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net: ptp: do not reimplement PTP/BPF classifier
[linux/fpc-iii.git] / drivers / net / wireless / ath / carl9170 / debug.c
blob1c0af9cd9a85e3fa88b1f5f79c4e1042a0e0c920
1 /*
2 * Atheros CARL9170 driver
3 *
4 * debug(fs) probing
5 *
6 * Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
7 * Copyright 2009, 2010, Christian Lamparter <chunkeey@googlemail.com>
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, see
21 * http://www.gnu.org/licenses/.
22 *
23 * This file incorporates work covered by the following copyright and
24 * permission notice:
25 * Copyright (c) 2008-2009 Atheros Communications, Inc.
26 *
27 * Permission to use, copy, modify, and/or distribute this software for any
28 * purpose with or without fee is hereby granted, provided that the above
29 * copyright notice and this permission notice appear in all copies.
30 *
31 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
32 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
33 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
34 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
35 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
36 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
37 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
38 */
39
40 #include <linux/slab.h>
41 #include <linux/module.h>
42 #include <linux/seq_file.h>
43 #include <linux/vmalloc.h>
44 #include "carl9170.h"
45 #include "cmd.h"
46
47 #define ADD(buf, off, max, fmt, args...) \
48 off += snprintf(&buf[off], max - off, fmt, ##args);
49
50
51 struct carl9170_debugfs_fops {
52 unsigned int read_bufsize;
53 umode_t attr;
54 char *(*read)(struct ar9170 *ar, char *buf, size_t bufsize,
55 ssize_t *len);
56 ssize_t (*write)(struct ar9170 *aru, const char *buf, size_t size);
57 const struct file_operations fops;
58
59 enum carl9170_device_state req_dev_state;
60 };
61
62 static ssize_t carl9170_debugfs_read(struct file *file, char __user *userbuf,
63 size_t count, loff_t *ppos)
64 {
65 struct carl9170_debugfs_fops *dfops;
66 struct ar9170 *ar;
67 char *buf = NULL, *res_buf = NULL;
68 ssize_t ret = 0;
69 int err = 0;
70
71 if (!count)
72 return 0;
73
74 ar = file->private_data;
75
76 if (!ar)
77 return -ENODEV;
78 dfops = container_of(file->f_op, struct carl9170_debugfs_fops, fops);
79
80 if (!dfops->read)
81 return -ENOSYS;
82
83 if (dfops->read_bufsize) {
84 buf = vmalloc(dfops->read_bufsize);
85 if (!buf)
86 return -ENOMEM;
87 }
88
89 mutex_lock(&ar->mutex);
90 if (!CHK_DEV_STATE(ar, dfops->req_dev_state)) {
91 err = -ENODEV;
92 res_buf = buf;
93 goto out_free;
94 }
95
96 res_buf = dfops->read(ar, buf, dfops->read_bufsize, &ret);
97
98 if (ret > 0)
99 err = simple_read_from_buffer(userbuf, count, ppos,
100 res_buf, ret);
101 else
102 err = ret;
103
104 WARN_ON_ONCE(dfops->read_bufsize && (res_buf != buf));
105
106 out_free:
107 vfree(res_buf);
108 mutex_unlock(&ar->mutex);
109 return err;
110 }
111
112 static ssize_t carl9170_debugfs_write(struct file *file,
113 const char __user *userbuf, size_t count, loff_t *ppos)
114 {
115 struct carl9170_debugfs_fops *dfops;
116 struct ar9170 *ar;
117 char *buf = NULL;
118 int err = 0;
119
120 if (!count)
121 return 0;
122
123 if (count > PAGE_SIZE)
124 return -E2BIG;
125
126 ar = file->private_data;
127
128 if (!ar)
129 return -ENODEV;
130 dfops = container_of(file->f_op, struct carl9170_debugfs_fops, fops);
131
132 if (!dfops->write)
133 return -ENOSYS;
134
135 buf = vmalloc(count);
136 if (!buf)
137 return -ENOMEM;
138
139 if (copy_from_user(buf, userbuf, count)) {
140 err = -EFAULT;
141 goto out_free;
142 }
143
144 if (mutex_trylock(&ar->mutex) == 0) {
145 err = -EAGAIN;
146 goto out_free;
147 }
148
149 if (!CHK_DEV_STATE(ar, dfops->req_dev_state)) {
150 err = -ENODEV;
151 goto out_unlock;
152 }
153
154 err = dfops->write(ar, buf, count);
155 if (err)
156 goto out_unlock;
157
158 out_unlock:
159 mutex_unlock(&ar->mutex);
160
161 out_free:
162 vfree(buf);
163 return err;
164 }
165
166 #define __DEBUGFS_DECLARE_FILE(name, _read, _write, _read_bufsize, \
167 _attr, _dstate) \
168 static const struct carl9170_debugfs_fops carl_debugfs_##name ##_ops = {\
169 .read_bufsize = _read_bufsize, \
170 .read = _read, \
171 .write = _write, \
172 .attr = _attr, \
173 .req_dev_state = _dstate, \
174 .fops = { \
175 .open = simple_open, \
176 .read = carl9170_debugfs_read, \
177 .write = carl9170_debugfs_write, \
178 .owner = THIS_MODULE \
179 }, \
180 }
181
182 #define DEBUGFS_DECLARE_FILE(name, _read, _write, _read_bufsize, _attr) \
183 __DEBUGFS_DECLARE_FILE(name, _read, _write, _read_bufsize, \
184 _attr, CARL9170_STARTED) \
185
186 #define DEBUGFS_DECLARE_RO_FILE(name, _read_bufsize) \
187 DEBUGFS_DECLARE_FILE(name, carl9170_debugfs_##name ##_read, \
188 NULL, _read_bufsize, S_IRUSR)
189
190 #define DEBUGFS_DECLARE_WO_FILE(name) \
191 DEBUGFS_DECLARE_FILE(name, NULL, carl9170_debugfs_##name ##_write,\
192 0, S_IWUSR)
193
194 #define DEBUGFS_DECLARE_RW_FILE(name, _read_bufsize) \
195 DEBUGFS_DECLARE_FILE(name, carl9170_debugfs_##name ##_read, \
196 carl9170_debugfs_##name ##_write, \
197 _read_bufsize, S_IRUSR | S_IWUSR)
198
199 #define __DEBUGFS_DECLARE_RW_FILE(name, _read_bufsize, _dstate) \
200 __DEBUGFS_DECLARE_FILE(name, carl9170_debugfs_##name ##_read, \
201 carl9170_debugfs_##name ##_write, \
202 _read_bufsize, S_IRUSR | S_IWUSR, _dstate)
203
204 #define DEBUGFS_READONLY_FILE(name, _read_bufsize, fmt, value...) \
205 static char *carl9170_debugfs_ ##name ## _read(struct ar9170 *ar, \
206 char *buf, size_t buf_size,\
207 ssize_t *len) \
208 { \
209 ADD(buf, *len, buf_size, fmt "\n", ##value); \
210 return buf; \
211 } \
212 DEBUGFS_DECLARE_RO_FILE(name, _read_bufsize)
213
214 static char *carl9170_debugfs_mem_usage_read(struct ar9170 *ar, char *buf,
215 size_t bufsize, ssize_t *len)
216 {
217 ADD(buf, *len, bufsize, "jar: [");
218
219 spin_lock_bh(&ar->mem_lock);
220
221 *len += bitmap_scnprintf(&buf[*len], bufsize - *len,
222 ar->mem_bitmap, ar->fw.mem_blocks);
223
224 ADD(buf, *len, bufsize, "]\n");
225
226 ADD(buf, *len, bufsize, "cookies: used:%3d / total:%3d, allocs:%d\n",
227 bitmap_weight(ar->mem_bitmap, ar->fw.mem_blocks),
228 ar->fw.mem_blocks, atomic_read(&ar->mem_allocs));
229
230 ADD(buf, *len, bufsize, "memory: free:%3d (%3d KiB) / total:%3d KiB)\n",
231 atomic_read(&ar->mem_free_blocks),
232 (atomic_read(&ar->mem_free_blocks) * ar->fw.mem_block_size) / 1024,
233 (ar->fw.mem_blocks * ar->fw.mem_block_size) / 1024);
234
235 spin_unlock_bh(&ar->mem_lock);
236
237 return buf;
238 }
239 DEBUGFS_DECLARE_RO_FILE(mem_usage, 512);
240
241 static char *carl9170_debugfs_qos_stat_read(struct ar9170 *ar, char *buf,
242 size_t bufsize, ssize_t *len)
243 {
244 ADD(buf, *len, bufsize, "%s QoS AC\n", modparam_noht ? "Hardware" :
245 "Software");
246
247 ADD(buf, *len, bufsize, "[ VO VI "
248 " BE BK ]\n");
249
250 spin_lock_bh(&ar->tx_stats_lock);
251 ADD(buf, *len, bufsize, "[length/limit length/limit "
252 "length/limit length/limit ]\n"
253 "[ %3d/%3d %3d/%3d "
254 " %3d/%3d %3d/%3d ]\n\n",
255 ar->tx_stats[0].len, ar->tx_stats[0].limit,
256 ar->tx_stats[1].len, ar->tx_stats[1].limit,
257 ar->tx_stats[2].len, ar->tx_stats[2].limit,
258 ar->tx_stats[3].len, ar->tx_stats[3].limit);
259
260 ADD(buf, *len, bufsize, "[ total total "
261 " total total ]\n"
262 "[%10d %10d %10d %10d ]\n\n",
263 ar->tx_stats[0].count, ar->tx_stats[1].count,
264 ar->tx_stats[2].count, ar->tx_stats[3].count);
265
266 spin_unlock_bh(&ar->tx_stats_lock);
267
268 ADD(buf, *len, bufsize, "[ pend/waittx pend/waittx "
269 " pend/waittx pend/waittx]\n"
270 "[ %3d/%3d %3d/%3d "
271 " %3d/%3d %3d/%3d ]\n\n",
272 skb_queue_len(&ar->tx_pending[0]),
273 skb_queue_len(&ar->tx_status[0]),
274 skb_queue_len(&ar->tx_pending[1]),
275 skb_queue_len(&ar->tx_status[1]),
276 skb_queue_len(&ar->tx_pending[2]),
277 skb_queue_len(&ar->tx_status[2]),
278 skb_queue_len(&ar->tx_pending[3]),
279 skb_queue_len(&ar->tx_status[3]));
280
281 return buf;
282 }
283 DEBUGFS_DECLARE_RO_FILE(qos_stat, 512);
284
285 static void carl9170_debugfs_format_frame(struct ar9170 *ar,
286 struct sk_buff *skb, const char *prefix, char *buf,
287 ssize_t *off, ssize_t bufsize)
288 {
289 struct _carl9170_tx_superframe *txc = (void *) skb->data;
290 struct ieee80211_tx_info *txinfo = IEEE80211_SKB_CB(skb);
291 struct carl9170_tx_info *arinfo = (void *) txinfo->rate_driver_data;
292 struct ieee80211_hdr *hdr = (void *) txc->frame_data;
293
294 ADD(buf, *off, bufsize, "%s %p, c:%2x, DA:%pM, sq:%4d, mc:%.4x, "
295 "pc:%.8x, to:%d ms\n", prefix, skb, txc->s.cookie,
296 ieee80211_get_DA(hdr), get_seq_h(hdr),
297 le16_to_cpu(txc->f.mac_control), le32_to_cpu(txc->f.phy_control),
298 jiffies_to_msecs(jiffies - arinfo->timeout));
299 }
300
301
302 static char *carl9170_debugfs_ampdu_state_read(struct ar9170 *ar, char *buf,
303 size_t bufsize, ssize_t *len)
304 {
305 struct carl9170_sta_tid *iter;
306 struct sk_buff *skb;
307 int cnt = 0, fc;
308 int offset;
309
310 rcu_read_lock();
311 list_for_each_entry_rcu(iter, &ar->tx_ampdu_list, list) {
312
313 spin_lock_bh(&iter->lock);
314 ADD(buf, *len, bufsize, "Entry: #%2d TID:%1d, BSN:%4d, "
315 "SNX:%4d, HSN:%4d, BAW:%2d, state:%1d, toggles:%d\n",
316 cnt, iter->tid, iter->bsn, iter->snx, iter->hsn,
317 iter->max, iter->state, iter->counter);
318
319 ADD(buf, *len, bufsize, "\tWindow: [");
320
321 *len += bitmap_scnprintf(&buf[*len], bufsize - *len,
322 iter->bitmap, CARL9170_BAW_BITS);
323
324 #define BM_STR_OFF(offset) \
325 ((CARL9170_BAW_BITS - (offset) - 1) / 4 + \
326 (CARL9170_BAW_BITS - (offset) - 1) / 32 + 1)
327
328 ADD(buf, *len, bufsize, ",W]\n");
329
330 offset = BM_STR_OFF(0);
331 ADD(buf, *len, bufsize, "\tBase Seq: %*s\n", offset, "T");
332
333 offset = BM_STR_OFF(SEQ_DIFF(iter->snx, iter->bsn));
334 ADD(buf, *len, bufsize, "\tNext Seq: %*s\n", offset, "W");
335
336 offset = BM_STR_OFF(((int)iter->hsn - (int)iter->bsn) %
337 CARL9170_BAW_BITS);
338 ADD(buf, *len, bufsize, "\tLast Seq: %*s\n", offset, "N");
339
340 ADD(buf, *len, bufsize, "\tPre-Aggregation reorder buffer: "
341 " currently queued:%d\n", skb_queue_len(&iter->queue));
342
343 fc = 0;
344 skb_queue_walk(&iter->queue, skb) {
345 char prefix[32];
346
347 snprintf(prefix, sizeof(prefix), "\t\t%3d :", fc);
348 carl9170_debugfs_format_frame(ar, skb, prefix, buf,
349 len, bufsize);
350
351 fc++;
352 }
353 spin_unlock_bh(&iter->lock);
354 cnt++;
355 }
356 rcu_read_unlock();
357
358 return buf;
359 }
360 DEBUGFS_DECLARE_RO_FILE(ampdu_state, 8000);
361
362 static void carl9170_debugfs_queue_dump(struct ar9170 *ar, char *buf,
363 ssize_t *len, size_t bufsize, struct sk_buff_head *queue)
364 {
365 struct sk_buff *skb;
366 char prefix[16];
367 int fc = 0;
368
369 spin_lock_bh(&queue->lock);
370 skb_queue_walk(queue, skb) {
371 snprintf(prefix, sizeof(prefix), "%3d :", fc);
372 carl9170_debugfs_format_frame(ar, skb, prefix, buf,
373 len, bufsize);
374 fc++;
375 }
376 spin_unlock_bh(&queue->lock);
377 }
378
379 #define DEBUGFS_QUEUE_DUMP(q, qi) \
380 static char *carl9170_debugfs_##q ##_##qi ##_read(struct ar9170 *ar, \
381 char *buf, size_t bufsize, ssize_t *len) \
382 { \
383 carl9170_debugfs_queue_dump(ar, buf, len, bufsize, &ar->q[qi]); \
384 return buf; \
385 } \
386 DEBUGFS_DECLARE_RO_FILE(q##_##qi, 8000);
387
388 static char *carl9170_debugfs_sta_psm_read(struct ar9170 *ar, char *buf,
389 size_t bufsize, ssize_t *len)
390 {
391 ADD(buf, *len, bufsize, "psm state: %s\n", (ar->ps.off_override ?
392 "FORCE CAM" : (ar->ps.state ? "PSM" : "CAM")));
393
394 ADD(buf, *len, bufsize, "sleep duration: %d ms.\n", ar->ps.sleep_ms);
395 ADD(buf, *len, bufsize, "last power-state transition: %d ms ago.\n",
396 jiffies_to_msecs(jiffies - ar->ps.last_action));
397 ADD(buf, *len, bufsize, "last CAM->PSM transition: %d ms ago.\n",
398 jiffies_to_msecs(jiffies - ar->ps.last_slept));
399
400 return buf;
401 }
402 DEBUGFS_DECLARE_RO_FILE(sta_psm, 160);
403
404 static char *carl9170_debugfs_tx_stuck_read(struct ar9170 *ar, char *buf,
405 size_t bufsize, ssize_t *len)
406 {
407 int i;
408
409 for (i = 0; i < ar->hw->queues; i++) {
410 ADD(buf, *len, bufsize, "TX queue [%d]: %10d max:%10d ms.\n",
411 i, ieee80211_queue_stopped(ar->hw, i) ?
412 jiffies_to_msecs(jiffies - ar->queue_stop_timeout[i]) : 0,
413 jiffies_to_msecs(ar->max_queue_stop_timeout[i]));
414
415 ar->max_queue_stop_timeout[i] = 0;
416 }
417
418 return buf;
419 }
420 DEBUGFS_DECLARE_RO_FILE(tx_stuck, 180);
421
422 static char *carl9170_debugfs_phy_noise_read(struct ar9170 *ar, char *buf,
423 size_t bufsize, ssize_t *len)
424 {
425 int err;
426
427 err = carl9170_get_noisefloor(ar);
428 if (err) {
429 *len = err;
430 return buf;
431 }
432
433 ADD(buf, *len, bufsize, "Chain 0: %10d dBm, ext. chan.:%10d dBm\n",
434 ar->noise[0], ar->noise[2]);
435 ADD(buf, *len, bufsize, "Chain 2: %10d dBm, ext. chan.:%10d dBm\n",
436 ar->noise[1], ar->noise[3]);
437
438 return buf;
439 }
440 DEBUGFS_DECLARE_RO_FILE(phy_noise, 180);
441
442 static char *carl9170_debugfs_vif_dump_read(struct ar9170 *ar, char *buf,
443 size_t bufsize, ssize_t *len)
444 {
445 struct carl9170_vif_info *iter;
446 int i = 0;
447
448 ADD(buf, *len, bufsize, "registered VIFs:%d \\ %d\n",
449 ar->vifs, ar->fw.vif_num);
450
451 ADD(buf, *len, bufsize, "VIF bitmap: [");
452
453 *len += bitmap_scnprintf(&buf[*len], bufsize - *len,
454 &ar->vif_bitmap, ar->fw.vif_num);
455
456 ADD(buf, *len, bufsize, "]\n");
457
458 rcu_read_lock();
459 list_for_each_entry_rcu(iter, &ar->vif_list, list) {
460 struct ieee80211_vif *vif = carl9170_get_vif(iter);
461 ADD(buf, *len, bufsize, "\t%d = [%s VIF, id:%d, type:%x "
462 " mac:%pM %s]\n", i, (carl9170_get_main_vif(ar) == vif ?
463 "Master" : " Slave"), iter->id, vif->type, vif->addr,
464 iter->enable_beacon ? "beaconing " : "");
465 i++;
466 }
467 rcu_read_unlock();
468
469 return buf;
470 }
471 DEBUGFS_DECLARE_RO_FILE(vif_dump, 8000);
472
473 #define UPDATE_COUNTER(ar, name) ({ \
474 u32 __tmp[ARRAY_SIZE(name##_regs)]; \
475 unsigned int __i, __err = -ENODEV; \
476 \
477 for (__i = 0; __i < ARRAY_SIZE(name##_regs); __i++) { \
478 __tmp[__i] = name##_regs[__i].reg; \
479 ar->debug.stats.name##_counter[__i] = 0; \
480 } \
481 \
482 if (IS_STARTED(ar)) \
483 __err = carl9170_read_mreg(ar, ARRAY_SIZE(name##_regs), \
484 __tmp, ar->debug.stats.name##_counter); \
485 (__err); })
486
487 #define TALLY_SUM_UP(ar, name) do { \
488 unsigned int __i; \
489 \
490 for (__i = 0; __i < ARRAY_SIZE(name##_regs); __i++) { \
491 ar->debug.stats.name##_sum[__i] += \
492 ar->debug.stats.name##_counter[__i]; \
493 } \
494 } while (0)
495
496 #define DEBUGFS_HW_TALLY_FILE(name, f) \
497 static char *carl9170_debugfs_##name ## _read(struct ar9170 *ar, \
498 char *dum, size_t bufsize, ssize_t *ret) \
499 { \
500 char *buf; \
501 int i, max_len, err; \
502 \
503 max_len = ARRAY_SIZE(name##_regs) * 80; \
504 buf = vmalloc(max_len); \
505 if (!buf) \
506 return NULL; \
507 \
508 err = UPDATE_COUNTER(ar, name); \
509 if (err) { \
510 *ret = err; \
511 return buf; \
512 } \
513 \
514 TALLY_SUM_UP(ar, name); \
515 \
516 for (i = 0; i < ARRAY_SIZE(name##_regs); i++) { \
517 ADD(buf, *ret, max_len, "%22s = %" f "[+%" f "]\n", \
518 name##_regs[i].nreg, ar->debug.stats.name ##_sum[i],\
519 ar->debug.stats.name ##_counter[i]); \
520 } \
521 \
522 return buf; \
523 } \
524 DEBUGFS_DECLARE_RO_FILE(name, 0);
525
526 #define DEBUGFS_HW_REG_FILE(name, f) \
527 static char *carl9170_debugfs_##name ## _read(struct ar9170 *ar, \
528 char *dum, size_t bufsize, ssize_t *ret) \
529 { \
530 char *buf; \
531 int i, max_len, err; \
532 \
533 max_len = ARRAY_SIZE(name##_regs) * 80; \
534 buf = vmalloc(max_len); \
535 if (!buf) \
536 return NULL; \
537 \
538 err = UPDATE_COUNTER(ar, name); \
539 if (err) { \
540 *ret = err; \
541 return buf; \
542 } \
543 \
544 for (i = 0; i < ARRAY_SIZE(name##_regs); i++) { \
545 ADD(buf, *ret, max_len, "%22s = %" f "\n", \
546 name##_regs[i].nreg, \
547 ar->debug.stats.name##_counter[i]); \
548 } \
549 \
550 return buf; \
551 } \
552 DEBUGFS_DECLARE_RO_FILE(name, 0);
553
554 static ssize_t carl9170_debugfs_hw_ioread32_write(struct ar9170 *ar,
555 const char *buf, size_t count)
556 {
557 int err = 0, i, n = 0, max_len = 32, res;
558 unsigned int reg, tmp;
559
560 if (!count)
561 return 0;
562
563 if (count > max_len)
564 return -E2BIG;
565
566 res = sscanf(buf, "0x%X %d", &reg, &n);
567 if (res < 1) {
568 err = -EINVAL;
569 goto out;
570 }
571
572 if (res == 1)
573 n = 1;
574
575 if (n > 15) {
576 err = -EMSGSIZE;
577 goto out;
578 }
579
580 if ((reg >= 0x280000) || ((reg + (n << 2)) >= 0x280000)) {
581 err = -EADDRNOTAVAIL;
582 goto out;
583 }
584
585 if (reg & 3) {
586 err = -EINVAL;
587 goto out;
588 }
589
590 for (i = 0; i < n; i++) {
591 err = carl9170_read_reg(ar, reg + (i << 2), &tmp);
592 if (err)
593 goto out;
594
595 ar->debug.ring[ar->debug.ring_tail].reg = reg + (i << 2);
596 ar->debug.ring[ar->debug.ring_tail].value = tmp;
597 ar->debug.ring_tail++;
598 ar->debug.ring_tail %= CARL9170_DEBUG_RING_SIZE;
599 }
600
601 out:
602 return err ? err : count;
603 }
604
605 static char *carl9170_debugfs_hw_ioread32_read(struct ar9170 *ar, char *buf,
606 size_t bufsize, ssize_t *ret)
607 {
608 int i = 0;
609
610 while (ar->debug.ring_head != ar->debug.ring_tail) {
611 ADD(buf, *ret, bufsize, "%.8x = %.8x\n",
612 ar->debug.ring[ar->debug.ring_head].reg,
613 ar->debug.ring[ar->debug.ring_head].value);
614
615 ar->debug.ring_head++;
616 ar->debug.ring_head %= CARL9170_DEBUG_RING_SIZE;
617
618 if (i++ == 64)
619 break;
620 }
621 ar->debug.ring_head = ar->debug.ring_tail;
622 return buf;
623 }
624 DEBUGFS_DECLARE_RW_FILE(hw_ioread32, CARL9170_DEBUG_RING_SIZE * 40);
625
626 static ssize_t carl9170_debugfs_bug_write(struct ar9170 *ar, const char *buf,
627 size_t count)
628 {
629 int err;
630
631 if (count < 1)
632 return -EINVAL;
633
634 switch (buf[0]) {
635 case 'F':
636 ar->needs_full_reset = true;
637 break;
638
639 case 'R':
640 if (!IS_STARTED(ar)) {
641 err = -EAGAIN;
642 goto out;
643 }
644
645 ar->needs_full_reset = false;
646 break;
647
648 case 'M':
649 err = carl9170_mac_reset(ar);
650 if (err < 0)
651 count = err;
652
653 goto out;
654
655 case 'P':
656 err = carl9170_set_channel(ar, ar->hw->conf.chandef.chan,
657 cfg80211_get_chandef_type(&ar->hw->conf.chandef));
658 if (err < 0)
659 count = err;
660
661 goto out;
662
663 default:
664 return -EINVAL;
665 }
666
667 carl9170_restart(ar, CARL9170_RR_USER_REQUEST);
668
669 out:
670 return count;
671 }
672
673 static char *carl9170_debugfs_bug_read(struct ar9170 *ar, char *buf,
674 size_t bufsize, ssize_t *ret)
675 {
676 ADD(buf, *ret, bufsize, "[P]hy reinit, [R]estart, [F]ull usb reset, "
677 "[M]ac reset\n");
678 ADD(buf, *ret, bufsize, "firmware restarts:%d, last reason:%d\n",
679 ar->restart_counter, ar->last_reason);
680 ADD(buf, *ret, bufsize, "phy reinit errors:%d (%d)\n",
681 ar->total_chan_fail, ar->chan_fail);
682 ADD(buf, *ret, bufsize, "reported firmware errors:%d\n",
683 ar->fw.err_counter);
684 ADD(buf, *ret, bufsize, "reported firmware BUGs:%d\n",
685 ar->fw.bug_counter);
686 ADD(buf, *ret, bufsize, "pending restart requests:%d\n",
687 atomic_read(&ar->pending_restarts));
688 return buf;
689 }
690 __DEBUGFS_DECLARE_RW_FILE(bug, 400, CARL9170_STOPPED);
691
692 static const char *const erp_modes[] = {
693 [CARL9170_ERP_INVALID] = "INVALID",
694 [CARL9170_ERP_AUTO] = "Automatic",
695 [CARL9170_ERP_MAC80211] = "Set by MAC80211",
696 [CARL9170_ERP_OFF] = "Force Off",
697 [CARL9170_ERP_RTS] = "Force RTS",
698 [CARL9170_ERP_CTS] = "Force CTS"
699 };
700
701 static char *carl9170_debugfs_erp_read(struct ar9170 *ar, char *buf,
702 size_t bufsize, ssize_t *ret)
703 {
704 ADD(buf, *ret, bufsize, "ERP Setting: (%d) -> %s\n", ar->erp_mode,
705 erp_modes[ar->erp_mode]);
706 return buf;
707 }
708
709 static ssize_t carl9170_debugfs_erp_write(struct ar9170 *ar, const char *buf,
710 size_t count)
711 {
712 int res, val;
713
714 if (count < 1)
715 return -EINVAL;
716
717 res = sscanf(buf, "%d", &val);
718 if (res != 1)
719 return -EINVAL;
720
721 if (!((val > CARL9170_ERP_INVALID) &&
722 (val < __CARL9170_ERP_NUM)))
723 return -EINVAL;
724
725 ar->erp_mode = val;
726 return count;
727 }
728
729 DEBUGFS_DECLARE_RW_FILE(erp, 80);
730
731 static ssize_t carl9170_debugfs_hw_iowrite32_write(struct ar9170 *ar,
732 const char *buf, size_t count)
733 {
734 int err = 0, max_len = 22, res;
735 u32 reg, val;
736
737 if (!count)
738 return 0;
739
740 if (count > max_len)
741 return -E2BIG;
742
743 res = sscanf(buf, "0x%X 0x%X", &reg, &val);
744 if (res != 2) {
745 err = -EINVAL;
746 goto out;
747 }
748
749 if (reg <= 0x100000 || reg >= 0x280000) {
750 err = -EADDRNOTAVAIL;
751 goto out;
752 }
753
754 if (reg & 3) {
755 err = -EINVAL;
756 goto out;
757 }
758
759 err = carl9170_write_reg(ar, reg, val);
760 if (err)
761 goto out;
762
763 out:
764 return err ? err : count;
765 }
766 DEBUGFS_DECLARE_WO_FILE(hw_iowrite32);
767
768 DEBUGFS_HW_TALLY_FILE(hw_tx_tally, "u");
769 DEBUGFS_HW_TALLY_FILE(hw_rx_tally, "u");
770 DEBUGFS_HW_TALLY_FILE(hw_phy_errors, "u");
771 DEBUGFS_HW_REG_FILE(hw_wlan_queue, ".8x");
772 DEBUGFS_HW_REG_FILE(hw_pta_queue, ".8x");
773 DEBUGFS_HW_REG_FILE(hw_ampdu_info, ".8x");
774 DEBUGFS_QUEUE_DUMP(tx_status, 0);
775 DEBUGFS_QUEUE_DUMP(tx_status, 1);
776 DEBUGFS_QUEUE_DUMP(tx_status, 2);
777 DEBUGFS_QUEUE_DUMP(tx_status, 3);
778 DEBUGFS_QUEUE_DUMP(tx_pending, 0);
779 DEBUGFS_QUEUE_DUMP(tx_pending, 1);
780 DEBUGFS_QUEUE_DUMP(tx_pending, 2);
781 DEBUGFS_QUEUE_DUMP(tx_pending, 3);
782 DEBUGFS_READONLY_FILE(usb_tx_anch_urbs, 20, "%d",
783 atomic_read(&ar->tx_anch_urbs));
784 DEBUGFS_READONLY_FILE(usb_rx_anch_urbs, 20, "%d",
785 atomic_read(&ar->rx_anch_urbs));
786 DEBUGFS_READONLY_FILE(usb_rx_work_urbs, 20, "%d",
787 atomic_read(&ar->rx_work_urbs));
788 DEBUGFS_READONLY_FILE(usb_rx_pool_urbs, 20, "%d",
789 atomic_read(&ar->rx_pool_urbs));
790
791 DEBUGFS_READONLY_FILE(tx_total_queued, 20, "%d",
792 atomic_read(&ar->tx_total_queued));
793 DEBUGFS_READONLY_FILE(tx_ampdu_scheduler, 20, "%d",
794 atomic_read(&ar->tx_ampdu_scheduler));
795
796 DEBUGFS_READONLY_FILE(tx_total_pending, 20, "%d",
797 atomic_read(&ar->tx_total_pending));
798
799 DEBUGFS_READONLY_FILE(tx_ampdu_list_len, 20, "%d",
800 ar->tx_ampdu_list_len);
801
802 DEBUGFS_READONLY_FILE(tx_ampdu_upload, 20, "%d",
803 atomic_read(&ar->tx_ampdu_upload));
804
805 DEBUGFS_READONLY_FILE(tx_janitor_last_run, 64, "last run:%d ms ago",
806 jiffies_to_msecs(jiffies - ar->tx_janitor_last_run));
807
808 DEBUGFS_READONLY_FILE(tx_dropped, 20, "%d", ar->tx_dropped);
809
810 DEBUGFS_READONLY_FILE(rx_dropped, 20, "%d", ar->rx_dropped);
811
812 DEBUGFS_READONLY_FILE(sniffer_enabled, 20, "%d", ar->sniffer_enabled);
813 DEBUGFS_READONLY_FILE(rx_software_decryption, 20, "%d",
814 ar->rx_software_decryption);
815 DEBUGFS_READONLY_FILE(ampdu_factor, 20, "%d",
816 ar->current_factor);
817 DEBUGFS_READONLY_FILE(ampdu_density, 20, "%d",
818 ar->current_density);
819
820 DEBUGFS_READONLY_FILE(beacon_int, 20, "%d TU", ar->global_beacon_int);
821 DEBUGFS_READONLY_FILE(pretbtt, 20, "%d TU", ar->global_pretbtt);
822
823 void carl9170_debugfs_register(struct ar9170 *ar)
824 {
825 ar->debug_dir = debugfs_create_dir(KBUILD_MODNAME,
826 ar->hw->wiphy->debugfsdir);
827
828 #define DEBUGFS_ADD(name) \
829 debugfs_create_file(#name, carl_debugfs_##name ##_ops.attr, \
830 ar->debug_dir, ar, \
831 &carl_debugfs_##name ## _ops.fops);
832
833 DEBUGFS_ADD(usb_tx_anch_urbs);
834 DEBUGFS_ADD(usb_rx_pool_urbs);
835 DEBUGFS_ADD(usb_rx_anch_urbs);
836 DEBUGFS_ADD(usb_rx_work_urbs);
837
838 DEBUGFS_ADD(tx_total_queued);
839 DEBUGFS_ADD(tx_total_pending);
840 DEBUGFS_ADD(tx_dropped);
841 DEBUGFS_ADD(tx_stuck);
842 DEBUGFS_ADD(tx_ampdu_upload);
843 DEBUGFS_ADD(tx_ampdu_scheduler);
844 DEBUGFS_ADD(tx_ampdu_list_len);
845
846 DEBUGFS_ADD(rx_dropped);
847 DEBUGFS_ADD(sniffer_enabled);
848 DEBUGFS_ADD(rx_software_decryption);
849
850 DEBUGFS_ADD(mem_usage);
851 DEBUGFS_ADD(qos_stat);
852 DEBUGFS_ADD(sta_psm);
853 DEBUGFS_ADD(ampdu_state);
854
855 DEBUGFS_ADD(hw_tx_tally);
856 DEBUGFS_ADD(hw_rx_tally);
857 DEBUGFS_ADD(hw_phy_errors);
858 DEBUGFS_ADD(phy_noise);
859
860 DEBUGFS_ADD(hw_wlan_queue);
861 DEBUGFS_ADD(hw_pta_queue);
862 DEBUGFS_ADD(hw_ampdu_info);
863
864 DEBUGFS_ADD(ampdu_density);
865 DEBUGFS_ADD(ampdu_factor);
866
867 DEBUGFS_ADD(tx_janitor_last_run);
868
869 DEBUGFS_ADD(tx_status_0);
870 DEBUGFS_ADD(tx_status_1);
871 DEBUGFS_ADD(tx_status_2);
872 DEBUGFS_ADD(tx_status_3);
873
874 DEBUGFS_ADD(tx_pending_0);
875 DEBUGFS_ADD(tx_pending_1);
876 DEBUGFS_ADD(tx_pending_2);
877 DEBUGFS_ADD(tx_pending_3);
878
879 DEBUGFS_ADD(hw_ioread32);
880 DEBUGFS_ADD(hw_iowrite32);
881 DEBUGFS_ADD(bug);
882
883 DEBUGFS_ADD(erp);
884
885 DEBUGFS_ADD(vif_dump);
886
887 DEBUGFS_ADD(beacon_int);
888 DEBUGFS_ADD(pretbtt);
889
890 #undef DEBUGFS_ADD
891 }
892
893 void carl9170_debugfs_unregister(struct ar9170 *ar)
894 {
895 debugfs_remove_recursive(ar->debug_dir);
896 }
Linux with added FPC-III support