rt2x00: Split rt2x00dev->flags
[linux-2.6.git] / drivers / net / wireless / rt2x00 / rt2x00debug.c
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 state flags file
67          *   - device capability flags file
68          *   - register folder
69          *     - csr offset/value files
70          *     - eeprom offset/value files
71          *     - bbp offset/value files
72          *     - rf offset/value files
73          *   - queue folder
74          *     - frame dump file
75          *     - queue stats file
76          *     - crypto stats file
77          */
78         struct dentry *driver_folder;
79         struct dentry *driver_entry;
80         struct dentry *chipset_entry;
81         struct dentry *dev_flags;
82         struct dentry *cap_flags;
83         struct dentry *register_folder;
84         struct dentry *csr_off_entry;
85         struct dentry *csr_val_entry;
86         struct dentry *eeprom_off_entry;
87         struct dentry *eeprom_val_entry;
88         struct dentry *bbp_off_entry;
89         struct dentry *bbp_val_entry;
90         struct dentry *rf_off_entry;
91         struct dentry *rf_val_entry;
92         struct dentry *queue_folder;
93         struct dentry *queue_frame_dump_entry;
94         struct dentry *queue_stats_entry;
95         struct dentry *crypto_stats_entry;
96
97         /*
98          * The frame dump file only allows a single reader,
99          * so we need to store the current state here.
100          */
101         unsigned long frame_dump_flags;
102 #define FRAME_DUMP_FILE_OPEN    1
103
104         /*
105          * We queue each frame before dumping it to the user,
106          * per read command we will pass a single skb structure
107          * so we should be prepared to queue multiple sk buffers
108          * before sending it to userspace.
109          */
110         struct sk_buff_head frame_dump_skbqueue;
111         wait_queue_head_t frame_dump_waitqueue;
112
113         /*
114          * HW crypto statistics.
115          * All statistics are stored separately per cipher type.
116          */
117         struct rt2x00debug_crypto crypto_stats[CIPHER_MAX];
118
119         /*
120          * Driver and chipset files will use a data buffer
121          * that has been created in advance. This will simplify
122          * the code since we can use the debugfs functions.
123          */
124         struct debugfs_blob_wrapper driver_blob;
125         struct debugfs_blob_wrapper chipset_blob;
126
127         /*
128          * Requested offset for each register type.
129          */
130         unsigned int offset_csr;
131         unsigned int offset_eeprom;
132         unsigned int offset_bbp;
133         unsigned int offset_rf;
134 };
135
136 void rt2x00debug_update_crypto(struct rt2x00_dev *rt2x00dev,
137                                struct rxdone_entry_desc *rxdesc)
138 {
139         struct rt2x00debug_intf *intf = rt2x00dev->debugfs_intf;
140         enum cipher cipher = rxdesc->cipher;
141         enum rx_crypto status = rxdesc->cipher_status;
142
143         if (cipher == CIPHER_TKIP_NO_MIC)
144                 cipher = CIPHER_TKIP;
145         if (cipher == CIPHER_NONE || cipher >= CIPHER_MAX)
146                 return;
147
148         /* Remove CIPHER_NONE index */
149         cipher--;
150
151         intf->crypto_stats[cipher].success += (status == RX_CRYPTO_SUCCESS);
152         intf->crypto_stats[cipher].icv_error += (status == RX_CRYPTO_FAIL_ICV);
153         intf->crypto_stats[cipher].mic_error += (status == RX_CRYPTO_FAIL_MIC);
154         intf->crypto_stats[cipher].key_error += (status == RX_CRYPTO_FAIL_KEY);
155 }
156
157 void rt2x00debug_dump_frame(struct rt2x00_dev *rt2x00dev,
158                             enum rt2x00_dump_type type, struct sk_buff *skb)
159 {
160         struct rt2x00debug_intf *intf = rt2x00dev->debugfs_intf;
161         struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb);
162         struct sk_buff *skbcopy;
163         struct rt2x00dump_hdr *dump_hdr;
164         struct timeval timestamp;
165         u32 data_len;
166
167         if (likely(!test_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags)))
168                 return;
169
170         do_gettimeofday(&timestamp);
171
172         if (skb_queue_len(&intf->frame_dump_skbqueue) > 20) {
173                 DEBUG(rt2x00dev, "txrx dump queue length exceeded.\n");
174                 return;
175         }
176
177         data_len = skb->len;
178         if (skbdesc->flags & SKBDESC_DESC_IN_SKB)
179                 data_len -= skbdesc->desc_len;
180
181         skbcopy = alloc_skb(sizeof(*dump_hdr) + skbdesc->desc_len + data_len,
182                             GFP_ATOMIC);
183         if (!skbcopy) {
184                 DEBUG(rt2x00dev, "Failed to copy skb for dump.\n");
185                 return;
186         }
187
188         dump_hdr = (struct rt2x00dump_hdr *)skb_put(skbcopy, sizeof(*dump_hdr));
189         dump_hdr->version = cpu_to_le32(DUMP_HEADER_VERSION);
190         dump_hdr->header_length = cpu_to_le32(sizeof(*dump_hdr));
191         dump_hdr->desc_length = cpu_to_le32(skbdesc->desc_len);
192         dump_hdr->data_length = cpu_to_le32(data_len);
193         dump_hdr->chip_rt = cpu_to_le16(rt2x00dev->chip.rt);
194         dump_hdr->chip_rf = cpu_to_le16(rt2x00dev->chip.rf);
195         dump_hdr->chip_rev = cpu_to_le16(rt2x00dev->chip.rev);
196         dump_hdr->type = cpu_to_le16(type);
197         dump_hdr->queue_index = skbdesc->entry->queue->qid;
198         dump_hdr->entry_index = skbdesc->entry->entry_idx;
199         dump_hdr->timestamp_sec = cpu_to_le32(timestamp.tv_sec);
200         dump_hdr->timestamp_usec = cpu_to_le32(timestamp.tv_usec);
201
202         if (!(skbdesc->flags & SKBDESC_DESC_IN_SKB))
203                 memcpy(skb_put(skbcopy, skbdesc->desc_len), skbdesc->desc,
204                        skbdesc->desc_len);
205         memcpy(skb_put(skbcopy, skb->len), skb->data, skb->len);
206
207         skb_queue_tail(&intf->frame_dump_skbqueue, skbcopy);
208         wake_up_interruptible(&intf->frame_dump_waitqueue);
209
210         /*
211          * Verify that the file has not been closed while we were working.
212          */
213         if (!test_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags))
214                 skb_queue_purge(&intf->frame_dump_skbqueue);
215 }
216 EXPORT_SYMBOL_GPL(rt2x00debug_dump_frame);
217
218 static int rt2x00debug_file_open(struct inode *inode, struct file *file)
219 {
220         struct rt2x00debug_intf *intf = inode->i_private;
221
222         file->private_data = inode->i_private;
223
224         if (!try_module_get(intf->debug->owner))
225                 return -EBUSY;
226
227         return 0;
228 }
229
230 static int rt2x00debug_file_release(struct inode *inode, struct file *file)
231 {
232         struct rt2x00debug_intf *intf = file->private_data;
233
234         module_put(intf->debug->owner);
235
236         return 0;
237 }
238
239 static int rt2x00debug_open_queue_dump(struct inode *inode, struct file *file)
240 {
241         struct rt2x00debug_intf *intf = inode->i_private;
242         int retval;
243
244         retval = rt2x00debug_file_open(inode, file);
245         if (retval)
246                 return retval;
247
248         if (test_and_set_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags)) {
249                 rt2x00debug_file_release(inode, file);
250                 return -EBUSY;
251         }
252
253         return 0;
254 }
255
256 static int rt2x00debug_release_queue_dump(struct inode *inode, struct file *file)
257 {
258         struct rt2x00debug_intf *intf = inode->i_private;
259
260         skb_queue_purge(&intf->frame_dump_skbqueue);
261
262         clear_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags);
263
264         return rt2x00debug_file_release(inode, file);
265 }
266
267 static ssize_t rt2x00debug_read_queue_dump(struct file *file,
268                                            char __user *buf,
269                                            size_t length,
270                                            loff_t *offset)
271 {
272         struct rt2x00debug_intf *intf = file->private_data;
273         struct sk_buff *skb;
274         size_t status;
275         int retval;
276
277         if (file->f_flags & O_NONBLOCK)
278                 return -EAGAIN;
279
280         retval =
281             wait_event_interruptible(intf->frame_dump_waitqueue,
282                                      (skb =
283                                      skb_dequeue(&intf->frame_dump_skbqueue)));
284         if (retval)
285                 return retval;
286
287         status = min((size_t)skb->len, length);
288         if (copy_to_user(buf, skb->data, status)) {
289                 status = -EFAULT;
290                 goto exit;
291         }
292
293         *offset += status;
294
295 exit:
296         kfree_skb(skb);
297
298         return status;
299 }
300
301 static unsigned int rt2x00debug_poll_queue_dump(struct file *file,
302                                                 poll_table *wait)
303 {
304         struct rt2x00debug_intf *intf = file->private_data;
305
306         poll_wait(file, &intf->frame_dump_waitqueue, wait);
307
308         if (!skb_queue_empty(&intf->frame_dump_skbqueue))
309                 return POLLOUT | POLLWRNORM;
310
311         return 0;
312 }
313
314 static const struct file_operations rt2x00debug_fop_queue_dump = {
315         .owner          = THIS_MODULE,
316         .read           = rt2x00debug_read_queue_dump,
317         .poll           = rt2x00debug_poll_queue_dump,
318         .open           = rt2x00debug_open_queue_dump,
319         .release        = rt2x00debug_release_queue_dump,
320         .llseek         = default_llseek,
321 };
322
323 static ssize_t rt2x00debug_read_queue_stats(struct file *file,
324                                             char __user *buf,
325                                             size_t length,
326                                             loff_t *offset)
327 {
328         struct rt2x00debug_intf *intf = file->private_data;
329         struct data_queue *queue;
330         unsigned long irqflags;
331         unsigned int lines = 1 + intf->rt2x00dev->data_queues;
332         size_t size;
333         char *data;
334         char *temp;
335
336         if (*offset)
337                 return 0;
338
339         data = kcalloc(lines, MAX_LINE_LENGTH, GFP_KERNEL);
340         if (!data)
341                 return -ENOMEM;
342
343         temp = data +
344             sprintf(data, "qid\tflags\t\tcount\tlimit\tlength\tindex\tdma done\tdone\n");
345
346         queue_for_each(intf->rt2x00dev, queue) {
347                 spin_lock_irqsave(&queue->index_lock, irqflags);
348
349                 temp += sprintf(temp, "%d\t0x%.8x\t%d\t%d\t%d\t%d\t%d\t\t%d\n",
350                                 queue->qid, (unsigned int)queue->flags,
351                                 queue->count, queue->limit, queue->length,
352                                 queue->index[Q_INDEX],
353                                 queue->index[Q_INDEX_DMA_DONE],
354                                 queue->index[Q_INDEX_DONE]);
355
356                 spin_unlock_irqrestore(&queue->index_lock, irqflags);
357         }
358
359         size = strlen(data);
360         size = min(size, length);
361
362         if (copy_to_user(buf, data, size)) {
363                 kfree(data);
364                 return -EFAULT;
365         }
366
367         kfree(data);
368
369         *offset += size;
370         return size;
371 }
372
373 static const struct file_operations rt2x00debug_fop_queue_stats = {
374         .owner          = THIS_MODULE,
375         .read           = rt2x00debug_read_queue_stats,
376         .open           = rt2x00debug_file_open,
377         .release        = rt2x00debug_file_release,
378         .llseek         = default_llseek,
379 };
380
381 #ifdef CONFIG_RT2X00_LIB_CRYPTO
382 static ssize_t rt2x00debug_read_crypto_stats(struct file *file,
383                                              char __user *buf,
384                                              size_t length,
385                                              loff_t *offset)
386 {
387         struct rt2x00debug_intf *intf = file->private_data;
388         static const char * const name[] = { "WEP64", "WEP128", "TKIP", "AES" };
389         char *data;
390         char *temp;
391         size_t size;
392         unsigned int i;
393
394         if (*offset)
395                 return 0;
396
397         data = kzalloc((1 + CIPHER_MAX) * MAX_LINE_LENGTH, GFP_KERNEL);
398         if (!data)
399                 return -ENOMEM;
400
401         temp = data;
402         temp += sprintf(data, "cipher\tsuccess\ticv err\tmic err\tkey err\n");
403
404         for (i = 0; i < CIPHER_MAX; i++) {
405                 temp += sprintf(temp, "%s\t%lu\t%lu\t%lu\t%lu\n", name[i],
406                                 intf->crypto_stats[i].success,
407                                 intf->crypto_stats[i].icv_error,
408                                 intf->crypto_stats[i].mic_error,
409                                 intf->crypto_stats[i].key_error);
410         }
411
412         size = strlen(data);
413         size = min(size, length);
414
415         if (copy_to_user(buf, data, size)) {
416                 kfree(data);
417                 return -EFAULT;
418         }
419
420         kfree(data);
421
422         *offset += size;
423         return size;
424 }
425
426 static const struct file_operations rt2x00debug_fop_crypto_stats = {
427         .owner          = THIS_MODULE,
428         .read           = rt2x00debug_read_crypto_stats,
429         .open           = rt2x00debug_file_open,
430         .release        = rt2x00debug_file_release,
431         .llseek         = default_llseek,
432 };
433 #endif
434
435 #define RT2X00DEBUGFS_OPS_READ(__name, __format, __type)        \
436 static ssize_t rt2x00debug_read_##__name(struct file *file,     \
437                                          char __user *buf,      \
438                                          size_t length,         \
439                                          loff_t *offset)        \
440 {                                                               \
441         struct rt2x00debug_intf *intf = file->private_data;     \
442         const struct rt2x00debug *debug = intf->debug;          \
443         char line[16];                                          \
444         size_t size;                                            \
445         unsigned int index = intf->offset_##__name;             \
446         __type value;                                           \
447                                                                 \
448         if (*offset)                                            \
449                 return 0;                                       \
450                                                                 \
451         if (index >= debug->__name.word_count)                  \
452                 return -EINVAL;                                 \
453                                                                 \
454         index += (debug->__name.word_base /                     \
455                   debug->__name.word_size);                     \
456                                                                 \
457         if (debug->__name.flags & RT2X00DEBUGFS_OFFSET)         \
458                 index *= debug->__name.word_size;               \
459                                                                 \
460         debug->__name.read(intf->rt2x00dev, index, &value);     \
461                                                                 \
462         size = sprintf(line, __format, value);                  \
463                                                                 \
464         if (copy_to_user(buf, line, size))                      \
465                 return -EFAULT;                                 \
466                                                                 \
467         *offset += size;                                        \
468         return size;                                            \
469 }
470
471 #define RT2X00DEBUGFS_OPS_WRITE(__name, __type)                 \
472 static ssize_t rt2x00debug_write_##__name(struct file *file,    \
473                                           const char __user *buf,\
474                                           size_t length,        \
475                                           loff_t *offset)       \
476 {                                                               \
477         struct rt2x00debug_intf *intf = file->private_data;     \
478         const struct rt2x00debug *debug = intf->debug;          \
479         char line[16];                                          \
480         size_t size;                                            \
481         unsigned int index = intf->offset_##__name;             \
482         __type value;                                           \
483                                                                 \
484         if (*offset)                                            \
485                 return 0;                                       \
486                                                                 \
487         if (index >= debug->__name.word_count)                  \
488                 return -EINVAL;                                 \
489                                                                 \
490         if (length > sizeof(line))                              \
491                 return -EINVAL;                                 \
492                                                                 \
493         if (copy_from_user(line, buf, length))                  \
494                 return -EFAULT;                                 \
495                                                                 \
496         size = strlen(line);                                    \
497         value = simple_strtoul(line, NULL, 0);                  \
498                                                                 \
499         index += (debug->__name.word_base /                     \
500                   debug->__name.word_size);                     \
501                                                                 \
502         if (debug->__name.flags & RT2X00DEBUGFS_OFFSET)         \
503                 index *= debug->__name.word_size;               \
504                                                                 \
505         debug->__name.write(intf->rt2x00dev, index, value);     \
506                                                                 \
507         *offset += size;                                        \
508         return size;                                            \
509 }
510
511 #define RT2X00DEBUGFS_OPS(__name, __format, __type)             \
512 RT2X00DEBUGFS_OPS_READ(__name, __format, __type);               \
513 RT2X00DEBUGFS_OPS_WRITE(__name, __type);                        \
514                                                                 \
515 static const struct file_operations rt2x00debug_fop_##__name = {\
516         .owner          = THIS_MODULE,                          \
517         .read           = rt2x00debug_read_##__name,            \
518         .write          = rt2x00debug_write_##__name,           \
519         .open           = rt2x00debug_file_open,                \
520         .release        = rt2x00debug_file_release,             \
521         .llseek         = generic_file_llseek,                  \
522 };
523
524 RT2X00DEBUGFS_OPS(csr, "0x%.8x\n", u32);
525 RT2X00DEBUGFS_OPS(eeprom, "0x%.4x\n", u16);
526 RT2X00DEBUGFS_OPS(bbp, "0x%.2x\n", u8);
527 RT2X00DEBUGFS_OPS(rf, "0x%.8x\n", u32);
528
529 static ssize_t rt2x00debug_read_dev_flags(struct file *file,
530                                           char __user *buf,
531                                           size_t length,
532                                           loff_t *offset)
533 {
534         struct rt2x00debug_intf *intf = file->private_data;
535         char line[16];
536         size_t size;
537
538         if (*offset)
539                 return 0;
540
541         size = sprintf(line, "0x%.8x\n", (unsigned int)intf->rt2x00dev->flags);
542
543         if (copy_to_user(buf, line, size))
544                 return -EFAULT;
545
546         *offset += size;
547         return size;
548 }
549
550 static const struct file_operations rt2x00debug_fop_dev_flags = {
551         .owner          = THIS_MODULE,
552         .read           = rt2x00debug_read_dev_flags,
553         .open           = rt2x00debug_file_open,
554         .release        = rt2x00debug_file_release,
555         .llseek         = default_llseek,
556 };
557
558 static ssize_t rt2x00debug_read_cap_flags(struct file *file,
559                                           char __user *buf,
560                                           size_t length,
561                                           loff_t *offset)
562 {
563         struct rt2x00debug_intf *intf = file->private_data;
564         char line[16];
565         size_t size;
566
567         if (*offset)
568                 return 0;
569
570         size = sprintf(line, "0x%.8x\n", (unsigned int)intf->rt2x00dev->cap_flags);
571
572         if (copy_to_user(buf, line, size))
573                 return -EFAULT;
574
575         *offset += size;
576         return size;
577 }
578
579 static const struct file_operations rt2x00debug_fop_cap_flags = {
580         .owner          = THIS_MODULE,
581         .read           = rt2x00debug_read_cap_flags,
582         .open           = rt2x00debug_file_open,
583         .release        = rt2x00debug_file_release,
584         .llseek         = default_llseek,
585 };
586
587 static struct dentry *rt2x00debug_create_file_driver(const char *name,
588                                                      struct rt2x00debug_intf
589                                                      *intf,
590                                                      struct debugfs_blob_wrapper
591                                                      *blob)
592 {
593         char *data;
594
595         data = kzalloc(3 * MAX_LINE_LENGTH, GFP_KERNEL);
596         if (!data)
597                 return NULL;
598
599         blob->data = data;
600         data += sprintf(data, "driver:\t%s\n", intf->rt2x00dev->ops->name);
601         data += sprintf(data, "version:\t%s\n", DRV_VERSION);
602         blob->size = strlen(blob->data);
603
604         return debugfs_create_blob(name, S_IRUSR, intf->driver_folder, blob);
605 }
606
607 static struct dentry *rt2x00debug_create_file_chipset(const char *name,
608                                                       struct rt2x00debug_intf
609                                                       *intf,
610                                                       struct
611                                                       debugfs_blob_wrapper
612                                                       *blob)
613 {
614         const struct rt2x00debug *debug = intf->debug;
615         char *data;
616
617         data = kzalloc(8 * MAX_LINE_LENGTH, GFP_KERNEL);
618         if (!data)
619                 return NULL;
620
621         blob->data = data;
622         data += sprintf(data, "rt chip:\t%04x\n", intf->rt2x00dev->chip.rt);
623         data += sprintf(data, "rf chip:\t%04x\n", intf->rt2x00dev->chip.rf);
624         data += sprintf(data, "revision:\t%04x\n", intf->rt2x00dev->chip.rev);
625         data += sprintf(data, "\n");
626         data += sprintf(data, "register\tbase\twords\twordsize\n");
627         data += sprintf(data, "csr\t%d\t%d\t%d\n",
628                         debug->csr.word_base,
629                         debug->csr.word_count,
630                         debug->csr.word_size);
631         data += sprintf(data, "eeprom\t%d\t%d\t%d\n",
632                         debug->eeprom.word_base,
633                         debug->eeprom.word_count,
634                         debug->eeprom.word_size);
635         data += sprintf(data, "bbp\t%d\t%d\t%d\n",
636                         debug->bbp.word_base,
637                         debug->bbp.word_count,
638                         debug->bbp.word_size);
639         data += sprintf(data, "rf\t%d\t%d\t%d\n",
640                         debug->rf.word_base,
641                         debug->rf.word_count,
642                         debug->rf.word_size);
643         blob->size = strlen(blob->data);
644
645         return debugfs_create_blob(name, S_IRUSR, intf->driver_folder, blob);
646 }
647
648 void rt2x00debug_register(struct rt2x00_dev *rt2x00dev)
649 {
650         const struct rt2x00debug *debug = rt2x00dev->ops->debugfs;
651         struct rt2x00debug_intf *intf;
652
653         intf = kzalloc(sizeof(struct rt2x00debug_intf), GFP_KERNEL);
654         if (!intf) {
655                 ERROR(rt2x00dev, "Failed to allocate debug handler.\n");
656                 return;
657         }
658
659         intf->debug = debug;
660         intf->rt2x00dev = rt2x00dev;
661         rt2x00dev->debugfs_intf = intf;
662
663         intf->driver_folder =
664             debugfs_create_dir(intf->rt2x00dev->ops->name,
665                                rt2x00dev->hw->wiphy->debugfsdir);
666         if (IS_ERR(intf->driver_folder) || !intf->driver_folder)
667                 goto exit;
668
669         intf->driver_entry =
670             rt2x00debug_create_file_driver("driver", intf, &intf->driver_blob);
671         if (IS_ERR(intf->driver_entry) || !intf->driver_entry)
672                 goto exit;
673
674         intf->chipset_entry =
675             rt2x00debug_create_file_chipset("chipset",
676                                             intf, &intf->chipset_blob);
677         if (IS_ERR(intf->chipset_entry) || !intf->chipset_entry)
678                 goto exit;
679
680         intf->dev_flags = debugfs_create_file("dev_flags", S_IRUSR,
681                                               intf->driver_folder, intf,
682                                               &rt2x00debug_fop_dev_flags);
683         if (IS_ERR(intf->dev_flags) || !intf->dev_flags)
684                 goto exit;
685
686         intf->cap_flags = debugfs_create_file("cap_flags", S_IRUSR,
687                                               intf->driver_folder, intf,
688                                               &rt2x00debug_fop_cap_flags);
689         if (IS_ERR(intf->cap_flags) || !intf->cap_flags)
690                 goto exit;
691
692         intf->register_folder =
693             debugfs_create_dir("register", intf->driver_folder);
694         if (IS_ERR(intf->register_folder) || !intf->register_folder)
695                 goto exit;
696
697 #define RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(__intf, __name)     \
698 ({                                                              \
699         (__intf)->__name##_off_entry =                          \
700             debugfs_create_u32(__stringify(__name) "_offset",   \
701                                S_IRUSR | S_IWUSR,               \
702                                (__intf)->register_folder,       \
703                                &(__intf)->offset_##__name);     \
704         if (IS_ERR((__intf)->__name##_off_entry)                \
705                         || !(__intf)->__name##_off_entry)       \
706                 goto exit;                                      \
707                                                                 \
708         (__intf)->__name##_val_entry =                          \
709             debugfs_create_file(__stringify(__name) "_value",   \
710                                 S_IRUSR | S_IWUSR,              \
711                                 (__intf)->register_folder,      \
712                                 (__intf), &rt2x00debug_fop_##__name);\
713         if (IS_ERR((__intf)->__name##_val_entry)                \
714                         || !(__intf)->__name##_val_entry)       \
715                 goto exit;                                      \
716 })
717
718         RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, csr);
719         RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, eeprom);
720         RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, bbp);
721         RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, rf);
722
723 #undef RT2X00DEBUGFS_CREATE_REGISTER_ENTRY
724
725         intf->queue_folder =
726             debugfs_create_dir("queue", intf->driver_folder);
727         if (IS_ERR(intf->queue_folder) || !intf->queue_folder)
728                 goto exit;
729
730         intf->queue_frame_dump_entry =
731             debugfs_create_file("dump", S_IRUSR, intf->queue_folder,
732                                 intf, &rt2x00debug_fop_queue_dump);
733         if (IS_ERR(intf->queue_frame_dump_entry)
734                 || !intf->queue_frame_dump_entry)
735                 goto exit;
736
737         skb_queue_head_init(&intf->frame_dump_skbqueue);
738         init_waitqueue_head(&intf->frame_dump_waitqueue);
739
740         intf->queue_stats_entry =
741             debugfs_create_file("queue", S_IRUSR, intf->queue_folder,
742                                 intf, &rt2x00debug_fop_queue_stats);
743
744 #ifdef CONFIG_RT2X00_LIB_CRYPTO
745         if (test_bit(CAPABILITY_HW_CRYPTO, &rt2x00dev->cap_flags))
746                 intf->crypto_stats_entry =
747                     debugfs_create_file("crypto", S_IRUGO, intf->queue_folder,
748                                         intf, &rt2x00debug_fop_crypto_stats);
749 #endif
750
751         return;
752
753 exit:
754         rt2x00debug_deregister(rt2x00dev);
755         ERROR(rt2x00dev, "Failed to register debug handler.\n");
756 }
757
758 void rt2x00debug_deregister(struct rt2x00_dev *rt2x00dev)
759 {
760         struct rt2x00debug_intf *intf = rt2x00dev->debugfs_intf;
761
762         if (unlikely(!intf))
763                 return;
764
765         skb_queue_purge(&intf->frame_dump_skbqueue);
766
767 #ifdef CONFIG_RT2X00_LIB_CRYPTO
768         debugfs_remove(intf->crypto_stats_entry);
769 #endif
770         debugfs_remove(intf->queue_stats_entry);
771         debugfs_remove(intf->queue_frame_dump_entry);
772         debugfs_remove(intf->queue_folder);
773         debugfs_remove(intf->rf_val_entry);
774         debugfs_remove(intf->rf_off_entry);
775         debugfs_remove(intf->bbp_val_entry);
776         debugfs_remove(intf->bbp_off_entry);
777         debugfs_remove(intf->eeprom_val_entry);
778         debugfs_remove(intf->eeprom_off_entry);
779         debugfs_remove(intf->csr_val_entry);
780         debugfs_remove(intf->csr_off_entry);
781         debugfs_remove(intf->register_folder);
782         debugfs_remove(intf->dev_flags);
783         debugfs_remove(intf->cap_flags);
784         debugfs_remove(intf->chipset_entry);
785         debugfs_remove(intf->driver_entry);
786         debugfs_remove(intf->driver_folder);
787         kfree(intf->chipset_blob.data);
788         kfree(intf->driver_blob.data);
789         kfree(intf);
790
791         rt2x00dev->debugfs_intf = NULL;
792 }