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ath9k : Fix for displaying the channel number
[linux-2.6.git] / drivers / net / wireless / ath / ath9k / debug.c
blob7a5932a6691a51c24a85aef266bb54787d9003e9
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 <linux/slab.h>
18 #include <asm/unaligned.h>
19
20 #include "ath9k.h"
21
22 #define REG_WRITE_D(_ah, _reg, _val) \
23 ath9k_hw_common(_ah)->ops->write((_ah), (_val), (_reg))
24 #define REG_READ_D(_ah, _reg) \
25 ath9k_hw_common(_ah)->ops->read((_ah), (_reg))
26
27 static struct dentry *ath9k_debugfs_root;
28
29 static int ath9k_debugfs_open(struct inode *inode, struct file *file)
30 {
31 file->private_data = inode->i_private;
32 return 0;
33 }
34
35 #ifdef CONFIG_ATH_DEBUG
36
37 static ssize_t read_file_debug(struct file *file, char __user *user_buf,
38 size_t count, loff_t *ppos)
39 {
40 struct ath_softc *sc = file->private_data;
41 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
42 char buf[32];
43 unsigned int len;
44
45 len = sprintf(buf, "0x%08x\n", common->debug_mask);
46 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
47 }
48
49 static ssize_t write_file_debug(struct file *file, const char __user *user_buf,
50 size_t count, loff_t *ppos)
51 {
52 struct ath_softc *sc = file->private_data;
53 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
54 unsigned long mask;
55 char buf[32];
56 ssize_t len;
57
58 len = min(count, sizeof(buf) - 1);
59 if (copy_from_user(buf, user_buf, len))
60 return -EFAULT;
61
62 buf[len] = '\0';
63 if (strict_strtoul(buf, 0, &mask))
64 return -EINVAL;
65
66 common->debug_mask = mask;
67 return count;
68 }
69
70 static const struct file_operations fops_debug = {
71 .read = read_file_debug,
72 .write = write_file_debug,
73 .open = ath9k_debugfs_open,
74 .owner = THIS_MODULE
75 };
76
77 #endif
78
79 #define DMA_BUF_LEN 1024
80
81 static ssize_t read_file_tx_chainmask(struct file *file, char __user *user_buf,
82 size_t count, loff_t *ppos)
83 {
84 struct ath_softc *sc = file->private_data;
85 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
86 char buf[32];
87 unsigned int len;
88
89 len = sprintf(buf, "0x%08x\n", common->tx_chainmask);
90 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
91 }
92
93 static ssize_t write_file_tx_chainmask(struct file *file, const char __user *user_buf,
94 size_t count, loff_t *ppos)
95 {
96 struct ath_softc *sc = file->private_data;
97 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
98 unsigned long mask;
99 char buf[32];
100 ssize_t len;
101
102 len = min(count, sizeof(buf) - 1);
103 if (copy_from_user(buf, user_buf, len))
104 return -EFAULT;
105
106 buf[len] = '\0';
107 if (strict_strtoul(buf, 0, &mask))
108 return -EINVAL;
109
110 common->tx_chainmask = mask;
111 sc->sc_ah->caps.tx_chainmask = mask;
112 return count;
113 }
114
115 static const struct file_operations fops_tx_chainmask = {
116 .read = read_file_tx_chainmask,
117 .write = write_file_tx_chainmask,
118 .open = ath9k_debugfs_open,
119 .owner = THIS_MODULE
120 };
121
122
123 static ssize_t read_file_rx_chainmask(struct file *file, char __user *user_buf,
124 size_t count, loff_t *ppos)
125 {
126 struct ath_softc *sc = file->private_data;
127 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
128 char buf[32];
129 unsigned int len;
130
131 len = sprintf(buf, "0x%08x\n", common->rx_chainmask);
132 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
133 }
134
135 static ssize_t write_file_rx_chainmask(struct file *file, const char __user *user_buf,
136 size_t count, loff_t *ppos)
137 {
138 struct ath_softc *sc = file->private_data;
139 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
140 unsigned long mask;
141 char buf[32];
142 ssize_t len;
143
144 len = min(count, sizeof(buf) - 1);
145 if (copy_from_user(buf, user_buf, len))
146 return -EFAULT;
147
148 buf[len] = '\0';
149 if (strict_strtoul(buf, 0, &mask))
150 return -EINVAL;
151
152 common->rx_chainmask = mask;
153 sc->sc_ah->caps.rx_chainmask = mask;
154 return count;
155 }
156
157 static const struct file_operations fops_rx_chainmask = {
158 .read = read_file_rx_chainmask,
159 .write = write_file_rx_chainmask,
160 .open = ath9k_debugfs_open,
161 .owner = THIS_MODULE
162 };
163
164
165 static ssize_t read_file_dma(struct file *file, char __user *user_buf,
166 size_t count, loff_t *ppos)
167 {
168 struct ath_softc *sc = file->private_data;
169 struct ath_hw *ah = sc->sc_ah;
170 char *buf;
171 int retval;
172 unsigned int len = 0;
173 u32 val[ATH9K_NUM_DMA_DEBUG_REGS];
174 int i, qcuOffset = 0, dcuOffset = 0;
175 u32 *qcuBase = &val[0], *dcuBase = &val[4];
176
177 buf = kmalloc(DMA_BUF_LEN, GFP_KERNEL);
178 if (!buf)
179 return -ENOMEM;
180
181 ath9k_ps_wakeup(sc);
182
183 REG_WRITE_D(ah, AR_MACMISC,
184 ((AR_MACMISC_DMA_OBS_LINE_8 << AR_MACMISC_DMA_OBS_S) |
185 (AR_MACMISC_MISC_OBS_BUS_1 <<
186 AR_MACMISC_MISC_OBS_BUS_MSB_S)));
187
188 len += snprintf(buf + len, DMA_BUF_LEN - len,
189 "Raw DMA Debug values:\n");
190
191 for (i = 0; i < ATH9K_NUM_DMA_DEBUG_REGS; i++) {
192 if (i % 4 == 0)
193 len += snprintf(buf + len, DMA_BUF_LEN - len, "\n");
194
195 val[i] = REG_READ_D(ah, AR_DMADBG_0 + (i * sizeof(u32)));
196 len += snprintf(buf + len, DMA_BUF_LEN - len, "%d: %08x ",
197 i, val[i]);
198 }
199
200 len += snprintf(buf + len, DMA_BUF_LEN - len, "\n\n");
201 len += snprintf(buf + len, DMA_BUF_LEN - len,
202 "Num QCU: chain_st fsp_ok fsp_st DCU: chain_st\n");
203
204 for (i = 0; i < ATH9K_NUM_QUEUES; i++, qcuOffset += 4, dcuOffset += 5) {
205 if (i == 8) {
206 qcuOffset = 0;
207 qcuBase++;
208 }
209
210 if (i == 6) {
211 dcuOffset = 0;
212 dcuBase++;
213 }
214
215 len += snprintf(buf + len, DMA_BUF_LEN - len,
216 "%2d %2x %1x %2x %2x\n",
217 i, (*qcuBase & (0x7 << qcuOffset)) >> qcuOffset,
218 (*qcuBase & (0x8 << qcuOffset)) >> (qcuOffset + 3),
219 val[2] & (0x7 << (i * 3)) >> (i * 3),
220 (*dcuBase & (0x1f << dcuOffset)) >> dcuOffset);
221 }
222
223 len += snprintf(buf + len, DMA_BUF_LEN - len, "\n");
224
225 len += snprintf(buf + len, DMA_BUF_LEN - len,
226 "qcu_stitch state: %2x qcu_fetch state: %2x\n",
227 (val[3] & 0x003c0000) >> 18, (val[3] & 0x03c00000) >> 22);
228 len += snprintf(buf + len, DMA_BUF_LEN - len,
229 "qcu_complete state: %2x dcu_complete state: %2x\n",
230 (val[3] & 0x1c000000) >> 26, (val[6] & 0x3));
231 len += snprintf(buf + len, DMA_BUF_LEN - len,
232 "dcu_arb state: %2x dcu_fp state: %2x\n",
233 (val[5] & 0x06000000) >> 25, (val[5] & 0x38000000) >> 27);
234 len += snprintf(buf + len, DMA_BUF_LEN - len,
235 "chan_idle_dur: %3d chan_idle_dur_valid: %1d\n",
236 (val[6] & 0x000003fc) >> 2, (val[6] & 0x00000400) >> 10);
237 len += snprintf(buf + len, DMA_BUF_LEN - len,
238 "txfifo_valid_0: %1d txfifo_valid_1: %1d\n",
239 (val[6] & 0x00000800) >> 11, (val[6] & 0x00001000) >> 12);
240 len += snprintf(buf + len, DMA_BUF_LEN - len,
241 "txfifo_dcu_num_0: %2d txfifo_dcu_num_1: %2d\n",
242 (val[6] & 0x0001e000) >> 13, (val[6] & 0x001e0000) >> 17);
243
244 len += snprintf(buf + len, DMA_BUF_LEN - len, "pcu observe: 0x%x\n",
245 REG_READ_D(ah, AR_OBS_BUS_1));
246 len += snprintf(buf + len, DMA_BUF_LEN - len,
247 "AR_CR: 0x%x\n", REG_READ_D(ah, AR_CR));
248
249 ath9k_ps_restore(sc);
250
251 if (len > DMA_BUF_LEN)
252 len = DMA_BUF_LEN;
253
254 retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
255 kfree(buf);
256 return retval;
257 }
258
259 static const struct file_operations fops_dma = {
260 .read = read_file_dma,
261 .open = ath9k_debugfs_open,
262 .owner = THIS_MODULE
263 };
264
265
266 void ath_debug_stat_interrupt(struct ath_softc *sc, enum ath9k_int status)
267 {
268 if (status)
269 sc->debug.stats.istats.total++;
270 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
271 if (status & ATH9K_INT_RXLP)
272 sc->debug.stats.istats.rxlp++;
273 if (status & ATH9K_INT_RXHP)
274 sc->debug.stats.istats.rxhp++;
275 if (status & ATH9K_INT_BB_WATCHDOG)
276 sc->debug.stats.istats.bb_watchdog++;
277 } else {
278 if (status & ATH9K_INT_RX)
279 sc->debug.stats.istats.rxok++;
280 }
281 if (status & ATH9K_INT_RXEOL)
282 sc->debug.stats.istats.rxeol++;
283 if (status & ATH9K_INT_RXORN)
284 sc->debug.stats.istats.rxorn++;
285 if (status & ATH9K_INT_TX)
286 sc->debug.stats.istats.txok++;
287 if (status & ATH9K_INT_TXURN)
288 sc->debug.stats.istats.txurn++;
289 if (status & ATH9K_INT_MIB)
290 sc->debug.stats.istats.mib++;
291 if (status & ATH9K_INT_RXPHY)
292 sc->debug.stats.istats.rxphyerr++;
293 if (status & ATH9K_INT_RXKCM)
294 sc->debug.stats.istats.rx_keycache_miss++;
295 if (status & ATH9K_INT_SWBA)
296 sc->debug.stats.istats.swba++;
297 if (status & ATH9K_INT_BMISS)
298 sc->debug.stats.istats.bmiss++;
299 if (status & ATH9K_INT_BNR)
300 sc->debug.stats.istats.bnr++;
301 if (status & ATH9K_INT_CST)
302 sc->debug.stats.istats.cst++;
303 if (status & ATH9K_INT_GTT)
304 sc->debug.stats.istats.gtt++;
305 if (status & ATH9K_INT_TIM)
306 sc->debug.stats.istats.tim++;
307 if (status & ATH9K_INT_CABEND)
308 sc->debug.stats.istats.cabend++;
309 if (status & ATH9K_INT_DTIMSYNC)
310 sc->debug.stats.istats.dtimsync++;
311 if (status & ATH9K_INT_DTIM)
312 sc->debug.stats.istats.dtim++;
313 }
314
315 static ssize_t read_file_interrupt(struct file *file, char __user *user_buf,
316 size_t count, loff_t *ppos)
317 {
318 struct ath_softc *sc = file->private_data;
319 char buf[512];
320 unsigned int len = 0;
321
322 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
323 len += snprintf(buf + len, sizeof(buf) - len,
324 "%8s: %10u\n", "RXLP", sc->debug.stats.istats.rxlp);
325 len += snprintf(buf + len, sizeof(buf) - len,
326 "%8s: %10u\n", "RXHP", sc->debug.stats.istats.rxhp);
327 len += snprintf(buf + len, sizeof(buf) - len,
328 "%8s: %10u\n", "WATCHDOG",
329 sc->debug.stats.istats.bb_watchdog);
330 } else {
331 len += snprintf(buf + len, sizeof(buf) - len,
332 "%8s: %10u\n", "RX", sc->debug.stats.istats.rxok);
333 }
334 len += snprintf(buf + len, sizeof(buf) - len,
335 "%8s: %10u\n", "RXEOL", sc->debug.stats.istats.rxeol);
336 len += snprintf(buf + len, sizeof(buf) - len,
337 "%8s: %10u\n", "RXORN", sc->debug.stats.istats.rxorn);
338 len += snprintf(buf + len, sizeof(buf) - len,
339 "%8s: %10u\n", "TX", sc->debug.stats.istats.txok);
340 len += snprintf(buf + len, sizeof(buf) - len,
341 "%8s: %10u\n", "TXURN", sc->debug.stats.istats.txurn);
342 len += snprintf(buf + len, sizeof(buf) - len,
343 "%8s: %10u\n", "MIB", sc->debug.stats.istats.mib);
344 len += snprintf(buf + len, sizeof(buf) - len,
345 "%8s: %10u\n", "RXPHY", sc->debug.stats.istats.rxphyerr);
346 len += snprintf(buf + len, sizeof(buf) - len,
347 "%8s: %10u\n", "RXKCM", sc->debug.stats.istats.rx_keycache_miss);
348 len += snprintf(buf + len, sizeof(buf) - len,
349 "%8s: %10u\n", "SWBA", sc->debug.stats.istats.swba);
350 len += snprintf(buf + len, sizeof(buf) - len,
351 "%8s: %10u\n", "BMISS", sc->debug.stats.istats.bmiss);
352 len += snprintf(buf + len, sizeof(buf) - len,
353 "%8s: %10u\n", "BNR", sc->debug.stats.istats.bnr);
354 len += snprintf(buf + len, sizeof(buf) - len,
355 "%8s: %10u\n", "CST", sc->debug.stats.istats.cst);
356 len += snprintf(buf + len, sizeof(buf) - len,
357 "%8s: %10u\n", "GTT", sc->debug.stats.istats.gtt);
358 len += snprintf(buf + len, sizeof(buf) - len,
359 "%8s: %10u\n", "TIM", sc->debug.stats.istats.tim);
360 len += snprintf(buf + len, sizeof(buf) - len,
361 "%8s: %10u\n", "CABEND", sc->debug.stats.istats.cabend);
362 len += snprintf(buf + len, sizeof(buf) - len,
363 "%8s: %10u\n", "DTIMSYNC", sc->debug.stats.istats.dtimsync);
364 len += snprintf(buf + len, sizeof(buf) - len,
365 "%8s: %10u\n", "DTIM", sc->debug.stats.istats.dtim);
366 len += snprintf(buf + len, sizeof(buf) - len,
367 "%8s: %10u\n", "TOTAL", sc->debug.stats.istats.total);
368
369 if (len > sizeof(buf))
370 len = sizeof(buf);
371
372 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
373 }
374
375 static const struct file_operations fops_interrupt = {
376 .read = read_file_interrupt,
377 .open = ath9k_debugfs_open,
378 .owner = THIS_MODULE
379 };
380
381 void ath_debug_stat_rc(struct ath_softc *sc, int final_rate)
382 {
383 struct ath_rc_stats *stats;
384
385 stats = &sc->debug.stats.rcstats[final_rate];
386 stats->success++;
387 }
388
389 void ath_debug_stat_retries(struct ath_softc *sc, int rix,
390 int xretries, int retries, u8 per)
391 {
392 struct ath_rc_stats *stats = &sc->debug.stats.rcstats[rix];
393
394 stats->xretries += xretries;
395 stats->retries += retries;
396 stats->per = per;
397 }
398
399 static ssize_t read_file_rcstat(struct file *file, char __user *user_buf,
400 size_t count, loff_t *ppos)
401 {
402 struct ath_softc *sc = file->private_data;
403 char *buf;
404 unsigned int len = 0, max;
405 int i = 0;
406 ssize_t retval;
407
408 if (sc->cur_rate_table == NULL)
409 return 0;
410
411 max = 80 + sc->cur_rate_table->rate_cnt * 1024 + 1;
412 buf = kmalloc(max, GFP_KERNEL);
413 if (buf == NULL)
414 return -ENOMEM;
415
416 len += sprintf(buf, "%6s %6s %6s "
417 "%10s %10s %10s %10s\n",
418 "HT", "MCS", "Rate",
419 "Success", "Retries", "XRetries", "PER");
420
421 for (i = 0; i < sc->cur_rate_table->rate_cnt; i++) {
422 u32 ratekbps = sc->cur_rate_table->info[i].ratekbps;
423 struct ath_rc_stats *stats = &sc->debug.stats.rcstats[i];
424 char mcs[5];
425 char htmode[5];
426 int used_mcs = 0, used_htmode = 0;
427
428 if (WLAN_RC_PHY_HT(sc->cur_rate_table->info[i].phy)) {
429 used_mcs = snprintf(mcs, 5, "%d",
430 sc->cur_rate_table->info[i].ratecode);
431
432 if (WLAN_RC_PHY_40(sc->cur_rate_table->info[i].phy))
433 used_htmode = snprintf(htmode, 5, "HT40");
434 else if (WLAN_RC_PHY_20(sc->cur_rate_table->info[i].phy))
435 used_htmode = snprintf(htmode, 5, "HT20");
436 else
437 used_htmode = snprintf(htmode, 5, "????");
438 }
439
440 mcs[used_mcs] = '\0';
441 htmode[used_htmode] = '\0';
442
443 len += snprintf(buf + len, max - len,
444 "%6s %6s %3u.%d: "
445 "%10u %10u %10u %10u\n",
446 htmode,
447 mcs,
448 ratekbps / 1000,
449 (ratekbps % 1000) / 100,
450 stats->success,
451 stats->retries,
452 stats->xretries,
453 stats->per);
454 }
455
456 if (len > max)
457 len = max;
458
459 retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
460 kfree(buf);
461 return retval;
462 }
463
464 static const struct file_operations fops_rcstat = {
465 .read = read_file_rcstat,
466 .open = ath9k_debugfs_open,
467 .owner = THIS_MODULE
468 };
469
470 static const char * ath_wiphy_state_str(enum ath_wiphy_state state)
471 {
472 switch (state) {
473 case ATH_WIPHY_INACTIVE:
474 return "INACTIVE";
475 case ATH_WIPHY_ACTIVE:
476 return "ACTIVE";
477 case ATH_WIPHY_PAUSING:
478 return "PAUSING";
479 case ATH_WIPHY_PAUSED:
480 return "PAUSED";
481 case ATH_WIPHY_SCAN:
482 return "SCAN";
483 }
484 return "?";
485 }
486
487 static ssize_t read_file_wiphy(struct file *file, char __user *user_buf,
488 size_t count, loff_t *ppos)
489 {
490 struct ath_softc *sc = file->private_data;
491 struct ath_wiphy *aphy = sc->pri_wiphy;
492 struct ieee80211_channel *chan = aphy->hw->conf.channel;
493 char buf[512];
494 unsigned int len = 0;
495 int i;
496 u8 addr[ETH_ALEN];
497 u32 tmp;
498
499 len += snprintf(buf + len, sizeof(buf) - len,
500 "primary: %s (%s chan=%d ht=%d)\n",
501 wiphy_name(sc->pri_wiphy->hw->wiphy),
502 ath_wiphy_state_str(sc->pri_wiphy->state),
503 ieee80211_frequency_to_channel(chan->center_freq),
504 aphy->chan_is_ht);
505
506 put_unaligned_le32(REG_READ_D(sc->sc_ah, AR_STA_ID0), addr);
507 put_unaligned_le16(REG_READ_D(sc->sc_ah, AR_STA_ID1) & 0xffff, addr + 4);
508 len += snprintf(buf + len, sizeof(buf) - len,
509 "addr: %pM\n", addr);
510 put_unaligned_le32(REG_READ_D(sc->sc_ah, AR_BSSMSKL), addr);
511 put_unaligned_le16(REG_READ_D(sc->sc_ah, AR_BSSMSKU) & 0xffff, addr + 4);
512 len += snprintf(buf + len, sizeof(buf) - len,
513 "addrmask: %pM\n", addr);
514 tmp = ath9k_hw_getrxfilter(sc->sc_ah);
515 len += snprintf(buf + len, sizeof(buf) - len,
516 "rfilt: 0x%x", tmp);
517 if (tmp & ATH9K_RX_FILTER_UCAST)
518 len += snprintf(buf + len, sizeof(buf) - len, " UCAST");
519 if (tmp & ATH9K_RX_FILTER_MCAST)
520 len += snprintf(buf + len, sizeof(buf) - len, " MCAST");
521 if (tmp & ATH9K_RX_FILTER_BCAST)
522 len += snprintf(buf + len, sizeof(buf) - len, " BCAST");
523 if (tmp & ATH9K_RX_FILTER_CONTROL)
524 len += snprintf(buf + len, sizeof(buf) - len, " CONTROL");
525 if (tmp & ATH9K_RX_FILTER_BEACON)
526 len += snprintf(buf + len, sizeof(buf) - len, " BEACON");
527 if (tmp & ATH9K_RX_FILTER_PROM)
528 len += snprintf(buf + len, sizeof(buf) - len, " PROM");
529 if (tmp & ATH9K_RX_FILTER_PROBEREQ)
530 len += snprintf(buf + len, sizeof(buf) - len, " PROBEREQ");
531 if (tmp & ATH9K_RX_FILTER_PHYERR)
532 len += snprintf(buf + len, sizeof(buf) - len, " PHYERR");
533 if (tmp & ATH9K_RX_FILTER_MYBEACON)
534 len += snprintf(buf + len, sizeof(buf) - len, " MYBEACON");
535 if (tmp & ATH9K_RX_FILTER_COMP_BAR)
536 len += snprintf(buf + len, sizeof(buf) - len, " COMP_BAR");
537 if (tmp & ATH9K_RX_FILTER_PSPOLL)
538 len += snprintf(buf + len, sizeof(buf) - len, " PSPOLL");
539 if (tmp & ATH9K_RX_FILTER_PHYRADAR)
540 len += snprintf(buf + len, sizeof(buf) - len, " PHYRADAR");
541 if (tmp & ATH9K_RX_FILTER_MCAST_BCAST_ALL)
542 len += snprintf(buf + len, sizeof(buf) - len, " MCAST_BCAST_ALL\n");
543 else
544 len += snprintf(buf + len, sizeof(buf) - len, "\n");
545
546 /* Put variable-length stuff down here, and check for overflows. */
547 for (i = 0; i < sc->num_sec_wiphy; i++) {
548 struct ath_wiphy *aphy = sc->sec_wiphy[i];
549 if (aphy == NULL)
550 continue;
551 chan = aphy->hw->conf.channel;
552 len += snprintf(buf + len, sizeof(buf) - len,
553 "secondary: %s (%s chan=%d ht=%d)\n",
554 wiphy_name(aphy->hw->wiphy),
555 ath_wiphy_state_str(aphy->state),
556 ieee80211_frequency_to_channel(chan->center_freq),
557 aphy->chan_is_ht);
558 }
559 if (len > sizeof(buf))
560 len = sizeof(buf);
561
562 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
563 }
564
565 static struct ath_wiphy * get_wiphy(struct ath_softc *sc, const char *name)
566 {
567 int i;
568 if (strcmp(name, wiphy_name(sc->pri_wiphy->hw->wiphy)) == 0)
569 return sc->pri_wiphy;
570 for (i = 0; i < sc->num_sec_wiphy; i++) {
571 struct ath_wiphy *aphy = sc->sec_wiphy[i];
572 if (aphy && strcmp(name, wiphy_name(aphy->hw->wiphy)) == 0)
573 return aphy;
574 }
575 return NULL;
576 }
577
578 static int del_wiphy(struct ath_softc *sc, const char *name)
579 {
580 struct ath_wiphy *aphy = get_wiphy(sc, name);
581 if (!aphy)
582 return -ENOENT;
583 return ath9k_wiphy_del(aphy);
584 }
585
586 static int pause_wiphy(struct ath_softc *sc, const char *name)
587 {
588 struct ath_wiphy *aphy = get_wiphy(sc, name);
589 if (!aphy)
590 return -ENOENT;
591 return ath9k_wiphy_pause(aphy);
592 }
593
594 static int unpause_wiphy(struct ath_softc *sc, const char *name)
595 {
596 struct ath_wiphy *aphy = get_wiphy(sc, name);
597 if (!aphy)
598 return -ENOENT;
599 return ath9k_wiphy_unpause(aphy);
600 }
601
602 static int select_wiphy(struct ath_softc *sc, const char *name)
603 {
604 struct ath_wiphy *aphy = get_wiphy(sc, name);
605 if (!aphy)
606 return -ENOENT;
607 return ath9k_wiphy_select(aphy);
608 }
609
610 static int schedule_wiphy(struct ath_softc *sc, const char *msec)
611 {
612 ath9k_wiphy_set_scheduler(sc, simple_strtoul(msec, NULL, 0));
613 return 0;
614 }
615
616 static ssize_t write_file_wiphy(struct file *file, const char __user *user_buf,
617 size_t count, loff_t *ppos)
618 {
619 struct ath_softc *sc = file->private_data;
620 char buf[50];
621 size_t len;
622
623 len = min(count, sizeof(buf) - 1);
624 if (copy_from_user(buf, user_buf, len))
625 return -EFAULT;
626 buf[len] = '\0';
627 if (len > 0 && buf[len - 1] == '\n')
628 buf[len - 1] = '\0';
629
630 if (strncmp(buf, "add", 3) == 0) {
631 int res = ath9k_wiphy_add(sc);
632 if (res < 0)
633 return res;
634 } else if (strncmp(buf, "del=", 4) == 0) {
635 int res = del_wiphy(sc, buf + 4);
636 if (res < 0)
637 return res;
638 } else if (strncmp(buf, "pause=", 6) == 0) {
639 int res = pause_wiphy(sc, buf + 6);
640 if (res < 0)
641 return res;
642 } else if (strncmp(buf, "unpause=", 8) == 0) {
643 int res = unpause_wiphy(sc, buf + 8);
644 if (res < 0)
645 return res;
646 } else if (strncmp(buf, "select=", 7) == 0) {
647 int res = select_wiphy(sc, buf + 7);
648 if (res < 0)
649 return res;
650 } else if (strncmp(buf, "schedule=", 9) == 0) {
651 int res = schedule_wiphy(sc, buf + 9);
652 if (res < 0)
653 return res;
654 } else
655 return -EOPNOTSUPP;
656
657 return count;
658 }
659
660 static const struct file_operations fops_wiphy = {
661 .read = read_file_wiphy,
662 .write = write_file_wiphy,
663 .open = ath9k_debugfs_open,
664 .owner = THIS_MODULE
665 };
666
667 #define PR(str, elem) \
668 do { \
669 len += snprintf(buf + len, size - len, \
670 "%s%13u%11u%10u%10u\n", str, \
671 sc->debug.stats.txstats[sc->tx.hwq_map[WME_AC_BE]].elem, \
672 sc->debug.stats.txstats[sc->tx.hwq_map[WME_AC_BK]].elem, \
673 sc->debug.stats.txstats[sc->tx.hwq_map[WME_AC_VI]].elem, \
674 sc->debug.stats.txstats[sc->tx.hwq_map[WME_AC_VO]].elem); \
675 } while(0)
676
677 static ssize_t read_file_xmit(struct file *file, char __user *user_buf,
678 size_t count, loff_t *ppos)
679 {
680 struct ath_softc *sc = file->private_data;
681 char *buf;
682 unsigned int len = 0, size = 2048;
683 ssize_t retval = 0;
684
685 buf = kzalloc(size, GFP_KERNEL);
686 if (buf == NULL)
687 return -ENOMEM;
688
689 len += sprintf(buf, "%30s %10s%10s%10s\n\n", "BE", "BK", "VI", "VO");
690
691 PR("MPDUs Queued: ", queued);
692 PR("MPDUs Completed: ", completed);
693 PR("Aggregates: ", a_aggr);
694 PR("AMPDUs Queued: ", a_queued);
695 PR("AMPDUs Completed:", a_completed);
696 PR("AMPDUs Retried: ", a_retries);
697 PR("AMPDUs XRetried: ", a_xretries);
698 PR("FIFO Underrun: ", fifo_underrun);
699 PR("TXOP Exceeded: ", xtxop);
700 PR("TXTIMER Expiry: ", timer_exp);
701 PR("DESC CFG Error: ", desc_cfg_err);
702 PR("DATA Underrun: ", data_underrun);
703 PR("DELIM Underrun: ", delim_underrun);
704
705 if (len > size)
706 len = size;
707
708 retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
709 kfree(buf);
710
711 return retval;
712 }
713
714 void ath_debug_stat_tx(struct ath_softc *sc, struct ath_txq *txq,
715 struct ath_buf *bf, struct ath_tx_status *ts)
716 {
717 if (bf_isampdu(bf)) {
718 if (bf_isxretried(bf))
719 TX_STAT_INC(txq->axq_qnum, a_xretries);
720 else
721 TX_STAT_INC(txq->axq_qnum, a_completed);
722 } else {
723 TX_STAT_INC(txq->axq_qnum, completed);
724 }
725
726 if (ts->ts_status & ATH9K_TXERR_FIFO)
727 TX_STAT_INC(txq->axq_qnum, fifo_underrun);
728 if (ts->ts_status & ATH9K_TXERR_XTXOP)
729 TX_STAT_INC(txq->axq_qnum, xtxop);
730 if (ts->ts_status & ATH9K_TXERR_TIMER_EXPIRED)
731 TX_STAT_INC(txq->axq_qnum, timer_exp);
732 if (ts->ts_flags & ATH9K_TX_DESC_CFG_ERR)
733 TX_STAT_INC(txq->axq_qnum, desc_cfg_err);
734 if (ts->ts_flags & ATH9K_TX_DATA_UNDERRUN)
735 TX_STAT_INC(txq->axq_qnum, data_underrun);
736 if (ts->ts_flags & ATH9K_TX_DELIM_UNDERRUN)
737 TX_STAT_INC(txq->axq_qnum, delim_underrun);
738 }
739
740 static const struct file_operations fops_xmit = {
741 .read = read_file_xmit,
742 .open = ath9k_debugfs_open,
743 .owner = THIS_MODULE
744 };
745
746 static ssize_t read_file_recv(struct file *file, char __user *user_buf,
747 size_t count, loff_t *ppos)
748 {
749 #define PHY_ERR(s, p) \
750 len += snprintf(buf + len, size - len, "%18s : %10u\n", s, \
751 sc->debug.stats.rxstats.phy_err_stats[p]);
752
753 struct ath_softc *sc = file->private_data;
754 char *buf;
755 unsigned int len = 0, size = 1152;
756 ssize_t retval = 0;
757
758 buf = kzalloc(size, GFP_KERNEL);
759 if (buf == NULL)
760 return -ENOMEM;
761
762 len += snprintf(buf + len, size - len,
763 "%18s : %10u\n", "CRC ERR",
764 sc->debug.stats.rxstats.crc_err);
765 len += snprintf(buf + len, size - len,
766 "%18s : %10u\n", "DECRYPT CRC ERR",
767 sc->debug.stats.rxstats.decrypt_crc_err);
768 len += snprintf(buf + len, size - len,
769 "%18s : %10u\n", "PHY ERR",
770 sc->debug.stats.rxstats.phy_err);
771 len += snprintf(buf + len, size - len,
772 "%18s : %10u\n", "MIC ERR",
773 sc->debug.stats.rxstats.mic_err);
774 len += snprintf(buf + len, size - len,
775 "%18s : %10u\n", "PRE-DELIM CRC ERR",
776 sc->debug.stats.rxstats.pre_delim_crc_err);
777 len += snprintf(buf + len, size - len,
778 "%18s : %10u\n", "POST-DELIM CRC ERR",
779 sc->debug.stats.rxstats.post_delim_crc_err);
780 len += snprintf(buf + len, size - len,
781 "%18s : %10u\n", "DECRYPT BUSY ERR",
782 sc->debug.stats.rxstats.decrypt_busy_err);
783
784 PHY_ERR("UNDERRUN", ATH9K_PHYERR_UNDERRUN);
785 PHY_ERR("TIMING", ATH9K_PHYERR_TIMING);
786 PHY_ERR("PARITY", ATH9K_PHYERR_PARITY);
787 PHY_ERR("RATE", ATH9K_PHYERR_RATE);
788 PHY_ERR("LENGTH", ATH9K_PHYERR_LENGTH);
789 PHY_ERR("RADAR", ATH9K_PHYERR_RADAR);
790 PHY_ERR("SERVICE", ATH9K_PHYERR_SERVICE);
791 PHY_ERR("TOR", ATH9K_PHYERR_TOR);
792 PHY_ERR("OFDM-TIMING", ATH9K_PHYERR_OFDM_TIMING);
793 PHY_ERR("OFDM-SIGNAL-PARITY", ATH9K_PHYERR_OFDM_SIGNAL_PARITY);
794 PHY_ERR("OFDM-RATE", ATH9K_PHYERR_OFDM_RATE_ILLEGAL);
795 PHY_ERR("OFDM-LENGTH", ATH9K_PHYERR_OFDM_LENGTH_ILLEGAL);
796 PHY_ERR("OFDM-POWER-DROP", ATH9K_PHYERR_OFDM_POWER_DROP);
797 PHY_ERR("OFDM-SERVICE", ATH9K_PHYERR_OFDM_SERVICE);
798 PHY_ERR("OFDM-RESTART", ATH9K_PHYERR_OFDM_RESTART);
799 PHY_ERR("FALSE-RADAR-EXT", ATH9K_PHYERR_FALSE_RADAR_EXT);
800 PHY_ERR("CCK-TIMING", ATH9K_PHYERR_CCK_TIMING);
801 PHY_ERR("CCK-HEADER-CRC", ATH9K_PHYERR_CCK_HEADER_CRC);
802 PHY_ERR("CCK-RATE", ATH9K_PHYERR_CCK_RATE_ILLEGAL);
803 PHY_ERR("CCK-SERVICE", ATH9K_PHYERR_CCK_SERVICE);
804 PHY_ERR("CCK-RESTART", ATH9K_PHYERR_CCK_RESTART);
805 PHY_ERR("CCK-LENGTH", ATH9K_PHYERR_CCK_LENGTH_ILLEGAL);
806 PHY_ERR("CCK-POWER-DROP", ATH9K_PHYERR_CCK_POWER_DROP);
807 PHY_ERR("HT-CRC", ATH9K_PHYERR_HT_CRC_ERROR);
808 PHY_ERR("HT-LENGTH", ATH9K_PHYERR_HT_LENGTH_ILLEGAL);
809 PHY_ERR("HT-RATE", ATH9K_PHYERR_HT_RATE_ILLEGAL);
810
811 if (len > size)
812 len = size;
813
814 retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
815 kfree(buf);
816
817 return retval;
818
819 #undef PHY_ERR
820 }
821
822 void ath_debug_stat_rx(struct ath_softc *sc, struct ath_rx_status *rs)
823 {
824 #define RX_STAT_INC(c) sc->debug.stats.rxstats.c++
825 #define RX_PHY_ERR_INC(c) sc->debug.stats.rxstats.phy_err_stats[c]++
826
827 u32 phyerr;
828
829 if (rs->rs_status & ATH9K_RXERR_CRC)
830 RX_STAT_INC(crc_err);
831 if (rs->rs_status & ATH9K_RXERR_DECRYPT)
832 RX_STAT_INC(decrypt_crc_err);
833 if (rs->rs_status & ATH9K_RXERR_MIC)
834 RX_STAT_INC(mic_err);
835 if (rs->rs_status & ATH9K_RX_DELIM_CRC_PRE)
836 RX_STAT_INC(pre_delim_crc_err);
837 if (rs->rs_status & ATH9K_RX_DELIM_CRC_POST)
838 RX_STAT_INC(post_delim_crc_err);
839 if (rs->rs_status & ATH9K_RX_DECRYPT_BUSY)
840 RX_STAT_INC(decrypt_busy_err);
841
842 if (rs->rs_status & ATH9K_RXERR_PHY) {
843 RX_STAT_INC(phy_err);
844 phyerr = rs->rs_phyerr & 0x24;
845 RX_PHY_ERR_INC(phyerr);
846 }
847
848 #undef RX_STAT_INC
849 #undef RX_PHY_ERR_INC
850 }
851
852 static const struct file_operations fops_recv = {
853 .read = read_file_recv,
854 .open = ath9k_debugfs_open,
855 .owner = THIS_MODULE
856 };
857
858 static ssize_t read_file_regidx(struct file *file, char __user *user_buf,
859 size_t count, loff_t *ppos)
860 {
861 struct ath_softc *sc = file->private_data;
862 char buf[32];
863 unsigned int len;
864
865 len = sprintf(buf, "0x%08x\n", sc->debug.regidx);
866 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
867 }
868
869 static ssize_t write_file_regidx(struct file *file, const char __user *user_buf,
870 size_t count, loff_t *ppos)
871 {
872 struct ath_softc *sc = file->private_data;
873 unsigned long regidx;
874 char buf[32];
875 ssize_t len;
876
877 len = min(count, sizeof(buf) - 1);
878 if (copy_from_user(buf, user_buf, len))
879 return -EFAULT;
880
881 buf[len] = '\0';
882 if (strict_strtoul(buf, 0, &regidx))
883 return -EINVAL;
884
885 sc->debug.regidx = regidx;
886 return count;
887 }
888
889 static const struct file_operations fops_regidx = {
890 .read = read_file_regidx,
891 .write = write_file_regidx,
892 .open = ath9k_debugfs_open,
893 .owner = THIS_MODULE
894 };
895
896 static ssize_t read_file_regval(struct file *file, char __user *user_buf,
897 size_t count, loff_t *ppos)
898 {
899 struct ath_softc *sc = file->private_data;
900 struct ath_hw *ah = sc->sc_ah;
901 char buf[32];
902 unsigned int len;
903 u32 regval;
904
905 regval = REG_READ_D(ah, sc->debug.regidx);
906 len = sprintf(buf, "0x%08x\n", regval);
907 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
908 }
909
910 static ssize_t write_file_regval(struct file *file, const char __user *user_buf,
911 size_t count, loff_t *ppos)
912 {
913 struct ath_softc *sc = file->private_data;
914 struct ath_hw *ah = sc->sc_ah;
915 unsigned long regval;
916 char buf[32];
917 ssize_t len;
918
919 len = min(count, sizeof(buf) - 1);
920 if (copy_from_user(buf, user_buf, len))
921 return -EFAULT;
922
923 buf[len] = '\0';
924 if (strict_strtoul(buf, 0, &regval))
925 return -EINVAL;
926
927 REG_WRITE_D(ah, sc->debug.regidx, regval);
928 return count;
929 }
930
931 static const struct file_operations fops_regval = {
932 .read = read_file_regval,
933 .write = write_file_regval,
934 .open = ath9k_debugfs_open,
935 .owner = THIS_MODULE
936 };
937
938 int ath9k_init_debug(struct ath_hw *ah)
939 {
940 struct ath_common *common = ath9k_hw_common(ah);
941 struct ath_softc *sc = (struct ath_softc *) common->priv;
942
943 if (!ath9k_debugfs_root)
944 return -ENOENT;
945
946 sc->debug.debugfs_phy = debugfs_create_dir(wiphy_name(sc->hw->wiphy),
947 ath9k_debugfs_root);
948 if (!sc->debug.debugfs_phy)
949 return -ENOMEM;
950
951 #ifdef CONFIG_ATH_DEBUG
952 if (!debugfs_create_file("debug", S_IRUSR | S_IWUSR,
953 sc->debug.debugfs_phy, sc, &fops_debug))
954 goto err;
955 #endif
956
957 if (!debugfs_create_file("dma", S_IRUSR, sc->debug.debugfs_phy,
958 sc, &fops_dma))
959 goto err;
960
961 if (!debugfs_create_file("interrupt", S_IRUSR, sc->debug.debugfs_phy,
962 sc, &fops_interrupt))
963 goto err;
964
965 if (!debugfs_create_file("rcstat", S_IRUSR, sc->debug.debugfs_phy,
966 sc, &fops_rcstat))
967 goto err;
968
969 if (!debugfs_create_file("wiphy", S_IRUSR | S_IWUSR,
970 sc->debug.debugfs_phy, sc, &fops_wiphy))
971 goto err;
972
973 if (!debugfs_create_file("xmit", S_IRUSR, sc->debug.debugfs_phy,
974 sc, &fops_xmit))
975 goto err;
976
977 if (!debugfs_create_file("recv", S_IRUSR, sc->debug.debugfs_phy,
978 sc, &fops_recv))
979 goto err;
980
981 if (!debugfs_create_file("rx_chainmask", S_IRUSR | S_IWUSR,
982 sc->debug.debugfs_phy, sc, &fops_rx_chainmask))
983 goto err;
984
985 if (!debugfs_create_file("tx_chainmask", S_IRUSR | S_IWUSR,
986 sc->debug.debugfs_phy, sc, &fops_tx_chainmask))
987 goto err;
988
989 if (!debugfs_create_file("regidx", S_IRUSR | S_IWUSR,
990 sc->debug.debugfs_phy, sc, &fops_regidx))
991 goto err;
992
993 if (!debugfs_create_file("regval", S_IRUSR | S_IWUSR,
994 sc->debug.debugfs_phy, sc, &fops_regval))
995 goto err;
996
997 if (!debugfs_create_bool("ignore_extcca", S_IRUSR | S_IWUSR,
998 sc->debug.debugfs_phy, &ah->config.cwm_ignore_extcca))
999 goto err;
1000
1001 sc->debug.regidx = 0;
1002 return 0;
1003 err:
1004 ath9k_exit_debug(ah);
1005 return -ENOMEM;
1006 }
1007
1008 void ath9k_exit_debug(struct ath_hw *ah)
1009 {
1010 struct ath_common *common = ath9k_hw_common(ah);
1011 struct ath_softc *sc = (struct ath_softc *) common->priv;
1012
1013 debugfs_remove_recursive(sc->debug.debugfs_phy);
1014 }
1015
1016 int ath9k_debug_create_root(void)
1017 {
1018 ath9k_debugfs_root = debugfs_create_dir(KBUILD_MODNAME, NULL);
1019 if (!ath9k_debugfs_root)
1020 return -ENOENT;
1021
1022 return 0;
1023 }
1024
1025 void ath9k_debug_remove_root(void)
1026 {
1027 debugfs_remove(ath9k_debugfs_root);
1028 ath9k_debugfs_root = NULL;
1029 }
Linus' kernel tree