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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" | |
37 | #include "pio.h" | |
38 | #include "xmit.h" | |
39 | ||
40 | ||
41 | /* The root directory. */ | |
42 | struct dentry *rootdir; | |
43 | ||
44 | struct b43_debugfs_fops { | |
45 | ssize_t (*read)(struct b43_wldev *dev, char *buf, size_t bufsize); | |
46 | int (*write)(struct b43_wldev *dev, const char *buf, size_t count); | |
47 | struct file_operations fops; | |
48 | /* Offset of struct b43_dfs_file in struct b43_dfsentry */ | |
49 | size_t file_struct_offset; | |
50 | /* Take wl->irq_lock before calling read/write? */ | |
51 | bool take_irqlock; | |
52 | }; | |
53 | ||
54 | static inline | |
55 | struct b43_dfs_file * fops_to_dfs_file(struct b43_wldev *dev, | |
56 | const struct b43_debugfs_fops *dfops) | |
57 | { | |
58 | void *p; | |
59 | ||
60 | p = dev->dfsentry; | |
61 | p += dfops->file_struct_offset; | |
62 | ||
63 | return p; | |
64 | } | |
65 | ||
66 | ||
67 | #define fappend(fmt, x...) \ | |
68 | do { \ | |
69 | if (bufsize - count) \ | |
70 | count += snprintf(buf + count, \ | |
71 | bufsize - count, \ | |
72 | fmt , ##x); \ | |
73 | else \ | |
74 | printk(KERN_ERR "b43: fappend overflow\n"); \ | |
75 | } while (0) | |
76 | ||
77 | ||
78 | /* wl->irq_lock is locked */ | |
79 | ssize_t tsf_read_file(struct b43_wldev *dev, char *buf, size_t bufsize) | |
80 | { | |
81 | ssize_t count = 0; | |
82 | u64 tsf; | |
83 | ||
84 | b43_tsf_read(dev, &tsf); | |
85 | fappend("0x%08x%08x\n", | |
86 | (unsigned int)((tsf & 0xFFFFFFFF00000000ULL) >> 32), | |
87 | (unsigned int)(tsf & 0xFFFFFFFFULL)); | |
88 | ||
89 | return count; | |
90 | } | |
91 | ||
92 | /* wl->irq_lock is locked */ | |
93 | int tsf_write_file(struct b43_wldev *dev, const char *buf, size_t count) | |
94 | { | |
95 | u64 tsf; | |
96 | ||
97 | if (sscanf(buf, "%llu", (unsigned long long *)(&tsf)) != 1) | |
98 | return -EINVAL; | |
99 | b43_tsf_write(dev, tsf); | |
100 | ||
101 | return 0; | |
102 | } | |
103 | ||
104 | /* wl->irq_lock is locked */ | |
105 | ssize_t ucode_regs_read_file(struct b43_wldev *dev, char *buf, size_t bufsize) | |
106 | { | |
107 | ssize_t count = 0; | |
108 | int i; | |
109 | ||
110 | for (i = 0; i < 64; i++) { | |
111 | fappend("r%d = 0x%04x\n", i, | |
112 | b43_shm_read16(dev, B43_SHM_SCRATCH, i)); | |
113 | } | |
114 | ||
115 | return count; | |
116 | } | |
117 | ||
118 | /* wl->irq_lock is locked */ | |
119 | ssize_t shm_read_file(struct b43_wldev *dev, char *buf, size_t bufsize) | |
120 | { | |
121 | ssize_t count = 0; | |
122 | int i; | |
123 | u16 tmp; | |
124 | __le16 *le16buf = (__le16 *)buf; | |
125 | ||
126 | for (i = 0; i < 0x1000; i++) { | |
127 | if (bufsize <= 0) | |
128 | break; | |
129 | tmp = b43_shm_read16(dev, B43_SHM_SHARED, 2 * i); | |
130 | le16buf[i] = cpu_to_le16(tmp); | |
131 | count += sizeof(tmp); | |
132 | bufsize -= sizeof(tmp); | |
133 | } | |
134 | ||
135 | return count; | |
136 | } | |
137 | ||
138 | ssize_t txstat_read_file(struct b43_wldev *dev, char *buf, size_t bufsize) | |
139 | { | |
140 | struct b43_txstatus_log *log = &dev->dfsentry->txstatlog; | |
141 | ssize_t count = 0; | |
142 | unsigned long flags; | |
143 | int i, idx; | |
144 | struct b43_txstatus *stat; | |
145 | ||
146 | spin_lock_irqsave(&log->lock, flags); | |
147 | if (log->end < 0) { | |
148 | fappend("Nothing transmitted, yet\n"); | |
149 | goto out_unlock; | |
150 | } | |
151 | fappend("b43 TX status reports:\n\n" | |
152 | "index | cookie | seq | phy_stat | frame_count | " | |
153 | "rts_count | supp_reason | pm_indicated | " | |
154 | "intermediate | for_ampdu | acked\n" "---\n"); | |
155 | i = log->end + 1; | |
156 | idx = 0; | |
157 | while (1) { | |
158 | if (i == B43_NR_LOGGED_TXSTATUS) | |
159 | i = 0; | |
160 | stat = &(log->log[i]); | |
161 | if (stat->cookie) { | |
162 | fappend("%03d | " | |
163 | "0x%04X | 0x%04X | 0x%02X | " | |
164 | "0x%X | 0x%X | " | |
165 | "%u | %u | " | |
166 | "%u | %u | %u\n", | |
167 | idx, | |
168 | stat->cookie, stat->seq, stat->phy_stat, | |
169 | stat->frame_count, stat->rts_count, | |
170 | stat->supp_reason, stat->pm_indicated, | |
171 | stat->intermediate, stat->for_ampdu, | |
172 | stat->acked); | |
173 | idx++; | |
174 | } | |
175 | if (i == log->end) | |
176 | break; | |
177 | i++; | |
178 | } | |
179 | out_unlock: | |
180 | spin_unlock_irqrestore(&log->lock, flags); | |
181 | ||
182 | return count; | |
183 | } | |
184 | ||
185 | ssize_t txpower_g_read_file(struct b43_wldev *dev, char *buf, size_t bufsize) | |
186 | { | |
187 | ssize_t count = 0; | |
188 | ||
189 | if (dev->phy.type != B43_PHYTYPE_G) { | |
190 | fappend("Device is not a G-PHY\n"); | |
191 | goto out; | |
192 | } | |
193 | fappend("Control: %s\n", dev->phy.manual_txpower_control ? | |
194 | "MANUAL" : "AUTOMATIC"); | |
195 | fappend("Baseband attenuation: %u\n", dev->phy.bbatt.att); | |
196 | fappend("Radio attenuation: %u\n", dev->phy.rfatt.att); | |
197 | fappend("TX Mixer Gain: %s\n", | |
198 | (dev->phy.tx_control & B43_TXCTL_TXMIX) ? "ON" : "OFF"); | |
199 | fappend("PA Gain 2dB: %s\n", | |
200 | (dev->phy.tx_control & B43_TXCTL_PA2DB) ? "ON" : "OFF"); | |
201 | fappend("PA Gain 3dB: %s\n", | |
202 | (dev->phy.tx_control & B43_TXCTL_PA3DB) ? "ON" : "OFF"); | |
203 | fappend("\n\n"); | |
204 | fappend("You can write to this file:\n"); | |
205 | fappend("Writing \"auto\" enables automatic txpower control.\n"); | |
206 | fappend | |
207 | ("Writing the attenuation values as \"bbatt rfatt txmix pa2db pa3db\" " | |
208 | "enables manual txpower control.\n"); | |
209 | fappend("Example: 5 4 0 0 1\n"); | |
210 | fappend("Enables manual control with Baseband attenuation 5, " | |
211 | "Radio attenuation 4, No TX Mixer Gain, " | |
212 | "No PA Gain 2dB, With PA Gain 3dB.\n"); | |
213 | out: | |
214 | return count; | |
215 | } | |
216 | ||
217 | int txpower_g_write_file(struct b43_wldev *dev, const char *buf, size_t count) | |
218 | { | |
219 | unsigned long flags; | |
220 | unsigned long phy_flags; | |
221 | int err = 0; | |
222 | ||
223 | spin_lock_irqsave(&dev->wl->irq_lock, flags); | |
224 | if (dev->phy.type != B43_PHYTYPE_G) { | |
225 | err = -ENODEV; | |
226 | goto out_unlock; | |
227 | } | |
228 | if ((count >= 4) && (memcmp(buf, "auto", 4) == 0)) { | |
229 | /* Automatic control */ | |
230 | dev->phy.manual_txpower_control = 0; | |
231 | b43_phy_xmitpower(dev); | |
232 | } else { | |
233 | int bbatt = 0, rfatt = 0, txmix = 0, pa2db = 0, pa3db = 0; | |
234 | /* Manual control */ | |
235 | if (sscanf(buf, "%d %d %d %d %d", &bbatt, &rfatt, | |
236 | &txmix, &pa2db, &pa3db) != 5) { | |
237 | err = -EINVAL; | |
238 | goto out_unlock; | |
239 | } | |
240 | b43_put_attenuation_into_ranges(dev, &bbatt, &rfatt); | |
241 | dev->phy.manual_txpower_control = 1; | |
242 | dev->phy.bbatt.att = bbatt; | |
243 | dev->phy.rfatt.att = rfatt; | |
244 | dev->phy.tx_control = 0; | |
245 | if (txmix) | |
246 | dev->phy.tx_control |= B43_TXCTL_TXMIX; | |
247 | if (pa2db) | |
248 | dev->phy.tx_control |= B43_TXCTL_PA2DB; | |
249 | if (pa3db) | |
250 | dev->phy.tx_control |= B43_TXCTL_PA3DB; | |
251 | b43_phy_lock(dev, phy_flags); | |
252 | b43_radio_lock(dev); | |
253 | b43_set_txpower_g(dev, &dev->phy.bbatt, | |
254 | &dev->phy.rfatt, dev->phy.tx_control); | |
255 | b43_radio_unlock(dev); | |
256 | b43_phy_unlock(dev, phy_flags); | |
257 | } | |
258 | out_unlock: | |
259 | spin_unlock_irqrestore(&dev->wl->irq_lock, flags); | |
260 | ||
261 | return err; | |
262 | } | |
263 | ||
264 | /* wl->irq_lock is locked */ | |
265 | int restart_write_file(struct b43_wldev *dev, const char *buf, size_t count) | |
266 | { | |
267 | int err = 0; | |
268 | ||
269 | if (count > 0 && buf[0] == '1') { | |
270 | b43_controller_restart(dev, "manually restarted"); | |
271 | } else | |
272 | err = -EINVAL; | |
273 | ||
274 | return err; | |
275 | } | |
276 | ||
277 | static ssize_t append_lo_table(ssize_t count, char *buf, const size_t bufsize, | |
278 | struct b43_loctl table[B43_NR_BB][B43_NR_RF]) | |
279 | { | |
280 | unsigned int i, j; | |
281 | struct b43_loctl *ctl; | |
282 | ||
283 | for (i = 0; i < B43_NR_BB; i++) { | |
284 | for (j = 0; j < B43_NR_RF; j++) { | |
285 | ctl = &(table[i][j]); | |
286 | fappend("(bbatt %2u, rfatt %2u) -> " | |
287 | "(I %+3d, Q %+3d, Used: %d, Calibrated: %d)\n", | |
288 | i, j, ctl->i, ctl->q, | |
289 | ctl->used, | |
290 | b43_loctl_is_calibrated(ctl)); | |
291 | } | |
292 | } | |
293 | ||
294 | return count; | |
295 | } | |
296 | ||
297 | ssize_t loctls_read_file(struct b43_wldev *dev, char *buf, size_t bufsize) | |
298 | { | |
299 | ssize_t count = 0; | |
300 | struct b43_txpower_lo_control *lo; | |
301 | int i, err = 0; | |
302 | ||
303 | if (dev->phy.type != B43_PHYTYPE_G) { | |
304 | fappend("Device is not a G-PHY\n"); | |
305 | err = -ENODEV; | |
306 | goto out; | |
307 | } | |
308 | lo = dev->phy.lo_control; | |
309 | fappend("-- Local Oscillator calibration data --\n\n"); | |
310 | fappend("Measured: %d, Rebuild: %d, HW-power-control: %d\n", | |
311 | lo->lo_measured, | |
312 | lo->rebuild, | |
313 | dev->phy.hardware_power_control); | |
314 | fappend("TX Bias: 0x%02X, TX Magn: 0x%02X\n", | |
315 | lo->tx_bias, lo->tx_magn); | |
316 | fappend("Power Vector: 0x%08X%08X\n", | |
317 | (unsigned int)((lo->power_vector & 0xFFFFFFFF00000000ULL) >> 32), | |
318 | (unsigned int)(lo->power_vector & 0x00000000FFFFFFFFULL)); | |
319 | fappend("\nControl table WITH PADMIX:\n"); | |
320 | count = append_lo_table(count, buf, bufsize, lo->with_padmix); | |
321 | fappend("\nControl table WITHOUT PADMIX:\n"); | |
322 | count = append_lo_table(count, buf, bufsize, lo->no_padmix); | |
323 | fappend("\nUsed RF attenuation values: Value(WithPadmix flag)\n"); | |
324 | for (i = 0; i < lo->rfatt_list.len; i++) { | |
325 | fappend("%u(%d), ", | |
326 | lo->rfatt_list.list[i].att, | |
327 | lo->rfatt_list.list[i].with_padmix); | |
328 | } | |
329 | fappend("\n"); | |
330 | fappend("\nUsed Baseband attenuation values:\n"); | |
331 | for (i = 0; i < lo->bbatt_list.len; i++) { | |
332 | fappend("%u, ", | |
333 | lo->bbatt_list.list[i].att); | |
334 | } | |
335 | fappend("\n"); | |
336 | ||
337 | out: | |
338 | return err ? err : count; | |
339 | } | |
340 | ||
341 | #undef fappend | |
342 | ||
343 | static int b43_debugfs_open(struct inode *inode, struct file *file) | |
344 | { | |
345 | file->private_data = inode->i_private; | |
346 | return 0; | |
347 | } | |
348 | ||
349 | static ssize_t b43_debugfs_read(struct file *file, char __user *userbuf, | |
350 | size_t count, loff_t *ppos) | |
351 | { | |
352 | struct b43_wldev *dev; | |
353 | struct b43_debugfs_fops *dfops; | |
354 | struct b43_dfs_file *dfile; | |
355 | ssize_t ret; | |
356 | char *buf; | |
357 | const size_t bufsize = 1024 * 128; | |
358 | const size_t buforder = get_order(bufsize); | |
359 | int err = 0; | |
360 | ||
361 | if (!count) | |
362 | return 0; | |
363 | dev = file->private_data; | |
364 | if (!dev) | |
365 | return -ENODEV; | |
366 | ||
367 | mutex_lock(&dev->wl->mutex); | |
368 | if (b43_status(dev) < B43_STAT_INITIALIZED) { | |
369 | err = -ENODEV; | |
370 | goto out_unlock; | |
371 | } | |
372 | ||
373 | dfops = container_of(file->f_op, struct b43_debugfs_fops, fops); | |
374 | if (!dfops->read) { | |
375 | err = -ENOSYS; | |
376 | goto out_unlock; | |
377 | } | |
378 | dfile = fops_to_dfs_file(dev, dfops); | |
379 | ||
380 | if (!dfile->buffer) { | |
381 | buf = (char *)__get_free_pages(GFP_KERNEL, buforder); | |
382 | if (!buf) { | |
383 | err = -ENOMEM; | |
384 | goto out_unlock; | |
385 | } | |
386 | memset(buf, 0, bufsize); | |
387 | if (dfops->take_irqlock) { | |
388 | spin_lock_irq(&dev->wl->irq_lock); | |
389 | ret = dfops->read(dev, buf, bufsize); | |
390 | spin_unlock_irq(&dev->wl->irq_lock); | |
391 | } else | |
392 | ret = dfops->read(dev, buf, bufsize); | |
393 | if (ret <= 0) { | |
394 | free_pages((unsigned long)buf, buforder); | |
395 | err = ret; | |
396 | goto out_unlock; | |
397 | } | |
398 | dfile->data_len = ret; | |
399 | dfile->buffer = buf; | |
400 | } | |
401 | ||
402 | ret = simple_read_from_buffer(userbuf, count, ppos, | |
403 | dfile->buffer, | |
404 | dfile->data_len); | |
405 | if (*ppos >= dfile->data_len) { | |
406 | free_pages((unsigned long)dfile->buffer, buforder); | |
407 | dfile->buffer = NULL; | |
408 | dfile->data_len = 0; | |
409 | } | |
410 | out_unlock: | |
411 | mutex_unlock(&dev->wl->mutex); | |
412 | ||
413 | return err ? err : ret; | |
414 | } | |
415 | ||
416 | static ssize_t b43_debugfs_write(struct file *file, | |
417 | const char __user *userbuf, | |
418 | size_t count, loff_t *ppos) | |
419 | { | |
420 | struct b43_wldev *dev; | |
421 | struct b43_debugfs_fops *dfops; | |
422 | char *buf; | |
423 | int err = 0; | |
424 | ||
425 | if (!count) | |
426 | return 0; | |
427 | if (count > PAGE_SIZE) | |
428 | return -E2BIG; | |
429 | dev = file->private_data; | |
430 | if (!dev) | |
431 | return -ENODEV; | |
432 | ||
433 | mutex_lock(&dev->wl->mutex); | |
434 | if (b43_status(dev) < B43_STAT_INITIALIZED) { | |
435 | err = -ENODEV; | |
436 | goto out_unlock; | |
437 | } | |
438 | ||
439 | dfops = container_of(file->f_op, struct b43_debugfs_fops, fops); | |
440 | if (!dfops->write) { | |
441 | err = -ENOSYS; | |
442 | goto out_unlock; | |
443 | } | |
444 | ||
445 | buf = (char *)get_zeroed_page(GFP_KERNEL); | |
446 | if (!buf) { | |
447 | err = -ENOMEM; | |
448 | goto out_unlock; | |
449 | } | |
450 | if (copy_from_user(buf, userbuf, count)) { | |
451 | err = -EFAULT; | |
452 | goto out_freepage; | |
453 | } | |
454 | if (dfops->take_irqlock) { | |
455 | spin_lock_irq(&dev->wl->irq_lock); | |
456 | err = dfops->write(dev, buf, count); | |
457 | spin_unlock_irq(&dev->wl->irq_lock); | |
458 | } else | |
459 | err = dfops->write(dev, buf, count); | |
460 | if (err) | |
461 | goto out_freepage; | |
462 | ||
463 | out_freepage: | |
464 | free_page((unsigned long)buf); | |
465 | out_unlock: | |
466 | mutex_unlock(&dev->wl->mutex); | |
467 | ||
468 | return err ? err : count; | |
469 | } | |
470 | ||
471 | ||
472 | #define B43_DEBUGFS_FOPS(name, _read, _write, _take_irqlock) \ | |
473 | static struct b43_debugfs_fops fops_##name = { \ | |
474 | .read = _read, \ | |
475 | .write = _write, \ | |
476 | .fops = { \ | |
477 | .open = b43_debugfs_open, \ | |
478 | .read = b43_debugfs_read, \ | |
479 | .write = b43_debugfs_write, \ | |
480 | }, \ | |
481 | .file_struct_offset = offsetof(struct b43_dfsentry, \ | |
482 | file_##name), \ | |
483 | .take_irqlock = _take_irqlock, \ | |
484 | } | |
485 | ||
486 | B43_DEBUGFS_FOPS(tsf, tsf_read_file, tsf_write_file, 1); | |
487 | B43_DEBUGFS_FOPS(ucode_regs, ucode_regs_read_file, NULL, 1); | |
488 | B43_DEBUGFS_FOPS(shm, shm_read_file, NULL, 1); | |
489 | B43_DEBUGFS_FOPS(txstat, txstat_read_file, NULL, 0); | |
490 | B43_DEBUGFS_FOPS(txpower_g, txpower_g_read_file, txpower_g_write_file, 0); | |
491 | B43_DEBUGFS_FOPS(restart, NULL, restart_write_file, 1); | |
492 | B43_DEBUGFS_FOPS(loctls, loctls_read_file, NULL, 0); | |
493 | ||
494 | ||
495 | int b43_debug(struct b43_wldev *dev, enum b43_dyndbg feature) | |
496 | { | |
497 | return !!(dev->dfsentry && dev->dfsentry->dyn_debug[feature]); | |
498 | } | |
499 | ||
500 | static void b43_remove_dynamic_debug(struct b43_wldev *dev) | |
501 | { | |
502 | struct b43_dfsentry *e = dev->dfsentry; | |
503 | int i; | |
504 | ||
505 | for (i = 0; i < __B43_NR_DYNDBG; i++) | |
506 | debugfs_remove(e->dyn_debug_dentries[i]); | |
507 | } | |
508 | ||
509 | static void b43_add_dynamic_debug(struct b43_wldev *dev) | |
510 | { | |
511 | struct b43_dfsentry *e = dev->dfsentry; | |
512 | struct dentry *d; | |
513 | ||
514 | #define add_dyn_dbg(name, id, initstate) do { \ | |
515 | e->dyn_debug[id] = (initstate); \ | |
516 | d = debugfs_create_bool(name, 0600, e->subdir, \ | |
517 | &(e->dyn_debug[id])); \ | |
518 | if (!IS_ERR(d)) \ | |
519 | e->dyn_debug_dentries[id] = d; \ | |
520 | } while (0) | |
521 | ||
522 | add_dyn_dbg("debug_xmitpower", B43_DBG_XMITPOWER, 0); | |
523 | add_dyn_dbg("debug_dmaoverflow", B43_DBG_DMAOVERFLOW, 0); | |
524 | add_dyn_dbg("debug_dmaverbose", B43_DBG_DMAVERBOSE, 0); | |
525 | add_dyn_dbg("debug_pwork_fast", B43_DBG_PWORK_FAST, 0); | |
526 | add_dyn_dbg("debug_pwork_stop", B43_DBG_PWORK_STOP, 0); | |
527 | ||
528 | #undef add_dyn_dbg | |
529 | } | |
530 | ||
531 | void b43_debugfs_add_device(struct b43_wldev *dev) | |
532 | { | |
533 | struct b43_dfsentry *e; | |
534 | struct b43_txstatus_log *log; | |
535 | char devdir[16]; | |
536 | ||
537 | B43_WARN_ON(!dev); | |
538 | e = kzalloc(sizeof(*e), GFP_KERNEL); | |
539 | if (!e) { | |
540 | b43err(dev->wl, "debugfs: add device OOM\n"); | |
541 | return; | |
542 | } | |
543 | e->dev = dev; | |
544 | log = &e->txstatlog; | |
545 | log->log = kcalloc(B43_NR_LOGGED_TXSTATUS, | |
546 | sizeof(struct b43_txstatus), GFP_KERNEL); | |
547 | if (!log->log) { | |
548 | b43err(dev->wl, "debugfs: add device txstatus OOM\n"); | |
549 | kfree(e); | |
550 | return; | |
551 | } | |
552 | log->end = -1; | |
553 | spin_lock_init(&log->lock); | |
554 | ||
555 | dev->dfsentry = e; | |
556 | ||
557 | snprintf(devdir, sizeof(devdir), "%s", wiphy_name(dev->wl->hw->wiphy)); | |
558 | e->subdir = debugfs_create_dir(devdir, rootdir); | |
559 | if (!e->subdir || IS_ERR(e->subdir)) { | |
560 | if (e->subdir == ERR_PTR(-ENODEV)) { | |
561 | b43dbg(dev->wl, "DebugFS (CONFIG_DEBUG_FS) not " | |
562 | "enabled in kernel config\n"); | |
563 | } else { | |
564 | b43err(dev->wl, "debugfs: cannot create %s directory\n", | |
565 | devdir); | |
566 | } | |
567 | dev->dfsentry = NULL; | |
568 | kfree(log->log); | |
569 | kfree(e); | |
570 | return; | |
571 | } | |
572 | ||
573 | #define ADD_FILE(name, mode) \ | |
574 | do { \ | |
575 | struct dentry *d; \ | |
576 | d = debugfs_create_file(__stringify(name), \ | |
577 | mode, e->subdir, dev, \ | |
578 | &fops_##name.fops); \ | |
579 | e->file_##name.dentry = NULL; \ | |
580 | if (!IS_ERR(d)) \ | |
581 | e->file_##name.dentry = d; \ | |
582 | } while (0) | |
583 | ||
584 | ||
585 | ADD_FILE(tsf, 0600); | |
586 | ADD_FILE(ucode_regs, 0400); | |
587 | ADD_FILE(shm, 0400); | |
588 | ADD_FILE(txstat, 0400); | |
589 | ADD_FILE(txpower_g, 0600); | |
590 | ADD_FILE(restart, 0200); | |
591 | ADD_FILE(loctls, 0400); | |
592 | ||
593 | #undef ADD_FILE | |
594 | ||
595 | b43_add_dynamic_debug(dev); | |
596 | } | |
597 | ||
598 | void b43_debugfs_remove_device(struct b43_wldev *dev) | |
599 | { | |
600 | struct b43_dfsentry *e; | |
601 | ||
602 | if (!dev) | |
603 | return; | |
604 | e = dev->dfsentry; | |
605 | if (!e) | |
606 | return; | |
607 | b43_remove_dynamic_debug(dev); | |
608 | ||
609 | debugfs_remove(e->file_tsf.dentry); | |
610 | debugfs_remove(e->file_ucode_regs.dentry); | |
611 | debugfs_remove(e->file_shm.dentry); | |
612 | debugfs_remove(e->file_txstat.dentry); | |
613 | debugfs_remove(e->file_txpower_g.dentry); | |
614 | debugfs_remove(e->file_restart.dentry); | |
615 | debugfs_remove(e->file_loctls.dentry); | |
616 | ||
617 | debugfs_remove(e->subdir); | |
618 | kfree(e->txstatlog.log); | |
619 | kfree(e); | |
620 | } | |
621 | ||
622 | void b43_debugfs_log_txstat(struct b43_wldev *dev, | |
623 | const struct b43_txstatus *status) | |
624 | { | |
625 | struct b43_dfsentry *e = dev->dfsentry; | |
626 | struct b43_txstatus_log *log; | |
627 | struct b43_txstatus *cur; | |
628 | int i; | |
629 | ||
630 | if (!e) | |
631 | return; | |
632 | log = &e->txstatlog; | |
633 | B43_WARN_ON(!irqs_disabled()); | |
634 | spin_lock(&log->lock); | |
635 | i = log->end + 1; | |
636 | if (i == B43_NR_LOGGED_TXSTATUS) | |
637 | i = 0; | |
638 | log->end = i; | |
639 | cur = &(log->log[i]); | |
640 | memcpy(cur, status, sizeof(*cur)); | |
641 | spin_unlock(&log->lock); | |
642 | } | |
643 | ||
644 | void b43_debugfs_init(void) | |
645 | { | |
646 | rootdir = debugfs_create_dir(KBUILD_MODNAME, NULL); | |
647 | if (IS_ERR(rootdir)) | |
648 | rootdir = NULL; | |
649 | } | |
650 | ||
651 | void b43_debugfs_exit(void) | |
652 | { | |
653 | debugfs_remove(rootdir); | |
654 | } |