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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
51static int carl9170_debugfs_open(struct inode *inode, struct file *file)
52{
53 file->private_data = inode->i_private;
54 return 0;
55}
56
57struct carl9170_debugfs_fops {
58 unsigned int read_bufsize;
59 mode_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
68static 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
112out_free:
113 vfree(res_buf);
114 mutex_unlock(&ar->mutex);
115 return err;
116}
117
118static 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
164out_unlock:
165 mutex_unlock(&ar->mutex);
166
167out_free:
168 vfree(buf);
169 return err;
170}
171
172#define __DEBUGFS_DECLARE_FILE(name, _read, _write, _read_bufsize, \
173 _attr, _dstate) \
174static 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...) \
211static 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} \
218DEBUGFS_DECLARE_RO_FILE(name, _read_bufsize)
219
220static 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}
245DEBUGFS_DECLARE_RO_FILE(mem_usage, 512);
246
247static 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}
289DEBUGFS_DECLARE_RO_FILE(qos_stat, 512);
290
291static 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
308static 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}
366DEBUGFS_DECLARE_RO_FILE(ampdu_state, 8000);
367
368static 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) \
386static 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} \
392DEBUGFS_DECLARE_RO_FILE(q##_##qi, 8000);
393
394static 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}
408DEBUGFS_DECLARE_RO_FILE(sta_psm, 160);
409
410static 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}
426DEBUGFS_DECLARE_RO_FILE(tx_stuck, 180);
427
428static 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}
446DEBUGFS_DECLARE_RO_FILE(phy_noise, 180);
447
448static 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}
477DEBUGFS_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) \
503static 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} \
530DEBUGFS_DECLARE_RO_FILE(name, 0);
531
532#define DEBUGFS_HW_REG_FILE(name, f) \
533static 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} \
558DEBUGFS_DECLARE_RO_FILE(name, 0);
559
560static 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", ®, &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
607out:
608 return err ? err : count;
609}
610
611static 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}
630DEBUGFS_DECLARE_RW_FILE(hw_ioread32, CARL9170_DEBUG_RING_SIZE * 40);
631
632static 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
675out:
676 return count;
677}
678
679static 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
698static 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
707static 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
715static 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
735DEBUGFS_DECLARE_RW_FILE(erp, 80);
736
737static 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", ®, &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
769out:
770 return err ? err : count;
771}
772DEBUGFS_DECLARE_WO_FILE(hw_iowrite32);
773
774DEBUGFS_HW_TALLY_FILE(hw_tx_tally, "u");
775DEBUGFS_HW_TALLY_FILE(hw_rx_tally, "u");
776DEBUGFS_HW_TALLY_FILE(hw_phy_errors, "u");
777DEBUGFS_HW_REG_FILE(hw_wlan_queue, ".8x");
778DEBUGFS_HW_REG_FILE(hw_pta_queue, ".8x");
779DEBUGFS_HW_REG_FILE(hw_ampdu_info, ".8x");
780DEBUGFS_QUEUE_DUMP(tx_status, 0);
781DEBUGFS_QUEUE_DUMP(tx_status, 1);
782DEBUGFS_QUEUE_DUMP(tx_status, 2);
783DEBUGFS_QUEUE_DUMP(tx_status, 3);
784DEBUGFS_QUEUE_DUMP(tx_pending, 0);
785DEBUGFS_QUEUE_DUMP(tx_pending, 1);
786DEBUGFS_QUEUE_DUMP(tx_pending, 2);
787DEBUGFS_QUEUE_DUMP(tx_pending, 3);
788DEBUGFS_READONLY_FILE(usb_tx_anch_urbs, 20, "%d",
789 atomic_read(&ar->tx_anch_urbs));
790DEBUGFS_READONLY_FILE(usb_rx_anch_urbs, 20, "%d",
791 atomic_read(&ar->rx_anch_urbs));
792DEBUGFS_READONLY_FILE(usb_rx_work_urbs, 20, "%d",
793 atomic_read(&ar->rx_work_urbs));
794DEBUGFS_READONLY_FILE(usb_rx_pool_urbs, 20, "%d",
795 atomic_read(&ar->rx_pool_urbs));
796
797DEBUGFS_READONLY_FILE(tx_total_queued, 20, "%d",
798 atomic_read(&ar->tx_total_queued));
799DEBUGFS_READONLY_FILE(tx_ampdu_scheduler, 20, "%d",
800 atomic_read(&ar->tx_ampdu_scheduler));
801
802DEBUGFS_READONLY_FILE(tx_total_pending, 20, "%d",
803 atomic_read(&ar->tx_total_pending));
804
805DEBUGFS_READONLY_FILE(tx_ampdu_list_len, 20, "%d",
806 ar->tx_ampdu_list_len);
807
808DEBUGFS_READONLY_FILE(tx_ampdu_upload, 20, "%d",
809 atomic_read(&ar->tx_ampdu_upload));
810
811DEBUGFS_READONLY_FILE(tx_janitor_last_run, 64, "last run:%d ms ago",
812 jiffies_to_msecs(jiffies - ar->tx_janitor_last_run));
813
814DEBUGFS_READONLY_FILE(tx_dropped, 20, "%d", ar->tx_dropped);
815
816DEBUGFS_READONLY_FILE(rx_dropped, 20, "%d", ar->rx_dropped);
817
818DEBUGFS_READONLY_FILE(sniffer_enabled, 20, "%d", ar->sniffer_enabled);
819DEBUGFS_READONLY_FILE(rx_software_decryption, 20, "%d",
820 ar->rx_software_decryption);
821DEBUGFS_READONLY_FILE(ampdu_factor, 20, "%d",
822 ar->current_factor);
823DEBUGFS_READONLY_FILE(ampdu_density, 20, "%d",
824 ar->current_density);
825
826DEBUGFS_READONLY_FILE(beacon_int, 20, "%d TU", ar->global_beacon_int);
827DEBUGFS_READONLY_FILE(pretbtt, 20, "%d TU", ar->global_pretbtt);
828
829void 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
899void carl9170_debugfs_unregister(struct ar9170 *ar)
900{
901 debugfs_remove_recursive(ar->debug_dir);
902}
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 += scnprintf(&buf[off], max - off, fmt, ##args)
49
50
51struct 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
62static 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(debugfs_real_fops(file),
79 struct carl9170_debugfs_fops, fops);
80
81 if (!dfops->read)
82 return -ENOSYS;
83
84 if (dfops->read_bufsize) {
85 buf = vmalloc(dfops->read_bufsize);
86 if (!buf)
87 return -ENOMEM;
88 }
89
90 mutex_lock(&ar->mutex);
91 if (!CHK_DEV_STATE(ar, dfops->req_dev_state)) {
92 err = -ENODEV;
93 res_buf = buf;
94 goto out_free;
95 }
96
97 res_buf = dfops->read(ar, buf, dfops->read_bufsize, &ret);
98
99 if (ret > 0)
100 err = simple_read_from_buffer(userbuf, count, ppos,
101 res_buf, ret);
102 else
103 err = ret;
104
105 WARN_ON_ONCE(dfops->read_bufsize && (res_buf != buf));
106
107out_free:
108 vfree(res_buf);
109 mutex_unlock(&ar->mutex);
110 return err;
111}
112
113static ssize_t carl9170_debugfs_write(struct file *file,
114 const char __user *userbuf, size_t count, loff_t *ppos)
115{
116 struct carl9170_debugfs_fops *dfops;
117 struct ar9170 *ar;
118 char *buf = NULL;
119 int err = 0;
120
121 if (!count)
122 return 0;
123
124 if (count > PAGE_SIZE)
125 return -E2BIG;
126
127 ar = file->private_data;
128
129 if (!ar)
130 return -ENODEV;
131 dfops = container_of(debugfs_real_fops(file),
132 struct carl9170_debugfs_fops, fops);
133
134 if (!dfops->write)
135 return -ENOSYS;
136
137 buf = vmalloc(count);
138 if (!buf)
139 return -ENOMEM;
140
141 if (copy_from_user(buf, userbuf, count)) {
142 err = -EFAULT;
143 goto out_free;
144 }
145
146 if (mutex_trylock(&ar->mutex) == 0) {
147 err = -EAGAIN;
148 goto out_free;
149 }
150
151 if (!CHK_DEV_STATE(ar, dfops->req_dev_state)) {
152 err = -ENODEV;
153 goto out_unlock;
154 }
155
156 err = dfops->write(ar, buf, count);
157 if (err)
158 goto out_unlock;
159
160out_unlock:
161 mutex_unlock(&ar->mutex);
162
163out_free:
164 vfree(buf);
165 return err;
166}
167
168#define __DEBUGFS_DECLARE_FILE(name, _read, _write, _read_bufsize, \
169 _attr, _dstate) \
170static const struct carl9170_debugfs_fops carl_debugfs_##name ##_ops = {\
171 .read_bufsize = _read_bufsize, \
172 .read = _read, \
173 .write = _write, \
174 .attr = _attr, \
175 .req_dev_state = _dstate, \
176 .fops = { \
177 .open = simple_open, \
178 .read = carl9170_debugfs_read, \
179 .write = carl9170_debugfs_write, \
180 .owner = THIS_MODULE \
181 }, \
182}
183
184#define DEBUGFS_DECLARE_FILE(name, _read, _write, _read_bufsize, _attr) \
185 __DEBUGFS_DECLARE_FILE(name, _read, _write, _read_bufsize, \
186 _attr, CARL9170_STARTED) \
187
188#define DEBUGFS_DECLARE_RO_FILE(name, _read_bufsize) \
189 DEBUGFS_DECLARE_FILE(name, carl9170_debugfs_##name ##_read, \
190 NULL, _read_bufsize, 0400)
191
192#define DEBUGFS_DECLARE_WO_FILE(name) \
193 DEBUGFS_DECLARE_FILE(name, NULL, carl9170_debugfs_##name ##_write,\
194 0, 0200)
195
196#define DEBUGFS_DECLARE_RW_FILE(name, _read_bufsize) \
197 DEBUGFS_DECLARE_FILE(name, carl9170_debugfs_##name ##_read, \
198 carl9170_debugfs_##name ##_write, \
199 _read_bufsize, 0600)
200
201#define __DEBUGFS_DECLARE_RW_FILE(name, _read_bufsize, _dstate) \
202 __DEBUGFS_DECLARE_FILE(name, carl9170_debugfs_##name ##_read, \
203 carl9170_debugfs_##name ##_write, \
204 _read_bufsize, 0600, _dstate)
205
206#define DEBUGFS_READONLY_FILE(name, _read_bufsize, fmt, value...) \
207static char *carl9170_debugfs_ ##name ## _read(struct ar9170 *ar, \
208 char *buf, size_t buf_size,\
209 ssize_t *len) \
210{ \
211 ADD(buf, *len, buf_size, fmt "\n", ##value); \
212 return buf; \
213} \
214DEBUGFS_DECLARE_RO_FILE(name, _read_bufsize)
215
216static char *carl9170_debugfs_mem_usage_read(struct ar9170 *ar, char *buf,
217 size_t bufsize, ssize_t *len)
218{
219 spin_lock_bh(&ar->mem_lock);
220
221 ADD(buf, *len, bufsize, "jar: [%*pb]\n",
222 ar->fw.mem_blocks, ar->mem_bitmap);
223
224 ADD(buf, *len, bufsize, "cookies: used:%3d / total:%3d, allocs:%d\n",
225 bitmap_weight(ar->mem_bitmap, ar->fw.mem_blocks),
226 ar->fw.mem_blocks, atomic_read(&ar->mem_allocs));
227
228 ADD(buf, *len, bufsize, "memory: free:%3d (%3d KiB) / total:%3d KiB)\n",
229 atomic_read(&ar->mem_free_blocks),
230 (atomic_read(&ar->mem_free_blocks) * ar->fw.mem_block_size) / 1024,
231 (ar->fw.mem_blocks * ar->fw.mem_block_size) / 1024);
232
233 spin_unlock_bh(&ar->mem_lock);
234
235 return buf;
236}
237DEBUGFS_DECLARE_RO_FILE(mem_usage, 512);
238
239static char *carl9170_debugfs_qos_stat_read(struct ar9170 *ar, char *buf,
240 size_t bufsize, ssize_t *len)
241{
242 ADD(buf, *len, bufsize, "%s QoS AC\n", modparam_noht ? "Hardware" :
243 "Software");
244
245 ADD(buf, *len, bufsize, "[ VO VI "
246 " BE BK ]\n");
247
248 spin_lock_bh(&ar->tx_stats_lock);
249 ADD(buf, *len, bufsize, "[length/limit length/limit "
250 "length/limit length/limit ]\n"
251 "[ %3d/%3d %3d/%3d "
252 " %3d/%3d %3d/%3d ]\n\n",
253 ar->tx_stats[0].len, ar->tx_stats[0].limit,
254 ar->tx_stats[1].len, ar->tx_stats[1].limit,
255 ar->tx_stats[2].len, ar->tx_stats[2].limit,
256 ar->tx_stats[3].len, ar->tx_stats[3].limit);
257
258 ADD(buf, *len, bufsize, "[ total total "
259 " total total ]\n"
260 "[%10d %10d %10d %10d ]\n\n",
261 ar->tx_stats[0].count, ar->tx_stats[1].count,
262 ar->tx_stats[2].count, ar->tx_stats[3].count);
263
264 spin_unlock_bh(&ar->tx_stats_lock);
265
266 ADD(buf, *len, bufsize, "[ pend/waittx pend/waittx "
267 " pend/waittx pend/waittx]\n"
268 "[ %3d/%3d %3d/%3d "
269 " %3d/%3d %3d/%3d ]\n\n",
270 skb_queue_len(&ar->tx_pending[0]),
271 skb_queue_len(&ar->tx_status[0]),
272 skb_queue_len(&ar->tx_pending[1]),
273 skb_queue_len(&ar->tx_status[1]),
274 skb_queue_len(&ar->tx_pending[2]),
275 skb_queue_len(&ar->tx_status[2]),
276 skb_queue_len(&ar->tx_pending[3]),
277 skb_queue_len(&ar->tx_status[3]));
278
279 return buf;
280}
281DEBUGFS_DECLARE_RO_FILE(qos_stat, 512);
282
283static void carl9170_debugfs_format_frame(struct ar9170 *ar,
284 struct sk_buff *skb, const char *prefix, char *buf,
285 ssize_t *off, ssize_t bufsize)
286{
287 struct _carl9170_tx_superframe *txc = (void *) skb->data;
288 struct ieee80211_tx_info *txinfo = IEEE80211_SKB_CB(skb);
289 struct carl9170_tx_info *arinfo = (void *) txinfo->rate_driver_data;
290 struct ieee80211_hdr *hdr = (void *) txc->frame_data;
291
292 ADD(buf, *off, bufsize, "%s %p, c:%2x, DA:%pM, sq:%4d, mc:%.4x, "
293 "pc:%.8x, to:%d ms\n", prefix, skb, txc->s.cookie,
294 ieee80211_get_DA(hdr), get_seq_h(hdr),
295 le16_to_cpu(txc->f.mac_control), le32_to_cpu(txc->f.phy_control),
296 jiffies_to_msecs(jiffies - arinfo->timeout));
297}
298
299
300static char *carl9170_debugfs_ampdu_state_read(struct ar9170 *ar, char *buf,
301 size_t bufsize, ssize_t *len)
302{
303 struct carl9170_sta_tid *iter;
304 struct sk_buff *skb;
305 int cnt = 0, fc;
306 int offset;
307
308 rcu_read_lock();
309 list_for_each_entry_rcu(iter, &ar->tx_ampdu_list, list) {
310
311 spin_lock_bh(&iter->lock);
312 ADD(buf, *len, bufsize, "Entry: #%2d TID:%1d, BSN:%4d, "
313 "SNX:%4d, HSN:%4d, BAW:%2d, state:%1d, toggles:%d\n",
314 cnt, iter->tid, iter->bsn, iter->snx, iter->hsn,
315 iter->max, iter->state, iter->counter);
316
317 ADD(buf, *len, bufsize, "\tWindow: [%*pb,W]\n",
318 CARL9170_BAW_BITS, iter->bitmap);
319
320#define BM_STR_OFF(offset) \
321 ((CARL9170_BAW_BITS - (offset) - 1) / 4 + \
322 (CARL9170_BAW_BITS - (offset) - 1) / 32 + 1)
323
324 offset = BM_STR_OFF(0);
325 ADD(buf, *len, bufsize, "\tBase Seq: %*s\n", offset, "T");
326
327 offset = BM_STR_OFF(SEQ_DIFF(iter->snx, iter->bsn));
328 ADD(buf, *len, bufsize, "\tNext Seq: %*s\n", offset, "W");
329
330 offset = BM_STR_OFF(((int)iter->hsn - (int)iter->bsn) %
331 CARL9170_BAW_BITS);
332 ADD(buf, *len, bufsize, "\tLast Seq: %*s\n", offset, "N");
333
334 ADD(buf, *len, bufsize, "\tPre-Aggregation reorder buffer: "
335 " currently queued:%d\n", skb_queue_len(&iter->queue));
336
337 fc = 0;
338 skb_queue_walk(&iter->queue, skb) {
339 char prefix[32];
340
341 snprintf(prefix, sizeof(prefix), "\t\t%3d :", fc);
342 carl9170_debugfs_format_frame(ar, skb, prefix, buf,
343 len, bufsize);
344
345 fc++;
346 }
347 spin_unlock_bh(&iter->lock);
348 cnt++;
349 }
350 rcu_read_unlock();
351
352 return buf;
353}
354DEBUGFS_DECLARE_RO_FILE(ampdu_state, 8000);
355
356static void carl9170_debugfs_queue_dump(struct ar9170 *ar, char *buf,
357 ssize_t *len, size_t bufsize, struct sk_buff_head *queue)
358{
359 struct sk_buff *skb;
360 char prefix[16];
361 int fc = 0;
362
363 spin_lock_bh(&queue->lock);
364 skb_queue_walk(queue, skb) {
365 snprintf(prefix, sizeof(prefix), "%3d :", fc);
366 carl9170_debugfs_format_frame(ar, skb, prefix, buf,
367 len, bufsize);
368 fc++;
369 }
370 spin_unlock_bh(&queue->lock);
371}
372
373#define DEBUGFS_QUEUE_DUMP(q, qi) \
374static char *carl9170_debugfs_##q ##_##qi ##_read(struct ar9170 *ar, \
375 char *buf, size_t bufsize, ssize_t *len) \
376{ \
377 carl9170_debugfs_queue_dump(ar, buf, len, bufsize, &ar->q[qi]); \
378 return buf; \
379} \
380DEBUGFS_DECLARE_RO_FILE(q##_##qi, 8000);
381
382static char *carl9170_debugfs_sta_psm_read(struct ar9170 *ar, char *buf,
383 size_t bufsize, ssize_t *len)
384{
385 ADD(buf, *len, bufsize, "psm state: %s\n", (ar->ps.off_override ?
386 "FORCE CAM" : (ar->ps.state ? "PSM" : "CAM")));
387
388 ADD(buf, *len, bufsize, "sleep duration: %d ms.\n", ar->ps.sleep_ms);
389 ADD(buf, *len, bufsize, "last power-state transition: %d ms ago.\n",
390 jiffies_to_msecs(jiffies - ar->ps.last_action));
391 ADD(buf, *len, bufsize, "last CAM->PSM transition: %d ms ago.\n",
392 jiffies_to_msecs(jiffies - ar->ps.last_slept));
393
394 return buf;
395}
396DEBUGFS_DECLARE_RO_FILE(sta_psm, 160);
397
398static char *carl9170_debugfs_tx_stuck_read(struct ar9170 *ar, char *buf,
399 size_t bufsize, ssize_t *len)
400{
401 int i;
402
403 for (i = 0; i < ar->hw->queues; i++) {
404 ADD(buf, *len, bufsize, "TX queue [%d]: %10d max:%10d ms.\n",
405 i, ieee80211_queue_stopped(ar->hw, i) ?
406 jiffies_to_msecs(jiffies - ar->queue_stop_timeout[i]) : 0,
407 jiffies_to_msecs(ar->max_queue_stop_timeout[i]));
408
409 ar->max_queue_stop_timeout[i] = 0;
410 }
411
412 return buf;
413}
414DEBUGFS_DECLARE_RO_FILE(tx_stuck, 180);
415
416static char *carl9170_debugfs_phy_noise_read(struct ar9170 *ar, char *buf,
417 size_t bufsize, ssize_t *len)
418{
419 int err;
420
421 err = carl9170_get_noisefloor(ar);
422 if (err) {
423 *len = err;
424 return buf;
425 }
426
427 ADD(buf, *len, bufsize, "Chain 0: %10d dBm, ext. chan.:%10d dBm\n",
428 ar->noise[0], ar->noise[2]);
429 ADD(buf, *len, bufsize, "Chain 2: %10d dBm, ext. chan.:%10d dBm\n",
430 ar->noise[1], ar->noise[3]);
431
432 return buf;
433}
434DEBUGFS_DECLARE_RO_FILE(phy_noise, 180);
435
436static char *carl9170_debugfs_vif_dump_read(struct ar9170 *ar, char *buf,
437 size_t bufsize, ssize_t *len)
438{
439 struct carl9170_vif_info *iter;
440 int i = 0;
441
442 ADD(buf, *len, bufsize, "registered VIFs:%d \\ %d\n",
443 ar->vifs, ar->fw.vif_num);
444
445 ADD(buf, *len, bufsize, "VIF bitmap: [%*pb]\n",
446 ar->fw.vif_num, &ar->vif_bitmap);
447
448 rcu_read_lock();
449 list_for_each_entry_rcu(iter, &ar->vif_list, list) {
450 struct ieee80211_vif *vif = carl9170_get_vif(iter);
451 ADD(buf, *len, bufsize, "\t%d = [%s VIF, id:%d, type:%x "
452 " mac:%pM %s]\n", i, (carl9170_get_main_vif(ar) == vif ?
453 "Master" : " Slave"), iter->id, vif->type, vif->addr,
454 iter->enable_beacon ? "beaconing " : "");
455 i++;
456 }
457 rcu_read_unlock();
458
459 return buf;
460}
461DEBUGFS_DECLARE_RO_FILE(vif_dump, 8000);
462
463#define UPDATE_COUNTER(ar, name) ({ \
464 u32 __tmp[ARRAY_SIZE(name##_regs)]; \
465 unsigned int __i, __err = -ENODEV; \
466 \
467 for (__i = 0; __i < ARRAY_SIZE(name##_regs); __i++) { \
468 __tmp[__i] = name##_regs[__i].reg; \
469 ar->debug.stats.name##_counter[__i] = 0; \
470 } \
471 \
472 if (IS_STARTED(ar)) \
473 __err = carl9170_read_mreg(ar, ARRAY_SIZE(name##_regs), \
474 __tmp, ar->debug.stats.name##_counter); \
475 (__err); })
476
477#define TALLY_SUM_UP(ar, name) do { \
478 unsigned int __i; \
479 \
480 for (__i = 0; __i < ARRAY_SIZE(name##_regs); __i++) { \
481 ar->debug.stats.name##_sum[__i] += \
482 ar->debug.stats.name##_counter[__i]; \
483 } \
484} while (0)
485
486#define DEBUGFS_HW_TALLY_FILE(name, f) \
487static char *carl9170_debugfs_##name ## _read(struct ar9170 *ar, \
488 char *dum, size_t bufsize, ssize_t *ret) \
489{ \
490 char *buf; \
491 int i, max_len, err; \
492 \
493 max_len = ARRAY_SIZE(name##_regs) * 80; \
494 buf = vmalloc(max_len); \
495 if (!buf) \
496 return NULL; \
497 \
498 err = UPDATE_COUNTER(ar, name); \
499 if (err) { \
500 *ret = err; \
501 return buf; \
502 } \
503 \
504 TALLY_SUM_UP(ar, name); \
505 \
506 for (i = 0; i < ARRAY_SIZE(name##_regs); i++) { \
507 ADD(buf, *ret, max_len, "%22s = %" f "[+%" f "]\n", \
508 name##_regs[i].nreg, ar->debug.stats.name ##_sum[i],\
509 ar->debug.stats.name ##_counter[i]); \
510 } \
511 \
512 return buf; \
513} \
514DEBUGFS_DECLARE_RO_FILE(name, 0);
515
516#define DEBUGFS_HW_REG_FILE(name, f) \
517static char *carl9170_debugfs_##name ## _read(struct ar9170 *ar, \
518 char *dum, size_t bufsize, ssize_t *ret) \
519{ \
520 char *buf; \
521 int i, max_len, err; \
522 \
523 max_len = ARRAY_SIZE(name##_regs) * 80; \
524 buf = vmalloc(max_len); \
525 if (!buf) \
526 return NULL; \
527 \
528 err = UPDATE_COUNTER(ar, name); \
529 if (err) { \
530 *ret = err; \
531 return buf; \
532 } \
533 \
534 for (i = 0; i < ARRAY_SIZE(name##_regs); i++) { \
535 ADD(buf, *ret, max_len, "%22s = %" f "\n", \
536 name##_regs[i].nreg, \
537 ar->debug.stats.name##_counter[i]); \
538 } \
539 \
540 return buf; \
541} \
542DEBUGFS_DECLARE_RO_FILE(name, 0);
543
544static ssize_t carl9170_debugfs_hw_ioread32_write(struct ar9170 *ar,
545 const char *buf, size_t count)
546{
547 int err = 0, i, n = 0, max_len = 32, res;
548 unsigned int reg, tmp;
549
550 if (!count)
551 return 0;
552
553 if (count > max_len)
554 return -E2BIG;
555
556 res = sscanf(buf, "0x%X %d", ®, &n);
557 if (res < 1) {
558 err = -EINVAL;
559 goto out;
560 }
561
562 if (res == 1)
563 n = 1;
564
565 if (n > 15) {
566 err = -EMSGSIZE;
567 goto out;
568 }
569
570 if ((reg >= 0x280000) || ((reg + (n << 2)) >= 0x280000)) {
571 err = -EADDRNOTAVAIL;
572 goto out;
573 }
574
575 if (reg & 3) {
576 err = -EINVAL;
577 goto out;
578 }
579
580 for (i = 0; i < n; i++) {
581 err = carl9170_read_reg(ar, reg + (i << 2), &tmp);
582 if (err)
583 goto out;
584
585 ar->debug.ring[ar->debug.ring_tail].reg = reg + (i << 2);
586 ar->debug.ring[ar->debug.ring_tail].value = tmp;
587 ar->debug.ring_tail++;
588 ar->debug.ring_tail %= CARL9170_DEBUG_RING_SIZE;
589 }
590
591out:
592 return err ? err : count;
593}
594
595static char *carl9170_debugfs_hw_ioread32_read(struct ar9170 *ar, char *buf,
596 size_t bufsize, ssize_t *ret)
597{
598 int i = 0;
599
600 while (ar->debug.ring_head != ar->debug.ring_tail) {
601 ADD(buf, *ret, bufsize, "%.8x = %.8x\n",
602 ar->debug.ring[ar->debug.ring_head].reg,
603 ar->debug.ring[ar->debug.ring_head].value);
604
605 ar->debug.ring_head++;
606 ar->debug.ring_head %= CARL9170_DEBUG_RING_SIZE;
607
608 if (i++ == 64)
609 break;
610 }
611 ar->debug.ring_head = ar->debug.ring_tail;
612 return buf;
613}
614DEBUGFS_DECLARE_RW_FILE(hw_ioread32, CARL9170_DEBUG_RING_SIZE * 40);
615
616static ssize_t carl9170_debugfs_bug_write(struct ar9170 *ar, const char *buf,
617 size_t count)
618{
619 int err;
620
621 if (count < 1)
622 return -EINVAL;
623
624 switch (buf[0]) {
625 case 'F':
626 ar->needs_full_reset = true;
627 break;
628
629 case 'R':
630 if (!IS_STARTED(ar)) {
631 err = -EAGAIN;
632 goto out;
633 }
634
635 ar->needs_full_reset = false;
636 break;
637
638 case 'M':
639 err = carl9170_mac_reset(ar);
640 if (err < 0)
641 count = err;
642
643 goto out;
644
645 case 'P':
646 err = carl9170_set_channel(ar, ar->hw->conf.chandef.chan,
647 cfg80211_get_chandef_type(&ar->hw->conf.chandef));
648 if (err < 0)
649 count = err;
650
651 goto out;
652
653 default:
654 return -EINVAL;
655 }
656
657 carl9170_restart(ar, CARL9170_RR_USER_REQUEST);
658
659out:
660 return count;
661}
662
663static char *carl9170_debugfs_bug_read(struct ar9170 *ar, char *buf,
664 size_t bufsize, ssize_t *ret)
665{
666 ADD(buf, *ret, bufsize, "[P]hy reinit, [R]estart, [F]ull usb reset, "
667 "[M]ac reset\n");
668 ADD(buf, *ret, bufsize, "firmware restarts:%d, last reason:%d\n",
669 ar->restart_counter, ar->last_reason);
670 ADD(buf, *ret, bufsize, "phy reinit errors:%d (%d)\n",
671 ar->total_chan_fail, ar->chan_fail);
672 ADD(buf, *ret, bufsize, "reported firmware errors:%d\n",
673 ar->fw.err_counter);
674 ADD(buf, *ret, bufsize, "reported firmware BUGs:%d\n",
675 ar->fw.bug_counter);
676 ADD(buf, *ret, bufsize, "pending restart requests:%d\n",
677 atomic_read(&ar->pending_restarts));
678 return buf;
679}
680__DEBUGFS_DECLARE_RW_FILE(bug, 400, CARL9170_STOPPED);
681
682static const char *const erp_modes[] = {
683 [CARL9170_ERP_INVALID] = "INVALID",
684 [CARL9170_ERP_AUTO] = "Automatic",
685 [CARL9170_ERP_MAC80211] = "Set by MAC80211",
686 [CARL9170_ERP_OFF] = "Force Off",
687 [CARL9170_ERP_RTS] = "Force RTS",
688 [CARL9170_ERP_CTS] = "Force CTS"
689};
690
691static char *carl9170_debugfs_erp_read(struct ar9170 *ar, char *buf,
692 size_t bufsize, ssize_t *ret)
693{
694 ADD(buf, *ret, bufsize, "ERP Setting: (%d) -> %s\n", ar->erp_mode,
695 erp_modes[ar->erp_mode]);
696 return buf;
697}
698
699static ssize_t carl9170_debugfs_erp_write(struct ar9170 *ar, const char *buf,
700 size_t count)
701{
702 int res, val;
703
704 if (count < 1)
705 return -EINVAL;
706
707 res = sscanf(buf, "%d", &val);
708 if (res != 1)
709 return -EINVAL;
710
711 if (!((val > CARL9170_ERP_INVALID) &&
712 (val < __CARL9170_ERP_NUM)))
713 return -EINVAL;
714
715 ar->erp_mode = val;
716 return count;
717}
718
719DEBUGFS_DECLARE_RW_FILE(erp, 80);
720
721static ssize_t carl9170_debugfs_hw_iowrite32_write(struct ar9170 *ar,
722 const char *buf, size_t count)
723{
724 int err = 0, max_len = 22, res;
725 u32 reg, val;
726
727 if (!count)
728 return 0;
729
730 if (count > max_len)
731 return -E2BIG;
732
733 res = sscanf(buf, "0x%X 0x%X", ®, &val);
734 if (res != 2) {
735 err = -EINVAL;
736 goto out;
737 }
738
739 if (reg <= 0x100000 || reg >= 0x280000) {
740 err = -EADDRNOTAVAIL;
741 goto out;
742 }
743
744 if (reg & 3) {
745 err = -EINVAL;
746 goto out;
747 }
748
749 err = carl9170_write_reg(ar, reg, val);
750 if (err)
751 goto out;
752
753out:
754 return err ? err : count;
755}
756DEBUGFS_DECLARE_WO_FILE(hw_iowrite32);
757
758DEBUGFS_HW_TALLY_FILE(hw_tx_tally, "u");
759DEBUGFS_HW_TALLY_FILE(hw_rx_tally, "u");
760DEBUGFS_HW_TALLY_FILE(hw_phy_errors, "u");
761DEBUGFS_HW_REG_FILE(hw_wlan_queue, ".8x");
762DEBUGFS_HW_REG_FILE(hw_pta_queue, ".8x");
763DEBUGFS_HW_REG_FILE(hw_ampdu_info, ".8x");
764DEBUGFS_QUEUE_DUMP(tx_status, 0);
765DEBUGFS_QUEUE_DUMP(tx_status, 1);
766DEBUGFS_QUEUE_DUMP(tx_status, 2);
767DEBUGFS_QUEUE_DUMP(tx_status, 3);
768DEBUGFS_QUEUE_DUMP(tx_pending, 0);
769DEBUGFS_QUEUE_DUMP(tx_pending, 1);
770DEBUGFS_QUEUE_DUMP(tx_pending, 2);
771DEBUGFS_QUEUE_DUMP(tx_pending, 3);
772DEBUGFS_READONLY_FILE(usb_tx_anch_urbs, 20, "%d",
773 atomic_read(&ar->tx_anch_urbs));
774DEBUGFS_READONLY_FILE(usb_rx_anch_urbs, 20, "%d",
775 atomic_read(&ar->rx_anch_urbs));
776DEBUGFS_READONLY_FILE(usb_rx_work_urbs, 20, "%d",
777 atomic_read(&ar->rx_work_urbs));
778DEBUGFS_READONLY_FILE(usb_rx_pool_urbs, 20, "%d",
779 atomic_read(&ar->rx_pool_urbs));
780
781DEBUGFS_READONLY_FILE(tx_total_queued, 20, "%d",
782 atomic_read(&ar->tx_total_queued));
783DEBUGFS_READONLY_FILE(tx_ampdu_scheduler, 20, "%d",
784 atomic_read(&ar->tx_ampdu_scheduler));
785
786DEBUGFS_READONLY_FILE(tx_total_pending, 20, "%d",
787 atomic_read(&ar->tx_total_pending));
788
789DEBUGFS_READONLY_FILE(tx_ampdu_list_len, 20, "%d",
790 ar->tx_ampdu_list_len);
791
792DEBUGFS_READONLY_FILE(tx_ampdu_upload, 20, "%d",
793 atomic_read(&ar->tx_ampdu_upload));
794
795DEBUGFS_READONLY_FILE(tx_janitor_last_run, 64, "last run:%d ms ago",
796 jiffies_to_msecs(jiffies - ar->tx_janitor_last_run));
797
798DEBUGFS_READONLY_FILE(tx_dropped, 20, "%d", ar->tx_dropped);
799
800DEBUGFS_READONLY_FILE(rx_dropped, 20, "%d", ar->rx_dropped);
801
802DEBUGFS_READONLY_FILE(sniffer_enabled, 20, "%d", ar->sniffer_enabled);
803DEBUGFS_READONLY_FILE(rx_software_decryption, 20, "%d",
804 ar->rx_software_decryption);
805DEBUGFS_READONLY_FILE(ampdu_factor, 20, "%d",
806 ar->current_factor);
807DEBUGFS_READONLY_FILE(ampdu_density, 20, "%d",
808 ar->current_density);
809
810DEBUGFS_READONLY_FILE(beacon_int, 20, "%d TU", ar->global_beacon_int);
811DEBUGFS_READONLY_FILE(pretbtt, 20, "%d TU", ar->global_pretbtt);
812
813void carl9170_debugfs_register(struct ar9170 *ar)
814{
815 ar->debug_dir = debugfs_create_dir(KBUILD_MODNAME,
816 ar->hw->wiphy->debugfsdir);
817
818#define DEBUGFS_ADD(name) \
819 debugfs_create_file(#name, carl_debugfs_##name ##_ops.attr, \
820 ar->debug_dir, ar, \
821 &carl_debugfs_##name ## _ops.fops)
822
823 DEBUGFS_ADD(usb_tx_anch_urbs);
824 DEBUGFS_ADD(usb_rx_pool_urbs);
825 DEBUGFS_ADD(usb_rx_anch_urbs);
826 DEBUGFS_ADD(usb_rx_work_urbs);
827
828 DEBUGFS_ADD(tx_total_queued);
829 DEBUGFS_ADD(tx_total_pending);
830 DEBUGFS_ADD(tx_dropped);
831 DEBUGFS_ADD(tx_stuck);
832 DEBUGFS_ADD(tx_ampdu_upload);
833 DEBUGFS_ADD(tx_ampdu_scheduler);
834 DEBUGFS_ADD(tx_ampdu_list_len);
835
836 DEBUGFS_ADD(rx_dropped);
837 DEBUGFS_ADD(sniffer_enabled);
838 DEBUGFS_ADD(rx_software_decryption);
839
840 DEBUGFS_ADD(mem_usage);
841 DEBUGFS_ADD(qos_stat);
842 DEBUGFS_ADD(sta_psm);
843 DEBUGFS_ADD(ampdu_state);
844
845 DEBUGFS_ADD(hw_tx_tally);
846 DEBUGFS_ADD(hw_rx_tally);
847 DEBUGFS_ADD(hw_phy_errors);
848 DEBUGFS_ADD(phy_noise);
849
850 DEBUGFS_ADD(hw_wlan_queue);
851 DEBUGFS_ADD(hw_pta_queue);
852 DEBUGFS_ADD(hw_ampdu_info);
853
854 DEBUGFS_ADD(ampdu_density);
855 DEBUGFS_ADD(ampdu_factor);
856
857 DEBUGFS_ADD(tx_janitor_last_run);
858
859 DEBUGFS_ADD(tx_status_0);
860 DEBUGFS_ADD(tx_status_1);
861 DEBUGFS_ADD(tx_status_2);
862 DEBUGFS_ADD(tx_status_3);
863
864 DEBUGFS_ADD(tx_pending_0);
865 DEBUGFS_ADD(tx_pending_1);
866 DEBUGFS_ADD(tx_pending_2);
867 DEBUGFS_ADD(tx_pending_3);
868
869 DEBUGFS_ADD(hw_ioread32);
870 DEBUGFS_ADD(hw_iowrite32);
871 DEBUGFS_ADD(bug);
872
873 DEBUGFS_ADD(erp);
874
875 DEBUGFS_ADD(vif_dump);
876
877 DEBUGFS_ADD(beacon_int);
878 DEBUGFS_ADD(pretbtt);
879
880#undef DEBUGFS_ADD
881}
882
883void carl9170_debugfs_unregister(struct ar9170 *ar)
884{
885 debugfs_remove_recursive(ar->debug_dir);
886}