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