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 ssize_t read_file_dma(struct file *file, char __user *user_buf,
405 			     size_t count, loff_t *ppos)
406 {
407 	struct ath_softc *sc = file->private_data;
408 	struct ath_hw *ah = sc->sc_ah;
409 	char *buf;
410 	int retval;
411 	unsigned int len = 0;
412 	u32 val[ATH9K_NUM_DMA_DEBUG_REGS];
413 	int i, qcuOffset = 0, dcuOffset = 0;
414 	u32 *qcuBase = &val[0], *dcuBase = &val[4];
415 
416 	buf = kmalloc(DMA_BUF_LEN, GFP_KERNEL);
417 	if (!buf)
418 		return -ENOMEM;
419 
420 	ath9k_ps_wakeup(sc);
421 
422 	REG_WRITE_D(ah, AR_MACMISC,
423 		  ((AR_MACMISC_DMA_OBS_LINE_8 << AR_MACMISC_DMA_OBS_S) |
424 		   (AR_MACMISC_MISC_OBS_BUS_1 <<
425 		    AR_MACMISC_MISC_OBS_BUS_MSB_S)));
426 
427 	len += scnprintf(buf + len, DMA_BUF_LEN - len,
428 			 "Raw DMA Debug values:\n");
429 
430 	for (i = 0; i < ATH9K_NUM_DMA_DEBUG_REGS; i++) {
431 		if (i % 4 == 0)
432 			len += scnprintf(buf + len, DMA_BUF_LEN - len, "\n");
433 
434 		val[i] = REG_READ_D(ah, AR_DMADBG_0 + (i * sizeof(u32)));
435 		len += scnprintf(buf + len, DMA_BUF_LEN - len, "%d: %08x ",
436 				 i, val[i]);
437 	}
438 
439 	len += scnprintf(buf + len, DMA_BUF_LEN - len, "\n\n");
440 	len += scnprintf(buf + len, DMA_BUF_LEN - len,
441 			 "Num QCU: chain_st fsp_ok fsp_st DCU: chain_st\n");
442 
443 	for (i = 0; i < ATH9K_NUM_QUEUES; i++, qcuOffset += 4, dcuOffset += 5) {
444 		if (i == 8) {
445 			qcuOffset = 0;
446 			qcuBase++;
447 		}
448 
449 		if (i == 6) {
450 			dcuOffset = 0;
451 			dcuBase++;
452 		}
453 
454 		len += scnprintf(buf + len, DMA_BUF_LEN - len,
455 			 "%2d          %2x      %1x     %2x           %2x\n",
456 			 i, (*qcuBase & (0x7 << qcuOffset)) >> qcuOffset,
457 			 (*qcuBase & (0x8 << qcuOffset)) >> (qcuOffset + 3),
458 			 (val[2] & (0x7 << (i * 3))) >> (i * 3),
459 			 (*dcuBase & (0x1f << dcuOffset)) >> dcuOffset);
460 	}
461 
462 	len += scnprintf(buf + len, DMA_BUF_LEN - len, "\n");
463 
464 	len += scnprintf(buf + len, DMA_BUF_LEN - len,
465 		"qcu_stitch state:   %2x    qcu_fetch state:        %2x\n",
466 		(val[3] & 0x003c0000) >> 18, (val[3] & 0x03c00000) >> 22);
467 	len += scnprintf(buf + len, DMA_BUF_LEN - len,
468 		"qcu_complete state: %2x    dcu_complete state:     %2x\n",
469 		(val[3] & 0x1c000000) >> 26, (val[6] & 0x3));
470 	len += scnprintf(buf + len, DMA_BUF_LEN - len,
471 		"dcu_arb state:      %2x    dcu_fp state:           %2x\n",
472 		(val[5] & 0x06000000) >> 25, (val[5] & 0x38000000) >> 27);
473 	len += scnprintf(buf + len, DMA_BUF_LEN - len,
474 		"chan_idle_dur:     %3d    chan_idle_dur_valid:     %1d\n",
475 		(val[6] & 0x000003fc) >> 2, (val[6] & 0x00000400) >> 10);
476 	len += scnprintf(buf + len, DMA_BUF_LEN - len,
477 		"txfifo_valid_0:      %1d    txfifo_valid_1:          %1d\n",
478 		(val[6] & 0x00000800) >> 11, (val[6] & 0x00001000) >> 12);
479 	len += scnprintf(buf + len, DMA_BUF_LEN - len,
480 		"txfifo_dcu_num_0:   %2d    txfifo_dcu_num_1:       %2d\n",
481 		(val[6] & 0x0001e000) >> 13, (val[6] & 0x001e0000) >> 17);
482 
483 	len += scnprintf(buf + len, DMA_BUF_LEN - len, "pcu observe: 0x%x\n",
484 			 REG_READ_D(ah, AR_OBS_BUS_1));
485 	len += scnprintf(buf + len, DMA_BUF_LEN - len,
486 			 "AR_CR: 0x%x\n", REG_READ_D(ah, AR_CR));
487 
488 	ath9k_ps_restore(sc);
489 
490 	if (len > DMA_BUF_LEN)
491 		len = DMA_BUF_LEN;
492 
493 	retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
494 	kfree(buf);
495 	return retval;
496 }
497 
498 static const struct file_operations fops_dma = {
499 	.read = read_file_dma,
500 	.open = simple_open,
501 	.owner = THIS_MODULE,
502 	.llseek = default_llseek,
503 };
504 
505 
506 void ath_debug_stat_interrupt(struct ath_softc *sc, enum ath9k_int status)
507 {
508 	if (status)
509 		sc->debug.stats.istats.total++;
510 	if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
511 		if (status & ATH9K_INT_RXLP)
512 			sc->debug.stats.istats.rxlp++;
513 		if (status & ATH9K_INT_RXHP)
514 			sc->debug.stats.istats.rxhp++;
515 		if (status & ATH9K_INT_BB_WATCHDOG)
516 			sc->debug.stats.istats.bb_watchdog++;
517 	} else {
518 		if (status & ATH9K_INT_RX)
519 			sc->debug.stats.istats.rxok++;
520 	}
521 	if (status & ATH9K_INT_RXEOL)
522 		sc->debug.stats.istats.rxeol++;
523 	if (status & ATH9K_INT_RXORN)
524 		sc->debug.stats.istats.rxorn++;
525 	if (status & ATH9K_INT_TX)
526 		sc->debug.stats.istats.txok++;
527 	if (status & ATH9K_INT_TXURN)
528 		sc->debug.stats.istats.txurn++;
529 	if (status & ATH9K_INT_RXPHY)
530 		sc->debug.stats.istats.rxphyerr++;
531 	if (status & ATH9K_INT_RXKCM)
532 		sc->debug.stats.istats.rx_keycache_miss++;
533 	if (status & ATH9K_INT_SWBA)
534 		sc->debug.stats.istats.swba++;
535 	if (status & ATH9K_INT_BMISS)
536 		sc->debug.stats.istats.bmiss++;
537 	if (status & ATH9K_INT_BNR)
538 		sc->debug.stats.istats.bnr++;
539 	if (status & ATH9K_INT_CST)
540 		sc->debug.stats.istats.cst++;
541 	if (status & ATH9K_INT_GTT)
542 		sc->debug.stats.istats.gtt++;
543 	if (status & ATH9K_INT_TIM)
544 		sc->debug.stats.istats.tim++;
545 	if (status & ATH9K_INT_CABEND)
546 		sc->debug.stats.istats.cabend++;
547 	if (status & ATH9K_INT_DTIMSYNC)
548 		sc->debug.stats.istats.dtimsync++;
549 	if (status & ATH9K_INT_DTIM)
550 		sc->debug.stats.istats.dtim++;
551 	if (status & ATH9K_INT_TSFOOR)
552 		sc->debug.stats.istats.tsfoor++;
553 	if (status & ATH9K_INT_MCI)
554 		sc->debug.stats.istats.mci++;
555 	if (status & ATH9K_INT_GENTIMER)
556 		sc->debug.stats.istats.gen_timer++;
557 }
558 
559 static ssize_t read_file_interrupt(struct file *file, char __user *user_buf,
560 				   size_t count, loff_t *ppos)
561 {
562 	struct ath_softc *sc = file->private_data;
563 	unsigned int len = 0;
564 	int rv;
565 	int mxlen = 4000;
566 	char *buf = kmalloc(mxlen, GFP_KERNEL);
567 	if (!buf)
568 		return -ENOMEM;
569 
570 #define PR_IS(a, s)						\
571 	do {							\
572 		len += scnprintf(buf + len, mxlen - len,	\
573 				 "%21s: %10u\n", a,		\
574 				 sc->debug.stats.istats.s);	\
575 	} while (0)
576 
577 	if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
578 		PR_IS("RXLP", rxlp);
579 		PR_IS("RXHP", rxhp);
580 		PR_IS("WATHDOG", bb_watchdog);
581 	} else {
582 		PR_IS("RX", rxok);
583 	}
584 	PR_IS("RXEOL", rxeol);
585 	PR_IS("RXORN", rxorn);
586 	PR_IS("TX", txok);
587 	PR_IS("TXURN", txurn);
588 	PR_IS("MIB", mib);
589 	PR_IS("RXPHY", rxphyerr);
590 	PR_IS("RXKCM", rx_keycache_miss);
591 	PR_IS("SWBA", swba);
592 	PR_IS("BMISS", bmiss);
593 	PR_IS("BNR", bnr);
594 	PR_IS("CST", cst);
595 	PR_IS("GTT", gtt);
596 	PR_IS("TIM", tim);
597 	PR_IS("CABEND", cabend);
598 	PR_IS("DTIMSYNC", dtimsync);
599 	PR_IS("DTIM", dtim);
600 	PR_IS("TSFOOR", tsfoor);
601 	PR_IS("MCI", mci);
602 	PR_IS("GENTIMER", gen_timer);
603 	PR_IS("TOTAL", total);
604 
605 	len += scnprintf(buf + len, mxlen - len,
606 			 "SYNC_CAUSE stats:\n");
607 
608 	PR_IS("Sync-All", sync_cause_all);
609 	PR_IS("RTC-IRQ", sync_rtc_irq);
610 	PR_IS("MAC-IRQ", sync_mac_irq);
611 	PR_IS("EEPROM-Illegal-Access", eeprom_illegal_access);
612 	PR_IS("APB-Timeout", apb_timeout);
613 	PR_IS("PCI-Mode-Conflict", pci_mode_conflict);
614 	PR_IS("HOST1-Fatal", host1_fatal);
615 	PR_IS("HOST1-Perr", host1_perr);
616 	PR_IS("TRCV-FIFO-Perr", trcv_fifo_perr);
617 	PR_IS("RADM-CPL-EP", radm_cpl_ep);
618 	PR_IS("RADM-CPL-DLLP-Abort", radm_cpl_dllp_abort);
619 	PR_IS("RADM-CPL-TLP-Abort", radm_cpl_tlp_abort);
620 	PR_IS("RADM-CPL-ECRC-Err", radm_cpl_ecrc_err);
621 	PR_IS("RADM-CPL-Timeout", radm_cpl_timeout);
622 	PR_IS("Local-Bus-Timeout", local_timeout);
623 	PR_IS("PM-Access", pm_access);
624 	PR_IS("MAC-Awake", mac_awake);
625 	PR_IS("MAC-Asleep", mac_asleep);
626 	PR_IS("MAC-Sleep-Access", mac_sleep_access);
627 
628 	if (len > mxlen)
629 		len = mxlen;
630 
631 	rv = simple_read_from_buffer(user_buf, count, ppos, buf, len);
632 	kfree(buf);
633 	return rv;
634 }
635 
636 static const struct file_operations fops_interrupt = {
637 	.read = read_file_interrupt,
638 	.open = simple_open,
639 	.owner = THIS_MODULE,
640 	.llseek = default_llseek,
641 };
642 
643 static ssize_t read_file_xmit(struct file *file, char __user *user_buf,
644 			      size_t count, loff_t *ppos)
645 {
646 	struct ath_softc *sc = file->private_data;
647 	char *buf;
648 	unsigned int len = 0, size = 2048;
649 	ssize_t retval = 0;
650 
651 	buf = kzalloc(size, GFP_KERNEL);
652 	if (buf == NULL)
653 		return -ENOMEM;
654 
655 	len += sprintf(buf, "%30s %10s%10s%10s\n\n",
656 		       "BE", "BK", "VI", "VO");
657 
658 	PR("MPDUs Queued:    ", queued);
659 	PR("MPDUs Completed: ", completed);
660 	PR("MPDUs XRetried:  ", xretries);
661 	PR("Aggregates:      ", a_aggr);
662 	PR("AMPDUs Queued HW:", a_queued_hw);
663 	PR("AMPDUs Queued SW:", a_queued_sw);
664 	PR("AMPDUs Completed:", a_completed);
665 	PR("AMPDUs Retried:  ", a_retries);
666 	PR("AMPDUs XRetried: ", a_xretries);
667 	PR("TXERR Filtered:  ", txerr_filtered);
668 	PR("FIFO Underrun:   ", fifo_underrun);
669 	PR("TXOP Exceeded:   ", xtxop);
670 	PR("TXTIMER Expiry:  ", timer_exp);
671 	PR("DESC CFG Error:  ", desc_cfg_err);
672 	PR("DATA Underrun:   ", data_underrun);
673 	PR("DELIM Underrun:  ", delim_underrun);
674 	PR("TX-Pkts-All:     ", tx_pkts_all);
675 	PR("TX-Bytes-All:    ", tx_bytes_all);
676 	PR("HW-put-tx-buf:   ", puttxbuf);
677 	PR("HW-tx-start:     ", txstart);
678 	PR("HW-tx-proc-desc: ", txprocdesc);
679 	PR("TX-Failed:       ", txfailed);
680 
681 	if (len > size)
682 		len = size;
683 
684 	retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
685 	kfree(buf);
686 
687 	return retval;
688 }
689 
690 static ssize_t print_queue(struct ath_softc *sc, struct ath_txq *txq,
691 			   char *buf, ssize_t size)
692 {
693 	ssize_t len = 0;
694 
695 	ath_txq_lock(sc, txq);
696 
697 	len += scnprintf(buf + len, size - len, "%s: %d ",
698 			 "qnum", txq->axq_qnum);
699 	len += scnprintf(buf + len, size - len, "%s: %2d ",
700 			 "qdepth", txq->axq_depth);
701 	len += scnprintf(buf + len, size - len, "%s: %2d ",
702 			 "ampdu-depth", txq->axq_ampdu_depth);
703 	len += scnprintf(buf + len, size - len, "%s: %3d ",
704 			 "pending", txq->pending_frames);
705 	len += scnprintf(buf + len, size - len, "%s: %d\n",
706 			 "stopped", txq->stopped);
707 
708 	ath_txq_unlock(sc, txq);
709 	return len;
710 }
711 
712 static ssize_t read_file_queues(struct file *file, char __user *user_buf,
713 				size_t count, loff_t *ppos)
714 {
715 	struct ath_softc *sc = file->private_data;
716 	struct ath_txq *txq;
717 	char *buf;
718 	unsigned int len = 0;
719 	const unsigned int size = 1024;
720 	ssize_t retval = 0;
721 	int i;
722 	static const char *qname[4] = {
723 		"VO", "VI", "BE", "BK"
724 	};
725 
726 	buf = kzalloc(size, GFP_KERNEL);
727 	if (buf == NULL)
728 		return -ENOMEM;
729 
730 	for (i = 0; i < IEEE80211_NUM_ACS; i++) {
731 		txq = sc->tx.txq_map[i];
732 		len += scnprintf(buf + len, size - len, "(%s):  ", qname[i]);
733 		len += print_queue(sc, txq, buf + len, size - len);
734 	}
735 
736 	len += scnprintf(buf + len, size - len, "(CAB): ");
737 	len += print_queue(sc, sc->beacon.cabq, buf + len, size - len);
738 
739 	if (len > size)
740 		len = size;
741 
742 	retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
743 	kfree(buf);
744 
745 	return retval;
746 }
747 
748 static ssize_t read_file_misc(struct file *file, char __user *user_buf,
749 			      size_t count, loff_t *ppos)
750 {
751 	struct ath_softc *sc = file->private_data;
752 	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
753 	struct ath9k_vif_iter_data iter_data;
754 	struct ath_chanctx *ctx;
755 	char buf[512];
756 	unsigned int len = 0;
757 	ssize_t retval = 0;
758 	unsigned int reg;
759 	u32 rxfilter, i;
760 
761 	len += scnprintf(buf + len, sizeof(buf) - len,
762 			 "BSSID: %pM\n", common->curbssid);
763 	len += scnprintf(buf + len, sizeof(buf) - len,
764 			 "BSSID-MASK: %pM\n", common->bssidmask);
765 	len += scnprintf(buf + len, sizeof(buf) - len,
766 			 "OPMODE: %s\n",
767 			 ath_opmode_to_string(sc->sc_ah->opmode));
768 
769 	ath9k_ps_wakeup(sc);
770 	rxfilter = ath9k_hw_getrxfilter(sc->sc_ah);
771 	ath9k_ps_restore(sc);
772 
773 	len += scnprintf(buf + len, sizeof(buf) - len,
774 			 "RXFILTER: 0x%x", rxfilter);
775 
776 	if (rxfilter & ATH9K_RX_FILTER_UCAST)
777 		len += scnprintf(buf + len, sizeof(buf) - len, " UCAST");
778 	if (rxfilter & ATH9K_RX_FILTER_MCAST)
779 		len += scnprintf(buf + len, sizeof(buf) - len, " MCAST");
780 	if (rxfilter & ATH9K_RX_FILTER_BCAST)
781 		len += scnprintf(buf + len, sizeof(buf) - len, " BCAST");
782 	if (rxfilter & ATH9K_RX_FILTER_CONTROL)
783 		len += scnprintf(buf + len, sizeof(buf) - len, " CONTROL");
784 	if (rxfilter & ATH9K_RX_FILTER_BEACON)
785 		len += scnprintf(buf + len, sizeof(buf) - len, " BEACON");
786 	if (rxfilter & ATH9K_RX_FILTER_PROM)
787 		len += scnprintf(buf + len, sizeof(buf) - len, " PROM");
788 	if (rxfilter & ATH9K_RX_FILTER_PROBEREQ)
789 		len += scnprintf(buf + len, sizeof(buf) - len, " PROBEREQ");
790 	if (rxfilter & ATH9K_RX_FILTER_PHYERR)
791 		len += scnprintf(buf + len, sizeof(buf) - len, " PHYERR");
792 	if (rxfilter & ATH9K_RX_FILTER_MYBEACON)
793 		len += scnprintf(buf + len, sizeof(buf) - len, " MYBEACON");
794 	if (rxfilter & ATH9K_RX_FILTER_COMP_BAR)
795 		len += scnprintf(buf + len, sizeof(buf) - len, " COMP_BAR");
796 	if (rxfilter & ATH9K_RX_FILTER_PSPOLL)
797 		len += scnprintf(buf + len, sizeof(buf) - len, " PSPOLL");
798 	if (rxfilter & ATH9K_RX_FILTER_PHYRADAR)
799 		len += scnprintf(buf + len, sizeof(buf) - len, " PHYRADAR");
800 	if (rxfilter & ATH9K_RX_FILTER_MCAST_BCAST_ALL)
801 		len += scnprintf(buf + len, sizeof(buf) - len, " MCAST_BCAST_ALL");
802 	if (rxfilter & ATH9K_RX_FILTER_CONTROL_WRAPPER)
803 		len += scnprintf(buf + len, sizeof(buf) - len, " CONTROL_WRAPPER");
804 
805 	len += scnprintf(buf + len, sizeof(buf) - len, "\n");
806 
807 	reg = sc->sc_ah->imask;
808 
809 	len += scnprintf(buf + len, sizeof(buf) - len,
810 			 "INTERRUPT-MASK: 0x%x", reg);
811 
812 	if (reg & ATH9K_INT_SWBA)
813 		len += scnprintf(buf + len, sizeof(buf) - len, " SWBA");
814 	if (reg & ATH9K_INT_BMISS)
815 		len += scnprintf(buf + len, sizeof(buf) - len, " BMISS");
816 	if (reg & ATH9K_INT_CST)
817 		len += scnprintf(buf + len, sizeof(buf) - len, " CST");
818 	if (reg & ATH9K_INT_RX)
819 		len += scnprintf(buf + len, sizeof(buf) - len, " RX");
820 	if (reg & ATH9K_INT_RXHP)
821 		len += scnprintf(buf + len, sizeof(buf) - len, " RXHP");
822 	if (reg & ATH9K_INT_RXLP)
823 		len += scnprintf(buf + len, sizeof(buf) - len, " RXLP");
824 	if (reg & ATH9K_INT_BB_WATCHDOG)
825 		len += scnprintf(buf + len, sizeof(buf) - len, " BB_WATCHDOG");
826 
827 	len += scnprintf(buf + len, sizeof(buf) - len, "\n");
828 
829 	i = 0;
830 	ath_for_each_chanctx(sc, ctx) {
831 		if (!ctx->assigned || list_empty(&ctx->vifs))
832 			continue;
833 		ath9k_calculate_iter_data(sc, ctx, &iter_data);
834 
835 		len += scnprintf(buf + len, sizeof(buf) - len,
836 			"VIF-COUNTS: CTX %i AP: %i STA: %i MESH: %i WDS: %i",
837 			i++, iter_data.naps, iter_data.nstations,
838 			iter_data.nmeshes, iter_data.nwds);
839 		len += scnprintf(buf + len, sizeof(buf) - len,
840 			" ADHOC: %i TOTAL: %hi BEACON-VIF: %hi\n",
841 			iter_data.nadhocs, sc->cur_chan->nvifs, sc->nbcnvifs);
842 	}
843 
844 	if (len > sizeof(buf))
845 		len = sizeof(buf);
846 
847 	retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
848 	return retval;
849 }
850 
851 static ssize_t read_file_reset(struct file *file, char __user *user_buf,
852 			       size_t count, loff_t *ppos)
853 {
854 	struct ath_softc *sc = file->private_data;
855 	char buf[512];
856 	unsigned int len = 0;
857 
858 	len += scnprintf(buf + len, sizeof(buf) - len,
859 			 "%17s: %2d\n", "Baseband Hang",
860 			 sc->debug.stats.reset[RESET_TYPE_BB_HANG]);
861 	len += scnprintf(buf + len, sizeof(buf) - len,
862 			 "%17s: %2d\n", "Baseband Watchdog",
863 			 sc->debug.stats.reset[RESET_TYPE_BB_WATCHDOG]);
864 	len += scnprintf(buf + len, sizeof(buf) - len,
865 			 "%17s: %2d\n", "Fatal HW Error",
866 			 sc->debug.stats.reset[RESET_TYPE_FATAL_INT]);
867 	len += scnprintf(buf + len, sizeof(buf) - len,
868 			 "%17s: %2d\n", "TX HW error",
869 			 sc->debug.stats.reset[RESET_TYPE_TX_ERROR]);
870 	len += scnprintf(buf + len, sizeof(buf) - len,
871 			 "%17s: %2d\n", "TX Path Hang",
872 			 sc->debug.stats.reset[RESET_TYPE_TX_HANG]);
873 	len += scnprintf(buf + len, sizeof(buf) - len,
874 			 "%17s: %2d\n", "PLL RX Hang",
875 			 sc->debug.stats.reset[RESET_TYPE_PLL_HANG]);
876 	len += scnprintf(buf + len, sizeof(buf) - len,
877 			 "%17s: %2d\n", "MAC Hang",
878 			 sc->debug.stats.reset[RESET_TYPE_MAC_HANG]);
879 	len += scnprintf(buf + len, sizeof(buf) - len,
880 			 "%17s: %2d\n", "Stuck Beacon",
881 			 sc->debug.stats.reset[RESET_TYPE_BEACON_STUCK]);
882 	len += scnprintf(buf + len, sizeof(buf) - len,
883 			 "%17s: %2d\n", "MCI Reset",
884 			 sc->debug.stats.reset[RESET_TYPE_MCI]);
885 
886 	if (len > sizeof(buf))
887 		len = sizeof(buf);
888 
889 	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
890 }
891 
892 void ath_debug_stat_tx(struct ath_softc *sc, struct ath_buf *bf,
893 		       struct ath_tx_status *ts, struct ath_txq *txq,
894 		       unsigned int flags)
895 {
896 	int qnum = txq->axq_qnum;
897 
898 	TX_STAT_INC(qnum, tx_pkts_all);
899 	sc->debug.stats.txstats[qnum].tx_bytes_all += bf->bf_mpdu->len;
900 
901 	if (bf_isampdu(bf)) {
902 		if (flags & ATH_TX_ERROR)
903 			TX_STAT_INC(qnum, a_xretries);
904 		else
905 			TX_STAT_INC(qnum, a_completed);
906 	} else {
907 		if (ts->ts_status & ATH9K_TXERR_XRETRY)
908 			TX_STAT_INC(qnum, xretries);
909 		else
910 			TX_STAT_INC(qnum, completed);
911 	}
912 
913 	if (ts->ts_status & ATH9K_TXERR_FILT)
914 		TX_STAT_INC(qnum, txerr_filtered);
915 	if (ts->ts_status & ATH9K_TXERR_FIFO)
916 		TX_STAT_INC(qnum, fifo_underrun);
917 	if (ts->ts_status & ATH9K_TXERR_XTXOP)
918 		TX_STAT_INC(qnum, xtxop);
919 	if (ts->ts_status & ATH9K_TXERR_TIMER_EXPIRED)
920 		TX_STAT_INC(qnum, timer_exp);
921 	if (ts->ts_flags & ATH9K_TX_DESC_CFG_ERR)
922 		TX_STAT_INC(qnum, desc_cfg_err);
923 	if (ts->ts_flags & ATH9K_TX_DATA_UNDERRUN)
924 		TX_STAT_INC(qnum, data_underrun);
925 	if (ts->ts_flags & ATH9K_TX_DELIM_UNDERRUN)
926 		TX_STAT_INC(qnum, delim_underrun);
927 }
928 
929 static const struct file_operations fops_xmit = {
930 	.read = read_file_xmit,
931 	.open = simple_open,
932 	.owner = THIS_MODULE,
933 	.llseek = default_llseek,
934 };
935 
936 static const struct file_operations fops_queues = {
937 	.read = read_file_queues,
938 	.open = simple_open,
939 	.owner = THIS_MODULE,
940 	.llseek = default_llseek,
941 };
942 
943 static const struct file_operations fops_misc = {
944 	.read = read_file_misc,
945 	.open = simple_open,
946 	.owner = THIS_MODULE,
947 	.llseek = default_llseek,
948 };
949 
950 static const struct file_operations fops_reset = {
951 	.read = read_file_reset,
952 	.open = simple_open,
953 	.owner = THIS_MODULE,
954 	.llseek = default_llseek,
955 };
956 
957 void ath_debug_stat_rx(struct ath_softc *sc, struct ath_rx_status *rs)
958 {
959 	ath9k_cmn_debug_stat_rx(&sc->debug.stats.rxstats, rs);
960 }
961 
962 static ssize_t read_file_regidx(struct file *file, char __user *user_buf,
963                                 size_t count, loff_t *ppos)
964 {
965 	struct ath_softc *sc = file->private_data;
966 	char buf[32];
967 	unsigned int len;
968 
969 	len = sprintf(buf, "0x%08x\n", sc->debug.regidx);
970 	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
971 }
972 
973 static ssize_t write_file_regidx(struct file *file, const char __user *user_buf,
974 			     size_t count, loff_t *ppos)
975 {
976 	struct ath_softc *sc = file->private_data;
977 	unsigned long regidx;
978 	char buf[32];
979 	ssize_t len;
980 
981 	len = min(count, sizeof(buf) - 1);
982 	if (copy_from_user(buf, user_buf, len))
983 		return -EFAULT;
984 
985 	buf[len] = '\0';
986 	if (kstrtoul(buf, 0, &regidx))
987 		return -EINVAL;
988 
989 	sc->debug.regidx = regidx;
990 	return count;
991 }
992 
993 static const struct file_operations fops_regidx = {
994 	.read = read_file_regidx,
995 	.write = write_file_regidx,
996 	.open = simple_open,
997 	.owner = THIS_MODULE,
998 	.llseek = default_llseek,
999 };
1000 
1001 static ssize_t read_file_regval(struct file *file, char __user *user_buf,
1002 			     size_t count, loff_t *ppos)
1003 {
1004 	struct ath_softc *sc = file->private_data;
1005 	struct ath_hw *ah = sc->sc_ah;
1006 	char buf[32];
1007 	unsigned int len;
1008 	u32 regval;
1009 
1010 	ath9k_ps_wakeup(sc);
1011 	regval = REG_READ_D(ah, sc->debug.regidx);
1012 	ath9k_ps_restore(sc);
1013 	len = sprintf(buf, "0x%08x\n", regval);
1014 	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
1015 }
1016 
1017 static ssize_t write_file_regval(struct file *file, const char __user *user_buf,
1018 			     size_t count, loff_t *ppos)
1019 {
1020 	struct ath_softc *sc = file->private_data;
1021 	struct ath_hw *ah = sc->sc_ah;
1022 	unsigned long regval;
1023 	char buf[32];
1024 	ssize_t len;
1025 
1026 	len = min(count, sizeof(buf) - 1);
1027 	if (copy_from_user(buf, user_buf, len))
1028 		return -EFAULT;
1029 
1030 	buf[len] = '\0';
1031 	if (kstrtoul(buf, 0, &regval))
1032 		return -EINVAL;
1033 
1034 	ath9k_ps_wakeup(sc);
1035 	REG_WRITE_D(ah, sc->debug.regidx, regval);
1036 	ath9k_ps_restore(sc);
1037 	return count;
1038 }
1039 
1040 static const struct file_operations fops_regval = {
1041 	.read = read_file_regval,
1042 	.write = write_file_regval,
1043 	.open = simple_open,
1044 	.owner = THIS_MODULE,
1045 	.llseek = default_llseek,
1046 };
1047 
1048 #define REGDUMP_LINE_SIZE	20
1049 
1050 static int open_file_regdump(struct inode *inode, struct file *file)
1051 {
1052 	struct ath_softc *sc = inode->i_private;
1053 	unsigned int len = 0;
1054 	u8 *buf;
1055 	int i;
1056 	unsigned long num_regs, regdump_len, max_reg_offset;
1057 
1058 	max_reg_offset = AR_SREV_9300_20_OR_LATER(sc->sc_ah) ? 0x16bd4 : 0xb500;
1059 	num_regs = max_reg_offset / 4 + 1;
1060 	regdump_len = num_regs * REGDUMP_LINE_SIZE + 1;
1061 	buf = vmalloc(regdump_len);
1062 	if (!buf)
1063 		return -ENOMEM;
1064 
1065 	ath9k_ps_wakeup(sc);
1066 	for (i = 0; i < num_regs; i++)
1067 		len += scnprintf(buf + len, regdump_len - len,
1068 			"0x%06x 0x%08x\n", i << 2, REG_READ(sc->sc_ah, i << 2));
1069 	ath9k_ps_restore(sc);
1070 
1071 	file->private_data = buf;
1072 
1073 	return 0;
1074 }
1075 
1076 static const struct file_operations fops_regdump = {
1077 	.open = open_file_regdump,
1078 	.read = ath9k_debugfs_read_buf,
1079 	.release = ath9k_debugfs_release_buf,
1080 	.owner = THIS_MODULE,
1081 	.llseek = default_llseek,/* read accesses f_pos */
1082 };
1083 
1084 static ssize_t read_file_dump_nfcal(struct file *file, char __user *user_buf,
1085 				    size_t count, loff_t *ppos)
1086 {
1087 	struct ath_softc *sc = file->private_data;
1088 	struct ath_hw *ah = sc->sc_ah;
1089 	struct ath9k_nfcal_hist *h = sc->cur_chan->caldata.nfCalHist;
1090 	struct ath_common *common = ath9k_hw_common(ah);
1091 	struct ieee80211_conf *conf = &common->hw->conf;
1092 	u32 len = 0, size = 1500;
1093 	u32 i, j;
1094 	ssize_t retval = 0;
1095 	char *buf;
1096 	u8 chainmask = (ah->rxchainmask << 3) | ah->rxchainmask;
1097 	u8 nread;
1098 
1099 	buf = kzalloc(size, GFP_KERNEL);
1100 	if (!buf)
1101 		return -ENOMEM;
1102 
1103 	len += scnprintf(buf + len, size - len,
1104 			 "Channel Noise Floor : %d\n", ah->noise);
1105 	len += scnprintf(buf + len, size - len,
1106 			 "Chain | privNF | # Readings | NF Readings\n");
1107 	for (i = 0; i < NUM_NF_READINGS; i++) {
1108 		if (!(chainmask & (1 << i)) ||
1109 		    ((i >= AR5416_MAX_CHAINS) && !conf_is_ht40(conf)))
1110 			continue;
1111 
1112 		nread = AR_PHY_CCA_FILTERWINDOW_LENGTH - h[i].invalidNFcount;
1113 		len += scnprintf(buf + len, size - len, " %d\t %d\t %d\t\t",
1114 				 i, h[i].privNF, nread);
1115 		for (j = 0; j < nread; j++)
1116 			len += scnprintf(buf + len, size - len,
1117 					 " %d", h[i].nfCalBuffer[j]);
1118 		len += scnprintf(buf + len, size - len, "\n");
1119 	}
1120 
1121 	if (len > size)
1122 		len = size;
1123 
1124 	retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
1125 	kfree(buf);
1126 
1127 	return retval;
1128 }
1129 
1130 static const struct file_operations fops_dump_nfcal = {
1131 	.read = read_file_dump_nfcal,
1132 	.open = simple_open,
1133 	.owner = THIS_MODULE,
1134 	.llseek = default_llseek,
1135 };
1136 
1137 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
1138 static ssize_t read_file_btcoex(struct file *file, char __user *user_buf,
1139 				size_t count, loff_t *ppos)
1140 {
1141 	struct ath_softc *sc = file->private_data;
1142 	u32 len = 0, size = 1500;
1143 	char *buf;
1144 	size_t retval;
1145 
1146 	buf = kzalloc(size, GFP_KERNEL);
1147 	if (buf == NULL)
1148 		return -ENOMEM;
1149 
1150 	if (!sc->sc_ah->common.btcoex_enabled) {
1151 		len = scnprintf(buf, size, "%s\n",
1152 				"BTCOEX is disabled");
1153 		goto exit;
1154 	}
1155 
1156 	len = ath9k_dump_btcoex(sc, buf, size);
1157 exit:
1158 	retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
1159 	kfree(buf);
1160 
1161 	return retval;
1162 }
1163 
1164 static const struct file_operations fops_btcoex = {
1165 	.read = read_file_btcoex,
1166 	.open = simple_open,
1167 	.owner = THIS_MODULE,
1168 	.llseek = default_llseek,
1169 };
1170 #endif
1171 
1172 #ifdef CONFIG_ATH9K_DYNACK
1173 static ssize_t read_file_ackto(struct file *file, char __user *user_buf,
1174 			       size_t count, loff_t *ppos)
1175 {
1176 	struct ath_softc *sc = file->private_data;
1177 	struct ath_hw *ah = sc->sc_ah;
1178 	char buf[32];
1179 	unsigned int len;
1180 
1181 	len = sprintf(buf, "%u %c\n", ah->dynack.ackto,
1182 		      (ah->dynack.enabled) ? 'A' : 'S');
1183 
1184 	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
1185 }
1186 
1187 static const struct file_operations fops_ackto = {
1188 	.read = read_file_ackto,
1189 	.open = simple_open,
1190 	.owner = THIS_MODULE,
1191 	.llseek = default_llseek,
1192 };
1193 #endif
1194 
1195 /* Ethtool support for get-stats */
1196 
1197 #define AMKSTR(nm) #nm "_BE", #nm "_BK", #nm "_VI", #nm "_VO"
1198 static const char ath9k_gstrings_stats[][ETH_GSTRING_LEN] = {
1199 	"tx_pkts_nic",
1200 	"tx_bytes_nic",
1201 	"rx_pkts_nic",
1202 	"rx_bytes_nic",
1203 	AMKSTR(d_tx_pkts),
1204 	AMKSTR(d_tx_bytes),
1205 	AMKSTR(d_tx_mpdus_queued),
1206 	AMKSTR(d_tx_mpdus_completed),
1207 	AMKSTR(d_tx_mpdu_xretries),
1208 	AMKSTR(d_tx_aggregates),
1209 	AMKSTR(d_tx_ampdus_queued_hw),
1210 	AMKSTR(d_tx_ampdus_queued_sw),
1211 	AMKSTR(d_tx_ampdus_completed),
1212 	AMKSTR(d_tx_ampdu_retries),
1213 	AMKSTR(d_tx_ampdu_xretries),
1214 	AMKSTR(d_tx_fifo_underrun),
1215 	AMKSTR(d_tx_op_exceeded),
1216 	AMKSTR(d_tx_timer_expiry),
1217 	AMKSTR(d_tx_desc_cfg_err),
1218 	AMKSTR(d_tx_data_underrun),
1219 	AMKSTR(d_tx_delim_underrun),
1220 	"d_rx_crc_err",
1221 	"d_rx_decrypt_crc_err",
1222 	"d_rx_phy_err",
1223 	"d_rx_mic_err",
1224 	"d_rx_pre_delim_crc_err",
1225 	"d_rx_post_delim_crc_err",
1226 	"d_rx_decrypt_busy_err",
1227 
1228 	"d_rx_phyerr_radar",
1229 	"d_rx_phyerr_ofdm_timing",
1230 	"d_rx_phyerr_cck_timing",
1231 
1232 };
1233 #define ATH9K_SSTATS_LEN ARRAY_SIZE(ath9k_gstrings_stats)
1234 
1235 void ath9k_get_et_strings(struct ieee80211_hw *hw,
1236 			  struct ieee80211_vif *vif,
1237 			  u32 sset, u8 *data)
1238 {
1239 	if (sset == ETH_SS_STATS)
1240 		memcpy(data, *ath9k_gstrings_stats,
1241 		       sizeof(ath9k_gstrings_stats));
1242 }
1243 
1244 int ath9k_get_et_sset_count(struct ieee80211_hw *hw,
1245 			    struct ieee80211_vif *vif, int sset)
1246 {
1247 	if (sset == ETH_SS_STATS)
1248 		return ATH9K_SSTATS_LEN;
1249 	return 0;
1250 }
1251 
1252 #define AWDATA(elem)							\
1253 	do {								\
1254 		data[i++] = sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_BE)].elem; \
1255 		data[i++] = sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_BK)].elem; \
1256 		data[i++] = sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_VI)].elem; \
1257 		data[i++] = sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_VO)].elem; \
1258 	} while (0)
1259 
1260 #define AWDATA_RX(elem)						\
1261 	do {							\
1262 		data[i++] = sc->debug.stats.rxstats.elem;	\
1263 	} while (0)
1264 
1265 void ath9k_get_et_stats(struct ieee80211_hw *hw,
1266 			struct ieee80211_vif *vif,
1267 			struct ethtool_stats *stats, u64 *data)
1268 {
1269 	struct ath_softc *sc = hw->priv;
1270 	int i = 0;
1271 
1272 	data[i++] = (sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_BE)].tx_pkts_all +
1273 		     sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_BK)].tx_pkts_all +
1274 		     sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_VI)].tx_pkts_all +
1275 		     sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_VO)].tx_pkts_all);
1276 	data[i++] = (sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_BE)].tx_bytes_all +
1277 		     sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_BK)].tx_bytes_all +
1278 		     sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_VI)].tx_bytes_all +
1279 		     sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_VO)].tx_bytes_all);
1280 	AWDATA_RX(rx_pkts_all);
1281 	AWDATA_RX(rx_bytes_all);
1282 
1283 	AWDATA(tx_pkts_all);
1284 	AWDATA(tx_bytes_all);
1285 	AWDATA(queued);
1286 	AWDATA(completed);
1287 	AWDATA(xretries);
1288 	AWDATA(a_aggr);
1289 	AWDATA(a_queued_hw);
1290 	AWDATA(a_queued_sw);
1291 	AWDATA(a_completed);
1292 	AWDATA(a_retries);
1293 	AWDATA(a_xretries);
1294 	AWDATA(fifo_underrun);
1295 	AWDATA(xtxop);
1296 	AWDATA(timer_exp);
1297 	AWDATA(desc_cfg_err);
1298 	AWDATA(data_underrun);
1299 	AWDATA(delim_underrun);
1300 
1301 	AWDATA_RX(crc_err);
1302 	AWDATA_RX(decrypt_crc_err);
1303 	AWDATA_RX(phy_err);
1304 	AWDATA_RX(mic_err);
1305 	AWDATA_RX(pre_delim_crc_err);
1306 	AWDATA_RX(post_delim_crc_err);
1307 	AWDATA_RX(decrypt_busy_err);
1308 
1309 	AWDATA_RX(phy_err_stats[ATH9K_PHYERR_RADAR]);
1310 	AWDATA_RX(phy_err_stats[ATH9K_PHYERR_OFDM_TIMING]);
1311 	AWDATA_RX(phy_err_stats[ATH9K_PHYERR_CCK_TIMING]);
1312 
1313 	WARN_ON(i != ATH9K_SSTATS_LEN);
1314 }
1315 
1316 void ath9k_deinit_debug(struct ath_softc *sc)
1317 {
1318 	ath9k_spectral_deinit_debug(sc);
1319 }
1320 
1321 int ath9k_init_debug(struct ath_hw *ah)
1322 {
1323 	struct ath_common *common = ath9k_hw_common(ah);
1324 	struct ath_softc *sc = (struct ath_softc *) common->priv;
1325 
1326 	sc->debug.debugfs_phy = debugfs_create_dir("ath9k",
1327 						   sc->hw->wiphy->debugfsdir);
1328 	if (!sc->debug.debugfs_phy)
1329 		return -ENOMEM;
1330 
1331 #ifdef CONFIG_ATH_DEBUG
1332 	debugfs_create_file("debug", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
1333 			    sc, &fops_debug);
1334 #endif
1335 
1336 	ath9k_dfs_init_debug(sc);
1337 	ath9k_tx99_init_debug(sc);
1338 	ath9k_spectral_init_debug(sc);
1339 
1340 	debugfs_create_file("dma", S_IRUSR, sc->debug.debugfs_phy, sc,
1341 			    &fops_dma);
1342 	debugfs_create_file("interrupt", S_IRUSR, sc->debug.debugfs_phy, sc,
1343 			    &fops_interrupt);
1344 	debugfs_create_file("xmit", S_IRUSR, sc->debug.debugfs_phy, sc,
1345 			    &fops_xmit);
1346 	debugfs_create_file("queues", S_IRUSR, sc->debug.debugfs_phy, sc,
1347 			    &fops_queues);
1348 	debugfs_create_u32("qlen_bk", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
1349 			   &sc->tx.txq_max_pending[IEEE80211_AC_BK]);
1350 	debugfs_create_u32("qlen_be", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
1351 			   &sc->tx.txq_max_pending[IEEE80211_AC_BE]);
1352 	debugfs_create_u32("qlen_vi", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
1353 			   &sc->tx.txq_max_pending[IEEE80211_AC_VI]);
1354 	debugfs_create_u32("qlen_vo", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
1355 			   &sc->tx.txq_max_pending[IEEE80211_AC_VO]);
1356 	debugfs_create_file("misc", S_IRUSR, sc->debug.debugfs_phy, sc,
1357 			    &fops_misc);
1358 	debugfs_create_file("reset", S_IRUSR, sc->debug.debugfs_phy, sc,
1359 			    &fops_reset);
1360 
1361 	ath9k_cmn_debug_recv(sc->debug.debugfs_phy, &sc->debug.stats.rxstats);
1362 	ath9k_cmn_debug_phy_err(sc->debug.debugfs_phy, &sc->debug.stats.rxstats);
1363 
1364 	debugfs_create_u8("rx_chainmask", S_IRUSR, sc->debug.debugfs_phy,
1365 			  &ah->rxchainmask);
1366 	debugfs_create_u8("tx_chainmask", S_IRUSR, sc->debug.debugfs_phy,
1367 			  &ah->txchainmask);
1368 	debugfs_create_file("ani", S_IRUSR | S_IWUSR,
1369 			    sc->debug.debugfs_phy, sc, &fops_ani);
1370 	debugfs_create_bool("paprd", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
1371 			    &sc->sc_ah->config.enable_paprd);
1372 	debugfs_create_file("regidx", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
1373 			    sc, &fops_regidx);
1374 	debugfs_create_file("regval", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
1375 			    sc, &fops_regval);
1376 	debugfs_create_bool("ignore_extcca", S_IRUSR | S_IWUSR,
1377 			    sc->debug.debugfs_phy,
1378 			    &ah->config.cwm_ignore_extcca);
1379 	debugfs_create_file("regdump", S_IRUSR, sc->debug.debugfs_phy, sc,
1380 			    &fops_regdump);
1381 	debugfs_create_file("dump_nfcal", S_IRUSR, sc->debug.debugfs_phy, sc,
1382 			    &fops_dump_nfcal);
1383 
1384 	ath9k_cmn_debug_base_eeprom(sc->debug.debugfs_phy, sc->sc_ah);
1385 	ath9k_cmn_debug_modal_eeprom(sc->debug.debugfs_phy, sc->sc_ah);
1386 
1387 	debugfs_create_u32("gpio_mask", S_IRUSR | S_IWUSR,
1388 			   sc->debug.debugfs_phy, &sc->sc_ah->gpio_mask);
1389 	debugfs_create_u32("gpio_val", S_IRUSR | S_IWUSR,
1390 			   sc->debug.debugfs_phy, &sc->sc_ah->gpio_val);
1391 	debugfs_create_file("antenna_diversity", S_IRUSR,
1392 			    sc->debug.debugfs_phy, sc, &fops_antenna_diversity);
1393 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
1394 	debugfs_create_file("bt_ant_diversity", S_IRUSR | S_IWUSR,
1395 			    sc->debug.debugfs_phy, sc, &fops_bt_ant_diversity);
1396 	debugfs_create_file("btcoex", S_IRUSR, sc->debug.debugfs_phy, sc,
1397 			    &fops_btcoex);
1398 #endif
1399 
1400 #ifdef CONFIG_ATH9K_DYNACK
1401 	debugfs_create_file("ack_to", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
1402 			    sc, &fops_ackto);
1403 #endif
1404 
1405 	return 0;
1406 }
1407