2 * Copyright (c) 2008-2009 Atheros Communications Inc.
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.
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.
17 #include <asm/unaligned.h>
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))
26 static struct dentry *ath9k_debugfs_root;
28 static int ath9k_debugfs_open(struct inode *inode, struct file *file)
30 file->private_data = inode->i_private;
34 #ifdef CONFIG_ATH_DEBUG
36 static ssize_t read_file_debug(struct file *file, char __user *user_buf,
37 size_t count, loff_t *ppos)
39 struct ath_softc *sc = file->private_data;
40 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
44 len = snprintf(buf, sizeof(buf), "0x%08x\n", common->debug_mask);
45 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
48 static ssize_t write_file_debug(struct file *file, const char __user *user_buf,
49 size_t count, loff_t *ppos)
51 struct ath_softc *sc = file->private_data;
52 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
57 len = min(count, sizeof(buf) - 1);
58 if (copy_from_user(buf, user_buf, len))
62 if (strict_strtoul(buf, 0, &mask))
65 common->debug_mask = mask;
69 static const struct file_operations fops_debug = {
70 .read = read_file_debug,
71 .write = write_file_debug,
72 .open = ath9k_debugfs_open,
78 static ssize_t read_file_dma(struct file *file, char __user *user_buf,
79 size_t count, loff_t *ppos)
81 struct ath_softc *sc = file->private_data;
82 struct ath_hw *ah = sc->sc_ah;
85 u32 val[ATH9K_NUM_DMA_DEBUG_REGS];
86 int i, qcuOffset = 0, dcuOffset = 0;
87 u32 *qcuBase = &val[0], *dcuBase = &val[4];
91 REG_WRITE_D(ah, AR_MACMISC,
92 ((AR_MACMISC_DMA_OBS_LINE_8 << AR_MACMISC_DMA_OBS_S) |
93 (AR_MACMISC_MISC_OBS_BUS_1 <<
94 AR_MACMISC_MISC_OBS_BUS_MSB_S)));
96 len += snprintf(buf + len, sizeof(buf) - len,
97 "Raw DMA Debug values:\n");
99 for (i = 0; i < ATH9K_NUM_DMA_DEBUG_REGS; i++) {
101 len += snprintf(buf + len, sizeof(buf) - len, "\n");
103 val[i] = REG_READ_D(ah, AR_DMADBG_0 + (i * sizeof(u32)));
104 len += snprintf(buf + len, sizeof(buf) - len, "%d: %08x ",
108 len += snprintf(buf + len, sizeof(buf) - len, "\n\n");
109 len += snprintf(buf + len, sizeof(buf) - len,
110 "Num QCU: chain_st fsp_ok fsp_st DCU: chain_st\n");
112 for (i = 0; i < ATH9K_NUM_QUEUES; i++, qcuOffset += 4, dcuOffset += 5) {
123 len += snprintf(buf + len, sizeof(buf) - len,
124 "%2d %2x %1x %2x %2x\n",
125 i, (*qcuBase & (0x7 << qcuOffset)) >> qcuOffset,
126 (*qcuBase & (0x8 << qcuOffset)) >> (qcuOffset + 3),
127 val[2] & (0x7 << (i * 3)) >> (i * 3),
128 (*dcuBase & (0x1f << dcuOffset)) >> dcuOffset);
131 len += snprintf(buf + len, sizeof(buf) - len, "\n");
133 len += snprintf(buf + len, sizeof(buf) - len,
134 "qcu_stitch state: %2x qcu_fetch state: %2x\n",
135 (val[3] & 0x003c0000) >> 18, (val[3] & 0x03c00000) >> 22);
136 len += snprintf(buf + len, sizeof(buf) - len,
137 "qcu_complete state: %2x dcu_complete state: %2x\n",
138 (val[3] & 0x1c000000) >> 26, (val[6] & 0x3));
139 len += snprintf(buf + len, sizeof(buf) - len,
140 "dcu_arb state: %2x dcu_fp state: %2x\n",
141 (val[5] & 0x06000000) >> 25, (val[5] & 0x38000000) >> 27);
142 len += snprintf(buf + len, sizeof(buf) - len,
143 "chan_idle_dur: %3d chan_idle_dur_valid: %1d\n",
144 (val[6] & 0x000003fc) >> 2, (val[6] & 0x00000400) >> 10);
145 len += snprintf(buf + len, sizeof(buf) - len,
146 "txfifo_valid_0: %1d txfifo_valid_1: %1d\n",
147 (val[6] & 0x00000800) >> 11, (val[6] & 0x00001000) >> 12);
148 len += snprintf(buf + len, sizeof(buf) - len,
149 "txfifo_dcu_num_0: %2d txfifo_dcu_num_1: %2d\n",
150 (val[6] & 0x0001e000) >> 13, (val[6] & 0x001e0000) >> 17);
152 len += snprintf(buf + len, sizeof(buf) - len, "pcu observe: 0x%x \n",
153 REG_READ_D(ah, AR_OBS_BUS_1));
154 len += snprintf(buf + len, sizeof(buf) - len,
155 "AR_CR: 0x%x \n", REG_READ_D(ah, AR_CR));
157 ath9k_ps_restore(sc);
159 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
162 static const struct file_operations fops_dma = {
163 .read = read_file_dma,
164 .open = ath9k_debugfs_open,
169 void ath_debug_stat_interrupt(struct ath_softc *sc, enum ath9k_int status)
172 sc->debug.stats.istats.total++;
173 if (status & ATH9K_INT_RX)
174 sc->debug.stats.istats.rxok++;
175 if (status & ATH9K_INT_RXEOL)
176 sc->debug.stats.istats.rxeol++;
177 if (status & ATH9K_INT_RXORN)
178 sc->debug.stats.istats.rxorn++;
179 if (status & ATH9K_INT_TX)
180 sc->debug.stats.istats.txok++;
181 if (status & ATH9K_INT_TXURN)
182 sc->debug.stats.istats.txurn++;
183 if (status & ATH9K_INT_MIB)
184 sc->debug.stats.istats.mib++;
185 if (status & ATH9K_INT_RXPHY)
186 sc->debug.stats.istats.rxphyerr++;
187 if (status & ATH9K_INT_RXKCM)
188 sc->debug.stats.istats.rx_keycache_miss++;
189 if (status & ATH9K_INT_SWBA)
190 sc->debug.stats.istats.swba++;
191 if (status & ATH9K_INT_BMISS)
192 sc->debug.stats.istats.bmiss++;
193 if (status & ATH9K_INT_BNR)
194 sc->debug.stats.istats.bnr++;
195 if (status & ATH9K_INT_CST)
196 sc->debug.stats.istats.cst++;
197 if (status & ATH9K_INT_GTT)
198 sc->debug.stats.istats.gtt++;
199 if (status & ATH9K_INT_TIM)
200 sc->debug.stats.istats.tim++;
201 if (status & ATH9K_INT_CABEND)
202 sc->debug.stats.istats.cabend++;
203 if (status & ATH9K_INT_DTIMSYNC)
204 sc->debug.stats.istats.dtimsync++;
205 if (status & ATH9K_INT_DTIM)
206 sc->debug.stats.istats.dtim++;
209 static ssize_t read_file_interrupt(struct file *file, char __user *user_buf,
210 size_t count, loff_t *ppos)
212 struct ath_softc *sc = file->private_data;
214 unsigned int len = 0;
216 len += snprintf(buf + len, sizeof(buf) - len,
217 "%8s: %10u\n", "RX", sc->debug.stats.istats.rxok);
218 len += snprintf(buf + len, sizeof(buf) - len,
219 "%8s: %10u\n", "RXEOL", sc->debug.stats.istats.rxeol);
220 len += snprintf(buf + len, sizeof(buf) - len,
221 "%8s: %10u\n", "RXORN", sc->debug.stats.istats.rxorn);
222 len += snprintf(buf + len, sizeof(buf) - len,
223 "%8s: %10u\n", "TX", sc->debug.stats.istats.txok);
224 len += snprintf(buf + len, sizeof(buf) - len,
225 "%8s: %10u\n", "TXURN", sc->debug.stats.istats.txurn);
226 len += snprintf(buf + len, sizeof(buf) - len,
227 "%8s: %10u\n", "MIB", sc->debug.stats.istats.mib);
228 len += snprintf(buf + len, sizeof(buf) - len,
229 "%8s: %10u\n", "RXPHY", sc->debug.stats.istats.rxphyerr);
230 len += snprintf(buf + len, sizeof(buf) - len,
231 "%8s: %10u\n", "RXKCM", sc->debug.stats.istats.rx_keycache_miss);
232 len += snprintf(buf + len, sizeof(buf) - len,
233 "%8s: %10u\n", "SWBA", sc->debug.stats.istats.swba);
234 len += snprintf(buf + len, sizeof(buf) - len,
235 "%8s: %10u\n", "BMISS", sc->debug.stats.istats.bmiss);
236 len += snprintf(buf + len, sizeof(buf) - len,
237 "%8s: %10u\n", "BNR", sc->debug.stats.istats.bnr);
238 len += snprintf(buf + len, sizeof(buf) - len,
239 "%8s: %10u\n", "CST", sc->debug.stats.istats.cst);
240 len += snprintf(buf + len, sizeof(buf) - len,
241 "%8s: %10u\n", "GTT", sc->debug.stats.istats.gtt);
242 len += snprintf(buf + len, sizeof(buf) - len,
243 "%8s: %10u\n", "TIM", sc->debug.stats.istats.tim);
244 len += snprintf(buf + len, sizeof(buf) - len,
245 "%8s: %10u\n", "CABEND", sc->debug.stats.istats.cabend);
246 len += snprintf(buf + len, sizeof(buf) - len,
247 "%8s: %10u\n", "DTIMSYNC", sc->debug.stats.istats.dtimsync);
248 len += snprintf(buf + len, sizeof(buf) - len,
249 "%8s: %10u\n", "DTIM", sc->debug.stats.istats.dtim);
250 len += snprintf(buf + len, sizeof(buf) - len,
251 "%8s: %10u\n", "TOTAL", sc->debug.stats.istats.total);
253 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
256 static const struct file_operations fops_interrupt = {
257 .read = read_file_interrupt,
258 .open = ath9k_debugfs_open,
262 void ath_debug_stat_rc(struct ath_softc *sc, int final_rate)
264 struct ath_rc_stats *stats;
266 stats = &sc->debug.stats.rcstats[final_rate];
270 void ath_debug_stat_retries(struct ath_softc *sc, int rix,
271 int xretries, int retries, u8 per)
273 struct ath_rc_stats *stats = &sc->debug.stats.rcstats[rix];
275 stats->xretries += xretries;
276 stats->retries += retries;
280 static ssize_t read_file_rcstat(struct file *file, char __user *user_buf,
281 size_t count, loff_t *ppos)
283 struct ath_softc *sc = file->private_data;
285 unsigned int len = 0, max;
289 if (sc->cur_rate_table == NULL)
292 max = 80 + sc->cur_rate_table->rate_cnt * 64;
293 buf = kmalloc(max + 1, GFP_KERNEL);
298 len += sprintf(buf, "%5s %15s %8s %9s %3s\n\n", "Rate", "Success",
299 "Retries", "XRetries", "PER");
301 for (i = 0; i < sc->cur_rate_table->rate_cnt; i++) {
302 u32 ratekbps = sc->cur_rate_table->info[i].ratekbps;
303 struct ath_rc_stats *stats = &sc->debug.stats.rcstats[i];
305 len += snprintf(buf + len, max - len,
306 "%3u.%d: %8u %8u %8u %8u\n", ratekbps / 1000,
307 (ratekbps % 1000) / 100, stats->success,
308 stats->retries, stats->xretries,
312 retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
317 static const struct file_operations fops_rcstat = {
318 .read = read_file_rcstat,
319 .open = ath9k_debugfs_open,
323 static const char * ath_wiphy_state_str(enum ath_wiphy_state state)
326 case ATH_WIPHY_INACTIVE:
328 case ATH_WIPHY_ACTIVE:
330 case ATH_WIPHY_PAUSING:
332 case ATH_WIPHY_PAUSED:
340 static ssize_t read_file_wiphy(struct file *file, char __user *user_buf,
341 size_t count, loff_t *ppos)
343 struct ath_softc *sc = file->private_data;
345 unsigned int len = 0;
349 len += snprintf(buf + len, sizeof(buf) - len,
350 "primary: %s (%s chan=%d ht=%d)\n",
351 wiphy_name(sc->pri_wiphy->hw->wiphy),
352 ath_wiphy_state_str(sc->pri_wiphy->state),
353 sc->pri_wiphy->chan_idx, sc->pri_wiphy->chan_is_ht);
354 for (i = 0; i < sc->num_sec_wiphy; i++) {
355 struct ath_wiphy *aphy = sc->sec_wiphy[i];
358 len += snprintf(buf + len, sizeof(buf) - len,
359 "secondary: %s (%s chan=%d ht=%d)\n",
360 wiphy_name(aphy->hw->wiphy),
361 ath_wiphy_state_str(aphy->state),
362 aphy->chan_idx, aphy->chan_is_ht);
365 put_unaligned_le32(REG_READ_D(sc->sc_ah, AR_STA_ID0), addr);
366 put_unaligned_le16(REG_READ_D(sc->sc_ah, AR_STA_ID1) & 0xffff, addr + 4);
367 len += snprintf(buf + len, sizeof(buf) - len,
368 "addr: %pM\n", addr);
369 put_unaligned_le32(REG_READ_D(sc->sc_ah, AR_BSSMSKL), addr);
370 put_unaligned_le16(REG_READ_D(sc->sc_ah, AR_BSSMSKU) & 0xffff, addr + 4);
371 len += snprintf(buf + len, sizeof(buf) - len,
372 "addrmask: %pM\n", addr);
374 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
377 static struct ath_wiphy * get_wiphy(struct ath_softc *sc, const char *name)
380 if (strcmp(name, wiphy_name(sc->pri_wiphy->hw->wiphy)) == 0)
381 return sc->pri_wiphy;
382 for (i = 0; i < sc->num_sec_wiphy; i++) {
383 struct ath_wiphy *aphy = sc->sec_wiphy[i];
384 if (aphy && strcmp(name, wiphy_name(aphy->hw->wiphy)) == 0)
390 static int del_wiphy(struct ath_softc *sc, const char *name)
392 struct ath_wiphy *aphy = get_wiphy(sc, name);
395 return ath9k_wiphy_del(aphy);
398 static int pause_wiphy(struct ath_softc *sc, const char *name)
400 struct ath_wiphy *aphy = get_wiphy(sc, name);
403 return ath9k_wiphy_pause(aphy);
406 static int unpause_wiphy(struct ath_softc *sc, const char *name)
408 struct ath_wiphy *aphy = get_wiphy(sc, name);
411 return ath9k_wiphy_unpause(aphy);
414 static int select_wiphy(struct ath_softc *sc, const char *name)
416 struct ath_wiphy *aphy = get_wiphy(sc, name);
419 return ath9k_wiphy_select(aphy);
422 static int schedule_wiphy(struct ath_softc *sc, const char *msec)
424 ath9k_wiphy_set_scheduler(sc, simple_strtoul(msec, NULL, 0));
428 static ssize_t write_file_wiphy(struct file *file, const char __user *user_buf,
429 size_t count, loff_t *ppos)
431 struct ath_softc *sc = file->private_data;
435 len = min(count, sizeof(buf) - 1);
436 if (copy_from_user(buf, user_buf, len))
439 if (len > 0 && buf[len - 1] == '\n')
442 if (strncmp(buf, "add", 3) == 0) {
443 int res = ath9k_wiphy_add(sc);
446 } else if (strncmp(buf, "del=", 4) == 0) {
447 int res = del_wiphy(sc, buf + 4);
450 } else if (strncmp(buf, "pause=", 6) == 0) {
451 int res = pause_wiphy(sc, buf + 6);
454 } else if (strncmp(buf, "unpause=", 8) == 0) {
455 int res = unpause_wiphy(sc, buf + 8);
458 } else if (strncmp(buf, "select=", 7) == 0) {
459 int res = select_wiphy(sc, buf + 7);
462 } else if (strncmp(buf, "schedule=", 9) == 0) {
463 int res = schedule_wiphy(sc, buf + 9);
472 static const struct file_operations fops_wiphy = {
473 .read = read_file_wiphy,
474 .write = write_file_wiphy,
475 .open = ath9k_debugfs_open,
479 #define PR(str, elem) \
481 len += snprintf(buf + len, size - len, \
482 "%s%13u%11u%10u%10u\n", str, \
483 sc->debug.stats.txstats[sc->tx.hwq_map[ATH9K_WME_AC_BE]].elem, \
484 sc->debug.stats.txstats[sc->tx.hwq_map[ATH9K_WME_AC_BK]].elem, \
485 sc->debug.stats.txstats[sc->tx.hwq_map[ATH9K_WME_AC_VI]].elem, \
486 sc->debug.stats.txstats[sc->tx.hwq_map[ATH9K_WME_AC_VO]].elem); \
489 static ssize_t read_file_xmit(struct file *file, char __user *user_buf,
490 size_t count, loff_t *ppos)
492 struct ath_softc *sc = file->private_data;
494 unsigned int len = 0, size = 2048;
497 buf = kzalloc(size, GFP_KERNEL);
501 len += sprintf(buf, "%30s %10s%10s%10s\n\n", "BE", "BK", "VI", "VO");
503 PR("MPDUs Queued: ", queued);
504 PR("MPDUs Completed: ", completed);
505 PR("Aggregates: ", a_aggr);
506 PR("AMPDUs Queued: ", a_queued);
507 PR("AMPDUs Completed:", a_completed);
508 PR("AMPDUs Retried: ", a_retries);
509 PR("AMPDUs XRetried: ", a_xretries);
510 PR("FIFO Underrun: ", fifo_underrun);
511 PR("TXOP Exceeded: ", xtxop);
512 PR("TXTIMER Expiry: ", timer_exp);
513 PR("DESC CFG Error: ", desc_cfg_err);
514 PR("DATA Underrun: ", data_underrun);
515 PR("DELIM Underrun: ", delim_underrun);
517 retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
523 void ath_debug_stat_tx(struct ath_softc *sc, struct ath_txq *txq,
526 struct ath_desc *ds = bf->bf_desc;
528 if (bf_isampdu(bf)) {
529 if (bf_isxretried(bf))
530 TX_STAT_INC(txq->axq_qnum, a_xretries);
532 TX_STAT_INC(txq->axq_qnum, a_completed);
534 TX_STAT_INC(txq->axq_qnum, completed);
537 if (ds->ds_txstat.ts_status & ATH9K_TXERR_FIFO)
538 TX_STAT_INC(txq->axq_qnum, fifo_underrun);
539 if (ds->ds_txstat.ts_status & ATH9K_TXERR_XTXOP)
540 TX_STAT_INC(txq->axq_qnum, xtxop);
541 if (ds->ds_txstat.ts_status & ATH9K_TXERR_TIMER_EXPIRED)
542 TX_STAT_INC(txq->axq_qnum, timer_exp);
543 if (ds->ds_txstat.ts_flags & ATH9K_TX_DESC_CFG_ERR)
544 TX_STAT_INC(txq->axq_qnum, desc_cfg_err);
545 if (ds->ds_txstat.ts_flags & ATH9K_TX_DATA_UNDERRUN)
546 TX_STAT_INC(txq->axq_qnum, data_underrun);
547 if (ds->ds_txstat.ts_flags & ATH9K_TX_DELIM_UNDERRUN)
548 TX_STAT_INC(txq->axq_qnum, delim_underrun);
551 static const struct file_operations fops_xmit = {
552 .read = read_file_xmit,
553 .open = ath9k_debugfs_open,
557 int ath9k_init_debug(struct ath_hw *ah)
559 struct ath_common *common = ath9k_hw_common(ah);
560 struct ath_softc *sc = (struct ath_softc *) common->priv;
562 if (!ath9k_debugfs_root)
565 sc->debug.debugfs_phy = debugfs_create_dir(wiphy_name(sc->hw->wiphy),
567 if (!sc->debug.debugfs_phy)
570 #ifdef CONFIG_ATH_DEBUG
571 sc->debug.debugfs_debug = debugfs_create_file("debug",
572 S_IRUSR | S_IWUSR, sc->debug.debugfs_phy, sc, &fops_debug);
573 if (!sc->debug.debugfs_debug)
577 sc->debug.debugfs_dma = debugfs_create_file("dma", S_IRUSR,
578 sc->debug.debugfs_phy, sc, &fops_dma);
579 if (!sc->debug.debugfs_dma)
582 sc->debug.debugfs_interrupt = debugfs_create_file("interrupt",
584 sc->debug.debugfs_phy,
585 sc, &fops_interrupt);
586 if (!sc->debug.debugfs_interrupt)
589 sc->debug.debugfs_rcstat = debugfs_create_file("rcstat",
591 sc->debug.debugfs_phy,
593 if (!sc->debug.debugfs_rcstat)
596 sc->debug.debugfs_wiphy = debugfs_create_file(
597 "wiphy", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy, sc,
599 if (!sc->debug.debugfs_wiphy)
602 sc->debug.debugfs_xmit = debugfs_create_file("xmit",
604 sc->debug.debugfs_phy,
606 if (!sc->debug.debugfs_xmit)
611 ath9k_exit_debug(ah);
615 void ath9k_exit_debug(struct ath_hw *ah)
617 struct ath_common *common = ath9k_hw_common(ah);
618 struct ath_softc *sc = (struct ath_softc *) common->priv;
620 debugfs_remove(sc->debug.debugfs_xmit);
621 debugfs_remove(sc->debug.debugfs_wiphy);
622 debugfs_remove(sc->debug.debugfs_rcstat);
623 debugfs_remove(sc->debug.debugfs_interrupt);
624 debugfs_remove(sc->debug.debugfs_dma);
625 debugfs_remove(sc->debug.debugfs_debug);
626 debugfs_remove(sc->debug.debugfs_phy);
629 int ath9k_debug_create_root(void)
631 ath9k_debugfs_root = debugfs_create_dir(KBUILD_MODNAME, NULL);
632 if (!ath9k_debugfs_root)
638 void ath9k_debug_remove_root(void)
640 debugfs_remove(ath9k_debugfs_root);
641 ath9k_debugfs_root = NULL;