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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/compatible/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-lbm"
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
#ifndef hex_dump_to_buffer
173
static inline int snprint_line(char *buf, size_t count,
174
const u8 * data, u32 len, u32 ofs)
175
{
176
int out, i, j, l;
177
char c;
178
179
out = snprintf(buf, count, "%08X", ofs);
180
181
for (l = 0, i = 0; i < 2; i++) {
182
out += snprintf(buf + out, count - out, " ");
183
for (j = 0; j < 8 && l < len; j++, l++)
184
out +=
185
snprintf(buf + out, count - out, "%02X ",
186
data[(i * 8 + j)]);
187
for (; j < 8; j++)
188
out += snprintf(buf + out, count - out, " ");
189
}
190
out += snprintf(buf + out, count - out, " ");
191
for (l = 0, i = 0; i < 2; i++) {
192
out += snprintf(buf + out, count - out, " ");
193
for (j = 0; j < 8 && l < len; j++, l++) {
194
c = data[(i * 8 + j)];
195
if (!isascii(c) || !isprint(c))
196
c = '.';
197
198
out += snprintf(buf + out, count - out, "%c", c);
199
}
200
201
for (; j < 8; j++)
202
out += snprintf(buf + out, count - out, " ");
203
}
204
205
return out;
206
}
207
208
#ifdef CONFIG_IWL4965_DEBUG
209
static inline void printk_buf(int level, const void *p, u32 len)
210
{
211
const u8 *data = p;
212
char line[81];
213
u32 ofs = 0;
214
if (!(iwl4965_debug_level & level))
215
return;
216
217
while (len) {
218
snprint_line(line, sizeof(line), &data[ofs],
219
min(len, 16U), ofs);
220
printk(KERN_DEBUG "%s\n", line);
221
ofs += 16;
222
len -= min(len, 16U);
223
}
224
}
225
#else
226
#define printk_buf(level, p, len) do {} while (0)
227
#endif
228
229
#define hex_dump_to_buffer(d, s, l, g, lb, ls, a) \
230
snprint_line(lb, ls, d, min(s, (unsigned int)l), 0)
231
232
#define print_hex_dump(m, p, t, l, g, d, s, a) \
233
printk_buf(IWL_DL_INFO, d, s);
234
235
#endif /* hex_dump_to_buffer */
236
237
static void iwl4965_print_hex_dump(int level, void *p, u32 len)
238
{
239
#ifdef CONFIG_IWL4965_DEBUG
240
if (!(iwl4965_debug_level & level))
241
return;
242
243
print_hex_dump(KERN_DEBUG, "iwl data: ", DUMP_PREFIX_OFFSET, 16, 1,
244
p, len, 1);
245
#endif
246
}
247
248
/*************** DMA-QUEUE-GENERAL-FUNCTIONS *****
249
* DMA services
250
*
251
* Theory of operation
252
*
253
* A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
254
* of buffer descriptors, each of which points to one or more data buffers for
255
* the device to read from or fill. Driver and device exchange status of each
256
* queue via "read" and "write" pointers. Driver keeps minimum of 2 empty
257
* entries in each circular buffer, to protect against confusing empty and full
258
* queue states.
259
*
260
* The device reads or writes the data in the queues via the device's several
261
* DMA/FIFO channels. Each queue is mapped to a single DMA channel.
262
*
263
* For Tx queue, there are low mark and high mark limits. If, after queuing
264
* the packet for Tx, free space become < low mark, Tx queue stopped. When
265
* reclaiming packets (on 'tx done IRQ), if free space become > high mark,
266
* Tx queue resumed.
267
*
268
* The 4965 operates with up to 17 queues: One receive queue, one transmit
269
* queue (#4) for sending commands to the device firmware, and 15 other
270
* Tx queues that may be mapped to prioritized Tx DMA/FIFO channels.
271
*
272
* See more detailed info in iwl-4965-hw.h.
273
***************************************************/
274
275
static int iwl4965_queue_space(const struct iwl4965_queue *q)
276
{
277
int s = q->read_ptr - q->write_ptr;
278
279
if (q->read_ptr > q->write_ptr)
280
s -= q->n_bd;
281
282
if (s <= 0)
283
s += q->n_window;
284
/* keep some reserve to not confuse empty and full situations */
285
s -= 2;
286
if (s < 0)
287
s = 0;
288
return s;
289
}
290
291
/**
292
* iwl4965_queue_inc_wrap - increment queue index, wrap back to beginning
293
* @index -- current index
294
* @n_bd -- total number of entries in queue (must be power of 2)
295
*/
296
static inline int iwl4965_queue_inc_wrap(int index, int n_bd)
297
{
298
return ++index & (n_bd - 1);
299
}
300
301
/**
302
* iwl4965_queue_dec_wrap - decrement queue index, wrap back to end
303
* @index -- current index
304
* @n_bd -- total number of entries in queue (must be power of 2)
305
*/
306
static inline int iwl4965_queue_dec_wrap(int index, int n_bd)
307
{
308
return --index & (n_bd - 1);
309
}
310
311
static inline int x2_queue_used(const struct iwl4965_queue *q, int i)
312
{
313
return q->write_ptr > q->read_ptr ?
314
(i >= q->read_ptr && i < q->write_ptr) :
315
!(i < q->read_ptr && i >= q->write_ptr);
316
}
317
318
static inline u8 get_cmd_index(struct iwl4965_queue *q, u32 index, int is_huge)
319
{
320
/* This is for scan command, the big buffer at end of command array */
321
if (is_huge)
322
return q->n_window; /* must be power of 2 */
323
324
/* Otherwise, use normal size buffers */
325
return index & (q->n_window - 1);
326
}
327
328
/**
329
* iwl4965_queue_init - Initialize queue's high/low-water and read/write indexes
330
*/
331
static int iwl4965_queue_init(struct iwl4965_priv *priv, struct iwl4965_queue *q,
332
int count, int slots_num, u32 id)
333
{
334
q->n_bd = count;
335
q->n_window = slots_num;
336
q->id = id;
337
338
/* count must be power-of-two size, otherwise iwl4965_queue_inc_wrap
339
* and iwl4965_queue_dec_wrap are broken. */
340
BUG_ON(!is_power_of_2(count));
341
342
/* slots_num must be power-of-two size, otherwise
343
* get_cmd_index is broken. */
344
BUG_ON(!is_power_of_2(slots_num));
345
346
q->low_mark = q->n_window / 4;
347
if (q->low_mark < 4)
348
q->low_mark = 4;
349
350
q->high_mark = q->n_window / 8;
351
if (q->high_mark < 2)
352
q->high_mark = 2;
353
354
q->write_ptr = q->read_ptr = 0;
355
356
return 0;
357
}
358
359
/**
360
* iwl4965_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
361
*/
362
static int iwl4965_tx_queue_alloc(struct iwl4965_priv *priv,
363
struct iwl4965_tx_queue *txq, u32 id)
364
{
365
struct pci_dev *dev = priv->pci_dev;
366
367
/* Driver private data, only for Tx (not command) queues,
368
* not shared with device. */
369
if (id != IWL_CMD_QUEUE_NUM) {
370
txq->txb = kmalloc(sizeof(txq->txb[0]) *
371
TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
372
if (!txq->txb) {
373
IWL_ERROR("kmalloc for auxiliary BD "
374
"structures failed\n");
375
goto error;
376
}
377
} else
378
txq->txb = NULL;
379
380
/* Circular buffer of transmit frame descriptors (TFDs),
381
* shared with device */
382
txq->bd = pci_alloc_consistent(dev,
383
sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
384
&txq->q.dma_addr);
385
386
if (!txq->bd) {
387
IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
388
sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
389
goto error;
390
}
391
txq->q.id = id;
392
393
return 0;
394
395
error:
396
if (txq->txb) {
397
kfree(txq->txb);
398
txq->txb = NULL;
399
}
400
401
return -ENOMEM;
402
}
403
404
/**
405
* iwl4965_tx_queue_init - Allocate and initialize one tx/cmd queue
406
*/
407
int iwl4965_tx_queue_init(struct iwl4965_priv *priv,
408
struct iwl4965_tx_queue *txq, int slots_num, u32 txq_id)
409
{
410
struct pci_dev *dev = priv->pci_dev;
411
int len;
412
int rc = 0;
413
414
/*
415
* Alloc buffer array for commands (Tx or other types of commands).
416
* For the command queue (#4), allocate command space + one big
417
* command for scan, since scan command is very huge; the system will
418
* not have two scans at the same time, so only one is needed.
419
* For data Tx queues (all other queues), no super-size command
420
* space is needed.
421
*/
422
len = sizeof(struct iwl4965_cmd) * slots_num;
423
if (txq_id == IWL_CMD_QUEUE_NUM)
424
len += IWL_MAX_SCAN_SIZE;
425
txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
426
if (!txq->cmd)
427
return -ENOMEM;
428
429
/* Alloc driver data array and TFD circular buffer */
430
rc = iwl4965_tx_queue_alloc(priv, txq, txq_id);
431
if (rc) {
432
pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
433
434
return -ENOMEM;
435
}
436
txq->need_update = 0;
437
438
/* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
439
* iwl4965_queue_inc_wrap and iwl4965_queue_dec_wrap are broken. */
440
BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
441
442
/* Initialize queue's high/low-water marks, and head/tail indexes */
443
iwl4965_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
444
445
/* Tell device where to find queue */
446
iwl4965_hw_tx_queue_init(priv, txq);
447
448
return 0;
449
}
450
451
/**
452
* iwl4965_tx_queue_free - Deallocate DMA queue.
453
* @txq: Transmit queue to deallocate.
454
*
455
* Empty queue by removing and destroying all BD's.
456
* Free all buffers.
457
* 0-fill, but do not free "txq" descriptor structure.
458
*/
459
void iwl4965_tx_queue_free(struct iwl4965_priv *priv, struct iwl4965_tx_queue *txq)
460
{
461
struct iwl4965_queue *q = &txq->q;
462
struct pci_dev *dev = priv->pci_dev;
463
int len;
464
465
if (q->n_bd == 0)
466
return;
467
468
/* first, empty all BD's */
469
for (; q->write_ptr != q->read_ptr;
470
q->read_ptr = iwl4965_queue_inc_wrap(q->read_ptr, q->n_bd))
471
iwl4965_hw_txq_free_tfd(priv, txq);
472
473
len = sizeof(struct iwl4965_cmd) * q->n_window;
474
if (q->id == IWL_CMD_QUEUE_NUM)
475
len += IWL_MAX_SCAN_SIZE;
476
477
/* De-alloc array of command/tx buffers */
478
pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
479
480
/* De-alloc circular buffer of TFDs */
481
if (txq->q.n_bd)
482
pci_free_consistent(dev, sizeof(struct iwl4965_tfd_frame) *
483
txq->q.n_bd, txq->bd, txq->q.dma_addr);
484
485
/* De-alloc array of per-TFD driver data */
486
if (txq->txb) {
487
kfree(txq->txb);
488
txq->txb = NULL;
489
}
490
491
/* 0-fill queue descriptor structure */
492
memset(txq, 0, sizeof(*txq));
493
}
494
495
const u8 iwl4965_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
496
497
/*************** STATION TABLE MANAGEMENT ****
498
* mac80211 should be examined to determine if sta_info is duplicating
499
* the functionality provided here
500
*/
501
502
/**************************************************************/
503
504
#if 0 /* temporary disable till we add real remove station */
505
/**
506
* iwl4965_remove_station - Remove driver's knowledge of station.
507
*
508
* NOTE: This does not remove station from device's station table.
509
*/
510
static u8 iwl4965_remove_station(struct iwl4965_priv *priv, const u8 *addr, int is_ap)
511
{
512
int index = IWL_INVALID_STATION;
513
int i;
514
unsigned long flags;
515
516
spin_lock_irqsave(&priv->sta_lock, flags);
517
518
if (is_ap)
519
index = IWL_AP_ID;
520
else if (is_broadcast_ether_addr(addr))
521
index = priv->hw_setting.bcast_sta_id;
522
else
523
for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
524
if (priv->stations[i].used &&
525
!compare_ether_addr(priv->stations[i].sta.sta.addr,
526
addr)) {
527
index = i;
528
break;
529
}
530
531
if (unlikely(index == IWL_INVALID_STATION))
532
goto out;
533
534
if (priv->stations[index].used) {
535
priv->stations[index].used = 0;
536
priv->num_stations--;
537
}
538
539
BUG_ON(priv->num_stations < 0);
540
541
out:
542
spin_unlock_irqrestore(&priv->sta_lock, flags);
543
return 0;
544
}
545
#endif
546
547
/**
548
* iwl4965_clear_stations_table - Clear the driver's station table
549
*
550
* NOTE: This does not clear or otherwise alter the device's station table.
551
*/
552
static void iwl4965_clear_stations_table(struct iwl4965_priv *priv)
553
{
554
unsigned long flags;
555
556
spin_lock_irqsave(&priv->sta_lock, flags);
557
558
priv->num_stations = 0;
559
memset(priv->stations, 0, sizeof(priv->stations));
560
561
spin_unlock_irqrestore(&priv->sta_lock, flags);
562
}
563
564
/**
565
* iwl4965_add_station_flags - Add station to tables in driver and device
566
*/
567
u8 iwl4965_add_station_flags(struct iwl4965_priv *priv, const u8 *addr, int is_ap, u8 flags)
568
{
569
int i;
570
int index = IWL_INVALID_STATION;
571
struct iwl4965_station_entry *station;
572
unsigned long flags_spin;
573
574
spin_lock_irqsave(&priv->sta_lock, flags_spin);
575
if (is_ap)
576
index = IWL_AP_ID;
577
else if (is_broadcast_ether_addr(addr))
578
index = priv->hw_setting.bcast_sta_id;
579
else
580
for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
581
if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
582
addr)) {
583
index = i;
584
break;
585
}
586
587
if (!priv->stations[i].used &&
588
index == IWL_INVALID_STATION)
589
index = i;
590
}
591
592
593
/* These two conditions have the same outcome, but keep them separate
594
since they have different meanings */
595
if (unlikely(index == IWL_INVALID_STATION)) {
596
spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
597
return index;
598
}
599
600
if (priv->stations[index].used &&
601
!compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
602
spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
603
return index;
604
}
605
606
607
IWL_DEBUG_ASSOC("Add STA ID %d: " MAC_FMT "\n", index, MAC_ARG(addr));
608
station = &priv->stations[index];
609
station->used = 1;
610
priv->num_stations++;
611
612
/* Set up the REPLY_ADD_STA command to send to device */
613
memset(&station->sta, 0, sizeof(struct iwl4965_addsta_cmd));
614
memcpy(station->sta.sta.addr, addr, ETH_ALEN);
615
station->sta.mode = 0;
616
station->sta.sta.sta_id = index;
617
station->sta.station_flags = 0;
618
619
#ifdef CONFIG_IWL4965_HT
620
/* BCAST station and IBSS stations do not work in HT mode */
621
if (index != priv->hw_setting.bcast_sta_id &&
622
priv->iw_mode != IEEE80211_IF_TYPE_IBSS)
623
iwl4965_set_ht_add_station(priv, index);
624
#endif /*CONFIG_IWL4965_HT*/
625
626
spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
627
628
/* Add station to device's station table */
629
iwl4965_send_add_station(priv, &station->sta, flags);
630
return index;
631
632
}
633
634
/*************** DRIVER STATUS FUNCTIONS *****/
635
636
static inline int iwl4965_is_ready(struct iwl4965_priv *priv)
637
{
638
/* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
639
* set but EXIT_PENDING is not */
640
return test_bit(STATUS_READY, &priv->status) &&
641
test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
642
!test_bit(STATUS_EXIT_PENDING, &priv->status);
643
}
644
645
static inline int iwl4965_is_alive(struct iwl4965_priv *priv)
646
{
647
return test_bit(STATUS_ALIVE, &priv->status);
648
}
649
650
static inline int iwl4965_is_init(struct iwl4965_priv *priv)
651
{
652
return test_bit(STATUS_INIT, &priv->status);
653
}
654
655
static inline int iwl4965_is_rfkill(struct iwl4965_priv *priv)
656
{
657
return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
658
test_bit(STATUS_RF_KILL_SW, &priv->status);
659
}
660
661
static inline int iwl4965_is_ready_rf(struct iwl4965_priv *priv)
662
{
663
664
if (iwl4965_is_rfkill(priv))
665
return 0;
666
667
return iwl4965_is_ready(priv);
668
}
669
670
/*************** HOST COMMAND QUEUE FUNCTIONS *****/
671
672
#define IWL_CMD(x) case x : return #x
673
674
static const char *get_cmd_string(u8 cmd)
675
{
676
switch (cmd) {
677
IWL_CMD(REPLY_ALIVE);
678
IWL_CMD(REPLY_ERROR);
679
IWL_CMD(REPLY_RXON);
680
IWL_CMD(REPLY_RXON_ASSOC);
681
IWL_CMD(REPLY_QOS_PARAM);
682
IWL_CMD(REPLY_RXON_TIMING);
683
IWL_CMD(REPLY_ADD_STA);
684
IWL_CMD(REPLY_REMOVE_STA);
685
IWL_CMD(REPLY_REMOVE_ALL_STA);
686
IWL_CMD(REPLY_TX);
687
IWL_CMD(REPLY_RATE_SCALE);
688
IWL_CMD(REPLY_LEDS_CMD);
689
IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
690
IWL_CMD(RADAR_NOTIFICATION);
691
IWL_CMD(REPLY_QUIET_CMD);
692
IWL_CMD(REPLY_CHANNEL_SWITCH);
693
IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
694
IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
695
IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
696
IWL_CMD(POWER_TABLE_CMD);
697
IWL_CMD(PM_SLEEP_NOTIFICATION);
698
IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
699
IWL_CMD(REPLY_SCAN_CMD);
700
IWL_CMD(REPLY_SCAN_ABORT_CMD);
701
IWL_CMD(SCAN_START_NOTIFICATION);
702
IWL_CMD(SCAN_RESULTS_NOTIFICATION);
703
IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
704
IWL_CMD(BEACON_NOTIFICATION);
705
IWL_CMD(REPLY_TX_BEACON);
706
IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
707
IWL_CMD(QUIET_NOTIFICATION);
708
IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
709
IWL_CMD(MEASURE_ABORT_NOTIFICATION);
710
IWL_CMD(REPLY_BT_CONFIG);
711
IWL_CMD(REPLY_STATISTICS_CMD);
712
IWL_CMD(STATISTICS_NOTIFICATION);
713
IWL_CMD(REPLY_CARD_STATE_CMD);
714
IWL_CMD(CARD_STATE_NOTIFICATION);
715
IWL_CMD(MISSED_BEACONS_NOTIFICATION);
716
IWL_CMD(REPLY_CT_KILL_CONFIG_CMD);
717
IWL_CMD(SENSITIVITY_CMD);
718
IWL_CMD(REPLY_PHY_CALIBRATION_CMD);
719
IWL_CMD(REPLY_RX_PHY_CMD);
720
IWL_CMD(REPLY_RX_MPDU_CMD);
721
IWL_CMD(REPLY_4965_RX);
722
IWL_CMD(REPLY_COMPRESSED_BA);
723
default:
724
return "UNKNOWN";
725
726
}
727
}
728
729
#define HOST_COMPLETE_TIMEOUT (HZ / 2)
730
731
/**
732
* iwl4965_enqueue_hcmd - enqueue a uCode command
733
* @priv: device private data point
734
* @cmd: a point to the ucode command structure
735
*
736
* The function returns < 0 values to indicate the operation is
737
* failed. On success, it turns the index (> 0) of command in the
738
* command queue.
739
*/
740
static int iwl4965_enqueue_hcmd(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
741
{
742
struct iwl4965_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
743
struct iwl4965_queue *q = &txq->q;
744
struct iwl4965_tfd_frame *tfd;
745
u32 *control_flags;
746
struct iwl4965_cmd *out_cmd;
747
u32 idx;
748
u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
749
dma_addr_t phys_addr;
750
int ret;
751
unsigned long flags;
752
753
/* If any of the command structures end up being larger than
754
* the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
755
* we will need to increase the size of the TFD entries */
756
BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
757
!(cmd->meta.flags & CMD_SIZE_HUGE));
758
759
if (iwl4965_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
760
IWL_ERROR("No space for Tx\n");
761
return -ENOSPC;
762
}
763
764
spin_lock_irqsave(&priv->hcmd_lock, flags);
765
766
tfd = &txq->bd[q->write_ptr];
767
memset(tfd, 0, sizeof(*tfd));
768
769
control_flags = (u32 *) tfd;
770
771
idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
772
out_cmd = &txq->cmd[idx];
773
774
out_cmd->hdr.cmd = cmd->id;
775
memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
776
memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
777
778
/* At this point, the out_cmd now has all of the incoming cmd
779
* information */
780
781
out_cmd->hdr.flags = 0;
782
out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
783
INDEX_TO_SEQ(q->write_ptr));
784
if (out_cmd->meta.flags & CMD_SIZE_HUGE)
785
out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
786
787
phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
788
offsetof(struct iwl4965_cmd, hdr);
789
iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
790
791
IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
792
"%d bytes at %d[%d]:%d\n",
793
get_cmd_string(out_cmd->hdr.cmd),
794
out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
795
fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
796
797
txq->need_update = 1;
798
799
/* Set up entry in queue's byte count circular buffer */
800
ret = iwl4965_tx_queue_update_wr_ptr(priv, txq, 0);
801
802
/* Increment and update queue's write index */
803
q->write_ptr = iwl4965_queue_inc_wrap(q->write_ptr, q->n_bd);
804
iwl4965_tx_queue_update_write_ptr(priv, txq);
805
806
spin_unlock_irqrestore(&priv->hcmd_lock, flags);
807
return ret ? ret : idx;
808
}
809
810
static int iwl4965_send_cmd_async(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
811
{
812
int ret;
813
814
BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
815
816
/* An asynchronous command can not expect an SKB to be set. */
817
BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
818
819
/* An asynchronous command MUST have a callback. */
820
BUG_ON(!cmd->meta.u.callback);
821
822
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
823
return -EBUSY;
824
825
ret = iwl4965_enqueue_hcmd(priv, cmd);
826
if (ret < 0) {
827
IWL_ERROR("Error sending %s: iwl4965_enqueue_hcmd failed: %d\n",
828
get_cmd_string(cmd->id), ret);
829
return ret;
830
}
831
return 0;
832
}
833
834
static int iwl4965_send_cmd_sync(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
835
{
836
int cmd_idx;
837
int ret;
838
static atomic_t entry = ATOMIC_INIT(0); /* reentrance protection */
839
840
BUG_ON(cmd->meta.flags & CMD_ASYNC);
841
842
/* A synchronous command can not have a callback set. */
843
BUG_ON(cmd->meta.u.callback != NULL);
844
845
if (atomic_xchg(&entry, 1)) {
846
IWL_ERROR("Error sending %s: Already sending a host command\n",
847
get_cmd_string(cmd->id));
848
return -EBUSY;
849
}
850
851
set_bit(STATUS_HCMD_ACTIVE, &priv->status);
852
853
if (cmd->meta.flags & CMD_WANT_SKB)
854
cmd->meta.source = &cmd->meta;
855
856
cmd_idx = iwl4965_enqueue_hcmd(priv, cmd);
857
if (cmd_idx < 0) {
858
ret = cmd_idx;
859
IWL_ERROR("Error sending %s: iwl4965_enqueue_hcmd failed: %d\n",
860
get_cmd_string(cmd->id), ret);
861
goto out;
862
}
863
864
ret = wait_event_interruptible_timeout(priv->wait_command_queue,
865
!test_bit(STATUS_HCMD_ACTIVE, &priv->status),
866
HOST_COMPLETE_TIMEOUT);
867
if (!ret) {
868
if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
869
IWL_ERROR("Error sending %s: time out after %dms.\n",
870
get_cmd_string(cmd->id),
871
jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
872
873
clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
874
ret = -ETIMEDOUT;
875
goto cancel;
876
}
877
}
878
879
if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
880
IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
881
get_cmd_string(cmd->id));
882
ret = -ECANCELED;
883
goto fail;
884
}
885
if (test_bit(STATUS_FW_ERROR, &priv->status)) {
886
IWL_DEBUG_INFO("Command %s failed: FW Error\n",
887
get_cmd_string(cmd->id));
888
ret = -EIO;
889
goto fail;
890
}
891
if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
892
IWL_ERROR("Error: Response NULL in '%s'\n",
893
get_cmd_string(cmd->id));
894
ret = -EIO;
895
goto out;
896
}
897
898
ret = 0;
899
goto out;
900
901
cancel:
902
if (cmd->meta.flags & CMD_WANT_SKB) {
903
struct iwl4965_cmd *qcmd;
904
905
/* Cancel the CMD_WANT_SKB flag for the cmd in the
906
* TX cmd queue. Otherwise in case the cmd comes
907
* in later, it will possibly set an invalid
908
* address (cmd->meta.source). */
909
qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
910
qcmd->meta.flags &= ~CMD_WANT_SKB;
911
}
912
fail:
913
if (cmd->meta.u.skb) {
914
dev_kfree_skb_any(cmd->meta.u.skb);
915
cmd->meta.u.skb = NULL;
916
}
917
out:
918
atomic_set(&entry, 0);
919
return ret;
920
}
921
922
int iwl4965_send_cmd(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
923
{
924
if (cmd->meta.flags & CMD_ASYNC)
925
return iwl4965_send_cmd_async(priv, cmd);
926
927
return iwl4965_send_cmd_sync(priv, cmd);
928
}
929
930
int iwl4965_send_cmd_pdu(struct iwl4965_priv *priv, u8 id, u16 len, const void *data)
931
{
932
struct iwl4965_host_cmd cmd = {
933
.id = id,
934
.len = len,
935
.data = data,
936
};
937
938
return iwl4965_send_cmd_sync(priv, &cmd);
939
}
940
941
static int __must_check iwl4965_send_cmd_u32(struct iwl4965_priv *priv, u8 id, u32 val)
942
{
943
struct iwl4965_host_cmd cmd = {
944
.id = id,
945
.len = sizeof(val),
946
.data = &val,
947
};
948
949
return iwl4965_send_cmd_sync(priv, &cmd);
950
}
951
952
int iwl4965_send_statistics_request(struct iwl4965_priv *priv)
953
{
954
return iwl4965_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
955
}
956
957
/**
958
* iwl4965_rxon_add_station - add station into station table.
959
*
960
* there is only one AP station with id= IWL_AP_ID
961
* NOTE: mutex must be held before calling this fnction
962
*/
963
static int iwl4965_rxon_add_station(struct iwl4965_priv *priv,
964
const u8 *addr, int is_ap)
965
{
966
u8 sta_id;
967
968
/* Add station to device's station table */
969
sta_id = iwl4965_add_station_flags(priv, addr, is_ap, 0);
970
971
/* Set up default rate scaling table in device's station table */
972
iwl4965_add_station(priv, addr, is_ap);
973
974
return sta_id;
975
}
976
977
/**
978
* iwl4965_set_rxon_channel - Set the phymode and channel values in staging RXON
979
* @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
980
* @channel: Any channel valid for the requested phymode
981
982
* In addition to setting the staging RXON, priv->phymode is also set.
983
*
984
* NOTE: Does not commit to the hardware; it sets appropriate bit fields
985
* in the staging RXON flag structure based on the phymode
986
*/
987
static int iwl4965_set_rxon_channel(struct iwl4965_priv *priv, u8 phymode,
988
u16 channel)
989
{
990
if (!iwl4965_get_channel_info(priv, phymode, channel)) {
991
IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
992
channel, phymode);
993
return -EINVAL;
994
}
995
996
if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
997
(priv->phymode == phymode))
998
return 0;
999
1000
priv->staging_rxon.channel = cpu_to_le16(channel);
1001
if (phymode == MODE_IEEE80211A)
1002
priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
1003
else
1004
priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1005
1006
priv->phymode = phymode;
1007
1008
IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, phymode);
1009
1010
return 0;
1011
}
1012
1013
/**
1014
* iwl4965_check_rxon_cmd - validate RXON structure is valid
1015
*
1016
* NOTE: This is really only useful during development and can eventually
1017
* be #ifdef'd out once the driver is stable and folks aren't actively
1018
* making changes
1019
*/
1020
static int iwl4965_check_rxon_cmd(struct iwl4965_rxon_cmd *rxon)
1021
{
1022
int error = 0;
1023
int counter = 1;
1024
1025
if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
1026
error |= le32_to_cpu(rxon->flags &
1027
(RXON_FLG_TGJ_NARROW_BAND_MSK |
1028
RXON_FLG_RADAR_DETECT_MSK));
1029
if (error)
1030
IWL_WARNING("check 24G fields %d | %d\n",
1031
counter++, error);
1032
} else {
1033
error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
1034
0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
1035
if (error)
1036
IWL_WARNING("check 52 fields %d | %d\n",
1037
counter++, error);
1038
error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
1039
if (error)
1040
IWL_WARNING("check 52 CCK %d | %d\n",
1041
counter++, error);
1042
}
1043
error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
1044
if (error)
1045
IWL_WARNING("check mac addr %d | %d\n", counter++, error);
1046
1047
/* make sure basic rates 6Mbps and 1Mbps are supported */
1048
error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
1049
((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
1050
if (error)
1051
IWL_WARNING("check basic rate %d | %d\n", counter++, error);
1052
1053
error |= (le16_to_cpu(rxon->assoc_id) > 2007);
1054
if (error)
1055
IWL_WARNING("check assoc id %d | %d\n", counter++, error);
1056
1057
error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
1058
== (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
1059
if (error)
1060
IWL_WARNING("check CCK and short slot %d | %d\n",
1061
counter++, error);
1062
1063
error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
1064
== (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
1065
if (error)
1066
IWL_WARNING("check CCK & auto detect %d | %d\n",
1067
counter++, error);
1068
1069
error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
1070
RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
1071
if (error)
1072
IWL_WARNING("check TGG and auto detect %d | %d\n",
1073
counter++, error);
1074
1075
if (error)
1076
IWL_WARNING("Tuning to channel %d\n",
1077
le16_to_cpu(rxon->channel));
1078
1079
if (error) {
1080
IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
1081
return -1;
1082
}
1083
return 0;
1084
}
1085
1086
/**
1087
* iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
1088
* @priv: staging_rxon is compared to active_rxon
1089
*
1090
* If the RXON structure is changing enough to require a new tune,
1091
* or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
1092
* a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
1093
*/
1094
static int iwl4965_full_rxon_required(struct iwl4965_priv *priv)
1095
{
1096
1097
/* These items are only settable from the full RXON command */
1098
if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
1099
compare_ether_addr(priv->staging_rxon.bssid_addr,
1100
priv->active_rxon.bssid_addr) ||
1101
compare_ether_addr(priv->staging_rxon.node_addr,
1102
priv->active_rxon.node_addr) ||
1103
compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
1104
priv->active_rxon.wlap_bssid_addr) ||
1105
(priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
1106
(priv->staging_rxon.channel != priv->active_rxon.channel) ||
1107
(priv->staging_rxon.air_propagation !=
1108
priv->active_rxon.air_propagation) ||
1109
(priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
1110
priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
1111
(priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
1112
priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
1113
(priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
1114
(priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
1115
return 1;
1116
1117
/* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
1118
* be updated with the RXON_ASSOC command -- however only some
1119
* flag transitions are allowed using RXON_ASSOC */
1120
1121
/* Check if we are not switching bands */
1122
if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
1123
(priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
1124
return 1;
1125
1126
/* Check if we are switching association toggle */
1127
if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
1128
(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
1129
return 1;
1130
1131
return 0;
1132
}
1133
1134
static int iwl4965_send_rxon_assoc(struct iwl4965_priv *priv)
1135
{
1136
int rc = 0;
1137
struct iwl4965_rx_packet *res = NULL;
1138
struct iwl4965_rxon_assoc_cmd rxon_assoc;
1139
struct iwl4965_host_cmd cmd = {
1140
.id = REPLY_RXON_ASSOC,
1141
.len = sizeof(rxon_assoc),
1142
.meta.flags = CMD_WANT_SKB,
1143
.data = &rxon_assoc,
1144
};
1145
const struct iwl4965_rxon_cmd *rxon1 = &priv->staging_rxon;
1146
const struct iwl4965_rxon_cmd *rxon2 = &priv->active_rxon;
1147
1148
if ((rxon1->flags == rxon2->flags) &&
1149
(rxon1->filter_flags == rxon2->filter_flags) &&
1150
(rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1151
(rxon1->ofdm_ht_single_stream_basic_rates ==
1152
rxon2->ofdm_ht_single_stream_basic_rates) &&
1153
(rxon1->ofdm_ht_dual_stream_basic_rates ==
1154
rxon2->ofdm_ht_dual_stream_basic_rates) &&
1155
(rxon1->rx_chain == rxon2->rx_chain) &&
1156
(rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1157
IWL_DEBUG_INFO("Using current RXON_ASSOC. Not resending.\n");
1158
return 0;
1159
}
1160
1161
rxon_assoc.flags = priv->staging_rxon.flags;
1162
rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1163
rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1164
rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1165
rxon_assoc.reserved = 0;
1166
rxon_assoc.ofdm_ht_single_stream_basic_rates =
1167
priv->staging_rxon.ofdm_ht_single_stream_basic_rates;
1168
rxon_assoc.ofdm_ht_dual_stream_basic_rates =
1169
priv->staging_rxon.ofdm_ht_dual_stream_basic_rates;
1170
rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain;
1171
1172
rc = iwl4965_send_cmd_sync(priv, &cmd);
1173
if (rc)
1174
return rc;
1175
1176
res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1177
if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1178
IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1179
rc = -EIO;
1180
}
1181
1182
priv->alloc_rxb_skb--;
1183
dev_kfree_skb_any(cmd.meta.u.skb);
1184
1185
return rc;
1186
}
1187
1188
/**
1189
* iwl4965_commit_rxon - commit staging_rxon to hardware
1190
*
1191
* The RXON command in staging_rxon is committed to the hardware and
1192
* the active_rxon structure is updated with the new data. This
1193
* function correctly transitions out of the RXON_ASSOC_MSK state if
1194
* a HW tune is required based on the RXON structure changes.
1195
*/
1196
static int iwl4965_commit_rxon(struct iwl4965_priv *priv)
1197
{
1198
/* cast away the const for active_rxon in this function */
1199
struct iwl4965_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
1200
int rc = 0;
1201
1202
if (!iwl4965_is_alive(priv))
1203
return -1;
1204
1205
/* always get timestamp with Rx frame */
1206
priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
1207
1208
rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
1209
if (rc) {
1210
IWL_ERROR("Invalid RXON configuration. Not committing.\n");
1211
return -EINVAL;
1212
}
1213
1214
/* If we don't need to send a full RXON, we can use
1215
* iwl4965_rxon_assoc_cmd which is used to reconfigure filter
1216
* and other flags for the current radio configuration. */
1217
if (!iwl4965_full_rxon_required(priv)) {
1218
rc = iwl4965_send_rxon_assoc(priv);
1219
if (rc) {
1220
IWL_ERROR("Error setting RXON_ASSOC "
1221
"configuration (%d).\n", rc);
1222
return rc;
1223
}
1224
1225
memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1226
1227
return 0;
1228
}
1229
1230
/* station table will be cleared */
1231
priv->assoc_station_added = 0;
1232
1233
#ifdef CONFIG_IWL4965_SENSITIVITY
1234
priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1235
if (!priv->error_recovering)
1236
priv->start_calib = 0;
1237
1238
iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1239
#endif /* CONFIG_IWL4965_SENSITIVITY */
1240
1241
/* If we are currently associated and the new config requires
1242
* an RXON_ASSOC and the new config wants the associated mask enabled,
1243
* we must clear the associated from the active configuration
1244
* before we apply the new config */
1245
if (iwl4965_is_associated(priv) &&
1246
(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
1247
IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1248
active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1249
1250
rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON,
1251
sizeof(struct iwl4965_rxon_cmd),
1252
&priv->active_rxon);
1253
1254
/* If the mask clearing failed then we set
1255
* active_rxon back to what it was previously */
1256
if (rc) {
1257
active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1258
IWL_ERROR("Error clearing ASSOC_MSK on current "
1259
"configuration (%d).\n", rc);
1260
return rc;
1261
}
1262
}
1263
1264
IWL_DEBUG_INFO("Sending RXON\n"
1265
"* with%s RXON_FILTER_ASSOC_MSK\n"
1266
"* channel = %d\n"
1267
"* bssid = " MAC_FMT "\n",
1268
((priv->staging_rxon.filter_flags &
1269
RXON_FILTER_ASSOC_MSK) ? "" : "out"),
1270
le16_to_cpu(priv->staging_rxon.channel),
1271
MAC_ARG(priv->staging_rxon.bssid_addr));
1272
1273
/* Apply the new configuration */
1274
rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON,
1275
sizeof(struct iwl4965_rxon_cmd), &priv->staging_rxon);
1276
if (rc) {
1277
IWL_ERROR("Error setting new configuration (%d).\n", rc);
1278
return rc;
1279
}
1280
1281
iwl4965_clear_stations_table(priv);
1282
1283
#ifdef CONFIG_IWL4965_SENSITIVITY
1284
if (!priv->error_recovering)
1285
priv->start_calib = 0;
1286
1287
priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1288
iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1289
#endif /* CONFIG_IWL4965_SENSITIVITY */
1290
1291
memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1292
1293
/* If we issue a new RXON command which required a tune then we must
1294
* send a new TXPOWER command or we won't be able to Tx any frames */
1295
rc = iwl4965_hw_reg_send_txpower(priv);
1296
if (rc) {
1297
IWL_ERROR("Error setting Tx power (%d).\n", rc);
1298
return rc;
1299
}
1300
1301
/* Add the broadcast address so we can send broadcast frames */
1302
if (iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0) ==
1303
IWL_INVALID_STATION) {
1304
IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1305
return -EIO;
1306
}
1307
1308
/* If we have set the ASSOC_MSK and we are in BSS mode then
1309
* add the IWL_AP_ID to the station rate table */
1310
if (iwl4965_is_associated(priv) &&
1311
(priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
1312
if (iwl4965_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
1313
== IWL_INVALID_STATION) {
1314
IWL_ERROR("Error adding AP address for transmit.\n");
1315
return -EIO;
1316
}
1317
priv->assoc_station_added = 1;
1318
}
1319
1320
return 0;
1321
}
1322
1323
static int iwl4965_send_bt_config(struct iwl4965_priv *priv)
1324
{
1325
struct iwl4965_bt_cmd bt_cmd = {
1326
.flags = 3,
1327
.lead_time = 0xAA,
1328
.max_kill = 1,
1329
.kill_ack_mask = 0,
1330
.kill_cts_mask = 0,
1331
};
1332
1333
return iwl4965_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1334
sizeof(struct iwl4965_bt_cmd), &bt_cmd);
1335
}
1336
1337
static int iwl4965_send_scan_abort(struct iwl4965_priv *priv)
1338
{
1339
int rc = 0;
1340
struct iwl4965_rx_packet *res;
1341
struct iwl4965_host_cmd cmd = {
1342
.id = REPLY_SCAN_ABORT_CMD,
1343
.meta.flags = CMD_WANT_SKB,
1344
};
1345
1346
/* If there isn't a scan actively going on in the hardware
1347
* then we are in between scan bands and not actually
1348
* actively scanning, so don't send the abort command */
1349
if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1350
clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1351
return 0;
1352
}
1353
1354
rc = iwl4965_send_cmd_sync(priv, &cmd);
1355
if (rc) {
1356
clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1357
return rc;
1358
}
1359
1360
res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1361
if (res->u.status != CAN_ABORT_STATUS) {
1362
/* The scan abort will return 1 for success or
1363
* 2 for "failure". A failure condition can be
1364
* due to simply not being in an active scan which
1365
* can occur if we send the scan abort before we
1366
* the microcode has notified us that a scan is
1367
* completed. */
1368
IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1369
clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1370
clear_bit(STATUS_SCAN_HW, &priv->status);
1371
}
1372
1373
dev_kfree_skb_any(cmd.meta.u.skb);
1374
1375
return rc;
1376
}
1377
1378
static int iwl4965_card_state_sync_callback(struct iwl4965_priv *priv,
1379
struct iwl4965_cmd *cmd,
1380
struct sk_buff *skb)
1381
{
1382
return 1;
1383
}
1384
1385
/*
1386
* CARD_STATE_CMD
1387
*
1388
* Use: Sets the device's internal card state to enable, disable, or halt
1389
*
1390
* When in the 'enable' state the card operates as normal.
1391
* When in the 'disable' state, the card enters into a low power mode.
1392
* When in the 'halt' state, the card is shut down and must be fully
1393
* restarted to come back on.
1394
*/
1395
static int iwl4965_send_card_state(struct iwl4965_priv *priv, u32 flags, u8 meta_flag)
1396
{
1397
struct iwl4965_host_cmd cmd = {
1398
.id = REPLY_CARD_STATE_CMD,
1399
.len = sizeof(u32),
1400
.data = &flags,
1401
.meta.flags = meta_flag,
1402
};
1403
1404
if (meta_flag & CMD_ASYNC)
1405
cmd.meta.u.callback = iwl4965_card_state_sync_callback;
1406
1407
return iwl4965_send_cmd(priv, &cmd);
1408
}
1409
1410
static int iwl4965_add_sta_sync_callback(struct iwl4965_priv *priv,
1411
struct iwl4965_cmd *cmd, struct sk_buff *skb)
1412
{
1413
struct iwl4965_rx_packet *res = NULL;
1414
1415
if (!skb) {
1416
IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1417
return 1;
1418
}
1419
1420
res = (struct iwl4965_rx_packet *)skb->data;
1421
if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1422
IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1423
res->hdr.flags);
1424
return 1;
1425
}
1426
1427
switch (res->u.add_sta.status) {
1428
case ADD_STA_SUCCESS_MSK:
1429
break;
1430
default:
1431
break;
1432
}
1433
1434
/* We didn't cache the SKB; let the caller free it */
1435
return 1;
1436
}
1437
1438
int iwl4965_send_add_station(struct iwl4965_priv *priv,
1439
struct iwl4965_addsta_cmd *sta, u8 flags)
1440
{
1441
struct iwl4965_rx_packet *res = NULL;
1442
int rc = 0;
1443
struct iwl4965_host_cmd cmd = {
1444
.id = REPLY_ADD_STA,
1445
.len = sizeof(struct iwl4965_addsta_cmd),
1446
.meta.flags = flags,
1447
.data = sta,
1448
};
1449
1450
if (flags & CMD_ASYNC)
1451
cmd.meta.u.callback = iwl4965_add_sta_sync_callback;
1452
else
1453
cmd.meta.flags |= CMD_WANT_SKB;
1454
1455
rc = iwl4965_send_cmd(priv, &cmd);
1456
1457
if (rc || (flags & CMD_ASYNC))
1458
return rc;
1459
1460
res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1461
if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1462
IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1463
res->hdr.flags);
1464
rc = -EIO;
1465
}
1466
1467
if (rc == 0) {
1468
switch (res->u.add_sta.status) {
1469
case ADD_STA_SUCCESS_MSK:
1470
IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1471
break;
1472
default:
1473
rc = -EIO;
1474
IWL_WARNING("REPLY_ADD_STA failed\n");
1475
break;
1476
}
1477
}
1478
1479
priv->alloc_rxb_skb--;
1480
dev_kfree_skb_any(cmd.meta.u.skb);
1481
1482
return rc;
1483
}
1484
1485
static int iwl4965_update_sta_key_info(struct iwl4965_priv *priv,
1486
struct ieee80211_key_conf *keyconf,
1487
u8 sta_id)
1488
{
1489
unsigned long flags;
1490
__le16 key_flags = 0;
1491
1492
switch (keyconf->alg) {
1493
case ALG_CCMP:
1494
key_flags |= STA_KEY_FLG_CCMP;
1495
key_flags |= cpu_to_le16(
1496
keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1497
key_flags &= ~STA_KEY_FLG_INVALID;
1498
break;
1499
case ALG_TKIP:
1500
case ALG_WEP:
1501
default:
1502
return -EINVAL;
1503
}
1504
spin_lock_irqsave(&priv->sta_lock, flags);
1505
priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1506
priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1507
memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1508
keyconf->keylen);
1509
1510
memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1511
keyconf->keylen);
1512
priv->stations[sta_id].sta.key.key_flags = key_flags;
1513
priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1514
priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1515
1516
spin_unlock_irqrestore(&priv->sta_lock, flags);
1517
1518
IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1519
iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1520
return 0;
1521
}
1522
1523
static int iwl4965_clear_sta_key_info(struct iwl4965_priv *priv, u8 sta_id)
1524
{
1525
unsigned long flags;
1526
1527
spin_lock_irqsave(&priv->sta_lock, flags);
1528
memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl4965_hw_key));
1529
memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl4965_keyinfo));
1530
priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1531
priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1532
priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1533
spin_unlock_irqrestore(&priv->sta_lock, flags);
1534
1535
IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1536
iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1537
return 0;
1538
}
1539
1540
static void iwl4965_clear_free_frames(struct iwl4965_priv *priv)
1541
{
1542
struct list_head *element;
1543
1544
IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1545
priv->frames_count);
1546
1547
while (!list_empty(&priv->free_frames)) {
1548
element = priv->free_frames.next;
1549
list_del(element);
1550
kfree(list_entry(element, struct iwl4965_frame, list));
1551
priv->frames_count--;
1552
}
1553
1554
if (priv->frames_count) {
1555
IWL_WARNING("%d frames still in use. Did we lose one?\n",
1556
priv->frames_count);
1557
priv->frames_count = 0;
1558
}
1559
}
1560
1561
static struct iwl4965_frame *iwl4965_get_free_frame(struct iwl4965_priv *priv)
1562
{
1563
struct iwl4965_frame *frame;
1564
struct list_head *element;
1565
if (list_empty(&priv->free_frames)) {
1566
frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1567
if (!frame) {
1568
IWL_ERROR("Could not allocate frame!\n");
1569
return NULL;
1570
}
1571
1572
priv->frames_count++;
1573
return frame;
1574
}
1575
1576
element = priv->free_frames.next;
1577
list_del(element);
1578
return list_entry(element, struct iwl4965_frame, list);
1579
}
1580
1581
static void iwl4965_free_frame(struct iwl4965_priv *priv, struct iwl4965_frame *frame)
1582
{
1583
memset(frame, 0, sizeof(*frame));
1584
list_add(&frame->list, &priv->free_frames);
1585
}
1586
1587
unsigned int iwl4965_fill_beacon_frame(struct iwl4965_priv *priv,
1588
struct ieee80211_hdr *hdr,
1589
const u8 *dest, int left)
1590
{
1591
1592
if (!iwl4965_is_associated(priv) || !priv->ibss_beacon ||
1593
((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1594
(priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1595
return 0;
1596
1597
if (priv->ibss_beacon->len > left)
1598
return 0;
1599
1600
memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1601
1602
return priv->ibss_beacon->len;
1603
}
1604
1605
int iwl4965_rate_index_from_plcp(int plcp)
1606
{
1607
int i = 0;
1608
1609
/* 4965 HT rate format */
1610
if (plcp & RATE_MCS_HT_MSK) {
1611
i = (plcp & 0xff);
1612
1613
if (i >= IWL_RATE_MIMO_6M_PLCP)
1614
i = i - IWL_RATE_MIMO_6M_PLCP;
1615
1616
i += IWL_FIRST_OFDM_RATE;
1617
/* skip 9M not supported in ht*/
1618
if (i >= IWL_RATE_9M_INDEX)
1619
i += 1;
1620
if ((i >= IWL_FIRST_OFDM_RATE) &&
1621
(i <= IWL_LAST_OFDM_RATE))
1622
return i;
1623
1624
/* 4965 legacy rate format, search for match in table */
1625
} else {
1626
for (i = 0; i < ARRAY_SIZE(iwl4965_rates); i++)
1627
if (iwl4965_rates[i].plcp == (plcp &0xFF))
1628
return i;
1629
}
1630
return -1;
1631
}
1632
1633
static u8 iwl4965_rate_get_lowest_plcp(int rate_mask)
1634
{
1635
u8 i;
1636
1637
for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1638
i = iwl4965_rates[i].next_ieee) {
1639
if (rate_mask & (1 << i))
1640
return iwl4965_rates[i].plcp;
1641
}
1642
1643
return IWL_RATE_INVALID;
1644
}
1645
1646
static int iwl4965_send_beacon_cmd(struct iwl4965_priv *priv)
1647
{
1648
struct iwl4965_frame *frame;
1649
unsigned int frame_size;
1650
int rc;
1651
u8 rate;
1652
1653
frame = iwl4965_get_free_frame(priv);
1654
1655
if (!frame) {
1656
IWL_ERROR("Could not obtain free frame buffer for beacon "
1657
"command.\n");
1658
return -ENOMEM;
1659
}
1660
1661
if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1662
rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic &
1663
0xFF0);
1664
if (rate == IWL_INVALID_RATE)
1665
rate = IWL_RATE_6M_PLCP;
1666
} else {
1667
rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1668
if (rate == IWL_INVALID_RATE)
1669
rate = IWL_RATE_1M_PLCP;
1670
}
1671
1672
frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
1673
1674
rc = iwl4965_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1675
&frame->u.cmd[0]);
1676
1677
iwl4965_free_frame(priv, frame);
1678
1679
return rc;
1680
}
1681
1682
/******************************************************************************
1683
*
1684
* EEPROM related functions
1685
*
1686
******************************************************************************/
1687
1688
static void get_eeprom_mac(struct iwl4965_priv *priv, u8 *mac)
1689
{
1690
memcpy(mac, priv->eeprom.mac_address, 6);
1691
}
1692
1693
/**
1694
* iwl4965_eeprom_init - read EEPROM contents
1695
*
1696
* Load the EEPROM contents from adapter into priv->eeprom
1697
*
1698
* NOTE: This routine uses the non-debug IO access functions.
1699
*/
1700
int iwl4965_eeprom_init(struct iwl4965_priv *priv)
1701
{
1702
u16 *e = (u16 *)&priv->eeprom;
1703
u32 gp = iwl4965_read32(priv, CSR_EEPROM_GP);
1704
u32 r;
1705
int sz = sizeof(priv->eeprom);
1706
int rc;
1707
int i;
1708
u16 addr;
1709
1710
/* The EEPROM structure has several padding buffers within it
1711
* and when adding new EEPROM maps is subject to programmer errors
1712
* which may be very difficult to identify without explicitly
1713
* checking the resulting size of the eeprom map. */
1714
BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);
1715
1716
if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1717
IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp);
1718
return -ENOENT;
1719
}
1720
1721
/* Make sure driver (instead of uCode) is allowed to read EEPROM */
1722
rc = iwl4965_eeprom_acquire_semaphore(priv);
1723
if (rc < 0) {
1724
IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
1725
return -ENOENT;
1726
}
1727
1728
/* eeprom is an array of 16bit values */
1729
for (addr = 0; addr < sz; addr += sizeof(u16)) {
1730
_iwl4965_write32(priv, CSR_EEPROM_REG, addr << 1);
1731
_iwl4965_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1732
1733
for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT;
1734
i += IWL_EEPROM_ACCESS_DELAY) {
1735
r = _iwl4965_read_direct32(priv, CSR_EEPROM_REG);
1736
if (r & CSR_EEPROM_REG_READ_VALID_MSK)
1737
break;
1738
udelay(IWL_EEPROM_ACCESS_DELAY);
1739
}
1740
1741
if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) {
1742
IWL_ERROR("Time out reading EEPROM[%d]", addr);
1743
rc = -ETIMEDOUT;
1744
goto done;
1745
}
1746
e[addr / 2] = le16_to_cpu(r >> 16);
1747
}
1748
rc = 0;
1749
1750
done:
1751
iwl4965_eeprom_release_semaphore(priv);
1752
return rc;
1753
}
1754
1755
/******************************************************************************
1756
*
1757
* Misc. internal state and helper functions
1758
*
1759
******************************************************************************/
1760
#ifdef CONFIG_IWL4965_DEBUG
1761
1762
/**
1763
* iwl4965_report_frame - dump frame to syslog during debug sessions
1764
*
1765
* You may hack this function to show different aspects of received frames,
1766
* including selective frame dumps.
1767
* group100 parameter selects whether to show 1 out of 100 good frames.
1768
*
1769
* TODO: This was originally written for 3945, need to audit for
1770
* proper operation with 4965.
1771
*/
1772
void iwl4965_report_frame(struct iwl4965_priv *priv,
1773
struct iwl4965_rx_packet *pkt,
1774
struct ieee80211_hdr *header, int group100)
1775
{
1776
u32 to_us;
1777
u32 print_summary = 0;
1778
u32 print_dump = 0; /* set to 1 to dump all frames' contents */
1779
u32 hundred = 0;
1780
u32 dataframe = 0;
1781
u16 fc;
1782
u16 seq_ctl;
1783
u16 channel;
1784
u16 phy_flags;
1785
int rate_sym;
1786
u16 length;
1787
u16 status;
1788
u16 bcn_tmr;
1789
u32 tsf_low;
1790
u64 tsf;
1791
u8 rssi;
1792
u8 agc;
1793
u16 sig_avg;
1794
u16 noise_diff;
1795
struct iwl4965_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
1796
struct iwl4965_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
1797
struct iwl4965_rx_frame_end *rx_end = IWL_RX_END(pkt);
1798
u8 *data = IWL_RX_DATA(pkt);
1799
1800
/* MAC header */
1801
fc = le16_to_cpu(header->frame_control);
1802
seq_ctl = le16_to_cpu(header->seq_ctrl);
1803
1804
/* metadata */
1805
channel = le16_to_cpu(rx_hdr->channel);
1806
phy_flags = le16_to_cpu(rx_hdr->phy_flags);
1807
rate_sym = rx_hdr->rate;
1808
length = le16_to_cpu(rx_hdr->len);
1809
1810
/* end-of-frame status and timestamp */
1811
status = le32_to_cpu(rx_end->status);
1812
bcn_tmr = le32_to_cpu(rx_end->beacon_timestamp);
1813
tsf_low = le64_to_cpu(rx_end->timestamp) & 0x0ffffffff;
1814
tsf = le64_to_cpu(rx_end->timestamp);
1815
1816
/* signal statistics */
1817
rssi = rx_stats->rssi;
1818
agc = rx_stats->agc;
1819
sig_avg = le16_to_cpu(rx_stats->sig_avg);
1820
noise_diff = le16_to_cpu(rx_stats->noise_diff);
1821
1822
to_us = !compare_ether_addr(header->addr1, priv->mac_addr);
1823
1824
/* if data frame is to us and all is good,
1825
* (optionally) print summary for only 1 out of every 100 */
1826
if (to_us && (fc & ~IEEE80211_FCTL_PROTECTED) ==
1827
(IEEE80211_FCTL_FROMDS | IEEE80211_FTYPE_DATA)) {
1828
dataframe = 1;
1829
if (!group100)
1830
print_summary = 1; /* print each frame */
1831
else if (priv->framecnt_to_us < 100) {
1832
priv->framecnt_to_us++;
1833
print_summary = 0;
1834
} else {
1835
priv->framecnt_to_us = 0;
1836
print_summary = 1;
1837
hundred = 1;
1838
}
1839
} else {
1840
/* print summary for all other frames */
1841
print_summary = 1;
1842
}
1843
1844
if (print_summary) {
1845
char *title;
1846
u32 rate;
1847
1848
if (hundred)
1849
title = "100Frames";
1850
else if (fc & IEEE80211_FCTL_RETRY)
1851
title = "Retry";
1852
else if (ieee80211_is_assoc_response(fc))
1853
title = "AscRsp";
1854
else if (ieee80211_is_reassoc_response(fc))
1855
title = "RasRsp";
1856
else if (ieee80211_is_probe_response(fc)) {
1857
title = "PrbRsp";
1858
print_dump = 1; /* dump frame contents */
1859
} else if (ieee80211_is_beacon(fc)) {
1860
title = "Beacon";
1861
print_dump = 1; /* dump frame contents */
1862
} else if (ieee80211_is_atim(fc))
1863
title = "ATIM";
1864
else if (ieee80211_is_auth(fc))
1865
title = "Auth";
1866
else if (ieee80211_is_deauth(fc))
1867
title = "DeAuth";
1868
else if (ieee80211_is_disassoc(fc))
1869
title = "DisAssoc";
1870
else
1871
title = "Frame";
1872
1873
rate = iwl4965_rate_index_from_plcp(rate_sym);
1874
if (rate == -1)
1875
rate = 0;
1876
else
1877
rate = iwl4965_rates[rate].ieee / 2;
1878
1879
/* print frame summary.
1880
* MAC addresses show just the last byte (for brevity),
1881
* but you can hack it to show more, if you'd like to. */
1882
if (dataframe)
1883
IWL_DEBUG_RX("%s: mhd=0x%04x, dst=0x%02x, "
1884
"len=%u, rssi=%d, chnl=%d, rate=%u, \n",
1885
title, fc, header->addr1[5],
1886
length, rssi, channel, rate);
1887
else {
1888
/* src/dst addresses assume managed mode */
1889
IWL_DEBUG_RX("%s: 0x%04x, dst=0x%02x, "
1890
"src=0x%02x, rssi=%u, tim=%lu usec, "
1891
"phy=0x%02x, chnl=%d\n",
1892
title, fc, header->addr1[5],
1893
header->addr3[5], rssi,
1894
tsf_low - priv->scan_start_tsf,
1895
phy_flags, channel);
1896
}
1897
}
1898
if (print_dump)
1899
iwl4965_print_hex_dump(IWL_DL_RX, data, length);
1900
}
1901
#endif
1902
1903
static void iwl4965_unset_hw_setting(struct iwl4965_priv *priv)
1904
{
1905
if (priv->hw_setting.shared_virt)
1906
pci_free_consistent(priv->pci_dev,
1907
sizeof(struct iwl4965_shared),
1908
priv->hw_setting.shared_virt,
1909
priv->hw_setting.shared_phys);
1910
}
1911
1912
/**
1913
* iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
1914
*
1915
* return : set the bit for each supported rate insert in ie
1916
*/
1917
static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1918
u16 basic_rate, int *left)
1919
{
1920
u16 ret_rates = 0, bit;
1921
int i;
1922
u8 *cnt = ie;
1923
u8 *rates = ie + 1;
1924
1925
for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1926
if (bit & supported_rate) {
1927
ret_rates |= bit;
1928
rates[*cnt] = iwl4965_rates[i].ieee |
1929
((bit & basic_rate) ? 0x80 : 0x00);
1930
(*cnt)++;
1931
(*left)--;
1932
if ((*left <= 0) ||
1933
(*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1934
break;
1935
}
1936
}
1937
1938
return ret_rates;
1939
}
1940
1941
#ifdef CONFIG_IWL4965_HT
1942
void static iwl4965_set_ht_capab(struct ieee80211_hw *hw,
1943
struct ieee80211_ht_capability *ht_cap,
1944
u8 use_wide_chan);
1945
#endif
1946
1947
/**
1948
* iwl4965_fill_probe_req - fill in all required fields and IE for probe request
1949
*/
1950
static u16 iwl4965_fill_probe_req(struct iwl4965_priv *priv,
1951
struct ieee80211_mgmt *frame,
1952
int left, int is_direct)
1953
{
1954
int len = 0;
1955
u8 *pos = NULL;
1956
u16 active_rates, ret_rates, cck_rates, active_rate_basic;
1957
1958
/* Make sure there is enough space for the probe request,
1959
* two mandatory IEs and the data */
1960
left -= 24;
1961
if (left < 0)
1962
return 0;
1963
len += 24;
1964
1965
frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1966
memcpy(frame->da, iwl4965_broadcast_addr, ETH_ALEN);
1967
memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1968
memcpy(frame->bssid, iwl4965_broadcast_addr, ETH_ALEN);
1969
frame->seq_ctrl = 0;
1970
1971
/* fill in our indirect SSID IE */
1972
/* ...next IE... */
1973
1974
left -= 2;
1975
if (left < 0)
1976
return 0;
1977
len += 2;
1978
pos = &(frame->u.probe_req.variable[0]);
1979
*pos++ = WLAN_EID_SSID;
1980
*pos++ = 0;
1981
1982
/* fill in our direct SSID IE... */
1983
if (is_direct) {
1984
/* ...next IE... */
1985
left -= 2 + priv->essid_len;
1986
if (left < 0)
1987
return 0;
1988
/* ... fill it in... */
1989
*pos++ = WLAN_EID_SSID;
1990
*pos++ = priv->essid_len;
1991
memcpy(pos, priv->essid, priv->essid_len);
1992
pos += priv->essid_len;
1993
len += 2 + priv->essid_len;
1994
}
1995
1996
/* fill in supported rate */
1997
/* ...next IE... */
1998
left -= 2;
1999
if (left < 0)
2000
return 0;
2001
2002
/* ... fill it in... */
2003
*pos++ = WLAN_EID_SUPP_RATES;
2004
*pos = 0;
2005
2006
/* exclude 60M rate */
2007
active_rates = priv->rates_mask;
2008
active_rates &= ~IWL_RATE_60M_MASK;
2009
2010
active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
2011
2012
cck_rates = IWL_CCK_RATES_MASK & active_rates;
2013
ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
2014
active_rate_basic, &left);
2015
active_rates &= ~ret_rates;
2016
2017
ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
2018
active_rate_basic, &left);
2019
active_rates &= ~ret_rates;
2020
2021
len += 2 + *pos;
2022
pos += (*pos) + 1;
2023
if (active_rates == 0)
2024
goto fill_end;
2025
2026
/* fill in supported extended rate */
2027
/* ...next IE... */
2028
left -= 2;
2029
if (left < 0)
2030
return 0;
2031
/* ... fill it in... */
2032
*pos++ = WLAN_EID_EXT_SUPP_RATES;
2033
*pos = 0;
2034
iwl4965_supported_rate_to_ie(pos, active_rates,
2035
active_rate_basic, &left);
2036
if (*pos > 0)
2037
len += 2 + *pos;
2038
2039
#ifdef CONFIG_IWL4965_HT
2040
if (is_direct && priv->is_ht_enabled) {
2041
u8 use_wide_chan = 1;
2042
2043
if (priv->channel_width != IWL_CHANNEL_WIDTH_40MHZ)
2044
use_wide_chan = 0;
2045
pos += (*pos) + 1;
2046
*pos++ = WLAN_EID_HT_CAPABILITY;
2047
*pos++ = sizeof(struct ieee80211_ht_capability);
2048
iwl4965_set_ht_capab(NULL, (struct ieee80211_ht_capability *)pos,
2049
use_wide_chan);
2050
len += 2 + sizeof(struct ieee80211_ht_capability);
2051
}
2052
#endif /*CONFIG_IWL4965_HT */
2053
2054
fill_end:
2055
return (u16)len;
2056
}
2057
2058
/*
2059
* QoS support
2060
*/
2061
#ifdef CONFIG_IWL4965_QOS
2062
static int iwl4965_send_qos_params_command(struct iwl4965_priv *priv,
2063
struct iwl4965_qosparam_cmd *qos)
2064
{
2065
2066
return iwl4965_send_cmd_pdu(priv, REPLY_QOS_PARAM,
2067
sizeof(struct iwl4965_qosparam_cmd), qos);
2068
}
2069
2070
static void iwl4965_reset_qos(struct iwl4965_priv *priv)
2071
{
2072
u16 cw_min = 15;
2073
u16 cw_max = 1023;
2074
u8 aifs = 2;
2075
u8 is_legacy = 0;
2076
unsigned long flags;
2077
int i;
2078
2079
spin_lock_irqsave(&priv->lock, flags);
2080
priv->qos_data.qos_active = 0;
2081
2082
if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) {
2083
if (priv->qos_data.qos_enable)
2084
priv->qos_data.qos_active = 1;
2085
if (!(priv->active_rate & 0xfff0)) {
2086
cw_min = 31;
2087
is_legacy = 1;
2088
}
2089
} else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2090
if (priv->qos_data.qos_enable)
2091
priv->qos_data.qos_active = 1;
2092
} else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
2093
cw_min = 31;
2094
is_legacy = 1;
2095
}
2096
2097
if (priv->qos_data.qos_active)
2098
aifs = 3;
2099
2100
priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
2101
priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
2102
priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
2103
priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
2104
priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
2105
2106
if (priv->qos_data.qos_active) {
2107
i = 1;
2108
priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
2109
priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
2110
priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
2111
priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
2112
priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2113
2114
i = 2;
2115
priv->qos_data.def_qos_parm.ac[i].cw_min =
2116
cpu_to_le16((cw_min + 1) / 2 - 1);
2117
priv->qos_data.def_qos_parm.ac[i].cw_max =
2118
cpu_to_le16(cw_max);
2119
priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
2120
if (is_legacy)
2121
priv->qos_data.def_qos_parm.ac[i].edca_txop =
2122
cpu_to_le16(6016);
2123
else
2124
priv->qos_data.def_qos_parm.ac[i].edca_txop =
2125
cpu_to_le16(3008);
2126
priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2127
2128
i = 3;
2129
priv->qos_data.def_qos_parm.ac[i].cw_min =
2130
cpu_to_le16((cw_min + 1) / 4 - 1);
2131
priv->qos_data.def_qos_parm.ac[i].cw_max =
2132
cpu_to_le16((cw_max + 1) / 2 - 1);
2133
priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
2134
priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2135
if (is_legacy)
2136
priv->qos_data.def_qos_parm.ac[i].edca_txop =
2137
cpu_to_le16(3264);
2138
else
2139
priv->qos_data.def_qos_parm.ac[i].edca_txop =
2140
cpu_to_le16(1504);
2141
} else {
2142
for (i = 1; i < 4; i++) {
2143
priv->qos_data.def_qos_parm.ac[i].cw_min =
2144
cpu_to_le16(cw_min);
2145
priv->qos_data.def_qos_parm.ac[i].cw_max =
2146
cpu_to_le16(cw_max);
2147
priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
2148
priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
2149
priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2150
}
2151
}
2152
IWL_DEBUG_QOS("set QoS to default \n");
2153
2154
spin_unlock_irqrestore(&priv->lock, flags);
2155
}
2156
2157
static void iwl4965_activate_qos(struct iwl4965_priv *priv, u8 force)
2158
{
2159
unsigned long flags;
2160
2161
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2162
return;
2163
2164
if (!priv->qos_data.qos_enable)
2165
return;
2166
2167
spin_lock_irqsave(&priv->lock, flags);
2168
priv->qos_data.def_qos_parm.qos_flags = 0;
2169
2170
if (priv->qos_data.qos_cap.q_AP.queue_request &&
2171
!priv->qos_data.qos_cap.q_AP.txop_request)
2172
priv->qos_data.def_qos_parm.qos_flags |=
2173
QOS_PARAM_FLG_TXOP_TYPE_MSK;
2174
if (priv->qos_data.qos_active)
2175
priv->qos_data.def_qos_parm.qos_flags |=
2176
QOS_PARAM_FLG_UPDATE_EDCA_MSK;
2177
2178
#ifdef CONFIG_IWL4965_HT
2179
if (priv->is_ht_enabled && priv->current_assoc_ht.is_ht)
2180
priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
2181
#endif /* CONFIG_IWL4965_HT */
2182
2183
spin_unlock_irqrestore(&priv->lock, flags);
2184
2185
if (force || iwl4965_is_associated(priv)) {
2186
IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
2187
priv->qos_data.qos_active,
2188
priv->qos_data.def_qos_parm.qos_flags);
2189
2190
iwl4965_send_qos_params_command(priv,
2191
&(priv->qos_data.def_qos_parm));
2192
}
2193
}
2194
2195
#endif /* CONFIG_IWL4965_QOS */
2196
/*
2197
* Power management (not Tx power!) functions
2198
*/
2199
#define MSEC_TO_USEC 1024
2200
2201
#define NOSLP __constant_cpu_to_le16(0), 0, 0
2202
#define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
2203
#define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
2204
#define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
2205
__constant_cpu_to_le32(X1), \
2206
__constant_cpu_to_le32(X2), \
2207
__constant_cpu_to_le32(X3), \
2208
__constant_cpu_to_le32(X4)}
2209
2210
2211
/* default power management (not Tx power) table values */
2212
/* for tim 0-10 */
2213
static struct iwl4965_power_vec_entry range_0[IWL_POWER_AC] = {
2214
{{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2215
{{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
2216
{{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
2217
{{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
2218
{{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
2219
{{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
2220
};
2221
2222
/* for tim > 10 */
2223
static struct iwl4965_power_vec_entry range_1[IWL_POWER_AC] = {
2224
{{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2225
{{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
2226
SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
2227
{{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
2228
SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
2229
{{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
2230
SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
2231
{{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
2232
{{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
2233
SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
2234
};
2235
2236
int iwl4965_power_init_handle(struct iwl4965_priv *priv)
2237
{
2238
int rc = 0, i;
2239
struct iwl4965_power_mgr *pow_data;
2240
int size = sizeof(struct iwl4965_power_vec_entry) * IWL_POWER_AC;
2241
u16 pci_pm;
2242
2243
IWL_DEBUG_POWER("Initialize power \n");
2244
2245
pow_data = &(priv->power_data);
2246
2247
memset(pow_data, 0, sizeof(*pow_data));
2248
2249
pow_data->active_index = IWL_POWER_RANGE_0;
2250
pow_data->dtim_val = 0xffff;
2251
2252
memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
2253
memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
2254
2255
rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
2256
if (rc != 0)
2257
return 0;
2258
else {
2259
struct iwl4965_powertable_cmd *cmd;
2260
2261
IWL_DEBUG_POWER("adjust power command flags\n");
2262
2263
for (i = 0; i < IWL_POWER_AC; i++) {
2264
cmd = &pow_data->pwr_range_0[i].cmd;
2265
2266
if (pci_pm & 0x1)
2267
cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
2268
else
2269
cmd->flags |= IWL_POWER_PCI_PM_MSK;
2270
}
2271
}
2272
return rc;
2273
}
2274
2275
static int iwl4965_update_power_cmd(struct iwl4965_priv *priv,
2276
struct iwl4965_powertable_cmd *cmd, u32 mode)
2277
{
2278
int rc = 0, i;
2279
u8 skip;
2280
u32 max_sleep = 0;
2281
struct iwl4965_power_vec_entry *range;
2282
u8 period = 0;
2283
struct iwl4965_power_mgr *pow_data;
2284
2285
if (mode > IWL_POWER_INDEX_5) {
2286
IWL_DEBUG_POWER("Error invalid power mode \n");
2287
return -1;
2288
}
2289
pow_data = &(priv->power_data);
2290
2291
if (pow_data->active_index == IWL_POWER_RANGE_0)
2292
range = &pow_data->pwr_range_0[0];
2293
else
2294
range = &pow_data->pwr_range_1[1];
2295
2296
memcpy(cmd, &range[mode].cmd, sizeof(struct iwl4965_powertable_cmd));
2297
2298
#ifdef IWL_MAC80211_DISABLE
2299
if (priv->assoc_network != NULL) {
2300
unsigned long flags;
2301
2302
period = priv->assoc_network->tim.tim_period;
2303
}
2304
#endif /*IWL_MAC80211_DISABLE */
2305
skip = range[mode].no_dtim;
2306
2307
if (period == 0) {
2308
period = 1;
2309
skip = 0;
2310
}
2311
2312
if (skip == 0) {
2313
max_sleep = period;
2314
cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
2315
} else {
2316
__le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
2317
max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
2318
cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
2319
}
2320
2321
for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
2322
if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
2323
cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
2324
}
2325
2326
IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
2327
IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
2328
IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
2329
IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
2330
le32_to_cpu(cmd->sleep_interval[0]),
2331
le32_to_cpu(cmd->sleep_interval[1]),
2332
le32_to_cpu(cmd->sleep_interval[2]),
2333
le32_to_cpu(cmd->sleep_interval[3]),
2334
le32_to_cpu(cmd->sleep_interval[4]));
2335
2336
return rc;
2337
}
2338
2339
static int iwl4965_send_power_mode(struct iwl4965_priv *priv, u32 mode)
2340
{
2341
u32 final_mode = mode;
2342
int rc;
2343
struct iwl4965_powertable_cmd cmd;
2344
2345
/* If on battery, set to 3,
2346
* if plugged into AC power, set to CAM ("continuously aware mode"),
2347
* else user level */
2348
switch (mode) {
2349
case IWL_POWER_BATTERY:
2350
final_mode = IWL_POWER_INDEX_3;
2351
break;
2352
case IWL_POWER_AC:
2353
final_mode = IWL_POWER_MODE_CAM;
2354
break;
2355
default:
2356
final_mode = mode;
2357
break;
2358
}
2359
2360
cmd.keep_alive_beacons = 0;
2361
2362
iwl4965_update_power_cmd(priv, &cmd, final_mode);
2363
2364
rc = iwl4965_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
2365
2366
if (final_mode == IWL_POWER_MODE_CAM)
2367
clear_bit(STATUS_POWER_PMI, &priv->status);
2368
else
2369
set_bit(STATUS_POWER_PMI, &priv->status);
2370
2371
return rc;
2372
}
2373
2374
int iwl4965_is_network_packet(struct iwl4965_priv *priv, struct ieee80211_hdr *header)
2375
{
2376
/* Filter incoming packets to determine if they are targeted toward
2377
* this network, discarding packets coming from ourselves */
2378
switch (priv->iw_mode) {
2379
case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source | BSSID */
2380
/* packets from our adapter are dropped (echo) */
2381
if (!compare_ether_addr(header->addr2, priv->mac_addr))
2382
return 0;
2383
/* {broad,multi}cast packets to our IBSS go through */
2384
if (is_multicast_ether_addr(header->addr1))
2385
return !compare_ether_addr(header->addr3, priv->bssid);
2386
/* packets to our adapter go through */
2387
return !compare_ether_addr(header->addr1, priv->mac_addr);
2388
case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
2389
/* packets from our adapter are dropped (echo) */
2390
if (!compare_ether_addr(header->addr3, priv->mac_addr))
2391
return 0;
2392
/* {broad,multi}cast packets to our BSS go through */
2393
if (is_multicast_ether_addr(header->addr1))
2394
return !compare_ether_addr(header->addr2, priv->bssid);
2395
/* packets to our adapter go through */
2396
return !compare_ether_addr(header->addr1, priv->mac_addr);
2397
}
2398
2399
return 1;
2400
}
2401
2402
#define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2403
2404
static const char *iwl4965_get_tx_fail_reason(u32 status)
2405
{
2406
switch (status & TX_STATUS_MSK) {
2407
case TX_STATUS_SUCCESS:
2408
return "SUCCESS";
2409
TX_STATUS_ENTRY(SHORT_LIMIT);
2410
TX_STATUS_ENTRY(LONG_LIMIT);
2411
TX_STATUS_ENTRY(FIFO_UNDERRUN);
2412
TX_STATUS_ENTRY(MGMNT_ABORT);
2413
TX_STATUS_ENTRY(NEXT_FRAG);
2414
TX_STATUS_ENTRY(LIFE_EXPIRE);
2415
TX_STATUS_ENTRY(DEST_PS);
2416
TX_STATUS_ENTRY(ABORTED);
2417
TX_STATUS_ENTRY(BT_RETRY);
2418
TX_STATUS_ENTRY(STA_INVALID);
2419
TX_STATUS_ENTRY(FRAG_DROPPED);
2420
TX_STATUS_ENTRY(TID_DISABLE);
2421
TX_STATUS_ENTRY(FRAME_FLUSHED);
2422
TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
2423
TX_STATUS_ENTRY(TX_LOCKED);
2424
TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
2425
}
2426
2427
return "UNKNOWN";
2428
}
2429
2430
/**
2431
* iwl4965_scan_cancel - Cancel any currently executing HW scan
2432
*
2433
* NOTE: priv->mutex is not required before calling this function
2434
*/
2435
static int iwl4965_scan_cancel(struct iwl4965_priv *priv)
2436
{
2437
if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
2438
clear_bit(STATUS_SCANNING, &priv->status);
2439
return 0;
2440
}
2441
2442
if (test_bit(STATUS_SCANNING, &priv->status)) {
2443
if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2444
IWL_DEBUG_SCAN("Queuing scan abort.\n");
2445
set_bit(STATUS_SCAN_ABORTING, &priv->status);
2446
queue_work(priv->workqueue, &priv->abort_scan);
2447
2448
} else
2449
IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2450
2451
return test_bit(STATUS_SCANNING, &priv->status);
2452
}
2453
2454
return 0;
2455
}
2456
2457
/**
2458
* iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
2459
* @ms: amount of time to wait (in milliseconds) for scan to abort
2460
*
2461
* NOTE: priv->mutex must be held before calling this function
2462
*/
2463
static int iwl4965_scan_cancel_timeout(struct iwl4965_priv *priv, unsigned long ms)
2464
{
2465
unsigned long now = jiffies;
2466
int ret;
2467
2468
ret = iwl4965_scan_cancel(priv);
2469
if (ret && ms) {
2470
mutex_unlock(&priv->mutex);
2471
while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
2472
test_bit(STATUS_SCANNING, &priv->status))
2473
msleep(1);
2474
mutex_lock(&priv->mutex);
2475
2476
return test_bit(STATUS_SCANNING, &priv->status);
2477
}
2478
2479
return ret;
2480
}
2481
2482
static void iwl4965_sequence_reset(struct iwl4965_priv *priv)
2483
{
2484
/* Reset ieee stats */
2485
2486
/* We don't reset the net_device_stats (ieee->stats) on
2487
* re-association */
2488
2489
priv->last_seq_num = -1;
2490
priv->last_frag_num = -1;
2491
priv->last_packet_time = 0;
2492
2493
iwl4965_scan_cancel(priv);
2494
}
2495
2496
#define MAX_UCODE_BEACON_INTERVAL 4096
2497
#define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
2498
2499
static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
2500
{
2501
u16 new_val = 0;
2502
u16 beacon_factor = 0;
2503
2504
beacon_factor =
2505
(beacon_val + MAX_UCODE_BEACON_INTERVAL)
2506
/ MAX_UCODE_BEACON_INTERVAL;
2507
new_val = beacon_val / beacon_factor;
2508
2509
return cpu_to_le16(new_val);
2510
}
2511
2512
static void iwl4965_setup_rxon_timing(struct iwl4965_priv *priv)
2513
{
2514
u64 interval_tm_unit;
2515
u64 tsf, result;
2516
unsigned long flags;
2517
struct ieee80211_conf *conf = NULL;
2518
u16 beacon_int = 0;
2519
2520
conf = ieee80211_get_hw_conf(priv->hw);
2521
2522
spin_lock_irqsave(&priv->lock, flags);
2523
priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
2524
priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);
2525
2526
priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
2527
2528
tsf = priv->timestamp1;
2529
tsf = ((tsf << 32) | priv->timestamp0);
2530
2531
beacon_int = priv->beacon_int;
2532
spin_unlock_irqrestore(&priv->lock, flags);
2533
2534
if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
2535
if (beacon_int == 0) {
2536
priv->rxon_timing.beacon_interval = cpu_to_le16(100);
2537
priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
2538
} else {
2539
priv->rxon_timing.beacon_interval =
2540
cpu_to_le16(beacon_int);
2541
priv->rxon_timing.beacon_interval =
2542
iwl4965_adjust_beacon_interval(
2543
le16_to_cpu(priv->rxon_timing.beacon_interval));
2544
}
2545
2546
priv->rxon_timing.atim_window = 0;
2547
} else {
2548
priv->rxon_timing.beacon_interval =
2549
iwl4965_adjust_beacon_interval(conf->beacon_int);
2550
/* TODO: we need to get atim_window from upper stack
2551
* for now we set to 0 */
2552
priv->rxon_timing.atim_window = 0;
2553
}
2554
2555
interval_tm_unit =
2556
(le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2557
result = do_div(tsf, interval_tm_unit);
2558
priv->rxon_timing.beacon_init_val =
2559
cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2560
2561
IWL_DEBUG_ASSOC
2562
("beacon interval %d beacon timer %d beacon tim %d\n",
2563
le16_to_cpu(priv->rxon_timing.beacon_interval),
2564
le32_to_cpu(priv->rxon_timing.beacon_init_val),
2565
le16_to_cpu(priv->rxon_timing.atim_window));
2566
}
2567
2568
static int iwl4965_scan_initiate(struct iwl4965_priv *priv)
2569
{
2570
if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2571
IWL_ERROR("APs don't scan.\n");
2572
return 0;
2573
}
2574
2575
if (!iwl4965_is_ready_rf(priv)) {
2576
IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2577
return -EIO;
2578
}
2579
2580
if (test_bit(STATUS_SCANNING, &priv->status)) {
2581
IWL_DEBUG_SCAN("Scan already in progress.\n");
2582
return -EAGAIN;
2583
}
2584
2585
if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2586
IWL_DEBUG_SCAN("Scan request while abort pending. "
2587
"Queuing.\n");
2588
return -EAGAIN;
2589
}
2590
2591
IWL_DEBUG_INFO("Starting scan...\n");
2592
priv->scan_bands = 2;
2593
set_bit(STATUS_SCANNING, &priv->status);
2594
priv->scan_start = jiffies;
2595
priv->scan_pass_start = priv->scan_start;
2596
2597
queue_work(priv->workqueue, &priv->request_scan);
2598
2599
return 0;
2600
}
2601
2602
static int iwl4965_set_rxon_hwcrypto(struct iwl4965_priv *priv, int hw_decrypt)
2603
{
2604
struct iwl4965_rxon_cmd *rxon = &priv->staging_rxon;
2605
2606
if (hw_decrypt)
2607
rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2608
else
2609
rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2610
2611
return 0;
2612
}
2613
2614
static void iwl4965_set_flags_for_phymode(struct iwl4965_priv *priv, u8 phymode)
2615
{
2616
if (phymode == MODE_IEEE80211A) {
2617
priv->staging_rxon.flags &=
2618
~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2619
| RXON_FLG_CCK_MSK);
2620
priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2621
} else {
2622
/* Copied from iwl4965_bg_post_associate() */
2623
if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2624
priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2625
else
2626
priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2627
2628
if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2629
priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2630
2631
priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2632
priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2633
priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2634
}
2635
}
2636
2637
/*
2638
* initialize rxon structure with default values from eeprom
2639
*/
2640
static void iwl4965_connection_init_rx_config(struct iwl4965_priv *priv)
2641
{
2642
const struct iwl4965_channel_info *ch_info;
2643
2644
memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2645
2646
switch (priv->iw_mode) {
2647
case IEEE80211_IF_TYPE_AP:
2648
priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2649
break;
2650
2651
case IEEE80211_IF_TYPE_STA:
2652
priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2653
priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2654
break;
2655
2656
case IEEE80211_IF_TYPE_IBSS:
2657
priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2658
priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2659
priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2660
RXON_FILTER_ACCEPT_GRP_MSK;
2661
break;
2662
2663
case IEEE80211_IF_TYPE_MNTR:
2664
priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2665
priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2666
RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2667
break;
2668
}
2669
2670
#if 0
2671
/* TODO: Figure out when short_preamble would be set and cache from
2672
* that */
2673
if (!hw_to_local(priv->hw)->short_preamble)
2674
priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2675
else
2676
priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2677
#endif
2678
2679
ch_info = iwl4965_get_channel_info(priv, priv->phymode,
2680
le16_to_cpu(priv->staging_rxon.channel));
2681
2682
if (!ch_info)
2683
ch_info = &priv->channel_info[0];
2684
2685
/*
2686
* in some case A channels are all non IBSS
2687
* in this case force B/G channel
2688
*/
2689
if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
2690
!(is_channel_ibss(ch_info)))
2691
ch_info = &priv->channel_info[0];
2692
2693
priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2694
if (is_channel_a_band(ch_info))
2695
priv->phymode = MODE_IEEE80211A;
2696
else
2697
priv->phymode = MODE_IEEE80211G;
2698
2699
iwl4965_set_flags_for_phymode(priv, priv->phymode);
2700
2701
priv->staging_rxon.ofdm_basic_rates =
2702
(IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2703
priv->staging_rxon.cck_basic_rates =
2704
(IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2705
2706
priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
2707
RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
2708
memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2709
memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
2710
priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
2711
priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
2712
iwl4965_set_rxon_chain(priv);
2713
}
2714
2715
static int iwl4965_set_mode(struct iwl4965_priv *priv, int mode)
2716
{
2717
if (mode == IEEE80211_IF_TYPE_IBSS) {
2718
const struct iwl4965_channel_info *ch_info;
2719
2720
ch_info = iwl4965_get_channel_info(priv,
2721
priv->phymode,
2722
le16_to_cpu(priv->staging_rxon.channel));
2723
2724
if (!ch_info || !is_channel_ibss(ch_info)) {
2725
IWL_ERROR("channel %d not IBSS channel\n",
2726
le16_to_cpu(priv->staging_rxon.channel));
2727
return -EINVAL;
2728
}
2729
}
2730
2731
priv->iw_mode = mode;
2732
2733
iwl4965_connection_init_rx_config(priv);
2734
memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2735
2736
iwl4965_clear_stations_table(priv);
2737
2738
/* dont commit rxon if rf-kill is on*/
2739
if (!iwl4965_is_ready_rf(priv))
2740
return -EAGAIN;
2741
2742
cancel_delayed_work(&priv->scan_check);
2743
if (iwl4965_scan_cancel_timeout(priv, 100)) {
2744
IWL_WARNING("Aborted scan still in progress after 100ms\n");
2745
IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2746
return -EAGAIN;
2747
}
2748
2749
iwl4965_commit_rxon(priv);
2750
2751
return 0;
2752
}
2753
2754
static void iwl4965_build_tx_cmd_hwcrypto(struct iwl4965_priv *priv,
2755
struct ieee80211_tx_control *ctl,
2756
struct iwl4965_cmd *cmd,
2757
struct sk_buff *skb_frag,
2758
int last_frag)
2759
{
2760
struct iwl4965_hw_key *keyinfo = &priv->stations[ctl->key_idx].keyinfo;
2761
2762
switch (keyinfo->alg) {
2763
case ALG_CCMP:
2764
cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2765
memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2766
IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2767
break;
2768
2769
case ALG_TKIP:
2770
#if 0
2771
cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2772
2773
if (last_frag)
2774
memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2775
8);
2776
else
2777
memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2778
#endif
2779
break;
2780
2781
case ALG_WEP:
2782
cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2783
(ctl->key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2784
2785
if (keyinfo->keylen == 13)
2786
cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2787
2788
memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2789
2790
IWL_DEBUG_TX("Configuring packet for WEP encryption "
2791
"with key %d\n", ctl->key_idx);
2792
break;
2793
2794
case ALG_NONE:
2795
IWL_DEBUG_TX("Tx packet in the clear (encrypt requested).\n");
2796
break;
2797
2798
default:
2799
printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2800
break;
2801
}
2802
}
2803
2804
/*
2805
* handle build REPLY_TX command notification.
2806
*/
2807
static void iwl4965_build_tx_cmd_basic(struct iwl4965_priv *priv,
2808
struct iwl4965_cmd *cmd,
2809
struct ieee80211_tx_control *ctrl,
2810
struct ieee80211_hdr *hdr,
2811
int is_unicast, u8 std_id)
2812
{
2813
__le16 *qc;
2814
u16 fc = le16_to_cpu(hdr->frame_control);
2815
__le32 tx_flags = cmd->cmd.tx.tx_flags;
2816
2817
cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2818
if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
2819
tx_flags |= TX_CMD_FLG_ACK_MSK;
2820
if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
2821
tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2822
if (ieee80211_is_probe_response(fc) &&
2823
!(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2824
tx_flags |= TX_CMD_FLG_TSF_MSK;
2825
} else {
2826
tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2827
tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2828
}
2829
2830
if (ieee80211_is_back_request(fc))
2831
tx_flags |= TX_CMD_FLG_ACK_MSK | TX_CMD_FLG_IMM_BA_RSP_MASK;
2832
2833
2834
cmd->cmd.tx.sta_id = std_id;
2835
if (ieee80211_get_morefrag(hdr))
2836
tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2837
2838
qc = ieee80211_get_qos_ctrl(hdr);
2839
if (qc) {
2840
cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
2841
tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2842
} else
2843
tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2844
2845
if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
2846
tx_flags |= TX_CMD_FLG_RTS_MSK;
2847
tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2848
} else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
2849
tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2850
tx_flags |= TX_CMD_FLG_CTS_MSK;
2851
}
2852
2853
if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2854
tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2855
2856
tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2857
if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
2858
if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
2859
(fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
2860
cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2861
else
2862
cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2863
} else {
2864
cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2865
#ifdef CONFIG_IWL4965_LEDS
2866
priv->rxtxpackets += le16_to_cpu(cmd->cmd.tx.len);
2867
#endif
2868
}
2869
2870
cmd->cmd.tx.driver_txop = 0;
2871
cmd->cmd.tx.tx_flags = tx_flags;
2872
cmd->cmd.tx.next_frame_len = 0;
2873
}
2874
2875
/**
2876
* iwl4965_get_sta_id - Find station's index within station table
2877
*
2878
* If new IBSS station, create new entry in station table
2879
*/
2880
static int iwl4965_get_sta_id(struct iwl4965_priv *priv,
2881
struct ieee80211_hdr *hdr)
2882
{
2883
int sta_id;
2884
u16 fc = le16_to_cpu(hdr->frame_control);
2885
2886
/* If this frame is broadcast or management, use broadcast station id */
2887
if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2888
is_multicast_ether_addr(hdr->addr1))
2889
return priv->hw_setting.bcast_sta_id;
2890
2891
switch (priv->iw_mode) {
2892
2893
/* If we are a client station in a BSS network, use the special
2894
* AP station entry (that's the only station we communicate with) */
2895
case IEEE80211_IF_TYPE_STA:
2896
return IWL_AP_ID;
2897
2898
/* If we are an AP, then find the station, or use BCAST */
2899
case IEEE80211_IF_TYPE_AP:
2900
sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2901
if (sta_id != IWL_INVALID_STATION)
2902
return sta_id;
2903
return priv->hw_setting.bcast_sta_id;
2904
2905
/* If this frame is going out to an IBSS network, find the station,
2906
* or create a new station table entry */
2907
case IEEE80211_IF_TYPE_IBSS:
2908
sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2909
if (sta_id != IWL_INVALID_STATION)
2910
return sta_id;
2911
2912
/* Create new station table entry */
2913
sta_id = iwl4965_add_station_flags(priv, hdr->addr1, 0, CMD_ASYNC);
2914
2915
if (sta_id != IWL_INVALID_STATION)
2916
return sta_id;
2917
2918
IWL_DEBUG_DROP("Station " MAC_FMT " not in station map. "
2919
"Defaulting to broadcast...\n",
2920
MAC_ARG(hdr->addr1));
2921
iwl4965_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2922
return priv->hw_setting.bcast_sta_id;
2923
2924
default:
2925
IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
2926
return priv->hw_setting.bcast_sta_id;
2927
}
2928
}
2929
2930
/*
2931
* start REPLY_TX command process
2932
*/
2933
static int iwl4965_tx_skb(struct iwl4965_priv *priv,
2934
struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2935
{
2936
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2937
struct iwl4965_tfd_frame *tfd;
2938
u32 *control_flags;
2939
int txq_id = ctl->queue;
2940
struct iwl4965_tx_queue *txq = NULL;
2941
struct iwl4965_queue *q = NULL;
2942
dma_addr_t phys_addr;
2943
dma_addr_t txcmd_phys;
2944
dma_addr_t scratch_phys;
2945
struct iwl4965_cmd *out_cmd = NULL;
2946
u16 len, idx, len_org;
2947
u8 id, hdr_len, unicast;
2948
u8 sta_id;
2949
u16 seq_number = 0;
2950
u16 fc;
2951
__le16 *qc;
2952
u8 wait_write_ptr = 0;
2953
unsigned long flags;
2954
int rc;
2955
2956
spin_lock_irqsave(&priv->lock, flags);
2957
if (iwl4965_is_rfkill(priv)) {
2958
IWL_DEBUG_DROP("Dropping - RF KILL\n");
2959
goto drop_unlock;
2960
}
2961
2962
if (!priv->interface_id) {
2963
IWL_DEBUG_DROP("Dropping - !priv->interface_id\n");
2964
goto drop_unlock;
2965
}
2966
2967
if ((ctl->tx_rate & 0xFF) == IWL_INVALID_RATE) {
2968
IWL_ERROR("ERROR: No TX rate available.\n");
2969
goto drop_unlock;
2970
}
2971
2972
unicast = !is_multicast_ether_addr(hdr->addr1);
2973
id = 0;
2974
2975
fc = le16_to_cpu(hdr->frame_control);
2976
2977
#ifdef CONFIG_IWL4965_DEBUG
2978
if (ieee80211_is_auth(fc))
2979
IWL_DEBUG_TX("Sending AUTH frame\n");
2980
else if (ieee80211_is_assoc_request(fc))
2981
IWL_DEBUG_TX("Sending ASSOC frame\n");
2982
else if (ieee80211_is_reassoc_request(fc))
2983
IWL_DEBUG_TX("Sending REASSOC frame\n");
2984
#endif
2985
2986
/* drop all data frame if we are not associated */
2987
if (!iwl4965_is_associated(priv) && !priv->assoc_id &&
2988
((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)) {
2989
IWL_DEBUG_DROP("Dropping - !iwl4965_is_associated\n");
2990
goto drop_unlock;
2991
}
2992
2993
spin_unlock_irqrestore(&priv->lock, flags);
2994
2995
hdr_len = iwlwifi_ieee80211_get_hdrlen(fc);
2996
2997
/* Find (or create) index into station table for destination station */
2998
sta_id = iwl4965_get_sta_id(priv, hdr);
2999
if (sta_id == IWL_INVALID_STATION) {
3000
IWL_DEBUG_DROP("Dropping - INVALID STATION: " MAC_FMT "\n",
3001
MAC_ARG(hdr->addr1));
3002
goto drop;
3003
}
3004
3005
IWL_DEBUG_RATE("station Id %d\n", sta_id);
3006
3007
qc = ieee80211_get_qos_ctrl(hdr);
3008
if (qc) {
3009
u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
3010
seq_number = priv->stations[sta_id].tid[tid].seq_number &
3011
IEEE80211_SCTL_SEQ;
3012
hdr->seq_ctrl = cpu_to_le16(seq_number) |
3013
(hdr->seq_ctrl &
3014
__constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
3015
seq_number += 0x10;
3016
#ifdef CONFIG_IWL4965_HT
3017
#ifdef CONFIG_IWL4965_HT_AGG
3018
/* aggregation is on for this <sta,tid> */
3019
if (ctl->flags & IEEE80211_TXCTL_HT_MPDU_AGG)
3020
txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
3021
#endif /* CONFIG_IWL4965_HT_AGG */
3022
#endif /* CONFIG_IWL4965_HT */
3023
}
3024
3025
/* Descriptor for chosen Tx queue */
3026
txq = &priv->txq[txq_id];
3027
q = &txq->q;
3028
3029
spin_lock_irqsave(&priv->lock, flags);
3030
3031
/* Set up first empty TFD within this queue's circular TFD buffer */
3032
tfd = &txq->bd[q->write_ptr];
3033
memset(tfd, 0, sizeof(*tfd));
3034
control_flags = (u32 *) tfd;
3035
idx = get_cmd_index(q, q->write_ptr, 0);
3036
3037
/* Set up driver data for this TFD */
3038
memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl4965_tx_info));
3039
txq->txb[q->write_ptr].skb[0] = skb;
3040
memcpy(&(txq->txb[q->write_ptr].status.control),
3041
ctl, sizeof(struct ieee80211_tx_control));
3042
3043
/* Set up first empty entry in queue's array of Tx/cmd buffers */
3044
out_cmd = &txq->cmd[idx];
3045
memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
3046
memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
3047
3048
/*
3049
* Set up the Tx-command (not MAC!) header.
3050
* Store the chosen Tx queue and TFD index within the sequence field;
3051
* after Tx, uCode's Tx response will return this value so driver can
3052
* locate the frame within the tx queue and do post-tx processing.
3053
*/
3054
out_cmd->hdr.cmd = REPLY_TX;
3055
out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
3056
INDEX_TO_SEQ(q->write_ptr)));
3057
3058
/* Copy MAC header from skb into command buffer */
3059
memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
3060
3061
/*
3062
* Use the first empty entry in this queue's command buffer array
3063
* to contain the Tx command and MAC header concatenated together
3064
* (payload data will be in another buffer).
3065
* Size of this varies, due to varying MAC header length.
3066
* If end is not dword aligned, we'll have 2 extra bytes at the end
3067
* of the MAC header (device reads on dword boundaries).
3068
* We'll tell device about this padding later.
3069
*/
3070
len = priv->hw_setting.tx_cmd_len +
3071
sizeof(struct iwl4965_cmd_header) + hdr_len;
3072
3073
len_org = len;
3074
len = (len + 3) & ~3;
3075
3076
if (len_org != len)
3077
len_org = 1;
3078
else
3079
len_org = 0;
3080
3081
/* Physical address of this Tx command's header (not MAC header!),
3082
* within command buffer array. */
3083
txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl4965_cmd) * idx +
3084
offsetof(struct iwl4965_cmd, hdr);
3085
3086
/* Add buffer containing Tx command and MAC(!) header to TFD's
3087
* first entry */
3088
iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
3089
3090
if (ctl->key_idx != -1)
3091
iwl4965_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, 0);
3092
3093
/* Set up TFD's 2nd entry to point directly to remainder of skb,
3094
* if any (802.11 null frames have no payload). */
3095
len = skb->len - hdr_len;
3096
if (len) {
3097
phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
3098
len, PCI_DMA_TODEVICE);
3099
iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
3100
}
3101
3102
/* Tell 4965 about any 2-byte padding after MAC header */
3103
if (len_org)
3104
out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
3105
3106
/* Total # bytes to be transmitted */
3107
len = (u16)skb->len;
3108
out_cmd->cmd.tx.len = cpu_to_le16(len);
3109
3110
/* TODO need this for burst mode later on */
3111
iwl4965_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
3112
3113
/* set is_hcca to 0; it probably will never be implemented */
3114
iwl4965_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
3115
3116
scratch_phys = txcmd_phys + sizeof(struct iwl4965_cmd_header) +
3117
offsetof(struct iwl4965_tx_cmd, scratch);
3118
out_cmd->cmd.tx.dram_lsb_ptr = cpu_to_le32(scratch_phys);
3119
out_cmd->cmd.tx.dram_msb_ptr = iwl_get_dma_hi_address(scratch_phys);
3120
3121
#ifdef CONFIG_IWL4965_HT_AGG
3122
#ifdef CONFIG_IWL4965_HT
3123
/* TODO: move this functionality to rate scaling */
3124
iwl4965_tl_get_stats(priv, hdr);
3125
#endif /* CONFIG_IWL4965_HT_AGG */
3126
#endif /*CONFIG_IWL4965_HT */
3127
3128
3129
if (!ieee80211_get_morefrag(hdr)) {
3130
txq->need_update = 1;
3131
if (qc) {
3132
u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
3133
priv->stations[sta_id].tid[tid].seq_number = seq_number;
3134
}
3135
} else {
3136
wait_write_ptr = 1;
3137
txq->need_update = 0;
3138
}
3139
3140
iwl4965_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
3141
sizeof(out_cmd->cmd.tx));
3142
3143
iwl4965_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
3144
iwlwifi_ieee80211_get_hdrlen(fc));
3145
3146
/* Set up entry for this TFD in Tx byte-count array */
3147
iwl4965_tx_queue_update_wr_ptr(priv, txq, len);
3148
3149
/* Tell device the write index *just past* this latest filled TFD */
3150
q->write_ptr = iwl4965_queue_inc_wrap(q->write_ptr, q->n_bd);
3151
rc = iwl4965_tx_queue_update_write_ptr(priv, txq);
3152
spin_unlock_irqrestore(&priv->lock, flags);
3153
3154
if (rc)
3155
return rc;
3156
3157
if ((iwl4965_queue_space(q) < q->high_mark)
3158
&& priv->mac80211_registered) {
3159
if (wait_write_ptr) {
3160
spin_lock_irqsave(&priv->lock, flags);
3161
txq->need_update = 1;
3162
iwl4965_tx_queue_update_write_ptr(priv, txq);
3163
spin_unlock_irqrestore(&priv->lock, flags);
3164
}
3165
3166
iwlwifi_ieee80211_stop_queue(priv->hw, ctl->queue);
3167
}
3168
3169
return 0;
3170
3171
drop_unlock:
3172
spin_unlock_irqrestore(&priv->lock, flags);
3173
drop:
3174
return -1;
3175
}
3176
3177
static void iwl4965_set_rate(struct iwl4965_priv *priv)
3178
{
3179
const struct ieee80211_hw_mode *hw = NULL;
3180
struct ieee80211_rate *rate;
3181
int i;
3182
3183
hw = iwl4965_get_hw_mode(priv, priv->phymode);
3184
if (!hw) {
3185
IWL_ERROR("Failed to set rate: unable to get hw mode\n");
3186
return;
3187
}
3188
3189
priv->active_rate = 0;
3190
priv->active_rate_basic = 0;
3191
3192
IWL_DEBUG_RATE("Setting rates for 802.11%c\n",
3193
hw->mode == MODE_IEEE80211A ?
3194
'a' : ((hw->mode == MODE_IEEE80211B) ? 'b' : 'g'));
3195
3196
for (i = 0; i < hw->num_rates; i++) {
3197
rate = &(hw->rates[i]);
3198
if ((rate->val < IWL_RATE_COUNT) &&
3199
(rate->flags & IEEE80211_RATE_SUPPORTED)) {
3200
IWL_DEBUG_RATE("Adding rate index %d (plcp %d)%s\n",
3201
rate->val, iwl4965_rates[rate->val].plcp,
3202
(rate->flags & IEEE80211_RATE_BASIC) ?
3203
"*" : "");
3204
priv->active_rate |= (1 << rate->val);
3205
if (rate->flags & IEEE80211_RATE_BASIC)
3206
priv->active_rate_basic |= (1 << rate->val);
3207
} else
3208
IWL_DEBUG_RATE("Not adding rate %d (plcp %d)\n",
3209
rate->val, iwl4965_rates[rate->val].plcp);
3210
}
3211
3212
IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
3213
priv->active_rate, priv->active_rate_basic);
3214
3215
/*
3216
* If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
3217
* otherwise set it to the default of all CCK rates and 6, 12, 24 for
3218
* OFDM
3219
*/
3220
if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
3221
priv->staging_rxon.cck_basic_rates =
3222
((priv->active_rate_basic &
3223
IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
3224
else
3225
priv->staging_rxon.cck_basic_rates =
3226
(IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
3227
3228
if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
3229
priv->staging_rxon.ofdm_basic_rates =
3230
((priv->active_rate_basic &
3231
(IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
3232
IWL_FIRST_OFDM_RATE) & 0xFF;
3233
else
3234
priv->staging_rxon.ofdm_basic_rates =
3235
(IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
3236
}
3237
3238
static void iwl4965_radio_kill_sw(struct iwl4965_priv *priv, int disable_radio)
3239
{
3240
unsigned long flags;
3241
3242
if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
3243
return;
3244
3245
IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
3246
disable_radio ? "OFF" : "ON");
3247
3248
if (disable_radio) {
3249
iwl4965_scan_cancel(priv);
3250
/* FIXME: This is a workaround for AP */
3251
if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3252
spin_lock_irqsave(&priv->lock, flags);
3253
iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
3254
CSR_UCODE_SW_BIT_RFKILL);
3255
spin_unlock_irqrestore(&priv->lock, flags);
3256
iwl4965_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
3257
set_bit(STATUS_RF_KILL_SW, &priv->status);
3258
}
3259
return;
3260
}
3261
3262
spin_lock_irqsave(&priv->lock, flags);
3263
iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3264
3265
clear_bit(STATUS_RF_KILL_SW, &priv->status);
3266
spin_unlock_irqrestore(&priv->lock, flags);
3267
3268
/* wake up ucode */
3269
msleep(10);
3270
3271
spin_lock_irqsave(&priv->lock, flags);
3272
iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
3273
if (!iwl4965_grab_nic_access(priv))
3274
iwl4965_release_nic_access(priv);
3275
spin_unlock_irqrestore(&priv->lock, flags);
3276
3277
if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
3278
IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3279
"disabled by HW switch\n");
3280
return;
3281
}
3282
3283
queue_work(priv->workqueue, &priv->restart);
3284
return;
3285
}
3286
3287
void iwl4965_set_decrypted_flag(struct iwl4965_priv *priv, struct sk_buff *skb,
3288
u32 decrypt_res, struct ieee80211_rx_status *stats)
3289
{
3290
u16 fc =
3291
le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
3292
3293
if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
3294
return;
3295
3296
if (!(fc & IEEE80211_FCTL_PROTECTED))
3297
return;
3298
3299
IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
3300
switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
3301
case RX_RES_STATUS_SEC_TYPE_TKIP:
3302
if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3303
RX_RES_STATUS_BAD_ICV_MIC)
3304
stats->flag |= RX_FLAG_MMIC_ERROR;
3305
case RX_RES_STATUS_SEC_TYPE_WEP:
3306
case RX_RES_STATUS_SEC_TYPE_CCMP:
3307
if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3308
RX_RES_STATUS_DECRYPT_OK) {
3309
IWL_DEBUG_RX("hw decrypt successfully!!!\n");
3310
stats->flag |= RX_FLAG_DECRYPTED;
3311
}
3312
break;
3313
3314
default:
3315
break;
3316
}
3317
}
3318
3319
void iwl4965_handle_data_packet_monitor(struct iwl4965_priv *priv,
3320
struct iwl4965_rx_mem_buffer *rxb,
3321
void *data, short len,
3322
struct ieee80211_rx_status *stats,
3323
u16 phy_flags)
3324
{
3325
struct iwl4965_rt_rx_hdr *iwl4965_rt;
3326
3327
/* First cache any information we need before we overwrite
3328
* the information provided in the skb from the hardware */
3329
s8 signal = stats->ssi;
3330
s8 noise = 0;
3331
int rate = stats->rate;
3332
u64 tsf = stats->mactime;
3333
__le16 phy_flags_hw = cpu_to_le16(phy_flags);
3334
3335
/* We received data from the HW, so stop the watchdog */
3336
if (len > IWL_RX_BUF_SIZE - sizeof(*iwl4965_rt)) {
3337
IWL_DEBUG_DROP("Dropping too large packet in monitor\n");
3338
return;
3339
}
3340
3341
/* copy the frame data to write after where the radiotap header goes */
3342
iwl4965_rt = (void *)rxb->skb->data;
3343
memmove(iwl4965_rt->payload, data, len);
3344
3345
iwl4965_rt->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION;
3346
iwl4965_rt->rt_hdr.it_pad = 0; /* always good to zero */
3347
3348
/* total header + data */
3349
iwl4965_rt->rt_hdr.it_len = cpu_to_le16(sizeof(*iwl4965_rt));
3350
3351
/* Set the size of the skb to the size of the frame */
3352
skb_put(rxb->skb, sizeof(*iwl4965_rt) + len);
3353
3354
/* Big bitfield of all the fields we provide in radiotap */
3355
iwl4965_rt->rt_hdr.it_present =
3356
cpu_to_le32((1 << IEEE80211_RADIOTAP_TSFT) |
3357
(1 << IEEE80211_RADIOTAP_FLAGS) |
3358
(1 << IEEE80211_RADIOTAP_RATE) |
3359
(1 << IEEE80211_RADIOTAP_CHANNEL) |
3360
(1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL) |
3361
(1 << IEEE80211_RADIOTAP_DBM_ANTNOISE) |
3362
(1 << IEEE80211_RADIOTAP_ANTENNA));
3363
3364
/* Zero the flags, we'll add to them as we go */
3365
iwl4965_rt->rt_flags = 0;
3366
3367
iwl4965_rt->rt_tsf = cpu_to_le64(tsf);
3368
3369
/* Convert to dBm */
3370
iwl4965_rt->rt_dbmsignal = signal;
3371
iwl4965_rt->rt_dbmnoise = noise;
3372
3373
/* Convert the channel frequency and set the flags */
3374
iwl4965_rt->rt_channelMHz = cpu_to_le16(stats->freq);
3375
if (!(phy_flags_hw & RX_RES_PHY_FLAGS_BAND_24_MSK))
3376
iwl4965_rt->rt_chbitmask =
3377
cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_5GHZ));
3378
else if (phy_flags_hw & RX_RES_PHY_FLAGS_MOD_CCK_MSK)
3379
iwl4965_rt->rt_chbitmask =
3380
cpu_to_le16((IEEE80211_CHAN_CCK | IEEE80211_CHAN_2GHZ));
3381
else /* 802.11g */
3382
iwl4965_rt->rt_chbitmask =
3383
cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_2GHZ));
3384
3385
rate = iwl4965_rate_index_from_plcp(rate);
3386
if (rate == -1)
3387
iwl4965_rt->rt_rate = 0;
3388
else
3389
iwl4965_rt->rt_rate = iwl4965_rates[rate].ieee;
3390
3391
/* antenna number */
3392
iwl4965_rt->rt_antenna =
3393
le16_to_cpu(phy_flags_hw & RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4;
3394
3395
/* set the preamble flag if we have it */
3396
if (phy_flags_hw & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
3397
iwl4965_rt->rt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3398
3399
IWL_DEBUG_RX("Rx packet of %d bytes.\n", rxb->skb->len);
3400
3401
stats->flag |= RX_FLAG_RADIOTAP;
3402
iwlwifi_ieee80211_rx_irqsafe(priv->hw, rxb->skb, stats);
3403
rxb->skb = NULL;
3404
}
3405
3406
3407
#define IWL_PACKET_RETRY_TIME HZ
3408
3409
int iwl4965_is_duplicate_packet(struct iwl4965_priv *priv, struct ieee80211_hdr *header)
3410
{
3411
u16 sc = le16_to_cpu(header->seq_ctrl);
3412
u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
3413
u16 frag = sc & IEEE80211_SCTL_FRAG;
3414
u16 *last_seq, *last_frag;
3415
unsigned long *last_time;
3416
3417
switch (priv->iw_mode) {
3418
case IEEE80211_IF_TYPE_IBSS:{
3419
struct list_head *p;
3420
struct iwl4965_ibss_seq *entry = NULL;
3421
u8 *mac = header->addr2;
3422
int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
3423
3424
__list_for_each(p, &priv->ibss_mac_hash[index]) {
3425
entry = list_entry(p, struct iwl4965_ibss_seq, list);
3426
if (!compare_ether_addr(entry->mac, mac))
3427
break;
3428
}
3429
if (p == &priv->ibss_mac_hash[index]) {
3430
entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
3431
if (!entry) {
3432
IWL_ERROR("Cannot malloc new mac entry\n");
3433
return 0;
3434
}
3435
memcpy(entry->mac, mac, ETH_ALEN);
3436
entry->seq_num = seq;
3437
entry->frag_num = frag;
3438
entry->packet_time = jiffies;
3439
list_add(&entry->list, &priv->ibss_mac_hash[index]);
3440
return 0;
3441
}
3442
last_seq = &entry->seq_num;
3443
last_frag = &entry->frag_num;
3444
last_time = &entry->packet_time;
3445
break;
3446
}
3447
case IEEE80211_IF_TYPE_STA:
3448
last_seq = &priv->last_seq_num;
3449
last_frag = &priv->last_frag_num;
3450
last_time = &priv->last_packet_time;
3451
break;
3452
default:
3453
return 0;
3454
}
3455
if ((*last_seq == seq) &&
3456
time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
3457
if (*last_frag == frag)
3458
goto drop;
3459
if (*last_frag + 1 != frag)
3460
/* out-of-order fragment */
3461
goto drop;
3462
} else
3463
*last_seq = seq;
3464
3465
*last_frag = frag;
3466
*last_time = jiffies;
3467
return 0;
3468
3469
drop:
3470
return 1;
3471
}
3472
3473
#ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3474
3475
#include "iwl-spectrum.h"
3476
3477
#define BEACON_TIME_MASK_LOW 0x00FFFFFF
3478
#define BEACON_TIME_MASK_HIGH 0xFF000000
3479
#define TIME_UNIT 1024
3480
3481
/*
3482
* extended beacon time format
3483
* time in usec will be changed into a 32-bit value in 8:24 format
3484
* the high 1 byte is the beacon counts
3485
* the lower 3 bytes is the time in usec within one beacon interval
3486
*/
3487
3488
static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
3489
{
3490
u32 quot;
3491
u32 rem;
3492
u32 interval = beacon_interval * 1024;
3493
3494
if (!interval || !usec)
3495
return 0;
3496
3497
quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
3498
rem = (usec % interval) & BEACON_TIME_MASK_LOW;
3499
3500
return (quot << 24) + rem;
3501
}
3502
3503
/* base is usually what we get from ucode with each received frame,
3504
* the same as HW timer counter counting down
3505
*/
3506
3507
static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
3508
{
3509
u32 base_low = base & BEACON_TIME_MASK_LOW;
3510
u32 addon_low = addon & BEACON_TIME_MASK_LOW;
3511
u32 interval = beacon_interval * TIME_UNIT;
3512
u32 res = (base & BEACON_TIME_MASK_HIGH) +
3513
(addon & BEACON_TIME_MASK_HIGH);
3514
3515
if (base_low > addon_low)
3516
res += base_low - addon_low;
3517
else if (base_low < addon_low) {
3518
res += interval + base_low - addon_low;
3519
res += (1 << 24);
3520
} else
3521
res += (1 << 24);
3522
3523
return cpu_to_le32(res);
3524
}
3525
3526
static int iwl4965_get_measurement(struct iwl4965_priv *priv,
3527
struct ieee80211_measurement_params *params,
3528
u8 type)
3529
{
3530
struct iwl4965_spectrum_cmd spectrum;
3531
struct iwl4965_rx_packet *res;
3532
struct iwl4965_host_cmd cmd = {
3533
.id = REPLY_SPECTRUM_MEASUREMENT_CMD,
3534
.data = (void *)&spectrum,
3535
.meta.flags = CMD_WANT_SKB,
3536
};
3537
u32 add_time = le64_to_cpu(params->start_time);
3538
int rc;
3539
int spectrum_resp_status;
3540
int duration = le16_to_cpu(params->duration);
3541
3542
if (iwl4965_is_associated(priv))
3543
add_time =
3544
iwl4965_usecs_to_beacons(
3545
le64_to_cpu(params->start_time) - priv->last_tsf,
3546
le16_to_cpu(priv->rxon_timing.beacon_interval));
3547
3548
memset(&spectrum, 0, sizeof(spectrum));
3549
3550
spectrum.channel_count = cpu_to_le16(1);
3551
spectrum.flags =
3552
RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
3553
spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
3554
cmd.len = sizeof(spectrum);
3555
spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
3556
3557
if (iwl4965_is_associated(priv))
3558
spectrum.start_time =
3559
iwl4965_add_beacon_time(priv->last_beacon_time,
3560
add_time,
3561
le16_to_cpu(priv->rxon_timing.beacon_interval));
3562
else
3563
spectrum.start_time = 0;
3564
3565
spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
3566
spectrum.channels[0].channel = params->channel;
3567
spectrum.channels[0].type = type;
3568
if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
3569
spectrum.flags |= RXON_FLG_BAND_24G_MSK |
3570
RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
3571
3572
rc = iwl4965_send_cmd_sync(priv, &cmd);
3573
if (rc)
3574
return rc;
3575
3576
res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
3577
if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
3578
IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
3579
rc = -EIO;
3580
}
3581
3582
spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
3583
switch (spectrum_resp_status) {
3584
case 0: /* Command will be handled */
3585
if (res->u.spectrum.id != 0xff) {
3586
IWL_DEBUG_INFO
3587
("Replaced existing measurement: %d\n",
3588
res->u.spectrum.id);
3589
priv->measurement_status &= ~MEASUREMENT_READY;
3590
}
3591
priv->measurement_status |= MEASUREMENT_ACTIVE;
3592
rc = 0;
3593
break;
3594
3595
case 1: /* Command will not be handled */
3596
rc = -EAGAIN;
3597
break;
3598
}
3599
3600
dev_kfree_skb_any(cmd.meta.u.skb);
3601
3602
return rc;
3603
}
3604
#endif
3605
3606
static void iwl4965_txstatus_to_ieee(struct iwl4965_priv *priv,
3607
struct iwl4965_tx_info *tx_sta)
3608
{
3609
3610
tx_sta->status.ack_signal = 0;
3611
tx_sta->status.excessive_retries = 0;
3612
tx_sta->status.queue_length = 0;
3613
tx_sta->status.queue_number = 0;
3614
3615
if (in_interrupt())
3616
iwlwifi_iwlwifi_ieee80211_tx_status_irqsafe(priv->hw,
3617
tx_sta->skb[0], &(tx_sta->status));
3618
else
3619
iwlwifi_ieee80211_tx_status(priv->hw,
3620
tx_sta->skb[0], &(tx_sta->status));
3621
3622
tx_sta->skb[0] = NULL;
3623
}
3624
3625
/**
3626
* iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
3627
*
3628
* When FW advances 'R' index, all entries between old and new 'R' index
3629
* need to be reclaimed. As result, some free space forms. If there is
3630
* enough free space (> low mark), wake the stack that feeds us.
3631
*/
3632
int iwl4965_tx_queue_reclaim(struct iwl4965_priv *priv, int txq_id, int index)
3633
{
3634
struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
3635
struct iwl4965_queue *q = &txq->q;
3636
int nfreed = 0;
3637
3638
if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
3639
IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3640
"is out of range [0-%d] %d %d.\n", txq_id,
3641
index, q->n_bd, q->write_ptr, q->read_ptr);
3642
return 0;
3643
}
3644
3645
for (index = iwl4965_queue_inc_wrap(index, q->n_bd);
3646
q->read_ptr != index;
3647
q->read_ptr = iwl4965_queue_inc_wrap(q->read_ptr, q->n_bd)) {
3648
if (txq_id != IWL_CMD_QUEUE_NUM) {
3649
iwl4965_txstatus_to_ieee(priv,
3650
&(txq->txb[txq->q.read_ptr]));
3651
iwl4965_hw_txq_free_tfd(priv, txq);
3652
} else if (nfreed > 1) {
3653
IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
3654
q->write_ptr, q->read_ptr);
3655
queue_work(priv->workqueue, &priv->restart);
3656
}
3657
nfreed++;
3658
}
3659
3660
if (iwl4965_queue_space(q) > q->low_mark && (txq_id >= 0) &&
3661
(txq_id != IWL_CMD_QUEUE_NUM) &&
3662
priv->mac80211_registered)
3663
iwlwifi_ieee80211_wake_queue(priv->hw, txq_id);
3664
3665
3666
return nfreed;
3667
}
3668
3669
static int iwl4965_is_tx_success(u32 status)
3670
{
3671
status &= TX_STATUS_MSK;
3672
return (status == TX_STATUS_SUCCESS)
3673
|| (status == TX_STATUS_DIRECT_DONE);
3674
}
3675
3676
/******************************************************************************
3677
*
3678
* Generic RX handler implementations
3679
*
3680
******************************************************************************/
3681
#ifdef CONFIG_IWL4965_HT
3682
#ifdef CONFIG_IWL4965_HT_AGG
3683
3684
static inline int iwl4965_get_ra_sta_id(struct iwl4965_priv *priv,
3685
struct ieee80211_hdr *hdr)
3686
{
3687
if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
3688
return IWL_AP_ID;
3689
else {
3690
u8 *da = ieee80211_get_DA(hdr);
3691
return iwl4965_hw_find_station(priv, da);
3692
}
3693
}
3694
3695
static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
3696
struct iwl4965_priv *priv, int txq_id, int idx)
3697
{
3698
if (priv->txq[txq_id].txb[idx].skb[0])
3699
return (struct ieee80211_hdr *)priv->txq[txq_id].
3700
txb[idx].skb[0]->data;
3701
return NULL;
3702
}
3703
3704
static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
3705
{
3706
__le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
3707
tx_resp->frame_count);
3708
return le32_to_cpu(*scd_ssn) & MAX_SN;
3709
3710
}
3711
3712
/**
3713
* iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
3714
*/
3715
static int iwl4965_tx_status_reply_tx(struct iwl4965_priv *priv,
3716
struct iwl4965_ht_agg *agg,
3717
struct iwl4965_tx_resp *tx_resp,
3718
u16 start_idx)
3719
{
3720
u32 status;
3721
__le32 *frame_status = &tx_resp->status;
3722
struct iwlwifi_ieee80211_tx_status *tx_status = NULL;
3723
struct ieee80211_hdr *hdr = NULL;
3724
int i, sh;
3725
int txq_id, idx;
3726
u16 seq;
3727
3728
if (agg->wait_for_ba)
3729
IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
3730
3731
agg->frame_count = tx_resp->frame_count;
3732
agg->start_idx = start_idx;
3733
agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3734
agg->bitmap0 = agg->bitmap1 = 0;
3735
3736
/* # frames attempted by Tx command */
3737
if (agg->frame_count == 1) {
3738
/* Only one frame was attempted; no block-ack will arrive */
3739
struct iwl4965_tx_queue *txq ;
3740
status = le32_to_cpu(frame_status[0]);
3741
3742
txq_id = agg->txq_id;
3743
txq = &priv->txq[txq_id];
3744
/* FIXME: code repetition */
3745
IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d \n",
3746
agg->frame_count, agg->start_idx);
3747
3748
tx_status = &(priv->txq[txq_id].txb[txq->q.read_ptr].status);
3749
tx_status->retry_count = tx_resp->failure_frame;
3750
tx_status->queue_number = status & 0xff;
3751
tx_status->queue_length = tx_resp->bt_kill_count;
3752
tx_status->queue_length |= tx_resp->failure_rts;
3753
3754
tx_status->flags = iwl4965_is_tx_success(status)?
3755
IEEE80211_TX_STATUS_ACK : 0;
3756
tx_status->control.tx_rate =
3757
iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags);
3758
/* FIXME: code repetition end */
3759
3760
IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
3761
status & 0xff, tx_resp->failure_frame);
3762
IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
3763
iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
3764
3765
agg->wait_for_ba = 0;
3766
} else {
3767
/* Two or more frames were attempted; expect block-ack */
3768
u64 bitmap = 0;
3769
int start = agg->start_idx;
3770
3771
/* Construct bit-map of pending frames within Tx window */
3772
for (i = 0; i < agg->frame_count; i++) {
3773
u16 sc;
3774
status = le32_to_cpu(frame_status[i]);
3775
seq = status >> 16;
3776
idx = SEQ_TO_INDEX(seq);
3777
txq_id = SEQ_TO_QUEUE(seq);
3778
3779
if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
3780
AGG_TX_STATE_ABORT_MSK))
3781
continue;
3782
3783
IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
3784
agg->frame_count, txq_id, idx);
3785
3786
hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
3787
3788
sc = le16_to_cpu(hdr->seq_ctrl);
3789
if (idx != (SEQ_TO_SN(sc) & 0xff)) {
3790
IWL_ERROR("BUG_ON idx doesn't match seq control"
3791
" idx=%d, seq_idx=%d, seq=%d\n",
3792
idx, SEQ_TO_SN(sc),
3793
hdr->seq_ctrl);
3794
return -1;
3795
}
3796
3797
IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
3798
i, idx, SEQ_TO_SN(sc));
3799
3800
sh = idx - start;
3801
if (sh > 64) {
3802
sh = (start - idx) + 0xff;
3803
bitmap = bitmap << sh;
3804
sh = 0;
3805
start = idx;
3806
} else if (sh < -64)
3807
sh = 0xff - (start - idx);
3808
else if (sh < 0) {
3809
sh = start - idx;
3810
start = idx;
3811
bitmap = bitmap << sh;
3812
sh = 0;
3813
}
3814
bitmap |= (1 << sh);
3815
IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
3816
start, (u32)(bitmap & 0xFFFFFFFF));
3817
}
3818
3819
agg->bitmap0 = bitmap & 0xFFFFFFFF;
3820
agg->bitmap1 = bitmap >> 32;
3821
agg->start_idx = start;
3822
agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3823
IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%x\n",
3824
agg->frame_count, agg->start_idx,
3825
agg->bitmap0);
3826
3827
if (bitmap)
3828
agg->wait_for_ba = 1;
3829
}
3830
return 0;
3831
}
3832
#endif
3833
#endif
3834
3835
/**
3836
* iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
3837
*/
3838
static void iwl4965_rx_reply_tx(struct iwl4965_priv *priv,
3839
struct iwl4965_rx_mem_buffer *rxb)
3840
{
3841
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3842
u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3843
int txq_id = SEQ_TO_QUEUE(sequence);
3844
int index = SEQ_TO_INDEX(sequence);
3845
struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
3846
struct iwlwifi_ieee80211_tx_status *tx_status;
3847
struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
3848
u32 status = le32_to_cpu(tx_resp->status);
3849
#ifdef CONFIG_IWL4965_HT
3850
#ifdef CONFIG_IWL4965_HT_AGG
3851
int tid, sta_id;
3852
#endif
3853
#endif
3854
3855
if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
3856
IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3857
"is out of range [0-%d] %d %d\n", txq_id,
3858
index, txq->q.n_bd, txq->q.write_ptr,
3859
txq->q.read_ptr);
3860
return;
3861
}
3862
3863
#ifdef CONFIG_IWL4965_HT
3864
#ifdef CONFIG_IWL4965_HT_AGG
3865
if (txq->sched_retry) {
3866
const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
3867
struct ieee80211_hdr *hdr =
3868
iwl4965_tx_queue_get_hdr(priv, txq_id, index);
3869
struct iwl4965_ht_agg *agg = NULL;
3870
__le16 *qc = ieee80211_get_qos_ctrl(hdr);
3871
3872
if (qc == NULL) {
3873
IWL_ERROR("BUG_ON qc is null!!!!\n");
3874
return;
3875
}
3876
3877
tid = le16_to_cpu(*qc) & 0xf;
3878
3879
sta_id = iwl4965_get_ra_sta_id(priv, hdr);
3880
if (unlikely(sta_id == IWL_INVALID_STATION)) {
3881
IWL_ERROR("Station not known for\n");
3882
return;
3883
}
3884
3885
agg = &priv->stations[sta_id].tid[tid].agg;
3886
3887
iwl4965_tx_status_reply_tx(priv, agg, tx_resp, index);
3888
3889
if ((tx_resp->frame_count == 1) &&
3890
!iwl4965_is_tx_success(status)) {
3891
/* TODO: send BAR */
3892
}
3893
3894
if ((txq->q.read_ptr != (scd_ssn & 0xff))) {
3895
index = iwl4965_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
3896
IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
3897
"%d index %d\n", scd_ssn , index);
3898
iwl4965_tx_queue_reclaim(priv, txq_id, index);
3899
}
3900
} else {
3901
#endif /* CONFIG_IWL4965_HT_AGG */
3902
#endif /* CONFIG_IWL4965_HT */
3903
tx_status = &(txq->txb[txq->q.read_ptr].status);
3904
3905
tx_status->retry_count = tx_resp->failure_frame;
3906
tx_status->queue_number = status;
3907
tx_status->queue_length = tx_resp->bt_kill_count;
3908
tx_status->queue_length |= tx_resp->failure_rts;
3909
3910
tx_status->flags =
3911
iwl4965_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
3912
3913
tx_status->control.tx_rate =
3914
iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags);
3915
3916
IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
3917
"retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
3918
status, le32_to_cpu(tx_resp->rate_n_flags),
3919
tx_resp->failure_frame);
3920
3921
IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
3922
if (index != -1)
3923
iwl4965_tx_queue_reclaim(priv, txq_id, index);
3924
#ifdef CONFIG_IWL4965_HT
3925
#ifdef CONFIG_IWL4965_HT_AGG
3926
}
3927
#endif /* CONFIG_IWL4965_HT_AGG */
3928
#endif /* CONFIG_IWL4965_HT */
3929
3930
if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
3931
IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n");
3932
}
3933
3934
3935
static void iwl4965_rx_reply_alive(struct iwl4965_priv *priv,
3936
struct iwl4965_rx_mem_buffer *rxb)
3937
{
3938
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3939
struct iwl4965_alive_resp *palive;
3940
struct delayed_work *pwork;
3941
3942
palive = &pkt->u.alive_frame;
3943
3944
IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3945
"0x%01X 0x%01X\n",
3946
palive->is_valid, palive->ver_type,
3947
palive->ver_subtype);
3948
3949
if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3950
IWL_DEBUG_INFO("Initialization Alive received.\n");
3951
memcpy(&priv->card_alive_init,
3952
&pkt->u.alive_frame,
3953
sizeof(struct iwl4965_init_alive_resp));
3954
pwork = &priv->init_alive_start;
3955
} else {
3956
IWL_DEBUG_INFO("Runtime Alive received.\n");
3957
memcpy(&priv->card_alive, &pkt->u.alive_frame,
3958
sizeof(struct iwl4965_alive_resp));
3959
pwork = &priv->alive_start;
3960
}
3961
3962
/* We delay the ALIVE response by 5ms to
3963
* give the HW RF Kill time to activate... */
3964
if (palive->is_valid == UCODE_VALID_OK)
3965
queue_delayed_work(priv->workqueue, pwork,
3966
msecs_to_jiffies(5));
3967
else
3968
IWL_WARNING("uCode did not respond OK.\n");
3969
}
3970
3971
static void iwl4965_rx_reply_add_sta(struct iwl4965_priv *priv,
3972
struct iwl4965_rx_mem_buffer *rxb)
3973
{
3974
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3975
3976
IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3977
return;
3978
}
3979
3980
static void iwl4965_rx_reply_error(struct iwl4965_priv *priv,
3981
struct iwl4965_rx_mem_buffer *rxb)
3982
{
3983
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3984
3985
IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3986
"seq 0x%04X ser 0x%08X\n",
3987
le32_to_cpu(pkt->u.err_resp.error_type),
3988
get_cmd_string(pkt->u.err_resp.cmd_id),
3989
pkt->u.err_resp.cmd_id,
3990
le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3991
le32_to_cpu(pkt->u.err_resp.error_info));
3992
}
3993
3994
#define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3995
3996
static void iwl4965_rx_csa(struct iwl4965_priv *priv, struct iwl4965_rx_mem_buffer *rxb)
3997
{
3998
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3999
struct iwl4965_rxon_cmd *rxon = (void *)&priv->active_rxon;
4000
struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
4001
IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
4002
le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
4003
rxon->channel = csa->channel;
4004
priv->staging_rxon.channel = csa->channel;
4005
}
4006
4007
static void iwl4965_rx_spectrum_measure_notif(struct iwl4965_priv *priv,
4008
struct iwl4965_rx_mem_buffer *rxb)
4009
{
4010
#ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
4011
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4012
struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
4013
4014
if (!report->state) {
4015
IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
4016
"Spectrum Measure Notification: Start\n");
4017
return;
4018
}
4019
4020
memcpy(&priv->measure_report, report, sizeof(*report));
4021
priv->measurement_status |= MEASUREMENT_READY;
4022
#endif
4023
}
4024
4025
static void iwl4965_rx_pm_sleep_notif(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_sleep_notification *sleep = &(pkt->u.sleep_notif);
4031
IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
4032
sleep->pm_sleep_mode, sleep->pm_wakeup_src);
4033
#endif
4034
}
4035
4036
static void iwl4965_rx_pm_debug_statistics_notif(struct iwl4965_priv *priv,
4037
struct iwl4965_rx_mem_buffer *rxb)
4038
{
4039
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4040
IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
4041
"notification for %s:\n",
4042
le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
4043
iwl4965_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
4044
}
4045
4046
static void iwl4965_bg_beacon_update(struct work_struct *work)
4047
{
4048
struct iwl4965_priv *priv =
4049
container_of(work, struct iwl4965_priv, beacon_update);
4050
struct sk_buff *beacon;
4051
4052
/* Pull updated AP beacon from mac80211. will fail if not in AP mode */
4053
beacon = iwlwifi_ieee80211_beacon_get(priv->hw, priv->interface_id, NULL);
4054
4055
if (!beacon) {
4056
IWL_ERROR("update beacon failed\n");
4057
return;
4058
}
4059
4060
mutex_lock(&priv->mutex);
4061
/* new beacon skb is allocated every time; dispose previous.*/
4062
if (priv->ibss_beacon)
4063
dev_kfree_skb(priv->ibss_beacon);
4064
4065
priv->ibss_beacon = beacon;
4066
mutex_unlock(&priv->mutex);
4067
4068
iwl4965_send_beacon_cmd(priv);
4069
}
4070
4071
static void iwl4965_rx_beacon_notif(struct iwl4965_priv *priv,
4072
struct iwl4965_rx_mem_buffer *rxb)
4073
{
4074
#ifdef CONFIG_IWL4965_DEBUG
4075
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4076
struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
4077
u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
4078
4079
IWL_DEBUG_RX("beacon status %x retries %d iss %d "
4080
"tsf %d %d rate %d\n",
4081
le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
4082
beacon->beacon_notify_hdr.failure_frame,
4083
le32_to_cpu(beacon->ibss_mgr_status),
4084
le32_to_cpu(beacon->high_tsf),
4085
le32_to_cpu(beacon->low_tsf), rate);
4086
#endif
4087
4088
if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
4089
(!test_bit(STATUS_EXIT_PENDING, &priv->status)))
4090
queue_work(priv->workqueue, &priv->beacon_update);
4091
}
4092
4093
/* Service response to REPLY_SCAN_CMD (0x80) */
4094
static void iwl4965_rx_reply_scan(struct iwl4965_priv *priv,
4095
struct iwl4965_rx_mem_buffer *rxb)
4096
{
4097
#ifdef CONFIG_IWL4965_DEBUG
4098
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4099
struct iwl4965_scanreq_notification *notif =
4100
(struct iwl4965_scanreq_notification *)pkt->u.raw;
4101
4102
IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
4103
#endif
4104
}
4105
4106
/* Service SCAN_START_NOTIFICATION (0x82) */
4107
static void iwl4965_rx_scan_start_notif(struct iwl4965_priv *priv,
4108
struct iwl4965_rx_mem_buffer *rxb)
4109
{
4110
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4111
struct iwl4965_scanstart_notification *notif =
4112
(struct iwl4965_scanstart_notification *)pkt->u.raw;
4113
priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
4114
IWL_DEBUG_SCAN("Scan start: "
4115
"%d [802.11%s] "
4116
"(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
4117
notif->channel,
4118
notif->band ? "bg" : "a",
4119
notif->tsf_high,
4120
notif->tsf_low, notif->status, notif->beacon_timer);
4121
}
4122
4123
/* Service SCAN_RESULTS_NOTIFICATION (0x83) */
4124
static void iwl4965_rx_scan_results_notif(struct iwl4965_priv *priv,
4125
struct iwl4965_rx_mem_buffer *rxb)
4126
{
4127
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4128
struct iwl4965_scanresults_notification *notif =
4129
(struct iwl4965_scanresults_notification *)pkt->u.raw;
4130
4131
IWL_DEBUG_SCAN("Scan ch.res: "
4132
"%d [802.11%s] "
4133
"(TSF: 0x%08X:%08X) - %d "
4134
"elapsed=%lu usec (%dms since last)\n",
4135
notif->channel,
4136
notif->band ? "bg" : "a",
4137
le32_to_cpu(notif->tsf_high),
4138
le32_to_cpu(notif->tsf_low),
4139
le32_to_cpu(notif->statistics[0]),
4140
le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
4141
jiffies_to_msecs(elapsed_jiffies
4142
(priv->last_scan_jiffies, jiffies)));
4143
4144
priv->last_scan_jiffies = jiffies;
4145
priv->next_scan_jiffies = 0;
4146
}
4147
4148
/* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
4149
static void iwl4965_rx_scan_complete_notif(struct iwl4965_priv *priv,
4150
struct iwl4965_rx_mem_buffer *rxb)
4151
{
4152
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4153
struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
4154
4155
IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
4156
scan_notif->scanned_channels,
4157
scan_notif->tsf_low,
4158
scan_notif->tsf_high, scan_notif->status);
4159
4160
/* The HW is no longer scanning */
4161
clear_bit(STATUS_SCAN_HW, &priv->status);
4162
4163
/* The scan completion notification came in, so kill that timer... */
4164
cancel_delayed_work(&priv->scan_check);
4165
4166
IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
4167
(priv->scan_bands == 2) ? "2.4" : "5.2",
4168
jiffies_to_msecs(elapsed_jiffies
4169
(priv->scan_pass_start, jiffies)));
4170
4171
/* Remove this scanned band from the list
4172
* of pending bands to scan */
4173
priv->scan_bands--;
4174
4175
/* If a request to abort was given, or the scan did not succeed
4176
* then we reset the scan state machine and terminate,
4177
* re-queuing another scan if one has been requested */
4178
if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
4179
IWL_DEBUG_INFO("Aborted scan completed.\n");
4180
clear_bit(STATUS_SCAN_ABORTING, &priv->status);
4181
} else {
4182
/* If there are more bands on this scan pass reschedule */
4183
if (priv->scan_bands > 0)
4184
goto reschedule;
4185
}
4186
4187
priv->last_scan_jiffies = jiffies;
4188
priv->next_scan_jiffies = 0;
4189
IWL_DEBUG_INFO("Setting scan to off\n");
4190
4191
clear_bit(STATUS_SCANNING, &priv->status);
4192
4193
IWL_DEBUG_INFO("Scan took %dms\n",
4194
jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
4195
4196
queue_work(priv->workqueue, &priv->scan_completed);
4197
4198
return;
4199
4200
reschedule:
4201
priv->scan_pass_start = jiffies;
4202
queue_work(priv->workqueue, &priv->request_scan);
4203
}
4204
4205
/* Handle notification from uCode that card's power state is changing
4206
* due to software, hardware, or critical temperature RFKILL */
4207
static void iwl4965_rx_card_state_notif(struct iwl4965_priv *priv,
4208
struct iwl4965_rx_mem_buffer *rxb)
4209
{
4210
struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4211
u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
4212
unsigned long status = priv->status;
4213
4214
IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
4215
(flags & HW_CARD_DISABLED) ? "Kill" : "On",
4216
(flags & SW_CARD_DISABLED) ? "Kill" : "On");
4217
4218
if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
4219
RF_CARD_DISABLED)) {
4220
4221
iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
4222
CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
4223
4224
if (!iwl4965_grab_nic_access(priv)) {
4225
iwl4965_write_direct32(
4226
priv, HBUS_TARG_MBX_C,
4227
HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
4228
4229
iwl4965_release_nic_access(priv);
4230
}
4231
4232
if (!(flags & RXON_CARD_DISABLED)) {
4233
iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
4234
CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
4235
if (!iwl4965_grab_nic_access(priv)) {
4236
iwl4965_write_direct32(
4237
priv, HBUS_TARG_MBX_C,
4238
HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
4239
4240
iwl4965_release_nic_access(priv);
4241
}
4242
}
4243
4244
if (flags & RF_CARD_DISABLED) {
4245
iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
4246
CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
4247
iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4248
if (!iwl4965_grab_nic_access(priv))
4249
iwl4965_release_nic_access(priv);
4250
}
4251
}
4252
4253
if (flags & HW_CARD_DISABLED)
4254
set_bit(STATUS_RF_KILL_HW, &priv->status);
4255
else
4256
clear_bit(STATUS_RF_KILL_HW, &priv->status);
4257
4258
4259
if (flags & SW_CARD_DISABLED)
4260
set_bit(STATUS_RF_KILL_SW, &priv->status);
4261
else
4262
clear_bit(STATUS_RF_KILL_SW, &priv->status);
4263
4264
if (!(flags & RXON_CARD_DISABLED))
4265
iwl4965_scan_cancel(priv);
4266
4267
if ((test_bit(STATUS_RF_KILL_HW, &status) !=
4268
test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
4269
(test_bit(STATUS_RF_KILL_SW, &status) !=
4270
test_bit(STATUS_RF_KILL_SW, &priv->status)))
4271
queue_work(priv->workqueue, &priv->rf_kill);
4272
else
4273
wake_up_interruptible(&priv->wait_command_queue);
4274
}
4275
4276
/**
4277
* iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
4278
*
4279
* Setup the RX handlers for each of the reply types sent from the uCode
4280
* to the host.
4281
*
4282
* This function chains into the hardware specific files for them to setup
4283
* any hardware specific handlers as well.
4284
*/
4285
static void iwl4965_setup_rx_handlers(struct iwl4965_priv *priv)
4286
{
4287
priv->rx_handlers[REPLY_ALIVE] = iwl4965_rx_reply_alive;
4288
priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta;
4289
priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
4290
priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
4291
priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
4292
iwl4965_rx_spectrum_measure_notif;
4293
priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
4294
priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
4295
iwl4965_rx_pm_debug_statistics_notif;
4296
priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
4297
4298
/*
4299
* The same handler is used for both the REPLY to a discrete
4300
* statistics request from the host as well as for the periodic
4301
* statistics notifications (after received beacons) from the uCode.
4302
*/
4303
priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
4304
priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
4305
4306
priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
4307
priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
4308
priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
4309
iwl4965_rx_scan_results_notif;
4310
priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
4311
iwl4965_rx_scan_complete_notif;
4312
priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
4313
priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
4314
4315
/* Set up hardware specific Rx handlers */
4316
iwl4965_hw_rx_handler_setup(priv);
4317
}
4318
4319
/**
4320
* iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
4321
* @rxb: Rx buffer to reclaim
4322
*
4323
* If an Rx buffer has an async callback associated with it the callback
4324
* will be executed. The attached skb (if present) will only be freed
4325
* if the callback returns 1
4326
*/
4327
static void iwl4965_tx_cmd_complete(struct iwl4965_priv *priv,
4328
struct iwl4965_rx_mem_buffer *rxb)
4329
{
4330
struct iwl4965_rx_packet *pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
4331
u16 sequence = le16_to_cpu(pkt->hdr.sequence);
4332
int txq_id = SEQ_TO_QUEUE(sequence);
4333
int index = SEQ_TO_INDEX(sequence);
4334
int huge = sequence & SEQ_HUGE_FRAME;
4335
int cmd_index;
4336
struct iwl4965_cmd *cmd;
4337
4338
/* If a Tx command is being handled and it isn't in the actual
4339
* command queue then there a command routing bug has been introduced
4340
* in the queue management code. */
4341
if (txq_id != IWL_CMD_QUEUE_NUM)
4342
IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
4343
txq_id, pkt->hdr.cmd);
4344
BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
4345
4346
cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
4347
cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
4348
4349
/* Input error checking is done when commands are added to queue. */
4350
if (cmd->meta.flags & CMD_WANT_SKB) {
4351
cmd->meta.source->u.skb = rxb->skb;
4352
rxb->skb = NULL;
4353
} else if (cmd->meta.u.callback &&
4354
!cmd->meta.u.callback(priv, cmd, rxb->skb))
4355
rxb->skb = NULL;
4356
4357
iwl4965_tx_queue_reclaim(priv, txq_id, index);
4358
4359
if (!(cmd->meta.flags & CMD_ASYNC)) {
4360
clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4361
wake_up_interruptible(&priv->wait_command_queue);
4362
}
4363
}
4364
4365
/************************** RX-FUNCTIONS ****************************/
4366
/*
4367
* Rx theory of operation
4368
*
4369
* Driver allocates a circular buffer of Receive Buffer Descriptors (RBDs),
4370
* each of which point to Receive Buffers to be filled by 4965. These get
4371
* used not only for Rx frames, but for any command response or notification
4372
* from the 4965. The driver and 4965 manage the Rx buffers by means
4373
* of indexes into the circular buffer.
4374
*
4375
* Rx Queue Indexes
4376
* The host/firmware share two index registers for managing the Rx buffers.
4377
*
4378
* The READ index maps to the first position that the firmware may be writing
4379
* to -- the driver can read up to (but not including) this position and get
4380
* good data.
4381
* The READ index is managed by the firmware once the card is enabled.
4382
*
4383
* The WRITE index maps to the last position the driver has read from -- the
4384
* position preceding WRITE is the last slot the firmware can place a packet.
4385
*
4386
* The queue is empty (no good data) if WRITE = READ - 1, and is full if
4387
* WRITE = READ.
4388
*
4389
* During initialization, the host sets up the READ queue position to the first
4390
* INDEX position, and WRITE to the last (READ - 1 wrapped)
4391
*
4392
* When the firmware places a packet in a buffer, it will advance the READ index
4393
* and fire the RX interrupt. The driver can then query the READ index and
4394
* process as many packets as possible, moving the WRITE index forward as it
4395
* resets the Rx queue buffers with new memory.
4396
*
4397
* The management in the driver is as follows:
4398
* + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
4399
* iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
4400
* to replenish the iwl->rxq->rx_free.
4401
* + In iwl4965_rx_replenish (scheduled) if 'processed' != 'read' then the
4402
* iwl->rxq is replenished and the READ INDEX is updated (updating the
4403
* 'processed' and 'read' driver indexes as well)
4404
* + A received packet is processed and handed to the kernel network stack,
4405
* detached from the iwl->rxq. The driver 'processed' index is updated.
4406
* + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
4407
* list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
4408
* INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
4409
* were enough free buffers and RX_STALLED is set it is cleared.
4410
*
4411
*
4412
* Driver sequence:
4413
*
4414
* iwl4965_rx_queue_alloc() Allocates rx_free
4415
* iwl4965_rx_replenish() Replenishes rx_free list from rx_used, and calls
4416
* iwl4965_rx_queue_restock
4417
* iwl4965_rx_queue_restock() Moves available buffers from rx_free into Rx
4418
* queue, updates firmware pointers, and updates
4419
* the WRITE index. If insufficient rx_free buffers
4420
* are available, schedules iwl4965_rx_replenish
4421
*
4422
* -- enable interrupts --
4423
* ISR - iwl4965_rx() Detach iwl4965_rx_mem_buffers from pool up to the
4424
* READ INDEX, detaching the SKB from the pool.
4425
* Moves the packet buffer from queue to rx_used.
4426
* Calls iwl4965_rx_queue_restock to refill any empty
4427
* slots.
4428
* ...
4429
*
4430
*/
4431
4432
/**
4433
* iwl4965_rx_queue_space - Return number of free slots available in queue.
4434
*/
4435
static int iwl4965_rx_queue_space(const struct iwl4965_rx_queue *q)
4436
{
4437
int s = q->read - q->write;
4438
if (s <= 0)
4439
s += RX_QUEUE_SIZE;
4440
/* keep some buffer to not confuse full and empty queue */
4441
s -= 2;
4442
if (s < 0)
4443
s = 0;
4444
return s;
4445
}
4446
4447
/**
4448
* iwl4965_rx_queue_update_write_ptr - Update the write pointer for the RX queue
4449
*/
4450
int iwl4965_rx_queue_update_write_ptr(struct iwl4965_priv *priv, struct iwl4965_rx_queue *q)
4451
{
4452
u32 reg = 0;
4453
int rc = 0;
4454
unsigned long flags;
4455
4456
spin_lock_irqsave(&q->lock, flags);
4457
4458
if (q->need_update == 0)
4459
goto exit_unlock;
4460
4461
/* If power-saving is in use, make sure device is awake */
4462
if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4463
reg = iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4464
4465
if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4466
iwl4965_set_bit(priv, CSR_GP_CNTRL,
4467
CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4468
goto exit_unlock;
4469
}
4470
4471
rc = iwl4965_grab_nic_access(priv);
4472
if (rc)
4473
goto exit_unlock;
4474
4475
/* Device expects a multiple of 8 */
4476
iwl4965_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
4477
q->write & ~0x7);
4478
iwl4965_release_nic_access(priv);
4479
4480
/* Else device is assumed to be awake */
4481
} else
4482
/* Device expects a multiple of 8 */
4483
iwl4965_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
4484
4485
4486
q->need_update = 0;
4487
4488
exit_unlock:
4489
spin_unlock_irqrestore(&q->lock, flags);
4490
return rc;
4491
}
4492
4493
/**
4494
* iwl4965_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
4495
*/
4496
static inline __le32 iwl4965_dma_addr2rbd_ptr(struct iwl4965_priv *priv,
4497
dma_addr_t dma_addr)
4498
{
4499
return cpu_to_le32((u32)(dma_addr >> 8));
4500
}
4501
4502
4503
/**
4504
* iwl4965_rx_queue_restock - refill RX queue from pre-allocated pool
4505
*
4506
* If there are slots in the RX queue that need to be restocked,
4507
* and we have free pre-allocated buffers, fill the ranks as much
4508
* as we can, pulling from rx_free.
4509
*
4510
* This moves the 'write' index forward to catch up with 'processed', and
4511
* also updates the memory address in the firmware to reference the new
4512
* target buffer.
4513
*/
4514
static int iwl4965_rx_queue_restock(struct iwl4965_priv *priv)
4515
{
4516
struct iwl4965_rx_queue *rxq = &priv->rxq;
4517
struct list_head *element;
4518
struct iwl4965_rx_mem_buffer *rxb;
4519
unsigned long flags;
4520
int write, rc;
4521
4522
spin_lock_irqsave(&rxq->lock, flags);
4523
write = rxq->write & ~0x7;
4524
while ((iwl4965_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
4525
/* Get next free Rx buffer, remove from free list */
4526
element = rxq->rx_free.next;
4527
rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
4528
list_del(element);
4529
4530
/* Point to Rx buffer via next RBD in circular buffer */
4531
rxq->bd[rxq->write] = iwl4965_dma_addr2rbd_ptr(priv, rxb->dma_addr);
4532
rxq->queue[rxq->write] = rxb;
4533
rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
4534
rxq->free_count--;
4535
}
4536
spin_unlock_irqrestore(&rxq->lock, flags);
4537
/* If the pre-allocated buffer pool is dropping low, schedule to
4538
* refill it */
4539
if (rxq->free_count <= RX_LOW_WATERMARK)
4540
queue_work(priv->workqueue, &priv->rx_replenish);
4541
4542
4543
/* If we've added more space for the firmware to place data, tell it.
4544
* Increment device's write pointer in multiples of 8. */
4545
if ((write != (rxq->write & ~0x7))
4546
|| (abs(rxq->write - rxq->read) > 7)) {
4547
spin_lock_irqsave(&rxq->lock, flags);
4548
rxq->need_update = 1;
4549
spin_unlock_irqrestore(&rxq->lock, flags);
4550
rc = iwl4965_rx_queue_update_write_ptr(priv, rxq);
4551
if (rc)
4552
return rc;
4553
}
4554
4555
return 0;
4556
}
4557
4558
/**
4559
* iwl4965_rx_replenish - Move all used packet from rx_used to rx_free
4560
*
4561
* When moving to rx_free an SKB is allocated for the slot.
4562
*
4563
* Also restock the Rx queue via iwl4965_rx_queue_restock.
4564
* This is called as a scheduled work item (except for during initialization)
4565
*/
4566
static void iwl4965_rx_allocate(struct iwl4965_priv *priv)
4567
{
4568
struct iwl4965_rx_queue *rxq = &priv->rxq;
4569
struct list_head *element;
4570
struct iwl4965_rx_mem_buffer *rxb;
4571
unsigned long flags;
4572
spin_lock_irqsave(&rxq->lock, flags);
4573
while (!list_empty(&rxq->rx_used)) {
4574
element = rxq->rx_used.next;
4575
rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
4576
4577
/* Alloc a new receive buffer */
4578
rxb->skb =
4579
alloc_skb(IWL_RX_BUF_SIZE, __GFP_NOWARN | GFP_ATOMIC);
4580
if (!rxb->skb) {
4581
if (net_ratelimit())
4582
printk(KERN_CRIT DRV_NAME
4583
": Can not allocate SKB buffers\n");
4584
/* We don't reschedule replenish work here -- we will
4585
* call the restock method and if it still needs
4586
* more buffers it will schedule replenish */
4587
break;
4588
}
4589
priv->alloc_rxb_skb++;
4590
list_del(element);
4591
4592
/* Get physical address of RB/SKB */
4593
rxb->dma_addr =
4594
pci_map_single(priv->pci_dev, rxb->skb->data,
4595
IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4596
list_add_tail(&rxb->list, &rxq->rx_free);
4597
rxq->free_count++;
4598
}
4599
spin_unlock_irqrestore(&rxq->lock, flags);
4600
}
4601
4602
/*
4603
* this should be called while priv->lock is locked
4604
*/
4605
static void __iwl4965_rx_replenish(void *data)
4606
{
4607
struct iwl4965_priv *priv = data;
4608
4609
iwl4965_rx_allocate(priv);
4610
iwl4965_rx_queue_restock(priv);
4611
}
4612
4613
4614
void iwl4965_rx_replenish(void *data)
4615
{
4616
struct iwl4965_priv *priv = data;
4617
unsigned long flags;
4618
4619
iwl4965_rx_allocate(priv);
4620
4621
spin_lock_irqsave(&priv->lock, flags);
4622
iwl4965_rx_queue_restock(priv);
4623
spin_unlock_irqrestore(&priv->lock, flags);
4624
}
4625
4626
/* Assumes that the skb field of the buffers in 'pool' is kept accurate.
4627
* If an SKB has been detached, the POOL needs to have its SKB set to NULL
4628
* This free routine walks the list of POOL entries and if SKB is set to
4629
* non NULL it is unmapped and freed
4630
*/
4631
static void iwl4965_rx_queue_free(struct iwl4965_priv *priv, struct iwl4965_rx_queue *rxq)
4632
{
4633
int i;
4634
for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
4635
if (rxq->pool[i].skb != NULL) {
4636
pci_unmap_single(priv->pci_dev,
4637
rxq->pool[i].dma_addr,
4638
IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4639
dev_kfree_skb(rxq->pool[i].skb);
4640
}
4641
}
4642
4643
pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
4644
rxq->dma_addr);
4645
rxq->bd = NULL;
4646
}
4647
4648
int iwl4965_rx_queue_alloc(struct iwl4965_priv *priv)
4649
{
4650
struct iwl4965_rx_queue *rxq = &priv->rxq;
4651
struct pci_dev *dev = priv->pci_dev;
4652
int i;
4653
4654
spin_lock_init(&rxq->lock);
4655
INIT_LIST_HEAD(&rxq->rx_free);
4656
INIT_LIST_HEAD(&rxq->rx_used);
4657
4658
/* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
4659
rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
4660
if (!rxq->bd)
4661
return -ENOMEM;
4662
4663
/* Fill the rx_used queue with _all_ of the Rx buffers */
4664
for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
4665
list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4666
4667
/* Set us so that we have processed and used all buffers, but have
4668
* not restocked the Rx queue with fresh buffers */
4669
rxq->read = rxq->write = 0;
4670
rxq->free_count = 0;
4671
rxq->need_update = 0;
4672
return 0;
4673
}
4674
4675
void iwl4965_rx_queue_reset(struct iwl4965_priv *priv, struct iwl4965_rx_queue *rxq)
4676
{
4677
unsigned long flags;
4678
int i;
4679
spin_lock_irqsave(&rxq->lock, flags);
4680
INIT_LIST_HEAD(&rxq->rx_free);
4681
INIT_LIST_HEAD(&rxq->rx_used);
4682
/* Fill the rx_used queue with _all_ of the Rx buffers */
4683
for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
4684
/* In the reset function, these buffers may have been allocated
4685
* to an SKB, so we need to unmap and free potential storage */
4686
if (rxq->pool[i].skb != NULL) {
4687
pci_unmap_single(priv->pci_dev,
4688
rxq->pool[i].dma_addr,
4689
IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4690
priv->alloc_rxb_skb--;
4691
dev_kfree_skb(rxq->pool[i].skb);
4692
rxq->pool[i].skb = NULL;
4693
}
4694
list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4695
}
4696
4697
/* Set us so that we have processed and used all buffers, but have
4698
* not restocked the Rx queue with fresh buffers */
4699
rxq->read = rxq->write = 0;
4700
rxq->free_count = 0;
4701
spin_unlock_irqrestore(&rxq->lock, flags);
4702
}
4703
4704
/* Convert linear signal-to-noise ratio into dB */
4705
static u8 ratio2dB[100] = {
4706
/* 0 1 2 3 4 5 6 7 8 9 */
4707
0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
4708
20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
4709
26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
4710
29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
4711
32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
4712
34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
4713
36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
4714
37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
4715
38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
4716
39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
4717
};
4718
4719
/* Calculates a relative dB value from a ratio of linear
4720
* (i.e. not dB) signal levels.
4721
* Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4722
int iwl4965_calc_db_from_ratio(int sig_ratio)
4723
{
4724
/* 1000:1 or higher just report as 60 dB */
4725
if (sig_ratio >= 1000)
4726
return 60;
4727
4728
/* 100:1 or higher, divide by 10 and use table,
4729
* add 20 dB to make up for divide by 10 */
4730
if (sig_ratio >= 100)
4731
return (20 + (int)ratio2dB[sig_ratio/10]);
4732
4733
/* We shouldn't see this */
4734
if (sig_ratio < 1)
4735
return 0;
4736
4737
/* Use table for ratios 1:1 - 99:1 */
4738
return (int)ratio2dB[sig_ratio];
4739
}
4740
4741
#define PERFECT_RSSI (-20) /* dBm */
4742
#define WORST_RSSI (-95) /* dBm */
4743
#define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4744
4745
/* Calculate an indication of rx signal quality (a percentage, not dBm!).
4746
* See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4747
* about formulas used below. */
4748
int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
4749
{
4750
int sig_qual;
4751
int degradation = PERFECT_RSSI - rssi_dbm;
4752
4753
/* If we get a noise measurement, use signal-to-noise ratio (SNR)
4754
* as indicator; formula is (signal dbm - noise dbm).
4755
* SNR at or above 40 is a great signal (100%).
4756
* Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4757
* Weakest usable signal is usually 10 - 15 dB SNR. */
4758
if (noise_dbm) {
4759
if (rssi_dbm - noise_dbm >= 40)
4760
return 100;
4761
else if (rssi_dbm < noise_dbm)
4762
return 0;
4763
sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
4764
4765
/* Else use just the signal level.
4766
* This formula is a least squares fit of data points collected and
4767
* compared with a reference system that had a percentage (%) display
4768
* for signal quality. */
4769
} else
4770
sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
4771
(15 * RSSI_RANGE + 62 * degradation)) /
4772
(RSSI_RANGE * RSSI_RANGE);
4773
4774
if (sig_qual > 100)
4775
sig_qual = 100;
4776
else if (sig_qual < 1)
4777
sig_qual = 0;
4778
4779
return sig_qual;
4780
}
4781
4782
/**
4783
* iwl4965_rx_handle - Main entry function for receiving responses from uCode
4784
*
4785
* Uses the priv->rx_handlers callback function array to invoke
4786
* the appropriate handlers, including command responses,
4787
* frame-received notifications, and other notifications.
4788
*/
4789
static void iwl4965_rx_handle(struct iwl4965_priv *priv)
4790
{
4791
struct iwl4965_rx_mem_buffer *rxb;
4792
struct iwl4965_rx_packet *pkt;
4793
struct iwl4965_rx_queue *rxq = &priv->rxq;
4794
u32 r, i;
4795
int reclaim;
4796
unsigned long flags;
4797
u8 fill_rx = 0;
4798
u32 count = 0;
4799
4800
/* uCode's read index (stored in shared DRAM) indicates the last Rx
4801
* buffer that the driver may process (last buffer filled by ucode). */
4802
r = iwl4965_hw_get_rx_read(priv);
4803
i = rxq->read;
4804
4805
/* Rx interrupt, but nothing sent from uCode */
4806
if (i == r)
4807
IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
4808
4809
if (iwl4965_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
4810
fill_rx = 1;
4811
4812
while (i != r) {
4813
rxb = rxq->queue[i];
4814
4815
/* If an RXB doesn't have a Rx queue slot associated with it,
4816
* then a bug has been introduced in the queue refilling
4817
* routines -- catch it here */
4818
BUG_ON(rxb == NULL);
4819
4820
rxq->queue[i] = NULL;
4821
4822
pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
4823
IWL_RX_BUF_SIZE,
4824
PCI_DMA_FROMDEVICE);
4825
pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
4826
4827
/* Reclaim a command buffer only if this packet is a response
4828
* to a (driver-originated) command.
4829
* If the packet (e.g. Rx frame) originated from uCode,
4830
* there is no command buffer to reclaim.
4831
* Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4832
* but apparently a few don't get set; catch them here. */
4833
reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
4834
(pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
4835
(pkt->hdr.cmd != REPLY_4965_RX) &&
4836
(pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
4837
(pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
4838
(pkt->hdr.cmd != REPLY_TX);
4839
4840
/* Based on type of command response or notification,
4841
* handle those that need handling via function in
4842
* rx_handlers table. See iwl4965_setup_rx_handlers() */
4843
if (priv->rx_handlers[pkt->hdr.cmd]) {
4844
IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4845
"r = %d, i = %d, %s, 0x%02x\n", r, i,
4846
get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
4847
priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
4848
} else {
4849
/* No handling needed */
4850
IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4851
"r %d i %d No handler needed for %s, 0x%02x\n",
4852
r, i, get_cmd_string(pkt->hdr.cmd),
4853
pkt->hdr.cmd);
4854
}
4855
4856
if (reclaim) {
4857
/* Invoke any callbacks, transfer the skb to caller, and
4858
* fire off the (possibly) blocking iwl4965_send_cmd()
4859
* as we reclaim the driver command queue */
4860
if (rxb && rxb->skb)
4861
iwl4965_tx_cmd_complete(priv, rxb);
4862
else
4863
IWL_WARNING("Claim null rxb?\n");
4864
}
4865
4866
/* For now we just don't re-use anything. We can tweak this
4867
* later to try and re-use notification packets and SKBs that
4868
* fail to Rx correctly */
4869
if (rxb->skb != NULL) {
4870
priv->alloc_rxb_skb--;
4871
dev_kfree_skb_any(rxb->skb);
4872
rxb->skb = NULL;
4873
}
4874
4875
pci_unmap_single(priv->pci_dev, rxb->dma_addr,
4876
IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4877
spin_lock_irqsave(&rxq->lock, flags);
4878
list_add_tail(&rxb->list, &priv->rxq.rx_used);
4879
spin_unlock_irqrestore(&rxq->lock, flags);
4880
i = (i + 1) & RX_QUEUE_MASK;
4881
/* If there are a lot of unused frames,
4882
* restock the Rx queue so ucode wont assert. */
4883
if (fill_rx) {
4884
count++;
4885
if (count >= 8) {
4886
priv->rxq.read = i;
4887
__iwl4965_rx_replenish(priv);
4888
count = 0;
4889
}
4890
}
4891
}
4892
4893
/* Backtrack one entry */
4894
priv->rxq.read = i;
4895
iwl4965_rx_queue_restock(priv);
4896
}
4897
4898
/**
4899
* iwl4965_tx_queue_update_write_ptr - Send new write index to hardware
4900
*/
4901
static int iwl4965_tx_queue_update_write_ptr(struct iwl4965_priv *priv,
4902
struct iwl4965_tx_queue *txq)
4903
{
4904
u32 reg = 0;
4905
int rc = 0;
4906
int txq_id = txq->q.id;
4907
4908
if (txq->need_update == 0)
4909
return rc;
4910
4911
/* if we're trying to save power */
4912
if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4913
/* wake up nic if it's powered down ...
4914
* uCode will wake up, and interrupt us again, so next
4915
* time we'll skip this part. */
4916
reg = iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4917
4918
if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4919
IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4920
iwl4965_set_bit(priv, CSR_GP_CNTRL,
4921
CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4922
return rc;
4923
}
4924
4925
/* restore this queue's parameters in nic hardware. */
4926
rc = iwl4965_grab_nic_access(priv);
4927
if (rc)
4928
return rc;
4929
iwl4965_write_direct32(priv, HBUS_TARG_WRPTR,
4930
txq->q.write_ptr | (txq_id << 8));
4931
iwl4965_release_nic_access(priv);
4932
4933
/* else not in power-save mode, uCode will never sleep when we're
4934
* trying to tx (during RFKILL, we're not trying to tx). */
4935
} else
4936
iwl4965_write32(priv, HBUS_TARG_WRPTR,
4937
txq->q.write_ptr | (txq_id << 8));
4938
4939
txq->need_update = 0;
4940
4941
return rc;
4942
}
4943
4944
#ifdef CONFIG_IWL4965_DEBUG
4945
static void iwl4965_print_rx_config_cmd(struct iwl4965_rxon_cmd *rxon)
4946
{
4947
IWL_DEBUG_RADIO("RX CONFIG:\n");
4948
iwl4965_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4949
IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4950
IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4951
IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4952
le32_to_cpu(rxon->filter_flags));
4953
IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4954
IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4955
rxon->ofdm_basic_rates);
4956
IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
4957
IWL_DEBUG_RADIO("u8[6] node_addr: " MAC_FMT "\n",
4958
MAC_ARG(rxon->node_addr));
4959
IWL_DEBUG_RADIO("u8[6] bssid_addr: " MAC_FMT "\n",
4960
MAC_ARG(rxon->bssid_addr));
4961
IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4962
}
4963
#endif
4964
4965
static void iwl4965_enable_interrupts(struct iwl4965_priv *priv)
4966
{
4967
IWL_DEBUG_ISR("Enabling interrupts\n");
4968
set_bit(STATUS_INT_ENABLED, &priv->status);
4969
iwl4965_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4970
}
4971
4972
static inline void iwl4965_disable_interrupts(struct iwl4965_priv *priv)
4973
{
4974
clear_bit(STATUS_INT_ENABLED, &priv->status);
4975
4976
/* disable interrupts from uCode/NIC to host */
4977
iwl4965_write32(priv, CSR_INT_MASK, 0x00000000);
4978
4979
/* acknowledge/clear/reset any interrupts still pending
4980
* from uCode or flow handler (Rx/Tx DMA) */
4981
iwl4965_write32(priv, CSR_INT, 0xffffffff);
4982
iwl4965_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4983
IWL_DEBUG_ISR("Disabled interrupts\n");
4984
}
4985
4986
static const char *desc_lookup(int i)
4987
{
4988
switch (i) {
4989
case 1:
4990
return "FAIL";
4991
case 2:
4992
return "BAD_PARAM";
4993
case 3:
4994
return "BAD_CHECKSUM";
4995
case 4:
4996
return "NMI_INTERRUPT";
4997
case 5:
4998
return "SYSASSERT";
4999
case 6:
5000
return "FATAL_ERROR";
5001
}
5002
5003
return "UNKNOWN";
5004
}
5005
5006
#define ERROR_START_OFFSET (1 * sizeof(u32))
5007
#define ERROR_ELEM_SIZE (7 * sizeof(u32))
5008
5009
static void iwl4965_dump_nic_error_log(struct iwl4965_priv *priv)
5010
{
5011
u32 data2, line;
5012
u32 desc, time, count, base, data1;
5013
u32 blink1, blink2, ilink1, ilink2;
5014
int rc;
5015
5016
base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
5017
5018
if (!iwl4965_hw_valid_rtc_data_addr(base)) {
5019
IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
5020
return;
5021
}
5022
5023
rc = iwl4965_grab_nic_access(priv);
5024
if (rc) {
5025
IWL_WARNING("Can not read from adapter at this time.\n");
5026
return;
5027
}
5028
5029
count = iwl4965_read_targ_mem(priv, base);
5030
5031
if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
5032
IWL_ERROR("Start IWL Error Log Dump:\n");
5033
IWL_ERROR("Status: 0x%08lX, Config: %08X count: %d\n",
5034
priv->status, priv->config, count);
5035
}
5036
5037
desc = iwl4965_read_targ_mem(priv, base + 1 * sizeof(u32));
5038
blink1 = iwl4965_read_targ_mem(priv, base + 3 * sizeof(u32));
5039
blink2 = iwl4965_read_targ_mem(priv, base + 4 * sizeof(u32));
5040
ilink1 = iwl4965_read_targ_mem(priv, base + 5 * sizeof(u32));
5041
ilink2 = iwl4965_read_targ_mem(priv, base + 6 * sizeof(u32));
5042
data1 = iwl4965_read_targ_mem(priv, base + 7 * sizeof(u32));
5043
data2 = iwl4965_read_targ_mem(priv, base + 8 * sizeof(u32));
5044
line = iwl4965_read_targ_mem(priv, base + 9 * sizeof(u32));
5045
time = iwl4965_read_targ_mem(priv, base + 11 * sizeof(u32));
5046
5047
IWL_ERROR("Desc Time "
5048
"data1 data2 line\n");
5049
IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
5050
desc_lookup(desc), desc, time, data1, data2, line);
5051
IWL_ERROR("blink1 blink2 ilink1 ilink2\n");
5052
IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
5053
ilink1, ilink2);
5054
5055
iwl4965_release_nic_access(priv);
5056
}
5057
5058
#define EVENT_START_OFFSET (4 * sizeof(u32))
5059
5060
/**
5061
* iwl4965_print_event_log - Dump error event log to syslog
5062
*
5063
* NOTE: Must be called with iwl4965_grab_nic_access() already obtained!
5064
*/
5065
static void iwl4965_print_event_log(struct iwl4965_priv *priv, u32 start_idx,
5066
u32 num_events, u32 mode)
5067
{
5068
u32 i;
5069
u32 base; /* SRAM byte address of event log header */
5070
u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
5071
u32 ptr; /* SRAM byte address of log data */
5072
u32 ev, time, data; /* event log data */
5073
5074
if (num_events == 0)
5075
return;
5076
5077
base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
5078
5079
if (mode == 0)
5080
event_size = 2 * sizeof(u32);
5081
else
5082
event_size = 3 * sizeof(u32);
5083
5084
ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
5085
5086
/* "time" is actually "data" for mode 0 (no timestamp).
5087
* place event id # at far right for easier visual parsing. */
5088
for (i = 0; i < num_events; i++) {
5089
ev = iwl4965_read_targ_mem(priv, ptr);
5090
ptr += sizeof(u32);
5091
time = iwl4965_read_targ_mem(priv, ptr);
5092
ptr += sizeof(u32);
5093
if (mode == 0)
5094
IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
5095
else {
5096
data = iwl4965_read_targ_mem(priv, ptr);
5097
ptr += sizeof(u32);
5098
IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
5099
}
5100
}
5101
}
5102
5103
static void iwl4965_dump_nic_event_log(struct iwl4965_priv *priv)
5104
{
5105
int rc;
5106
u32 base; /* SRAM byte address of event log header */
5107
u32 capacity; /* event log capacity in # entries */
5108
u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
5109
u32 num_wraps; /* # times uCode wrapped to top of log */
5110
u32 next_entry; /* index of next entry to be written by uCode */
5111
u32 size; /* # entries that we'll print */
5112
5113
base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
5114
if (!iwl4965_hw_valid_rtc_data_addr(base)) {
5115
IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
5116
return;
5117
}
5118
5119
rc = iwl4965_grab_nic_access(priv);
5120
if (rc) {
5121
IWL_WARNING("Can not read from adapter at this time.\n");
5122
return;
5123
}
5124
5125
/* event log header */
5126
capacity = iwl4965_read_targ_mem(priv, base);
5127
mode = iwl4965_read_targ_mem(priv, base + (1 * sizeof(u32)));
5128
num_wraps = iwl4965_read_targ_mem(priv, base + (2 * sizeof(u32)));
5129
next_entry = iwl4965_read_targ_mem(priv, base + (3 * sizeof(u32)));
5130
5131
size = num_wraps ? capacity : next_entry;
5132
5133
/* bail out if nothing in log */
5134
if (size == 0) {
5135
IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
5136
iwl4965_release_nic_access(priv);
5137
return;
5138
}
5139
5140
IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
5141
size, num_wraps);
5142
5143
/* if uCode has wrapped back to top of log, start at the oldest entry,
5144
* i.e the next one that uCode would fill. */
5145
if (num_wraps)
5146
iwl4965_print_event_log(priv, next_entry,
5147
capacity - next_entry, mode);
5148
5149
/* (then/else) start at top of log */
5150
iwl4965_print_event_log(priv, 0, next_entry, mode);
5151
5152
iwl4965_release_nic_access(priv);
5153
}
5154
5155
/**
5156
* iwl4965_irq_handle_error - called for HW or SW error interrupt from card
5157
*/
5158
static void iwl4965_irq_handle_error(struct iwl4965_priv *priv)
5159
{
5160
/* Set the FW error flag -- cleared on iwl4965_down */
5161
set_bit(STATUS_FW_ERROR, &priv->status);
5162
5163
/* Cancel currently queued command. */
5164
clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
5165
5166
#ifdef CONFIG_IWL4965_DEBUG
5167
if (iwl4965_debug_level & IWL_DL_FW_ERRORS) {
5168
iwl4965_dump_nic_error_log(priv);
5169
iwl4965_dump_nic_event_log(priv);
5170
iwl4965_print_rx_config_cmd(&priv->staging_rxon);
5171
}
5172
#endif
5173
5174
wake_up_interruptible(&priv->wait_command_queue);
5175
5176
/* Keep the restart process from trying to send host
5177
* commands by clearing the INIT status bit */
5178
clear_bit(STATUS_READY, &priv->status);
5179
5180
if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5181
IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
5182
"Restarting adapter due to uCode error.\n");
5183
5184
if (iwl4965_is_associated(priv)) {
5185
memcpy(&priv->recovery_rxon, &priv->active_rxon,
5186
sizeof(priv->recovery_rxon));
5187
priv->error_recovering = 1;
5188
}
5189
queue_work(priv->workqueue, &priv->restart);
5190
}
5191
}
5192
5193
static void iwl4965_error_recovery(struct iwl4965_priv *priv)
5194
{
5195
unsigned long flags;
5196
5197
memcpy(&priv->staging_rxon, &priv->recovery_rxon,
5198
sizeof(priv->staging_rxon));
5199
priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5200
iwl4965_commit_rxon(priv);
5201
5202
iwl4965_rxon_add_station(priv, priv->bssid, 1);
5203
5204
spin_lock_irqsave(&priv->lock, flags);
5205
priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
5206
priv->error_recovering = 0;
5207
spin_unlock_irqrestore(&priv->lock, flags);
5208
}
5209
5210
static void iwl4965_irq_tasklet(struct iwl4965_priv *priv)
5211
{
5212
u32 inta, handled = 0;
5213
u32 inta_fh;
5214
unsigned long flags;
5215
#ifdef CONFIG_IWL4965_DEBUG
5216
u32 inta_mask;
5217
#endif
5218
5219
spin_lock_irqsave(&priv->lock, flags);
5220
5221
/* Ack/clear/reset pending uCode interrupts.
5222
* Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
5223
* and will clear only when CSR_FH_INT_STATUS gets cleared. */
5224
inta = iwl4965_read32(priv, CSR_INT);
5225
iwl4965_write32(priv, CSR_INT, inta);
5226
5227
/* Ack/clear/reset pending flow-handler (DMA) interrupts.
5228
* Any new interrupts that happen after this, either while we're
5229
* in this tasklet, or later, will show up in next ISR/tasklet. */
5230
inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
5231
iwl4965_write32(priv, CSR_FH_INT_STATUS, inta_fh);
5232
5233
#ifdef CONFIG_IWL4965_DEBUG
5234
if (iwl4965_debug_level & IWL_DL_ISR) {
5235
/* just for debug */
5236
inta_mask = iwl4965_read32(priv, CSR_INT_MASK);
5237
IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5238
inta, inta_mask, inta_fh);
5239
}
5240
#endif
5241
5242
/* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
5243
* atomic, make sure that inta covers all the interrupts that
5244
* we've discovered, even if FH interrupt came in just after
5245
* reading CSR_INT. */
5246
if (inta_fh & CSR_FH_INT_RX_MASK)
5247
inta |= CSR_INT_BIT_FH_RX;
5248
if (inta_fh & CSR_FH_INT_TX_MASK)
5249
inta |= CSR_INT_BIT_FH_TX;
5250
5251
/* Now service all interrupt bits discovered above. */
5252
if (inta & CSR_INT_BIT_HW_ERR) {
5253
IWL_ERROR("Microcode HW error detected. Restarting.\n");
5254
5255
/* Tell the device to stop sending interrupts */
5256
iwl4965_disable_interrupts(priv);
5257
5258
iwl4965_irq_handle_error(priv);
5259
5260
handled |= CSR_INT_BIT_HW_ERR;
5261
5262
spin_unlock_irqrestore(&priv->lock, flags);
5263
5264
return;
5265
}
5266
5267
#ifdef CONFIG_IWL4965_DEBUG
5268
if (iwl4965_debug_level & (IWL_DL_ISR)) {
5269
/* NIC fires this, but we don't use it, redundant with WAKEUP */
5270
if (inta & CSR_INT_BIT_MAC_CLK_ACTV)
5271
IWL_DEBUG_ISR("Microcode started or stopped.\n");
5272
5273
/* Alive notification via Rx interrupt will do the real work */
5274
if (inta & CSR_INT_BIT_ALIVE)
5275
IWL_DEBUG_ISR("Alive interrupt\n");
5276
}
5277
#endif
5278
/* Safely ignore these bits for debug checks below */
5279
inta &= ~(CSR_INT_BIT_MAC_CLK_ACTV | CSR_INT_BIT_ALIVE);
5280
5281
/* HW RF KILL switch toggled */
5282
if (inta & CSR_INT_BIT_RF_KILL) {
5283
int hw_rf_kill = 0;
5284
if (!(iwl4965_read32(priv, CSR_GP_CNTRL) &
5285
CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
5286
hw_rf_kill = 1;
5287
5288
IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
5289
"RF_KILL bit toggled to %s.\n",
5290
hw_rf_kill ? "disable radio":"enable radio");
5291
5292
/* Queue restart only if RF_KILL switch was set to "kill"
5293
* when we loaded driver, and is now set to "enable".
5294
* After we're Alive, RF_KILL gets handled by
5295
* iwl4965_rx_card_state_notif() */
5296
if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
5297
clear_bit(STATUS_RF_KILL_HW, &priv->status);
5298
queue_work(priv->workqueue, &priv->restart);
5299
}
5300
5301
handled |= CSR_INT_BIT_RF_KILL;
5302
}
5303
5304
/* Chip got too hot and stopped itself */
5305
if (inta & CSR_INT_BIT_CT_KILL) {
5306
IWL_ERROR("Microcode CT kill error detected.\n");
5307
handled |= CSR_INT_BIT_CT_KILL;
5308
}
5309
5310
/* Error detected by uCode */
5311
if (inta & CSR_INT_BIT_SW_ERR) {
5312
IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
5313
inta);
5314
iwl4965_irq_handle_error(priv);
5315
handled |= CSR_INT_BIT_SW_ERR;
5316
}
5317
5318
/* uCode wakes up after power-down sleep */
5319
if (inta & CSR_INT_BIT_WAKEUP) {
5320
IWL_DEBUG_ISR("Wakeup interrupt\n");
5321
iwl4965_rx_queue_update_write_ptr(priv, &priv->rxq);
5322
iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[0]);
5323
iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[1]);
5324
iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[2]);
5325
iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[3]);
5326
iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[4]);
5327
iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[5]);
5328
5329
handled |= CSR_INT_BIT_WAKEUP;
5330
}
5331
5332
/* All uCode command responses, including Tx command responses,
5333
* Rx "responses" (frame-received notification), and other
5334
* notifications from uCode come through here*/
5335
if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
5336
iwl4965_rx_handle(priv);
5337
handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
5338
}
5339
5340
if (inta & CSR_INT_BIT_FH_TX) {
5341
IWL_DEBUG_ISR("Tx interrupt\n");
5342
handled |= CSR_INT_BIT_FH_TX;
5343
}
5344
5345
if (inta & ~handled)
5346
IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
5347
5348
if (inta & ~CSR_INI_SET_MASK) {
5349
IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
5350
inta & ~CSR_INI_SET_MASK);
5351
IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
5352
}
5353
5354
/* Re-enable all interrupts */
5355
iwl4965_enable_interrupts(priv);
5356
5357
#ifdef CONFIG_IWL4965_DEBUG
5358
if (iwl4965_debug_level & (IWL_DL_ISR)) {
5359
inta = iwl4965_read32(priv, CSR_INT);
5360
inta_mask = iwl4965_read32(priv, CSR_INT_MASK);
5361
inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
5362
IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
5363
"flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
5364
}
5365
#endif
5366
spin_unlock_irqrestore(&priv->lock, flags);
5367
}
5368
5369
static irqreturn_t iwl4965_isr(int irq, void *data)
5370
{
5371
struct iwl4965_priv *priv = data;
5372
u32 inta, inta_mask;
5373
u32 inta_fh;
5374
if (!priv)
5375
return IRQ_NONE;
5376
5377
spin_lock(&priv->lock);
5378
5379
/* Disable (but don't clear!) interrupts here to avoid
5380
* back-to-back ISRs and sporadic interrupts from our NIC.
5381
* If we have something to service, the tasklet will re-enable ints.
5382
* If we *don't* have something, we'll re-enable before leaving here. */
5383
inta_mask = iwl4965_read32(priv, CSR_INT_MASK); /* just for debug */
5384
iwl4965_write32(priv, CSR_INT_MASK, 0x00000000);
5385
5386
/* Discover which interrupts are active/pending */
5387
inta = iwl4965_read32(priv, CSR_INT);
5388
inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
5389
5390
/* Ignore interrupt if there's nothing in NIC to service.
5391
* This may be due to IRQ shared with another device,
5392
* or due to sporadic interrupts thrown from our NIC. */
5393
if (!inta && !inta_fh) {
5394
IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
5395
goto none;
5396
}
5397
5398
if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
5399
/* Hardware disappeared. It might have already raised
5400
* an interrupt */
5401
IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
5402
goto unplugged;
5403
}
5404
5405
IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5406
inta, inta_mask, inta_fh);
5407
5408
/* iwl4965_irq_tasklet() will service interrupts and re-enable them */
5409
tasklet_schedule(&priv->irq_tasklet);
5410
5411
unplugged:
5412
spin_unlock(&priv->lock);
5413
return IRQ_HANDLED;
5414
5415
none:
5416
/* re-enable interrupts here since we don't have anything to service. */
5417
iwl4965_enable_interrupts(priv);
5418
spin_unlock(&priv->lock);
5419
return IRQ_NONE;
5420
}
5421
5422
/************************** EEPROM BANDS ****************************
5423
*
5424
* The iwl4965_eeprom_band definitions below provide the mapping from the
5425
* EEPROM contents to the specific channel number supported for each
5426
* band.
5427
*
5428
* For example, iwl4965_priv->eeprom.band_3_channels[4] from the band_3
5429
* definition below maps to physical channel 42 in the 5.2GHz spectrum.
5430
* The specific geography and calibration information for that channel
5431
* is contained in the eeprom map itself.
5432
*
5433
* During init, we copy the eeprom information and channel map
5434
* information into priv->channel_info_24/52 and priv->channel_map_24/52
5435
*
5436
* channel_map_24/52 provides the index in the channel_info array for a
5437
* given channel. We have to have two separate maps as there is channel
5438
* overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
5439
* band_2
5440
*
5441
* A value of 0xff stored in the channel_map indicates that the channel
5442
* is not supported by the hardware at all.
5443
*
5444
* A value of 0xfe in the channel_map indicates that the channel is not
5445
* valid for Tx with the current hardware. This means that
5446
* while the system can tune and receive on a given channel, it may not
5447
* be able to associate or transmit any frames on that
5448
* channel. There is no corresponding channel information for that
5449
* entry.
5450
*
5451
*********************************************************************/
5452
5453
/* 2.4 GHz */
5454
static const u8 iwl4965_eeprom_band_1[14] = {
5455
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
5456
};
5457
5458
/* 5.2 GHz bands */
5459
static const u8 iwl4965_eeprom_band_2[] = { /* 4915-5080MHz */
5460
183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
5461
};
5462
5463
static const u8 iwl4965_eeprom_band_3[] = { /* 5170-5320MHz */
5464
34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
5465
};
5466
5467
static const u8 iwl4965_eeprom_band_4[] = { /* 5500-5700MHz */
5468
100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
5469
};
5470
5471
static const u8 iwl4965_eeprom_band_5[] = { /* 5725-5825MHz */
5472
145, 149, 153, 157, 161, 165
5473
};
5474
5475
static u8 iwl4965_eeprom_band_6[] = { /* 2.4 FAT channel */
5476
1, 2, 3, 4, 5, 6, 7
5477
};
5478
5479
static u8 iwl4965_eeprom_band_7[] = { /* 5.2 FAT channel */
5480
36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157
5481
};
5482
5483
static void iwl4965_init_band_reference(const struct iwl4965_priv *priv,
5484
int band,
5485
int *eeprom_ch_count,
5486
const struct iwl4965_eeprom_channel
5487
**eeprom_ch_info,
5488
const u8 **eeprom_ch_index)
5489
{
5490
switch (band) {
5491
case 1: /* 2.4GHz band */
5492
*eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_1);
5493
*eeprom_ch_info = priv->eeprom.band_1_channels;
5494
*eeprom_ch_index = iwl4965_eeprom_band_1;
5495
break;
5496
case 2: /* 4.9GHz band */
5497
*eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_2);
5498
*eeprom_ch_info = priv->eeprom.band_2_channels;
5499
*eeprom_ch_index = iwl4965_eeprom_band_2;
5500
break;
5501
case 3: /* 5.2GHz band */
5502
*eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_3);
5503
*eeprom_ch_info = priv->eeprom.band_3_channels;
5504
*eeprom_ch_index = iwl4965_eeprom_band_3;
5505
break;
5506
case 4: /* 5.5GHz band */
5507
*eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_4);
5508
*eeprom_ch_info = priv->eeprom.band_4_channels;
5509
*eeprom_ch_index = iwl4965_eeprom_band_4;
5510
break;
5511
case 5: /* 5.7GHz band */
5512
*eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_5);
5513
*eeprom_ch_info = priv->eeprom.band_5_channels;
5514
*eeprom_ch_index = iwl4965_eeprom_band_5;
5515
break;
5516
case 6: /* 2.4GHz FAT channels */
5517
*eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_6);
5518
*eeprom_ch_info = priv->eeprom.band_24_channels;
5519
*eeprom_ch_index = iwl4965_eeprom_band_6;
5520
break;
5521
case 7: /* 5 GHz FAT channels */
5522
*eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_7);
5523
*eeprom_ch_info = priv->eeprom.band_52_channels;
5524
*eeprom_ch_index = iwl4965_eeprom_band_7;
5525
break;
5526
default:
5527
BUG();
5528
return;
5529
}
5530
}
5531
5532
/**
5533
* iwl4965_get_channel_info - Find driver's private channel info
5534
*
5535
* Based on band and channel number.
5536
*/
5537
const struct iwl4965_channel_info *iwl4965_get_channel_info(const struct iwl4965_priv *priv,
5538
int phymode, u16 channel)
5539
{
5540
int i;
5541
5542
switch (phymode) {
5543
case MODE_IEEE80211A:
5544
for (i = 14; i < priv->channel_count; i++) {
5545
if (priv->channel_info[i].channel == channel)
5546
return &priv->channel_info[i];
5547
}
5548
break;
5549
5550
case MODE_IEEE80211B:
5551
case MODE_IEEE80211G:
5552
if (channel >= 1 && channel <= 14)
5553
return &priv->channel_info[channel - 1];
5554
break;
5555
5556
}
5557
5558
return NULL;
5559
}
5560
5561
#define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
5562
? # x " " : "")
5563
5564
/**
5565
* iwl4965_init_channel_map - Set up driver's info for all possible channels
5566
*/
5567
static int iwl4965_init_channel_map(struct iwl4965_priv *priv)
5568
{
5569
int eeprom_ch_count = 0;
5570
const u8 *eeprom_ch_index = NULL;
5571
const struct iwl4965_eeprom_channel *eeprom_ch_info = NULL;
5572
int band, ch;
5573
struct iwl4965_channel_info *ch_info;
5574
5575
if (priv->channel_count) {
5576
IWL_DEBUG_INFO("Channel map already initialized.\n");
5577
return 0;
5578
}
5579
5580
if (priv->eeprom.version < 0x2f) {
5581
IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
5582
priv->eeprom.version);
5583
return -EINVAL;
5584
}
5585
5586
IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
5587
5588
priv->channel_count =
5589
ARRAY_SIZE(iwl4965_eeprom_band_1) +
5590
ARRAY_SIZE(iwl4965_eeprom_band_2) +
5591
ARRAY_SIZE(iwl4965_eeprom_band_3) +
5592
ARRAY_SIZE(iwl4965_eeprom_band_4) +
5593
ARRAY_SIZE(iwl4965_eeprom_band_5);
5594
5595
IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
5596
5597
priv->channel_info = kzalloc(sizeof(struct iwl4965_channel_info) *
5598
priv->channel_count, GFP_KERNEL);
5599
if (!priv->channel_info) {
5600
IWL_ERROR("Could not allocate channel_info\n");
5601
priv->channel_count = 0;
5602
return -ENOMEM;
5603
}
5604
5605
ch_info = priv->channel_info;
5606
5607
/* Loop through the 5 EEPROM bands adding them in order to the
5608
* channel map we maintain (that contains additional information than
5609
* what just in the EEPROM) */
5610
for (band = 1; band <= 5; band++) {
5611
5612
iwl4965_init_band_reference(priv, band, &eeprom_ch_count,
5613
&eeprom_ch_info, &eeprom_ch_index);
5614
5615
/* Loop through each band adding each of the channels */
5616
for (ch = 0; ch < eeprom_ch_count; ch++) {
5617
ch_info->channel = eeprom_ch_index[ch];
5618
ch_info->phymode = (band == 1) ? MODE_IEEE80211B :
5619
MODE_IEEE80211A;
5620
5621
/* permanently store EEPROM's channel regulatory flags
5622
* and max power in channel info database. */
5623
ch_info->eeprom = eeprom_ch_info[ch];
5624
5625
/* Copy the run-time flags so they are there even on
5626
* invalid channels */
5627
ch_info->flags = eeprom_ch_info[ch].flags;
5628
5629
if (!(is_channel_valid(ch_info))) {
5630
IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
5631
"No traffic\n",
5632
ch_info->channel,
5633
ch_info->flags,
5634
is_channel_a_band(ch_info) ?
5635
"5.2" : "2.4");
5636
ch_info++;
5637
continue;
5638
}
5639
5640
/* Initialize regulatory-based run-time data */
5641
ch_info->max_power_avg = ch_info->curr_txpow =
5642
eeprom_ch_info[ch].max_power_avg;
5643
ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
5644
ch_info->min_power = 0;
5645
5646
IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
5647
" %ddBm): Ad-Hoc %ssupported\n",
5648
ch_info->channel,
5649
is_channel_a_band(ch_info) ?
5650
"5.2" : "2.4",
5651
CHECK_AND_PRINT(IBSS),
5652
CHECK_AND_PRINT(ACTIVE),
5653
CHECK_AND_PRINT(RADAR),
5654
CHECK_AND_PRINT(WIDE),
5655
CHECK_AND_PRINT(NARROW),
5656
CHECK_AND_PRINT(DFS),
5657
eeprom_ch_info[ch].flags,
5658
eeprom_ch_info[ch].max_power_avg,
5659
((eeprom_ch_info[ch].
5660
flags & EEPROM_CHANNEL_IBSS)
5661
&& !(eeprom_ch_info[ch].
5662
flags & EEPROM_CHANNEL_RADAR))
5663
? "" : "not ");
5664
5665
/* Set the user_txpower_limit to the highest power
5666
* supported by any channel */
5667
if (eeprom_ch_info[ch].max_power_avg >
5668
priv->user_txpower_limit)
5669
priv->user_txpower_limit =
5670
eeprom_ch_info[ch].max_power_avg;
5671
5672
ch_info++;
5673
}
5674
}
5675
5676
/* Two additional EEPROM bands for 2.4 and 5 GHz FAT channels */
5677
for (band = 6; band <= 7; band++) {
5678
int phymode;
5679
u8 fat_extension_chan;
5680
5681
iwl4965_init_band_reference(priv, band, &eeprom_ch_count,
5682
&eeprom_ch_info, &eeprom_ch_index);
5683
5684
/* EEPROM band 6 is 2.4, band 7 is 5 GHz */
5685
phymode = (band == 6) ? MODE_IEEE80211B : MODE_IEEE80211A;
5686
5687
/* Loop through each band adding each of the channels */
5688
for (ch = 0; ch < eeprom_ch_count; ch++) {
5689
5690
if ((band == 6) &&
5691
((eeprom_ch_index[ch] == 5) ||
5692
(eeprom_ch_index[ch] == 6) ||
5693
(eeprom_ch_index[ch] == 7)))
5694
fat_extension_chan = HT_IE_EXT_CHANNEL_MAX;
5695
else
5696
fat_extension_chan = HT_IE_EXT_CHANNEL_ABOVE;
5697
5698
/* Set up driver's info for lower half */
5699
iwl4965_set_fat_chan_info(priv, phymode,
5700
eeprom_ch_index[ch],
5701
&(eeprom_ch_info[ch]),
5702
fat_extension_chan);
5703
5704
/* Set up driver's info for upper half */
5705
iwl4965_set_fat_chan_info(priv, phymode,
5706
(eeprom_ch_index[ch] + 4),
5707
&(eeprom_ch_info[ch]),
5708
HT_IE_EXT_CHANNEL_BELOW);
5709
}
5710
}
5711
5712
return 0;
5713
}
5714
5715
/* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
5716
* sending probe req. This should be set long enough to hear probe responses
5717
* from more than one AP. */
5718
#define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
5719
#define IWL_ACTIVE_DWELL_TIME_52 (10)
5720
5721
/* For faster active scanning, scan will move to the next channel if fewer than
5722
* PLCP_QUIET_THRESH packets are heard on this channel within
5723
* ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
5724
* time if it's a quiet channel (nothing responded to our probe, and there's
5725
* no other traffic).
5726
* Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
5727
#define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
5728
#define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
5729
5730
/* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
5731
* Must be set longer than active dwell time.
5732
* For the most reliable scan, set > AP beacon interval (typically 100msec). */
5733
#define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
5734
#define IWL_PASSIVE_DWELL_TIME_52 (10)
5735
#define IWL_PASSIVE_DWELL_BASE (100)
5736
#define IWL_CHANNEL_TUNE_TIME 5
5737
5738
static inline u16 iwl4965_get_active_dwell_time(struct iwl4965_priv *priv, int phymode)
5739
{
5740
if (phymode == MODE_IEEE80211A)
5741
return IWL_ACTIVE_DWELL_TIME_52;
5742
else
5743
return IWL_ACTIVE_DWELL_TIME_24;
5744
}
5745
5746
static u16 iwl4965_get_passive_dwell_time(struct iwl4965_priv *priv, int phymode)
5747
{
5748
u16 active = iwl4965_get_active_dwell_time(priv, phymode);
5749
u16 passive = (phymode != MODE_IEEE80211A) ?
5750
IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
5751
IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
5752
5753
if (iwl4965_is_associated(priv)) {
5754
/* If we're associated, we clamp the maximum passive
5755
* dwell time to be 98% of the beacon interval (minus
5756
* 2 * channel tune time) */
5757
passive = priv->beacon_int;
5758
if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
5759
passive = IWL_PASSIVE_DWELL_BASE;
5760
passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
5761
}
5762
5763
if (passive <= active)
5764
passive = active + 1;
5765
5766
return passive;
5767
}
5768
5769
static int iwl4965_get_channels_for_scan(struct iwl4965_priv *priv, int phymode,
5770
u8 is_active, u8 direct_mask,
5771
struct iwl4965_scan_channel *scan_ch)
5772
{
5773
const struct ieee80211_channel *channels = NULL;
5774
const struct ieee80211_hw_mode *hw_mode;
5775
const struct iwl4965_channel_info *ch_info;
5776
u16 passive_dwell = 0;
5777
u16 active_dwell = 0;
5778
int added, i;
5779
5780
hw_mode = iwl4965_get_hw_mode(priv, phymode);
5781
if (!hw_mode)
5782
return 0;
5783
5784
channels = hw_mode->channels;
5785
5786
active_dwell = iwl4965_get_active_dwell_time(priv, phymode);
5787
passive_dwell = iwl4965_get_passive_dwell_time(priv, phymode);
5788
5789
for (i = 0, added = 0; i < hw_mode->num_channels; i++) {
5790
if (channels[i].chan ==
5791
le16_to_cpu(priv->active_rxon.channel)) {
5792
if (iwl4965_is_associated(priv)) {
5793
IWL_DEBUG_SCAN
5794
("Skipping current channel %d\n",
5795
le16_to_cpu(priv->active_rxon.channel));
5796
continue;
5797
}
5798
} else if (priv->only_active_channel)
5799
continue;
5800
5801
scan_ch->channel = channels[i].chan;
5802
5803
ch_info = iwl4965_get_channel_info(priv, phymode,
5804
scan_ch->channel);
5805
if (!is_channel_valid(ch_info)) {
5806
IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
5807
scan_ch->channel);
5808
continue;
5809
}
5810
5811
if (!is_active || is_channel_passive(ch_info) ||
5812
!(channels[i].flag & IEEE80211_CHAN_W_ACTIVE_SCAN))
5813
scan_ch->type = 0; /* passive */
5814
else
5815
scan_ch->type = 1; /* active */
5816
5817
if (scan_ch->type & 1)
5818
scan_ch->type |= (direct_mask << 1);
5819
5820
if (is_channel_narrow(ch_info))
5821
scan_ch->type |= (1 << 7);
5822
5823
scan_ch->active_dwell = cpu_to_le16(active_dwell);
5824
scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
5825
5826
/* Set txpower levels to defaults */
5827
scan_ch->tpc.dsp_atten = 110;
5828
/* scan_pwr_info->tpc.dsp_atten; */
5829
5830
/*scan_pwr_info->tpc.tx_gain; */
5831
if (phymode == MODE_IEEE80211A)
5832
scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
5833
else {
5834
scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
5835
/* NOTE: if we were doing 6Mb OFDM for scans we'd use
5836
* power level:
5837
* scan_ch->tpc.tx_gain = ((1<<5) | (2 << 3)) | 3;
5838
*/
5839
}
5840
5841
IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
5842
scan_ch->channel,
5843
(scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
5844
(scan_ch->type & 1) ?
5845
active_dwell : passive_dwell);
5846
5847
scan_ch++;
5848
added++;
5849
}
5850
5851
IWL_DEBUG_SCAN("total channels to scan %d \n", added);
5852
return added;
5853
}
5854
5855
static void iwl4965_reset_channel_flag(struct iwl4965_priv *priv)
5856
{
5857
int i, j;
5858
for (i = 0; i < 3; i++) {
5859
struct ieee80211_hw_mode *hw_mode = (void *)&priv->modes[i];
5860
for (j = 0; j < hw_mode->num_channels; j++)
5861
hw_mode->channels[j].flag = hw_mode->channels[j].val;
5862
}
5863
}
5864
5865
static void iwl4965_init_hw_rates(struct iwl4965_priv *priv,
5866
struct ieee80211_rate *rates)
5867
{
5868
int i;
5869
5870
for (i = 0; i < IWL_RATE_COUNT; i++) {
5871
rates[i].rate = iwl4965_rates[i].ieee * 5;
5872
rates[i].val = i; /* Rate scaling will work on indexes */
5873
rates[i].val2 = i;
5874
rates[i].flags = IEEE80211_RATE_SUPPORTED;
5875
/* Only OFDM have the bits-per-symbol set */
5876
if ((i <= IWL_LAST_OFDM_RATE) && (i >= IWL_FIRST_OFDM_RATE))
5877
rates[i].flags |= IEEE80211_RATE_OFDM;
5878
else {
5879
/*
5880
* If CCK 1M then set rate flag to CCK else CCK_2
5881
* which is CCK | PREAMBLE2
5882
*/
5883
rates[i].flags |= (iwl4965_rates[i].plcp == 10) ?
5884
IEEE80211_RATE_CCK : IEEE80211_RATE_CCK_2;
5885
}
5886
5887
/* Set up which ones are basic rates... */
5888
if (IWL_BASIC_RATES_MASK & (1 << i))
5889
rates[i].flags |= IEEE80211_RATE_BASIC;
5890
}
5891
}
5892
5893
/**
5894
* iwl4965_init_geos - Initialize mac80211's geo/channel info based from eeprom
5895
*/
5896
static int iwl4965_init_geos(struct iwl4965_priv *priv)
5897
{
5898
struct iwl4965_channel_info *ch;
5899
struct ieee80211_hw_mode *modes;
5900
struct ieee80211_channel *channels;
5901
struct ieee80211_channel *geo_ch;
5902
struct ieee80211_rate *rates;
5903
int i = 0;
5904
enum {
5905
A = 0,
5906
B = 1,
5907
G = 2,
5908
A_11N = 3,
5909
G_11N = 4,
5910
};
5911
int mode_count = 5;
5912
5913
if (priv->modes) {
5914
IWL_DEBUG_INFO("Geography modes already initialized.\n");
5915
set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5916
return 0;
5917
}
5918
5919
modes = kzalloc(sizeof(struct ieee80211_hw_mode) * mode_count,
5920
GFP_KERNEL);
5921
if (!modes)
5922
return -ENOMEM;
5923
5924
channels = kzalloc(sizeof(struct ieee80211_channel) *
5925
priv->channel_count, GFP_KERNEL);
5926
if (!channels) {
5927
kfree(modes);
5928
return -ENOMEM;
5929
}
5930
5931
rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_MAX_RATES + 1)),
5932
GFP_KERNEL);
5933
if (!rates) {
5934
kfree(modes);
5935
kfree(channels);
5936
return -ENOMEM;
5937
}
5938
5939
/* 0 = 802.11a
5940
* 1 = 802.11b
5941
* 2 = 802.11g
5942
*/
5943
5944
/* 5.2GHz channels start after the 2.4GHz channels */
5945
modes[A].mode = MODE_IEEE80211A;
5946
modes[A].channels = &channels[ARRAY_SIZE(iwl4965_eeprom_band_1)];
5947
modes[A].rates = rates;
5948
modes[A].num_rates = 8; /* just OFDM */
5949
modes[A].rates = &rates[4];
5950
modes[A].num_channels = 0;
5951
5952
modes[B].mode = MODE_IEEE80211B;
5953
modes[B].channels = channels;
5954
modes[B].rates = rates;
5955
modes[B].num_rates = 4; /* just CCK */
5956
modes[B].num_channels = 0;
5957
5958
modes[G].mode = MODE_IEEE80211G;
5959
modes[G].channels = channels;
5960
modes[G].rates = rates;
5961
modes[G].num_rates = 12; /* OFDM & CCK */
5962
modes[G].num_channels = 0;
5963
5964
modes[G_11N].mode = MODE_IEEE80211G;
5965
modes[G_11N].channels = channels;
5966
modes[G_11N].num_rates = 13; /* OFDM & CCK */
5967
modes[G_11N].rates = rates;
5968
modes[G_11N].num_channels = 0;
5969
5970
modes[A_11N].mode = MODE_IEEE80211A;
5971
modes[A_11N].channels = &channels[ARRAY_SIZE(iwl4965_eeprom_band_1)];
5972
modes[A_11N].rates = &rates[4];
5973
modes[A_11N].num_rates = 9; /* just OFDM */
5974
modes[A_11N].num_channels = 0;
5975
5976
priv->ieee_channels = channels;
5977
priv->ieee_rates = rates;
5978
5979
iwl4965_init_hw_rates(priv, rates);
5980
5981
for (i = 0, geo_ch = channels; i < priv->channel_count; i++) {
5982
ch = &priv->channel_info[i];
5983
5984
if (!is_channel_valid(ch)) {
5985
IWL_DEBUG_INFO("Channel %d [%sGHz] is restricted -- "
5986
"skipping.\n",
5987
ch->channel, is_channel_a_band(ch) ?
5988
"5.2" : "2.4");
5989
continue;
5990
}
5991
5992
if (is_channel_a_band(ch)) {
5993
geo_ch = &modes[A].channels[modes[A].num_channels++];
5994
modes[A_11N].num_channels++;
5995
} else {
5996
geo_ch = &modes[B].channels[modes[B].num_channels++];
5997
modes[G].num_channels++;
5998
modes[G_11N].num_channels++;
5999
}
6000
6001
geo_ch->freq = ieee80211chan2mhz(ch->channel);
6002
geo_ch->chan = ch->channel;
6003
geo_ch->power_level = ch->max_power_avg;
6004
geo_ch->antenna_max = 0xff;
6005
6006
if (is_channel_valid(ch)) {
6007
geo_ch->flag = IEEE80211_CHAN_W_SCAN;
6008
if (ch->flags & EEPROM_CHANNEL_IBSS)
6009
geo_ch->flag |= IEEE80211_CHAN_W_IBSS;
6010
6011
if (ch->flags & EEPROM_CHANNEL_ACTIVE)
6012
geo_ch->flag |= IEEE80211_CHAN_W_ACTIVE_SCAN;
6013
6014
if (ch->flags & EEPROM_CHANNEL_RADAR)
6015
geo_ch->flag |= IEEE80211_CHAN_W_RADAR_DETECT;
6016
6017
if (ch->max_power_avg > priv->max_channel_txpower_limit)
6018
priv->max_channel_txpower_limit =
6019
ch->max_power_avg;
6020
}
6021
6022
geo_ch->val = geo_ch->flag;
6023
}
6024
6025
if ((modes[A].num_channels == 0) && priv->is_abg) {
6026
printk(KERN_INFO DRV_NAME
6027
": Incorrectly detected BG card as ABG. Please send "
6028
"your PCI ID 0x%04X:0x%04X to maintainer.\n",
6029
priv->pci_dev->device, priv->pci_dev->subsystem_device);
6030
priv->is_abg = 0;
6031
}
6032
6033
printk(KERN_INFO DRV_NAME
6034
": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
6035
modes[G].num_channels, modes[A].num_channels);
6036
6037
/*
6038
* NOTE: We register these in preference of order -- the
6039
* stack doesn't currently (as of 7.0.6 / Apr 24 '07) pick
6040
* a phymode based on rates or AP capabilities but seems to
6041
* configure it purely on if the channel being configured
6042
* is supported by a mode -- and the first match is taken
6043
*/
6044
6045
if (modes[G].num_channels)
6046
iwlwifi_iwlwifi_ieee80211_register_hwmode(priv->hw, &modes[G]);
6047
if (modes[B].num_channels)
6048
iwlwifi_iwlwifi_ieee80211_register_hwmode(priv->hw, &modes[B]);
6049
if (modes[A].num_channels)
6050
iwlwifi_iwlwifi_ieee80211_register_hwmode(priv->hw, &modes[A]);
6051
6052
priv->modes = modes;
6053
set_bit(STATUS_GEO_CONFIGURED, &priv->status);
6054
6055
return 0;
6056
}
6057
6058
/******************************************************************************
6059
*
6060
* uCode download functions
6061
*
6062
******************************************************************************/
6063
6064
static void iwl4965_dealloc_ucode_pci(struct iwl4965_priv *priv)
6065
{
6066
iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
6067
iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
6068
iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
6069
iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
6070
iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
6071
iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
6072
}
6073
6074
/**
6075
* iwl4965_verify_inst_full - verify runtime uCode image in card vs. host,
6076
* looking at all data.
6077
*/
6078
static int iwl4965_verify_inst_full(struct iwl4965_priv *priv, __le32 * image,
6079
u32 len)
6080
{
6081
u32 val;
6082
u32 save_len = len;
6083
int rc = 0;
6084
u32 errcnt;
6085
6086
IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
6087
6088
rc = iwl4965_grab_nic_access(priv);
6089
if (rc)
6090
return rc;
6091
6092
iwl4965_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
6093
6094
errcnt = 0;
6095
for (; len > 0; len -= sizeof(u32), image++) {
6096
/* read data comes through single port, auto-incr addr */
6097
/* NOTE: Use the debugless read so we don't flood kernel log
6098
* if IWL_DL_IO is set */
6099
val = _iwl4965_read_direct32(priv, HBUS_TARG_MEM_RDAT);
6100
if (val != le32_to_cpu(*image)) {
6101
IWL_ERROR("uCode INST section is invalid at "
6102
"offset 0x%x, is 0x%x, s/b 0x%x\n",
6103
save_len - len, val, le32_to_cpu(*image));
6104
rc = -EIO;
6105
errcnt++;
6106
if (errcnt >= 20)
6107
break;
6108
}
6109
}
6110
6111
iwl4965_release_nic_access(priv);
6112
6113
if (!errcnt)
6114
IWL_DEBUG_INFO
6115
("ucode image in INSTRUCTION memory is good\n");
6116
6117
return rc;
6118
}
6119
6120
6121
/**
6122
* iwl4965_verify_inst_sparse - verify runtime uCode image in card vs. host,
6123
* using sample data 100 bytes apart. If these sample points are good,
6124
* it's a pretty good bet that everything between them is good, too.
6125
*/
6126
static int iwl4965_verify_inst_sparse(struct iwl4965_priv *priv, __le32 *image, u32 len)
6127
{
6128
u32 val;
6129
int rc = 0;
6130
u32 errcnt = 0;
6131
u32 i;
6132
6133
IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
6134
6135
rc = iwl4965_grab_nic_access(priv);
6136
if (rc)
6137
return rc;
6138
6139
for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
6140
/* read data comes through single port, auto-incr addr */
6141
/* NOTE: Use the debugless read so we don't flood kernel log
6142
* if IWL_DL_IO is set */
6143
iwl4965_write_direct32(priv, HBUS_TARG_MEM_RADDR,
6144
i + RTC_INST_LOWER_BOUND);
6145
val = _iwl4965_read_direct32(priv, HBUS_TARG_MEM_RDAT);
6146
if (val != le32_to_cpu(*image)) {
6147
#if 0 /* Enable this if you want to see details */
6148
IWL_ERROR("uCode INST section is invalid at "
6149
"offset 0x%x, is 0x%x, s/b 0x%x\n",
6150
i, val, *image);
6151
#endif
6152
rc = -EIO;
6153
errcnt++;
6154
if (errcnt >= 3)
6155
break;
6156
}
6157
}
6158
6159
iwl4965_release_nic_access(priv);
6160
6161
return rc;
6162
}
6163
6164
6165
/**
6166
* iwl4965_verify_ucode - determine which instruction image is in SRAM,
6167
* and verify its contents
6168
*/
6169
static int iwl4965_verify_ucode(struct iwl4965_priv *priv)
6170
{
6171
__le32 *image;
6172
u32 len;
6173
int rc = 0;
6174
6175
/* Try bootstrap */
6176
image = (__le32 *)priv->ucode_boot.v_addr;
6177
len = priv->ucode_boot.len;
6178
rc = iwl4965_verify_inst_sparse(priv, image, len);
6179
if (rc == 0) {
6180
IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
6181
return 0;
6182
}
6183
6184
/* Try initialize */
6185
image = (__le32 *)priv->ucode_init.v_addr;
6186
len = priv->ucode_init.len;
6187
rc = iwl4965_verify_inst_sparse(priv, image, len);
6188
if (rc == 0) {
6189
IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
6190
return 0;
6191
}
6192
6193
/* Try runtime/protocol */
6194
image = (__le32 *)priv->ucode_code.v_addr;
6195
len = priv->ucode_code.len;
6196
rc = iwl4965_verify_inst_sparse(priv, image, len);
6197
if (rc == 0) {
6198
IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
6199
return 0;
6200
}
6201
6202
IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
6203
6204
/* Since nothing seems to match, show first several data entries in
6205
* instruction SRAM, so maybe visual inspection will give a clue.
6206
* Selection of bootstrap image (vs. other images) is arbitrary. */
6207
image = (__le32 *)priv->ucode_boot.v_addr;
6208
len = priv->ucode_boot.len;
6209
rc = iwl4965_verify_inst_full(priv, image, len);
6210
6211
return rc;
6212
}
6213
6214
6215
/* check contents of special bootstrap uCode SRAM */
6216
static int iwl4965_verify_bsm(struct iwl4965_priv *priv)
6217
{
6218
__le32 *image = priv->ucode_boot.v_addr;
6219
u32 len = priv->ucode_boot.len;
6220
u32 reg;
6221
u32 val;
6222
6223
IWL_DEBUG_INFO("Begin verify bsm\n");
6224
6225
/* verify BSM SRAM contents */
6226
val = iwl4965_read_prph(priv, BSM_WR_DWCOUNT_REG);
6227
for (reg = BSM_SRAM_LOWER_BOUND;
6228
reg < BSM_SRAM_LOWER_BOUND + len;
6229
reg += sizeof(u32), image ++) {
6230
val = iwl4965_read_prph(priv, reg);
6231
if (val != le32_to_cpu(*image)) {
6232
IWL_ERROR("BSM uCode verification failed at "
6233
"addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
6234
BSM_SRAM_LOWER_BOUND,
6235
reg - BSM_SRAM_LOWER_BOUND, len,
6236
val, le32_to_cpu(*image));
6237
return -EIO;
6238
}
6239
}
6240
6241
IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
6242
6243
return 0;
6244
}
6245
6246
/**
6247
* iwl4965_load_bsm - Load bootstrap instructions
6248
*
6249
* BSM operation:
6250
*
6251
* The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
6252
* in special SRAM that does not power down during RFKILL. When powering back
6253
* up after power-saving sleeps (or during initial uCode load), the BSM loads
6254
* the bootstrap program into the on-board processor, and starts it.
6255
*
6256
* The bootstrap program loads (via DMA) instructions and data for a new
6257
* program from host DRAM locations indicated by the host driver in the
6258
* BSM_DRAM_* registers. Once the new program is loaded, it starts
6259
* automatically.
6260
*
6261
* When initializing the NIC, the host driver points the BSM to the
6262
* "initialize" uCode image. This uCode sets up some internal data, then
6263
* notifies host via "initialize alive" that it is complete.
6264
*
6265
* The host then replaces the BSM_DRAM_* pointer values to point to the
6266
* normal runtime uCode instructions and a backup uCode data cache buffer
6267
* (filled initially with starting data values for the on-board processor),
6268
* then triggers the "initialize" uCode to load and launch the runtime uCode,
6269
* which begins normal operation.
6270
*
6271
* When doing a power-save shutdown, runtime uCode saves data SRAM into
6272
* the backup data cache in DRAM before SRAM is powered down.
6273
*
6274
* When powering back up, the BSM loads the bootstrap program. This reloads
6275
* the runtime uCode instructions and the backup data cache into SRAM,
6276
* and re-launches the runtime uCode from where it left off.
6277
*/
6278
static int iwl4965_load_bsm(struct iwl4965_priv *priv)
6279
{
6280
__le32 *image = priv->ucode_boot.v_addr;
6281
u32 len = priv->ucode_boot.len;
6282
dma_addr_t pinst;
6283
dma_addr_t pdata;
6284
u32 inst_len;
6285
u32 data_len;
6286
int rc;
6287
int i;
6288
u32 done;
6289
u32 reg_offset;
6290
6291
IWL_DEBUG_INFO("Begin load bsm\n");
6292
6293
/* make sure bootstrap program is no larger than BSM's SRAM size */
6294
if (len > IWL_MAX_BSM_SIZE)
6295
return -EINVAL;
6296
6297
/* Tell bootstrap uCode where to find the "Initialize" uCode
6298
* in host DRAM ... host DRAM physical address bits 35:4 for 4965.
6299
* NOTE: iwl4965_initialize_alive_start() will replace these values,
6300
* after the "initialize" uCode has run, to point to
6301
* runtime/protocol instructions and backup data cache. */
6302
pinst = priv->ucode_init.p_addr >> 4;
6303
pdata = priv->ucode_init_data.p_addr >> 4;
6304
inst_len = priv->ucode_init.len;
6305
data_len = priv->ucode_init_data.len;
6306
6307
rc = iwl4965_grab_nic_access(priv);
6308
if (rc)
6309
return rc;
6310
6311
iwl4965_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
6312
iwl4965_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6313
iwl4965_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
6314
iwl4965_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
6315
6316
/* Fill BSM memory with bootstrap instructions */
6317
for (reg_offset = BSM_SRAM_LOWER_BOUND;
6318
reg_offset < BSM_SRAM_LOWER_BOUND + len;
6319
reg_offset += sizeof(u32), image++)
6320
_iwl4965_write_prph(priv, reg_offset,
6321
le32_to_cpu(*image));
6322
6323
rc = iwl4965_verify_bsm(priv);
6324
if (rc) {
6325
iwl4965_release_nic_access(priv);
6326
return rc;
6327
}
6328
6329
/* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
6330
iwl4965_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
6331
iwl4965_write_prph(priv, BSM_WR_MEM_DST_REG,
6332
RTC_INST_LOWER_BOUND);
6333
iwl4965_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
6334
6335
/* Load bootstrap code into instruction SRAM now,
6336
* to prepare to load "initialize" uCode */
6337
iwl4965_write_prph(priv, BSM_WR_CTRL_REG,
6338
BSM_WR_CTRL_REG_BIT_START);
6339
6340
/* Wait for load of bootstrap uCode to finish */
6341
for (i = 0; i < 100; i++) {
6342
done = iwl4965_read_prph(priv, BSM_WR_CTRL_REG);
6343
if (!(done & BSM_WR_CTRL_REG_BIT_START))
6344
break;
6345
udelay(10);
6346
}
6347
if (i < 100)
6348
IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
6349
else {
6350
IWL_ERROR("BSM write did not complete!\n");
6351
return -EIO;
6352
}
6353
6354
/* Enable future boot loads whenever power management unit triggers it
6355
* (e.g. when powering back up after power-save shutdown) */
6356
iwl4965_write_prph(priv, BSM_WR_CTRL_REG,
6357
BSM_WR_CTRL_REG_BIT_START_EN);
6358
6359
iwl4965_release_nic_access(priv);
6360
6361
return 0;
6362
}
6363
6364
static void iwl4965_nic_start(struct iwl4965_priv *priv)
6365
{
6366
/* Remove all resets to allow NIC to operate */
6367
iwl4965_write32(priv, CSR_RESET, 0);
6368
}
6369
6370
6371
/**
6372
* iwl4965_read_ucode - Read uCode images from disk file.
6373
*
6374
* Copy into buffers for card to fetch via bus-mastering
6375
*/
6376
static int iwl4965_read_ucode(struct iwl4965_priv *priv)
6377
{
6378
struct iwl4965_ucode *ucode;
6379
int ret;
6380
const struct firmware *ucode_raw;
6381
const char *name = "iwlwifi-4965" IWL4965_UCODE_API ".ucode";
6382
u8 *src;
6383
size_t len;
6384
u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
6385
6386
/* Ask kernel firmware_class module to get the boot firmware off disk.
6387
* request_firmware() is synchronous, file is in memory on return. */
6388
ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
6389
if (ret < 0) {
6390
IWL_ERROR("%s firmware file req failed: Reason %d\n",
6391
name, ret);
6392
goto error;
6393
}
6394
6395
IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
6396
name, ucode_raw->size);
6397
6398
/* Make sure that we got at least our header! */
6399
if (ucode_raw->size < sizeof(*ucode)) {
6400
IWL_ERROR("File size way too small!\n");
6401
ret = -EINVAL;
6402
goto err_release;
6403
}
6404
6405
/* Data from ucode file: header followed by uCode images */
6406
ucode = (void *)ucode_raw->data;
6407
6408
ver = le32_to_cpu(ucode->ver);
6409
inst_size = le32_to_cpu(ucode->inst_size);
6410
data_size = le32_to_cpu(ucode->data_size);
6411
init_size = le32_to_cpu(ucode->init_size);
6412
init_data_size = le32_to_cpu(ucode->init_data_size);
6413
boot_size = le32_to_cpu(ucode->boot_size);
6414
6415
IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
6416
IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
6417
inst_size);
6418
IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
6419
data_size);
6420
IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
6421
init_size);
6422
IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
6423
init_data_size);
6424
IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
6425
boot_size);
6426
6427
/* Verify size of file vs. image size info in file's header */
6428
if (ucode_raw->size < sizeof(*ucode) +
6429
inst_size + data_size + init_size +
6430
init_data_size + boot_size) {
6431
6432
IWL_DEBUG_INFO("uCode file size %d too small\n",
6433
(int)ucode_raw->size);
6434
ret = -EINVAL;
6435
goto err_release;
6436
}
6437
6438
/* Verify that uCode images will fit in card's SRAM */
6439
if (inst_size > IWL_MAX_INST_SIZE) {
6440
IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
6441
inst_size);
6442
ret = -EINVAL;
6443
goto err_release;
6444
}
6445
6446
if (data_size > IWL_MAX_DATA_SIZE) {
6447
IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
6448
data_size);
6449
ret = -EINVAL;
6450
goto err_release;
6451
}
6452
if (init_size > IWL_MAX_INST_SIZE) {
6453
IWL_DEBUG_INFO
6454
("uCode init instr len %d too large to fit in\n",
6455
init_size);
6456
ret = -EINVAL;
6457
goto err_release;
6458
}
6459
if (init_data_size > IWL_MAX_DATA_SIZE) {
6460
IWL_DEBUG_INFO
6461
("uCode init data len %d too large to fit in\n",
6462
init_data_size);
6463
ret = -EINVAL;
6464
goto err_release;
6465
}
6466
if (boot_size > IWL_MAX_BSM_SIZE) {
6467
IWL_DEBUG_INFO
6468
("uCode boot instr len %d too large to fit in\n",
6469
boot_size);
6470
ret = -EINVAL;
6471
goto err_release;
6472
}
6473
6474
/* Allocate ucode buffers for card's bus-master loading ... */
6475
6476
/* Runtime instructions and 2 copies of data:
6477
* 1) unmodified from disk
6478
* 2) backup cache for save/restore during power-downs */
6479
priv->ucode_code.len = inst_size;
6480
iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
6481
6482
priv->ucode_data.len = data_size;
6483
iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
6484
6485
priv->ucode_data_backup.len = data_size;
6486
iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
6487
6488
/* Initialization instructions and data */
6489
if (init_size && init_data_size) {
6490
priv->ucode_init.len = init_size;
6491
iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
6492
6493
priv->ucode_init_data.len = init_data_size;
6494
iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
6495
6496
if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
6497
goto err_pci_alloc;
6498
}
6499
6500
/* Bootstrap (instructions only, no data) */
6501
if (boot_size) {
6502
priv->ucode_boot.len = boot_size;
6503
iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
6504
6505
if (!priv->ucode_boot.v_addr)
6506
goto err_pci_alloc;
6507
}
6508
6509
/* Copy images into buffers for card's bus-master reads ... */
6510
6511
/* Runtime instructions (first block of data in file) */
6512
src = &ucode->data[0];
6513
len = priv->ucode_code.len;
6514
IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
6515
memcpy(priv->ucode_code.v_addr, src, len);
6516
IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
6517
priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
6518
6519
/* Runtime data (2nd block)
6520
* NOTE: Copy into backup buffer will be done in iwl4965_up() */
6521
src = &ucode->data[inst_size];
6522
len = priv->ucode_data.len;
6523
IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
6524
memcpy(priv->ucode_data.v_addr, src, len);
6525
memcpy(priv->ucode_data_backup.v_addr, src, len);
6526
6527
/* Initialization instructions (3rd block) */
6528
if (init_size) {
6529
src = &ucode->data[inst_size + data_size];
6530
len = priv->ucode_init.len;
6531
IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
6532
len);
6533
memcpy(priv->ucode_init.v_addr, src, len);
6534
}
6535
6536
/* Initialization data (4th block) */
6537
if (init_data_size) {
6538
src = &ucode->data[inst_size + data_size + init_size];
6539
len = priv->ucode_init_data.len;
6540
IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
6541
len);
6542
memcpy(priv->ucode_init_data.v_addr, src, len);
6543
}
6544
6545
/* Bootstrap instructions (5th block) */
6546
src = &ucode->data[inst_size + data_size + init_size + init_data_size];
6547
len = priv->ucode_boot.len;
6548
IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
6549
memcpy(priv->ucode_boot.v_addr, src, len);
6550
6551
/* We have our copies now, allow OS release its copies */
6552
release_firmware(ucode_raw);
6553
return 0;
6554
6555
err_pci_alloc:
6556
IWL_ERROR("failed to allocate pci memory\n");
6557
ret = -ENOMEM;
6558
iwl4965_dealloc_ucode_pci(priv);
6559
6560
err_release:
6561
release_firmware(ucode_raw);
6562
6563
error:
6564
return ret;
6565
}
6566
6567
6568
/**
6569
* iwl4965_set_ucode_ptrs - Set uCode address location
6570
*
6571
* Tell initialization uCode where to find runtime uCode.
6572
*
6573
* BSM registers initially contain pointers to initialization uCode.
6574
* We need to replace them to load runtime uCode inst and data,
6575
* and to save runtime data when powering down.
6576
*/
6577
static int iwl4965_set_ucode_ptrs(struct iwl4965_priv *priv)
6578
{
6579
dma_addr_t pinst;
6580
dma_addr_t pdata;
6581
int rc = 0;
6582
unsigned long flags;
6583
6584
/* bits 35:4 for 4965 */
6585
pinst = priv->ucode_code.p_addr >> 4;
6586
pdata = priv->ucode_data_backup.p_addr >> 4;
6587
6588
spin_lock_irqsave(&priv->lock, flags);
6589
rc = iwl4965_grab_nic_access(priv);
6590
if (rc) {
6591
spin_unlock_irqrestore(&priv->lock, flags);
6592
return rc;
6593
}
6594
6595
/* Tell bootstrap uCode where to find image to load */
6596
iwl4965_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
6597
iwl4965_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6598
iwl4965_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
6599
priv->ucode_data.len);
6600
6601
/* Inst bytecount must be last to set up, bit 31 signals uCode
6602
* that all new ptr/size info is in place */
6603
iwl4965_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
6604
priv->ucode_code.len | BSM_DRAM_INST_LOAD);
6605
6606
iwl4965_release_nic_access(priv);
6607
6608
spin_unlock_irqrestore(&priv->lock, flags);
6609
6610
IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
6611
6612
return rc;
6613
}
6614
6615
/**
6616
* iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
6617
*
6618
* Called after REPLY_ALIVE notification received from "initialize" uCode.
6619
*
6620
* The 4965 "initialize" ALIVE reply contains calibration data for:
6621
* Voltage, temperature, and MIMO tx gain correction, now stored in priv
6622
* (3945 does not contain this data).
6623
*
6624
* Tell "initialize" uCode to go ahead and load the runtime uCode.
6625
*/
6626
static void iwl4965_init_alive_start(struct iwl4965_priv *priv)
6627
{
6628
/* Check alive response for "valid" sign from uCode */
6629
if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
6630
/* We had an error bringing up the hardware, so take it
6631
* all the way back down so we can try again */
6632
IWL_DEBUG_INFO("Initialize Alive failed.\n");
6633
goto restart;
6634
}
6635
6636
/* Bootstrap uCode has loaded initialize uCode ... verify inst image.
6637
* This is a paranoid check, because we would not have gotten the
6638
* "initialize" alive if code weren't properly loaded. */
6639
if (iwl4965_verify_ucode(priv)) {
6640
/* Runtime instruction load was bad;
6641
* take it all the way back down so we can try again */
6642
IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
6643
goto restart;
6644
}
6645
6646
/* Calculate temperature */
6647
priv->temperature = iwl4965_get_temperature(priv);
6648
6649
/* Send pointers to protocol/runtime uCode image ... init code will
6650
* load and launch runtime uCode, which will send us another "Alive"
6651
* notification. */
6652
IWL_DEBUG_INFO("Initialization Alive received.\n");
6653
if (iwl4965_set_ucode_ptrs(priv)) {
6654
/* Runtime instruction load won't happen;
6655
* take it all the way back down so we can try again */
6656
IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
6657
goto restart;
6658
}
6659
return;
6660
6661
restart:
6662
queue_work(priv->workqueue, &priv->restart);
6663
}
6664
6665
6666
/**
6667
* iwl4965_alive_start - called after REPLY_ALIVE notification received
6668
* from protocol/runtime uCode (initialization uCode's
6669
* Alive gets handled by iwl4965_init_alive_start()).
6670
*/
6671
static void iwl4965_alive_start(struct iwl4965_priv *priv)
6672
{
6673
int rc = 0;
6674
6675
IWL_DEBUG_INFO("Runtime Alive received.\n");
6676
6677
if (priv->card_alive.is_valid != UCODE_VALID_OK) {
6678
/* We had an error bringing up the hardware, so take it
6679
* all the way back down so we can try again */
6680
IWL_DEBUG_INFO("Alive failed.\n");
6681
goto restart;
6682
}
6683
6684
/* Initialize uCode has loaded Runtime uCode ... verify inst image.
6685
* This is a paranoid check, because we would not have gotten the
6686
* "runtime" alive if code weren't properly loaded. */
6687
if (iwl4965_verify_ucode(priv)) {
6688
/* Runtime instruction load was bad;
6689
* take it all the way back down so we can try again */
6690
IWL_DEBUG_INFO("Bad runtime uCode load.\n");
6691
goto restart;
6692
}
6693
6694
iwl4965_clear_stations_table(priv);
6695
6696
rc = iwl4965_alive_notify(priv);
6697
if (rc) {
6698
IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
6699
rc);
6700
goto restart;
6701
}
6702
6703
/* After the ALIVE response, we can send host commands to 4965 uCode */
6704
set_bit(STATUS_ALIVE, &priv->status);
6705
6706
/* Clear out the uCode error bit if it is set */
6707
clear_bit(STATUS_FW_ERROR, &priv->status);
6708
6709
rc = iwl4965_init_channel_map(priv);
6710
if (rc) {
6711
IWL_ERROR("initializing regulatory failed: %d\n", rc);
6712
return;
6713
}
6714
6715
iwl4965_init_geos(priv);
6716
iwl4965_reset_channel_flag(priv);
6717
6718
if (iwl4965_is_rfkill(priv))
6719
return;
6720
6721
iwlwifi_ieee80211_start_queues(priv->hw);
6722
6723
priv->active_rate = priv->rates_mask;
6724
priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
6725
6726
iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
6727
6728
if (iwl4965_is_associated(priv)) {
6729
struct iwl4965_rxon_cmd *active_rxon =
6730
(struct iwl4965_rxon_cmd *)(&priv->active_rxon);
6731
6732
memcpy(&priv->staging_rxon, &priv->active_rxon,
6733
sizeof(priv->staging_rxon));
6734
active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6735
} else {
6736
/* Initialize our rx_config data */
6737
iwl4965_connection_init_rx_config(priv);
6738
memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
6739
}
6740
6741
/* Configure Bluetooth device coexistence support */
6742
iwl4965_send_bt_config(priv);
6743
6744
/* Configure the adapter for unassociated operation */
6745
iwl4965_commit_rxon(priv);
6746
6747
/* At this point, the NIC is initialized and operational */
6748
priv->notif_missed_beacons = 0;
6749
set_bit(STATUS_READY, &priv->status);
6750
6751
iwl4965_rf_kill_ct_config(priv);
6752
6753
iwl4965_led_register(priv);
6754
6755
IWL_DEBUG_INFO("ALIVE processing complete.\n");
6756
wake_up_interruptible(&priv->wait_command_queue);
6757
6758
if (priv->error_recovering)
6759
iwl4965_error_recovery(priv);
6760
6761
return;
6762
6763
restart:
6764
queue_work(priv->workqueue, &priv->restart);
6765
}
6766
6767
static void iwl4965_cancel_deferred_work(struct iwl4965_priv *priv);
6768
6769
static void __iwl4965_down(struct iwl4965_priv *priv)
6770
{
6771
unsigned long flags;
6772
int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
6773
struct ieee80211_conf *conf = NULL;
6774
6775
IWL_DEBUG_INFO(DRV_NAME " is going down\n");
6776
6777
conf = ieee80211_get_hw_conf(priv->hw);
6778
6779
if (!exit_pending)
6780
set_bit(STATUS_EXIT_PENDING, &priv->status);
6781
6782
iwl4965_led_unregister(priv);
6783
6784
iwl4965_clear_stations_table(priv);
6785
6786
/* Unblock any waiting calls */
6787
wake_up_interruptible_all(&priv->wait_command_queue);
6788
6789
/* Wipe out the EXIT_PENDING status bit if we are not actually
6790
* exiting the module */
6791
if (!exit_pending)
6792
clear_bit(STATUS_EXIT_PENDING, &priv->status);
6793
6794
/* stop and reset the on-board processor */
6795
iwl4965_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
6796
6797
/* tell the device to stop sending interrupts */
6798
iwl4965_disable_interrupts(priv);
6799
6800
if (priv->mac80211_registered)
6801
iwlwifi_iwlwifi_ieee80211_stop_queues(priv->hw);
6802
6803
/* If we have not previously called iwl4965_init() then
6804
* clear all bits but the RF Kill and SUSPEND bits and return */
6805
if (!iwl4965_is_init(priv)) {
6806
priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6807
STATUS_RF_KILL_HW |
6808
test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6809
STATUS_RF_KILL_SW |
6810
test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6811
STATUS_IN_SUSPEND;
6812
goto exit;
6813
}
6814
6815
/* ...otherwise clear out all the status bits but the RF Kill and
6816
* SUSPEND bits and continue taking the NIC down. */
6817
priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6818
STATUS_RF_KILL_HW |
6819
test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6820
STATUS_RF_KILL_SW |
6821
test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6822
STATUS_IN_SUSPEND |
6823
test_bit(STATUS_FW_ERROR, &priv->status) <<
6824
STATUS_FW_ERROR;
6825
6826
spin_lock_irqsave(&priv->lock, flags);
6827
iwl4965_clear_bit(priv, CSR_GP_CNTRL,
6828
CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
6829
spin_unlock_irqrestore(&priv->lock, flags);
6830
6831
iwl4965_hw_txq_ctx_stop(priv);
6832
iwl4965_hw_rxq_stop(priv);
6833
6834
spin_lock_irqsave(&priv->lock, flags);
6835
if (!iwl4965_grab_nic_access(priv)) {
6836
iwl4965_write_prph(priv, APMG_CLK_DIS_REG,
6837
APMG_CLK_VAL_DMA_CLK_RQT);
6838
iwl4965_release_nic_access(priv);
6839
}
6840
spin_unlock_irqrestore(&priv->lock, flags);
6841
6842
udelay(5);
6843
6844
iwl4965_hw_nic_stop_master(priv);
6845
iwl4965_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
6846
iwl4965_hw_nic_reset(priv);
6847
6848
exit:
6849
memset(&priv->card_alive, 0, sizeof(struct iwl4965_alive_resp));
6850
6851
if (priv->ibss_beacon)
6852
dev_kfree_skb(priv->ibss_beacon);
6853
priv->ibss_beacon = NULL;
6854
6855
/* clear out any free frames */
6856
iwl4965_clear_free_frames(priv);
6857
}
6858
6859
static void iwl4965_down(struct iwl4965_priv *priv)
6860
{
6861
mutex_lock(&priv->mutex);
6862
__iwl4965_down(priv);
6863
mutex_unlock(&priv->mutex);
6864
6865
iwl4965_cancel_deferred_work(priv);
6866
}
6867
6868
#define MAX_HW_RESTARTS 5
6869
6870
static int __iwl4965_up(struct iwl4965_priv *priv)
6871
{
6872
int rc, i;
6873
6874
if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6875
IWL_WARNING("Exit pending; will not bring the NIC up\n");
6876
return -EIO;
6877
}
6878
6879
if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
6880
IWL_WARNING("Radio disabled by SW RF kill (module "
6881
"parameter)\n");
6882
return -ENODEV;
6883
}
6884
6885
/* If platform's RF_KILL switch is NOT set to KILL */
6886
if (iwl4965_read32(priv, CSR_GP_CNTRL) &
6887
CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
6888
clear_bit(STATUS_RF_KILL_HW, &priv->status);
6889
else {
6890
set_bit(STATUS_RF_KILL_HW, &priv->status);
6891
if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
6892
IWL_WARNING("Radio disabled by HW RF Kill switch\n");
6893
return -ENODEV;
6894
}
6895
}
6896
6897
iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
6898
6899
rc = iwl4965_hw_nic_init(priv);
6900
if (rc) {
6901
IWL_ERROR("Unable to int nic\n");
6902
return rc;
6903
}
6904
6905
/* make sure rfkill handshake bits are cleared */
6906
iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6907
iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
6908
CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
6909
6910
/* clear (again), then enable host interrupts */
6911
iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
6912
iwl4965_enable_interrupts(priv);
6913
6914
/* really make sure rfkill handshake bits are cleared */
6915
iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6916
iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6917
6918
/* Copy original ucode data image from disk into backup cache.
6919
* This will be used to initialize the on-board processor's
6920
* data SRAM for a clean start when the runtime program first loads. */
6921
memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
6922
priv->ucode_data.len);
6923
6924
/* We return success when we resume from suspend and rf_kill is on. */
6925
if (test_bit(STATUS_RF_KILL_HW, &priv->status))
6926
return 0;
6927
6928
for (i = 0; i < MAX_HW_RESTARTS; i++) {
6929
6930
iwl4965_clear_stations_table(priv);
6931
6932
/* load bootstrap state machine,
6933
* load bootstrap program into processor's memory,
6934
* prepare to load the "initialize" uCode */
6935
rc = iwl4965_load_bsm(priv);
6936
6937
if (rc) {
6938
IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
6939
continue;
6940
}
6941
6942
/* start card; "initialize" will load runtime ucode */
6943
iwl4965_nic_start(priv);
6944
6945
IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
6946
6947
return 0;
6948
}
6949
6950
set_bit(STATUS_EXIT_PENDING, &priv->status);
6951
__iwl4965_down(priv);
6952
6953
/* tried to restart and config the device for as long as our
6954
* patience could withstand */
6955
IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
6956
return -EIO;
6957
}
6958
6959
6960
/*****************************************************************************
6961
*
6962
* Workqueue callbacks
6963
*
6964
*****************************************************************************/
6965
6966
static void iwl4965_bg_init_alive_start(struct work_struct *data)
6967
{
6968
struct iwl4965_priv *priv =
6969
container_of(data, struct iwl4965_priv, init_alive_start.work);
6970
6971
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6972
return;
6973
6974
mutex_lock(&priv->mutex);
6975
iwl4965_init_alive_start(priv);
6976
mutex_unlock(&priv->mutex);
6977
}
6978
6979
static void iwl4965_bg_alive_start(struct work_struct *data)
6980
{
6981
struct iwl4965_priv *priv =
6982
container_of(data, struct iwl4965_priv, alive_start.work);
6983
6984
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6985
return;
6986
6987
mutex_lock(&priv->mutex);
6988
iwl4965_alive_start(priv);
6989
mutex_unlock(&priv->mutex);
6990
}
6991
6992
static void iwl4965_bg_rf_kill(struct work_struct *work)
6993
{
6994
struct iwl4965_priv *priv = container_of(work, struct iwl4965_priv, rf_kill);
6995
6996
wake_up_interruptible(&priv->wait_command_queue);
6997
6998
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6999
return;
7000
7001
mutex_lock(&priv->mutex);
7002
7003
if (!iwl4965_is_rfkill(priv)) {
7004
IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
7005
"HW and/or SW RF Kill no longer active, restarting "
7006
"device\n");
7007
if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
7008
queue_work(priv->workqueue, &priv->restart);
7009
} else {
7010
7011
if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
7012
IWL_DEBUG_RF_KILL("Can not turn radio back on - "
7013
"disabled by SW switch\n");
7014
else
7015
IWL_WARNING("Radio Frequency Kill Switch is On:\n"
7016
"Kill switch must be turned off for "
7017
"wireless networking to work.\n");
7018
}
7019
mutex_unlock(&priv->mutex);
7020
}
7021
7022
#define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
7023
7024
static void iwl4965_bg_scan_check(struct work_struct *data)
7025
{
7026
struct iwl4965_priv *priv =
7027
container_of(data, struct iwl4965_priv, scan_check.work);
7028
7029
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7030
return;
7031
7032
mutex_lock(&priv->mutex);
7033
if (test_bit(STATUS_SCANNING, &priv->status) ||
7034
test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
7035
IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
7036
"Scan completion watchdog resetting adapter (%dms)\n",
7037
jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
7038
7039
if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
7040
iwl4965_send_scan_abort(priv);
7041
}
7042
mutex_unlock(&priv->mutex);
7043
}
7044
7045
static void iwl4965_bg_request_scan(struct work_struct *data)
7046
{
7047
struct iwl4965_priv *priv =
7048
container_of(data, struct iwl4965_priv, request_scan);
7049
struct iwl4965_host_cmd cmd = {
7050
.id = REPLY_SCAN_CMD,
7051
.len = sizeof(struct iwl4965_scan_cmd),
7052
.meta.flags = CMD_SIZE_HUGE,
7053
};
7054
int rc = 0;
7055
struct iwl4965_scan_cmd *scan;
7056
struct ieee80211_conf *conf = NULL;
7057
u8 direct_mask;
7058
int phymode;
7059
7060
conf = ieee80211_get_hw_conf(priv->hw);
7061
7062
mutex_lock(&priv->mutex);
7063
7064
if (!iwl4965_is_ready(priv)) {
7065
IWL_WARNING("request scan called when driver not ready.\n");
7066
goto done;
7067
}
7068
7069
/* Make sure the scan wasn't cancelled before this queued work
7070
* was given the chance to run... */
7071
if (!test_bit(STATUS_SCANNING, &priv->status))
7072
goto done;
7073
7074
/* This should never be called or scheduled if there is currently
7075
* a scan active in the hardware. */
7076
if (test_bit(STATUS_SCAN_HW, &priv->status)) {
7077
IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
7078
"Ignoring second request.\n");
7079
rc = -EIO;
7080
goto done;
7081
}
7082
7083
if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
7084
IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
7085
goto done;
7086
}
7087
7088
if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
7089
IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
7090
goto done;
7091
}
7092
7093
if (iwl4965_is_rfkill(priv)) {
7094
IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
7095
goto done;
7096
}
7097
7098
if (!test_bit(STATUS_READY, &priv->status)) {
7099
IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
7100
goto done;
7101
}
7102
7103
if (!priv->scan_bands) {
7104
IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
7105
goto done;
7106
}
7107
7108
if (!priv->scan) {
7109
priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
7110
IWL_MAX_SCAN_SIZE, GFP_KERNEL);
7111
if (!priv->scan) {
7112
rc = -ENOMEM;
7113
goto done;
7114
}
7115
}
7116
scan = priv->scan;
7117
memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
7118
7119
scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
7120
scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
7121
7122
if (iwl4965_is_associated(priv)) {
7123
u16 interval = 0;
7124
u32 extra;
7125
u32 suspend_time = 100;
7126
u32 scan_suspend_time = 100;
7127
unsigned long flags;
7128
7129
IWL_DEBUG_INFO("Scanning while associated...\n");
7130
7131
spin_lock_irqsave(&priv->lock, flags);
7132
interval = priv->beacon_int;
7133
spin_unlock_irqrestore(&priv->lock, flags);
7134
7135
scan->suspend_time = 0;
7136
scan->max_out_time = cpu_to_le32(200 * 1024);
7137
if (!interval)
7138
interval = suspend_time;
7139
7140
extra = (suspend_time / interval) << 22;
7141
scan_suspend_time = (extra |
7142
((suspend_time % interval) * 1024));
7143
scan->suspend_time = cpu_to_le32(scan_suspend_time);
7144
IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
7145
scan_suspend_time, interval);
7146
}
7147
7148
/* We should add the ability for user to lock to PASSIVE ONLY */
7149
if (priv->one_direct_scan) {
7150
IWL_DEBUG_SCAN
7151
("Kicking off one direct scan for '%s'\n",
7152
iwl4965_escape_essid(priv->direct_ssid,
7153
priv->direct_ssid_len));
7154
scan->direct_scan[0].id = WLAN_EID_SSID;
7155
scan->direct_scan[0].len = priv->direct_ssid_len;
7156
memcpy(scan->direct_scan[0].ssid,
7157
priv->direct_ssid, priv->direct_ssid_len);
7158
direct_mask = 1;
7159
} else if (!iwl4965_is_associated(priv) && priv->essid_len) {
7160
scan->direct_scan[0].id = WLAN_EID_SSID;
7161
scan->direct_scan[0].len = priv->essid_len;
7162
memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
7163
direct_mask = 1;
7164
} else
7165
direct_mask = 0;
7166
7167
/* We don't build a direct scan probe request; the uCode will do
7168
* that based on the direct_mask added to each channel entry */
7169
scan->tx_cmd.len = cpu_to_le16(
7170
iwl4965_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
7171
IWL_MAX_SCAN_SIZE - sizeof(scan), 0));
7172
scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
7173
scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
7174
scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
7175
7176
/* flags + rate selection */
7177
7178
scan->tx_cmd.tx_flags |= cpu_to_le32(0x200);
7179
7180
switch (priv->scan_bands) {
7181
case 2:
7182
scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
7183
scan->tx_cmd.rate_n_flags =
7184
iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
7185
RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
7186
7187
scan->good_CRC_th = 0;
7188
phymode = MODE_IEEE80211G;
7189
break;
7190
7191
case 1:
7192
scan->tx_cmd.rate_n_flags =
7193
iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
7194
RATE_MCS_ANT_B_MSK);
7195
scan->good_CRC_th = IWL_GOOD_CRC_TH;
7196
phymode = MODE_IEEE80211A;
7197
break;
7198
7199
default:
7200
IWL_WARNING("Invalid scan band count\n");
7201
goto done;
7202
}
7203
7204
/* select Rx chains */
7205
7206
/* Force use of chains B and C (0x6) for scan Rx.
7207
* Avoid A (0x1) because of its off-channel reception on A-band.
7208
* MIMO is not used here, but value is required to make uCode happy. */
7209
scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
7210
cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
7211
(0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
7212
(0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
7213
7214
if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
7215
scan->filter_flags = RXON_FILTER_PROMISC_MSK;
7216
7217
if (direct_mask)
7218
IWL_DEBUG_SCAN
7219
("Initiating direct scan for %s.\n",
7220
iwl4965_escape_essid(priv->essid, priv->essid_len));
7221
else
7222
IWL_DEBUG_SCAN("Initiating indirect scan.\n");
7223
7224
scan->channel_count =
7225
iwl4965_get_channels_for_scan(
7226
priv, phymode, 1, /* active */
7227
direct_mask,
7228
(void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
7229
7230
cmd.len += le16_to_cpu(scan->tx_cmd.len) +
7231
scan->channel_count * sizeof(struct iwl4965_scan_channel);
7232
cmd.data = scan;
7233
scan->len = cpu_to_le16(cmd.len);
7234
7235
set_bit(STATUS_SCAN_HW, &priv->status);
7236
rc = iwl4965_send_cmd_sync(priv, &cmd);
7237
if (rc)
7238
goto done;
7239
7240
queue_delayed_work(priv->workqueue, &priv->scan_check,
7241
IWL_SCAN_CHECK_WATCHDOG);
7242
7243
mutex_unlock(&priv->mutex);
7244
return;
7245
7246
done:
7247
/* inform mac80211 scan aborted */
7248
queue_work(priv->workqueue, &priv->scan_completed);
7249
mutex_unlock(&priv->mutex);
7250
}
7251
7252
static void iwl4965_bg_up(struct work_struct *data)
7253
{
7254
struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv, up);
7255
7256
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7257
return;
7258
7259
mutex_lock(&priv->mutex);
7260
__iwl4965_up(priv);
7261
mutex_unlock(&priv->mutex);
7262
}
7263
7264
static void iwl4965_bg_restart(struct work_struct *data)
7265
{
7266
struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv, restart);
7267
7268
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7269
return;
7270
7271
iwl4965_down(priv);
7272
queue_work(priv->workqueue, &priv->up);
7273
}
7274
7275
static void iwl4965_bg_rx_replenish(struct work_struct *data)
7276
{
7277
struct iwl4965_priv *priv =
7278
container_of(data, struct iwl4965_priv, rx_replenish);
7279
7280
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7281
return;
7282
7283
mutex_lock(&priv->mutex);
7284
iwl4965_rx_replenish(priv);
7285
mutex_unlock(&priv->mutex);
7286
}
7287
7288
#define IWL_DELAY_NEXT_SCAN (HZ*2)
7289
7290
static void iwl4965_bg_post_associate(struct work_struct *data)
7291
{
7292
struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv,
7293
post_associate.work);
7294
7295
int rc = 0;
7296
struct ieee80211_conf *conf = NULL;
7297
7298
if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7299
IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
7300
return;
7301
}
7302
7303
IWL_DEBUG_ASSOC("Associated as %d to: " MAC_FMT "\n",
7304
priv->assoc_id, MAC_ARG(priv->active_rxon.bssid_addr));
7305
7306
7307
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7308
return;
7309
7310
mutex_lock(&priv->mutex);
7311
7312
if (!priv->interface_id || !priv->is_open) {
7313
mutex_unlock(&priv->mutex);
7314
return;
7315
}
7316
iwl4965_scan_cancel_timeout(priv, 200);
7317
7318
conf = ieee80211_get_hw_conf(priv->hw);
7319
7320
priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7321
iwl4965_commit_rxon(priv);
7322
7323
memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
7324
iwl4965_setup_rxon_timing(priv);
7325
rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7326
sizeof(priv->rxon_timing), &priv->rxon_timing);
7327
if (rc)
7328
IWL_WARNING("REPLY_RXON_TIMING failed - "
7329
"Attempting to continue.\n");
7330
7331
priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7332
7333
#ifdef CONFIG_IWL4965_HT
7334
if (priv->is_ht_enabled && priv->current_assoc_ht.is_ht)
7335
iwl4965_set_rxon_ht(priv, &priv->current_assoc_ht);
7336
else {
7337
priv->active_rate_ht[0] = 0;
7338
priv->active_rate_ht[1] = 0;
7339
priv->current_channel_width = IWL_CHANNEL_WIDTH_20MHZ;
7340
}
7341
#endif /* CONFIG_IWL4965_HT*/
7342
iwl4965_set_rxon_chain(priv);
7343
priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7344
7345
IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
7346
priv->assoc_id, priv->beacon_int);
7347
7348
if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7349
priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
7350
else
7351
priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
7352
7353
if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7354
if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
7355
priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
7356
else
7357
priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
7358
7359
if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7360
priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
7361
7362
}
7363
7364
iwl4965_commit_rxon(priv);
7365
7366
switch (priv->iw_mode) {
7367
case IEEE80211_IF_TYPE_STA:
7368
iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
7369
break;
7370
7371
case IEEE80211_IF_TYPE_IBSS:
7372
7373
/* clear out the station table */
7374
iwl4965_clear_stations_table(priv);
7375
7376
iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
7377
iwl4965_rxon_add_station(priv, priv->bssid, 0);
7378
iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
7379
iwl4965_send_beacon_cmd(priv);
7380
7381
break;
7382
7383
default:
7384
IWL_ERROR("%s Should not be called in %d mode\n",
7385
__FUNCTION__, priv->iw_mode);
7386
break;
7387
}
7388
7389
iwl4965_sequence_reset(priv);
7390
7391
#ifdef CONFIG_IWL4965_SENSITIVITY
7392
/* Enable Rx differential gain and sensitivity calibrations */
7393
iwl4965_chain_noise_reset(priv);
7394
priv->start_calib = 1;
7395
#endif /* CONFIG_IWL4965_SENSITIVITY */
7396
7397
if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7398
priv->assoc_station_added = 1;
7399
7400
#ifdef CONFIG_IWL4965_QOS
7401
iwl4965_activate_qos(priv, 0);
7402
#endif /* CONFIG_IWL4965_QOS */
7403
/* we have just associated, don't start scan too early */
7404
priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
7405
mutex_unlock(&priv->mutex);
7406
}
7407
7408
static void iwl4965_bg_abort_scan(struct work_struct *work)
7409
{
7410
struct iwl4965_priv *priv = container_of(work, struct iwl4965_priv, abort_scan);
7411
7412
if (!iwl4965_is_ready(priv))
7413
return;
7414
7415
mutex_lock(&priv->mutex);
7416
7417
set_bit(STATUS_SCAN_ABORTING, &priv->status);
7418
iwl4965_send_scan_abort(priv);
7419
7420
mutex_unlock(&priv->mutex);
7421
}
7422
7423
static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
7424
7425
static void iwl4965_bg_scan_completed(struct work_struct *work)
7426
{
7427
struct iwl4965_priv *priv =
7428
container_of(work, struct iwl4965_priv, scan_completed);
7429
7430
IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
7431
7432
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7433
return;
7434
7435
if (test_bit(STATUS_CONF_PENDING, &priv->status))
7436
iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
7437
7438
iwlwifi_ieee80211_scan_completed(priv->hw);
7439
7440
/* Since setting the TXPOWER may have been deferred while
7441
* performing the scan, fire one off */
7442
mutex_lock(&priv->mutex);
7443
iwl4965_hw_reg_send_txpower(priv);
7444
mutex_unlock(&priv->mutex);
7445
}
7446
7447
/*****************************************************************************
7448
*
7449
* mac80211 entry point functions
7450
*
7451
*****************************************************************************/
7452
7453
#define UCODE_READY_TIMEOUT (2 * HZ)
7454
7455
static int iwl4965_mac_open(struct ieee80211_hw *hw)
7456
{
7457
struct iwl4965_priv *priv = hw->priv;
7458
int ret;
7459
7460
IWL_DEBUG_MAC80211("enter\n");
7461
7462
if (pci_enable_device(priv->pci_dev)) {
7463
IWL_ERROR("Fail to pci_enable_device\n");
7464
return -ENODEV;
7465
}
7466
pci_restore_state(priv->pci_dev);
7467
pci_enable_msi(priv->pci_dev);
7468
7469
ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
7470
DRV_NAME, priv);
7471
if (ret) {
7472
IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
7473
goto out_disable_msi;
7474
}
7475
7476
/* we should be verifying the device is ready to be opened */
7477
mutex_lock(&priv->mutex);
7478
7479
memset(&priv->staging_rxon, 0, sizeof(struct iwl4965_rxon_cmd));
7480
/* fetch ucode file from disk, alloc and copy to bus-master buffers ...
7481
* ucode filename and max sizes are card-specific. */
7482
7483
if (!priv->ucode_code.len) {
7484
ret = iwl4965_read_ucode(priv);
7485
if (ret) {
7486
IWL_ERROR("Could not read microcode: %d\n", ret);
7487
mutex_unlock(&priv->mutex);
7488
goto out_release_irq;
7489
}
7490
}
7491
7492
ret = __iwl4965_up(priv);
7493
7494
mutex_unlock(&priv->mutex);
7495
7496
if (ret)
7497
goto out_release_irq;
7498
7499
IWL_DEBUG_INFO("Start UP work done.\n");
7500
7501
if (test_bit(STATUS_IN_SUSPEND, &priv->status))
7502
return 0;
7503
7504
/* Wait for START_ALIVE from ucode. Otherwise callbacks from
7505
* mac80211 will not be run successfully. */
7506
ret = wait_event_interruptible_timeout(priv->wait_command_queue,
7507
test_bit(STATUS_READY, &priv->status),
7508
UCODE_READY_TIMEOUT);
7509
if (!ret) {
7510
if (!test_bit(STATUS_READY, &priv->status)) {
7511
IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
7512
jiffies_to_msecs(UCODE_READY_TIMEOUT));
7513
ret = -ETIMEDOUT;
7514
goto out_release_irq;
7515
}
7516
}
7517
7518
priv->is_open = 1;
7519
IWL_DEBUG_MAC80211("leave\n");
7520
return 0;
7521
7522
out_release_irq:
7523
free_irq(priv->pci_dev->irq, priv);
7524
out_disable_msi:
7525
pci_disable_msi(priv->pci_dev);
7526
pci_disable_device(priv->pci_dev);
7527
priv->is_open = 0;
7528
IWL_DEBUG_MAC80211("leave - failed\n");
7529
return ret;
7530
}
7531
7532
static int iwl4965_mac_stop(struct ieee80211_hw *hw)
7533
{
7534
struct iwl4965_priv *priv = hw->priv;
7535
7536
IWL_DEBUG_MAC80211("enter\n");
7537
7538
if (!priv->is_open) {
7539
IWL_DEBUG_MAC80211("leave - skip\n");
7540
return 0;
7541
}
7542
7543
priv->is_open = 0;
7544
7545
if (iwl4965_is_ready_rf(priv)) {
7546
/* stop mac, cancel any scan request and clear
7547
* RXON_FILTER_ASSOC_MSK BIT
7548
*/
7549
mutex_lock(&priv->mutex);
7550
iwl4965_scan_cancel_timeout(priv, 100);
7551
cancel_delayed_work(&priv->post_associate);
7552
mutex_unlock(&priv->mutex);
7553
}
7554
7555
iwl4965_down(priv);
7556
7557
flush_workqueue(priv->workqueue);
7558
free_irq(priv->pci_dev->irq, priv);
7559
pci_disable_msi(priv->pci_dev);
7560
pci_save_state(priv->pci_dev);
7561
pci_disable_device(priv->pci_dev);
7562
7563
IWL_DEBUG_MAC80211("leave\n");
7564
return 0;
7565
}
7566
7567
static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
7568
struct ieee80211_tx_control *ctl)
7569
{
7570
struct iwl4965_priv *priv = hw->priv;
7571
7572
IWL_DEBUG_MAC80211("enter\n");
7573
7574
if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
7575
IWL_DEBUG_MAC80211("leave - monitor\n");
7576
return -1;
7577
}
7578
7579
IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
7580
ctl->tx_rate);
7581
7582
if (iwl4965_tx_skb(priv, skb, ctl))
7583
dev_kfree_skb_any(skb);
7584
7585
IWL_DEBUG_MAC80211("leave\n");
7586
return 0;
7587
}
7588
7589
static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
7590
struct ieee80211_if_init_conf *conf)
7591
{
7592
struct iwl4965_priv *priv = hw->priv;
7593
unsigned long flags;
7594
7595
IWL_DEBUG_MAC80211("enter: id %d, type %d\n", conf->if_id, conf->type);
7596
7597
if (priv->interface_id) {
7598
IWL_DEBUG_MAC80211("leave - interface_id != 0\n");
7599
return 0;
7600
}
7601
7602
spin_lock_irqsave(&priv->lock, flags);
7603
priv->interface_id = conf->if_id;
7604
7605
spin_unlock_irqrestore(&priv->lock, flags);
7606
7607
mutex_lock(&priv->mutex);
7608
7609
if (conf->mac_addr) {
7610
IWL_DEBUG_MAC80211("Set: " MAC_FMT "\n", MAC_ARG(conf->mac_addr));
7611
memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
7612
}
7613
7614
if (iwl4965_is_ready(priv))
7615
iwl4965_set_mode(priv, conf->type);
7616
7617
mutex_unlock(&priv->mutex);
7618
7619
IWL_DEBUG_MAC80211("leave\n");
7620
return 0;
7621
}
7622
7623
/**
7624
* iwl4965_mac_config - mac80211 config callback
7625
*
7626
* We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
7627
* be set inappropriately and the driver currently sets the hardware up to
7628
* use it whenever needed.
7629
*/
7630
static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
7631
{
7632
struct iwl4965_priv *priv = hw->priv;
7633
const struct iwl4965_channel_info *ch_info;
7634
unsigned long flags;
7635
int ret = 0;
7636
7637
mutex_lock(&priv->mutex);
7638
IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel);
7639
7640
if (!iwl4965_is_ready(priv)) {
7641
IWL_DEBUG_MAC80211("leave - not ready\n");
7642
ret = -EIO;
7643
goto out;
7644
}
7645
7646
/* TODO: Figure out how to get ieee80211_local->sta_scanning w/ only
7647
* what is exposed through include/ declarations */
7648
if (unlikely(!iwl4965_param_disable_hw_scan &&
7649
test_bit(STATUS_SCANNING, &priv->status))) {
7650
IWL_DEBUG_MAC80211("leave - scanning\n");
7651
set_bit(STATUS_CONF_PENDING, &priv->status);
7652
mutex_unlock(&priv->mutex);
7653
return 0;
7654
}
7655
7656
spin_lock_irqsave(&priv->lock, flags);
7657
7658
ch_info = iwl4965_get_channel_info(priv, conf->phymode, conf->channel);
7659
if (!is_channel_valid(ch_info)) {
7660
IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this SKU.\n",
7661
conf->channel, conf->phymode);
7662
IWL_DEBUG_MAC80211("leave - invalid channel\n");
7663
spin_unlock_irqrestore(&priv->lock, flags);
7664
ret = -EINVAL;
7665
goto out;
7666
}
7667
7668
#ifdef CONFIG_IWL4965_HT
7669
/* if we are switching fron ht to 2.4 clear flags
7670
* from any ht related info since 2.4 does not
7671
* support ht */
7672
if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel)
7673
#ifdef IEEE80211_CONF_CHANNEL_SWITCH
7674
&& !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
7675
#endif
7676
)
7677
priv->staging_rxon.flags = 0;
7678
#endif /* CONFIG_IWL4965_HT */
7679
7680
iwl4965_set_rxon_channel(priv, conf->phymode, conf->channel);
7681
7682
iwl4965_set_flags_for_phymode(priv, conf->phymode);
7683
7684
/* The list of supported rates and rate mask can be different
7685
* for each phymode; since the phymode may have changed, reset
7686
* the rate mask to what mac80211 lists */
7687
iwl4965_set_rate(priv);
7688
7689
spin_unlock_irqrestore(&priv->lock, flags);
7690
7691
#ifdef IEEE80211_CONF_CHANNEL_SWITCH
7692
if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
7693
iwl4965_hw_channel_switch(priv, conf->channel);
7694
goto out;
7695
}
7696
#endif
7697
7698
iwl4965_radio_kill_sw(priv, !conf->radio_enabled);
7699
7700
if (!conf->radio_enabled) {
7701
IWL_DEBUG_MAC80211("leave - radio disabled\n");
7702
goto out;
7703
}
7704
7705
if (iwl4965_is_rfkill(priv)) {
7706
IWL_DEBUG_MAC80211("leave - RF kill\n");
7707
ret = -EIO;
7708
goto out;
7709
}
7710
7711
iwl4965_set_rate(priv);
7712
7713
if (memcmp(&priv->active_rxon,
7714
&priv->staging_rxon, sizeof(priv->staging_rxon)))
7715
iwl4965_commit_rxon(priv);
7716
else
7717
IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
7718
7719
IWL_DEBUG_MAC80211("leave\n");
7720
7721
out:
7722
clear_bit(STATUS_CONF_PENDING, &priv->status);
7723
mutex_unlock(&priv->mutex);
7724
return ret;
7725
}
7726
7727
static void iwl4965_config_ap(struct iwl4965_priv *priv)
7728
{
7729
int rc = 0;
7730
7731
if (priv->status & STATUS_EXIT_PENDING)
7732
return;
7733
7734
/* The following should be done only at AP bring up */
7735
if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
7736
7737
/* RXON - unassoc (to set timing command) */
7738
priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7739
iwl4965_commit_rxon(priv);
7740
7741
/* RXON Timing */
7742
memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
7743
iwl4965_setup_rxon_timing(priv);
7744
rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7745
sizeof(priv->rxon_timing), &priv->rxon_timing);
7746
if (rc)
7747
IWL_WARNING("REPLY_RXON_TIMING failed - "
7748
"Attempting to continue.\n");
7749
7750
iwl4965_set_rxon_chain(priv);
7751
7752
/* FIXME: what should be the assoc_id for AP? */
7753
priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7754
if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7755
priv->staging_rxon.flags |=
7756
RXON_FLG_SHORT_PREAMBLE_MSK;
7757
else
7758
priv->staging_rxon.flags &=
7759
~RXON_FLG_SHORT_PREAMBLE_MSK;
7760
7761
if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7762
if (priv->assoc_capability &
7763
WLAN_CAPABILITY_SHORT_SLOT_TIME)
7764
priv->staging_rxon.flags |=
7765
RXON_FLG_SHORT_SLOT_MSK;
7766
else
7767
priv->staging_rxon.flags &=
7768
~RXON_FLG_SHORT_SLOT_MSK;
7769
7770
if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7771
priv->staging_rxon.flags &=
7772
~RXON_FLG_SHORT_SLOT_MSK;
7773
}
7774
/* restore RXON assoc */
7775
priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7776
iwl4965_commit_rxon(priv);
7777
#ifdef CONFIG_IWL4965_QOS
7778
iwl4965_activate_qos(priv, 1);
7779
#endif
7780
iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
7781
}
7782
iwl4965_send_beacon_cmd(priv);
7783
7784
/* FIXME - we need to add code here to detect a totally new
7785
* configuration, reset the AP, unassoc, rxon timing, assoc,
7786
* clear sta table, add BCAST sta... */
7787
}
7788
7789
static int iwl4965_mac_config_interface(struct ieee80211_hw *hw, int if_id,
7790
struct ieee80211_if_conf *conf)
7791
{
7792
struct iwl4965_priv *priv = hw->priv;
7793
unsigned long flags;
7794
int rc;
7795
7796
if (conf == NULL)
7797
return -EIO;
7798
7799
if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
7800
(!conf->beacon || !conf->ssid_len)) {
7801
IWL_DEBUG_MAC80211
7802
("Leaving in AP mode because HostAPD is not ready.\n");
7803
return 0;
7804
}
7805
7806
if (!iwl4965_is_alive(priv))
7807
return -EAGAIN;
7808
7809
mutex_lock(&priv->mutex);
7810
7811
IWL_DEBUG_MAC80211("enter: interface id %d\n", if_id);
7812
if (conf->bssid)
7813
IWL_DEBUG_MAC80211("bssid: " MAC_FMT "\n",
7814
MAC_ARG(conf->bssid));
7815
7816
if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
7817
!(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
7818
IWL_DEBUG_MAC80211("leave - scanning\n");
7819
mutex_unlock(&priv->mutex);
7820
return 0;
7821
}
7822
7823
if (priv->interface_id != if_id) {
7824
IWL_DEBUG_MAC80211("leave - interface_id != if_id\n");
7825
mutex_unlock(&priv->mutex);
7826
return 0;
7827
}
7828
7829
if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7830
if (!conf->bssid) {
7831
conf->bssid = priv->mac_addr;
7832
memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
7833
IWL_DEBUG_MAC80211("bssid was set to: " MAC_FMT "\n",
7834
MAC_ARG(conf->bssid));
7835
}
7836
if (priv->ibss_beacon)
7837
dev_kfree_skb(priv->ibss_beacon);
7838
7839
priv->ibss_beacon = conf->beacon;
7840
}
7841
7842
if (iwl4965_is_rfkill(priv))
7843
goto done;
7844
7845
if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
7846
!is_multicast_ether_addr(conf->bssid)) {
7847
/* If there is currently a HW scan going on in the background
7848
* then we need to cancel it else the RXON below will fail. */
7849
if (iwl4965_scan_cancel_timeout(priv, 100)) {
7850
IWL_WARNING("Aborted scan still in progress "
7851
"after 100ms\n");
7852
IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
7853
mutex_unlock(&priv->mutex);
7854
return -EAGAIN;
7855
}
7856
memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
7857
7858
/* TODO: Audit driver for usage of these members and see
7859
* if mac80211 deprecates them (priv->bssid looks like it
7860
* shouldn't be there, but I haven't scanned the IBSS code
7861
* to verify) - jpk */
7862
memcpy(priv->bssid, conf->bssid, ETH_ALEN);
7863
7864
if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7865
iwl4965_config_ap(priv);
7866
else {
7867
rc = iwl4965_commit_rxon(priv);
7868
if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
7869
iwl4965_rxon_add_station(
7870
priv, priv->active_rxon.bssid_addr, 1);
7871
}
7872
7873
} else {
7874
iwl4965_scan_cancel_timeout(priv, 100);
7875
priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7876
iwl4965_commit_rxon(priv);
7877
}
7878
7879
done:
7880
spin_lock_irqsave(&priv->lock, flags);
7881
if (!conf->ssid_len)
7882
memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7883
else
7884
memcpy(priv->essid, conf->ssid, conf->ssid_len);
7885
7886
priv->essid_len = conf->ssid_len;
7887
spin_unlock_irqrestore(&priv->lock, flags);
7888
7889
IWL_DEBUG_MAC80211("leave\n");
7890
mutex_unlock(&priv->mutex);
7891
7892
return 0;
7893
}
7894
7895
static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
7896
struct ieee80211_if_init_conf *conf)
7897
{
7898
struct iwl4965_priv *priv = hw->priv;
7899
7900
IWL_DEBUG_MAC80211("enter\n");
7901
7902
mutex_lock(&priv->mutex);
7903
7904
if (iwl4965_is_ready_rf(priv)) {
7905
iwl4965_scan_cancel_timeout(priv, 100);
7906
cancel_delayed_work(&priv->post_associate);
7907
priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7908
iwl4965_commit_rxon(priv);
7909
}
7910
if (priv->interface_id == conf->if_id) {
7911
priv->interface_id = 0;
7912
memset(priv->bssid, 0, ETH_ALEN);
7913
memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7914
priv->essid_len = 0;
7915
}
7916
mutex_unlock(&priv->mutex);
7917
7918
IWL_DEBUG_MAC80211("leave\n");
7919
}
7920
7921
static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
7922
{
7923
int rc = 0;
7924
unsigned long flags;
7925
struct iwl4965_priv *priv = hw->priv;
7926
7927
IWL_DEBUG_MAC80211("enter\n");
7928
7929
mutex_lock(&priv->mutex);
7930
spin_lock_irqsave(&priv->lock, flags);
7931
7932
if (!iwl4965_is_ready_rf(priv)) {
7933
rc = -EIO;
7934
IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
7935
goto out_unlock;
7936
}
7937
7938
if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
7939
rc = -EIO;
7940
IWL_ERROR("ERROR: APs don't scan\n");
7941
goto out_unlock;
7942
}
7943
7944
/* we don't schedule scan within next_scan_jiffies period */
7945
if (priv->next_scan_jiffies &&
7946
time_after(priv->next_scan_jiffies, jiffies)) {
7947
rc = -EAGAIN;
7948
goto out_unlock;
7949
}
7950
/* if we just finished scan ask for delay */
7951
if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
7952
IWL_DELAY_NEXT_SCAN, jiffies)) {
7953
rc = -EAGAIN;
7954
goto out_unlock;
7955
}
7956
if (len) {
7957
IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
7958
iwl4965_escape_essid(ssid, len), (int)len);
7959
7960
priv->one_direct_scan = 1;
7961
priv->direct_ssid_len = (u8)
7962
min((u8) len, (u8) IW_ESSID_MAX_SIZE);
7963
memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
7964
} else
7965
priv->one_direct_scan = 0;
7966
7967
rc = iwl4965_scan_initiate(priv);
7968
7969
IWL_DEBUG_MAC80211("leave\n");
7970
7971
out_unlock:
7972
spin_unlock_irqrestore(&priv->lock, flags);
7973
mutex_unlock(&priv->mutex);
7974
7975
return rc;
7976
}
7977
7978
static int iwl4965_mac_set_key(struct ieee80211_hw *hw, set_key_cmd cmd, u8 *addr,
7979
struct ieee80211_key_conf *key, int aid)
7980
{
7981
struct iwl4965_priv *priv = hw->priv;
7982
int rc = 0;
7983
u8 sta_id;
7984
7985
IWL_DEBUG_MAC80211("enter\n");
7986
7987
if (!iwl4965_param_hwcrypto) {
7988
IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7989
return -EOPNOTSUPP;
7990
}
7991
7992
sta_id = iwl4965_hw_find_station(priv, addr);
7993
if (sta_id == IWL_INVALID_STATION) {
7994
IWL_DEBUG_MAC80211("leave - " MAC_FMT " not in station map.\n",
7995
MAC_ARG(addr));
7996
return -EINVAL;
7997
}
7998
7999
mutex_lock(&priv->mutex);
8000
8001
iwl4965_scan_cancel_timeout(priv, 100);
8002
8003
switch (cmd) {
8004
case SET_KEY:
8005
rc = iwl4965_update_sta_key_info(priv, key, sta_id);
8006
if (!rc) {
8007
iwl4965_set_rxon_hwcrypto(priv, 1);
8008
iwl4965_commit_rxon(priv);
8009
key->hw_key_idx = sta_id;
8010
IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
8011
}
8012
break;
8013
case DISABLE_KEY:
8014
rc = iwl4965_clear_sta_key_info(priv, sta_id);
8015
if (!rc) {
8016
iwl4965_set_rxon_hwcrypto(priv, 0);
8017
iwl4965_commit_rxon(priv);
8018
IWL_DEBUG_MAC80211("disable hwcrypto key\n");
8019
}
8020
break;
8021
default:
8022
rc = -EINVAL;
8023
}
8024
8025
IWL_DEBUG_MAC80211("leave\n");
8026
mutex_unlock(&priv->mutex);
8027
8028
return rc;
8029
}
8030
8031
static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, int queue,
8032
const struct ieee80211_tx_queue_params *params)
8033
{
8034
struct iwl4965_priv *priv = hw->priv;
8035
#ifdef CONFIG_IWL4965_QOS
8036
unsigned long flags;
8037
int q;
8038
#endif /* CONFIG_IWL4965_QOS */
8039
8040
IWL_DEBUG_MAC80211("enter\n");
8041
8042
if (!iwl4965_is_ready_rf(priv)) {
8043
IWL_DEBUG_MAC80211("leave - RF not ready\n");
8044
return -EIO;
8045
}
8046
8047
if (queue >= AC_NUM) {
8048
IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
8049
return 0;
8050
}
8051
8052
#ifdef CONFIG_IWL4965_QOS
8053
if (!priv->qos_data.qos_enable) {
8054
priv->qos_data.qos_active = 0;
8055
IWL_DEBUG_MAC80211("leave - qos not enabled\n");
8056
return 0;
8057
}
8058
q = AC_NUM - 1 - queue;
8059
8060
spin_lock_irqsave(&priv->lock, flags);
8061
8062
priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
8063
priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
8064
priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
8065
priv->qos_data.def_qos_parm.ac[q].edca_txop =
8066
cpu_to_le16((params->burst_time * 100));
8067
8068
priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
8069
priv->qos_data.qos_active = 1;
8070
8071
spin_unlock_irqrestore(&priv->lock, flags);
8072
8073
mutex_lock(&priv->mutex);
8074
if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
8075
iwl4965_activate_qos(priv, 1);
8076
else if (priv->assoc_id && iwl4965_is_associated(priv))
8077
iwl4965_activate_qos(priv, 0);
8078
8079
mutex_unlock(&priv->mutex);
8080
8081
#endif /*CONFIG_IWL4965_QOS */
8082
8083
IWL_DEBUG_MAC80211("leave\n");
8084
return 0;
8085
}
8086
8087
static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
8088
struct ieee80211_tx_queue_stats *stats)
8089
{
8090
struct iwl4965_priv *priv = hw->priv;
8091
int i, avail;
8092
struct iwl4965_tx_queue *txq;
8093
struct iwl4965_queue *q;
8094
unsigned long flags;
8095
8096
IWL_DEBUG_MAC80211("enter\n");
8097
8098
if (!iwl4965_is_ready_rf(priv)) {
8099
IWL_DEBUG_MAC80211("leave - RF not ready\n");
8100
return -EIO;
8101
}
8102
8103
spin_lock_irqsave(&priv->lock, flags);
8104
8105
for (i = 0; i < AC_NUM; i++) {
8106
txq = &priv->txq[i];
8107
q = &txq->q;
8108
avail = iwl4965_queue_space(q);
8109
8110
stats->data[i].len = q->n_window - avail;
8111
stats->data[i].limit = q->n_window - q->high_mark;
8112
stats->data[i].count = q->n_window;
8113
8114
}
8115
spin_unlock_irqrestore(&priv->lock, flags);
8116
8117
IWL_DEBUG_MAC80211("leave\n");
8118
8119
return 0;
8120
}
8121
8122
static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
8123
struct ieee80211_low_level_stats *stats)
8124
{
8125
IWL_DEBUG_MAC80211("enter\n");
8126
IWL_DEBUG_MAC80211("leave\n");
8127
8128
return 0;
8129
}
8130
8131
static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
8132
{
8133
IWL_DEBUG_MAC80211("enter\n");
8134
IWL_DEBUG_MAC80211("leave\n");
8135
8136
return 0;
8137
}
8138
8139
static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
8140
{
8141
struct iwl4965_priv *priv = hw->priv;
8142
unsigned long flags;
8143
8144
mutex_lock(&priv->mutex);
8145
IWL_DEBUG_MAC80211("enter\n");
8146
8147
priv->lq_mngr.lq_ready = 0;
8148
#ifdef CONFIG_IWL4965_HT
8149
spin_lock_irqsave(&priv->lock, flags);
8150
memset(&priv->current_assoc_ht, 0, sizeof(struct sta_ht_info));
8151
spin_unlock_irqrestore(&priv->lock, flags);
8152
#ifdef CONFIG_IWL4965_HT_AGG
8153
/* if (priv->lq_mngr.agg_ctrl.granted_ba)
8154
iwl4965_turn_off_agg(priv, TID_ALL_SPECIFIED);*/
8155
8156
memset(&(priv->lq_mngr.agg_ctrl), 0, sizeof(struct iwl4965_agg_control));
8157
priv->lq_mngr.agg_ctrl.tid_traffic_load_threshold = 10;
8158
priv->lq_mngr.agg_ctrl.ba_timeout = 5000;
8159
priv->lq_mngr.agg_ctrl.auto_agg = 1;
8160
8161
if (priv->lq_mngr.agg_ctrl.auto_agg)
8162
priv->lq_mngr.agg_ctrl.requested_ba = TID_ALL_ENABLED;
8163
#endif /*CONFIG_IWL4965_HT_AGG */
8164
#endif /* CONFIG_IWL4965_HT */
8165
8166
#ifdef CONFIG_IWL4965_QOS
8167
iwl4965_reset_qos(priv);
8168
#endif
8169
8170
cancel_delayed_work(&priv->post_associate);
8171
8172
spin_lock_irqsave(&priv->lock, flags);
8173
priv->assoc_id = 0;
8174
priv->assoc_capability = 0;
8175
priv->call_post_assoc_from_beacon = 0;
8176
priv->assoc_station_added = 0;
8177
8178
/* new association get rid of ibss beacon skb */
8179
if (priv->ibss_beacon)
8180
dev_kfree_skb(priv->ibss_beacon);
8181
8182
priv->ibss_beacon = NULL;
8183
8184
priv->beacon_int = priv->hw->conf.beacon_int;
8185
priv->timestamp1 = 0;
8186
priv->timestamp0 = 0;
8187
if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
8188
priv->beacon_int = 0;
8189
8190
spin_unlock_irqrestore(&priv->lock, flags);
8191
8192
if (!iwl4965_is_ready_rf(priv)) {
8193
IWL_DEBUG_MAC80211("leave - not ready\n");
8194
mutex_unlock(&priv->mutex);
8195
return;
8196
}
8197
8198
/* we are restarting association process
8199
* clear RXON_FILTER_ASSOC_MSK bit
8200
*/
8201
if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
8202
iwl4965_scan_cancel_timeout(priv, 100);
8203
priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
8204
iwl4965_commit_rxon(priv);
8205
}
8206
8207
/* Per mac80211.h: This is only used in IBSS mode... */
8208
if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
8209
8210
IWL_DEBUG_MAC80211("leave - not in IBSS\n");
8211
mutex_unlock(&priv->mutex);
8212
return;
8213
}
8214
8215
priv->only_active_channel = 0;
8216
8217
iwl4965_set_rate(priv);
8218
8219
mutex_unlock(&priv->mutex);
8220
8221
IWL_DEBUG_MAC80211("leave\n");
8222
8223
}
8224
8225
static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
8226
struct ieee80211_tx_control *control)
8227
{
8228
struct iwl4965_priv *priv = hw->priv;
8229
unsigned long flags;
8230
8231
mutex_lock(&priv->mutex);
8232
IWL_DEBUG_MAC80211("enter\n");
8233
8234
if (!iwl4965_is_ready_rf(priv)) {
8235
IWL_DEBUG_MAC80211("leave - RF not ready\n");
8236
mutex_unlock(&priv->mutex);
8237
return -EIO;
8238
}
8239
8240
if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
8241
IWL_DEBUG_MAC80211("leave - not IBSS\n");
8242
mutex_unlock(&priv->mutex);
8243
return -EIO;
8244
}
8245
8246
spin_lock_irqsave(&priv->lock, flags);
8247
8248
if (priv->ibss_beacon)
8249
dev_kfree_skb(priv->ibss_beacon);
8250
8251
priv->ibss_beacon = skb;
8252
8253
priv->assoc_id = 0;
8254
8255
IWL_DEBUG_MAC80211("leave\n");
8256
spin_unlock_irqrestore(&priv->lock, flags);
8257
8258
#ifdef CONFIG_IWL4965_QOS
8259
iwl4965_reset_qos(priv);
8260
#endif
8261
8262
queue_work(priv->workqueue, &priv->post_associate.work);
8263
8264
mutex_unlock(&priv->mutex);
8265
8266
return 0;
8267
}
8268
8269
#ifdef CONFIG_IWL4965_HT
8270
union ht_cap_info {
8271
struct {
8272
u16 advanced_coding_cap :1;
8273
u16 supported_chan_width_set :1;
8274
u16 mimo_power_save_mode :2;
8275
u16 green_field :1;
8276
u16 short_GI20 :1;
8277
u16 short_GI40 :1;
8278
u16 tx_stbc :1;
8279
u16 rx_stbc :1;
8280
u16 beam_forming :1;
8281
u16 delayed_ba :1;
8282
u16 maximal_amsdu_size :1;
8283
u16 cck_mode_at_40MHz :1;
8284
u16 psmp_support :1;
8285
u16 stbc_ctrl_frame_support :1;
8286
u16 sig_txop_protection_support :1;
8287
};
8288
u16 val;
8289
} __attribute__ ((packed));
8290
8291
union ht_param_info{
8292
struct {
8293
u8 max_rx_ampdu_factor :2;
8294
u8 mpdu_density :3;
8295
u8 reserved :3;
8296
};
8297
u8 val;
8298
} __attribute__ ((packed));
8299
8300
union ht_exra_param_info {
8301
struct {
8302
u8 ext_chan_offset :2;
8303
u8 tx_chan_width :1;
8304
u8 rifs_mode :1;
8305
u8 controlled_access_only :1;
8306
u8 service_interval_granularity :3;
8307
};
8308
u8 val;
8309
} __attribute__ ((packed));
8310
8311
union ht_operation_mode{
8312
struct {
8313
u16 op_mode :2;
8314
u16 non_GF :1;
8315
u16 reserved :13;
8316
};
8317
u16 val;
8318
} __attribute__ ((packed));
8319
8320
8321
static int sta_ht_info_init(struct ieee80211_ht_capability *ht_cap,
8322
struct ieee80211_ht_additional_info *ht_extra,
8323
struct sta_ht_info *ht_info_ap,
8324
struct sta_ht_info *ht_info)
8325
{
8326
union ht_cap_info cap;
8327
union ht_operation_mode op_mode;
8328
union ht_param_info param_info;
8329
union ht_exra_param_info extra_param_info;
8330
8331
IWL_DEBUG_MAC80211("enter: \n");
8332
8333
if (!ht_info) {
8334
IWL_DEBUG_MAC80211("leave: ht_info is NULL\n");
8335
return -1;
8336
}
8337
8338
if (ht_cap) {
8339
cap.val = (u16) le16_to_cpu(ht_cap->capabilities_info);
8340
param_info.val = ht_cap->mac_ht_params_info;
8341
ht_info->is_ht = 1;
8342
if (cap.short_GI20)
8343
ht_info->sgf |= 0x1;
8344
if (cap.short_GI40)
8345
ht_info->sgf |= 0x2;
8346
ht_info->is_green_field = cap.green_field;
8347
ht_info->max_amsdu_size = cap.maximal_amsdu_size;
8348
ht_info->supported_chan_width = cap.supported_chan_width_set;
8349
ht_info->tx_mimo_ps_mode = cap.mimo_power_save_mode;
8350
memcpy(ht_info->supp_rates, ht_cap->supported_mcs_set, 16);
8351
8352
ht_info->ampdu_factor = param_info.max_rx_ampdu_factor;
8353
ht_info->mpdu_density = param_info.mpdu_density;
8354
8355
IWL_DEBUG_MAC80211("SISO mask 0x%X MIMO mask 0x%X \n",
8356
ht_cap->supported_mcs_set[0],
8357
ht_cap->supported_mcs_set[1]);
8358
8359
if (ht_info_ap) {
8360
ht_info->control_channel = ht_info_ap->control_channel;
8361
ht_info->extension_chan_offset =
8362
ht_info_ap->extension_chan_offset;
8363
ht_info->tx_chan_width = ht_info_ap->tx_chan_width;
8364
ht_info->operating_mode = ht_info_ap->operating_mode;
8365
}
8366
8367
if (ht_extra) {
8368
extra_param_info.val = ht_extra->ht_param;
8369
ht_info->control_channel = ht_extra->control_chan;
8370
ht_info->extension_chan_offset =
8371
extra_param_info.ext_chan_offset;
8372
ht_info->tx_chan_width = extra_param_info.tx_chan_width;
8373
op_mode.val = (u16)
8374
le16_to_cpu(ht_extra->operation_mode);
8375
ht_info->operating_mode = op_mode.op_mode;
8376
IWL_DEBUG_MAC80211("control channel %d\n",
8377
ht_extra->control_chan);
8378
}
8379
} else
8380
ht_info->is_ht = 0;
8381
8382
IWL_DEBUG_MAC80211("leave\n");
8383
return 0;
8384
}
8385
8386
static int iwl4965_mac_conf_ht(struct ieee80211_hw *hw,
8387
struct ieee80211_ht_capability *ht_cap,
8388
struct ieee80211_ht_additional_info *ht_extra)
8389
{
8390
struct iwl4965_priv *priv = hw->priv;
8391
int rs;
8392
8393
IWL_DEBUG_MAC80211("enter: \n");
8394
8395
rs = sta_ht_info_init(ht_cap, ht_extra, NULL, &priv->current_assoc_ht);
8396
iwl4965_set_rxon_chain(priv);
8397
8398
if (priv && priv->assoc_id &&
8399
(priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
8400
unsigned long flags;
8401
8402
spin_lock_irqsave(&priv->lock, flags);
8403
if (priv->beacon_int)
8404
queue_work(priv->workqueue, &priv->post_associate.work);
8405
else
8406
priv->call_post_assoc_from_beacon = 1;
8407
spin_unlock_irqrestore(&priv->lock, flags);
8408
}
8409
8410
IWL_DEBUG_MAC80211("leave: control channel %d\n",
8411
ht_extra->control_chan);
8412
return rs;
8413
8414
}
8415
8416
static void iwl4965_set_ht_capab(struct ieee80211_hw *hw,
8417
struct ieee80211_ht_capability *ht_cap,
8418
u8 use_wide_chan)
8419
{
8420
union ht_cap_info cap;
8421
union ht_param_info param_info;
8422
8423
memset(&cap, 0, sizeof(union ht_cap_info));
8424
memset(¶m_info, 0, sizeof(union ht_param_info));
8425
8426
cap.maximal_amsdu_size = HT_IE_MAX_AMSDU_SIZE_4K;
8427
cap.green_field = 1;
8428
cap.short_GI20 = 1;
8429
cap.short_GI40 = 1;
8430
cap.supported_chan_width_set = use_wide_chan;
8431
cap.mimo_power_save_mode = 0x3;
8432
8433
param_info.max_rx_ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
8434
param_info.mpdu_density = CFG_HT_MPDU_DENSITY_DEF;
8435
ht_cap->capabilities_info = (__le16) cpu_to_le16(cap.val);
8436
ht_cap->mac_ht_params_info = (u8) param_info.val;
8437
8438
ht_cap->supported_mcs_set[0] = 0xff;
8439
ht_cap->supported_mcs_set[1] = 0xff;
8440
ht_cap->supported_mcs_set[4] =
8441
(cap.supported_chan_width_set) ? 0x1: 0x0;
8442
}
8443
8444
static void iwl4965_mac_get_ht_capab(struct ieee80211_hw *hw,
8445
struct ieee80211_ht_capability *ht_cap)
8446
{
8447
u8 use_wide_channel = 1;
8448
struct iwl4965_priv *priv = hw->priv;
8449
8450
IWL_DEBUG_MAC80211("enter: \n");
8451
if (priv->channel_width != IWL_CHANNEL_WIDTH_40MHZ)
8452
use_wide_channel = 0;
8453
8454
/* no fat tx allowed on 2.4GHZ */
8455
if (priv->phymode != MODE_IEEE80211A)
8456
use_wide_channel = 0;
8457
8458
iwl4965_set_ht_capab(hw, ht_cap, use_wide_channel);
8459
IWL_DEBUG_MAC80211("leave: \n");
8460
}
8461
#endif /*CONFIG_IWL4965_HT*/
8462
8463
/*****************************************************************************
8464
*
8465
* sysfs attributes
8466
*
8467
*****************************************************************************/
8468
8469
#ifdef CONFIG_IWL4965_DEBUG
8470
8471
/*
8472
* The following adds a new attribute to the sysfs representation
8473
* of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
8474
* used for controlling the debug level.
8475
*
8476
* See the level definitions in iwl for details.
8477
*/
8478
8479
static ssize_t show_debug_level(struct device_driver *d, char *buf)
8480
{
8481
return sprintf(buf, "0x%08X\n", iwl4965_debug_level);
8482
}
8483
static ssize_t store_debug_level(struct device_driver *d,
8484
const char *buf, size_t count)
8485
{
8486
char *p = (char *)buf;
8487
u32 val;
8488
8489
val = simple_strtoul(p, &p, 0);
8490
if (p == buf)
8491
printk(KERN_INFO DRV_NAME
8492
": %s is not in hex or decimal form.\n", buf);
8493
else
8494
iwl4965_debug_level = val;
8495
8496
return strnlen(buf, count);
8497
}
8498
8499
static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
8500
show_debug_level, store_debug_level);
8501
8502
#endif /* CONFIG_IWL4965_DEBUG */
8503
8504
static ssize_t show_rf_kill(struct device *d,
8505
struct device_attribute *attr, char *buf)
8506
{
8507
/*
8508
* 0 - RF kill not enabled
8509
* 1 - SW based RF kill active (sysfs)
8510
* 2 - HW based RF kill active
8511
* 3 - Both HW and SW based RF kill active
8512
*/
8513
struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8514
int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) |
8515
(test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0);
8516
8517
return sprintf(buf, "%i\n", val);
8518
}
8519
8520
static ssize_t store_rf_kill(struct device *d,
8521
struct device_attribute *attr,
8522
const char *buf, size_t count)
8523
{
8524
struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8525
8526
mutex_lock(&priv->mutex);
8527
iwl4965_radio_kill_sw(priv, buf[0] == '1');
8528
mutex_unlock(&priv->mutex);
8529
8530
return count;
8531
}
8532
8533
static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);
8534
8535
static ssize_t show_temperature(struct device *d,
8536
struct device_attribute *attr, char *buf)
8537
{
8538
struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8539
8540
if (!iwl4965_is_alive(priv))
8541
return -EAGAIN;
8542
8543
return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
8544
}
8545
8546
static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
8547
8548
static ssize_t show_rs_window(struct device *d,
8549
struct device_attribute *attr,
8550
char *buf)
8551
{
8552
struct iwl4965_priv *priv = d->driver_data;
8553
return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
8554
}
8555
static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
8556
8557
static ssize_t show_tx_power(struct device *d,
8558
struct device_attribute *attr, char *buf)
8559
{
8560
struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8561
return sprintf(buf, "%d\n", priv->user_txpower_limit);
8562
}
8563
8564
static ssize_t store_tx_power(struct device *d,
8565
struct device_attribute *attr,
8566
const char *buf, size_t count)
8567
{
8568
struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8569
char *p = (char *)buf;
8570
u32 val;
8571
8572
val = simple_strtoul(p, &p, 10);
8573
if (p == buf)
8574
printk(KERN_INFO DRV_NAME
8575
": %s is not in decimal form.\n", buf);
8576
else
8577
iwl4965_hw_reg_set_txpower(priv, val);
8578
8579
return count;
8580
}
8581
8582
static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
8583
8584
static ssize_t show_flags(struct device *d,
8585
struct device_attribute *attr, char *buf)
8586
{
8587
struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8588
8589
return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
8590
}
8591
8592
static ssize_t store_flags(struct device *d,
8593
struct device_attribute *attr,
8594
const char *buf, size_t count)
8595
{
8596
struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8597
u32 flags = simple_strtoul(buf, NULL, 0);
8598
8599
mutex_lock(&priv->mutex);
8600
if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
8601
/* Cancel any currently running scans... */
8602
if (iwl4965_scan_cancel_timeout(priv, 100))
8603
IWL_WARNING("Could not cancel scan.\n");
8604
else {
8605
IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
8606
flags);
8607
priv->staging_rxon.flags = cpu_to_le32(flags);
8608
iwl4965_commit_rxon(priv);
8609
}
8610
}
8611
mutex_unlock(&priv->mutex);
8612
8613
return count;
8614
}
8615
8616
static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
8617
8618
static ssize_t show_filter_flags(struct device *d,
8619
struct device_attribute *attr, char *buf)
8620
{
8621
struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8622
8623
return sprintf(buf, "0x%04X\n",
8624
le32_to_cpu(priv->active_rxon.filter_flags));
8625
}
8626
8627
static ssize_t store_filter_flags(struct device *d,
8628
struct device_attribute *attr,
8629
const char *buf, size_t count)
8630
{
8631
struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8632
u32 filter_flags = simple_strtoul(buf, NULL, 0);
8633
8634
mutex_lock(&priv->mutex);
8635
if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
8636
/* Cancel any currently running scans... */
8637
if (iwl4965_scan_cancel_timeout(priv, 100))
8638
IWL_WARNING("Could not cancel scan.\n");
8639
else {
8640
IWL_DEBUG_INFO("Committing rxon.filter_flags = "
8641
"0x%04X\n", filter_flags);
8642
priv->staging_rxon.filter_flags =
8643
cpu_to_le32(filter_flags);
8644
iwl4965_commit_rxon(priv);
8645
}
8646
}
8647
mutex_unlock(&priv->mutex);
8648
8649
return count;
8650
}
8651
8652
static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
8653
store_filter_flags);
8654
8655
static ssize_t show_tune(struct device *d,
8656
struct device_attribute *attr, char *buf)
8657
{
8658
struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8659
8660
return sprintf(buf, "0x%04X\n",
8661
(priv->phymode << 8) |
8662
le16_to_cpu(priv->active_rxon.channel));
8663
}
8664
8665
static void iwl4965_set_flags_for_phymode(struct iwl4965_priv *priv, u8 phymode);
8666
8667
static ssize_t store_tune(struct device *d,
8668
struct device_attribute *attr,
8669
const char *buf, size_t count)
8670
{
8671
struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8672
char *p = (char *)buf;
8673
u16 tune = simple_strtoul(p, &p, 0);
8674
u8 phymode = (tune >> 8) & 0xff;
8675
u16 channel = tune & 0xff;
8676
8677
IWL_DEBUG_INFO("Tune request to:%d channel:%d\n", phymode, channel);
8678
8679
mutex_lock(&priv->mutex);
8680
if ((le16_to_cpu(priv->staging_rxon.channel) != channel) ||
8681
(priv->phymode != phymode)) {
8682
const struct iwl4965_channel_info *ch_info;
8683
8684
ch_info = iwl4965_get_channel_info(priv, phymode, channel);
8685
if (!ch_info) {
8686
IWL_WARNING("Requested invalid phymode/channel "
8687
"combination: %d %d\n", phymode, channel);
8688
mutex_unlock(&priv->mutex);
8689
return -EINVAL;
8690
}
8691
8692
/* Cancel any currently running scans... */
8693
if (iwl4965_scan_cancel_timeout(priv, 100))
8694
IWL_WARNING("Could not cancel scan.\n");
8695
else {
8696
IWL_DEBUG_INFO("Committing phymode and "
8697
"rxon.channel = %d %d\n",
8698
phymode, channel);
8699
8700
iwl4965_set_rxon_channel(priv, phymode, channel);
8701
iwl4965_set_flags_for_phymode(priv, phymode);
8702
8703
iwl4965_set_rate(priv);
8704
iwl4965_commit_rxon(priv);
8705
}
8706
}
8707
mutex_unlock(&priv->mutex);
8708
8709
return count;
8710
}
8711
8712
static DEVICE_ATTR(tune, S_IWUSR | S_IRUGO, show_tune, store_tune);
8713
8714
#ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
8715
8716
static ssize_t show_measurement(struct device *d,
8717
struct device_attribute *attr, char *buf)
8718
{
8719
struct iwl4965_priv *priv = dev_get_drvdata(d);
8720
struct iwl4965_spectrum_notification measure_report;
8721
u32 size = sizeof(measure_report), len = 0, ofs = 0;
8722
u8 *data = (u8 *) & measure_report;
8723
unsigned long flags;
8724
8725
spin_lock_irqsave(&priv->lock, flags);
8726
if (!(priv->measurement_status & MEASUREMENT_READY)) {
8727
spin_unlock_irqrestore(&priv->lock, flags);
8728
return 0;
8729
}
8730
memcpy(&measure_report, &priv->measure_report, size);
8731
priv->measurement_status = 0;
8732
spin_unlock_irqrestore(&priv->lock, flags);
8733
8734
while (size && (PAGE_SIZE - len)) {
8735
hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8736
PAGE_SIZE - len, 1);
8737
len = strlen(buf);
8738
if (PAGE_SIZE - len)
8739
buf[len++] = '\n';
8740
8741
ofs += 16;
8742
size -= min(size, 16U);
8743
}
8744
8745
return len;
8746
}
8747
8748
static ssize_t store_measurement(struct device *d,
8749
struct device_attribute *attr,
8750
const char *buf, size_t count)
8751
{
8752
struct iwl4965_priv *priv = dev_get_drvdata(d);
8753
struct ieee80211_measurement_params params = {
8754
.channel = le16_to_cpu(priv->active_rxon.channel),
8755
.start_time = cpu_to_le64(priv->last_tsf),
8756
.duration = cpu_to_le16(1),
8757
};
8758
u8 type = IWL_MEASURE_BASIC;
8759
u8 buffer[32];
8760
u8 channel;
8761
8762
if (count) {
8763
char *p = buffer;
8764
strncpy(buffer, buf, min(sizeof(buffer), count));
8765
channel = simple_strtoul(p, NULL, 0);
8766
if (channel)
8767
params.channel = channel;
8768
8769
p = buffer;
8770
while (*p && *p != ' ')
8771
p++;
8772
if (*p)
8773
type = simple_strtoul(p + 1, NULL, 0);
8774
}
8775
8776
IWL_DEBUG_INFO("Invoking measurement of type %d on "
8777
"channel %d (for '%s')\n", type, params.channel, buf);
8778
iwl4965_get_measurement(priv, ¶ms, type);
8779
8780
return count;
8781
}
8782
8783
static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
8784
show_measurement, store_measurement);
8785
#endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
8786
8787
static ssize_t store_retry_rate(struct device *d,
8788
struct device_attribute *attr,
8789
const char *buf, size_t count)
8790
{
8791
struct iwl4965_priv *priv = dev_get_drvdata(d);
8792
8793
priv->retry_rate = simple_strtoul(buf, NULL, 0);
8794
if (priv->retry_rate <= 0)
8795
priv->retry_rate = 1;
8796
8797
return count;
8798
}
8799
8800
static ssize_t show_retry_rate(struct device *d,
8801
struct device_attribute *attr, char *buf)
8802
{
8803
struct iwl4965_priv *priv = dev_get_drvdata(d);
8804
return sprintf(buf, "%d", priv->retry_rate);
8805
}
8806
8807
static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
8808
store_retry_rate);
8809
8810
static ssize_t store_power_level(struct device *d,
8811
struct device_attribute *attr,
8812
const char *buf, size_t count)
8813
{
8814
struct iwl4965_priv *priv = dev_get_drvdata(d);
8815
int rc;
8816
int mode;
8817
8818
mode = simple_strtoul(buf, NULL, 0);
8819
mutex_lock(&priv->mutex);
8820
8821
if (!iwl4965_is_ready(priv)) {
8822
rc = -EAGAIN;
8823
goto out;
8824
}
8825
8826
if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
8827
mode = IWL_POWER_AC;
8828
else
8829
mode |= IWL_POWER_ENABLED;
8830
8831
if (mode != priv->power_mode) {
8832
rc = iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(mode));
8833
if (rc) {
8834
IWL_DEBUG_MAC80211("failed setting power mode.\n");
8835
goto out;
8836
}
8837
priv->power_mode = mode;
8838
}
8839
8840
rc = count;
8841
8842
out:
8843
mutex_unlock(&priv->mutex);
8844
return rc;
8845
}
8846
8847
#define MAX_WX_STRING 80
8848
8849
/* Values are in microsecond */
8850
static const s32 timeout_duration[] = {
8851
350000,
8852
250000,
8853
75000,
8854
37000,
8855
25000,
8856
};
8857
static const s32 period_duration[] = {
8858
400000,
8859
700000,
8860
1000000,
8861
1000000,
8862
1000000
8863
};
8864
8865
static ssize_t show_power_level(struct device *d,
8866
struct device_attribute *attr, char *buf)
8867
{
8868
struct iwl4965_priv *priv = dev_get_drvdata(d);
8869
int level = IWL_POWER_LEVEL(priv->power_mode);
8870
char *p = buf;
8871
8872
p += sprintf(p, "%d ", level);
8873
switch (level) {
8874
case IWL_POWER_MODE_CAM:
8875
case IWL_POWER_AC:
8876
p += sprintf(p, "(AC)");
8877
break;
8878
case IWL_POWER_BATTERY:
8879
p += sprintf(p, "(BATTERY)");
8880
break;
8881
default:
8882
p += sprintf(p,
8883
"(Timeout %dms, Period %dms)",
8884
timeout_duration[level - 1] / 1000,
8885
period_duration[level - 1] / 1000);
8886
}
8887
8888
if (!(priv->power_mode & IWL_POWER_ENABLED))
8889
p += sprintf(p, " OFF\n");
8890
else
8891
p += sprintf(p, " \n");
8892
8893
return (p - buf + 1);
8894
8895
}
8896
8897
static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
8898
store_power_level);
8899
8900
static ssize_t show_channels(struct device *d,
8901
struct device_attribute *attr, char *buf)
8902
{
8903
struct iwl4965_priv *priv = dev_get_drvdata(d);
8904
int len = 0, i;
8905
struct ieee80211_channel *channels = NULL;
8906
const struct ieee80211_hw_mode *hw_mode = NULL;
8907
int count = 0;
8908
8909
if (!iwl4965_is_ready(priv))
8910
return -EAGAIN;
8911
8912
hw_mode = iwl4965_get_hw_mode(priv, MODE_IEEE80211G);
8913
if (!hw_mode)
8914
hw_mode = iwl4965_get_hw_mode(priv, MODE_IEEE80211B);
8915
if (hw_mode) {
8916
channels = hw_mode->channels;
8917
count = hw_mode->num_channels;
8918
}
8919
8920
len +=
8921
sprintf(&buf[len],
8922
"Displaying %d channels in 2.4GHz band "
8923
"(802.11bg):\n", count);
8924
8925
for (i = 0; i < count; i++)
8926
len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8927
channels[i].chan,
8928
channels[i].power_level,
8929
channels[i].
8930
flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8931
" (IEEE 802.11h required)" : "",
8932
(!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8933
|| (channels[i].
8934
flag &
8935
IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8936
", IBSS",
8937
channels[i].
8938
flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8939
"active/passive" : "passive only");
8940
8941
hw_mode = iwl4965_get_hw_mode(priv, MODE_IEEE80211A);
8942
if (hw_mode) {
8943
channels = hw_mode->channels;
8944
count = hw_mode->num_channels;
8945
} else {
8946
channels = NULL;
8947
count = 0;
8948
}
8949
8950
len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
8951
"(802.11a):\n", count);
8952
8953
for (i = 0; i < count; i++)
8954
len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8955
channels[i].chan,
8956
channels[i].power_level,
8957
channels[i].
8958
flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8959
" (IEEE 802.11h required)" : "",
8960
(!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8961
|| (channels[i].
8962
flag &
8963
IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8964
", IBSS",
8965
channels[i].
8966
flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8967
"active/passive" : "passive only");
8968
8969
return len;
8970
}
8971
8972
static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
8973
8974
static ssize_t show_statistics(struct device *d,
8975
struct device_attribute *attr, char *buf)
8976
{
8977
struct iwl4965_priv *priv = dev_get_drvdata(d);
8978
u32 size = sizeof(struct iwl4965_notif_statistics);
8979
u32 len = 0, ofs = 0;
8980
u8 *data = (u8 *) & priv->statistics;
8981
int rc = 0;
8982
8983
if (!iwl4965_is_alive(priv))
8984
return -EAGAIN;
8985
8986
mutex_lock(&priv->mutex);
8987
rc = iwl4965_send_statistics_request(priv);
8988
mutex_unlock(&priv->mutex);
8989
8990
if (rc) {
8991
len = sprintf(buf,
8992
"Error sending statistics request: 0x%08X\n", rc);
8993
return len;
8994
}
8995
8996
while (size && (PAGE_SIZE - len)) {
8997
hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8998
PAGE_SIZE - len, 1);
8999
len = strlen(buf);
9000
if (PAGE_SIZE - len)
9001
buf[len++] = '\n';
9002
9003
ofs += 16;
9004
size -= min(size, 16U);
9005
}
9006
9007
return len;
9008
}
9009
9010
static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
9011
9012
static ssize_t show_antenna(struct device *d,
9013
struct device_attribute *attr, char *buf)
9014
{
9015
struct iwl4965_priv *priv = dev_get_drvdata(d);
9016
9017
if (!iwl4965_is_alive(priv))
9018
return -EAGAIN;
9019
9020
return sprintf(buf, "%d\n", priv->antenna);
9021
}
9022
9023
static ssize_t store_antenna(struct device *d,
9024
struct device_attribute *attr,
9025
const char *buf, size_t count)
9026
{
9027
int ant;
9028
struct iwl4965_priv *priv = dev_get_drvdata(d);
9029
9030
if (count == 0)
9031
return 0;
9032
9033
if (sscanf(buf, "%1i", &ant) != 1) {
9034
IWL_DEBUG_INFO("not in hex or decimal form.\n");
9035
return count;
9036
}
9037
9038
if ((ant >= 0) && (ant <= 2)) {
9039
IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
9040
priv->antenna = (enum iwl4965_antenna)ant;
9041
} else
9042
IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
9043
9044
9045
return count;
9046
}
9047
9048
static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
9049
9050
static ssize_t show_status(struct device *d,
9051
struct device_attribute *attr, char *buf)
9052
{
9053
struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
9054
if (!iwl4965_is_alive(priv))
9055
return -EAGAIN;
9056
return sprintf(buf, "0x%08x\n", (int)priv->status);
9057
}
9058
9059
static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
9060
9061
static ssize_t dump_error_log(struct device *d,
9062
struct device_attribute *attr,
9063
const char *buf, size_t count)
9064
{
9065
char *p = (char *)buf;
9066
9067
if (p[0] == '1')
9068
iwl4965_dump_nic_error_log((struct iwl4965_priv *)d->driver_data);
9069
9070
return strnlen(buf, count);
9071
}
9072
9073
static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
9074
9075
static ssize_t dump_event_log(struct device *d,
9076
struct device_attribute *attr,
9077
const char *buf, size_t count)
9078
{
9079
char *p = (char *)buf;
9080
9081
if (p[0] == '1')
9082
iwl4965_dump_nic_event_log((struct iwl4965_priv *)d->driver_data);
9083
9084
return strnlen(buf, count);
9085
}
9086
9087
static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
9088
9089
/*****************************************************************************
9090
*
9091
* driver setup and teardown
9092
*
9093
*****************************************************************************/
9094
9095
static void iwl4965_setup_deferred_work(struct iwl4965_priv *priv)
9096
{
9097
priv->workqueue = create_workqueue(DRV_NAME);
9098
9099
init_waitqueue_head(&priv->wait_command_queue);
9100
9101
INIT_WORK(&priv->up, iwl4965_bg_up);
9102
INIT_WORK(&priv->restart, iwl4965_bg_restart);
9103
INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
9104
INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
9105
INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
9106
INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
9107
INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
9108
INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
9109
INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
9110
INIT_DELAYED_WORK(&priv->init_alive_start, iwl4965_bg_init_alive_start);
9111
INIT_DELAYED_WORK(&priv->alive_start, iwl4965_bg_alive_start);
9112
INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
9113
9114
iwl4965_hw_setup_deferred_work(priv);
9115
9116
tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
9117
iwl4965_irq_tasklet, (unsigned long)priv);
9118
}
9119
9120
#ifndef cancel_work_sync
9121
#define cancel_work_sync(x)
9122
#endif
9123
9124
static void iwl4965_cancel_deferred_work(struct iwl4965_priv *priv)
9125
{
9126
iwl4965_hw_cancel_deferred_work(priv);
9127
9128
cancel_delayed_work(&priv->init_alive_start);
9129
cancel_delayed_work(&priv->scan_check);
9130
cancel_delayed_work(&priv->alive_start);
9131
cancel_delayed_work(&priv->post_associate);
9132
cancel_work_sync(&priv->beacon_update);
9133
}
9134
9135
static struct attribute *iwl4965_sysfs_entries[] = {
9136
&dev_attr_antenna.attr,
9137
&dev_attr_channels.attr,
9138
&dev_attr_dump_errors.attr,
9139
&dev_attr_dump_events.attr,
9140
&dev_attr_flags.attr,
9141
&dev_attr_filter_flags.attr,
9142
#ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
9143
&dev_attr_measurement.attr,
9144
#endif
9145
&dev_attr_power_level.attr,
9146
&dev_attr_retry_rate.attr,
9147
&dev_attr_rf_kill.attr,
9148
&dev_attr_rs_window.attr,
9149
&dev_attr_statistics.attr,
9150
&dev_attr_status.attr,
9151
&dev_attr_temperature.attr,
9152
&dev_attr_tune.attr,
9153
&dev_attr_tx_power.attr,
9154
9155
NULL
9156
};
9157
9158
static struct attribute_group iwl4965_attribute_group = {
9159
.name = NULL, /* put in device directory */
9160
.attrs = iwl4965_sysfs_entries,
9161
};
9162
9163
static struct ieee80211_ops iwl4965_hw_ops = {
9164
.tx = iwl4965_mac_tx,
9165
.open = iwl4965_mac_open,
9166
.stop = iwl4965_mac_stop,
9167
.add_interface = iwl4965_mac_add_interface,
9168
.remove_interface = iwl4965_mac_remove_interface,
9169
.config = iwl4965_mac_config,
9170
.config_interface = iwl4965_mac_config_interface,
9171
.set_key = iwl4965_mac_set_key,
9172
.get_stats = iwl4965_mac_get_stats,
9173
.get_tx_stats = iwl4965_mac_get_tx_stats,
9174
.conf_tx = iwl4965_mac_conf_tx,
9175
.get_tsf = iwl4965_mac_get_tsf,
9176
.reset_tsf = iwl4965_mac_reset_tsf,
9177
.beacon_update = iwl4965_mac_beacon_update,
9178
#ifdef CONFIG_IWL4965_HT
9179
.conf_ht = iwl4965_mac_conf_ht,
9180
.get_ht_capab = iwl4965_mac_get_ht_capab,
9181
#ifdef CONFIG_IWL4965_HT_AGG
9182
.ht_tx_agg_start = iwl4965_mac_ht_tx_agg_start,
9183
.ht_tx_agg_stop = iwl4965_mac_ht_tx_agg_stop,
9184
.ht_rx_agg_start = iwl4965_mac_ht_rx_agg_start,
9185
.ht_rx_agg_stop = iwl4965_mac_ht_rx_agg_stop,
9186
#endif /* CONFIG_IWL4965_HT_AGG */
9187
#endif /* CONFIG_IWL4965_HT */
9188
.hw_scan = iwl4965_mac_hw_scan
9189
};
9190
9191
static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
9192
{
9193
int err = 0;
9194
struct iwl4965_priv *priv;
9195
struct ieee80211_hw *hw;
9196
int i;
9197
9198
/* Disabling hardware scan means that mac80211 will perform scans
9199
* "the hard way", rather than using device's scan. */
9200
if (iwl4965_param_disable_hw_scan) {
9201
IWL_DEBUG_INFO("Disabling hw_scan\n");
9202
iwl4965_hw_ops.hw_scan = NULL;
9203
}
9204
9205
if ((iwl4965_param_queues_num > IWL_MAX_NUM_QUEUES) ||
9206
(iwl4965_param_queues_num < IWL_MIN_NUM_QUEUES)) {
9207
IWL_ERROR("invalid queues_num, should be between %d and %d\n",
9208
IWL_MIN_NUM_QUEUES, IWL_MAX_NUM_QUEUES);
9209
err = -EINVAL;
9210
goto out;
9211
}
9212
9213
/* mac80211 allocates memory for this device instance, including
9214
* space for this driver's private structure */
9215
hw = iwlwifi_ieee80211_alloc_hw(sizeof(struct iwl4965_priv), &iwl4965_hw_ops);
9216
if (hw == NULL) {
9217
IWL_ERROR("Can not allocate network device\n");
9218
err = -ENOMEM;
9219
goto out;
9220
}
9221
SET_IEEE80211_DEV(hw, &pdev->dev);
9222
9223
IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
9224
priv = hw->priv;
9225
priv->hw = hw;
9226
9227
priv->pci_dev = pdev;
9228
priv->antenna = (enum iwl4965_antenna)iwl4965_param_antenna;
9229
#ifdef CONFIG_IWL4965_DEBUG
9230
iwl4965_debug_level = iwl4965_param_debug;
9231
atomic_set(&priv->restrict_refcnt, 0);
9232
#endif
9233
priv->retry_rate = 1;
9234
9235
priv->ibss_beacon = NULL;
9236
9237
/* Tell mac80211 and its clients (e.g. Wireless Extensions)
9238
* the range of signal quality values that we'll provide.
9239
* Negative values for level/noise indicate that we'll provide dBm.
9240
* For WE, at least, non-0 values here *enable* display of values
9241
* in app (iwconfig). */
9242
hw->max_rssi = -20; /* signal level, negative indicates dBm */
9243
hw->max_noise = -20; /* noise level, negative indicates dBm */
9244
hw->max_signal = 100; /* link quality indication (%) */
9245
9246
/* Tell mac80211 our Tx characteristics */
9247
hw->flags = IEEE80211_HW_WEP_INCLUDE_IV |
9248
IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE;
9249
9250
/* Default value; 4 EDCA QOS priorities */
9251
hw->queues = 4;
9252
#ifdef CONFIG_IWL4965_HT
9253
#ifdef CONFIG_IWL4965_HT_AGG
9254
/* Enhanced value; more queues, to support 11n aggregation */
9255
hw->queues = 16;
9256
#endif /* CONFIG_IWL4965_HT_AGG */
9257
#endif /* CONFIG_IWL4965_HT */
9258
9259
spin_lock_init(&priv->lock);
9260
spin_lock_init(&priv->power_data.lock);
9261
spin_lock_init(&priv->sta_lock);
9262
spin_lock_init(&priv->hcmd_lock);
9263
spin_lock_init(&priv->lq_mngr.lock);
9264
9265
for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++)
9266
INIT_LIST_HEAD(&priv->ibss_mac_hash[i]);
9267
9268
INIT_LIST_HEAD(&priv->free_frames);
9269
9270
mutex_init(&priv->mutex);
9271
if (pci_enable_device(pdev)) {
9272
err = -ENODEV;
9273
goto out_iwlwifi_ieee80211_free_hw;
9274
}
9275
9276
pci_set_master(pdev);
9277
9278
/* Clear the driver's (not device's) station table */
9279
iwl4965_clear_stations_table(priv);
9280
9281
priv->data_retry_limit = -1;
9282
priv->ieee_channels = NULL;
9283
priv->ieee_rates = NULL;
9284
priv->phymode = -1;
9285
9286
err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
9287
if (!err)
9288
err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
9289
if (err) {
9290
printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n");
9291
goto out_pci_disable_device;
9292
}
9293
9294
pci_set_drvdata(pdev, priv);
9295
err = pci_request_regions(pdev, DRV_NAME);
9296
if (err)
9297
goto out_pci_disable_device;
9298
9299
/* We disable the RETRY_TIMEOUT register (0x41) to keep
9300
* PCI Tx retries from interfering with C3 CPU state */
9301
pci_write_config_byte(pdev, 0x41, 0x00);
9302
9303
priv->hw_base = pci_iomap(pdev, 0, 0);
9304
if (!priv->hw_base) {
9305
err = -ENODEV;
9306
goto out_pci_release_regions;
9307
}
9308
9309
IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
9310
(unsigned long long) pci_resource_len(pdev, 0));
9311
IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
9312
9313
/* Initialize module parameter values here */
9314
9315
/* Disable radio (SW RF KILL) via parameter when loading driver */
9316
if (iwl4965_param_disable) {
9317
set_bit(STATUS_RF_KILL_SW, &priv->status);
9318
IWL_DEBUG_INFO("Radio disabled.\n");
9319
}
9320
9321
priv->iw_mode = IEEE80211_IF_TYPE_STA;
9322
9323
priv->ps_mode = 0;
9324
priv->use_ant_b_for_management_frame = 1; /* start with ant B */
9325
priv->is_ht_enabled = 1;
9326
priv->channel_width = IWL_CHANNEL_WIDTH_40MHZ;
9327
priv->valid_antenna = 0x7; /* assume all 3 connected */
9328
priv->ps_mode = IWL_MIMO_PS_NONE;
9329
9330
/* Choose which receivers/antennas to use */
9331
iwl4965_set_rxon_chain(priv);
9332
9333
printk(KERN_INFO DRV_NAME
9334
": Detected Intel Wireless WiFi Link 4965AGN\n");
9335
9336
/* Device-specific setup */
9337
if (iwl4965_hw_set_hw_setting(priv)) {
9338
IWL_ERROR("failed to set hw settings\n");
9339
goto out_iounmap;
9340
}
9341
9342
#ifdef CONFIG_IWL4965_QOS
9343
if (iwl4965_param_qos_enable)
9344
priv->qos_data.qos_enable = 1;
9345
9346
iwl4965_reset_qos(priv);
9347
9348
priv->qos_data.qos_active = 0;
9349
priv->qos_data.qos_cap.val = 0;
9350
#endif /* CONFIG_IWL4965_QOS */
9351
9352
iwl4965_set_rxon_channel(priv, MODE_IEEE80211G, 6);
9353
iwl4965_setup_deferred_work(priv);
9354
iwl4965_setup_rx_handlers(priv);
9355
9356
priv->rates_mask = IWL_RATES_MASK;
9357
/* If power management is turned on, default to AC mode */
9358
priv->power_mode = IWL_POWER_AC;
9359
priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
9360
9361
iwl4965_disable_interrupts(priv);
9362
9363
err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
9364
if (err) {
9365
IWL_ERROR("failed to create sysfs device attributes\n");
9366
goto out_release_irq;
9367
}
9368
9369
/* nic init */
9370
iwl4965_set_bit(priv, CSR_GIO_CHICKEN_BITS,
9371
CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
9372
9373
iwl4965_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
9374
err = iwl4965_poll_bit(priv, CSR_GP_CNTRL,
9375
CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
9376
CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
9377
if (err < 0) {
9378
IWL_DEBUG_INFO("Failed to init the card\n");
9379
goto out_remove_sysfs;
9380
}
9381
/* Read the EEPROM */
9382
err = iwl4965_eeprom_init(priv);
9383
if (err) {
9384
IWL_ERROR("Unable to init EEPROM\n");
9385
goto out_remove_sysfs;
9386
}
9387
/* MAC Address location in EEPROM same for 3945/4965 */
9388
get_eeprom_mac(priv, priv->mac_addr);
9389
IWL_DEBUG_INFO("MAC address: " MAC_FMT "\n", MAC_ARG(priv->mac_addr));
9390
SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
9391
9392
iwl4965_rate_control_register(priv->hw);
9393
err = iwlwifi_ieee80211_register_hw(priv->hw);
9394
if (err) {
9395
IWL_ERROR("Failed to register network device (error %d)\n", err);
9396
goto out_remove_sysfs;
9397
}
9398
9399
priv->hw->conf.beacon_int = 100;
9400
priv->mac80211_registered = 1;
9401
pci_save_state(pdev);
9402
pci_disable_device(pdev);
9403
9404
return 0;
9405
9406
out_remove_sysfs:
9407
iwl4965_rate_control_unregister(priv->hw);
9408
sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
9409
9410
out_release_irq:
9411
destroy_workqueue(priv->workqueue);
9412
priv->workqueue = NULL;
9413
iwl4965_unset_hw_setting(priv);
9414
9415
out_iounmap:
9416
pci_iounmap(pdev, priv->hw_base);
9417
out_pci_release_regions:
9418
pci_release_regions(pdev);
9419
out_pci_disable_device:
9420
pci_disable_device(pdev);
9421
pci_set_drvdata(pdev, NULL);
9422
out_iwlwifi_ieee80211_free_hw:
9423
iwlwifi_ieee80211_free_hw(priv->hw);
9424
out:
9425
return err;
9426
}
9427
9428
static void iwl4965_pci_remove(struct pci_dev *pdev)
9429
{
9430
struct iwl4965_priv *priv = pci_get_drvdata(pdev);
9431
struct list_head *p, *q;
9432
int i;
9433
9434
if (!priv)
9435
return;
9436
9437
IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
9438
9439
set_bit(STATUS_EXIT_PENDING, &priv->status);
9440
9441
iwl4965_down(priv);
9442
9443
/* Free MAC hash list for ADHOC */
9444
for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
9445
list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
9446
list_del(p);
9447
kfree(list_entry(p, struct iwl4965_ibss_seq, list));
9448
}
9449
}
9450
9451
sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
9452
9453
iwl4965_dealloc_ucode_pci(priv);
9454
9455
if (priv->rxq.bd)
9456
iwl4965_rx_queue_free(priv, &priv->rxq);
9457
iwl4965_hw_txq_ctx_free(priv);
9458
9459
iwl4965_unset_hw_setting(priv);
9460
iwl4965_clear_stations_table(priv);
9461
9462
if (priv->mac80211_registered) {
9463
iwlwifi_ieee80211_unregister_hw(priv->hw);
9464
iwl4965_rate_control_unregister(priv->hw);
9465
}
9466
9467
/*netif_stop_queue(dev); */
9468
flush_workqueue(priv->workqueue);
9469
9470
/* iwlwifi_ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
9471
* priv->workqueue... so we can't take down the workqueue
9472
* until now... */
9473
destroy_workqueue(priv->workqueue);
9474
priv->workqueue = NULL;
9475
9476
pci_iounmap(pdev, priv->hw_base);
9477
pci_release_regions(pdev);
9478
pci_disable_device(pdev);
9479
pci_set_drvdata(pdev, NULL);
9480
9481
kfree(priv->channel_info);
9482
9483
kfree(priv->ieee_channels);
9484
kfree(priv->ieee_rates);
9485
9486
if (priv->ibss_beacon)
9487
dev_kfree_skb(priv->ibss_beacon);
9488
9489
iwlwifi_ieee80211_free_hw(priv->hw);
9490
}
9491
9492
#ifdef CONFIG_PM
9493
9494
static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
9495
{
9496
struct iwl4965_priv *priv = pci_get_drvdata(pdev);
9497
9498
if (priv->is_open) {
9499
set_bit(STATUS_IN_SUSPEND, &priv->status);
9500
iwl4965_mac_stop(priv->hw);
9501
priv->is_open = 1;
9502
}
9503
9504
pci_set_power_state(pdev, PCI_D3hot);
9505
9506
return 0;
9507
}
9508
9509
static int iwl4965_pci_resume(struct pci_dev *pdev)
9510
{
9511
struct iwl4965_priv *priv = pci_get_drvdata(pdev);
9512
9513
pci_set_power_state(pdev, PCI_D0);
9514
9515
if (priv->is_open)
9516
iwl4965_mac_open(priv->hw);
9517
9518
clear_bit(STATUS_IN_SUSPEND, &priv->status);
9519
return 0;
9520
}
9521
9522
#endif /* CONFIG_PM */
9523
9524
/*****************************************************************************
9525
*
9526
* driver and module entry point
9527
*
9528
*****************************************************************************/
9529
9530
static struct pci_driver iwl4965_driver = {
9531
.name = DRV_NAME,
9532
.id_table = iwl4965_hw_card_ids,
9533
.probe = iwl4965_pci_probe,
9534
.remove = __devexit_p(iwl4965_pci_remove),
9535
#ifdef CONFIG_PM
9536
.suspend = iwl4965_pci_suspend,
9537
.resume = iwl4965_pci_resume,
9538
#endif
9539
};
9540
9541
static int __init iwl4965_init(void)
9542
{
9543
9544
int ret;
9545
printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
9546
printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
9547
ret = pci_register_driver(&iwl4965_driver);
9548
if (ret) {
9549
IWL_ERROR("Unable to initialize PCI module\n");
9550
return ret;
9551
}
9552
#ifdef CONFIG_IWL4965_DEBUG
9553
ret = driver_create_file(&iwl4965_driver.driver, &driver_attr_debug_level);
9554
if (ret) {
9555
IWL_ERROR("Unable to create driver sysfs file\n");
9556
pci_unregister_driver(&iwl4965_driver);
9557
return ret;
9558
}
9559
#endif
9560
9561
return ret;
9562
}
9563
9564
static void __exit iwl4965_exit(void)
9565
{
9566
#ifdef CONFIG_IWL4965_DEBUG
9567
driver_remove_file(&iwl4965_driver.driver, &driver_attr_debug_level);
9568
#endif
9569
pci_unregister_driver(&iwl4965_driver);
9570
}
9571
9572
module_param_named(antenna, iwl4965_param_antenna, int, 0444);
9573
MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
9574
module_param_named(disable, iwl4965_param_disable, int, 0444);
9575
MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
9576
module_param_named(hwcrypto, iwl4965_param_hwcrypto, int, 0444);
9577
MODULE_PARM_DESC(hwcrypto,
9578
"using hardware crypto engine (default 0 [software])\n");
9579
module_param_named(debug, iwl4965_param_debug, int, 0444);
9580
MODULE_PARM_DESC(debug, "debug output mask");
9581
module_param_named(disable_hw_scan, iwl4965_param_disable_hw_scan, int, 0444);
9582
MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
9583
9584
module_param_named(queues_num, iwl4965_param_queues_num, int, 0444);
9585
MODULE_PARM_DESC(queues_num, "number of hw queues.");
9586
9587
/* QoS */
9588
module_param_named(qos_enable, iwl4965_param_qos_enable, int, 0444);
9589
MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
9590
9591
module_exit(iwl4965_exit);
9592
module_init(iwl4965_init);
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Version: 2.0.1