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 static unsigned int ath9k_debug = ATH_DBG_DEFAULT;
22 module_param_named(debug, ath9k_debug, uint, 0);
24 static struct dentry *ath9k_debugfs_root;
26 static int ath9k_debugfs_open(struct inode *inode, struct file *file)
28 file->private_data = inode->i_private;
32 static ssize_t read_file_debug(struct file *file, char __user *user_buf,
33 size_t count, loff_t *ppos)
35 struct ath_softc *sc = file->private_data;
36 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
40 len = snprintf(buf, sizeof(buf), "0x%08x\n", common->debug_mask);
41 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
44 static ssize_t write_file_debug(struct file *file, const char __user *user_buf,
45 size_t count, loff_t *ppos)
47 struct ath_softc *sc = file->private_data;
48 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
53 len = min(count, sizeof(buf) - 1);
54 if (copy_from_user(buf, user_buf, len))
58 if (strict_strtoul(buf, 0, &mask))
61 common->debug_mask = mask;
65 static const struct file_operations fops_debug = {
66 .read = read_file_debug,
67 .write = write_file_debug,
68 .open = ath9k_debugfs_open,
72 static ssize_t read_file_dma(struct file *file, char __user *user_buf,
73 size_t count, loff_t *ppos)
75 struct ath_softc *sc = file->private_data;
76 struct ath_hw *ah = sc->sc_ah;
79 u32 val[ATH9K_NUM_DMA_DEBUG_REGS];
80 int i, qcuOffset = 0, dcuOffset = 0;
81 u32 *qcuBase = &val[0], *dcuBase = &val[4];
85 REG_WRITE(ah, AR_MACMISC,
86 ((AR_MACMISC_DMA_OBS_LINE_8 << AR_MACMISC_DMA_OBS_S) |
87 (AR_MACMISC_MISC_OBS_BUS_1 <<
88 AR_MACMISC_MISC_OBS_BUS_MSB_S)));
90 len += snprintf(buf + len, sizeof(buf) - len,
91 "Raw DMA Debug values:\n");
93 for (i = 0; i < ATH9K_NUM_DMA_DEBUG_REGS; i++) {
95 len += snprintf(buf + len, sizeof(buf) - len, "\n");
97 val[i] = REG_READ(ah, AR_DMADBG_0 + (i * sizeof(u32)));
98 len += snprintf(buf + len, sizeof(buf) - len, "%d: %08x ",
102 len += snprintf(buf + len, sizeof(buf) - len, "\n\n");
103 len += snprintf(buf + len, sizeof(buf) - len,
104 "Num QCU: chain_st fsp_ok fsp_st DCU: chain_st\n");
106 for (i = 0; i < ATH9K_NUM_QUEUES; i++, qcuOffset += 4, dcuOffset += 5) {
117 len += snprintf(buf + len, sizeof(buf) - len,
118 "%2d %2x %1x %2x %2x\n",
119 i, (*qcuBase & (0x7 << qcuOffset)) >> qcuOffset,
120 (*qcuBase & (0x8 << qcuOffset)) >> (qcuOffset + 3),
121 val[2] & (0x7 << (i * 3)) >> (i * 3),
122 (*dcuBase & (0x1f << dcuOffset)) >> dcuOffset);
125 len += snprintf(buf + len, sizeof(buf) - len, "\n");
127 len += snprintf(buf + len, sizeof(buf) - len,
128 "qcu_stitch state: %2x qcu_fetch state: %2x\n",
129 (val[3] & 0x003c0000) >> 18, (val[3] & 0x03c00000) >> 22);
130 len += snprintf(buf + len, sizeof(buf) - len,
131 "qcu_complete state: %2x dcu_complete state: %2x\n",
132 (val[3] & 0x1c000000) >> 26, (val[6] & 0x3));
133 len += snprintf(buf + len, sizeof(buf) - len,
134 "dcu_arb state: %2x dcu_fp state: %2x\n",
135 (val[5] & 0x06000000) >> 25, (val[5] & 0x38000000) >> 27);
136 len += snprintf(buf + len, sizeof(buf) - len,
137 "chan_idle_dur: %3d chan_idle_dur_valid: %1d\n",
138 (val[6] & 0x000003fc) >> 2, (val[6] & 0x00000400) >> 10);
139 len += snprintf(buf + len, sizeof(buf) - len,
140 "txfifo_valid_0: %1d txfifo_valid_1: %1d\n",
141 (val[6] & 0x00000800) >> 11, (val[6] & 0x00001000) >> 12);
142 len += snprintf(buf + len, sizeof(buf) - len,
143 "txfifo_dcu_num_0: %2d txfifo_dcu_num_1: %2d\n",
144 (val[6] & 0x0001e000) >> 13, (val[6] & 0x001e0000) >> 17);
146 len += snprintf(buf + len, sizeof(buf) - len, "pcu observe: 0x%x \n",
147 REG_READ(ah, AR_OBS_BUS_1));
148 len += snprintf(buf + len, sizeof(buf) - len,
149 "AR_CR: 0x%x \n", REG_READ(ah, AR_CR));
151 ath9k_ps_restore(sc);
153 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
156 static const struct file_operations fops_dma = {
157 .read = read_file_dma,
158 .open = ath9k_debugfs_open,
163 void ath_debug_stat_interrupt(struct ath_softc *sc, enum ath9k_int status)
166 sc->debug.stats.istats.total++;
167 if (status & ATH9K_INT_RX)
168 sc->debug.stats.istats.rxok++;
169 if (status & ATH9K_INT_RXEOL)
170 sc->debug.stats.istats.rxeol++;
171 if (status & ATH9K_INT_RXORN)
172 sc->debug.stats.istats.rxorn++;
173 if (status & ATH9K_INT_TX)
174 sc->debug.stats.istats.txok++;
175 if (status & ATH9K_INT_TXURN)
176 sc->debug.stats.istats.txurn++;
177 if (status & ATH9K_INT_MIB)
178 sc->debug.stats.istats.mib++;
179 if (status & ATH9K_INT_RXPHY)
180 sc->debug.stats.istats.rxphyerr++;
181 if (status & ATH9K_INT_RXKCM)
182 sc->debug.stats.istats.rx_keycache_miss++;
183 if (status & ATH9K_INT_SWBA)
184 sc->debug.stats.istats.swba++;
185 if (status & ATH9K_INT_BMISS)
186 sc->debug.stats.istats.bmiss++;
187 if (status & ATH9K_INT_BNR)
188 sc->debug.stats.istats.bnr++;
189 if (status & ATH9K_INT_CST)
190 sc->debug.stats.istats.cst++;
191 if (status & ATH9K_INT_GTT)
192 sc->debug.stats.istats.gtt++;
193 if (status & ATH9K_INT_TIM)
194 sc->debug.stats.istats.tim++;
195 if (status & ATH9K_INT_CABEND)
196 sc->debug.stats.istats.cabend++;
197 if (status & ATH9K_INT_DTIMSYNC)
198 sc->debug.stats.istats.dtimsync++;
199 if (status & ATH9K_INT_DTIM)
200 sc->debug.stats.istats.dtim++;
203 static ssize_t read_file_interrupt(struct file *file, char __user *user_buf,
204 size_t count, loff_t *ppos)
206 struct ath_softc *sc = file->private_data;
208 unsigned int len = 0;
210 len += snprintf(buf + len, sizeof(buf) - len,
211 "%8s: %10u\n", "RX", sc->debug.stats.istats.rxok);
212 len += snprintf(buf + len, sizeof(buf) - len,
213 "%8s: %10u\n", "RXEOL", sc->debug.stats.istats.rxeol);
214 len += snprintf(buf + len, sizeof(buf) - len,
215 "%8s: %10u\n", "RXORN", sc->debug.stats.istats.rxorn);
216 len += snprintf(buf + len, sizeof(buf) - len,
217 "%8s: %10u\n", "TX", sc->debug.stats.istats.txok);
218 len += snprintf(buf + len, sizeof(buf) - len,
219 "%8s: %10u\n", "TXURN", sc->debug.stats.istats.txurn);
220 len += snprintf(buf + len, sizeof(buf) - len,
221 "%8s: %10u\n", "MIB", sc->debug.stats.istats.mib);
222 len += snprintf(buf + len, sizeof(buf) - len,
223 "%8s: %10u\n", "RXPHY", sc->debug.stats.istats.rxphyerr);
224 len += snprintf(buf + len, sizeof(buf) - len,
225 "%8s: %10u\n", "RXKCM", sc->debug.stats.istats.rx_keycache_miss);
226 len += snprintf(buf + len, sizeof(buf) - len,
227 "%8s: %10u\n", "SWBA", sc->debug.stats.istats.swba);
228 len += snprintf(buf + len, sizeof(buf) - len,
229 "%8s: %10u\n", "BMISS", sc->debug.stats.istats.bmiss);
230 len += snprintf(buf + len, sizeof(buf) - len,
231 "%8s: %10u\n", "BNR", sc->debug.stats.istats.bnr);
232 len += snprintf(buf + len, sizeof(buf) - len,
233 "%8s: %10u\n", "CST", sc->debug.stats.istats.cst);
234 len += snprintf(buf + len, sizeof(buf) - len,
235 "%8s: %10u\n", "GTT", sc->debug.stats.istats.gtt);
236 len += snprintf(buf + len, sizeof(buf) - len,
237 "%8s: %10u\n", "TIM", sc->debug.stats.istats.tim);
238 len += snprintf(buf + len, sizeof(buf) - len,
239 "%8s: %10u\n", "CABEND", sc->debug.stats.istats.cabend);
240 len += snprintf(buf + len, sizeof(buf) - len,
241 "%8s: %10u\n", "DTIMSYNC", sc->debug.stats.istats.dtimsync);
242 len += snprintf(buf + len, sizeof(buf) - len,
243 "%8s: %10u\n", "DTIM", sc->debug.stats.istats.dtim);
244 len += snprintf(buf + len, sizeof(buf) - len,
245 "%8s: %10u\n", "TOTAL", sc->debug.stats.istats.total);
247 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
250 static const struct file_operations fops_interrupt = {
251 .read = read_file_interrupt,
252 .open = ath9k_debugfs_open,
256 void ath_debug_stat_rc(struct ath_softc *sc, struct sk_buff *skb)
258 struct ath_tx_info_priv *tx_info_priv = NULL;
259 struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
260 struct ieee80211_tx_rate *rates = tx_info->status.rates;
261 int final_ts_idx, idx;
262 struct ath_rc_stats *stats;
264 tx_info_priv = ATH_TX_INFO_PRIV(tx_info);
265 final_ts_idx = tx_info_priv->tx.ts_rateindex;
266 idx = rates[final_ts_idx].idx;
267 stats = &sc->debug.stats.rcstats[idx];
271 void ath_debug_stat_retries(struct ath_softc *sc, int rix,
272 int xretries, int retries, u8 per)
274 struct ath_rc_stats *stats = &sc->debug.stats.rcstats[rix];
276 stats->xretries += xretries;
277 stats->retries += retries;
281 static ssize_t read_file_rcstat(struct file *file, char __user *user_buf,
282 size_t count, loff_t *ppos)
284 struct ath_softc *sc = file->private_data;
286 unsigned int len = 0, max;
290 if (sc->cur_rate_table == NULL)
293 max = 80 + sc->cur_rate_table->rate_cnt * 64;
294 buf = kmalloc(max + 1, GFP_KERNEL);
299 len += sprintf(buf, "%5s %15s %8s %9s %3s\n\n", "Rate", "Success",
300 "Retries", "XRetries", "PER");
302 for (i = 0; i < sc->cur_rate_table->rate_cnt; i++) {
303 u32 ratekbps = sc->cur_rate_table->info[i].ratekbps;
304 struct ath_rc_stats *stats = &sc->debug.stats.rcstats[i];
306 len += snprintf(buf + len, max - len,
307 "%3u.%d: %8u %8u %8u %8u\n", ratekbps / 1000,
308 (ratekbps % 1000) / 100, stats->success,
309 stats->retries, stats->xretries,
313 retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
318 static const struct file_operations fops_rcstat = {
319 .read = read_file_rcstat,
320 .open = ath9k_debugfs_open,
324 static const char * ath_wiphy_state_str(enum ath_wiphy_state state)
327 case ATH_WIPHY_INACTIVE:
329 case ATH_WIPHY_ACTIVE:
331 case ATH_WIPHY_PAUSING:
333 case ATH_WIPHY_PAUSED:
341 static ssize_t read_file_wiphy(struct file *file, char __user *user_buf,
342 size_t count, loff_t *ppos)
344 struct ath_softc *sc = file->private_data;
346 unsigned int len = 0;
350 len += snprintf(buf + len, sizeof(buf) - len,
351 "primary: %s (%s chan=%d ht=%d)\n",
352 wiphy_name(sc->pri_wiphy->hw->wiphy),
353 ath_wiphy_state_str(sc->pri_wiphy->state),
354 sc->pri_wiphy->chan_idx, sc->pri_wiphy->chan_is_ht);
355 for (i = 0; i < sc->num_sec_wiphy; i++) {
356 struct ath_wiphy *aphy = sc->sec_wiphy[i];
359 len += snprintf(buf + len, sizeof(buf) - len,
360 "secondary: %s (%s chan=%d ht=%d)\n",
361 wiphy_name(aphy->hw->wiphy),
362 ath_wiphy_state_str(aphy->state),
363 aphy->chan_idx, aphy->chan_is_ht);
366 put_unaligned_le32(REG_READ(sc->sc_ah, AR_STA_ID0), addr);
367 put_unaligned_le16(REG_READ(sc->sc_ah, AR_STA_ID1) & 0xffff, addr + 4);
368 len += snprintf(buf + len, sizeof(buf) - len,
369 "addr: %pM\n", addr);
370 put_unaligned_le32(REG_READ(sc->sc_ah, AR_BSSMSKL), addr);
371 put_unaligned_le16(REG_READ(sc->sc_ah, AR_BSSMSKU) & 0xffff, addr + 4);
372 len += snprintf(buf + len, sizeof(buf) - len,
373 "addrmask: %pM\n", addr);
375 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
378 static struct ath_wiphy * get_wiphy(struct ath_softc *sc, const char *name)
381 if (strcmp(name, wiphy_name(sc->pri_wiphy->hw->wiphy)) == 0)
382 return sc->pri_wiphy;
383 for (i = 0; i < sc->num_sec_wiphy; i++) {
384 struct ath_wiphy *aphy = sc->sec_wiphy[i];
385 if (aphy && strcmp(name, wiphy_name(aphy->hw->wiphy)) == 0)
391 static int del_wiphy(struct ath_softc *sc, const char *name)
393 struct ath_wiphy *aphy = get_wiphy(sc, name);
396 return ath9k_wiphy_del(aphy);
399 static int pause_wiphy(struct ath_softc *sc, const char *name)
401 struct ath_wiphy *aphy = get_wiphy(sc, name);
404 return ath9k_wiphy_pause(aphy);
407 static int unpause_wiphy(struct ath_softc *sc, const char *name)
409 struct ath_wiphy *aphy = get_wiphy(sc, name);
412 return ath9k_wiphy_unpause(aphy);
415 static int select_wiphy(struct ath_softc *sc, const char *name)
417 struct ath_wiphy *aphy = get_wiphy(sc, name);
420 return ath9k_wiphy_select(aphy);
423 static int schedule_wiphy(struct ath_softc *sc, const char *msec)
425 ath9k_wiphy_set_scheduler(sc, simple_strtoul(msec, NULL, 0));
429 static ssize_t write_file_wiphy(struct file *file, const char __user *user_buf,
430 size_t count, loff_t *ppos)
432 struct ath_softc *sc = file->private_data;
436 len = min(count, sizeof(buf) - 1);
437 if (copy_from_user(buf, user_buf, len))
440 if (len > 0 && buf[len - 1] == '\n')
443 if (strncmp(buf, "add", 3) == 0) {
444 int res = ath9k_wiphy_add(sc);
447 } else if (strncmp(buf, "del=", 4) == 0) {
448 int res = del_wiphy(sc, buf + 4);
451 } else if (strncmp(buf, "pause=", 6) == 0) {
452 int res = pause_wiphy(sc, buf + 6);
455 } else if (strncmp(buf, "unpause=", 8) == 0) {
456 int res = unpause_wiphy(sc, buf + 8);
459 } else if (strncmp(buf, "select=", 7) == 0) {
460 int res = select_wiphy(sc, buf + 7);
463 } else if (strncmp(buf, "schedule=", 9) == 0) {
464 int res = schedule_wiphy(sc, buf + 9);
473 static const struct file_operations fops_wiphy = {
474 .read = read_file_wiphy,
475 .write = write_file_wiphy,
476 .open = ath9k_debugfs_open,
480 #define PR(str, elem) \
482 len += snprintf(buf + len, size - len, \
483 "%s%13u%11u%10u%10u\n", str, \
484 sc->debug.stats.txstats[sc->tx.hwq_map[ATH9K_WME_AC_BE]].elem, \
485 sc->debug.stats.txstats[sc->tx.hwq_map[ATH9K_WME_AC_BK]].elem, \
486 sc->debug.stats.txstats[sc->tx.hwq_map[ATH9K_WME_AC_VI]].elem, \
487 sc->debug.stats.txstats[sc->tx.hwq_map[ATH9K_WME_AC_VO]].elem); \
490 static ssize_t read_file_xmit(struct file *file, char __user *user_buf,
491 size_t count, loff_t *ppos)
493 struct ath_softc *sc = file->private_data;
495 unsigned int len = 0, size = 2048;
498 buf = kzalloc(size, GFP_KERNEL);
502 len += sprintf(buf, "%30s %10s%10s%10s\n\n", "BE", "BK", "VI", "VO");
504 PR("MPDUs Queued: ", queued);
505 PR("MPDUs Completed: ", completed);
506 PR("Aggregates: ", a_aggr);
507 PR("AMPDUs Queued: ", a_queued);
508 PR("AMPDUs Completed:", a_completed);
509 PR("AMPDUs Retried: ", a_retries);
510 PR("AMPDUs XRetried: ", a_xretries);
511 PR("FIFO Underrun: ", fifo_underrun);
512 PR("TXOP Exceeded: ", xtxop);
513 PR("TXTIMER Expiry: ", timer_exp);
514 PR("DESC CFG Error: ", desc_cfg_err);
515 PR("DATA Underrun: ", data_underrun);
516 PR("DELIM Underrun: ", delim_underrun);
518 retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
524 void ath_debug_stat_tx(struct ath_softc *sc, struct ath_txq *txq,
527 struct ath_desc *ds = bf->bf_desc;
529 if (bf_isampdu(bf)) {
530 if (bf_isxretried(bf))
531 TX_STAT_INC(txq->axq_qnum, a_xretries);
533 TX_STAT_INC(txq->axq_qnum, a_completed);
535 TX_STAT_INC(txq->axq_qnum, completed);
538 if (ds->ds_txstat.ts_status & ATH9K_TXERR_FIFO)
539 TX_STAT_INC(txq->axq_qnum, fifo_underrun);
540 if (ds->ds_txstat.ts_status & ATH9K_TXERR_XTXOP)
541 TX_STAT_INC(txq->axq_qnum, xtxop);
542 if (ds->ds_txstat.ts_status & ATH9K_TXERR_TIMER_EXPIRED)
543 TX_STAT_INC(txq->axq_qnum, timer_exp);
544 if (ds->ds_txstat.ts_flags & ATH9K_TX_DESC_CFG_ERR)
545 TX_STAT_INC(txq->axq_qnum, desc_cfg_err);
546 if (ds->ds_txstat.ts_flags & ATH9K_TX_DATA_UNDERRUN)
547 TX_STAT_INC(txq->axq_qnum, data_underrun);
548 if (ds->ds_txstat.ts_flags & ATH9K_TX_DELIM_UNDERRUN)
549 TX_STAT_INC(txq->axq_qnum, delim_underrun);
552 static const struct file_operations fops_xmit = {
553 .read = read_file_xmit,
554 .open = ath9k_debugfs_open,
558 int ath9k_init_debug(struct ath_hw *ah)
560 struct ath_softc *sc = ah->ah_sc;
561 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
563 common->debug_mask = ath9k_debug;
565 if (!ath9k_debugfs_root)
568 sc->debug.debugfs_phy = debugfs_create_dir(wiphy_name(sc->hw->wiphy),
570 if (!sc->debug.debugfs_phy)
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)
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)
583 sc->debug.debugfs_interrupt = debugfs_create_file("interrupt",
585 sc->debug.debugfs_phy,
586 sc, &fops_interrupt);
587 if (!sc->debug.debugfs_interrupt)
590 sc->debug.debugfs_rcstat = debugfs_create_file("rcstat",
592 sc->debug.debugfs_phy,
594 if (!sc->debug.debugfs_rcstat)
597 sc->debug.debugfs_wiphy = debugfs_create_file(
598 "wiphy", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy, sc,
600 if (!sc->debug.debugfs_wiphy)
603 sc->debug.debugfs_xmit = debugfs_create_file("xmit",
605 sc->debug.debugfs_phy,
607 if (!sc->debug.debugfs_xmit)
612 ath9k_exit_debug(ah);
616 void ath9k_exit_debug(struct ath_hw *ah)
618 struct ath_softc *sc = ah->ah_sc;
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;