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 ath_softc *sc = file->private;
407 	struct ath_hw *ah = sc->sc_ah;
408 	u32 val[ATH9K_NUM_DMA_DEBUG_REGS];
409 	int i, qcuOffset = 0, dcuOffset = 0;
410 	u32 *qcuBase = &val[0], *dcuBase = &val[4];
411 
412 	ath9k_ps_wakeup(sc);
413 
414 	REG_WRITE_D(ah, AR_MACMISC,
415 		  ((AR_MACMISC_DMA_OBS_LINE_8 << AR_MACMISC_DMA_OBS_S) |
416 		   (AR_MACMISC_MISC_OBS_BUS_1 <<
417 		    AR_MACMISC_MISC_OBS_BUS_MSB_S)));
418 
419 	seq_puts(file, "Raw DMA Debug values:\n");
420 
421 	for (i = 0; i < ATH9K_NUM_DMA_DEBUG_REGS; i++) {
422 		if (i % 4 == 0)
423 			seq_puts(file, "\n");
424 
425 		val[i] = REG_READ_D(ah, AR_DMADBG_0 + (i * sizeof(u32)));
426 		seq_printf(file, "%d: %08x ", i, val[i]);
427 	}
428 
429 	seq_puts(file, "\n\n");
430 	seq_puts(file, "Num QCU: chain_st fsp_ok fsp_st DCU: chain_st\n");
431 
432 	for (i = 0; i < ATH9K_NUM_QUEUES; i++, qcuOffset += 4, dcuOffset += 5) {
433 		if (i == 8) {
434 			qcuOffset = 0;
435 			qcuBase++;
436 		}
437 
438 		if (i == 6) {
439 			dcuOffset = 0;
440 			dcuBase++;
441 		}
442 
443 		seq_printf(file, "%2d          %2x      %1x     %2x           %2x\n",
444 			   i, (*qcuBase & (0x7 << qcuOffset)) >> qcuOffset,
445 			   (*qcuBase & (0x8 << qcuOffset)) >> (qcuOffset + 3),
446 			   (val[2] & (0x7 << (i * 3))) >> (i * 3),
447 			   (*dcuBase & (0x1f << dcuOffset)) >> dcuOffset);
448 	}
449 
450 	seq_puts(file, "\n");
451 
452 	seq_printf(file, "qcu_stitch state:   %2x    qcu_fetch state:        %2x\n",
453 		   (val[3] & 0x003c0000) >> 18, (val[3] & 0x03c00000) >> 22);
454 	seq_printf(file, "qcu_complete state: %2x    dcu_complete state:     %2x\n",
455 		   (val[3] & 0x1c000000) >> 26, (val[6] & 0x3));
456 	seq_printf(file, "dcu_arb state:      %2x    dcu_fp state:           %2x\n",
457 		   (val[5] & 0x06000000) >> 25, (val[5] & 0x38000000) >> 27);
458 	seq_printf(file, "chan_idle_dur:     %3d    chan_idle_dur_valid:     %1d\n",
459 		   (val[6] & 0x000003fc) >> 2, (val[6] & 0x00000400) >> 10);
460 	seq_printf(file, "txfifo_valid_0:      %1d    txfifo_valid_1:          %1d\n",
461 		   (val[6] & 0x00000800) >> 11, (val[6] & 0x00001000) >> 12);
462 	seq_printf(file, "txfifo_dcu_num_0:   %2d    txfifo_dcu_num_1:       %2d\n",
463 		   (val[6] & 0x0001e000) >> 13, (val[6] & 0x001e0000) >> 17);
464 
465 	seq_printf(file, "pcu observe: 0x%x\n", REG_READ_D(ah, AR_OBS_BUS_1));
466 	seq_printf(file, "AR_CR: 0x%x\n", REG_READ_D(ah, AR_CR));
467 
468 	ath9k_ps_restore(sc);
469 
470 	return 0;
471 }
472 
473 static int open_file_dma(struct inode *inode, struct file *f)
474 {
475 	return single_open(f, read_file_dma, inode->i_private);
476 }
477 
478 static const struct file_operations fops_dma = {
479 	.open = open_file_dma,
480 	.read = seq_read,
481 	.owner = THIS_MODULE,
482 	.llseek = seq_lseek,
483 	.release = single_release,
484 };
485 
486 
487 void ath_debug_stat_interrupt(struct ath_softc *sc, enum ath9k_int status)
488 {
489 	if (status)
490 		sc->debug.stats.istats.total++;
491 	if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
492 		if (status & ATH9K_INT_RXLP)
493 			sc->debug.stats.istats.rxlp++;
494 		if (status & ATH9K_INT_RXHP)
495 			sc->debug.stats.istats.rxhp++;
496 		if (status & ATH9K_INT_BB_WATCHDOG)
497 			sc->debug.stats.istats.bb_watchdog++;
498 	} else {
499 		if (status & ATH9K_INT_RX)
500 			sc->debug.stats.istats.rxok++;
501 	}
502 	if (status & ATH9K_INT_RXEOL)
503 		sc->debug.stats.istats.rxeol++;
504 	if (status & ATH9K_INT_RXORN)
505 		sc->debug.stats.istats.rxorn++;
506 	if (status & ATH9K_INT_TX)
507 		sc->debug.stats.istats.txok++;
508 	if (status & ATH9K_INT_TXURN)
509 		sc->debug.stats.istats.txurn++;
510 	if (status & ATH9K_INT_RXPHY)
511 		sc->debug.stats.istats.rxphyerr++;
512 	if (status & ATH9K_INT_RXKCM)
513 		sc->debug.stats.istats.rx_keycache_miss++;
514 	if (status & ATH9K_INT_SWBA)
515 		sc->debug.stats.istats.swba++;
516 	if (status & ATH9K_INT_BMISS)
517 		sc->debug.stats.istats.bmiss++;
518 	if (status & ATH9K_INT_BNR)
519 		sc->debug.stats.istats.bnr++;
520 	if (status & ATH9K_INT_CST)
521 		sc->debug.stats.istats.cst++;
522 	if (status & ATH9K_INT_GTT)
523 		sc->debug.stats.istats.gtt++;
524 	if (status & ATH9K_INT_TIM)
525 		sc->debug.stats.istats.tim++;
526 	if (status & ATH9K_INT_CABEND)
527 		sc->debug.stats.istats.cabend++;
528 	if (status & ATH9K_INT_DTIMSYNC)
529 		sc->debug.stats.istats.dtimsync++;
530 	if (status & ATH9K_INT_DTIM)
531 		sc->debug.stats.istats.dtim++;
532 	if (status & ATH9K_INT_TSFOOR)
533 		sc->debug.stats.istats.tsfoor++;
534 	if (status & ATH9K_INT_MCI)
535 		sc->debug.stats.istats.mci++;
536 	if (status & ATH9K_INT_GENTIMER)
537 		sc->debug.stats.istats.gen_timer++;
538 }
539 
540 static int read_file_interrupt(struct seq_file *file, void *data)
541 {
542 	struct ath_softc *sc = file->private;
543 
544 #define PR_IS(a, s)						\
545 	do {							\
546 		seq_printf(file, "%21s: %10u\n", a,		\
547 			   sc->debug.stats.istats.s);		\
548 	} while (0)
549 
550 	if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
551 		PR_IS("RXLP", rxlp);
552 		PR_IS("RXHP", rxhp);
553 		PR_IS("WATHDOG", bb_watchdog);
554 	} else {
555 		PR_IS("RX", rxok);
556 	}
557 	PR_IS("RXEOL", rxeol);
558 	PR_IS("RXORN", rxorn);
559 	PR_IS("TX", txok);
560 	PR_IS("TXURN", txurn);
561 	PR_IS("MIB", mib);
562 	PR_IS("RXPHY", rxphyerr);
563 	PR_IS("RXKCM", rx_keycache_miss);
564 	PR_IS("SWBA", swba);
565 	PR_IS("BMISS", bmiss);
566 	PR_IS("BNR", bnr);
567 	PR_IS("CST", cst);
568 	PR_IS("GTT", gtt);
569 	PR_IS("TIM", tim);
570 	PR_IS("CABEND", cabend);
571 	PR_IS("DTIMSYNC", dtimsync);
572 	PR_IS("DTIM", dtim);
573 	PR_IS("TSFOOR", tsfoor);
574 	PR_IS("MCI", mci);
575 	PR_IS("GENTIMER", gen_timer);
576 	PR_IS("TOTAL", total);
577 
578 	seq_puts(file, "SYNC_CAUSE stats:\n");
579 
580 	PR_IS("Sync-All", sync_cause_all);
581 	PR_IS("RTC-IRQ", sync_rtc_irq);
582 	PR_IS("MAC-IRQ", sync_mac_irq);
583 	PR_IS("EEPROM-Illegal-Access", eeprom_illegal_access);
584 	PR_IS("APB-Timeout", apb_timeout);
585 	PR_IS("PCI-Mode-Conflict", pci_mode_conflict);
586 	PR_IS("HOST1-Fatal", host1_fatal);
587 	PR_IS("HOST1-Perr", host1_perr);
588 	PR_IS("TRCV-FIFO-Perr", trcv_fifo_perr);
589 	PR_IS("RADM-CPL-EP", radm_cpl_ep);
590 	PR_IS("RADM-CPL-DLLP-Abort", radm_cpl_dllp_abort);
591 	PR_IS("RADM-CPL-TLP-Abort", radm_cpl_tlp_abort);
592 	PR_IS("RADM-CPL-ECRC-Err", radm_cpl_ecrc_err);
593 	PR_IS("RADM-CPL-Timeout", radm_cpl_timeout);
594 	PR_IS("Local-Bus-Timeout", local_timeout);
595 	PR_IS("PM-Access", pm_access);
596 	PR_IS("MAC-Awake", mac_awake);
597 	PR_IS("MAC-Asleep", mac_asleep);
598 	PR_IS("MAC-Sleep-Access", mac_sleep_access);
599 
600 	return 0;
601 }
602 
603 static int open_file_interrupt(struct inode *inode, struct file *f)
604 {
605 	return single_open(f, read_file_interrupt, inode->i_private);
606 }
607 
608 static const struct file_operations fops_interrupt = {
609 	.read = seq_read,
610 	.open = open_file_interrupt,
611 	.owner = THIS_MODULE,
612 	.llseek = seq_lseek,
613 	.release = single_release,
614 };
615 
616 static int read_file_xmit(struct seq_file *file, void *data)
617 {
618 	struct ath_softc *sc = file->private;
619 
620 	seq_printf(file, "%30s %10s%10s%10s\n\n", "BE", "BK", "VI", "VO");
621 
622 	PR("MPDUs Queued:    ", queued);
623 	PR("MPDUs Completed: ", completed);
624 	PR("MPDUs XRetried:  ", xretries);
625 	PR("Aggregates:      ", a_aggr);
626 	PR("AMPDUs Queued HW:", a_queued_hw);
627 	PR("AMPDUs Queued SW:", a_queued_sw);
628 	PR("AMPDUs Completed:", a_completed);
629 	PR("AMPDUs Retried:  ", a_retries);
630 	PR("AMPDUs XRetried: ", a_xretries);
631 	PR("TXERR Filtered:  ", txerr_filtered);
632 	PR("FIFO Underrun:   ", fifo_underrun);
633 	PR("TXOP Exceeded:   ", xtxop);
634 	PR("TXTIMER Expiry:  ", timer_exp);
635 	PR("DESC CFG Error:  ", desc_cfg_err);
636 	PR("DATA Underrun:   ", data_underrun);
637 	PR("DELIM Underrun:  ", delim_underrun);
638 	PR("TX-Pkts-All:     ", tx_pkts_all);
639 	PR("TX-Bytes-All:    ", tx_bytes_all);
640 	PR("HW-put-tx-buf:   ", puttxbuf);
641 	PR("HW-tx-start:     ", txstart);
642 	PR("HW-tx-proc-desc: ", txprocdesc);
643 	PR("TX-Failed:       ", txfailed);
644 
645 	return 0;
646 }
647 
648 static void print_queue(struct ath_softc *sc, struct ath_txq *txq,
649 			struct seq_file *file)
650 {
651 	ath_txq_lock(sc, txq);
652 
653 	seq_printf(file, "%s: %d ", "qnum", txq->axq_qnum);
654 	seq_printf(file, "%s: %2d ", "qdepth", txq->axq_depth);
655 	seq_printf(file, "%s: %2d ", "ampdu-depth", txq->axq_ampdu_depth);
656 	seq_printf(file, "%s: %3d ", "pending", txq->pending_frames);
657 	seq_printf(file, "%s: %d\n", "stopped", txq->stopped);
658 
659 	ath_txq_unlock(sc, txq);
660 }
661 
662 static int read_file_queues(struct seq_file *file, void *data)
663 {
664 	struct ath_softc *sc = file->private;
665 	struct ath_txq *txq;
666 	int i;
667 	static const char *qname[4] = {
668 		"VO", "VI", "BE", "BK"
669 	};
670 
671 	for (i = 0; i < IEEE80211_NUM_ACS; i++) {
672 		txq = sc->tx.txq_map[i];
673 		seq_printf(file, "(%s):  ", qname[i]);
674 		print_queue(sc, txq, file);
675 	}
676 
677 	seq_puts(file, "(CAB): ");
678 	print_queue(sc, sc->beacon.cabq, file);
679 
680 	return 0;
681 }
682 
683 static int read_file_misc(struct seq_file *file, void *data)
684 {
685 	struct ath_softc *sc = file->private;
686 	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
687 	struct ath9k_vif_iter_data iter_data;
688 	struct ath_chanctx *ctx;
689 	unsigned int reg;
690 	u32 rxfilter, i;
691 
692 	seq_printf(file, "BSSID: %pM\n", common->curbssid);
693 	seq_printf(file, "BSSID-MASK: %pM\n", common->bssidmask);
694 	seq_printf(file, "OPMODE: %s\n",
695 		   ath_opmode_to_string(sc->sc_ah->opmode));
696 
697 	ath9k_ps_wakeup(sc);
698 	rxfilter = ath9k_hw_getrxfilter(sc->sc_ah);
699 	ath9k_ps_restore(sc);
700 
701 	seq_printf(file, "RXFILTER: 0x%x", rxfilter);
702 
703 	if (rxfilter & ATH9K_RX_FILTER_UCAST)
704 		seq_puts(file, " UCAST");
705 	if (rxfilter & ATH9K_RX_FILTER_MCAST)
706 		seq_puts(file, " MCAST");
707 	if (rxfilter & ATH9K_RX_FILTER_BCAST)
708 		seq_puts(file, " BCAST");
709 	if (rxfilter & ATH9K_RX_FILTER_CONTROL)
710 		seq_puts(file, " CONTROL");
711 	if (rxfilter & ATH9K_RX_FILTER_BEACON)
712 		seq_puts(file, " BEACON");
713 	if (rxfilter & ATH9K_RX_FILTER_PROM)
714 		seq_puts(file, " PROM");
715 	if (rxfilter & ATH9K_RX_FILTER_PROBEREQ)
716 		seq_puts(file, " PROBEREQ");
717 	if (rxfilter & ATH9K_RX_FILTER_PHYERR)
718 		seq_puts(file, " PHYERR");
719 	if (rxfilter & ATH9K_RX_FILTER_MYBEACON)
720 		seq_puts(file, " MYBEACON");
721 	if (rxfilter & ATH9K_RX_FILTER_COMP_BAR)
722 		seq_puts(file, " COMP_BAR");
723 	if (rxfilter & ATH9K_RX_FILTER_PSPOLL)
724 		seq_puts(file, " PSPOLL");
725 	if (rxfilter & ATH9K_RX_FILTER_PHYRADAR)
726 		seq_puts(file, " PHYRADAR");
727 	if (rxfilter & ATH9K_RX_FILTER_MCAST_BCAST_ALL)
728 		seq_puts(file, " MCAST_BCAST_ALL");
729 	if (rxfilter & ATH9K_RX_FILTER_CONTROL_WRAPPER)
730 		seq_puts(file, " CONTROL_WRAPPER");
731 
732 	seq_puts(file, "\n");
733 
734 	reg = sc->sc_ah->imask;
735 
736 	seq_printf(file, "INTERRUPT-MASK: 0x%x", reg);
737 
738 	if (reg & ATH9K_INT_SWBA)
739 		seq_puts(file, " SWBA");
740 	if (reg & ATH9K_INT_BMISS)
741 		seq_puts(file, " BMISS");
742 	if (reg & ATH9K_INT_CST)
743 		seq_puts(file, " CST");
744 	if (reg & ATH9K_INT_RX)
745 		seq_puts(file, " RX");
746 	if (reg & ATH9K_INT_RXHP)
747 		seq_puts(file, " RXHP");
748 	if (reg & ATH9K_INT_RXLP)
749 		seq_puts(file, " RXLP");
750 	if (reg & ATH9K_INT_BB_WATCHDOG)
751 		seq_puts(file, " BB_WATCHDOG");
752 
753 	seq_puts(file, "\n");
754 
755 	i = 0;
756 	ath_for_each_chanctx(sc, ctx) {
757 		if (list_empty(&ctx->vifs))
758 			continue;
759 		ath9k_calculate_iter_data(sc, ctx, &iter_data);
760 
761 		seq_printf(file,
762 			   "VIFS: CTX %i(%i) AP: %i STA: %i MESH: %i WDS: %i",
763 			   i++, (int)(ctx->assigned), iter_data.naps,
764 			   iter_data.nstations,
765 			   iter_data.nmeshes, iter_data.nwds);
766 		seq_printf(file, " ADHOC: %i TOTAL: %hi BEACON-VIF: %hi\n",
767 			   iter_data.nadhocs, sc->cur_chan->nvifs,
768 			   sc->nbcnvifs);
769 	}
770 
771 	return 0;
772 }
773 
774 static int read_file_reset(struct seq_file *file, void *data)
775 {
776 	struct ath_softc *sc = file->private;
777 	static const char * const reset_cause[__RESET_TYPE_MAX] = {
778 		[RESET_TYPE_BB_HANG] = "Baseband Hang",
779 		[RESET_TYPE_BB_WATCHDOG] = "Baseband Watchdog",
780 		[RESET_TYPE_FATAL_INT] = "Fatal HW Error",
781 		[RESET_TYPE_TX_ERROR] = "TX HW error",
782 		[RESET_TYPE_TX_GTT] = "Transmit timeout",
783 		[RESET_TYPE_TX_HANG] = "TX Path Hang",
784 		[RESET_TYPE_PLL_HANG] = "PLL RX Hang",
785 		[RESET_TYPE_MAC_HANG] = "MAC Hang",
786 		[RESET_TYPE_BEACON_STUCK] = "Stuck Beacon",
787 		[RESET_TYPE_MCI] = "MCI Reset",
788 		[RESET_TYPE_CALIBRATION] = "Calibration error",
789 	};
790 	int i;
791 
792 	for (i = 0; i < ARRAY_SIZE(reset_cause); i++) {
793 		if (!reset_cause[i])
794 		    continue;
795 
796 		seq_printf(file, "%17s: %2d\n", reset_cause[i],
797 			   sc->debug.stats.reset[i]);
798 	}
799 
800 	return 0;
801 }
802 
803 void ath_debug_stat_tx(struct ath_softc *sc, struct ath_buf *bf,
804 		       struct ath_tx_status *ts, struct ath_txq *txq,
805 		       unsigned int flags)
806 {
807 	int qnum = txq->axq_qnum;
808 
809 	TX_STAT_INC(qnum, tx_pkts_all);
810 	sc->debug.stats.txstats[qnum].tx_bytes_all += bf->bf_mpdu->len;
811 
812 	if (bf_isampdu(bf)) {
813 		if (flags & ATH_TX_ERROR)
814 			TX_STAT_INC(qnum, a_xretries);
815 		else
816 			TX_STAT_INC(qnum, a_completed);
817 	} else {
818 		if (ts->ts_status & ATH9K_TXERR_XRETRY)
819 			TX_STAT_INC(qnum, xretries);
820 		else
821 			TX_STAT_INC(qnum, completed);
822 	}
823 
824 	if (ts->ts_status & ATH9K_TXERR_FILT)
825 		TX_STAT_INC(qnum, txerr_filtered);
826 	if (ts->ts_status & ATH9K_TXERR_FIFO)
827 		TX_STAT_INC(qnum, fifo_underrun);
828 	if (ts->ts_status & ATH9K_TXERR_XTXOP)
829 		TX_STAT_INC(qnum, xtxop);
830 	if (ts->ts_status & ATH9K_TXERR_TIMER_EXPIRED)
831 		TX_STAT_INC(qnum, timer_exp);
832 	if (ts->ts_flags & ATH9K_TX_DESC_CFG_ERR)
833 		TX_STAT_INC(qnum, desc_cfg_err);
834 	if (ts->ts_flags & ATH9K_TX_DATA_UNDERRUN)
835 		TX_STAT_INC(qnum, data_underrun);
836 	if (ts->ts_flags & ATH9K_TX_DELIM_UNDERRUN)
837 		TX_STAT_INC(qnum, delim_underrun);
838 }
839 
840 static int open_file_xmit(struct inode *inode, struct file *f)
841 {
842 	return single_open(f, read_file_xmit, inode->i_private);
843 }
844 
845 static const struct file_operations fops_xmit = {
846 	.read = seq_read,
847 	.open = open_file_xmit,
848 	.owner = THIS_MODULE,
849 	.llseek = seq_lseek,
850 	.release = single_release,
851 };
852 
853 static int open_file_queues(struct inode *inode, struct file *f)
854 {
855 	return single_open(f, read_file_queues, inode->i_private);
856 }
857 
858 static const struct file_operations fops_queues = {
859 	.read = seq_read,
860 	.open = open_file_queues,
861 	.owner = THIS_MODULE,
862 	.llseek = seq_lseek,
863 	.release = single_release,
864 };
865 
866 static int open_file_misc(struct inode *inode, struct file *f)
867 {
868 	return single_open(f, read_file_misc, inode->i_private);
869 }
870 
871 static const struct file_operations fops_misc = {
872 	.read = seq_read,
873 	.open = open_file_misc,
874 	.owner = THIS_MODULE,
875 	.llseek = seq_lseek,
876 	.release = single_release,
877 };
878 
879 static int open_file_reset(struct inode *inode, struct file *f)
880 {
881 	return single_open(f, read_file_reset, inode->i_private);
882 }
883 
884 static const struct file_operations fops_reset = {
885 	.read = seq_read,
886 	.open = open_file_reset,
887 	.owner = THIS_MODULE,
888 	.llseek = seq_lseek,
889 	.release = single_release,
890 };
891 
892 void ath_debug_stat_rx(struct ath_softc *sc, struct ath_rx_status *rs)
893 {
894 	ath9k_cmn_debug_stat_rx(&sc->debug.stats.rxstats, rs);
895 }
896 
897 static ssize_t read_file_regidx(struct file *file, char __user *user_buf,
898 				size_t count, loff_t *ppos)
899 {
900 	struct ath_softc *sc = file->private_data;
901 	char buf[32];
902 	unsigned int len;
903 
904 	len = sprintf(buf, "0x%08x\n", sc->debug.regidx);
905 	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
906 }
907 
908 static ssize_t write_file_regidx(struct file *file, const char __user *user_buf,
909 				 size_t count, loff_t *ppos)
910 {
911 	struct ath_softc *sc = file->private_data;
912 	unsigned long regidx;
913 	char buf[32];
914 	ssize_t len;
915 
916 	len = min(count, sizeof(buf) - 1);
917 	if (copy_from_user(buf, user_buf, len))
918 		return -EFAULT;
919 
920 	buf[len] = '\0';
921 	if (kstrtoul(buf, 0, &regidx))
922 		return -EINVAL;
923 
924 	sc->debug.regidx = regidx;
925 	return count;
926 }
927 
928 static const struct file_operations fops_regidx = {
929 	.read = read_file_regidx,
930 	.write = write_file_regidx,
931 	.open = simple_open,
932 	.owner = THIS_MODULE,
933 	.llseek = default_llseek,
934 };
935 
936 static ssize_t read_file_regval(struct file *file, char __user *user_buf,
937 				size_t count, loff_t *ppos)
938 {
939 	struct ath_softc *sc = file->private_data;
940 	struct ath_hw *ah = sc->sc_ah;
941 	char buf[32];
942 	unsigned int len;
943 	u32 regval;
944 
945 	ath9k_ps_wakeup(sc);
946 	regval = REG_READ_D(ah, sc->debug.regidx);
947 	ath9k_ps_restore(sc);
948 	len = sprintf(buf, "0x%08x\n", regval);
949 	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
950 }
951 
952 static ssize_t write_file_regval(struct file *file, const char __user *user_buf,
953 				 size_t count, loff_t *ppos)
954 {
955 	struct ath_softc *sc = file->private_data;
956 	struct ath_hw *ah = sc->sc_ah;
957 	unsigned long regval;
958 	char buf[32];
959 	ssize_t len;
960 
961 	len = min(count, sizeof(buf) - 1);
962 	if (copy_from_user(buf, user_buf, len))
963 		return -EFAULT;
964 
965 	buf[len] = '\0';
966 	if (kstrtoul(buf, 0, &regval))
967 		return -EINVAL;
968 
969 	ath9k_ps_wakeup(sc);
970 	REG_WRITE_D(ah, sc->debug.regidx, regval);
971 	ath9k_ps_restore(sc);
972 	return count;
973 }
974 
975 static const struct file_operations fops_regval = {
976 	.read = read_file_regval,
977 	.write = write_file_regval,
978 	.open = simple_open,
979 	.owner = THIS_MODULE,
980 	.llseek = default_llseek,
981 };
982 
983 #define REGDUMP_LINE_SIZE	20
984 
985 static int open_file_regdump(struct inode *inode, struct file *file)
986 {
987 	struct ath_softc *sc = inode->i_private;
988 	unsigned int len = 0;
989 	u8 *buf;
990 	int i;
991 	unsigned long num_regs, regdump_len, max_reg_offset;
992 
993 	max_reg_offset = AR_SREV_9300_20_OR_LATER(sc->sc_ah) ? 0x16bd4 : 0xb500;
994 	num_regs = max_reg_offset / 4 + 1;
995 	regdump_len = num_regs * REGDUMP_LINE_SIZE + 1;
996 	buf = vmalloc(regdump_len);
997 	if (!buf)
998 		return -ENOMEM;
999 
1000 	ath9k_ps_wakeup(sc);
1001 	for (i = 0; i < num_regs; i++)
1002 		len += scnprintf(buf + len, regdump_len - len,
1003 			"0x%06x 0x%08x\n", i << 2, REG_READ(sc->sc_ah, i << 2));
1004 	ath9k_ps_restore(sc);
1005 
1006 	file->private_data = buf;
1007 
1008 	return 0;
1009 }
1010 
1011 static const struct file_operations fops_regdump = {
1012 	.open = open_file_regdump,
1013 	.read = ath9k_debugfs_read_buf,
1014 	.release = ath9k_debugfs_release_buf,
1015 	.owner = THIS_MODULE,
1016 	.llseek = default_llseek,/* read accesses f_pos */
1017 };
1018 
1019 static int read_file_dump_nfcal(struct seq_file *file, void *data)
1020 {
1021 	struct ath_softc *sc = file->private;
1022 	struct ath_hw *ah = sc->sc_ah;
1023 	struct ath9k_nfcal_hist *h = sc->cur_chan->caldata.nfCalHist;
1024 	struct ath_common *common = ath9k_hw_common(ah);
1025 	struct ieee80211_conf *conf = &common->hw->conf;
1026 	u32 i, j;
1027 	u8 chainmask = (ah->rxchainmask << 3) | ah->rxchainmask;
1028 	u8 nread;
1029 
1030 	seq_printf(file, "Channel Noise Floor : %d\n", ah->noise);
1031 	seq_puts(file, "Chain | privNF | # Readings | NF Readings\n");
1032 	for (i = 0; i < NUM_NF_READINGS; i++) {
1033 		if (!(chainmask & (1 << i)) ||
1034 		    ((i >= AR5416_MAX_CHAINS) && !conf_is_ht40(conf)))
1035 			continue;
1036 
1037 		nread = AR_PHY_CCA_FILTERWINDOW_LENGTH - h[i].invalidNFcount;
1038 		seq_printf(file, " %d\t %d\t %d\t\t", i, h[i].privNF, nread);
1039 		for (j = 0; j < nread; j++)
1040 			seq_printf(file, " %d", h[i].nfCalBuffer[j]);
1041 		seq_puts(file, "\n");
1042 	}
1043 
1044 	return 0;
1045 }
1046 
1047 static int open_file_dump_nfcal(struct inode *inode, struct file *f)
1048 {
1049 	return single_open(f, read_file_dump_nfcal, inode->i_private);
1050 }
1051 
1052 static const struct file_operations fops_dump_nfcal = {
1053 	.read = seq_read,
1054 	.open = open_file_dump_nfcal,
1055 	.owner = THIS_MODULE,
1056 	.llseek = seq_lseek,
1057 	.release = single_release,
1058 };
1059 
1060 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
1061 static ssize_t read_file_btcoex(struct file *file, char __user *user_buf,
1062 				size_t count, loff_t *ppos)
1063 {
1064 	struct ath_softc *sc = file->private_data;
1065 	u32 len = 0, size = 1500;
1066 	char *buf;
1067 	size_t retval;
1068 
1069 	buf = kzalloc(size, GFP_KERNEL);
1070 	if (buf == NULL)
1071 		return -ENOMEM;
1072 
1073 	if (!sc->sc_ah->common.btcoex_enabled) {
1074 		len = scnprintf(buf, size, "%s\n",
1075 				"BTCOEX is disabled");
1076 		goto exit;
1077 	}
1078 
1079 	len = ath9k_dump_btcoex(sc, buf, size);
1080 exit:
1081 	retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
1082 	kfree(buf);
1083 
1084 	return retval;
1085 }
1086 
1087 static const struct file_operations fops_btcoex = {
1088 	.read = read_file_btcoex,
1089 	.open = simple_open,
1090 	.owner = THIS_MODULE,
1091 	.llseek = default_llseek,
1092 };
1093 #endif
1094 
1095 #ifdef CONFIG_ATH9K_DYNACK
1096 static ssize_t read_file_ackto(struct file *file, char __user *user_buf,
1097 			       size_t count, loff_t *ppos)
1098 {
1099 	struct ath_softc *sc = file->private_data;
1100 	struct ath_hw *ah = sc->sc_ah;
1101 	char buf[32];
1102 	unsigned int len;
1103 
1104 	len = sprintf(buf, "%u %c\n", ah->dynack.ackto,
1105 		      (ah->dynack.enabled) ? 'A' : 'S');
1106 
1107 	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
1108 }
1109 
1110 static const struct file_operations fops_ackto = {
1111 	.read = read_file_ackto,
1112 	.open = simple_open,
1113 	.owner = THIS_MODULE,
1114 	.llseek = default_llseek,
1115 };
1116 #endif
1117 
1118 /* Ethtool support for get-stats */
1119 
1120 #define AMKSTR(nm) #nm "_BE", #nm "_BK", #nm "_VI", #nm "_VO"
1121 static const char ath9k_gstrings_stats[][ETH_GSTRING_LEN] = {
1122 	"tx_pkts_nic",
1123 	"tx_bytes_nic",
1124 	"rx_pkts_nic",
1125 	"rx_bytes_nic",
1126 	AMKSTR(d_tx_pkts),
1127 	AMKSTR(d_tx_bytes),
1128 	AMKSTR(d_tx_mpdus_queued),
1129 	AMKSTR(d_tx_mpdus_completed),
1130 	AMKSTR(d_tx_mpdu_xretries),
1131 	AMKSTR(d_tx_aggregates),
1132 	AMKSTR(d_tx_ampdus_queued_hw),
1133 	AMKSTR(d_tx_ampdus_queued_sw),
1134 	AMKSTR(d_tx_ampdus_completed),
1135 	AMKSTR(d_tx_ampdu_retries),
1136 	AMKSTR(d_tx_ampdu_xretries),
1137 	AMKSTR(d_tx_fifo_underrun),
1138 	AMKSTR(d_tx_op_exceeded),
1139 	AMKSTR(d_tx_timer_expiry),
1140 	AMKSTR(d_tx_desc_cfg_err),
1141 	AMKSTR(d_tx_data_underrun),
1142 	AMKSTR(d_tx_delim_underrun),
1143 	"d_rx_crc_err",
1144 	"d_rx_decrypt_crc_err",
1145 	"d_rx_phy_err",
1146 	"d_rx_mic_err",
1147 	"d_rx_pre_delim_crc_err",
1148 	"d_rx_post_delim_crc_err",
1149 	"d_rx_decrypt_busy_err",
1150 
1151 	"d_rx_phyerr_radar",
1152 	"d_rx_phyerr_ofdm_timing",
1153 	"d_rx_phyerr_cck_timing",
1154 
1155 };
1156 #define ATH9K_SSTATS_LEN ARRAY_SIZE(ath9k_gstrings_stats)
1157 
1158 void ath9k_get_et_strings(struct ieee80211_hw *hw,
1159 			  struct ieee80211_vif *vif,
1160 			  u32 sset, u8 *data)
1161 {
1162 	if (sset == ETH_SS_STATS)
1163 		memcpy(data, *ath9k_gstrings_stats,
1164 		       sizeof(ath9k_gstrings_stats));
1165 }
1166 
1167 int ath9k_get_et_sset_count(struct ieee80211_hw *hw,
1168 			    struct ieee80211_vif *vif, int sset)
1169 {
1170 	if (sset == ETH_SS_STATS)
1171 		return ATH9K_SSTATS_LEN;
1172 	return 0;
1173 }
1174 
1175 #define AWDATA(elem)							\
1176 	do {								\
1177 		data[i++] = sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_BE)].elem; \
1178 		data[i++] = sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_BK)].elem; \
1179 		data[i++] = sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_VI)].elem; \
1180 		data[i++] = sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_VO)].elem; \
1181 	} while (0)
1182 
1183 #define AWDATA_RX(elem)						\
1184 	do {							\
1185 		data[i++] = sc->debug.stats.rxstats.elem;	\
1186 	} while (0)
1187 
1188 void ath9k_get_et_stats(struct ieee80211_hw *hw,
1189 			struct ieee80211_vif *vif,
1190 			struct ethtool_stats *stats, u64 *data)
1191 {
1192 	struct ath_softc *sc = hw->priv;
1193 	int i = 0;
1194 
1195 	data[i++] = (sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_BE)].tx_pkts_all +
1196 		     sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_BK)].tx_pkts_all +
1197 		     sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_VI)].tx_pkts_all +
1198 		     sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_VO)].tx_pkts_all);
1199 	data[i++] = (sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_BE)].tx_bytes_all +
1200 		     sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_BK)].tx_bytes_all +
1201 		     sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_VI)].tx_bytes_all +
1202 		     sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_VO)].tx_bytes_all);
1203 	AWDATA_RX(rx_pkts_all);
1204 	AWDATA_RX(rx_bytes_all);
1205 
1206 	AWDATA(tx_pkts_all);
1207 	AWDATA(tx_bytes_all);
1208 	AWDATA(queued);
1209 	AWDATA(completed);
1210 	AWDATA(xretries);
1211 	AWDATA(a_aggr);
1212 	AWDATA(a_queued_hw);
1213 	AWDATA(a_queued_sw);
1214 	AWDATA(a_completed);
1215 	AWDATA(a_retries);
1216 	AWDATA(a_xretries);
1217 	AWDATA(fifo_underrun);
1218 	AWDATA(xtxop);
1219 	AWDATA(timer_exp);
1220 	AWDATA(desc_cfg_err);
1221 	AWDATA(data_underrun);
1222 	AWDATA(delim_underrun);
1223 
1224 	AWDATA_RX(crc_err);
1225 	AWDATA_RX(decrypt_crc_err);
1226 	AWDATA_RX(phy_err);
1227 	AWDATA_RX(mic_err);
1228 	AWDATA_RX(pre_delim_crc_err);
1229 	AWDATA_RX(post_delim_crc_err);
1230 	AWDATA_RX(decrypt_busy_err);
1231 
1232 	AWDATA_RX(phy_err_stats[ATH9K_PHYERR_RADAR]);
1233 	AWDATA_RX(phy_err_stats[ATH9K_PHYERR_OFDM_TIMING]);
1234 	AWDATA_RX(phy_err_stats[ATH9K_PHYERR_CCK_TIMING]);
1235 
1236 	WARN_ON(i != ATH9K_SSTATS_LEN);
1237 }
1238 
1239 void ath9k_deinit_debug(struct ath_softc *sc)
1240 {
1241 	ath9k_cmn_spectral_deinit_debug(&sc->spec_priv);
1242 }
1243 
1244 int ath9k_init_debug(struct ath_hw *ah)
1245 {
1246 	struct ath_common *common = ath9k_hw_common(ah);
1247 	struct ath_softc *sc = (struct ath_softc *) common->priv;
1248 
1249 	sc->debug.debugfs_phy = debugfs_create_dir("ath9k",
1250 						   sc->hw->wiphy->debugfsdir);
1251 	if (!sc->debug.debugfs_phy)
1252 		return -ENOMEM;
1253 
1254 #ifdef CONFIG_ATH_DEBUG
1255 	debugfs_create_file("debug", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
1256 			    sc, &fops_debug);
1257 #endif
1258 
1259 	ath9k_dfs_init_debug(sc);
1260 	ath9k_tx99_init_debug(sc);
1261 	ath9k_cmn_spectral_init_debug(&sc->spec_priv, sc->debug.debugfs_phy);
1262 
1263 	debugfs_create_file("dma", S_IRUSR, sc->debug.debugfs_phy, sc,
1264 			    &fops_dma);
1265 	debugfs_create_file("interrupt", S_IRUSR, sc->debug.debugfs_phy, sc,
1266 			    &fops_interrupt);
1267 	debugfs_create_file("xmit", S_IRUSR, sc->debug.debugfs_phy, sc,
1268 			    &fops_xmit);
1269 	debugfs_create_file("queues", S_IRUSR, sc->debug.debugfs_phy, sc,
1270 			    &fops_queues);
1271 	debugfs_create_u32("qlen_bk", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
1272 			   &sc->tx.txq_max_pending[IEEE80211_AC_BK]);
1273 	debugfs_create_u32("qlen_be", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
1274 			   &sc->tx.txq_max_pending[IEEE80211_AC_BE]);
1275 	debugfs_create_u32("qlen_vi", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
1276 			   &sc->tx.txq_max_pending[IEEE80211_AC_VI]);
1277 	debugfs_create_u32("qlen_vo", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
1278 			   &sc->tx.txq_max_pending[IEEE80211_AC_VO]);
1279 	debugfs_create_file("misc", S_IRUSR, sc->debug.debugfs_phy, sc,
1280 			    &fops_misc);
1281 	debugfs_create_file("reset", S_IRUSR, sc->debug.debugfs_phy, sc,
1282 			    &fops_reset);
1283 
1284 	ath9k_cmn_debug_recv(sc->debug.debugfs_phy, &sc->debug.stats.rxstats);
1285 	ath9k_cmn_debug_phy_err(sc->debug.debugfs_phy, &sc->debug.stats.rxstats);
1286 
1287 	debugfs_create_u8("rx_chainmask", S_IRUSR, sc->debug.debugfs_phy,
1288 			  &ah->rxchainmask);
1289 	debugfs_create_u8("tx_chainmask", S_IRUSR, sc->debug.debugfs_phy,
1290 			  &ah->txchainmask);
1291 	debugfs_create_file("ani", S_IRUSR | S_IWUSR,
1292 			    sc->debug.debugfs_phy, sc, &fops_ani);
1293 	debugfs_create_bool("paprd", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
1294 			    &sc->sc_ah->config.enable_paprd);
1295 	debugfs_create_file("regidx", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
1296 			    sc, &fops_regidx);
1297 	debugfs_create_file("regval", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
1298 			    sc, &fops_regval);
1299 	debugfs_create_bool("ignore_extcca", S_IRUSR | S_IWUSR,
1300 			    sc->debug.debugfs_phy,
1301 			    &ah->config.cwm_ignore_extcca);
1302 	debugfs_create_file("regdump", S_IRUSR, sc->debug.debugfs_phy, sc,
1303 			    &fops_regdump);
1304 	debugfs_create_file("dump_nfcal", S_IRUSR, sc->debug.debugfs_phy, sc,
1305 			    &fops_dump_nfcal);
1306 
1307 	ath9k_cmn_debug_base_eeprom(sc->debug.debugfs_phy, sc->sc_ah);
1308 	ath9k_cmn_debug_modal_eeprom(sc->debug.debugfs_phy, sc->sc_ah);
1309 
1310 	debugfs_create_u32("gpio_mask", S_IRUSR | S_IWUSR,
1311 			   sc->debug.debugfs_phy, &sc->sc_ah->gpio_mask);
1312 	debugfs_create_u32("gpio_val", S_IRUSR | S_IWUSR,
1313 			   sc->debug.debugfs_phy, &sc->sc_ah->gpio_val);
1314 	debugfs_create_file("antenna_diversity", S_IRUSR,
1315 			    sc->debug.debugfs_phy, sc, &fops_antenna_diversity);
1316 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
1317 	debugfs_create_file("bt_ant_diversity", S_IRUSR | S_IWUSR,
1318 			    sc->debug.debugfs_phy, sc, &fops_bt_ant_diversity);
1319 	debugfs_create_file("btcoex", S_IRUSR, sc->debug.debugfs_phy, sc,
1320 			    &fops_btcoex);
1321 #endif
1322 
1323 #ifdef CONFIG_ATH9K_DYNACK
1324 	debugfs_create_file("ack_to", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
1325 			    sc, &fops_ackto);
1326 #endif
1327 
1328 	return 0;
1329 }
1330