1 /*
2 Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
3 <http://rt2x00.serialmonkey.com>
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the
17 Free Software Foundation, Inc.,
18 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19 */
20
21 /*
22 Module: rt2x00lib
23 Abstract: rt2x00 debugfs specific routines.
24 */
25
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
40 struct rt2x00debug_crypto {
41 unsigned long success;
42 unsigned long icv_error;
43 unsigned long mic_error;
44 unsigned long key_error;
45 };
46
47 struct rt2x00debug_intf {
48 /*
49 * Pointer to driver structure where
50 * this debugfs entry belongs to.
51 */
52 struct rt2x00_dev *rt2x00dev;
53
54 /*
55 * Reference to the rt2x00debug structure
56 * which can be used to communicate with
57 * the registers.
58 */
59 const struct rt2x00debug *debug;
60
61 /*
62 * Debugfs entries for:
63 * - driver folder
64 * - driver file
65 * - chipset file
66 * - device flags file
67 * - register folder
68 * - csr offset/value files
69 * - eeprom offset/value files
70 * - bbp offset/value files
71 * - rf offset/value files
72 * - queue folder
73 * - frame dump file
74 * - queue stats file
75 * - crypto stats file
76 */
77 struct dentry *driver_folder;
78 struct dentry *driver_entry;
79 struct dentry *chipset_entry;
80 struct dentry *dev_flags;
81 struct dentry *register_folder;
82 struct dentry *csr_off_entry;
83 struct dentry *csr_val_entry;
84 struct dentry *eeprom_off_entry;
85 struct dentry *eeprom_val_entry;
86 struct dentry *bbp_off_entry;
87 struct dentry *bbp_val_entry;
88 struct dentry *rf_off_entry;
89 struct dentry *rf_val_entry;
90 struct dentry *queue_folder;
91 struct dentry *queue_frame_dump_entry;
92 struct dentry *queue_stats_entry;
93 struct dentry *crypto_stats_entry;
94
95 /*
96 * The frame dump file only allows a single reader,
97 * so we need to store the current state here.
98 */
99 unsigned long frame_dump_flags;
100 #define FRAME_DUMP_FILE_OPEN 1
101
102 /*
103 * We queue each frame before dumping it to the user,
104 * per read command we will pass a single skb structure
105 * so we should be prepared to queue multiple sk buffers
106 * before sending it to userspace.
107 */
108 struct sk_buff_head frame_dump_skbqueue;
109 wait_queue_head_t frame_dump_waitqueue;
110
111 /*
112 * HW crypto statistics.
113 * All statistics are stored separately per cipher type.
114 */
115 struct rt2x00debug_crypto crypto_stats[CIPHER_MAX];
116
117 /*
118 * Driver and chipset files will use a data buffer
119 * that has been created in advance. This will simplify
120 * the code since we can use the debugfs functions.
121 */
122 struct debugfs_blob_wrapper driver_blob;
123 struct debugfs_blob_wrapper chipset_blob;
124
125 /*
126 * Requested offset for each register type.
127 */
128 unsigned int offset_csr;
129 unsigned int offset_eeprom;
130 unsigned int offset_bbp;
131 unsigned int offset_rf;
132 };
133
rt2x00debug_update_crypto(struct rt2x00_dev * rt2x00dev,struct rxdone_entry_desc * rxdesc)134 void rt2x00debug_update_crypto(struct rt2x00_dev *rt2x00dev,
135 struct rxdone_entry_desc *rxdesc)
136 {
137 struct rt2x00debug_intf *intf = rt2x00dev->debugfs_intf;
138 enum cipher cipher = rxdesc->cipher;
139 enum rx_crypto status = rxdesc->cipher_status;
140
141 if (cipher == CIPHER_TKIP_NO_MIC)
142 cipher = CIPHER_TKIP;
143 if (cipher == CIPHER_NONE || cipher >= CIPHER_MAX)
144 return;
145
146 /* Remove CIPHER_NONE index */
147 cipher--;
148
149 intf->crypto_stats[cipher].success += (status == RX_CRYPTO_SUCCESS);
150 intf->crypto_stats[cipher].icv_error += (status == RX_CRYPTO_FAIL_ICV);
151 intf->crypto_stats[cipher].mic_error += (status == RX_CRYPTO_FAIL_MIC);
152 intf->crypto_stats[cipher].key_error += (status == RX_CRYPTO_FAIL_KEY);
153 }
154
rt2x00debug_dump_frame(struct rt2x00_dev * rt2x00dev,enum rt2x00_dump_type type,struct sk_buff * skb)155 void rt2x00debug_dump_frame(struct rt2x00_dev *rt2x00dev,
156 enum rt2x00_dump_type type, struct sk_buff *skb)
157 {
158 struct rt2x00debug_intf *intf = rt2x00dev->debugfs_intf;
159 struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb);
160 struct sk_buff *skbcopy;
161 struct rt2x00dump_hdr *dump_hdr;
162 struct timeval timestamp;
163 u32 data_len;
164
165 if (likely(!test_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags)))
166 return;
167
168 do_gettimeofday(×tamp);
169
170 if (skb_queue_len(&intf->frame_dump_skbqueue) > 20) {
171 DEBUG(rt2x00dev, "txrx dump queue length exceeded.\n");
172 return;
173 }
174
175 data_len = skb->len;
176 if (skbdesc->flags & SKBDESC_DESC_IN_SKB)
177 data_len -= skbdesc->desc_len;
178
179 skbcopy = alloc_skb(sizeof(*dump_hdr) + skbdesc->desc_len + data_len,
180 GFP_ATOMIC);
181 if (!skbcopy) {
182 DEBUG(rt2x00dev, "Failed to copy skb for dump.\n");
183 return;
184 }
185
186 dump_hdr = (struct rt2x00dump_hdr *)skb_put(skbcopy, sizeof(*dump_hdr));
187 dump_hdr->version = cpu_to_le32(DUMP_HEADER_VERSION);
188 dump_hdr->header_length = cpu_to_le32(sizeof(*dump_hdr));
189 dump_hdr->desc_length = cpu_to_le32(skbdesc->desc_len);
190 dump_hdr->data_length = cpu_to_le32(data_len);
191 dump_hdr->chip_rt = cpu_to_le16(rt2x00dev->chip.rt);
192 dump_hdr->chip_rf = cpu_to_le16(rt2x00dev->chip.rf);
193 dump_hdr->chip_rev = cpu_to_le16(rt2x00dev->chip.rev);
194 dump_hdr->type = cpu_to_le16(type);
195 dump_hdr->queue_index = skbdesc->entry->queue->qid;
196 dump_hdr->entry_index = skbdesc->entry->entry_idx;
197 dump_hdr->timestamp_sec = cpu_to_le32(timestamp.tv_sec);
198 dump_hdr->timestamp_usec = cpu_to_le32(timestamp.tv_usec);
199
200 if (!(skbdesc->flags & SKBDESC_DESC_IN_SKB))
201 memcpy(skb_put(skbcopy, skbdesc->desc_len), skbdesc->desc,
202 skbdesc->desc_len);
203 memcpy(skb_put(skbcopy, skb->len), skb->data, skb->len);
204
205 skb_queue_tail(&intf->frame_dump_skbqueue, skbcopy);
206 wake_up_interruptible(&intf->frame_dump_waitqueue);
207
208 /*
209 * Verify that the file has not been closed while we were working.
210 */
211 if (!test_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags))
212 skb_queue_purge(&intf->frame_dump_skbqueue);
213 }
214 EXPORT_SYMBOL_GPL(rt2x00debug_dump_frame);
215
rt2x00debug_file_open(struct inode * inode,struct file * file)216 static int rt2x00debug_file_open(struct inode *inode, struct file *file)
217 {
218 struct rt2x00debug_intf *intf = inode->i_private;
219
220 file->private_data = inode->i_private;
221
222 if (!try_module_get(intf->debug->owner))
223 return -EBUSY;
224
225 return 0;
226 }
227
rt2x00debug_file_release(struct inode * inode,struct file * file)228 static int rt2x00debug_file_release(struct inode *inode, struct file *file)
229 {
230 struct rt2x00debug_intf *intf = file->private_data;
231
232 module_put(intf->debug->owner);
233
234 return 0;
235 }
236
rt2x00debug_open_queue_dump(struct inode * inode,struct file * file)237 static int rt2x00debug_open_queue_dump(struct inode *inode, struct file *file)
238 {
239 struct rt2x00debug_intf *intf = inode->i_private;
240 int retval;
241
242 retval = rt2x00debug_file_open(inode, file);
243 if (retval)
244 return retval;
245
246 if (test_and_set_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags)) {
247 rt2x00debug_file_release(inode, file);
248 return -EBUSY;
249 }
250
251 return 0;
252 }
253
rt2x00debug_release_queue_dump(struct inode * inode,struct file * file)254 static int rt2x00debug_release_queue_dump(struct inode *inode, struct file *file)
255 {
256 struct rt2x00debug_intf *intf = inode->i_private;
257
258 skb_queue_purge(&intf->frame_dump_skbqueue);
259
260 clear_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags);
261
262 return rt2x00debug_file_release(inode, file);
263 }
264
rt2x00debug_read_queue_dump(struct file * file,char __user * buf,size_t length,loff_t * offset)265 static ssize_t rt2x00debug_read_queue_dump(struct file *file,
266 char __user *buf,
267 size_t length,
268 loff_t *offset)
269 {
270 struct rt2x00debug_intf *intf = file->private_data;
271 struct sk_buff *skb;
272 size_t status;
273 int retval;
274
275 if (file->f_flags & O_NONBLOCK)
276 return -EAGAIN;
277
278 retval =
279 wait_event_interruptible(intf->frame_dump_waitqueue,
280 (skb =
281 skb_dequeue(&intf->frame_dump_skbqueue)));
282 if (retval)
283 return retval;
284
285 status = min((size_t)skb->len, length);
286 if (copy_to_user(buf, skb->data, status)) {
287 status = -EFAULT;
288 goto exit;
289 }
290
291 *offset += status;
292
293 exit:
294 kfree_skb(skb);
295
296 return status;
297 }
298
rt2x00debug_poll_queue_dump(struct file * file,poll_table * wait)299 static unsigned int rt2x00debug_poll_queue_dump(struct file *file,
300 poll_table *wait)
301 {
302 struct rt2x00debug_intf *intf = file->private_data;
303
304 poll_wait(file, &intf->frame_dump_waitqueue, wait);
305
306 if (!skb_queue_empty(&intf->frame_dump_skbqueue))
307 return POLLOUT | POLLWRNORM;
308
309 return 0;
310 }
311
312 static const struct file_operations rt2x00debug_fop_queue_dump = {
313 .owner = THIS_MODULE,
314 .read = rt2x00debug_read_queue_dump,
315 .poll = rt2x00debug_poll_queue_dump,
316 .open = rt2x00debug_open_queue_dump,
317 .release = rt2x00debug_release_queue_dump,
318 .llseek = default_llseek,
319 };
320
rt2x00debug_read_queue_stats(struct file * file,char __user * buf,size_t length,loff_t * offset)321 static ssize_t rt2x00debug_read_queue_stats(struct file *file,
322 char __user *buf,
323 size_t length,
324 loff_t *offset)
325 {
326 struct rt2x00debug_intf *intf = file->private_data;
327 struct data_queue *queue;
328 unsigned long irqflags;
329 unsigned int lines = 1 + intf->rt2x00dev->data_queues;
330 size_t size;
331 char *data;
332 char *temp;
333
334 if (*offset)
335 return 0;
336
337 data = kcalloc(lines, MAX_LINE_LENGTH, GFP_KERNEL);
338 if (!data)
339 return -ENOMEM;
340
341 temp = data +
342 sprintf(data, "qid\tflags\t\tcount\tlimit\tlength\tindex\tdma done\tdone\n");
343
344 queue_for_each(intf->rt2x00dev, queue) {
345 spin_lock_irqsave(&queue->index_lock, irqflags);
346
347 temp += sprintf(temp, "%d\t0x%.8x\t%d\t%d\t%d\t%d\t%d\t\t%d\n",
348 queue->qid, (unsigned int)queue->flags,
349 queue->count, queue->limit, queue->length,
350 queue->index[Q_INDEX],
351 queue->index[Q_INDEX_DMA_DONE],
352 queue->index[Q_INDEX_DONE]);
353
354 spin_unlock_irqrestore(&queue->index_lock, irqflags);
355 }
356
357 size = strlen(data);
358 size = min(size, length);
359
360 if (copy_to_user(buf, data, size)) {
361 kfree(data);
362 return -EFAULT;
363 }
364
365 kfree(data);
366
367 *offset += size;
368 return size;
369 }
370
371 static const struct file_operations rt2x00debug_fop_queue_stats = {
372 .owner = THIS_MODULE,
373 .read = rt2x00debug_read_queue_stats,
374 .open = rt2x00debug_file_open,
375 .release = rt2x00debug_file_release,
376 .llseek = default_llseek,
377 };
378
379 #ifdef CONFIG_RT2X00_LIB_CRYPTO
rt2x00debug_read_crypto_stats(struct file * file,char __user * buf,size_t length,loff_t * offset)380 static ssize_t rt2x00debug_read_crypto_stats(struct file *file,
381 char __user *buf,
382 size_t length,
383 loff_t *offset)
384 {
385 struct rt2x00debug_intf *intf = file->private_data;
386 static const char * const name[] = { "WEP64", "WEP128", "TKIP", "AES" };
387 char *data;
388 char *temp;
389 size_t size;
390 unsigned int i;
391
392 if (*offset)
393 return 0;
394
395 data = kzalloc((1 + CIPHER_MAX) * MAX_LINE_LENGTH, GFP_KERNEL);
396 if (!data)
397 return -ENOMEM;
398
399 temp = data;
400 temp += sprintf(data, "cipher\tsuccess\ticv err\tmic err\tkey err\n");
401
402 for (i = 0; i < CIPHER_MAX; i++) {
403 temp += sprintf(temp, "%s\t%lu\t%lu\t%lu\t%lu\n", name[i],
404 intf->crypto_stats[i].success,
405 intf->crypto_stats[i].icv_error,
406 intf->crypto_stats[i].mic_error,
407 intf->crypto_stats[i].key_error);
408 }
409
410 size = strlen(data);
411 size = min(size, length);
412
413 if (copy_to_user(buf, data, size)) {
414 kfree(data);
415 return -EFAULT;
416 }
417
418 kfree(data);
419
420 *offset += size;
421 return size;
422 }
423
424 static const struct file_operations rt2x00debug_fop_crypto_stats = {
425 .owner = THIS_MODULE,
426 .read = rt2x00debug_read_crypto_stats,
427 .open = rt2x00debug_file_open,
428 .release = rt2x00debug_file_release,
429 .llseek = default_llseek,
430 };
431 #endif
432
433 #define RT2X00DEBUGFS_OPS_READ(__name, __format, __type) \
434 static ssize_t rt2x00debug_read_##__name(struct file *file, \
435 char __user *buf, \
436 size_t length, \
437 loff_t *offset) \
438 { \
439 struct rt2x00debug_intf *intf = file->private_data; \
440 const struct rt2x00debug *debug = intf->debug; \
441 char line[16]; \
442 size_t size; \
443 unsigned int index = intf->offset_##__name; \
444 __type value; \
445 \
446 if (*offset) \
447 return 0; \
448 \
449 if (index >= debug->__name.word_count) \
450 return -EINVAL; \
451 \
452 index += (debug->__name.word_base / \
453 debug->__name.word_size); \
454 \
455 if (debug->__name.flags & RT2X00DEBUGFS_OFFSET) \
456 index *= debug->__name.word_size; \
457 \
458 debug->__name.read(intf->rt2x00dev, index, &value); \
459 \
460 size = sprintf(line, __format, value); \
461 \
462 if (copy_to_user(buf, line, size)) \
463 return -EFAULT; \
464 \
465 *offset += size; \
466 return size; \
467 }
468
469 #define RT2X00DEBUGFS_OPS_WRITE(__name, __type) \
470 static ssize_t rt2x00debug_write_##__name(struct file *file, \
471 const char __user *buf,\
472 size_t length, \
473 loff_t *offset) \
474 { \
475 struct rt2x00debug_intf *intf = file->private_data; \
476 const struct rt2x00debug *debug = intf->debug; \
477 char line[16]; \
478 size_t size; \
479 unsigned int index = intf->offset_##__name; \
480 __type value; \
481 \
482 if (*offset) \
483 return 0; \
484 \
485 if (index >= debug->__name.word_count) \
486 return -EINVAL; \
487 \
488 if (length > sizeof(line)) \
489 return -EINVAL; \
490 \
491 if (copy_from_user(line, buf, length)) \
492 return -EFAULT; \
493 \
494 size = strlen(line); \
495 value = simple_strtoul(line, NULL, 0); \
496 \
497 index += (debug->__name.word_base / \
498 debug->__name.word_size); \
499 \
500 if (debug->__name.flags & RT2X00DEBUGFS_OFFSET) \
501 index *= debug->__name.word_size; \
502 \
503 debug->__name.write(intf->rt2x00dev, index, value); \
504 \
505 *offset += size; \
506 return size; \
507 }
508
509 #define RT2X00DEBUGFS_OPS(__name, __format, __type) \
510 RT2X00DEBUGFS_OPS_READ(__name, __format, __type); \
511 RT2X00DEBUGFS_OPS_WRITE(__name, __type); \
512 \
513 static const struct file_operations rt2x00debug_fop_##__name = {\
514 .owner = THIS_MODULE, \
515 .read = rt2x00debug_read_##__name, \
516 .write = rt2x00debug_write_##__name, \
517 .open = rt2x00debug_file_open, \
518 .release = rt2x00debug_file_release, \
519 .llseek = generic_file_llseek, \
520 };
521
522 RT2X00DEBUGFS_OPS(csr, "0x%.8x\n", u32);
523 RT2X00DEBUGFS_OPS(eeprom, "0x%.4x\n", u16);
524 RT2X00DEBUGFS_OPS(bbp, "0x%.2x\n", u8);
525 RT2X00DEBUGFS_OPS(rf, "0x%.8x\n", u32);
526
rt2x00debug_read_dev_flags(struct file * file,char __user * buf,size_t length,loff_t * offset)527 static ssize_t rt2x00debug_read_dev_flags(struct file *file,
528 char __user *buf,
529 size_t length,
530 loff_t *offset)
531 {
532 struct rt2x00debug_intf *intf = file->private_data;
533 char line[16];
534 size_t size;
535
536 if (*offset)
537 return 0;
538
539 size = sprintf(line, "0x%.8x\n", (unsigned int)intf->rt2x00dev->flags);
540
541 if (copy_to_user(buf, line, size))
542 return -EFAULT;
543
544 *offset += size;
545 return size;
546 }
547
548 static const struct file_operations rt2x00debug_fop_dev_flags = {
549 .owner = THIS_MODULE,
550 .read = rt2x00debug_read_dev_flags,
551 .open = rt2x00debug_file_open,
552 .release = rt2x00debug_file_release,
553 .llseek = default_llseek,
554 };
555
rt2x00debug_create_file_driver(const char * name,struct rt2x00debug_intf * intf,struct debugfs_blob_wrapper * blob)556 static struct dentry *rt2x00debug_create_file_driver(const char *name,
557 struct rt2x00debug_intf
558 *intf,
559 struct debugfs_blob_wrapper
560 *blob)
561 {
562 char *data;
563
564 data = kzalloc(3 * MAX_LINE_LENGTH, GFP_KERNEL);
565 if (!data)
566 return NULL;
567
568 blob->data = data;
569 data += sprintf(data, "driver:\t%s\n", intf->rt2x00dev->ops->name);
570 data += sprintf(data, "version:\t%s\n", DRV_VERSION);
571 data += sprintf(data, "compiled:\t%s %s\n", __DATE__, __TIME__);
572 blob->size = strlen(blob->data);
573
574 return debugfs_create_blob(name, S_IRUSR, intf->driver_folder, blob);
575 }
576
rt2x00debug_create_file_chipset(const char * name,struct rt2x00debug_intf * intf,struct debugfs_blob_wrapper * blob)577 static struct dentry *rt2x00debug_create_file_chipset(const char *name,
578 struct rt2x00debug_intf
579 *intf,
580 struct
581 debugfs_blob_wrapper
582 *blob)
583 {
584 const struct rt2x00debug *debug = intf->debug;
585 char *data;
586
587 data = kzalloc(8 * MAX_LINE_LENGTH, GFP_KERNEL);
588 if (!data)
589 return NULL;
590
591 blob->data = data;
592 data += sprintf(data, "rt chip:\t%04x\n", intf->rt2x00dev->chip.rt);
593 data += sprintf(data, "rf chip:\t%04x\n", intf->rt2x00dev->chip.rf);
594 data += sprintf(data, "revision:\t%04x\n", intf->rt2x00dev->chip.rev);
595 data += sprintf(data, "\n");
596 data += sprintf(data, "register\tbase\twords\twordsize\n");
597 data += sprintf(data, "csr\t%d\t%d\t%d\n",
598 debug->csr.word_base,
599 debug->csr.word_count,
600 debug->csr.word_size);
601 data += sprintf(data, "eeprom\t%d\t%d\t%d\n",
602 debug->eeprom.word_base,
603 debug->eeprom.word_count,
604 debug->eeprom.word_size);
605 data += sprintf(data, "bbp\t%d\t%d\t%d\n",
606 debug->bbp.word_base,
607 debug->bbp.word_count,
608 debug->bbp.word_size);
609 data += sprintf(data, "rf\t%d\t%d\t%d\n",
610 debug->rf.word_base,
611 debug->rf.word_count,
612 debug->rf.word_size);
613 blob->size = strlen(blob->data);
614
615 return debugfs_create_blob(name, S_IRUSR, intf->driver_folder, blob);
616 }
617
rt2x00debug_register(struct rt2x00_dev * rt2x00dev)618 void rt2x00debug_register(struct rt2x00_dev *rt2x00dev)
619 {
620 const struct rt2x00debug *debug = rt2x00dev->ops->debugfs;
621 struct rt2x00debug_intf *intf;
622
623 intf = kzalloc(sizeof(struct rt2x00debug_intf), GFP_KERNEL);
624 if (!intf) {
625 ERROR(rt2x00dev, "Failed to allocate debug handler.\n");
626 return;
627 }
628
629 intf->debug = debug;
630 intf->rt2x00dev = rt2x00dev;
631 rt2x00dev->debugfs_intf = intf;
632
633 intf->driver_folder =
634 debugfs_create_dir(intf->rt2x00dev->ops->name,
635 rt2x00dev->hw->wiphy->debugfsdir);
636 if (IS_ERR(intf->driver_folder) || !intf->driver_folder)
637 goto exit;
638
639 intf->driver_entry =
640 rt2x00debug_create_file_driver("driver", intf, &intf->driver_blob);
641 if (IS_ERR(intf->driver_entry) || !intf->driver_entry)
642 goto exit;
643
644 intf->chipset_entry =
645 rt2x00debug_create_file_chipset("chipset",
646 intf, &intf->chipset_blob);
647 if (IS_ERR(intf->chipset_entry) || !intf->chipset_entry)
648 goto exit;
649
650 intf->dev_flags = debugfs_create_file("dev_flags", S_IRUSR,
651 intf->driver_folder, intf,
652 &rt2x00debug_fop_dev_flags);
653 if (IS_ERR(intf->dev_flags) || !intf->dev_flags)
654 goto exit;
655
656 intf->register_folder =
657 debugfs_create_dir("register", intf->driver_folder);
658 if (IS_ERR(intf->register_folder) || !intf->register_folder)
659 goto exit;
660
661 #define RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(__intf, __name) \
662 ({ \
663 (__intf)->__name##_off_entry = \
664 debugfs_create_u32(__stringify(__name) "_offset", \
665 S_IRUSR | S_IWUSR, \
666 (__intf)->register_folder, \
667 &(__intf)->offset_##__name); \
668 if (IS_ERR((__intf)->__name##_off_entry) \
669 || !(__intf)->__name##_off_entry) \
670 goto exit; \
671 \
672 (__intf)->__name##_val_entry = \
673 debugfs_create_file(__stringify(__name) "_value", \
674 S_IRUSR | S_IWUSR, \
675 (__intf)->register_folder, \
676 (__intf), &rt2x00debug_fop_##__name);\
677 if (IS_ERR((__intf)->__name##_val_entry) \
678 || !(__intf)->__name##_val_entry) \
679 goto exit; \
680 })
681
682 RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, csr);
683 RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, eeprom);
684 RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, bbp);
685 RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, rf);
686
687 #undef RT2X00DEBUGFS_CREATE_REGISTER_ENTRY
688
689 intf->queue_folder =
690 debugfs_create_dir("queue", intf->driver_folder);
691 if (IS_ERR(intf->queue_folder) || !intf->queue_folder)
692 goto exit;
693
694 intf->queue_frame_dump_entry =
695 debugfs_create_file("dump", S_IRUSR, intf->queue_folder,
696 intf, &rt2x00debug_fop_queue_dump);
697 if (IS_ERR(intf->queue_frame_dump_entry)
698 || !intf->queue_frame_dump_entry)
699 goto exit;
700
701 skb_queue_head_init(&intf->frame_dump_skbqueue);
702 init_waitqueue_head(&intf->frame_dump_waitqueue);
703
704 intf->queue_stats_entry =
705 debugfs_create_file("queue", S_IRUSR, intf->queue_folder,
706 intf, &rt2x00debug_fop_queue_stats);
707
708 #ifdef CONFIG_RT2X00_LIB_CRYPTO
709 if (test_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags))
710 intf->crypto_stats_entry =
711 debugfs_create_file("crypto", S_IRUGO, intf->queue_folder,
712 intf, &rt2x00debug_fop_crypto_stats);
713 #endif
714
715 return;
716
717 exit:
718 rt2x00debug_deregister(rt2x00dev);
719 ERROR(rt2x00dev, "Failed to register debug handler.\n");
720 }
721
rt2x00debug_deregister(struct rt2x00_dev * rt2x00dev)722 void rt2x00debug_deregister(struct rt2x00_dev *rt2x00dev)
723 {
724 struct rt2x00debug_intf *intf = rt2x00dev->debugfs_intf;
725
726 if (unlikely(!intf))
727 return;
728
729 skb_queue_purge(&intf->frame_dump_skbqueue);
730
731 #ifdef CONFIG_RT2X00_LIB_CRYPTO
732 debugfs_remove(intf->crypto_stats_entry);
733 #endif
734 debugfs_remove(intf->queue_stats_entry);
735 debugfs_remove(intf->queue_frame_dump_entry);
736 debugfs_remove(intf->queue_folder);
737 debugfs_remove(intf->rf_val_entry);
738 debugfs_remove(intf->rf_off_entry);
739 debugfs_remove(intf->bbp_val_entry);
740 debugfs_remove(intf->bbp_off_entry);
741 debugfs_remove(intf->eeprom_val_entry);
742 debugfs_remove(intf->eeprom_off_entry);
743 debugfs_remove(intf->csr_val_entry);
744 debugfs_remove(intf->csr_off_entry);
745 debugfs_remove(intf->register_folder);
746 debugfs_remove(intf->dev_flags);
747 debugfs_remove(intf->chipset_entry);
748 debugfs_remove(intf->driver_entry);
749 debugfs_remove(intf->driver_folder);
750 kfree(intf->chipset_blob.data);
751 kfree(intf->driver_blob.data);
752 kfree(intf);
753
754 rt2x00dev->debugfs_intf = NULL;
755 }
756