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26#include <linux/debugfs.h>
27#include <linux/kernel.h>
28#include <linux/module.h>
29#include <linux/poll.h>
30#include <linux/sched.h>
31#include <linux/slab.h>
32#include <linux/uaccess.h>
33
34#include "rt2x00.h"
35#include "rt2x00lib.h"
36#include "rt2x00dump.h"
37
38#define MAX_LINE_LENGTH 64
39
40struct rt2x00debug_crypto {
41 unsigned long success;
42 unsigned long icv_error;
43 unsigned long mic_error;
44 unsigned long key_error;
45};
46
47struct rt2x00debug_intf {
48
49
50
51
52 struct rt2x00_dev *rt2x00dev;
53
54
55
56
57
58
59 const struct rt2x00debug *debug;
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79 struct dentry *driver_folder;
80 struct dentry *driver_entry;
81 struct dentry *chipset_entry;
82 struct dentry *dev_flags;
83 struct dentry *cap_flags;
84 struct dentry *register_folder;
85 struct dentry *csr_off_entry;
86 struct dentry *csr_val_entry;
87 struct dentry *eeprom_off_entry;
88 struct dentry *eeprom_val_entry;
89 struct dentry *bbp_off_entry;
90 struct dentry *bbp_val_entry;
91 struct dentry *rf_off_entry;
92 struct dentry *rf_val_entry;
93 struct dentry *rfcsr_off_entry;
94 struct dentry *rfcsr_val_entry;
95 struct dentry *queue_folder;
96 struct dentry *queue_frame_dump_entry;
97 struct dentry *queue_stats_entry;
98 struct dentry *crypto_stats_entry;
99
100
101
102
103
104 unsigned long frame_dump_flags;
105#define FRAME_DUMP_FILE_OPEN 1
106
107
108
109
110
111
112
113 struct sk_buff_head frame_dump_skbqueue;
114 wait_queue_head_t frame_dump_waitqueue;
115
116
117
118
119
120 struct rt2x00debug_crypto crypto_stats[CIPHER_MAX];
121
122
123
124
125
126
127 struct debugfs_blob_wrapper driver_blob;
128 struct debugfs_blob_wrapper chipset_blob;
129
130
131
132
133 unsigned int offset_csr;
134 unsigned int offset_eeprom;
135 unsigned int offset_bbp;
136 unsigned int offset_rf;
137 unsigned int offset_rfcsr;
138};
139
140void rt2x00debug_update_crypto(struct rt2x00_dev *rt2x00dev,
141 struct rxdone_entry_desc *rxdesc)
142{
143 struct rt2x00debug_intf *intf = rt2x00dev->debugfs_intf;
144 enum cipher cipher = rxdesc->cipher;
145 enum rx_crypto status = rxdesc->cipher_status;
146
147 if (cipher == CIPHER_TKIP_NO_MIC)
148 cipher = CIPHER_TKIP;
149 if (cipher == CIPHER_NONE || cipher >= CIPHER_MAX)
150 return;
151
152
153 cipher--;
154
155 intf->crypto_stats[cipher].success += (status == RX_CRYPTO_SUCCESS);
156 intf->crypto_stats[cipher].icv_error += (status == RX_CRYPTO_FAIL_ICV);
157 intf->crypto_stats[cipher].mic_error += (status == RX_CRYPTO_FAIL_MIC);
158 intf->crypto_stats[cipher].key_error += (status == RX_CRYPTO_FAIL_KEY);
159}
160
161void rt2x00debug_dump_frame(struct rt2x00_dev *rt2x00dev,
162 enum rt2x00_dump_type type, struct sk_buff *skb)
163{
164 struct rt2x00debug_intf *intf = rt2x00dev->debugfs_intf;
165 struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb);
166 struct sk_buff *skbcopy;
167 struct rt2x00dump_hdr *dump_hdr;
168 struct timeval timestamp;
169 u32 data_len;
170
171 if (likely(!test_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags)))
172 return;
173
174 do_gettimeofday(×tamp);
175
176 if (skb_queue_len(&intf->frame_dump_skbqueue) > 20) {
177 DEBUG(rt2x00dev, "txrx dump queue length exceeded.\n");
178 return;
179 }
180
181 data_len = skb->len;
182 if (skbdesc->flags & SKBDESC_DESC_IN_SKB)
183 data_len -= skbdesc->desc_len;
184
185 skbcopy = alloc_skb(sizeof(*dump_hdr) + skbdesc->desc_len + data_len,
186 GFP_ATOMIC);
187 if (!skbcopy) {
188 DEBUG(rt2x00dev, "Failed to copy skb for dump.\n");
189 return;
190 }
191
192 dump_hdr = (struct rt2x00dump_hdr *)skb_put(skbcopy, sizeof(*dump_hdr));
193 dump_hdr->version = cpu_to_le32(DUMP_HEADER_VERSION);
194 dump_hdr->header_length = cpu_to_le32(sizeof(*dump_hdr));
195 dump_hdr->desc_length = cpu_to_le32(skbdesc->desc_len);
196 dump_hdr->data_length = cpu_to_le32(data_len);
197 dump_hdr->chip_rt = cpu_to_le16(rt2x00dev->chip.rt);
198 dump_hdr->chip_rf = cpu_to_le16(rt2x00dev->chip.rf);
199 dump_hdr->chip_rev = cpu_to_le16(rt2x00dev->chip.rev);
200 dump_hdr->type = cpu_to_le16(type);
201 dump_hdr->queue_index = skbdesc->entry->queue->qid;
202 dump_hdr->entry_index = skbdesc->entry->entry_idx;
203 dump_hdr->timestamp_sec = cpu_to_le32(timestamp.tv_sec);
204 dump_hdr->timestamp_usec = cpu_to_le32(timestamp.tv_usec);
205
206 if (!(skbdesc->flags & SKBDESC_DESC_IN_SKB))
207 memcpy(skb_put(skbcopy, skbdesc->desc_len), skbdesc->desc,
208 skbdesc->desc_len);
209 memcpy(skb_put(skbcopy, skb->len), skb->data, skb->len);
210
211 skb_queue_tail(&intf->frame_dump_skbqueue, skbcopy);
212 wake_up_interruptible(&intf->frame_dump_waitqueue);
213
214
215
216
217 if (!test_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags))
218 skb_queue_purge(&intf->frame_dump_skbqueue);
219}
220EXPORT_SYMBOL_GPL(rt2x00debug_dump_frame);
221
222static int rt2x00debug_file_open(struct inode *inode, struct file *file)
223{
224 struct rt2x00debug_intf *intf = inode->i_private;
225
226 file->private_data = inode->i_private;
227
228 if (!try_module_get(intf->debug->owner))
229 return -EBUSY;
230
231 return 0;
232}
233
234static int rt2x00debug_file_release(struct inode *inode, struct file *file)
235{
236 struct rt2x00debug_intf *intf = file->private_data;
237
238 module_put(intf->debug->owner);
239
240 return 0;
241}
242
243static int rt2x00debug_open_queue_dump(struct inode *inode, struct file *file)
244{
245 struct rt2x00debug_intf *intf = inode->i_private;
246 int retval;
247
248 retval = rt2x00debug_file_open(inode, file);
249 if (retval)
250 return retval;
251
252 if (test_and_set_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags)) {
253 rt2x00debug_file_release(inode, file);
254 return -EBUSY;
255 }
256
257 return 0;
258}
259
260static int rt2x00debug_release_queue_dump(struct inode *inode, struct file *file)
261{
262 struct rt2x00debug_intf *intf = inode->i_private;
263
264 skb_queue_purge(&intf->frame_dump_skbqueue);
265
266 clear_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags);
267
268 return rt2x00debug_file_release(inode, file);
269}
270
271static ssize_t rt2x00debug_read_queue_dump(struct file *file,
272 char __user *buf,
273 size_t length,
274 loff_t *offset)
275{
276 struct rt2x00debug_intf *intf = file->private_data;
277 struct sk_buff *skb;
278 size_t status;
279 int retval;
280
281 if (file->f_flags & O_NONBLOCK)
282 return -EAGAIN;
283
284 retval =
285 wait_event_interruptible(intf->frame_dump_waitqueue,
286 (skb =
287 skb_dequeue(&intf->frame_dump_skbqueue)));
288 if (retval)
289 return retval;
290
291 status = min((size_t)skb->len, length);
292 if (copy_to_user(buf, skb->data, status)) {
293 status = -EFAULT;
294 goto exit;
295 }
296
297 *offset += status;
298
299exit:
300 kfree_skb(skb);
301
302 return status;
303}
304
305static unsigned int rt2x00debug_poll_queue_dump(struct file *file,
306 poll_table *wait)
307{
308 struct rt2x00debug_intf *intf = file->private_data;
309
310 poll_wait(file, &intf->frame_dump_waitqueue, wait);
311
312 if (!skb_queue_empty(&intf->frame_dump_skbqueue))
313 return POLLOUT | POLLWRNORM;
314
315 return 0;
316}
317
318static const struct file_operations rt2x00debug_fop_queue_dump = {
319 .owner = THIS_MODULE,
320 .read = rt2x00debug_read_queue_dump,
321 .poll = rt2x00debug_poll_queue_dump,
322 .open = rt2x00debug_open_queue_dump,
323 .release = rt2x00debug_release_queue_dump,
324 .llseek = default_llseek,
325};
326
327static ssize_t rt2x00debug_read_queue_stats(struct file *file,
328 char __user *buf,
329 size_t length,
330 loff_t *offset)
331{
332 struct rt2x00debug_intf *intf = file->private_data;
333 struct data_queue *queue;
334 unsigned long irqflags;
335 unsigned int lines = 1 + intf->rt2x00dev->data_queues;
336 size_t size;
337 char *data;
338 char *temp;
339
340 if (*offset)
341 return 0;
342
343 data = kcalloc(lines, MAX_LINE_LENGTH, GFP_KERNEL);
344 if (!data)
345 return -ENOMEM;
346
347 temp = data +
348 sprintf(data, "qid\tflags\t\tcount\tlimit\tlength\tindex\tdma done\tdone\n");
349
350 queue_for_each(intf->rt2x00dev, queue) {
351 spin_lock_irqsave(&queue->index_lock, irqflags);
352
353 temp += sprintf(temp, "%d\t0x%.8x\t%d\t%d\t%d\t%d\t%d\t\t%d\n",
354 queue->qid, (unsigned int)queue->flags,
355 queue->count, queue->limit, queue->length,
356 queue->index[Q_INDEX],
357 queue->index[Q_INDEX_DMA_DONE],
358 queue->index[Q_INDEX_DONE]);
359
360 spin_unlock_irqrestore(&queue->index_lock, irqflags);
361 }
362
363 size = strlen(data);
364 size = min(size, length);
365
366 if (copy_to_user(buf, data, size)) {
367 kfree(data);
368 return -EFAULT;
369 }
370
371 kfree(data);
372
373 *offset += size;
374 return size;
375}
376
377static const struct file_operations rt2x00debug_fop_queue_stats = {
378 .owner = THIS_MODULE,
379 .read = rt2x00debug_read_queue_stats,
380 .open = rt2x00debug_file_open,
381 .release = rt2x00debug_file_release,
382 .llseek = default_llseek,
383};
384
385#ifdef CONFIG_RT2X00_LIB_CRYPTO
386static ssize_t rt2x00debug_read_crypto_stats(struct file *file,
387 char __user *buf,
388 size_t length,
389 loff_t *offset)
390{
391 struct rt2x00debug_intf *intf = file->private_data;
392 static const char * const name[] = { "WEP64", "WEP128", "TKIP", "AES" };
393 char *data;
394 char *temp;
395 size_t size;
396 unsigned int i;
397
398 if (*offset)
399 return 0;
400
401 data = kzalloc((1 + CIPHER_MAX) * MAX_LINE_LENGTH, GFP_KERNEL);
402 if (!data)
403 return -ENOMEM;
404
405 temp = data;
406 temp += sprintf(data, "cipher\tsuccess\ticv err\tmic err\tkey err\n");
407
408 for (i = 0; i < CIPHER_MAX; i++) {
409 temp += sprintf(temp, "%s\t%lu\t%lu\t%lu\t%lu\n", name[i],
410 intf->crypto_stats[i].success,
411 intf->crypto_stats[i].icv_error,
412 intf->crypto_stats[i].mic_error,
413 intf->crypto_stats[i].key_error);
414 }
415
416 size = strlen(data);
417 size = min(size, length);
418
419 if (copy_to_user(buf, data, size)) {
420 kfree(data);
421 return -EFAULT;
422 }
423
424 kfree(data);
425
426 *offset += size;
427 return size;
428}
429
430static const struct file_operations rt2x00debug_fop_crypto_stats = {
431 .owner = THIS_MODULE,
432 .read = rt2x00debug_read_crypto_stats,
433 .open = rt2x00debug_file_open,
434 .release = rt2x00debug_file_release,
435 .llseek = default_llseek,
436};
437#endif
438
439#define RT2X00DEBUGFS_OPS_READ(__name, __format, __type) \
440static ssize_t rt2x00debug_read_##__name(struct file *file, \
441 char __user *buf, \
442 size_t length, \
443 loff_t *offset) \
444{ \
445 struct rt2x00debug_intf *intf = file->private_data; \
446 const struct rt2x00debug *debug = intf->debug; \
447 char line[16]; \
448 size_t size; \
449 unsigned int index = intf->offset_##__name; \
450 __type value; \
451 \
452 if (*offset) \
453 return 0; \
454 \
455 if (index >= debug->__name.word_count) \
456 return -EINVAL; \
457 \
458 index += (debug->__name.word_base / \
459 debug->__name.word_size); \
460 \
461 if (debug->__name.flags & RT2X00DEBUGFS_OFFSET) \
462 index *= debug->__name.word_size; \
463 \
464 debug->__name.read(intf->rt2x00dev, index, &value); \
465 \
466 size = sprintf(line, __format, value); \
467 \
468 if (copy_to_user(buf, line, size)) \
469 return -EFAULT; \
470 \
471 *offset += size; \
472 return size; \
473}
474
475#define RT2X00DEBUGFS_OPS_WRITE(__name, __type) \
476static ssize_t rt2x00debug_write_##__name(struct file *file, \
477 const char __user *buf,\
478 size_t length, \
479 loff_t *offset) \
480{ \
481 struct rt2x00debug_intf *intf = file->private_data; \
482 const struct rt2x00debug *debug = intf->debug; \
483 char line[16]; \
484 size_t size; \
485 unsigned int index = intf->offset_##__name; \
486 __type value; \
487 \
488 if (*offset) \
489 return 0; \
490 \
491 if (index >= debug->__name.word_count) \
492 return -EINVAL; \
493 \
494 if (length > sizeof(line)) \
495 return -EINVAL; \
496 \
497 if (copy_from_user(line, buf, length)) \
498 return -EFAULT; \
499 \
500 size = strlen(line); \
501 value = simple_strtoul(line, NULL, 0); \
502 \
503 index += (debug->__name.word_base / \
504 debug->__name.word_size); \
505 \
506 if (debug->__name.flags & RT2X00DEBUGFS_OFFSET) \
507 index *= debug->__name.word_size; \
508 \
509 debug->__name.write(intf->rt2x00dev, index, value); \
510 \
511 *offset += size; \
512 return size; \
513}
514
515#define RT2X00DEBUGFS_OPS(__name, __format, __type) \
516RT2X00DEBUGFS_OPS_READ(__name, __format, __type); \
517RT2X00DEBUGFS_OPS_WRITE(__name, __type); \
518 \
519static const struct file_operations rt2x00debug_fop_##__name = {\
520 .owner = THIS_MODULE, \
521 .read = rt2x00debug_read_##__name, \
522 .write = rt2x00debug_write_##__name, \
523 .open = rt2x00debug_file_open, \
524 .release = rt2x00debug_file_release, \
525 .llseek = generic_file_llseek, \
526};
527
528RT2X00DEBUGFS_OPS(csr, "0x%.8x\n", u32);
529RT2X00DEBUGFS_OPS(eeprom, "0x%.4x\n", u16);
530RT2X00DEBUGFS_OPS(bbp, "0x%.2x\n", u8);
531RT2X00DEBUGFS_OPS(rf, "0x%.8x\n", u32);
532RT2X00DEBUGFS_OPS(rfcsr, "0x%.2x\n", u8);
533
534static ssize_t rt2x00debug_read_dev_flags(struct file *file,
535 char __user *buf,
536 size_t length,
537 loff_t *offset)
538{
539 struct rt2x00debug_intf *intf = file->private_data;
540 char line[16];
541 size_t size;
542
543 if (*offset)
544 return 0;
545
546 size = sprintf(line, "0x%.8x\n", (unsigned int)intf->rt2x00dev->flags);
547
548 if (copy_to_user(buf, line, size))
549 return -EFAULT;
550
551 *offset += size;
552 return size;
553}
554
555static const struct file_operations rt2x00debug_fop_dev_flags = {
556 .owner = THIS_MODULE,
557 .read = rt2x00debug_read_dev_flags,
558 .open = rt2x00debug_file_open,
559 .release = rt2x00debug_file_release,
560 .llseek = default_llseek,
561};
562
563static ssize_t rt2x00debug_read_cap_flags(struct file *file,
564 char __user *buf,
565 size_t length,
566 loff_t *offset)
567{
568 struct rt2x00debug_intf *intf = file->private_data;
569 char line[16];
570 size_t size;
571
572 if (*offset)
573 return 0;
574
575 size = sprintf(line, "0x%.8x\n", (unsigned int)intf->rt2x00dev->cap_flags);
576
577 if (copy_to_user(buf, line, size))
578 return -EFAULT;
579
580 *offset += size;
581 return size;
582}
583
584static const struct file_operations rt2x00debug_fop_cap_flags = {
585 .owner = THIS_MODULE,
586 .read = rt2x00debug_read_cap_flags,
587 .open = rt2x00debug_file_open,
588 .release = rt2x00debug_file_release,
589 .llseek = default_llseek,
590};
591
592static struct dentry *rt2x00debug_create_file_driver(const char *name,
593 struct rt2x00debug_intf
594 *intf,
595 struct debugfs_blob_wrapper
596 *blob)
597{
598 char *data;
599
600 data = kzalloc(3 * MAX_LINE_LENGTH, GFP_KERNEL);
601 if (!data)
602 return NULL;
603
604 blob->data = data;
605 data += sprintf(data, "driver:\t%s\n", intf->rt2x00dev->ops->name);
606 data += sprintf(data, "version:\t%s\n", DRV_VERSION);
607 blob->size = strlen(blob->data);
608
609 return debugfs_create_blob(name, S_IRUSR, intf->driver_folder, blob);
610}
611
612static struct dentry *rt2x00debug_create_file_chipset(const char *name,
613 struct rt2x00debug_intf
614 *intf,
615 struct
616 debugfs_blob_wrapper
617 *blob)
618{
619 const struct rt2x00debug *debug = intf->debug;
620 char *data;
621
622 data = kzalloc(9 * MAX_LINE_LENGTH, GFP_KERNEL);
623 if (!data)
624 return NULL;
625
626 blob->data = data;
627 data += sprintf(data, "rt chip:\t%04x\n", intf->rt2x00dev->chip.rt);
628 data += sprintf(data, "rf chip:\t%04x\n", intf->rt2x00dev->chip.rf);
629 data += sprintf(data, "revision:\t%04x\n", intf->rt2x00dev->chip.rev);
630 data += sprintf(data, "\n");
631 data += sprintf(data, "register\tbase\twords\twordsize\n");
632#define RT2X00DEBUGFS_SPRINTF_REGISTER(__name) \
633{ \
634 if(debug->__name.read) \
635 data += sprintf(data, __stringify(__name) \
636 "\t%d\t%d\t%d\n", \
637 debug->__name.word_base, \
638 debug->__name.word_count, \
639 debug->__name.word_size); \
640}
641 RT2X00DEBUGFS_SPRINTF_REGISTER(csr);
642 RT2X00DEBUGFS_SPRINTF_REGISTER(eeprom);
643 RT2X00DEBUGFS_SPRINTF_REGISTER(bbp);
644 RT2X00DEBUGFS_SPRINTF_REGISTER(rf);
645 RT2X00DEBUGFS_SPRINTF_REGISTER(rfcsr);
646#undef RT2X00DEBUGFS_SPRINTF_REGISTER
647
648 blob->size = strlen(blob->data);
649
650 return debugfs_create_blob(name, S_IRUSR, intf->driver_folder, blob);
651}
652
653void rt2x00debug_register(struct rt2x00_dev *rt2x00dev)
654{
655 const struct rt2x00debug *debug = rt2x00dev->ops->debugfs;
656 struct rt2x00debug_intf *intf;
657
658 intf = kzalloc(sizeof(struct rt2x00debug_intf), GFP_KERNEL);
659 if (!intf) {
660 ERROR(rt2x00dev, "Failed to allocate debug handler.\n");
661 return;
662 }
663
664 intf->debug = debug;
665 intf->rt2x00dev = rt2x00dev;
666 rt2x00dev->debugfs_intf = intf;
667
668 intf->driver_folder =
669 debugfs_create_dir(intf->rt2x00dev->ops->name,
670 rt2x00dev->hw->wiphy->debugfsdir);
671 if (IS_ERR(intf->driver_folder) || !intf->driver_folder)
672 goto exit;
673
674 intf->driver_entry =
675 rt2x00debug_create_file_driver("driver", intf, &intf->driver_blob);
676 if (IS_ERR(intf->driver_entry) || !intf->driver_entry)
677 goto exit;
678
679 intf->chipset_entry =
680 rt2x00debug_create_file_chipset("chipset",
681 intf, &intf->chipset_blob);
682 if (IS_ERR(intf->chipset_entry) || !intf->chipset_entry)
683 goto exit;
684
685 intf->dev_flags = debugfs_create_file("dev_flags", S_IRUSR,
686 intf->driver_folder, intf,
687 &rt2x00debug_fop_dev_flags);
688 if (IS_ERR(intf->dev_flags) || !intf->dev_flags)
689 goto exit;
690
691 intf->cap_flags = debugfs_create_file("cap_flags", S_IRUSR,
692 intf->driver_folder, intf,
693 &rt2x00debug_fop_cap_flags);
694 if (IS_ERR(intf->cap_flags) || !intf->cap_flags)
695 goto exit;
696
697 intf->register_folder =
698 debugfs_create_dir("register", intf->driver_folder);
699 if (IS_ERR(intf->register_folder) || !intf->register_folder)
700 goto exit;
701
702#define RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(__intf, __name) \
703({ \
704 if(debug->__name.read) { \
705 (__intf)->__name##_off_entry = \
706 debugfs_create_u32(__stringify(__name) "_offset", \
707 S_IRUSR | S_IWUSR, \
708 (__intf)->register_folder, \
709 &(__intf)->offset_##__name); \
710 if (IS_ERR((__intf)->__name##_off_entry) \
711 || !(__intf)->__name##_off_entry) \
712 goto exit; \
713 \
714 (__intf)->__name##_val_entry = \
715 debugfs_create_file(__stringify(__name) "_value", \
716 S_IRUSR | S_IWUSR, \
717 (__intf)->register_folder, \
718 (__intf), &rt2x00debug_fop_##__name); \
719 if (IS_ERR((__intf)->__name##_val_entry) \
720 || !(__intf)->__name##_val_entry) \
721 goto exit; \
722 } \
723})
724
725 RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, csr);
726 RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, eeprom);
727 RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, bbp);
728 RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, rf);
729 RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, rfcsr);
730
731#undef RT2X00DEBUGFS_CREATE_REGISTER_ENTRY
732
733 intf->queue_folder =
734 debugfs_create_dir("queue", intf->driver_folder);
735 if (IS_ERR(intf->queue_folder) || !intf->queue_folder)
736 goto exit;
737
738 intf->queue_frame_dump_entry =
739 debugfs_create_file("dump", S_IRUSR, intf->queue_folder,
740 intf, &rt2x00debug_fop_queue_dump);
741 if (IS_ERR(intf->queue_frame_dump_entry)
742 || !intf->queue_frame_dump_entry)
743 goto exit;
744
745 skb_queue_head_init(&intf->frame_dump_skbqueue);
746 init_waitqueue_head(&intf->frame_dump_waitqueue);
747
748 intf->queue_stats_entry =
749 debugfs_create_file("queue", S_IRUSR, intf->queue_folder,
750 intf, &rt2x00debug_fop_queue_stats);
751
752#ifdef CONFIG_RT2X00_LIB_CRYPTO
753 if (test_bit(CAPABILITY_HW_CRYPTO, &rt2x00dev->cap_flags))
754 intf->crypto_stats_entry =
755 debugfs_create_file("crypto", S_IRUGO, intf->queue_folder,
756 intf, &rt2x00debug_fop_crypto_stats);
757#endif
758
759 return;
760
761exit:
762 rt2x00debug_deregister(rt2x00dev);
763 ERROR(rt2x00dev, "Failed to register debug handler.\n");
764}
765
766void rt2x00debug_deregister(struct rt2x00_dev *rt2x00dev)
767{
768 struct rt2x00debug_intf *intf = rt2x00dev->debugfs_intf;
769
770 if (unlikely(!intf))
771 return;
772
773 skb_queue_purge(&intf->frame_dump_skbqueue);
774
775#ifdef CONFIG_RT2X00_LIB_CRYPTO
776 debugfs_remove(intf->crypto_stats_entry);
777#endif
778 debugfs_remove(intf->queue_stats_entry);
779 debugfs_remove(intf->queue_frame_dump_entry);
780 debugfs_remove(intf->queue_folder);
781 debugfs_remove(intf->rfcsr_val_entry);
782 debugfs_remove(intf->rfcsr_off_entry);
783 debugfs_remove(intf->rf_val_entry);
784 debugfs_remove(intf->rf_off_entry);
785 debugfs_remove(intf->bbp_val_entry);
786 debugfs_remove(intf->bbp_off_entry);
787 debugfs_remove(intf->eeprom_val_entry);
788 debugfs_remove(intf->eeprom_off_entry);
789 debugfs_remove(intf->csr_val_entry);
790 debugfs_remove(intf->csr_off_entry);
791 debugfs_remove(intf->register_folder);
792 debugfs_remove(intf->dev_flags);
793 debugfs_remove(intf->cap_flags);
794 debugfs_remove(intf->chipset_entry);
795 debugfs_remove(intf->driver_entry);
796 debugfs_remove(intf->driver_folder);
797 kfree(intf->chipset_blob.data);
798 kfree(intf->driver_blob.data);
799 kfree(intf);
800
801 rt2x00dev->debugfs_intf = NULL;
802}
803
