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OMAPDSS: VENC: fix NULL pointer dereference in DSS2 VENC sysfs debug attr on OMAP4
[zen-stable.git] / drivers / net / wireless / b43 / debugfs.c
blobe751fdee89b25fc39eb2d41009d8e9ca07e7448a
1 /*
2
3 Broadcom B43 wireless driver
4
5 debugfs driver debugging code
6
7 Copyright (c) 2005-2007 Michael Buesch <m@bues.ch>
8
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program; see the file COPYING. If not, write to
21 the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
22 Boston, MA 02110-1301, USA.
23
24 */
25
26 #include <linux/fs.h>
27 #include <linux/debugfs.h>
28 #include <linux/slab.h>
29 #include <linux/netdevice.h>
30 #include <linux/pci.h>
31 #include <linux/mutex.h>
32
33 #include "b43.h"
34 #include "main.h"
35 #include "debugfs.h"
36 #include "dma.h"
37 #include "xmit.h"
38
39
40 /* The root directory. */
41 static struct dentry *rootdir;
42
43 struct b43_debugfs_fops {
44 ssize_t (*read)(struct b43_wldev *dev, char *buf, size_t bufsize);
45 int (*write)(struct b43_wldev *dev, const char *buf, size_t count);
46 struct file_operations fops;
47 /* Offset of struct b43_dfs_file in struct b43_dfsentry */
48 size_t file_struct_offset;
49 };
50
51 static inline
52 struct b43_dfs_file *fops_to_dfs_file(struct b43_wldev *dev,
53 const struct b43_debugfs_fops *dfops)
54 {
55 void *p;
56
57 p = dev->dfsentry;
58 p += dfops->file_struct_offset;
59
60 return p;
61 }
62
63
64 #define fappend(fmt, x...) \
65 do { \
66 if (bufsize - count) \
67 count += snprintf(buf + count, \
68 bufsize - count, \
69 fmt , ##x); \
70 else \
71 printk(KERN_ERR "b43: fappend overflow\n"); \
72 } while (0)
73
74
75 /* The biggest address values for SHM access from the debugfs files. */
76 #define B43_MAX_SHM_ROUTING 4
77 #define B43_MAX_SHM_ADDR 0xFFFF
78
79 static ssize_t shm16read__read_file(struct b43_wldev *dev,
80 char *buf, size_t bufsize)
81 {
82 ssize_t count = 0;
83 unsigned int routing, addr;
84 u16 val;
85
86 routing = dev->dfsentry->shm16read_routing_next;
87 addr = dev->dfsentry->shm16read_addr_next;
88 if ((routing > B43_MAX_SHM_ROUTING) ||
89 (addr > B43_MAX_SHM_ADDR))
90 return -EDESTADDRREQ;
91
92 val = b43_shm_read16(dev, routing, addr);
93 fappend("0x%04X\n", val);
94
95 return count;
96 }
97
98 static int shm16read__write_file(struct b43_wldev *dev,
99 const char *buf, size_t count)
100 {
101 unsigned int routing, addr;
102 int res;
103
104 res = sscanf(buf, "0x%X 0x%X", &routing, &addr);
105 if (res != 2)
106 return -EINVAL;
107 if (routing > B43_MAX_SHM_ROUTING)
108 return -EADDRNOTAVAIL;
109 if (addr > B43_MAX_SHM_ADDR)
110 return -EADDRNOTAVAIL;
111 if (routing == B43_SHM_SHARED) {
112 if ((addr % 2) != 0)
113 return -EADDRNOTAVAIL;
114 }
115
116 dev->dfsentry->shm16read_routing_next = routing;
117 dev->dfsentry->shm16read_addr_next = addr;
118
119 return 0;
120 }
121
122 static int shm16write__write_file(struct b43_wldev *dev,
123 const char *buf, size_t count)
124 {
125 unsigned int routing, addr, mask, set;
126 u16 val;
127 int res;
128
129 res = sscanf(buf, "0x%X 0x%X 0x%X 0x%X",
130 &routing, &addr, &mask, &set);
131 if (res != 4)
132 return -EINVAL;
133 if (routing > B43_MAX_SHM_ROUTING)
134 return -EADDRNOTAVAIL;
135 if (addr > B43_MAX_SHM_ADDR)
136 return -EADDRNOTAVAIL;
137 if (routing == B43_SHM_SHARED) {
138 if ((addr % 2) != 0)
139 return -EADDRNOTAVAIL;
140 }
141 if ((mask > 0xFFFF) || (set > 0xFFFF))
142 return -E2BIG;
143
144 if (mask == 0)
145 val = 0;
146 else
147 val = b43_shm_read16(dev, routing, addr);
148 val &= mask;
149 val |= set;
150 b43_shm_write16(dev, routing, addr, val);
151
152 return 0;
153 }
154
155 static ssize_t shm32read__read_file(struct b43_wldev *dev,
156 char *buf, size_t bufsize)
157 {
158 ssize_t count = 0;
159 unsigned int routing, addr;
160 u32 val;
161
162 routing = dev->dfsentry->shm32read_routing_next;
163 addr = dev->dfsentry->shm32read_addr_next;
164 if ((routing > B43_MAX_SHM_ROUTING) ||
165 (addr > B43_MAX_SHM_ADDR))
166 return -EDESTADDRREQ;
167
168 val = b43_shm_read32(dev, routing, addr);
169 fappend("0x%08X\n", val);
170
171 return count;
172 }
173
174 static int shm32read__write_file(struct b43_wldev *dev,
175 const char *buf, size_t count)
176 {
177 unsigned int routing, addr;
178 int res;
179
180 res = sscanf(buf, "0x%X 0x%X", &routing, &addr);
181 if (res != 2)
182 return -EINVAL;
183 if (routing > B43_MAX_SHM_ROUTING)
184 return -EADDRNOTAVAIL;
185 if (addr > B43_MAX_SHM_ADDR)
186 return -EADDRNOTAVAIL;
187 if (routing == B43_SHM_SHARED) {
188 if ((addr % 2) != 0)
189 return -EADDRNOTAVAIL;
190 }
191
192 dev->dfsentry->shm32read_routing_next = routing;
193 dev->dfsentry->shm32read_addr_next = addr;
194
195 return 0;
196 }
197
198 static int shm32write__write_file(struct b43_wldev *dev,
199 const char *buf, size_t count)
200 {
201 unsigned int routing, addr, mask, set;
202 u32 val;
203 int res;
204
205 res = sscanf(buf, "0x%X 0x%X 0x%X 0x%X",
206 &routing, &addr, &mask, &set);
207 if (res != 4)
208 return -EINVAL;
209 if (routing > B43_MAX_SHM_ROUTING)
210 return -EADDRNOTAVAIL;
211 if (addr > B43_MAX_SHM_ADDR)
212 return -EADDRNOTAVAIL;
213 if (routing == B43_SHM_SHARED) {
214 if ((addr % 2) != 0)
215 return -EADDRNOTAVAIL;
216 }
217 if ((mask > 0xFFFFFFFF) || (set > 0xFFFFFFFF))
218 return -E2BIG;
219
220 if (mask == 0)
221 val = 0;
222 else
223 val = b43_shm_read32(dev, routing, addr);
224 val &= mask;
225 val |= set;
226 b43_shm_write32(dev, routing, addr, val);
227
228 return 0;
229 }
230
231 /* The biggest MMIO address that we allow access to from the debugfs files. */
232 #define B43_MAX_MMIO_ACCESS (0xF00 - 1)
233
234 static ssize_t mmio16read__read_file(struct b43_wldev *dev,
235 char *buf, size_t bufsize)
236 {
237 ssize_t count = 0;
238 unsigned int addr;
239 u16 val;
240
241 addr = dev->dfsentry->mmio16read_next;
242 if (addr > B43_MAX_MMIO_ACCESS)
243 return -EDESTADDRREQ;
244
245 val = b43_read16(dev, addr);
246 fappend("0x%04X\n", val);
247
248 return count;
249 }
250
251 static int mmio16read__write_file(struct b43_wldev *dev,
252 const char *buf, size_t count)
253 {
254 unsigned int addr;
255 int res;
256
257 res = sscanf(buf, "0x%X", &addr);
258 if (res != 1)
259 return -EINVAL;
260 if (addr > B43_MAX_MMIO_ACCESS)
261 return -EADDRNOTAVAIL;
262 if ((addr % 2) != 0)
263 return -EINVAL;
264
265 dev->dfsentry->mmio16read_next = addr;
266
267 return 0;
268 }
269
270 static int mmio16write__write_file(struct b43_wldev *dev,
271 const char *buf, size_t count)
272 {
273 unsigned int addr, mask, set;
274 int res;
275 u16 val;
276
277 res = sscanf(buf, "0x%X 0x%X 0x%X", &addr, &mask, &set);
278 if (res != 3)
279 return -EINVAL;
280 if (addr > B43_MAX_MMIO_ACCESS)
281 return -EADDRNOTAVAIL;
282 if ((mask > 0xFFFF) || (set > 0xFFFF))
283 return -E2BIG;
284 if ((addr % 2) != 0)
285 return -EINVAL;
286
287 if (mask == 0)
288 val = 0;
289 else
290 val = b43_read16(dev, addr);
291 val &= mask;
292 val |= set;
293 b43_write16(dev, addr, val);
294
295 return 0;
296 }
297
298 static ssize_t mmio32read__read_file(struct b43_wldev *dev,
299 char *buf, size_t bufsize)
300 {
301 ssize_t count = 0;
302 unsigned int addr;
303 u32 val;
304
305 addr = dev->dfsentry->mmio32read_next;
306 if (addr > B43_MAX_MMIO_ACCESS)
307 return -EDESTADDRREQ;
308
309 val = b43_read32(dev, addr);
310 fappend("0x%08X\n", val);
311
312 return count;
313 }
314
315 static int mmio32read__write_file(struct b43_wldev *dev,
316 const char *buf, size_t count)
317 {
318 unsigned int addr;
319 int res;
320
321 res = sscanf(buf, "0x%X", &addr);
322 if (res != 1)
323 return -EINVAL;
324 if (addr > B43_MAX_MMIO_ACCESS)
325 return -EADDRNOTAVAIL;
326 if ((addr % 4) != 0)
327 return -EINVAL;
328
329 dev->dfsentry->mmio32read_next = addr;
330
331 return 0;
332 }
333
334 static int mmio32write__write_file(struct b43_wldev *dev,
335 const char *buf, size_t count)
336 {
337 unsigned int addr, mask, set;
338 int res;
339 u32 val;
340
341 res = sscanf(buf, "0x%X 0x%X 0x%X", &addr, &mask, &set);
342 if (res != 3)
343 return -EINVAL;
344 if (addr > B43_MAX_MMIO_ACCESS)
345 return -EADDRNOTAVAIL;
346 if ((mask > 0xFFFFFFFF) || (set > 0xFFFFFFFF))
347 return -E2BIG;
348 if ((addr % 4) != 0)
349 return -EINVAL;
350
351 if (mask == 0)
352 val = 0;
353 else
354 val = b43_read32(dev, addr);
355 val &= mask;
356 val |= set;
357 b43_write32(dev, addr, val);
358
359 return 0;
360 }
361
362 static ssize_t txstat_read_file(struct b43_wldev *dev,
363 char *buf, size_t bufsize)
364 {
365 struct b43_txstatus_log *log = &dev->dfsentry->txstatlog;
366 ssize_t count = 0;
367 int i, idx;
368 struct b43_txstatus *stat;
369
370 if (log->end < 0) {
371 fappend("Nothing transmitted, yet\n");
372 goto out;
373 }
374 fappend("b43 TX status reports:\n\n"
375 "index | cookie | seq | phy_stat | frame_count | "
376 "rts_count | supp_reason | pm_indicated | "
377 "intermediate | for_ampdu | acked\n" "---\n");
378 i = log->end + 1;
379 idx = 0;
380 while (1) {
381 if (i == B43_NR_LOGGED_TXSTATUS)
382 i = 0;
383 stat = &(log->log[i]);
384 if (stat->cookie) {
385 fappend("%03d | "
386 "0x%04X | 0x%04X | 0x%02X | "
387 "0x%X | 0x%X | "
388 "%u | %u | "
389 "%u | %u | %u\n",
390 idx,
391 stat->cookie, stat->seq, stat->phy_stat,
392 stat->frame_count, stat->rts_count,
393 stat->supp_reason, stat->pm_indicated,
394 stat->intermediate, stat->for_ampdu,
395 stat->acked);
396 idx++;
397 }
398 if (i == log->end)
399 break;
400 i++;
401 }
402 out:
403
404 return count;
405 }
406
407 static int restart_write_file(struct b43_wldev *dev,
408 const char *buf, size_t count)
409 {
410 int err = 0;
411
412 if (count > 0 && buf[0] == '1') {
413 b43_controller_restart(dev, "manually restarted");
414 } else
415 err = -EINVAL;
416
417 return err;
418 }
419
420 static unsigned long calc_expire_secs(unsigned long now,
421 unsigned long time,
422 unsigned long expire)
423 {
424 expire = time + expire;
425
426 if (time_after(now, expire))
427 return 0; /* expired */
428 if (expire < now) {
429 /* jiffies wrapped */
430 expire -= MAX_JIFFY_OFFSET;
431 now -= MAX_JIFFY_OFFSET;
432 }
433 B43_WARN_ON(expire < now);
434
435 return (expire - now) / HZ;
436 }
437
438 static ssize_t loctls_read_file(struct b43_wldev *dev,
439 char *buf, size_t bufsize)
440 {
441 ssize_t count = 0;
442 struct b43_txpower_lo_control *lo;
443 int i, err = 0;
444 struct b43_lo_calib *cal;
445 unsigned long now = jiffies;
446 struct b43_phy *phy = &dev->phy;
447
448 if (phy->type != B43_PHYTYPE_G) {
449 fappend("Device is not a G-PHY\n");
450 err = -ENODEV;
451 goto out;
452 }
453 lo = phy->g->lo_control;
454 fappend("-- Local Oscillator calibration data --\n\n");
455 fappend("HW-power-control enabled: %d\n",
456 dev->phy.hardware_power_control);
457 fappend("TX Bias: 0x%02X, TX Magn: 0x%02X (expire in %lu sec)\n",
458 lo->tx_bias, lo->tx_magn,
459 calc_expire_secs(now, lo->txctl_measured_time,
460 B43_LO_TXCTL_EXPIRE));
461 fappend("Power Vector: 0x%08X%08X (expires in %lu sec)\n",
462 (unsigned int)((lo->power_vector & 0xFFFFFFFF00000000ULL) >> 32),
463 (unsigned int)(lo->power_vector & 0x00000000FFFFFFFFULL),
464 calc_expire_secs(now, lo->pwr_vec_read_time,
465 B43_LO_PWRVEC_EXPIRE));
466
467 fappend("\nCalibrated settings:\n");
468 list_for_each_entry(cal, &lo->calib_list, list) {
469 bool active;
470
471 active = (b43_compare_bbatt(&cal->bbatt, &phy->g->bbatt) &&
472 b43_compare_rfatt(&cal->rfatt, &phy->g->rfatt));
473 fappend("BB(%d), RF(%d,%d) -> I=%d, Q=%d "
474 "(expires in %lu sec)%s\n",
475 cal->bbatt.att,
476 cal->rfatt.att, cal->rfatt.with_padmix,
477 cal->ctl.i, cal->ctl.q,
478 calc_expire_secs(now, cal->calib_time,
479 B43_LO_CALIB_EXPIRE),
480 active ? " ACTIVE" : "");
481 }
482
483 fappend("\nUsed RF attenuation values: Value(WithPadmix flag)\n");
484 for (i = 0; i < lo->rfatt_list.len; i++) {
485 fappend("%u(%d), ",
486 lo->rfatt_list.list[i].att,
487 lo->rfatt_list.list[i].with_padmix);
488 }
489 fappend("\n");
490 fappend("\nUsed Baseband attenuation values:\n");
491 for (i = 0; i < lo->bbatt_list.len; i++) {
492 fappend("%u, ",
493 lo->bbatt_list.list[i].att);
494 }
495 fappend("\n");
496
497 out:
498 return err ? err : count;
499 }
500
501 #undef fappend
502
503 static int b43_debugfs_open(struct inode *inode, struct file *file)
504 {
505 file->private_data = inode->i_private;
506 return 0;
507 }
508
509 static ssize_t b43_debugfs_read(struct file *file, char __user *userbuf,
510 size_t count, loff_t *ppos)
511 {
512 struct b43_wldev *dev;
513 struct b43_debugfs_fops *dfops;
514 struct b43_dfs_file *dfile;
515 ssize_t uninitialized_var(ret);
516 char *buf;
517 const size_t bufsize = 1024 * 16; /* 16 kiB buffer */
518 const size_t buforder = get_order(bufsize);
519 int err = 0;
520
521 if (!count)
522 return 0;
523 dev = file->private_data;
524 if (!dev)
525 return -ENODEV;
526
527 mutex_lock(&dev->wl->mutex);
528 if (b43_status(dev) < B43_STAT_INITIALIZED) {
529 err = -ENODEV;
530 goto out_unlock;
531 }
532
533 dfops = container_of(file->f_op, struct b43_debugfs_fops, fops);
534 if (!dfops->read) {
535 err = -ENOSYS;
536 goto out_unlock;
537 }
538 dfile = fops_to_dfs_file(dev, dfops);
539
540 if (!dfile->buffer) {
541 buf = (char *)__get_free_pages(GFP_KERNEL, buforder);
542 if (!buf) {
543 err = -ENOMEM;
544 goto out_unlock;
545 }
546 memset(buf, 0, bufsize);
547 ret = dfops->read(dev, buf, bufsize);
548 if (ret <= 0) {
549 free_pages((unsigned long)buf, buforder);
550 err = ret;
551 goto out_unlock;
552 }
553 dfile->data_len = ret;
554 dfile->buffer = buf;
555 }
556
557 ret = simple_read_from_buffer(userbuf, count, ppos,
558 dfile->buffer,
559 dfile->data_len);
560 if (*ppos >= dfile->data_len) {
561 free_pages((unsigned long)dfile->buffer, buforder);
562 dfile->buffer = NULL;
563 dfile->data_len = 0;
564 }
565 out_unlock:
566 mutex_unlock(&dev->wl->mutex);
567
568 return err ? err : ret;
569 }
570
571 static ssize_t b43_debugfs_write(struct file *file,
572 const char __user *userbuf,
573 size_t count, loff_t *ppos)
574 {
575 struct b43_wldev *dev;
576 struct b43_debugfs_fops *dfops;
577 char *buf;
578 int err = 0;
579
580 if (!count)
581 return 0;
582 if (count > PAGE_SIZE)
583 return -E2BIG;
584 dev = file->private_data;
585 if (!dev)
586 return -ENODEV;
587
588 mutex_lock(&dev->wl->mutex);
589 if (b43_status(dev) < B43_STAT_INITIALIZED) {
590 err = -ENODEV;
591 goto out_unlock;
592 }
593
594 dfops = container_of(file->f_op, struct b43_debugfs_fops, fops);
595 if (!dfops->write) {
596 err = -ENOSYS;
597 goto out_unlock;
598 }
599
600 buf = (char *)get_zeroed_page(GFP_KERNEL);
601 if (!buf) {
602 err = -ENOMEM;
603 goto out_unlock;
604 }
605 if (copy_from_user(buf, userbuf, count)) {
606 err = -EFAULT;
607 goto out_freepage;
608 }
609 err = dfops->write(dev, buf, count);
610 if (err)
611 goto out_freepage;
612
613 out_freepage:
614 free_page((unsigned long)buf);
615 out_unlock:
616 mutex_unlock(&dev->wl->mutex);
617
618 return err ? err : count;
619 }
620
621
622 #define B43_DEBUGFS_FOPS(name, _read, _write) \
623 static struct b43_debugfs_fops fops_##name = { \
624 .read = _read, \
625 .write = _write, \
626 .fops = { \
627 .open = b43_debugfs_open, \
628 .read = b43_debugfs_read, \
629 .write = b43_debugfs_write, \
630 .llseek = generic_file_llseek, \
631 }, \
632 .file_struct_offset = offsetof(struct b43_dfsentry, \
633 file_##name), \
634 }
635
636 B43_DEBUGFS_FOPS(shm16read, shm16read__read_file, shm16read__write_file);
637 B43_DEBUGFS_FOPS(shm16write, NULL, shm16write__write_file);
638 B43_DEBUGFS_FOPS(shm32read, shm32read__read_file, shm32read__write_file);
639 B43_DEBUGFS_FOPS(shm32write, NULL, shm32write__write_file);
640 B43_DEBUGFS_FOPS(mmio16read, mmio16read__read_file, mmio16read__write_file);
641 B43_DEBUGFS_FOPS(mmio16write, NULL, mmio16write__write_file);
642 B43_DEBUGFS_FOPS(mmio32read, mmio32read__read_file, mmio32read__write_file);
643 B43_DEBUGFS_FOPS(mmio32write, NULL, mmio32write__write_file);
644 B43_DEBUGFS_FOPS(txstat, txstat_read_file, NULL);
645 B43_DEBUGFS_FOPS(restart, NULL, restart_write_file);
646 B43_DEBUGFS_FOPS(loctls, loctls_read_file, NULL);
647
648
649 bool b43_debug(struct b43_wldev *dev, enum b43_dyndbg feature)
650 {
651 bool enabled;
652
653 enabled = (dev->dfsentry && dev->dfsentry->dyn_debug[feature]);
654 if (unlikely(enabled)) {
655 /* Force full debugging messages, if the user enabled
656 * some dynamic debugging feature. */
657 b43_modparam_verbose = B43_VERBOSITY_MAX;
658 }
659
660 return enabled;
661 }
662
663 static void b43_remove_dynamic_debug(struct b43_wldev *dev)
664 {
665 struct b43_dfsentry *e = dev->dfsentry;
666 int i;
667
668 for (i = 0; i < __B43_NR_DYNDBG; i++)
669 debugfs_remove(e->dyn_debug_dentries[i]);
670 }
671
672 static void b43_add_dynamic_debug(struct b43_wldev *dev)
673 {
674 struct b43_dfsentry *e = dev->dfsentry;
675 struct dentry *d;
676
677 #define add_dyn_dbg(name, id, initstate) do { \
678 e->dyn_debug[id] = (initstate); \
679 d = debugfs_create_bool(name, 0600, e->subdir, \
680 &(e->dyn_debug[id])); \
681 if (!IS_ERR(d)) \
682 e->dyn_debug_dentries[id] = d; \
683 } while (0)
684
685 add_dyn_dbg("debug_xmitpower", B43_DBG_XMITPOWER, 0);
686 add_dyn_dbg("debug_dmaoverflow", B43_DBG_DMAOVERFLOW, 0);
687 add_dyn_dbg("debug_dmaverbose", B43_DBG_DMAVERBOSE, 0);
688 add_dyn_dbg("debug_pwork_fast", B43_DBG_PWORK_FAST, 0);
689 add_dyn_dbg("debug_pwork_stop", B43_DBG_PWORK_STOP, 0);
690 add_dyn_dbg("debug_lo", B43_DBG_LO, 0);
691 add_dyn_dbg("debug_firmware", B43_DBG_FIRMWARE, 0);
692 add_dyn_dbg("debug_keys", B43_DBG_KEYS, 0);
693 add_dyn_dbg("debug_verbose_stats", B43_DBG_VERBOSESTATS, 0);
694
695 #undef add_dyn_dbg
696 }
697
698 void b43_debugfs_add_device(struct b43_wldev *dev)
699 {
700 struct b43_dfsentry *e;
701 struct b43_txstatus_log *log;
702 char devdir[16];
703
704 B43_WARN_ON(!dev);
705 e = kzalloc(sizeof(*e), GFP_KERNEL);
706 if (!e) {
707 b43err(dev->wl, "debugfs: add device OOM\n");
708 return;
709 }
710 e->dev = dev;
711 log = &e->txstatlog;
712 log->log = kcalloc(B43_NR_LOGGED_TXSTATUS,
713 sizeof(struct b43_txstatus), GFP_KERNEL);
714 if (!log->log) {
715 b43err(dev->wl, "debugfs: add device txstatus OOM\n");
716 kfree(e);
717 return;
718 }
719 log->end = -1;
720
721 dev->dfsentry = e;
722
723 snprintf(devdir, sizeof(devdir), "%s", wiphy_name(dev->wl->hw->wiphy));
724 e->subdir = debugfs_create_dir(devdir, rootdir);
725 if (!e->subdir || IS_ERR(e->subdir)) {
726 if (e->subdir == ERR_PTR(-ENODEV)) {
727 b43dbg(dev->wl, "DebugFS (CONFIG_DEBUG_FS) not "
728 "enabled in kernel config\n");
729 } else {
730 b43err(dev->wl, "debugfs: cannot create %s directory\n",
731 devdir);
732 }
733 dev->dfsentry = NULL;
734 kfree(log->log);
735 kfree(e);
736 return;
737 }
738
739 e->mmio16read_next = 0xFFFF; /* invalid address */
740 e->mmio32read_next = 0xFFFF; /* invalid address */
741 e->shm16read_routing_next = 0xFFFFFFFF; /* invalid routing */
742 e->shm16read_addr_next = 0xFFFFFFFF; /* invalid address */
743 e->shm32read_routing_next = 0xFFFFFFFF; /* invalid routing */
744 e->shm32read_addr_next = 0xFFFFFFFF; /* invalid address */
745
746 #define ADD_FILE(name, mode) \
747 do { \
748 struct dentry *d; \
749 d = debugfs_create_file(__stringify(name), \
750 mode, e->subdir, dev, \
751 &fops_##name.fops); \
752 e->file_##name.dentry = NULL; \
753 if (!IS_ERR(d)) \
754 e->file_##name.dentry = d; \
755 } while (0)
756
757
758 ADD_FILE(shm16read, 0600);
759 ADD_FILE(shm16write, 0200);
760 ADD_FILE(shm32read, 0600);
761 ADD_FILE(shm32write, 0200);
762 ADD_FILE(mmio16read, 0600);
763 ADD_FILE(mmio16write, 0200);
764 ADD_FILE(mmio32read, 0600);
765 ADD_FILE(mmio32write, 0200);
766 ADD_FILE(txstat, 0400);
767 ADD_FILE(restart, 0200);
768 ADD_FILE(loctls, 0400);
769
770 #undef ADD_FILE
771
772 b43_add_dynamic_debug(dev);
773 }
774
775 void b43_debugfs_remove_device(struct b43_wldev *dev)
776 {
777 struct b43_dfsentry *e;
778
779 if (!dev)
780 return;
781 e = dev->dfsentry;
782 if (!e)
783 return;
784 b43_remove_dynamic_debug(dev);
785
786 debugfs_remove(e->file_shm16read.dentry);
787 debugfs_remove(e->file_shm16write.dentry);
788 debugfs_remove(e->file_shm32read.dentry);
789 debugfs_remove(e->file_shm32write.dentry);
790 debugfs_remove(e->file_mmio16read.dentry);
791 debugfs_remove(e->file_mmio16write.dentry);
792 debugfs_remove(e->file_mmio32read.dentry);
793 debugfs_remove(e->file_mmio32write.dentry);
794 debugfs_remove(e->file_txstat.dentry);
795 debugfs_remove(e->file_restart.dentry);
796 debugfs_remove(e->file_loctls.dentry);
797
798 debugfs_remove(e->subdir);
799 kfree(e->txstatlog.log);
800 kfree(e);
801 }
802
803 void b43_debugfs_log_txstat(struct b43_wldev *dev,
804 const struct b43_txstatus *status)
805 {
806 struct b43_dfsentry *e = dev->dfsentry;
807 struct b43_txstatus_log *log;
808 struct b43_txstatus *cur;
809 int i;
810
811 if (!e)
812 return;
813 log = &e->txstatlog;
814 i = log->end + 1;
815 if (i == B43_NR_LOGGED_TXSTATUS)
816 i = 0;
817 log->end = i;
818 cur = &(log->log[i]);
819 memcpy(cur, status, sizeof(*cur));
820 }
821
822 void b43_debugfs_init(void)
823 {
824 rootdir = debugfs_create_dir(KBUILD_MODNAME, NULL);
825 if (IS_ERR(rootdir))
826 rootdir = NULL;
827 }
828
829 void b43_debugfs_exit(void)
830 {
831 debugfs_remove(rootdir);
832 }