1 /*
2  * Copyright (c) 2008-2011 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 <linux/vmalloc.h>
19 #include <linux/export.h>
20 #include <asm/unaligned.h>
21 
22 #include "ath9k.h"
23 
24 #define REG_WRITE_D(_ah, _reg, _val) \
25 	ath9k_hw_common(_ah)->ops->write((_ah), (_val), (_reg))
26 #define REG_READ_D(_ah, _reg) \
27 	ath9k_hw_common(_ah)->ops->read((_ah), (_reg))
28 
29 void ath9k_debug_sync_cause(struct ath_softc *sc, u32 sync_cause)
30 {
31 	if (sync_cause)
32 		sc->debug.stats.istats.sync_cause_all++;
33 	if (sync_cause & AR_INTR_SYNC_RTC_IRQ)
34 		sc->debug.stats.istats.sync_rtc_irq++;
35 	if (sync_cause & AR_INTR_SYNC_MAC_IRQ)
36 		sc->debug.stats.istats.sync_mac_irq++;
37 	if (sync_cause & AR_INTR_SYNC_EEPROM_ILLEGAL_ACCESS)
38 		sc->debug.stats.istats.eeprom_illegal_access++;
39 	if (sync_cause & AR_INTR_SYNC_APB_TIMEOUT)
40 		sc->debug.stats.istats.apb_timeout++;
41 	if (sync_cause & AR_INTR_SYNC_PCI_MODE_CONFLICT)
42 		sc->debug.stats.istats.pci_mode_conflict++;
43 	if (sync_cause & AR_INTR_SYNC_HOST1_FATAL)
44 		sc->debug.stats.istats.host1_fatal++;
45 	if (sync_cause & AR_INTR_SYNC_HOST1_PERR)
46 		sc->debug.stats.istats.host1_perr++;
47 	if (sync_cause & AR_INTR_SYNC_TRCV_FIFO_PERR)
48 		sc->debug.stats.istats.trcv_fifo_perr++;
49 	if (sync_cause & AR_INTR_SYNC_RADM_CPL_EP)
50 		sc->debug.stats.istats.radm_cpl_ep++;
51 	if (sync_cause & AR_INTR_SYNC_RADM_CPL_DLLP_ABORT)
52 		sc->debug.stats.istats.radm_cpl_dllp_abort++;
53 	if (sync_cause & AR_INTR_SYNC_RADM_CPL_TLP_ABORT)
54 		sc->debug.stats.istats.radm_cpl_tlp_abort++;
55 	if (sync_cause & AR_INTR_SYNC_RADM_CPL_ECRC_ERR)
56 		sc->debug.stats.istats.radm_cpl_ecrc_err++;
57 	if (sync_cause & AR_INTR_SYNC_RADM_CPL_TIMEOUT)
58 		sc->debug.stats.istats.radm_cpl_timeout++;
59 	if (sync_cause & AR_INTR_SYNC_LOCAL_TIMEOUT)
60 		sc->debug.stats.istats.local_timeout++;
61 	if (sync_cause & AR_INTR_SYNC_PM_ACCESS)
62 		sc->debug.stats.istats.pm_access++;
63 	if (sync_cause & AR_INTR_SYNC_MAC_AWAKE)
64 		sc->debug.stats.istats.mac_awake++;
65 	if (sync_cause & AR_INTR_SYNC_MAC_ASLEEP)
66 		sc->debug.stats.istats.mac_asleep++;
67 	if (sync_cause & AR_INTR_SYNC_MAC_SLEEP_ACCESS)
68 		sc->debug.stats.istats.mac_sleep_access++;
69 }
70 
71 static ssize_t ath9k_debugfs_read_buf(struct file *file, char __user *user_buf,
72 				      size_t count, loff_t *ppos)
73 {
74 	u8 *buf = file->private_data;
75 	return simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
76 }
77 
78 static int ath9k_debugfs_release_buf(struct inode *inode, struct file *file)
79 {
80 	vfree(file->private_data);
81 	return 0;
82 }
83 
84 #ifdef CONFIG_ATH_DEBUG
85 
86 static ssize_t read_file_debug(struct file *file, char __user *user_buf,
87 			     size_t count, loff_t *ppos)
88 {
89 	struct ath_softc *sc = file->private_data;
90 	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
91 	char buf[32];
92 	unsigned int len;
93 
94 	len = sprintf(buf, "0x%08x\n", common->debug_mask);
95 	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
96 }
97 
98 static ssize_t write_file_debug(struct file *file, const char __user *user_buf,
99 			     size_t count, loff_t *ppos)
100 {
101 	struct ath_softc *sc = file->private_data;
102 	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
103 	unsigned long mask;
104 	char buf[32];
105 	ssize_t len;
106 
107 	len = min(count, sizeof(buf) - 1);
108 	if (copy_from_user(buf, user_buf, len))
109 		return -EFAULT;
110 
111 	buf[len] = '\0';
112 	if (kstrtoul(buf, 0, &mask))
113 		return -EINVAL;
114 
115 	common->debug_mask = mask;
116 	return count;
117 }
118 
119 static const struct file_operations fops_debug = {
120 	.read = read_file_debug,
121 	.write = write_file_debug,
122 	.open = simple_open,
123 	.owner = THIS_MODULE,
124 	.llseek = default_llseek,
125 };
126 
127 #endif
128 
129 #define DMA_BUF_LEN 1024
130 
131 
132 static ssize_t read_file_ani(struct file *file, char __user *user_buf,
133 			     size_t count, loff_t *ppos)
134 {
135 	struct ath_softc *sc = file->private_data;
136 	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
137 	struct ath_hw *ah = sc->sc_ah;
138 	unsigned int len = 0;
139 	const unsigned int size = 1024;
140 	ssize_t retval = 0;
141 	char *buf;
142 	int i;
143 	struct {
144 		const char *name;
145 		unsigned int val;
146 	} ani_info[] = {
147 		{ "ANI RESET", ah->stats.ast_ani_reset },
148 		{ "OFDM LEVEL", ah->ani.ofdmNoiseImmunityLevel },
149 		{ "CCK LEVEL", ah->ani.cckNoiseImmunityLevel },
150 		{ "SPUR UP", ah->stats.ast_ani_spurup },
151 		{ "SPUR DOWN", ah->stats.ast_ani_spurup },
152 		{ "OFDM WS-DET ON", ah->stats.ast_ani_ofdmon },
153 		{ "OFDM WS-DET OFF", ah->stats.ast_ani_ofdmoff },
154 		{ "MRC-CCK ON", ah->stats.ast_ani_ccklow },
155 		{ "MRC-CCK OFF", ah->stats.ast_ani_cckhigh },
156 		{ "FIR-STEP UP", ah->stats.ast_ani_stepup },
157 		{ "FIR-STEP DOWN", ah->stats.ast_ani_stepdown },
158 		{ "INV LISTENTIME", ah->stats.ast_ani_lneg_or_lzero },
159 		{ "OFDM ERRORS", ah->stats.ast_ani_ofdmerrs },
160 		{ "CCK ERRORS", ah->stats.ast_ani_cckerrs },
161 	};
162 
163 	buf = kzalloc(size, GFP_KERNEL);
164 	if (buf == NULL)
165 		return -ENOMEM;
166 
167 	len += scnprintf(buf + len, size - len, "%15s: %s\n", "ANI",
168 			 common->disable_ani ? "DISABLED" : "ENABLED");
169 
170 	if (common->disable_ani)
171 		goto exit;
172 
173 	for (i = 0; i < ARRAY_SIZE(ani_info); i++)
174 		len += scnprintf(buf + len, size - len, "%15s: %u\n",
175 				 ani_info[i].name, ani_info[i].val);
176 
177 exit:
178 	if (len > size)
179 		len = size;
180 
181 	retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
182 	kfree(buf);
183 
184 	return retval;
185 }
186 
187 static ssize_t write_file_ani(struct file *file,
188 			      const char __user *user_buf,
189 			      size_t count, loff_t *ppos)
190 {
191 	struct ath_softc *sc = file->private_data;
192 	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
193 	unsigned long ani;
194 	char buf[32];
195 	ssize_t len;
196 
197 	len = min(count, sizeof(buf) - 1);
198 	if (copy_from_user(buf, user_buf, len))
199 		return -EFAULT;
200 
201 	buf[len] = '\0';
202 	if (kstrtoul(buf, 0, &ani))
203 		return -EINVAL;
204 
205 	if (ani > 1)
206 		return -EINVAL;
207 
208 	common->disable_ani = !ani;
209 
210 	if (common->disable_ani) {
211 		clear_bit(ATH_OP_ANI_RUN, &common->op_flags);
212 		ath_stop_ani(sc);
213 	} else {
214 		ath_check_ani(sc);
215 	}
216 
217 	return count;
218 }
219 
220 static const struct file_operations fops_ani = {
221 	.read = read_file_ani,
222 	.write = write_file_ani,
223 	.open = simple_open,
224 	.owner = THIS_MODULE,
225 	.llseek = default_llseek,
226 };
227 
228 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
229 
230 static ssize_t read_file_bt_ant_diversity(struct file *file,
231 					  char __user *user_buf,
232 					  size_t count, loff_t *ppos)
233 {
234 	struct ath_softc *sc = file->private_data;
235 	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
236 	char buf[32];
237 	unsigned int len;
238 
239 	len = sprintf(buf, "%d\n", common->bt_ant_diversity);
240 	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
241 }
242 
243 static ssize_t write_file_bt_ant_diversity(struct file *file,
244 					   const char __user *user_buf,
245 					   size_t count, loff_t *ppos)
246 {
247 	struct ath_softc *sc = file->private_data;
248 	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
249 	struct ath9k_hw_capabilities *pCap = &sc->sc_ah->caps;
250 	unsigned long bt_ant_diversity;
251 	char buf[32];
252 	ssize_t len;
253 
254 	len = min(count, sizeof(buf) - 1);
255 	if (copy_from_user(buf, user_buf, len))
256 		return -EFAULT;
257 
258 	if (!(pCap->hw_caps & ATH9K_HW_CAP_BT_ANT_DIV))
259 		goto exit;
260 
261 	buf[len] = '\0';
262 	if (kstrtoul(buf, 0, &bt_ant_diversity))
263 		return -EINVAL;
264 
265 	common->bt_ant_diversity = !!bt_ant_diversity;
266 	ath9k_ps_wakeup(sc);
267 	ath9k_hw_set_bt_ant_diversity(sc->sc_ah, common->bt_ant_diversity);
268 	ath_dbg(common, CONFIG, "Enable WLAN/BT RX Antenna diversity: %d\n",
269 		common->bt_ant_diversity);
270 	ath9k_ps_restore(sc);
271 exit:
272 	return count;
273 }
274 
275 static const struct file_operations fops_bt_ant_diversity = {
276 	.read = read_file_bt_ant_diversity,
277 	.write = write_file_bt_ant_diversity,
278 	.open = simple_open,
279 	.owner = THIS_MODULE,
280 	.llseek = default_llseek,
281 };
282 
283 #endif
284 
285 void ath9k_debug_stat_ant(struct ath_softc *sc,
286 			  struct ath_hw_antcomb_conf *div_ant_conf,
287 			  int main_rssi_avg, int alt_rssi_avg)
288 {
289 	struct ath_antenna_stats *as_main = &sc->debug.stats.ant_stats[ANT_MAIN];
290 	struct ath_antenna_stats *as_alt = &sc->debug.stats.ant_stats[ANT_ALT];
291 
292 	as_main->lna_attempt_cnt[div_ant_conf->main_lna_conf]++;
293 	as_alt->lna_attempt_cnt[div_ant_conf->alt_lna_conf]++;
294 
295 	as_main->rssi_avg = main_rssi_avg;
296 	as_alt->rssi_avg = alt_rssi_avg;
297 }
298 
299 static ssize_t read_file_antenna_diversity(struct file *file,
300 					   char __user *user_buf,
301 					   size_t count, loff_t *ppos)
302 {
303 	struct ath_softc *sc = file->private_data;
304 	struct ath_hw *ah = sc->sc_ah;
305 	struct ath9k_hw_capabilities *pCap = &ah->caps;
306 	struct ath_antenna_stats *as_main = &sc->debug.stats.ant_stats[ANT_MAIN];
307 	struct ath_antenna_stats *as_alt = &sc->debug.stats.ant_stats[ANT_ALT];
308 	struct ath_hw_antcomb_conf div_ant_conf;
309 	unsigned int len = 0;
310 	const unsigned int size = 1024;
311 	ssize_t retval = 0;
312 	char *buf;
313 	static const char *lna_conf_str[4] = {
314 		"LNA1_MINUS_LNA2", "LNA2", "LNA1", "LNA1_PLUS_LNA2"
315 	};
316 
317 	buf = kzalloc(size, GFP_KERNEL);
318 	if (buf == NULL)
319 		return -ENOMEM;
320 
321 	if (!(pCap->hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB)) {
322 		len += scnprintf(buf + len, size - len, "%s\n",
323 				 "Antenna Diversity Combining is disabled");
324 		goto exit;
325 	}
326 
327 	ath9k_ps_wakeup(sc);
328 	ath9k_hw_antdiv_comb_conf_get(ah, &div_ant_conf);
329 	len += scnprintf(buf + len, size - len, "Current MAIN config : %s\n",
330 			 lna_conf_str[div_ant_conf.main_lna_conf]);
331 	len += scnprintf(buf + len, size - len, "Current ALT config  : %s\n",
332 			 lna_conf_str[div_ant_conf.alt_lna_conf]);
333 	len += scnprintf(buf + len, size - len, "Average MAIN RSSI   : %d\n",
334 			 as_main->rssi_avg);
335 	len += scnprintf(buf + len, size - len, "Average ALT RSSI    : %d\n\n",
336 			 as_alt->rssi_avg);
337 	ath9k_ps_restore(sc);
338 
339 	len += scnprintf(buf + len, size - len, "Packet Receive Cnt:\n");
340 	len += scnprintf(buf + len, size - len, "-------------------\n");
341 
342 	len += scnprintf(buf + len, size - len, "%30s%15s\n",
343 			 "MAIN", "ALT");
344 	len += scnprintf(buf + len, size - len, "%-14s:%15d%15d\n",
345 			 "TOTAL COUNT",
346 			 as_main->recv_cnt,
347 			 as_alt->recv_cnt);
348 	len += scnprintf(buf + len, size - len, "%-14s:%15d%15d\n",
349 			 "LNA1",
350 			 as_main->lna_recv_cnt[ATH_ANT_DIV_COMB_LNA1],
351 			 as_alt->lna_recv_cnt[ATH_ANT_DIV_COMB_LNA1]);
352 	len += scnprintf(buf + len, size - len, "%-14s:%15d%15d\n",
353 			 "LNA2",
354 			 as_main->lna_recv_cnt[ATH_ANT_DIV_COMB_LNA2],
355 			 as_alt->lna_recv_cnt[ATH_ANT_DIV_COMB_LNA2]);
356 	len += scnprintf(buf + len, size - len, "%-14s:%15d%15d\n",
357 			 "LNA1 + LNA2",
358 			 as_main->lna_recv_cnt[ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2],
359 			 as_alt->lna_recv_cnt[ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2]);
360 	len += scnprintf(buf + len, size - len, "%-14s:%15d%15d\n",
361 			 "LNA1 - LNA2",
362 			 as_main->lna_recv_cnt[ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2],
363 			 as_alt->lna_recv_cnt[ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2]);
364 
365 	len += scnprintf(buf + len, size - len, "\nLNA Config Attempts:\n");
366 	len += scnprintf(buf + len, size - len, "--------------------\n");
367 
368 	len += scnprintf(buf + len, size - len, "%30s%15s\n",
369 			 "MAIN", "ALT");
370 	len += scnprintf(buf + len, size - len, "%-14s:%15d%15d\n",
371 			 "LNA1",
372 			 as_main->lna_attempt_cnt[ATH_ANT_DIV_COMB_LNA1],
373 			 as_alt->lna_attempt_cnt[ATH_ANT_DIV_COMB_LNA1]);
374 	len += scnprintf(buf + len, size - len, "%-14s:%15d%15d\n",
375 			 "LNA2",
376 			 as_main->lna_attempt_cnt[ATH_ANT_DIV_COMB_LNA2],
377 			 as_alt->lna_attempt_cnt[ATH_ANT_DIV_COMB_LNA2]);
378 	len += scnprintf(buf + len, size - len, "%-14s:%15d%15d\n",
379 			 "LNA1 + LNA2",
380 			 as_main->lna_attempt_cnt[ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2],
381 			 as_alt->lna_attempt_cnt[ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2]);
382 	len += scnprintf(buf + len, size - len, "%-14s:%15d%15d\n",
383 			 "LNA1 - LNA2",
384 			 as_main->lna_attempt_cnt[ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2],
385 			 as_alt->lna_attempt_cnt[ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2]);
386 
387 exit:
388 	if (len > size)
389 		len = size;
390 
391 	retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
392 	kfree(buf);
393 
394 	return retval;
395 }
396 
397 static const struct file_operations fops_antenna_diversity = {
398 	.read = read_file_antenna_diversity,
399 	.open = simple_open,
400 	.owner = THIS_MODULE,
401 	.llseek = default_llseek,
402 };
403 
404 static int read_file_dma(struct seq_file *file, void *data)
405 {
406 	struct ieee80211_hw *hw = dev_get_drvdata(file->private);
407 	struct ath_softc *sc = hw->priv;
408 	struct ath_hw *ah = sc->sc_ah;
409 	u32 val[ATH9K_NUM_DMA_DEBUG_REGS];
410 	int i, qcuOffset = 0, dcuOffset = 0;
411 	u32 *qcuBase = &val[0], *dcuBase = &val[4];
412 
413 	ath9k_ps_wakeup(sc);
414 
415 	REG_WRITE_D(ah, AR_MACMISC,
416 		  ((AR_MACMISC_DMA_OBS_LINE_8 << AR_MACMISC_DMA_OBS_S) |
417 		   (AR_MACMISC_MISC_OBS_BUS_1 <<
418 		    AR_MACMISC_MISC_OBS_BUS_MSB_S)));
419 
420 	seq_puts(file, "Raw DMA Debug values:\n");
421 
422 	for (i = 0; i < ATH9K_NUM_DMA_DEBUG_REGS; i++) {
423 		if (i % 4 == 0)
424 			seq_puts(file, "\n");
425 
426 		val[i] = REG_READ_D(ah, AR_DMADBG_0 + (i * sizeof(u32)));
427 		seq_printf(file, "%d: %08x ", i, val[i]);
428 	}
429 
430 	seq_puts(file, "\n\n");
431 	seq_puts(file, "Num QCU: chain_st fsp_ok fsp_st DCU: chain_st\n");
432 
433 	for (i = 0; i < ATH9K_NUM_QUEUES; i++, qcuOffset += 4, dcuOffset += 5) {
434 		if (i == 8) {
435 			qcuOffset = 0;
436 			qcuBase++;
437 		}
438 
439 		if (i == 6) {
440 			dcuOffset = 0;
441 			dcuBase++;
442 		}
443 
444 		seq_printf(file, "%2d          %2x      %1x     %2x           %2x\n",
445 			   i, (*qcuBase & (0x7 << qcuOffset)) >> qcuOffset,
446 			   (*qcuBase & (0x8 << qcuOffset)) >> (qcuOffset + 3),
447 			   (val[2] & (0x7 << (i * 3))) >> (i * 3),
448 			   (*dcuBase & (0x1f << dcuOffset)) >> dcuOffset);
449 	}
450 
451 	seq_puts(file, "\n");
452 
453 	seq_printf(file, "qcu_stitch state:   %2x    qcu_fetch state:        %2x\n",
454 		   (val[3] & 0x003c0000) >> 18, (val[3] & 0x03c00000) >> 22);
455 	seq_printf(file, "qcu_complete state: %2x    dcu_complete state:     %2x\n",
456 		   (val[3] & 0x1c000000) >> 26, (val[6] & 0x3));
457 	seq_printf(file, "dcu_arb state:      %2x    dcu_fp state:           %2x\n",
458 		   (val[5] & 0x06000000) >> 25, (val[5] & 0x38000000) >> 27);
459 	seq_printf(file, "chan_idle_dur:     %3d    chan_idle_dur_valid:     %1d\n",
460 		   (val[6] & 0x000003fc) >> 2, (val[6] & 0x00000400) >> 10);
461 	seq_printf(file, "txfifo_valid_0:      %1d    txfifo_valid_1:          %1d\n",
462 		   (val[6] & 0x00000800) >> 11, (val[6] & 0x00001000) >> 12);
463 	seq_printf(file, "txfifo_dcu_num_0:   %2d    txfifo_dcu_num_1:       %2d\n",
464 		   (val[6] & 0x0001e000) >> 13, (val[6] & 0x001e0000) >> 17);
465 
466 	seq_printf(file, "pcu observe: 0x%x\n", REG_READ_D(ah, AR_OBS_BUS_1));
467 	seq_printf(file, "AR_CR: 0x%x\n", REG_READ_D(ah, AR_CR));
468 
469 	ath9k_ps_restore(sc);
470 
471 	return 0;
472 }
473 
474 void ath_debug_stat_interrupt(struct ath_softc *sc, enum ath9k_int status)
475 {
476 	if (status)
477 		sc->debug.stats.istats.total++;
478 	if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
479 		if (status & ATH9K_INT_RXLP)
480 			sc->debug.stats.istats.rxlp++;
481 		if (status & ATH9K_INT_RXHP)
482 			sc->debug.stats.istats.rxhp++;
483 		if (status & ATH9K_INT_BB_WATCHDOG)
484 			sc->debug.stats.istats.bb_watchdog++;
485 	} else {
486 		if (status & ATH9K_INT_RX)
487 			sc->debug.stats.istats.rxok++;
488 	}
489 	if (status & ATH9K_INT_RXEOL)
490 		sc->debug.stats.istats.rxeol++;
491 	if (status & ATH9K_INT_RXORN)
492 		sc->debug.stats.istats.rxorn++;
493 	if (status & ATH9K_INT_TX)
494 		sc->debug.stats.istats.txok++;
495 	if (status & ATH9K_INT_TXURN)
496 		sc->debug.stats.istats.txurn++;
497 	if (status & ATH9K_INT_RXPHY)
498 		sc->debug.stats.istats.rxphyerr++;
499 	if (status & ATH9K_INT_RXKCM)
500 		sc->debug.stats.istats.rx_keycache_miss++;
501 	if (status & ATH9K_INT_SWBA)
502 		sc->debug.stats.istats.swba++;
503 	if (status & ATH9K_INT_BMISS)
504 		sc->debug.stats.istats.bmiss++;
505 	if (status & ATH9K_INT_BNR)
506 		sc->debug.stats.istats.bnr++;
507 	if (status & ATH9K_INT_CST)
508 		sc->debug.stats.istats.cst++;
509 	if (status & ATH9K_INT_GTT)
510 		sc->debug.stats.istats.gtt++;
511 	if (status & ATH9K_INT_TIM)
512 		sc->debug.stats.istats.tim++;
513 	if (status & ATH9K_INT_CABEND)
514 		sc->debug.stats.istats.cabend++;
515 	if (status & ATH9K_INT_DTIMSYNC)
516 		sc->debug.stats.istats.dtimsync++;
517 	if (status & ATH9K_INT_DTIM)
518 		sc->debug.stats.istats.dtim++;
519 	if (status & ATH9K_INT_TSFOOR)
520 		sc->debug.stats.istats.tsfoor++;
521 	if (status & ATH9K_INT_MCI)
522 		sc->debug.stats.istats.mci++;
523 	if (status & ATH9K_INT_GENTIMER)
524 		sc->debug.stats.istats.gen_timer++;
525 }
526 
527 static int read_file_interrupt(struct seq_file *file, void *data)
528 {
529 	struct ieee80211_hw *hw = dev_get_drvdata(file->private);
530 	struct ath_softc *sc = hw->priv;
531 
532 #define PR_IS(a, s)						\
533 	do {							\
534 		seq_printf(file, "%21s: %10u\n", a,		\
535 			   sc->debug.stats.istats.s);		\
536 	} while (0)
537 
538 	if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
539 		PR_IS("RXLP", rxlp);
540 		PR_IS("RXHP", rxhp);
541 		PR_IS("WATCHDOG", bb_watchdog);
542 	} else {
543 		PR_IS("RX", rxok);
544 	}
545 	PR_IS("RXEOL", rxeol);
546 	PR_IS("RXORN", rxorn);
547 	PR_IS("TX", txok);
548 	PR_IS("TXURN", txurn);
549 	PR_IS("MIB", mib);
550 	PR_IS("RXPHY", rxphyerr);
551 	PR_IS("RXKCM", rx_keycache_miss);
552 	PR_IS("SWBA", swba);
553 	PR_IS("BMISS", bmiss);
554 	PR_IS("BNR", bnr);
555 	PR_IS("CST", cst);
556 	PR_IS("GTT", gtt);
557 	PR_IS("TIM", tim);
558 	PR_IS("CABEND", cabend);
559 	PR_IS("DTIMSYNC", dtimsync);
560 	PR_IS("DTIM", dtim);
561 	PR_IS("TSFOOR", tsfoor);
562 	PR_IS("MCI", mci);
563 	PR_IS("GENTIMER", gen_timer);
564 	PR_IS("TOTAL", total);
565 
566 	seq_puts(file, "SYNC_CAUSE stats:\n");
567 
568 	PR_IS("Sync-All", sync_cause_all);
569 	PR_IS("RTC-IRQ", sync_rtc_irq);
570 	PR_IS("MAC-IRQ", sync_mac_irq);
571 	PR_IS("EEPROM-Illegal-Access", eeprom_illegal_access);
572 	PR_IS("APB-Timeout", apb_timeout);
573 	PR_IS("PCI-Mode-Conflict", pci_mode_conflict);
574 	PR_IS("HOST1-Fatal", host1_fatal);
575 	PR_IS("HOST1-Perr", host1_perr);
576 	PR_IS("TRCV-FIFO-Perr", trcv_fifo_perr);
577 	PR_IS("RADM-CPL-EP", radm_cpl_ep);
578 	PR_IS("RADM-CPL-DLLP-Abort", radm_cpl_dllp_abort);
579 	PR_IS("RADM-CPL-TLP-Abort", radm_cpl_tlp_abort);
580 	PR_IS("RADM-CPL-ECRC-Err", radm_cpl_ecrc_err);
581 	PR_IS("RADM-CPL-Timeout", radm_cpl_timeout);
582 	PR_IS("Local-Bus-Timeout", local_timeout);
583 	PR_IS("PM-Access", pm_access);
584 	PR_IS("MAC-Awake", mac_awake);
585 	PR_IS("MAC-Asleep", mac_asleep);
586 	PR_IS("MAC-Sleep-Access", mac_sleep_access);
587 
588 	return 0;
589 }
590 
591 static int read_file_xmit(struct seq_file *file, void *data)
592 {
593 	struct ieee80211_hw *hw = dev_get_drvdata(file->private);
594 	struct ath_softc *sc = hw->priv;
595 
596 	seq_printf(file, "%30s %10s%10s%10s\n\n", "BE", "BK", "VI", "VO");
597 
598 	PR("MPDUs Queued:    ", queued);
599 	PR("MPDUs Completed: ", completed);
600 	PR("MPDUs XRetried:  ", xretries);
601 	PR("Aggregates:      ", a_aggr);
602 	PR("AMPDUs Queued HW:", a_queued_hw);
603 	PR("AMPDUs Completed:", a_completed);
604 	PR("AMPDUs Retried:  ", a_retries);
605 	PR("AMPDUs XRetried: ", a_xretries);
606 	PR("TXERR Filtered:  ", txerr_filtered);
607 	PR("FIFO Underrun:   ", fifo_underrun);
608 	PR("TXOP Exceeded:   ", xtxop);
609 	PR("TXTIMER Expiry:  ", timer_exp);
610 	PR("DESC CFG Error:  ", desc_cfg_err);
611 	PR("DATA Underrun:   ", data_underrun);
612 	PR("DELIM Underrun:  ", delim_underrun);
613 	PR("TX-Pkts-All:     ", tx_pkts_all);
614 	PR("TX-Bytes-All:    ", tx_bytes_all);
615 	PR("HW-put-tx-buf:   ", puttxbuf);
616 	PR("HW-tx-start:     ", txstart);
617 	PR("HW-tx-proc-desc: ", txprocdesc);
618 	PR("TX-Failed:       ", txfailed);
619 
620 	return 0;
621 }
622 
623 static void print_queue(struct ath_softc *sc, struct ath_txq *txq,
624 			struct seq_file *file)
625 {
626 	ath_txq_lock(sc, txq);
627 
628 	seq_printf(file, "%s: %d ", "qnum", txq->axq_qnum);
629 	seq_printf(file, "%s: %2d ", "qdepth", txq->axq_depth);
630 	seq_printf(file, "%s: %2d ", "ampdu-depth", txq->axq_ampdu_depth);
631 	seq_printf(file, "%s: %3d\n", "pending", txq->pending_frames);
632 
633 	ath_txq_unlock(sc, txq);
634 }
635 
636 static int read_file_queues(struct seq_file *file, void *data)
637 {
638 	struct ieee80211_hw *hw = dev_get_drvdata(file->private);
639 	struct ath_softc *sc = hw->priv;
640 	struct ath_txq *txq;
641 	int i;
642 	static const char *qname[4] = {
643 		"VO", "VI", "BE", "BK"
644 	};
645 
646 	for (i = 0; i < IEEE80211_NUM_ACS; i++) {
647 		txq = sc->tx.txq_map[i];
648 		seq_printf(file, "(%s):  ", qname[i]);
649 		print_queue(sc, txq, file);
650 	}
651 
652 	seq_puts(file, "(CAB): ");
653 	print_queue(sc, sc->beacon.cabq, file);
654 
655 	return 0;
656 }
657 
658 static int read_file_misc(struct seq_file *file, void *data)
659 {
660 	struct ieee80211_hw *hw = dev_get_drvdata(file->private);
661 	struct ath_softc *sc = hw->priv;
662 	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
663 	struct ath9k_vif_iter_data iter_data;
664 	struct ath_chanctx *ctx;
665 	unsigned int reg;
666 	u32 rxfilter, i;
667 
668 	seq_printf(file, "BSSID: %pM\n", common->curbssid);
669 	seq_printf(file, "BSSID-MASK: %pM\n", common->bssidmask);
670 	seq_printf(file, "OPMODE: %s\n",
671 		   ath_opmode_to_string(sc->sc_ah->opmode));
672 
673 	ath9k_ps_wakeup(sc);
674 	rxfilter = ath9k_hw_getrxfilter(sc->sc_ah);
675 	ath9k_ps_restore(sc);
676 
677 	seq_printf(file, "RXFILTER: 0x%x", rxfilter);
678 
679 	if (rxfilter & ATH9K_RX_FILTER_UCAST)
680 		seq_puts(file, " UCAST");
681 	if (rxfilter & ATH9K_RX_FILTER_MCAST)
682 		seq_puts(file, " MCAST");
683 	if (rxfilter & ATH9K_RX_FILTER_BCAST)
684 		seq_puts(file, " BCAST");
685 	if (rxfilter & ATH9K_RX_FILTER_CONTROL)
686 		seq_puts(file, " CONTROL");
687 	if (rxfilter & ATH9K_RX_FILTER_BEACON)
688 		seq_puts(file, " BEACON");
689 	if (rxfilter & ATH9K_RX_FILTER_PROM)
690 		seq_puts(file, " PROM");
691 	if (rxfilter & ATH9K_RX_FILTER_PROBEREQ)
692 		seq_puts(file, " PROBEREQ");
693 	if (rxfilter & ATH9K_RX_FILTER_PHYERR)
694 		seq_puts(file, " PHYERR");
695 	if (rxfilter & ATH9K_RX_FILTER_MYBEACON)
696 		seq_puts(file, " MYBEACON");
697 	if (rxfilter & ATH9K_RX_FILTER_COMP_BAR)
698 		seq_puts(file, " COMP_BAR");
699 	if (rxfilter & ATH9K_RX_FILTER_PSPOLL)
700 		seq_puts(file, " PSPOLL");
701 	if (rxfilter & ATH9K_RX_FILTER_PHYRADAR)
702 		seq_puts(file, " PHYRADAR");
703 	if (rxfilter & ATH9K_RX_FILTER_MCAST_BCAST_ALL)
704 		seq_puts(file, " MCAST_BCAST_ALL");
705 	if (rxfilter & ATH9K_RX_FILTER_CONTROL_WRAPPER)
706 		seq_puts(file, " CONTROL_WRAPPER");
707 
708 	seq_puts(file, "\n");
709 
710 	reg = sc->sc_ah->imask;
711 
712 	seq_printf(file, "INTERRUPT-MASK: 0x%x", reg);
713 
714 	if (reg & ATH9K_INT_SWBA)
715 		seq_puts(file, " SWBA");
716 	if (reg & ATH9K_INT_BMISS)
717 		seq_puts(file, " BMISS");
718 	if (reg & ATH9K_INT_CST)
719 		seq_puts(file, " CST");
720 	if (reg & ATH9K_INT_RX)
721 		seq_puts(file, " RX");
722 	if (reg & ATH9K_INT_RXHP)
723 		seq_puts(file, " RXHP");
724 	if (reg & ATH9K_INT_RXLP)
725 		seq_puts(file, " RXLP");
726 	if (reg & ATH9K_INT_BB_WATCHDOG)
727 		seq_puts(file, " BB_WATCHDOG");
728 
729 	seq_puts(file, "\n");
730 
731 	i = 0;
732 	ath_for_each_chanctx(sc, ctx) {
733 		if (list_empty(&ctx->vifs))
734 			continue;
735 		ath9k_calculate_iter_data(sc, ctx, &iter_data);
736 
737 		seq_printf(file,
738 			   "VIFS: CTX %i(%i) AP: %i STA: %i MESH: %i WDS: %i",
739 			   i++, (int)(ctx->assigned), iter_data.naps,
740 			   iter_data.nstations,
741 			   iter_data.nmeshes, iter_data.nwds);
742 		seq_printf(file, " ADHOC: %i OCB: %i TOTAL: %hi BEACON-VIF: %hi\n",
743 			   iter_data.nadhocs, iter_data.nocbs, sc->cur_chan->nvifs,
744 			   sc->nbcnvifs);
745 	}
746 
747 	return 0;
748 }
749 
750 static int read_file_reset(struct seq_file *file, void *data)
751 {
752 	struct ieee80211_hw *hw = dev_get_drvdata(file->private);
753 	struct ath_softc *sc = hw->priv;
754 	static const char * const reset_cause[__RESET_TYPE_MAX] = {
755 		[RESET_TYPE_BB_HANG] = "Baseband Hang",
756 		[RESET_TYPE_BB_WATCHDOG] = "Baseband Watchdog",
757 		[RESET_TYPE_FATAL_INT] = "Fatal HW Error",
758 		[RESET_TYPE_TX_ERROR] = "TX HW error",
759 		[RESET_TYPE_TX_GTT] = "Transmit timeout",
760 		[RESET_TYPE_TX_HANG] = "TX Path Hang",
761 		[RESET_TYPE_PLL_HANG] = "PLL RX Hang",
762 		[RESET_TYPE_MAC_HANG] = "MAC Hang",
763 		[RESET_TYPE_BEACON_STUCK] = "Stuck Beacon",
764 		[RESET_TYPE_MCI] = "MCI Reset",
765 		[RESET_TYPE_CALIBRATION] = "Calibration error",
766 		[RESET_TX_DMA_ERROR] = "Tx DMA stop error",
767 		[RESET_RX_DMA_ERROR] = "Rx DMA stop error",
768 	};
769 	int i;
770 
771 	for (i = 0; i < ARRAY_SIZE(reset_cause); i++) {
772 		if (!reset_cause[i])
773 		    continue;
774 
775 		seq_printf(file, "%17s: %2d\n", reset_cause[i],
776 			   sc->debug.stats.reset[i]);
777 	}
778 
779 	return 0;
780 }
781 
782 void ath_debug_stat_tx(struct ath_softc *sc, struct ath_buf *bf,
783 		       struct ath_tx_status *ts, struct ath_txq *txq,
784 		       unsigned int flags)
785 {
786 	int qnum = txq->axq_qnum;
787 
788 	TX_STAT_INC(qnum, tx_pkts_all);
789 	sc->debug.stats.txstats[qnum].tx_bytes_all += bf->bf_mpdu->len;
790 
791 	if (bf_isampdu(bf)) {
792 		if (flags & ATH_TX_ERROR)
793 			TX_STAT_INC(qnum, a_xretries);
794 		else
795 			TX_STAT_INC(qnum, a_completed);
796 	} else {
797 		if (ts->ts_status & ATH9K_TXERR_XRETRY)
798 			TX_STAT_INC(qnum, xretries);
799 		else
800 			TX_STAT_INC(qnum, completed);
801 	}
802 
803 	if (ts->ts_status & ATH9K_TXERR_FILT)
804 		TX_STAT_INC(qnum, txerr_filtered);
805 	if (ts->ts_status & ATH9K_TXERR_FIFO)
806 		TX_STAT_INC(qnum, fifo_underrun);
807 	if (ts->ts_status & ATH9K_TXERR_XTXOP)
808 		TX_STAT_INC(qnum, xtxop);
809 	if (ts->ts_status & ATH9K_TXERR_TIMER_EXPIRED)
810 		TX_STAT_INC(qnum, timer_exp);
811 	if (ts->ts_flags & ATH9K_TX_DESC_CFG_ERR)
812 		TX_STAT_INC(qnum, desc_cfg_err);
813 	if (ts->ts_flags & ATH9K_TX_DATA_UNDERRUN)
814 		TX_STAT_INC(qnum, data_underrun);
815 	if (ts->ts_flags & ATH9K_TX_DELIM_UNDERRUN)
816 		TX_STAT_INC(qnum, delim_underrun);
817 }
818 
819 void ath_debug_stat_rx(struct ath_softc *sc, struct ath_rx_status *rs)
820 {
821 	ath9k_cmn_debug_stat_rx(&sc->debug.stats.rxstats, rs);
822 }
823 
824 static ssize_t read_file_regidx(struct file *file, char __user *user_buf,
825 				size_t count, loff_t *ppos)
826 {
827 	struct ath_softc *sc = file->private_data;
828 	char buf[32];
829 	unsigned int len;
830 
831 	len = sprintf(buf, "0x%08x\n", sc->debug.regidx);
832 	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
833 }
834 
835 static ssize_t write_file_regidx(struct file *file, const char __user *user_buf,
836 				 size_t count, loff_t *ppos)
837 {
838 	struct ath_softc *sc = file->private_data;
839 	unsigned long regidx;
840 	char buf[32];
841 	ssize_t len;
842 
843 	len = min(count, sizeof(buf) - 1);
844 	if (copy_from_user(buf, user_buf, len))
845 		return -EFAULT;
846 
847 	buf[len] = '\0';
848 	if (kstrtoul(buf, 0, &regidx))
849 		return -EINVAL;
850 
851 	sc->debug.regidx = regidx;
852 	return count;
853 }
854 
855 static const struct file_operations fops_regidx = {
856 	.read = read_file_regidx,
857 	.write = write_file_regidx,
858 	.open = simple_open,
859 	.owner = THIS_MODULE,
860 	.llseek = default_llseek,
861 };
862 
863 static ssize_t read_file_regval(struct file *file, char __user *user_buf,
864 				size_t count, loff_t *ppos)
865 {
866 	struct ath_softc *sc = file->private_data;
867 	struct ath_hw *ah = sc->sc_ah;
868 	char buf[32];
869 	unsigned int len;
870 	u32 regval;
871 
872 	ath9k_ps_wakeup(sc);
873 	regval = REG_READ_D(ah, sc->debug.regidx);
874 	ath9k_ps_restore(sc);
875 	len = sprintf(buf, "0x%08x\n", regval);
876 	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
877 }
878 
879 static ssize_t write_file_regval(struct file *file, const char __user *user_buf,
880 				 size_t count, loff_t *ppos)
881 {
882 	struct ath_softc *sc = file->private_data;
883 	struct ath_hw *ah = sc->sc_ah;
884 	unsigned long regval;
885 	char buf[32];
886 	ssize_t len;
887 
888 	len = min(count, sizeof(buf) - 1);
889 	if (copy_from_user(buf, user_buf, len))
890 		return -EFAULT;
891 
892 	buf[len] = '\0';
893 	if (kstrtoul(buf, 0, &regval))
894 		return -EINVAL;
895 
896 	ath9k_ps_wakeup(sc);
897 	REG_WRITE_D(ah, sc->debug.regidx, regval);
898 	ath9k_ps_restore(sc);
899 	return count;
900 }
901 
902 static const struct file_operations fops_regval = {
903 	.read = read_file_regval,
904 	.write = write_file_regval,
905 	.open = simple_open,
906 	.owner = THIS_MODULE,
907 	.llseek = default_llseek,
908 };
909 
910 #define REGDUMP_LINE_SIZE	20
911 
912 static int open_file_regdump(struct inode *inode, struct file *file)
913 {
914 	struct ath_softc *sc = inode->i_private;
915 	unsigned int len = 0;
916 	u8 *buf;
917 	int i, j = 0;
918 	unsigned long num_regs, regdump_len, max_reg_offset;
919 	static const struct reg_hole {
920 		u32 start;
921 		u32 end;
922 	} reg_hole_list[] = {
923 		{0x0200, 0x07fc},
924 		{0x0c00, 0x0ffc},
925 		{0x2000, 0x3ffc},
926 		{0x4100, 0x6ffc},
927 		{0x705c, 0x7ffc},
928 		{0x0000, 0x0000}
929 	};
930 
931 	max_reg_offset = AR_SREV_9300_20_OR_LATER(sc->sc_ah) ? 0x8800 : 0xb500;
932 	num_regs = max_reg_offset / 4 + 1;
933 	regdump_len = num_regs * REGDUMP_LINE_SIZE + 1;
934 	buf = vmalloc(regdump_len);
935 	if (!buf)
936 		return -ENOMEM;
937 
938 	ath9k_ps_wakeup(sc);
939 	for (i = 0; i < num_regs; i++) {
940 		if (reg_hole_list[j].start == i << 2) {
941 			i = reg_hole_list[j].end >> 2;
942 			j++;
943 			continue;
944 		}
945 
946 		len += scnprintf(buf + len, regdump_len - len,
947 			"0x%06x 0x%08x\n", i << 2, REG_READ(sc->sc_ah, i << 2));
948 	}
949 	ath9k_ps_restore(sc);
950 
951 	file->private_data = buf;
952 
953 	return 0;
954 }
955 
956 static const struct file_operations fops_regdump = {
957 	.open = open_file_regdump,
958 	.read = ath9k_debugfs_read_buf,
959 	.release = ath9k_debugfs_release_buf,
960 	.owner = THIS_MODULE,
961 	.llseek = default_llseek,/* read accesses f_pos */
962 };
963 
964 static int read_file_dump_nfcal(struct seq_file *file, void *data)
965 {
966 	struct ieee80211_hw *hw = dev_get_drvdata(file->private);
967 	struct ath_softc *sc = hw->priv;
968 	struct ath_hw *ah = sc->sc_ah;
969 	struct ath9k_nfcal_hist *h = sc->cur_chan->caldata.nfCalHist;
970 	struct ath_common *common = ath9k_hw_common(ah);
971 	struct ieee80211_conf *conf = &common->hw->conf;
972 	u32 i, j;
973 	u8 chainmask = (ah->rxchainmask << 3) | ah->rxchainmask;
974 	u8 nread;
975 
976 	seq_printf(file, "Channel Noise Floor : %d\n", ah->noise);
977 	seq_puts(file, "Chain | privNF | # Readings | NF Readings\n");
978 	for (i = 0; i < NUM_NF_READINGS; i++) {
979 		if (!(chainmask & (1 << i)) ||
980 		    ((i >= AR5416_MAX_CHAINS) && !conf_is_ht40(conf)))
981 			continue;
982 
983 		nread = AR_PHY_CCA_FILTERWINDOW_LENGTH - h[i].invalidNFcount;
984 		seq_printf(file, " %d\t %d\t %d\t\t", i, h[i].privNF, nread);
985 		for (j = 0; j < nread; j++)
986 			seq_printf(file, " %d", h[i].nfCalBuffer[j]);
987 		seq_puts(file, "\n");
988 	}
989 
990 	return 0;
991 }
992 
993 static int open_file_dump_nfcal(struct inode *inode, struct file *f)
994 {
995 	return single_open(f, read_file_dump_nfcal, inode->i_private);
996 }
997 
998 static const struct file_operations fops_dump_nfcal = {
999 	.read = seq_read,
1000 	.open = open_file_dump_nfcal,
1001 	.owner = THIS_MODULE,
1002 	.llseek = seq_lseek,
1003 	.release = single_release,
1004 };
1005 
1006 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
1007 static ssize_t read_file_btcoex(struct file *file, char __user *user_buf,
1008 				size_t count, loff_t *ppos)
1009 {
1010 	struct ath_softc *sc = file->private_data;
1011 	u32 len = 0, size = 1500;
1012 	char *buf;
1013 	size_t retval;
1014 
1015 	buf = kzalloc(size, GFP_KERNEL);
1016 	if (buf == NULL)
1017 		return -ENOMEM;
1018 
1019 	if (!sc->sc_ah->common.btcoex_enabled) {
1020 		len = scnprintf(buf, size, "%s\n",
1021 				"BTCOEX is disabled");
1022 		goto exit;
1023 	}
1024 
1025 	len = ath9k_dump_btcoex(sc, buf, size);
1026 exit:
1027 	retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
1028 	kfree(buf);
1029 
1030 	return retval;
1031 }
1032 
1033 static const struct file_operations fops_btcoex = {
1034 	.read = read_file_btcoex,
1035 	.open = simple_open,
1036 	.owner = THIS_MODULE,
1037 	.llseek = default_llseek,
1038 };
1039 #endif
1040 
1041 #ifdef CONFIG_ATH9K_DYNACK
1042 static ssize_t read_file_ackto(struct file *file, char __user *user_buf,
1043 			       size_t count, loff_t *ppos)
1044 {
1045 	struct ath_softc *sc = file->private_data;
1046 	struct ath_hw *ah = sc->sc_ah;
1047 	char buf[32];
1048 	unsigned int len;
1049 
1050 	len = sprintf(buf, "%u %c\n", ah->dynack.ackto,
1051 		      (ah->dynack.enabled) ? 'A' : 'S');
1052 
1053 	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
1054 }
1055 
1056 static const struct file_operations fops_ackto = {
1057 	.read = read_file_ackto,
1058 	.open = simple_open,
1059 	.owner = THIS_MODULE,
1060 	.llseek = default_llseek,
1061 };
1062 #endif
1063 
1064 #ifdef CONFIG_ATH9K_WOW
1065 
1066 static ssize_t read_file_wow(struct file *file, char __user *user_buf,
1067 			     size_t count, loff_t *ppos)
1068 {
1069 	struct ath_softc *sc = file->private_data;
1070 	unsigned int len = 0, size = 32;
1071 	ssize_t retval;
1072 	char *buf;
1073 
1074 	buf = kzalloc(size, GFP_KERNEL);
1075 	if (!buf)
1076 		return -ENOMEM;
1077 
1078 	len += scnprintf(buf + len, size - len, "WOW: %s\n",
1079 			 sc->force_wow ? "ENABLED" : "DISABLED");
1080 
1081 	if (len > size)
1082 		len = size;
1083 
1084 	retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
1085 	kfree(buf);
1086 
1087 	return retval;
1088 }
1089 
1090 static ssize_t write_file_wow(struct file *file, const char __user *user_buf,
1091 			      size_t count, loff_t *ppos)
1092 {
1093 	struct ath_softc *sc = file->private_data;
1094 	unsigned long val;
1095 	char buf[32];
1096 	ssize_t len;
1097 
1098 	len = min(count, sizeof(buf) - 1);
1099 	if (copy_from_user(buf, user_buf, len))
1100 		return -EFAULT;
1101 
1102 	buf[len] = '\0';
1103 	if (kstrtoul(buf, 0, &val))
1104 		return -EINVAL;
1105 
1106 	if (val != 1)
1107 		return -EINVAL;
1108 
1109 	if (!sc->force_wow) {
1110 		sc->force_wow = true;
1111 		ath9k_init_wow(sc->hw);
1112 	}
1113 
1114 	return count;
1115 }
1116 
1117 static const struct file_operations fops_wow = {
1118 	.read = read_file_wow,
1119 	.write = write_file_wow,
1120 	.open = simple_open,
1121 	.owner = THIS_MODULE,
1122 	.llseek = default_llseek,
1123 };
1124 
1125 #endif
1126 
1127 static ssize_t read_file_tpc(struct file *file, char __user *user_buf,
1128 			     size_t count, loff_t *ppos)
1129 {
1130 	struct ath_softc *sc = file->private_data;
1131 	struct ath_hw *ah = sc->sc_ah;
1132 	unsigned int len = 0, size = 32;
1133 	ssize_t retval;
1134 	char *buf;
1135 
1136 	buf = kzalloc(size, GFP_KERNEL);
1137 	if (!buf)
1138 		return -ENOMEM;
1139 
1140 	len += scnprintf(buf + len, size - len, "%s\n",
1141 			 ah->tpc_enabled ? "ENABLED" : "DISABLED");
1142 
1143 	if (len > size)
1144 		len = size;
1145 
1146 	retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
1147 	kfree(buf);
1148 
1149 	return retval;
1150 }
1151 
1152 static ssize_t write_file_tpc(struct file *file, const char __user *user_buf,
1153 			      size_t count, loff_t *ppos)
1154 {
1155 	struct ath_softc *sc = file->private_data;
1156 	struct ath_hw *ah = sc->sc_ah;
1157 	unsigned long val;
1158 	char buf[32];
1159 	ssize_t len;
1160 	bool tpc_enabled;
1161 
1162 	len = min(count, sizeof(buf) - 1);
1163 	if (copy_from_user(buf, user_buf, len))
1164 		return -EFAULT;
1165 
1166 	buf[len] = '\0';
1167 	if (kstrtoul(buf, 0, &val))
1168 		return -EINVAL;
1169 
1170 	if (val > 1)
1171 		return -EINVAL;
1172 
1173 	tpc_enabled = !!val;
1174 
1175 	if (tpc_enabled != ah->tpc_enabled) {
1176 		ah->tpc_enabled = tpc_enabled;
1177 
1178 		mutex_lock(&sc->mutex);
1179 		ath9k_set_txpower(sc, NULL);
1180 		mutex_unlock(&sc->mutex);
1181 	}
1182 
1183 	return count;
1184 }
1185 
1186 static const struct file_operations fops_tpc = {
1187 	.read = read_file_tpc,
1188 	.write = write_file_tpc,
1189 	.open = simple_open,
1190 	.owner = THIS_MODULE,
1191 	.llseek = default_llseek,
1192 };
1193 
1194 static ssize_t read_file_nf_override(struct file *file,
1195 				     char __user *user_buf,
1196 				     size_t count, loff_t *ppos)
1197 {
1198 	struct ath_softc *sc = file->private_data;
1199 	struct ath_hw *ah = sc->sc_ah;
1200 	char buf[32];
1201 	unsigned int len;
1202 
1203 	if (ah->nf_override == 0)
1204 		len = sprintf(buf, "off\n");
1205 	else
1206 		len = sprintf(buf, "%d\n", ah->nf_override);
1207 
1208 	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
1209 }
1210 
1211 static ssize_t write_file_nf_override(struct file *file,
1212 				      const char __user *user_buf,
1213 				      size_t count, loff_t *ppos)
1214 {
1215 	struct ath_softc *sc = file->private_data;
1216 	struct ath_hw *ah = sc->sc_ah;
1217 	long val;
1218 	char buf[32];
1219 	ssize_t len;
1220 
1221 	len = min(count, sizeof(buf) - 1);
1222 	if (copy_from_user(buf, user_buf, len))
1223 		return -EFAULT;
1224 
1225 	buf[len] = '\0';
1226 	if (strncmp("off", buf, 3) == 0)
1227 		val = 0;
1228 	else if (kstrtol(buf, 0, &val))
1229 		return -EINVAL;
1230 
1231 	if (val > 0)
1232 		return -EINVAL;
1233 
1234 	if (val < -120)
1235 		return -EINVAL;
1236 
1237 	ah->nf_override = val;
1238 
1239 	if (ah->curchan)
1240 		ath9k_hw_loadnf(ah, ah->curchan);
1241 
1242 	return count;
1243 }
1244 
1245 static const struct file_operations fops_nf_override = {
1246 	.read = read_file_nf_override,
1247 	.write = write_file_nf_override,
1248 	.open = simple_open,
1249 	.owner = THIS_MODULE,
1250 	.llseek = default_llseek,
1251 };
1252 
1253 /* Ethtool support for get-stats */
1254 
1255 #define AMKSTR(nm) #nm "_BE", #nm "_BK", #nm "_VI", #nm "_VO"
1256 static const char ath9k_gstrings_stats[][ETH_GSTRING_LEN] = {
1257 	"tx_pkts_nic",
1258 	"tx_bytes_nic",
1259 	"rx_pkts_nic",
1260 	"rx_bytes_nic",
1261 	AMKSTR(d_tx_pkts),
1262 	AMKSTR(d_tx_bytes),
1263 	AMKSTR(d_tx_mpdus_queued),
1264 	AMKSTR(d_tx_mpdus_completed),
1265 	AMKSTR(d_tx_mpdu_xretries),
1266 	AMKSTR(d_tx_aggregates),
1267 	AMKSTR(d_tx_ampdus_queued_hw),
1268 	AMKSTR(d_tx_ampdus_completed),
1269 	AMKSTR(d_tx_ampdu_retries),
1270 	AMKSTR(d_tx_ampdu_xretries),
1271 	AMKSTR(d_tx_fifo_underrun),
1272 	AMKSTR(d_tx_op_exceeded),
1273 	AMKSTR(d_tx_timer_expiry),
1274 	AMKSTR(d_tx_desc_cfg_err),
1275 	AMKSTR(d_tx_data_underrun),
1276 	AMKSTR(d_tx_delim_underrun),
1277 	"d_rx_crc_err",
1278 	"d_rx_decrypt_crc_err",
1279 	"d_rx_phy_err",
1280 	"d_rx_mic_err",
1281 	"d_rx_pre_delim_crc_err",
1282 	"d_rx_post_delim_crc_err",
1283 	"d_rx_decrypt_busy_err",
1284 
1285 	"d_rx_phyerr_radar",
1286 	"d_rx_phyerr_ofdm_timing",
1287 	"d_rx_phyerr_cck_timing",
1288 
1289 };
1290 #define ATH9K_SSTATS_LEN ARRAY_SIZE(ath9k_gstrings_stats)
1291 
1292 void ath9k_get_et_strings(struct ieee80211_hw *hw,
1293 			  struct ieee80211_vif *vif,
1294 			  u32 sset, u8 *data)
1295 {
1296 	if (sset == ETH_SS_STATS)
1297 		memcpy(data, *ath9k_gstrings_stats,
1298 		       sizeof(ath9k_gstrings_stats));
1299 }
1300 
1301 int ath9k_get_et_sset_count(struct ieee80211_hw *hw,
1302 			    struct ieee80211_vif *vif, int sset)
1303 {
1304 	if (sset == ETH_SS_STATS)
1305 		return ATH9K_SSTATS_LEN;
1306 	return 0;
1307 }
1308 
1309 #define AWDATA(elem)							\
1310 	do {								\
1311 		data[i++] = sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_BE)].elem; \
1312 		data[i++] = sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_BK)].elem; \
1313 		data[i++] = sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_VI)].elem; \
1314 		data[i++] = sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_VO)].elem; \
1315 	} while (0)
1316 
1317 #define AWDATA_RX(elem)						\
1318 	do {							\
1319 		data[i++] = sc->debug.stats.rxstats.elem;	\
1320 	} while (0)
1321 
1322 void ath9k_get_et_stats(struct ieee80211_hw *hw,
1323 			struct ieee80211_vif *vif,
1324 			struct ethtool_stats *stats, u64 *data)
1325 {
1326 	struct ath_softc *sc = hw->priv;
1327 	int i = 0;
1328 
1329 	data[i++] = (sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_BE)].tx_pkts_all +
1330 		     sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_BK)].tx_pkts_all +
1331 		     sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_VI)].tx_pkts_all +
1332 		     sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_VO)].tx_pkts_all);
1333 	data[i++] = (sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_BE)].tx_bytes_all +
1334 		     sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_BK)].tx_bytes_all +
1335 		     sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_VI)].tx_bytes_all +
1336 		     sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_VO)].tx_bytes_all);
1337 	AWDATA_RX(rx_pkts_all);
1338 	AWDATA_RX(rx_bytes_all);
1339 
1340 	AWDATA(tx_pkts_all);
1341 	AWDATA(tx_bytes_all);
1342 	AWDATA(queued);
1343 	AWDATA(completed);
1344 	AWDATA(xretries);
1345 	AWDATA(a_aggr);
1346 	AWDATA(a_queued_hw);
1347 	AWDATA(a_completed);
1348 	AWDATA(a_retries);
1349 	AWDATA(a_xretries);
1350 	AWDATA(fifo_underrun);
1351 	AWDATA(xtxop);
1352 	AWDATA(timer_exp);
1353 	AWDATA(desc_cfg_err);
1354 	AWDATA(data_underrun);
1355 	AWDATA(delim_underrun);
1356 
1357 	AWDATA_RX(crc_err);
1358 	AWDATA_RX(decrypt_crc_err);
1359 	AWDATA_RX(phy_err);
1360 	AWDATA_RX(mic_err);
1361 	AWDATA_RX(pre_delim_crc_err);
1362 	AWDATA_RX(post_delim_crc_err);
1363 	AWDATA_RX(decrypt_busy_err);
1364 
1365 	AWDATA_RX(phy_err_stats[ATH9K_PHYERR_RADAR]);
1366 	AWDATA_RX(phy_err_stats[ATH9K_PHYERR_OFDM_TIMING]);
1367 	AWDATA_RX(phy_err_stats[ATH9K_PHYERR_CCK_TIMING]);
1368 
1369 	WARN_ON(i != ATH9K_SSTATS_LEN);
1370 }
1371 
1372 void ath9k_deinit_debug(struct ath_softc *sc)
1373 {
1374 	ath9k_cmn_spectral_deinit_debug(&sc->spec_priv);
1375 }
1376 
1377 int ath9k_init_debug(struct ath_hw *ah)
1378 {
1379 	struct ath_common *common = ath9k_hw_common(ah);
1380 	struct ath_softc *sc = (struct ath_softc *) common->priv;
1381 
1382 	sc->debug.debugfs_phy = debugfs_create_dir("ath9k",
1383 						   sc->hw->wiphy->debugfsdir);
1384 	if (!sc->debug.debugfs_phy)
1385 		return -ENOMEM;
1386 
1387 #ifdef CONFIG_ATH_DEBUG
1388 	debugfs_create_file("debug", 0600, sc->debug.debugfs_phy,
1389 			    sc, &fops_debug);
1390 #endif
1391 
1392 	ath9k_dfs_init_debug(sc);
1393 	ath9k_tx99_init_debug(sc);
1394 	ath9k_cmn_spectral_init_debug(&sc->spec_priv, sc->debug.debugfs_phy);
1395 
1396 	debugfs_create_devm_seqfile(sc->dev, "dma", sc->debug.debugfs_phy,
1397 				    read_file_dma);
1398 	debugfs_create_devm_seqfile(sc->dev, "interrupt", sc->debug.debugfs_phy,
1399 				    read_file_interrupt);
1400 	debugfs_create_devm_seqfile(sc->dev, "xmit", sc->debug.debugfs_phy,
1401 				    read_file_xmit);
1402 	debugfs_create_devm_seqfile(sc->dev, "queues", sc->debug.debugfs_phy,
1403 				    read_file_queues);
1404 	debugfs_create_devm_seqfile(sc->dev, "misc", sc->debug.debugfs_phy,
1405 				    read_file_misc);
1406 	debugfs_create_devm_seqfile(sc->dev, "reset", sc->debug.debugfs_phy,
1407 				    read_file_reset);
1408 
1409 	ath9k_cmn_debug_recv(sc->debug.debugfs_phy, &sc->debug.stats.rxstats);
1410 	ath9k_cmn_debug_phy_err(sc->debug.debugfs_phy, &sc->debug.stats.rxstats);
1411 
1412 	debugfs_create_u8("rx_chainmask", 0400, sc->debug.debugfs_phy,
1413 			  &ah->rxchainmask);
1414 	debugfs_create_u8("tx_chainmask", 0400, sc->debug.debugfs_phy,
1415 			  &ah->txchainmask);
1416 	debugfs_create_file("ani", 0600,
1417 			    sc->debug.debugfs_phy, sc, &fops_ani);
1418 	debugfs_create_bool("paprd", 0600, sc->debug.debugfs_phy,
1419 			    &sc->sc_ah->config.enable_paprd);
1420 	debugfs_create_file("regidx", 0600, sc->debug.debugfs_phy,
1421 			    sc, &fops_regidx);
1422 	debugfs_create_file("regval", 0600, sc->debug.debugfs_phy,
1423 			    sc, &fops_regval);
1424 	debugfs_create_bool("ignore_extcca", 0600,
1425 			    sc->debug.debugfs_phy,
1426 			    &ah->config.cwm_ignore_extcca);
1427 	debugfs_create_file("regdump", 0400, sc->debug.debugfs_phy, sc,
1428 			    &fops_regdump);
1429 	debugfs_create_devm_seqfile(sc->dev, "dump_nfcal",
1430 				    sc->debug.debugfs_phy,
1431 				    read_file_dump_nfcal);
1432 
1433 	ath9k_cmn_debug_base_eeprom(sc->debug.debugfs_phy, sc->sc_ah);
1434 	ath9k_cmn_debug_modal_eeprom(sc->debug.debugfs_phy, sc->sc_ah);
1435 
1436 	debugfs_create_u32("gpio_mask", 0600,
1437 			   sc->debug.debugfs_phy, &sc->sc_ah->gpio_mask);
1438 	debugfs_create_u32("gpio_val", 0600,
1439 			   sc->debug.debugfs_phy, &sc->sc_ah->gpio_val);
1440 	debugfs_create_file("antenna_diversity", 0400,
1441 			    sc->debug.debugfs_phy, sc, &fops_antenna_diversity);
1442 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
1443 	debugfs_create_file("bt_ant_diversity", 0600,
1444 			    sc->debug.debugfs_phy, sc, &fops_bt_ant_diversity);
1445 	debugfs_create_file("btcoex", 0400, sc->debug.debugfs_phy, sc,
1446 			    &fops_btcoex);
1447 #endif
1448 
1449 #ifdef CONFIG_ATH9K_WOW
1450 	debugfs_create_file("wow", 0600, sc->debug.debugfs_phy, sc, &fops_wow);
1451 #endif
1452 
1453 #ifdef CONFIG_ATH9K_DYNACK
1454 	debugfs_create_file("ack_to", 0400, sc->debug.debugfs_phy,
1455 			    sc, &fops_ackto);
1456 #endif
1457 	debugfs_create_file("tpc", 0600, sc->debug.debugfs_phy, sc, &fops_tpc);
1458 
1459 	debugfs_create_u16("airtime_flags", 0600,
1460 			   sc->debug.debugfs_phy, &sc->airtime_flags);
1461 
1462 	debugfs_create_file("nf_override", 0600,
1463 			    sc->debug.debugfs_phy, sc, &fops_nf_override);
1464 
1465 	return 0;
1466 }
1467