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- Committer: Bazaar Package Importer
- Author(s): , Ben Collins
- Date: 2008-04-02 06:59:04 UTC
- Revision ID: james.westby@ubuntu.com-20080402065904-e5knh2gn2hms3xbb
Tags: 2.6.24-14.11
[Ben Collins]
* iwlwifi: Update to iwlwifi-1.2.25 and mac80211-10.0.4
- LP: #200950
* ubuntu: Slight cleanups to module hiearchy and Makefiles
* mac80211: Enable LED triggers
* iwlwifi: Add LED trigger support (rx and tx only)
- LP: #176090
* iwlwifi: Update to iwlwifi-1.2.25 and mac80211-10.0.4
- LP: #200950
* ubuntu: Slight cleanups to module hiearchy and Makefiles
* mac80211: Enable LED triggers
* iwlwifi: Add LED trigger support (rx and tx only)
- LP: #176090
- files added:
- debian/control.d/vars.openvz
- updates/wireless
- updates/wireless/iwlwifi
- updates/wireless/iwlwifi/firmware
- updates/wireless/iwlwifi/firmware/iwlwifi-4965-ucode-4.44.1.20
- updates/wireless/iwlwifi/iwlwifi
- updates/wireless/iwlwifi/iwlwifi/compatible
- updates/wireless/iwlwifi/iwlwifi/origin
- updates/wireless/iwlwifi/iwlwifi/patches
- updates/wireless/iwlwifi/iwlwifi/scripts
- updates/wireless/iwlwifi/mac80211
- updates/wireless/iwlwifi/mac80211/compatible
- updates/wireless/iwlwifi/mac80211/compatible/include
- updates/wireless/iwlwifi/mac80211/compatible/include/linux
- updates/wireless/iwlwifi/mac80211/compatible/include/net
- updates/wireless/iwlwifi/mac80211/compatible/net
- updates/wireless/iwlwifi/mac80211/compatible/net/mac80211
- updates/wireless/iwlwifi/mac80211/compatible/net/wireless
- updates/wireless/iwlwifi/mac80211/modified
- updates/wireless/iwlwifi/mac80211/modified/include
- updates/wireless/iwlwifi/mac80211/modified/include/linux
- updates/wireless/iwlwifi/mac80211/modified/include/net
- updates/wireless/iwlwifi/mac80211/modified/net
- updates/wireless/iwlwifi/mac80211/modified/net/mac80211
- updates/wireless/iwlwifi/mac80211/modified/net/wireless
- updates/wireless/iwlwifi/mac80211/origin
- updates/wireless/iwlwifi/mac80211/origin/include
- updates/wireless/iwlwifi/mac80211/origin/include/linux
- updates/wireless/iwlwifi/mac80211/origin/include/net
- updates/wireless/iwlwifi/mac80211/origin/net
- updates/wireless/iwlwifi/mac80211/origin/net/mac80211
- updates/wireless/iwlwifi/mac80211/origin/net/wireless
- updates/wireless/iwlwifi/mac80211/patches
- updates/wireless/iwlwifi/mac80211/pending
- updates/wireless/iwlwifi/mac80211/scripts
- updates/wireless/iwlwifi/mac80211/stubs
- files modified:
- debian/changelog
added
removed
updates/wireless/iwlwifi/iwlwifi/origin/iwl4965-base.c
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
#include <linux/kernel.h>
31
#include <linux/module.h>
32
#include <linux/version.h>
33
#include <linux/init.h>
34
#include <linux/pci.h>
35
#include <linux/dma-mapping.h>
36
#include <linux/delay.h>
37
#include <linux/skbuff.h>
38
#include <linux/netdevice.h>
39
#include <linux/wireless.h>
40
#include <linux/firmware.h>
41
#include <linux/skbuff.h>
42
#include <linux/netdevice.h>
43
#include <linux/etherdevice.h>
44
#include <linux/if_arp.h>
45
46
#include <net/ieee80211_radiotap.h>
47
#include <net/mac80211.h>
48
49
#include <asm/div64.h>
50
51
#include "iwl-4965.h"
52
#include "iwl-helpers.h"
53
54
#ifdef CONFIG_IWL4965_DEBUG
55
u32 iwl4965_debug_level;
56
#endif
57
58
static int iwl4965_tx_queue_update_write_ptr(struct iwl4965_priv *priv,
59
struct iwl4965_tx_queue *txq);
60
61
/******************************************************************************
62
*
63
* module boiler plate
64
*
65
******************************************************************************/
66
67
/* module parameters */
68
static int iwl4965_param_disable_hw_scan; /* def: 0 = use 4965's h/w scan */
69
static int iwl4965_param_debug; /* def: 0 = minimal debug log messages */
70
static int iwl4965_param_disable; /* def: enable radio */
71
static int iwl4965_param_antenna; /* def: 0 = both antennas (use diversity) */
72
int iwl4965_param_hwcrypto; /* def: using software encryption */
73
static int iwl4965_param_qos_enable = 1; /* def: 1 = use quality of service */
74
int iwl4965_param_queues_num = IWL_MAX_NUM_QUEUES; /* def: 16 Tx queues */
75
76
/*
77
* module name, copyright, version, etc.
78
* NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
79
*/
80
81
#define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
82
83
#ifdef CONFIG_IWL4965_DEBUG
84
#define VD "d"
85
#else
86
#define VD
87
#endif
88
89
#ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
90
#define VS "s"
91
#else
92
#define VS
93
#endif
94
95
#define IWLWIFI_VERSION "1.2.25" VD VS
96
#define DRV_COPYRIGHT "Copyright(c) 2003-2007 Intel Corporation"
97
#define DRV_VERSION IWLWIFI_VERSION
98
99
/* Change firmware file name, using "-" and incrementing number,
100
* *only* when uCode interface or architecture changes so that it
101
* is not compatible with earlier drivers.
102
* This number will also appear in << 8 position of 1st dword of uCode file */
103
#define IWL4965_UCODE_API "-1"
104
105
MODULE_DESCRIPTION(DRV_DESCRIPTION);
106
MODULE_VERSION(DRV_VERSION);
107
MODULE_AUTHOR(DRV_COPYRIGHT);
108
MODULE_LICENSE("GPL");
109
110
__le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
111
{
112
u16 fc = le16_to_cpu(hdr->frame_control);
113
int hdr_len = iwlwifi_ieee80211_get_hdrlen(fc);
114
115
if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
116
return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
117
return NULL;
118
}
119
120
static const struct ieee80211_hw_mode *iwl4965_get_hw_mode(
121
struct iwl4965_priv *priv, int mode)
122
{
123
int i;
124
125
for (i = 0; i < 3; i++)
126
if (priv->modes[i].mode == mode)
127
return &priv->modes[i];
128
129
return NULL;
130
}
131
132
static int iwl4965_is_empty_essid(const char *essid, int essid_len)
133
{
134
/* Single white space is for Linksys APs */
135
if (essid_len == 1 && essid[0] == ' ')
136
return 1;
137
138
/* Otherwise, if the entire essid is 0, we assume it is hidden */
139
while (essid_len) {
140
essid_len--;
141
if (essid[essid_len] != '\0')
142
return 0;
143
}
144
145
return 1;
146
}
147
148
static const char *iwl4965_escape_essid(const char *essid, u8 essid_len)
149
{
150
static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
151
const char *s = essid;
152
char *d = escaped;
153
154
if (iwl4965_is_empty_essid(essid, essid_len)) {
155
memcpy(escaped, "<hidden>", sizeof("<hidden>"));
156
return escaped;
157
}
158
159
essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
160
while (essid_len--) {
161
if (*s == '\0') {
162
*d++ = '\\';
163
*d++ = '0';
164
s++;
165
} else
166
*d++ = *s++;
167
}
168
*d = '\0';
169
return escaped;
170
}
171
172
static void iwl4965_print_hex_dump(int level, void *p, u32 len)
173
{
174
#ifdef CONFIG_IWL4965_DEBUG
175
if (!(iwl4965_debug_level & level))
176
return;
177
178
print_hex_dump(KERN_DEBUG, "iwl data: ", DUMP_PREFIX_OFFSET, 16, 1,
179
p, len, 1);
180
#endif
181
}
182
183
/*************** DMA-QUEUE-GENERAL-FUNCTIONS *****
184
* DMA services
185
*
186
* Theory of operation
187
*
188
* A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
189
* of buffer descriptors, each of which points to one or more data buffers for
190
* the device to read from or fill. Driver and device exchange status of each
191
* queue via "read" and "write" pointers. Driver keeps minimum of 2 empty
192
* entries in each circular buffer, to protect against confusing empty and full
193
* queue states.
194
*
195
* The device reads or writes the data in the queues via the device's several
196
* DMA/FIFO channels. Each queue is mapped to a single DMA channel.
197
*
198
* For Tx queue, there are low mark and high mark limits. If, after queuing
199
* the packet for Tx, free space become < low mark, Tx queue stopped. When
200
* reclaiming packets (on 'tx done IRQ), if free space become > high mark,
201
* Tx queue resumed.
202
*
203
* The 4965 operates with up to 17 queues: One receive queue, one transmit
204
* queue (#4) for sending commands to the device firmware, and 15 other
205
* Tx queues that may be mapped to prioritized Tx DMA/FIFO channels.
206
*
207
* See more detailed info in iwl-4965-hw.h.
208
***************************************************/
209
210
static int iwl4965_queue_space(const struct iwl4965_queue *q)
211
{
212
int s = q->read_ptr - q->write_ptr;
213
214
if (q->read_ptr > q->write_ptr)
215
s -= q->n_bd;
216
217
if (s <= 0)
218
s += q->n_window;
219
/* keep some reserve to not confuse empty and full situations */
220
s -= 2;
221
if (s < 0)
222
s = 0;
223
return s;
224
}
225
226
/**
227
* iwl4965_queue_inc_wrap - increment queue index, wrap back to beginning
228
* @index -- current index
229
* @n_bd -- total number of entries in queue (must be power of 2)
230
*/
231
static inline int iwl4965_queue_inc_wrap(int index, int n_bd)
232
{
233
return ++index & (n_bd - 1);
234
}
235
236
/**
237
* iwl4965_queue_dec_wrap - decrement queue index, wrap back to end
238
* @index -- current index
239
* @n_bd -- total number of entries in queue (must be power of 2)
240
*/
241
static inline int iwl4965_queue_dec_wrap(int index, int n_bd)
242
{
243
return --index & (n_bd - 1);
244
}
245
246
static inline int x2_queue_used(const struct iwl4965_queue *q, int i)
247
{
248
return q->write_ptr > q->read_ptr ?
249
(i >= q->read_ptr && i < q->write_ptr) :
250
!(i < q->read_ptr && i >= q->write_ptr);
251
}
252
253
static inline u8 get_cmd_index(struct iwl4965_queue *q, u32 index, int is_huge)
254
{
255
/* This is for scan command, the big buffer at end of command array */
256
if (is_huge)
257
return q->n_window; /* must be power of 2 */
258
259
/* Otherwise, use normal size buffers */
260
return index & (q->n_window - 1);
261
}
262
263
/**
264
* iwl4965_queue_init - Initialize queue's high/low-water and read/write indexes
265
*/
266
static int iwl4965_queue_init(struct iwl4965_priv *priv, struct iwl4965_queue *q,
267
int count, int slots_num, u32 id)
268
{
269
q->n_bd = count;
270
q->n_window = slots_num;
271
q->id = id;
272
273
/* count must be power-of-two size, otherwise iwl4965_queue_inc_wrap
274
* and iwl4965_queue_dec_wrap are broken. */
275
BUG_ON(!is_power_of_2(count));
276
277
/* slots_num must be power-of-two size, otherwise
278
* get_cmd_index is broken. */
279
BUG_ON(!is_power_of_2(slots_num));
280
281
q->low_mark = q->n_window / 4;
282
if (q->low_mark < 4)
283
q->low_mark = 4;
284
285
q->high_mark = q->n_window / 8;
286
if (q->high_mark < 2)
287
q->high_mark = 2;
288
289
q->write_ptr = q->read_ptr = 0;
290
291
return 0;
292
}
293
294
/**
295
* iwl4965_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
296
*/
297
static int iwl4965_tx_queue_alloc(struct iwl4965_priv *priv,
298
struct iwl4965_tx_queue *txq, u32 id)
299
{
300
struct pci_dev *dev = priv->pci_dev;
301
302
/* Driver private data, only for Tx (not command) queues,
303
* not shared with device. */
304
if (id != IWL_CMD_QUEUE_NUM) {
305
txq->txb = kmalloc(sizeof(txq->txb[0]) *
306
TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
307
if (!txq->txb) {
308
IWL_ERROR("kmalloc for auxiliary BD "
309
"structures failed\n");
310
goto error;
311
}
312
} else
313
txq->txb = NULL;
314
315
/* Circular buffer of transmit frame descriptors (TFDs),
316
* shared with device */
317
txq->bd = pci_alloc_consistent(dev,
318
sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
319
&txq->q.dma_addr);
320
321
if (!txq->bd) {
322
IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
323
sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
324
goto error;
325
}
326
txq->q.id = id;
327
328
return 0;
329
330
error:
331
if (txq->txb) {
332
kfree(txq->txb);
333
txq->txb = NULL;
334
}
335
336
return -ENOMEM;
337
}
338
339
/**
340
* iwl4965_tx_queue_init - Allocate and initialize one tx/cmd queue
341
*/
342
int iwl4965_tx_queue_init(struct iwl4965_priv *priv,
343
struct iwl4965_tx_queue *txq, int slots_num, u32 txq_id)
344
{
345
struct pci_dev *dev = priv->pci_dev;
346
int len;
347
int rc = 0;
348
349
/*
350
* Alloc buffer array for commands (Tx or other types of commands).
351
* For the command queue (#4), allocate command space + one big
352
* command for scan, since scan command is very huge; the system will
353
* not have two scans at the same time, so only one is needed.
354
* For data Tx queues (all other queues), no super-size command
355
* space is needed.
356
*/
357
len = sizeof(struct iwl4965_cmd) * slots_num;
358
if (txq_id == IWL_CMD_QUEUE_NUM)
359
len += IWL_MAX_SCAN_SIZE;
360
txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
361
if (!txq->cmd)
362
return -ENOMEM;
363
364
/* Alloc driver data array and TFD circular buffer */
365
rc = iwl4965_tx_queue_alloc(priv, txq, txq_id);
366
if (rc) {
367
pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
368
369
return -ENOMEM;
370
}
371
txq->need_update = 0;
372
373
/* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
374
* iwl4965_queue_inc_wrap and iwl4965_queue_dec_wrap are broken. */
375
BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
376
377
/* Initialize queue's high/low-water marks, and head/tail indexes */
378
iwl4965_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
379
380
/* Tell device where to find queue */
381
iwl4965_hw_tx_queue_init(priv, txq);
382
383
return 0;
384
}
385
386
/**
387
* iwl4965_tx_queue_free - Deallocate DMA queue.
388
* @txq: Transmit queue to deallocate.
389
*
390
* Empty queue by removing and destroying all BD's.
391
* Free all buffers.
392
* 0-fill, but do not free "txq" descriptor structure.
393
*/
394
void iwl4965_tx_queue_free(struct iwl4965_priv *priv, struct iwl4965_tx_queue *txq)
395
{
396
struct iwl4965_queue *q = &txq->q;
397
struct pci_dev *dev = priv->pci_dev;
398
int len;
399
400
if (q->n_bd == 0)
401
return;
402
403
/* first, empty all BD's */
404
for (; q->write_ptr != q->read_ptr;
405
q->read_ptr = iwl4965_queue_inc_wrap(q->read_ptr, q->n_bd))
406
iwl4965_hw_txq_free_tfd(priv, txq);
407
408
len = sizeof(struct iwl4965_cmd) * q->n_window;
409
if (q->id == IWL_CMD_QUEUE_NUM)
410
len += IWL_MAX_SCAN_SIZE;
411
412
/* De-alloc array of command/tx buffers */
413
pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
414
415
/* De-alloc circular buffer of TFDs */
416
if (txq->q.n_bd)
417
pci_free_consistent(dev, sizeof(struct iwl4965_tfd_frame) *
418
txq->q.n_bd, txq->bd, txq->q.dma_addr);
419
420
/* De-alloc array of per-TFD driver data */
421
if (txq->txb) {
422
kfree(txq->txb);
423
txq->txb = NULL;
424
}
425
426
/* 0-fill queue descriptor structure */
427
memset(txq, 0, sizeof(*txq));
428
}
429
430
const u8 iwl4965_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
431
432
/*************** STATION TABLE MANAGEMENT ****
433
* mac80211 should be examined to determine if sta_info is duplicating
434
* the functionality provided here
435
*/
436
437
/**************************************************************/
438
439
#if 0 /* temporary disable till we add real remove station */
440
/**
441
* iwl4965_remove_station - Remove driver's knowledge of station.
442
*
443
* NOTE: This does not remove station from device's station table.
444
*/
445
static u8 iwl4965_remove_station(struct iwl4965_priv *priv, const u8 *addr, int is_ap)
446
{
447
int index = IWL_INVALID_STATION;
448
int i;
449
unsigned long flags;
450
451
spin_lock_irqsave(&priv->sta_lock, flags);
452
453
if (is_ap)
454
index = IWL_AP_ID;
455
else if (is_broadcast_ether_addr(addr))
456
index = priv->hw_setting.bcast_sta_id;
457
else
458
for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
459
if (priv->stations[i].used &&
460
!compare_ether_addr(priv->stations[i].sta.sta.addr,
461
addr)) {
462
index = i;
463
break;
464
}
465
466
if (unlikely(index == IWL_INVALID_STATION))
467
goto out;
468
469
if (priv->stations[index].used) {
470
priv->stations[index].used = 0;
471
priv->num_stations--;
472
}
473
474
BUG_ON(priv->num_stations < 0);
475
476
out:
477
spin_unlock_irqrestore(&priv->sta_lock, flags);
478
return 0;
479
}
480
#endif
481
482
/**
483
* iwl4965_clear_stations_table - Clear the driver's station table
484
*
485
* NOTE: This does not clear or otherwise alter the device's station table.
486
*/
487
static void iwl4965_clear_stations_table(struct iwl4965_priv *priv)
488
{
489
unsigned long flags;
490
491
spin_lock_irqsave(&priv->sta_lock, flags);
492
493
priv->num_stations = 0;
494
memset(priv->stations, 0, sizeof(priv->stations));
495
496
spin_unlock_irqrestore(&priv->sta_lock, flags);
497
}
498
499
/**
500
* iwl4965_add_station_flags - Add station to tables in driver and device
501
*/
502
u8 iwl4965_add_station_flags(struct iwl4965_priv *priv, const u8 *addr, int is_ap, u8 flags)
503
{
504
int i;
505
int index = IWL_INVALID_STATION;
506
struct iwl4965_station_entry *station;
507
unsigned long flags_spin;
508
509
spin_lock_irqsave(&priv->sta_lock, flags_spin);
510
if (is_ap)
511
index = IWL_AP_ID;
512
else if (is_broadcast_ether_addr(addr))
513
index = priv->hw_setting.bcast_sta_id;
514
else
515
for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
516
if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
517
addr)) {
518
index = i;
519
break;
520
}
521
522
if (!priv->stations[i].used &&
523
index == IWL_INVALID_STATION)
524
index = i;
525
}
526
527
528
/* These two conditions have the same outcome, but keep them separate
529
since they have different meanings */
530
if (unlikely(index == IWL_INVALID_STATION)) {
531
spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
532
return index;
533
}
534
535
if (priv->stations[index].used &&
536
!compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
537
spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
538
return index;
539
}
540
541
542
IWL_DEBUG_ASSOC("Add STA ID %d: " MAC_FMT "\n", index, MAC_ARG(addr));
543
station = &priv->stations[index];
544
station->used = 1;
545
priv->num_stations++;
546
547
/* Set up the REPLY_ADD_STA command to send to device */
548
memset(&station->sta, 0, sizeof(struct iwl4965_addsta_cmd));
549
memcpy(station->sta.sta.addr, addr, ETH_ALEN);
550
station->sta.mode = 0;
551
station->sta.sta.sta_id = index;
552
station->sta.station_flags = 0;
553
554
#ifdef CONFIG_IWL4965_HT
555
/* BCAST station and IBSS stations do not work in HT mode */
556
if (index != priv->hw_setting.bcast_sta_id &&
557
priv->iw_mode != IEEE80211_IF_TYPE_IBSS)
558
iwl4965_set_ht_add_station(priv, index);
559
#endif /*CONFIG_IWL4965_HT*/
560
561
spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
562
563
/* Add station to device's station table */
564
iwl4965_send_add_station(priv, &station->sta, flags);
565
return index;
566
567
}
568
569
/*************** DRIVER STATUS FUNCTIONS *****/
570
571
static inline int iwl4965_is_ready(struct iwl4965_priv *priv)
572
{
573
/* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
574
* set but EXIT_PENDING is not */
575
return test_bit(STATUS_READY, &priv->status) &&
576
test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
577
!test_bit(STATUS_EXIT_PENDING, &priv->status);
578
}
579
580
static inline int iwl4965_is_alive(struct iwl4965_priv *priv)
581
{
582
return test_bit(STATUS_ALIVE, &priv->status);
583
}
584
585
static inline int iwl4965_is_init(struct iwl4965_priv *priv)
586
{
587
return test_bit(STATUS_INIT, &priv->status);
588
}
589
590
static inline int iwl4965_is_rfkill(struct iwl4965_priv *priv)
591
{
592
return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
593
test_bit(STATUS_RF_KILL_SW, &priv->status);
594
}
595
596
static inline int iwl4965_is_ready_rf(struct iwl4965_priv *priv)
597
{
598
599
if (iwl4965_is_rfkill(priv))
600
return 0;
601
602
return iwl4965_is_ready(priv);
603
}
604
605
/*************** HOST COMMAND QUEUE FUNCTIONS *****/
606
607
#define IWL_CMD(x) case x : return #x
608
609
static const char *get_cmd_string(u8 cmd)
610
{
611
switch (cmd) {
612
IWL_CMD(REPLY_ALIVE);
613
IWL_CMD(REPLY_ERROR);
614
IWL_CMD(REPLY_RXON);
615
IWL_CMD(REPLY_RXON_ASSOC);
616
IWL_CMD(REPLY_QOS_PARAM);
617
IWL_CMD(REPLY_RXON_TIMING);
618
IWL_CMD(REPLY_ADD_STA);
619
IWL_CMD(REPLY_REMOVE_STA);
620
IWL_CMD(REPLY_REMOVE_ALL_STA);
621
IWL_CMD(REPLY_TX);
622
IWL_CMD(REPLY_RATE_SCALE);
623
IWL_CMD(REPLY_LEDS_CMD);
624
IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
625
IWL_CMD(RADAR_NOTIFICATION);
626
IWL_CMD(REPLY_QUIET_CMD);
627
IWL_CMD(REPLY_CHANNEL_SWITCH);
628
IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
629
IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
630
IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
631
IWL_CMD(POWER_TABLE_CMD);
632
IWL_CMD(PM_SLEEP_NOTIFICATION);
633
IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
634
IWL_CMD(REPLY_SCAN_CMD);
635
IWL_CMD(REPLY_SCAN_ABORT_CMD);
636
IWL_CMD(SCAN_START_NOTIFICATION);
637
IWL_CMD(SCAN_RESULTS_NOTIFICATION);
638
IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
639
IWL_CMD(BEACON_NOTIFICATION);
640
IWL_CMD(REPLY_TX_BEACON);
641
IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
642
IWL_CMD(QUIET_NOTIFICATION);
643
IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
644
IWL_CMD(MEASURE_ABORT_NOTIFICATION);
645
IWL_CMD(REPLY_BT_CONFIG);
646
IWL_CMD(REPLY_STATISTICS_CMD);
647
IWL_CMD(STATISTICS_NOTIFICATION);
648
IWL_CMD(REPLY_CARD_STATE_CMD);
649
IWL_CMD(CARD_STATE_NOTIFICATION);
650
IWL_CMD(MISSED_BEACONS_NOTIFICATION);
651
IWL_CMD(REPLY_CT_KILL_CONFIG_CMD);
652
IWL_CMD(SENSITIVITY_CMD);
653
IWL_CMD(REPLY_PHY_CALIBRATION_CMD);
654
IWL_CMD(REPLY_RX_PHY_CMD);
655
IWL_CMD(REPLY_RX_MPDU_CMD);
656
IWL_CMD(REPLY_4965_RX);
657
IWL_CMD(REPLY_COMPRESSED_BA);
658
default:
659
return "UNKNOWN";
660
661
}
662
}
663
664
#define HOST_COMPLETE_TIMEOUT (HZ / 2)
665
666
/**
667
* iwl4965_enqueue_hcmd - enqueue a uCode command
668
* @priv: device private data point
669
* @cmd: a point to the ucode command structure
670
*
671
* The function returns < 0 values to indicate the operation is
672
* failed. On success, it turns the index (> 0) of command in the
673
* command queue.
674
*/
675
static int iwl4965_enqueue_hcmd(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
676
{
677
struct iwl4965_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
678
struct iwl4965_queue *q = &txq->q;
679
struct iwl4965_tfd_frame *tfd;
680
u32 *control_flags;
681
struct iwl4965_cmd *out_cmd;
682
u32 idx;
683
u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
684
dma_addr_t phys_addr;
685
int ret;
686
unsigned long flags;
687
688
/* If any of the command structures end up being larger than
689
* the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
690
* we will need to increase the size of the TFD entries */
691
BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
692
!(cmd->meta.flags & CMD_SIZE_HUGE));
693
694
if (iwl4965_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
695
IWL_ERROR("No space for Tx\n");
696
return -ENOSPC;
697
}
698
699
spin_lock_irqsave(&priv->hcmd_lock, flags);
700
701
tfd = &txq->bd[q->write_ptr];
702
memset(tfd, 0, sizeof(*tfd));
703
704
control_flags = (u32 *) tfd;
705
706
idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
707
out_cmd = &txq->cmd[idx];
708
709
out_cmd->hdr.cmd = cmd->id;
710
memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
711
memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
712
713
/* At this point, the out_cmd now has all of the incoming cmd
714
* information */
715
716
out_cmd->hdr.flags = 0;
717
out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
718
INDEX_TO_SEQ(q->write_ptr));
719
if (out_cmd->meta.flags & CMD_SIZE_HUGE)
720
out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
721
722
phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
723
offsetof(struct iwl4965_cmd, hdr);
724
iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
725
726
IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
727
"%d bytes at %d[%d]:%d\n",
728
get_cmd_string(out_cmd->hdr.cmd),
729
out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
730
fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
731
732
txq->need_update = 1;
733
734
/* Set up entry in queue's byte count circular buffer */
735
ret = iwl4965_tx_queue_update_wr_ptr(priv, txq, 0);
736
737
/* Increment and update queue's write index */
738
q->write_ptr = iwl4965_queue_inc_wrap(q->write_ptr, q->n_bd);
739
iwl4965_tx_queue_update_write_ptr(priv, txq);
740
741
spin_unlock_irqrestore(&priv->hcmd_lock, flags);
742
return ret ? ret : idx;
743
}
744
745
static int iwl4965_send_cmd_async(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
746
{
747
int ret;
748
749
BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
750
751
/* An asynchronous command can not expect an SKB to be set. */
752
BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
753
754
/* An asynchronous command MUST have a callback. */
755
BUG_ON(!cmd->meta.u.callback);
756
757
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
758
return -EBUSY;
759
760
ret = iwl4965_enqueue_hcmd(priv, cmd);
761
if (ret < 0) {
762
IWL_ERROR("Error sending %s: iwl4965_enqueue_hcmd failed: %d\n",
763
get_cmd_string(cmd->id), ret);
764
return ret;
765
}
766
return 0;
767
}
768
769
static int iwl4965_send_cmd_sync(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
770
{
771
int cmd_idx;
772
int ret;
773
static atomic_t entry = ATOMIC_INIT(0); /* reentrance protection */
774
775
BUG_ON(cmd->meta.flags & CMD_ASYNC);
776
777
/* A synchronous command can not have a callback set. */
778
BUG_ON(cmd->meta.u.callback != NULL);
779
780
if (atomic_xchg(&entry, 1)) {
781
IWL_ERROR("Error sending %s: Already sending a host command\n",
782
get_cmd_string(cmd->id));
783
return -EBUSY;
784
}
785
786
set_bit(STATUS_HCMD_ACTIVE, &priv->status);
787
788
if (cmd->meta.flags & CMD_WANT_SKB)
789
cmd->meta.source = &cmd->meta;
790
791
cmd_idx = iwl4965_enqueue_hcmd(priv, cmd);
792
if (cmd_idx < 0) {
793
ret = cmd_idx;
794
IWL_ERROR("Error sending %s: iwl4965_enqueue_hcmd failed: %d\n",
795
get_cmd_string(cmd->id), ret);
796
goto out;
797
}
798
799
ret = wait_event_interruptible_timeout(priv->wait_command_queue,
800
!test_bit(STATUS_HCMD_ACTIVE, &priv->status),
801
HOST_COMPLETE_TIMEOUT);
802
if (!ret) {
803
if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
804
IWL_ERROR("Error sending %s: time out after %dms.\n",
805
get_cmd_string(cmd->id),
806
jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
807
808
clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
809
ret = -ETIMEDOUT;
810
goto cancel;
811
}
812
}
813
814
if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
815
IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
816
get_cmd_string(cmd->id));
817
ret = -ECANCELED;
818
goto fail;
819
}
820
if (test_bit(STATUS_FW_ERROR, &priv->status)) {
821
IWL_DEBUG_INFO("Command %s failed: FW Error\n",
822
get_cmd_string(cmd->id));
823
ret = -EIO;
824
goto fail;
825
}
826
if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
827
IWL_ERROR("Error: Response NULL in '%s'\n",
828
get_cmd_string(cmd->id));
829
ret = -EIO;
830
goto out;
831
}
832
833
ret = 0;
834
goto out;
835
836
cancel:
837
if (cmd->meta.flags & CMD_WANT_SKB) {
838
struct iwl4965_cmd *qcmd;
839
840
/* Cancel the CMD_WANT_SKB flag for the cmd in the
841
* TX cmd queue. Otherwise in case the cmd comes
842
* in later, it will possibly set an invalid
843
* address (cmd->meta.source). */
844
qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
845
qcmd->meta.flags &= ~CMD_WANT_SKB;
846
}
847
fail:
848
if (cmd->meta.u.skb) {
849
dev_kfree_skb_any(cmd->meta.u.skb);
850
cmd->meta.u.skb = NULL;
851
}
852
out:
853
atomic_set(&entry, 0);
854
return ret;
855
}
856
857
int iwl4965_send_cmd(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
858
{
859
if (cmd->meta.flags & CMD_ASYNC)
860
return iwl4965_send_cmd_async(priv, cmd);
861
862
return iwl4965_send_cmd_sync(priv, cmd);
863
}
864
865
int iwl4965_send_cmd_pdu(struct iwl4965_priv *priv, u8 id, u16 len, const void *data)
866
{
867
struct iwl4965_host_cmd cmd = {
868
.id = id,
869
.len = len,
870
.data = data,
871
};
872
873
return iwl4965_send_cmd_sync(priv, &cmd);
874
}
875
876
static int __must_check iwl4965_send_cmd_u32(struct iwl4965_priv *priv, u8 id, u32 val)
877
{
878
struct iwl4965_host_cmd cmd = {
879
.id = id,
880
.len = sizeof(val),
881
.data = &val,
882
};
883
884
return iwl4965_send_cmd_sync(priv, &cmd);
885
}
886
887
int iwl4965_send_statistics_request(struct iwl4965_priv *priv)
888
{
889
return iwl4965_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
890
}
891
892
/**
893
* iwl4965_rxon_add_station - add station into station table.
894
*
895
* there is only one AP station with id= IWL_AP_ID
896
* NOTE: mutex must be held before calling this fnction
897
*/
898
static int iwl4965_rxon_add_station(struct iwl4965_priv *priv,
899
const u8 *addr, int is_ap)
900
{
901
u8 sta_id;
902
903
/* Add station to device's station table */
904
sta_id = iwl4965_add_station_flags(priv, addr, is_ap, 0);
905
906
/* Set up default rate scaling table in device's station table */
907
iwl4965_add_station(priv, addr, is_ap);
908
909
return sta_id;
910
}
911
912
/**
913
* iwl4965_set_rxon_channel - Set the phymode and channel values in staging RXON
914
* @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
915
* @channel: Any channel valid for the requested phymode
916
917
* In addition to setting the staging RXON, priv->phymode is also set.
918
*
919
* NOTE: Does not commit to the hardware; it sets appropriate bit fields
920
* in the staging RXON flag structure based on the phymode
921
*/
922
static int iwl4965_set_rxon_channel(struct iwl4965_priv *priv, u8 phymode,
923
u16 channel)
924
{
925
if (!iwl4965_get_channel_info(priv, phymode, channel)) {
926
IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
927
channel, phymode);
928
return -EINVAL;
929
}
930
931
if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
932
(priv->phymode == phymode))
933
return 0;
934
935
priv->staging_rxon.channel = cpu_to_le16(channel);
936
if (phymode == MODE_IEEE80211A)
937
priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
938
else
939
priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
940
941
priv->phymode = phymode;
942
943
IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, phymode);
944
945
return 0;
946
}
947
948
/**
949
* iwl4965_check_rxon_cmd - validate RXON structure is valid
950
*
951
* NOTE: This is really only useful during development and can eventually
952
* be #ifdef'd out once the driver is stable and folks aren't actively
953
* making changes
954
*/
955
static int iwl4965_check_rxon_cmd(struct iwl4965_rxon_cmd *rxon)
956
{
957
int error = 0;
958
int counter = 1;
959
960
if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
961
error |= le32_to_cpu(rxon->flags &
962
(RXON_FLG_TGJ_NARROW_BAND_MSK |
963
RXON_FLG_RADAR_DETECT_MSK));
964
if (error)
965
IWL_WARNING("check 24G fields %d | %d\n",
966
counter++, error);
967
} else {
968
error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
969
0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
970
if (error)
971
IWL_WARNING("check 52 fields %d | %d\n",
972
counter++, error);
973
error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
974
if (error)
975
IWL_WARNING("check 52 CCK %d | %d\n",
976
counter++, error);
977
}
978
error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
979
if (error)
980
IWL_WARNING("check mac addr %d | %d\n", counter++, error);
981
982
/* make sure basic rates 6Mbps and 1Mbps are supported */
983
error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
984
((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
985
if (error)
986
IWL_WARNING("check basic rate %d | %d\n", counter++, error);
987
988
error |= (le16_to_cpu(rxon->assoc_id) > 2007);
989
if (error)
990
IWL_WARNING("check assoc id %d | %d\n", counter++, error);
991
992
error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
993
== (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
994
if (error)
995
IWL_WARNING("check CCK and short slot %d | %d\n",
996
counter++, error);
997
998
error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
999
== (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
1000
if (error)
1001
IWL_WARNING("check CCK & auto detect %d | %d\n",
1002
counter++, error);
1003
1004
error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
1005
RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
1006
if (error)
1007
IWL_WARNING("check TGG and auto detect %d | %d\n",
1008
counter++, error);
1009
1010
if (error)
1011
IWL_WARNING("Tuning to channel %d\n",
1012
le16_to_cpu(rxon->channel));
1013
1014
if (error) {
1015
IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
1016
return -1;
1017
}
1018
return 0;
1019
}
1020
1021
/**
1022
* iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
1023
* @priv: staging_rxon is compared to active_rxon
1024
*
1025
* If the RXON structure is changing enough to require a new tune,
1026
* or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
1027
* a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
1028
*/
1029
static int iwl4965_full_rxon_required(struct iwl4965_priv *priv)
1030
{
1031
1032
/* These items are only settable from the full RXON command */
1033
if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
1034
compare_ether_addr(priv->staging_rxon.bssid_addr,
1035
priv->active_rxon.bssid_addr) ||
1036
compare_ether_addr(priv->staging_rxon.node_addr,
1037
priv->active_rxon.node_addr) ||
1038
compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
1039
priv->active_rxon.wlap_bssid_addr) ||
1040
(priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
1041
(priv->staging_rxon.channel != priv->active_rxon.channel) ||
1042
(priv->staging_rxon.air_propagation !=
1043
priv->active_rxon.air_propagation) ||
1044
(priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
1045
priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
1046
(priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
1047
priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
1048
(priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
1049
(priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
1050
return 1;
1051
1052
/* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
1053
* be updated with the RXON_ASSOC command -- however only some
1054
* flag transitions are allowed using RXON_ASSOC */
1055
1056
/* Check if we are not switching bands */
1057
if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
1058
(priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
1059
return 1;
1060
1061
/* Check if we are switching association toggle */
1062
if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
1063
(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
1064
return 1;
1065
1066
return 0;
1067
}
1068
1069
static int iwl4965_send_rxon_assoc(struct iwl4965_priv *priv)
1070
{
1071
int rc = 0;
1072
struct iwl4965_rx_packet *res = NULL;
1073
struct iwl4965_rxon_assoc_cmd rxon_assoc;
1074
struct iwl4965_host_cmd cmd = {
1075
.id = REPLY_RXON_ASSOC,
1076
.len = sizeof(rxon_assoc),
1077
.meta.flags = CMD_WANT_SKB,
1078
.data = &rxon_assoc,
1079
};
1080
const struct iwl4965_rxon_cmd *rxon1 = &priv->staging_rxon;
1081
const struct iwl4965_rxon_cmd *rxon2 = &priv->active_rxon;
1082
1083
if ((rxon1->flags == rxon2->flags) &&
1084
(rxon1->filter_flags == rxon2->filter_flags) &&
1085
(rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1086
(rxon1->ofdm_ht_single_stream_basic_rates ==
1087
rxon2->ofdm_ht_single_stream_basic_rates) &&
1088
(rxon1->ofdm_ht_dual_stream_basic_rates ==
1089
rxon2->ofdm_ht_dual_stream_basic_rates) &&
1090
(rxon1->rx_chain == rxon2->rx_chain) &&
1091
(rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1092
IWL_DEBUG_INFO("Using current RXON_ASSOC. Not resending.\n");
1093
return 0;
1094
}
1095
1096
rxon_assoc.flags = priv->staging_rxon.flags;
1097
rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1098
rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1099
rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1100
rxon_assoc.reserved = 0;
1101
rxon_assoc.ofdm_ht_single_stream_basic_rates =
1102
priv->staging_rxon.ofdm_ht_single_stream_basic_rates;
1103
rxon_assoc.ofdm_ht_dual_stream_basic_rates =
1104
priv->staging_rxon.ofdm_ht_dual_stream_basic_rates;
1105
rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain;
1106
1107
rc = iwl4965_send_cmd_sync(priv, &cmd);
1108
if (rc)
1109
return rc;
1110
1111
res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1112
if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1113
IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1114
rc = -EIO;
1115
}
1116
1117
priv->alloc_rxb_skb--;
1118
dev_kfree_skb_any(cmd.meta.u.skb);
1119
1120
return rc;
1121
}
1122
1123
/**
1124
* iwl4965_commit_rxon - commit staging_rxon to hardware
1125
*
1126
* The RXON command in staging_rxon is committed to the hardware and
1127
* the active_rxon structure is updated with the new data. This
1128
* function correctly transitions out of the RXON_ASSOC_MSK state if
1129
* a HW tune is required based on the RXON structure changes.
1130
*/
1131
static int iwl4965_commit_rxon(struct iwl4965_priv *priv)
1132
{
1133
/* cast away the const for active_rxon in this function */
1134
struct iwl4965_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
1135
int rc = 0;
1136
1137
if (!iwl4965_is_alive(priv))
1138
return -1;
1139
1140
/* always get timestamp with Rx frame */
1141
priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
1142
1143
rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
1144
if (rc) {
1145
IWL_ERROR("Invalid RXON configuration. Not committing.\n");
1146
return -EINVAL;
1147
}
1148
1149
/* If we don't need to send a full RXON, we can use
1150
* iwl4965_rxon_assoc_cmd which is used to reconfigure filter
1151
* and other flags for the current radio configuration. */
1152
if (!iwl4965_full_rxon_required(priv)) {
1153
rc = iwl4965_send_rxon_assoc(priv);
1154
if (rc) {
1155
IWL_ERROR("Error setting RXON_ASSOC "
1156
"configuration (%d).\n", rc);
1157
return rc;
1158
}
1159
1160
memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1161
1162
return 0;
1163
}
1164
1165
/* station table will be cleared */
1166
priv->assoc_station_added = 0;
1167
1168
#ifdef CONFIG_IWL4965_SENSITIVITY
1169
priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1170
if (!priv->error_recovering)
1171
priv->start_calib = 0;
1172
1173
iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1174
#endif /* CONFIG_IWL4965_SENSITIVITY */
1175
1176
/* If we are currently associated and the new config requires
1177
* an RXON_ASSOC and the new config wants the associated mask enabled,
1178
* we must clear the associated from the active configuration
1179
* before we apply the new config */
1180
if (iwl4965_is_associated(priv) &&
1181
(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
1182
IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1183
active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1184
1185
rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON,
1186
sizeof(struct iwl4965_rxon_cmd),
1187
&priv->active_rxon);
1188
1189
/* If the mask clearing failed then we set
1190
* active_rxon back to what it was previously */
1191
if (rc) {
1192
active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1193
IWL_ERROR("Error clearing ASSOC_MSK on current "
1194
"configuration (%d).\n", rc);
1195
return rc;
1196
}
1197
}
1198
1199
IWL_DEBUG_INFO("Sending RXON\n"
1200
"* with%s RXON_FILTER_ASSOC_MSK\n"
1201
"* channel = %d\n"
1202
"* bssid = " MAC_FMT "\n",
1203
((priv->staging_rxon.filter_flags &
1204
RXON_FILTER_ASSOC_MSK) ? "" : "out"),
1205
le16_to_cpu(priv->staging_rxon.channel),
1206
MAC_ARG(priv->staging_rxon.bssid_addr));
1207
1208
/* Apply the new configuration */
1209
rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON,
1210
sizeof(struct iwl4965_rxon_cmd), &priv->staging_rxon);
1211
if (rc) {
1212
IWL_ERROR("Error setting new configuration (%d).\n", rc);
1213
return rc;
1214
}
1215
1216
iwl4965_clear_stations_table(priv);
1217
1218
#ifdef CONFIG_IWL4965_SENSITIVITY
1219
if (!priv->error_recovering)
1220
priv->start_calib = 0;
1221
1222
priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1223
iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1224
#endif /* CONFIG_IWL4965_SENSITIVITY */
1225
1226
memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1227
1228
/* If we issue a new RXON command which required a tune then we must
1229
* send a new TXPOWER command or we won't be able to Tx any frames */
1230
rc = iwl4965_hw_reg_send_txpower(priv);
1231
if (rc) {
1232
IWL_ERROR("Error setting Tx power (%d).\n", rc);
1233
return rc;
1234
}
1235
1236
/* Add the broadcast address so we can send broadcast frames */
1237
if (iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0) ==
1238
IWL_INVALID_STATION) {
1239
IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1240
return -EIO;
1241
}
1242
1243
/* If we have set the ASSOC_MSK and we are in BSS mode then
1244
* add the IWL_AP_ID to the station rate table */
1245
if (iwl4965_is_associated(priv) &&
1246
(priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
1247
if (iwl4965_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
1248
== IWL_INVALID_STATION) {
1249
IWL_ERROR("Error adding AP address for transmit.\n");
1250
return -EIO;
1251
}
1252
priv->assoc_station_added = 1;
1253
}
1254
1255
return 0;
1256
}
1257
1258
static int iwl4965_send_bt_config(struct iwl4965_priv *priv)
1259
{
1260
struct iwl4965_bt_cmd bt_cmd = {
1261
.flags = 3,
1262
.lead_time = 0xAA,
1263
.max_kill = 1,
1264
.kill_ack_mask = 0,
1265
.kill_cts_mask = 0,
1266
};
1267
1268
return iwl4965_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1269
sizeof(struct iwl4965_bt_cmd), &bt_cmd);
1270
}
1271
1272
static int iwl4965_send_scan_abort(struct iwl4965_priv *priv)
1273
{
1274
int rc = 0;
1275
struct iwl4965_rx_packet *res;
1276
struct iwl4965_host_cmd cmd = {
1277
.id = REPLY_SCAN_ABORT_CMD,
1278
.meta.flags = CMD_WANT_SKB,
1279
};
1280
1281
/* If there isn't a scan actively going on in the hardware
1282
* then we are in between scan bands and not actually
1283
* actively scanning, so don't send the abort command */
1284
if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1285
clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1286
return 0;
1287
}
1288
1289
rc = iwl4965_send_cmd_sync(priv, &cmd);
1290
if (rc) {
1291
clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1292
return rc;
1293
}
1294
1295
res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1296
if (res->u.status != CAN_ABORT_STATUS) {
1297
/* The scan abort will return 1 for success or
1298
* 2 for "failure". A failure condition can be
1299
* due to simply not being in an active scan which
1300
* can occur if we send the scan abort before we
1301
* the microcode has notified us that a scan is
1302
* completed. */
1303
IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1304
clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1305
clear_bit(STATUS_SCAN_HW, &priv->status);
1306
}
1307
1308
dev_kfree_skb_any(cmd.meta.u.skb);
1309
1310
return rc;
1311
}
1312
1313
static int iwl4965_card_state_sync_callback(struct iwl4965_priv *priv,
1314
struct iwl4965_cmd *cmd,
1315
struct sk_buff *skb)
1316
{
1317
return 1;
1318
}
1319
1320
/*
1321
* CARD_STATE_CMD
1322
*
1323
* Use: Sets the device's internal card state to enable, disable, or halt
1324
*
1325
* When in the 'enable' state the card operates as normal.
1326
* When in the 'disable' state, the card enters into a low power mode.
1327
* When in the 'halt' state, the card is shut down and must be fully
1328
* restarted to come back on.
1329
*/
1330
static int iwl4965_send_card_state(struct iwl4965_priv *priv, u32 flags, u8 meta_flag)
1331
{
1332
struct iwl4965_host_cmd cmd = {
1333
.id = REPLY_CARD_STATE_CMD,
1334
.len = sizeof(u32),
1335
.data = &flags,
1336
.meta.flags = meta_flag,
1337
};
1338
1339
if (meta_flag & CMD_ASYNC)
1340
cmd.meta.u.callback = iwl4965_card_state_sync_callback;
1341
1342
return iwl4965_send_cmd(priv, &cmd);
1343
}
1344
1345
static int iwl4965_add_sta_sync_callback(struct iwl4965_priv *priv,
1346
struct iwl4965_cmd *cmd, struct sk_buff *skb)
1347
{
1348
struct iwl4965_rx_packet *res = NULL;
1349
1350
if (!skb) {
1351
IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1352
return 1;
1353
}
1354
1355
res = (struct iwl4965_rx_packet *)skb->data;
1356
if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1357
IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1358
res->hdr.flags);
1359
return 1;
1360
}
1361
1362
switch (res->u.add_sta.status) {
1363
case ADD_STA_SUCCESS_MSK:
1364
break;
1365
default:
1366
break;
1367
}
1368
1369
/* We didn't cache the SKB; let the caller free it */
1370
return 1;
1371
}
1372
1373
int iwl4965_send_add_station(struct iwl4965_priv *priv,
1374
struct iwl4965_addsta_cmd *sta, u8 flags)
1375
{
1376
struct iwl4965_rx_packet *res = NULL;
1377
int rc = 0;
1378
struct iwl4965_host_cmd cmd = {
1379
.id = REPLY_ADD_STA,
1380
.len = sizeof(struct iwl4965_addsta_cmd),
1381
.meta.flags = flags,
1382
.data = sta,
1383
};
1384
1385
if (flags & CMD_ASYNC)
1386
cmd.meta.u.callback = iwl4965_add_sta_sync_callback;
1387
else
1388
cmd.meta.flags |= CMD_WANT_SKB;
1389
1390
rc = iwl4965_send_cmd(priv, &cmd);
1391
1392
if (rc || (flags & CMD_ASYNC))
1393
return rc;
1394
1395
res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1396
if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1397
IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1398
res->hdr.flags);
1399
rc = -EIO;
1400
}
1401
1402
if (rc == 0) {
1403
switch (res->u.add_sta.status) {
1404
case ADD_STA_SUCCESS_MSK:
1405
IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1406
break;
1407
default:
1408
rc = -EIO;
1409
IWL_WARNING("REPLY_ADD_STA failed\n");
1410
break;
1411
}
1412
}
1413
1414
priv->alloc_rxb_skb--;
1415
dev_kfree_skb_any(cmd.meta.u.skb);
1416
1417
return rc;
1418
}
1419
1420
static int iwl4965_update_sta_key_info(struct iwl4965_priv *priv,
1421
struct ieee80211_key_conf *keyconf,
1422
u8 sta_id)
1423
{
1424
unsigned long flags;
1425
__le16 key_flags = 0;
1426
1427
switch (keyconf->alg) {
1428
case ALG_CCMP:
1429
key_flags |= STA_KEY_FLG_CCMP;
1430
key_flags |= cpu_to_le16(
1431
keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1432
key_flags &= ~STA_KEY_FLG_INVALID;
1433
break;
1434
case ALG_TKIP:
1435
case ALG_WEP:
1436
default:
1437
return -EINVAL;
1438
}
1439
spin_lock_irqsave(&priv->sta_lock, flags);
1440
priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1441
priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1442
memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1443
keyconf->keylen);
1444
1445
memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1446
keyconf->keylen);
1447
priv->stations[sta_id].sta.key.key_flags = key_flags;
1448
priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1449
priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1450
1451
spin_unlock_irqrestore(&priv->sta_lock, flags);
1452
1453
IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1454
iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1455
return 0;
1456
}
1457
1458
static int iwl4965_clear_sta_key_info(struct iwl4965_priv *priv, u8 sta_id)
1459
{
1460
unsigned long flags;
1461
1462
spin_lock_irqsave(&priv->sta_lock, flags);
1463
memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl4965_hw_key));
1464
memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl4965_keyinfo));
1465
priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1466
priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1467
priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1468
spin_unlock_irqrestore(&priv->sta_lock, flags);
1469
1470
IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1471
iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1472
return 0;
1473
}
1474
1475
static void iwl4965_clear_free_frames(struct iwl4965_priv *priv)
1476
{
1477
struct list_head *element;
1478
1479
IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1480
priv->frames_count);
1481
1482
while (!list_empty(&priv->free_frames)) {
1483
element = priv->free_frames.next;
1484
list_del(element);
1485
kfree(list_entry(element, struct iwl4965_frame, list));
1486
priv->frames_count--;
1487
}
1488
1489
if (priv->frames_count) {
1490
IWL_WARNING("%d frames still in use. Did we lose one?\n",
1491
priv->frames_count);
1492
priv->frames_count = 0;
1493
}
1494
}
1495
1496
static struct iwl4965_frame *iwl4965_get_free_frame(struct iwl4965_priv *priv)
1497
{
1498
struct iwl4965_frame *frame;
1499
struct list_head *element;
1500
if (list_empty(&priv->free_frames)) {
1501
frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1502
if (!frame) {
1503
IWL_ERROR("Could not allocate frame!\n");
1504
return NULL;
1505
}
1506
1507
priv->frames_count++;
1508
return frame;
1509
}
1510
1511
element = priv->free_frames.next;
1512
list_del(element);
1513
return list_entry(element, struct iwl4965_frame, list);
1514
}
1515
1516
static void iwl4965_free_frame(struct iwl4965_priv *priv, struct iwl4965_frame *frame)
1517
{
1518
memset(frame, 0, sizeof(*frame));
1519
list_add(&frame->list, &priv->free_frames);
1520
}
1521
1522
unsigned int iwl4965_fill_beacon_frame(struct iwl4965_priv *priv,
1523
struct ieee80211_hdr *hdr,
1524
const u8 *dest, int left)
1525
{
1526
1527
if (!iwl4965_is_associated(priv) || !priv->ibss_beacon ||
1528
((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1529
(priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1530
return 0;
1531
1532
if (priv->ibss_beacon->len > left)
1533
return 0;
1534
1535
memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1536
1537
return priv->ibss_beacon->len;
1538
}
1539
1540
int iwl4965_rate_index_from_plcp(int plcp)
1541
{
1542
int i = 0;
1543
1544
/* 4965 HT rate format */
1545
if (plcp & RATE_MCS_HT_MSK) {
1546
i = (plcp & 0xff);
1547
1548
if (i >= IWL_RATE_MIMO_6M_PLCP)
1549
i = i - IWL_RATE_MIMO_6M_PLCP;
1550
1551
i += IWL_FIRST_OFDM_RATE;
1552
/* skip 9M not supported in ht*/
1553
if (i >= IWL_RATE_9M_INDEX)
1554
i += 1;
1555
if ((i >= IWL_FIRST_OFDM_RATE) &&
1556
(i <= IWL_LAST_OFDM_RATE))
1557
return i;
1558
1559
/* 4965 legacy rate format, search for match in table */
1560
} else {
1561
for (i = 0; i < ARRAY_SIZE(iwl4965_rates); i++)
1562
if (iwl4965_rates[i].plcp == (plcp &0xFF))
1563
return i;
1564
}
1565
return -1;
1566
}
1567
1568
static u8 iwl4965_rate_get_lowest_plcp(int rate_mask)
1569
{
1570
u8 i;
1571
1572
for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1573
i = iwl4965_rates[i].next_ieee) {
1574
if (rate_mask & (1 << i))
1575
return iwl4965_rates[i].plcp;
1576
}
1577
1578
return IWL_RATE_INVALID;
1579
}
1580
1581
static int iwl4965_send_beacon_cmd(struct iwl4965_priv *priv)
1582
{
1583
struct iwl4965_frame *frame;
1584
unsigned int frame_size;
1585
int rc;
1586
u8 rate;
1587
1588
frame = iwl4965_get_free_frame(priv);
1589
1590
if (!frame) {
1591
IWL_ERROR("Could not obtain free frame buffer for beacon "
1592
"command.\n");
1593
return -ENOMEM;
1594
}
1595
1596
if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1597
rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic &
1598
0xFF0);
1599
if (rate == IWL_INVALID_RATE)
1600
rate = IWL_RATE_6M_PLCP;
1601
} else {
1602
rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1603
if (rate == IWL_INVALID_RATE)
1604
rate = IWL_RATE_1M_PLCP;
1605
}
1606
1607
frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
1608
1609
rc = iwl4965_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1610
&frame->u.cmd[0]);
1611
1612
iwl4965_free_frame(priv, frame);
1613
1614
return rc;
1615
}
1616
1617
/******************************************************************************
1618
*
1619
* EEPROM related functions
1620
*
1621
******************************************************************************/
1622
1623
static void get_eeprom_mac(struct iwl4965_priv *priv, u8 *mac)
1624
{
1625
memcpy(mac, priv->eeprom.mac_address, 6);
1626
}
1627
1628
/**
1629
* iwl4965_eeprom_init - read EEPROM contents
1630
*
1631
* Load the EEPROM contents from adapter into priv->eeprom
1632
*
1633
* NOTE: This routine uses the non-debug IO access functions.
1634
*/
1635
int iwl4965_eeprom_init(struct iwl4965_priv *priv)
1636
{
1637
u16 *e = (u16 *)&priv->eeprom;
1638
u32 gp = iwl4965_read32(priv, CSR_EEPROM_GP);
1639
u32 r;
1640
int sz = sizeof(priv->eeprom);
1641
int rc;
1642
int i;
1643
u16 addr;
1644
1645
/* The EEPROM structure has several padding buffers within it
1646
* and when adding new EEPROM maps is subject to programmer errors
1647
* which may be very difficult to identify without explicitly
1648
* checking the resulting size of the eeprom map. */
1649
BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);
1650
1651
if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1652
IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp);
1653
return -ENOENT;
1654
}
1655
1656
/* Make sure driver (instead of uCode) is allowed to read EEPROM */
1657
rc = iwl4965_eeprom_acquire_semaphore(priv);
1658
if (rc < 0) {
1659
IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
1660
return -ENOENT;
1661
}
1662
1663
/* eeprom is an array of 16bit values */
1664
for (addr = 0; addr < sz; addr += sizeof(u16)) {
1665
_iwl4965_write32(priv, CSR_EEPROM_REG, addr << 1);
1666
_iwl4965_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1667
1668
for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT;
1669
i += IWL_EEPROM_ACCESS_DELAY) {
1670
r = _iwl4965_read_direct32(priv, CSR_EEPROM_REG);
1671
if (r & CSR_EEPROM_REG_READ_VALID_MSK)
1672
break;
1673
udelay(IWL_EEPROM_ACCESS_DELAY);
1674
}
1675
1676
if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) {
1677
IWL_ERROR("Time out reading EEPROM[%d]", addr);
1678
rc = -ETIMEDOUT;
1679
goto done;
1680
}
1681
e[addr / 2] = le16_to_cpu(r >> 16);
1682
}
1683
rc = 0;
1684
1685
done:
1686
iwl4965_eeprom_release_semaphore(priv);
1687
return rc;
1688
}
1689
1690
/******************************************************************************
1691
*
1692
* Misc. internal state and helper functions
1693
*
1694
******************************************************************************/
1695
#ifdef CONFIG_IWL4965_DEBUG
1696
1697
/**
1698
* iwl4965_report_frame - dump frame to syslog during debug sessions
1699
*
1700
* You may hack this function to show different aspects of received frames,
1701
* including selective frame dumps.
1702
* group100 parameter selects whether to show 1 out of 100 good frames.
1703
*
1704
* TODO: This was originally written for 3945, need to audit for
1705
* proper operation with 4965.
1706
*/
1707
void iwl4965_report_frame(struct iwl4965_priv *priv,
1708
struct iwl4965_rx_packet *pkt,
1709
struct ieee80211_hdr *header, int group100)
1710
{
1711
u32 to_us;
1712
u32 print_summary = 0;
1713
u32 print_dump = 0; /* set to 1 to dump all frames' contents */
1714
u32 hundred = 0;
1715
u32 dataframe = 0;
1716
u16 fc;
1717
u16 seq_ctl;
1718
u16 channel;
1719
u16 phy_flags;
1720
int rate_sym;
1721
u16 length;
1722
u16 status;
1723
u16 bcn_tmr;
1724
u32 tsf_low;
1725
u64 tsf;
1726
u8 rssi;
1727
u8 agc;
1728
u16 sig_avg;
1729
u16 noise_diff;
1730
struct iwl4965_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
1731
struct iwl4965_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
1732
struct iwl4965_rx_frame_end *rx_end = IWL_RX_END(pkt);
1733
u8 *data = IWL_RX_DATA(pkt);
1734
1735
/* MAC header */
1736
fc = le16_to_cpu(header->frame_control);
1737
seq_ctl = le16_to_cpu(header->seq_ctrl);
1738
1739
/* metadata */
1740
channel = le16_to_cpu(rx_hdr->channel);
1741
phy_flags = le16_to_cpu(rx_hdr->phy_flags);
1742
rate_sym = rx_hdr->rate;
1743
length = le16_to_cpu(rx_hdr->len);
1744
1745
/* end-of-frame status and timestamp */
1746
status = le32_to_cpu(rx_end->status);
1747
bcn_tmr = le32_to_cpu(rx_end->beacon_timestamp);
1748
tsf_low = le64_to_cpu(rx_end->timestamp) & 0x0ffffffff;
1749
tsf = le64_to_cpu(rx_end->timestamp);
1750
1751
/* signal statistics */
1752
rssi = rx_stats->rssi;
1753
agc = rx_stats->agc;
1754
sig_avg = le16_to_cpu(rx_stats->sig_avg);
1755
noise_diff = le16_to_cpu(rx_stats->noise_diff);
1756
1757
to_us = !compare_ether_addr(header->addr1, priv->mac_addr);
1758
1759
/* if data frame is to us and all is good,
1760
* (optionally) print summary for only 1 out of every 100 */
1761
if (to_us && (fc & ~IEEE80211_FCTL_PROTECTED) ==
1762
(IEEE80211_FCTL_FROMDS | IEEE80211_FTYPE_DATA)) {
1763
dataframe = 1;
1764
if (!group100)
1765
print_summary = 1; /* print each frame */
1766
else if (priv->framecnt_to_us < 100) {
1767
priv->framecnt_to_us++;
1768
print_summary = 0;
1769
} else {
1770
priv->framecnt_to_us = 0;
1771
print_summary = 1;
1772
hundred = 1;
1773
}
1774
} else {
1775
/* print summary for all other frames */
1776
print_summary = 1;
1777
}
1778
1779
if (print_summary) {
1780
char *title;
1781
u32 rate;
1782
1783
if (hundred)
1784
title = "100Frames";
1785
else if (fc & IEEE80211_FCTL_RETRY)
1786
title = "Retry";
1787
else if (ieee80211_is_assoc_response(fc))
1788
title = "AscRsp";
1789
else if (ieee80211_is_reassoc_response(fc))
1790
title = "RasRsp";
1791
else if (ieee80211_is_probe_response(fc)) {
1792
title = "PrbRsp";
1793
print_dump = 1; /* dump frame contents */
1794
} else if (ieee80211_is_beacon(fc)) {
1795
title = "Beacon";
1796
print_dump = 1; /* dump frame contents */
1797
} else if (ieee80211_is_atim(fc))
1798
title = "ATIM";
1799
else if (ieee80211_is_auth(fc))
1800
title = "Auth";
1801
else if (ieee80211_is_deauth(fc))
1802
title = "DeAuth";
1803
else if (ieee80211_is_disassoc(fc))
1804
title = "DisAssoc";
1805
else
1806
title = "Frame";
1807
1808
rate = iwl4965_rate_index_from_plcp(rate_sym);
1809
if (rate == -1)
1810
rate = 0;
1811
else
1812
rate = iwl4965_rates[rate].ieee / 2;
1813
1814
/* print frame summary.
1815
* MAC addresses show just the last byte (for brevity),
1816
* but you can hack it to show more, if you'd like to. */
1817
if (dataframe)
1818
IWL_DEBUG_RX("%s: mhd=0x%04x, dst=0x%02x, "
1819
"len=%u, rssi=%d, chnl=%d, rate=%u, \n",
1820
title, fc, header->addr1[5],
1821
length, rssi, channel, rate);
1822
else {
1823
/* src/dst addresses assume managed mode */
1824
IWL_DEBUG_RX("%s: 0x%04x, dst=0x%02x, "
1825
"src=0x%02x, rssi=%u, tim=%lu usec, "
1826
"phy=0x%02x, chnl=%d\n",
1827
title, fc, header->addr1[5],
1828
header->addr3[5], rssi,
1829
tsf_low - priv->scan_start_tsf,
1830
phy_flags, channel);
1831
}
1832
}
1833
if (print_dump)
1834
iwl4965_print_hex_dump(IWL_DL_RX, data, length);
1835
}
1836
#endif
1837
1838
static void iwl4965_unset_hw_setting(struct iwl4965_priv *priv)
1839
{
1840
if (priv->hw_setting.shared_virt)
1841
pci_free_consistent(priv->pci_dev,
1842
sizeof(struct iwl4965_shared),
1843
priv->hw_setting.shared_virt,
1844
priv->hw_setting.shared_phys);
1845
}
1846
1847
/**
1848
* iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
1849
*
1850
* return : set the bit for each supported rate insert in ie
1851
*/
1852
static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1853
u16 basic_rate, int *left)
1854
{
1855
u16 ret_rates = 0, bit;
1856
int i;
1857
u8 *cnt = ie;
1858
u8 *rates = ie + 1;
1859
1860
for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1861
if (bit & supported_rate) {
1862
ret_rates |= bit;
1863
rates[*cnt] = iwl4965_rates[i].ieee |
1864
((bit & basic_rate) ? 0x80 : 0x00);
1865
(*cnt)++;
1866
(*left)--;
1867
if ((*left <= 0) ||
1868
(*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1869
break;
1870
}
1871
}
1872
1873
return ret_rates;
1874
}
1875
1876
#ifdef CONFIG_IWL4965_HT
1877
void static iwl4965_set_ht_capab(struct ieee80211_hw *hw,
1878
struct ieee80211_ht_capability *ht_cap,
1879
u8 use_wide_chan);
1880
#endif
1881
1882
/**
1883
* iwl4965_fill_probe_req - fill in all required fields and IE for probe request
1884
*/
1885
static u16 iwl4965_fill_probe_req(struct iwl4965_priv *priv,
1886
struct ieee80211_mgmt *frame,
1887
int left, int is_direct)
1888
{
1889
int len = 0;
1890
u8 *pos = NULL;
1891
u16 active_rates, ret_rates, cck_rates, active_rate_basic;
1892
1893
/* Make sure there is enough space for the probe request,
1894
* two mandatory IEs and the data */
1895
left -= 24;
1896
if (left < 0)
1897
return 0;
1898
len += 24;
1899
1900
frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1901
memcpy(frame->da, iwl4965_broadcast_addr, ETH_ALEN);
1902
memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1903
memcpy(frame->bssid, iwl4965_broadcast_addr, ETH_ALEN);
1904
frame->seq_ctrl = 0;
1905
1906
/* fill in our indirect SSID IE */
1907
/* ...next IE... */
1908
1909
left -= 2;
1910
if (left < 0)
1911
return 0;
1912
len += 2;
1913
pos = &(frame->u.probe_req.variable[0]);
1914
*pos++ = WLAN_EID_SSID;
1915
*pos++ = 0;
1916
1917
/* fill in our direct SSID IE... */
1918
if (is_direct) {
1919
/* ...next IE... */
1920
left -= 2 + priv->essid_len;
1921
if (left < 0)
1922
return 0;
1923
/* ... fill it in... */
1924
*pos++ = WLAN_EID_SSID;
1925
*pos++ = priv->essid_len;
1926
memcpy(pos, priv->essid, priv->essid_len);
1927
pos += priv->essid_len;
1928
len += 2 + priv->essid_len;
1929
}
1930
1931
/* fill in supported rate */
1932
/* ...next IE... */
1933
left -= 2;
1934
if (left < 0)
1935
return 0;
1936
1937
/* ... fill it in... */
1938
*pos++ = WLAN_EID_SUPP_RATES;
1939
*pos = 0;
1940
1941
/* exclude 60M rate */
1942
active_rates = priv->rates_mask;
1943
active_rates &= ~IWL_RATE_60M_MASK;
1944
1945
active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
1946
1947
cck_rates = IWL_CCK_RATES_MASK & active_rates;
1948
ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
1949
active_rate_basic, &left);
1950
active_rates &= ~ret_rates;
1951
1952
ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
1953
active_rate_basic, &left);
1954
active_rates &= ~ret_rates;
1955
1956
len += 2 + *pos;
1957
pos += (*pos) + 1;
1958
if (active_rates == 0)
1959
goto fill_end;
1960
1961
/* fill in supported extended rate */
1962
/* ...next IE... */
1963
left -= 2;
1964
if (left < 0)
1965
return 0;
1966
/* ... fill it in... */
1967
*pos++ = WLAN_EID_EXT_SUPP_RATES;
1968
*pos = 0;
1969
iwl4965_supported_rate_to_ie(pos, active_rates,
1970
active_rate_basic, &left);
1971
if (*pos > 0)
1972
len += 2 + *pos;
1973
1974
#ifdef CONFIG_IWL4965_HT
1975
if (is_direct && priv->is_ht_enabled) {
1976
u8 use_wide_chan = 1;
1977
1978
if (priv->channel_width != IWL_CHANNEL_WIDTH_40MHZ)
1979
use_wide_chan = 0;
1980
pos += (*pos) + 1;
1981
*pos++ = WLAN_EID_HT_CAPABILITY;
1982
*pos++ = sizeof(struct ieee80211_ht_capability);
1983
iwl4965_set_ht_capab(NULL, (struct ieee80211_ht_capability *)pos,
1984
use_wide_chan);
1985
len += 2 + sizeof(struct ieee80211_ht_capability);
1986
}
1987
#endif /*CONFIG_IWL4965_HT */
1988
1989
fill_end:
1990
return (u16)len;
1991
}
1992
1993
/*
1994
* QoS support
1995
*/
1996
#ifdef CONFIG_IWL4965_QOS
1997
static int iwl4965_send_qos_params_command(struct iwl4965_priv *priv,
1998
struct iwl4965_qosparam_cmd *qos)
1999
{
2000
2001
return iwl4965_send_cmd_pdu(priv, REPLY_QOS_PARAM,
2002
sizeof(struct iwl4965_qosparam_cmd), qos);
2003
}
2004
2005
static void iwl4965_reset_qos(struct iwl4965_priv *priv)
2006
{
2007
u16 cw_min = 15;
2008
u16 cw_max = 1023;
2009
u8 aifs = 2;
2010
u8 is_legacy = 0;
2011
unsigned long flags;
2012
int i;
2013
2014
spin_lock_irqsave(&priv->lock, flags);
2015
priv->qos_data.qos_active = 0;
2016
2017
if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) {
2018
if (priv->qos_data.qos_enable)
2019
priv->qos_data.qos_active = 1;
2020
if (!(priv->active_rate & 0xfff0)) {
2021
cw_min = 31;
2022
is_legacy = 1;
2023
}
2024
} else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2025
if (priv->qos_data.qos_enable)
2026
priv->qos_data.qos_active = 1;
2027
} else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
2028
cw_min = 31;
2029
is_legacy = 1;
2030
}
2031
2032
if (priv->qos_data.qos_active)
2033
aifs = 3;
2034
2035
priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
2036
priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
2037
priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
2038
priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
2039
priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
2040
2041
if (priv->qos_data.qos_active) {
2042
i = 1;
2043
priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
2044
priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
2045
priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
2046
priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
2047
priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2048
2049
i = 2;
2050
priv->qos_data.def_qos_parm.ac[i].cw_min =
2051
cpu_to_le16((cw_min + 1) / 2 - 1);
2052
priv->qos_data.def_qos_parm.ac[i].cw_max =
2053
cpu_to_le16(cw_max);
2054
priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
2055
if (is_legacy)
2056
priv->qos_data.def_qos_parm.ac[i].edca_txop =
2057
cpu_to_le16(6016);
2058
else
2059
priv->qos_data.def_qos_parm.ac[i].edca_txop =
2060
cpu_to_le16(3008);
2061
priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2062
2063
i = 3;
2064
priv->qos_data.def_qos_parm.ac[i].cw_min =
2065
cpu_to_le16((cw_min + 1) / 4 - 1);
2066
priv->qos_data.def_qos_parm.ac[i].cw_max =
2067
cpu_to_le16((cw_max + 1) / 2 - 1);
2068
priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
2069
priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2070
if (is_legacy)
2071
priv->qos_data.def_qos_parm.ac[i].edca_txop =
2072
cpu_to_le16(3264);
2073
else
2074
priv->qos_data.def_qos_parm.ac[i].edca_txop =
2075
cpu_to_le16(1504);
2076
} else {
2077
for (i = 1; i < 4; i++) {
2078
priv->qos_data.def_qos_parm.ac[i].cw_min =
2079
cpu_to_le16(cw_min);
2080
priv->qos_data.def_qos_parm.ac[i].cw_max =
2081
cpu_to_le16(cw_max);
2082
priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
2083
priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
2084
priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2085
}
2086
}
2087
IWL_DEBUG_QOS("set QoS to default \n");
2088
2089
spin_unlock_irqrestore(&priv->lock, flags);
2090
}
2091
2092
static void iwl4965_activate_qos(struct iwl4965_priv *priv, u8 force)
2093
{
2094
unsigned long flags;
2095
2096
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2097
return;
2098
2099
if (!priv->qos_data.qos_enable)
2100
return;
2101
2102
spin_lock_irqsave(&priv->lock, flags);
2103
priv->qos_data.def_qos_parm.qos_flags = 0;
2104
2105
if (priv->qos_data.qos_cap.q_AP.queue_request &&
2106
!priv->qos_data.qos_cap.q_AP.txop_request)
2107
priv->qos_data.def_qos_parm.qos_flags |=
2108
QOS_PARAM_FLG_TXOP_TYPE_MSK;
2109
if (priv->qos_data.qos_active)
2110
priv->qos_data.def_qos_parm.qos_flags |=
2111
QOS_PARAM_FLG_UPDATE_EDCA_MSK;
2112
2113
#ifdef CONFIG_IWL4965_HT
2114
if (priv->is_ht_enabled && priv->current_assoc_ht.is_ht)
2115
priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
2116
#endif /* CONFIG_IWL4965_HT */
2117
2118
spin_unlock_irqrestore(&priv->lock, flags);
2119
2120
if (force || iwl4965_is_associated(priv)) {
2121
IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
2122
priv->qos_data.qos_active,
2123
priv->qos_data.def_qos_parm.qos_flags);
2124
2125
iwl4965_send_qos_params_command(priv,
2126
&(priv->qos_data.def_qos_parm));
2127
}
2128
}
2129
2130
#endif /* CONFIG_IWL4965_QOS */
2131
/*
2132
* Power management (not Tx power!) functions
2133
*/
2134
#define MSEC_TO_USEC 1024
2135
2136
#define NOSLP __constant_cpu_to_le16(0), 0, 0
2137
#define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
2138
#define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
2139
#define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
2140
__constant_cpu_to_le32(X1), \
2141
__constant_cpu_to_le32(X2), \
2142
__constant_cpu_to_le32(X3), \
2143
__constant_cpu_to_le32(X4)}
2144
2145
2146
/* default power management (not Tx power) table values */
2147
/* for tim 0-10 */
2148
static struct iwl4965_power_vec_entry range_0[IWL_POWER_AC] = {
2149
{{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2150
{{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
2151
{{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
2152
{{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
2153
{{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
2154
{{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
2155
};
2156
2157
/* for tim > 10 */
2158
static struct iwl4965_power_vec_entry range_1[IWL_POWER_AC] = {
2159
{{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2160
{{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
2161
SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
2162
{{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
2163
SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
2164
{{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
2165
SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
2166
{{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
2167
{{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
2168
SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
2169
};
2170
2171
int iwl4965_power_init_handle(struct iwl4965_priv *priv)
2172
{
2173
int rc = 0, i;
2174
struct iwl4965_power_mgr *pow_data;
2175
int size = sizeof(struct iwl4965_power_vec_entry) * IWL_POWER_AC;
2176
u16 pci_pm;
2177
2178
IWL_DEBUG_POWER("Initialize power \n");
2179
2180
pow_data = &(priv->power_data);
2181
2182
memset(pow_data, 0, sizeof(*pow_data));
2183
2184
pow_data->active_index = IWL_POWER_RANGE_0;
2185
pow_data->dtim_val = 0xffff;
2186
2187
memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
2188
memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
2189
2190
rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
2191
if (rc != 0)
2192
return 0;
2193
else {
2194
struct iwl4965_powertable_cmd *cmd;
2195
2196
IWL_DEBUG_POWER("adjust power command flags\n");
2197
2198
for (i = 0; i < IWL_POWER_AC; i++) {
2199
cmd = &pow_data->pwr_range_0[i].cmd;
2200
2201
if (pci_pm & 0x1)
2202
cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
2203
else
2204
cmd->flags |= IWL_POWER_PCI_PM_MSK;
2205
}
2206
}
2207
return rc;
2208
}
2209
2210
static int iwl4965_update_power_cmd(struct iwl4965_priv *priv,
2211
struct iwl4965_powertable_cmd *cmd, u32 mode)
2212
{
2213
int rc = 0, i;
2214
u8 skip;
2215
u32 max_sleep = 0;
2216
struct iwl4965_power_vec_entry *range;
2217
u8 period = 0;
2218
struct iwl4965_power_mgr *pow_data;
2219
2220
if (mode > IWL_POWER_INDEX_5) {
2221
IWL_DEBUG_POWER("Error invalid power mode \n");
2222
return -1;
2223
}
2224
pow_data = &(priv->power_data);
2225
2226
if (pow_data->active_index == IWL_POWER_RANGE_0)
2227
range = &pow_data->pwr_range_0[0];
2228
else
2229
range = &pow_data->pwr_range_1[1];
2230
2231
memcpy(cmd, &range[mode].cmd, sizeof(struct iwl4965_powertable_cmd));
2232
2233
#ifdef IWL_MAC80211_DISABLE
2234
if (priv->assoc_network != NULL) {
2235
unsigned long flags;
2236
2237
period = priv->assoc_network->tim.tim_period;
2238
}
2239
#endif /*IWL_MAC80211_DISABLE */
2240
skip = range[mode].no_dtim;
2241
2242
if (period == 0) {
2243
period = 1;
2244
skip = 0;
2245
}
2246
2247
if (skip == 0) {
2248
max_sleep = period;
2249
cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
2250
} else {
2251
__le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
2252
max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
2253
cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
2254
}
2255
2256
for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
2257
if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
2258
cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
2259
}
2260
2261
IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
2262
IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
2263
IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
2264
IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
2265
le32_to_cpu(cmd->sleep_interval[0]),
2266
le32_to_cpu(cmd->sleep_interval[1]),
2267
le32_to_cpu(cmd->sleep_interval[2]),
2268
le32_to_cpu(cmd->sleep_interval[3]),
2269
le32_to_cpu(cmd->sleep_interval[4]));
2270
2271
return rc;
2272
}
2273
2274
static int iwl4965_send_power_mode(struct iwl4965_priv *priv, u32 mode)
2275
{
2276
u32 final_mode = mode;
2277
int rc;
2278
struct iwl4965_powertable_cmd cmd;
2279
2280
/* If on battery, set to 3,
2281
* if plugged into AC power, set to CAM ("continuously aware mode"),
2282
* else user level */
2283
switch (mode) {
2284
case IWL_POWER_BATTERY:
2285
final_mode = IWL_POWER_INDEX_3;
2286
break;
2287
case IWL_POWER_AC:
2288
final_mode = IWL_POWER_MODE_CAM;
2289
break;
2290
default:
2291
final_mode = mode;
2292
break;
2293
}
2294
2295
cmd.keep_alive_beacons = 0;
2296
2297
iwl4965_update_power_cmd(priv, &cmd, final_mode);
2298
2299
rc = iwl4965_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
2300
2301
if (final_mode == IWL_POWER_MODE_CAM)
2302
clear_bit(STATUS_POWER_PMI, &priv->status);
2303
else
2304
set_bit(STATUS_POWER_PMI, &priv->status);
2305
2306
return rc;
2307
}
2308
2309
int iwl4965_is_network_packet(struct iwl4965_priv *priv, struct ieee80211_hdr *header)
2310
{
2311
/* Filter incoming packets to determine if they are targeted toward
2312
* this network, discarding packets coming from ourselves */
2313
switch (priv->iw_mode) {
2314
case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source | BSSID */
2315
/* packets from our adapter are dropped (echo) */
2316
if (!compare_ether_addr(header->addr2, priv->mac_addr))
2317
return 0;
2318
/* {broad,multi}cast packets to our IBSS go through */
2319
if (is_multicast_ether_addr(header->addr1))
2320
return !compare_ether_addr(header->addr3, priv->bssid);
2321
/* packets to our adapter go through */
2322
return !compare_ether_addr(header->addr1, priv->mac_addr);
2323
case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
2324
/* packets from our adapter are dropped (echo) */
2325
if (!compare_ether_addr(header->addr3, priv->mac_addr))
2326
return 0;
2327
/* {broad,multi}cast packets to our BSS go through */
2328
if (is_multicast_ether_addr(header->addr1))
2329
return !compare_ether_addr(header->addr2, priv->bssid);
2330
/* packets to our adapter go through */
2331
return !compare_ether_addr(header->addr1, priv->mac_addr);
2332
}
2333
2334
return 1;
2335
}
2336
2337
#define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2338
2339
static const char *iwl4965_get_tx_fail_reason(u32 status)
2340
{
2341
switch (status & TX_STATUS_MSK) {
2342
case TX_STATUS_SUCCESS:
2343
return "SUCCESS";
2344
TX_STATUS_ENTRY(SHORT_LIMIT);
2345
TX_STATUS_ENTRY(LONG_LIMIT);
2346
TX_STATUS_ENTRY(FIFO_UNDERRUN);
2347
TX_STATUS_ENTRY(MGMNT_ABORT);
2348
TX_STATUS_ENTRY(NEXT_FRAG);
2349
TX_STATUS_ENTRY(LIFE_EXPIRE);
2350
TX_STATUS_ENTRY(DEST_PS);
2351
TX_STATUS_ENTRY(ABORTED);
2352
TX_STATUS_ENTRY(BT_RETRY);
2353
TX_STATUS_ENTRY(STA_INVALID);
2354
TX_STATUS_ENTRY(FRAG_DROPPED);
2355
TX_STATUS_ENTRY(TID_DISABLE);
2356
TX_STATUS_ENTRY(FRAME_FLUSHED);
2357
TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
2358
TX_STATUS_ENTRY(TX_LOCKED);
2359
TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
2360
}
2361
2362
return "UNKNOWN";
2363
}
2364
2365
/**
2366
* iwl4965_scan_cancel - Cancel any currently executing HW scan
2367
*
2368
* NOTE: priv->mutex is not required before calling this function
2369
*/
2370
static int iwl4965_scan_cancel(struct iwl4965_priv *priv)
2371
{
2372
if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
2373
clear_bit(STATUS_SCANNING, &priv->status);
2374
return 0;
2375
}
2376
2377
if (test_bit(STATUS_SCANNING, &priv->status)) {
2378
if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2379
IWL_DEBUG_SCAN("Queuing scan abort.\n");
2380
set_bit(STATUS_SCAN_ABORTING, &priv->status);
2381
queue_work(priv->workqueue, &priv->abort_scan);
2382
2383
} else
2384
IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2385
2386
return test_bit(STATUS_SCANNING, &priv->status);
2387
}
2388
2389
return 0;
2390
}
2391
2392
/**
2393
* iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
2394
* @ms: amount of time to wait (in milliseconds) for scan to abort
2395
*
2396
* NOTE: priv->mutex must be held before calling this function
2397
*/
2398
static int iwl4965_scan_cancel_timeout(struct iwl4965_priv *priv, unsigned long ms)
2399
{
2400
unsigned long now = jiffies;
2401
int ret;
2402
2403
ret = iwl4965_scan_cancel(priv);
2404
if (ret && ms) {
2405
mutex_unlock(&priv->mutex);
2406
while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
2407
test_bit(STATUS_SCANNING, &priv->status))
2408
msleep(1);
2409
mutex_lock(&priv->mutex);
2410
2411
return test_bit(STATUS_SCANNING, &priv->status);
2412
}
2413
2414
return ret;
2415
}
2416
2417
static void iwl4965_sequence_reset(struct iwl4965_priv *priv)
2418
{
2419
/* Reset ieee stats */
2420
2421
/* We don't reset the net_device_stats (ieee->stats) on
2422
* re-association */
2423
2424
priv->last_seq_num = -1;
2425
priv->last_frag_num = -1;
2426
priv->last_packet_time = 0;
2427
2428
iwl4965_scan_cancel(priv);
2429
}
2430
2431
#define MAX_UCODE_BEACON_INTERVAL 4096
2432
#define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
2433
2434
static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
2435
{
2436
u16 new_val = 0;
2437
u16 beacon_factor = 0;
2438
2439
beacon_factor =
2440
(beacon_val + MAX_UCODE_BEACON_INTERVAL)
2441
/ MAX_UCODE_BEACON_INTERVAL;
2442
new_val = beacon_val / beacon_factor;
2443
2444
return cpu_to_le16(new_val);
2445
}
2446
2447
static void iwl4965_setup_rxon_timing(struct iwl4965_priv *priv)
2448
{
2449
u64 interval_tm_unit;
2450
u64 tsf, result;
2451
unsigned long flags;
2452
struct ieee80211_conf *conf = NULL;
2453
u16 beacon_int = 0;
2454
2455
conf = ieee80211_get_hw_conf(priv->hw);
2456
2457
spin_lock_irqsave(&priv->lock, flags);
2458
priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
2459
priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);
2460
2461
priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
2462
2463
tsf = priv->timestamp1;
2464
tsf = ((tsf << 32) | priv->timestamp0);
2465
2466
beacon_int = priv->beacon_int;
2467
spin_unlock_irqrestore(&priv->lock, flags);
2468
2469
if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
2470
if (beacon_int == 0) {
2471
priv->rxon_timing.beacon_interval = cpu_to_le16(100);
2472
priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
2473
} else {
2474
priv->rxon_timing.beacon_interval =
2475
cpu_to_le16(beacon_int);
2476
priv->rxon_timing.beacon_interval =
2477
iwl4965_adjust_beacon_interval(
2478
le16_to_cpu(priv->rxon_timing.beacon_interval));
2479
}
2480
2481
priv->rxon_timing.atim_window = 0;
2482
} else {
2483
priv->rxon_timing.beacon_interval =
2484
iwl4965_adjust_beacon_interval(conf->beacon_int);
2485
/* TODO: we need to get atim_window from upper stack
2486
* for now we set to 0 */
2487
priv->rxon_timing.atim_window = 0;
2488
}
2489
2490
interval_tm_unit =
2491
(le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2492
result = do_div(tsf, interval_tm_unit);
2493
priv->rxon_timing.beacon_init_val =
2494
cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2495
2496
IWL_DEBUG_ASSOC
2497
("beacon interval %d beacon timer %d beacon tim %d\n",
2498
le16_to_cpu(priv->rxon_timing.beacon_interval),
2499
le32_to_cpu(priv->rxon_timing.beacon_init_val),
2500
le16_to_cpu(priv->rxon_timing.atim_window));
2501
}
2502
2503
static int iwl4965_scan_initiate(struct iwl4965_priv *priv)
2504
{
2505
if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2506
IWL_ERROR("APs don't scan.\n");
2507
return 0;
2508
}
2509
2510
if (!iwl4965_is_ready_rf(priv)) {
2511
IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2512
return -EIO;
2513
}
2514
2515
if (test_bit(STATUS_SCANNING, &priv->status)) {
2516
IWL_DEBUG_SCAN("Scan already in progress.\n");
2517
return -EAGAIN;
2518
}
2519
2520
if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2521
IWL_DEBUG_SCAN("Scan request while abort pending. "
2522
"Queuing.\n");
2523
return -EAGAIN;
2524
}
2525
2526
IWL_DEBUG_INFO("Starting scan...\n");
2527
priv->scan_bands = 2;
2528
set_bit(STATUS_SCANNING, &priv->status);
2529
priv->scan_start = jiffies;
2530
priv->scan_pass_start = priv->scan_start;
2531
2532
queue_work(priv->workqueue, &priv->request_scan);
2533
2534
return 0;
2535
}
2536
2537
static int iwl4965_set_rxon_hwcrypto(struct iwl4965_priv *priv, int hw_decrypt)
2538
{
2539
struct iwl4965_rxon_cmd *rxon = &priv->staging_rxon;
2540
2541
if (hw_decrypt)
2542
rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2543
else
2544
rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2545
2546
return 0;
2547
}
2548
2549
static void iwl4965_set_flags_for_phymode(struct iwl4965_priv *priv, u8 phymode)
2550
{
2551
if (phymode == MODE_IEEE80211A) {
2552
priv->staging_rxon.flags &=
2553
~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2554
| RXON_FLG_CCK_MSK);
2555
priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2556
} else {
2557
/* Copied from iwl4965_bg_post_associate() */
2558
if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2559
priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2560
else
2561
priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2562
2563
if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2564
priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2565
2566
priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2567
priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2568
priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2569
}
2570
}
2571
2572
/*
2573
* initialize rxon structure with default values from eeprom
2574
*/
2575
static void iwl4965_connection_init_rx_config(struct iwl4965_priv *priv)
2576
{
2577
const struct iwl4965_channel_info *ch_info;
2578
2579
memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2580
2581
switch (priv->iw_mode) {
2582
case IEEE80211_IF_TYPE_AP:
2583
priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2584
break;
2585
2586
case IEEE80211_IF_TYPE_STA:
2587
priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2588
priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2589
break;
2590
2591
case IEEE80211_IF_TYPE_IBSS:
2592
priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2593
priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2594
priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2595
RXON_FILTER_ACCEPT_GRP_MSK;
2596
break;
2597
2598
case IEEE80211_IF_TYPE_MNTR:
2599
priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2600
priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2601
RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2602
break;
2603
}
2604
2605
#if 0
2606
/* TODO: Figure out when short_preamble would be set and cache from
2607
* that */
2608
if (!hw_to_local(priv->hw)->short_preamble)
2609
priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2610
else
2611
priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2612
#endif
2613
2614
ch_info = iwl4965_get_channel_info(priv, priv->phymode,
2615
le16_to_cpu(priv->staging_rxon.channel));
2616
2617
if (!ch_info)
2618
ch_info = &priv->channel_info[0];
2619
2620
/*
2621
* in some case A channels are all non IBSS
2622
* in this case force B/G channel
2623
*/
2624
if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
2625
!(is_channel_ibss(ch_info)))
2626
ch_info = &priv->channel_info[0];
2627
2628
priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2629
if (is_channel_a_band(ch_info))
2630
priv->phymode = MODE_IEEE80211A;
2631
else
2632
priv->phymode = MODE_IEEE80211G;
2633
2634
iwl4965_set_flags_for_phymode(priv, priv->phymode);
2635
2636
priv->staging_rxon.ofdm_basic_rates =
2637
(IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2638
priv->staging_rxon.cck_basic_rates =
2639
(IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2640
2641
priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
2642
RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
2643
memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2644
memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
2645
priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
2646
priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
2647
iwl4965_set_rxon_chain(priv);
2648
}
2649
2650
static int iwl4965_set_mode(struct iwl4965_priv *priv, int mode)
2651
{
2652
if (mode == IEEE80211_IF_TYPE_IBSS) {
2653
const struct iwl4965_channel_info *ch_info;
2654
2655
ch_info = iwl4965_get_channel_info(priv,
2656
priv->phymode,
2657
le16_to_cpu(priv->staging_rxon.channel));
2658
2659
if (!ch_info || !is_channel_ibss(ch_info)) {
2660
IWL_ERROR("channel %d not IBSS channel\n",
2661
le16_to_cpu(priv->staging_rxon.channel));
2662
return -EINVAL;
2663
}
2664
}
2665
2666
priv->iw_mode = mode;
2667
2668
iwl4965_connection_init_rx_config(priv);
2669
memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2670
2671
iwl4965_clear_stations_table(priv);
2672
2673
/* dont commit rxon if rf-kill is on*/
2674
if (!iwl4965_is_ready_rf(priv))
2675
return -EAGAIN;
2676
2677
cancel_delayed_work(&priv->scan_check);
2678
if (iwl4965_scan_cancel_timeout(priv, 100)) {
2679
IWL_WARNING("Aborted scan still in progress after 100ms\n");
2680
IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2681
return -EAGAIN;
2682
}
2683
2684
iwl4965_commit_rxon(priv);
2685
2686
return 0;
2687
}
2688
2689
static void iwl4965_build_tx_cmd_hwcrypto(struct iwl4965_priv *priv,
2690
struct ieee80211_tx_control *ctl,
2691
struct iwl4965_cmd *cmd,
2692
struct sk_buff *skb_frag,
2693
int last_frag)
2694
{
2695
struct iwl4965_hw_key *keyinfo = &priv->stations[ctl->key_idx].keyinfo;
2696
2697
switch (keyinfo->alg) {
2698
case ALG_CCMP:
2699
cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2700
memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2701
IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2702
break;
2703
2704
case ALG_TKIP:
2705
#if 0
2706
cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2707
2708
if (last_frag)
2709
memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2710
8);
2711
else
2712
memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2713
#endif
2714
break;
2715
2716
case ALG_WEP:
2717
cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2718
(ctl->key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2719
2720
if (keyinfo->keylen == 13)
2721
cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2722
2723
memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2724
2725
IWL_DEBUG_TX("Configuring packet for WEP encryption "
2726
"with key %d\n", ctl->key_idx);
2727
break;
2728
2729
case ALG_NONE:
2730
IWL_DEBUG_TX("Tx packet in the clear (encrypt requested).\n");
2731
break;
2732
2733
default:
2734
printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2735
break;
2736
}
2737
}
2738
2739
/*
2740
* handle build REPLY_TX command notification.
2741
*/
2742
static void iwl4965_build_tx_cmd_basic(struct iwl4965_priv *priv,
2743
struct iwl4965_cmd *cmd,
2744
struct ieee80211_tx_control *ctrl,
2745
struct ieee80211_hdr *hdr,
2746
int is_unicast, u8 std_id)
2747
{
2748
__le16 *qc;
2749
u16 fc = le16_to_cpu(hdr->frame_control);
2750
__le32 tx_flags = cmd->cmd.tx.tx_flags;
2751
2752
cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2753
if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
2754
tx_flags |= TX_CMD_FLG_ACK_MSK;
2755
if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
2756
tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2757
if (ieee80211_is_probe_response(fc) &&
2758
!(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2759
tx_flags |= TX_CMD_FLG_TSF_MSK;
2760
} else {
2761
tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2762
tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2763
}
2764
2765
if (ieee80211_is_back_request(fc))
2766
tx_flags |= TX_CMD_FLG_ACK_MSK | TX_CMD_FLG_IMM_BA_RSP_MASK;
2767
2768
2769
cmd->cmd.tx.sta_id = std_id;
2770
if (ieee80211_get_morefrag(hdr))
2771
tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2772
2773
qc = ieee80211_get_qos_ctrl(hdr);
2774
if (qc) {
2775
cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
2776
tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2777
} else
2778
tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2779
2780
if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
2781
tx_flags |= TX_CMD_FLG_RTS_MSK;
2782
tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2783
} else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
2784
tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2785
tx_flags |= TX_CMD_FLG_CTS_MSK;
2786
}
2787
2788
if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2789
tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2790
2791
tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2792
if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
2793
if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
2794
(fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
2795
cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2796
else
2797
cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2798
} else
2799
cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2800
2801
cmd->cmd.tx.driver_txop = 0;
2802
cmd->cmd.tx.tx_flags = tx_flags;
2803
cmd->cmd.tx.next_frame_len = 0;
2804
}
2805
2806
/**
2807
* iwl4965_get_sta_id - Find station's index within station table
2808
*
2809
* If new IBSS station, create new entry in station table
2810
*/
2811
static int iwl4965_get_sta_id(struct iwl4965_priv *priv,
2812
struct ieee80211_hdr *hdr)
2813
{
2814
int sta_id;
2815
u16 fc = le16_to_cpu(hdr->frame_control);
2816
2817
/* If this frame is broadcast or management, use broadcast station id */
2818
if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2819
is_multicast_ether_addr(hdr->addr1))
2820
return priv->hw_setting.bcast_sta_id;
2821
2822
switch (priv->iw_mode) {
2823
2824
/* If we are a client station in a BSS network, use the special
2825
* AP station entry (that's the only station we communicate with) */
2826
case IEEE80211_IF_TYPE_STA:
2827
return IWL_AP_ID;
2828
2829
/* If we are an AP, then find the station, or use BCAST */
2830
case IEEE80211_IF_TYPE_AP:
2831
sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2832
if (sta_id != IWL_INVALID_STATION)
2833
return sta_id;
2834
return priv->hw_setting.bcast_sta_id;
2835
2836
/* If this frame is going out to an IBSS network, find the station,
2837
* or create a new station table entry */
2838
case IEEE80211_IF_TYPE_IBSS:
2839
sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2840
if (sta_id != IWL_INVALID_STATION)
2841
return sta_id;
2842
2843
/* Create new station table entry */
2844
sta_id = iwl4965_add_station_flags(priv, hdr->addr1, 0, CMD_ASYNC);
2845
2846
if (sta_id != IWL_INVALID_STATION)
2847
return sta_id;
2848
2849
IWL_DEBUG_DROP("Station " MAC_FMT " not in station map. "
2850
"Defaulting to broadcast...\n",
2851
MAC_ARG(hdr->addr1));
2852
iwl4965_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2853
return priv->hw_setting.bcast_sta_id;
2854
2855
default:
2856
IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
2857
return priv->hw_setting.bcast_sta_id;
2858
}
2859
}
2860
2861
/*
2862
* start REPLY_TX command process
2863
*/
2864
static int iwl4965_tx_skb(struct iwl4965_priv *priv,
2865
struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2866
{
2867
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2868
struct iwl4965_tfd_frame *tfd;
2869
u32 *control_flags;
2870
int txq_id = ctl->queue;
2871
struct iwl4965_tx_queue *txq = NULL;
2872
struct iwl4965_queue *q = NULL;
2873
dma_addr_t phys_addr;
2874
dma_addr_t txcmd_phys;
2875
dma_addr_t scratch_phys;
2876
struct iwl4965_cmd *out_cmd = NULL;
2877
u16 len, idx, len_org;
2878
u8 id, hdr_len, unicast;
2879
u8 sta_id;
2880
u16 seq_number = 0;
2881
u16 fc;
2882
__le16 *qc;
2883
u8 wait_write_ptr = 0;
2884
unsigned long flags;
2885
int rc;
2886
2887
spin_lock_irqsave(&priv->lock, flags);
2888
if (iwl4965_is_rfkill(priv)) {
2889
IWL_DEBUG_DROP("Dropping - RF KILL\n");
2890
goto drop_unlock;
2891
}
2892
2893
if (!priv->interface_id) {
2894
IWL_DEBUG_DROP("Dropping - !priv->interface_id\n");
2895
goto drop_unlock;
2896
}
2897
2898
if ((ctl->tx_rate & 0xFF) == IWL_INVALID_RATE) {
2899
IWL_ERROR("ERROR: No TX rate available.\n");
2900
goto drop_unlock;
2901
}
2902
2903
unicast = !is_multicast_ether_addr(hdr->addr1);
2904
id = 0;
2905
2906
fc = le16_to_cpu(hdr->frame_control);
2907
2908
#ifdef CONFIG_IWL4965_DEBUG
2909
if (ieee80211_is_auth(fc))
2910
IWL_DEBUG_TX("Sending AUTH frame\n");
2911
else if (ieee80211_is_assoc_request(fc))
2912
IWL_DEBUG_TX("Sending ASSOC frame\n");
2913
else if (ieee80211_is_reassoc_request(fc))
2914
IWL_DEBUG_TX("Sending REASSOC frame\n");
2915
#endif
2916
2917
/* drop all data frame if we are not associated */
2918
if (!iwl4965_is_associated(priv) && !priv->assoc_id &&
2919
((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)) {
2920
IWL_DEBUG_DROP("Dropping - !iwl4965_is_associated\n");
2921
goto drop_unlock;
2922
}
2923
2924
spin_unlock_irqrestore(&priv->lock, flags);
2925
2926
hdr_len = iwlwifi_ieee80211_get_hdrlen(fc);
2927
2928
/* Find (or create) index into station table for destination station */
2929
sta_id = iwl4965_get_sta_id(priv, hdr);
2930
if (sta_id == IWL_INVALID_STATION) {
2931
IWL_DEBUG_DROP("Dropping - INVALID STATION: " MAC_FMT "\n",
2932
MAC_ARG(hdr->addr1));
2933
goto drop;
2934
}
2935
2936
IWL_DEBUG_RATE("station Id %d\n", sta_id);
2937
2938
qc = ieee80211_get_qos_ctrl(hdr);
2939
if (qc) {
2940
u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2941
seq_number = priv->stations[sta_id].tid[tid].seq_number &
2942
IEEE80211_SCTL_SEQ;
2943
hdr->seq_ctrl = cpu_to_le16(seq_number) |
2944
(hdr->seq_ctrl &
2945
__constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2946
seq_number += 0x10;
2947
#ifdef CONFIG_IWL4965_HT
2948
#ifdef CONFIG_IWL4965_HT_AGG
2949
/* aggregation is on for this <sta,tid> */
2950
if (ctl->flags & IEEE80211_TXCTL_HT_MPDU_AGG)
2951
txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
2952
#endif /* CONFIG_IWL4965_HT_AGG */
2953
#endif /* CONFIG_IWL4965_HT */
2954
}
2955
2956
/* Descriptor for chosen Tx queue */
2957
txq = &priv->txq[txq_id];
2958
q = &txq->q;
2959
2960
spin_lock_irqsave(&priv->lock, flags);
2961
2962
/* Set up first empty TFD within this queue's circular TFD buffer */
2963
tfd = &txq->bd[q->write_ptr];
2964
memset(tfd, 0, sizeof(*tfd));
2965
control_flags = (u32 *) tfd;
2966
idx = get_cmd_index(q, q->write_ptr, 0);
2967
2968
/* Set up driver data for this TFD */
2969
memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl4965_tx_info));
2970
txq->txb[q->write_ptr].skb[0] = skb;
2971
memcpy(&(txq->txb[q->write_ptr].status.control),
2972
ctl, sizeof(struct ieee80211_tx_control));
2973
2974
/* Set up first empty entry in queue's array of Tx/cmd buffers */
2975
out_cmd = &txq->cmd[idx];
2976
memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2977
memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2978
2979
/*
2980
* Set up the Tx-command (not MAC!) header.
2981
* Store the chosen Tx queue and TFD index within the sequence field;
2982
* after Tx, uCode's Tx response will return this value so driver can
2983
* locate the frame within the tx queue and do post-tx processing.
2984
*/
2985
out_cmd->hdr.cmd = REPLY_TX;
2986
out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2987
INDEX_TO_SEQ(q->write_ptr)));
2988
2989
/* Copy MAC header from skb into command buffer */
2990
memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2991
2992
/*
2993
* Use the first empty entry in this queue's command buffer array
2994
* to contain the Tx command and MAC header concatenated together
2995
* (payload data will be in another buffer).
2996
* Size of this varies, due to varying MAC header length.
2997
* If end is not dword aligned, we'll have 2 extra bytes at the end
2998
* of the MAC header (device reads on dword boundaries).
2999
* We'll tell device about this padding later.
3000
*/
3001
len = priv->hw_setting.tx_cmd_len +
3002
sizeof(struct iwl4965_cmd_header) + hdr_len;
3003
3004
len_org = len;
3005
len = (len + 3) & ~3;
3006
3007
if (len_org != len)
3008
len_org = 1;
3009
else
3010
len_org = 0;
3011
3012
/* Physical address of this Tx command's header (not MAC header!),
3013
* within command buffer array. */
3014
txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl4965_cmd) * idx +
3015
offsetof(struct iwl4965_cmd, hdr);
3016
3017
/* Add buffer containing Tx command and MAC(!) header to TFD's
3018
* first entry */
3019
iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
3020
3021
if (ctl->key_idx != -1)
3022
iwl4965_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, 0);
3023
3024
/* Set up TFD's 2nd entry to point directly to remainder of skb,
3025
* if any (802.11 null frames have no payload). */
3026
len = skb->len - hdr_len;
3027
if (len) {
3028
phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
3029
len, PCI_DMA_TODEVICE);
3030
iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
3031
}
3032
3033
/* Tell 4965 about any 2-byte padding after MAC header */
3034
if (len_org)
3035
out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
3036
3037
/* Total # bytes to be transmitted */
3038
len = (u16)skb->len;
3039
out_cmd->cmd.tx.len = cpu_to_le16(len);
3040
3041
/* TODO need this for burst mode later on */
3042
iwl4965_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
3043
3044
/* set is_hcca to 0; it probably will never be implemented */
3045
iwl4965_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
3046
3047
scratch_phys = txcmd_phys + sizeof(struct iwl4965_cmd_header) +
3048
offsetof(struct iwl4965_tx_cmd, scratch);
3049
out_cmd->cmd.tx.dram_lsb_ptr = cpu_to_le32(scratch_phys);
3050
out_cmd->cmd.tx.dram_msb_ptr = iwl_get_dma_hi_address(scratch_phys);
3051
3052
#ifdef CONFIG_IWL4965_HT_AGG
3053
#ifdef CONFIG_IWL4965_HT
3054
/* TODO: move this functionality to rate scaling */
3055
iwl4965_tl_get_stats(priv, hdr);
3056
#endif /* CONFIG_IWL4965_HT_AGG */
3057
#endif /*CONFIG_IWL4965_HT */
3058
3059
3060
if (!ieee80211_get_morefrag(hdr)) {
3061
txq->need_update = 1;
3062
if (qc) {
3063
u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
3064
priv->stations[sta_id].tid[tid].seq_number = seq_number;
3065
}
3066
} else {
3067
wait_write_ptr = 1;
3068
txq->need_update = 0;
3069
}
3070
3071
iwl4965_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
3072
sizeof(out_cmd->cmd.tx));
3073
3074
iwl4965_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
3075
iwlwifi_ieee80211_get_hdrlen(fc));
3076
3077
/* Set up entry for this TFD in Tx byte-count array */
3078
iwl4965_tx_queue_update_wr_ptr(priv, txq, len);
3079
3080
/* Tell device the write index *just past* this latest filled TFD */
3081
q->write_ptr = iwl4965_queue_inc_wrap(q->write_ptr, q->n_bd);
3082
rc = iwl4965_tx_queue_update_write_ptr(priv, txq);
3083
spin_unlock_irqrestore(&priv->lock, flags);
3084
3085
if (rc)
3086
return rc;
3087
3088
if ((iwl4965_queue_space(q) < q->high_mark)
3089
&& priv->mac80211_registered) {
3090
if (wait_write_ptr) {
3091
spin_lock_irqsave(&priv->lock, flags);
3092
txq->need_update = 1;
3093
iwl4965_tx_queue_update_write_ptr(priv, txq);
3094
spin_unlock_irqrestore(&priv->lock, flags);
3095
}
3096
3097
iwlwifi_ieee80211_stop_queue(priv->hw, ctl->queue);
3098
}
3099
3100
return 0;
3101
3102
drop_unlock:
3103
spin_unlock_irqrestore(&priv->lock, flags);
3104
drop:
3105
return -1;
3106
}
3107
3108
static void iwl4965_set_rate(struct iwl4965_priv *priv)
3109
{
3110
const struct ieee80211_hw_mode *hw = NULL;
3111
struct ieee80211_rate *rate;
3112
int i;
3113
3114
hw = iwl4965_get_hw_mode(priv, priv->phymode);
3115
if (!hw) {
3116
IWL_ERROR("Failed to set rate: unable to get hw mode\n");
3117
return;
3118
}
3119
3120
priv->active_rate = 0;
3121
priv->active_rate_basic = 0;
3122
3123
IWL_DEBUG_RATE("Setting rates for 802.11%c\n",
3124
hw->mode == MODE_IEEE80211A ?
3125
'a' : ((hw->mode == MODE_IEEE80211B) ? 'b' : 'g'));
3126
3127
for (i = 0; i < hw->num_rates; i++) {
3128
rate = &(hw->rates[i]);
3129
if ((rate->val < IWL_RATE_COUNT) &&
3130
(rate->flags & IEEE80211_RATE_SUPPORTED)) {
3131
IWL_DEBUG_RATE("Adding rate index %d (plcp %d)%s\n",
3132
rate->val, iwl4965_rates[rate->val].plcp,
3133
(rate->flags & IEEE80211_RATE_BASIC) ?
3134
"*" : "");
3135
priv->active_rate |= (1 << rate->val);
3136
if (rate->flags & IEEE80211_RATE_BASIC)
3137
priv->active_rate_basic |= (1 << rate->val);
3138
} else
3139
IWL_DEBUG_RATE("Not adding rate %d (plcp %d)\n",
3140
rate->val, iwl4965_rates[rate->val].plcp);
3141
}
3142
3143
IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
3144
priv->active_rate, priv->active_rate_basic);
3145
3146
/*
3147
* If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
3148
* otherwise set it to the default of all CCK rates and 6, 12, 24 for
3149
* OFDM
3150
*/
3151
if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
3152
priv->staging_rxon.cck_basic_rates =
3153
((priv->active_rate_basic &
3154
IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
3155
else
3156
priv->staging_rxon.cck_basic_rates =
3157
(IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
3158
3159
if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
3160
priv->staging_rxon.ofdm_basic_rates =
3161
((priv->active_rate_basic &
3162
(IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
3163
IWL_FIRST_OFDM_RATE) & 0xFF;
3164
else
3165
priv->staging_rxon.ofdm_basic_rates =
3166
(IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
3167
}
3168
3169
static void iwl4965_radio_kill_sw(struct iwl4965_priv *priv, int disable_radio)
3170
{
3171
unsigned long flags;
3172
3173
if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
3174
return;
3175
3176
IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
3177
disable_radio ? "OFF" : "ON");
3178
3179
if (disable_radio) {
3180
iwl4965_scan_cancel(priv);
3181
/* FIXME: This is a workaround for AP */
3182
if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3183
spin_lock_irqsave(&priv->lock, flags);
3184
iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
3185
CSR_UCODE_SW_BIT_RFKILL);
3186
spin_unlock_irqrestore(&priv->lock, flags);
3187
iwl4965_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
3188
set_bit(STATUS_RF_KILL_SW, &priv->status);
3189
}
3190
return;
3191
}
3192
3193
spin_lock_irqsave(&priv->lock, flags);
3194
iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3195
3196
clear_bit(STATUS_RF_KILL_SW, &priv->status);
3197
spin_unlock_irqrestore(&priv->lock, flags);
3198
3199
/* wake up ucode */
3200
msleep(10);
3201
3202
spin_lock_irqsave(&priv->lock, flags);
3203
iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
3204
if (!iwl4965_grab_nic_access(priv))
3205
iwl4965_release_nic_access(priv);
3206
spin_unlock_irqrestore(&priv->lock, flags);
3207
3208
if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
3209
IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3210
"disabled by HW switch\n");
3211
return;
3212
}
3213
3214
queue_work(priv->workqueue, &priv->restart);
3215
return;
3216
}
3217
3218
void iwl4965_set_decrypted_flag(struct iwl4965_priv *priv, struct sk_buff *skb,
3219
u32 decrypt_res, struct ieee80211_rx_status *stats)
3220
{
3221
u16 fc =
3222
le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
3223
3224
if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
3225
return;
3226
3227
if (!(fc & IEEE80211_FCTL_PROTECTED))
3228
return;
3229
3230
IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
3231
switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
3232
case RX_RES_STATUS_SEC_TYPE_TKIP:
3233
if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3234
RX_RES_STATUS_BAD_ICV_MIC)
3235
stats->flag |= RX_FLAG_MMIC_ERROR;
3236
case RX_RES_STATUS_SEC_TYPE_WEP:
3237
case RX_RES_STATUS_SEC_TYPE_CCMP:
3238
if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3239
RX_RES_STATUS_DECRYPT_OK) {
3240
IWL_DEBUG_RX("hw decrypt successfully!!!\n");
3241
stats->flag |= RX_FLAG_DECRYPTED;
3242
}
3243
break;
3244
3245
default:
3246
break;
3247
}
3248
}
3249
3250
void iwl4965_handle_data_packet_monitor(struct iwl4965_priv *priv,
3251
struct iwl4965_rx_mem_buffer *rxb,
3252
void *data, short len,
3253
struct ieee80211_rx_status *stats,
3254
u16 phy_flags)
3255
{
3256
struct iwl4965_rt_rx_hdr *iwl4965_rt;
3257
3258
/* First cache any information we need before we overwrite
3259
* the information provided in the skb from the hardware */
3260
s8 signal = stats->ssi;
3261
s8 noise = 0;
3262
int rate = stats->rate;
3263
u64 tsf = stats->mactime;
3264
__le16 phy_flags_hw = cpu_to_le16(phy_flags);
3265
3266
/* We received data from the HW, so stop the watchdog */
3267
if (len > IWL_RX_BUF_SIZE - sizeof(*iwl4965_rt)) {
3268
IWL_DEBUG_DROP("Dropping too large packet in monitor\n");
3269
return;
3270
}
3271
3272
/* copy the frame data to write after where the radiotap header goes */
3273
iwl4965_rt = (void *)rxb->skb->data;
3274
memmove(iwl4965_rt->payload, data, len);
3275
3276
iwl4965_rt->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION;
3277
iwl4965_rt->rt_hdr.it_pad = 0; /* always good to zero */
3278
3279
/* total header + data */
3280
iwl4965_rt->rt_hdr.it_len = cpu_to_le16(sizeof(*iwl4965_rt));
3281
3282
/* Set the size of the skb to the size of the frame */
3283
skb_put(rxb->skb, sizeof(*iwl4965_rt) + len);
3284
3285
/* Big bitfield of all the fields we provide in radiotap */
3286
iwl4965_rt->rt_hdr.it_present =
3287
cpu_to_le32((1 << IEEE80211_RADIOTAP_TSFT) |
3288
(1 << IEEE80211_RADIOTAP_FLAGS) |
3289
(1 << IEEE80211_RADIOTAP_RATE) |
3290
(1 << IEEE80211_RADIOTAP_CHANNEL) |
3291
(1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL) |
3292
(1 << IEEE80211_RADIOTAP_DBM_ANTNOISE) |
3293
(1 << IEEE80211_RADIOTAP_ANTENNA));
3294
3295
/* Zero the flags, we'll add to them as we go */
3296
iwl4965_rt->rt_flags = 0;
3297
3298
iwl4965_rt->rt_tsf = cpu_to_le64(tsf);
3299
3300
/* Convert to dBm */
3301
iwl4965_rt->rt_dbmsignal = signal;
3302
iwl4965_rt->rt_dbmnoise = noise;
3303
3304
/* Convert the channel frequency and set the flags */
3305
iwl4965_rt->rt_channelMHz = cpu_to_le16(stats->freq);
3306
if (!(phy_flags_hw & RX_RES_PHY_FLAGS_BAND_24_MSK))
3307
iwl4965_rt->rt_chbitmask =
3308
cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_5GHZ));
3309
else if (phy_flags_hw & RX_RES_PHY_FLAGS_MOD_CCK_MSK)
3310
iwl4965_rt->rt_chbitmask =
3311
cpu_to_le16((IEEE80211_CHAN_CCK | IEEE80211_CHAN_2GHZ));
3312
else /* 802.11g */
3313
iwl4965_rt->rt_chbitmask =
3314
cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_2GHZ));
3315
3316
rate = iwl4965_rate_index_from_plcp(rate);
3317
if (rate == -1)
3318
iwl4965_rt->rt_rate = 0;
3319
else
3320
iwl4965_rt->rt_rate = iwl4965_rates[rate].ieee;
3321
3322
/* antenna number */
3323
iwl4965_rt->rt_antenna =
3324
le16_to_cpu(phy_flags_hw & RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4;
3325
3326
/* set the preamble flag if we have it */
3327
if (phy_flags_hw & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
3328
iwl4965_rt->rt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3329
3330
IWL_DEBUG_RX("Rx packet of %d bytes.\n", rxb->skb->len);
3331
3332
stats->flag |= RX_FLAG_RADIOTAP;
3333
iwlwifi_ieee80211_rx_irqsafe(priv->hw, rxb->skb, stats);
3334
rxb->skb = NULL;
3335
}
3336
3337
3338
#define IWL_PACKET_RETRY_TIME HZ
3339
3340
int iwl4965_is_duplicate_packet(struct iwl4965_priv *priv, struct ieee80211_hdr *header)
3341
{
3342
u16 sc = le16_to_cpu(header->seq_ctrl);
3343
u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
3344
u16 frag = sc & IEEE80211_SCTL_FRAG;
3345
u16 *last_seq, *last_frag;
3346
unsigned long *last_time;
3347
3348
switch (priv->iw_mode) {
3349
case IEEE80211_IF_TYPE_IBSS:{
3350
struct list_head *p;
3351
struct iwl4965_ibss_seq *entry = NULL;
3352
u8 *mac = header->addr2;
3353
int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
3354
3355
__list_for_each(p, &priv->ibss_mac_hash[index]) {
3356
entry = list_entry(p, struct iwl4965_ibss_seq, list);
3357
if (!compare_ether_addr(entry->mac, mac))
3358
break;
3359
}
3360
if (p == &priv->ibss_mac_hash[index]) {
3361
entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
3362
if (!entry) {
3363
IWL_ERROR("Cannot malloc new mac entry\n");
3364
return 0;
3365
}
3366
memcpy(entry->mac, mac, ETH_ALEN);
3367
entry->seq_num = seq;
3368
entry->frag_num = frag;
3369
entry->packet_time = jiffies;
3370
list_add(&entry->list, &priv->ibss_mac_hash[index]);
3371
return 0;
3372
}
3373
last_seq = &entry->seq_num;
3374
last_frag = &entry->frag_num;
3375
last_time = &entry->packet_time;
3376
break;
3377
}
3378
case IEEE80211_IF_TYPE_STA:
3379
last_seq = &priv->last_seq_num;
3380
last_frag = &priv->last_frag_num;
3381
last_time = &priv->last_packet_time;
3382
break;
3383
default:
3384
return 0;
3385
}
3386
if ((*last_seq == seq) &&
3387
time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
3388
if (*last_frag == frag)
3389
goto drop;
3390
if (*last_frag + 1 != frag)
3391
/* out-of-order fragment */
3392
goto drop;
3393
} else
3394
*last_seq = seq;
3395
3396
*last_frag = frag;
3397
*last_time = jiffies;
3398
return 0;
3399
3400
drop:
3401
return 1;
3402
}
3403
3404
#ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3405
3406
#include "iwl-spectrum.h"
3407
3408
#define BEACON_TIME_MASK_LOW 0x00FFFFFF
3409
#define BEACON_TIME_MASK_HIGH 0xFF000000
3410
#define TIME_UNIT 1024
3411
3412
/*
3413
* extended beacon time format
3414
* time in usec will be changed into a 32-bit value in 8:24 format
3415
* the high 1 byte is the beacon counts
3416
* the lower 3 bytes is the time in usec within one beacon interval
3417
*/
3418
3419
static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
3420
{
3421
u32 quot;
3422
u32 rem;
3423
u32 interval = beacon_interval * 1024;
3424
3425
if (!interval || !usec)
3426
return 0;
3427
3428
quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
3429
rem = (usec % interval) & BEACON_TIME_MASK_LOW;
3430
3431
return (quot << 24) + rem;
3432
}
3433
3434
/* base is usually what we get from ucode with each received frame,
3435
* the same as HW timer counter counting down
3436
*/
3437
3438
static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
3439
{
3440
u32 base_low = base & BEACON_TIME_MASK_LOW;
3441
u32 addon_low = addon & BEACON_TIME_MASK_LOW;
3442
u32 interval = beacon_interval * TIME_UNIT;
3443
u32 res = (base & BEACON_TIME_MASK_HIGH) +
3444
(addon & BEACON_TIME_MASK_HIGH);
3445
3446
if (base_low > addon_low)
3447
res += base_low - addon_low;
3448
else if (base_low < addon_low) {
3449
res += interval + base_low - addon_low;
3450
res += (1 << 24);
3451
} else
3452
res += (1 << 24);
3453
3454
return cpu_to_le32(res);
3455
}
3456
3457
static int iwl4965_get_measurement(struct iwl4965_priv *priv,
3458
struct ieee80211_measurement_params *params,
3459
u8 type)
3460
{
3461
struct iwl4965_spectrum_cmd spectrum;
3462
struct iwl4965_rx_packet *res;
3463
struct iwl4965_host_cmd cmd = {
3464
.id = REPLY_SPECTRUM_MEASUREMENT_CMD,
3465
.data = (void *)&spectrum,
3466
.meta.flags = CMD_WANT_SKB,
3467
};
3468
u32 add_time = le64_to_cpu(params->start_time);
3469
int rc;
3470
int spectrum_resp_status;
3471
int duration = le16_to_cpu(params->duration);
3472
3473
if (iwl4965_is_associated(priv))
3474
add_time =
3475
iwl4965_usecs_to_beacons(
3476
le64_to_cpu(params->start_time) - priv->last_tsf,
3477
le16_to_cpu(priv->rxon_timing.beacon_interval));
3478
3479
memset(&spectrum, 0, sizeof(spectrum));
3480
3481
spectrum.channel_count = cpu_to_le16(1);
3482
spectrum.flags =
3483
RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
3484
spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
3485
cmd.len = sizeof(spectrum);
3486
spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
3487
3488
if (iwl4965_is_associated(priv))
3489
spectrum.start_time =
3490
iwl4965_add_beacon_time(priv->last_beacon_time,
3491
add_time,
3492
le16_to_cpu(priv->rxon_timing.beacon_interval));
3493
else
3494
spectrum.start_time = 0;
3495
3496
spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
3497
spectrum.channels[0].channel = params->channel;
3498
spectrum.channels[0].type = type;
3499
if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
3500
spectrum.flags |= RXON_FLG_BAND_24G_MSK |
3501
RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
3502
3503
rc = iwl4965_send_cmd_sync(priv, &cmd);
3504
if (rc)
3505
return rc;
3506
3507
res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
3508
if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
3509
IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
3510
rc = -EIO;
3511
}
3512
3513
spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
3514
switch (spectrum_resp_status) {
3515
case 0: /* Command will be handled */
3516
if (res->u.spectrum.id != 0xff) {
3517
IWL_DEBUG_INFO
3518
("Replaced existing measurement: %d\n",
3519
res->u.spectrum.id);
3520
priv->measurement_status &= ~MEASUREMENT_READY;
3521
}
3522
priv->measurement_status |= MEASUREMENT_ACTIVE;
3523
rc = 0;
3524
break;
3525
3526
case 1: /* Command will not be handled */
3527
rc = -EAGAIN;
3528
break;
3529
}
3530
3531
dev_kfree_skb_any(cmd.meta.u.skb);
3532
3533
return rc;
3534
}
3535
#endif
3536
3537
static void iwl4965_txstatus_to_ieee(struct iwl4965_priv *priv,
3538
struct iwl4965_tx_info *tx_sta)
3539
{
3540
3541
tx_sta->status.ack_signal = 0;
3542
tx_sta->status.excessive_retries = 0;
3543
tx_sta->status.queue_length = 0;
3544
tx_sta->status.queue_number = 0;
3545
3546
if (in_interrupt())
3547
iwlwifi_iwlwifi_ieee80211_tx_status_irqsafe(priv->hw,
3548
tx_sta->skb[0], &(tx_sta->status));
3549
else
3550
iwlwifi_ieee80211_tx_status(priv->hw,
3551
tx_sta->skb[0], &(tx_sta->status));
3552
3553
tx_sta->skb[0] = NULL;
3554
}
3555
3556
/**
3557
* iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
3558
*
3559
* When FW advances 'R' index, all entries between old and new 'R' index
3560
* need to be reclaimed. As result, some free space forms. If there is
3561
* enough free space (> low mark), wake the stack that feeds us.
3562
*/
3563
int iwl4965_tx_queue_reclaim(struct iwl4965_priv *priv, int txq_id, int index)
3564
{
3565
struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
3566
struct iwl4965_queue *q = &txq->q;
3567
int nfreed = 0;
3568
3569
if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
3570
IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3571
"is out of range [0-%d] %d %d.\n", txq_id,
3572
index, q->n_bd, q->write_ptr, q->read_ptr);
3573
return 0;
3574
}
3575
3576
for (index = iwl4965_queue_inc_wrap(index, q->n_bd);
3577
q->read_ptr != index;
3578
q->read_ptr = iwl4965_queue_inc_wrap(q->read_ptr, q->n_bd)) {
3579
if (txq_id != IWL_CMD_QUEUE_NUM) {
3580
iwl4965_txstatus_to_ieee(priv,
3581
&(txq->txb[txq->q.read_ptr]));
3582
iwl4965_hw_txq_free_tfd(priv, txq);
3583
} else if (nfreed > 1) {
3584
IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
3585
q->write_ptr, q->read_ptr);
3586
queue_work(priv->workqueue, &priv->restart);
3587
}
3588
nfreed++;
3589
}
3590
3591
if (iwl4965_queue_space(q) > q->low_mark && (txq_id >= 0) &&
3592
(txq_id != IWL_CMD_QUEUE_NUM) &&
3593
priv->mac80211_registered)
3594
iwlwifi_ieee80211_wake_queue(priv->hw, txq_id);
3595
3596
3597
return nfreed;
3598
}
3599
3600
static int iwl4965_is_tx_success(u32 status)
3601
{
3602
status &= TX_STATUS_MSK;
3603
return (status == TX_STATUS_SUCCESS)
3604
|| (status == TX_STATUS_DIRECT_DONE);
3605
}
3606
3607
/******************************************************************************
3608
*
3609
* Generic RX handler implementations
3610
*
3611
******************************************************************************/
3612
#ifdef CONFIG_IWL4965_HT
3613
#ifdef CONFIG_IWL4965_HT_AGG
3614
3615
static inline int iwl4965_get_ra_sta_id(struct iwl4965_priv *priv,
3616
struct ieee80211_hdr *hdr)
3617
{
3618
if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
3619
return IWL_AP_ID;
3620
else {
3621
u8 *da = ieee80211_get_DA(hdr);
3622
return iwl4965_hw_find_station(priv, da);
3623
}
3624
}
3625
3626
static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
3627
struct iwl4965_priv *priv, int txq_id, int idx)
3628
{
3629
if (priv->txq[txq_id].txb[idx].skb[0])
3630
return (struct ieee80211_hdr *)priv->txq[txq_id].
3631
txb[idx].skb[0]->data;
3632
return NULL;
3633
}
3634
3635
static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
3636
{
3637
__le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
3638
tx_resp->frame_count);
3639
return le32_to_cpu(*scd_ssn) & MAX_SN;
3640
3641
}
3642
3643
/**
3644
* iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
3645
*/
3646
static int iwl4965_tx_status_reply_tx(struct iwl4965_priv *priv,
3647
struct iwl4965_ht_agg *agg,
3648
struct iwl4965_tx_resp *tx_resp,
3649
u16 start_idx)
3650
{
3651
u32 status;
3652
__le32 *frame_status = &tx_resp->status;
3653
struct iwlwifi_ieee80211_tx_status *tx_status = NULL;
3654
struct ieee80211_hdr *hdr = NULL;
3655
int i, sh;
3656
int txq_id, idx;
3657
u16 seq;
3658
3659
if (agg->wait_for_ba)
3660
IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
3661
3662
agg->frame_count = tx_resp->frame_count;
3663
agg->start_idx = start_idx;
3664
agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3665
agg->bitmap0 = agg->bitmap1 = 0;
3666
3667
/* # frames attempted by Tx command */
3668
if (agg->frame_count == 1) {
3669
/* Only one frame was attempted; no block-ack will arrive */
3670
struct iwl4965_tx_queue *txq ;
3671
status = le32_to_cpu(frame_status[0]);
3672
3673
txq_id = agg->txq_id;
3674
txq = &priv->txq[txq_id];
3675
/* FIXME: code repetition */
3676
IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d \n",
3677
agg->frame_count, agg->start_idx);
3678
3679
tx_status = &(priv->txq[txq_id].txb[txq->q.read_ptr].status);
3680
tx_status->retry_count = tx_resp->failure_frame;
3681
tx_status->queue_number = status & 0xff;
3682
tx_status->queue_length = tx_resp->bt_kill_count;
3683
tx_status->queue_length |= tx_resp->failure_rts;
3684
3685
tx_status->flags = iwl4965_is_tx_success(status)?
3686
IEEE80211_TX_STATUS_ACK : 0;
3687
tx_status->control.tx_rate =
3688
iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags);
3689
/* FIXME: code repetition end */
3690
3691
IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
3692
status & 0xff, tx_resp->failure_frame);
3693
IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
3694
iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
3695
3696
agg->wait_for_ba = 0;
3697
} else {
3698
/* Two or more frames were attempted; expect block-ack */
3699
u64 bitmap = 0;
3700
int start = agg->start_idx;
3701
3702
/* Construct bit-map of pending frames within Tx window */
3703
for (i = 0; i < agg->frame_count; i++) {
3704
u16 sc;
3705
status = le32_to_cpu(frame_status[i]);
3706
seq = status >> 16;
3707
idx = SEQ_TO_INDEX(seq);
3708
txq_id = SEQ_TO_QUEUE(seq);
3709
3710
if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
3711
AGG_TX_STATE_ABORT_MSK))
3712
continue;
3713
3714
IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
3715
agg->frame_count, txq_id, idx);
3716
3717
hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
3718
3719
sc = le16_to_cpu(hdr->seq_ctrl);
3720
if (idx != (SEQ_TO_SN(sc) & 0xff)) {
3721
IWL_ERROR("BUG_ON idx doesn't match seq control"
3722
" idx=%d, seq_idx=%d, seq=%d\n",
3723
idx, SEQ_TO_SN(sc),
3724
hdr->seq_ctrl);
3725
return -1;
3726
}
3727
3728
IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
3729
i, idx, SEQ_TO_SN(sc));
3730
3731
sh = idx - start;
3732
if (sh > 64) {
3733
sh = (start - idx) + 0xff;
3734
bitmap = bitmap << sh;
3735
sh = 0;
3736
start = idx;
3737
} else if (sh < -64)
3738
sh = 0xff - (start - idx);
3739
else if (sh < 0) {
3740
sh = start - idx;
3741
start = idx;
3742
bitmap = bitmap << sh;
3743
sh = 0;
3744
}
3745
bitmap |= (1 << sh);
3746
IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
3747
start, (u32)(bitmap & 0xFFFFFFFF));
3748
}
3749
3750
agg->bitmap0 = bitmap & 0xFFFFFFFF;
3751
agg->bitmap1 = bitmap >> 32;
3752
agg->start_idx = start;
3753
agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3754
IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%x\n",
3755
agg->frame_count, agg->start_idx,
3756
agg->bitmap0);
3757
3758
if (bitmap)
3759
agg->wait_for_ba = 1;
3760
}
3761
return 0;
3762
}
3763
#endif
3764
#endif
3765
3766
/**
3767
* iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
3768
*/
3769
static void iwl4965_rx_reply_tx(struct iwl4965_priv *priv,
3770
struct iwl4965_rx_mem_buffer *rxb)
3771
{
3772
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3773
u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3774
int txq_id = SEQ_TO_QUEUE(sequence);
3775
int index = SEQ_TO_INDEX(sequence);
3776
struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
3777
struct iwlwifi_ieee80211_tx_status *tx_status;
3778
struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
3779
u32 status = le32_to_cpu(tx_resp->status);
3780
#ifdef CONFIG_IWL4965_HT
3781
#ifdef CONFIG_IWL4965_HT_AGG
3782
int tid, sta_id;
3783
#endif
3784
#endif
3785
3786
if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
3787
IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3788
"is out of range [0-%d] %d %d\n", txq_id,
3789
index, txq->q.n_bd, txq->q.write_ptr,
3790
txq->q.read_ptr);
3791
return;
3792
}
3793
3794
#ifdef CONFIG_IWL4965_HT
3795
#ifdef CONFIG_IWL4965_HT_AGG
3796
if (txq->sched_retry) {
3797
const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
3798
struct ieee80211_hdr *hdr =
3799
iwl4965_tx_queue_get_hdr(priv, txq_id, index);
3800
struct iwl4965_ht_agg *agg = NULL;
3801
__le16 *qc = ieee80211_get_qos_ctrl(hdr);
3802
3803
if (qc == NULL) {
3804
IWL_ERROR("BUG_ON qc is null!!!!\n");
3805
return;
3806
}
3807
3808
tid = le16_to_cpu(*qc) & 0xf;
3809
3810
sta_id = iwl4965_get_ra_sta_id(priv, hdr);
3811
if (unlikely(sta_id == IWL_INVALID_STATION)) {
3812
IWL_ERROR("Station not known for\n");
3813
return;
3814
}
3815
3816
agg = &priv->stations[sta_id].tid[tid].agg;
3817
3818
iwl4965_tx_status_reply_tx(priv, agg, tx_resp, index);
3819
3820
if ((tx_resp->frame_count == 1) &&
3821
!iwl4965_is_tx_success(status)) {
3822
/* TODO: send BAR */
3823
}
3824
3825
if ((txq->q.read_ptr != (scd_ssn & 0xff))) {
3826
index = iwl4965_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
3827
IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
3828
"%d index %d\n", scd_ssn , index);
3829
iwl4965_tx_queue_reclaim(priv, txq_id, index);
3830
}
3831
} else {
3832
#endif /* CONFIG_IWL4965_HT_AGG */
3833
#endif /* CONFIG_IWL4965_HT */
3834
tx_status = &(txq->txb[txq->q.read_ptr].status);
3835
3836
tx_status->retry_count = tx_resp->failure_frame;
3837
tx_status->queue_number = status;
3838
tx_status->queue_length = tx_resp->bt_kill_count;
3839
tx_status->queue_length |= tx_resp->failure_rts;
3840
3841
tx_status->flags =
3842
iwl4965_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
3843
3844
tx_status->control.tx_rate =
3845
iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags);
3846
3847
IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
3848
"retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
3849
status, le32_to_cpu(tx_resp->rate_n_flags),
3850
tx_resp->failure_frame);
3851
3852
IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
3853
if (index != -1)
3854
iwl4965_tx_queue_reclaim(priv, txq_id, index);
3855
#ifdef CONFIG_IWL4965_HT
3856
#ifdef CONFIG_IWL4965_HT_AGG
3857
}
3858
#endif /* CONFIG_IWL4965_HT_AGG */
3859
#endif /* CONFIG_IWL4965_HT */
3860
3861
if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
3862
IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n");
3863
}
3864
3865
3866
static void iwl4965_rx_reply_alive(struct iwl4965_priv *priv,
3867
struct iwl4965_rx_mem_buffer *rxb)
3868
{
3869
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3870
struct iwl4965_alive_resp *palive;
3871
struct delayed_work *pwork;
3872
3873
palive = &pkt->u.alive_frame;
3874
3875
IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3876
"0x%01X 0x%01X\n",
3877
palive->is_valid, palive->ver_type,
3878
palive->ver_subtype);
3879
3880
if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3881
IWL_DEBUG_INFO("Initialization Alive received.\n");
3882
memcpy(&priv->card_alive_init,
3883
&pkt->u.alive_frame,
3884
sizeof(struct iwl4965_init_alive_resp));
3885
pwork = &priv->init_alive_start;
3886
} else {
3887
IWL_DEBUG_INFO("Runtime Alive received.\n");
3888
memcpy(&priv->card_alive, &pkt->u.alive_frame,
3889
sizeof(struct iwl4965_alive_resp));
3890
pwork = &priv->alive_start;
3891
}
3892
3893
/* We delay the ALIVE response by 5ms to
3894
* give the HW RF Kill time to activate... */
3895
if (palive->is_valid == UCODE_VALID_OK)
3896
queue_delayed_work(priv->workqueue, pwork,
3897
msecs_to_jiffies(5));
3898
else
3899
IWL_WARNING("uCode did not respond OK.\n");
3900
}
3901
3902
static void iwl4965_rx_reply_add_sta(struct iwl4965_priv *priv,
3903
struct iwl4965_rx_mem_buffer *rxb)
3904
{
3905
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3906
3907
IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3908
return;
3909
}
3910
3911
static void iwl4965_rx_reply_error(struct iwl4965_priv *priv,
3912
struct iwl4965_rx_mem_buffer *rxb)
3913
{
3914
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3915
3916
IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3917
"seq 0x%04X ser 0x%08X\n",
3918
le32_to_cpu(pkt->u.err_resp.error_type),
3919
get_cmd_string(pkt->u.err_resp.cmd_id),
3920
pkt->u.err_resp.cmd_id,
3921
le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3922
le32_to_cpu(pkt->u.err_resp.error_info));
3923
}
3924
3925
#define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3926
3927
static void iwl4965_rx_csa(struct iwl4965_priv *priv, struct iwl4965_rx_mem_buffer *rxb)
3928
{
3929
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3930
struct iwl4965_rxon_cmd *rxon = (void *)&priv->active_rxon;
3931
struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
3932
IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3933
le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3934
rxon->channel = csa->channel;
3935
priv->staging_rxon.channel = csa->channel;
3936
}
3937
3938
static void iwl4965_rx_spectrum_measure_notif(struct iwl4965_priv *priv,
3939
struct iwl4965_rx_mem_buffer *rxb)
3940
{
3941
#ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3942
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3943
struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
3944
3945
if (!report->state) {
3946
IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3947
"Spectrum Measure Notification: Start\n");
3948
return;
3949
}
3950
3951
memcpy(&priv->measure_report, report, sizeof(*report));
3952
priv->measurement_status |= MEASUREMENT_READY;
3953
#endif
3954
}
3955
3956
static void iwl4965_rx_pm_sleep_notif(struct iwl4965_priv *priv,
3957
struct iwl4965_rx_mem_buffer *rxb)
3958
{
3959
#ifdef CONFIG_IWL4965_DEBUG
3960
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3961
struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
3962
IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3963
sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3964
#endif
3965
}
3966
3967
static void iwl4965_rx_pm_debug_statistics_notif(struct iwl4965_priv *priv,
3968
struct iwl4965_rx_mem_buffer *rxb)
3969
{
3970
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3971
IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3972
"notification for %s:\n",
3973
le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3974
iwl4965_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3975
}
3976
3977
static void iwl4965_bg_beacon_update(struct work_struct *work)
3978
{
3979
struct iwl4965_priv *priv =
3980
container_of(work, struct iwl4965_priv, beacon_update);
3981
struct sk_buff *beacon;
3982
3983
/* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3984
beacon = iwlwifi_ieee80211_beacon_get(priv->hw, priv->interface_id, NULL);
3985
3986
if (!beacon) {
3987
IWL_ERROR("update beacon failed\n");
3988
return;
3989
}
3990
3991
mutex_lock(&priv->mutex);
3992
/* new beacon skb is allocated every time; dispose previous.*/
3993
if (priv->ibss_beacon)
3994
dev_kfree_skb(priv->ibss_beacon);
3995
3996
priv->ibss_beacon = beacon;
3997
mutex_unlock(&priv->mutex);
3998
3999
iwl4965_send_beacon_cmd(priv);
4000
}
4001
4002
static void iwl4965_rx_beacon_notif(struct iwl4965_priv *priv,
4003
struct iwl4965_rx_mem_buffer *rxb)
4004
{
4005
#ifdef CONFIG_IWL4965_DEBUG
4006
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4007
struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
4008
u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
4009
4010
IWL_DEBUG_RX("beacon status %x retries %d iss %d "
4011
"tsf %d %d rate %d\n",
4012
le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
4013
beacon->beacon_notify_hdr.failure_frame,
4014
le32_to_cpu(beacon->ibss_mgr_status),
4015
le32_to_cpu(beacon->high_tsf),
4016
le32_to_cpu(beacon->low_tsf), rate);
4017
#endif
4018
4019
if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
4020
(!test_bit(STATUS_EXIT_PENDING, &priv->status)))
4021
queue_work(priv->workqueue, &priv->beacon_update);
4022
}
4023
4024
/* Service response to REPLY_SCAN_CMD (0x80) */
4025
static void iwl4965_rx_reply_scan(struct iwl4965_priv *priv,
4026
struct iwl4965_rx_mem_buffer *rxb)
4027
{
4028
#ifdef CONFIG_IWL4965_DEBUG
4029
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4030
struct iwl4965_scanreq_notification *notif =
4031
(struct iwl4965_scanreq_notification *)pkt->u.raw;
4032
4033
IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
4034
#endif
4035
}
4036
4037
/* Service SCAN_START_NOTIFICATION (0x82) */
4038
static void iwl4965_rx_scan_start_notif(struct iwl4965_priv *priv,
4039
struct iwl4965_rx_mem_buffer *rxb)
4040
{
4041
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4042
struct iwl4965_scanstart_notification *notif =
4043
(struct iwl4965_scanstart_notification *)pkt->u.raw;
4044
priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
4045
IWL_DEBUG_SCAN("Scan start: "
4046
"%d [802.11%s] "
4047
"(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
4048
notif->channel,
4049
notif->band ? "bg" : "a",
4050
notif->tsf_high,
4051
notif->tsf_low, notif->status, notif->beacon_timer);
4052
}
4053
4054
/* Service SCAN_RESULTS_NOTIFICATION (0x83) */
4055
static void iwl4965_rx_scan_results_notif(struct iwl4965_priv *priv,
4056
struct iwl4965_rx_mem_buffer *rxb)
4057
{
4058
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4059
struct iwl4965_scanresults_notification *notif =
4060
(struct iwl4965_scanresults_notification *)pkt->u.raw;
4061
4062
IWL_DEBUG_SCAN("Scan ch.res: "
4063
"%d [802.11%s] "
4064
"(TSF: 0x%08X:%08X) - %d "
4065
"elapsed=%lu usec (%dms since last)\n",
4066
notif->channel,
4067
notif->band ? "bg" : "a",
4068
le32_to_cpu(notif->tsf_high),
4069
le32_to_cpu(notif->tsf_low),
4070
le32_to_cpu(notif->statistics[0]),
4071
le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
4072
jiffies_to_msecs(elapsed_jiffies
4073
(priv->last_scan_jiffies, jiffies)));
4074
4075
priv->last_scan_jiffies = jiffies;
4076
priv->next_scan_jiffies = 0;
4077
}
4078
4079
/* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
4080
static void iwl4965_rx_scan_complete_notif(struct iwl4965_priv *priv,
4081
struct iwl4965_rx_mem_buffer *rxb)
4082
{
4083
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4084
struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
4085
4086
IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
4087
scan_notif->scanned_channels,
4088
scan_notif->tsf_low,
4089
scan_notif->tsf_high, scan_notif->status);
4090
4091
/* The HW is no longer scanning */
4092
clear_bit(STATUS_SCAN_HW, &priv->status);
4093
4094
/* The scan completion notification came in, so kill that timer... */
4095
cancel_delayed_work(&priv->scan_check);
4096
4097
IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
4098
(priv->scan_bands == 2) ? "2.4" : "5.2",
4099
jiffies_to_msecs(elapsed_jiffies
4100
(priv->scan_pass_start, jiffies)));
4101
4102
/* Remove this scanned band from the list
4103
* of pending bands to scan */
4104
priv->scan_bands--;
4105
4106
/* If a request to abort was given, or the scan did not succeed
4107
* then we reset the scan state machine and terminate,
4108
* re-queuing another scan if one has been requested */
4109
if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
4110
IWL_DEBUG_INFO("Aborted scan completed.\n");
4111
clear_bit(STATUS_SCAN_ABORTING, &priv->status);
4112
} else {
4113
/* If there are more bands on this scan pass reschedule */
4114
if (priv->scan_bands > 0)
4115
goto reschedule;
4116
}
4117
4118
priv->last_scan_jiffies = jiffies;
4119
priv->next_scan_jiffies = 0;
4120
IWL_DEBUG_INFO("Setting scan to off\n");
4121
4122
clear_bit(STATUS_SCANNING, &priv->status);
4123
4124
IWL_DEBUG_INFO("Scan took %dms\n",
4125
jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
4126
4127
queue_work(priv->workqueue, &priv->scan_completed);
4128
4129
return;
4130
4131
reschedule:
4132
priv->scan_pass_start = jiffies;
4133
queue_work(priv->workqueue, &priv->request_scan);
4134
}
4135
4136
/* Handle notification from uCode that card's power state is changing
4137
* due to software, hardware, or critical temperature RFKILL */
4138
static void iwl4965_rx_card_state_notif(struct iwl4965_priv *priv,
4139
struct iwl4965_rx_mem_buffer *rxb)
4140
{
4141
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4142
u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
4143
unsigned long status = priv->status;
4144
4145
IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
4146
(flags & HW_CARD_DISABLED) ? "Kill" : "On",
4147
(flags & SW_CARD_DISABLED) ? "Kill" : "On");
4148
4149
if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
4150
RF_CARD_DISABLED)) {
4151
4152
iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
4153
CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
4154
4155
if (!iwl4965_grab_nic_access(priv)) {
4156
iwl4965_write_direct32(
4157
priv, HBUS_TARG_MBX_C,
4158
HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
4159
4160
iwl4965_release_nic_access(priv);
4161
}
4162
4163
if (!(flags & RXON_CARD_DISABLED)) {
4164
iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
4165
CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
4166
if (!iwl4965_grab_nic_access(priv)) {
4167
iwl4965_write_direct32(
4168
priv, HBUS_TARG_MBX_C,
4169
HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
4170
4171
iwl4965_release_nic_access(priv);
4172
}
4173
}
4174
4175
if (flags & RF_CARD_DISABLED) {
4176
iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
4177
CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
4178
iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4179
if (!iwl4965_grab_nic_access(priv))
4180
iwl4965_release_nic_access(priv);
4181
}
4182
}
4183
4184
if (flags & HW_CARD_DISABLED)
4185
set_bit(STATUS_RF_KILL_HW, &priv->status);
4186
else
4187
clear_bit(STATUS_RF_KILL_HW, &priv->status);
4188
4189
4190
if (flags & SW_CARD_DISABLED)
4191
set_bit(STATUS_RF_KILL_SW, &priv->status);
4192
else
4193
clear_bit(STATUS_RF_KILL_SW, &priv->status);
4194
4195
if (!(flags & RXON_CARD_DISABLED))
4196
iwl4965_scan_cancel(priv);
4197
4198
if ((test_bit(STATUS_RF_KILL_HW, &status) !=
4199
test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
4200
(test_bit(STATUS_RF_KILL_SW, &status) !=
4201
test_bit(STATUS_RF_KILL_SW, &priv->status)))
4202
queue_work(priv->workqueue, &priv->rf_kill);
4203
else
4204
wake_up_interruptible(&priv->wait_command_queue);
4205
}
4206
4207
/**
4208
* iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
4209
*
4210
* Setup the RX handlers for each of the reply types sent from the uCode
4211
* to the host.
4212
*
4213
* This function chains into the hardware specific files for them to setup
4214
* any hardware specific handlers as well.
4215
*/
4216
static void iwl4965_setup_rx_handlers(struct iwl4965_priv *priv)
4217
{
4218
priv->rx_handlers[REPLY_ALIVE] = iwl4965_rx_reply_alive;
4219
priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta;
4220
priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
4221
priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
4222
priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
4223
iwl4965_rx_spectrum_measure_notif;
4224
priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
4225
priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
4226
iwl4965_rx_pm_debug_statistics_notif;
4227
priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
4228
4229
/*
4230
* The same handler is used for both the REPLY to a discrete
4231
* statistics request from the host as well as for the periodic
4232
* statistics notifications (after received beacons) from the uCode.
4233
*/
4234
priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
4235
priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
4236
4237
priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
4238
priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
4239
priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
4240
iwl4965_rx_scan_results_notif;
4241
priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
4242
iwl4965_rx_scan_complete_notif;
4243
priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
4244
priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
4245
4246
/* Set up hardware specific Rx handlers */
4247
iwl4965_hw_rx_handler_setup(priv);
4248
}
4249
4250
/**
4251
* iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
4252
* @rxb: Rx buffer to reclaim
4253
*
4254
* If an Rx buffer has an async callback associated with it the callback
4255
* will be executed. The attached skb (if present) will only be freed
4256
* if the callback returns 1
4257
*/
4258
static void iwl4965_tx_cmd_complete(struct iwl4965_priv *priv,
4259
struct iwl4965_rx_mem_buffer *rxb)
4260
{
4261
struct iwl4965_rx_packet *pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
4262
u16 sequence = le16_to_cpu(pkt->hdr.sequence);
4263
int txq_id = SEQ_TO_QUEUE(sequence);
4264
int index = SEQ_TO_INDEX(sequence);
4265
int huge = sequence & SEQ_HUGE_FRAME;
4266
int cmd_index;
4267
struct iwl4965_cmd *cmd;
4268
4269
/* If a Tx command is being handled and it isn't in the actual
4270
* command queue then there a command routing bug has been introduced
4271
* in the queue management code. */
4272
if (txq_id != IWL_CMD_QUEUE_NUM)
4273
IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
4274
txq_id, pkt->hdr.cmd);
4275
BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
4276
4277
cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
4278
cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
4279
4280
/* Input error checking is done when commands are added to queue. */
4281
if (cmd->meta.flags & CMD_WANT_SKB) {
4282
cmd->meta.source->u.skb = rxb->skb;
4283
rxb->skb = NULL;
4284
} else if (cmd->meta.u.callback &&
4285
!cmd->meta.u.callback(priv, cmd, rxb->skb))
4286
rxb->skb = NULL;
4287
4288
iwl4965_tx_queue_reclaim(priv, txq_id, index);
4289
4290
if (!(cmd->meta.flags & CMD_ASYNC)) {
4291
clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4292
wake_up_interruptible(&priv->wait_command_queue);
4293
}
4294
}
4295
4296
/************************** RX-FUNCTIONS ****************************/
4297
/*
4298
* Rx theory of operation
4299
*
4300
* Driver allocates a circular buffer of Receive Buffer Descriptors (RBDs),
4301
* each of which point to Receive Buffers to be filled by 4965. These get
4302
* used not only for Rx frames, but for any command response or notification
4303
* from the 4965. The driver and 4965 manage the Rx buffers by means
4304
* of indexes into the circular buffer.
4305
*
4306
* Rx Queue Indexes
4307
* The host/firmware share two index registers for managing the Rx buffers.
4308
*
4309
* The READ index maps to the first position that the firmware may be writing
4310
* to -- the driver can read up to (but not including) this position and get
4311
* good data.
4312
* The READ index is managed by the firmware once the card is enabled.
4313
*
4314
* The WRITE index maps to the last position the driver has read from -- the
4315
* position preceding WRITE is the last slot the firmware can place a packet.
4316
*
4317
* The queue is empty (no good data) if WRITE = READ - 1, and is full if
4318
* WRITE = READ.
4319
*
4320
* During initialization, the host sets up the READ queue position to the first
4321
* INDEX position, and WRITE to the last (READ - 1 wrapped)
4322
*
4323
* When the firmware places a packet in a buffer, it will advance the READ index
4324
* and fire the RX interrupt. The driver can then query the READ index and
4325
* process as many packets as possible, moving the WRITE index forward as it
4326
* resets the Rx queue buffers with new memory.
4327
*
4328
* The management in the driver is as follows:
4329
* + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
4330
* iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
4331
* to replenish the iwl->rxq->rx_free.
4332
* + In iwl4965_rx_replenish (scheduled) if 'processed' != 'read' then the
4333
* iwl->rxq is replenished and the READ INDEX is updated (updating the
4334
* 'processed' and 'read' driver indexes as well)
4335
* + A received packet is processed and handed to the kernel network stack,
4336
* detached from the iwl->rxq. The driver 'processed' index is updated.
4337
* + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
4338
* list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
4339
* INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
4340
* were enough free buffers and RX_STALLED is set it is cleared.
4341
*
4342
*
4343
* Driver sequence:
4344
*
4345
* iwl4965_rx_queue_alloc() Allocates rx_free
4346
* iwl4965_rx_replenish() Replenishes rx_free list from rx_used, and calls
4347
* iwl4965_rx_queue_restock
4348
* iwl4965_rx_queue_restock() Moves available buffers from rx_free into Rx
4349
* queue, updates firmware pointers, and updates
4350
* the WRITE index. If insufficient rx_free buffers
4351
* are available, schedules iwl4965_rx_replenish
4352
*
4353
* -- enable interrupts --
4354
* ISR - iwl4965_rx() Detach iwl4965_rx_mem_buffers from pool up to the
4355
* READ INDEX, detaching the SKB from the pool.
4356
* Moves the packet buffer from queue to rx_used.
4357
* Calls iwl4965_rx_queue_restock to refill any empty
4358
* slots.
4359
* ...
4360
*
4361
*/
4362
4363
/**
4364
* iwl4965_rx_queue_space - Return number of free slots available in queue.
4365
*/
4366
static int iwl4965_rx_queue_space(const struct iwl4965_rx_queue *q)
4367
{
4368
int s = q->read - q->write;
4369
if (s <= 0)
4370
s += RX_QUEUE_SIZE;
4371
/* keep some buffer to not confuse full and empty queue */
4372
s -= 2;
4373
if (s < 0)
4374
s = 0;
4375
return s;
4376
}
4377
4378
/**
4379
* iwl4965_rx_queue_update_write_ptr - Update the write pointer for the RX queue
4380
*/
4381
int iwl4965_rx_queue_update_write_ptr(struct iwl4965_priv *priv, struct iwl4965_rx_queue *q)
4382
{
4383
u32 reg = 0;
4384
int rc = 0;
4385
unsigned long flags;
4386
4387
spin_lock_irqsave(&q->lock, flags);
4388
4389
if (q->need_update == 0)
4390
goto exit_unlock;
4391
4392
/* If power-saving is in use, make sure device is awake */
4393
if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4394
reg = iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4395
4396
if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4397
iwl4965_set_bit(priv, CSR_GP_CNTRL,
4398
CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4399
goto exit_unlock;
4400
}
4401
4402
rc = iwl4965_grab_nic_access(priv);
4403
if (rc)
4404
goto exit_unlock;
4405
4406
/* Device expects a multiple of 8 */
4407
iwl4965_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
4408
q->write & ~0x7);
4409
iwl4965_release_nic_access(priv);
4410
4411
/* Else device is assumed to be awake */
4412
} else
4413
/* Device expects a multiple of 8 */
4414
iwl4965_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
4415
4416
4417
q->need_update = 0;
4418
4419
exit_unlock:
4420
spin_unlock_irqrestore(&q->lock, flags);
4421
return rc;
4422
}
4423
4424
/**
4425
* iwl4965_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
4426
*/
4427
static inline __le32 iwl4965_dma_addr2rbd_ptr(struct iwl4965_priv *priv,
4428
dma_addr_t dma_addr)
4429
{
4430
return cpu_to_le32((u32)(dma_addr >> 8));
4431
}
4432
4433
4434
/**
4435
* iwl4965_rx_queue_restock - refill RX queue from pre-allocated pool
4436
*
4437
* If there are slots in the RX queue that need to be restocked,
4438
* and we have free pre-allocated buffers, fill the ranks as much
4439
* as we can, pulling from rx_free.
4440
*
4441
* This moves the 'write' index forward to catch up with 'processed', and
4442
* also updates the memory address in the firmware to reference the new
4443
* target buffer.
4444
*/
4445
static int iwl4965_rx_queue_restock(struct iwl4965_priv *priv)
4446
{
4447
struct iwl4965_rx_queue *rxq = &priv->rxq;
4448
struct list_head *element;
4449
struct iwl4965_rx_mem_buffer *rxb;
4450
unsigned long flags;
4451
int write, rc;
4452
4453
spin_lock_irqsave(&rxq->lock, flags);
4454
write = rxq->write & ~0x7;
4455
while ((iwl4965_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
4456
/* Get next free Rx buffer, remove from free list */
4457
element = rxq->rx_free.next;
4458
rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
4459
list_del(element);
4460
4461
/* Point to Rx buffer via next RBD in circular buffer */
4462
rxq->bd[rxq->write] = iwl4965_dma_addr2rbd_ptr(priv, rxb->dma_addr);
4463
rxq->queue[rxq->write] = rxb;
4464
rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
4465
rxq->free_count--;
4466
}
4467
spin_unlock_irqrestore(&rxq->lock, flags);
4468
/* If the pre-allocated buffer pool is dropping low, schedule to
4469
* refill it */
4470
if (rxq->free_count <= RX_LOW_WATERMARK)
4471
queue_work(priv->workqueue, &priv->rx_replenish);
4472
4473
4474
/* If we've added more space for the firmware to place data, tell it.
4475
* Increment device's write pointer in multiples of 8. */
4476
if ((write != (rxq->write & ~0x7))
4477
|| (abs(rxq->write - rxq->read) > 7)) {
4478
spin_lock_irqsave(&rxq->lock, flags);
4479
rxq->need_update = 1;
4480
spin_unlock_irqrestore(&rxq->lock, flags);
4481
rc = iwl4965_rx_queue_update_write_ptr(priv, rxq);
4482
if (rc)
4483
return rc;
4484
}
4485
4486
return 0;
4487
}
4488
4489
/**
4490
* iwl4965_rx_replenish - Move all used packet from rx_used to rx_free
4491
*
4492
* When moving to rx_free an SKB is allocated for the slot.
4493
*
4494
* Also restock the Rx queue via iwl4965_rx_queue_restock.
4495
* This is called as a scheduled work item (except for during initialization)
4496
*/
4497
static void iwl4965_rx_allocate(struct iwl4965_priv *priv)
4498
{
4499
struct iwl4965_rx_queue *rxq = &priv->rxq;
4500
struct list_head *element;
4501
struct iwl4965_rx_mem_buffer *rxb;
4502
unsigned long flags;
4503
spin_lock_irqsave(&rxq->lock, flags);
4504
while (!list_empty(&rxq->rx_used)) {
4505
element = rxq->rx_used.next;
4506
rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
4507
4508
/* Alloc a new receive buffer */
4509
rxb->skb =
4510
alloc_skb(IWL_RX_BUF_SIZE, __GFP_NOWARN | GFP_ATOMIC);
4511
if (!rxb->skb) {
4512
if (net_ratelimit())
4513
printk(KERN_CRIT DRV_NAME
4514
": Can not allocate SKB buffers\n");
4515
/* We don't reschedule replenish work here -- we will
4516
* call the restock method and if it still needs
4517
* more buffers it will schedule replenish */
4518
break;
4519
}
4520
priv->alloc_rxb_skb++;
4521
list_del(element);
4522
4523
/* Get physical address of RB/SKB */
4524
rxb->dma_addr =
4525
pci_map_single(priv->pci_dev, rxb->skb->data,
4526
IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4527
list_add_tail(&rxb->list, &rxq->rx_free);
4528
rxq->free_count++;
4529
}
4530
spin_unlock_irqrestore(&rxq->lock, flags);
4531
}
4532
4533
/*
4534
* this should be called while priv->lock is locked
4535
*/
4536
static void __iwl4965_rx_replenish(void *data)
4537
{
4538
struct iwl4965_priv *priv = data;
4539
4540
iwl4965_rx_allocate(priv);
4541
iwl4965_rx_queue_restock(priv);
4542
}
4543
4544
4545
void iwl4965_rx_replenish(void *data)
4546
{
4547
struct iwl4965_priv *priv = data;
4548
unsigned long flags;
4549
4550
iwl4965_rx_allocate(priv);
4551
4552
spin_lock_irqsave(&priv->lock, flags);
4553
iwl4965_rx_queue_restock(priv);
4554
spin_unlock_irqrestore(&priv->lock, flags);
4555
}
4556
4557
/* Assumes that the skb field of the buffers in 'pool' is kept accurate.
4558
* If an SKB has been detached, the POOL needs to have its SKB set to NULL
4559
* This free routine walks the list of POOL entries and if SKB is set to
4560
* non NULL it is unmapped and freed
4561
*/
4562
static void iwl4965_rx_queue_free(struct iwl4965_priv *priv, struct iwl4965_rx_queue *rxq)
4563
{
4564
int i;
4565
for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
4566
if (rxq->pool[i].skb != NULL) {
4567
pci_unmap_single(priv->pci_dev,
4568
rxq->pool[i].dma_addr,
4569
IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4570
dev_kfree_skb(rxq->pool[i].skb);
4571
}
4572
}
4573
4574
pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
4575
rxq->dma_addr);
4576
rxq->bd = NULL;
4577
}
4578
4579
int iwl4965_rx_queue_alloc(struct iwl4965_priv *priv)
4580
{
4581
struct iwl4965_rx_queue *rxq = &priv->rxq;
4582
struct pci_dev *dev = priv->pci_dev;
4583
int i;
4584
4585
spin_lock_init(&rxq->lock);
4586
INIT_LIST_HEAD(&rxq->rx_free);
4587
INIT_LIST_HEAD(&rxq->rx_used);
4588
4589
/* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
4590
rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
4591
if (!rxq->bd)
4592
return -ENOMEM;
4593
4594
/* Fill the rx_used queue with _all_ of the Rx buffers */
4595
for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
4596
list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4597
4598
/* Set us so that we have processed and used all buffers, but have
4599
* not restocked the Rx queue with fresh buffers */
4600
rxq->read = rxq->write = 0;
4601
rxq->free_count = 0;
4602
rxq->need_update = 0;
4603
return 0;
4604
}
4605
4606
void iwl4965_rx_queue_reset(struct iwl4965_priv *priv, struct iwl4965_rx_queue *rxq)
4607
{
4608
unsigned long flags;
4609
int i;
4610
spin_lock_irqsave(&rxq->lock, flags);
4611
INIT_LIST_HEAD(&rxq->rx_free);
4612
INIT_LIST_HEAD(&rxq->rx_used);
4613
/* Fill the rx_used queue with _all_ of the Rx buffers */
4614
for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
4615
/* In the reset function, these buffers may have been allocated
4616
* to an SKB, so we need to unmap and free potential storage */
4617
if (rxq->pool[i].skb != NULL) {
4618
pci_unmap_single(priv->pci_dev,
4619
rxq->pool[i].dma_addr,
4620
IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4621
priv->alloc_rxb_skb--;
4622
dev_kfree_skb(rxq->pool[i].skb);
4623
rxq->pool[i].skb = NULL;
4624
}
4625
list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4626
}
4627
4628
/* Set us so that we have processed and used all buffers, but have
4629
* not restocked the Rx queue with fresh buffers */
4630
rxq->read = rxq->write = 0;
4631
rxq->free_count = 0;
4632
spin_unlock_irqrestore(&rxq->lock, flags);
4633
}
4634
4635
/* Convert linear signal-to-noise ratio into dB */
4636
static u8 ratio2dB[100] = {
4637
/* 0 1 2 3 4 5 6 7 8 9 */
4638
0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
4639
20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
4640
26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
4641
29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
4642
32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
4643
34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
4644
36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
4645
37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
4646
38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
4647
39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
4648
};
4649
4650
/* Calculates a relative dB value from a ratio of linear
4651
* (i.e. not dB) signal levels.
4652
* Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4653
int iwl4965_calc_db_from_ratio(int sig_ratio)
4654
{
4655
/* 1000:1 or higher just report as 60 dB */
4656
if (sig_ratio >= 1000)
4657
return 60;
4658
4659
/* 100:1 or higher, divide by 10 and use table,
4660
* add 20 dB to make up for divide by 10 */
4661
if (sig_ratio >= 100)
4662
return (20 + (int)ratio2dB[sig_ratio/10]);
4663
4664
/* We shouldn't see this */
4665
if (sig_ratio < 1)
4666
return 0;
4667
4668
/* Use table for ratios 1:1 - 99:1 */
4669
return (int)ratio2dB[sig_ratio];
4670
}
4671
4672
#define PERFECT_RSSI (-20) /* dBm */
4673
#define WORST_RSSI (-95) /* dBm */
4674
#define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4675
4676
/* Calculate an indication of rx signal quality (a percentage, not dBm!).
4677
* See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4678
* about formulas used below. */
4679
int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
4680
{
4681
int sig_qual;
4682
int degradation = PERFECT_RSSI - rssi_dbm;
4683
4684
/* If we get a noise measurement, use signal-to-noise ratio (SNR)
4685
* as indicator; formula is (signal dbm - noise dbm).
4686
* SNR at or above 40 is a great signal (100%).
4687
* Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4688
* Weakest usable signal is usually 10 - 15 dB SNR. */
4689
if (noise_dbm) {
4690
if (rssi_dbm - noise_dbm >= 40)
4691
return 100;
4692
else if (rssi_dbm < noise_dbm)
4693
return 0;
4694
sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
4695
4696
/* Else use just the signal level.
4697
* This formula is a least squares fit of data points collected and
4698
* compared with a reference system that had a percentage (%) display
4699
* for signal quality. */
4700
} else
4701
sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
4702
(15 * RSSI_RANGE + 62 * degradation)) /
4703
(RSSI_RANGE * RSSI_RANGE);
4704
4705
if (sig_qual > 100)
4706
sig_qual = 100;
4707
else if (sig_qual < 1)
4708
sig_qual = 0;
4709
4710
return sig_qual;
4711
}
4712
4713
/**
4714
* iwl4965_rx_handle - Main entry function for receiving responses from uCode
4715
*
4716
* Uses the priv->rx_handlers callback function array to invoke
4717
* the appropriate handlers, including command responses,
4718
* frame-received notifications, and other notifications.
4719
*/
4720
static void iwl4965_rx_handle(struct iwl4965_priv *priv)
4721
{
4722
struct iwl4965_rx_mem_buffer *rxb;
4723
struct iwl4965_rx_packet *pkt;
4724
struct iwl4965_rx_queue *rxq = &priv->rxq;
4725
u32 r, i;
4726
int reclaim;
4727
unsigned long flags;
4728
u8 fill_rx = 0;
4729
u32 count = 0;
4730
4731
/* uCode's read index (stored in shared DRAM) indicates the last Rx
4732
* buffer that the driver may process (last buffer filled by ucode). */
4733
r = iwl4965_hw_get_rx_read(priv);
4734
i = rxq->read;
4735
4736
/* Rx interrupt, but nothing sent from uCode */
4737
if (i == r)
4738
IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
4739
4740
if (iwl4965_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
4741
fill_rx = 1;
4742
4743
while (i != r) {
4744
rxb = rxq->queue[i];
4745
4746
/* If an RXB doesn't have a Rx queue slot associated with it,
4747
* then a bug has been introduced in the queue refilling
4748
* routines -- catch it here */
4749
BUG_ON(rxb == NULL);
4750
4751
rxq->queue[i] = NULL;
4752
4753
pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
4754
IWL_RX_BUF_SIZE,
4755
PCI_DMA_FROMDEVICE);
4756
pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
4757
4758
/* Reclaim a command buffer only if this packet is a response
4759
* to a (driver-originated) command.
4760
* If the packet (e.g. Rx frame) originated from uCode,
4761
* there is no command buffer to reclaim.
4762
* Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4763
* but apparently a few don't get set; catch them here. */
4764
reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
4765
(pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
4766
(pkt->hdr.cmd != REPLY_4965_RX) &&
4767
(pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
4768
(pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
4769
(pkt->hdr.cmd != REPLY_TX);
4770
4771
/* Based on type of command response or notification,
4772
* handle those that need handling via function in
4773
* rx_handlers table. See iwl4965_setup_rx_handlers() */
4774
if (priv->rx_handlers[pkt->hdr.cmd]) {
4775
IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4776
"r = %d, i = %d, %s, 0x%02x\n", r, i,
4777
get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
4778
priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
4779
} else {
4780
/* No handling needed */
4781
IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4782
"r %d i %d No handler needed for %s, 0x%02x\n",
4783
r, i, get_cmd_string(pkt->hdr.cmd),
4784
pkt->hdr.cmd);
4785
}
4786
4787
if (reclaim) {
4788
/* Invoke any callbacks, transfer the skb to caller, and
4789
* fire off the (possibly) blocking iwl4965_send_cmd()
4790
* as we reclaim the driver command queue */
4791
if (rxb && rxb->skb)
4792
iwl4965_tx_cmd_complete(priv, rxb);
4793
else
4794
IWL_WARNING("Claim null rxb?\n");
4795
}
4796
4797
/* For now we just don't re-use anything. We can tweak this
4798
* later to try and re-use notification packets and SKBs that
4799
* fail to Rx correctly */
4800
if (rxb->skb != NULL) {
4801
priv->alloc_rxb_skb--;
4802
dev_kfree_skb_any(rxb->skb);
4803
rxb->skb = NULL;
4804
}
4805
4806
pci_unmap_single(priv->pci_dev, rxb->dma_addr,
4807
IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4808
spin_lock_irqsave(&rxq->lock, flags);
4809
list_add_tail(&rxb->list, &priv->rxq.rx_used);
4810
spin_unlock_irqrestore(&rxq->lock, flags);
4811
i = (i + 1) & RX_QUEUE_MASK;
4812
/* If there are a lot of unused frames,
4813
* restock the Rx queue so ucode wont assert. */
4814
if (fill_rx) {
4815
count++;
4816
if (count >= 8) {
4817
priv->rxq.read = i;
4818
__iwl4965_rx_replenish(priv);
4819
count = 0;
4820
}
4821
}
4822
}
4823
4824
/* Backtrack one entry */
4825
priv->rxq.read = i;
4826
iwl4965_rx_queue_restock(priv);
4827
}
4828
4829
/**
4830
* iwl4965_tx_queue_update_write_ptr - Send new write index to hardware
4831
*/
4832
static int iwl4965_tx_queue_update_write_ptr(struct iwl4965_priv *priv,
4833
struct iwl4965_tx_queue *txq)
4834
{
4835
u32 reg = 0;
4836
int rc = 0;
4837
int txq_id = txq->q.id;
4838
4839
if (txq->need_update == 0)
4840
return rc;
4841
4842
/* if we're trying to save power */
4843
if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4844
/* wake up nic if it's powered down ...
4845
* uCode will wake up, and interrupt us again, so next
4846
* time we'll skip this part. */
4847
reg = iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4848
4849
if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4850
IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4851
iwl4965_set_bit(priv, CSR_GP_CNTRL,
4852
CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4853
return rc;
4854
}
4855
4856
/* restore this queue's parameters in nic hardware. */
4857
rc = iwl4965_grab_nic_access(priv);
4858
if (rc)
4859
return rc;
4860
iwl4965_write_direct32(priv, HBUS_TARG_WRPTR,
4861
txq->q.write_ptr | (txq_id << 8));
4862
iwl4965_release_nic_access(priv);
4863
4864
/* else not in power-save mode, uCode will never sleep when we're
4865
* trying to tx (during RFKILL, we're not trying to tx). */
4866
} else
4867
iwl4965_write32(priv, HBUS_TARG_WRPTR,
4868
txq->q.write_ptr | (txq_id << 8));
4869
4870
txq->need_update = 0;
4871
4872
return rc;
4873
}
4874
4875
#ifdef CONFIG_IWL4965_DEBUG
4876
static void iwl4965_print_rx_config_cmd(struct iwl4965_rxon_cmd *rxon)
4877
{
4878
IWL_DEBUG_RADIO("RX CONFIG:\n");
4879
iwl4965_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4880
IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4881
IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4882
IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4883
le32_to_cpu(rxon->filter_flags));
4884
IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4885
IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4886
rxon->ofdm_basic_rates);
4887
IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
4888
IWL_DEBUG_RADIO("u8[6] node_addr: " MAC_FMT "\n",
4889
MAC_ARG(rxon->node_addr));
4890
IWL_DEBUG_RADIO("u8[6] bssid_addr: " MAC_FMT "\n",
4891
MAC_ARG(rxon->bssid_addr));
4892
IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4893
}
4894
#endif
4895
4896
static void iwl4965_enable_interrupts(struct iwl4965_priv *priv)
4897
{
4898
IWL_DEBUG_ISR("Enabling interrupts\n");
4899
set_bit(STATUS_INT_ENABLED, &priv->status);
4900
iwl4965_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4901
}
4902
4903
static inline void iwl4965_disable_interrupts(struct iwl4965_priv *priv)
4904
{
4905
clear_bit(STATUS_INT_ENABLED, &priv->status);
4906
4907
/* disable interrupts from uCode/NIC to host */
4908
iwl4965_write32(priv, CSR_INT_MASK, 0x00000000);
4909
4910
/* acknowledge/clear/reset any interrupts still pending
4911
* from uCode or flow handler (Rx/Tx DMA) */
4912
iwl4965_write32(priv, CSR_INT, 0xffffffff);
4913
iwl4965_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4914
IWL_DEBUG_ISR("Disabled interrupts\n");
4915
}
4916
4917
static const char *desc_lookup(int i)
4918
{
4919
switch (i) {
4920
case 1:
4921
return "FAIL";
4922
case 2:
4923
return "BAD_PARAM";
4924
case 3:
4925
return "BAD_CHECKSUM";
4926
case 4:
4927
return "NMI_INTERRUPT";
4928
case 5:
4929
return "SYSASSERT";
4930
case 6:
4931
return "FATAL_ERROR";
4932
}
4933
4934
return "UNKNOWN";
4935
}
4936
4937
#define ERROR_START_OFFSET (1 * sizeof(u32))
4938
#define ERROR_ELEM_SIZE (7 * sizeof(u32))
4939
4940
static void iwl4965_dump_nic_error_log(struct iwl4965_priv *priv)
4941
{
4942
u32 data2, line;
4943
u32 desc, time, count, base, data1;
4944
u32 blink1, blink2, ilink1, ilink2;
4945
int rc;
4946
4947
base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4948
4949
if (!iwl4965_hw_valid_rtc_data_addr(base)) {
4950
IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4951
return;
4952
}
4953
4954
rc = iwl4965_grab_nic_access(priv);
4955
if (rc) {
4956
IWL_WARNING("Can not read from adapter at this time.\n");
4957
return;
4958
}
4959
4960
count = iwl4965_read_targ_mem(priv, base);
4961
4962
if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4963
IWL_ERROR("Start IWL Error Log Dump:\n");
4964
IWL_ERROR("Status: 0x%08lX, Config: %08X count: %d\n",
4965
priv->status, priv->config, count);
4966
}
4967
4968
desc = iwl4965_read_targ_mem(priv, base + 1 * sizeof(u32));
4969
blink1 = iwl4965_read_targ_mem(priv, base + 3 * sizeof(u32));
4970
blink2 = iwl4965_read_targ_mem(priv, base + 4 * sizeof(u32));
4971
ilink1 = iwl4965_read_targ_mem(priv, base + 5 * sizeof(u32));
4972
ilink2 = iwl4965_read_targ_mem(priv, base + 6 * sizeof(u32));
4973
data1 = iwl4965_read_targ_mem(priv, base + 7 * sizeof(u32));
4974
data2 = iwl4965_read_targ_mem(priv, base + 8 * sizeof(u32));
4975
line = iwl4965_read_targ_mem(priv, base + 9 * sizeof(u32));
4976
time = iwl4965_read_targ_mem(priv, base + 11 * sizeof(u32));
4977
4978
IWL_ERROR("Desc Time "
4979
"data1 data2 line\n");
4980
IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
4981
desc_lookup(desc), desc, time, data1, data2, line);
4982
IWL_ERROR("blink1 blink2 ilink1 ilink2\n");
4983
IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
4984
ilink1, ilink2);
4985
4986
iwl4965_release_nic_access(priv);
4987
}
4988
4989
#define EVENT_START_OFFSET (4 * sizeof(u32))
4990
4991
/**
4992
* iwl4965_print_event_log - Dump error event log to syslog
4993
*
4994
* NOTE: Must be called with iwl4965_grab_nic_access() already obtained!
4995
*/
4996
static void iwl4965_print_event_log(struct iwl4965_priv *priv, u32 start_idx,
4997
u32 num_events, u32 mode)
4998
{
4999
u32 i;
5000
u32 base; /* SRAM byte address of event log header */
5001
u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
5002
u32 ptr; /* SRAM byte address of log data */
5003
u32 ev, time, data; /* event log data */
5004
5005
if (num_events == 0)
5006
return;
5007
5008
base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
5009
5010
if (mode == 0)
5011
event_size = 2 * sizeof(u32);
5012
else
5013
event_size = 3 * sizeof(u32);
5014
5015
ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
5016
5017
/* "time" is actually "data" for mode 0 (no timestamp).
5018
* place event id # at far right for easier visual parsing. */
5019
for (i = 0; i < num_events; i++) {
5020
ev = iwl4965_read_targ_mem(priv, ptr);
5021
ptr += sizeof(u32);
5022
time = iwl4965_read_targ_mem(priv, ptr);
5023
ptr += sizeof(u32);
5024
if (mode == 0)
5025
IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
5026
else {
5027
data = iwl4965_read_targ_mem(priv, ptr);
5028
ptr += sizeof(u32);
5029
IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
5030
}
5031
}
5032
}
5033
5034
static void iwl4965_dump_nic_event_log(struct iwl4965_priv *priv)
5035
{
5036
int rc;
5037
u32 base; /* SRAM byte address of event log header */
5038
u32 capacity; /* event log capacity in # entries */
5039
u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
5040
u32 num_wraps; /* # times uCode wrapped to top of log */
5041
u32 next_entry; /* index of next entry to be written by uCode */
5042
u32 size; /* # entries that we'll print */
5043
5044
base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
5045
if (!iwl4965_hw_valid_rtc_data_addr(base)) {
5046
IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
5047
return;
5048
}
5049
5050
rc = iwl4965_grab_nic_access(priv);
5051
if (rc) {
5052
IWL_WARNING("Can not read from adapter at this time.\n");
5053
return;
5054
}
5055
5056
/* event log header */
5057
capacity = iwl4965_read_targ_mem(priv, base);
5058
mode = iwl4965_read_targ_mem(priv, base + (1 * sizeof(u32)));
5059
num_wraps = iwl4965_read_targ_mem(priv, base + (2 * sizeof(u32)));
5060
next_entry = iwl4965_read_targ_mem(priv, base + (3 * sizeof(u32)));
5061
5062
size = num_wraps ? capacity : next_entry;
5063
5064
/* bail out if nothing in log */
5065
if (size == 0) {
5066
IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
5067
iwl4965_release_nic_access(priv);
5068
return;
5069
}
5070
5071
IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
5072
size, num_wraps);
5073
5074
/* if uCode has wrapped back to top of log, start at the oldest entry,
5075
* i.e the next one that uCode would fill. */
5076
if (num_wraps)
5077
iwl4965_print_event_log(priv, next_entry,
5078
capacity - next_entry, mode);
5079
5080
/* (then/else) start at top of log */
5081
iwl4965_print_event_log(priv, 0, next_entry, mode);
5082
5083
iwl4965_release_nic_access(priv);
5084
}
5085
5086
/**
5087
* iwl4965_irq_handle_error - called for HW or SW error interrupt from card
5088
*/
5089
static void iwl4965_irq_handle_error(struct iwl4965_priv *priv)
5090
{
5091
/* Set the FW error flag -- cleared on iwl4965_down */
5092
set_bit(STATUS_FW_ERROR, &priv->status);
5093
5094
/* Cancel currently queued command. */
5095
clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
5096
5097
#ifdef CONFIG_IWL4965_DEBUG
5098
if (iwl4965_debug_level & IWL_DL_FW_ERRORS) {
5099
iwl4965_dump_nic_error_log(priv);
5100
iwl4965_dump_nic_event_log(priv);
5101
iwl4965_print_rx_config_cmd(&priv->staging_rxon);
5102
}
5103
#endif
5104
5105
wake_up_interruptible(&priv->wait_command_queue);
5106
5107
/* Keep the restart process from trying to send host
5108
* commands by clearing the INIT status bit */
5109
clear_bit(STATUS_READY, &priv->status);
5110
5111
if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5112
IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
5113
"Restarting adapter due to uCode error.\n");
5114
5115
if (iwl4965_is_associated(priv)) {
5116
memcpy(&priv->recovery_rxon, &priv->active_rxon,
5117
sizeof(priv->recovery_rxon));
5118
priv->error_recovering = 1;
5119
}
5120
queue_work(priv->workqueue, &priv->restart);
5121
}
5122
}
5123
5124
static void iwl4965_error_recovery(struct iwl4965_priv *priv)
5125
{
5126
unsigned long flags;
5127
5128
memcpy(&priv->staging_rxon, &priv->recovery_rxon,
5129
sizeof(priv->staging_rxon));
5130
priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5131
iwl4965_commit_rxon(priv);
5132
5133
iwl4965_rxon_add_station(priv, priv->bssid, 1);
5134
5135
spin_lock_irqsave(&priv->lock, flags);
5136
priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
5137
priv->error_recovering = 0;
5138
spin_unlock_irqrestore(&priv->lock, flags);
5139
}
5140
5141
static void iwl4965_irq_tasklet(struct iwl4965_priv *priv)
5142
{
5143
u32 inta, handled = 0;
5144
u32 inta_fh;
5145
unsigned long flags;
5146
#ifdef CONFIG_IWL4965_DEBUG
5147
u32 inta_mask;
5148
#endif
5149
5150
spin_lock_irqsave(&priv->lock, flags);
5151
5152
/* Ack/clear/reset pending uCode interrupts.
5153
* Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
5154
* and will clear only when CSR_FH_INT_STATUS gets cleared. */
5155
inta = iwl4965_read32(priv, CSR_INT);
5156
iwl4965_write32(priv, CSR_INT, inta);
5157
5158
/* Ack/clear/reset pending flow-handler (DMA) interrupts.
5159
* Any new interrupts that happen after this, either while we're
5160
* in this tasklet, or later, will show up in next ISR/tasklet. */
5161
inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
5162
iwl4965_write32(priv, CSR_FH_INT_STATUS, inta_fh);
5163
5164
#ifdef CONFIG_IWL4965_DEBUG
5165
if (iwl4965_debug_level & IWL_DL_ISR) {
5166
/* just for debug */
5167
inta_mask = iwl4965_read32(priv, CSR_INT_MASK);
5168
IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5169
inta, inta_mask, inta_fh);
5170
}
5171
#endif
5172
5173
/* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
5174
* atomic, make sure that inta covers all the interrupts that
5175
* we've discovered, even if FH interrupt came in just after
5176
* reading CSR_INT. */
5177
if (inta_fh & CSR_FH_INT_RX_MASK)
5178
inta |= CSR_INT_BIT_FH_RX;
5179
if (inta_fh & CSR_FH_INT_TX_MASK)
5180
inta |= CSR_INT_BIT_FH_TX;
5181
5182
/* Now service all interrupt bits discovered above. */
5183
if (inta & CSR_INT_BIT_HW_ERR) {
5184
IWL_ERROR("Microcode HW error detected. Restarting.\n");
5185
5186
/* Tell the device to stop sending interrupts */
5187
iwl4965_disable_interrupts(priv);
5188
5189
iwl4965_irq_handle_error(priv);
5190
5191
handled |= CSR_INT_BIT_HW_ERR;
5192
5193
spin_unlock_irqrestore(&priv->lock, flags);
5194
5195
return;
5196
}
5197
5198
#ifdef CONFIG_IWL4965_DEBUG
5199
if (iwl4965_debug_level & (IWL_DL_ISR)) {
5200
/* NIC fires this, but we don't use it, redundant with WAKEUP */
5201
if (inta & CSR_INT_BIT_MAC_CLK_ACTV)
5202
IWL_DEBUG_ISR("Microcode started or stopped.\n");
5203
5204
/* Alive notification via Rx interrupt will do the real work */
5205
if (inta & CSR_INT_BIT_ALIVE)
5206
IWL_DEBUG_ISR("Alive interrupt\n");
5207
}
5208
#endif
5209
/* Safely ignore these bits for debug checks below */
5210
inta &= ~(CSR_INT_BIT_MAC_CLK_ACTV | CSR_INT_BIT_ALIVE);
5211
5212
/* HW RF KILL switch toggled */
5213
if (inta & CSR_INT_BIT_RF_KILL) {
5214
int hw_rf_kill = 0;
5215
if (!(iwl4965_read32(priv, CSR_GP_CNTRL) &
5216
CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
5217
hw_rf_kill = 1;
5218
5219
IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
5220
"RF_KILL bit toggled to %s.\n",
5221
hw_rf_kill ? "disable radio":"enable radio");
5222
5223
/* Queue restart only if RF_KILL switch was set to "kill"
5224
* when we loaded driver, and is now set to "enable".
5225
* After we're Alive, RF_KILL gets handled by
5226
* iwl4965_rx_card_state_notif() */
5227
if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
5228
clear_bit(STATUS_RF_KILL_HW, &priv->status);
5229
queue_work(priv->workqueue, &priv->restart);
5230
}
5231
5232
handled |= CSR_INT_BIT_RF_KILL;
5233
}
5234
5235
/* Chip got too hot and stopped itself */
5236
if (inta & CSR_INT_BIT_CT_KILL) {
5237
IWL_ERROR("Microcode CT kill error detected.\n");
5238
handled |= CSR_INT_BIT_CT_KILL;
5239
}
5240
5241
/* Error detected by uCode */
5242
if (inta & CSR_INT_BIT_SW_ERR) {
5243
IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
5244
inta);
5245
iwl4965_irq_handle_error(priv);
5246
handled |= CSR_INT_BIT_SW_ERR;
5247
}
5248
5249
/* uCode wakes up after power-down sleep */
5250
if (inta & CSR_INT_BIT_WAKEUP) {
5251
IWL_DEBUG_ISR("Wakeup interrupt\n");
5252
iwl4965_rx_queue_update_write_ptr(priv, &priv->rxq);
5253
iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[0]);
5254
iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[1]);
5255
iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[2]);
5256
iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[3]);
5257
iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[4]);
5258
iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[5]);
5259
5260
handled |= CSR_INT_BIT_WAKEUP;
5261
}
5262
5263
/* All uCode command responses, including Tx command responses,
5264
* Rx "responses" (frame-received notification), and other
5265
* notifications from uCode come through here*/
5266
if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
5267
iwl4965_rx_handle(priv);
5268
handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
5269
}
5270
5271
if (inta & CSR_INT_BIT_FH_TX) {
5272
IWL_DEBUG_ISR("Tx interrupt\n");
5273
handled |= CSR_INT_BIT_FH_TX;
5274
}
5275
5276
if (inta & ~handled)
5277
IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
5278
5279
if (inta & ~CSR_INI_SET_MASK) {
5280
IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
5281
inta & ~CSR_INI_SET_MASK);
5282
IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
5283
}
5284
5285
/* Re-enable all interrupts */
5286
iwl4965_enable_interrupts(priv);
5287
5288
#ifdef CONFIG_IWL4965_DEBUG
5289
if (iwl4965_debug_level & (IWL_DL_ISR)) {
5290
inta = iwl4965_read32(priv, CSR_INT);
5291
inta_mask = iwl4965_read32(priv, CSR_INT_MASK);
5292
inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
5293
IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
5294
"flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
5295
}
5296
#endif
5297
spin_unlock_irqrestore(&priv->lock, flags);
5298
}
5299
5300
static irqreturn_t iwl4965_isr(int irq, void *data)
5301
{
5302
struct iwl4965_priv *priv = data;
5303
u32 inta, inta_mask;
5304
u32 inta_fh;
5305
if (!priv)
5306
return IRQ_NONE;
5307
5308
spin_lock(&priv->lock);
5309
5310
/* Disable (but don't clear!) interrupts here to avoid
5311
* back-to-back ISRs and sporadic interrupts from our NIC.
5312
* If we have something to service, the tasklet will re-enable ints.
5313
* If we *don't* have something, we'll re-enable before leaving here. */
5314
inta_mask = iwl4965_read32(priv, CSR_INT_MASK); /* just for debug */
5315
iwl4965_write32(priv, CSR_INT_MASK, 0x00000000);
5316
5317
/* Discover which interrupts are active/pending */
5318
inta = iwl4965_read32(priv, CSR_INT);
5319
inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
5320
5321
/* Ignore interrupt if there's nothing in NIC to service.
5322
* This may be due to IRQ shared with another device,
5323
* or due to sporadic interrupts thrown from our NIC. */
5324
if (!inta && !inta_fh) {
5325
IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
5326
goto none;
5327
}
5328
5329
if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
5330
/* Hardware disappeared. It might have already raised
5331
* an interrupt */
5332
IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
5333
goto unplugged;
5334
}
5335
5336
IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5337
inta, inta_mask, inta_fh);
5338
5339
/* iwl4965_irq_tasklet() will service interrupts and re-enable them */
5340
tasklet_schedule(&priv->irq_tasklet);
5341
5342
unplugged:
5343
spin_unlock(&priv->lock);
5344
return IRQ_HANDLED;
5345
5346
none:
5347
/* re-enable interrupts here since we don't have anything to service. */
5348
iwl4965_enable_interrupts(priv);
5349
spin_unlock(&priv->lock);
5350
return IRQ_NONE;
5351
}
5352
5353
/************************** EEPROM BANDS ****************************
5354
*
5355
* The iwl4965_eeprom_band definitions below provide the mapping from the
5356
* EEPROM contents to the specific channel number supported for each
5357
* band.
5358
*
5359
* For example, iwl4965_priv->eeprom.band_3_channels[4] from the band_3
5360
* definition below maps to physical channel 42 in the 5.2GHz spectrum.
5361
* The specific geography and calibration information for that channel
5362
* is contained in the eeprom map itself.
5363
*
5364
* During init, we copy the eeprom information and channel map
5365
* information into priv->channel_info_24/52 and priv->channel_map_24/52
5366
*
5367
* channel_map_24/52 provides the index in the channel_info array for a
5368
* given channel. We have to have two separate maps as there is channel
5369
* overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
5370
* band_2
5371
*
5372
* A value of 0xff stored in the channel_map indicates that the channel
5373
* is not supported by the hardware at all.
5374
*
5375
* A value of 0xfe in the channel_map indicates that the channel is not
5376
* valid for Tx with the current hardware. This means that
5377
* while the system can tune and receive on a given channel, it may not
5378
* be able to associate or transmit any frames on that
5379
* channel. There is no corresponding channel information for that
5380
* entry.
5381
*
5382
*********************************************************************/
5383
5384
/* 2.4 GHz */
5385
static const u8 iwl4965_eeprom_band_1[14] = {
5386
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
5387
};
5388
5389
/* 5.2 GHz bands */
5390
static const u8 iwl4965_eeprom_band_2[] = { /* 4915-5080MHz */
5391
183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
5392
};
5393
5394
static const u8 iwl4965_eeprom_band_3[] = { /* 5170-5320MHz */
5395
34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
5396
};
5397
5398
static const u8 iwl4965_eeprom_band_4[] = { /* 5500-5700MHz */
5399
100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
5400
};
5401
5402
static const u8 iwl4965_eeprom_band_5[] = { /* 5725-5825MHz */
5403
145, 149, 153, 157, 161, 165
5404
};
5405
5406
static u8 iwl4965_eeprom_band_6[] = { /* 2.4 FAT channel */
5407
1, 2, 3, 4, 5, 6, 7
5408
};
5409
5410
static u8 iwl4965_eeprom_band_7[] = { /* 5.2 FAT channel */
5411
36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157
5412
};
5413
5414
static void iwl4965_init_band_reference(const struct iwl4965_priv *priv,
5415
int band,
5416
int *eeprom_ch_count,
5417
const struct iwl4965_eeprom_channel
5418
**eeprom_ch_info,
5419
const u8 **eeprom_ch_index)
5420
{
5421
switch (band) {
5422
case 1: /* 2.4GHz band */
5423
*eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_1);
5424
*eeprom_ch_info = priv->eeprom.band_1_channels;
5425
*eeprom_ch_index = iwl4965_eeprom_band_1;
5426
break;
5427
case 2: /* 4.9GHz band */
5428
*eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_2);
5429
*eeprom_ch_info = priv->eeprom.band_2_channels;
5430
*eeprom_ch_index = iwl4965_eeprom_band_2;
5431
break;
5432
case 3: /* 5.2GHz band */
5433
*eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_3);
5434
*eeprom_ch_info = priv->eeprom.band_3_channels;
5435
*eeprom_ch_index = iwl4965_eeprom_band_3;
5436
break;
5437
case 4: /* 5.5GHz band */
5438
*eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_4);
5439
*eeprom_ch_info = priv->eeprom.band_4_channels;
5440
*eeprom_ch_index = iwl4965_eeprom_band_4;
5441
break;
5442
case 5: /* 5.7GHz band */
5443
*eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_5);
5444
*eeprom_ch_info = priv->eeprom.band_5_channels;
5445
*eeprom_ch_index = iwl4965_eeprom_band_5;
5446
break;
5447
case 6: /* 2.4GHz FAT channels */
5448
*eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_6);
5449
*eeprom_ch_info = priv->eeprom.band_24_channels;
5450
*eeprom_ch_index = iwl4965_eeprom_band_6;
5451
break;
5452
case 7: /* 5 GHz FAT channels */
5453
*eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_7);
5454
*eeprom_ch_info = priv->eeprom.band_52_channels;
5455
*eeprom_ch_index = iwl4965_eeprom_band_7;
5456
break;
5457
default:
5458
BUG();
5459
return;
5460
}
5461
}
5462
5463
/**
5464
* iwl4965_get_channel_info - Find driver's private channel info
5465
*
5466
* Based on band and channel number.
5467
*/
5468
const struct iwl4965_channel_info *iwl4965_get_channel_info(const struct iwl4965_priv *priv,
5469
int phymode, u16 channel)
5470
{
5471
int i;
5472
5473
switch (phymode) {
5474
case MODE_IEEE80211A:
5475
for (i = 14; i < priv->channel_count; i++) {
5476
if (priv->channel_info[i].channel == channel)
5477
return &priv->channel_info[i];
5478
}
5479
break;
5480
5481
case MODE_IEEE80211B:
5482
case MODE_IEEE80211G:
5483
if (channel >= 1 && channel <= 14)
5484
return &priv->channel_info[channel - 1];
5485
break;
5486
5487
}
5488
5489
return NULL;
5490
}
5491
5492
#define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
5493
? # x " " : "")
5494
5495
/**
5496
* iwl4965_init_channel_map - Set up driver's info for all possible channels
5497
*/
5498
static int iwl4965_init_channel_map(struct iwl4965_priv *priv)
5499
{
5500
int eeprom_ch_count = 0;
5501
const u8 *eeprom_ch_index = NULL;
5502
const struct iwl4965_eeprom_channel *eeprom_ch_info = NULL;
5503
int band, ch;
5504
struct iwl4965_channel_info *ch_info;
5505
5506
if (priv->channel_count) {
5507
IWL_DEBUG_INFO("Channel map already initialized.\n");
5508
return 0;
5509
}
5510
5511
if (priv->eeprom.version < 0x2f) {
5512
IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
5513
priv->eeprom.version);
5514
return -EINVAL;
5515
}
5516
5517
IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
5518
5519
priv->channel_count =
5520
ARRAY_SIZE(iwl4965_eeprom_band_1) +
5521
ARRAY_SIZE(iwl4965_eeprom_band_2) +
5522
ARRAY_SIZE(iwl4965_eeprom_band_3) +
5523
ARRAY_SIZE(iwl4965_eeprom_band_4) +
5524
ARRAY_SIZE(iwl4965_eeprom_band_5);
5525
5526
IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
5527
5528
priv->channel_info = kzalloc(sizeof(struct iwl4965_channel_info) *
5529
priv->channel_count, GFP_KERNEL);
5530
if (!priv->channel_info) {
5531
IWL_ERROR("Could not allocate channel_info\n");
5532
priv->channel_count = 0;
5533
return -ENOMEM;
5534
}
5535
5536
ch_info = priv->channel_info;
5537
5538
/* Loop through the 5 EEPROM bands adding them in order to the
5539
* channel map we maintain (that contains additional information than
5540
* what just in the EEPROM) */
5541
for (band = 1; band <= 5; band++) {
5542
5543
iwl4965_init_band_reference(priv, band, &eeprom_ch_count,
5544
&eeprom_ch_info, &eeprom_ch_index);
5545
5546
/* Loop through each band adding each of the channels */
5547
for (ch = 0; ch < eeprom_ch_count; ch++) {
5548
ch_info->channel = eeprom_ch_index[ch];
5549
ch_info->phymode = (band == 1) ? MODE_IEEE80211B :
5550
MODE_IEEE80211A;
5551
5552
/* permanently store EEPROM's channel regulatory flags
5553
* and max power in channel info database. */
5554
ch_info->eeprom = eeprom_ch_info[ch];
5555
5556
/* Copy the run-time flags so they are there even on
5557
* invalid channels */
5558
ch_info->flags = eeprom_ch_info[ch].flags;
5559
5560
if (!(is_channel_valid(ch_info))) {
5561
IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
5562
"No traffic\n",
5563
ch_info->channel,
5564
ch_info->flags,
5565
is_channel_a_band(ch_info) ?
5566
"5.2" : "2.4");
5567
ch_info++;
5568
continue;
5569
}
5570
5571
/* Initialize regulatory-based run-time data */
5572
ch_info->max_power_avg = ch_info->curr_txpow =
5573
eeprom_ch_info[ch].max_power_avg;
5574
ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
5575
ch_info->min_power = 0;
5576
5577
IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
5578
" %ddBm): Ad-Hoc %ssupported\n",
5579
ch_info->channel,
5580
is_channel_a_band(ch_info) ?
5581
"5.2" : "2.4",
5582
CHECK_AND_PRINT(IBSS),
5583
CHECK_AND_PRINT(ACTIVE),
5584
CHECK_AND_PRINT(RADAR),
5585
CHECK_AND_PRINT(WIDE),
5586
CHECK_AND_PRINT(NARROW),
5587
CHECK_AND_PRINT(DFS),
5588
eeprom_ch_info[ch].flags,
5589
eeprom_ch_info[ch].max_power_avg,
5590
((eeprom_ch_info[ch].
5591
flags & EEPROM_CHANNEL_IBSS)
5592
&& !(eeprom_ch_info[ch].
5593
flags & EEPROM_CHANNEL_RADAR))
5594
? "" : "not ");
5595
5596
/* Set the user_txpower_limit to the highest power
5597
* supported by any channel */
5598
if (eeprom_ch_info[ch].max_power_avg >
5599
priv->user_txpower_limit)
5600
priv->user_txpower_limit =
5601
eeprom_ch_info[ch].max_power_avg;
5602
5603
ch_info++;
5604
}
5605
}
5606
5607
/* Two additional EEPROM bands for 2.4 and 5 GHz FAT channels */
5608
for (band = 6; band <= 7; band++) {
5609
int phymode;
5610
u8 fat_extension_chan;
5611
5612
iwl4965_init_band_reference(priv, band, &eeprom_ch_count,
5613
&eeprom_ch_info, &eeprom_ch_index);
5614
5615
/* EEPROM band 6 is 2.4, band 7 is 5 GHz */
5616
phymode = (band == 6) ? MODE_IEEE80211B : MODE_IEEE80211A;
5617
5618
/* Loop through each band adding each of the channels */
5619
for (ch = 0; ch < eeprom_ch_count; ch++) {
5620
5621
if ((band == 6) &&
5622
((eeprom_ch_index[ch] == 5) ||
5623
(eeprom_ch_index[ch] == 6) ||
5624
(eeprom_ch_index[ch] == 7)))
5625
fat_extension_chan = HT_IE_EXT_CHANNEL_MAX;
5626
else
5627
fat_extension_chan = HT_IE_EXT_CHANNEL_ABOVE;
5628
5629
/* Set up driver's info for lower half */
5630
iwl4965_set_fat_chan_info(priv, phymode,
5631
eeprom_ch_index[ch],
5632
&(eeprom_ch_info[ch]),
5633
fat_extension_chan);
5634
5635
/* Set up driver's info for upper half */
5636
iwl4965_set_fat_chan_info(priv, phymode,
5637
(eeprom_ch_index[ch] + 4),
5638
&(eeprom_ch_info[ch]),
5639
HT_IE_EXT_CHANNEL_BELOW);
5640
}
5641
}
5642
5643
return 0;
5644
}
5645
5646
/* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
5647
* sending probe req. This should be set long enough to hear probe responses
5648
* from more than one AP. */
5649
#define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
5650
#define IWL_ACTIVE_DWELL_TIME_52 (10)
5651
5652
/* For faster active scanning, scan will move to the next channel if fewer than
5653
* PLCP_QUIET_THRESH packets are heard on this channel within
5654
* ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
5655
* time if it's a quiet channel (nothing responded to our probe, and there's
5656
* no other traffic).
5657
* Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
5658
#define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
5659
#define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
5660
5661
/* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
5662
* Must be set longer than active dwell time.
5663
* For the most reliable scan, set > AP beacon interval (typically 100msec). */
5664
#define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
5665
#define IWL_PASSIVE_DWELL_TIME_52 (10)
5666
#define IWL_PASSIVE_DWELL_BASE (100)
5667
#define IWL_CHANNEL_TUNE_TIME 5
5668
5669
static inline u16 iwl4965_get_active_dwell_time(struct iwl4965_priv *priv, int phymode)
5670
{
5671
if (phymode == MODE_IEEE80211A)
5672
return IWL_ACTIVE_DWELL_TIME_52;
5673
else
5674
return IWL_ACTIVE_DWELL_TIME_24;
5675
}
5676
5677
static u16 iwl4965_get_passive_dwell_time(struct iwl4965_priv *priv, int phymode)
5678
{
5679
u16 active = iwl4965_get_active_dwell_time(priv, phymode);
5680
u16 passive = (phymode != MODE_IEEE80211A) ?
5681
IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
5682
IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
5683
5684
if (iwl4965_is_associated(priv)) {
5685
/* If we're associated, we clamp the maximum passive
5686
* dwell time to be 98% of the beacon interval (minus
5687
* 2 * channel tune time) */
5688
passive = priv->beacon_int;
5689
if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
5690
passive = IWL_PASSIVE_DWELL_BASE;
5691
passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
5692
}
5693
5694
if (passive <= active)
5695
passive = active + 1;
5696
5697
return passive;
5698
}
5699
5700
static int iwl4965_get_channels_for_scan(struct iwl4965_priv *priv, int phymode,
5701
u8 is_active, u8 direct_mask,
5702
struct iwl4965_scan_channel *scan_ch)
5703
{
5704
const struct ieee80211_channel *channels = NULL;
5705
const struct ieee80211_hw_mode *hw_mode;
5706
const struct iwl4965_channel_info *ch_info;
5707
u16 passive_dwell = 0;
5708
u16 active_dwell = 0;
5709
int added, i;
5710
5711
hw_mode = iwl4965_get_hw_mode(priv, phymode);
5712
if (!hw_mode)
5713
return 0;
5714
5715
channels = hw_mode->channels;
5716
5717
active_dwell = iwl4965_get_active_dwell_time(priv, phymode);
5718
passive_dwell = iwl4965_get_passive_dwell_time(priv, phymode);
5719
5720
for (i = 0, added = 0; i < hw_mode->num_channels; i++) {
5721
if (channels[i].chan ==
5722
le16_to_cpu(priv->active_rxon.channel)) {
5723
if (iwl4965_is_associated(priv)) {
5724
IWL_DEBUG_SCAN
5725
("Skipping current channel %d\n",
5726
le16_to_cpu(priv->active_rxon.channel));
5727
continue;
5728
}
5729
} else if (priv->only_active_channel)
5730
continue;
5731
5732
scan_ch->channel = channels[i].chan;
5733
5734
ch_info = iwl4965_get_channel_info(priv, phymode,
5735
scan_ch->channel);
5736
if (!is_channel_valid(ch_info)) {
5737
IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
5738
scan_ch->channel);
5739
continue;
5740
}
5741
5742
if (!is_active || is_channel_passive(ch_info) ||
5743
!(channels[i].flag & IEEE80211_CHAN_W_ACTIVE_SCAN))
5744
scan_ch->type = 0; /* passive */
5745
else
5746
scan_ch->type = 1; /* active */
5747
5748
if (scan_ch->type & 1)
5749
scan_ch->type |= (direct_mask << 1);
5750
5751
if (is_channel_narrow(ch_info))
5752
scan_ch->type |= (1 << 7);
5753
5754
scan_ch->active_dwell = cpu_to_le16(active_dwell);
5755
scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
5756
5757
/* Set txpower levels to defaults */
5758
scan_ch->tpc.dsp_atten = 110;
5759
/* scan_pwr_info->tpc.dsp_atten; */
5760
5761
/*scan_pwr_info->tpc.tx_gain; */
5762
if (phymode == MODE_IEEE80211A)
5763
scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
5764
else {
5765
scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
5766
/* NOTE: if we were doing 6Mb OFDM for scans we'd use
5767
* power level:
5768
* scan_ch->tpc.tx_gain = ((1<<5) | (2 << 3)) | 3;
5769
*/
5770
}
5771
5772
IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
5773
scan_ch->channel,
5774
(scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
5775
(scan_ch->type & 1) ?
5776
active_dwell : passive_dwell);
5777
5778
scan_ch++;
5779
added++;
5780
}
5781
5782
IWL_DEBUG_SCAN("total channels to scan %d \n", added);
5783
return added;
5784
}
5785
5786
static void iwl4965_reset_channel_flag(struct iwl4965_priv *priv)
5787
{
5788
int i, j;
5789
for (i = 0; i < 3; i++) {
5790
struct ieee80211_hw_mode *hw_mode = (void *)&priv->modes[i];
5791
for (j = 0; j < hw_mode->num_channels; j++)
5792
hw_mode->channels[j].flag = hw_mode->channels[j].val;
5793
}
5794
}
5795
5796
static void iwl4965_init_hw_rates(struct iwl4965_priv *priv,
5797
struct ieee80211_rate *rates)
5798
{
5799
int i;
5800
5801
for (i = 0; i < IWL_RATE_COUNT; i++) {
5802
rates[i].rate = iwl4965_rates[i].ieee * 5;
5803
rates[i].val = i; /* Rate scaling will work on indexes */
5804
rates[i].val2 = i;
5805
rates[i].flags = IEEE80211_RATE_SUPPORTED;
5806
/* Only OFDM have the bits-per-symbol set */
5807
if ((i <= IWL_LAST_OFDM_RATE) && (i >= IWL_FIRST_OFDM_RATE))
5808
rates[i].flags |= IEEE80211_RATE_OFDM;
5809
else {
5810
/*
5811
* If CCK 1M then set rate flag to CCK else CCK_2
5812
* which is CCK | PREAMBLE2
5813
*/
5814
rates[i].flags |= (iwl4965_rates[i].plcp == 10) ?
5815
IEEE80211_RATE_CCK : IEEE80211_RATE_CCK_2;
5816
}
5817
5818
/* Set up which ones are basic rates... */
5819
if (IWL_BASIC_RATES_MASK & (1 << i))
5820
rates[i].flags |= IEEE80211_RATE_BASIC;
5821
}
5822
}
5823
5824
/**
5825
* iwl4965_init_geos - Initialize mac80211's geo/channel info based from eeprom
5826
*/
5827
static int iwl4965_init_geos(struct iwl4965_priv *priv)
5828
{
5829
struct iwl4965_channel_info *ch;
5830
struct ieee80211_hw_mode *modes;
5831
struct ieee80211_channel *channels;
5832
struct ieee80211_channel *geo_ch;
5833
struct ieee80211_rate *rates;
5834
int i = 0;
5835
enum {
5836
A = 0,
5837
B = 1,
5838
G = 2,
5839
A_11N = 3,
5840
G_11N = 4,
5841
};
5842
int mode_count = 5;
5843
5844
if (priv->modes) {
5845
IWL_DEBUG_INFO("Geography modes already initialized.\n");
5846
set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5847
return 0;
5848
}
5849
5850
modes = kzalloc(sizeof(struct ieee80211_hw_mode) * mode_count,
5851
GFP_KERNEL);
5852
if (!modes)
5853
return -ENOMEM;
5854
5855
channels = kzalloc(sizeof(struct ieee80211_channel) *
5856
priv->channel_count, GFP_KERNEL);
5857
if (!channels) {
5858
kfree(modes);
5859
return -ENOMEM;
5860
}
5861
5862
rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_MAX_RATES + 1)),
5863
GFP_KERNEL);
5864
if (!rates) {
5865
kfree(modes);
5866
kfree(channels);
5867
return -ENOMEM;
5868
}
5869
5870
/* 0 = 802.11a
5871
* 1 = 802.11b
5872
* 2 = 802.11g
5873
*/
5874
5875
/* 5.2GHz channels start after the 2.4GHz channels */
5876
modes[A].mode = MODE_IEEE80211A;
5877
modes[A].channels = &channels[ARRAY_SIZE(iwl4965_eeprom_band_1)];
5878
modes[A].rates = rates;
5879
modes[A].num_rates = 8; /* just OFDM */
5880
modes[A].rates = &rates[4];
5881
modes[A].num_channels = 0;
5882
5883
modes[B].mode = MODE_IEEE80211B;
5884
modes[B].channels = channels;
5885
modes[B].rates = rates;
5886
modes[B].num_rates = 4; /* just CCK */
5887
modes[B].num_channels = 0;
5888
5889
modes[G].mode = MODE_IEEE80211G;
5890
modes[G].channels = channels;
5891
modes[G].rates = rates;
5892
modes[G].num_rates = 12; /* OFDM & CCK */
5893
modes[G].num_channels = 0;
5894
5895
modes[G_11N].mode = MODE_IEEE80211G;
5896
modes[G_11N].channels = channels;
5897
modes[G_11N].num_rates = 13; /* OFDM & CCK */
5898
modes[G_11N].rates = rates;
5899
modes[G_11N].num_channels = 0;
5900
5901
modes[A_11N].mode = MODE_IEEE80211A;
5902
modes[A_11N].channels = &channels[ARRAY_SIZE(iwl4965_eeprom_band_1)];
5903
modes[A_11N].rates = &rates[4];
5904
modes[A_11N].num_rates = 9; /* just OFDM */
5905
modes[A_11N].num_channels = 0;
5906
5907
priv->ieee_channels = channels;
5908
priv->ieee_rates = rates;
5909
5910
iwl4965_init_hw_rates(priv, rates);
5911
5912
for (i = 0, geo_ch = channels; i < priv->channel_count; i++) {
5913
ch = &priv->channel_info[i];
5914
5915
if (!is_channel_valid(ch)) {
5916
IWL_DEBUG_INFO("Channel %d [%sGHz] is restricted -- "
5917
"skipping.\n",
5918
ch->channel, is_channel_a_band(ch) ?
5919
"5.2" : "2.4");
5920
continue;
5921
}
5922
5923
if (is_channel_a_band(ch)) {
5924
geo_ch = &modes[A].channels[modes[A].num_channels++];
5925
modes[A_11N].num_channels++;
5926
} else {
5927
geo_ch = &modes[B].channels[modes[B].num_channels++];
5928
modes[G].num_channels++;
5929
modes[G_11N].num_channels++;
5930
}
5931
5932
geo_ch->freq = ieee80211chan2mhz(ch->channel);
5933
geo_ch->chan = ch->channel;
5934
geo_ch->power_level = ch->max_power_avg;
5935
geo_ch->antenna_max = 0xff;
5936
5937
if (is_channel_valid(ch)) {
5938
geo_ch->flag = IEEE80211_CHAN_W_SCAN;
5939
if (ch->flags & EEPROM_CHANNEL_IBSS)
5940
geo_ch->flag |= IEEE80211_CHAN_W_IBSS;
5941
5942
if (ch->flags & EEPROM_CHANNEL_ACTIVE)
5943
geo_ch->flag |= IEEE80211_CHAN_W_ACTIVE_SCAN;
5944
5945
if (ch->flags & EEPROM_CHANNEL_RADAR)
5946
geo_ch->flag |= IEEE80211_CHAN_W_RADAR_DETECT;
5947
5948
if (ch->max_power_avg > priv->max_channel_txpower_limit)
5949
priv->max_channel_txpower_limit =
5950
ch->max_power_avg;
5951
}
5952
5953
geo_ch->val = geo_ch->flag;
5954
}
5955
5956
if ((modes[A].num_channels == 0) && priv->is_abg) {
5957
printk(KERN_INFO DRV_NAME
5958
": Incorrectly detected BG card as ABG. Please send "
5959
"your PCI ID 0x%04X:0x%04X to maintainer.\n",
5960
priv->pci_dev->device, priv->pci_dev->subsystem_device);
5961
priv->is_abg = 0;
5962
}
5963
5964
printk(KERN_INFO DRV_NAME
5965
": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5966
modes[G].num_channels, modes[A].num_channels);
5967
5968
/*
5969
* NOTE: We register these in preference of order -- the
5970
* stack doesn't currently (as of 7.0.6 / Apr 24 '07) pick
5971
* a phymode based on rates or AP capabilities but seems to
5972
* configure it purely on if the channel being configured
5973
* is supported by a mode -- and the first match is taken
5974
*/
5975
5976
if (modes[G].num_channels)
5977
iwlwifi_iwlwifi_ieee80211_register_hwmode(priv->hw, &modes[G]);
5978
if (modes[B].num_channels)
5979
iwlwifi_iwlwifi_ieee80211_register_hwmode(priv->hw, &modes[B]);
5980
if (modes[A].num_channels)
5981
iwlwifi_iwlwifi_ieee80211_register_hwmode(priv->hw, &modes[A]);
5982
5983
priv->modes = modes;
5984
set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5985
5986
return 0;
5987
}
5988
5989
/******************************************************************************
5990
*
5991
* uCode download functions
5992
*
5993
******************************************************************************/
5994
5995
static void iwl4965_dealloc_ucode_pci(struct iwl4965_priv *priv)
5996
{
5997
iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
5998
iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
5999
iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
6000
iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
6001
iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
6002
iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
6003
}
6004
6005
/**
6006
* iwl4965_verify_inst_full - verify runtime uCode image in card vs. host,
6007
* looking at all data.
6008
*/
6009
static int iwl4965_verify_inst_full(struct iwl4965_priv *priv, __le32 * image,
6010
u32 len)
6011
{
6012
u32 val;
6013
u32 save_len = len;
6014
int rc = 0;
6015
u32 errcnt;
6016
6017
IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
6018
6019
rc = iwl4965_grab_nic_access(priv);
6020
if (rc)
6021
return rc;
6022
6023
iwl4965_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
6024
6025
errcnt = 0;
6026
for (; len > 0; len -= sizeof(u32), image++) {
6027
/* read data comes through single port, auto-incr addr */
6028
/* NOTE: Use the debugless read so we don't flood kernel log
6029
* if IWL_DL_IO is set */
6030
val = _iwl4965_read_direct32(priv, HBUS_TARG_MEM_RDAT);
6031
if (val != le32_to_cpu(*image)) {
6032
IWL_ERROR("uCode INST section is invalid at "
6033
"offset 0x%x, is 0x%x, s/b 0x%x\n",
6034
save_len - len, val, le32_to_cpu(*image));
6035
rc = -EIO;
6036
errcnt++;
6037
if (errcnt >= 20)
6038
break;
6039
}
6040
}
6041
6042
iwl4965_release_nic_access(priv);
6043
6044
if (!errcnt)
6045
IWL_DEBUG_INFO
6046
("ucode image in INSTRUCTION memory is good\n");
6047
6048
return rc;
6049
}
6050
6051
6052
/**
6053
* iwl4965_verify_inst_sparse - verify runtime uCode image in card vs. host,
6054
* using sample data 100 bytes apart. If these sample points are good,
6055
* it's a pretty good bet that everything between them is good, too.
6056
*/
6057
static int iwl4965_verify_inst_sparse(struct iwl4965_priv *priv, __le32 *image, u32 len)
6058
{
6059
u32 val;
6060
int rc = 0;
6061
u32 errcnt = 0;
6062
u32 i;
6063
6064
IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
6065
6066
rc = iwl4965_grab_nic_access(priv);
6067
if (rc)
6068
return rc;
6069
6070
for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
6071
/* read data comes through single port, auto-incr addr */
6072
/* NOTE: Use the debugless read so we don't flood kernel log
6073
* if IWL_DL_IO is set */
6074
iwl4965_write_direct32(priv, HBUS_TARG_MEM_RADDR,
6075
i + RTC_INST_LOWER_BOUND);
6076
val = _iwl4965_read_direct32(priv, HBUS_TARG_MEM_RDAT);
6077
if (val != le32_to_cpu(*image)) {
6078
#if 0 /* Enable this if you want to see details */
6079
IWL_ERROR("uCode INST section is invalid at "
6080
"offset 0x%x, is 0x%x, s/b 0x%x\n",
6081
i, val, *image);
6082
#endif
6083
rc = -EIO;
6084
errcnt++;
6085
if (errcnt >= 3)
6086
break;
6087
}
6088
}
6089
6090
iwl4965_release_nic_access(priv);
6091
6092
return rc;
6093
}
6094
6095
6096
/**
6097
* iwl4965_verify_ucode - determine which instruction image is in SRAM,
6098
* and verify its contents
6099
*/
6100
static int iwl4965_verify_ucode(struct iwl4965_priv *priv)
6101
{
6102
__le32 *image;
6103
u32 len;
6104
int rc = 0;
6105
6106
/* Try bootstrap */
6107
image = (__le32 *)priv->ucode_boot.v_addr;
6108
len = priv->ucode_boot.len;
6109
rc = iwl4965_verify_inst_sparse(priv, image, len);
6110
if (rc == 0) {
6111
IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
6112
return 0;
6113
}
6114
6115
/* Try initialize */
6116
image = (__le32 *)priv->ucode_init.v_addr;
6117
len = priv->ucode_init.len;
6118
rc = iwl4965_verify_inst_sparse(priv, image, len);
6119
if (rc == 0) {
6120
IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
6121
return 0;
6122
}
6123
6124
/* Try runtime/protocol */
6125
image = (__le32 *)priv->ucode_code.v_addr;
6126
len = priv->ucode_code.len;
6127
rc = iwl4965_verify_inst_sparse(priv, image, len);
6128
if (rc == 0) {
6129
IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
6130
return 0;
6131
}
6132
6133
IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
6134
6135
/* Since nothing seems to match, show first several data entries in
6136
* instruction SRAM, so maybe visual inspection will give a clue.
6137
* Selection of bootstrap image (vs. other images) is arbitrary. */
6138
image = (__le32 *)priv->ucode_boot.v_addr;
6139
len = priv->ucode_boot.len;
6140
rc = iwl4965_verify_inst_full(priv, image, len);
6141
6142
return rc;
6143
}
6144
6145
6146
/* check contents of special bootstrap uCode SRAM */
6147
static int iwl4965_verify_bsm(struct iwl4965_priv *priv)
6148
{
6149
__le32 *image = priv->ucode_boot.v_addr;
6150
u32 len = priv->ucode_boot.len;
6151
u32 reg;
6152
u32 val;
6153
6154
IWL_DEBUG_INFO("Begin verify bsm\n");
6155
6156
/* verify BSM SRAM contents */
6157
val = iwl4965_read_prph(priv, BSM_WR_DWCOUNT_REG);
6158
for (reg = BSM_SRAM_LOWER_BOUND;
6159
reg < BSM_SRAM_LOWER_BOUND + len;
6160
reg += sizeof(u32), image ++) {
6161
val = iwl4965_read_prph(priv, reg);
6162
if (val != le32_to_cpu(*image)) {
6163
IWL_ERROR("BSM uCode verification failed at "
6164
"addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
6165
BSM_SRAM_LOWER_BOUND,
6166
reg - BSM_SRAM_LOWER_BOUND, len,
6167
val, le32_to_cpu(*image));
6168
return -EIO;
6169
}
6170
}
6171
6172
IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
6173
6174
return 0;
6175
}
6176
6177
/**
6178
* iwl4965_load_bsm - Load bootstrap instructions
6179
*
6180
* BSM operation:
6181
*
6182
* The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
6183
* in special SRAM that does not power down during RFKILL. When powering back
6184
* up after power-saving sleeps (or during initial uCode load), the BSM loads
6185
* the bootstrap program into the on-board processor, and starts it.
6186
*
6187
* The bootstrap program loads (via DMA) instructions and data for a new
6188
* program from host DRAM locations indicated by the host driver in the
6189
* BSM_DRAM_* registers. Once the new program is loaded, it starts
6190
* automatically.
6191
*
6192
* When initializing the NIC, the host driver points the BSM to the
6193
* "initialize" uCode image. This uCode sets up some internal data, then
6194
* notifies host via "initialize alive" that it is complete.
6195
*
6196
* The host then replaces the BSM_DRAM_* pointer values to point to the
6197
* normal runtime uCode instructions and a backup uCode data cache buffer
6198
* (filled initially with starting data values for the on-board processor),
6199
* then triggers the "initialize" uCode to load and launch the runtime uCode,
6200
* which begins normal operation.
6201
*
6202
* When doing a power-save shutdown, runtime uCode saves data SRAM into
6203
* the backup data cache in DRAM before SRAM is powered down.
6204
*
6205
* When powering back up, the BSM loads the bootstrap program. This reloads
6206
* the runtime uCode instructions and the backup data cache into SRAM,
6207
* and re-launches the runtime uCode from where it left off.
6208
*/
6209
static int iwl4965_load_bsm(struct iwl4965_priv *priv)
6210
{
6211
__le32 *image = priv->ucode_boot.v_addr;
6212
u32 len = priv->ucode_boot.len;
6213
dma_addr_t pinst;
6214
dma_addr_t pdata;
6215
u32 inst_len;
6216
u32 data_len;
6217
int rc;
6218
int i;
6219
u32 done;
6220
u32 reg_offset;
6221
6222
IWL_DEBUG_INFO("Begin load bsm\n");
6223
6224
/* make sure bootstrap program is no larger than BSM's SRAM size */
6225
if (len > IWL_MAX_BSM_SIZE)
6226
return -EINVAL;
6227
6228
/* Tell bootstrap uCode where to find the "Initialize" uCode
6229
* in host DRAM ... host DRAM physical address bits 35:4 for 4965.
6230
* NOTE: iwl4965_initialize_alive_start() will replace these values,
6231
* after the "initialize" uCode has run, to point to
6232
* runtime/protocol instructions and backup data cache. */
6233
pinst = priv->ucode_init.p_addr >> 4;
6234
pdata = priv->ucode_init_data.p_addr >> 4;
6235
inst_len = priv->ucode_init.len;
6236
data_len = priv->ucode_init_data.len;
6237
6238
rc = iwl4965_grab_nic_access(priv);
6239
if (rc)
6240
return rc;
6241
6242
iwl4965_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
6243
iwl4965_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6244
iwl4965_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
6245
iwl4965_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
6246
6247
/* Fill BSM memory with bootstrap instructions */
6248
for (reg_offset = BSM_SRAM_LOWER_BOUND;
6249
reg_offset < BSM_SRAM_LOWER_BOUND + len;
6250
reg_offset += sizeof(u32), image++)
6251
_iwl4965_write_prph(priv, reg_offset,
6252
le32_to_cpu(*image));
6253
6254
rc = iwl4965_verify_bsm(priv);
6255
if (rc) {
6256
iwl4965_release_nic_access(priv);
6257
return rc;
6258
}
6259
6260
/* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
6261
iwl4965_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
6262
iwl4965_write_prph(priv, BSM_WR_MEM_DST_REG,
6263
RTC_INST_LOWER_BOUND);
6264
iwl4965_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
6265
6266
/* Load bootstrap code into instruction SRAM now,
6267
* to prepare to load "initialize" uCode */
6268
iwl4965_write_prph(priv, BSM_WR_CTRL_REG,
6269
BSM_WR_CTRL_REG_BIT_START);
6270
6271
/* Wait for load of bootstrap uCode to finish */
6272
for (i = 0; i < 100; i++) {
6273
done = iwl4965_read_prph(priv, BSM_WR_CTRL_REG);
6274
if (!(done & BSM_WR_CTRL_REG_BIT_START))
6275
break;
6276
udelay(10);
6277
}
6278
if (i < 100)
6279
IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
6280
else {
6281
IWL_ERROR("BSM write did not complete!\n");
6282
return -EIO;
6283
}
6284
6285
/* Enable future boot loads whenever power management unit triggers it
6286
* (e.g. when powering back up after power-save shutdown) */
6287
iwl4965_write_prph(priv, BSM_WR_CTRL_REG,
6288
BSM_WR_CTRL_REG_BIT_START_EN);
6289
6290
iwl4965_release_nic_access(priv);
6291
6292
return 0;
6293
}
6294
6295
static void iwl4965_nic_start(struct iwl4965_priv *priv)
6296
{
6297
/* Remove all resets to allow NIC to operate */
6298
iwl4965_write32(priv, CSR_RESET, 0);
6299
}
6300
6301
6302
/**
6303
* iwl4965_read_ucode - Read uCode images from disk file.
6304
*
6305
* Copy into buffers for card to fetch via bus-mastering
6306
*/
6307
static int iwl4965_read_ucode(struct iwl4965_priv *priv)
6308
{
6309
struct iwl4965_ucode *ucode;
6310
int ret;
6311
const struct firmware *ucode_raw;
6312
const char *name = "iwlwifi-4965" IWL4965_UCODE_API ".ucode";
6313
u8 *src;
6314
size_t len;
6315
u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
6316
6317
/* Ask kernel firmware_class module to get the boot firmware off disk.
6318
* request_firmware() is synchronous, file is in memory on return. */
6319
ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
6320
if (ret < 0) {
6321
IWL_ERROR("%s firmware file req failed: Reason %d\n",
6322
name, ret);
6323
goto error;
6324
}
6325
6326
IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
6327
name, ucode_raw->size);
6328
6329
/* Make sure that we got at least our header! */
6330
if (ucode_raw->size < sizeof(*ucode)) {
6331
IWL_ERROR("File size way too small!\n");
6332
ret = -EINVAL;
6333
goto err_release;
6334
}
6335
6336
/* Data from ucode file: header followed by uCode images */
6337
ucode = (void *)ucode_raw->data;
6338
6339
ver = le32_to_cpu(ucode->ver);
6340
inst_size = le32_to_cpu(ucode->inst_size);
6341
data_size = le32_to_cpu(ucode->data_size);
6342
init_size = le32_to_cpu(ucode->init_size);
6343
init_data_size = le32_to_cpu(ucode->init_data_size);
6344
boot_size = le32_to_cpu(ucode->boot_size);
6345
6346
IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
6347
IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
6348
inst_size);
6349
IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
6350
data_size);
6351
IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
6352
init_size);
6353
IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
6354
init_data_size);
6355
IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
6356
boot_size);
6357
6358
/* Verify size of file vs. image size info in file's header */
6359
if (ucode_raw->size < sizeof(*ucode) +
6360
inst_size + data_size + init_size +
6361
init_data_size + boot_size) {
6362
6363
IWL_DEBUG_INFO("uCode file size %d too small\n",
6364
(int)ucode_raw->size);
6365
ret = -EINVAL;
6366
goto err_release;
6367
}
6368
6369
/* Verify that uCode images will fit in card's SRAM */
6370
if (inst_size > IWL_MAX_INST_SIZE) {
6371
IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
6372
inst_size);
6373
ret = -EINVAL;
6374
goto err_release;
6375
}
6376
6377
if (data_size > IWL_MAX_DATA_SIZE) {
6378
IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
6379
data_size);
6380
ret = -EINVAL;
6381
goto err_release;
6382
}
6383
if (init_size > IWL_MAX_INST_SIZE) {
6384
IWL_DEBUG_INFO
6385
("uCode init instr len %d too large to fit in\n",
6386
init_size);
6387
ret = -EINVAL;
6388
goto err_release;
6389
}
6390
if (init_data_size > IWL_MAX_DATA_SIZE) {
6391
IWL_DEBUG_INFO
6392
("uCode init data len %d too large to fit in\n",
6393
init_data_size);
6394
ret = -EINVAL;
6395
goto err_release;
6396
}
6397
if (boot_size > IWL_MAX_BSM_SIZE) {
6398
IWL_DEBUG_INFO
6399
("uCode boot instr len %d too large to fit in\n",
6400
boot_size);
6401
ret = -EINVAL;
6402
goto err_release;
6403
}
6404
6405
/* Allocate ucode buffers for card's bus-master loading ... */
6406
6407
/* Runtime instructions and 2 copies of data:
6408
* 1) unmodified from disk
6409
* 2) backup cache for save/restore during power-downs */
6410
priv->ucode_code.len = inst_size;
6411
iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
6412
6413
priv->ucode_data.len = data_size;
6414
iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
6415
6416
priv->ucode_data_backup.len = data_size;
6417
iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
6418
6419
/* Initialization instructions and data */
6420
if (init_size && init_data_size) {
6421
priv->ucode_init.len = init_size;
6422
iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
6423
6424
priv->ucode_init_data.len = init_data_size;
6425
iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
6426
6427
if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
6428
goto err_pci_alloc;
6429
}
6430
6431
/* Bootstrap (instructions only, no data) */
6432
if (boot_size) {
6433
priv->ucode_boot.len = boot_size;
6434
iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
6435
6436
if (!priv->ucode_boot.v_addr)
6437
goto err_pci_alloc;
6438
}
6439
6440
/* Copy images into buffers for card's bus-master reads ... */
6441
6442
/* Runtime instructions (first block of data in file) */
6443
src = &ucode->data[0];
6444
len = priv->ucode_code.len;
6445
IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
6446
memcpy(priv->ucode_code.v_addr, src, len);
6447
IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
6448
priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
6449
6450
/* Runtime data (2nd block)
6451
* NOTE: Copy into backup buffer will be done in iwl4965_up() */
6452
src = &ucode->data[inst_size];
6453
len = priv->ucode_data.len;
6454
IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
6455
memcpy(priv->ucode_data.v_addr, src, len);
6456
memcpy(priv->ucode_data_backup.v_addr, src, len);
6457
6458
/* Initialization instructions (3rd block) */
6459
if (init_size) {
6460
src = &ucode->data[inst_size + data_size];
6461
len = priv->ucode_init.len;
6462
IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
6463
len);
6464
memcpy(priv->ucode_init.v_addr, src, len);
6465
}
6466
6467
/* Initialization data (4th block) */
6468
if (init_data_size) {
6469
src = &ucode->data[inst_size + data_size + init_size];
6470
len = priv->ucode_init_data.len;
6471
IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
6472
len);
6473
memcpy(priv->ucode_init_data.v_addr, src, len);
6474
}
6475
6476
/* Bootstrap instructions (5th block) */
6477
src = &ucode->data[inst_size + data_size + init_size + init_data_size];
6478
len = priv->ucode_boot.len;
6479
IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
6480
memcpy(priv->ucode_boot.v_addr, src, len);
6481
6482
/* We have our copies now, allow OS release its copies */
6483
release_firmware(ucode_raw);
6484
return 0;
6485
6486
err_pci_alloc:
6487
IWL_ERROR("failed to allocate pci memory\n");
6488
ret = -ENOMEM;
6489
iwl4965_dealloc_ucode_pci(priv);
6490
6491
err_release:
6492
release_firmware(ucode_raw);
6493
6494
error:
6495
return ret;
6496
}
6497
6498
6499
/**
6500
* iwl4965_set_ucode_ptrs - Set uCode address location
6501
*
6502
* Tell initialization uCode where to find runtime uCode.
6503
*
6504
* BSM registers initially contain pointers to initialization uCode.
6505
* We need to replace them to load runtime uCode inst and data,
6506
* and to save runtime data when powering down.
6507
*/
6508
static int iwl4965_set_ucode_ptrs(struct iwl4965_priv *priv)
6509
{
6510
dma_addr_t pinst;
6511
dma_addr_t pdata;
6512
int rc = 0;
6513
unsigned long flags;
6514
6515
/* bits 35:4 for 4965 */
6516
pinst = priv->ucode_code.p_addr >> 4;
6517
pdata = priv->ucode_data_backup.p_addr >> 4;
6518
6519
spin_lock_irqsave(&priv->lock, flags);
6520
rc = iwl4965_grab_nic_access(priv);
6521
if (rc) {
6522
spin_unlock_irqrestore(&priv->lock, flags);
6523
return rc;
6524
}
6525
6526
/* Tell bootstrap uCode where to find image to load */
6527
iwl4965_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
6528
iwl4965_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6529
iwl4965_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
6530
priv->ucode_data.len);
6531
6532
/* Inst bytecount must be last to set up, bit 31 signals uCode
6533
* that all new ptr/size info is in place */
6534
iwl4965_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
6535
priv->ucode_code.len | BSM_DRAM_INST_LOAD);
6536
6537
iwl4965_release_nic_access(priv);
6538
6539
spin_unlock_irqrestore(&priv->lock, flags);
6540
6541
IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
6542
6543
return rc;
6544
}
6545
6546
/**
6547
* iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
6548
*
6549
* Called after REPLY_ALIVE notification received from "initialize" uCode.
6550
*
6551
* The 4965 "initialize" ALIVE reply contains calibration data for:
6552
* Voltage, temperature, and MIMO tx gain correction, now stored in priv
6553
* (3945 does not contain this data).
6554
*
6555
* Tell "initialize" uCode to go ahead and load the runtime uCode.
6556
*/
6557
static void iwl4965_init_alive_start(struct iwl4965_priv *priv)
6558
{
6559
/* Check alive response for "valid" sign from uCode */
6560
if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
6561
/* We had an error bringing up the hardware, so take it
6562
* all the way back down so we can try again */
6563
IWL_DEBUG_INFO("Initialize Alive failed.\n");
6564
goto restart;
6565
}
6566
6567
/* Bootstrap uCode has loaded initialize uCode ... verify inst image.
6568
* This is a paranoid check, because we would not have gotten the
6569
* "initialize" alive if code weren't properly loaded. */
6570
if (iwl4965_verify_ucode(priv)) {
6571
/* Runtime instruction load was bad;
6572
* take it all the way back down so we can try again */
6573
IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
6574
goto restart;
6575
}
6576
6577
/* Calculate temperature */
6578
priv->temperature = iwl4965_get_temperature(priv);
6579
6580
/* Send pointers to protocol/runtime uCode image ... init code will
6581
* load and launch runtime uCode, which will send us another "Alive"
6582
* notification. */
6583
IWL_DEBUG_INFO("Initialization Alive received.\n");
6584
if (iwl4965_set_ucode_ptrs(priv)) {
6585
/* Runtime instruction load won't happen;
6586
* take it all the way back down so we can try again */
6587
IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
6588
goto restart;
6589
}
6590
return;
6591
6592
restart:
6593
queue_work(priv->workqueue, &priv->restart);
6594
}
6595
6596
6597
/**
6598
* iwl4965_alive_start - called after REPLY_ALIVE notification received
6599
* from protocol/runtime uCode (initialization uCode's
6600
* Alive gets handled by iwl4965_init_alive_start()).
6601
*/
6602
static void iwl4965_alive_start(struct iwl4965_priv *priv)
6603
{
6604
int rc = 0;
6605
6606
IWL_DEBUG_INFO("Runtime Alive received.\n");
6607
6608
if (priv->card_alive.is_valid != UCODE_VALID_OK) {
6609
/* We had an error bringing up the hardware, so take it
6610
* all the way back down so we can try again */
6611
IWL_DEBUG_INFO("Alive failed.\n");
6612
goto restart;
6613
}
6614
6615
/* Initialize uCode has loaded Runtime uCode ... verify inst image.
6616
* This is a paranoid check, because we would not have gotten the
6617
* "runtime" alive if code weren't properly loaded. */
6618
if (iwl4965_verify_ucode(priv)) {
6619
/* Runtime instruction load was bad;
6620
* take it all the way back down so we can try again */
6621
IWL_DEBUG_INFO("Bad runtime uCode load.\n");
6622
goto restart;
6623
}
6624
6625
iwl4965_clear_stations_table(priv);
6626
6627
rc = iwl4965_alive_notify(priv);
6628
if (rc) {
6629
IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
6630
rc);
6631
goto restart;
6632
}
6633
6634
/* After the ALIVE response, we can send host commands to 4965 uCode */
6635
set_bit(STATUS_ALIVE, &priv->status);
6636
6637
/* Clear out the uCode error bit if it is set */
6638
clear_bit(STATUS_FW_ERROR, &priv->status);
6639
6640
rc = iwl4965_init_channel_map(priv);
6641
if (rc) {
6642
IWL_ERROR("initializing regulatory failed: %d\n", rc);
6643
return;
6644
}
6645
6646
iwl4965_init_geos(priv);
6647
iwl4965_reset_channel_flag(priv);
6648
6649
if (iwl4965_is_rfkill(priv))
6650
return;
6651
6652
iwlwifi_ieee80211_start_queues(priv->hw);
6653
6654
priv->active_rate = priv->rates_mask;
6655
priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
6656
6657
iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
6658
6659
if (iwl4965_is_associated(priv)) {
6660
struct iwl4965_rxon_cmd *active_rxon =
6661
(struct iwl4965_rxon_cmd *)(&priv->active_rxon);
6662
6663
memcpy(&priv->staging_rxon, &priv->active_rxon,
6664
sizeof(priv->staging_rxon));
6665
active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6666
} else {
6667
/* Initialize our rx_config data */
6668
iwl4965_connection_init_rx_config(priv);
6669
memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
6670
}
6671
6672
/* Configure Bluetooth device coexistence support */
6673
iwl4965_send_bt_config(priv);
6674
6675
/* Configure the adapter for unassociated operation */
6676
iwl4965_commit_rxon(priv);
6677
6678
/* At this point, the NIC is initialized and operational */
6679
priv->notif_missed_beacons = 0;
6680
set_bit(STATUS_READY, &priv->status);
6681
6682
iwl4965_rf_kill_ct_config(priv);
6683
6684
IWL_DEBUG_INFO("ALIVE processing complete.\n");
6685
wake_up_interruptible(&priv->wait_command_queue);
6686
6687
if (priv->error_recovering)
6688
iwl4965_error_recovery(priv);
6689
6690
return;
6691
6692
restart:
6693
queue_work(priv->workqueue, &priv->restart);
6694
}
6695
6696
static void iwl4965_cancel_deferred_work(struct iwl4965_priv *priv);
6697
6698
static void __iwl4965_down(struct iwl4965_priv *priv)
6699
{
6700
unsigned long flags;
6701
int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
6702
struct ieee80211_conf *conf = NULL;
6703
6704
IWL_DEBUG_INFO(DRV_NAME " is going down\n");
6705
6706
conf = ieee80211_get_hw_conf(priv->hw);
6707
6708
if (!exit_pending)
6709
set_bit(STATUS_EXIT_PENDING, &priv->status);
6710
6711
iwl4965_clear_stations_table(priv);
6712
6713
/* Unblock any waiting calls */
6714
wake_up_interruptible_all(&priv->wait_command_queue);
6715
6716
/* Wipe out the EXIT_PENDING status bit if we are not actually
6717
* exiting the module */
6718
if (!exit_pending)
6719
clear_bit(STATUS_EXIT_PENDING, &priv->status);
6720
6721
/* stop and reset the on-board processor */
6722
iwl4965_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
6723
6724
/* tell the device to stop sending interrupts */
6725
iwl4965_disable_interrupts(priv);
6726
6727
if (priv->mac80211_registered)
6728
iwlwifi_iwlwifi_ieee80211_stop_queues(priv->hw);
6729
6730
/* If we have not previously called iwl4965_init() then
6731
* clear all bits but the RF Kill and SUSPEND bits and return */
6732
if (!iwl4965_is_init(priv)) {
6733
priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6734
STATUS_RF_KILL_HW |
6735
test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6736
STATUS_RF_KILL_SW |
6737
test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6738
STATUS_IN_SUSPEND;
6739
goto exit;
6740
}
6741
6742
/* ...otherwise clear out all the status bits but the RF Kill and
6743
* SUSPEND bits and continue taking the NIC down. */
6744
priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6745
STATUS_RF_KILL_HW |
6746
test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6747
STATUS_RF_KILL_SW |
6748
test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6749
STATUS_IN_SUSPEND |
6750
test_bit(STATUS_FW_ERROR, &priv->status) <<
6751
STATUS_FW_ERROR;
6752
6753
spin_lock_irqsave(&priv->lock, flags);
6754
iwl4965_clear_bit(priv, CSR_GP_CNTRL,
6755
CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
6756
spin_unlock_irqrestore(&priv->lock, flags);
6757
6758
iwl4965_hw_txq_ctx_stop(priv);
6759
iwl4965_hw_rxq_stop(priv);
6760
6761
spin_lock_irqsave(&priv->lock, flags);
6762
if (!iwl4965_grab_nic_access(priv)) {
6763
iwl4965_write_prph(priv, APMG_CLK_DIS_REG,
6764
APMG_CLK_VAL_DMA_CLK_RQT);
6765
iwl4965_release_nic_access(priv);
6766
}
6767
spin_unlock_irqrestore(&priv->lock, flags);
6768
6769
udelay(5);
6770
6771
iwl4965_hw_nic_stop_master(priv);
6772
iwl4965_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
6773
iwl4965_hw_nic_reset(priv);
6774
6775
exit:
6776
memset(&priv->card_alive, 0, sizeof(struct iwl4965_alive_resp));
6777
6778
if (priv->ibss_beacon)
6779
dev_kfree_skb(priv->ibss_beacon);
6780
priv->ibss_beacon = NULL;
6781
6782
/* clear out any free frames */
6783
iwl4965_clear_free_frames(priv);
6784
}
6785
6786
static void iwl4965_down(struct iwl4965_priv *priv)
6787
{
6788
mutex_lock(&priv->mutex);
6789
__iwl4965_down(priv);
6790
mutex_unlock(&priv->mutex);
6791
6792
iwl4965_cancel_deferred_work(priv);
6793
}
6794
6795
#define MAX_HW_RESTARTS 5
6796
6797
static int __iwl4965_up(struct iwl4965_priv *priv)
6798
{
6799
int rc, i;
6800
6801
if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6802
IWL_WARNING("Exit pending; will not bring the NIC up\n");
6803
return -EIO;
6804
}
6805
6806
if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
6807
IWL_WARNING("Radio disabled by SW RF kill (module "
6808
"parameter)\n");
6809
return -ENODEV;
6810
}
6811
6812
/* If platform's RF_KILL switch is NOT set to KILL */
6813
if (iwl4965_read32(priv, CSR_GP_CNTRL) &
6814
CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
6815
clear_bit(STATUS_RF_KILL_HW, &priv->status);
6816
else {
6817
set_bit(STATUS_RF_KILL_HW, &priv->status);
6818
if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
6819
IWL_WARNING("Radio disabled by HW RF Kill switch\n");
6820
return -ENODEV;
6821
}
6822
}
6823
6824
iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
6825
6826
rc = iwl4965_hw_nic_init(priv);
6827
if (rc) {
6828
IWL_ERROR("Unable to int nic\n");
6829
return rc;
6830
}
6831
6832
/* make sure rfkill handshake bits are cleared */
6833
iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6834
iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
6835
CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
6836
6837
/* clear (again), then enable host interrupts */
6838
iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
6839
iwl4965_enable_interrupts(priv);
6840
6841
/* really make sure rfkill handshake bits are cleared */
6842
iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6843
iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6844
6845
/* Copy original ucode data image from disk into backup cache.
6846
* This will be used to initialize the on-board processor's
6847
* data SRAM for a clean start when the runtime program first loads. */
6848
memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
6849
priv->ucode_data.len);
6850
6851
/* We return success when we resume from suspend and rf_kill is on. */
6852
if (test_bit(STATUS_RF_KILL_HW, &priv->status))
6853
return 0;
6854
6855
for (i = 0; i < MAX_HW_RESTARTS; i++) {
6856
6857
iwl4965_clear_stations_table(priv);
6858
6859
/* load bootstrap state machine,
6860
* load bootstrap program into processor's memory,
6861
* prepare to load the "initialize" uCode */
6862
rc = iwl4965_load_bsm(priv);
6863
6864
if (rc) {
6865
IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
6866
continue;
6867
}
6868
6869
/* start card; "initialize" will load runtime ucode */
6870
iwl4965_nic_start(priv);
6871
6872
IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
6873
6874
return 0;
6875
}
6876
6877
set_bit(STATUS_EXIT_PENDING, &priv->status);
6878
__iwl4965_down(priv);
6879
6880
/* tried to restart and config the device for as long as our
6881
* patience could withstand */
6882
IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
6883
return -EIO;
6884
}
6885
6886
6887
/*****************************************************************************
6888
*
6889
* Workqueue callbacks
6890
*
6891
*****************************************************************************/
6892
6893
static void iwl4965_bg_init_alive_start(struct work_struct *data)
6894
{
6895
struct iwl4965_priv *priv =
6896
container_of(data, struct iwl4965_priv, init_alive_start.work);
6897
6898
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6899
return;
6900
6901
mutex_lock(&priv->mutex);
6902
iwl4965_init_alive_start(priv);
6903
mutex_unlock(&priv->mutex);
6904
}
6905
6906
static void iwl4965_bg_alive_start(struct work_struct *data)
6907
{
6908
struct iwl4965_priv *priv =
6909
container_of(data, struct iwl4965_priv, alive_start.work);
6910
6911
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6912
return;
6913
6914
mutex_lock(&priv->mutex);
6915
iwl4965_alive_start(priv);
6916
mutex_unlock(&priv->mutex);
6917
}
6918
6919
static void iwl4965_bg_rf_kill(struct work_struct *work)
6920
{
6921
struct iwl4965_priv *priv = container_of(work, struct iwl4965_priv, rf_kill);
6922
6923
wake_up_interruptible(&priv->wait_command_queue);
6924
6925
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6926
return;
6927
6928
mutex_lock(&priv->mutex);
6929
6930
if (!iwl4965_is_rfkill(priv)) {
6931
IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
6932
"HW and/or SW RF Kill no longer active, restarting "
6933
"device\n");
6934
if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6935
queue_work(priv->workqueue, &priv->restart);
6936
} else {
6937
6938
if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
6939
IWL_DEBUG_RF_KILL("Can not turn radio back on - "
6940
"disabled by SW switch\n");
6941
else
6942
IWL_WARNING("Radio Frequency Kill Switch is On:\n"
6943
"Kill switch must be turned off for "
6944
"wireless networking to work.\n");
6945
}
6946
mutex_unlock(&priv->mutex);
6947
}
6948
6949
#define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
6950
6951
static void iwl4965_bg_scan_check(struct work_struct *data)
6952
{
6953
struct iwl4965_priv *priv =
6954
container_of(data, struct iwl4965_priv, scan_check.work);
6955
6956
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6957
return;
6958
6959
mutex_lock(&priv->mutex);
6960
if (test_bit(STATUS_SCANNING, &priv->status) ||
6961
test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6962
IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
6963
"Scan completion watchdog resetting adapter (%dms)\n",
6964
jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
6965
6966
if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6967
iwl4965_send_scan_abort(priv);
6968
}
6969
mutex_unlock(&priv->mutex);
6970
}
6971
6972
static void iwl4965_bg_request_scan(struct work_struct *data)
6973
{
6974
struct iwl4965_priv *priv =
6975
container_of(data, struct iwl4965_priv, request_scan);
6976
struct iwl4965_host_cmd cmd = {
6977
.id = REPLY_SCAN_CMD,
6978
.len = sizeof(struct iwl4965_scan_cmd),
6979
.meta.flags = CMD_SIZE_HUGE,
6980
};
6981
int rc = 0;
6982
struct iwl4965_scan_cmd *scan;
6983
struct ieee80211_conf *conf = NULL;
6984
u8 direct_mask;
6985
int phymode;
6986
6987
conf = ieee80211_get_hw_conf(priv->hw);
6988
6989
mutex_lock(&priv->mutex);
6990
6991
if (!iwl4965_is_ready(priv)) {
6992
IWL_WARNING("request scan called when driver not ready.\n");
6993
goto done;
6994
}
6995
6996
/* Make sure the scan wasn't cancelled before this queued work
6997
* was given the chance to run... */
6998
if (!test_bit(STATUS_SCANNING, &priv->status))
6999
goto done;
7000
7001
/* This should never be called or scheduled if there is currently
7002
* a scan active in the hardware. */
7003
if (test_bit(STATUS_SCAN_HW, &priv->status)) {
7004
IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
7005
"Ignoring second request.\n");
7006
rc = -EIO;
7007
goto done;
7008
}
7009
7010
if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
7011
IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
7012
goto done;
7013
}
7014
7015
if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
7016
IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
7017
goto done;
7018
}
7019
7020
if (iwl4965_is_rfkill(priv)) {
7021
IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
7022
goto done;
7023
}
7024
7025
if (!test_bit(STATUS_READY, &priv->status)) {
7026
IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
7027
goto done;
7028
}
7029
7030
if (!priv->scan_bands) {
7031
IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
7032
goto done;
7033
}
7034
7035
if (!priv->scan) {
7036
priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
7037
IWL_MAX_SCAN_SIZE, GFP_KERNEL);
7038
if (!priv->scan) {
7039
rc = -ENOMEM;
7040
goto done;
7041
}
7042
}
7043
scan = priv->scan;
7044
memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
7045
7046
scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
7047
scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
7048
7049
if (iwl4965_is_associated(priv)) {
7050
u16 interval = 0;
7051
u32 extra;
7052
u32 suspend_time = 100;
7053
u32 scan_suspend_time = 100;
7054
unsigned long flags;
7055
7056
IWL_DEBUG_INFO("Scanning while associated...\n");
7057
7058
spin_lock_irqsave(&priv->lock, flags);
7059
interval = priv->beacon_int;
7060
spin_unlock_irqrestore(&priv->lock, flags);
7061
7062
scan->suspend_time = 0;
7063
scan->max_out_time = cpu_to_le32(200 * 1024);
7064
if (!interval)
7065
interval = suspend_time;
7066
7067
extra = (suspend_time / interval) << 22;
7068
scan_suspend_time = (extra |
7069
((suspend_time % interval) * 1024));
7070
scan->suspend_time = cpu_to_le32(scan_suspend_time);
7071
IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
7072
scan_suspend_time, interval);
7073
}
7074
7075
/* We should add the ability for user to lock to PASSIVE ONLY */
7076
if (priv->one_direct_scan) {
7077
IWL_DEBUG_SCAN
7078
("Kicking off one direct scan for '%s'\n",
7079
iwl4965_escape_essid(priv->direct_ssid,
7080
priv->direct_ssid_len));
7081
scan->direct_scan[0].id = WLAN_EID_SSID;
7082
scan->direct_scan[0].len = priv->direct_ssid_len;
7083
memcpy(scan->direct_scan[0].ssid,
7084
priv->direct_ssid, priv->direct_ssid_len);
7085
direct_mask = 1;
7086
} else if (!iwl4965_is_associated(priv) && priv->essid_len) {
7087
scan->direct_scan[0].id = WLAN_EID_SSID;
7088
scan->direct_scan[0].len = priv->essid_len;
7089
memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
7090
direct_mask = 1;
7091
} else
7092
direct_mask = 0;
7093
7094
/* We don't build a direct scan probe request; the uCode will do
7095
* that based on the direct_mask added to each channel entry */
7096
scan->tx_cmd.len = cpu_to_le16(
7097
iwl4965_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
7098
IWL_MAX_SCAN_SIZE - sizeof(scan), 0));
7099
scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
7100
scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
7101
scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
7102
7103
/* flags + rate selection */
7104
7105
scan->tx_cmd.tx_flags |= cpu_to_le32(0x200);
7106
7107
switch (priv->scan_bands) {
7108
case 2:
7109
scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
7110
scan->tx_cmd.rate_n_flags =
7111
iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
7112
RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
7113
7114
scan->good_CRC_th = 0;
7115
phymode = MODE_IEEE80211G;
7116
break;
7117
7118
case 1:
7119
scan->tx_cmd.rate_n_flags =
7120
iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
7121
RATE_MCS_ANT_B_MSK);
7122
scan->good_CRC_th = IWL_GOOD_CRC_TH;
7123
phymode = MODE_IEEE80211A;
7124
break;
7125
7126
default:
7127
IWL_WARNING("Invalid scan band count\n");
7128
goto done;
7129
}
7130
7131
/* select Rx chains */
7132
7133
/* Force use of chains B and C (0x6) for scan Rx.
7134
* Avoid A (0x1) because of its off-channel reception on A-band.
7135
* MIMO is not used here, but value is required to make uCode happy. */
7136
scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
7137
cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
7138
(0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
7139
(0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
7140
7141
if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
7142
scan->filter_flags = RXON_FILTER_PROMISC_MSK;
7143
7144
if (direct_mask)
7145
IWL_DEBUG_SCAN
7146
("Initiating direct scan for %s.\n",
7147
iwl4965_escape_essid(priv->essid, priv->essid_len));
7148
else
7149
IWL_DEBUG_SCAN("Initiating indirect scan.\n");
7150
7151
scan->channel_count =
7152
iwl4965_get_channels_for_scan(
7153
priv, phymode, 1, /* active */
7154
direct_mask,
7155
(void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
7156
7157
cmd.len += le16_to_cpu(scan->tx_cmd.len) +
7158
scan->channel_count * sizeof(struct iwl4965_scan_channel);
7159
cmd.data = scan;
7160
scan->len = cpu_to_le16(cmd.len);
7161
7162
set_bit(STATUS_SCAN_HW, &priv->status);
7163
rc = iwl4965_send_cmd_sync(priv, &cmd);
7164
if (rc)
7165
goto done;
7166
7167
queue_delayed_work(priv->workqueue, &priv->scan_check,
7168
IWL_SCAN_CHECK_WATCHDOG);
7169
7170
mutex_unlock(&priv->mutex);
7171
return;
7172
7173
done:
7174
/* inform mac80211 scan aborted */
7175
queue_work(priv->workqueue, &priv->scan_completed);
7176
mutex_unlock(&priv->mutex);
7177
}
7178
7179
static void iwl4965_bg_up(struct work_struct *data)
7180
{
7181
struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv, up);
7182
7183
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7184
return;
7185
7186
mutex_lock(&priv->mutex);
7187
__iwl4965_up(priv);
7188
mutex_unlock(&priv->mutex);
7189
}
7190
7191
static void iwl4965_bg_restart(struct work_struct *data)
7192
{
7193
struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv, restart);
7194
7195
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7196
return;
7197
7198
iwl4965_down(priv);
7199
queue_work(priv->workqueue, &priv->up);
7200
}
7201
7202
static void iwl4965_bg_rx_replenish(struct work_struct *data)
7203
{
7204
struct iwl4965_priv *priv =
7205
container_of(data, struct iwl4965_priv, rx_replenish);
7206
7207
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7208
return;
7209
7210
mutex_lock(&priv->mutex);
7211
iwl4965_rx_replenish(priv);
7212
mutex_unlock(&priv->mutex);
7213
}
7214
7215
#define IWL_DELAY_NEXT_SCAN (HZ*2)
7216
7217
static void iwl4965_bg_post_associate(struct work_struct *data)
7218
{
7219
struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv,
7220
post_associate.work);
7221
7222
int rc = 0;
7223
struct ieee80211_conf *conf = NULL;
7224
7225
if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7226
IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
7227
return;
7228
}
7229
7230
IWL_DEBUG_ASSOC("Associated as %d to: " MAC_FMT "\n",
7231
priv->assoc_id, MAC_ARG(priv->active_rxon.bssid_addr));
7232
7233
7234
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7235
return;
7236
7237
mutex_lock(&priv->mutex);
7238
7239
if (!priv->interface_id || !priv->is_open) {
7240
mutex_unlock(&priv->mutex);
7241
return;
7242
}
7243
iwl4965_scan_cancel_timeout(priv, 200);
7244
7245
conf = ieee80211_get_hw_conf(priv->hw);
7246
7247
priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7248
iwl4965_commit_rxon(priv);
7249
7250
memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
7251
iwl4965_setup_rxon_timing(priv);
7252
rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7253
sizeof(priv->rxon_timing), &priv->rxon_timing);
7254
if (rc)
7255
IWL_WARNING("REPLY_RXON_TIMING failed - "
7256
"Attempting to continue.\n");
7257
7258
priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7259
7260
#ifdef CONFIG_IWL4965_HT
7261
if (priv->is_ht_enabled && priv->current_assoc_ht.is_ht)
7262
iwl4965_set_rxon_ht(priv, &priv->current_assoc_ht);
7263
else {
7264
priv->active_rate_ht[0] = 0;
7265
priv->active_rate_ht[1] = 0;
7266
priv->current_channel_width = IWL_CHANNEL_WIDTH_20MHZ;
7267
}
7268
#endif /* CONFIG_IWL4965_HT*/
7269
iwl4965_set_rxon_chain(priv);
7270
priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7271
7272
IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
7273
priv->assoc_id, priv->beacon_int);
7274
7275
if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7276
priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
7277
else
7278
priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
7279
7280
if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7281
if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
7282
priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
7283
else
7284
priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
7285
7286
if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7287
priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
7288
7289
}
7290
7291
iwl4965_commit_rxon(priv);
7292
7293
switch (priv->iw_mode) {
7294
case IEEE80211_IF_TYPE_STA:
7295
iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
7296
break;
7297
7298
case IEEE80211_IF_TYPE_IBSS:
7299
7300
/* clear out the station table */
7301
iwl4965_clear_stations_table(priv);
7302
7303
iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
7304
iwl4965_rxon_add_station(priv, priv->bssid, 0);
7305
iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
7306
iwl4965_send_beacon_cmd(priv);
7307
7308
break;
7309
7310
default:
7311
IWL_ERROR("%s Should not be called in %d mode\n",
7312
__FUNCTION__, priv->iw_mode);
7313
break;
7314
}
7315
7316
iwl4965_sequence_reset(priv);
7317
7318
#ifdef CONFIG_IWL4965_SENSITIVITY
7319
/* Enable Rx differential gain and sensitivity calibrations */
7320
iwl4965_chain_noise_reset(priv);
7321
priv->start_calib = 1;
7322
#endif /* CONFIG_IWL4965_SENSITIVITY */
7323
7324
if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7325
priv->assoc_station_added = 1;
7326
7327
#ifdef CONFIG_IWL4965_QOS
7328
iwl4965_activate_qos(priv, 0);
7329
#endif /* CONFIG_IWL4965_QOS */
7330
/* we have just associated, don't start scan too early */
7331
priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
7332
mutex_unlock(&priv->mutex);
7333
}
7334
7335
static void iwl4965_bg_abort_scan(struct work_struct *work)
7336
{
7337
struct iwl4965_priv *priv = container_of(work, struct iwl4965_priv, abort_scan);
7338
7339
if (!iwl4965_is_ready(priv))
7340
return;
7341
7342
mutex_lock(&priv->mutex);
7343
7344
set_bit(STATUS_SCAN_ABORTING, &priv->status);
7345
iwl4965_send_scan_abort(priv);
7346
7347
mutex_unlock(&priv->mutex);
7348
}
7349
7350
static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
7351
7352
static void iwl4965_bg_scan_completed(struct work_struct *work)
7353
{
7354
struct iwl4965_priv *priv =
7355
container_of(work, struct iwl4965_priv, scan_completed);
7356
7357
IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
7358
7359
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7360
return;
7361
7362
if (test_bit(STATUS_CONF_PENDING, &priv->status))
7363
iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
7364
7365
iwlwifi_ieee80211_scan_completed(priv->hw);
7366
7367
/* Since setting the TXPOWER may have been deferred while
7368
* performing the scan, fire one off */
7369
mutex_lock(&priv->mutex);
7370
iwl4965_hw_reg_send_txpower(priv);
7371
mutex_unlock(&priv->mutex);
7372
}
7373
7374
/*****************************************************************************
7375
*
7376
* mac80211 entry point functions
7377
*
7378
*****************************************************************************/
7379
7380
#define UCODE_READY_TIMEOUT (2 * HZ)
7381
7382
static int iwl4965_mac_open(struct ieee80211_hw *hw)
7383
{
7384
struct iwl4965_priv *priv = hw->priv;
7385
int ret;
7386
7387
IWL_DEBUG_MAC80211("enter\n");
7388
7389
if (pci_enable_device(priv->pci_dev)) {
7390
IWL_ERROR("Fail to pci_enable_device\n");
7391
return -ENODEV;
7392
}
7393
pci_restore_state(priv->pci_dev);
7394
pci_enable_msi(priv->pci_dev);
7395
7396
ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
7397
DRV_NAME, priv);
7398
if (ret) {
7399
IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
7400
goto out_disable_msi;
7401
}
7402
7403
/* we should be verifying the device is ready to be opened */
7404
mutex_lock(&priv->mutex);
7405
7406
memset(&priv->staging_rxon, 0, sizeof(struct iwl4965_rxon_cmd));
7407
/* fetch ucode file from disk, alloc and copy to bus-master buffers ...
7408
* ucode filename and max sizes are card-specific. */
7409
7410
if (!priv->ucode_code.len) {
7411
ret = iwl4965_read_ucode(priv);
7412
if (ret) {
7413
IWL_ERROR("Could not read microcode: %d\n", ret);
7414
mutex_unlock(&priv->mutex);
7415
goto out_release_irq;
7416
}
7417
}
7418
7419
ret = __iwl4965_up(priv);
7420
7421
mutex_unlock(&priv->mutex);
7422
7423
if (ret)
7424
goto out_release_irq;
7425
7426
IWL_DEBUG_INFO("Start UP work done.\n");
7427
7428
if (test_bit(STATUS_IN_SUSPEND, &priv->status))
7429
return 0;
7430
7431
/* Wait for START_ALIVE from ucode. Otherwise callbacks from
7432
* mac80211 will not be run successfully. */
7433
ret = wait_event_interruptible_timeout(priv->wait_command_queue,
7434
test_bit(STATUS_READY, &priv->status),
7435
UCODE_READY_TIMEOUT);
7436
if (!ret) {
7437
if (!test_bit(STATUS_READY, &priv->status)) {
7438
IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
7439
jiffies_to_msecs(UCODE_READY_TIMEOUT));
7440
ret = -ETIMEDOUT;
7441
goto out_release_irq;
7442
}
7443
}
7444
7445
priv->is_open = 1;
7446
IWL_DEBUG_MAC80211("leave\n");
7447
return 0;
7448
7449
out_release_irq:
7450
free_irq(priv->pci_dev->irq, priv);
7451
out_disable_msi:
7452
pci_disable_msi(priv->pci_dev);
7453
pci_disable_device(priv->pci_dev);
7454
priv->is_open = 0;
7455
IWL_DEBUG_MAC80211("leave - failed\n");
7456
return ret;
7457
}
7458
7459
static int iwl4965_mac_stop(struct ieee80211_hw *hw)
7460
{
7461
struct iwl4965_priv *priv = hw->priv;
7462
7463
IWL_DEBUG_MAC80211("enter\n");
7464
7465
if (!priv->is_open) {
7466
IWL_DEBUG_MAC80211("leave - skip\n");
7467
return 0;
7468
}
7469
7470
priv->is_open = 0;
7471
7472
if (iwl4965_is_ready_rf(priv)) {
7473
/* stop mac, cancel any scan request and clear
7474
* RXON_FILTER_ASSOC_MSK BIT
7475
*/
7476
mutex_lock(&priv->mutex);
7477
iwl4965_scan_cancel_timeout(priv, 100);
7478
cancel_delayed_work(&priv->post_associate);
7479
mutex_unlock(&priv->mutex);
7480
}
7481
7482
iwl4965_down(priv);
7483
7484
flush_workqueue(priv->workqueue);
7485
free_irq(priv->pci_dev->irq, priv);
7486
pci_disable_msi(priv->pci_dev);
7487
pci_save_state(priv->pci_dev);
7488
pci_disable_device(priv->pci_dev);
7489
7490
IWL_DEBUG_MAC80211("leave\n");
7491
return 0;
7492
}
7493
7494
static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
7495
struct ieee80211_tx_control *ctl)
7496
{
7497
struct iwl4965_priv *priv = hw->priv;
7498
7499
IWL_DEBUG_MAC80211("enter\n");
7500
7501
if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
7502
IWL_DEBUG_MAC80211("leave - monitor\n");
7503
return -1;
7504
}
7505
7506
IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
7507
ctl->tx_rate);
7508
7509
if (iwl4965_tx_skb(priv, skb, ctl))
7510
dev_kfree_skb_any(skb);
7511
7512
IWL_DEBUG_MAC80211("leave\n");
7513
return 0;
7514
}
7515
7516
static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
7517
struct ieee80211_if_init_conf *conf)
7518
{
7519
struct iwl4965_priv *priv = hw->priv;
7520
unsigned long flags;
7521
7522
IWL_DEBUG_MAC80211("enter: id %d, type %d\n", conf->if_id, conf->type);
7523
7524
if (priv->interface_id) {
7525
IWL_DEBUG_MAC80211("leave - interface_id != 0\n");
7526
return 0;
7527
}
7528
7529
spin_lock_irqsave(&priv->lock, flags);
7530
priv->interface_id = conf->if_id;
7531
7532
spin_unlock_irqrestore(&priv->lock, flags);
7533
7534
mutex_lock(&priv->mutex);
7535
7536
if (conf->mac_addr) {
7537
IWL_DEBUG_MAC80211("Set: " MAC_FMT "\n", MAC_ARG(conf->mac_addr));
7538
memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
7539
}
7540
7541
if (iwl4965_is_ready(priv))
7542
iwl4965_set_mode(priv, conf->type);
7543
7544
mutex_unlock(&priv->mutex);
7545
7546
IWL_DEBUG_MAC80211("leave\n");
7547
return 0;
7548
}
7549
7550
/**
7551
* iwl4965_mac_config - mac80211 config callback
7552
*
7553
* We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
7554
* be set inappropriately and the driver currently sets the hardware up to
7555
* use it whenever needed.
7556
*/
7557
static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
7558
{
7559
struct iwl4965_priv *priv = hw->priv;
7560
const struct iwl4965_channel_info *ch_info;
7561
unsigned long flags;
7562
int ret = 0;
7563
7564
mutex_lock(&priv->mutex);
7565
IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel);
7566
7567
if (!iwl4965_is_ready(priv)) {
7568
IWL_DEBUG_MAC80211("leave - not ready\n");
7569
ret = -EIO;
7570
goto out;
7571
}
7572
7573
/* TODO: Figure out how to get ieee80211_local->sta_scanning w/ only
7574
* what is exposed through include/ declarations */
7575
if (unlikely(!iwl4965_param_disable_hw_scan &&
7576
test_bit(STATUS_SCANNING, &priv->status))) {
7577
IWL_DEBUG_MAC80211("leave - scanning\n");
7578
set_bit(STATUS_CONF_PENDING, &priv->status);
7579
mutex_unlock(&priv->mutex);
7580
return 0;
7581
}
7582
7583
spin_lock_irqsave(&priv->lock, flags);
7584
7585
ch_info = iwl4965_get_channel_info(priv, conf->phymode, conf->channel);
7586
if (!is_channel_valid(ch_info)) {
7587
IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this SKU.\n",
7588
conf->channel, conf->phymode);
7589
IWL_DEBUG_MAC80211("leave - invalid channel\n");
7590
spin_unlock_irqrestore(&priv->lock, flags);
7591
ret = -EINVAL;
7592
goto out;
7593
}
7594
7595
#ifdef CONFIG_IWL4965_HT
7596
/* if we are switching fron ht to 2.4 clear flags
7597
* from any ht related info since 2.4 does not
7598
* support ht */
7599
if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel)
7600
#ifdef IEEE80211_CONF_CHANNEL_SWITCH
7601
&& !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
7602
#endif
7603
)
7604
priv->staging_rxon.flags = 0;
7605
#endif /* CONFIG_IWL4965_HT */
7606
7607
iwl4965_set_rxon_channel(priv, conf->phymode, conf->channel);
7608
7609
iwl4965_set_flags_for_phymode(priv, conf->phymode);
7610
7611
/* The list of supported rates and rate mask can be different
7612
* for each phymode; since the phymode may have changed, reset
7613
* the rate mask to what mac80211 lists */
7614
iwl4965_set_rate(priv);
7615
7616
spin_unlock_irqrestore(&priv->lock, flags);
7617
7618
#ifdef IEEE80211_CONF_CHANNEL_SWITCH
7619
if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
7620
iwl4965_hw_channel_switch(priv, conf->channel);
7621
goto out;
7622
}
7623
#endif
7624
7625
iwl4965_radio_kill_sw(priv, !conf->radio_enabled);
7626
7627
if (!conf->radio_enabled) {
7628
IWL_DEBUG_MAC80211("leave - radio disabled\n");
7629
goto out;
7630
}
7631
7632
if (iwl4965_is_rfkill(priv)) {
7633
IWL_DEBUG_MAC80211("leave - RF kill\n");
7634
ret = -EIO;
7635
goto out;
7636
}
7637
7638
iwl4965_set_rate(priv);
7639
7640
if (memcmp(&priv->active_rxon,
7641
&priv->staging_rxon, sizeof(priv->staging_rxon)))
7642
iwl4965_commit_rxon(priv);
7643
else
7644
IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
7645
7646
IWL_DEBUG_MAC80211("leave\n");
7647
7648
out:
7649
clear_bit(STATUS_CONF_PENDING, &priv->status);
7650
mutex_unlock(&priv->mutex);
7651
return ret;
7652
}
7653
7654
static void iwl4965_config_ap(struct iwl4965_priv *priv)
7655
{
7656
int rc = 0;
7657
7658
if (priv->status & STATUS_EXIT_PENDING)
7659
return;
7660
7661
/* The following should be done only at AP bring up */
7662
if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
7663
7664
/* RXON - unassoc (to set timing command) */
7665
priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7666
iwl4965_commit_rxon(priv);
7667
7668
/* RXON Timing */
7669
memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
7670
iwl4965_setup_rxon_timing(priv);
7671
rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7672
sizeof(priv->rxon_timing), &priv->rxon_timing);
7673
if (rc)
7674
IWL_WARNING("REPLY_RXON_TIMING failed - "
7675
"Attempting to continue.\n");
7676
7677
iwl4965_set_rxon_chain(priv);
7678
7679
/* FIXME: what should be the assoc_id for AP? */
7680
priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7681
if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7682
priv->staging_rxon.flags |=
7683
RXON_FLG_SHORT_PREAMBLE_MSK;
7684
else
7685
priv->staging_rxon.flags &=
7686
~RXON_FLG_SHORT_PREAMBLE_MSK;
7687
7688
if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7689
if (priv->assoc_capability &
7690
WLAN_CAPABILITY_SHORT_SLOT_TIME)
7691
priv->staging_rxon.flags |=
7692
RXON_FLG_SHORT_SLOT_MSK;
7693
else
7694
priv->staging_rxon.flags &=
7695
~RXON_FLG_SHORT_SLOT_MSK;
7696
7697
if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7698
priv->staging_rxon.flags &=
7699
~RXON_FLG_SHORT_SLOT_MSK;
7700
}
7701
/* restore RXON assoc */
7702
priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7703
iwl4965_commit_rxon(priv);
7704
#ifdef CONFIG_IWL4965_QOS
7705
iwl4965_activate_qos(priv, 1);
7706
#endif
7707
iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
7708
}
7709
iwl4965_send_beacon_cmd(priv);
7710
7711
/* FIXME - we need to add code here to detect a totally new
7712
* configuration, reset the AP, unassoc, rxon timing, assoc,
7713
* clear sta table, add BCAST sta... */
7714
}
7715
7716
static int iwl4965_mac_config_interface(struct ieee80211_hw *hw, int if_id,
7717
struct ieee80211_if_conf *conf)
7718
{
7719
struct iwl4965_priv *priv = hw->priv;
7720
unsigned long flags;
7721
int rc;
7722
7723
if (conf == NULL)
7724
return -EIO;
7725
7726
if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
7727
(!conf->beacon || !conf->ssid_len)) {
7728
IWL_DEBUG_MAC80211
7729
("Leaving in AP mode because HostAPD is not ready.\n");
7730
return 0;
7731
}
7732
7733
if (!iwl4965_is_alive(priv))
7734
return -EAGAIN;
7735
7736
mutex_lock(&priv->mutex);
7737
7738
IWL_DEBUG_MAC80211("enter: interface id %d\n", if_id);
7739
if (conf->bssid)
7740
IWL_DEBUG_MAC80211("bssid: " MAC_FMT "\n",
7741
MAC_ARG(conf->bssid));
7742
7743
if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
7744
!(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
7745
IWL_DEBUG_MAC80211("leave - scanning\n");
7746
mutex_unlock(&priv->mutex);
7747
return 0;
7748
}
7749
7750
if (priv->interface_id != if_id) {
7751
IWL_DEBUG_MAC80211("leave - interface_id != if_id\n");
7752
mutex_unlock(&priv->mutex);
7753
return 0;
7754
}
7755
7756
if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7757
if (!conf->bssid) {
7758
conf->bssid = priv->mac_addr;
7759
memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
7760
IWL_DEBUG_MAC80211("bssid was set to: " MAC_FMT "\n",
7761
MAC_ARG(conf->bssid));
7762
}
7763
if (priv->ibss_beacon)
7764
dev_kfree_skb(priv->ibss_beacon);
7765
7766
priv->ibss_beacon = conf->beacon;
7767
}
7768
7769
if (iwl4965_is_rfkill(priv))
7770
goto done;
7771
7772
if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
7773
!is_multicast_ether_addr(conf->bssid)) {
7774
/* If there is currently a HW scan going on in the background
7775
* then we need to cancel it else the RXON below will fail. */
7776
if (iwl4965_scan_cancel_timeout(priv, 100)) {
7777
IWL_WARNING("Aborted scan still in progress "
7778
"after 100ms\n");
7779
IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
7780
mutex_unlock(&priv->mutex);
7781
return -EAGAIN;
7782
}
7783
memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
7784
7785
/* TODO: Audit driver for usage of these members and see
7786
* if mac80211 deprecates them (priv->bssid looks like it
7787
* shouldn't be there, but I haven't scanned the IBSS code
7788
* to verify) - jpk */
7789
memcpy(priv->bssid, conf->bssid, ETH_ALEN);
7790
7791
if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7792
iwl4965_config_ap(priv);
7793
else {
7794
rc = iwl4965_commit_rxon(priv);
7795
if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
7796
iwl4965_rxon_add_station(
7797
priv, priv->active_rxon.bssid_addr, 1);
7798
}
7799
7800
} else {
7801
iwl4965_scan_cancel_timeout(priv, 100);
7802
priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7803
iwl4965_commit_rxon(priv);
7804
}
7805
7806
done:
7807
spin_lock_irqsave(&priv->lock, flags);
7808
if (!conf->ssid_len)
7809
memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7810
else
7811
memcpy(priv->essid, conf->ssid, conf->ssid_len);
7812
7813
priv->essid_len = conf->ssid_len;
7814
spin_unlock_irqrestore(&priv->lock, flags);
7815
7816
IWL_DEBUG_MAC80211("leave\n");
7817
mutex_unlock(&priv->mutex);
7818
7819
return 0;
7820
}
7821
7822
static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
7823
struct ieee80211_if_init_conf *conf)
7824
{
7825
struct iwl4965_priv *priv = hw->priv;
7826
7827
IWL_DEBUG_MAC80211("enter\n");
7828
7829
mutex_lock(&priv->mutex);
7830
7831
if (iwl4965_is_ready_rf(priv)) {
7832
iwl4965_scan_cancel_timeout(priv, 100);
7833
cancel_delayed_work(&priv->post_associate);
7834
priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7835
iwl4965_commit_rxon(priv);
7836
}
7837
if (priv->interface_id == conf->if_id) {
7838
priv->interface_id = 0;
7839
memset(priv->bssid, 0, ETH_ALEN);
7840
memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7841
priv->essid_len = 0;
7842
}
7843
mutex_unlock(&priv->mutex);
7844
7845
IWL_DEBUG_MAC80211("leave\n");
7846
}
7847
7848
static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
7849
{
7850
int rc = 0;
7851
unsigned long flags;
7852
struct iwl4965_priv *priv = hw->priv;
7853
7854
IWL_DEBUG_MAC80211("enter\n");
7855
7856
mutex_lock(&priv->mutex);
7857
spin_lock_irqsave(&priv->lock, flags);
7858
7859
if (!iwl4965_is_ready_rf(priv)) {
7860
rc = -EIO;
7861
IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
7862
goto out_unlock;
7863
}
7864
7865
if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
7866
rc = -EIO;
7867
IWL_ERROR("ERROR: APs don't scan\n");
7868
goto out_unlock;
7869
}
7870
7871
/* we don't schedule scan within next_scan_jiffies period */
7872
if (priv->next_scan_jiffies &&
7873
time_after(priv->next_scan_jiffies, jiffies)) {
7874
rc = -EAGAIN;
7875
goto out_unlock;
7876
}
7877
/* if we just finished scan ask for delay */
7878
if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
7879
IWL_DELAY_NEXT_SCAN, jiffies)) {
7880
rc = -EAGAIN;
7881
goto out_unlock;
7882
}
7883
if (len) {
7884
IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
7885
iwl4965_escape_essid(ssid, len), (int)len);
7886
7887
priv->one_direct_scan = 1;
7888
priv->direct_ssid_len = (u8)
7889
min((u8) len, (u8) IW_ESSID_MAX_SIZE);
7890
memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
7891
} else
7892
priv->one_direct_scan = 0;
7893
7894
rc = iwl4965_scan_initiate(priv);
7895
7896
IWL_DEBUG_MAC80211("leave\n");
7897
7898
out_unlock:
7899
spin_unlock_irqrestore(&priv->lock, flags);
7900
mutex_unlock(&priv->mutex);
7901
7902
return rc;
7903
}
7904
7905
static int iwl4965_mac_set_key(struct ieee80211_hw *hw, set_key_cmd cmd, u8 *addr,
7906
struct ieee80211_key_conf *key, int aid)
7907
{
7908
struct iwl4965_priv *priv = hw->priv;
7909
int rc = 0;
7910
u8 sta_id;
7911
7912
IWL_DEBUG_MAC80211("enter\n");
7913
7914
if (!iwl4965_param_hwcrypto) {
7915
IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7916
return -EOPNOTSUPP;
7917
}
7918
7919
sta_id = iwl4965_hw_find_station(priv, addr);
7920
if (sta_id == IWL_INVALID_STATION) {
7921
IWL_DEBUG_MAC80211("leave - " MAC_FMT " not in station map.\n",
7922
MAC_ARG(addr));
7923
return -EINVAL;
7924
}
7925
7926
mutex_lock(&priv->mutex);
7927
7928
iwl4965_scan_cancel_timeout(priv, 100);
7929
7930
switch (cmd) {
7931
case SET_KEY:
7932
rc = iwl4965_update_sta_key_info(priv, key, sta_id);
7933
if (!rc) {
7934
iwl4965_set_rxon_hwcrypto(priv, 1);
7935
iwl4965_commit_rxon(priv);
7936
key->hw_key_idx = sta_id;
7937
IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7938
}
7939
break;
7940
case DISABLE_KEY:
7941
rc = iwl4965_clear_sta_key_info(priv, sta_id);
7942
if (!rc) {
7943
iwl4965_set_rxon_hwcrypto(priv, 0);
7944
iwl4965_commit_rxon(priv);
7945
IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7946
}
7947
break;
7948
default:
7949
rc = -EINVAL;
7950
}
7951
7952
IWL_DEBUG_MAC80211("leave\n");
7953
mutex_unlock(&priv->mutex);
7954
7955
return rc;
7956
}
7957
7958
static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, int queue,
7959
const struct ieee80211_tx_queue_params *params)
7960
{
7961
struct iwl4965_priv *priv = hw->priv;
7962
#ifdef CONFIG_IWL4965_QOS
7963
unsigned long flags;
7964
int q;
7965
#endif /* CONFIG_IWL4965_QOS */
7966
7967
IWL_DEBUG_MAC80211("enter\n");
7968
7969
if (!iwl4965_is_ready_rf(priv)) {
7970
IWL_DEBUG_MAC80211("leave - RF not ready\n");
7971
return -EIO;
7972
}
7973
7974
if (queue >= AC_NUM) {
7975
IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7976
return 0;
7977
}
7978
7979
#ifdef CONFIG_IWL4965_QOS
7980
if (!priv->qos_data.qos_enable) {
7981
priv->qos_data.qos_active = 0;
7982
IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7983
return 0;
7984
}
7985
q = AC_NUM - 1 - queue;
7986
7987
spin_lock_irqsave(&priv->lock, flags);
7988
7989
priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
7990
priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
7991
priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
7992
priv->qos_data.def_qos_parm.ac[q].edca_txop =
7993
cpu_to_le16((params->burst_time * 100));
7994
7995
priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
7996
priv->qos_data.qos_active = 1;
7997
7998
spin_unlock_irqrestore(&priv->lock, flags);
7999
8000
mutex_lock(&priv->mutex);
8001
if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
8002
iwl4965_activate_qos(priv, 1);
8003
else if (priv->assoc_id && iwl4965_is_associated(priv))
8004
iwl4965_activate_qos(priv, 0);
8005
8006
mutex_unlock(&priv->mutex);
8007
8008
#endif /*CONFIG_IWL4965_QOS */
8009
8010
IWL_DEBUG_MAC80211("leave\n");
8011
return 0;
8012
}
8013
8014
static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
8015
struct ieee80211_tx_queue_stats *stats)
8016
{
8017
struct iwl4965_priv *priv = hw->priv;
8018
int i, avail;
8019
struct iwl4965_tx_queue *txq;
8020
struct iwl4965_queue *q;
8021
unsigned long flags;
8022
8023
IWL_DEBUG_MAC80211("enter\n");
8024
8025
if (!iwl4965_is_ready_rf(priv)) {
8026
IWL_DEBUG_MAC80211("leave - RF not ready\n");
8027
return -EIO;
8028
}
8029
8030
spin_lock_irqsave(&priv->lock, flags);
8031
8032
for (i = 0; i < AC_NUM; i++) {
8033
txq = &priv->txq[i];
8034
q = &txq->q;
8035
avail = iwl4965_queue_space(q);
8036
8037
stats->data[i].len = q->n_window - avail;
8038
stats->data[i].limit = q->n_window - q->high_mark;
8039
stats->data[i].count = q->n_window;
8040
8041
}
8042
spin_unlock_irqrestore(&priv->lock, flags);
8043
8044
IWL_DEBUG_MAC80211("leave\n");
8045
8046
return 0;
8047
}
8048
8049
static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
8050
struct ieee80211_low_level_stats *stats)
8051
{
8052
IWL_DEBUG_MAC80211("enter\n");
8053
IWL_DEBUG_MAC80211("leave\n");
8054
8055
return 0;
8056
}
8057
8058
static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
8059
{
8060
IWL_DEBUG_MAC80211("enter\n");
8061
IWL_DEBUG_MAC80211("leave\n");
8062
8063
return 0;
8064
}
8065
8066
static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
8067
{
8068
struct iwl4965_priv *priv = hw->priv;
8069
unsigned long flags;
8070
8071
mutex_lock(&priv->mutex);
8072
IWL_DEBUG_MAC80211("enter\n");
8073
8074
priv->lq_mngr.lq_ready = 0;
8075
#ifdef CONFIG_IWL4965_HT
8076
spin_lock_irqsave(&priv->lock, flags);
8077
memset(&priv->current_assoc_ht, 0, sizeof(struct sta_ht_info));
8078
spin_unlock_irqrestore(&priv->lock, flags);
8079
#ifdef CONFIG_IWL4965_HT_AGG
8080
/* if (priv->lq_mngr.agg_ctrl.granted_ba)
8081
iwl4965_turn_off_agg(priv, TID_ALL_SPECIFIED);*/
8082
8083
memset(&(priv->lq_mngr.agg_ctrl), 0, sizeof(struct iwl4965_agg_control));
8084
priv->lq_mngr.agg_ctrl.tid_traffic_load_threshold = 10;
8085
priv->lq_mngr.agg_ctrl.ba_timeout = 5000;
8086
priv->lq_mngr.agg_ctrl.auto_agg = 1;
8087
8088
if (priv->lq_mngr.agg_ctrl.auto_agg)
8089
priv->lq_mngr.agg_ctrl.requested_ba = TID_ALL_ENABLED;
8090
#endif /*CONFIG_IWL4965_HT_AGG */
8091
#endif /* CONFIG_IWL4965_HT */
8092
8093
#ifdef CONFIG_IWL4965_QOS
8094
iwl4965_reset_qos(priv);
8095
#endif
8096
8097
cancel_delayed_work(&priv->post_associate);
8098
8099
spin_lock_irqsave(&priv->lock, flags);
8100
priv->assoc_id = 0;
8101
priv->assoc_capability = 0;
8102
priv->call_post_assoc_from_beacon = 0;
8103
priv->assoc_station_added = 0;
8104
8105
/* new association get rid of ibss beacon skb */
8106
if (priv->ibss_beacon)
8107
dev_kfree_skb(priv->ibss_beacon);
8108
8109
priv->ibss_beacon = NULL;
8110
8111
priv->beacon_int = priv->hw->conf.beacon_int;
8112
priv->timestamp1 = 0;
8113
priv->timestamp0 = 0;
8114
if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
8115
priv->beacon_int = 0;
8116
8117
spin_unlock_irqrestore(&priv->lock, flags);
8118
8119
if (!iwl4965_is_ready_rf(priv)) {
8120
IWL_DEBUG_MAC80211("leave - not ready\n");
8121
mutex_unlock(&priv->mutex);
8122
return;
8123
}
8124
8125
/* we are restarting association process
8126
* clear RXON_FILTER_ASSOC_MSK bit
8127
*/
8128
if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
8129
iwl4965_scan_cancel_timeout(priv, 100);
8130
priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
8131
iwl4965_commit_rxon(priv);
8132
}
8133
8134
/* Per mac80211.h: This is only used in IBSS mode... */
8135
if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
8136
8137
IWL_DEBUG_MAC80211("leave - not in IBSS\n");
8138
mutex_unlock(&priv->mutex);
8139
return;
8140
}
8141
8142
priv->only_active_channel = 0;
8143
8144
iwl4965_set_rate(priv);
8145
8146
mutex_unlock(&priv->mutex);
8147
8148
IWL_DEBUG_MAC80211("leave\n");
8149
8150
}
8151
8152
static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
8153
struct ieee80211_tx_control *control)
8154
{
8155
struct iwl4965_priv *priv = hw->priv;
8156
unsigned long flags;
8157
8158
mutex_lock(&priv->mutex);
8159
IWL_DEBUG_MAC80211("enter\n");
8160
8161
if (!iwl4965_is_ready_rf(priv)) {
8162
IWL_DEBUG_MAC80211("leave - RF not ready\n");
8163
mutex_unlock(&priv->mutex);
8164
return -EIO;
8165
}
8166
8167
if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
8168
IWL_DEBUG_MAC80211("leave - not IBSS\n");
8169
mutex_unlock(&priv->mutex);
8170
return -EIO;
8171
}
8172
8173
spin_lock_irqsave(&priv->lock, flags);
8174
8175
if (priv->ibss_beacon)
8176
dev_kfree_skb(priv->ibss_beacon);
8177
8178
priv->ibss_beacon = skb;
8179
8180
priv->assoc_id = 0;
8181
8182
IWL_DEBUG_MAC80211("leave\n");
8183
spin_unlock_irqrestore(&priv->lock, flags);
8184
8185
#ifdef CONFIG_IWL4965_QOS
8186
iwl4965_reset_qos(priv);
8187
#endif
8188
8189
queue_work(priv->workqueue, &priv->post_associate.work);
8190
8191
mutex_unlock(&priv->mutex);
8192
8193
return 0;
8194
}
8195
8196
#ifdef CONFIG_IWL4965_HT
8197
union ht_cap_info {
8198
struct {
8199
u16 advanced_coding_cap :1;
8200
u16 supported_chan_width_set :1;
8201
u16 mimo_power_save_mode :2;
8202
u16 green_field :1;
8203
u16 short_GI20 :1;
8204
u16 short_GI40 :1;
8205
u16 tx_stbc :1;
8206
u16 rx_stbc :1;
8207
u16 beam_forming :1;
8208
u16 delayed_ba :1;
8209
u16 maximal_amsdu_size :1;
8210
u16 cck_mode_at_40MHz :1;
8211
u16 psmp_support :1;
8212
u16 stbc_ctrl_frame_support :1;
8213
u16 sig_txop_protection_support :1;
8214
};
8215
u16 val;
8216
} __attribute__ ((packed));
8217
8218
union ht_param_info{
8219
struct {
8220
u8 max_rx_ampdu_factor :2;
8221
u8 mpdu_density :3;
8222
u8 reserved :3;
8223
};
8224
u8 val;
8225
} __attribute__ ((packed));
8226
8227
union ht_exra_param_info {
8228
struct {
8229
u8 ext_chan_offset :2;
8230
u8 tx_chan_width :1;
8231
u8 rifs_mode :1;
8232
u8 controlled_access_only :1;
8233
u8 service_interval_granularity :3;
8234
};
8235
u8 val;
8236
} __attribute__ ((packed));
8237
8238
union ht_operation_mode{
8239
struct {
8240
u16 op_mode :2;
8241
u16 non_GF :1;
8242
u16 reserved :13;
8243
};
8244
u16 val;
8245
} __attribute__ ((packed));
8246
8247
8248
static int sta_ht_info_init(struct ieee80211_ht_capability *ht_cap,
8249
struct ieee80211_ht_additional_info *ht_extra,
8250
struct sta_ht_info *ht_info_ap,
8251
struct sta_ht_info *ht_info)
8252
{
8253
union ht_cap_info cap;
8254
union ht_operation_mode op_mode;
8255
union ht_param_info param_info;
8256
union ht_exra_param_info extra_param_info;
8257
8258
IWL_DEBUG_MAC80211("enter: \n");
8259
8260
if (!ht_info) {
8261
IWL_DEBUG_MAC80211("leave: ht_info is NULL\n");
8262
return -1;
8263
}
8264
8265
if (ht_cap) {
8266
cap.val = (u16) le16_to_cpu(ht_cap->capabilities_info);
8267
param_info.val = ht_cap->mac_ht_params_info;
8268
ht_info->is_ht = 1;
8269
if (cap.short_GI20)
8270
ht_info->sgf |= 0x1;
8271
if (cap.short_GI40)
8272
ht_info->sgf |= 0x2;
8273
ht_info->is_green_field = cap.green_field;
8274
ht_info->max_amsdu_size = cap.maximal_amsdu_size;
8275
ht_info->supported_chan_width = cap.supported_chan_width_set;
8276
ht_info->tx_mimo_ps_mode = cap.mimo_power_save_mode;
8277
memcpy(ht_info->supp_rates, ht_cap->supported_mcs_set, 16);
8278
8279
ht_info->ampdu_factor = param_info.max_rx_ampdu_factor;
8280
ht_info->mpdu_density = param_info.mpdu_density;
8281
8282
IWL_DEBUG_MAC80211("SISO mask 0x%X MIMO mask 0x%X \n",
8283
ht_cap->supported_mcs_set[0],
8284
ht_cap->supported_mcs_set[1]);
8285
8286
if (ht_info_ap) {
8287
ht_info->control_channel = ht_info_ap->control_channel;
8288
ht_info->extension_chan_offset =
8289
ht_info_ap->extension_chan_offset;
8290
ht_info->tx_chan_width = ht_info_ap->tx_chan_width;
8291
ht_info->operating_mode = ht_info_ap->operating_mode;
8292
}
8293
8294
if (ht_extra) {
8295
extra_param_info.val = ht_extra->ht_param;
8296
ht_info->control_channel = ht_extra->control_chan;
8297
ht_info->extension_chan_offset =
8298
extra_param_info.ext_chan_offset;
8299
ht_info->tx_chan_width = extra_param_info.tx_chan_width;
8300
op_mode.val = (u16)
8301
le16_to_cpu(ht_extra->operation_mode);
8302
ht_info->operating_mode = op_mode.op_mode;
8303
IWL_DEBUG_MAC80211("control channel %d\n",
8304
ht_extra->control_chan);
8305
}
8306
} else
8307
ht_info->is_ht = 0;
8308
8309
IWL_DEBUG_MAC80211("leave\n");
8310
return 0;
8311
}
8312
8313
static int iwl4965_mac_conf_ht(struct ieee80211_hw *hw,
8314
struct ieee80211_ht_capability *ht_cap,
8315
struct ieee80211_ht_additional_info *ht_extra)
8316
{
8317
struct iwl4965_priv *priv = hw->priv;
8318
int rs;
8319
8320
IWL_DEBUG_MAC80211("enter: \n");
8321
8322
rs = sta_ht_info_init(ht_cap, ht_extra, NULL, &priv->current_assoc_ht);
8323
iwl4965_set_rxon_chain(priv);
8324
8325
if (priv && priv->assoc_id &&
8326
(priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
8327
unsigned long flags;
8328
8329
spin_lock_irqsave(&priv->lock, flags);
8330
if (priv->beacon_int)
8331
queue_work(priv->workqueue, &priv->post_associate.work);
8332
else
8333
priv->call_post_assoc_from_beacon = 1;
8334
spin_unlock_irqrestore(&priv->lock, flags);
8335
}
8336
8337
IWL_DEBUG_MAC80211("leave: control channel %d\n",
8338
ht_extra->control_chan);
8339
return rs;
8340
8341
}
8342
8343
static void iwl4965_set_ht_capab(struct ieee80211_hw *hw,
8344
struct ieee80211_ht_capability *ht_cap,
8345
u8 use_wide_chan)
8346
{
8347
union ht_cap_info cap;
8348
union ht_param_info param_info;
8349
8350
memset(&cap, 0, sizeof(union ht_cap_info));
8351
memset(¶m_info, 0, sizeof(union ht_param_info));
8352
8353
cap.maximal_amsdu_size = HT_IE_MAX_AMSDU_SIZE_4K;
8354
cap.green_field = 1;
8355
cap.short_GI20 = 1;
8356
cap.short_GI40 = 1;
8357
cap.supported_chan_width_set = use_wide_chan;
8358
cap.mimo_power_save_mode = 0x3;
8359
8360
param_info.max_rx_ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
8361
param_info.mpdu_density = CFG_HT_MPDU_DENSITY_DEF;
8362
ht_cap->capabilities_info = (__le16) cpu_to_le16(cap.val);
8363
ht_cap->mac_ht_params_info = (u8) param_info.val;
8364
8365
ht_cap->supported_mcs_set[0] = 0xff;
8366
ht_cap->supported_mcs_set[1] = 0xff;
8367
ht_cap->supported_mcs_set[4] =
8368
(cap.supported_chan_width_set) ? 0x1: 0x0;
8369
}
8370
8371
static void iwl4965_mac_get_ht_capab(struct ieee80211_hw *hw,
8372
struct ieee80211_ht_capability *ht_cap)
8373
{
8374
u8 use_wide_channel = 1;
8375
struct iwl4965_priv *priv = hw->priv;
8376
8377
IWL_DEBUG_MAC80211("enter: \n");
8378
if (priv->channel_width != IWL_CHANNEL_WIDTH_40MHZ)
8379
use_wide_channel = 0;
8380
8381
/* no fat tx allowed on 2.4GHZ */
8382
if (priv->phymode != MODE_IEEE80211A)
8383
use_wide_channel = 0;
8384
8385
iwl4965_set_ht_capab(hw, ht_cap, use_wide_channel);
8386
IWL_DEBUG_MAC80211("leave: \n");
8387
}
8388
#endif /*CONFIG_IWL4965_HT*/
8389
8390
/*****************************************************************************
8391
*
8392
* sysfs attributes
8393
*
8394
*****************************************************************************/
8395
8396
#ifdef CONFIG_IWL4965_DEBUG
8397
8398
/*
8399
* The following adds a new attribute to the sysfs representation
8400
* of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
8401
* used for controlling the debug level.
8402
*
8403
* See the level definitions in iwl for details.
8404
*/
8405
8406
static ssize_t show_debug_level(struct device_driver *d, char *buf)
8407
{
8408
return sprintf(buf, "0x%08X\n", iwl4965_debug_level);
8409
}
8410
static ssize_t store_debug_level(struct device_driver *d,
8411
const char *buf, size_t count)
8412
{
8413
char *p = (char *)buf;
8414
u32 val;
8415
8416
val = simple_strtoul(p, &p, 0);
8417
if (p == buf)
8418
printk(KERN_INFO DRV_NAME
8419
": %s is not in hex or decimal form.\n", buf);
8420
else
8421
iwl4965_debug_level = val;
8422
8423
return strnlen(buf, count);
8424
}
8425
8426
static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
8427
show_debug_level, store_debug_level);
8428
8429
#endif /* CONFIG_IWL4965_DEBUG */
8430
8431
static ssize_t show_rf_kill(struct device *d,
8432
struct device_attribute *attr, char *buf)
8433
{
8434
/*
8435
* 0 - RF kill not enabled
8436
* 1 - SW based RF kill active (sysfs)
8437
* 2 - HW based RF kill active
8438
* 3 - Both HW and SW based RF kill active
8439
*/
8440
struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8441
int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) |
8442
(test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0);
8443
8444
return sprintf(buf, "%i\n", val);
8445
}
8446
8447
static ssize_t store_rf_kill(struct device *d,
8448
struct device_attribute *attr,
8449
const char *buf, size_t count)
8450
{
8451
struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8452
8453
mutex_lock(&priv->mutex);
8454
iwl4965_radio_kill_sw(priv, buf[0] == '1');
8455
mutex_unlock(&priv->mutex);
8456
8457
return count;
8458
}
8459
8460
static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);
8461
8462
static ssize_t show_temperature(struct device *d,
8463
struct device_attribute *attr, char *buf)
8464
{
8465
struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8466
8467
if (!iwl4965_is_alive(priv))
8468
return -EAGAIN;
8469
8470
return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
8471
}
8472
8473
static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
8474
8475
static ssize_t show_rs_window(struct device *d,
8476
struct device_attribute *attr,
8477
char *buf)
8478
{
8479
struct iwl4965_priv *priv = d->driver_data;
8480
return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
8481
}
8482
static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
8483
8484
static ssize_t show_tx_power(struct device *d,
8485
struct device_attribute *attr, char *buf)
8486
{
8487
struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8488
return sprintf(buf, "%d\n", priv->user_txpower_limit);
8489
}
8490
8491
static ssize_t store_tx_power(struct device *d,
8492
struct device_attribute *attr,
8493
const char *buf, size_t count)
8494
{
8495
struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8496
char *p = (char *)buf;
8497
u32 val;
8498
8499
val = simple_strtoul(p, &p, 10);
8500
if (p == buf)
8501
printk(KERN_INFO DRV_NAME
8502
": %s is not in decimal form.\n", buf);
8503
else
8504
iwl4965_hw_reg_set_txpower(priv, val);
8505
8506
return count;
8507
}
8508
8509
static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
8510
8511
static ssize_t show_flags(struct device *d,
8512
struct device_attribute *attr, char *buf)
8513
{
8514
struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8515
8516
return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
8517
}
8518
8519
static ssize_t store_flags(struct device *d,
8520
struct device_attribute *attr,
8521
const char *buf, size_t count)
8522
{
8523
struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8524
u32 flags = simple_strtoul(buf, NULL, 0);
8525
8526
mutex_lock(&priv->mutex);
8527
if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
8528
/* Cancel any currently running scans... */
8529
if (iwl4965_scan_cancel_timeout(priv, 100))
8530
IWL_WARNING("Could not cancel scan.\n");
8531
else {
8532
IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
8533
flags);
8534
priv->staging_rxon.flags = cpu_to_le32(flags);
8535
iwl4965_commit_rxon(priv);
8536
}
8537
}
8538
mutex_unlock(&priv->mutex);
8539
8540
return count;
8541
}
8542
8543
static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
8544
8545
static ssize_t show_filter_flags(struct device *d,
8546
struct device_attribute *attr, char *buf)
8547
{
8548
struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8549
8550
return sprintf(buf, "0x%04X\n",
8551
le32_to_cpu(priv->active_rxon.filter_flags));
8552
}
8553
8554
static ssize_t store_filter_flags(struct device *d,
8555
struct device_attribute *attr,
8556
const char *buf, size_t count)
8557
{
8558
struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8559
u32 filter_flags = simple_strtoul(buf, NULL, 0);
8560
8561
mutex_lock(&priv->mutex);
8562
if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
8563
/* Cancel any currently running scans... */
8564
if (iwl4965_scan_cancel_timeout(priv, 100))
8565
IWL_WARNING("Could not cancel scan.\n");
8566
else {
8567
IWL_DEBUG_INFO("Committing rxon.filter_flags = "
8568
"0x%04X\n", filter_flags);
8569
priv->staging_rxon.filter_flags =
8570
cpu_to_le32(filter_flags);
8571
iwl4965_commit_rxon(priv);
8572
}
8573
}
8574
mutex_unlock(&priv->mutex);
8575
8576
return count;
8577
}
8578
8579
static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
8580
store_filter_flags);
8581
8582
static ssize_t show_tune(struct device *d,
8583
struct device_attribute *attr, char *buf)
8584
{
8585
struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8586
8587
return sprintf(buf, "0x%04X\n",
8588
(priv->phymode << 8) |
8589
le16_to_cpu(priv->active_rxon.channel));
8590
}
8591
8592
static void iwl4965_set_flags_for_phymode(struct iwl4965_priv *priv, u8 phymode);
8593
8594
static ssize_t store_tune(struct device *d,
8595
struct device_attribute *attr,
8596
const char *buf, size_t count)
8597
{
8598
struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8599
char *p = (char *)buf;
8600
u16 tune = simple_strtoul(p, &p, 0);
8601
u8 phymode = (tune >> 8) & 0xff;
8602
u16 channel = tune & 0xff;
8603
8604
IWL_DEBUG_INFO("Tune request to:%d channel:%d\n", phymode, channel);
8605
8606
mutex_lock(&priv->mutex);
8607
if ((le16_to_cpu(priv->staging_rxon.channel) != channel) ||
8608
(priv->phymode != phymode)) {
8609
const struct iwl4965_channel_info *ch_info;
8610
8611
ch_info = iwl4965_get_channel_info(priv, phymode, channel);
8612
if (!ch_info) {
8613
IWL_WARNING("Requested invalid phymode/channel "
8614
"combination: %d %d\n", phymode, channel);
8615
mutex_unlock(&priv->mutex);
8616
return -EINVAL;
8617
}
8618
8619
/* Cancel any currently running scans... */
8620
if (iwl4965_scan_cancel_timeout(priv, 100))
8621
IWL_WARNING("Could not cancel scan.\n");
8622
else {
8623
IWL_DEBUG_INFO("Committing phymode and "
8624
"rxon.channel = %d %d\n",
8625
phymode, channel);
8626
8627
iwl4965_set_rxon_channel(priv, phymode, channel);
8628
iwl4965_set_flags_for_phymode(priv, phymode);
8629
8630
iwl4965_set_rate(priv);
8631
iwl4965_commit_rxon(priv);
8632
}
8633
}
8634
mutex_unlock(&priv->mutex);
8635
8636
return count;
8637
}
8638
8639
static DEVICE_ATTR(tune, S_IWUSR | S_IRUGO, show_tune, store_tune);
8640
8641
#ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
8642
8643
static ssize_t show_measurement(struct device *d,
8644
struct device_attribute *attr, char *buf)
8645
{
8646
struct iwl4965_priv *priv = dev_get_drvdata(d);
8647
struct iwl4965_spectrum_notification measure_report;
8648
u32 size = sizeof(measure_report), len = 0, ofs = 0;
8649
u8 *data = (u8 *) & measure_report;
8650
unsigned long flags;
8651
8652
spin_lock_irqsave(&priv->lock, flags);
8653
if (!(priv->measurement_status & MEASUREMENT_READY)) {
8654
spin_unlock_irqrestore(&priv->lock, flags);
8655
return 0;
8656
}
8657
memcpy(&measure_report, &priv->measure_report, size);
8658
priv->measurement_status = 0;
8659
spin_unlock_irqrestore(&priv->lock, flags);
8660
8661
while (size && (PAGE_SIZE - len)) {
8662
hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8663
PAGE_SIZE - len, 1);
8664
len = strlen(buf);
8665
if (PAGE_SIZE - len)
8666
buf[len++] = '\n';
8667
8668
ofs += 16;
8669
size -= min(size, 16U);
8670
}
8671
8672
return len;
8673
}
8674
8675
static ssize_t store_measurement(struct device *d,
8676
struct device_attribute *attr,
8677
const char *buf, size_t count)
8678
{
8679
struct iwl4965_priv *priv = dev_get_drvdata(d);
8680
struct ieee80211_measurement_params params = {
8681
.channel = le16_to_cpu(priv->active_rxon.channel),
8682
.start_time = cpu_to_le64(priv->last_tsf),
8683
.duration = cpu_to_le16(1),
8684
};
8685
u8 type = IWL_MEASURE_BASIC;
8686
u8 buffer[32];
8687
u8 channel;
8688
8689
if (count) {
8690
char *p = buffer;
8691
strncpy(buffer, buf, min(sizeof(buffer), count));
8692
channel = simple_strtoul(p, NULL, 0);
8693
if (channel)
8694
params.channel = channel;
8695
8696
p = buffer;
8697
while (*p && *p != ' ')
8698
p++;
8699
if (*p)
8700
type = simple_strtoul(p + 1, NULL, 0);
8701
}
8702
8703
IWL_DEBUG_INFO("Invoking measurement of type %d on "
8704
"channel %d (for '%s')\n", type, params.channel, buf);
8705
iwl4965_get_measurement(priv, ¶ms, type);
8706
8707
return count;
8708
}
8709
8710
static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
8711
show_measurement, store_measurement);
8712
#endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
8713
8714
static ssize_t store_retry_rate(struct device *d,
8715
struct device_attribute *attr,
8716
const char *buf, size_t count)
8717
{
8718
struct iwl4965_priv *priv = dev_get_drvdata(d);
8719
8720
priv->retry_rate = simple_strtoul(buf, NULL, 0);
8721
if (priv->retry_rate <= 0)
8722
priv->retry_rate = 1;
8723
8724
return count;
8725
}
8726
8727
static ssize_t show_retry_rate(struct device *d,
8728
struct device_attribute *attr, char *buf)
8729
{
8730
struct iwl4965_priv *priv = dev_get_drvdata(d);
8731
return sprintf(buf, "%d", priv->retry_rate);
8732
}
8733
8734
static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
8735
store_retry_rate);
8736
8737
static ssize_t store_power_level(struct device *d,
8738
struct device_attribute *attr,
8739
const char *buf, size_t count)
8740
{
8741
struct iwl4965_priv *priv = dev_get_drvdata(d);
8742
int rc;
8743
int mode;
8744
8745
mode = simple_strtoul(buf, NULL, 0);
8746
mutex_lock(&priv->mutex);
8747
8748
if (!iwl4965_is_ready(priv)) {
8749
rc = -EAGAIN;
8750
goto out;
8751
}
8752
8753
if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
8754
mode = IWL_POWER_AC;
8755
else
8756
mode |= IWL_POWER_ENABLED;
8757
8758
if (mode != priv->power_mode) {
8759
rc = iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(mode));
8760
if (rc) {
8761
IWL_DEBUG_MAC80211("failed setting power mode.\n");
8762
goto out;
8763
}
8764
priv->power_mode = mode;
8765
}
8766
8767
rc = count;
8768
8769
out:
8770
mutex_unlock(&priv->mutex);
8771
return rc;
8772
}
8773
8774
#define MAX_WX_STRING 80
8775
8776
/* Values are in microsecond */
8777
static const s32 timeout_duration[] = {
8778
350000,
8779
250000,
8780
75000,
8781
37000,
8782
25000,
8783
};
8784
static const s32 period_duration[] = {
8785
400000,
8786
700000,
8787
1000000,
8788
1000000,
8789
1000000
8790
};
8791
8792
static ssize_t show_power_level(struct device *d,
8793
struct device_attribute *attr, char *buf)
8794
{
8795
struct iwl4965_priv *priv = dev_get_drvdata(d);
8796
int level = IWL_POWER_LEVEL(priv->power_mode);
8797
char *p = buf;
8798
8799
p += sprintf(p, "%d ", level);
8800
switch (level) {
8801
case IWL_POWER_MODE_CAM:
8802
case IWL_POWER_AC:
8803
p += sprintf(p, "(AC)");
8804
break;
8805
case IWL_POWER_BATTERY:
8806
p += sprintf(p, "(BATTERY)");
8807
break;
8808
default:
8809
p += sprintf(p,
8810
"(Timeout %dms, Period %dms)",
8811
timeout_duration[level - 1] / 1000,
8812
period_duration[level - 1] / 1000);
8813
}
8814
8815
if (!(priv->power_mode & IWL_POWER_ENABLED))
8816
p += sprintf(p, " OFF\n");
8817
else
8818
p += sprintf(p, " \n");
8819
8820
return (p - buf + 1);
8821
8822
}
8823
8824
static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
8825
store_power_level);
8826
8827
static ssize_t show_channels(struct device *d,
8828
struct device_attribute *attr, char *buf)
8829
{
8830
struct iwl4965_priv *priv = dev_get_drvdata(d);
8831
int len = 0, i;
8832
struct ieee80211_channel *channels = NULL;
8833
const struct ieee80211_hw_mode *hw_mode = NULL;
8834
int count = 0;
8835
8836
if (!iwl4965_is_ready(priv))
8837
return -EAGAIN;
8838
8839
hw_mode = iwl4965_get_hw_mode(priv, MODE_IEEE80211G);
8840
if (!hw_mode)
8841
hw_mode = iwl4965_get_hw_mode(priv, MODE_IEEE80211B);
8842
if (hw_mode) {
8843
channels = hw_mode->channels;
8844
count = hw_mode->num_channels;
8845
}
8846
8847
len +=
8848
sprintf(&buf[len],
8849
"Displaying %d channels in 2.4GHz band "
8850
"(802.11bg):\n", count);
8851
8852
for (i = 0; i < count; i++)
8853
len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8854
channels[i].chan,
8855
channels[i].power_level,
8856
channels[i].
8857
flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8858
" (IEEE 802.11h required)" : "",
8859
(!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8860
|| (channels[i].
8861
flag &
8862
IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8863
", IBSS",
8864
channels[i].
8865
flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8866
"active/passive" : "passive only");
8867
8868
hw_mode = iwl4965_get_hw_mode(priv, MODE_IEEE80211A);
8869
if (hw_mode) {
8870
channels = hw_mode->channels;
8871
count = hw_mode->num_channels;
8872
} else {
8873
channels = NULL;
8874
count = 0;
8875
}
8876
8877
len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
8878
"(802.11a):\n", count);
8879
8880
for (i = 0; i < count; i++)
8881
len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8882
channels[i].chan,
8883
channels[i].power_level,
8884
channels[i].
8885
flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8886
" (IEEE 802.11h required)" : "",
8887
(!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8888
|| (channels[i].
8889
flag &
8890
IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8891
", IBSS",
8892
channels[i].
8893
flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8894
"active/passive" : "passive only");
8895
8896
return len;
8897
}
8898
8899
static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
8900
8901
static ssize_t show_statistics(struct device *d,
8902
struct device_attribute *attr, char *buf)
8903
{
8904
struct iwl4965_priv *priv = dev_get_drvdata(d);
8905
u32 size = sizeof(struct iwl4965_notif_statistics);
8906
u32 len = 0, ofs = 0;
8907
u8 *data = (u8 *) & priv->statistics;
8908
int rc = 0;
8909
8910
if (!iwl4965_is_alive(priv))
8911
return -EAGAIN;
8912
8913
mutex_lock(&priv->mutex);
8914
rc = iwl4965_send_statistics_request(priv);
8915
mutex_unlock(&priv->mutex);
8916
8917
if (rc) {
8918
len = sprintf(buf,
8919
"Error sending statistics request: 0x%08X\n", rc);
8920
return len;
8921
}
8922
8923
while (size && (PAGE_SIZE - len)) {
8924
hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8925
PAGE_SIZE - len, 1);
8926
len = strlen(buf);
8927
if (PAGE_SIZE - len)
8928
buf[len++] = '\n';
8929
8930
ofs += 16;
8931
size -= min(size, 16U);
8932
}
8933
8934
return len;
8935
}
8936
8937
static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
8938
8939
static ssize_t show_antenna(struct device *d,
8940
struct device_attribute *attr, char *buf)
8941
{
8942
struct iwl4965_priv *priv = dev_get_drvdata(d);
8943
8944
if (!iwl4965_is_alive(priv))
8945
return -EAGAIN;
8946
8947
return sprintf(buf, "%d\n", priv->antenna);
8948
}
8949
8950
static ssize_t store_antenna(struct device *d,
8951
struct device_attribute *attr,
8952
const char *buf, size_t count)
8953
{
8954
int ant;
8955
struct iwl4965_priv *priv = dev_get_drvdata(d);
8956
8957
if (count == 0)
8958
return 0;
8959
8960
if (sscanf(buf, "%1i", &ant) != 1) {
8961
IWL_DEBUG_INFO("not in hex or decimal form.\n");
8962
return count;
8963
}
8964
8965
if ((ant >= 0) && (ant <= 2)) {
8966
IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
8967
priv->antenna = (enum iwl4965_antenna)ant;
8968
} else
8969
IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
8970
8971
8972
return count;
8973
}
8974
8975
static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
8976
8977
static ssize_t show_status(struct device *d,
8978
struct device_attribute *attr, char *buf)
8979
{
8980
struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8981
if (!iwl4965_is_alive(priv))
8982
return -EAGAIN;
8983
return sprintf(buf, "0x%08x\n", (int)priv->status);
8984
}
8985
8986
static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
8987
8988
static ssize_t dump_error_log(struct device *d,
8989
struct device_attribute *attr,
8990
const char *buf, size_t count)
8991
{
8992
char *p = (char *)buf;
8993
8994
if (p[0] == '1')
8995
iwl4965_dump_nic_error_log((struct iwl4965_priv *)d->driver_data);
8996
8997
return strnlen(buf, count);
8998
}
8999
9000
static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
9001
9002
static ssize_t dump_event_log(struct device *d,
9003
struct device_attribute *attr,
9004
const char *buf, size_t count)
9005
{
9006
char *p = (char *)buf;
9007
9008
if (p[0] == '1')
9009
iwl4965_dump_nic_event_log((struct iwl4965_priv *)d->driver_data);
9010
9011
return strnlen(buf, count);
9012
}
9013
9014
static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
9015
9016
/*****************************************************************************
9017
*
9018
* driver setup and teardown
9019
*
9020
*****************************************************************************/
9021
9022
static void iwl4965_setup_deferred_work(struct iwl4965_priv *priv)
9023
{
9024
priv->workqueue = create_workqueue(DRV_NAME);
9025
9026
init_waitqueue_head(&priv->wait_command_queue);
9027
9028
INIT_WORK(&priv->up, iwl4965_bg_up);
9029
INIT_WORK(&priv->restart, iwl4965_bg_restart);
9030
INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
9031
INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
9032
INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
9033
INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
9034
INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
9035
INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
9036
INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
9037
INIT_DELAYED_WORK(&priv->init_alive_start, iwl4965_bg_init_alive_start);
9038
INIT_DELAYED_WORK(&priv->alive_start, iwl4965_bg_alive_start);
9039
INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
9040
9041
iwl4965_hw_setup_deferred_work(priv);
9042
9043
tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
9044
iwl4965_irq_tasklet, (unsigned long)priv);
9045
}
9046
9047
static void iwl4965_cancel_deferred_work(struct iwl4965_priv *priv)
9048
{
9049
iwl4965_hw_cancel_deferred_work(priv);
9050
9051
cancel_delayed_work(&priv->init_alive_start);
9052
cancel_delayed_work(&priv->scan_check);
9053
cancel_delayed_work(&priv->alive_start);
9054
cancel_delayed_work(&priv->post_associate);
9055
cancel_work_sync(&priv->beacon_update);
9056
}
9057
9058
static struct attribute *iwl4965_sysfs_entries[] = {
9059
&dev_attr_antenna.attr,
9060
&dev_attr_channels.attr,
9061
&dev_attr_dump_errors.attr,
9062
&dev_attr_dump_events.attr,
9063
&dev_attr_flags.attr,
9064
&dev_attr_filter_flags.attr,
9065
#ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
9066
&dev_attr_measurement.attr,
9067
#endif
9068
&dev_attr_power_level.attr,
9069
&dev_attr_retry_rate.attr,
9070
&dev_attr_rf_kill.attr,
9071
&dev_attr_rs_window.attr,
9072
&dev_attr_statistics.attr,
9073
&dev_attr_status.attr,
9074
&dev_attr_temperature.attr,
9075
&dev_attr_tune.attr,
9076
&dev_attr_tx_power.attr,
9077
9078
NULL
9079
};
9080
9081
static struct attribute_group iwl4965_attribute_group = {
9082
.name = NULL, /* put in device directory */
9083
.attrs = iwl4965_sysfs_entries,
9084
};
9085
9086
static struct ieee80211_ops iwl4965_hw_ops = {
9087
.tx = iwl4965_mac_tx,
9088
.open = iwl4965_mac_open,
9089
.stop = iwl4965_mac_stop,
9090
.add_interface = iwl4965_mac_add_interface,
9091
.remove_interface = iwl4965_mac_remove_interface,
9092
.config = iwl4965_mac_config,
9093
.config_interface = iwl4965_mac_config_interface,
9094
.set_key = iwl4965_mac_set_key,
9095
.get_stats = iwl4965_mac_get_stats,
9096
.get_tx_stats = iwl4965_mac_get_tx_stats,
9097
.conf_tx = iwl4965_mac_conf_tx,
9098
.get_tsf = iwl4965_mac_get_tsf,
9099
.reset_tsf = iwl4965_mac_reset_tsf,
9100
.beacon_update = iwl4965_mac_beacon_update,
9101
#ifdef CONFIG_IWL4965_HT
9102
.conf_ht = iwl4965_mac_conf_ht,
9103
.get_ht_capab = iwl4965_mac_get_ht_capab,
9104
#ifdef CONFIG_IWL4965_HT_AGG
9105
.ht_tx_agg_start = iwl4965_mac_ht_tx_agg_start,
9106
.ht_tx_agg_stop = iwl4965_mac_ht_tx_agg_stop,
9107
.ht_rx_agg_start = iwl4965_mac_ht_rx_agg_start,
9108
.ht_rx_agg_stop = iwl4965_mac_ht_rx_agg_stop,
9109
#endif /* CONFIG_IWL4965_HT_AGG */
9110
#endif /* CONFIG_IWL4965_HT */
9111
.hw_scan = iwl4965_mac_hw_scan
9112
};
9113
9114
static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
9115
{
9116
int err = 0;
9117
struct iwl4965_priv *priv;
9118
struct ieee80211_hw *hw;
9119
int i;
9120
9121
/* Disabling hardware scan means that mac80211 will perform scans
9122
* "the hard way", rather than using device's scan. */
9123
if (iwl4965_param_disable_hw_scan) {
9124
IWL_DEBUG_INFO("Disabling hw_scan\n");
9125
iwl4965_hw_ops.hw_scan = NULL;
9126
}
9127
9128
if ((iwl4965_param_queues_num > IWL_MAX_NUM_QUEUES) ||
9129
(iwl4965_param_queues_num < IWL_MIN_NUM_QUEUES)) {
9130
IWL_ERROR("invalid queues_num, should be between %d and %d\n",
9131
IWL_MIN_NUM_QUEUES, IWL_MAX_NUM_QUEUES);
9132
err = -EINVAL;
9133
goto out;
9134
}
9135
9136
/* mac80211 allocates memory for this device instance, including
9137
* space for this driver's private structure */
9138
hw = iwlwifi_ieee80211_alloc_hw(sizeof(struct iwl4965_priv), &iwl4965_hw_ops);
9139
if (hw == NULL) {
9140
IWL_ERROR("Can not allocate network device\n");
9141
err = -ENOMEM;
9142
goto out;
9143
}
9144
SET_IEEE80211_DEV(hw, &pdev->dev);
9145
9146
IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
9147
priv = hw->priv;
9148
priv->hw = hw;
9149
9150
priv->pci_dev = pdev;
9151
priv->antenna = (enum iwl4965_antenna)iwl4965_param_antenna;
9152
#ifdef CONFIG_IWL4965_DEBUG
9153
iwl4965_debug_level = iwl4965_param_debug;
9154
atomic_set(&priv->restrict_refcnt, 0);
9155
#endif
9156
priv->retry_rate = 1;
9157
9158
priv->ibss_beacon = NULL;
9159
9160
/* Tell mac80211 and its clients (e.g. Wireless Extensions)
9161
* the range of signal quality values that we'll provide.
9162
* Negative values for level/noise indicate that we'll provide dBm.
9163
* For WE, at least, non-0 values here *enable* display of values
9164
* in app (iwconfig). */
9165
hw->max_rssi = -20; /* signal level, negative indicates dBm */
9166
hw->max_noise = -20; /* noise level, negative indicates dBm */
9167
hw->max_signal = 100; /* link quality indication (%) */
9168
9169
/* Tell mac80211 our Tx characteristics */
9170
hw->flags = IEEE80211_HW_WEP_INCLUDE_IV |
9171
IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE;
9172
9173
/* Default value; 4 EDCA QOS priorities */
9174
hw->queues = 4;
9175
#ifdef CONFIG_IWL4965_HT
9176
#ifdef CONFIG_IWL4965_HT_AGG
9177
/* Enhanced value; more queues, to support 11n aggregation */
9178
hw->queues = 16;
9179
#endif /* CONFIG_IWL4965_HT_AGG */
9180
#endif /* CONFIG_IWL4965_HT */
9181
9182
spin_lock_init(&priv->lock);
9183
spin_lock_init(&priv->power_data.lock);
9184
spin_lock_init(&priv->sta_lock);
9185
spin_lock_init(&priv->hcmd_lock);
9186
spin_lock_init(&priv->lq_mngr.lock);
9187
9188
for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++)
9189
INIT_LIST_HEAD(&priv->ibss_mac_hash[i]);
9190
9191
INIT_LIST_HEAD(&priv->free_frames);
9192
9193
mutex_init(&priv->mutex);
9194
if (pci_enable_device(pdev)) {
9195
err = -ENODEV;
9196
goto out_iwlwifi_ieee80211_free_hw;
9197
}
9198
9199
pci_set_master(pdev);
9200
9201
/* Clear the driver's (not device's) station table */
9202
iwl4965_clear_stations_table(priv);
9203
9204
priv->data_retry_limit = -1;
9205
priv->ieee_channels = NULL;
9206
priv->ieee_rates = NULL;
9207
priv->phymode = -1;
9208
9209
err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
9210
if (!err)
9211
err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
9212
if (err) {
9213
printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n");
9214
goto out_pci_disable_device;
9215
}
9216
9217
pci_set_drvdata(pdev, priv);
9218
err = pci_request_regions(pdev, DRV_NAME);
9219
if (err)
9220
goto out_pci_disable_device;
9221
9222
/* We disable the RETRY_TIMEOUT register (0x41) to keep
9223
* PCI Tx retries from interfering with C3 CPU state */
9224
pci_write_config_byte(pdev, 0x41, 0x00);
9225
9226
priv->hw_base = pci_iomap(pdev, 0, 0);
9227
if (!priv->hw_base) {
9228
err = -ENODEV;
9229
goto out_pci_release_regions;
9230
}
9231
9232
IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
9233
(unsigned long long) pci_resource_len(pdev, 0));
9234
IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
9235
9236
/* Initialize module parameter values here */
9237
9238
/* Disable radio (SW RF KILL) via parameter when loading driver */
9239
if (iwl4965_param_disable) {
9240
set_bit(STATUS_RF_KILL_SW, &priv->status);
9241
IWL_DEBUG_INFO("Radio disabled.\n");
9242
}
9243
9244
priv->iw_mode = IEEE80211_IF_TYPE_STA;
9245
9246
priv->ps_mode = 0;
9247
priv->use_ant_b_for_management_frame = 1; /* start with ant B */
9248
priv->is_ht_enabled = 1;
9249
priv->channel_width = IWL_CHANNEL_WIDTH_40MHZ;
9250
priv->valid_antenna = 0x7; /* assume all 3 connected */
9251
priv->ps_mode = IWL_MIMO_PS_NONE;
9252
9253
/* Choose which receivers/antennas to use */
9254
iwl4965_set_rxon_chain(priv);
9255
9256
printk(KERN_INFO DRV_NAME
9257
": Detected Intel Wireless WiFi Link 4965AGN\n");
9258
9259
/* Device-specific setup */
9260
if (iwl4965_hw_set_hw_setting(priv)) {
9261
IWL_ERROR("failed to set hw settings\n");
9262
goto out_iounmap;
9263
}
9264
9265
#ifdef CONFIG_IWL4965_QOS
9266
if (iwl4965_param_qos_enable)
9267
priv->qos_data.qos_enable = 1;
9268
9269
iwl4965_reset_qos(priv);
9270
9271
priv->qos_data.qos_active = 0;
9272
priv->qos_data.qos_cap.val = 0;
9273
#endif /* CONFIG_IWL4965_QOS */
9274
9275
iwl4965_set_rxon_channel(priv, MODE_IEEE80211G, 6);
9276
iwl4965_setup_deferred_work(priv);
9277
iwl4965_setup_rx_handlers(priv);
9278
9279
priv->rates_mask = IWL_RATES_MASK;
9280
/* If power management is turned on, default to AC mode */
9281
priv->power_mode = IWL_POWER_AC;
9282
priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
9283
9284
iwl4965_disable_interrupts(priv);
9285
9286
err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
9287
if (err) {
9288
IWL_ERROR("failed to create sysfs device attributes\n");
9289
goto out_release_irq;
9290
}
9291
9292
/* nic init */
9293
iwl4965_set_bit(priv, CSR_GIO_CHICKEN_BITS,
9294
CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
9295
9296
iwl4965_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
9297
err = iwl4965_poll_bit(priv, CSR_GP_CNTRL,
9298
CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
9299
CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
9300
if (err < 0) {
9301
IWL_DEBUG_INFO("Failed to init the card\n");
9302
goto out_remove_sysfs;
9303
}
9304
/* Read the EEPROM */
9305
err = iwl4965_eeprom_init(priv);
9306
if (err) {
9307
IWL_ERROR("Unable to init EEPROM\n");
9308
goto out_remove_sysfs;
9309
}
9310
/* MAC Address location in EEPROM same for 3945/4965 */
9311
get_eeprom_mac(priv, priv->mac_addr);
9312
IWL_DEBUG_INFO("MAC address: " MAC_FMT "\n", MAC_ARG(priv->mac_addr));
9313
SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
9314
9315
iwl4965_rate_control_register(priv->hw);
9316
err = iwlwifi_ieee80211_register_hw(priv->hw);
9317
if (err) {
9318
IWL_ERROR("Failed to register network device (error %d)\n", err);
9319
goto out_remove_sysfs;
9320
}
9321
9322
priv->hw->conf.beacon_int = 100;
9323
priv->mac80211_registered = 1;
9324
pci_save_state(pdev);
9325
pci_disable_device(pdev);
9326
9327
return 0;
9328
9329
out_remove_sysfs:
9330
iwl4965_rate_control_unregister(priv->hw);
9331
sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
9332
9333
out_release_irq:
9334
destroy_workqueue(priv->workqueue);
9335
priv->workqueue = NULL;
9336
iwl4965_unset_hw_setting(priv);
9337
9338
out_iounmap:
9339
pci_iounmap(pdev, priv->hw_base);
9340
out_pci_release_regions:
9341
pci_release_regions(pdev);
9342
out_pci_disable_device:
9343
pci_disable_device(pdev);
9344
pci_set_drvdata(pdev, NULL);
9345
out_iwlwifi_ieee80211_free_hw:
9346
iwlwifi_ieee80211_free_hw(priv->hw);
9347
out:
9348
return err;
9349
}
9350
9351
static void iwl4965_pci_remove(struct pci_dev *pdev)
9352
{
9353
struct iwl4965_priv *priv = pci_get_drvdata(pdev);
9354
struct list_head *p, *q;
9355
int i;
9356
9357
if (!priv)
9358
return;
9359
9360
IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
9361
9362
set_bit(STATUS_EXIT_PENDING, &priv->status);
9363
9364
iwl4965_down(priv);
9365
9366
/* Free MAC hash list for ADHOC */
9367
for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
9368
list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
9369
list_del(p);
9370
kfree(list_entry(p, struct iwl4965_ibss_seq, list));
9371
}
9372
}
9373
9374
sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
9375
9376
iwl4965_dealloc_ucode_pci(priv);
9377
9378
if (priv->rxq.bd)
9379
iwl4965_rx_queue_free(priv, &priv->rxq);
9380
iwl4965_hw_txq_ctx_free(priv);
9381
9382
iwl4965_unset_hw_setting(priv);
9383
iwl4965_clear_stations_table(priv);
9384
9385
if (priv->mac80211_registered) {
9386
iwlwifi_ieee80211_unregister_hw(priv->hw);
9387
iwl4965_rate_control_unregister(priv->hw);
9388
}
9389
9390
/*netif_stop_queue(dev); */
9391
flush_workqueue(priv->workqueue);
9392
9393
/* iwlwifi_ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
9394
* priv->workqueue... so we can't take down the workqueue
9395
* until now... */
9396
destroy_workqueue(priv->workqueue);
9397
priv->workqueue = NULL;
9398
9399
pci_iounmap(pdev, priv->hw_base);
9400
pci_release_regions(pdev);
9401
pci_disable_device(pdev);
9402
pci_set_drvdata(pdev, NULL);
9403
9404
kfree(priv->channel_info);
9405
9406
kfree(priv->ieee_channels);
9407
kfree(priv->ieee_rates);
9408
9409
if (priv->ibss_beacon)
9410
dev_kfree_skb(priv->ibss_beacon);
9411
9412
iwlwifi_ieee80211_free_hw(priv->hw);
9413
}
9414
9415
#ifdef CONFIG_PM
9416
9417
static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
9418
{
9419
struct iwl4965_priv *priv = pci_get_drvdata(pdev);
9420
9421
if (priv->is_open) {
9422
set_bit(STATUS_IN_SUSPEND, &priv->status);
9423
iwl4965_mac_stop(priv->hw);
9424
priv->is_open = 1;
9425
}
9426
9427
pci_set_power_state(pdev, PCI_D3hot);
9428
9429
return 0;
9430
}
9431
9432
static int iwl4965_pci_resume(struct pci_dev *pdev)
9433
{
9434
struct iwl4965_priv *priv = pci_get_drvdata(pdev);
9435
9436
pci_set_power_state(pdev, PCI_D0);
9437
9438
if (priv->is_open)
9439
iwl4965_mac_open(priv->hw);
9440
9441
clear_bit(STATUS_IN_SUSPEND, &priv->status);
9442
return 0;
9443
}
9444
9445
#endif /* CONFIG_PM */
9446
9447
/*****************************************************************************
9448
*
9449
* driver and module entry point
9450
*
9451
*****************************************************************************/
9452
9453
static struct pci_driver iwl4965_driver = {
9454
.name = DRV_NAME,
9455
.id_table = iwl4965_hw_card_ids,
9456
.probe = iwl4965_pci_probe,
9457
.remove = __devexit_p(iwl4965_pci_remove),
9458
#ifdef CONFIG_PM
9459
.suspend = iwl4965_pci_suspend,
9460
.resume = iwl4965_pci_resume,
9461
#endif
9462
};
9463
9464
static int __init iwl4965_init(void)
9465
{
9466
9467
int ret;
9468
printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
9469
printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
9470
ret = pci_register_driver(&iwl4965_driver);
9471
if (ret) {
9472
IWL_ERROR("Unable to initialize PCI module\n");
9473
return ret;
9474
}
9475
#ifdef CONFIG_IWL4965_DEBUG
9476
ret = driver_create_file(&iwl4965_driver.driver, &driver_attr_debug_level);
9477
if (ret) {
9478
IWL_ERROR("Unable to create driver sysfs file\n");
9479
pci_unregister_driver(&iwl4965_driver);
9480
return ret;
9481
}
9482
#endif
9483
9484
return ret;
9485
}
9486
9487
static void __exit iwl4965_exit(void)
9488
{
9489
#ifdef CONFIG_IWL4965_DEBUG
9490
driver_remove_file(&iwl4965_driver.driver, &driver_attr_debug_level);
9491
#endif
9492
pci_unregister_driver(&iwl4965_driver);
9493
}
9494
9495
module_param_named(antenna, iwl4965_param_antenna, int, 0444);
9496
MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
9497
module_param_named(disable, iwl4965_param_disable, int, 0444);
9498
MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
9499
module_param_named(hwcrypto, iwl4965_param_hwcrypto, int, 0444);
9500
MODULE_PARM_DESC(hwcrypto,
9501
"using hardware crypto engine (default 0 [software])\n");
9502
module_param_named(debug, iwl4965_param_debug, int, 0444);
9503
MODULE_PARM_DESC(debug, "debug output mask");
9504
module_param_named(disable_hw_scan, iwl4965_param_disable_hw_scan, int, 0444);
9505
MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
9506
9507
module_param_named(queues_num, iwl4965_param_queues_num, int, 0444);
9508
MODULE_PARM_DESC(queues_num, "number of hw queues.");
9509
9510
/* QoS */
9511
module_param_named(qos_enable, iwl4965_param_qos_enable, int, 0444);
9512
MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
9513
9514
module_exit(iwl4965_exit);
9515
module_init(iwl4965_init);
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Version: 2.0.1