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mm-only debug patch...
[mmotm.git] / drivers / net / wireless / ath / ath9k / debug.c
blob84f44269de470c19d52c106ab5994ebfcbfed65f
1 /*
2 * Copyright (c) 2008-2009 Atheros Communications Inc.
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17 #include <asm/unaligned.h>
18
19 #include "ath9k.h"
20
21 #define REG_WRITE_D(_ah, _reg, _val) \
22 ath9k_hw_common(_ah)->ops->write((_ah), (_val), (_reg))
23 #define REG_READ_D(_ah, _reg) \
24 ath9k_hw_common(_ah)->ops->read((_ah), (_reg))
25
26 static struct dentry *ath9k_debugfs_root;
27
28 static int ath9k_debugfs_open(struct inode *inode, struct file *file)
29 {
30 file->private_data = inode->i_private;
31 return 0;
32 }
33
34 static ssize_t read_file_debug(struct file *file, char __user *user_buf,
35 size_t count, loff_t *ppos)
36 {
37 struct ath_softc *sc = file->private_data;
38 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
39 char buf[32];
40 unsigned int len;
41
42 len = snprintf(buf, sizeof(buf), "0x%08x\n", common->debug_mask);
43 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
44 }
45
46 static ssize_t write_file_debug(struct file *file, const char __user *user_buf,
47 size_t count, loff_t *ppos)
48 {
49 struct ath_softc *sc = file->private_data;
50 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
51 unsigned long mask;
52 char buf[32];
53 ssize_t len;
54
55 len = min(count, sizeof(buf) - 1);
56 if (copy_from_user(buf, user_buf, len))
57 return -EINVAL;
58
59 buf[len] = '\0';
60 if (strict_strtoul(buf, 0, &mask))
61 return -EINVAL;
62
63 common->debug_mask = mask;
64 return count;
65 }
66
67 static const struct file_operations fops_debug = {
68 .read = read_file_debug,
69 .write = write_file_debug,
70 .open = ath9k_debugfs_open,
71 .owner = THIS_MODULE
72 };
73
74 static ssize_t read_file_dma(struct file *file, char __user *user_buf,
75 size_t count, loff_t *ppos)
76 {
77 struct ath_softc *sc = file->private_data;
78 struct ath_hw *ah = sc->sc_ah;
79 char buf[1024];
80 unsigned int len = 0;
81 u32 val[ATH9K_NUM_DMA_DEBUG_REGS];
82 int i, qcuOffset = 0, dcuOffset = 0;
83 u32 *qcuBase = &val[0], *dcuBase = &val[4];
84
85 ath9k_ps_wakeup(sc);
86
87 REG_WRITE_D(ah, AR_MACMISC,
88 ((AR_MACMISC_DMA_OBS_LINE_8 << AR_MACMISC_DMA_OBS_S) |
89 (AR_MACMISC_MISC_OBS_BUS_1 <<
90 AR_MACMISC_MISC_OBS_BUS_MSB_S)));
91
92 len += snprintf(buf + len, sizeof(buf) - len,
93 "Raw DMA Debug values:\n");
94
95 for (i = 0; i < ATH9K_NUM_DMA_DEBUG_REGS; i++) {
96 if (i % 4 == 0)
97 len += snprintf(buf + len, sizeof(buf) - len, "\n");
98
99 val[i] = REG_READ_D(ah, AR_DMADBG_0 + (i * sizeof(u32)));
100 len += snprintf(buf + len, sizeof(buf) - len, "%d: %08x ",
101 i, val[i]);
102 }
103
104 len += snprintf(buf + len, sizeof(buf) - len, "\n\n");
105 len += snprintf(buf + len, sizeof(buf) - len,
106 "Num QCU: chain_st fsp_ok fsp_st DCU: chain_st\n");
107
108 for (i = 0; i < ATH9K_NUM_QUEUES; i++, qcuOffset += 4, dcuOffset += 5) {
109 if (i == 8) {
110 qcuOffset = 0;
111 qcuBase++;
112 }
113
114 if (i == 6) {
115 dcuOffset = 0;
116 dcuBase++;
117 }
118
119 len += snprintf(buf + len, sizeof(buf) - len,
120 "%2d %2x %1x %2x %2x\n",
121 i, (*qcuBase & (0x7 << qcuOffset)) >> qcuOffset,
122 (*qcuBase & (0x8 << qcuOffset)) >> (qcuOffset + 3),
123 val[2] & (0x7 << (i * 3)) >> (i * 3),
124 (*dcuBase & (0x1f << dcuOffset)) >> dcuOffset);
125 }
126
127 len += snprintf(buf + len, sizeof(buf) - len, "\n");
128
129 len += snprintf(buf + len, sizeof(buf) - len,
130 "qcu_stitch state: %2x qcu_fetch state: %2x\n",
131 (val[3] & 0x003c0000) >> 18, (val[3] & 0x03c00000) >> 22);
132 len += snprintf(buf + len, sizeof(buf) - len,
133 "qcu_complete state: %2x dcu_complete state: %2x\n",
134 (val[3] & 0x1c000000) >> 26, (val[6] & 0x3));
135 len += snprintf(buf + len, sizeof(buf) - len,
136 "dcu_arb state: %2x dcu_fp state: %2x\n",
137 (val[5] & 0x06000000) >> 25, (val[5] & 0x38000000) >> 27);
138 len += snprintf(buf + len, sizeof(buf) - len,
139 "chan_idle_dur: %3d chan_idle_dur_valid: %1d\n",
140 (val[6] & 0x000003fc) >> 2, (val[6] & 0x00000400) >> 10);
141 len += snprintf(buf + len, sizeof(buf) - len,
142 "txfifo_valid_0: %1d txfifo_valid_1: %1d\n",
143 (val[6] & 0x00000800) >> 11, (val[6] & 0x00001000) >> 12);
144 len += snprintf(buf + len, sizeof(buf) - len,
145 "txfifo_dcu_num_0: %2d txfifo_dcu_num_1: %2d\n",
146 (val[6] & 0x0001e000) >> 13, (val[6] & 0x001e0000) >> 17);
147
148 len += snprintf(buf + len, sizeof(buf) - len, "pcu observe: 0x%x \n",
149 REG_READ_D(ah, AR_OBS_BUS_1));
150 len += snprintf(buf + len, sizeof(buf) - len,
151 "AR_CR: 0x%x \n", REG_READ_D(ah, AR_CR));
152
153 ath9k_ps_restore(sc);
154
155 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
156 }
157
158 static const struct file_operations fops_dma = {
159 .read = read_file_dma,
160 .open = ath9k_debugfs_open,
161 .owner = THIS_MODULE
162 };
163
164
165 void ath_debug_stat_interrupt(struct ath_softc *sc, enum ath9k_int status)
166 {
167 if (status)
168 sc->debug.stats.istats.total++;
169 if (status & ATH9K_INT_RX)
170 sc->debug.stats.istats.rxok++;
171 if (status & ATH9K_INT_RXEOL)
172 sc->debug.stats.istats.rxeol++;
173 if (status & ATH9K_INT_RXORN)
174 sc->debug.stats.istats.rxorn++;
175 if (status & ATH9K_INT_TX)
176 sc->debug.stats.istats.txok++;
177 if (status & ATH9K_INT_TXURN)
178 sc->debug.stats.istats.txurn++;
179 if (status & ATH9K_INT_MIB)
180 sc->debug.stats.istats.mib++;
181 if (status & ATH9K_INT_RXPHY)
182 sc->debug.stats.istats.rxphyerr++;
183 if (status & ATH9K_INT_RXKCM)
184 sc->debug.stats.istats.rx_keycache_miss++;
185 if (status & ATH9K_INT_SWBA)
186 sc->debug.stats.istats.swba++;
187 if (status & ATH9K_INT_BMISS)
188 sc->debug.stats.istats.bmiss++;
189 if (status & ATH9K_INT_BNR)
190 sc->debug.stats.istats.bnr++;
191 if (status & ATH9K_INT_CST)
192 sc->debug.stats.istats.cst++;
193 if (status & ATH9K_INT_GTT)
194 sc->debug.stats.istats.gtt++;
195 if (status & ATH9K_INT_TIM)
196 sc->debug.stats.istats.tim++;
197 if (status & ATH9K_INT_CABEND)
198 sc->debug.stats.istats.cabend++;
199 if (status & ATH9K_INT_DTIMSYNC)
200 sc->debug.stats.istats.dtimsync++;
201 if (status & ATH9K_INT_DTIM)
202 sc->debug.stats.istats.dtim++;
203 }
204
205 static ssize_t read_file_interrupt(struct file *file, char __user *user_buf,
206 size_t count, loff_t *ppos)
207 {
208 struct ath_softc *sc = file->private_data;
209 char buf[512];
210 unsigned int len = 0;
211
212 len += snprintf(buf + len, sizeof(buf) - len,
213 "%8s: %10u\n", "RX", sc->debug.stats.istats.rxok);
214 len += snprintf(buf + len, sizeof(buf) - len,
215 "%8s: %10u\n", "RXEOL", sc->debug.stats.istats.rxeol);
216 len += snprintf(buf + len, sizeof(buf) - len,
217 "%8s: %10u\n", "RXORN", sc->debug.stats.istats.rxorn);
218 len += snprintf(buf + len, sizeof(buf) - len,
219 "%8s: %10u\n", "TX", sc->debug.stats.istats.txok);
220 len += snprintf(buf + len, sizeof(buf) - len,
221 "%8s: %10u\n", "TXURN", sc->debug.stats.istats.txurn);
222 len += snprintf(buf + len, sizeof(buf) - len,
223 "%8s: %10u\n", "MIB", sc->debug.stats.istats.mib);
224 len += snprintf(buf + len, sizeof(buf) - len,
225 "%8s: %10u\n", "RXPHY", sc->debug.stats.istats.rxphyerr);
226 len += snprintf(buf + len, sizeof(buf) - len,
227 "%8s: %10u\n", "RXKCM", sc->debug.stats.istats.rx_keycache_miss);
228 len += snprintf(buf + len, sizeof(buf) - len,
229 "%8s: %10u\n", "SWBA", sc->debug.stats.istats.swba);
230 len += snprintf(buf + len, sizeof(buf) - len,
231 "%8s: %10u\n", "BMISS", sc->debug.stats.istats.bmiss);
232 len += snprintf(buf + len, sizeof(buf) - len,
233 "%8s: %10u\n", "BNR", sc->debug.stats.istats.bnr);
234 len += snprintf(buf + len, sizeof(buf) - len,
235 "%8s: %10u\n", "CST", sc->debug.stats.istats.cst);
236 len += snprintf(buf + len, sizeof(buf) - len,
237 "%8s: %10u\n", "GTT", sc->debug.stats.istats.gtt);
238 len += snprintf(buf + len, sizeof(buf) - len,
239 "%8s: %10u\n", "TIM", sc->debug.stats.istats.tim);
240 len += snprintf(buf + len, sizeof(buf) - len,
241 "%8s: %10u\n", "CABEND", sc->debug.stats.istats.cabend);
242 len += snprintf(buf + len, sizeof(buf) - len,
243 "%8s: %10u\n", "DTIMSYNC", sc->debug.stats.istats.dtimsync);
244 len += snprintf(buf + len, sizeof(buf) - len,
245 "%8s: %10u\n", "DTIM", sc->debug.stats.istats.dtim);
246 len += snprintf(buf + len, sizeof(buf) - len,
247 "%8s: %10u\n", "TOTAL", sc->debug.stats.istats.total);
248
249 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
250 }
251
252 static const struct file_operations fops_interrupt = {
253 .read = read_file_interrupt,
254 .open = ath9k_debugfs_open,
255 .owner = THIS_MODULE
256 };
257
258 void ath_debug_stat_rc(struct ath_softc *sc, struct sk_buff *skb)
259 {
260 struct ath_tx_info_priv *tx_info_priv = NULL;
261 struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
262 struct ieee80211_tx_rate *rates = tx_info->status.rates;
263 int final_ts_idx, idx;
264 struct ath_rc_stats *stats;
265
266 tx_info_priv = ATH_TX_INFO_PRIV(tx_info);
267 final_ts_idx = tx_info_priv->tx.ts_rateindex;
268 idx = rates[final_ts_idx].idx;
269 stats = &sc->debug.stats.rcstats[idx];
270 stats->success++;
271 }
272
273 void ath_debug_stat_retries(struct ath_softc *sc, int rix,
274 int xretries, int retries, u8 per)
275 {
276 struct ath_rc_stats *stats = &sc->debug.stats.rcstats[rix];
277
278 stats->xretries += xretries;
279 stats->retries += retries;
280 stats->per = per;
281 }
282
283 static ssize_t read_file_rcstat(struct file *file, char __user *user_buf,
284 size_t count, loff_t *ppos)
285 {
286 struct ath_softc *sc = file->private_data;
287 char *buf;
288 unsigned int len = 0, max;
289 int i = 0;
290 ssize_t retval;
291
292 if (sc->cur_rate_table == NULL)
293 return 0;
294
295 max = 80 + sc->cur_rate_table->rate_cnt * 64;
296 buf = kmalloc(max + 1, GFP_KERNEL);
297 if (buf == NULL)
298 return 0;
299 buf[max] = 0;
300
301 len += sprintf(buf, "%5s %15s %8s %9s %3s\n\n", "Rate", "Success",
302 "Retries", "XRetries", "PER");
303
304 for (i = 0; i < sc->cur_rate_table->rate_cnt; i++) {
305 u32 ratekbps = sc->cur_rate_table->info[i].ratekbps;
306 struct ath_rc_stats *stats = &sc->debug.stats.rcstats[i];
307
308 len += snprintf(buf + len, max - len,
309 "%3u.%d: %8u %8u %8u %8u\n", ratekbps / 1000,
310 (ratekbps % 1000) / 100, stats->success,
311 stats->retries, stats->xretries,
312 stats->per);
313 }
314
315 retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
316 kfree(buf);
317 return retval;
318 }
319
320 static const struct file_operations fops_rcstat = {
321 .read = read_file_rcstat,
322 .open = ath9k_debugfs_open,
323 .owner = THIS_MODULE
324 };
325
326 static const char * ath_wiphy_state_str(enum ath_wiphy_state state)
327 {
328 switch (state) {
329 case ATH_WIPHY_INACTIVE:
330 return "INACTIVE";
331 case ATH_WIPHY_ACTIVE:
332 return "ACTIVE";
333 case ATH_WIPHY_PAUSING:
334 return "PAUSING";
335 case ATH_WIPHY_PAUSED:
336 return "PAUSED";
337 case ATH_WIPHY_SCAN:
338 return "SCAN";
339 }
340 return "?";
341 }
342
343 static ssize_t read_file_wiphy(struct file *file, char __user *user_buf,
344 size_t count, loff_t *ppos)
345 {
346 struct ath_softc *sc = file->private_data;
347 char buf[512];
348 unsigned int len = 0;
349 int i;
350 u8 addr[ETH_ALEN];
351
352 len += snprintf(buf + len, sizeof(buf) - len,
353 "primary: %s (%s chan=%d ht=%d)\n",
354 wiphy_name(sc->pri_wiphy->hw->wiphy),
355 ath_wiphy_state_str(sc->pri_wiphy->state),
356 sc->pri_wiphy->chan_idx, sc->pri_wiphy->chan_is_ht);
357 for (i = 0; i < sc->num_sec_wiphy; i++) {
358 struct ath_wiphy *aphy = sc->sec_wiphy[i];
359 if (aphy == NULL)
360 continue;
361 len += snprintf(buf + len, sizeof(buf) - len,
362 "secondary: %s (%s chan=%d ht=%d)\n",
363 wiphy_name(aphy->hw->wiphy),
364 ath_wiphy_state_str(aphy->state),
365 aphy->chan_idx, aphy->chan_is_ht);
366 }
367
368 put_unaligned_le32(REG_READ_D(sc->sc_ah, AR_STA_ID0), addr);
369 put_unaligned_le16(REG_READ_D(sc->sc_ah, AR_STA_ID1) & 0xffff, addr + 4);
370 len += snprintf(buf + len, sizeof(buf) - len,
371 "addr: %pM\n", addr);
372 put_unaligned_le32(REG_READ_D(sc->sc_ah, AR_BSSMSKL), addr);
373 put_unaligned_le16(REG_READ_D(sc->sc_ah, AR_BSSMSKU) & 0xffff, addr + 4);
374 len += snprintf(buf + len, sizeof(buf) - len,
375 "addrmask: %pM\n", addr);
376
377 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
378 }
379
380 static struct ath_wiphy * get_wiphy(struct ath_softc *sc, const char *name)
381 {
382 int i;
383 if (strcmp(name, wiphy_name(sc->pri_wiphy->hw->wiphy)) == 0)
384 return sc->pri_wiphy;
385 for (i = 0; i < sc->num_sec_wiphy; i++) {
386 struct ath_wiphy *aphy = sc->sec_wiphy[i];
387 if (aphy && strcmp(name, wiphy_name(aphy->hw->wiphy)) == 0)
388 return aphy;
389 }
390 return NULL;
391 }
392
393 static int del_wiphy(struct ath_softc *sc, const char *name)
394 {
395 struct ath_wiphy *aphy = get_wiphy(sc, name);
396 if (!aphy)
397 return -ENOENT;
398 return ath9k_wiphy_del(aphy);
399 }
400
401 static int pause_wiphy(struct ath_softc *sc, const char *name)
402 {
403 struct ath_wiphy *aphy = get_wiphy(sc, name);
404 if (!aphy)
405 return -ENOENT;
406 return ath9k_wiphy_pause(aphy);
407 }
408
409 static int unpause_wiphy(struct ath_softc *sc, const char *name)
410 {
411 struct ath_wiphy *aphy = get_wiphy(sc, name);
412 if (!aphy)
413 return -ENOENT;
414 return ath9k_wiphy_unpause(aphy);
415 }
416
417 static int select_wiphy(struct ath_softc *sc, const char *name)
418 {
419 struct ath_wiphy *aphy = get_wiphy(sc, name);
420 if (!aphy)
421 return -ENOENT;
422 return ath9k_wiphy_select(aphy);
423 }
424
425 static int schedule_wiphy(struct ath_softc *sc, const char *msec)
426 {
427 ath9k_wiphy_set_scheduler(sc, simple_strtoul(msec, NULL, 0));
428 return 0;
429 }
430
431 static ssize_t write_file_wiphy(struct file *file, const char __user *user_buf,
432 size_t count, loff_t *ppos)
433 {
434 struct ath_softc *sc = file->private_data;
435 char buf[50];
436 size_t len;
437
438 len = min(count, sizeof(buf) - 1);
439 if (copy_from_user(buf, user_buf, len))
440 return -EFAULT;
441 buf[len] = '\0';
442 if (len > 0 && buf[len - 1] == '\n')
443 buf[len - 1] = '\0';
444
445 if (strncmp(buf, "add", 3) == 0) {
446 int res = ath9k_wiphy_add(sc);
447 if (res < 0)
448 return res;
449 } else if (strncmp(buf, "del=", 4) == 0) {
450 int res = del_wiphy(sc, buf + 4);
451 if (res < 0)
452 return res;
453 } else if (strncmp(buf, "pause=", 6) == 0) {
454 int res = pause_wiphy(sc, buf + 6);
455 if (res < 0)
456 return res;
457 } else if (strncmp(buf, "unpause=", 8) == 0) {
458 int res = unpause_wiphy(sc, buf + 8);
459 if (res < 0)
460 return res;
461 } else if (strncmp(buf, "select=", 7) == 0) {
462 int res = select_wiphy(sc, buf + 7);
463 if (res < 0)
464 return res;
465 } else if (strncmp(buf, "schedule=", 9) == 0) {
466 int res = schedule_wiphy(sc, buf + 9);
467 if (res < 0)
468 return res;
469 } else
470 return -EOPNOTSUPP;
471
472 return count;
473 }
474
475 static const struct file_operations fops_wiphy = {
476 .read = read_file_wiphy,
477 .write = write_file_wiphy,
478 .open = ath9k_debugfs_open,
479 .owner = THIS_MODULE
480 };
481
482 #define PR(str, elem) \
483 do { \
484 len += snprintf(buf + len, size - len, \
485 "%s%13u%11u%10u%10u\n", str, \
486 sc->debug.stats.txstats[sc->tx.hwq_map[ATH9K_WME_AC_BE]].elem, \
487 sc->debug.stats.txstats[sc->tx.hwq_map[ATH9K_WME_AC_BK]].elem, \
488 sc->debug.stats.txstats[sc->tx.hwq_map[ATH9K_WME_AC_VI]].elem, \
489 sc->debug.stats.txstats[sc->tx.hwq_map[ATH9K_WME_AC_VO]].elem); \
490 } while(0)
491
492 static ssize_t read_file_xmit(struct file *file, char __user *user_buf,
493 size_t count, loff_t *ppos)
494 {
495 struct ath_softc *sc = file->private_data;
496 char *buf;
497 unsigned int len = 0, size = 2048;
498 ssize_t retval = 0;
499
500 buf = kzalloc(size, GFP_KERNEL);
501 if (buf == NULL)
502 return 0;
503
504 len += sprintf(buf, "%30s %10s%10s%10s\n\n", "BE", "BK", "VI", "VO");
505
506 PR("MPDUs Queued: ", queued);
507 PR("MPDUs Completed: ", completed);
508 PR("Aggregates: ", a_aggr);
509 PR("AMPDUs Queued: ", a_queued);
510 PR("AMPDUs Completed:", a_completed);
511 PR("AMPDUs Retried: ", a_retries);
512 PR("AMPDUs XRetried: ", a_xretries);
513 PR("FIFO Underrun: ", fifo_underrun);
514 PR("TXOP Exceeded: ", xtxop);
515 PR("TXTIMER Expiry: ", timer_exp);
516 PR("DESC CFG Error: ", desc_cfg_err);
517 PR("DATA Underrun: ", data_underrun);
518 PR("DELIM Underrun: ", delim_underrun);
519
520 retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
521 kfree(buf);
522
523 return retval;
524 }
525
526 void ath_debug_stat_tx(struct ath_softc *sc, struct ath_txq *txq,
527 struct ath_buf *bf)
528 {
529 struct ath_desc *ds = bf->bf_desc;
530
531 if (bf_isampdu(bf)) {
532 if (bf_isxretried(bf))
533 TX_STAT_INC(txq->axq_qnum, a_xretries);
534 else
535 TX_STAT_INC(txq->axq_qnum, a_completed);
536 } else {
537 TX_STAT_INC(txq->axq_qnum, completed);
538 }
539
540 if (ds->ds_txstat.ts_status & ATH9K_TXERR_FIFO)
541 TX_STAT_INC(txq->axq_qnum, fifo_underrun);
542 if (ds->ds_txstat.ts_status & ATH9K_TXERR_XTXOP)
543 TX_STAT_INC(txq->axq_qnum, xtxop);
544 if (ds->ds_txstat.ts_status & ATH9K_TXERR_TIMER_EXPIRED)
545 TX_STAT_INC(txq->axq_qnum, timer_exp);
546 if (ds->ds_txstat.ts_flags & ATH9K_TX_DESC_CFG_ERR)
547 TX_STAT_INC(txq->axq_qnum, desc_cfg_err);
548 if (ds->ds_txstat.ts_flags & ATH9K_TX_DATA_UNDERRUN)
549 TX_STAT_INC(txq->axq_qnum, data_underrun);
550 if (ds->ds_txstat.ts_flags & ATH9K_TX_DELIM_UNDERRUN)
551 TX_STAT_INC(txq->axq_qnum, delim_underrun);
552 }
553
554 static const struct file_operations fops_xmit = {
555 .read = read_file_xmit,
556 .open = ath9k_debugfs_open,
557 .owner = THIS_MODULE
558 };
559
560 int ath9k_init_debug(struct ath_hw *ah)
561 {
562 struct ath_common *common = ath9k_hw_common(ah);
563 struct ath_softc *sc = (struct ath_softc *) common->priv;
564
565 if (!ath9k_debugfs_root)
566 return -ENOENT;
567
568 sc->debug.debugfs_phy = debugfs_create_dir(wiphy_name(sc->hw->wiphy),
569 ath9k_debugfs_root);
570 if (!sc->debug.debugfs_phy)
571 goto err;
572
573 sc->debug.debugfs_debug = debugfs_create_file("debug",
574 S_IRUSR | S_IWUSR, sc->debug.debugfs_phy, sc, &fops_debug);
575 if (!sc->debug.debugfs_debug)
576 goto err;
577
578 sc->debug.debugfs_dma = debugfs_create_file("dma", S_IRUSR,
579 sc->debug.debugfs_phy, sc, &fops_dma);
580 if (!sc->debug.debugfs_dma)
581 goto err;
582
583 sc->debug.debugfs_interrupt = debugfs_create_file("interrupt",
584 S_IRUSR,
585 sc->debug.debugfs_phy,
586 sc, &fops_interrupt);
587 if (!sc->debug.debugfs_interrupt)
588 goto err;
589
590 sc->debug.debugfs_rcstat = debugfs_create_file("rcstat",
591 S_IRUSR,
592 sc->debug.debugfs_phy,
593 sc, &fops_rcstat);
594 if (!sc->debug.debugfs_rcstat)
595 goto err;
596
597 sc->debug.debugfs_wiphy = debugfs_create_file(
598 "wiphy", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy, sc,
599 &fops_wiphy);
600 if (!sc->debug.debugfs_wiphy)
601 goto err;
602
603 sc->debug.debugfs_xmit = debugfs_create_file("xmit",
604 S_IRUSR,
605 sc->debug.debugfs_phy,
606 sc, &fops_xmit);
607 if (!sc->debug.debugfs_xmit)
608 goto err;
609
610 return 0;
611 err:
612 ath9k_exit_debug(ah);
613 return -ENOMEM;
614 }
615
616 void ath9k_exit_debug(struct ath_hw *ah)
617 {
618 struct ath_common *common = ath9k_hw_common(ah);
619 struct ath_softc *sc = (struct ath_softc *) common->priv;
620
621 debugfs_remove(sc->debug.debugfs_xmit);
622 debugfs_remove(sc->debug.debugfs_wiphy);
623 debugfs_remove(sc->debug.debugfs_rcstat);
624 debugfs_remove(sc->debug.debugfs_interrupt);
625 debugfs_remove(sc->debug.debugfs_dma);
626 debugfs_remove(sc->debug.debugfs_debug);
627 debugfs_remove(sc->debug.debugfs_phy);
628 }
629
630 int ath9k_debug_create_root(void)
631 {
632 ath9k_debugfs_root = debugfs_create_dir(KBUILD_MODNAME, NULL);
633 if (!ath9k_debugfs_root)
634 return -ENOENT;
635
636 return 0;
637 }
638
639 void ath9k_debug_remove_root(void)
640 {
641 debugfs_remove(ath9k_debugfs_root);
642 ath9k_debugfs_root = NULL;
643 }
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