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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 timespec64 timestamp;
168 u32 data_len;
169
170 if (likely(!test_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags)))
171 return;
172
173 ktime_get_ts64(×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_nsec /
204 NSEC_PER_USEC);
205
206 if (!(skbdesc->flags & SKBDESC_DESC_IN_SKB))
207 skb_put_data(skbcopy, skbdesc->desc, skbdesc->desc_len);
208 skb_put_data(skbcopy, skb->data, skb->len);
209
210 skb_queue_tail(&intf->frame_dump_skbqueue, skbcopy);
211 wake_up_interruptible(&intf->frame_dump_waitqueue);
212
213
214
215
216 if (!test_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags))
217 skb_queue_purge(&intf->frame_dump_skbqueue);
218}
219EXPORT_SYMBOL_GPL(rt2x00debug_dump_frame);
220
221static int rt2x00debug_file_open(struct inode *inode, struct file *file)
222{
223 struct rt2x00debug_intf *intf = inode->i_private;
224
225 file->private_data = inode->i_private;
226
227 if (!try_module_get(intf->debug->owner))
228 return -EBUSY;
229
230 return 0;
231}
232
233static int rt2x00debug_file_release(struct inode *inode, struct file *file)
234{
235 struct rt2x00debug_intf *intf = file->private_data;
236
237 module_put(intf->debug->owner);
238
239 return 0;
240}
241
242static int rt2x00debug_open_queue_dump(struct inode *inode, struct file *file)
243{
244 struct rt2x00debug_intf *intf = inode->i_private;
245 int retval;
246
247 retval = rt2x00debug_file_open(inode, file);
248 if (retval)
249 return retval;
250
251 if (test_and_set_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags)) {
252 rt2x00debug_file_release(inode, file);
253 return -EBUSY;
254 }
255
256 return 0;
257}
258
259static int rt2x00debug_release_queue_dump(struct inode *inode, struct file *file)
260{
261 struct rt2x00debug_intf *intf = inode->i_private;
262
263 skb_queue_purge(&intf->frame_dump_skbqueue);
264
265 clear_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags);
266
267 return rt2x00debug_file_release(inode, file);
268}
269
270static ssize_t rt2x00debug_read_queue_dump(struct file *file,
271 char __user *buf,
272 size_t length,
273 loff_t *offset)
274{
275 struct rt2x00debug_intf *intf = file->private_data;
276 struct sk_buff *skb;
277 size_t status;
278 int retval;
279
280 if (file->f_flags & O_NONBLOCK)
281 return -EAGAIN;
282
283 retval =
284 wait_event_interruptible(intf->frame_dump_waitqueue,
285 (skb =
286 skb_dequeue(&intf->frame_dump_skbqueue)));
287 if (retval)
288 return retval;
289
290 status = min_t(size_t, skb->len, length);
291 if (copy_to_user(buf, skb->data, status)) {
292 status = -EFAULT;
293 goto exit;
294 }
295
296 *offset += status;
297
298exit:
299 kfree_skb(skb);
300
301 return status;
302}
303
304static __poll_t rt2x00debug_poll_queue_dump(struct file *file,
305 poll_table *wait)
306{
307 struct rt2x00debug_intf *intf = file->private_data;
308
309 poll_wait(file, &intf->frame_dump_waitqueue, wait);
310
311 if (!skb_queue_empty(&intf->frame_dump_skbqueue))
312 return EPOLLOUT | EPOLLWRNORM;
313
314 return 0;
315}
316
317static const struct file_operations rt2x00debug_fop_queue_dump = {
318 .owner = THIS_MODULE,
319 .read = rt2x00debug_read_queue_dump,
320 .poll = rt2x00debug_poll_queue_dump,
321 .open = rt2x00debug_open_queue_dump,
322 .release = rt2x00debug_release_queue_dump,
323 .llseek = default_llseek,
324};
325
326static ssize_t rt2x00debug_read_queue_stats(struct file *file,
327 char __user *buf,
328 size_t length,
329 loff_t *offset)
330{
331 struct rt2x00debug_intf *intf = file->private_data;
332 struct data_queue *queue;
333 unsigned long irqflags;
334 unsigned int lines = 1 + intf->rt2x00dev->data_queues;
335 size_t size;
336 char *data;
337 char *temp;
338
339 if (*offset)
340 return 0;
341
342 data = kcalloc(lines, MAX_LINE_LENGTH, GFP_KERNEL);
343 if (!data)
344 return -ENOMEM;
345
346 temp = data +
347 sprintf(data, "qid\tflags\t\tcount\tlimit\tlength\tindex\tdma done\tdone\n");
348
349 queue_for_each(intf->rt2x00dev, queue) {
350 spin_lock_irqsave(&queue->index_lock, irqflags);
351
352 temp += sprintf(temp, "%d\t0x%.8x\t%d\t%d\t%d\t%d\t%d\t\t%d\n",
353 queue->qid, (unsigned int)queue->flags,
354 queue->count, queue->limit, queue->length,
355 queue->index[Q_INDEX],
356 queue->index[Q_INDEX_DMA_DONE],
357 queue->index[Q_INDEX_DONE]);
358
359 spin_unlock_irqrestore(&queue->index_lock, irqflags);
360 }
361
362 size = strlen(data);
363 size = min(size, length);
364
365 if (copy_to_user(buf, data, size)) {
366 kfree(data);
367 return -EFAULT;
368 }
369
370 kfree(data);
371
372 *offset += size;
373 return size;
374}
375
376static const struct file_operations rt2x00debug_fop_queue_stats = {
377 .owner = THIS_MODULE,
378 .read = rt2x00debug_read_queue_stats,
379 .open = rt2x00debug_file_open,
380 .release = rt2x00debug_file_release,
381 .llseek = default_llseek,
382};
383
384#ifdef CONFIG_RT2X00_LIB_CRYPTO
385static ssize_t rt2x00debug_read_crypto_stats(struct file *file,
386 char __user *buf,
387 size_t length,
388 loff_t *offset)
389{
390 struct rt2x00debug_intf *intf = file->private_data;
391 static const char * const name[] = { "WEP64", "WEP128", "TKIP", "AES" };
392 char *data;
393 char *temp;
394 size_t size;
395 unsigned int i;
396
397 if (*offset)
398 return 0;
399
400 data = kzalloc((1 + CIPHER_MAX) * MAX_LINE_LENGTH, GFP_KERNEL);
401 if (!data)
402 return -ENOMEM;
403
404 temp = data;
405 temp += sprintf(data, "cipher\tsuccess\ticv err\tmic err\tkey err\n");
406
407 for (i = 0; i < CIPHER_MAX; i++) {
408 temp += sprintf(temp, "%s\t%lu\t%lu\t%lu\t%lu\n", name[i],
409 intf->crypto_stats[i].success,
410 intf->crypto_stats[i].icv_error,
411 intf->crypto_stats[i].mic_error,
412 intf->crypto_stats[i].key_error);
413 }
414
415 size = strlen(data);
416 size = min(size, length);
417
418 if (copy_to_user(buf, data, size)) {
419 kfree(data);
420 return -EFAULT;
421 }
422
423 kfree(data);
424
425 *offset += size;
426 return size;
427}
428
429static const struct file_operations rt2x00debug_fop_crypto_stats = {
430 .owner = THIS_MODULE,
431 .read = rt2x00debug_read_crypto_stats,
432 .open = rt2x00debug_file_open,
433 .release = rt2x00debug_file_release,
434 .llseek = default_llseek,
435};
436#endif
437
438#define RT2X00DEBUGFS_OPS_READ(__name, __format, __type) \
439static ssize_t rt2x00debug_read_##__name(struct file *file, \
440 char __user *buf, \
441 size_t length, \
442 loff_t *offset) \
443{ \
444 struct rt2x00debug_intf *intf = file->private_data; \
445 const struct rt2x00debug *debug = intf->debug; \
446 char line[16]; \
447 size_t size; \
448 unsigned int index = intf->offset_##__name; \
449 __type value; \
450 \
451 if (*offset) \
452 return 0; \
453 \
454 if (index >= debug->__name.word_count) \
455 return -EINVAL; \
456 \
457 index += (debug->__name.word_base / \
458 debug->__name.word_size); \
459 \
460 if (debug->__name.flags & RT2X00DEBUGFS_OFFSET) \
461 index *= debug->__name.word_size; \
462 \
463 value = debug->__name.read(intf->rt2x00dev, index); \
464 \
465 size = sprintf(line, __format, value); \
466 \
467 if (copy_to_user(buf, line, size)) \
468 return -EFAULT; \
469 \
470 *offset += size; \
471 return size; \
472}
473
474#define RT2X00DEBUGFS_OPS_WRITE(__name, __type) \
475static ssize_t rt2x00debug_write_##__name(struct file *file, \
476 const char __user *buf,\
477 size_t length, \
478 loff_t *offset) \
479{ \
480 struct rt2x00debug_intf *intf = file->private_data; \
481 const struct rt2x00debug *debug = intf->debug; \
482 char line[17]; \
483 size_t size; \
484 unsigned int index = intf->offset_##__name; \
485 __type value; \
486 \
487 if (*offset) \
488 return 0; \
489 \
490 if (index >= debug->__name.word_count) \
491 return -EINVAL; \
492 \
493 if (length > sizeof(line)) \
494 return -EINVAL; \
495 \
496 if (copy_from_user(line, buf, length)) \
497 return -EFAULT; \
498 line[16] = 0; \
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, 0400, 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, 0400, 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 rt2x00_err(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", 0400,
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", 0400,
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 0600, \
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 0600, \
717 (__intf)->register_folder, \
718 (__intf), \
719 &rt2x00debug_fop_##__name); \
720 if (IS_ERR((__intf)->__name##_val_entry) || \
721 !(__intf)->__name##_val_entry) \
722 goto exit; \
723 } \
724})
725
726 RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, csr);
727 RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, eeprom);
728 RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, bbp);
729 RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, rf);
730 RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, rfcsr);
731
732#undef RT2X00DEBUGFS_CREATE_REGISTER_ENTRY
733
734 intf->queue_folder =
735 debugfs_create_dir("queue", intf->driver_folder);
736 if (IS_ERR(intf->queue_folder) || !intf->queue_folder)
737 goto exit;
738
739 intf->queue_frame_dump_entry =
740 debugfs_create_file("dump", 0400, intf->queue_folder,
741 intf, &rt2x00debug_fop_queue_dump);
742 if (IS_ERR(intf->queue_frame_dump_entry)
743 || !intf->queue_frame_dump_entry)
744 goto exit;
745
746 skb_queue_head_init(&intf->frame_dump_skbqueue);
747 init_waitqueue_head(&intf->frame_dump_waitqueue);
748
749 intf->queue_stats_entry =
750 debugfs_create_file("queue", 0400, intf->queue_folder,
751 intf, &rt2x00debug_fop_queue_stats);
752
753#ifdef CONFIG_RT2X00_LIB_CRYPTO
754 if (rt2x00_has_cap_hw_crypto(rt2x00dev))
755 intf->crypto_stats_entry =
756 debugfs_create_file("crypto", 0444, intf->queue_folder,
757 intf,
758 &rt2x00debug_fop_crypto_stats);
759#endif
760
761 return;
762
763exit:
764 rt2x00debug_deregister(rt2x00dev);
765 rt2x00_err(rt2x00dev, "Failed to register debug handler\n");
766}
767
768void rt2x00debug_deregister(struct rt2x00_dev *rt2x00dev)
769{
770 struct rt2x00debug_intf *intf = rt2x00dev->debugfs_intf;
771
772 if (unlikely(!intf))
773 return;
774
775 skb_queue_purge(&intf->frame_dump_skbqueue);
776
777#ifdef CONFIG_RT2X00_LIB_CRYPTO
778 debugfs_remove(intf->crypto_stats_entry);
779#endif
780 debugfs_remove(intf->queue_stats_entry);
781 debugfs_remove(intf->queue_frame_dump_entry);
782 debugfs_remove(intf->queue_folder);
783 debugfs_remove(intf->rfcsr_val_entry);
784 debugfs_remove(intf->rfcsr_off_entry);
785 debugfs_remove(intf->rf_val_entry);
786 debugfs_remove(intf->rf_off_entry);
787 debugfs_remove(intf->bbp_val_entry);
788 debugfs_remove(intf->bbp_off_entry);
789 debugfs_remove(intf->eeprom_val_entry);
790 debugfs_remove(intf->eeprom_off_entry);
791 debugfs_remove(intf->csr_val_entry);
792 debugfs_remove(intf->csr_off_entry);
793 debugfs_remove(intf->register_folder);
794 debugfs_remove(intf->dev_flags);
795 debugfs_remove(intf->cap_flags);
796 debugfs_remove(intf->chipset_entry);
797 debugfs_remove(intf->driver_entry);
798 debugfs_remove(intf->driver_folder);
799 kfree(intf->chipset_blob.data);
800 kfree(intf->driver_blob.data);
801 kfree(intf);
802
803 rt2x00dev->debugfs_intf = NULL;
804}
805
