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spi-topcliff-pch: add recovery processing in case wait-event timeout
[zen-stable.git] / drivers / net / wireless / ath / carl9170 / debug.c
blob3c164226687f54ea74ca18a96e665eb921ae4774
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/init.h>
41 #include <linux/slab.h>
42 #include <linux/module.h>
43 #include <linux/seq_file.h>
44 #include <linux/vmalloc.h>
45 #include "carl9170.h"
46 #include "cmd.h"
47
48 #define ADD(buf, off, max, fmt, args...) \
49 off += snprintf(&buf[off], max - off, fmt, ##args);
50
51 static int carl9170_debugfs_open(struct inode *inode, struct file *file)
52 {
53 file->private_data = inode->i_private;
54 return 0;
55 }
56
57 struct carl9170_debugfs_fops {
58 unsigned int read_bufsize;
59 umode_t attr;
60 char *(*read)(struct ar9170 *ar, char *buf, size_t bufsize,
61 ssize_t *len);
62 ssize_t (*write)(struct ar9170 *aru, const char *buf, size_t size);
63 const struct file_operations fops;
64
65 enum carl9170_device_state req_dev_state;
66 };
67
68 static ssize_t carl9170_debugfs_read(struct file *file, char __user *userbuf,
69 size_t count, loff_t *ppos)
70 {
71 struct carl9170_debugfs_fops *dfops;
72 struct ar9170 *ar;
73 char *buf = NULL, *res_buf = NULL;
74 ssize_t ret = 0;
75 int err = 0;
76
77 if (!count)
78 return 0;
79
80 ar = file->private_data;
81
82 if (!ar)
83 return -ENODEV;
84 dfops = container_of(file->f_op, struct carl9170_debugfs_fops, fops);
85
86 if (!dfops->read)
87 return -ENOSYS;
88
89 if (dfops->read_bufsize) {
90 buf = vmalloc(dfops->read_bufsize);
91 if (!buf)
92 return -ENOMEM;
93 }
94
95 mutex_lock(&ar->mutex);
96 if (!CHK_DEV_STATE(ar, dfops->req_dev_state)) {
97 err = -ENODEV;
98 res_buf = buf;
99 goto out_free;
100 }
101
102 res_buf = dfops->read(ar, buf, dfops->read_bufsize, &ret);
103
104 if (ret > 0)
105 err = simple_read_from_buffer(userbuf, count, ppos,
106 res_buf, ret);
107 else
108 err = ret;
109
110 WARN_ON_ONCE(dfops->read_bufsize && (res_buf != buf));
111
112 out_free:
113 vfree(res_buf);
114 mutex_unlock(&ar->mutex);
115 return err;
116 }
117
118 static ssize_t carl9170_debugfs_write(struct file *file,
119 const char __user *userbuf, size_t count, loff_t *ppos)
120 {
121 struct carl9170_debugfs_fops *dfops;
122 struct ar9170 *ar;
123 char *buf = NULL;
124 int err = 0;
125
126 if (!count)
127 return 0;
128
129 if (count > PAGE_SIZE)
130 return -E2BIG;
131
132 ar = file->private_data;
133
134 if (!ar)
135 return -ENODEV;
136 dfops = container_of(file->f_op, struct carl9170_debugfs_fops, fops);
137
138 if (!dfops->write)
139 return -ENOSYS;
140
141 buf = vmalloc(count);
142 if (!buf)
143 return -ENOMEM;
144
145 if (copy_from_user(buf, userbuf, count)) {
146 err = -EFAULT;
147 goto out_free;
148 }
149
150 if (mutex_trylock(&ar->mutex) == 0) {
151 err = -EAGAIN;
152 goto out_free;
153 }
154
155 if (!CHK_DEV_STATE(ar, dfops->req_dev_state)) {
156 err = -ENODEV;
157 goto out_unlock;
158 }
159
160 err = dfops->write(ar, buf, count);
161 if (err)
162 goto out_unlock;
163
164 out_unlock:
165 mutex_unlock(&ar->mutex);
166
167 out_free:
168 vfree(buf);
169 return err;
170 }
171
172 #define __DEBUGFS_DECLARE_FILE(name, _read, _write, _read_bufsize, \
173 _attr, _dstate) \
174 static const struct carl9170_debugfs_fops carl_debugfs_##name ##_ops = {\
175 .read_bufsize = _read_bufsize, \
176 .read = _read, \
177 .write = _write, \
178 .attr = _attr, \
179 .req_dev_state = _dstate, \
180 .fops = { \
181 .open = carl9170_debugfs_open, \
182 .read = carl9170_debugfs_read, \
183 .write = carl9170_debugfs_write, \
184 .owner = THIS_MODULE \
185 }, \
186 }
187
188 #define DEBUGFS_DECLARE_FILE(name, _read, _write, _read_bufsize, _attr) \
189 __DEBUGFS_DECLARE_FILE(name, _read, _write, _read_bufsize, \
190 _attr, CARL9170_STARTED) \
191
192 #define DEBUGFS_DECLARE_RO_FILE(name, _read_bufsize) \
193 DEBUGFS_DECLARE_FILE(name, carl9170_debugfs_##name ##_read, \
194 NULL, _read_bufsize, S_IRUSR)
195
196 #define DEBUGFS_DECLARE_WO_FILE(name) \
197 DEBUGFS_DECLARE_FILE(name, NULL, carl9170_debugfs_##name ##_write,\
198 0, S_IWUSR)
199
200 #define DEBUGFS_DECLARE_RW_FILE(name, _read_bufsize) \
201 DEBUGFS_DECLARE_FILE(name, carl9170_debugfs_##name ##_read, \
202 carl9170_debugfs_##name ##_write, \
203 _read_bufsize, S_IRUSR | S_IWUSR)
204
205 #define __DEBUGFS_DECLARE_RW_FILE(name, _read_bufsize, _dstate) \
206 __DEBUGFS_DECLARE_FILE(name, carl9170_debugfs_##name ##_read, \
207 carl9170_debugfs_##name ##_write, \
208 _read_bufsize, S_IRUSR | S_IWUSR, _dstate)
209
210 #define DEBUGFS_READONLY_FILE(name, _read_bufsize, fmt, value...) \
211 static char *carl9170_debugfs_ ##name ## _read(struct ar9170 *ar, \
212 char *buf, size_t buf_size,\
213 ssize_t *len) \
214 { \
215 ADD(buf, *len, buf_size, fmt "\n", ##value); \
216 return buf; \
217 } \
218 DEBUGFS_DECLARE_RO_FILE(name, _read_bufsize)
219
220 static char *carl9170_debugfs_mem_usage_read(struct ar9170 *ar, char *buf,
221 size_t bufsize, ssize_t *len)
222 {
223 ADD(buf, *len, bufsize, "jar: [");
224
225 spin_lock_bh(&ar->mem_lock);
226
227 *len += bitmap_scnprintf(&buf[*len], bufsize - *len,
228 ar->mem_bitmap, ar->fw.mem_blocks);
229
230 ADD(buf, *len, bufsize, "]\n");
231
232 ADD(buf, *len, bufsize, "cookies: used:%3d / total:%3d, allocs:%d\n",
233 bitmap_weight(ar->mem_bitmap, ar->fw.mem_blocks),
234 ar->fw.mem_blocks, atomic_read(&ar->mem_allocs));
235
236 ADD(buf, *len, bufsize, "memory: free:%3d (%3d KiB) / total:%3d KiB)\n",
237 atomic_read(&ar->mem_free_blocks),
238 (atomic_read(&ar->mem_free_blocks) * ar->fw.mem_block_size) / 1024,
239 (ar->fw.mem_blocks * ar->fw.mem_block_size) / 1024);
240
241 spin_unlock_bh(&ar->mem_lock);
242
243 return buf;
244 }
245 DEBUGFS_DECLARE_RO_FILE(mem_usage, 512);
246
247 static char *carl9170_debugfs_qos_stat_read(struct ar9170 *ar, char *buf,
248 size_t bufsize, ssize_t *len)
249 {
250 ADD(buf, *len, bufsize, "%s QoS AC\n", modparam_noht ? "Hardware" :
251 "Software");
252
253 ADD(buf, *len, bufsize, "[ VO VI "
254 " BE BK ]\n");
255
256 spin_lock_bh(&ar->tx_stats_lock);
257 ADD(buf, *len, bufsize, "[length/limit length/limit "
258 "length/limit length/limit ]\n"
259 "[ %3d/%3d %3d/%3d "
260 " %3d/%3d %3d/%3d ]\n\n",
261 ar->tx_stats[0].len, ar->tx_stats[0].limit,
262 ar->tx_stats[1].len, ar->tx_stats[1].limit,
263 ar->tx_stats[2].len, ar->tx_stats[2].limit,
264 ar->tx_stats[3].len, ar->tx_stats[3].limit);
265
266 ADD(buf, *len, bufsize, "[ total total "
267 " total total ]\n"
268 "[%10d %10d %10d %10d ]\n\n",
269 ar->tx_stats[0].count, ar->tx_stats[1].count,
270 ar->tx_stats[2].count, ar->tx_stats[3].count);
271
272 spin_unlock_bh(&ar->tx_stats_lock);
273
274 ADD(buf, *len, bufsize, "[ pend/waittx pend/waittx "
275 " pend/waittx pend/waittx]\n"
276 "[ %3d/%3d %3d/%3d "
277 " %3d/%3d %3d/%3d ]\n\n",
278 skb_queue_len(&ar->tx_pending[0]),
279 skb_queue_len(&ar->tx_status[0]),
280 skb_queue_len(&ar->tx_pending[1]),
281 skb_queue_len(&ar->tx_status[1]),
282 skb_queue_len(&ar->tx_pending[2]),
283 skb_queue_len(&ar->tx_status[2]),
284 skb_queue_len(&ar->tx_pending[3]),
285 skb_queue_len(&ar->tx_status[3]));
286
287 return buf;
288 }
289 DEBUGFS_DECLARE_RO_FILE(qos_stat, 512);
290
291 static void carl9170_debugfs_format_frame(struct ar9170 *ar,
292 struct sk_buff *skb, const char *prefix, char *buf,
293 ssize_t *off, ssize_t bufsize)
294 {
295 struct _carl9170_tx_superframe *txc = (void *) skb->data;
296 struct ieee80211_tx_info *txinfo = IEEE80211_SKB_CB(skb);
297 struct carl9170_tx_info *arinfo = (void *) txinfo->rate_driver_data;
298 struct ieee80211_hdr *hdr = (void *) txc->frame_data;
299
300 ADD(buf, *off, bufsize, "%s %p, c:%2x, DA:%pM, sq:%4d, mc:%.4x, "
301 "pc:%.8x, to:%d ms\n", prefix, skb, txc->s.cookie,
302 ieee80211_get_DA(hdr), get_seq_h(hdr),
303 le16_to_cpu(txc->f.mac_control), le32_to_cpu(txc->f.phy_control),
304 jiffies_to_msecs(jiffies - arinfo->timeout));
305 }
306
307
308 static char *carl9170_debugfs_ampdu_state_read(struct ar9170 *ar, char *buf,
309 size_t bufsize, ssize_t *len)
310 {
311 struct carl9170_sta_tid *iter;
312 struct sk_buff *skb;
313 int cnt = 0, fc;
314 int offset;
315
316 rcu_read_lock();
317 list_for_each_entry_rcu(iter, &ar->tx_ampdu_list, list) {
318
319 spin_lock_bh(&iter->lock);
320 ADD(buf, *len, bufsize, "Entry: #%2d TID:%1d, BSN:%4d, "
321 "SNX:%4d, HSN:%4d, BAW:%2d, state:%1d, toggles:%d\n",
322 cnt, iter->tid, iter->bsn, iter->snx, iter->hsn,
323 iter->max, iter->state, iter->counter);
324
325 ADD(buf, *len, bufsize, "\tWindow: [");
326
327 *len += bitmap_scnprintf(&buf[*len], bufsize - *len,
328 iter->bitmap, CARL9170_BAW_BITS);
329
330 #define BM_STR_OFF(offset) \
331 ((CARL9170_BAW_BITS - (offset) - 1) / 4 + \
332 (CARL9170_BAW_BITS - (offset) - 1) / 32 + 1)
333
334 ADD(buf, *len, bufsize, ",W]\n");
335
336 offset = BM_STR_OFF(0);
337 ADD(buf, *len, bufsize, "\tBase Seq: %*s\n", offset, "T");
338
339 offset = BM_STR_OFF(SEQ_DIFF(iter->snx, iter->bsn));
340 ADD(buf, *len, bufsize, "\tNext Seq: %*s\n", offset, "W");
341
342 offset = BM_STR_OFF(((int)iter->hsn - (int)iter->bsn) %
343 CARL9170_BAW_BITS);
344 ADD(buf, *len, bufsize, "\tLast Seq: %*s\n", offset, "N");
345
346 ADD(buf, *len, bufsize, "\tPre-Aggregation reorder buffer: "
347 " currently queued:%d\n", skb_queue_len(&iter->queue));
348
349 fc = 0;
350 skb_queue_walk(&iter->queue, skb) {
351 char prefix[32];
352
353 snprintf(prefix, sizeof(prefix), "\t\t%3d :", fc);
354 carl9170_debugfs_format_frame(ar, skb, prefix, buf,
355 len, bufsize);
356
357 fc++;
358 }
359 spin_unlock_bh(&iter->lock);
360 cnt++;
361 }
362 rcu_read_unlock();
363
364 return buf;
365 }
366 DEBUGFS_DECLARE_RO_FILE(ampdu_state, 8000);
367
368 static void carl9170_debugfs_queue_dump(struct ar9170 *ar, char *buf,
369 ssize_t *len, size_t bufsize, struct sk_buff_head *queue)
370 {
371 struct sk_buff *skb;
372 char prefix[16];
373 int fc = 0;
374
375 spin_lock_bh(&queue->lock);
376 skb_queue_walk(queue, skb) {
377 snprintf(prefix, sizeof(prefix), "%3d :", fc);
378 carl9170_debugfs_format_frame(ar, skb, prefix, buf,
379 len, bufsize);
380 fc++;
381 }
382 spin_unlock_bh(&queue->lock);
383 }
384
385 #define DEBUGFS_QUEUE_DUMP(q, qi) \
386 static char *carl9170_debugfs_##q ##_##qi ##_read(struct ar9170 *ar, \
387 char *buf, size_t bufsize, ssize_t *len) \
388 { \
389 carl9170_debugfs_queue_dump(ar, buf, len, bufsize, &ar->q[qi]); \
390 return buf; \
391 } \
392 DEBUGFS_DECLARE_RO_FILE(q##_##qi, 8000);
393
394 static char *carl9170_debugfs_sta_psm_read(struct ar9170 *ar, char *buf,
395 size_t bufsize, ssize_t *len)
396 {
397 ADD(buf, *len, bufsize, "psm state: %s\n", (ar->ps.off_override ?
398 "FORCE CAM" : (ar->ps.state ? "PSM" : "CAM")));
399
400 ADD(buf, *len, bufsize, "sleep duration: %d ms.\n", ar->ps.sleep_ms);
401 ADD(buf, *len, bufsize, "last power-state transition: %d ms ago.\n",
402 jiffies_to_msecs(jiffies - ar->ps.last_action));
403 ADD(buf, *len, bufsize, "last CAM->PSM transition: %d ms ago.\n",
404 jiffies_to_msecs(jiffies - ar->ps.last_slept));
405
406 return buf;
407 }
408 DEBUGFS_DECLARE_RO_FILE(sta_psm, 160);
409
410 static char *carl9170_debugfs_tx_stuck_read(struct ar9170 *ar, char *buf,
411 size_t bufsize, ssize_t *len)
412 {
413 int i;
414
415 for (i = 0; i < ar->hw->queues; i++) {
416 ADD(buf, *len, bufsize, "TX queue [%d]: %10d max:%10d ms.\n",
417 i, ieee80211_queue_stopped(ar->hw, i) ?
418 jiffies_to_msecs(jiffies - ar->queue_stop_timeout[i]) : 0,
419 jiffies_to_msecs(ar->max_queue_stop_timeout[i]));
420
421 ar->max_queue_stop_timeout[i] = 0;
422 }
423
424 return buf;
425 }
426 DEBUGFS_DECLARE_RO_FILE(tx_stuck, 180);
427
428 static char *carl9170_debugfs_phy_noise_read(struct ar9170 *ar, char *buf,
429 size_t bufsize, ssize_t *len)
430 {
431 int err;
432
433 err = carl9170_get_noisefloor(ar);
434 if (err) {
435 *len = err;
436 return buf;
437 }
438
439 ADD(buf, *len, bufsize, "Chain 0: %10d dBm, ext. chan.:%10d dBm\n",
440 ar->noise[0], ar->noise[2]);
441 ADD(buf, *len, bufsize, "Chain 2: %10d dBm, ext. chan.:%10d dBm\n",
442 ar->noise[1], ar->noise[3]);
443
444 return buf;
445 }
446 DEBUGFS_DECLARE_RO_FILE(phy_noise, 180);
447
448 static char *carl9170_debugfs_vif_dump_read(struct ar9170 *ar, char *buf,
449 size_t bufsize, ssize_t *len)
450 {
451 struct carl9170_vif_info *iter;
452 int i = 0;
453
454 ADD(buf, *len, bufsize, "registered VIFs:%d \\ %d\n",
455 ar->vifs, ar->fw.vif_num);
456
457 ADD(buf, *len, bufsize, "VIF bitmap: [");
458
459 *len += bitmap_scnprintf(&buf[*len], bufsize - *len,
460 &ar->vif_bitmap, ar->fw.vif_num);
461
462 ADD(buf, *len, bufsize, "]\n");
463
464 rcu_read_lock();
465 list_for_each_entry_rcu(iter, &ar->vif_list, list) {
466 struct ieee80211_vif *vif = carl9170_get_vif(iter);
467 ADD(buf, *len, bufsize, "\t%d = [%s VIF, id:%d, type:%x "
468 " mac:%pM %s]\n", i, (carl9170_get_main_vif(ar) == vif ?
469 "Master" : " Slave"), iter->id, vif->type, vif->addr,
470 iter->enable_beacon ? "beaconing " : "");
471 i++;
472 }
473 rcu_read_unlock();
474
475 return buf;
476 }
477 DEBUGFS_DECLARE_RO_FILE(vif_dump, 8000);
478
479 #define UPDATE_COUNTER(ar, name) ({ \
480 u32 __tmp[ARRAY_SIZE(name##_regs)]; \
481 unsigned int __i, __err = -ENODEV; \
482 \
483 for (__i = 0; __i < ARRAY_SIZE(name##_regs); __i++) { \
484 __tmp[__i] = name##_regs[__i].reg; \
485 ar->debug.stats.name##_counter[__i] = 0; \
486 } \
487 \
488 if (IS_STARTED(ar)) \
489 __err = carl9170_read_mreg(ar, ARRAY_SIZE(name##_regs), \
490 __tmp, ar->debug.stats.name##_counter); \
491 (__err); })
492
493 #define TALLY_SUM_UP(ar, name) do { \
494 unsigned int __i; \
495 \
496 for (__i = 0; __i < ARRAY_SIZE(name##_regs); __i++) { \
497 ar->debug.stats.name##_sum[__i] += \
498 ar->debug.stats.name##_counter[__i]; \
499 } \
500 } while (0)
501
502 #define DEBUGFS_HW_TALLY_FILE(name, f) \
503 static char *carl9170_debugfs_##name ## _read(struct ar9170 *ar, \
504 char *dum, size_t bufsize, ssize_t *ret) \
505 { \
506 char *buf; \
507 int i, max_len, err; \
508 \
509 max_len = ARRAY_SIZE(name##_regs) * 80; \
510 buf = vmalloc(max_len); \
511 if (!buf) \
512 return NULL; \
513 \
514 err = UPDATE_COUNTER(ar, name); \
515 if (err) { \
516 *ret = err; \
517 return buf; \
518 } \
519 \
520 TALLY_SUM_UP(ar, name); \
521 \
522 for (i = 0; i < ARRAY_SIZE(name##_regs); i++) { \
523 ADD(buf, *ret, max_len, "%22s = %" f "[+%" f "]\n", \
524 name##_regs[i].nreg, ar->debug.stats.name ##_sum[i],\
525 ar->debug.stats.name ##_counter[i]); \
526 } \
527 \
528 return buf; \
529 } \
530 DEBUGFS_DECLARE_RO_FILE(name, 0);
531
532 #define DEBUGFS_HW_REG_FILE(name, f) \
533 static char *carl9170_debugfs_##name ## _read(struct ar9170 *ar, \
534 char *dum, size_t bufsize, ssize_t *ret) \
535 { \
536 char *buf; \
537 int i, max_len, err; \
538 \
539 max_len = ARRAY_SIZE(name##_regs) * 80; \
540 buf = vmalloc(max_len); \
541 if (!buf) \
542 return NULL; \
543 \
544 err = UPDATE_COUNTER(ar, name); \
545 if (err) { \
546 *ret = err; \
547 return buf; \
548 } \
549 \
550 for (i = 0; i < ARRAY_SIZE(name##_regs); i++) { \
551 ADD(buf, *ret, max_len, "%22s = %" f "\n", \
552 name##_regs[i].nreg, \
553 ar->debug.stats.name##_counter[i]); \
554 } \
555 \
556 return buf; \
557 } \
558 DEBUGFS_DECLARE_RO_FILE(name, 0);
559
560 static ssize_t carl9170_debugfs_hw_ioread32_write(struct ar9170 *ar,
561 const char *buf, size_t count)
562 {
563 int err = 0, i, n = 0, max_len = 32, res;
564 unsigned int reg, tmp;
565
566 if (!count)
567 return 0;
568
569 if (count > max_len)
570 return -E2BIG;
571
572 res = sscanf(buf, "0x%X %d", &reg, &n);
573 if (res < 1) {
574 err = -EINVAL;
575 goto out;
576 }
577
578 if (res == 1)
579 n = 1;
580
581 if (n > 15) {
582 err = -EMSGSIZE;
583 goto out;
584 }
585
586 if ((reg >= 0x280000) || ((reg + (n << 2)) >= 0x280000)) {
587 err = -EADDRNOTAVAIL;
588 goto out;
589 }
590
591 if (reg & 3) {
592 err = -EINVAL;
593 goto out;
594 }
595
596 for (i = 0; i < n; i++) {
597 err = carl9170_read_reg(ar, reg + (i << 2), &tmp);
598 if (err)
599 goto out;
600
601 ar->debug.ring[ar->debug.ring_tail].reg = reg + (i << 2);
602 ar->debug.ring[ar->debug.ring_tail].value = tmp;
603 ar->debug.ring_tail++;
604 ar->debug.ring_tail %= CARL9170_DEBUG_RING_SIZE;
605 }
606
607 out:
608 return err ? err : count;
609 }
610
611 static char *carl9170_debugfs_hw_ioread32_read(struct ar9170 *ar, char *buf,
612 size_t bufsize, ssize_t *ret)
613 {
614 int i = 0;
615
616 while (ar->debug.ring_head != ar->debug.ring_tail) {
617 ADD(buf, *ret, bufsize, "%.8x = %.8x\n",
618 ar->debug.ring[ar->debug.ring_head].reg,
619 ar->debug.ring[ar->debug.ring_head].value);
620
621 ar->debug.ring_head++;
622 ar->debug.ring_head %= CARL9170_DEBUG_RING_SIZE;
623
624 if (i++ == 64)
625 break;
626 }
627 ar->debug.ring_head = ar->debug.ring_tail;
628 return buf;
629 }
630 DEBUGFS_DECLARE_RW_FILE(hw_ioread32, CARL9170_DEBUG_RING_SIZE * 40);
631
632 static ssize_t carl9170_debugfs_bug_write(struct ar9170 *ar, const char *buf,
633 size_t count)
634 {
635 int err;
636
637 if (count < 1)
638 return -EINVAL;
639
640 switch (buf[0]) {
641 case 'F':
642 ar->needs_full_reset = true;
643 break;
644
645 case 'R':
646 if (!IS_STARTED(ar)) {
647 err = -EAGAIN;
648 goto out;
649 }
650
651 ar->needs_full_reset = false;
652 break;
653
654 case 'M':
655 err = carl9170_mac_reset(ar);
656 if (err < 0)
657 count = err;
658
659 goto out;
660
661 case 'P':
662 err = carl9170_set_channel(ar, ar->hw->conf.channel,
663 ar->hw->conf.channel_type, CARL9170_RFI_COLD);
664 if (err < 0)
665 count = err;
666
667 goto out;
668
669 default:
670 return -EINVAL;
671 }
672
673 carl9170_restart(ar, CARL9170_RR_USER_REQUEST);
674
675 out:
676 return count;
677 }
678
679 static char *carl9170_debugfs_bug_read(struct ar9170 *ar, char *buf,
680 size_t bufsize, ssize_t *ret)
681 {
682 ADD(buf, *ret, bufsize, "[P]hy reinit, [R]estart, [F]ull usb reset, "
683 "[M]ac reset\n");
684 ADD(buf, *ret, bufsize, "firmware restarts:%d, last reason:%d\n",
685 ar->restart_counter, ar->last_reason);
686 ADD(buf, *ret, bufsize, "phy reinit errors:%d (%d)\n",
687 ar->total_chan_fail, ar->chan_fail);
688 ADD(buf, *ret, bufsize, "reported firmware errors:%d\n",
689 ar->fw.err_counter);
690 ADD(buf, *ret, bufsize, "reported firmware BUGs:%d\n",
691 ar->fw.bug_counter);
692 ADD(buf, *ret, bufsize, "pending restart requests:%d\n",
693 atomic_read(&ar->pending_restarts));
694 return buf;
695 }
696 __DEBUGFS_DECLARE_RW_FILE(bug, 400, CARL9170_STOPPED);
697
698 static const char *const erp_modes[] = {
699 [CARL9170_ERP_INVALID] = "INVALID",
700 [CARL9170_ERP_AUTO] = "Automatic",
701 [CARL9170_ERP_MAC80211] = "Set by MAC80211",
702 [CARL9170_ERP_OFF] = "Force Off",
703 [CARL9170_ERP_RTS] = "Force RTS",
704 [CARL9170_ERP_CTS] = "Force CTS"
705 };
706
707 static char *carl9170_debugfs_erp_read(struct ar9170 *ar, char *buf,
708 size_t bufsize, ssize_t *ret)
709 {
710 ADD(buf, *ret, bufsize, "ERP Setting: (%d) -> %s\n", ar->erp_mode,
711 erp_modes[ar->erp_mode]);
712 return buf;
713 }
714
715 static ssize_t carl9170_debugfs_erp_write(struct ar9170 *ar, const char *buf,
716 size_t count)
717 {
718 int res, val;
719
720 if (count < 1)
721 return -EINVAL;
722
723 res = sscanf(buf, "%d", &val);
724 if (res != 1)
725 return -EINVAL;
726
727 if (!((val > CARL9170_ERP_INVALID) &&
728 (val < __CARL9170_ERP_NUM)))
729 return -EINVAL;
730
731 ar->erp_mode = val;
732 return count;
733 }
734
735 DEBUGFS_DECLARE_RW_FILE(erp, 80);
736
737 static ssize_t carl9170_debugfs_hw_iowrite32_write(struct ar9170 *ar,
738 const char *buf, size_t count)
739 {
740 int err = 0, max_len = 22, res;
741 u32 reg, val;
742
743 if (!count)
744 return 0;
745
746 if (count > max_len)
747 return -E2BIG;
748
749 res = sscanf(buf, "0x%X 0x%X", &reg, &val);
750 if (res != 2) {
751 err = -EINVAL;
752 goto out;
753 }
754
755 if (reg <= 0x100000 || reg >= 0x280000) {
756 err = -EADDRNOTAVAIL;
757 goto out;
758 }
759
760 if (reg & 3) {
761 err = -EINVAL;
762 goto out;
763 }
764
765 err = carl9170_write_reg(ar, reg, val);
766 if (err)
767 goto out;
768
769 out:
770 return err ? err : count;
771 }
772 DEBUGFS_DECLARE_WO_FILE(hw_iowrite32);
773
774 DEBUGFS_HW_TALLY_FILE(hw_tx_tally, "u");
775 DEBUGFS_HW_TALLY_FILE(hw_rx_tally, "u");
776 DEBUGFS_HW_TALLY_FILE(hw_phy_errors, "u");
777 DEBUGFS_HW_REG_FILE(hw_wlan_queue, ".8x");
778 DEBUGFS_HW_REG_FILE(hw_pta_queue, ".8x");
779 DEBUGFS_HW_REG_FILE(hw_ampdu_info, ".8x");
780 DEBUGFS_QUEUE_DUMP(tx_status, 0);
781 DEBUGFS_QUEUE_DUMP(tx_status, 1);
782 DEBUGFS_QUEUE_DUMP(tx_status, 2);
783 DEBUGFS_QUEUE_DUMP(tx_status, 3);
784 DEBUGFS_QUEUE_DUMP(tx_pending, 0);
785 DEBUGFS_QUEUE_DUMP(tx_pending, 1);
786 DEBUGFS_QUEUE_DUMP(tx_pending, 2);
787 DEBUGFS_QUEUE_DUMP(tx_pending, 3);
788 DEBUGFS_READONLY_FILE(usb_tx_anch_urbs, 20, "%d",
789 atomic_read(&ar->tx_anch_urbs));
790 DEBUGFS_READONLY_FILE(usb_rx_anch_urbs, 20, "%d",
791 atomic_read(&ar->rx_anch_urbs));
792 DEBUGFS_READONLY_FILE(usb_rx_work_urbs, 20, "%d",
793 atomic_read(&ar->rx_work_urbs));
794 DEBUGFS_READONLY_FILE(usb_rx_pool_urbs, 20, "%d",
795 atomic_read(&ar->rx_pool_urbs));
796
797 DEBUGFS_READONLY_FILE(tx_total_queued, 20, "%d",
798 atomic_read(&ar->tx_total_queued));
799 DEBUGFS_READONLY_FILE(tx_ampdu_scheduler, 20, "%d",
800 atomic_read(&ar->tx_ampdu_scheduler));
801
802 DEBUGFS_READONLY_FILE(tx_total_pending, 20, "%d",
803 atomic_read(&ar->tx_total_pending));
804
805 DEBUGFS_READONLY_FILE(tx_ampdu_list_len, 20, "%d",
806 ar->tx_ampdu_list_len);
807
808 DEBUGFS_READONLY_FILE(tx_ampdu_upload, 20, "%d",
809 atomic_read(&ar->tx_ampdu_upload));
810
811 DEBUGFS_READONLY_FILE(tx_janitor_last_run, 64, "last run:%d ms ago",
812 jiffies_to_msecs(jiffies - ar->tx_janitor_last_run));
813
814 DEBUGFS_READONLY_FILE(tx_dropped, 20, "%d", ar->tx_dropped);
815
816 DEBUGFS_READONLY_FILE(rx_dropped, 20, "%d", ar->rx_dropped);
817
818 DEBUGFS_READONLY_FILE(sniffer_enabled, 20, "%d", ar->sniffer_enabled);
819 DEBUGFS_READONLY_FILE(rx_software_decryption, 20, "%d",
820 ar->rx_software_decryption);
821 DEBUGFS_READONLY_FILE(ampdu_factor, 20, "%d",
822 ar->current_factor);
823 DEBUGFS_READONLY_FILE(ampdu_density, 20, "%d",
824 ar->current_density);
825
826 DEBUGFS_READONLY_FILE(beacon_int, 20, "%d TU", ar->global_beacon_int);
827 DEBUGFS_READONLY_FILE(pretbtt, 20, "%d TU", ar->global_pretbtt);
828
829 void carl9170_debugfs_register(struct ar9170 *ar)
830 {
831 ar->debug_dir = debugfs_create_dir(KBUILD_MODNAME,
832 ar->hw->wiphy->debugfsdir);
833
834 #define DEBUGFS_ADD(name) \
835 debugfs_create_file(#name, carl_debugfs_##name ##_ops.attr, \
836 ar->debug_dir, ar, \
837 &carl_debugfs_##name ## _ops.fops);
838
839 DEBUGFS_ADD(usb_tx_anch_urbs);
840 DEBUGFS_ADD(usb_rx_pool_urbs);
841 DEBUGFS_ADD(usb_rx_anch_urbs);
842 DEBUGFS_ADD(usb_rx_work_urbs);
843
844 DEBUGFS_ADD(tx_total_queued);
845 DEBUGFS_ADD(tx_total_pending);
846 DEBUGFS_ADD(tx_dropped);
847 DEBUGFS_ADD(tx_stuck);
848 DEBUGFS_ADD(tx_ampdu_upload);
849 DEBUGFS_ADD(tx_ampdu_scheduler);
850 DEBUGFS_ADD(tx_ampdu_list_len);
851
852 DEBUGFS_ADD(rx_dropped);
853 DEBUGFS_ADD(sniffer_enabled);
854 DEBUGFS_ADD(rx_software_decryption);
855
856 DEBUGFS_ADD(mem_usage);
857 DEBUGFS_ADD(qos_stat);
858 DEBUGFS_ADD(sta_psm);
859 DEBUGFS_ADD(ampdu_state);
860
861 DEBUGFS_ADD(hw_tx_tally);
862 DEBUGFS_ADD(hw_rx_tally);
863 DEBUGFS_ADD(hw_phy_errors);
864 DEBUGFS_ADD(phy_noise);
865
866 DEBUGFS_ADD(hw_wlan_queue);
867 DEBUGFS_ADD(hw_pta_queue);
868 DEBUGFS_ADD(hw_ampdu_info);
869
870 DEBUGFS_ADD(ampdu_density);
871 DEBUGFS_ADD(ampdu_factor);
872
873 DEBUGFS_ADD(tx_janitor_last_run);
874
875 DEBUGFS_ADD(tx_status_0);
876 DEBUGFS_ADD(tx_status_1);
877 DEBUGFS_ADD(tx_status_2);
878 DEBUGFS_ADD(tx_status_3);
879
880 DEBUGFS_ADD(tx_pending_0);
881 DEBUGFS_ADD(tx_pending_1);
882 DEBUGFS_ADD(tx_pending_2);
883 DEBUGFS_ADD(tx_pending_3);
884
885 DEBUGFS_ADD(hw_ioread32);
886 DEBUGFS_ADD(hw_iowrite32);
887 DEBUGFS_ADD(bug);
888
889 DEBUGFS_ADD(erp);
890
891 DEBUGFS_ADD(vif_dump);
892
893 DEBUGFS_ADD(beacon_int);
894 DEBUGFS_ADD(pretbtt);
895
896 #undef DEBUGFS_ADD
897 }
898
899 void carl9170_debugfs_unregister(struct ar9170 *ar)
900 {
901 debugfs_remove_recursive(ar->debug_dir);
902 }