1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * NXP Wireless LAN device driver: debugfs
4 *
5 * Copyright 2011-2020 NXP
6 */
7
8 #include <linux/debugfs.h>
9
10 #include "main.h"
11 #include "11n.h"
12
13
14 static struct dentry *mwifiex_dfs_dir;
15
16 static char *bss_modes[] = {
17 "UNSPECIFIED",
18 "ADHOC",
19 "STATION",
20 "AP",
21 "AP_VLAN",
22 "WDS",
23 "MONITOR",
24 "MESH_POINT",
25 "P2P_CLIENT",
26 "P2P_GO",
27 "P2P_DEVICE",
28 };
29
30 /*
31 * Proc info file read handler.
32 *
33 * This function is called when the 'info' file is opened for reading.
34 * It prints the following driver related information -
35 * - Driver name
36 * - Driver version
37 * - Driver extended version
38 * - Interface name
39 * - BSS mode
40 * - Media state (connected or disconnected)
41 * - MAC address
42 * - Total number of Tx bytes
43 * - Total number of Rx bytes
44 * - Total number of Tx packets
45 * - Total number of Rx packets
46 * - Total number of dropped Tx packets
47 * - Total number of dropped Rx packets
48 * - Total number of corrupted Tx packets
49 * - Total number of corrupted Rx packets
50 * - Carrier status (on or off)
51 * - Tx queue status (started or stopped)
52 *
53 * For STA mode drivers, it also prints the following extra -
54 * - ESSID
55 * - BSSID
56 * - Channel
57 * - Region code
58 * - Multicast count
59 * - Multicast addresses
60 */
61 static ssize_t
mwifiex_info_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)62 mwifiex_info_read(struct file *file, char __user *ubuf,
63 size_t count, loff_t *ppos)
64 {
65 struct mwifiex_private *priv =
66 (struct mwifiex_private *) file->private_data;
67 struct net_device *netdev = priv->netdev;
68 struct netdev_hw_addr *ha;
69 struct netdev_queue *txq;
70 unsigned long page = get_zeroed_page(GFP_KERNEL);
71 char *p = (char *) page, fmt[64];
72 struct mwifiex_bss_info info;
73 ssize_t ret;
74 int i = 0;
75
76 if (!p)
77 return -ENOMEM;
78
79 memset(&info, 0, sizeof(info));
80 ret = mwifiex_get_bss_info(priv, &info);
81 if (ret)
82 goto free_and_exit;
83
84 mwifiex_drv_get_driver_version(priv->adapter, fmt, sizeof(fmt) - 1);
85
86 mwifiex_get_ver_ext(priv, 0);
87
88 p += sprintf(p, "driver_name = " "\"mwifiex\"\n");
89 p += sprintf(p, "driver_version = %s", fmt);
90 p += sprintf(p, "\nverext = %s", priv->version_str);
91 p += sprintf(p, "\ninterface_name=\"%s\"\n", netdev->name);
92
93 if (info.bss_mode >= ARRAY_SIZE(bss_modes))
94 p += sprintf(p, "bss_mode=\"%d\"\n", info.bss_mode);
95 else
96 p += sprintf(p, "bss_mode=\"%s\"\n", bss_modes[info.bss_mode]);
97
98 p += sprintf(p, "media_state=\"%s\"\n",
99 (!priv->media_connected ? "Disconnected" : "Connected"));
100 p += sprintf(p, "mac_address=\"%pM\"\n", netdev->dev_addr);
101
102 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) {
103 p += sprintf(p, "multicast_count=\"%d\"\n",
104 netdev_mc_count(netdev));
105 p += sprintf(p, "essid=\"%.*s\"\n", info.ssid.ssid_len,
106 info.ssid.ssid);
107 p += sprintf(p, "bssid=\"%pM\"\n", info.bssid);
108 p += sprintf(p, "channel=\"%d\"\n", (int) info.bss_chan);
109 p += sprintf(p, "country_code = \"%s\"\n", info.country_code);
110 p += sprintf(p, "region_code=\"0x%x\"\n",
111 priv->adapter->region_code);
112
113 netdev_for_each_mc_addr(ha, netdev)
114 p += sprintf(p, "multicast_address[%d]=\"%pM\"\n",
115 i++, ha->addr);
116 }
117
118 p += sprintf(p, "num_tx_bytes = %lu\n", priv->stats.tx_bytes);
119 p += sprintf(p, "num_rx_bytes = %lu\n", priv->stats.rx_bytes);
120 p += sprintf(p, "num_tx_pkts = %lu\n", priv->stats.tx_packets);
121 p += sprintf(p, "num_rx_pkts = %lu\n", priv->stats.rx_packets);
122 p += sprintf(p, "num_tx_pkts_dropped = %lu\n", priv->stats.tx_dropped);
123 p += sprintf(p, "num_rx_pkts_dropped = %lu\n", priv->stats.rx_dropped);
124 p += sprintf(p, "num_tx_pkts_err = %lu\n", priv->stats.tx_errors);
125 p += sprintf(p, "num_rx_pkts_err = %lu\n", priv->stats.rx_errors);
126 p += sprintf(p, "carrier %s\n", ((netif_carrier_ok(priv->netdev))
127 ? "on" : "off"));
128 p += sprintf(p, "tx queue");
129 for (i = 0; i < netdev->num_tx_queues; i++) {
130 txq = netdev_get_tx_queue(netdev, i);
131 p += sprintf(p, " %d:%s", i, netif_tx_queue_stopped(txq) ?
132 "stopped" : "started");
133 }
134 p += sprintf(p, "\n");
135
136 ret = simple_read_from_buffer(ubuf, count, ppos, (char *) page,
137 (unsigned long) p - page);
138
139 free_and_exit:
140 free_page(page);
141 return ret;
142 }
143
144 /*
145 * Proc getlog file read handler.
146 *
147 * This function is called when the 'getlog' file is opened for reading
148 * It prints the following log information -
149 * - Number of multicast Tx frames
150 * - Number of failed packets
151 * - Number of Tx retries
152 * - Number of multicast Tx retries
153 * - Number of duplicate frames
154 * - Number of RTS successes
155 * - Number of RTS failures
156 * - Number of ACK failures
157 * - Number of fragmented Rx frames
158 * - Number of multicast Rx frames
159 * - Number of FCS errors
160 * - Number of Tx frames
161 * - WEP ICV error counts
162 * - Number of received beacons
163 * - Number of missed beacons
164 */
165 static ssize_t
mwifiex_getlog_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)166 mwifiex_getlog_read(struct file *file, char __user *ubuf,
167 size_t count, loff_t *ppos)
168 {
169 struct mwifiex_private *priv =
170 (struct mwifiex_private *) file->private_data;
171 unsigned long page = get_zeroed_page(GFP_KERNEL);
172 char *p = (char *) page;
173 ssize_t ret;
174 struct mwifiex_ds_get_stats stats;
175
176 if (!p)
177 return -ENOMEM;
178
179 memset(&stats, 0, sizeof(stats));
180 ret = mwifiex_get_stats_info(priv, &stats);
181 if (ret)
182 goto free_and_exit;
183
184 p += sprintf(p, "\n"
185 "mcasttxframe %u\n"
186 "failed %u\n"
187 "retry %u\n"
188 "multiretry %u\n"
189 "framedup %u\n"
190 "rtssuccess %u\n"
191 "rtsfailure %u\n"
192 "ackfailure %u\n"
193 "rxfrag %u\n"
194 "mcastrxframe %u\n"
195 "fcserror %u\n"
196 "txframe %u\n"
197 "wepicverrcnt-1 %u\n"
198 "wepicverrcnt-2 %u\n"
199 "wepicverrcnt-3 %u\n"
200 "wepicverrcnt-4 %u\n"
201 "bcn_rcv_cnt %u\n"
202 "bcn_miss_cnt %u\n",
203 stats.mcast_tx_frame,
204 stats.failed,
205 stats.retry,
206 stats.multi_retry,
207 stats.frame_dup,
208 stats.rts_success,
209 stats.rts_failure,
210 stats.ack_failure,
211 stats.rx_frag,
212 stats.mcast_rx_frame,
213 stats.fcs_error,
214 stats.tx_frame,
215 stats.wep_icv_error[0],
216 stats.wep_icv_error[1],
217 stats.wep_icv_error[2],
218 stats.wep_icv_error[3],
219 stats.bcn_rcv_cnt,
220 stats.bcn_miss_cnt);
221
222
223 ret = simple_read_from_buffer(ubuf, count, ppos, (char *) page,
224 (unsigned long) p - page);
225
226 free_and_exit:
227 free_page(page);
228 return ret;
229 }
230
231 /* Sysfs histogram file read handler.
232 *
233 * This function is called when the 'histogram' file is opened for reading
234 * It prints the following histogram information -
235 * - Number of histogram samples
236 * - Receive packet number of each rx_rate
237 * - Receive packet number of each snr
238 * - Receive packet number of each nosie_flr
239 * - Receive packet number of each signal streath
240 */
241 static ssize_t
mwifiex_histogram_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)242 mwifiex_histogram_read(struct file *file, char __user *ubuf,
243 size_t count, loff_t *ppos)
244 {
245 struct mwifiex_private *priv =
246 (struct mwifiex_private *)file->private_data;
247 ssize_t ret;
248 struct mwifiex_histogram_data *phist_data;
249 int i, value;
250 unsigned long page = get_zeroed_page(GFP_KERNEL);
251 char *p = (char *)page;
252
253 if (!p)
254 return -ENOMEM;
255
256 if (!priv || !priv->hist_data)
257 return -EFAULT;
258 phist_data = priv->hist_data;
259
260 p += sprintf(p, "\n"
261 "total samples = %d\n",
262 atomic_read(&phist_data->num_samples));
263
264 p += sprintf(p,
265 "rx rates (in Mbps): 0=1M 1=2M 2=5.5M 3=11M 4=6M 5=9M 6=12M\n"
266 "7=18M 8=24M 9=36M 10=48M 11=54M 12-27=MCS0-15(BW20) 28-43=MCS0-15(BW40)\n");
267
268 if (ISSUPP_11ACENABLED(priv->adapter->fw_cap_info)) {
269 p += sprintf(p,
270 "44-53=MCS0-9(VHT:BW20) 54-63=MCS0-9(VHT:BW40) 64-73=MCS0-9(VHT:BW80)\n\n");
271 } else {
272 p += sprintf(p, "\n");
273 }
274
275 for (i = 0; i < MWIFIEX_MAX_RX_RATES; i++) {
276 value = atomic_read(&phist_data->rx_rate[i]);
277 if (value)
278 p += sprintf(p, "rx_rate[%02d] = %d\n", i, value);
279 }
280
281 if (ISSUPP_11ACENABLED(priv->adapter->fw_cap_info)) {
282 for (i = MWIFIEX_MAX_RX_RATES; i < MWIFIEX_MAX_AC_RX_RATES;
283 i++) {
284 value = atomic_read(&phist_data->rx_rate[i]);
285 if (value)
286 p += sprintf(p, "rx_rate[%02d] = %d\n",
287 i, value);
288 }
289 }
290
291 for (i = 0; i < MWIFIEX_MAX_SNR; i++) {
292 value = atomic_read(&phist_data->snr[i]);
293 if (value)
294 p += sprintf(p, "snr[%02ddB] = %d\n", i, value);
295 }
296 for (i = 0; i < MWIFIEX_MAX_NOISE_FLR; i++) {
297 value = atomic_read(&phist_data->noise_flr[i]);
298 if (value)
299 p += sprintf(p, "noise_flr[%02ddBm] = %d\n",
300 (int)(i-128), value);
301 }
302 for (i = 0; i < MWIFIEX_MAX_SIG_STRENGTH; i++) {
303 value = atomic_read(&phist_data->sig_str[i]);
304 if (value)
305 p += sprintf(p, "sig_strength[-%02ddBm] = %d\n",
306 i, value);
307 }
308
309 ret = simple_read_from_buffer(ubuf, count, ppos, (char *)page,
310 (unsigned long)p - page);
311
312 return ret;
313 }
314
315 static ssize_t
mwifiex_histogram_write(struct file * file,const char __user * ubuf,size_t count,loff_t * ppos)316 mwifiex_histogram_write(struct file *file, const char __user *ubuf,
317 size_t count, loff_t *ppos)
318 {
319 struct mwifiex_private *priv = (void *)file->private_data;
320
321 if (priv && priv->hist_data)
322 mwifiex_hist_data_reset(priv);
323 return 0;
324 }
325
326 static struct mwifiex_debug_info info;
327
328 /*
329 * Proc debug file read handler.
330 *
331 * This function is called when the 'debug' file is opened for reading
332 * It prints the following log information -
333 * - Interrupt count
334 * - WMM AC VO packets count
335 * - WMM AC VI packets count
336 * - WMM AC BE packets count
337 * - WMM AC BK packets count
338 * - Maximum Tx buffer size
339 * - Tx buffer size
340 * - Current Tx buffer size
341 * - Power Save mode
342 * - Power Save state
343 * - Deep Sleep status
344 * - Device wakeup required status
345 * - Number of wakeup tries
346 * - Host Sleep configured status
347 * - Host Sleep activated status
348 * - Number of Tx timeouts
349 * - Number of command timeouts
350 * - Last timed out command ID
351 * - Last timed out command action
352 * - Last command ID
353 * - Last command action
354 * - Last command index
355 * - Last command response ID
356 * - Last command response index
357 * - Last event
358 * - Last event index
359 * - Number of host to card command failures
360 * - Number of sleep confirm command failures
361 * - Number of host to card data failure
362 * - Number of deauthentication events
363 * - Number of disassociation events
364 * - Number of link lost events
365 * - Number of deauthentication commands
366 * - Number of association success commands
367 * - Number of association failure commands
368 * - Number of commands sent
369 * - Number of data packets sent
370 * - Number of command responses received
371 * - Number of events received
372 * - Tx BA stream table (TID, RA)
373 * - Rx reorder table (TID, TA, Start window, Window size, Buffer)
374 */
375 static ssize_t
mwifiex_debug_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)376 mwifiex_debug_read(struct file *file, char __user *ubuf,
377 size_t count, loff_t *ppos)
378 {
379 struct mwifiex_private *priv =
380 (struct mwifiex_private *) file->private_data;
381 unsigned long page = get_zeroed_page(GFP_KERNEL);
382 char *p = (char *) page;
383 ssize_t ret;
384
385 if (!p)
386 return -ENOMEM;
387
388 ret = mwifiex_get_debug_info(priv, &info);
389 if (ret)
390 goto free_and_exit;
391
392 p += mwifiex_debug_info_to_buffer(priv, p, &info);
393
394 ret = simple_read_from_buffer(ubuf, count, ppos, (char *) page,
395 (unsigned long) p - page);
396
397 free_and_exit:
398 free_page(page);
399 return ret;
400 }
401
402 static u32 saved_reg_type, saved_reg_offset, saved_reg_value;
403
404 /*
405 * Proc regrdwr file write handler.
406 *
407 * This function is called when the 'regrdwr' file is opened for writing
408 *
409 * This function can be used to write to a register.
410 */
411 static ssize_t
mwifiex_regrdwr_write(struct file * file,const char __user * ubuf,size_t count,loff_t * ppos)412 mwifiex_regrdwr_write(struct file *file,
413 const char __user *ubuf, size_t count, loff_t *ppos)
414 {
415 char *buf;
416 int ret;
417 u32 reg_type = 0, reg_offset = 0, reg_value = UINT_MAX;
418
419 buf = memdup_user_nul(ubuf, min(count, (size_t)(PAGE_SIZE - 1)));
420 if (IS_ERR(buf))
421 return PTR_ERR(buf);
422
423 sscanf(buf, "%u %x %x", ®_type, ®_offset, ®_value);
424
425 if (reg_type == 0 || reg_offset == 0) {
426 ret = -EINVAL;
427 goto done;
428 } else {
429 saved_reg_type = reg_type;
430 saved_reg_offset = reg_offset;
431 saved_reg_value = reg_value;
432 ret = count;
433 }
434 done:
435 kfree(buf);
436 return ret;
437 }
438
439 /*
440 * Proc regrdwr file read handler.
441 *
442 * This function is called when the 'regrdwr' file is opened for reading
443 *
444 * This function can be used to read from a register.
445 */
446 static ssize_t
mwifiex_regrdwr_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)447 mwifiex_regrdwr_read(struct file *file, char __user *ubuf,
448 size_t count, loff_t *ppos)
449 {
450 struct mwifiex_private *priv =
451 (struct mwifiex_private *) file->private_data;
452 unsigned long addr = get_zeroed_page(GFP_KERNEL);
453 char *buf = (char *) addr;
454 int pos = 0, ret = 0;
455 u32 reg_value;
456
457 if (!buf)
458 return -ENOMEM;
459
460 if (!saved_reg_type) {
461 /* No command has been given */
462 pos += snprintf(buf, PAGE_SIZE, "0");
463 goto done;
464 }
465 /* Set command has been given */
466 if (saved_reg_value != UINT_MAX) {
467 ret = mwifiex_reg_write(priv, saved_reg_type, saved_reg_offset,
468 saved_reg_value);
469
470 pos += snprintf(buf, PAGE_SIZE, "%u 0x%x 0x%x\n",
471 saved_reg_type, saved_reg_offset,
472 saved_reg_value);
473
474 ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos);
475
476 goto done;
477 }
478 /* Get command has been given */
479 ret = mwifiex_reg_read(priv, saved_reg_type,
480 saved_reg_offset, ®_value);
481 if (ret) {
482 ret = -EINVAL;
483 goto done;
484 }
485
486 pos += snprintf(buf, PAGE_SIZE, "%u 0x%x 0x%x\n", saved_reg_type,
487 saved_reg_offset, reg_value);
488
489 ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos);
490
491 done:
492 free_page(addr);
493 return ret;
494 }
495
496 /* Proc debug_mask file read handler.
497 * This function is called when the 'debug_mask' file is opened for reading
498 * This function can be used read driver debugging mask value.
499 */
500 static ssize_t
mwifiex_debug_mask_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)501 mwifiex_debug_mask_read(struct file *file, char __user *ubuf,
502 size_t count, loff_t *ppos)
503 {
504 struct mwifiex_private *priv =
505 (struct mwifiex_private *)file->private_data;
506 unsigned long page = get_zeroed_page(GFP_KERNEL);
507 char *buf = (char *)page;
508 size_t ret = 0;
509 int pos = 0;
510
511 if (!buf)
512 return -ENOMEM;
513
514 pos += snprintf(buf, PAGE_SIZE, "debug mask=0x%08x\n",
515 priv->adapter->debug_mask);
516 ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos);
517
518 free_page(page);
519 return ret;
520 }
521
522 /* Proc debug_mask file read handler.
523 * This function is called when the 'debug_mask' file is opened for reading
524 * This function can be used read driver debugging mask value.
525 */
526 static ssize_t
mwifiex_debug_mask_write(struct file * file,const char __user * ubuf,size_t count,loff_t * ppos)527 mwifiex_debug_mask_write(struct file *file, const char __user *ubuf,
528 size_t count, loff_t *ppos)
529 {
530 int ret;
531 unsigned long debug_mask;
532 struct mwifiex_private *priv = (void *)file->private_data;
533 char *buf;
534
535 buf = memdup_user_nul(ubuf, min(count, (size_t)(PAGE_SIZE - 1)));
536 if (IS_ERR(buf))
537 return PTR_ERR(buf);
538
539 if (kstrtoul(buf, 0, &debug_mask)) {
540 ret = -EINVAL;
541 goto done;
542 }
543
544 priv->adapter->debug_mask = debug_mask;
545 ret = count;
546 done:
547 kfree(buf);
548 return ret;
549 }
550
551 /* debugfs verext file write handler.
552 * This function is called when the 'verext' file is opened for write
553 */
554 static ssize_t
mwifiex_verext_write(struct file * file,const char __user * ubuf,size_t count,loff_t * ppos)555 mwifiex_verext_write(struct file *file, const char __user *ubuf,
556 size_t count, loff_t *ppos)
557 {
558 int ret;
559 u32 versionstrsel;
560 struct mwifiex_private *priv = (void *)file->private_data;
561 char buf[16];
562
563 memset(buf, 0, sizeof(buf));
564
565 if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
566 return -EFAULT;
567
568 ret = kstrtou32(buf, 10, &versionstrsel);
569 if (ret)
570 return ret;
571
572 priv->versionstrsel = versionstrsel;
573
574 return count;
575 }
576
577 /* Proc verext file read handler.
578 * This function is called when the 'verext' file is opened for reading
579 * This function can be used read driver exteneed verion string.
580 */
581 static ssize_t
mwifiex_verext_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)582 mwifiex_verext_read(struct file *file, char __user *ubuf,
583 size_t count, loff_t *ppos)
584 {
585 struct mwifiex_private *priv =
586 (struct mwifiex_private *)file->private_data;
587 char buf[256];
588 int ret;
589
590 mwifiex_get_ver_ext(priv, priv->versionstrsel);
591 ret = snprintf(buf, sizeof(buf), "version string: %s\n",
592 priv->version_str);
593
594 return simple_read_from_buffer(ubuf, count, ppos, buf, ret);
595 }
596
597 /* Proc memrw file write handler.
598 * This function is called when the 'memrw' file is opened for writing
599 * This function can be used to write to a memory location.
600 */
601 static ssize_t
mwifiex_memrw_write(struct file * file,const char __user * ubuf,size_t count,loff_t * ppos)602 mwifiex_memrw_write(struct file *file, const char __user *ubuf, size_t count,
603 loff_t *ppos)
604 {
605 int ret;
606 char cmd;
607 struct mwifiex_ds_mem_rw mem_rw;
608 u16 cmd_action;
609 struct mwifiex_private *priv = (void *)file->private_data;
610 char *buf;
611
612 buf = memdup_user_nul(ubuf, min(count, (size_t)(PAGE_SIZE - 1)));
613 if (IS_ERR(buf))
614 return PTR_ERR(buf);
615
616 ret = sscanf(buf, "%c %x %x", &cmd, &mem_rw.addr, &mem_rw.value);
617 if (ret != 3) {
618 ret = -EINVAL;
619 goto done;
620 }
621
622 if ((cmd == 'r') || (cmd == 'R')) {
623 cmd_action = HostCmd_ACT_GEN_GET;
624 mem_rw.value = 0;
625 } else if ((cmd == 'w') || (cmd == 'W')) {
626 cmd_action = HostCmd_ACT_GEN_SET;
627 } else {
628 ret = -EINVAL;
629 goto done;
630 }
631
632 memcpy(&priv->mem_rw, &mem_rw, sizeof(mem_rw));
633 if (mwifiex_send_cmd(priv, HostCmd_CMD_MEM_ACCESS, cmd_action, 0,
634 &mem_rw, true))
635 ret = -1;
636 else
637 ret = count;
638
639 done:
640 kfree(buf);
641 return ret;
642 }
643
644 /* Proc memrw file read handler.
645 * This function is called when the 'memrw' file is opened for reading
646 * This function can be used to read from a memory location.
647 */
648 static ssize_t
mwifiex_memrw_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)649 mwifiex_memrw_read(struct file *file, char __user *ubuf,
650 size_t count, loff_t *ppos)
651 {
652 struct mwifiex_private *priv = (void *)file->private_data;
653 unsigned long addr = get_zeroed_page(GFP_KERNEL);
654 char *buf = (char *)addr;
655 int ret, pos = 0;
656
657 if (!buf)
658 return -ENOMEM;
659
660 pos += snprintf(buf, PAGE_SIZE, "0x%x 0x%x\n", priv->mem_rw.addr,
661 priv->mem_rw.value);
662 ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos);
663
664 free_page(addr);
665 return ret;
666 }
667
668 static u32 saved_offset = -1, saved_bytes = -1;
669
670 /*
671 * Proc rdeeprom file write handler.
672 *
673 * This function is called when the 'rdeeprom' file is opened for writing
674 *
675 * This function can be used to write to a RDEEPROM location.
676 */
677 static ssize_t
mwifiex_rdeeprom_write(struct file * file,const char __user * ubuf,size_t count,loff_t * ppos)678 mwifiex_rdeeprom_write(struct file *file,
679 const char __user *ubuf, size_t count, loff_t *ppos)
680 {
681 char *buf;
682 int ret = 0;
683 int offset = -1, bytes = -1;
684
685 buf = memdup_user_nul(ubuf, min(count, (size_t)(PAGE_SIZE - 1)));
686 if (IS_ERR(buf))
687 return PTR_ERR(buf);
688
689 sscanf(buf, "%d %d", &offset, &bytes);
690
691 if (offset == -1 || bytes == -1) {
692 ret = -EINVAL;
693 goto done;
694 } else {
695 saved_offset = offset;
696 saved_bytes = bytes;
697 ret = count;
698 }
699 done:
700 kfree(buf);
701 return ret;
702 }
703
704 /*
705 * Proc rdeeprom read write handler.
706 *
707 * This function is called when the 'rdeeprom' file is opened for reading
708 *
709 * This function can be used to read from a RDEEPROM location.
710 */
711 static ssize_t
mwifiex_rdeeprom_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)712 mwifiex_rdeeprom_read(struct file *file, char __user *ubuf,
713 size_t count, loff_t *ppos)
714 {
715 struct mwifiex_private *priv =
716 (struct mwifiex_private *) file->private_data;
717 unsigned long addr = get_zeroed_page(GFP_KERNEL);
718 char *buf = (char *) addr;
719 int pos, ret, i;
720 u8 value[MAX_EEPROM_DATA];
721
722 if (!buf)
723 return -ENOMEM;
724
725 if (saved_offset == -1) {
726 /* No command has been given */
727 pos = snprintf(buf, PAGE_SIZE, "0");
728 goto done;
729 }
730
731 /* Get command has been given */
732 ret = mwifiex_eeprom_read(priv, (u16) saved_offset,
733 (u16) saved_bytes, value);
734 if (ret) {
735 ret = -EINVAL;
736 goto out_free;
737 }
738
739 pos = snprintf(buf, PAGE_SIZE, "%d %d ", saved_offset, saved_bytes);
740
741 for (i = 0; i < saved_bytes; i++)
742 pos += scnprintf(buf + pos, PAGE_SIZE - pos, "%d ", value[i]);
743
744 done:
745 ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos);
746 out_free:
747 free_page(addr);
748 return ret;
749 }
750
751 /* Proc hscfg file write handler
752 * This function can be used to configure the host sleep parameters.
753 */
754 static ssize_t
mwifiex_hscfg_write(struct file * file,const char __user * ubuf,size_t count,loff_t * ppos)755 mwifiex_hscfg_write(struct file *file, const char __user *ubuf,
756 size_t count, loff_t *ppos)
757 {
758 struct mwifiex_private *priv = (void *)file->private_data;
759 char *buf;
760 int ret, arg_num;
761 struct mwifiex_ds_hs_cfg hscfg;
762 int conditions = HS_CFG_COND_DEF;
763 u32 gpio = HS_CFG_GPIO_DEF, gap = HS_CFG_GAP_DEF;
764
765 buf = memdup_user_nul(ubuf, min(count, (size_t)(PAGE_SIZE - 1)));
766 if (IS_ERR(buf))
767 return PTR_ERR(buf);
768
769 arg_num = sscanf(buf, "%d %x %x", &conditions, &gpio, &gap);
770
771 memset(&hscfg, 0, sizeof(struct mwifiex_ds_hs_cfg));
772
773 if (arg_num > 3) {
774 mwifiex_dbg(priv->adapter, ERROR,
775 "Too many arguments\n");
776 ret = -EINVAL;
777 goto done;
778 }
779
780 if (arg_num >= 1 && arg_num < 3)
781 mwifiex_set_hs_params(priv, HostCmd_ACT_GEN_GET,
782 MWIFIEX_SYNC_CMD, &hscfg);
783
784 if (arg_num) {
785 if (conditions == HS_CFG_CANCEL) {
786 mwifiex_cancel_hs(priv, MWIFIEX_ASYNC_CMD);
787 ret = count;
788 goto done;
789 }
790 hscfg.conditions = conditions;
791 }
792 if (arg_num >= 2)
793 hscfg.gpio = gpio;
794 if (arg_num == 3)
795 hscfg.gap = gap;
796
797 hscfg.is_invoke_hostcmd = false;
798 mwifiex_set_hs_params(priv, HostCmd_ACT_GEN_SET,
799 MWIFIEX_SYNC_CMD, &hscfg);
800
801 mwifiex_enable_hs(priv->adapter);
802 clear_bit(MWIFIEX_IS_HS_ENABLING, &priv->adapter->work_flags);
803 ret = count;
804 done:
805 kfree(buf);
806 return ret;
807 }
808
809 /* Proc hscfg file read handler
810 * This function can be used to read host sleep configuration
811 * parameters from driver.
812 */
813 static ssize_t
mwifiex_hscfg_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)814 mwifiex_hscfg_read(struct file *file, char __user *ubuf,
815 size_t count, loff_t *ppos)
816 {
817 struct mwifiex_private *priv = (void *)file->private_data;
818 unsigned long addr = get_zeroed_page(GFP_KERNEL);
819 char *buf = (char *)addr;
820 int pos, ret;
821 struct mwifiex_ds_hs_cfg hscfg;
822
823 if (!buf)
824 return -ENOMEM;
825
826 mwifiex_set_hs_params(priv, HostCmd_ACT_GEN_GET,
827 MWIFIEX_SYNC_CMD, &hscfg);
828
829 pos = snprintf(buf, PAGE_SIZE, "%u 0x%x 0x%x\n", hscfg.conditions,
830 hscfg.gpio, hscfg.gap);
831
832 ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos);
833
834 free_page(addr);
835 return ret;
836 }
837
838 static ssize_t
mwifiex_timeshare_coex_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)839 mwifiex_timeshare_coex_read(struct file *file, char __user *ubuf,
840 size_t count, loff_t *ppos)
841 {
842 struct mwifiex_private *priv = file->private_data;
843 char buf[3];
844 bool timeshare_coex;
845 int ret;
846 unsigned int len;
847
848 if (priv->adapter->fw_api_ver != MWIFIEX_FW_V15)
849 return -EOPNOTSUPP;
850
851 ret = mwifiex_send_cmd(priv, HostCmd_CMD_ROBUST_COEX,
852 HostCmd_ACT_GEN_GET, 0, ×hare_coex, true);
853 if (ret)
854 return ret;
855
856 len = sprintf(buf, "%d\n", timeshare_coex);
857 return simple_read_from_buffer(ubuf, count, ppos, buf, len);
858 }
859
860 static ssize_t
mwifiex_timeshare_coex_write(struct file * file,const char __user * ubuf,size_t count,loff_t * ppos)861 mwifiex_timeshare_coex_write(struct file *file, const char __user *ubuf,
862 size_t count, loff_t *ppos)
863 {
864 bool timeshare_coex;
865 struct mwifiex_private *priv = file->private_data;
866 char kbuf[16];
867 int ret;
868
869 if (priv->adapter->fw_api_ver != MWIFIEX_FW_V15)
870 return -EOPNOTSUPP;
871
872 memset(kbuf, 0, sizeof(kbuf));
873
874 if (copy_from_user(&kbuf, ubuf, min_t(size_t, sizeof(kbuf) - 1, count)))
875 return -EFAULT;
876
877 if (strtobool(kbuf, ×hare_coex))
878 return -EINVAL;
879
880 ret = mwifiex_send_cmd(priv, HostCmd_CMD_ROBUST_COEX,
881 HostCmd_ACT_GEN_SET, 0, ×hare_coex, true);
882 if (ret)
883 return ret;
884 else
885 return count;
886 }
887
888 static ssize_t
mwifiex_reset_write(struct file * file,const char __user * ubuf,size_t count,loff_t * ppos)889 mwifiex_reset_write(struct file *file,
890 const char __user *ubuf, size_t count, loff_t *ppos)
891 {
892 struct mwifiex_private *priv = file->private_data;
893 struct mwifiex_adapter *adapter = priv->adapter;
894 bool result;
895 int rc;
896
897 rc = kstrtobool_from_user(ubuf, count, &result);
898 if (rc)
899 return rc;
900
901 if (!result)
902 return -EINVAL;
903
904 if (adapter->if_ops.card_reset) {
905 dev_info(adapter->dev, "Resetting per request\n");
906 adapter->if_ops.card_reset(adapter);
907 }
908
909 return count;
910 }
911
912 #define MWIFIEX_DFS_ADD_FILE(name) do { \
913 debugfs_create_file(#name, 0644, priv->dfs_dev_dir, priv, \
914 &mwifiex_dfs_##name##_fops); \
915 } while (0);
916
917 #define MWIFIEX_DFS_FILE_OPS(name) \
918 static const struct file_operations mwifiex_dfs_##name##_fops = { \
919 .read = mwifiex_##name##_read, \
920 .write = mwifiex_##name##_write, \
921 .open = simple_open, \
922 };
923
924 #define MWIFIEX_DFS_FILE_READ_OPS(name) \
925 static const struct file_operations mwifiex_dfs_##name##_fops = { \
926 .read = mwifiex_##name##_read, \
927 .open = simple_open, \
928 };
929
930 #define MWIFIEX_DFS_FILE_WRITE_OPS(name) \
931 static const struct file_operations mwifiex_dfs_##name##_fops = { \
932 .write = mwifiex_##name##_write, \
933 .open = simple_open, \
934 };
935
936
937 MWIFIEX_DFS_FILE_READ_OPS(info);
938 MWIFIEX_DFS_FILE_READ_OPS(debug);
939 MWIFIEX_DFS_FILE_READ_OPS(getlog);
940 MWIFIEX_DFS_FILE_OPS(regrdwr);
941 MWIFIEX_DFS_FILE_OPS(rdeeprom);
942 MWIFIEX_DFS_FILE_OPS(memrw);
943 MWIFIEX_DFS_FILE_OPS(hscfg);
944 MWIFIEX_DFS_FILE_OPS(histogram);
945 MWIFIEX_DFS_FILE_OPS(debug_mask);
946 MWIFIEX_DFS_FILE_OPS(timeshare_coex);
947 MWIFIEX_DFS_FILE_WRITE_OPS(reset);
948 MWIFIEX_DFS_FILE_OPS(verext);
949
950 /*
951 * This function creates the debug FS directory structure and the files.
952 */
953 void
mwifiex_dev_debugfs_init(struct mwifiex_private * priv)954 mwifiex_dev_debugfs_init(struct mwifiex_private *priv)
955 {
956 if (!mwifiex_dfs_dir || !priv)
957 return;
958
959 priv->dfs_dev_dir = debugfs_create_dir(priv->netdev->name,
960 mwifiex_dfs_dir);
961
962 if (!priv->dfs_dev_dir)
963 return;
964
965 MWIFIEX_DFS_ADD_FILE(info);
966 MWIFIEX_DFS_ADD_FILE(debug);
967 MWIFIEX_DFS_ADD_FILE(getlog);
968 MWIFIEX_DFS_ADD_FILE(regrdwr);
969 MWIFIEX_DFS_ADD_FILE(rdeeprom);
970
971 MWIFIEX_DFS_ADD_FILE(memrw);
972 MWIFIEX_DFS_ADD_FILE(hscfg);
973 MWIFIEX_DFS_ADD_FILE(histogram);
974 MWIFIEX_DFS_ADD_FILE(debug_mask);
975 MWIFIEX_DFS_ADD_FILE(timeshare_coex);
976 MWIFIEX_DFS_ADD_FILE(reset);
977 MWIFIEX_DFS_ADD_FILE(verext);
978 }
979
980 /*
981 * This function removes the debug FS directory structure and the files.
982 */
983 void
mwifiex_dev_debugfs_remove(struct mwifiex_private * priv)984 mwifiex_dev_debugfs_remove(struct mwifiex_private *priv)
985 {
986 if (!priv)
987 return;
988
989 debugfs_remove_recursive(priv->dfs_dev_dir);
990 }
991
992 /*
993 * This function creates the top level proc directory.
994 */
995 void
mwifiex_debugfs_init(void)996 mwifiex_debugfs_init(void)
997 {
998 if (!mwifiex_dfs_dir)
999 mwifiex_dfs_dir = debugfs_create_dir("mwifiex", NULL);
1000 }
1001
1002 /*
1003 * This function removes the top level proc directory.
1004 */
1005 void
mwifiex_debugfs_remove(void)1006 mwifiex_debugfs_remove(void)
1007 {
1008 debugfs_remove(mwifiex_dfs_dir);
1009 }
1010