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iwl3945: re-add iwl_poll_direct_bit return value check
[mirror_ubuntu-bionic-kernel.git] / drivers / net / wireless / b43 / debugfs.c
CommitLineData
e4d6b795
MB		 1/*
2
3 Broadcom B43 wireless driver
4
5 debugfs driver debugging code
6
7 Copyright (c) 2005-2007 Michael Buesch <mb@bu3sch.de>
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"
e4d6b795
MB		 37#include "xmit.h"
38
39
40/* The root directory. */
1a09404a 41static struct dentry *rootdir;
e4d6b795
MB		 42
43struct 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 /* Take wl->irq_lock before calling read/write? */
50 bool take_irqlock;
51};
52
53static inline
54struct b43_dfs_file * fops_to_dfs_file(struct b43_wldev *dev,
55 const struct b43_debugfs_fops *dfops)
56{
57 void *p;
58
59 p = dev->dfsentry;
60 p += dfops->file_struct_offset;
61
62 return p;
63}
64
65
66#define fappend(fmt, x...) \
67 do { \
68 if (bufsize - count) \
69 count += snprintf(buf + count, \
70 bufsize - count, \
71 fmt , ##x); \
72 else \
73 printk(KERN_ERR "b43: fappend overflow\n"); \
74 } while (0)
75
76
6bbc321a
MB		 77/* The biggest address values for SHM access from the debugfs files. */
78#define B43_MAX_SHM_ROUTING 4
79#define B43_MAX_SHM_ADDR 0xFFFF
80
81static ssize_t shm16read__read_file(struct b43_wldev *dev,
82 char *buf, size_t bufsize)
83{
84 ssize_t count = 0;
85 unsigned int routing, addr;
86 u16 val;
87
88 routing = dev->dfsentry->shm16read_routing_next;
89 addr = dev->dfsentry->shm16read_addr_next;
90 if ((routing > B43_MAX_SHM_ROUTING) ||
91 (addr > B43_MAX_SHM_ADDR))
92 return -EDESTADDRREQ;
93
94 val = b43_shm_read16(dev, routing, addr);
95 fappend("0x%04X\n", val);
96
97 return count;
98}
99
100static int shm16read__write_file(struct b43_wldev *dev,
101 const char *buf, size_t count)
102{
103 unsigned int routing, addr;
104 int res;
105
106 res = sscanf(buf, "0x%X 0x%X", &routing, &addr);
107 if (res != 2)
108 return -EINVAL;
109 if (routing > B43_MAX_SHM_ROUTING)
110 return -EADDRNOTAVAIL;
111 if (addr > B43_MAX_SHM_ADDR)
112 return -EADDRNOTAVAIL;
113 if (routing == B43_SHM_SHARED) {
114 if ((addr % 2) != 0)
115 return -EADDRNOTAVAIL;
116 }
117
118 dev->dfsentry->shm16read_routing_next = routing;
119 dev->dfsentry->shm16read_addr_next = addr;
120
121 return 0;
122}
123
124static int shm16write__write_file(struct b43_wldev *dev,
125 const char *buf, size_t count)
126{
127 unsigned int routing, addr, mask, set;
128 u16 val;
129 int res;
130 unsigned long flags;
131
132 res = sscanf(buf, "0x%X 0x%X 0x%X 0x%X",
133 &routing, &addr, &mask, &set);
134 if (res != 4)
135 return -EINVAL;
136 if (routing > B43_MAX_SHM_ROUTING)
137 return -EADDRNOTAVAIL;
138 if (addr > B43_MAX_SHM_ADDR)
139 return -EADDRNOTAVAIL;
140 if (routing == B43_SHM_SHARED) {
141 if ((addr % 2) != 0)
142 return -EADDRNOTAVAIL;
143 }
144 if ((mask > 0xFFFF) || (set > 0xFFFF))
145 return -E2BIG;
146
147 spin_lock_irqsave(&dev->wl->shm_lock, flags);
148 if (mask == 0)
149 val = 0;
150 else
151 val = __b43_shm_read16(dev, routing, addr);
152 val &= mask;
153 val |= set;
154 __b43_shm_write16(dev, routing, addr, val);
155 spin_unlock_irqrestore(&dev->wl->shm_lock, flags);
156
157 return 0;
158}
159
160static ssize_t shm32read__read_file(struct b43_wldev *dev,
161 char *buf, size_t bufsize)
162{
163 ssize_t count = 0;
164 unsigned int routing, addr;
165 u32 val;
166
167 routing = dev->dfsentry->shm32read_routing_next;
168 addr = dev->dfsentry->shm32read_addr_next;
169 if ((routing > B43_MAX_SHM_ROUTING) ||
170 (addr > B43_MAX_SHM_ADDR))
171 return -EDESTADDRREQ;
172
173 val = b43_shm_read32(dev, routing, addr);
174 fappend("0x%08X\n", val);
175
176 return count;
177}
178
179static int shm32read__write_file(struct b43_wldev *dev,
180 const char *buf, size_t count)
181{
182 unsigned int routing, addr;
183 int res;
184
185 res = sscanf(buf, "0x%X 0x%X", &routing, &addr);
186 if (res != 2)
187 return -EINVAL;
188 if (routing > B43_MAX_SHM_ROUTING)
189 return -EADDRNOTAVAIL;
190 if (addr > B43_MAX_SHM_ADDR)
191 return -EADDRNOTAVAIL;
192 if (routing == B43_SHM_SHARED) {
193 if ((addr % 2) != 0)
194 return -EADDRNOTAVAIL;
195 }
196
197 dev->dfsentry->shm32read_routing_next = routing;
198 dev->dfsentry->shm32read_addr_next = addr;
199
200 return 0;
201}
202
203static int shm32write__write_file(struct b43_wldev *dev,
204 const char *buf, size_t count)
205{
206 unsigned int routing, addr, mask, set;
207 u32 val;
208 int res;
209 unsigned long flags;
210
211 res = sscanf(buf, "0x%X 0x%X 0x%X 0x%X",
212 &routing, &addr, &mask, &set);
213 if (res != 4)
214 return -EINVAL;
215 if (routing > B43_MAX_SHM_ROUTING)
216 return -EADDRNOTAVAIL;
217 if (addr > B43_MAX_SHM_ADDR)
218 return -EADDRNOTAVAIL;
219 if (routing == B43_SHM_SHARED) {
220 if ((addr % 2) != 0)
221 return -EADDRNOTAVAIL;
222 }
223 if ((mask > 0xFFFFFFFF) || (set > 0xFFFFFFFF))
224 return -E2BIG;
225
226 spin_lock_irqsave(&dev->wl->shm_lock, flags);
227 if (mask == 0)
228 val = 0;
229 else
230 val = __b43_shm_read32(dev, routing, addr);
231 val &= mask;
232 val |= set;
233 __b43_shm_write32(dev, routing, addr, val);
234 spin_unlock_irqrestore(&dev->wl->shm_lock, flags);
235
236 return 0;
237}
238
8bd463f4
MB		 239/* The biggest MMIO address that we allow access to from the debugfs files. */
240#define B43_MAX_MMIO_ACCESS (0xF00 - 1)
241
242static ssize_t mmio16read__read_file(struct b43_wldev *dev,
243 char *buf, size_t bufsize)
244{
245 ssize_t count = 0;
246 unsigned int addr;
247 u16 val;
248
249 addr = dev->dfsentry->mmio16read_next;
250 if (addr > B43_MAX_MMIO_ACCESS)
251 return -EDESTADDRREQ;
252
253 val = b43_read16(dev, addr);
254 fappend("0x%04X\n", val);
255
256 return count;
257}
258
259static int mmio16read__write_file(struct b43_wldev *dev,
260 const char *buf, size_t count)
261{
262 unsigned int addr;
263 int res;
264
265 res = sscanf(buf, "0x%X", &addr);
266 if (res != 1)
267 return -EINVAL;
268 if (addr > B43_MAX_MMIO_ACCESS)
269 return -EADDRNOTAVAIL;
efa27582
MB		 270 if ((addr % 2) != 0)
271 return -EINVAL;
8bd463f4
MB		 272
273 dev->dfsentry->mmio16read_next = addr;
274
275 return 0;
276}
277
278static int mmio16write__write_file(struct b43_wldev *dev,
279 const char *buf, size_t count)
280{
efa27582 281 unsigned int addr, mask, set;
8bd463f4 282 int res;
efa27582 283 u16 val;
8bd463f4 284
efa27582
MB		 285 res = sscanf(buf, "0x%X 0x%X 0x%X", &addr, &mask, &set);
286 if (res != 3)
8bd463f4
MB		 287 return -EINVAL;
288 if (addr > B43_MAX_MMIO_ACCESS)
289 return -EADDRNOTAVAIL;
efa27582 290 if ((mask > 0xFFFF) || (set > 0xFFFF))
8bd463f4 291 return -E2BIG;
efa27582
MB		 292 if ((addr % 2) != 0)
293 return -EINVAL;
8bd463f4 294
efa27582
MB		 295 if (mask == 0)
296 val = 0;
297 else
298 val = b43_read16(dev, addr);
299 val &= mask;
300 val |= set;
8bd463f4
MB		 301 b43_write16(dev, addr, val);
302
303 return 0;
304}
305
306static ssize_t mmio32read__read_file(struct b43_wldev *dev,
307 char *buf, size_t bufsize)
308{
309 ssize_t count = 0;
310 unsigned int addr;
311 u32 val;
312
313 addr = dev->dfsentry->mmio32read_next;
314 if (addr > B43_MAX_MMIO_ACCESS)
315 return -EDESTADDRREQ;
316
317 val = b43_read32(dev, addr);
318 fappend("0x%08X\n", val);
319
320 return count;
321}
322
323static int mmio32read__write_file(struct b43_wldev *dev,
324 const char *buf, size_t count)
325{
326 unsigned int addr;
327 int res;
328
329 res = sscanf(buf, "0x%X", &addr);
330 if (res != 1)
331 return -EINVAL;
332 if (addr > B43_MAX_MMIO_ACCESS)
333 return -EADDRNOTAVAIL;
efa27582
MB		 334 if ((addr % 4) != 0)
335 return -EINVAL;
8bd463f4
MB		 336
337 dev->dfsentry->mmio32read_next = addr;
338
339 return 0;
340}
341
342static int mmio32write__write_file(struct b43_wldev *dev,
343 const char *buf, size_t count)
344{
efa27582 345 unsigned int addr, mask, set;
8bd463f4 346 int res;
efa27582 347 u32 val;
8bd463f4 348
efa27582
MB		 349 res = sscanf(buf, "0x%X 0x%X 0x%X", &addr, &mask, &set);
350 if (res != 3)
8bd463f4
MB		 351 return -EINVAL;
352 if (addr > B43_MAX_MMIO_ACCESS)
353 return -EADDRNOTAVAIL;
efa27582 354 if ((mask > 0xFFFFFFFF) || (set > 0xFFFFFFFF))
8bd463f4 355 return -E2BIG;
efa27582
MB		 356 if ((addr % 4) != 0)
357 return -EINVAL;
8bd463f4 358
efa27582
MB		 359 if (mask == 0)
360 val = 0;
361 else
362 val = b43_read32(dev, addr);
363 val &= mask;
364 val |= set;
8bd463f4
MB		 365 b43_write32(dev, addr, val);
366
367 return 0;
368}
369
1a09404a
MB		 370static ssize_t txstat_read_file(struct b43_wldev *dev,
371 char *buf, size_t bufsize)
e4d6b795
MB		 372{
373 struct b43_txstatus_log *log = &dev->dfsentry->txstatlog;
374 ssize_t count = 0;
375 unsigned long flags;
376 int i, idx;
377 struct b43_txstatus *stat;
378
379 spin_lock_irqsave(&log->lock, flags);
380 if (log->end < 0) {
381 fappend("Nothing transmitted, yet\n");
382 goto out_unlock;
383 }
384 fappend("b43 TX status reports:\n\n"
385 "index | cookie | seq | phy_stat | frame_count | "
386 "rts_count | supp_reason | pm_indicated | "
387 "intermediate | for_ampdu | acked\n" "---\n");
388 i = log->end + 1;
389 idx = 0;
390 while (1) {
391 if (i == B43_NR_LOGGED_TXSTATUS)
392 i = 0;
393 stat = &(log->log[i]);
394 if (stat->cookie) {
395 fappend("%03d | "
396 "0x%04X | 0x%04X | 0x%02X | "
397 "0x%X | 0x%X | "
398 "%u | %u | "
399 "%u | %u | %u\n",
400 idx,
401 stat->cookie, stat->seq, stat->phy_stat,
402 stat->frame_count, stat->rts_count,
403 stat->supp_reason, stat->pm_indicated,
404 stat->intermediate, stat->for_ampdu,
405 stat->acked);
406 idx++;
407 }
408 if (i == log->end)
409 break;
410 i++;
411 }
412out_unlock:
413 spin_unlock_irqrestore(&log->lock, flags);
414
415 return count;
416}
417
e4d6b795 418/* wl->irq_lock is locked */
1a09404a
MB		 419static int restart_write_file(struct b43_wldev *dev,
420 const char *buf, size_t count)
e4d6b795
MB		 421{
422 int err = 0;
423
424 if (count > 0 && buf[0] == '1') {
425 b43_controller_restart(dev, "manually restarted");
426 } else
427 err = -EINVAL;
428
429 return err;
430}
431
f5eda47f
MB		 432static unsigned long calc_expire_secs(unsigned long now,
433 unsigned long time,
434 unsigned long expire)
e4d6b795 435{
f5eda47f
MB		 436 expire = time + expire;
437
438 if (time_after(now, expire))
439 return 0; /* expired */
440 if (expire < now) {
441 /* jiffies wrapped */
442 expire -= MAX_JIFFY_OFFSET;
443 now -= MAX_JIFFY_OFFSET;
e4d6b795 444 }
f5eda47f 445 B43_WARN_ON(expire < now);
e4d6b795 446
f5eda47f 447 return (expire - now) / HZ;
e4d6b795
MB		 448}
449
1a09404a
MB		 450static ssize_t loctls_read_file(struct b43_wldev *dev,
451 char *buf, size_t bufsize)
e4d6b795
MB		 452{
453 ssize_t count = 0;
454 struct b43_txpower_lo_control *lo;
455 int i, err = 0;
f5eda47f
MB		 456 struct b43_lo_calib *cal;
457 unsigned long now = jiffies;
458 struct b43_phy *phy = &dev->phy;
e4d6b795 459
f5eda47f 460 if (phy->type != B43_PHYTYPE_G) {
e4d6b795
MB		 461 fappend("Device is not a G-PHY\n");
462 err = -ENODEV;
463 goto out;
464 }
ef1a628d 465 lo = phy->g->lo_control;
e4d6b795 466 fappend("-- Local Oscillator calibration data --\n\n");
f5eda47f 467 fappend("HW-power-control enabled: %d\n",
e4d6b795 468 dev->phy.hardware_power_control);
f5eda47f
MB		 469 fappend("TX Bias: 0x%02X, TX Magn: 0x%02X (expire in %lu sec)\n",
470 lo->tx_bias, lo->tx_magn,
471 calc_expire_secs(now, lo->txctl_measured_time,
472 B43_LO_TXCTL_EXPIRE));
473 fappend("Power Vector: 0x%08X%08X (expires in %lu sec)\n",
e4d6b795 474 (unsigned int)((lo->power_vector & 0xFFFFFFFF00000000ULL) >> 32),
f5eda47f
MB		 475 (unsigned int)(lo->power_vector & 0x00000000FFFFFFFFULL),
476 calc_expire_secs(now, lo->pwr_vec_read_time,
477 B43_LO_PWRVEC_EXPIRE));
478
479 fappend("\nCalibrated settings:\n");
480 list_for_each_entry(cal, &lo->calib_list, list) {
481 bool active;
482
ef1a628d
MB		 483 active = (b43_compare_bbatt(&cal->bbatt, &phy->g->bbatt) &&
484 b43_compare_rfatt(&cal->rfatt, &phy->g->rfatt));
f5eda47f
MB		 485 fappend("BB(%d), RF(%d,%d) -> I=%d, Q=%d "
486 "(expires in %lu sec)%s\n",
487 cal->bbatt.att,
488 cal->rfatt.att, cal->rfatt.with_padmix,
489 cal->ctl.i, cal->ctl.q,
490 calc_expire_secs(now, cal->calib_time,
491 B43_LO_CALIB_EXPIRE),
492 active ? " ACTIVE" : "");
493 }
494
e4d6b795
MB		 495 fappend("\nUsed RF attenuation values: Value(WithPadmix flag)\n");
496 for (i = 0; i < lo->rfatt_list.len; i++) {
497 fappend("%u(%d), ",
498 lo->rfatt_list.list[i].att,
499 lo->rfatt_list.list[i].with_padmix);
500 }
501 fappend("\n");
502 fappend("\nUsed Baseband attenuation values:\n");
503 for (i = 0; i < lo->bbatt_list.len; i++) {
504 fappend("%u, ",
505 lo->bbatt_list.list[i].att);
506 }
507 fappend("\n");
508
509out:
510 return err ? err : count;
511}
512
513#undef fappend
514
515static int b43_debugfs_open(struct inode *inode, struct file *file)
516{
517 file->private_data = inode->i_private;
518 return 0;
519}
520
521static ssize_t b43_debugfs_read(struct file *file, char __user *userbuf,
522 size_t count, loff_t *ppos)
523{
524 struct b43_wldev *dev;
525 struct b43_debugfs_fops *dfops;
526 struct b43_dfs_file *dfile;
7223e8d9 527 ssize_t uninitialized_var(ret);
e4d6b795 528 char *buf;
f5eda47f 529 const size_t bufsize = 1024 * 16; /* 16 kiB buffer */
e4d6b795
MB		 530 const size_t buforder = get_order(bufsize);
531 int err = 0;
532
533 if (!count)
534 return 0;
535 dev = file->private_data;
536 if (!dev)
537 return -ENODEV;
538
539 mutex_lock(&dev->wl->mutex);
540 if (b43_status(dev) < B43_STAT_INITIALIZED) {
541 err = -ENODEV;
542 goto out_unlock;
543 }
544
545 dfops = container_of(file->f_op, struct b43_debugfs_fops, fops);
546 if (!dfops->read) {
547 err = -ENOSYS;
548 goto out_unlock;
549 }
550 dfile = fops_to_dfs_file(dev, dfops);
551
552 if (!dfile->buffer) {
553 buf = (char *)__get_free_pages(GFP_KERNEL, buforder);
554 if (!buf) {
555 err = -ENOMEM;
556 goto out_unlock;
557 }
558 memset(buf, 0, bufsize);
559 if (dfops->take_irqlock) {
560 spin_lock_irq(&dev->wl->irq_lock);
561 ret = dfops->read(dev, buf, bufsize);
562 spin_unlock_irq(&dev->wl->irq_lock);
563 } else
564 ret = dfops->read(dev, buf, bufsize);
565 if (ret <= 0) {
566 free_pages((unsigned long)buf, buforder);
567 err = ret;
568 goto out_unlock;
569 }
570 dfile->data_len = ret;
571 dfile->buffer = buf;
572 }
573
574 ret = simple_read_from_buffer(userbuf, count, ppos,
575 dfile->buffer,
576 dfile->data_len);
577 if (*ppos >= dfile->data_len) {
578 free_pages((unsigned long)dfile->buffer, buforder);
579 dfile->buffer = NULL;
580 dfile->data_len = 0;
581 }
582out_unlock:
583 mutex_unlock(&dev->wl->mutex);
584
585 return err ? err : ret;
586}
587
588static ssize_t b43_debugfs_write(struct file *file,
589 const char __user *userbuf,
590 size_t count, loff_t *ppos)
591{
592 struct b43_wldev *dev;
593 struct b43_debugfs_fops *dfops;
594 char *buf;
595 int err = 0;
596
597 if (!count)
598 return 0;
599 if (count > PAGE_SIZE)
600 return -E2BIG;
601 dev = file->private_data;
602 if (!dev)
603 return -ENODEV;
604
605 mutex_lock(&dev->wl->mutex);
606 if (b43_status(dev) < B43_STAT_INITIALIZED) {
607 err = -ENODEV;
608 goto out_unlock;
609 }
610
611 dfops = container_of(file->f_op, struct b43_debugfs_fops, fops);
612 if (!dfops->write) {
613 err = -ENOSYS;
614 goto out_unlock;
615 }
616
617 buf = (char *)get_zeroed_page(GFP_KERNEL);
618 if (!buf) {
619 err = -ENOMEM;
620 goto out_unlock;
621 }
622 if (copy_from_user(buf, userbuf, count)) {
623 err = -EFAULT;
624 goto out_freepage;
625 }
626 if (dfops->take_irqlock) {
627 spin_lock_irq(&dev->wl->irq_lock);
628 err = dfops->write(dev, buf, count);
629 spin_unlock_irq(&dev->wl->irq_lock);
630 } else
631 err = dfops->write(dev, buf, count);
632 if (err)
633 goto out_freepage;
634
635out_freepage:
636 free_page((unsigned long)buf);
637out_unlock:
638 mutex_unlock(&dev->wl->mutex);
639
640 return err ? err : count;
641}
642
643
644#define B43_DEBUGFS_FOPS(name, _read, _write, _take_irqlock) \
645 static struct b43_debugfs_fops fops_##name = { \
646 .read = _read, \
647 .write = _write, \
648 .fops = { \
649 .open = b43_debugfs_open, \
650 .read = b43_debugfs_read, \
651 .write = b43_debugfs_write, \
652 }, \
653 .file_struct_offset = offsetof(struct b43_dfsentry, \
654 file_##name), \
655 .take_irqlock = _take_irqlock, \
656 }
657
6bbc321a
MB		 658B43_DEBUGFS_FOPS(shm16read, shm16read__read_file, shm16read__write_file, 1);
659B43_DEBUGFS_FOPS(shm16write, NULL, shm16write__write_file, 1);
660B43_DEBUGFS_FOPS(shm32read, shm32read__read_file, shm32read__write_file, 1);
661B43_DEBUGFS_FOPS(shm32write, NULL, shm32write__write_file, 1);
8bd463f4
MB		 662B43_DEBUGFS_FOPS(mmio16read, mmio16read__read_file, mmio16read__write_file, 1);
663B43_DEBUGFS_FOPS(mmio16write, NULL, mmio16write__write_file, 1);
664B43_DEBUGFS_FOPS(mmio32read, mmio32read__read_file, mmio32read__write_file, 1);
665B43_DEBUGFS_FOPS(mmio32write, NULL, mmio32write__write_file, 1);
e4d6b795 666B43_DEBUGFS_FOPS(txstat, txstat_read_file, NULL, 0);
e4d6b795
MB		 667B43_DEBUGFS_FOPS(restart, NULL, restart_write_file, 1);
668B43_DEBUGFS_FOPS(loctls, loctls_read_file, NULL, 0);
669
670
060210f9 671bool b43_debug(struct b43_wldev *dev, enum b43_dyndbg feature)
e4d6b795 672{
060210f9
MB		 673 bool enabled;
674
675 enabled = (dev->dfsentry && dev->dfsentry->dyn_debug[feature]);
676 if (unlikely(enabled)) {
677 /* Force full debugging messages, if the user enabled
678 * some dynamic debugging feature. */
679 b43_modparam_verbose = B43_VERBOSITY_MAX;
680 }
681
682 return enabled;
e4d6b795
MB		 683}
684
685static void b43_remove_dynamic_debug(struct b43_wldev *dev)
686{
687 struct b43_dfsentry *e = dev->dfsentry;
688 int i;
689
690 for (i = 0; i < __B43_NR_DYNDBG; i++)
691 debugfs_remove(e->dyn_debug_dentries[i]);
692}
693
694static void b43_add_dynamic_debug(struct b43_wldev *dev)
695{
696 struct b43_dfsentry *e = dev->dfsentry;
697 struct dentry *d;
698
699#define add_dyn_dbg(name, id, initstate) do { \
700 e->dyn_debug[id] = (initstate); \
701 d = debugfs_create_bool(name, 0600, e->subdir, \
702 &(e->dyn_debug[id])); \
703 if (!IS_ERR(d)) \
704 e->dyn_debug_dentries[id] = d; \
705 } while (0)
706
707 add_dyn_dbg("debug_xmitpower", B43_DBG_XMITPOWER, 0);
708 add_dyn_dbg("debug_dmaoverflow", B43_DBG_DMAOVERFLOW, 0);
709 add_dyn_dbg("debug_dmaverbose", B43_DBG_DMAVERBOSE, 0);
710 add_dyn_dbg("debug_pwork_fast", B43_DBG_PWORK_FAST, 0);
711 add_dyn_dbg("debug_pwork_stop", B43_DBG_PWORK_STOP, 0);
f5eda47f 712 add_dyn_dbg("debug_lo", B43_DBG_LO, 0);
923fd703 713 add_dyn_dbg("debug_firmware", B43_DBG_FIRMWARE, 0);
9cf7f247 714 add_dyn_dbg("debug_keys", B43_DBG_KEYS, 0);
e4d6b795
MB		 715
716#undef add_dyn_dbg
717}
718
719void b43_debugfs_add_device(struct b43_wldev *dev)
720{
721 struct b43_dfsentry *e;
722 struct b43_txstatus_log *log;
723 char devdir[16];
724
725 B43_WARN_ON(!dev);
726 e = kzalloc(sizeof(*e), GFP_KERNEL);
727 if (!e) {
728 b43err(dev->wl, "debugfs: add device OOM\n");
729 return;
730 }
731 e->dev = dev;
732 log = &e->txstatlog;
733 log->log = kcalloc(B43_NR_LOGGED_TXSTATUS,
734 sizeof(struct b43_txstatus), GFP_KERNEL);
735 if (!log->log) {
736 b43err(dev->wl, "debugfs: add device txstatus OOM\n");
737 kfree(e);
738 return;
739 }
740 log->end = -1;
741 spin_lock_init(&log->lock);
742
743 dev->dfsentry = e;
744
745 snprintf(devdir, sizeof(devdir), "%s", wiphy_name(dev->wl->hw->wiphy));
746 e->subdir = debugfs_create_dir(devdir, rootdir);
747 if (!e->subdir || IS_ERR(e->subdir)) {
748 if (e->subdir == ERR_PTR(-ENODEV)) {
749 b43dbg(dev->wl, "DebugFS (CONFIG_DEBUG_FS) not "
750 "enabled in kernel config\n");
751 } else {
752 b43err(dev->wl, "debugfs: cannot create %s directory\n",
753 devdir);
754 }
755 dev->dfsentry = NULL;
756 kfree(log->log);
757 kfree(e);
758 return;
759 }
760
8bd463f4
MB		 761 e->mmio16read_next = 0xFFFF; /* invalid address */
762 e->mmio32read_next = 0xFFFF; /* invalid address */
6bbc321a
MB		 763 e->shm16read_routing_next = 0xFFFFFFFF; /* invalid routing */
764 e->shm16read_addr_next = 0xFFFFFFFF; /* invalid address */
765 e->shm32read_routing_next = 0xFFFFFFFF; /* invalid routing */
766 e->shm32read_addr_next = 0xFFFFFFFF; /* invalid address */
8bd463f4 767
e4d6b795
MB		 768#define ADD_FILE(name, mode) \
769 do { \
770 struct dentry *d; \
771 d = debugfs_create_file(__stringify(name), \
772 mode, e->subdir, dev, \
773 &fops_##name.fops); \
774 e->file_##name.dentry = NULL; \
775 if (!IS_ERR(d)) \
776 e->file_##name.dentry = d; \
777 } while (0)
778
779
6bbc321a
MB		 780 ADD_FILE(shm16read, 0600);
781 ADD_FILE(shm16write, 0200);
782 ADD_FILE(shm32read, 0600);
783 ADD_FILE(shm32write, 0200);
8bd463f4
MB		 784 ADD_FILE(mmio16read, 0600);
785 ADD_FILE(mmio16write, 0200);
786 ADD_FILE(mmio32read, 0600);
787 ADD_FILE(mmio32write, 0200);
e4d6b795 788 ADD_FILE(txstat, 0400);
e4d6b795
MB		 789 ADD_FILE(restart, 0200);
790 ADD_FILE(loctls, 0400);
791
792#undef ADD_FILE
793
794 b43_add_dynamic_debug(dev);
795}
796
797void b43_debugfs_remove_device(struct b43_wldev *dev)
798{
799 struct b43_dfsentry *e;
800
801 if (!dev)
802 return;
803 e = dev->dfsentry;
804 if (!e)
805 return;
806 b43_remove_dynamic_debug(dev);
807
6bbc321a
MB		 808 debugfs_remove(e->file_shm16read.dentry);
809 debugfs_remove(e->file_shm16write.dentry);
810 debugfs_remove(e->file_shm32read.dentry);
811 debugfs_remove(e->file_shm32write.dentry);
8bd463f4
MB		 812 debugfs_remove(e->file_mmio16read.dentry);
813 debugfs_remove(e->file_mmio16write.dentry);
814 debugfs_remove(e->file_mmio32read.dentry);
815 debugfs_remove(e->file_mmio32write.dentry);
e4d6b795 816 debugfs_remove(e->file_txstat.dentry);
e4d6b795
MB		 817 debugfs_remove(e->file_restart.dentry);
818 debugfs_remove(e->file_loctls.dentry);
819
820 debugfs_remove(e->subdir);
821 kfree(e->txstatlog.log);
822 kfree(e);
823}
824
7a193a5d 825/* Called with IRQs disabled. */
e4d6b795
MB		 826void b43_debugfs_log_txstat(struct b43_wldev *dev,
827 const struct b43_txstatus *status)
828{
829 struct b43_dfsentry *e = dev->dfsentry;
830 struct b43_txstatus_log *log;
831 struct b43_txstatus *cur;
832 int i;
833
834 if (!e)
835 return;
836 log = &e->txstatlog;
7a193a5d 837 spin_lock(&log->lock); /* IRQs are already disabled. */
e4d6b795
MB		 838 i = log->end + 1;
839 if (i == B43_NR_LOGGED_TXSTATUS)
840 i = 0;
841 log->end = i;
842 cur = &(log->log[i]);
843 memcpy(cur, status, sizeof(*cur));
844 spin_unlock(&log->lock);
845}
846
847void b43_debugfs_init(void)
848{
849 rootdir = debugfs_create_dir(KBUILD_MODNAME, NULL);
850 if (IS_ERR(rootdir))
851 rootdir = NULL;
852}
853
854void b43_debugfs_exit(void)
855{
856 debugfs_remove(rootdir);
857}
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