438{
4439 struct iwl_rx_queue *rxq = &priv->rxq;
4440 struct pci_dev *dev = priv->pci_dev;
4441 int i;
4442
4443 spin_lock_init(&rxq->lock);
4444 INIT_LIST_HEAD(&rxq->rx_free);
4445 INIT_LIST_HEAD(&rxq->rx_used);
4446 rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
4447 if (!rxq->bd)
4448 return -ENOMEM;
4449 /* Fill the rx_used queue with _all_ of the Rx buffers */
4450 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
4451 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4452 /* Set us so that we have processed and used all buffers, but have
4453 * not restocked the Rx queue with fresh buffers */
4454 rxq->read = rxq->write = 0;
4455 rxq->free_count = 0;
4456 rxq->need_update = 0;
4457 return 0;
4458}
4459
4460void iwl_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
4461{
4462 unsigned long flags;
4463 int i;
4464 spin_lock_irqsave(&rxq->lock, flags);
4465 INIT_LIST_HEAD(&rxq->rx_free);
4466 INIT_LIST_HEAD(&rxq->rx_used);
4467 /* Fill the rx_used queue with _all_ of the Rx buffers */
4468 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
4469 /* In the reset function, these buffers may have been allocated
4470 * to an SKB, so we need to unmap and free potential storage */
4471 if (rxq->pool[i].skb != NULL) {
4472 pci_unmap_single(priv->pci_dev,
4473 rxq->pool[i].dma_addr,
4474 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4475 priv->alloc_rxb_skb--;
4476 dev_kfree_skb(rxq->pool[i].skb);
4477 rxq->pool[i].skb = NULL;
4478 }
4479 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4480 }
4481
4482 /* Set us so that we have processed and used all buffers, but have
4483 * not restocked the Rx queue with fresh buffers */
4484 rxq->read = rxq->write = 0;
4485 rxq->free_count = 0;
4486 spin_unlock_irqrestore(&rxq->lock, flags);
4487}
4488
4489/* Convert linear signal-to-noise ratio into dB */
4490static u8 ratio2dB[100] = {
4491/* 0 1 2 3 4 5 6 7 8 9 */
4492 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
4493 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
4494 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
4495 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
4496 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
4497 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
4498 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
4499 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
4500 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
4501 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
4502};
4503
4504/* Calculates a relative dB value from a ratio of linear
4505 * (i.e. not dB) signal levels.
4506 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4507int iwl_calc_db_from_ratio(int sig_ratio)
4508{
4509 /* Anything above 1000:1 just report as 60 dB */
4510 if (sig_ratio > 1000)
4511 return 60;
4512
4513 /* Above 100:1, divide by 10 and use table,
4514 * add 20 dB to make up for divide by 10 */
4515 if (sig_ratio > 100)
4516 return (20 + (int)ratio2dB[sig_ratio/10]);
4517
4518 /* We shouldn't see this */
4519 if (sig_ratio < 1)
4520 return 0;
4521
4522 /* Use table for ratios 1:1 - 99:1 */
4523 return (int)ratio2dB[sig_ratio];
4524}
4525
4526#define PERFECT_RSSI (-20) /* dBm */
4527#define WORST_RSSI (-95) /* dBm */
4528#define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4529
4530/* Calculate an indication of rx signal quality (a percentage, not dBm!).
4531 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4532 * about formulas used below. */
4533int iwl_calc_sig_qual(int rssi_dbm, int noise_dbm)
4534{
4535 int sig_qual;
4536 int degradation = PERFECT_RSSI - rssi_dbm;
4537
4538 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
4539 * as indicator; formula is (signal dbm - noise dbm).
4540 * SNR at or above 40 is a great signal (100%).
4541 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4542 * Weakest usable signal is usually 10 - 15 dB SNR. */
4543 if (noise_dbm) {
4544 if (rssi_dbm - noise_dbm >= 40)
4545 return 100;
4546 else if (rssi_dbm < noise_dbm)
4547 return 0;
4548 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
4549
4550 /* Else use just the signal level.
4551 * This formula is a least squares fit of data points collected and
4552 * compared with a reference system that had a percentage (%) display
4553 * for signal quality. */
4554 } else
4555 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
4556 (15 * RSSI_RANGE + 62 * degradation)) /
4557 (RSSI_RANGE * RSSI_RANGE);
4558
4559 if (sig_qual > 100)
4560 sig_qual = 100;
4561 else if (sig_qual < 1)
4562 sig_qual = 0;
4563
4564 return sig_qual;
4565}
4566
4567/**
4568 * iwl_rx_handle - Main entry function for receiving responses from the uCode
4569 *
4570 * Uses the priv->rx_handlers callback function array to invoke
4571 * the appropriate handlers, including command responses,
4572 * frame-received notifications, and other notifications.
4573 */
4574static void iwl_rx_handle(struct iwl_priv *priv)
4575{
4576 struct iwl_rx_mem_buffer *rxb;
4577 struct iwl_rx_packet *pkt;
4578 struct iwl_rx_queue *rxq = &priv->rxq;
4579 u32 r, i;
4580 int reclaim;
4581 unsigned long flags;
4582
4583 r = iwl_hw_get_rx_read(priv);
4584 i = rxq->read;
4585
4586 /* Rx interrupt, but nothing sent from uCode */
4587 if (i == r)
4588 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
4589
4590 while (i != r) {
4591 rxb = rxq->queue[i];
4592
4593 /* If an RXB doesn't have a queue slot associated with it
4594 * then a bug has been introduced in the queue refilling
4595 * routines -- catch it here */
4596 BUG_ON(rxb == NULL);
4597
4598 rxq->queue[i] = NULL;
4599
4600 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
4601 IWL_RX_BUF_SIZE,
4602 PCI_DMA_FROMDEVICE);
4603 pkt = (struct iwl_rx_packet *)rxb->skb->data;
4604
4605 /* Reclaim a command buffer only if this packet is a response
4606 * to a (driver-originated) command.
4607 * If the packet (e.g. Rx frame) originated from uCode,
4608 * there is no command buffer to reclaim.
4609 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4610 * but apparently a few don't get set; catch them here. */
4611 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
4612 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
4613 (pkt->hdr.cmd != REPLY_4965_RX) &&
4614 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
4615 (pkt->hdr.cmd != REPLY_TX);
4616
4617 /* Based on type of command response or notification,
4618 * handle those that need handling via function in
4619 * rx_handlers table. See iwl_setup_rx_handlers() */
4620 if (priv->rx_handlers[pkt->hdr.cmd]) {
4621 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4622 "r = %d, i = %d, %s, 0x%02x\n", r, i,
4623 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
4624 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
4625 } else {
4626 /* No handling needed */
4627 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4628 "r %d i %d No handler needed for %s, 0x%02x\n",
4629 r, i, get_cmd_string(pkt->hdr.cmd),
4630 pkt->hdr.cmd);
4631 }
4632
4633 if (reclaim) {
4634 /* Invoke any callbacks, transfer the skb to caller,
4635 * and fire off the (possibly) blocking iwl_send_cmd()
4636 * as we reclaim the driver command queue */
4637 if (rxb && rxb->skb)
4638 iwl_tx_cmd_complete(priv, rxb);
4639 else
4640 IWL_WARNING("Claim null rxb?\n");
4641 }
4642
4643 /* For now we just don't re-use anything. We can tweak this
4644 * later to try and re-use notification packets and SKBs that
4645 * fail to Rx correctly */
4646 if (rxb->skb != NULL) {
4647 priv->alloc_rxb_skb--;
4648 dev_kfree_skb_any(rxb->skb);
4649 rxb->skb = NULL;
4650 }
4651
4652 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
4653 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4654 spin_lock_irqsave(&rxq->lock, flags);
4655 list_add_tail(&rxb->list, &priv->rxq.rx_used);
4656 spin_unlock_irqrestore(&rxq->lock, flags);
4657 i = (i + 1) & RX_QUEUE_MASK;
4658 }
4659
4660 /* Backtrack one entry */
4661 priv->rxq.read = i;
4662 iwl_rx_queue_restock(priv);
4663}
4664
4665int iwl_tx_queue_update_write_ptr(struct iwl_priv *priv,
4666 struct iwl_tx_queue *txq)
4667{
4668 u32 reg = 0;
4669 int rc = 0;
4670 int txq_id = txq->q.id;
4671
4672 if (txq->need_update == 0)
4673 return rc;
4674
4675 /* if we're trying to save power */
4676 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4677 /* wake up nic if it's powered down ...
4678 * uCode will wake up, and interrupt us again, so next
4679 * time we'll skip this part. */
4680 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
4681
4682 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4683 IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4684 iwl_set_bit(priv, CSR_GP_CNTRL,
4685 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4686 return rc;
4687 }
4688
4689 /* restore this queue's parameters in nic hardware. */
4690 rc = iwl_grab_restricted_access(priv);
4691 if (rc)
4692 return rc;
4693 iwl_write_restricted(priv, HBUS_TARG_WRPTR,
4694 txq->q.first_empty | (txq_id << 8));
4695 iwl_release_restricted_access(priv);
4696
4697 /* else not in power-save mode, uCode will never sleep when we're
4698 * trying to tx (during RFKILL, we're not trying to tx). */
4699 } else
4700 iwl_write32(priv, HBUS_TARG_WRPTR,
4701 txq->q.first_empty | (txq_id << 8));
4702
4703 txq->need_update = 0;
4704
4705 return rc;
4706}
4707
4708#ifdef CONFIG_IWLWIFI_DEBUG
4709static void iwl_print_rx_config_cmd(struct iwl_rxon_cmd *rxon)
4710{
0795af57
JP		 4711 DECLARE_MAC_BUF(mac);
4712
b481de9c
ZY		 4713 IWL_DEBUG_RADIO("RX CONFIG:\n");
4714 iwl_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4715 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4716 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4717 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4718 le32_to_cpu(rxon->filter_flags));
4719 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4720 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4721 rxon->ofdm_basic_rates);
4722 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
0795af57
JP		 4723 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4724 print_mac(mac, rxon->node_addr));
4725 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4726 print_mac(mac, rxon->bssid_addr));
b481de9c
ZY		 4727 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4728}
4729#endif
4730
4731static void iwl_enable_interrupts(struct iwl_priv *priv)
4732{
4733 IWL_DEBUG_ISR("Enabling interrupts\n");
4734 set_bit(STATUS_INT_ENABLED, &priv->status);
4735 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4736}
4737
4738static inline void iwl_disable_interrupts(struct iwl_priv *priv)
4739{
4740 clear_bit(STATUS_INT_ENABLED, &priv->status);
4741
4742 /* disable interrupts from uCode/NIC to host */
4743 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
4744
4745 /* acknowledge/clear/reset any interrupts still pending
4746 * from uCode or flow handler (Rx/Tx DMA) */
4747 iwl_write32(priv, CSR_INT, 0xffffffff);
4748 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4749 IWL_DEBUG_ISR("Disabled interrupts\n");
4750}
4751
4752static const char *desc_lookup(int i)
4753{
4754 switch (i) {
4755 case 1:
4756 return "FAIL";
4757 case 2:
4758 return "BAD_PARAM";
4759 case 3:
4760 return "BAD_CHECKSUM";
4761 case 4:
4762 return "NMI_INTERRUPT";
4763 case 5:
4764 return "SYSASSERT";
4765 case 6:
4766 return "FATAL_ERROR";
4767 }
4768
4769 return "UNKNOWN";
4770}
4771
4772#define ERROR_START_OFFSET (1 * sizeof(u32))
4773#define ERROR_ELEM_SIZE (7 * sizeof(u32))
4774
4775static void iwl_dump_nic_error_log(struct iwl_priv *priv)
4776{
4777 u32 data2, line;
4778 u32 desc, time, count, base, data1;
4779 u32 blink1, blink2, ilink1, ilink2;
4780 int rc;
4781
4782 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4783
4784 if (!iwl_hw_valid_rtc_data_addr(base)) {
4785 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4786 return;
4787 }
4788
4789 rc = iwl_grab_restricted_access(priv);
4790 if (rc) {
4791 IWL_WARNING("Can not read from adapter at this time.\n");
4792 return;
4793 }
4794
4795 count = iwl_read_restricted_mem(priv, base);
4796
4797 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4798 IWL_ERROR("Start IWL Error Log Dump:\n");
4799 IWL_ERROR("Status: 0x%08lX, Config: %08X count: %d\n",
4800 priv->status, priv->config, count);
4801 }
4802
4803 desc = iwl_read_restricted_mem(priv, base + 1 * sizeof(u32));
4804 blink1 = iwl_read_restricted_mem(priv, base + 3 * sizeof(u32));
4805 blink2 = iwl_read_restricted_mem(priv, base + 4 * sizeof(u32));
4806 ilink1 = iwl_read_restricted_mem(priv, base + 5 * sizeof(u32));
4807 ilink2 = iwl_read_restricted_mem(priv, base + 6 * sizeof(u32));
4808 data1 = iwl_read_restricted_mem(priv, base + 7 * sizeof(u32));
4809 data2 = iwl_read_restricted_mem(priv, base + 8 * sizeof(u32));
4810 line = iwl_read_restricted_mem(priv, base + 9 * sizeof(u32));
4811 time = iwl_read_restricted_mem(priv, base + 11 * sizeof(u32));
4812
4813 IWL_ERROR("Desc Time "
4814 "data1 data2 line\n");
4815 IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
4816 desc_lookup(desc), desc, time, data1, data2, line);
4817 IWL_ERROR("blink1 blink2 ilink1 ilink2\n");
4818 IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
4819 ilink1, ilink2);
4820
4821 iwl_release_restricted_access(priv);
4822}
4823
4824#define EVENT_START_OFFSET (4 * sizeof(u32))
4825
4826/**
4827 * iwl_print_event_log - Dump error event log to syslog
4828 *
4829 * NOTE: Must be called with iwl_grab_restricted_access() already obtained!
4830 */
4831static void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
4832 u32 num_events, u32 mode)
4833{
4834 u32 i;
4835 u32 base; /* SRAM byte address of event log header */
4836 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4837 u32 ptr; /* SRAM byte address of log data */
4838 u32 ev, time, data; /* event log data */
4839
4840 if (num_events == 0)
4841 return;
4842
4843 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4844
4845 if (mode == 0)
4846 event_size = 2 * sizeof(u32);
4847 else
4848 event_size = 3 * sizeof(u32);
4849
4850 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4851
4852 /* "time" is actually "data" for mode 0 (no timestamp).
4853 * place event id # at far right for easier visual parsing. */
4854 for (i = 0; i < num_events; i++) {
4855 ev = iwl_read_restricted_mem(priv, ptr);
4856 ptr += sizeof(u32);
4857 time = iwl_read_restricted_mem(priv, ptr);
4858 ptr += sizeof(u32);
4859 if (mode == 0)
4860 IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4861 else {
4862 data = iwl_read_restricted_mem(priv, ptr);
4863 ptr += sizeof(u32);
4864 IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4865 }
4866 }
4867}
4868
4869static void iwl_dump_nic_event_log(struct iwl_priv *priv)
4870{
4871 int rc;
4872 u32 base; /* SRAM byte address of event log header */
4873 u32 capacity; /* event log capacity in # entries */
4874 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
4875 u32 num_wraps; /* # times uCode wrapped to top of log */
4876 u32 next_entry; /* index of next entry to be written by uCode */
4877 u32 size; /* # entries that we'll print */
4878
4879 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4880 if (!iwl_hw_valid_rtc_data_addr(base)) {
4881 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4882 return;
4883 }
4884
4885 rc = iwl_grab_restricted_access(priv);
4886 if (rc) {
4887 IWL_WARNING("Can not read from adapter at this time.\n");
4888 return;
4889 }
4890
4891 /* event log header */
4892 capacity = iwl_read_restricted_mem(priv, base);
4893 mode = iwl_read_restricted_mem(priv, base + (1 * sizeof(u32)));
4894 num_wraps = iwl_read_restricted_mem(priv, base + (2 * sizeof(u32)));
4895 next_entry = iwl_read_restricted_mem(priv, base + (3 * sizeof(u32)));
4896
4897 size = num_wraps ? capacity : next_entry;
4898
4899 /* bail out if nothing in log */
4900 if (size == 0) {
4901 IWL_ERROR("Start IPW Event Log Dump: nothing in log\n");
4902 iwl_release_restricted_access(priv);
4903 return;
4904 }
4905
4906 IWL_ERROR("Start IPW Event Log Dump: display count %d, wraps %d\n",
4907 size, num_wraps);
4908
4909 /* if uCode has wrapped back to top of log, start at the oldest entry,
4910 * i.e the next one that uCode would fill. */
4911 if (num_wraps)
4912 iwl_print_event_log(priv, next_entry,
4913 capacity - next_entry, mode);
4914
4915 /* (then/else) start at top of log */
4916 iwl_print_event_log(priv, 0, next_entry, mode);
4917
4918 iwl_release_restricted_access(priv);
4919}
4920
4921/**
4922 * iwl_irq_handle_error - called for HW or SW error interrupt from card
4923 */
4924static void iwl_irq_handle_error(struct iwl_priv *priv)
4925{
4926 /* Set the FW error flag -- cleared on iwl_down */
4927 set_bit(STATUS_FW_ERROR, &priv->status);
4928
4929 /* Cancel currently queued command. */
4930 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4931
4932#ifdef CONFIG_IWLWIFI_DEBUG
4933 if (iwl_debug_level & IWL_DL_FW_ERRORS) {
4934 iwl_dump_nic_error_log(priv);
4935 iwl_dump_nic_event_log(priv);
4936 iwl_print_rx_config_cmd(&priv->staging_rxon);
4937 }
4938#endif
4939
4940 wake_up_interruptible(&priv->wait_command_queue);
4941
4942 /* Keep the restart process from trying to send host
4943 * commands by clearing the INIT status bit */
4944 clear_bit(STATUS_READY, &priv->status);
4945
4946 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4947 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
4948 "Restarting adapter due to uCode error.\n");
4949
4950 if (iwl_is_associated(priv)) {
4951 memcpy(&priv->recovery_rxon, &priv->active_rxon,
4952 sizeof(priv->recovery_rxon));
4953 priv->error_recovering = 1;
4954 }
4955 queue_work(priv->workqueue, &priv->restart);
4956 }
4957}
4958
4959static void iwl_error_recovery(struct iwl_priv *priv)
4960{
4961 unsigned long flags;
4962
4963 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
4964 sizeof(priv->staging_rxon));
4965 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4966 iwl_commit_rxon(priv);
4967
4968 iwl_rxon_add_station(priv, priv->bssid, 1);
4969
4970 spin_lock_irqsave(&priv->lock, flags);
4971 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
4972 priv->error_recovering = 0;
4973 spin_unlock_irqrestore(&priv->lock, flags);
4974}
4975
4976static void iwl_irq_tasklet(struct iwl_priv *priv)
4977{
4978 u32 inta, handled = 0;
4979 u32 inta_fh;
4980 unsigned long flags;
4981#ifdef CONFIG_IWLWIFI_DEBUG
4982 u32 inta_mask;
4983#endif
4984
4985 spin_lock_irqsave(&priv->lock, flags);
4986
4987 /* Ack/clear/reset pending uCode interrupts.
4988 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4989 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
4990 inta = iwl_read32(priv, CSR_INT);
4991 iwl_write32(priv, CSR_INT, inta);
4992
4993 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4994 * Any new interrupts that happen after this, either while we're
4995 * in this tasklet, or later, will show up in next ISR/tasklet. */
4996 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4997 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
4998
4999#ifdef CONFIG_IWLWIFI_DEBUG
5000 if (iwl_debug_level & IWL_DL_ISR) {
5001 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
5002 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5003 inta, inta_mask, inta_fh);
5004 }
5005#endif
5006
5007 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
5008 * atomic, make sure that inta covers all the interrupts that
5009 * we've discovered, even if FH interrupt came in just after
5010 * reading CSR_INT. */
5011 if (inta_fh & CSR_FH_INT_RX_MASK)
5012 inta |= CSR_INT_BIT_FH_RX;
5013 if (inta_fh & CSR_FH_INT_TX_MASK)
5014 inta |= CSR_INT_BIT_FH_TX;
5015
5016 /* Now service all interrupt bits discovered above. */
5017 if (inta & CSR_INT_BIT_HW_ERR) {
5018 IWL_ERROR("Microcode HW error detected. Restarting.\n");
5019
5020 /* Tell the device to stop sending interrupts */
5021 iwl_disable_interrupts(priv);
5022
5023 iwl_irq_handle_error(priv);
5024
5025 handled |= CSR_INT_BIT_HW_ERR;
5026
5027 spin_unlock_irqrestore(&priv->lock, flags);
5028
5029 return;
5030 }
5031
5032#ifdef CONFIG_IWLWIFI_DEBUG
5033 if (iwl_debug_level & (IWL_DL_ISR)) {
5034 /* NIC fires this, but we don't use it, redundant with WAKEUP */
5035 if (inta & CSR_INT_BIT_MAC_CLK_ACTV)
5036 IWL_DEBUG_ISR("Microcode started or stopped.\n");
5037
5038 /* Alive notification via Rx interrupt will do the real work */
5039 if (inta & CSR_INT_BIT_ALIVE)
5040 IWL_DEBUG_ISR("Alive interrupt\n");
5041 }
5042#endif
5043 /* Safely ignore these bits for debug checks below */
5044 inta &= ~(CSR_INT_BIT_MAC_CLK_ACTV | CSR_INT_BIT_ALIVE);
5045
5046 /* HW RF KILL switch toggled (4965 only) */
5047 if (inta & CSR_INT_BIT_RF_KILL) {
5048 int hw_rf_kill = 0;
5049 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
5050 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
5051 hw_rf_kill = 1;
5052
5053 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
5054 "RF_KILL bit toggled to %s.\n",
5055 hw_rf_kill ? "disable radio":"enable radio");
5056
5057 /* Queue restart only if RF_KILL switch was set to "kill"
5058 * when we loaded driver, and is now set to "enable".
5059 * After we're Alive, RF_KILL gets handled by
5060 * iwl_rx_card_state_notif() */
5061 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
5062 queue_work(priv->workqueue, &priv->restart);
5063
5064 handled |= CSR_INT_BIT_RF_KILL;
5065 }
5066
5067 /* Chip got too hot and stopped itself (4965 only) */
5068 if (inta & CSR_INT_BIT_CT_KILL) {
5069 IWL_ERROR("Microcode CT kill error detected.\n");
5070 handled |= CSR_INT_BIT_CT_KILL;
5071 }
5072
5073 /* Error detected by uCode */
5074 if (inta & CSR_INT_BIT_SW_ERR) {
5075 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
5076 inta);
5077 iwl_irq_handle_error(priv);
5078 handled |= CSR_INT_BIT_SW_ERR;
5079 }
5080
5081 /* uCode wakes up after power-down sleep */
5082 if (inta & CSR_INT_BIT_WAKEUP) {
5083 IWL_DEBUG_ISR("Wakeup interrupt\n");
5084 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
5085 iwl_tx_queue_update_write_ptr(priv, &priv->txq[0]);
5086 iwl_tx_queue_update_write_ptr(priv, &priv->txq[1]);
5087 iwl_tx_queue_update_write_ptr(priv, &priv->txq[2]);
5088 iwl_tx_queue_update_write_ptr(priv, &priv->txq[3]);
5089 iwl_tx_queue_update_write_ptr(priv, &priv->txq[4]);
5090 iwl_tx_queue_update_write_ptr(priv, &priv->txq[5]);
5091
5092 handled |= CSR_INT_BIT_WAKEUP;
5093 }
5094
5095 /* All uCode command responses, including Tx command responses,
5096 * Rx "responses" (frame-received notification), and other
5097 * notifications from uCode come through here*/
5098 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
5099 iwl_rx_handle(priv);
5100 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
5101 }
5102
5103 if (inta & CSR_INT_BIT_FH_TX) {
5104 IWL_DEBUG_ISR("Tx interrupt\n");
5105 handled |= CSR_INT_BIT_FH_TX;
5106 }
5107
5108 if (inta & ~handled)
5109 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
5110
5111 if (inta & ~CSR_INI_SET_MASK) {
5112 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
5113 inta & ~CSR_INI_SET_MASK);
5114 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
5115 }
5116
5117 /* Re-enable all interrupts */
5118 iwl_enable_interrupts(priv);
5119
5120#ifdef CONFIG_IWLWIFI_DEBUG
5121 if (iwl_debug_level & (IWL_DL_ISR)) {
5122 inta = iwl_read32(priv, CSR_INT);
5123 inta_mask = iwl_read32(priv, CSR_INT_MASK);
5124 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
5125 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
5126 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
5127 }
5128#endif
5129 spin_unlock_irqrestore(&priv->lock, flags);
5130}
5131
5132static irqreturn_t iwl_isr(int irq, void *data)
5133{
5134 struct iwl_priv *priv = data;
5135 u32 inta, inta_mask;
5136 u32 inta_fh;
5137 if (!priv)
5138 return IRQ_NONE;
5139
5140 spin_lock(&priv->lock);
5141
5142 /* Disable (but don't clear!) interrupts here to avoid
5143 * back-to-back ISRs and sporadic interrupts from our NIC.
5144 * If we have something to service, the tasklet will re-enable ints.
5145 * If we *don't* have something, we'll re-enable before leaving here. */
5146 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
5147 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
5148
5149 /* Discover which interrupts are active/pending */
5150 inta = iwl_read32(priv, CSR_INT);
5151 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
5152
5153 /* Ignore interrupt if there's nothing in NIC to service.
5154 * This may be due to IRQ shared with another device,
5155 * or due to sporadic interrupts thrown from our NIC. */
5156 if (!inta && !inta_fh) {
5157 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
5158 goto none;
5159 }
5160
5161 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
5162 /* Hardware disappeared */
5163 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
5164 goto none;
5165 }
5166
5167 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5168 inta, inta_mask, inta_fh);
5169
5170 /* iwl_irq_tasklet() will service interrupts and re-enable them */
5171 tasklet_schedule(&priv->irq_tasklet);
5172 spin_unlock(&priv->lock);
5173
5174 return IRQ_HANDLED;
5175
5176 none:
5177 /* re-enable interrupts here since we don't have anything to service. */
5178 iwl_enable_interrupts(priv);
5179 spin_unlock(&priv->lock);
5180 return IRQ_NONE;
5181}
5182
5183/************************** EEPROM BANDS ****************************
5184 *
5185 * The iwl_eeprom_band definitions below provide the mapping from the
5186 * EEPROM contents to the specific channel number supported for each
5187 * band.
5188 *
5189 * For example, iwl_priv->eeprom.band_3_channels[4] from the band_3
5190 * definition below maps to physical channel 42 in the 5.2GHz spectrum.
5191 * The specific geography and calibration information for that channel
5192 * is contained in the eeprom map itself.
5193 *
5194 * During init, we copy the eeprom information and channel map
5195 * information into priv->channel_info_24/52 and priv->channel_map_24/52
5196 *
5197 * channel_map_24/52 provides the index in the channel_info array for a
5198 * given channel. We have to have two separate maps as there is channel
5199 * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
5200 * band_2
5201 *
5202 * A value of 0xff stored in the channel_map indicates that the channel
5203 * is not supported by the hardware at all.
5204 *
5205 * A value of 0xfe in the channel_map indicates that the channel is not
5206 * valid for Tx with the current hardware. This means that
5207 * while the system can tune and receive on a given channel, it may not
5208 * be able to associate or transmit any frames on that
5209 * channel. There is no corresponding channel information for that
5210 * entry.
5211 *
5212 *********************************************************************/
5213
5214/* 2.4 GHz */
5215static const u8 iwl_eeprom_band_1[14] = {
5216 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
5217};
5218
5219/* 5.2 GHz bands */
5220static const u8 iwl_eeprom_band_2[] = {
5221 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
5222};
5223
5224static const u8 iwl_eeprom_band_3[] = { /* 5205-5320MHz */
5225 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
5226};
5227
5228static const u8 iwl_eeprom_band_4[] = { /* 5500-5700MHz */
5229 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
5230};
5231
5232static const u8 iwl_eeprom_band_5[] = { /* 5725-5825MHz */
5233 145, 149, 153, 157, 161, 165
5234};
5235
5236static u8 iwl_eeprom_band_6[] = { /* 2.4 FAT channel */
5237 1, 2, 3, 4, 5, 6, 7
5238};
5239
5240static u8 iwl_eeprom_band_7[] = { /* 5.2 FAT channel */
5241 36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157
5242};
5243
5244static void iwl_init_band_reference(const struct iwl_priv *priv, int band,
5245 int *eeprom_ch_count,
5246 const struct iwl_eeprom_channel
5247 **eeprom_ch_info,
5248 const u8 **eeprom_ch_index)
5249{
5250 switch (band) {
5251 case 1: /* 2.4GHz band */
5252 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_1);
5253 *eeprom_ch_info = priv->eeprom.band_1_channels;
5254 *eeprom_ch_index = iwl_eeprom_band_1;
5255 break;
5256 case 2: /* 5.2GHz band */
5257 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_2);
5258 *eeprom_ch_info = priv->eeprom.band_2_channels;
5259 *eeprom_ch_index = iwl_eeprom_band_2;
5260 break;
5261 case 3: /* 5.2GHz band */
5262 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_3);
5263 *eeprom_ch_info = priv->eeprom.band_3_channels;
5264 *eeprom_ch_index = iwl_eeprom_band_3;
5265 break;
5266 case 4: /* 5.2GHz band */
5267 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_4);
5268 *eeprom_ch_info = priv->eeprom.band_4_channels;
5269 *eeprom_ch_index = iwl_eeprom_band_4;
5270 break;
5271 case 5: /* 5.2GHz band */
5272 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_5);
5273 *eeprom_ch_info = priv->eeprom.band_5_channels;
5274 *eeprom_ch_index = iwl_eeprom_band_5;
5275 break;
5276 case 6:
5277 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_6);
5278 *eeprom_ch_info = priv->eeprom.band_24_channels;
5279 *eeprom_ch_index = iwl_eeprom_band_6;
5280 break;
5281 case 7:
5282 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_7);
5283 *eeprom_ch_info = priv->eeprom.band_52_channels;
5284 *eeprom_ch_index = iwl_eeprom_band_7;
5285 break;
5286 default:
5287 BUG();
5288 return;
5289 }
5290}
5291
5292const struct iwl_channel_info *iwl_get_channel_info(const struct iwl_priv *priv,
5293 int phymode, u16 channel)
5294{
5295 int i;
5296
5297 switch (phymode) {
5298 case MODE_IEEE80211A:
5299 for (i = 14; i < priv->channel_count; i++) {
5300 if (priv->channel_info[i].channel == channel)
5301 return &priv->channel_info[i];
5302 }
5303 break;
5304
5305 case MODE_IEEE80211B:
5306 case MODE_IEEE80211G:
5307 if (channel >= 1 && channel <= 14)
5308 return &priv->channel_info[channel - 1];
5309 break;
5310
5311 }
5312
5313 return NULL;
5314}
5315
5316#define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
5317 ? # x " " : "")
5318
5319static int iwl_init_channel_map(struct iwl_priv *priv)
5320{
5321 int eeprom_ch_count = 0;
5322 const u8 *eeprom_ch_index = NULL;
5323 const struct iwl_eeprom_channel *eeprom_ch_info = NULL;
5324 int band, ch;
5325 struct iwl_channel_info *ch_info;
5326
5327 if (priv->channel_count) {
5328 IWL_DEBUG_INFO("Channel map already initialized.\n");
5329 return 0;
5330 }
5331
5332 if (priv->eeprom.version < 0x2f) {
5333 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
5334 priv->eeprom.version);
5335 return -EINVAL;
5336 }
5337
5338 IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
5339
5340 priv->channel_count =
5341 ARRAY_SIZE(iwl_eeprom_band_1) +
5342 ARRAY_SIZE(iwl_eeprom_band_2) +
5343 ARRAY_SIZE(iwl_eeprom_band_3) +
5344 ARRAY_SIZE(iwl_eeprom_band_4) +
5345 ARRAY_SIZE(iwl_eeprom_band_5);
5346
5347 IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
5348
5349 priv->channel_info = kzalloc(sizeof(struct iwl_channel_info) *
5350 priv->channel_count, GFP_KERNEL);
5351 if (!priv->channel_info) {
5352 IWL_ERROR("Could not allocate channel_info\n");
5353 priv->channel_count = 0;
5354 return -ENOMEM;
5355 }
5356
5357 ch_info = priv->channel_info;
5358
5359 /* Loop through the 5 EEPROM bands adding them in order to the
5360 * channel map we maintain (that contains additional information than
5361 * what just in the EEPROM) */
5362 for (band = 1; band <= 5; band++) {
5363
5364 iwl_init_band_reference(priv, band, &eeprom_ch_count,
5365 &eeprom_ch_info, &eeprom_ch_index);
5366
5367 /* Loop through each band adding each of the channels */
5368 for (ch = 0; ch < eeprom_ch_count; ch++) {
5369 ch_info->channel = eeprom_ch_index[ch];
5370 ch_info->phymode = (band == 1) ? MODE_IEEE80211B :
5371 MODE_IEEE80211A;
5372
5373 /* permanently store EEPROM's channel regulatory flags
5374 * and max power in channel info database. */
5375 ch_info->eeprom = eeprom_ch_info[ch];
5376
5377 /* Copy the run-time flags so they are there even on
5378 * invalid channels */
5379 ch_info->flags = eeprom_ch_info[ch].flags;
5380
5381 if (!(is_channel_valid(ch_info))) {
5382 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
5383 "No traffic\n",
5384 ch_info->channel,
5385 ch_info->flags,
5386 is_channel_a_band(ch_info) ?
5387 "5.2" : "2.4");
5388 ch_info++;
5389 continue;
5390 }
5391
5392 /* Initialize regulatory-based run-time data */
5393 ch_info->max_power_avg = ch_info->curr_txpow =
5394 eeprom_ch_info[ch].max_power_avg;
5395 ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
5396 ch_info->min_power = 0;
5397
5398 IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
5399 " %ddBm): Ad-Hoc %ssupported\n",
5400 ch_info->channel,
5401 is_channel_a_band(ch_info) ?
5402 "5.2" : "2.4",
5403 CHECK_AND_PRINT(IBSS),
5404 CHECK_AND_PRINT(ACTIVE),
5405 CHECK_AND_PRINT(RADAR),
5406 CHECK_AND_PRINT(WIDE),
5407 CHECK_AND_PRINT(NARROW),
5408 CHECK_AND_PRINT(DFS),
5409 eeprom_ch_info[ch].flags,
5410 eeprom_ch_info[ch].max_power_avg,
5411 ((eeprom_ch_info[ch].
5412 flags & EEPROM_CHANNEL_IBSS)
5413 && !(eeprom_ch_info[ch].
5414 flags & EEPROM_CHANNEL_RADAR))
5415 ? "" : "not ");
5416
5417 /* Set the user_txpower_limit to the highest power
5418 * supported by any channel */
5419 if (eeprom_ch_info[ch].max_power_avg >
5420 priv->user_txpower_limit)
5421 priv->user_txpower_limit =
5422 eeprom_ch_info[ch].max_power_avg;
5423
5424 ch_info++;
5425 }
5426 }
5427
5428 for (band = 6; band <= 7; band++) {
5429 int phymode;
5430 u8 fat_extension_chan;
5431
5432 iwl_init_band_reference(priv, band, &eeprom_ch_count,
5433 &eeprom_ch_info, &eeprom_ch_index);
5434
5435 phymode = (band == 6) ? MODE_IEEE80211B : MODE_IEEE80211A;
5436 /* Loop through each band adding each of the channels */
5437 for (ch = 0; ch < eeprom_ch_count; ch++) {
5438
5439 if ((band == 6) &&
5440 ((eeprom_ch_index[ch] == 5) ||
5441 (eeprom_ch_index[ch] == 6) ||
5442 (eeprom_ch_index[ch] == 7)))
5443 fat_extension_chan = HT_IE_EXT_CHANNEL_MAX;
5444 else
5445 fat_extension_chan = HT_IE_EXT_CHANNEL_ABOVE;
5446
5447 iwl4965_set_fat_chan_info(priv, phymode,
5448 eeprom_ch_index[ch],
5449 &(eeprom_ch_info[ch]),
5450 fat_extension_chan);
5451
5452 iwl4965_set_fat_chan_info(priv, phymode,
5453 (eeprom_ch_index[ch] + 4),
5454 &(eeprom_ch_info[ch]),
5455 HT_IE_EXT_CHANNEL_BELOW);
5456 }
5457 }
5458
5459 return 0;
5460}
5461
5462/* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
5463 * sending probe req. This should be set long enough to hear probe responses
5464 * from more than one AP. */
5465#define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
5466#define IWL_ACTIVE_DWELL_TIME_52 (10)
5467
5468/* For faster active scanning, scan will move to the next channel if fewer than
5469 * PLCP_QUIET_THRESH packets are heard on this channel within
5470 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
5471 * time if it's a quiet channel (nothing responded to our probe, and there's
5472 * no other traffic).
5473 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
5474#define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
5475#define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
5476
5477/* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
5478 * Must be set longer than active dwell time.
5479 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
5480#define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
5481#define IWL_PASSIVE_DWELL_TIME_52 (10)
5482#define IWL_PASSIVE_DWELL_BASE (100)
5483#define IWL_CHANNEL_TUNE_TIME 5
5484
5485static inline u16 iwl_get_active_dwell_time(struct iwl_priv *priv, int phymode)
5486{
5487 if (phymode == MODE_IEEE80211A)
5488 return IWL_ACTIVE_DWELL_TIME_52;
5489 else
5490 return IWL_ACTIVE_DWELL_TIME_24;
5491}
5492
5493static u16 iwl_get_passive_dwell_time(struct iwl_priv *priv, int phymode)
5494{
5495 u16 active = iwl_get_active_dwell_time(priv, phymode);
5496 u16 passive = (phymode != MODE_IEEE80211A) ?
5497 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
5498 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
5499
5500 if (iwl_is_associated(priv)) {
5501 /* If we're associated, we clamp the maximum passive
5502 * dwell time to be 98% of the beacon interval (minus
5503 * 2 * channel tune time) */
5504 passive = priv->beacon_int;
5505 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
5506 passive = IWL_PASSIVE_DWELL_BASE;
5507 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
5508 }
5509
5510 if (passive <= active)
5511 passive = active + 1;
5512
5513 return passive;
5514}
5515
5516static int iwl_get_channels_for_scan(struct iwl_priv *priv, int phymode,
5517 u8 is_active, u8 direct_mask,
5518 struct iwl_scan_channel *scan_ch)
5519{
5520 const struct ieee80211_channel *channels = NULL;
5521 const struct ieee80211_hw_mode *hw_mode;
5522 const struct iwl_channel_info *ch_info;
5523 u16 passive_dwell = 0;
5524 u16 active_dwell = 0;
5525 int added, i;
5526
5527 hw_mode = iwl_get_hw_mode(priv, phymode);
5528 if (!hw_mode)
5529 return 0;
5530
5531 channels = hw_mode->channels;
5532
5533 active_dwell = iwl_get_active_dwell_time(priv, phymode);
5534 passive_dwell = iwl_get_passive_dwell_time(priv, phymode);
5535
5536 for (i = 0, added = 0; i < hw_mode->num_channels; i++) {
5537 if (channels[i].chan ==
5538 le16_to_cpu(priv->active_rxon.channel)) {
5539 if (iwl_is_associated(priv)) {
5540 IWL_DEBUG_SCAN
5541 ("Skipping current channel %d\n",
5542 le16_to_cpu(priv->active_rxon.channel));
5543 continue;
5544 }
5545 } else if (priv->only_active_channel)
5546 continue;
5547
5548 scan_ch->channel = channels[i].chan;
5549
5550 ch_info = iwl_get_channel_info(priv, phymode, scan_ch->channel);
5551 if (!is_channel_valid(ch_info)) {
5552 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
5553 scan_ch->channel);
5554 continue;
5555 }
5556
5557 if (!is_active || is_channel_passive(ch_info) ||
5558 !(channels[i].flag & IEEE80211_CHAN_W_ACTIVE_SCAN))
5559 scan_ch->type = 0; /* passive */
5560 else
5561 scan_ch->type = 1; /* active */
5562
5563 if (scan_ch->type & 1)
5564 scan_ch->type |= (direct_mask << 1);
5565
5566 if (is_channel_narrow(ch_info))
5567 scan_ch->type |= (1 << 7);
5568
5569 scan_ch->active_dwell = cpu_to_le16(active_dwell);
5570 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
5571
5572 /* Set power levels to defaults */
5573 scan_ch->tpc.dsp_atten = 110;
5574 /* scan_pwr_info->tpc.dsp_atten; */
5575
5576 /*scan_pwr_info->tpc.tx_gain; */
5577 if (phymode == MODE_IEEE80211A)
5578 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
5579 else {
5580 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
5581 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
5582 * power level
5583 scan_ch->tpc.tx_gain = ((1<<5) | (2 << 3)) | 3;
5584 */
5585 }
5586
5587 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
5588 scan_ch->channel,
5589 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
5590 (scan_ch->type & 1) ?
5591 active_dwell : passive_dwell);
5592
5593 scan_ch++;
5594 added++;
5595 }
5596
5597 IWL_DEBUG_SCAN("total channels to scan %d \n", added);
5598 return added;
5599}
5600
5601static void iwl_reset_channel_flag(struct iwl_priv *priv)
5602{
5603 int i, j;
5604 for (i = 0; i < 3; i++) {
5605 struct ieee80211_hw_mode *hw_mode = (void *)&priv->modes[i];
5606 for (j = 0; j < hw_mode->num_channels; j++)
5607 hw_mode->channels[j].flag = hw_mode->channels[j].val;
5608 }
5609}
5610
5611static void iwl_init_hw_rates(struct iwl_priv *priv,
5612 struct ieee80211_rate *rates)
5613{
5614 int i;
5615
5616 for (i = 0; i < IWL_RATE_COUNT; i++) {
5617 rates[i].rate = iwl_rates[i].ieee * 5;
5618 rates[i].val = i; /* Rate scaling will work on indexes */
5619 rates[i].val2 = i;
5620 rates[i].flags = IEEE80211_RATE_SUPPORTED;
5621 /* Only OFDM have the bits-per-symbol set */
5622 if ((i <= IWL_LAST_OFDM_RATE) && (i >= IWL_FIRST_OFDM_RATE))
5623 rates[i].flags |= IEEE80211_RATE_OFDM;
5624 else {
5625 /*
5626 * If CCK 1M then set rate flag to CCK else CCK_2
5627 * which is CCK | PREAMBLE2
5628 */
5629 rates[i].flags |= (iwl_rates[i].plcp == 10) ?
5630 IEEE80211_RATE_CCK : IEEE80211_RATE_CCK_2;
5631 }
5632
5633 /* Set up which ones are basic rates... */
5634 if (IWL_BASIC_RATES_MASK & (1 << i))
5635 rates[i].flags |= IEEE80211_RATE_BASIC;
5636 }
5637
5638 iwl4965_init_hw_rates(priv, rates);
5639}
5640
5641/**
5642 * iwl_init_geos - Initialize mac80211's geo/channel info based from eeprom
5643 */
5644static int iwl_init_geos(struct iwl_priv *priv)
5645{
5646 struct iwl_channel_info *ch;
5647 struct ieee80211_hw_mode *modes;
5648 struct ieee80211_channel *channels;
5649 struct ieee80211_channel *geo_ch;
5650 struct ieee80211_rate *rates;
5651 int i = 0;
5652 enum {
5653 A = 0,
5654 B = 1,
5655 G = 2,
5656 A_11N = 3,
5657 G_11N = 4,
5658 };
5659 int mode_count = 5;
5660
5661 if (priv->modes) {
5662 IWL_DEBUG_INFO("Geography modes already initialized.\n");
5663 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5664 return 0;
5665 }
5666
5667 modes = kzalloc(sizeof(struct ieee80211_hw_mode) * mode_count,
5668 GFP_KERNEL);
5669 if (!modes)
5670 return -ENOMEM;
5671
5672 channels = kzalloc(sizeof(struct ieee80211_channel) *
5673 priv->channel_count, GFP_KERNEL);
5674 if (!channels) {
5675 kfree(modes);
5676 return -ENOMEM;
5677 }
5678
5679 rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_MAX_RATES + 1)),
5680 GFP_KERNEL);
5681 if (!rates) {
5682 kfree(modes);
5683 kfree(channels);
5684 return -ENOMEM;
5685 }
5686
5687 /* 0 = 802.11a
5688 * 1 = 802.11b
5689 * 2 = 802.11g
5690 */
5691
5692 /* 5.2GHz channels start after the 2.4GHz channels */
5693 modes[A].mode = MODE_IEEE80211A;
5694 modes[A].channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
5695 modes[A].rates = rates;
5696 modes[A].num_rates = 8; /* just OFDM */
5697 modes[A].rates = &rates[4];
5698 modes[A].num_channels = 0;
5699
5700 modes[B].mode = MODE_IEEE80211B;
5701 modes[B].channels = channels;
5702 modes[B].rates = rates;
5703 modes[B].num_rates = 4; /* just CCK */
5704 modes[B].num_channels = 0;
5705
5706 modes[G].mode = MODE_IEEE80211G;
5707 modes[G].channels = channels;
5708 modes[G].rates = rates;
5709 modes[G].num_rates = 12; /* OFDM & CCK */
5710 modes[G].num_channels = 0;
5711
5712 modes[G_11N].mode = MODE_IEEE80211G;
5713 modes[G_11N].channels = channels;
5714 modes[G_11N].num_rates = 13; /* OFDM & CCK */
5715 modes[G_11N].rates = rates;
5716 modes[G_11N].num_channels = 0;
5717
5718 modes[A_11N].mode = MODE_IEEE80211A;
5719 modes[A_11N].channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
5720 modes[A_11N].rates = &rates[4];
5721 modes[A_11N].num_rates = 9; /* just OFDM */
5722 modes[A_11N].num_channels = 0;
5723
5724 priv->ieee_channels = channels;
5725 priv->ieee_rates = rates;
5726
5727 iwl_init_hw_rates(priv, rates);
5728
5729 for (i = 0, geo_ch = channels; i < priv->channel_count; i++) {
5730 ch = &priv->channel_info[i];
5731
5732 if (!is_channel_valid(ch)) {
5733 IWL_DEBUG_INFO("Channel %d [%sGHz] is restricted -- "
5734 "skipping.\n",
5735 ch->channel, is_channel_a_band(ch) ?
5736 "5.2" : "2.4");
5737 continue;
5738 }
5739
5740 if (is_channel_a_band(ch)) {
5741 geo_ch = &modes[A].channels[modes[A].num_channels++];
5742 modes[A_11N].num_channels++;
5743 } else {
5744 geo_ch = &modes[B].channels[modes[B].num_channels++];
5745 modes[G].num_channels++;
5746 modes[G_11N].num_channels++;
5747 }
5748
5749 geo_ch->freq = ieee80211chan2mhz(ch->channel);
5750 geo_ch->chan = ch->channel;
5751 geo_ch->power_level = ch->max_power_avg;
5752 geo_ch->antenna_max = 0xff;
5753
5754 if (is_channel_valid(ch)) {
5755 geo_ch->flag = IEEE80211_CHAN_W_SCAN;
5756 if (ch->flags & EEPROM_CHANNEL_IBSS)
5757 geo_ch->flag |= IEEE80211_CHAN_W_IBSS;
5758
5759 if (ch->flags & EEPROM_CHANNEL_ACTIVE)
5760 geo_ch->flag |= IEEE80211_CHAN_W_ACTIVE_SCAN;
5761
5762 if (ch->flags & EEPROM_CHANNEL_RADAR)
5763 geo_ch->flag |= IEEE80211_CHAN_W_RADAR_DETECT;
5764
5765 if (ch->max_power_avg > priv->max_channel_txpower_limit)
5766 priv->max_channel_txpower_limit =
5767 ch->max_power_avg;
5768 }
5769
5770 geo_ch->val = geo_ch->flag;
5771 }
5772
5773 if ((modes[A].num_channels == 0) && priv->is_abg) {
5774 printk(KERN_INFO DRV_NAME
5775 ": Incorrectly detected BG card as ABG. Please send "
5776 "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5777 priv->pci_dev->device, priv->pci_dev->subsystem_device);
5778 priv->is_abg = 0;
5779 }
5780
5781 printk(KERN_INFO DRV_NAME
5782 ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5783 modes[G].num_channels, modes[A].num_channels);
5784
5785 /*
5786 * NOTE: We register these in preference of order -- the
5787 * stack doesn't currently (as of 7.0.6 / Apr 24 '07) pick
5788 * a phymode based on rates or AP capabilities but seems to
5789 * configure it purely on if the channel being configured
5790 * is supported by a mode -- and the first match is taken
5791 */
5792
5793 if (modes[G].num_channels)
5794 ieee80211_register_hwmode(priv->hw, &modes[G]);
5795 if (modes[B].num_channels)
5796 ieee80211_register_hwmode(priv->hw, &modes[B]);
5797 if (modes[A].num_channels)
5798 ieee80211_register_hwmode(priv->hw, &modes[A]);
5799
5800 priv->modes = modes;
5801 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5802
5803 return 0;
5804}
5805
5806/******************************************************************************
5807 *
5808 * uCode download functions
5809 *
5810 ******************************************************************************/
5811
5812static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
5813{
5814 if (priv->ucode_code.v_addr != NULL) {
5815 pci_free_consistent(priv->pci_dev,
5816 priv->ucode_code.len,
5817 priv->ucode_code.v_addr,
5818 priv->ucode_code.p_addr);
5819 priv->ucode_code.v_addr = NULL;
5820 }
5821 if (priv->ucode_data.v_addr != NULL) {
5822 pci_free_consistent(priv->pci_dev,
5823 priv->ucode_data.len,
5824 priv->ucode_data.v_addr,
5825 priv->ucode_data.p_addr);
5826 priv->ucode_data.v_addr = NULL;
5827 }
5828 if (priv->ucode_data_backup.v_addr != NULL) {
5829 pci_free_consistent(priv->pci_dev,
5830 priv->ucode_data_backup.len,
5831 priv->ucode_data_backup.v_addr,
5832 priv->ucode_data_backup.p_addr);
5833 priv->ucode_data_backup.v_addr = NULL;
5834 }
5835 if (priv->ucode_init.v_addr != NULL) {
5836 pci_free_consistent(priv->pci_dev,
5837 priv->ucode_init.len,
5838 priv->ucode_init.v_addr,
5839 priv->ucode_init.p_addr);
5840 priv->ucode_init.v_addr = NULL;
5841 }
5842 if (priv->ucode_init_data.v_addr != NULL) {
5843 pci_free_consistent(priv->pci_dev,
5844 priv->ucode_init_data.len,
5845 priv->ucode_init_data.v_addr,
5846 priv->ucode_init_data.p_addr);
5847 priv->ucode_init_data.v_addr = NULL;
5848 }
5849 if (priv->ucode_boot.v_addr != NULL) {
5850 pci_free_consistent(priv->pci_dev,
5851 priv->ucode_boot.len,
5852 priv->ucode_boot.v_addr,
5853 priv->ucode_boot.p_addr);
5854 priv->ucode_boot.v_addr = NULL;
5855 }
5856}
5857
5858/**
5859 * iwl_verify_inst_full - verify runtime uCode image in card vs. host,
5860 * looking at all data.
5861 */
5862static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 * image, u32 len)
5863{
5864 u32 val;
5865 u32 save_len = len;
5866 int rc = 0;
5867 u32 errcnt;
5868
5869 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5870
5871 rc = iwl_grab_restricted_access(priv);
5872 if (rc)
5873 return rc;
5874
5875 iwl_write_restricted(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
5876
5877 errcnt = 0;
5878 for (; len > 0; len -= sizeof(u32), image++) {
5879 /* read data comes through single port, auto-incr addr */
5880 /* NOTE: Use the debugless read so we don't flood kernel log
5881 * if IWL_DL_IO is set */
5882 val = _iwl_read_restricted(priv, HBUS_TARG_MEM_RDAT);
5883 if (val != le32_to_cpu(*image)) {
5884 IWL_ERROR("uCode INST section is invalid at "
5885 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5886 save_len - len, val, le32_to_cpu(*image));
5887 rc = -EIO;
5888 errcnt++;
5889 if (errcnt >= 20)
5890 break;
5891 }
5892 }
5893
5894 iwl_release_restricted_access(priv);
5895
5896 if (!errcnt)
5897 IWL_DEBUG_INFO
5898 ("ucode image in INSTRUCTION memory is good\n");
5899
5900 return rc;
5901}
5902
5903
5904/**
5905 * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
5906 * using sample data 100 bytes apart. If these sample points are good,
5907 * it's a pretty good bet that everything between them is good, too.
5908 */
5909static int iwl_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
5910{
5911 u32 val;
5912 int rc = 0;
5913 u32 errcnt = 0;
5914 u32 i;
5915
5916 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5917
5918 rc = iwl_grab_restricted_access(priv);
5919 if (rc)
5920 return rc;
5921
5922 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
5923 /* read data comes through single port, auto-incr addr */
5924 /* NOTE: Use the debugless read so we don't flood kernel log
5925 * if IWL_DL_IO is set */
5926 iwl_write_restricted(priv, HBUS_TARG_MEM_RADDR,
5927 i + RTC_INST_LOWER_BOUND);
5928 val = _iwl_read_restricted(priv, HBUS_TARG_MEM_RDAT);
5929 if (val != le32_to_cpu(*image)) {
5930#if 0 /* Enable this if you want to see details */
5931 IWL_ERROR("uCode INST section is invalid at "
5932 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5933 i, val, *image);
5934#endif
5935 rc = -EIO;
5936 errcnt++;
5937 if (errcnt >= 3)
5938 break;
5939 }
5940 }
5941
5942 iwl_release_restricted_access(priv);
5943
5944 return rc;
5945}
5946
5947
5948/**
5949 * iwl_verify_ucode - determine which instruction image is in SRAM,
5950 * and verify its contents
5951 */
5952static int iwl_verify_ucode(struct iwl_priv *priv)
5953{
5954 __le32 *image;
5955 u32 len;
5956 int rc = 0;
5957
5958 /* Try bootstrap */
5959 image = (__le32 *)priv->ucode_boot.v_addr;
5960 len = priv->ucode_boot.len;
5961 rc = iwl_verify_inst_sparse(priv, image, len);
5962 if (rc == 0) {
5963 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5964 return 0;
5965 }
5966
5967 /* Try initialize */
5968 image = (__le32 *)priv->ucode_init.v_addr;
5969 len = priv->ucode_init.len;
5970 rc = iwl_verify_inst_sparse(priv, image, len);
5971 if (rc == 0) {
5972 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5973 return 0;
5974 }
5975
5976 /* Try runtime/protocol */
5977 image = (__le32 *)priv->ucode_code.v_addr;
5978 len = priv->ucode_code.len;
5979 rc = iwl_verify_inst_sparse(priv, image, len);
5980 if (rc == 0) {
5981 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5982 return 0;
5983 }
5984
5985 IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5986
5987 /* Show first several data entries in instruction SRAM.
5988 * Selection of bootstrap image is arbitrary. */
5989 image = (__le32 *)priv->ucode_boot.v_addr;
5990 len = priv->ucode_boot.len;
5991 rc = iwl_verify_inst_full(priv, image, len);
5992
5993 return rc;
5994}
5995
5996
5997/* check contents of special bootstrap uCode SRAM */
5998static int iwl_verify_bsm(struct iwl_priv *priv)
5999{
6000 __le32 *image = priv->ucode_boot.v_addr;
6001 u32 len = priv->ucode_boot.len;
6002 u32 reg;
6003 u32 val;
6004
6005 IWL_DEBUG_INFO("Begin verify bsm\n");
6006
6007 /* verify BSM SRAM contents */
6008 val = iwl_read_restricted_reg(priv, BSM_WR_DWCOUNT_REG);
6009 for (reg = BSM_SRAM_LOWER_BOUND;
6010 reg < BSM_SRAM_LOWER_BOUND + len;
6011 reg += sizeof(u32), image ++) {
6012 val = iwl_read_restricted_reg(priv, reg);
6013 if (val != le32_to_cpu(*image)) {
6014 IWL_ERROR("BSM uCode verification failed at "
6015 "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
6016 BSM_SRAM_LOWER_BOUND,
6017 reg - BSM_SRAM_LOWER_BOUND, len,
6018 val, le32_to_cpu(*image));
6019 return -EIO;
6020 }
6021 }
6022
6023 IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
6024
6025 return 0;
6026}
6027
6028/**
6029 * iwl_load_bsm - Load bootstrap instructions
6030 *
6031 * BSM operation:
6032 *
6033 * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
6034 * in special SRAM that does not power down during RFKILL. When powering back
6035 * up after power-saving sleeps (or during initial uCode load), the BSM loads
6036 * the bootstrap program into the on-board processor, and starts it.
6037 *
6038 * The bootstrap program loads (via DMA) instructions and data for a new
6039 * program from host DRAM locations indicated by the host driver in the
6040 * BSM_DRAM_* registers. Once the new program is loaded, it starts
6041 * automatically.
6042 *
6043 * When initializing the NIC, the host driver points the BSM to the
6044 * "initialize" uCode image. This uCode sets up some internal data, then
6045 * notifies host via "initialize alive" that it is complete.
6046 *
6047 * The host then replaces the BSM_DRAM_* pointer values to point to the
6048 * normal runtime uCode instructions and a backup uCode data cache buffer
6049 * (filled initially with starting data values for the on-board processor),
6050 * then triggers the "initialize" uCode to load and launch the runtime uCode,
6051 * which begins normal operation.
6052 *
6053 * When doing a power-save shutdown, runtime uCode saves data SRAM into
6054 * the backup data cache in DRAM before SRAM is powered down.
6055 *
6056 * When powering back up, the BSM loads the bootstrap program. This reloads
6057 * the runtime uCode instructions and the backup data cache into SRAM,
6058 * and re-launches the runtime uCode from where it left off.
6059 */
6060static int iwl_load_bsm(struct iwl_priv *priv)
6061{
6062 __le32 *image = priv->ucode_boot.v_addr;
6063 u32 len = priv->ucode_boot.len;
6064 dma_addr_t pinst;
6065 dma_addr_t pdata;
6066 u32 inst_len;
6067 u32 data_len;
6068 int rc;
6069 int i;
6070 u32 done;
6071 u32 reg_offset;
6072
6073 IWL_DEBUG_INFO("Begin load bsm\n");
6074
6075 /* make sure bootstrap program is no larger than BSM's SRAM size */
6076 if (len > IWL_MAX_BSM_SIZE)
6077 return -EINVAL;
6078
6079 /* Tell bootstrap uCode where to find the "Initialize" uCode
6080 * in host DRAM ... bits 31:0 for 3945, bits 35:4 for 4965.
6081 * NOTE: iwl_initialize_alive_start() will replace these values,
6082 * after the "initialize" uCode has run, to point to
6083 * runtime/protocol instructions and backup data cache. */
6084 pinst = priv->ucode_init.p_addr >> 4;
6085 pdata = priv->ucode_init_data.p_addr >> 4;
6086 inst_len = priv->ucode_init.len;
6087 data_len = priv->ucode_init_data.len;
6088
6089 rc = iwl_grab_restricted_access(priv);
6090 if (rc)
6091 return rc;
6092
6093 iwl_write_restricted_reg(priv, BSM_DRAM_INST_PTR_REG, pinst);
6094 iwl_write_restricted_reg(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6095 iwl_write_restricted_reg(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
6096 iwl_write_restricted_reg(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
6097
6098 /* Fill BSM memory with bootstrap instructions */
6099 for (reg_offset = BSM_SRAM_LOWER_BOUND;
6100 reg_offset < BSM_SRAM_LOWER_BOUND + len;
6101 reg_offset += sizeof(u32), image++)
6102 _iwl_write_restricted_reg(priv, reg_offset,
6103 le32_to_cpu(*image));
6104
6105 rc = iwl_verify_bsm(priv);
6106 if (rc) {
6107 iwl_release_restricted_access(priv);
6108 return rc;
6109 }
6110
6111 /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
6112 iwl_write_restricted_reg(priv, BSM_WR_MEM_SRC_REG, 0x0);
6113 iwl_write_restricted_reg(priv, BSM_WR_MEM_DST_REG,
6114 RTC_INST_LOWER_BOUND);
6115 iwl_write_restricted_reg(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
6116
6117 /* Load bootstrap code into instruction SRAM now,
6118 * to prepare to load "initialize" uCode */
6119 iwl_write_restricted_reg(priv, BSM_WR_CTRL_REG,
6120 BSM_WR_CTRL_REG_BIT_START);
6121
6122 /* Wait for load of bootstrap uCode to finish */
6123 for (i = 0; i < 100; i++) {
6124 done = iwl_read_restricted_reg(priv, BSM_WR_CTRL_REG);
6125 if (!(done & BSM_WR_CTRL_REG_BIT_START))
6126 break;
6127 udelay(10);
6128 }
6129 if (i < 100)
6130 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
6131 else {
6132 IWL_ERROR("BSM write did not complete!\n");
6133 return -EIO;
6134 }
6135
6136 /* Enable future boot loads whenever power management unit triggers it
6137 * (e.g. when powering back up after power-save shutdown) */
6138 iwl_write_restricted_reg(priv, BSM_WR_CTRL_REG,
6139 BSM_WR_CTRL_REG_BIT_START_EN);
6140
6141 iwl_release_restricted_access(priv);
6142
6143 return 0;
6144}
6145
6146static void iwl_nic_start(struct iwl_priv *priv)
6147{
6148 /* Remove all resets to allow NIC to operate */
6149 iwl_write32(priv, CSR_RESET, 0);
6150}
6151
6152/**
6153 * iwl_read_ucode - Read uCode images from disk file.
6154 *
6155 * Copy into buffers for card to fetch via bus-mastering
6156 */
6157static int iwl_read_ucode(struct iwl_priv *priv)
6158{
6159 struct iwl_ucode *ucode;
6160 int rc = 0;
6161 const struct firmware *ucode_raw;
6162 const char *name = "iwlwifi-4965" IWL4965_UCODE_API ".ucode";
6163 u8 *src;
6164 size_t len;
6165 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
6166
6167 /* Ask kernel firmware_class module to get the boot firmware off disk.
6168 * request_firmware() is synchronous, file is in memory on return. */
6169 rc = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
6170 if (rc < 0) {
6171 IWL_ERROR("%s firmware file req failed: Reason %d\n", name, rc);
6172 goto error;
6173 }
6174
6175 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
6176 name, ucode_raw->size);
6177
6178 /* Make sure that we got at least our header! */
6179 if (ucode_raw->size < sizeof(*ucode)) {
6180 IWL_ERROR("File size way too small!\n");
6181 rc = -EINVAL;
6182 goto err_release;
6183 }
6184
6185 /* Data from ucode file: header followed by uCode images */
6186 ucode = (void *)ucode_raw->data;
6187
6188 ver = le32_to_cpu(ucode->ver);
6189 inst_size = le32_to_cpu(ucode->inst_size);
6190 data_size = le32_to_cpu(ucode->data_size);
6191 init_size = le32_to_cpu(ucode->init_size);
6192 init_data_size = le32_to_cpu(ucode->init_data_size);
6193 boot_size = le32_to_cpu(ucode->boot_size);
6194
6195 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
6196 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
6197 inst_size);
6198 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
6199 data_size);
6200 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
6201 init_size);
6202 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
6203 init_data_size);
6204 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
6205 boot_size);
6206
6207 /* Verify size of file vs. image size info in file's header */
6208 if (ucode_raw->size < sizeof(*ucode) +
6209 inst_size + data_size + init_size +
6210 init_data_size + boot_size) {
6211
6212 IWL_DEBUG_INFO("uCode file size %d too small\n",
6213 (int)ucode_raw->size);
6214 rc = -EINVAL;
6215 goto err_release;
6216 }
6217
6218 /* Verify that uCode images will fit in card's SRAM */
6219 if (inst_size > IWL_MAX_INST_SIZE) {
6220 IWL_DEBUG_INFO("uCode instr len %d too large to fit in card\n",
6221 (int)inst_size);
6222 rc = -EINVAL;
6223 goto err_release;
6224 }
6225
6226 if (data_size > IWL_MAX_DATA_SIZE) {
6227 IWL_DEBUG_INFO("uCode data len %d too large to fit in card\n",
6228 (int)data_size);
6229 rc = -EINVAL;
6230 goto err_release;
6231 }
6232 if (init_size > IWL_MAX_INST_SIZE) {
6233 IWL_DEBUG_INFO
6234 ("uCode init instr len %d too large to fit in card\n",
6235 (int)init_size);
6236 rc = -EINVAL;
6237 goto err_release;
6238 }
6239 if (init_data_size > IWL_MAX_DATA_SIZE) {
6240 IWL_DEBUG_INFO
6241 ("uCode init data len %d too large to fit in card\n",
6242 (int)init_data_size);
6243 rc = -EINVAL;
6244 goto err_release;
6245 }
6246 if (boot_size > IWL_MAX_BSM_SIZE) {
6247 IWL_DEBUG_INFO
6248 ("uCode boot instr len %d too large to fit in bsm\n",
6249 (int)boot_size);
6250 rc = -EINVAL;
6251 goto err_release;
6252 }
6253
6254 /* Allocate ucode buffers for card's bus-master loading ... */
6255
6256 /* Runtime instructions and 2 copies of data:
6257 * 1) unmodified from disk
6258 * 2) backup cache for save/restore during power-downs */
6259 priv->ucode_code.len = inst_size;
6260 priv->ucode_code.v_addr =
6261 pci_alloc_consistent(priv->pci_dev,
6262 priv->ucode_code.len,
6263 &(priv->ucode_code.p_addr));
6264
6265 priv->ucode_data.len = data_size;
6266 priv->ucode_data.v_addr =
6267 pci_alloc_consistent(priv->pci_dev,
6268 priv->ucode_data.len,
6269 &(priv->ucode_data.p_addr));
6270
6271 priv->ucode_data_backup.len = data_size;
6272 priv->ucode_data_backup.v_addr =
6273 pci_alloc_consistent(priv->pci_dev,
6274 priv->ucode_data_backup.len,
6275 &(priv->ucode_data_backup.p_addr));
6276
6277
6278 /* Initialization instructions and data */
6279 priv->ucode_init.len = init_size;
6280 priv->ucode_init.v_addr =
6281 pci_alloc_consistent(priv->pci_dev,
6282 priv->ucode_init.len,
6283 &(priv->ucode_init.p_addr));
6284
6285 priv->ucode_init_data.len = init_data_size;
6286 priv->ucode_init_data.v_addr =
6287 pci_alloc_consistent(priv->pci_dev,
6288 priv->ucode_init_data.len,
6289 &(priv->ucode_init_data.p_addr));
6290
6291 /* Bootstrap (instructions only, no data) */
6292 priv->ucode_boot.len = boot_size;
6293 priv->ucode_boot.v_addr =
6294 pci_alloc_consistent(priv->pci_dev,
6295 priv->ucode_boot.len,
6296 &(priv->ucode_boot.p_addr));
6297
6298 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
6299 !priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr ||
6300 !priv->ucode_boot.v_addr || !priv->ucode_data_backup.v_addr)
6301 goto err_pci_alloc;
6302
6303 /* Copy images into buffers for card's bus-master reads ... */
6304
6305 /* Runtime instructions (first block of data in file) */
6306 src = &ucode->data[0];
6307 len = priv->ucode_code.len;
6308 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %d\n",
6309 (int)len);
6310 memcpy(priv->ucode_code.v_addr, src, len);
6311 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
6312 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
6313
6314 /* Runtime data (2nd block)
6315 * NOTE: Copy into backup buffer will be done in iwl_up() */
6316 src = &ucode->data[inst_size];
6317 len = priv->ucode_data.len;
6318 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %d\n",
6319 (int)len);
6320 memcpy(priv->ucode_data.v_addr, src, len);
6321 memcpy(priv->ucode_data_backup.v_addr, src, len);
6322
6323 /* Initialization instructions (3rd block) */
6324 if (init_size) {
6325 src = &ucode->data[inst_size + data_size];
6326 len = priv->ucode_init.len;
6327 IWL_DEBUG_INFO("Copying (but not loading) init instr len %d\n",
6328 (int)len);
6329 memcpy(priv->ucode_init.v_addr, src, len);
6330 }
6331
6332 /* Initialization data (4th block) */
6333 if (init_data_size) {
6334 src = &ucode->data[inst_size + data_size + init_size];
6335 len = priv->ucode_init_data.len;
6336 IWL_DEBUG_INFO("Copying (but not loading) init data len %d\n",
6337 (int)len);
6338 memcpy(priv->ucode_init_data.v_addr, src, len);
6339 }
6340
6341 /* Bootstrap instructions (5th block) */
6342 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
6343 len = priv->ucode_boot.len;
6344 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %d\n",
6345 (int)len);
6346 memcpy(priv->ucode_boot.v_addr, src, len);
6347
6348 /* We have our copies now, allow OS release its copies */
6349 release_firmware(ucode_raw);
6350 return 0;
6351
6352 err_pci_alloc:
6353 IWL_ERROR("failed to allocate pci memory\n");
6354 rc = -ENOMEM;
6355 iwl_dealloc_ucode_pci(priv);
6356
6357 err_release:
6358 release_firmware(ucode_raw);
6359
6360 error:
6361 return rc;
6362}
6363
6364
6365/**
6366 * iwl_set_ucode_ptrs - Set uCode address location
6367 *
6368 * Tell initialization uCode where to find runtime uCode.
6369 *
6370 * BSM registers initially contain pointers to initialization uCode.
6371 * We need to replace them to load runtime uCode inst and data,
6372 * and to save runtime data when powering down.
6373 */
6374static int iwl_set_ucode_ptrs(struct iwl_priv *priv)
6375{
6376 dma_addr_t pinst;
6377 dma_addr_t pdata;
6378 int rc = 0;
6379 unsigned long flags;
6380
6381 /* bits 35:4 for 4965 */
6382 pinst = priv->ucode_code.p_addr >> 4;
6383 pdata = priv->ucode_data_backup.p_addr >> 4;
6384
6385 spin_lock_irqsave(&priv->lock, flags);
6386 rc = iwl_grab_restricted_access(priv);
6387 if (rc) {
6388 spin_unlock_irqrestore(&priv->lock, flags);
6389 return rc;
6390 }
6391
6392 /* Tell bootstrap uCode where to find image to load */
6393 iwl_write_restricted_reg(priv, BSM_DRAM_INST_PTR_REG, pinst);
6394 iwl_write_restricted_reg(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6395 iwl_write_restricted_reg(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
6396 priv->ucode_data.len);
6397
6398 /* Inst bytecount must be last to set up, bit 31 signals uCode
6399 * that all new ptr/size info is in place */
6400 iwl_write_restricted_reg(priv, BSM_DRAM_INST_BYTECOUNT_REG,
6401 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
6402
6403 iwl_release_restricted_access(priv);
6404
6405 spin_unlock_irqrestore(&priv->lock, flags);
6406
6407 IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
6408
6409 return rc;
6410}
6411
6412/**
6413 * iwl_init_alive_start - Called after REPLY_ALIVE notification receieved
6414 *
6415 * Called after REPLY_ALIVE notification received from "initialize" uCode.
6416 *
6417 * The 4965 "initialize" ALIVE reply contains calibration data for:
6418 * Voltage, temperature, and MIMO tx gain correction, now stored in priv
6419 * (3945 does not contain this data).
6420 *
6421 * Tell "initialize" uCode to go ahead and load the runtime uCode.
6422*/
6423static void iwl_init_alive_start(struct iwl_priv *priv)
6424{
6425 /* Check alive response for "valid" sign from uCode */
6426 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
6427 /* We had an error bringing up the hardware, so take it
6428 * all the way back down so we can try again */
6429 IWL_DEBUG_INFO("Initialize Alive failed.\n");
6430 goto restart;
6431 }
6432
6433 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
6434 * This is a paranoid check, because we would not have gotten the
6435 * "initialize" alive if code weren't properly loaded. */
6436 if (iwl_verify_ucode(priv)) {
6437 /* Runtime instruction load was bad;
6438 * take it all the way back down so we can try again */
6439 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
6440 goto restart;
6441 }
6442
6443 /* Calculate temperature */
6444 priv->temperature = iwl4965_get_temperature(priv);
6445
6446 /* Send pointers to protocol/runtime uCode image ... init code will
6447 * load and launch runtime uCode, which will send us another "Alive"
6448 * notification. */
6449 IWL_DEBUG_INFO("Initialization Alive received.\n");
6450 if (iwl_set_ucode_ptrs(priv)) {
6451 /* Runtime instruction load won't happen;
6452 * take it all the way back down so we can try again */
6453 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
6454 goto restart;
6455 }
6456 return;
6457
6458 restart:
6459 queue_work(priv->workqueue, &priv->restart);
6460}
6461
6462
6463/**
6464 * iwl_alive_start - called after REPLY_ALIVE notification received
6465 * from protocol/runtime uCode (initialization uCode's
6466 * Alive gets handled by iwl_init_alive_start()).
6467 */
6468static void iwl_alive_start(struct iwl_priv *priv)
6469{
6470 int rc = 0;
6471
6472 IWL_DEBUG_INFO("Runtime Alive received.\n");
6473
6474 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
6475 /* We had an error bringing up the hardware, so take it
6476 * all the way back down so we can try again */
6477 IWL_DEBUG_INFO("Alive failed.\n");
6478 goto restart;
6479 }
6480
6481 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
6482 * This is a paranoid check, because we would not have gotten the
6483 * "runtime" alive if code weren't properly loaded. */
6484 if (iwl_verify_ucode(priv)) {
6485 /* Runtime instruction load was bad;
6486 * take it all the way back down so we can try again */
6487 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
6488 goto restart;
6489 }
6490
6491 iwl_clear_stations_table(priv);
6492
6493 rc = iwl4965_alive_notify(priv);
6494 if (rc) {
6495 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
6496 rc);
6497 goto restart;
6498 }
6499
6500 /* After the ALIVE response, we can process host commands */
6501 set_bit(STATUS_ALIVE, &priv->status);
6502
6503 /* Clear out the uCode error bit if it is set */
6504 clear_bit(STATUS_FW_ERROR, &priv->status);
6505
6506 rc = iwl_init_channel_map(priv);
6507 if (rc) {
6508 IWL_ERROR("initializing regulatory failed: %d\n", rc);
6509 return;
6510 }
6511
6512 iwl_init_geos(priv);
6513
6514 if (iwl_is_rfkill(priv))
6515 return;
6516
6517 if (!priv->mac80211_registered) {
6518 /* Unlock so any user space entry points can call back into
6519 * the driver without a deadlock... */
6520 mutex_unlock(&priv->mutex);
6521 iwl_rate_control_register(priv->hw);
6522 rc = ieee80211_register_hw(priv->hw);
6523 priv->hw->conf.beacon_int = 100;
6524 mutex_lock(&priv->mutex);
6525
6526 if (rc) {
6527 IWL_ERROR("Failed to register network "
6528 "device (error %d)\n", rc);
6529 return;
6530 }
6531
6532 priv->mac80211_registered = 1;
6533
6534 iwl_reset_channel_flag(priv);
6535 } else
6536 ieee80211_start_queues(priv->hw);
6537
6538 priv->active_rate = priv->rates_mask;
6539 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
6540
6541 iwl_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
6542
6543 if (iwl_is_associated(priv)) {
6544 struct iwl_rxon_cmd *active_rxon =
6545 (struct iwl_rxon_cmd *)(&priv->active_rxon);
6546
6547 memcpy(&priv->staging_rxon, &priv->active_rxon,
6548 sizeof(priv->staging_rxon));
6549 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6550 } else {
6551 /* Initialize our rx_config data */
6552 iwl_connection_init_rx_config(priv);
6553 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
6554 }
6555
6556 /* Configure BT coexistence */
6557 iwl_send_bt_config(priv);
6558
6559 /* Configure the adapter for unassociated operation */
6560 iwl_commit_rxon(priv);
6561
6562 /* At this point, the NIC is initialized and operational */
6563 priv->notif_missed_beacons = 0;
6564 set_bit(STATUS_READY, &priv->status);
6565
6566 iwl4965_rf_kill_ct_config(priv);
6567 IWL_DEBUG_INFO("ALIVE processing complete.\n");
6568
6569 if (priv->error_recovering)
6570 iwl_error_recovery(priv);
6571
6572 return;
6573
6574 restart:
6575 queue_work(priv->workqueue, &priv->restart);
6576}
6577
6578static void iwl_cancel_deferred_work(struct iwl_priv *priv);
6579
6580static void __iwl_down(struct iwl_priv *priv)
6581{
6582 unsigned long flags;
6583 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
6584 struct ieee80211_conf *conf = NULL;
6585
6586 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
6587
6588 conf = ieee80211_get_hw_conf(priv->hw);
6589
6590 if (!exit_pending)
6591 set_bit(STATUS_EXIT_PENDING, &priv->status);
6592
6593 iwl_clear_stations_table(priv);
6594
6595 /* Unblock any waiting calls */
6596 wake_up_interruptible_all(&priv->wait_command_queue);
6597
6598 iwl_cancel_deferred_work(priv);
6599
6600 /* Wipe out the EXIT_PENDING status bit if we are not actually
6601 * exiting the module */
6602 if (!exit_pending)
6603 clear_bit(STATUS_EXIT_PENDING, &priv->status);
6604
6605 /* stop and reset the on-board processor */
6606 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
6607
6608 /* tell the device to stop sending interrupts */
6609 iwl_disable_interrupts(priv);
6610
6611 if (priv->mac80211_registered)
6612 ieee80211_stop_queues(priv->hw);
6613
6614 /* If we have not previously called iwl_init() then
6615 * clear all bits but the RF Kill and SUSPEND bits and return */
6616 if (!iwl_is_init(priv)) {
6617 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6618 STATUS_RF_KILL_HW |
6619 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6620 STATUS_RF_KILL_SW |
6621 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6622 STATUS_IN_SUSPEND;
6623 goto exit;
6624 }
6625
6626 /* ...otherwise clear out all the status bits but the RF Kill and
6627 * SUSPEND bits and continue taking the NIC down. */
6628 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6629 STATUS_RF_KILL_HW |
6630 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6631 STATUS_RF_KILL_SW |
6632 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6633 STATUS_IN_SUSPEND |
6634 test_bit(STATUS_FW_ERROR, &priv->status) <<
6635 STATUS_FW_ERROR;
6636
6637 spin_lock_irqsave(&priv->lock, flags);
6638 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
6639 spin_unlock_irqrestore(&priv->lock, flags);
6640
6641 iwl_hw_txq_ctx_stop(priv);
6642 iwl_hw_rxq_stop(priv);
6643
6644 spin_lock_irqsave(&priv->lock, flags);
6645 if (!iwl_grab_restricted_access(priv)) {
6646 iwl_write_restricted_reg(priv, APMG_CLK_DIS_REG,
6647 APMG_CLK_VAL_DMA_CLK_RQT);
6648 iwl_release_restricted_access(priv);
6649 }
6650 spin_unlock_irqrestore(&priv->lock, flags);
6651
6652 udelay(5);
6653
6654 iwl_hw_nic_stop_master(priv);
6655 iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
6656 iwl_hw_nic_reset(priv);
6657
6658 exit:
6659 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
6660
6661 if (priv->ibss_beacon)
6662 dev_kfree_skb(priv->ibss_beacon);
6663 priv->ibss_beacon = NULL;
6664
6665 /* clear out any free frames */
6666 iwl_clear_free_frames(priv);
6667}
6668
6669static void iwl_down(struct iwl_priv *priv)
6670{
6671 mutex_lock(&priv->mutex);
6672 __iwl_down(priv);
6673 mutex_unlock(&priv->mutex);
6674}
6675
6676#define MAX_HW_RESTARTS 5
6677
6678static int __iwl_up(struct iwl_priv *priv)
6679{
0795af57 6680 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 6681 int rc, i;
6682 u32 hw_rf_kill = 0;
6683
6684 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6685 IWL_WARNING("Exit pending; will not bring the NIC up\n");
6686 return -EIO;
6687 }
6688
6689 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
6690 IWL_WARNING("Radio disabled by SW RF kill (module "
6691 "parameter)\n");
6692 return 0;
6693 }
6694
6695 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
6696
6697 rc = iwl_hw_nic_init(priv);
6698 if (rc) {
6699 IWL_ERROR("Unable to int nic\n");
6700 return rc;
6701 }
6702
6703 /* make sure rfkill handshake bits are cleared */
6704 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6705 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
6706 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
6707
6708 /* clear (again), then enable host interrupts */
6709 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
6710 iwl_enable_interrupts(priv);
6711
6712 /* really make sure rfkill handshake bits are cleared */
6713 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6714 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6715
6716 /* Copy original ucode data image from disk into backup cache.
6717 * This will be used to initialize the on-board processor's
6718 * data SRAM for a clean start when the runtime program first loads. */
6719 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
6720 priv->ucode_data.len);
6721
6722 /* If platform's RF_KILL switch is set to KILL,
6723 * wait for BIT_INT_RF_KILL interrupt before loading uCode
6724 * and getting things started */
6725 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
6726 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
6727 hw_rf_kill = 1;
6728
6729 if (test_bit(STATUS_RF_KILL_HW, &priv->status) || hw_rf_kill) {
6730 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
6731 return 0;
6732 }
6733
6734 for (i = 0; i < MAX_HW_RESTARTS; i++) {
6735
6736 iwl_clear_stations_table(priv);
6737
6738 /* load bootstrap state machine,
6739 * load bootstrap program into processor's memory,
6740 * prepare to load the "initialize" uCode */
6741 rc = iwl_load_bsm(priv);
6742
6743 if (rc) {
6744 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
6745 continue;
6746 }
6747
6748 /* start card; "initialize" will load runtime ucode */
6749 iwl_nic_start(priv);
6750
6751 /* MAC Address location in EEPROM same for 3945/4965 */
6752 get_eeprom_mac(priv, priv->mac_addr);
0795af57
JP		 6753 IWL_DEBUG_INFO("MAC address: %s\n",
6754 print_mac(mac, priv->mac_addr));
b481de9c
ZY		 6755
6756 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
6757
6758 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
6759
6760 return 0;
6761 }
6762
6763 set_bit(STATUS_EXIT_PENDING, &priv->status);
6764 __iwl_down(priv);
6765
6766 /* tried to restart and config the device for as long as our
6767 * patience could withstand */
6768 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
6769 return -EIO;
6770}
6771
6772
6773/*****************************************************************************
6774 *
6775 * Workqueue callbacks
6776 *
6777 *****************************************************************************/
6778
6779static void iwl_bg_init_alive_start(struct work_struct *data)
6780{
6781 struct iwl_priv *priv =
6782 container_of(data, struct iwl_priv, init_alive_start.work);
6783
6784 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6785 return;
6786
6787 mutex_lock(&priv->mutex);
6788 iwl_init_alive_start(priv);
6789 mutex_unlock(&priv->mutex);
6790}
6791
6792static void iwl_bg_alive_start(struct work_struct *data)
6793{
6794 struct iwl_priv *priv =
6795 container_of(data, struct iwl_priv, alive_start.work);
6796
6797 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6798 return;
6799
6800 mutex_lock(&priv->mutex);
6801 iwl_alive_start(priv);
6802 mutex_unlock(&priv->mutex);
6803}
6804
6805static void iwl_bg_rf_kill(struct work_struct *work)
6806{
6807 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
6808
6809 wake_up_interruptible(&priv->wait_command_queue);
6810
6811 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6812 return;
6813
6814 mutex_lock(&priv->mutex);
6815
6816 if (!iwl_is_rfkill(priv)) {
6817 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
6818 "HW and/or SW RF Kill no longer active, restarting "
6819 "device\n");
6820 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6821 queue_work(priv->workqueue, &priv->restart);
6822 } else {
6823
6824 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
6825 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
6826 "disabled by SW switch\n");
6827 else
6828 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
6829 "Kill switch must be turned off for "
6830 "wireless networking to work.\n");
6831 }
6832 mutex_unlock(&priv->mutex);
6833}
6834
6835#define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
6836
6837static void iwl_bg_scan_check(struct work_struct *data)
6838{
6839 struct iwl_priv *priv =
6840 container_of(data, struct iwl_priv, scan_check.work);
6841
6842 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6843 return;
6844
6845 mutex_lock(&priv->mutex);
6846 if (test_bit(STATUS_SCANNING, &priv->status) ||
6847 test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6848 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
6849 "Scan completion watchdog resetting adapter (%dms)\n",
6850 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
6851 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6852 queue_work(priv->workqueue, &priv->restart);
6853 }
6854 mutex_unlock(&priv->mutex);
6855}
6856
6857static void iwl_bg_request_scan(struct work_struct *data)
6858{
6859 struct iwl_priv *priv =
6860 container_of(data, struct iwl_priv, request_scan);
6861 struct iwl_host_cmd cmd = {
6862 .id = REPLY_SCAN_CMD,
6863 .len = sizeof(struct iwl_scan_cmd),
6864 .meta.flags = CMD_SIZE_HUGE,
6865 };
6866 int rc = 0;
6867 struct iwl_scan_cmd *scan;
6868 struct ieee80211_conf *conf = NULL;
6869 u8 direct_mask;
6870 int phymode;
6871
6872 conf = ieee80211_get_hw_conf(priv->hw);
6873
6874 mutex_lock(&priv->mutex);
6875
6876 if (!iwl_is_ready(priv)) {
6877 IWL_WARNING("request scan called when driver not ready.\n");
6878 goto done;
6879 }
6880
6881 /* Make sure the scan wasn't cancelled before this queued work
6882 * was given the chance to run... */
6883 if (!test_bit(STATUS_SCANNING, &priv->status))
6884 goto done;
6885
6886 /* This should never be called or scheduled if there is currently
6887 * a scan active in the hardware. */
6888 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
6889 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6890 "Ignoring second request.\n");
6891 rc = -EIO;
6892 goto done;
6893 }
6894
6895 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6896 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6897 goto done;
6898 }
6899
6900 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6901 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
6902 goto done;
6903 }
6904
6905 if (iwl_is_rfkill(priv)) {
6906 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6907 goto done;
6908 }
6909
6910 if (!test_bit(STATUS_READY, &priv->status)) {
6911 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
6912 goto done;
6913 }
6914
6915 if (!priv->scan_bands) {
6916 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6917 goto done;
6918 }
6919
6920 if (!priv->scan) {
6921 priv->scan = kmalloc(sizeof(struct iwl_scan_cmd) +
6922 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
6923 if (!priv->scan) {
6924 rc = -ENOMEM;
6925 goto done;
6926 }
6927 }
6928 scan = priv->scan;
6929 memset(scan, 0, sizeof(struct iwl_scan_cmd) + IWL_MAX_SCAN_SIZE);
6930
6931 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
6932 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
6933
6934 if (iwl_is_associated(priv)) {
6935 u16 interval = 0;
6936 u32 extra;
6937 u32 suspend_time = 100;
6938 u32 scan_suspend_time = 100;
6939 unsigned long flags;
6940
6941 IWL_DEBUG_INFO("Scanning while associated...\n");
6942
6943 spin_lock_irqsave(&priv->lock, flags);
6944 interval = priv->beacon_int;
6945 spin_unlock_irqrestore(&priv->lock, flags);
6946
6947 scan->suspend_time = 0;
6948 scan->max_out_time = cpu_to_le32(600 * 1024);
6949 if (!interval)
6950 interval = suspend_time;
6951
6952 extra = (suspend_time / interval) << 22;
6953 scan_suspend_time = (extra |
6954 ((suspend_time % interval) * 1024));
6955 scan->suspend_time = cpu_to_le32(scan_suspend_time);
6956 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
6957 scan_suspend_time, interval);
6958 }
6959
6960 /* We should add the ability for user to lock to PASSIVE ONLY */
6961 if (priv->one_direct_scan) {
6962 IWL_DEBUG_SCAN
6963 ("Kicking off one direct scan for '%s'\n",
6964 iwl_escape_essid(priv->direct_ssid,
6965 priv->direct_ssid_len));
6966 scan->direct_scan[0].id = WLAN_EID_SSID;
6967 scan->direct_scan[0].len = priv->direct_ssid_len;
6968 memcpy(scan->direct_scan[0].ssid,
6969 priv->direct_ssid, priv->direct_ssid_len);
6970 direct_mask = 1;
6971 } else if (!iwl_is_associated(priv)) {
6972 scan->direct_scan[0].id = WLAN_EID_SSID;
6973 scan->direct_scan[0].len = priv->essid_len;
6974 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
6975 direct_mask = 1;
6976 } else
6977 direct_mask = 0;
6978
6979 /* We don't build a direct scan probe request; the uCode will do
6980 * that based on the direct_mask added to each channel entry */
6981 scan->tx_cmd.len = cpu_to_le16(
6982 iwl_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
6983 IWL_MAX_SCAN_SIZE - sizeof(scan), 0));
6984 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
6985 scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
6986 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
6987
6988 /* flags + rate selection */
6989
6990 scan->tx_cmd.tx_flags |= cpu_to_le32(0x200);
6991
6992 switch (priv->scan_bands) {
6993 case 2:
6994 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
6995 scan->tx_cmd.rate_n_flags =
6996 iwl_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
6997 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
6998
6999 scan->good_CRC_th = 0;
7000 phymode = MODE_IEEE80211G;
7001 break;
7002
7003 case 1:
7004 scan->tx_cmd.rate_n_flags =
7005 iwl_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
7006 RATE_MCS_ANT_B_MSK);
7007 scan->good_CRC_th = IWL_GOOD_CRC_TH;
7008 phymode = MODE_IEEE80211A;
7009 break;
7010
7011 default:
7012 IWL_WARNING("Invalid scan band count\n");
7013 goto done;
7014 }
7015
7016 /* select Rx chains */
7017
7018 /* Force use of chains B and C (0x6) for scan Rx.
7019 * Avoid A (0x1) because of its off-channel reception on A-band.
7020 * MIMO is not used here, but value is required to make uCode happy. */
7021 scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
7022 cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
7023 (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
7024 (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
7025
7026 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
7027 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
7028
7029 if (direct_mask)
7030 IWL_DEBUG_SCAN
7031 ("Initiating direct scan for %s.\n",
7032 iwl_escape_essid(priv->essid, priv->essid_len));
7033 else
7034 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
7035
7036 scan->channel_count =
7037 iwl_get_channels_for_scan(
7038 priv, phymode, 1, /* active */
7039 direct_mask,
7040 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
7041
7042 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
7043 scan->channel_count * sizeof(struct iwl_scan_channel);
7044 cmd.data = scan;
7045 scan->len = cpu_to_le16(cmd.len);
7046
7047 set_bit(STATUS_SCAN_HW, &priv->status);
7048 rc = iwl_send_cmd_sync(priv, &cmd);
7049 if (rc)
7050 goto done;
7051
7052 queue_delayed_work(priv->workqueue, &priv->scan_check,
7053 IWL_SCAN_CHECK_WATCHDOG);
7054
7055 mutex_unlock(&priv->mutex);
7056 return;
7057
7058 done:
7059 /* inform mac80211 sacn aborted */
7060 queue_work(priv->workqueue, &priv->scan_completed);
7061 mutex_unlock(&priv->mutex);
7062}
7063
7064static void iwl_bg_up(struct work_struct *data)
7065{
7066 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
7067
7068 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7069 return;
7070
7071 mutex_lock(&priv->mutex);
7072 __iwl_up(priv);
7073 mutex_unlock(&priv->mutex);
7074}
7075
7076static void iwl_bg_restart(struct work_struct *data)
7077{
7078 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
7079
7080 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7081 return;
7082
7083 iwl_down(priv);
7084 queue_work(priv->workqueue, &priv->up);
7085}
7086
7087static void iwl_bg_rx_replenish(struct work_struct *data)
7088{
7089 struct iwl_priv *priv =
7090 container_of(data, struct iwl_priv, rx_replenish);
7091
7092 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7093 return;
7094
7095 mutex_lock(&priv->mutex);
7096 iwl_rx_replenish(priv);
7097 mutex_unlock(&priv->mutex);
7098}
7099
7100static void iwl_bg_post_associate(struct work_struct *data)
7101{
7102 struct iwl_priv *priv = container_of(data, struct iwl_priv,
7103 post_associate.work);
7104
7105 int rc = 0;
7106 struct ieee80211_conf *conf = NULL;
0795af57 7107 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 7108
7109 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7110 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
7111 return;
7112 }
7113
0795af57
JP		 7114 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
7115 priv->assoc_id,
7116 print_mac(mac, priv->active_rxon.bssid_addr));
b481de9c
ZY		 7117
7118
7119 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7120 return;
7121
7122 mutex_lock(&priv->mutex);
7123
7124 conf = ieee80211_get_hw_conf(priv->hw);
7125
7126 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7127 iwl_commit_rxon(priv);
7128
7129 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
7130 iwl_setup_rxon_timing(priv);
7131 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7132 sizeof(priv->rxon_timing), &priv->rxon_timing);
7133 if (rc)
7134 IWL_WARNING("REPLY_RXON_TIMING failed - "
7135 "Attempting to continue.\n");
7136
7137 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7138
7139#ifdef CONFIG_IWLWIFI_HT
7140 if (priv->is_ht_enabled && priv->current_assoc_ht.is_ht)
7141 iwl4965_set_rxon_ht(priv, &priv->current_assoc_ht);
7142 else {
7143 priv->active_rate_ht[0] = 0;
7144 priv->active_rate_ht[1] = 0;
7145 priv->current_channel_width = IWL_CHANNEL_WIDTH_20MHZ;
7146 }
7147#endif /* CONFIG_IWLWIFI_HT*/
7148 iwl4965_set_rxon_chain(priv);
7149 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7150
7151 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
7152 priv->assoc_id, priv->beacon_int);
7153
7154 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7155 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
7156 else
7157 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
7158
7159 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7160 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
7161 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
7162 else
7163 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
7164
7165 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7166 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
7167
7168 }
7169
7170 iwl_commit_rxon(priv);
7171
7172 switch (priv->iw_mode) {
7173 case IEEE80211_IF_TYPE_STA:
7174 iwl_rate_scale_init(priv->hw, IWL_AP_ID);
7175 break;
7176
7177 case IEEE80211_IF_TYPE_IBSS:
7178
7179 /* clear out the station table */
7180 iwl_clear_stations_table(priv);
7181
7182 iwl_rxon_add_station(priv, BROADCAST_ADDR, 0);
7183 iwl_rxon_add_station(priv, priv->bssid, 0);
7184 iwl_rate_scale_init(priv->hw, IWL_STA_ID);
7185 iwl_send_beacon_cmd(priv);
7186
7187 break;
7188
7189 default:
7190 IWL_ERROR("%s Should not be called in %d mode\n",
7191 __FUNCTION__, priv->iw_mode);
7192 break;
7193 }
7194
7195 iwl_sequence_reset(priv);
7196
7197#ifdef CONFIG_IWLWIFI_SENSITIVITY
7198 /* Enable Rx differential gain and sensitivity calibrations */
7199 iwl4965_chain_noise_reset(priv);
7200 priv->start_calib = 1;
7201#endif /* CONFIG_IWLWIFI_SENSITIVITY */
7202
7203 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7204 priv->assoc_station_added = 1;
7205
7206#ifdef CONFIG_IWLWIFI_QOS
7207 iwl_activate_qos(priv, 0);
7208#endif /* CONFIG_IWLWIFI_QOS */
7209 mutex_unlock(&priv->mutex);
7210}
7211
7212static void iwl_bg_abort_scan(struct work_struct *work)
7213{
7214 struct iwl_priv *priv = container_of(work, struct iwl_priv,
7215 abort_scan);
7216
7217 if (!iwl_is_ready(priv))
7218 return;
7219
7220 mutex_lock(&priv->mutex);
7221
7222 set_bit(STATUS_SCAN_ABORTING, &priv->status);
7223 iwl_send_scan_abort(priv);
7224
7225 mutex_unlock(&priv->mutex);
7226}
7227
7228static void iwl_bg_scan_completed(struct work_struct *work)
7229{
7230 struct iwl_priv *priv =
7231 container_of(work, struct iwl_priv, scan_completed);
7232
7233 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
7234
7235 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7236 return;
7237
7238 ieee80211_scan_completed(priv->hw);
7239
7240 /* Since setting the TXPOWER may have been deferred while
7241 * performing the scan, fire one off */
7242 mutex_lock(&priv->mutex);
7243 iwl_hw_reg_send_txpower(priv);
7244 mutex_unlock(&priv->mutex);
7245}
7246
7247/*****************************************************************************
7248 *
7249 * mac80211 entry point functions
7250 *
7251 *****************************************************************************/
7252
7253static int iwl_mac_open(struct ieee80211_hw *hw)
7254{
7255 struct iwl_priv *priv = hw->priv;
7256
7257 IWL_DEBUG_MAC80211("enter\n");
7258
7259 /* we should be verifying the device is ready to be opened */
7260 mutex_lock(&priv->mutex);
7261
7262 priv->is_open = 1;
7263
7264 if (!iwl_is_rfkill(priv))
7265 ieee80211_start_queues(priv->hw);
7266
7267 mutex_unlock(&priv->mutex);
7268 IWL_DEBUG_MAC80211("leave\n");
7269 return 0;
7270}
7271
7272static int iwl_mac_stop(struct ieee80211_hw *hw)
7273{
7274 struct iwl_priv *priv = hw->priv;
7275
7276 IWL_DEBUG_MAC80211("enter\n");
7277 priv->is_open = 0;
7278 /*netif_stop_queue(dev); */
7279 flush_workqueue(priv->workqueue);
7280 IWL_DEBUG_MAC80211("leave\n");
7281
7282 return 0;
7283}
7284
7285static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
7286 struct ieee80211_tx_control *ctl)
7287{
7288 struct iwl_priv *priv = hw->priv;
7289
7290 IWL_DEBUG_MAC80211("enter\n");
7291
7292 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
7293 IWL_DEBUG_MAC80211("leave - monitor\n");
7294 return -1;
7295 }
7296
7297 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
7298 ctl->tx_rate);
7299
7300 if (iwl_tx_skb(priv, skb, ctl))
7301 dev_kfree_skb_any(skb);
7302
7303 IWL_DEBUG_MAC80211("leave\n");
7304 return 0;
7305}
7306
7307static int iwl_mac_add_interface(struct ieee80211_hw *hw,
7308 struct ieee80211_if_init_conf *conf)
7309{
7310 struct iwl_priv *priv = hw->priv;
7311 unsigned long flags;
0795af57 7312 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 7313
7314 IWL_DEBUG_MAC80211("enter: id %d, type %d\n", conf->if_id, conf->type);
7315 if (conf->mac_addr)
0795af57
JP		 7316 IWL_DEBUG_MAC80211("enter: MAC %s\n",
7317 print_mac(mac, conf->mac_addr));
b481de9c
ZY		 7318
7319 if (priv->interface_id) {
7320 IWL_DEBUG_MAC80211("leave - interface_id != 0\n");
7321 return 0;
7322 }
7323
7324 spin_lock_irqsave(&priv->lock, flags);
7325 priv->interface_id = conf->if_id;
7326
7327 spin_unlock_irqrestore(&priv->lock, flags);
7328
7329 mutex_lock(&priv->mutex);
7330 iwl_set_mode(priv, conf->type);
7331
7332 IWL_DEBUG_MAC80211("leave\n");
7333 mutex_unlock(&priv->mutex);
7334
7335 return 0;
7336}
7337
7338/**
7339 * iwl_mac_config - mac80211 config callback
7340 *
7341 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
7342 * be set inappropriately and the driver currently sets the hardware up to
7343 * use it whenever needed.
7344 */
7345static int iwl_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
7346{
7347 struct iwl_priv *priv = hw->priv;
7348 const struct iwl_channel_info *ch_info;
7349 unsigned long flags;
7350
7351 mutex_lock(&priv->mutex);
7352 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel);
7353
7354 if (!iwl_is_ready(priv)) {
7355 IWL_DEBUG_MAC80211("leave - not ready\n");
7356 mutex_unlock(&priv->mutex);
7357 return -EIO;
7358 }
7359
7360 /* TODO: Figure out how to get ieee80211_local->sta_scanning w/ only
7361 * what is exposed through include/ declrations */
7362 if (unlikely(!iwl_param_disable_hw_scan &&
7363 test_bit(STATUS_SCANNING, &priv->status))) {
7364 IWL_DEBUG_MAC80211("leave - scanning\n");
7365 mutex_unlock(&priv->mutex);
7366 return 0;
7367 }
7368
7369 spin_lock_irqsave(&priv->lock, flags);
7370
7371 ch_info = iwl_get_channel_info(priv, conf->phymode, conf->channel);
7372 if (!is_channel_valid(ch_info)) {
7373 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this SKU.\n",
7374 conf->channel, conf->phymode);
7375 IWL_DEBUG_MAC80211("leave - invalid channel\n");
7376 spin_unlock_irqrestore(&priv->lock, flags);
7377 mutex_unlock(&priv->mutex);
7378 return -EINVAL;
7379 }
7380
7381#ifdef CONFIG_IWLWIFI_HT
7382 /* if we are switching fron ht to 2.4 clear flags
7383 * from any ht related info since 2.4 does not
7384 * support ht */
7385 if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel)
7386#ifdef IEEE80211_CONF_CHANNEL_SWITCH
7387 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
7388#endif
7389 )
7390 priv->staging_rxon.flags = 0;
7391#endif /* CONFIG_IWLWIFI_HT */
7392
7393 iwl_set_rxon_channel(priv, conf->phymode, conf->channel);
7394
7395 iwl_set_flags_for_phymode(priv, conf->phymode);
7396
7397 /* The list of supported rates and rate mask can be different
7398 * for each phymode; since the phymode may have changed, reset
7399 * the rate mask to what mac80211 lists */
7400 iwl_set_rate(priv);
7401
7402 spin_unlock_irqrestore(&priv->lock, flags);
7403
7404#ifdef IEEE80211_CONF_CHANNEL_SWITCH
7405 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
7406 iwl_hw_channel_switch(priv, conf->channel);
7407 mutex_unlock(&priv->mutex);
7408 return 0;
7409 }
7410#endif
7411
7412 iwl_radio_kill_sw(priv, !conf->radio_enabled);
7413
7414 if (!conf->radio_enabled) {
7415 IWL_DEBUG_MAC80211("leave - radio disabled\n");
7416 mutex_unlock(&priv->mutex);
7417 return 0;
7418 }
7419
7420 if (iwl_is_rfkill(priv)) {
7421 IWL_DEBUG_MAC80211("leave - RF kill\n");
7422 mutex_unlock(&priv->mutex);
7423 return -EIO;
7424 }
7425
7426 iwl_set_rate(priv);
7427
7428 if (memcmp(&priv->active_rxon,
7429 &priv->staging_rxon, sizeof(priv->staging_rxon)))
7430 iwl_commit_rxon(priv);
7431 else
7432 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
7433
7434 IWL_DEBUG_MAC80211("leave\n");
7435
7436 mutex_unlock(&priv->mutex);
7437
7438 return 0;
7439}
7440
7441static void iwl_config_ap(struct iwl_priv *priv)
7442{
7443 int rc = 0;
7444
7445 if (priv->status & STATUS_EXIT_PENDING)
7446 return;
7447
7448 /* The following should be done only at AP bring up */
7449 if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
7450
7451 /* RXON - unassoc (to set timing command) */
7452 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7453 iwl_commit_rxon(priv);
7454
7455 /* RXON Timing */
7456 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
7457 iwl_setup_rxon_timing(priv);
7458 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7459 sizeof(priv->rxon_timing), &priv->rxon_timing);
7460 if (rc)
7461 IWL_WARNING("REPLY_RXON_TIMING failed - "
7462 "Attempting to continue.\n");
7463
7464 iwl4965_set_rxon_chain(priv);
7465
7466 /* FIXME: what should be the assoc_id for AP? */
7467 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7468 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7469 priv->staging_rxon.flags |=
7470 RXON_FLG_SHORT_PREAMBLE_MSK;
7471 else
7472 priv->staging_rxon.flags &=
7473 ~RXON_FLG_SHORT_PREAMBLE_MSK;
7474
7475 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7476 if (priv->assoc_capability &
7477 WLAN_CAPABILITY_SHORT_SLOT_TIME)
7478 priv->staging_rxon.flags |=
7479 RXON_FLG_SHORT_SLOT_MSK;
7480 else
7481 priv->staging_rxon.flags &=
7482 ~RXON_FLG_SHORT_SLOT_MSK;
7483
7484 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7485 priv->staging_rxon.flags &=
7486 ~RXON_FLG_SHORT_SLOT_MSK;
7487 }
7488 /* restore RXON assoc */
7489 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7490 iwl_commit_rxon(priv);
7491#ifdef CONFIG_IWLWIFI_QOS
7492 iwl_activate_qos(priv, 1);
7493#endif
7494 iwl_rxon_add_station(priv, BROADCAST_ADDR, 0);
7495 iwl_send_beacon_cmd(priv);
7496 } else
7497 iwl_send_beacon_cmd(priv);
7498
7499 /* FIXME - we need to add code here to detect a totally new
7500 * configuration, reset the AP, unassoc, rxon timing, assoc,
7501 * clear sta table, add BCAST sta... */
7502}
7503
7504static int iwl_mac_config_interface(struct ieee80211_hw *hw, int if_id,
7505 struct ieee80211_if_conf *conf)
7506{
7507 struct iwl_priv *priv = hw->priv;
0795af57 7508 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 7509 unsigned long flags;
7510 int rc;
7511
7512 if (conf == NULL)
7513 return -EIO;
7514
7515 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
7516 (!conf->beacon || !conf->ssid_len)) {
7517 IWL_DEBUG_MAC80211
7518 ("Leaving in AP mode because HostAPD is not ready.\n");
7519 return 0;
7520 }
7521
7522 mutex_lock(&priv->mutex);
7523
7524 IWL_DEBUG_MAC80211("enter: interface id %d\n", if_id);
7525 if (conf->bssid)
0795af57
JP		 7526 IWL_DEBUG_MAC80211("bssid: %s\n",
7527 print_mac(mac, conf->bssid));
b481de9c
ZY		 7528
7529 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
7530 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
7531 IWL_DEBUG_MAC80211("leave - scanning\n");
7532 mutex_unlock(&priv->mutex);
7533 return 0;
7534 }
7535
7536 if (priv->interface_id != if_id) {
7537 IWL_DEBUG_MAC80211("leave - interface_id != if_id\n");
7538 mutex_unlock(&priv->mutex);
7539 return 0;
7540 }
7541
7542 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7543 if (!conf->bssid) {
7544 conf->bssid = priv->mac_addr;
7545 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
0795af57
JP		 7546 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
7547 print_mac(mac, conf->bssid));
b481de9c
ZY		 7548 }
7549 if (priv->ibss_beacon)
7550 dev_kfree_skb(priv->ibss_beacon);
7551
7552 priv->ibss_beacon = conf->beacon;
7553 }
7554
7555 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
7556 !is_multicast_ether_addr(conf->bssid)) {
7557 /* If there is currently a HW scan going on in the background
7558 * then we need to cancel it else the RXON below will fail. */
7559 if (iwl_scan_cancel_timeout(priv, 100)) {
7560 IWL_WARNING("Aborted scan still in progress "
7561 "after 100ms\n");
7562 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
7563 mutex_unlock(&priv->mutex);
7564 return -EAGAIN;
7565 }
7566 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
7567
7568 /* TODO: Audit driver for usage of these members and see
7569 * if mac80211 deprecates them (priv->bssid looks like it
7570 * shouldn't be there, but I haven't scanned the IBSS code
7571 * to verify) - jpk */
7572 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
7573
7574 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7575 iwl_config_ap(priv);
7576 else {
7577 priv->staging_rxon.filter_flags |=
7578 RXON_FILTER_ASSOC_MSK;
7579 rc = iwl_commit_rxon(priv);
7580 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
7581 iwl_rxon_add_station(
7582 priv, priv->active_rxon.bssid_addr, 1);
7583 }
7584
7585 } else {
7586 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7587 iwl_commit_rxon(priv);
7588 }
7589
7590 spin_lock_irqsave(&priv->lock, flags);
7591 if (!conf->ssid_len)
7592 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7593 else
7594 memcpy(priv->essid, conf->ssid, conf->ssid_len);
7595
7596 priv->essid_len = conf->ssid_len;
7597 spin_unlock_irqrestore(&priv->lock, flags);
7598
7599 IWL_DEBUG_MAC80211("leave\n");
7600 mutex_unlock(&priv->mutex);
7601
7602 return 0;
7603}
7604
7605static void iwl_mac_remove_interface(struct ieee80211_hw *hw,
7606 struct ieee80211_if_init_conf *conf)
7607{
7608 struct iwl_priv *priv = hw->priv;
7609
7610 IWL_DEBUG_MAC80211("enter\n");
7611
7612 mutex_lock(&priv->mutex);
7613 if (priv->interface_id == conf->if_id) {
7614 priv->interface_id = 0;
7615 memset(priv->bssid, 0, ETH_ALEN);
7616 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7617 priv->essid_len = 0;
7618 }
7619 mutex_unlock(&priv->mutex);
7620
7621 IWL_DEBUG_MAC80211("leave\n");
7622
7623}
7624
7625#define IWL_DELAY_NEXT_SCAN (HZ*2)
7626static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
7627{
7628 int rc = 0;
7629 unsigned long flags;
7630 struct iwl_priv *priv = hw->priv;
7631
7632 IWL_DEBUG_MAC80211("enter\n");
7633
7634 spin_lock_irqsave(&priv->lock, flags);
7635
7636 if (!iwl_is_ready_rf(priv)) {
7637 rc = -EIO;
7638 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
7639 goto out_unlock;
7640 }
7641
7642 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
7643 rc = -EIO;
7644 IWL_ERROR("ERROR: APs don't scan\n");
7645 goto out_unlock;
7646 }
7647
7648 /* if we just finished scan ask for delay */
7649 if (priv->last_scan_jiffies &&
7650 time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN,
7651 jiffies)) {
7652 rc = -EAGAIN;
7653 goto out_unlock;
7654 }
7655 if (len) {
7656 IWL_DEBUG_SCAN("direct scan for "
7657 "%s [%d]\n ",
7658 iwl_escape_essid(ssid, len), (int)len);
7659
7660 priv->one_direct_scan = 1;
7661 priv->direct_ssid_len = (u8)
7662 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
7663 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
7664 }
7665
7666 rc = iwl_scan_initiate(priv);
7667
7668 IWL_DEBUG_MAC80211("leave\n");
7669
7670out_unlock:
7671 spin_unlock_irqrestore(&priv->lock, flags);
7672
7673 return rc;
7674}
7675
7676static int iwl_mac_set_key(struct ieee80211_hw *hw, set_key_cmd cmd,
7677 const u8 *local_addr, const u8 *addr,
7678 struct ieee80211_key_conf *key)
7679{
7680 struct iwl_priv *priv = hw->priv;
0795af57 7681 DECLARE_MAC_BUF(mac);
b481de9c
ZY		 7682 int rc = 0;
7683 u8 sta_id;
7684
7685 IWL_DEBUG_MAC80211("enter\n");
7686
7687 if (!iwl_param_hwcrypto) {
7688 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7689 return -EOPNOTSUPP;
7690 }
7691
7692 if (is_zero_ether_addr(addr))
7693 /* only support pairwise keys */
7694 return -EOPNOTSUPP;
7695
7696 sta_id = iwl_hw_find_station(priv, addr);
7697 if (sta_id == IWL_INVALID_STATION) {
0795af57
JP		 7698 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7699 print_mac(mac, addr));
b481de9c
ZY		 7700 return -EINVAL;
7701 }
7702
7703 mutex_lock(&priv->mutex);
7704
7705 switch (cmd) {
7706 case SET_KEY:
7707 rc = iwl_update_sta_key_info(priv, key, sta_id);
7708 if (!rc) {
7709 iwl_set_rxon_hwcrypto(priv, 1);
7710 iwl_commit_rxon(priv);
7711 key->hw_key_idx = sta_id;
7712 IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7713 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
7714 }
7715 break;
7716 case DISABLE_KEY:
7717 rc = iwl_clear_sta_key_info(priv, sta_id);
7718 if (!rc) {
7719 iwl_set_rxon_hwcrypto(priv, 0);
7720 iwl_commit_rxon(priv);
7721 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7722 }
7723 break;
7724 default:
7725 rc = -EINVAL;
7726 }
7727
7728 IWL_DEBUG_MAC80211("leave\n");
7729 mutex_unlock(&priv->mutex);
7730
7731 return rc;
7732}
7733
7734static int iwl_mac_conf_tx(struct ieee80211_hw *hw, int queue,
7735 const struct ieee80211_tx_queue_params *params)
7736{
7737 struct iwl_priv *priv = hw->priv;
7738#ifdef CONFIG_IWLWIFI_QOS
7739 unsigned long flags;
7740 int q;
7741#endif /* CONFIG_IWL_QOS */
7742
7743 IWL_DEBUG_MAC80211("enter\n");
7744
7745 if (!iwl_is_ready_rf(priv)) {
7746 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7747 return -EIO;
7748 }
7749
7750 if (queue >= AC_NUM) {
7751 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7752 return 0;
7753 }
7754
7755#ifdef CONFIG_IWLWIFI_QOS
7756 if (!priv->qos_data.qos_enable) {
7757 priv->qos_data.qos_active = 0;
7758 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7759 return 0;
7760 }
7761 q = AC_NUM - 1 - queue;
7762
7763 spin_lock_irqsave(&priv->lock, flags);
7764
7765 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
7766 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
7767 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
7768 priv->qos_data.def_qos_parm.ac[q].edca_txop =
7769 cpu_to_le16((params->burst_time * 100));
7770
7771 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
7772 priv->qos_data.qos_active = 1;
7773
7774 spin_unlock_irqrestore(&priv->lock, flags);
7775
7776 mutex_lock(&priv->mutex);
7777 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7778 iwl_activate_qos(priv, 1);
7779 else if (priv->assoc_id && iwl_is_associated(priv))
7780 iwl_activate_qos(priv, 0);
7781
7782 mutex_unlock(&priv->mutex);
7783
7784#endif /*CONFIG_IWLWIFI_QOS */
7785
7786 IWL_DEBUG_MAC80211("leave\n");
7787 return 0;
7788}
7789
7790static int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
7791 struct ieee80211_tx_queue_stats *stats)
7792{
7793 struct iwl_priv *priv = hw->priv;
7794 int i, avail;
7795 struct iwl_tx_queue *txq;
7796 struct iwl_queue *q;
7797 unsigned long flags;
7798
7799 IWL_DEBUG_MAC80211("enter\n");
7800
7801 if (!iwl_is_ready_rf(priv)) {
7802 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7803 return -EIO;
7804 }
7805
7806 spin_lock_irqsave(&priv->lock, flags);
7807
7808 for (i = 0; i < AC_NUM; i++) {
7809 txq = &priv->txq[i];
7810 q = &txq->q;
7811 avail = iwl_queue_space(q);
7812
7813 stats->data[i].len = q->n_window - avail;
7814 stats->data[i].limit = q->n_window - q->high_mark;
7815 stats->data[i].count = q->n_window;
7816
7817 }
7818 spin_unlock_irqrestore(&priv->lock, flags);
7819
7820 IWL_DEBUG_MAC80211("leave\n");
7821
7822 return 0;
7823}
7824
7825static int iwl_mac_get_stats(struct ieee80211_hw *hw,
7826 struct ieee80211_low_level_stats *stats)
7827{
7828 IWL_DEBUG_MAC80211("enter\n");
7829 IWL_DEBUG_MAC80211("leave\n");
7830
7831 return 0;
7832}
7833
7834static u64 iwl_mac_get_tsf(struct ieee80211_hw *hw)
7835{
7836 IWL_DEBUG_MAC80211("enter\n");
7837 IWL_DEBUG_MAC80211("leave\n");
7838
7839 return 0;
7840}
7841
7842static void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
7843{
7844 struct iwl_priv *priv = hw->priv;
7845 unsigned long flags;
7846
7847 mutex_lock(&priv->mutex);
7848 IWL_DEBUG_MAC80211("enter\n");
7849
7850 priv->lq_mngr.lq_ready = 0;
7851#ifdef CONFIG_IWLWIFI_HT
7852 spin_lock_irqsave(&priv->lock, flags);
7853 memset(&priv->current_assoc_ht, 0, sizeof(struct sta_ht_info));
7854 spin_unlock_irqrestore(&priv->lock, flags);
7855#ifdef CONFIG_IWLWIFI_HT_AGG
7856/* if (priv->lq_mngr.agg_ctrl.granted_ba)
7857 iwl4965_turn_off_agg(priv, TID_ALL_SPECIFIED);*/
7858
7859 memset(&(priv->lq_mngr.agg_ctrl), 0, sizeof(struct iwl_agg_control));
7860 priv->lq_mngr.agg_ctrl.tid_traffic_load_threshold = 10;
7861 priv->lq_mngr.agg_ctrl.ba_timeout = 5000;
7862 priv->lq_mngr.agg_ctrl.auto_agg = 1;
7863
7864 if (priv->lq_mngr.agg_ctrl.auto_agg)
7865 priv->lq_mngr.agg_ctrl.requested_ba = TID_ALL_ENABLED;
7866#endif /*CONFIG_IWLWIFI_HT_AGG */
7867#endif /* CONFIG_IWLWIFI_HT */
7868
7869#ifdef CONFIG_IWLWIFI_QOS
7870 iwl_reset_qos(priv);
7871#endif
7872
7873 cancel_delayed_work(&priv->post_associate);
7874
7875 spin_lock_irqsave(&priv->lock, flags);
7876 priv->assoc_id = 0;
7877 priv->assoc_capability = 0;
7878 priv->call_post_assoc_from_beacon = 0;
7879 priv->assoc_station_added = 0;
7880
7881 /* new association get rid of ibss beacon skb */
7882 if (priv->ibss_beacon)
7883 dev_kfree_skb(priv->ibss_beacon);
7884
7885 priv->ibss_beacon = NULL;
7886
7887 priv->beacon_int = priv->hw->conf.beacon_int;
7888 priv->timestamp1 = 0;
7889 priv->timestamp0 = 0;
7890 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
7891 priv->beacon_int = 0;
7892
7893 spin_unlock_irqrestore(&priv->lock, flags);
7894
7895 /* Per mac80211.h: This is only used in IBSS mode... */
7896 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7897 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7898 mutex_unlock(&priv->mutex);
7899 return;
7900 }
7901
7902 if (!iwl_is_ready_rf(priv)) {
7903 IWL_DEBUG_MAC80211("leave - not ready\n");
7904 mutex_unlock(&priv->mutex);
7905 return;
7906 }
7907
7908 priv->only_active_channel = 0;
7909
7910 iwl_set_rate(priv);
7911
7912 mutex_unlock(&priv->mutex);
7913
7914 IWL_DEBUG_MAC80211("leave\n");
7915
7916}
7917
7918static int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
7919 struct ieee80211_tx_control *control)
7920{
7921 struct iwl_priv *priv = hw->priv;
7922 unsigned long flags;
7923
7924 mutex_lock(&priv->mutex);
7925 IWL_DEBUG_MAC80211("enter\n");
7926
7927 if (!iwl_is_ready_rf(priv)) {
7928 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7929 mutex_unlock(&priv->mutex);
7930 return -EIO;
7931 }
7932
7933 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7934 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7935 mutex_unlock(&priv->mutex);
7936 return -EIO;
7937 }
7938
7939 spin_lock_irqsave(&priv->lock, flags);
7940
7941 if (priv->ibss_beacon)
7942 dev_kfree_skb(priv->ibss_beacon);
7943
7944 priv->ibss_beacon = skb;
7945
7946 priv->assoc_id = 0;
7947
7948 IWL_DEBUG_MAC80211("leave\n");
7949 spin_unlock_irqrestore(&priv->lock, flags);
7950
7951#ifdef CONFIG_IWLWIFI_QOS
7952 iwl_reset_qos(priv);
7953#endif
7954
7955 queue_work(priv->workqueue, &priv->post_associate.work);
7956
7957 mutex_unlock(&priv->mutex);
7958
7959 return 0;
7960}
7961
7962#ifdef CONFIG_IWLWIFI_HT
7963union ht_cap_info {
7964 struct {
7965 u16 advanced_coding_cap :1;
7966 u16 supported_chan_width_set :1;
7967 u16 mimo_power_save_mode :2;
7968 u16 green_field :1;
7969 u16 short_GI20 :1;
7970 u16 short_GI40 :1;
7971 u16 tx_stbc :1;
7972 u16 rx_stbc :1;
7973 u16 beam_forming :1;
7974 u16 delayed_ba :1;
7975 u16 maximal_amsdu_size :1;
7976 u16 cck_mode_at_40MHz :1;
7977 u16 psmp_support :1;
7978 u16 stbc_ctrl_frame_support :1;
7979 u16 sig_txop_protection_support :1;
7980 };
7981 u16 val;
7982} __attribute__ ((packed));
7983
7984union ht_param_info{
7985 struct {
7986 u8 max_rx_ampdu_factor :2;
7987 u8 mpdu_density :3;
7988 u8 reserved :3;
7989 };
7990 u8 val;
7991} __attribute__ ((packed));
7992
7993union ht_exra_param_info {
7994 struct {
7995 u8 ext_chan_offset :2;
7996 u8 tx_chan_width :1;
7997 u8 rifs_mode :1;
7998 u8 controlled_access_only :1;
7999 u8 service_interval_granularity :3;
8000 };
8001 u8 val;
8002} __attribute__ ((packed));
8003
8004union ht_operation_mode{
8005 struct {
8006 u16 op_mode :2;
8007 u16 non_GF :1;
8008 u16 reserved :13;
8009 };
8010 u16 val;
8011} __attribute__ ((packed));
8012
8013
8014static int sta_ht_info_init(struct ieee80211_ht_capability *ht_cap,
8015 struct ieee80211_ht_additional_info *ht_extra,
8016 struct sta_ht_info *ht_info_ap,
8017 struct sta_ht_info *ht_info)
8018{
8019 union ht_cap_info cap;
8020 union ht_operation_mode op_mode;
8021 union ht_param_info param_info;
8022 union ht_exra_param_info extra_param_info;
8023
8024 IWL_DEBUG_MAC80211("enter: \n");
8025
8026 if (!ht_info) {
8027 IWL_DEBUG_MAC80211("leave: ht_info is NULL\n");
8028 return -1;
8029 }
8030
8031 if (ht_cap) {
8032 cap.val = (u16) le16_to_cpu(ht_cap->capabilities_info);
8033 param_info.val = ht_cap->mac_ht_params_info;
8034 ht_info->is_ht = 1;
8035 if (cap.short_GI20)
8036 ht_info->sgf |= 0x1;
8037 if (cap.short_GI40)
8038 ht_info->sgf |= 0x2;
8039 ht_info->is_green_field = cap.green_field;
8040 ht_info->max_amsdu_size = cap.maximal_amsdu_size;
8041 ht_info->supported_chan_width = cap.supported_chan_width_set;
8042 ht_info->tx_mimo_ps_mode = cap.mimo_power_save_mode;
8043 memcpy(ht_info->supp_rates, ht_cap->supported_mcs_set, 16);
8044
8045 ht_info->ampdu_factor = param_info.max_rx_ampdu_factor;
8046 ht_info->mpdu_density = param_info.mpdu_density;
8047
8048 IWL_DEBUG_MAC80211("SISO mask 0x%X MIMO mask 0x%X \n",
8049 ht_cap->supported_mcs_set[0],
8050 ht_cap->supported_mcs_set[1]);
8051
8052 if (ht_info_ap) {
8053 ht_info->control_channel = ht_info_ap->control_channel;
8054 ht_info->extension_chan_offset =
8055 ht_info_ap->extension_chan_offset;
8056 ht_info->tx_chan_width = ht_info_ap->tx_chan_width;
8057 ht_info->operating_mode = ht_info_ap->operating_mode;
8058 }
8059
8060 if (ht_extra) {
8061 extra_param_info.val = ht_extra->ht_param;
8062 ht_info->control_channel = ht_extra->control_chan;
8063 ht_info->extension_chan_offset =
8064 extra_param_info.ext_chan_offset;
8065 ht_info->tx_chan_width = extra_param_info.tx_chan_width;
8066 op_mode.val = (u16)
8067 le16_to_cpu(ht_extra->operation_mode);
8068 ht_info->operating_mode = op_mode.op_mode;
8069 IWL_DEBUG_MAC80211("control channel %d\n",
8070 ht_extra->control_chan);
8071 }
8072 } else
8073 ht_info->is_ht = 0;
8074
8075 IWL_DEBUG_MAC80211("leave\n");
8076 return 0;
8077}
8078
8079static int iwl_mac_conf_ht(struct ieee80211_hw *hw,
8080 struct ieee80211_ht_capability *ht_cap,
8081 struct ieee80211_ht_additional_info *ht_extra)
8082{
8083 struct iwl_priv *priv = hw->priv;
8084 int rs;
8085
8086 IWL_DEBUG_MAC80211("enter: \n");
8087
8088 rs = sta_ht_info_init(ht_cap, ht_extra, NULL, &priv->current_assoc_ht);
8089 iwl4965_set_rxon_chain(priv);
8090
8091 if (priv && priv->assoc_id &&
8092 (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
8093 unsigned long flags;
8094
8095 spin_lock_irqsave(&priv->lock, flags);
8096 if (priv->beacon_int)
8097 queue_work(priv->workqueue, &priv->post_associate.work);
8098 else
8099 priv->call_post_assoc_from_beacon = 1;
8100 spin_unlock_irqrestore(&priv->lock, flags);
8101 }
8102
8103 IWL_DEBUG_MAC80211("leave: control channel %d\n",
8104 ht_extra->control_chan);
8105 return rs;
8106
8107}
8108
8109static void iwl_set_ht_capab(struct ieee80211_hw *hw,
8110 struct ieee80211_ht_capability *ht_cap,
8111 u8 use_wide_chan)
8112{
8113 union ht_cap_info cap;
8114 union ht_param_info param_info;
8115
8116 memset(&cap, 0, sizeof(union ht_cap_info));
8117 memset(&param_info, 0, sizeof(union ht_param_info));
8118
8119 cap.maximal_amsdu_size = HT_IE_MAX_AMSDU_SIZE_4K;
8120 cap.green_field = 1;
8121 cap.short_GI20 = 1;
8122 cap.short_GI40 = 1;
8123 cap.supported_chan_width_set = use_wide_chan;
8124 cap.mimo_power_save_mode = 0x3;
8125
8126 param_info.max_rx_ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
8127 param_info.mpdu_density = CFG_HT_MPDU_DENSITY_DEF;
8128 ht_cap->capabilities_info = (__le16) cpu_to_le16(cap.val);
8129 ht_cap->mac_ht_params_info = (u8) param_info.val;
8130
8131 ht_cap->supported_mcs_set[0] = 0xff;
8132 ht_cap->supported_mcs_set[1] = 0xff;
8133 ht_cap->supported_mcs_set[4] =
8134 (cap.supported_chan_width_set) ? 0x1: 0x0;
8135}
8136
8137static void iwl_mac_get_ht_capab(struct ieee80211_hw *hw,
8138 struct ieee80211_ht_capability *ht_cap)
8139{
8140 u8 use_wide_channel = 1;
8141 struct iwl_priv *priv = hw->priv;
8142
8143 IWL_DEBUG_MAC80211("enter: \n");
8144 if (priv->channel_width != IWL_CHANNEL_WIDTH_40MHZ)
8145 use_wide_channel = 0;
8146
8147 /* no fat tx allowed on 2.4GHZ */
8148 if (priv->phymode != MODE_IEEE80211A)
8149 use_wide_channel = 0;
8150
8151 iwl_set_ht_capab(hw, ht_cap, use_wide_channel);
8152 IWL_DEBUG_MAC80211("leave: \n");
8153}
8154#endif /*CONFIG_IWLWIFI_HT*/
8155
8156/*****************************************************************************
8157 *
8158 * sysfs attributes
8159 *
8160 *****************************************************************************/
8161
8162#ifdef CONFIG_IWLWIFI_DEBUG
8163
8164/*
8165 * The following adds a new attribute to the sysfs representation
8166 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
8167 * used for controlling the debug level.
8168 *
8169 * See the level definitions in iwl for details.
8170 */
8171
8172static ssize_t show_debug_level(struct device_driver *d, char *buf)
8173{
8174 return sprintf(buf, "0x%08X\n", iwl_debug_level);
8175}
8176static ssize_t store_debug_level(struct device_driver *d,
8177 const char *buf, size_t count)
8178{
8179 char *p = (char *)buf;
8180 u32 val;
8181
8182 val = simple_strtoul(p, &p, 0);
8183 if (p == buf)
8184 printk(KERN_INFO DRV_NAME
8185 ": %s is not in hex or decimal form.\n", buf);
8186 else
8187 iwl_debug_level = val;
8188
8189 return strnlen(buf, count);
8190}
8191
8192static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
8193 show_debug_level, store_debug_level);
8194
8195#endif /* CONFIG_IWLWIFI_DEBUG */
8196
8197static ssize_t show_rf_kill(struct device *d,
8198 struct device_attribute *attr, char *buf)
8199{
8200 /*
8201 * 0 - RF kill not enabled
8202 * 1 - SW based RF kill active (sysfs)
8203 * 2 - HW based RF kill active
8204 * 3 - Both HW and SW based RF kill active
8205 */
8206 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8207 int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) |
8208 (test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0);
8209
8210 return sprintf(buf, "%i\n", val);
8211}
8212
8213static ssize_t store_rf_kill(struct device *d,
8214 struct device_attribute *attr,
8215 const char *buf, size_t count)
8216{
8217 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8218
8219 mutex_lock(&priv->mutex);
8220 iwl_radio_kill_sw(priv, buf[0] == '1');
8221 mutex_unlock(&priv->mutex);
8222
8223 return count;
8224}
8225
8226static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);
8227
8228static ssize_t show_temperature(struct device *d,
8229 struct device_attribute *attr, char *buf)
8230{
8231 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8232
8233 if (!iwl_is_alive(priv))
8234 return -EAGAIN;
8235
8236 return sprintf(buf, "%d\n", iwl_hw_get_temperature(priv));
8237}
8238
8239static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
8240
8241static ssize_t show_rs_window(struct device *d,
8242 struct device_attribute *attr,
8243 char *buf)
8244{
8245 struct iwl_priv *priv = d->driver_data;
8246 return iwl_fill_rs_info(priv->hw, buf, IWL_AP_ID);
8247}
8248static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
8249
8250static ssize_t show_tx_power(struct device *d,
8251 struct device_attribute *attr, char *buf)
8252{
8253 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8254 return sprintf(buf, "%d\n", priv->user_txpower_limit);
8255}
8256
8257static ssize_t store_tx_power(struct device *d,
8258 struct device_attribute *attr,
8259 const char *buf, size_t count)
8260{
8261 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8262 char *p = (char *)buf;
8263 u32 val;
8264
8265 val = simple_strtoul(p, &p, 10);
8266 if (p == buf)
8267 printk(KERN_INFO DRV_NAME
8268 ": %s is not in decimal form.\n", buf);
8269 else
8270 iwl_hw_reg_set_txpower(priv, val);
8271
8272 return count;
8273}
8274
8275static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
8276
8277static ssize_t show_flags(struct device *d,
8278 struct device_attribute *attr, char *buf)
8279{
8280 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8281
8282 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
8283}
8284
8285static ssize_t store_flags(struct device *d,
8286 struct device_attribute *attr,
8287 const char *buf, size_t count)
8288{
8289 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8290 u32 flags = simple_strtoul(buf, NULL, 0);
8291
8292 mutex_lock(&priv->mutex);
8293 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
8294 /* Cancel any currently running scans... */
8295 if (iwl_scan_cancel_timeout(priv, 100))
8296 IWL_WARNING("Could not cancel scan.\n");
8297 else {
8298 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
8299 flags);
8300 priv->staging_rxon.flags = cpu_to_le32(flags);
8301 iwl_commit_rxon(priv);
8302 }
8303 }
8304 mutex_unlock(&priv->mutex);
8305
8306 return count;
8307}
8308
8309static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
8310
8311static ssize_t show_filter_flags(struct device *d,
8312 struct device_attribute *attr, char *buf)
8313{
8314 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8315
8316 return sprintf(buf, "0x%04X\n",
8317 le32_to_cpu(priv->active_rxon.filter_flags));
8318}
8319
8320static ssize_t store_filter_flags(struct device *d,
8321 struct device_attribute *attr,
8322 const char *buf, size_t count)
8323{
8324 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8325 u32 filter_flags = simple_strtoul(buf, NULL, 0);
8326
8327 mutex_lock(&priv->mutex);
8328 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
8329 /* Cancel any currently running scans... */
8330 if (iwl_scan_cancel_timeout(priv, 100))
8331 IWL_WARNING("Could not cancel scan.\n");
8332 else {
8333 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
8334 "0x%04X\n", filter_flags);
8335 priv->staging_rxon.filter_flags =
8336 cpu_to_le32(filter_flags);
8337 iwl_commit_rxon(priv);
8338 }
8339 }
8340 mutex_unlock(&priv->mutex);
8341
8342 return count;
8343}
8344
8345static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
8346 store_filter_flags);
8347
8348static ssize_t show_tune(struct device *d,
8349 struct device_attribute *attr, char *buf)
8350{
8351 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8352
8353 return sprintf(buf, "0x%04X\n",
8354 (priv->phymode << 8) |
8355 le16_to_cpu(priv->active_rxon.channel));
8356}
8357
8358static void iwl_set_flags_for_phymode(struct iwl_priv *priv, u8 phymode);
8359
8360static ssize_t store_tune(struct device *d,
8361 struct device_attribute *attr,
8362 const char *buf, size_t count)
8363{
8364 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8365 char *p = (char *)buf;
8366 u16 tune = simple_strtoul(p, &p, 0);
8367 u8 phymode = (tune >> 8) & 0xff;
8368 u16 channel = tune & 0xff;
8369
8370 IWL_DEBUG_INFO("Tune request to:%d channel:%d\n", phymode, channel);
8371
8372 mutex_lock(&priv->mutex);
8373 if ((le16_to_cpu(priv->staging_rxon.channel) != channel) ||
8374 (priv->phymode != phymode)) {
8375 const struct iwl_channel_info *ch_info;
8376
8377 ch_info = iwl_get_channel_info(priv, phymode, channel);
8378 if (!ch_info) {
8379 IWL_WARNING("Requested invalid phymode/channel "
8380 "combination: %d %d\n", phymode, channel);
8381 mutex_unlock(&priv->mutex);
8382 return -EINVAL;
8383 }
8384
8385 /* Cancel any currently running scans... */
8386 if (iwl_scan_cancel_timeout(priv, 100))
8387 IWL_WARNING("Could not cancel scan.\n");
8388 else {
8389 IWL_DEBUG_INFO("Committing phymode and "
8390 "rxon.channel = %d %d\n",
8391 phymode, channel);
8392
8393 iwl_set_rxon_channel(priv, phymode, channel);
8394 iwl_set_flags_for_phymode(priv, phymode);
8395
8396 iwl_set_rate(priv);
8397 iwl_commit_rxon(priv);
8398 }
8399 }
8400 mutex_unlock(&priv->mutex);
8401
8402 return count;
8403}
8404
8405static DEVICE_ATTR(tune, S_IWUSR | S_IRUGO, show_tune, store_tune);
8406
8407#ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
8408
8409static ssize_t show_measurement(struct device *d,
8410 struct device_attribute *attr, char *buf)
8411{
8412 struct iwl_priv *priv = dev_get_drvdata(d);
8413 struct iwl_spectrum_notification measure_report;
8414 u32 size = sizeof(measure_report), len = 0, ofs = 0;
8415 u8 *data = (u8 *) & measure_report;
8416 unsigned long flags;
8417
8418 spin_lock_irqsave(&priv->lock, flags);
8419 if (!(priv->measurement_status & MEASUREMENT_READY)) {
8420 spin_unlock_irqrestore(&priv->lock, flags);
8421 return 0;
8422 }
8423 memcpy(&measure_report, &priv->measure_report, size);
8424 priv->measurement_status = 0;
8425 spin_unlock_irqrestore(&priv->lock, flags);
8426
8427 while (size && (PAGE_SIZE - len)) {
8428 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8429 PAGE_SIZE - len, 1);
8430 len = strlen(buf);
8431 if (PAGE_SIZE - len)
8432 buf[len++] = '\n';
8433
8434 ofs += 16;
8435 size -= min(size, 16U);
8436 }
8437
8438 return len;
8439}
8440
8441static ssize_t store_measurement(struct device *d,
8442 struct device_attribute *attr,
8443 const char *buf, size_t count)
8444{
8445 struct iwl_priv *priv = dev_get_drvdata(d);
8446 struct ieee80211_measurement_params params = {
8447 .channel = le16_to_cpu(priv->active_rxon.channel),
8448 .start_time = cpu_to_le64(priv->last_tsf),
8449 .duration = cpu_to_le16(1),
8450 };
8451 u8 type = IWL_MEASURE_BASIC;
8452 u8 buffer[32];
8453 u8 channel;
8454
8455 if (count) {
8456 char *p = buffer;
8457 strncpy(buffer, buf, min(sizeof(buffer), count));
8458 channel = simple_strtoul(p, NULL, 0);
8459 if (channel)
8460 params.channel = channel;
8461
8462 p = buffer;
8463 while (*p && *p != ' ')
8464 p++;
8465 if (*p)
8466 type = simple_strtoul(p + 1, NULL, 0);
8467 }
8468
8469 IWL_DEBUG_INFO("Invoking measurement of type %d on "
8470 "channel %d (for '%s')\n", type, params.channel, buf);
8471 iwl_get_measurement(priv, &params, type);
8472
8473 return count;
8474}
8475
8476static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
8477 show_measurement, store_measurement);
8478#endif /* CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT */
8479
8480static ssize_t store_retry_rate(struct device *d,
8481 struct device_attribute *attr,
8482 const char *buf, size_t count)
8483{
8484 struct iwl_priv *priv = dev_get_drvdata(d);
8485
8486 priv->retry_rate = simple_strtoul(buf, NULL, 0);
8487 if (priv->retry_rate <= 0)
8488 priv->retry_rate = 1;
8489
8490 return count;
8491}
8492
8493static ssize_t show_retry_rate(struct device *d,
8494 struct device_attribute *attr, char *buf)
8495{
8496 struct iwl_priv *priv = dev_get_drvdata(d);
8497 return sprintf(buf, "%d", priv->retry_rate);
8498}
8499
8500static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
8501 store_retry_rate);
8502
8503static ssize_t store_power_level(struct device *d,
8504 struct device_attribute *attr,
8505 const char *buf, size_t count)
8506{
8507 struct iwl_priv *priv = dev_get_drvdata(d);
8508 int rc;
8509 int mode;
8510
8511 mode = simple_strtoul(buf, NULL, 0);
8512 mutex_lock(&priv->mutex);
8513
8514 if (!iwl_is_ready(priv)) {
8515 rc = -EAGAIN;
8516 goto out;
8517 }
8518
8519 if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
8520 mode = IWL_POWER_AC;
8521 else
8522 mode |= IWL_POWER_ENABLED;
8523
8524 if (mode != priv->power_mode) {
8525 rc = iwl_send_power_mode(priv, IWL_POWER_LEVEL(mode));
8526 if (rc) {
8527 IWL_DEBUG_MAC80211("failed setting power mode.\n");
8528 goto out;
8529 }
8530 priv->power_mode = mode;
8531 }
8532
8533 rc = count;
8534
8535 out:
8536 mutex_unlock(&priv->mutex);
8537 return rc;
8538}
8539
8540#define MAX_WX_STRING 80
8541
8542/* Values are in microsecond */
8543static const s32 timeout_duration[] = {
8544 350000,
8545 250000,
8546 75000,
8547 37000,
8548 25000,
8549};
8550static const s32 period_duration[] = {
8551 400000,
8552 700000,
8553 1000000,
8554 1000000,
8555 1000000
8556};
8557
8558static ssize_t show_power_level(struct device *d,
8559 struct device_attribute *attr, char *buf)
8560{
8561 struct iwl_priv *priv = dev_get_drvdata(d);
8562 int level = IWL_POWER_LEVEL(priv->power_mode);
8563 char *p = buf;
8564
8565 p += sprintf(p, "%d ", level);
8566 switch (level) {
8567 case IWL_POWER_MODE_CAM:
8568 case IWL_POWER_AC:
8569 p += sprintf(p, "(AC)");
8570 break;
8571 case IWL_POWER_BATTERY:
8572 p += sprintf(p, "(BATTERY)");
8573 break;
8574 default:
8575 p += sprintf(p,
8576 "(Timeout %dms, Period %dms)",
8577 timeout_duration[level - 1] / 1000,
8578 period_duration[level - 1] / 1000);
8579 }
8580
8581 if (!(priv->power_mode & IWL_POWER_ENABLED))
8582 p += sprintf(p, " OFF\n");
8583 else
8584 p += sprintf(p, " \n");
8585
8586 return (p - buf + 1);
8587
8588}
8589
8590static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
8591 store_power_level);
8592
8593static ssize_t show_channels(struct device *d,
8594 struct device_attribute *attr, char *buf)
8595{
8596 struct iwl_priv *priv = dev_get_drvdata(d);
8597 int len = 0, i;
8598 struct ieee80211_channel *channels = NULL;
8599 const struct ieee80211_hw_mode *hw_mode = NULL;
8600 int count = 0;
8601
8602 if (!iwl_is_ready(priv))
8603 return -EAGAIN;
8604
8605 hw_mode = iwl_get_hw_mode(priv, MODE_IEEE80211G);
8606 if (!hw_mode)
8607 hw_mode = iwl_get_hw_mode(priv, MODE_IEEE80211B);
8608 if (hw_mode) {
8609 channels = hw_mode->channels;
8610 count = hw_mode->num_channels;
8611 }
8612
8613 len +=
8614 sprintf(&buf[len],
8615 "Displaying %d channels in 2.4GHz band "
8616 "(802.11bg):\n", count);
8617
8618 for (i = 0; i < count; i++)
8619 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8620 channels[i].chan,
8621 channels[i].power_level,
8622 channels[i].
8623 flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8624 " (IEEE 802.11h required)" : "",
8625 (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8626 || (channels[i].
8627 flag &
8628 IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8629 ", IBSS",
8630 channels[i].
8631 flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8632 "active/passive" : "passive only");
8633
8634 hw_mode = iwl_get_hw_mode(priv, MODE_IEEE80211A);
8635 if (hw_mode) {
8636 channels = hw_mode->channels;
8637 count = hw_mode->num_channels;
8638 } else {
8639 channels = NULL;
8640 count = 0;
8641 }
8642
8643 len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
8644 "(802.11a):\n", count);
8645
8646 for (i = 0; i < count; i++)
8647 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8648 channels[i].chan,
8649 channels[i].power_level,
8650 channels[i].
8651 flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8652 " (IEEE 802.11h required)" : "",
8653 (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8654 || (channels[i].
8655 flag &
8656 IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8657 ", IBSS",
8658 channels[i].
8659 flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8660 "active/passive" : "passive only");
8661
8662 return len;
8663}
8664
8665static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
8666
8667static ssize_t show_statistics(struct device *d,
8668 struct device_attribute *attr, char *buf)
8669{
8670 struct iwl_priv *priv = dev_get_drvdata(d);
8671 u32 size = sizeof(struct iwl_notif_statistics);
8672 u32 len = 0, ofs = 0;
8673 u8 *data = (u8 *) & priv->statistics;
8674 int rc = 0;
8675
8676 if (!iwl_is_alive(priv))
8677 return -EAGAIN;
8678
8679 mutex_lock(&priv->mutex);
8680 rc = iwl_send_statistics_request(priv);
8681 mutex_unlock(&priv->mutex);
8682
8683 if (rc) {
8684 len = sprintf(buf,
8685 "Error sending statistics request: 0x%08X\n", rc);
8686 return len;
8687 }
8688
8689 while (size && (PAGE_SIZE - len)) {
8690 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8691 PAGE_SIZE - len, 1);
8692 len = strlen(buf);
8693 if (PAGE_SIZE - len)
8694 buf[len++] = '\n';
8695
8696 ofs += 16;
8697 size -= min(size, 16U);
8698 }
8699
8700 return len;
8701}
8702
8703static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
8704
8705static ssize_t show_antenna(struct device *d,
8706 struct device_attribute *attr, char *buf)
8707{
8708 struct iwl_priv *priv = dev_get_drvdata(d);
8709
8710 if (!iwl_is_alive(priv))
8711 return -EAGAIN;
8712
8713 return sprintf(buf, "%d\n", priv->antenna);
8714}
8715
8716static ssize_t store_antenna(struct device *d,
8717 struct device_attribute *attr,
8718 const char *buf, size_t count)
8719{
8720 int ant;
8721 struct iwl_priv *priv = dev_get_drvdata(d);
8722
8723 if (count == 0)
8724 return 0;
8725
8726 if (sscanf(buf, "%1i", &ant) != 1) {
8727 IWL_DEBUG_INFO("not in hex or decimal form.\n");
8728 return count;
8729 }
8730
8731 if ((ant >= 0) && (ant <= 2)) {
8732 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
8733 priv->antenna = (enum iwl_antenna)ant;
8734 } else
8735 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
8736
8737
8738 return count;
8739}
8740
8741static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
8742
8743static ssize_t show_status(struct device *d,
8744 struct device_attribute *attr, char *buf)
8745{
8746 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8747 if (!iwl_is_alive(priv))
8748 return -EAGAIN;
8749 return sprintf(buf, "0x%08x\n", (int)priv->status);
8750}
8751
8752static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
8753
8754static ssize_t dump_error_log(struct device *d,
8755 struct device_attribute *attr,
8756 const char *buf, size_t count)
8757{
8758 char *p = (char *)buf;
8759
8760 if (p[0] == '1')
8761 iwl_dump_nic_error_log((struct iwl_priv *)d->driver_data);
8762
8763 return strnlen(buf, count);
8764}
8765
8766static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
8767
8768static ssize_t dump_event_log(struct device *d,
8769 struct device_attribute *attr,
8770 const char *buf, size_t count)
8771{
8772 char *p = (char *)buf;
8773
8774 if (p[0] == '1')
8775 iwl_dump_nic_event_log((struct iwl_priv *)d->driver_data);
8776
8777 return strnlen(buf, count);
8778}
8779
8780static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
8781
8782/*****************************************************************************
8783 *
8784 * driver setup and teardown
8785 *
8786 *****************************************************************************/
8787
8788static void iwl_setup_deferred_work(struct iwl_priv *priv)
8789{
8790 priv->workqueue = create_workqueue(DRV_NAME);
8791
8792 init_waitqueue_head(&priv->wait_command_queue);
8793
8794 INIT_WORK(&priv->up, iwl_bg_up);
8795 INIT_WORK(&priv->restart, iwl_bg_restart);
8796 INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
8797 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
8798 INIT_WORK(&priv->request_scan, iwl_bg_request_scan);
8799 INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
8800 INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
8801 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
8802 INIT_DELAYED_WORK(&priv->post_associate, iwl_bg_post_associate);
8803 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
8804 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
8805 INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
8806
8807 iwl_hw_setup_deferred_work(priv);
8808
8809 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
8810 iwl_irq_tasklet, (unsigned long)priv);
8811}
8812
8813static void iwl_cancel_deferred_work(struct iwl_priv *priv)
8814{
8815 iwl_hw_cancel_deferred_work(priv);
8816
8817 cancel_delayed_work(&priv->scan_check);
8818 cancel_delayed_work(&priv->alive_start);
8819 cancel_delayed_work(&priv->post_associate);
8820 cancel_work_sync(&priv->beacon_update);
8821}
8822
8823static struct attribute *iwl_sysfs_entries[] = {
8824 &dev_attr_antenna.attr,
8825 &dev_attr_channels.attr,
8826 &dev_attr_dump_errors.attr,
8827 &dev_attr_dump_events.attr,
8828 &dev_attr_flags.attr,
8829 &dev_attr_filter_flags.attr,
8830#ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
8831 &dev_attr_measurement.attr,
8832#endif
8833 &dev_attr_power_level.attr,
8834 &dev_attr_retry_rate.attr,
8835 &dev_attr_rf_kill.attr,
8836 &dev_attr_rs_window.attr,
8837 &dev_attr_statistics.attr,
8838 &dev_attr_status.attr,
8839 &dev_attr_temperature.attr,
8840 &dev_attr_tune.attr,
8841 &dev_attr_tx_power.attr,
8842
8843 NULL
8844};
8845
8846static struct attribute_group iwl_attribute_group = {
8847 .name = NULL, /* put in device directory */
8848 .attrs = iwl_sysfs_entries,
8849};
8850
8851static struct ieee80211_ops iwl_hw_ops = {
8852 .tx = iwl_mac_tx,
8853 .open = iwl_mac_open,
8854 .stop = iwl_mac_stop,
8855 .add_interface = iwl_mac_add_interface,
8856 .remove_interface = iwl_mac_remove_interface,
8857 .config = iwl_mac_config,
8858 .config_interface = iwl_mac_config_interface,
8859 .set_key = iwl_mac_set_key,
8860 .get_stats = iwl_mac_get_stats,
8861 .get_tx_stats = iwl_mac_get_tx_stats,
8862 .conf_tx = iwl_mac_conf_tx,
8863 .get_tsf = iwl_mac_get_tsf,
8864 .reset_tsf = iwl_mac_reset_tsf,
8865 .beacon_update = iwl_mac_beacon_update,
8866#ifdef CONFIG_IWLWIFI_HT
8867 .conf_ht = iwl_mac_conf_ht,
8868 .get_ht_capab = iwl_mac_get_ht_capab,
8869#ifdef CONFIG_IWLWIFI_HT_AGG
8870 .ht_tx_agg_start = iwl_mac_ht_tx_agg_start,
8871 .ht_tx_agg_stop = iwl_mac_ht_tx_agg_stop,
8872 .ht_rx_agg_start = iwl_mac_ht_rx_agg_start,
8873 .ht_rx_agg_stop = iwl_mac_ht_rx_agg_stop,
8874#endif /* CONFIG_IWLWIFI_HT_AGG */
8875#endif /* CONFIG_IWLWIFI_HT */
8876 .hw_scan = iwl_mac_hw_scan
8877};
8878
8879static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
8880{
8881 int err = 0;
8882 struct iwl_priv *priv;
8883 struct ieee80211_hw *hw;
8884 int i;
8885
8886 if (iwl_param_disable_hw_scan) {
8887 IWL_DEBUG_INFO("Disabling hw_scan\n");
8888 iwl_hw_ops.hw_scan = NULL;
8889 }
8890
8891 if ((iwl_param_queues_num > IWL_MAX_NUM_QUEUES) ||
8892 (iwl_param_queues_num < IWL_MIN_NUM_QUEUES)) {
8893 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
8894 IWL_MIN_NUM_QUEUES, IWL_MAX_NUM_QUEUES);
8895 err = -EINVAL;
8896 goto out;
8897 }
8898
8899 /* mac80211 allocates memory for this device instance, including
8900 * space for this driver's private structure */
8901 hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwl_hw_ops);
8902 if (hw == NULL) {
8903 IWL_ERROR("Can not allocate network device\n");
8904 err = -ENOMEM;
8905 goto out;
8906 }
8907 SET_IEEE80211_DEV(hw, &pdev->dev);
8908
8909 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
8910 priv = hw->priv;
8911 priv->hw = hw;
8912
8913 priv->pci_dev = pdev;
8914 priv->antenna = (enum iwl_antenna)iwl_param_antenna;
8915#ifdef CONFIG_IWLWIFI_DEBUG
8916 iwl_debug_level = iwl_param_debug;
8917 atomic_set(&priv->restrict_refcnt, 0);
8918#endif
8919 priv->retry_rate = 1;
8920
8921 priv->ibss_beacon = NULL;
8922
8923 /* Tell mac80211 and its clients (e.g. Wireless Extensions)
8924 * the range of signal quality values that we'll provide.
8925 * Negative values for level/noise indicate that we'll provide dBm.
8926 * For WE, at least, non-0 values here *enable* display of values
8927 * in app (iwconfig). */
8928 hw->max_rssi = -20; /* signal level, negative indicates dBm */
8929 hw->max_noise = -20; /* noise level, negative indicates dBm */
8930 hw->max_signal = 100; /* link quality indication (%) */
8931
8932 /* Tell mac80211 our Tx characteristics */
8933 hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE;
8934
8935 hw->queues = 4;
8936#ifdef CONFIG_IWLWIFI_HT
8937#ifdef CONFIG_IWLWIFI_HT_AGG
8938 hw->queues = 16;
8939#endif /* CONFIG_IWLWIFI_HT_AGG */
8940#endif /* CONFIG_IWLWIFI_HT */
8941
8942 spin_lock_init(&priv->lock);
8943 spin_lock_init(&priv->power_data.lock);
8944 spin_lock_init(&priv->sta_lock);
8945 spin_lock_init(&priv->hcmd_lock);
8946 spin_lock_init(&priv->lq_mngr.lock);
8947
8948 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++)
8949 INIT_LIST_HEAD(&priv->ibss_mac_hash[i]);
8950
8951 INIT_LIST_HEAD(&priv->free_frames);
8952
8953 mutex_init(&priv->mutex);
8954 if (pci_enable_device(pdev)) {
8955 err = -ENODEV;
8956 goto out_ieee80211_free_hw;
8957 }
8958
8959 pci_set_master(pdev);
8960
8961 iwl_clear_stations_table(priv);
8962
8963 priv->data_retry_limit = -1;
8964 priv->ieee_channels = NULL;
8965 priv->ieee_rates = NULL;
8966 priv->phymode = -1;
8967
8968 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
8969 if (!err)
8970 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
8971 if (err) {
8972 printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n");
8973 goto out_pci_disable_device;
8974 }
8975
8976 pci_set_drvdata(pdev, priv);
8977 err = pci_request_regions(pdev, DRV_NAME);
8978 if (err)
8979 goto out_pci_disable_device;
8980 /* We disable the RETRY_TIMEOUT register (0x41) to keep
8981 * PCI Tx retries from interfering with C3 CPU state */
8982 pci_write_config_byte(pdev, 0x41, 0x00);
8983 priv->hw_base = pci_iomap(pdev, 0, 0);
8984 if (!priv->hw_base) {
8985 err = -ENODEV;
8986 goto out_pci_release_regions;
8987 }
8988
8989 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
8990 (unsigned long long) pci_resource_len(pdev, 0));
8991 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
8992
8993 /* Initialize module parameter values here */
8994
8995 if (iwl_param_disable) {
8996 set_bit(STATUS_RF_KILL_SW, &priv->status);
8997 IWL_DEBUG_INFO("Radio disabled.\n");
8998 }
8999
9000 priv->iw_mode = IEEE80211_IF_TYPE_STA;
9001
9002 priv->ps_mode = 0;
9003 priv->use_ant_b_for_management_frame = 1; /* start with ant B */
9004 priv->is_ht_enabled = 1;
9005 priv->channel_width = IWL_CHANNEL_WIDTH_40MHZ;
9006 priv->valid_antenna = 0x7; /* assume all 3 connected */
9007 priv->ps_mode = IWL_MIMO_PS_NONE;
9008 priv->cck_power_index_compensation = iwl_read32(
9009 priv, CSR_HW_REV_WA_REG);
9010
9011 iwl4965_set_rxon_chain(priv);
9012
9013 printk(KERN_INFO DRV_NAME
9014 ": Detected Intel Wireless WiFi Link 4965AGN\n");
9015
9016 /* Device-specific setup */
9017 if (iwl_hw_set_hw_setting(priv)) {
9018 IWL_ERROR("failed to set hw settings\n");
9019 mutex_unlock(&priv->mutex);
9020 goto out_iounmap;
9021 }
9022
9023#ifdef CONFIG_IWLWIFI_QOS
9024 if (iwl_param_qos_enable)
9025 priv->qos_data.qos_enable = 1;
9026
9027 iwl_reset_qos(priv);
9028
9029 priv->qos_data.qos_active = 0;
9030 priv->qos_data.qos_cap.val = 0;
9031#endif /* CONFIG_IWLWIFI_QOS */
9032
9033 iwl_set_rxon_channel(priv, MODE_IEEE80211G, 6);
9034 iwl_setup_deferred_work(priv);
9035 iwl_setup_rx_handlers(priv);
9036
9037 priv->rates_mask = IWL_RATES_MASK;
9038 /* If power management is turned on, default to AC mode */
9039 priv->power_mode = IWL_POWER_AC;
9040 priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
9041
9042 pci_enable_msi(pdev);
9043
9044 err = request_irq(pdev->irq, iwl_isr, IRQF_SHARED, DRV_NAME, priv);
9045 if (err) {
9046 IWL_ERROR("Error allocating IRQ %d\n", pdev->irq);
9047 goto out_disable_msi;
9048 }
9049
9050 mutex_lock(&priv->mutex);
9051
9052 err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
9053 if (err) {
9054 IWL_ERROR("failed to create sysfs device attributes\n");
9055 mutex_unlock(&priv->mutex);
9056 goto out_release_irq;
9057 }
9058
9059 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
9060 * ucode filename and max sizes are card-specific. */
9061 err = iwl_read_ucode(priv);
9062 if (err) {
9063 IWL_ERROR("Could not read microcode: %d\n", err);
9064 mutex_unlock(&priv->mutex);
9065 goto out_pci_alloc;
9066 }
9067
9068 mutex_unlock(&priv->mutex);
9069
9070 IWL_DEBUG_INFO("Queing UP work.\n");
9071
9072 queue_work(priv->workqueue, &priv->up);
9073
9074 return 0;
9075
9076 out_pci_alloc:
9077 iwl_dealloc_ucode_pci(priv);
9078
9079 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
9080
9081 out_release_irq:
9082 free_irq(pdev->irq, priv);
9083
9084 out_disable_msi:
9085 pci_disable_msi(pdev);
9086 destroy_workqueue(priv->workqueue);
9087 priv->workqueue = NULL;
9088 iwl_unset_hw_setting(priv);
9089
9090 out_iounmap:
9091 pci_iounmap(pdev, priv->hw_base);
9092 out_pci_release_regions:
9093 pci_release_regions(pdev);
9094 out_pci_disable_device:
9095 pci_disable_device(pdev);
9096 pci_set_drvdata(pdev, NULL);
9097 out_ieee80211_free_hw:
9098 ieee80211_free_hw(priv->hw);
9099 out:
9100 return err;
9101}
9102
9103static void iwl_pci_remove(struct pci_dev *pdev)
9104{
9105 struct iwl_priv *priv = pci_get_drvdata(pdev);
9106 struct list_head *p, *q;
9107 int i;
9108
9109 if (!priv)
9110 return;
9111
9112 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
9113
9114 mutex_lock(&priv->mutex);
9115 set_bit(STATUS_EXIT_PENDING, &priv->status);
9116 __iwl_down(priv);
9117 mutex_unlock(&priv->mutex);
9118
9119 /* Free MAC hash list for ADHOC */
9120 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
9121 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
9122 list_del(p);
9123 kfree(list_entry(p, struct iwl_ibss_seq, list));
9124 }
9125 }
9126
9127 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
9128
9129 iwl_dealloc_ucode_pci(priv);
9130
9131 if (priv->rxq.bd)
9132 iwl_rx_queue_free(priv, &priv->rxq);
9133 iwl_hw_txq_ctx_free(priv);
9134
9135 iwl_unset_hw_setting(priv);
9136 iwl_clear_stations_table(priv);
9137
9138 if (priv->mac80211_registered) {
9139 ieee80211_unregister_hw(priv->hw);
9140 iwl_rate_control_unregister(priv->hw);
9141 }
9142
9143 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
9144 * priv->workqueue... so we can't take down the workqueue
9145 * until now... */
9146 destroy_workqueue(priv->workqueue);
9147 priv->workqueue = NULL;
9148
9149 free_irq(pdev->irq, priv);
9150 pci_disable_msi(pdev);
9151 pci_iounmap(pdev, priv->hw_base);
9152 pci_release_regions(pdev);
9153 pci_disable_device(pdev);
9154 pci_set_drvdata(pdev, NULL);
9155
9156 kfree(priv->channel_info);
9157
9158 kfree(priv->ieee_channels);
9159 kfree(priv->ieee_rates);
9160
9161 if (priv->ibss_beacon)
9162 dev_kfree_skb(priv->ibss_beacon);
9163
9164 ieee80211_free_hw(priv->hw);
9165}
9166
9167#ifdef CONFIG_PM
9168
9169static int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
9170{
9171 struct iwl_priv *priv = pci_get_drvdata(pdev);
9172
9173 mutex_lock(&priv->mutex);
9174
9175 set_bit(STATUS_IN_SUSPEND, &priv->status);
9176
9177 /* Take down the device; powers it off, etc. */
9178 __iwl_down(priv);
9179
9180 if (priv->mac80211_registered)
9181 ieee80211_stop_queues(priv->hw);
9182
9183 pci_save_state(pdev);
9184 pci_disable_device(pdev);
9185 pci_set_power_state(pdev, PCI_D3hot);
9186
9187 mutex_unlock(&priv->mutex);
9188
9189 return 0;
9190}
9191
9192static void iwl_resume(struct iwl_priv *priv)
9193{
9194 unsigned long flags;
9195
9196 /* The following it a temporary work around due to the
9197 * suspend / resume not fully initializing the NIC correctly.
9198 * Without all of the following, resume will not attempt to take
9199 * down the NIC (it shouldn't really need to) and will just try
9200 * and bring the NIC back up. However that fails during the
9201 * ucode verification process. This then causes iwl_down to be
9202 * called *after* iwl_hw_nic_init() has succeeded -- which
9203 * then lets the next init sequence succeed. So, we've
9204 * replicated all of that NIC init code here... */
9205
9206 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
9207
9208 iwl_hw_nic_init(priv);
9209
9210 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
9211 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
9212 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
9213 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
9214 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
9215 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
9216
9217 /* tell the device to stop sending interrupts */
9218 iwl_disable_interrupts(priv);
9219
9220 spin_lock_irqsave(&priv->lock, flags);
9221 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
9222
9223 if (!iwl_grab_restricted_access(priv)) {
9224 iwl_write_restricted_reg(priv, APMG_CLK_DIS_REG,
9225 APMG_CLK_VAL_DMA_CLK_RQT);
9226 iwl_release_restricted_access(priv);
9227 }
9228 spin_unlock_irqrestore(&priv->lock, flags);
9229
9230 udelay(5);
9231
9232 iwl_hw_nic_reset(priv);
9233
9234 /* Bring the device back up */
9235 clear_bit(STATUS_IN_SUSPEND, &priv->status);
9236 queue_work(priv->workqueue, &priv->up);
9237}
9238
9239static int iwl_pci_resume(struct pci_dev *pdev)
9240{
9241 struct iwl_priv *priv = pci_get_drvdata(pdev);
9242 int err;
9243
9244 printk(KERN_INFO "Coming out of suspend...\n");
9245
9246 mutex_lock(&priv->mutex);
9247
9248 pci_set_power_state(pdev, PCI_D0);
9249 err = pci_enable_device(pdev);
9250 pci_restore_state(pdev);
9251
9252 /*
9253 * Suspend/Resume resets the PCI configuration space, so we have to
9254 * re-disable the RETRY_TIMEOUT register (0x41) to keep PCI Tx retries
9255 * from interfering with C3 CPU state. pci_restore_state won't help
9256 * here since it only restores the first 64 bytes pci config header.
9257 */
9258 pci_write_config_byte(pdev, 0x41, 0x00);
9259
9260 iwl_resume(priv);
9261 mutex_unlock(&priv->mutex);
9262
9263 return 0;
9264}
9265
9266#endif /* CONFIG_PM */
9267
9268/*****************************************************************************
9269 *
9270 * driver and module entry point
9271 *
9272 *****************************************************************************/
9273
9274static struct pci_driver iwl_driver = {
9275 .name = DRV_NAME,
9276 .id_table = iwl_hw_card_ids,
9277 .probe = iwl_pci_probe,
9278 .remove = __devexit_p(iwl_pci_remove),
9279#ifdef CONFIG_PM
9280 .suspend = iwl_pci_suspend,
9281 .resume = iwl_pci_resume,
9282#endif
9283};
9284
9285static int __init iwl_init(void)
9286{
9287
9288 int ret;
9289 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
9290 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
9291 ret = pci_register_driver(&iwl_driver);
9292 if (ret) {
9293 IWL_ERROR("Unable to initialize PCI module\n");
9294 return ret;
9295 }
9296#ifdef CONFIG_IWLWIFI_DEBUG
9297 ret = driver_create_file(&iwl_driver.driver, &driver_attr_debug_level);
9298 if (ret) {
9299 IWL_ERROR("Unable to create driver sysfs file\n");
9300 pci_unregister_driver(&iwl_driver);
9301 return ret;
9302 }
9303#endif
9304
9305 return ret;
9306}
9307
9308static void __exit iwl_exit(void)
9309{
9310#ifdef CONFIG_IWLWIFI_DEBUG
9311 driver_remove_file(&iwl_driver.driver, &driver_attr_debug_level);
9312#endif
9313 pci_unregister_driver(&iwl_driver);
9314}
9315
9316module_param_named(antenna, iwl_param_antenna, int, 0444);
9317MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
9318module_param_named(disable, iwl_param_disable, int, 0444);
9319MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
9320module_param_named(hwcrypto, iwl_param_hwcrypto, int, 0444);
9321MODULE_PARM_DESC(hwcrypto,
9322 "using hardware crypto engine (default 0 [software])\n");
9323module_param_named(debug, iwl_param_debug, int, 0444);
9324MODULE_PARM_DESC(debug, "debug output mask");
9325module_param_named(disable_hw_scan, iwl_param_disable_hw_scan, int, 0444);
9326MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
9327
9328module_param_named(queues_num, iwl_param_queues_num, int, 0444);
9329MODULE_PARM_DESC(queues_num, "number of hw queues.");
9330
9331/* QoS */
9332module_param_named(qos_enable, iwl_param_qos_enable, int, 0444);
9333MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
9334
9335module_exit(iwl_exit);
9336module_init(iwl_init);
Linux kernel - Deliverables
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