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24#include <linux/debugfs.h>
25#include <linux/kernel.h>
26#include <linux/module.h>
27#include <linux/poll.h>
28#include <linux/sched.h>
29#include <linux/slab.h>
30#include <linux/uaccess.h>
31
32#include "rt2x00.h"
33#include "rt2x00lib.h"
34#include "rt2x00dump.h"
35
36#define MAX_LINE_LENGTH 64
37
38struct rt2x00debug_crypto {
39 unsigned long success;
40 unsigned long icv_error;
41 unsigned long mic_error;
42 unsigned long key_error;
43};
44
45struct rt2x00debug_intf {
46
47
48
49
50 struct rt2x00_dev *rt2x00dev;
51
52
53
54
55
56
57 const struct rt2x00debug *debug;
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77 struct dentry *driver_folder;
78 struct dentry *driver_entry;
79 struct dentry *chipset_entry;
80 struct dentry *dev_flags;
81 struct dentry *cap_flags;
82 struct dentry *register_folder;
83 struct dentry *csr_off_entry;
84 struct dentry *csr_val_entry;
85 struct dentry *eeprom_off_entry;
86 struct dentry *eeprom_val_entry;
87 struct dentry *bbp_off_entry;
88 struct dentry *bbp_val_entry;
89 struct dentry *rf_off_entry;
90 struct dentry *rf_val_entry;
91 struct dentry *rfcsr_off_entry;
92 struct dentry *rfcsr_val_entry;
93 struct dentry *queue_folder;
94 struct dentry *queue_frame_dump_entry;
95 struct dentry *queue_stats_entry;
96 struct dentry *crypto_stats_entry;
97
98
99
100
101
102 unsigned long frame_dump_flags;
103#define FRAME_DUMP_FILE_OPEN 1
104
105
106
107
108
109
110
111 struct sk_buff_head frame_dump_skbqueue;
112 wait_queue_head_t frame_dump_waitqueue;
113
114
115
116
117
118 struct rt2x00debug_crypto crypto_stats[CIPHER_MAX];
119
120
121
122
123
124
125 struct debugfs_blob_wrapper driver_blob;
126 struct debugfs_blob_wrapper chipset_blob;
127
128
129
130
131 unsigned int offset_csr;
132 unsigned int offset_eeprom;
133 unsigned int offset_bbp;
134 unsigned int offset_rf;
135 unsigned int offset_rfcsr;
136};
137
138void rt2x00debug_update_crypto(struct rt2x00_dev *rt2x00dev,
139 struct rxdone_entry_desc *rxdesc)
140{
141 struct rt2x00debug_intf *intf = rt2x00dev->debugfs_intf;
142 enum cipher cipher = rxdesc->cipher;
143 enum rx_crypto status = rxdesc->cipher_status;
144
145 if (cipher == CIPHER_TKIP_NO_MIC)
146 cipher = CIPHER_TKIP;
147 if (cipher == CIPHER_NONE || cipher >= CIPHER_MAX)
148 return;
149
150
151 cipher--;
152
153 intf->crypto_stats[cipher].success += (status == RX_CRYPTO_SUCCESS);
154 intf->crypto_stats[cipher].icv_error += (status == RX_CRYPTO_FAIL_ICV);
155 intf->crypto_stats[cipher].mic_error += (status == RX_CRYPTO_FAIL_MIC);
156 intf->crypto_stats[cipher].key_error += (status == RX_CRYPTO_FAIL_KEY);
157}
158
159void rt2x00debug_dump_frame(struct rt2x00_dev *rt2x00dev,
160 enum rt2x00_dump_type type, struct queue_entry *entry)
161{
162 struct rt2x00debug_intf *intf = rt2x00dev->debugfs_intf;
163 struct sk_buff *skb = entry->skb;
164 struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb);
165 struct sk_buff *skbcopy;
166 struct rt2x00dump_hdr *dump_hdr;
167 struct timeval timestamp;
168 u32 data_len;
169
170 if (likely(!test_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags)))
171 return;
172
173 do_gettimeofday(×tamp);
174
175 if (skb_queue_len(&intf->frame_dump_skbqueue) > 20) {
176 rt2x00_dbg(rt2x00dev, "txrx dump queue length exceeded\n");
177 return;
178 }
179
180 data_len = skb->len;
181 if (skbdesc->flags & SKBDESC_DESC_IN_SKB)
182 data_len -= skbdesc->desc_len;
183
184 skbcopy = alloc_skb(sizeof(*dump_hdr) + skbdesc->desc_len + data_len,
185 GFP_ATOMIC);
186 if (!skbcopy) {
187 rt2x00_dbg(rt2x00dev, "Failed to copy skb for dump\n");
188 return;
189 }
190
191 dump_hdr = skb_put(skbcopy, sizeof(*dump_hdr));
192 dump_hdr->version = cpu_to_le32(DUMP_HEADER_VERSION);
193 dump_hdr->header_length = cpu_to_le32(sizeof(*dump_hdr));
194 dump_hdr->desc_length = cpu_to_le32(skbdesc->desc_len);
195 dump_hdr->data_length = cpu_to_le32(data_len);
196 dump_hdr->chip_rt = cpu_to_le16(rt2x00dev->chip.rt);
197 dump_hdr->chip_rf = cpu_to_le16(rt2x00dev->chip.rf);
198 dump_hdr->chip_rev = cpu_to_le16(rt2x00dev->chip.rev);
199 dump_hdr->type = cpu_to_le16(type);
200 dump_hdr->queue_index = entry->queue->qid;
201 dump_hdr->entry_index = entry->entry_idx;
202 dump_hdr->timestamp_sec = cpu_to_le32(timestamp.tv_sec);
203 dump_hdr->timestamp_usec = cpu_to_le32(timestamp.tv_usec);
204
205 if (!(skbdesc->flags & SKBDESC_DESC_IN_SKB))
206 skb_put_data(skbcopy, skbdesc->desc, skbdesc->desc_len);
207 skb_put_data(skbcopy, skb->data, skb->len);
208
209 skb_queue_tail(&intf->frame_dump_skbqueue, skbcopy);
210 wake_up_interruptible(&intf->frame_dump_waitqueue);
211
212
213
214
215 if (!test_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags))
216 skb_queue_purge(&intf->frame_dump_skbqueue);
217}
218EXPORT_SYMBOL_GPL(rt2x00debug_dump_frame);
219
220static int rt2x00debug_file_open(struct inode *inode, struct file *file)
221{
222 struct rt2x00debug_intf *intf = inode->i_private;
223
224 file->private_data = inode->i_private;
225
226 if (!try_module_get(intf->debug->owner))
227 return -EBUSY;
228
229 return 0;
230}
231
232static int rt2x00debug_file_release(struct inode *inode, struct file *file)
233{
234 struct rt2x00debug_intf *intf = file->private_data;
235
236 module_put(intf->debug->owner);
237
238 return 0;
239}
240
241static int rt2x00debug_open_queue_dump(struct inode *inode, struct file *file)
242{
243 struct rt2x00debug_intf *intf = inode->i_private;
244 int retval;
245
246 retval = rt2x00debug_file_open(inode, file);
247 if (retval)
248 return retval;
249
250 if (test_and_set_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags)) {
251 rt2x00debug_file_release(inode, file);
252 return -EBUSY;
253 }
254
255 return 0;
256}
257
258static int rt2x00debug_release_queue_dump(struct inode *inode, struct file *file)
259{
260 struct rt2x00debug_intf *intf = inode->i_private;
261
262 skb_queue_purge(&intf->frame_dump_skbqueue);
263
264 clear_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags);
265
266 return rt2x00debug_file_release(inode, file);
267}
268
269static ssize_t rt2x00debug_read_queue_dump(struct file *file,
270 char __user *buf,
271 size_t length,
272 loff_t *offset)
273{
274 struct rt2x00debug_intf *intf = file->private_data;
275 struct sk_buff *skb;
276 size_t status;
277 int retval;
278
279 if (file->f_flags & O_NONBLOCK)
280 return -EAGAIN;
281
282 retval =
283 wait_event_interruptible(intf->frame_dump_waitqueue,
284 (skb =
285 skb_dequeue(&intf->frame_dump_skbqueue)));
286 if (retval)
287 return retval;
288
289 status = min_t(size_t, skb->len, length);
290 if (copy_to_user(buf, skb->data, status)) {
291 status = -EFAULT;
292 goto exit;
293 }
294
295 *offset += status;
296
297exit:
298 kfree_skb(skb);
299
300 return status;
301}
302
303static unsigned int rt2x00debug_poll_queue_dump(struct file *file,
304 poll_table *wait)
305{
306 struct rt2x00debug_intf *intf = file->private_data;
307
308 poll_wait(file, &intf->frame_dump_waitqueue, wait);
309
310 if (!skb_queue_empty(&intf->frame_dump_skbqueue))
311 return POLLOUT | POLLWRNORM;
312
313 return 0;
314}
315
316static const struct file_operations rt2x00debug_fop_queue_dump = {
317 .owner = THIS_MODULE,
318 .read = rt2x00debug_read_queue_dump,
319 .poll = rt2x00debug_poll_queue_dump,
320 .open = rt2x00debug_open_queue_dump,
321 .release = rt2x00debug_release_queue_dump,
322 .llseek = default_llseek,
323};
324
325static ssize_t rt2x00debug_read_queue_stats(struct file *file,
326 char __user *buf,
327 size_t length,
328 loff_t *offset)
329{
330 struct rt2x00debug_intf *intf = file->private_data;
331 struct data_queue *queue;
332 unsigned long irqflags;
333 unsigned int lines = 1 + intf->rt2x00dev->data_queues;
334 size_t size;
335 char *data;
336 char *temp;
337
338 if (*offset)
339 return 0;
340
341 data = kcalloc(lines, MAX_LINE_LENGTH, GFP_KERNEL);
342 if (!data)
343 return -ENOMEM;
344
345 temp = data +
346 sprintf(data, "qid\tflags\t\tcount\tlimit\tlength\tindex\tdma done\tdone\n");
347
348 queue_for_each(intf->rt2x00dev, queue) {
349 spin_lock_irqsave(&queue->index_lock, irqflags);
350
351 temp += sprintf(temp, "%d\t0x%.8x\t%d\t%d\t%d\t%d\t%d\t\t%d\n",
352 queue->qid, (unsigned int)queue->flags,
353 queue->count, queue->limit, queue->length,
354 queue->index[Q_INDEX],
355 queue->index[Q_INDEX_DMA_DONE],
356 queue->index[Q_INDEX_DONE]);
357
358 spin_unlock_irqrestore(&queue->index_lock, irqflags);
359 }
360
361 size = strlen(data);
362 size = min(size, length);
363
364 if (copy_to_user(buf, data, size)) {
365 kfree(data);
366 return -EFAULT;
367 }
368
369 kfree(data);
370
371 *offset += size;
372 return size;
373}
374
375static const struct file_operations rt2x00debug_fop_queue_stats = {
376 .owner = THIS_MODULE,
377 .read = rt2x00debug_read_queue_stats,
378 .open = rt2x00debug_file_open,
379 .release = rt2x00debug_file_release,
380 .llseek = default_llseek,
381};
382
383#ifdef CONFIG_RT2X00_LIB_CRYPTO
384static ssize_t rt2x00debug_read_crypto_stats(struct file *file,
385 char __user *buf,
386 size_t length,
387 loff_t *offset)
388{
389 struct rt2x00debug_intf *intf = file->private_data;
390 static const char * const name[] = { "WEP64", "WEP128", "TKIP", "AES" };
391 char *data;
392 char *temp;
393 size_t size;
394 unsigned int i;
395
396 if (*offset)
397 return 0;
398
399 data = kzalloc((1 + CIPHER_MAX) * MAX_LINE_LENGTH, GFP_KERNEL);
400 if (!data)
401 return -ENOMEM;
402
403 temp = data;
404 temp += sprintf(data, "cipher\tsuccess\ticv err\tmic err\tkey err\n");
405
406 for (i = 0; i < CIPHER_MAX; i++) {
407 temp += sprintf(temp, "%s\t%lu\t%lu\t%lu\t%lu\n", name[i],
408 intf->crypto_stats[i].success,
409 intf->crypto_stats[i].icv_error,
410 intf->crypto_stats[i].mic_error,
411 intf->crypto_stats[i].key_error);
412 }
413
414 size = strlen(data);
415 size = min(size, length);
416
417 if (copy_to_user(buf, data, size)) {
418 kfree(data);
419 return -EFAULT;
420 }
421
422 kfree(data);
423
424 *offset += size;
425 return size;
426}
427
428static const struct file_operations rt2x00debug_fop_crypto_stats = {
429 .owner = THIS_MODULE,
430 .read = rt2x00debug_read_crypto_stats,
431 .open = rt2x00debug_file_open,
432 .release = rt2x00debug_file_release,
433 .llseek = default_llseek,
434};
435#endif
436
437#define RT2X00DEBUGFS_OPS_READ(__name, __format, __type) \
438static ssize_t rt2x00debug_read_##__name(struct file *file, \
439 char __user *buf, \
440 size_t length, \
441 loff_t *offset) \
442{ \
443 struct rt2x00debug_intf *intf = file->private_data; \
444 const struct rt2x00debug *debug = intf->debug; \
445 char line[16]; \
446 size_t size; \
447 unsigned int index = intf->offset_##__name; \
448 __type value; \
449 \
450 if (*offset) \
451 return 0; \
452 \
453 if (index >= debug->__name.word_count) \
454 return -EINVAL; \
455 \
456 index += (debug->__name.word_base / \
457 debug->__name.word_size); \
458 \
459 if (debug->__name.flags & RT2X00DEBUGFS_OFFSET) \
460 index *= debug->__name.word_size; \
461 \
462 value = debug->__name.read(intf->rt2x00dev, index); \
463 \
464 size = sprintf(line, __format, value); \
465 \
466 if (copy_to_user(buf, line, size)) \
467 return -EFAULT; \
468 \
469 *offset += size; \
470 return size; \
471}
472
473#define RT2X00DEBUGFS_OPS_WRITE(__name, __type) \
474static ssize_t rt2x00debug_write_##__name(struct file *file, \
475 const char __user *buf,\
476 size_t length, \
477 loff_t *offset) \
478{ \
479 struct rt2x00debug_intf *intf = file->private_data; \
480 const struct rt2x00debug *debug = intf->debug; \
481 char line[17]; \
482 size_t size; \
483 unsigned int index = intf->offset_##__name; \
484 __type value; \
485 \
486 if (*offset) \
487 return 0; \
488 \
489 if (index >= debug->__name.word_count) \
490 return -EINVAL; \
491 \
492 if (length > sizeof(line)) \
493 return -EINVAL; \
494 \
495 if (copy_from_user(line, buf, length)) \
496 return -EFAULT; \
497 line[16] = 0; \
498 \
499 size = strlen(line); \
500 value = simple_strtoul(line, NULL, 0); \
501 \
502 index += (debug->__name.word_base / \
503 debug->__name.word_size); \
504 \
505 if (debug->__name.flags & RT2X00DEBUGFS_OFFSET) \
506 index *= debug->__name.word_size; \
507 \
508 debug->__name.write(intf->rt2x00dev, index, value); \
509 \
510 *offset += size; \
511 return size; \
512}
513
514#define RT2X00DEBUGFS_OPS(__name, __format, __type) \
515RT2X00DEBUGFS_OPS_READ(__name, __format, __type); \
516RT2X00DEBUGFS_OPS_WRITE(__name, __type); \
517 \
518static const struct file_operations rt2x00debug_fop_##__name = {\
519 .owner = THIS_MODULE, \
520 .read = rt2x00debug_read_##__name, \
521 .write = rt2x00debug_write_##__name, \
522 .open = rt2x00debug_file_open, \
523 .release = rt2x00debug_file_release, \
524 .llseek = generic_file_llseek, \
525};
526
527RT2X00DEBUGFS_OPS(csr, "0x%.8x\n", u32);
528RT2X00DEBUGFS_OPS(eeprom, "0x%.4x\n", u16);
529RT2X00DEBUGFS_OPS(bbp, "0x%.2x\n", u8);
530RT2X00DEBUGFS_OPS(rf, "0x%.8x\n", u32);
531RT2X00DEBUGFS_OPS(rfcsr, "0x%.2x\n", u8);
532
533static ssize_t rt2x00debug_read_dev_flags(struct file *file,
534 char __user *buf,
535 size_t length,
536 loff_t *offset)
537{
538 struct rt2x00debug_intf *intf = file->private_data;
539 char line[16];
540 size_t size;
541
542 if (*offset)
543 return 0;
544
545 size = sprintf(line, "0x%.8x\n", (unsigned int)intf->rt2x00dev->flags);
546
547 if (copy_to_user(buf, line, size))
548 return -EFAULT;
549
550 *offset += size;
551 return size;
552}
553
554static const struct file_operations rt2x00debug_fop_dev_flags = {
555 .owner = THIS_MODULE,
556 .read = rt2x00debug_read_dev_flags,
557 .open = rt2x00debug_file_open,
558 .release = rt2x00debug_file_release,
559 .llseek = default_llseek,
560};
561
562static ssize_t rt2x00debug_read_cap_flags(struct file *file,
563 char __user *buf,
564 size_t length,
565 loff_t *offset)
566{
567 struct rt2x00debug_intf *intf = file->private_data;
568 char line[16];
569 size_t size;
570
571 if (*offset)
572 return 0;
573
574 size = sprintf(line, "0x%.8x\n", (unsigned int)intf->rt2x00dev->cap_flags);
575
576 if (copy_to_user(buf, line, size))
577 return -EFAULT;
578
579 *offset += size;
580 return size;
581}
582
583static const struct file_operations rt2x00debug_fop_cap_flags = {
584 .owner = THIS_MODULE,
585 .read = rt2x00debug_read_cap_flags,
586 .open = rt2x00debug_file_open,
587 .release = rt2x00debug_file_release,
588 .llseek = default_llseek,
589};
590
591static struct dentry *rt2x00debug_create_file_driver(const char *name,
592 struct rt2x00debug_intf
593 *intf,
594 struct debugfs_blob_wrapper
595 *blob)
596{
597 char *data;
598
599 data = kzalloc(3 * MAX_LINE_LENGTH, GFP_KERNEL);
600 if (!data)
601 return NULL;
602
603 blob->data = data;
604 data += sprintf(data, "driver:\t%s\n", intf->rt2x00dev->ops->name);
605 data += sprintf(data, "version:\t%s\n", DRV_VERSION);
606 blob->size = strlen(blob->data);
607
608 return debugfs_create_blob(name, S_IRUSR, intf->driver_folder, blob);
609}
610
611static struct dentry *rt2x00debug_create_file_chipset(const char *name,
612 struct rt2x00debug_intf
613 *intf,
614 struct
615 debugfs_blob_wrapper
616 *blob)
617{
618 const struct rt2x00debug *debug = intf->debug;
619 char *data;
620
621 data = kzalloc(9 * MAX_LINE_LENGTH, GFP_KERNEL);
622 if (!data)
623 return NULL;
624
625 blob->data = data;
626 data += sprintf(data, "rt chip:\t%04x\n", intf->rt2x00dev->chip.rt);
627 data += sprintf(data, "rf chip:\t%04x\n", intf->rt2x00dev->chip.rf);
628 data += sprintf(data, "revision:\t%04x\n", intf->rt2x00dev->chip.rev);
629 data += sprintf(data, "\n");
630 data += sprintf(data, "register\tbase\twords\twordsize\n");
631#define RT2X00DEBUGFS_SPRINTF_REGISTER(__name) \
632{ \
633 if (debug->__name.read) \
634 data += sprintf(data, __stringify(__name) \
635 "\t%d\t%d\t%d\n", \
636 debug->__name.word_base, \
637 debug->__name.word_count, \
638 debug->__name.word_size); \
639}
640 RT2X00DEBUGFS_SPRINTF_REGISTER(csr);
641 RT2X00DEBUGFS_SPRINTF_REGISTER(eeprom);
642 RT2X00DEBUGFS_SPRINTF_REGISTER(bbp);
643 RT2X00DEBUGFS_SPRINTF_REGISTER(rf);
644 RT2X00DEBUGFS_SPRINTF_REGISTER(rfcsr);
645#undef RT2X00DEBUGFS_SPRINTF_REGISTER
646
647 blob->size = strlen(blob->data);
648
649 return debugfs_create_blob(name, S_IRUSR, intf->driver_folder, blob);
650}
651
652void rt2x00debug_register(struct rt2x00_dev *rt2x00dev)
653{
654 const struct rt2x00debug *debug = rt2x00dev->ops->debugfs;
655 struct rt2x00debug_intf *intf;
656
657 intf = kzalloc(sizeof(struct rt2x00debug_intf), GFP_KERNEL);
658 if (!intf) {
659 rt2x00_err(rt2x00dev, "Failed to allocate debug handler\n");
660 return;
661 }
662
663 intf->debug = debug;
664 intf->rt2x00dev = rt2x00dev;
665 rt2x00dev->debugfs_intf = intf;
666
667 intf->driver_folder =
668 debugfs_create_dir(intf->rt2x00dev->ops->name,
669 rt2x00dev->hw->wiphy->debugfsdir);
670 if (IS_ERR(intf->driver_folder) || !intf->driver_folder)
671 goto exit;
672
673 intf->driver_entry =
674 rt2x00debug_create_file_driver("driver", intf, &intf->driver_blob);
675 if (IS_ERR(intf->driver_entry) || !intf->driver_entry)
676 goto exit;
677
678 intf->chipset_entry =
679 rt2x00debug_create_file_chipset("chipset",
680 intf, &intf->chipset_blob);
681 if (IS_ERR(intf->chipset_entry) || !intf->chipset_entry)
682 goto exit;
683
684 intf->dev_flags = debugfs_create_file("dev_flags", S_IRUSR,
685 intf->driver_folder, intf,
686 &rt2x00debug_fop_dev_flags);
687 if (IS_ERR(intf->dev_flags) || !intf->dev_flags)
688 goto exit;
689
690 intf->cap_flags = debugfs_create_file("cap_flags", S_IRUSR,
691 intf->driver_folder, intf,
692 &rt2x00debug_fop_cap_flags);
693 if (IS_ERR(intf->cap_flags) || !intf->cap_flags)
694 goto exit;
695
696 intf->register_folder =
697 debugfs_create_dir("register", intf->driver_folder);
698 if (IS_ERR(intf->register_folder) || !intf->register_folder)
699 goto exit;
700
701#define RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(__intf, __name) \
702({ \
703 if (debug->__name.read) { \
704 (__intf)->__name##_off_entry = \
705 debugfs_create_u32(__stringify(__name) "_offset", \
706 S_IRUSR | S_IWUSR, \
707 (__intf)->register_folder, \
708 &(__intf)->offset_##__name); \
709 if (IS_ERR((__intf)->__name##_off_entry) \
710 || !(__intf)->__name##_off_entry) \
711 goto exit; \
712 \
713 (__intf)->__name##_val_entry = \
714 debugfs_create_file(__stringify(__name) "_value", \
715 S_IRUSR | S_IWUSR, \
716 (__intf)->register_folder, \
717 (__intf), &rt2x00debug_fop_##__name); \
718 if (IS_ERR((__intf)->__name##_val_entry) \
719 || !(__intf)->__name##_val_entry) \
720 goto exit; \
721 } \
722})
723
724 RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, csr);
725 RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, eeprom);
726 RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, bbp);
727 RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, rf);
728 RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, rfcsr);
729
730#undef RT2X00DEBUGFS_CREATE_REGISTER_ENTRY
731
732 intf->queue_folder =
733 debugfs_create_dir("queue", intf->driver_folder);
734 if (IS_ERR(intf->queue_folder) || !intf->queue_folder)
735 goto exit;
736
737 intf->queue_frame_dump_entry =
738 debugfs_create_file("dump", S_IRUSR, intf->queue_folder,
739 intf, &rt2x00debug_fop_queue_dump);
740 if (IS_ERR(intf->queue_frame_dump_entry)
741 || !intf->queue_frame_dump_entry)
742 goto exit;
743
744 skb_queue_head_init(&intf->frame_dump_skbqueue);
745 init_waitqueue_head(&intf->frame_dump_waitqueue);
746
747 intf->queue_stats_entry =
748 debugfs_create_file("queue", S_IRUSR, intf->queue_folder,
749 intf, &rt2x00debug_fop_queue_stats);
750
751#ifdef CONFIG_RT2X00_LIB_CRYPTO
752 if (rt2x00_has_cap_hw_crypto(rt2x00dev))
753 intf->crypto_stats_entry =
754 debugfs_create_file("crypto", S_IRUGO, intf->queue_folder,
755 intf, &rt2x00debug_fop_crypto_stats);
756#endif
757
758 return;
759
760exit:
761 rt2x00debug_deregister(rt2x00dev);
762 rt2x00_err(rt2x00dev, "Failed to register debug handler\n");
763}
764
765void rt2x00debug_deregister(struct rt2x00_dev *rt2x00dev)
766{
767 struct rt2x00debug_intf *intf = rt2x00dev->debugfs_intf;
768
769 if (unlikely(!intf))
770 return;
771
772 skb_queue_purge(&intf->frame_dump_skbqueue);
773
774#ifdef CONFIG_RT2X00_LIB_CRYPTO
775 debugfs_remove(intf->crypto_stats_entry);
776#endif
777 debugfs_remove(intf->queue_stats_entry);
778 debugfs_remove(intf->queue_frame_dump_entry);
779 debugfs_remove(intf->queue_folder);
780 debugfs_remove(intf->rfcsr_val_entry);
781 debugfs_remove(intf->rfcsr_off_entry);
782 debugfs_remove(intf->rf_val_entry);
783 debugfs_remove(intf->rf_off_entry);
784 debugfs_remove(intf->bbp_val_entry);
785 debugfs_remove(intf->bbp_off_entry);
786 debugfs_remove(intf->eeprom_val_entry);
787 debugfs_remove(intf->eeprom_off_entry);
788 debugfs_remove(intf->csr_val_entry);
789 debugfs_remove(intf->csr_off_entry);
790 debugfs_remove(intf->register_folder);
791 debugfs_remove(intf->dev_flags);
792 debugfs_remove(intf->cap_flags);
793 debugfs_remove(intf->chipset_entry);
794 debugfs_remove(intf->driver_entry);
795 debugfs_remove(intf->driver_folder);
796 kfree(intf->chipset_blob.data);
797 kfree(intf->driver_blob.data);
798 kfree(intf);
799
800 rt2x00dev->debugfs_intf = NULL;
801}
802
