1 /*
2 * Marvell Wireless LAN device driver: debugfs
3 *
4 * Copyright (C) 2011-2014, Marvell International Ltd.
5 *
6 * This software file (the "File") is distributed by Marvell International
7 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
8 * (the "License"). You may use, redistribute and/or modify this File in
9 * accordance with the terms and conditions of the License, a copy of which
10 * is available by writing to the Free Software Foundation, Inc.,
11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
13 *
14 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
16 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about
17 * this warranty disclaimer.
18 */
19
20 #include <linux/debugfs.h>
21
22 #include "main.h"
23 #include "11n.h"
24
25
26 static struct dentry *mwifiex_dfs_dir;
27
28 static char *bss_modes[] = {
29 "UNSPECIFIED",
30 "ADHOC",
31 "STATION",
32 "AP",
33 "AP_VLAN",
34 "WDS",
35 "MONITOR",
36 "MESH_POINT",
37 "P2P_CLIENT",
38 "P2P_GO",
39 "P2P_DEVICE",
40 };
41
42 /*
43 * Proc info file read handler.
44 *
45 * This function is called when the 'info' file is opened for reading.
46 * It prints the following driver related information -
47 * - Driver name
48 * - Driver version
49 * - Driver extended version
50 * - Interface name
51 * - BSS mode
52 * - Media state (connected or disconnected)
53 * - MAC address
54 * - Total number of Tx bytes
55 * - Total number of Rx bytes
56 * - Total number of Tx packets
57 * - Total number of Rx packets
58 * - Total number of dropped Tx packets
59 * - Total number of dropped Rx packets
60 * - Total number of corrupted Tx packets
61 * - Total number of corrupted Rx packets
62 * - Carrier status (on or off)
63 * - Tx queue status (started or stopped)
64 *
65 * For STA mode drivers, it also prints the following extra -
66 * - ESSID
67 * - BSSID
68 * - Channel
69 * - Region code
70 * - Multicast count
71 * - Multicast addresses
72 */
73 static ssize_t
mwifiex_info_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)74 mwifiex_info_read(struct file *file, char __user *ubuf,
75 size_t count, loff_t *ppos)
76 {
77 struct mwifiex_private *priv =
78 (struct mwifiex_private *) file->private_data;
79 struct net_device *netdev = priv->netdev;
80 struct netdev_hw_addr *ha;
81 struct netdev_queue *txq;
82 unsigned long page = get_zeroed_page(GFP_KERNEL);
83 char *p = (char *) page, fmt[64];
84 struct mwifiex_bss_info info;
85 ssize_t ret;
86 int i = 0;
87
88 if (!p)
89 return -ENOMEM;
90
91 memset(&info, 0, sizeof(info));
92 ret = mwifiex_get_bss_info(priv, &info);
93 if (ret)
94 goto free_and_exit;
95
96 mwifiex_drv_get_driver_version(priv->adapter, fmt, sizeof(fmt) - 1);
97
98 mwifiex_get_ver_ext(priv, 0);
99
100 p += sprintf(p, "driver_name = " "\"mwifiex\"\n");
101 p += sprintf(p, "driver_version = %s", fmt);
102 p += sprintf(p, "\nverext = %s", priv->version_str);
103 p += sprintf(p, "\ninterface_name=\"%s\"\n", netdev->name);
104
105 if (info.bss_mode >= ARRAY_SIZE(bss_modes))
106 p += sprintf(p, "bss_mode=\"%d\"\n", info.bss_mode);
107 else
108 p += sprintf(p, "bss_mode=\"%s\"\n", bss_modes[info.bss_mode]);
109
110 p += sprintf(p, "media_state=\"%s\"\n",
111 (!priv->media_connected ? "Disconnected" : "Connected"));
112 p += sprintf(p, "mac_address=\"%pM\"\n", netdev->dev_addr);
113
114 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) {
115 p += sprintf(p, "multicast_count=\"%d\"\n",
116 netdev_mc_count(netdev));
117 p += sprintf(p, "essid=\"%.*s\"\n", info.ssid.ssid_len,
118 info.ssid.ssid);
119 p += sprintf(p, "bssid=\"%pM\"\n", info.bssid);
120 p += sprintf(p, "channel=\"%d\"\n", (int) info.bss_chan);
121 p += sprintf(p, "country_code = \"%s\"\n", info.country_code);
122 p += sprintf(p, "region_code=\"0x%x\"\n",
123 priv->adapter->region_code);
124
125 netdev_for_each_mc_addr(ha, netdev)
126 p += sprintf(p, "multicast_address[%d]=\"%pM\"\n",
127 i++, ha->addr);
128 }
129
130 p += sprintf(p, "num_tx_bytes = %lu\n", priv->stats.tx_bytes);
131 p += sprintf(p, "num_rx_bytes = %lu\n", priv->stats.rx_bytes);
132 p += sprintf(p, "num_tx_pkts = %lu\n", priv->stats.tx_packets);
133 p += sprintf(p, "num_rx_pkts = %lu\n", priv->stats.rx_packets);
134 p += sprintf(p, "num_tx_pkts_dropped = %lu\n", priv->stats.tx_dropped);
135 p += sprintf(p, "num_rx_pkts_dropped = %lu\n", priv->stats.rx_dropped);
136 p += sprintf(p, "num_tx_pkts_err = %lu\n", priv->stats.tx_errors);
137 p += sprintf(p, "num_rx_pkts_err = %lu\n", priv->stats.rx_errors);
138 p += sprintf(p, "carrier %s\n", ((netif_carrier_ok(priv->netdev))
139 ? "on" : "off"));
140 p += sprintf(p, "tx queue");
141 for (i = 0; i < netdev->num_tx_queues; i++) {
142 txq = netdev_get_tx_queue(netdev, i);
143 p += sprintf(p, " %d:%s", i, netif_tx_queue_stopped(txq) ?
144 "stopped" : "started");
145 }
146 p += sprintf(p, "\n");
147
148 ret = simple_read_from_buffer(ubuf, count, ppos, (char *) page,
149 (unsigned long) p - page);
150
151 free_and_exit:
152 free_page(page);
153 return ret;
154 }
155
156 /*
157 * Proc getlog file read handler.
158 *
159 * This function is called when the 'getlog' file is opened for reading
160 * It prints the following log information -
161 * - Number of multicast Tx frames
162 * - Number of failed packets
163 * - Number of Tx retries
164 * - Number of multicast Tx retries
165 * - Number of duplicate frames
166 * - Number of RTS successes
167 * - Number of RTS failures
168 * - Number of ACK failures
169 * - Number of fragmented Rx frames
170 * - Number of multicast Rx frames
171 * - Number of FCS errors
172 * - Number of Tx frames
173 * - WEP ICV error counts
174 * - Number of received beacons
175 * - Number of missed beacons
176 */
177 static ssize_t
mwifiex_getlog_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)178 mwifiex_getlog_read(struct file *file, char __user *ubuf,
179 size_t count, loff_t *ppos)
180 {
181 struct mwifiex_private *priv =
182 (struct mwifiex_private *) file->private_data;
183 unsigned long page = get_zeroed_page(GFP_KERNEL);
184 char *p = (char *) page;
185 ssize_t ret;
186 struct mwifiex_ds_get_stats stats;
187
188 if (!p)
189 return -ENOMEM;
190
191 memset(&stats, 0, sizeof(stats));
192 ret = mwifiex_get_stats_info(priv, &stats);
193 if (ret)
194 goto free_and_exit;
195
196 p += sprintf(p, "\n"
197 "mcasttxframe %u\n"
198 "failed %u\n"
199 "retry %u\n"
200 "multiretry %u\n"
201 "framedup %u\n"
202 "rtssuccess %u\n"
203 "rtsfailure %u\n"
204 "ackfailure %u\n"
205 "rxfrag %u\n"
206 "mcastrxframe %u\n"
207 "fcserror %u\n"
208 "txframe %u\n"
209 "wepicverrcnt-1 %u\n"
210 "wepicverrcnt-2 %u\n"
211 "wepicverrcnt-3 %u\n"
212 "wepicverrcnt-4 %u\n"
213 "bcn_rcv_cnt %u\n"
214 "bcn_miss_cnt %u\n",
215 stats.mcast_tx_frame,
216 stats.failed,
217 stats.retry,
218 stats.multi_retry,
219 stats.frame_dup,
220 stats.rts_success,
221 stats.rts_failure,
222 stats.ack_failure,
223 stats.rx_frag,
224 stats.mcast_rx_frame,
225 stats.fcs_error,
226 stats.tx_frame,
227 stats.wep_icv_error[0],
228 stats.wep_icv_error[1],
229 stats.wep_icv_error[2],
230 stats.wep_icv_error[3],
231 stats.bcn_rcv_cnt,
232 stats.bcn_miss_cnt);
233
234
235 ret = simple_read_from_buffer(ubuf, count, ppos, (char *) page,
236 (unsigned long) p - page);
237
238 free_and_exit:
239 free_page(page);
240 return ret;
241 }
242
243 /* Sysfs histogram file read handler.
244 *
245 * This function is called when the 'histogram' file is opened for reading
246 * It prints the following histogram information -
247 * - Number of histogram samples
248 * - Receive packet number of each rx_rate
249 * - Receive packet number of each snr
250 * - Receive packet number of each nosie_flr
251 * - Receive packet number of each signal streath
252 */
253 static ssize_t
mwifiex_histogram_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)254 mwifiex_histogram_read(struct file *file, char __user *ubuf,
255 size_t count, loff_t *ppos)
256 {
257 struct mwifiex_private *priv =
258 (struct mwifiex_private *)file->private_data;
259 ssize_t ret;
260 struct mwifiex_histogram_data *phist_data;
261 int i, value;
262 unsigned long page = get_zeroed_page(GFP_KERNEL);
263 char *p = (char *)page;
264
265 if (!p)
266 return -ENOMEM;
267
268 if (!priv || !priv->hist_data)
269 return -EFAULT;
270 phist_data = priv->hist_data;
271
272 p += sprintf(p, "\n"
273 "total samples = %d\n",
274 atomic_read(&phist_data->num_samples));
275
276 p += sprintf(p,
277 "rx rates (in Mbps): 0=1M 1=2M 2=5.5M 3=11M 4=6M 5=9M 6=12M\n"
278 "7=18M 8=24M 9=36M 10=48M 11=54M 12-27=MCS0-15(BW20) 28-43=MCS0-15(BW40)\n");
279
280 if (ISSUPP_11ACENABLED(priv->adapter->fw_cap_info)) {
281 p += sprintf(p,
282 "44-53=MCS0-9(VHT:BW20) 54-63=MCS0-9(VHT:BW40) 64-73=MCS0-9(VHT:BW80)\n\n");
283 } else {
284 p += sprintf(p, "\n");
285 }
286
287 for (i = 0; i < MWIFIEX_MAX_RX_RATES; i++) {
288 value = atomic_read(&phist_data->rx_rate[i]);
289 if (value)
290 p += sprintf(p, "rx_rate[%02d] = %d\n", i, value);
291 }
292
293 if (ISSUPP_11ACENABLED(priv->adapter->fw_cap_info)) {
294 for (i = MWIFIEX_MAX_RX_RATES; i < MWIFIEX_MAX_AC_RX_RATES;
295 i++) {
296 value = atomic_read(&phist_data->rx_rate[i]);
297 if (value)
298 p += sprintf(p, "rx_rate[%02d] = %d\n",
299 i, value);
300 }
301 }
302
303 for (i = 0; i < MWIFIEX_MAX_SNR; i++) {
304 value = atomic_read(&phist_data->snr[i]);
305 if (value)
306 p += sprintf(p, "snr[%02ddB] = %d\n", i, value);
307 }
308 for (i = 0; i < MWIFIEX_MAX_NOISE_FLR; i++) {
309 value = atomic_read(&phist_data->noise_flr[i]);
310 if (value)
311 p += sprintf(p, "noise_flr[%02ddBm] = %d\n",
312 (int)(i-128), value);
313 }
314 for (i = 0; i < MWIFIEX_MAX_SIG_STRENGTH; i++) {
315 value = atomic_read(&phist_data->sig_str[i]);
316 if (value)
317 p += sprintf(p, "sig_strength[-%02ddBm] = %d\n",
318 i, value);
319 }
320
321 ret = simple_read_from_buffer(ubuf, count, ppos, (char *)page,
322 (unsigned long)p - page);
323
324 return ret;
325 }
326
327 static ssize_t
mwifiex_histogram_write(struct file * file,const char __user * ubuf,size_t count,loff_t * ppos)328 mwifiex_histogram_write(struct file *file, const char __user *ubuf,
329 size_t count, loff_t *ppos)
330 {
331 struct mwifiex_private *priv = (void *)file->private_data;
332
333 if (priv && priv->hist_data)
334 mwifiex_hist_data_reset(priv);
335 return 0;
336 }
337
338 static struct mwifiex_debug_info info;
339
340 /*
341 * Proc debug file read handler.
342 *
343 * This function is called when the 'debug' file is opened for reading
344 * It prints the following log information -
345 * - Interrupt count
346 * - WMM AC VO packets count
347 * - WMM AC VI packets count
348 * - WMM AC BE packets count
349 * - WMM AC BK packets count
350 * - Maximum Tx buffer size
351 * - Tx buffer size
352 * - Current Tx buffer size
353 * - Power Save mode
354 * - Power Save state
355 * - Deep Sleep status
356 * - Device wakeup required status
357 * - Number of wakeup tries
358 * - Host Sleep configured status
359 * - Host Sleep activated status
360 * - Number of Tx timeouts
361 * - Number of command timeouts
362 * - Last timed out command ID
363 * - Last timed out command action
364 * - Last command ID
365 * - Last command action
366 * - Last command index
367 * - Last command response ID
368 * - Last command response index
369 * - Last event
370 * - Last event index
371 * - Number of host to card command failures
372 * - Number of sleep confirm command failures
373 * - Number of host to card data failure
374 * - Number of deauthentication events
375 * - Number of disassociation events
376 * - Number of link lost events
377 * - Number of deauthentication commands
378 * - Number of association success commands
379 * - Number of association failure commands
380 * - Number of commands sent
381 * - Number of data packets sent
382 * - Number of command responses received
383 * - Number of events received
384 * - Tx BA stream table (TID, RA)
385 * - Rx reorder table (TID, TA, Start window, Window size, Buffer)
386 */
387 static ssize_t
mwifiex_debug_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)388 mwifiex_debug_read(struct file *file, char __user *ubuf,
389 size_t count, loff_t *ppos)
390 {
391 struct mwifiex_private *priv =
392 (struct mwifiex_private *) file->private_data;
393 unsigned long page = get_zeroed_page(GFP_KERNEL);
394 char *p = (char *) page;
395 ssize_t ret;
396
397 if (!p)
398 return -ENOMEM;
399
400 ret = mwifiex_get_debug_info(priv, &info);
401 if (ret)
402 goto free_and_exit;
403
404 p += mwifiex_debug_info_to_buffer(priv, p, &info);
405
406 ret = simple_read_from_buffer(ubuf, count, ppos, (char *) page,
407 (unsigned long) p - page);
408
409 free_and_exit:
410 free_page(page);
411 return ret;
412 }
413
414 static u32 saved_reg_type, saved_reg_offset, saved_reg_value;
415
416 /*
417 * Proc regrdwr file write handler.
418 *
419 * This function is called when the 'regrdwr' file is opened for writing
420 *
421 * This function can be used to write to a register.
422 */
423 static ssize_t
mwifiex_regrdwr_write(struct file * file,const char __user * ubuf,size_t count,loff_t * ppos)424 mwifiex_regrdwr_write(struct file *file,
425 const char __user *ubuf, size_t count, loff_t *ppos)
426 {
427 char *buf;
428 int ret;
429 u32 reg_type = 0, reg_offset = 0, reg_value = UINT_MAX;
430
431 buf = memdup_user_nul(ubuf, min(count, (size_t)(PAGE_SIZE - 1)));
432 if (IS_ERR(buf))
433 return PTR_ERR(buf);
434
435 sscanf(buf, "%u %x %x", ®_type, ®_offset, ®_value);
436
437 if (reg_type == 0 || reg_offset == 0) {
438 ret = -EINVAL;
439 goto done;
440 } else {
441 saved_reg_type = reg_type;
442 saved_reg_offset = reg_offset;
443 saved_reg_value = reg_value;
444 ret = count;
445 }
446 done:
447 kfree(buf);
448 return ret;
449 }
450
451 /*
452 * Proc regrdwr file read handler.
453 *
454 * This function is called when the 'regrdwr' file is opened for reading
455 *
456 * This function can be used to read from a register.
457 */
458 static ssize_t
mwifiex_regrdwr_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)459 mwifiex_regrdwr_read(struct file *file, char __user *ubuf,
460 size_t count, loff_t *ppos)
461 {
462 struct mwifiex_private *priv =
463 (struct mwifiex_private *) file->private_data;
464 unsigned long addr = get_zeroed_page(GFP_KERNEL);
465 char *buf = (char *) addr;
466 int pos = 0, ret = 0;
467 u32 reg_value;
468
469 if (!buf)
470 return -ENOMEM;
471
472 if (!saved_reg_type) {
473 /* No command has been given */
474 pos += snprintf(buf, PAGE_SIZE, "0");
475 goto done;
476 }
477 /* Set command has been given */
478 if (saved_reg_value != UINT_MAX) {
479 ret = mwifiex_reg_write(priv, saved_reg_type, saved_reg_offset,
480 saved_reg_value);
481
482 pos += snprintf(buf, PAGE_SIZE, "%u 0x%x 0x%x\n",
483 saved_reg_type, saved_reg_offset,
484 saved_reg_value);
485
486 ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos);
487
488 goto done;
489 }
490 /* Get command has been given */
491 ret = mwifiex_reg_read(priv, saved_reg_type,
492 saved_reg_offset, ®_value);
493 if (ret) {
494 ret = -EINVAL;
495 goto done;
496 }
497
498 pos += snprintf(buf, PAGE_SIZE, "%u 0x%x 0x%x\n", saved_reg_type,
499 saved_reg_offset, reg_value);
500
501 ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos);
502
503 done:
504 free_page(addr);
505 return ret;
506 }
507
508 /* Proc debug_mask file read handler.
509 * This function is called when the 'debug_mask' file is opened for reading
510 * This function can be used read driver debugging mask value.
511 */
512 static ssize_t
mwifiex_debug_mask_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)513 mwifiex_debug_mask_read(struct file *file, char __user *ubuf,
514 size_t count, loff_t *ppos)
515 {
516 struct mwifiex_private *priv =
517 (struct mwifiex_private *)file->private_data;
518 unsigned long page = get_zeroed_page(GFP_KERNEL);
519 char *buf = (char *)page;
520 size_t ret = 0;
521 int pos = 0;
522
523 if (!buf)
524 return -ENOMEM;
525
526 pos += snprintf(buf, PAGE_SIZE, "debug mask=0x%08x\n",
527 priv->adapter->debug_mask);
528 ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos);
529
530 free_page(page);
531 return ret;
532 }
533
534 /* Proc debug_mask file read handler.
535 * This function is called when the 'debug_mask' file is opened for reading
536 * This function can be used read driver debugging mask value.
537 */
538 static ssize_t
mwifiex_debug_mask_write(struct file * file,const char __user * ubuf,size_t count,loff_t * ppos)539 mwifiex_debug_mask_write(struct file *file, const char __user *ubuf,
540 size_t count, loff_t *ppos)
541 {
542 int ret;
543 unsigned long debug_mask;
544 struct mwifiex_private *priv = (void *)file->private_data;
545 char *buf;
546
547 buf = memdup_user_nul(ubuf, min(count, (size_t)(PAGE_SIZE - 1)));
548 if (IS_ERR(buf))
549 return PTR_ERR(buf);
550
551 if (kstrtoul(buf, 0, &debug_mask)) {
552 ret = -EINVAL;
553 goto done;
554 }
555
556 priv->adapter->debug_mask = debug_mask;
557 ret = count;
558 done:
559 kfree(buf);
560 return ret;
561 }
562
563 /* debugfs verext file write handler.
564 * This function is called when the 'verext' file is opened for write
565 */
566 static ssize_t
mwifiex_verext_write(struct file * file,const char __user * ubuf,size_t count,loff_t * ppos)567 mwifiex_verext_write(struct file *file, const char __user *ubuf,
568 size_t count, loff_t *ppos)
569 {
570 int ret;
571 u32 versionstrsel;
572 struct mwifiex_private *priv = (void *)file->private_data;
573 char buf[16];
574
575 memset(buf, 0, sizeof(buf));
576
577 if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
578 return -EFAULT;
579
580 ret = kstrtou32(buf, 10, &versionstrsel);
581 if (ret)
582 return ret;
583
584 priv->versionstrsel = versionstrsel;
585
586 return count;
587 }
588
589 /* Proc verext file read handler.
590 * This function is called when the 'verext' file is opened for reading
591 * This function can be used read driver exteneed verion string.
592 */
593 static ssize_t
mwifiex_verext_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)594 mwifiex_verext_read(struct file *file, char __user *ubuf,
595 size_t count, loff_t *ppos)
596 {
597 struct mwifiex_private *priv =
598 (struct mwifiex_private *)file->private_data;
599 char buf[256];
600 int ret;
601
602 mwifiex_get_ver_ext(priv, priv->versionstrsel);
603 ret = snprintf(buf, sizeof(buf), "version string: %s\n",
604 priv->version_str);
605
606 return simple_read_from_buffer(ubuf, count, ppos, buf, ret);
607 }
608
609 /* Proc memrw file write handler.
610 * This function is called when the 'memrw' file is opened for writing
611 * This function can be used to write to a memory location.
612 */
613 static ssize_t
mwifiex_memrw_write(struct file * file,const char __user * ubuf,size_t count,loff_t * ppos)614 mwifiex_memrw_write(struct file *file, const char __user *ubuf, size_t count,
615 loff_t *ppos)
616 {
617 int ret;
618 char cmd;
619 struct mwifiex_ds_mem_rw mem_rw;
620 u16 cmd_action;
621 struct mwifiex_private *priv = (void *)file->private_data;
622 char *buf;
623
624 buf = memdup_user_nul(ubuf, min(count, (size_t)(PAGE_SIZE - 1)));
625 if (IS_ERR(buf))
626 return PTR_ERR(buf);
627
628 ret = sscanf(buf, "%c %x %x", &cmd, &mem_rw.addr, &mem_rw.value);
629 if (ret != 3) {
630 ret = -EINVAL;
631 goto done;
632 }
633
634 if ((cmd == 'r') || (cmd == 'R')) {
635 cmd_action = HostCmd_ACT_GEN_GET;
636 mem_rw.value = 0;
637 } else if ((cmd == 'w') || (cmd == 'W')) {
638 cmd_action = HostCmd_ACT_GEN_SET;
639 } else {
640 ret = -EINVAL;
641 goto done;
642 }
643
644 memcpy(&priv->mem_rw, &mem_rw, sizeof(mem_rw));
645 if (mwifiex_send_cmd(priv, HostCmd_CMD_MEM_ACCESS, cmd_action, 0,
646 &mem_rw, true))
647 ret = -1;
648 else
649 ret = count;
650
651 done:
652 kfree(buf);
653 return ret;
654 }
655
656 /* Proc memrw file read handler.
657 * This function is called when the 'memrw' file is opened for reading
658 * This function can be used to read from a memory location.
659 */
660 static ssize_t
mwifiex_memrw_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)661 mwifiex_memrw_read(struct file *file, char __user *ubuf,
662 size_t count, loff_t *ppos)
663 {
664 struct mwifiex_private *priv = (void *)file->private_data;
665 unsigned long addr = get_zeroed_page(GFP_KERNEL);
666 char *buf = (char *)addr;
667 int ret, pos = 0;
668
669 if (!buf)
670 return -ENOMEM;
671
672 pos += snprintf(buf, PAGE_SIZE, "0x%x 0x%x\n", priv->mem_rw.addr,
673 priv->mem_rw.value);
674 ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos);
675
676 free_page(addr);
677 return ret;
678 }
679
680 static u32 saved_offset = -1, saved_bytes = -1;
681
682 /*
683 * Proc rdeeprom file write handler.
684 *
685 * This function is called when the 'rdeeprom' file is opened for writing
686 *
687 * This function can be used to write to a RDEEPROM location.
688 */
689 static ssize_t
mwifiex_rdeeprom_write(struct file * file,const char __user * ubuf,size_t count,loff_t * ppos)690 mwifiex_rdeeprom_write(struct file *file,
691 const char __user *ubuf, size_t count, loff_t *ppos)
692 {
693 char *buf;
694 int ret = 0;
695 int offset = -1, bytes = -1;
696
697 buf = memdup_user_nul(ubuf, min(count, (size_t)(PAGE_SIZE - 1)));
698 if (IS_ERR(buf))
699 return PTR_ERR(buf);
700
701 sscanf(buf, "%d %d", &offset, &bytes);
702
703 if (offset == -1 || bytes == -1) {
704 ret = -EINVAL;
705 goto done;
706 } else {
707 saved_offset = offset;
708 saved_bytes = bytes;
709 ret = count;
710 }
711 done:
712 kfree(buf);
713 return ret;
714 }
715
716 /*
717 * Proc rdeeprom read write handler.
718 *
719 * This function is called when the 'rdeeprom' file is opened for reading
720 *
721 * This function can be used to read from a RDEEPROM location.
722 */
723 static ssize_t
mwifiex_rdeeprom_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)724 mwifiex_rdeeprom_read(struct file *file, char __user *ubuf,
725 size_t count, loff_t *ppos)
726 {
727 struct mwifiex_private *priv =
728 (struct mwifiex_private *) file->private_data;
729 unsigned long addr = get_zeroed_page(GFP_KERNEL);
730 char *buf = (char *) addr;
731 int pos, ret, i;
732 u8 value[MAX_EEPROM_DATA];
733
734 if (!buf)
735 return -ENOMEM;
736
737 if (saved_offset == -1) {
738 /* No command has been given */
739 pos = snprintf(buf, PAGE_SIZE, "0");
740 goto done;
741 }
742
743 /* Get command has been given */
744 ret = mwifiex_eeprom_read(priv, (u16) saved_offset,
745 (u16) saved_bytes, value);
746 if (ret) {
747 ret = -EINVAL;
748 goto out_free;
749 }
750
751 pos = snprintf(buf, PAGE_SIZE, "%d %d ", saved_offset, saved_bytes);
752
753 for (i = 0; i < saved_bytes; i++)
754 pos += scnprintf(buf + pos, PAGE_SIZE - pos, "%d ", value[i]);
755
756 done:
757 ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos);
758 out_free:
759 free_page(addr);
760 return ret;
761 }
762
763 /* Proc hscfg file write handler
764 * This function can be used to configure the host sleep parameters.
765 */
766 static ssize_t
mwifiex_hscfg_write(struct file * file,const char __user * ubuf,size_t count,loff_t * ppos)767 mwifiex_hscfg_write(struct file *file, const char __user *ubuf,
768 size_t count, loff_t *ppos)
769 {
770 struct mwifiex_private *priv = (void *)file->private_data;
771 char *buf;
772 int ret, arg_num;
773 struct mwifiex_ds_hs_cfg hscfg;
774 int conditions = HS_CFG_COND_DEF;
775 u32 gpio = HS_CFG_GPIO_DEF, gap = HS_CFG_GAP_DEF;
776
777 buf = memdup_user_nul(ubuf, min(count, (size_t)(PAGE_SIZE - 1)));
778 if (IS_ERR(buf))
779 return PTR_ERR(buf);
780
781 arg_num = sscanf(buf, "%d %x %x", &conditions, &gpio, &gap);
782
783 memset(&hscfg, 0, sizeof(struct mwifiex_ds_hs_cfg));
784
785 if (arg_num > 3) {
786 mwifiex_dbg(priv->adapter, ERROR,
787 "Too many arguments\n");
788 ret = -EINVAL;
789 goto done;
790 }
791
792 if (arg_num >= 1 && arg_num < 3)
793 mwifiex_set_hs_params(priv, HostCmd_ACT_GEN_GET,
794 MWIFIEX_SYNC_CMD, &hscfg);
795
796 if (arg_num) {
797 if (conditions == HS_CFG_CANCEL) {
798 mwifiex_cancel_hs(priv, MWIFIEX_ASYNC_CMD);
799 ret = count;
800 goto done;
801 }
802 hscfg.conditions = conditions;
803 }
804 if (arg_num >= 2)
805 hscfg.gpio = gpio;
806 if (arg_num == 3)
807 hscfg.gap = gap;
808
809 hscfg.is_invoke_hostcmd = false;
810 mwifiex_set_hs_params(priv, HostCmd_ACT_GEN_SET,
811 MWIFIEX_SYNC_CMD, &hscfg);
812
813 mwifiex_enable_hs(priv->adapter);
814 clear_bit(MWIFIEX_IS_HS_ENABLING, &priv->adapter->work_flags);
815 ret = count;
816 done:
817 kfree(buf);
818 return ret;
819 }
820
821 /* Proc hscfg file read handler
822 * This function can be used to read host sleep configuration
823 * parameters from driver.
824 */
825 static ssize_t
mwifiex_hscfg_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)826 mwifiex_hscfg_read(struct file *file, char __user *ubuf,
827 size_t count, loff_t *ppos)
828 {
829 struct mwifiex_private *priv = (void *)file->private_data;
830 unsigned long addr = get_zeroed_page(GFP_KERNEL);
831 char *buf = (char *)addr;
832 int pos, ret;
833 struct mwifiex_ds_hs_cfg hscfg;
834
835 if (!buf)
836 return -ENOMEM;
837
838 mwifiex_set_hs_params(priv, HostCmd_ACT_GEN_GET,
839 MWIFIEX_SYNC_CMD, &hscfg);
840
841 pos = snprintf(buf, PAGE_SIZE, "%u 0x%x 0x%x\n", hscfg.conditions,
842 hscfg.gpio, hscfg.gap);
843
844 ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos);
845
846 free_page(addr);
847 return ret;
848 }
849
850 static ssize_t
mwifiex_timeshare_coex_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)851 mwifiex_timeshare_coex_read(struct file *file, char __user *ubuf,
852 size_t count, loff_t *ppos)
853 {
854 struct mwifiex_private *priv = file->private_data;
855 char buf[3];
856 bool timeshare_coex;
857 int ret;
858 unsigned int len;
859
860 if (priv->adapter->fw_api_ver != MWIFIEX_FW_V15)
861 return -EOPNOTSUPP;
862
863 ret = mwifiex_send_cmd(priv, HostCmd_CMD_ROBUST_COEX,
864 HostCmd_ACT_GEN_GET, 0, ×hare_coex, true);
865 if (ret)
866 return ret;
867
868 len = sprintf(buf, "%d\n", timeshare_coex);
869 return simple_read_from_buffer(ubuf, count, ppos, buf, len);
870 }
871
872 static ssize_t
mwifiex_timeshare_coex_write(struct file * file,const char __user * ubuf,size_t count,loff_t * ppos)873 mwifiex_timeshare_coex_write(struct file *file, const char __user *ubuf,
874 size_t count, loff_t *ppos)
875 {
876 bool timeshare_coex;
877 struct mwifiex_private *priv = file->private_data;
878 char kbuf[16];
879 int ret;
880
881 if (priv->adapter->fw_api_ver != MWIFIEX_FW_V15)
882 return -EOPNOTSUPP;
883
884 memset(kbuf, 0, sizeof(kbuf));
885
886 if (copy_from_user(&kbuf, ubuf, min_t(size_t, sizeof(kbuf) - 1, count)))
887 return -EFAULT;
888
889 if (strtobool(kbuf, ×hare_coex))
890 return -EINVAL;
891
892 ret = mwifiex_send_cmd(priv, HostCmd_CMD_ROBUST_COEX,
893 HostCmd_ACT_GEN_SET, 0, ×hare_coex, true);
894 if (ret)
895 return ret;
896 else
897 return count;
898 }
899
900 static ssize_t
mwifiex_reset_write(struct file * file,const char __user * ubuf,size_t count,loff_t * ppos)901 mwifiex_reset_write(struct file *file,
902 const char __user *ubuf, size_t count, loff_t *ppos)
903 {
904 struct mwifiex_private *priv = file->private_data;
905 struct mwifiex_adapter *adapter = priv->adapter;
906 bool result;
907 int rc;
908
909 rc = kstrtobool_from_user(ubuf, count, &result);
910 if (rc)
911 return rc;
912
913 if (!result)
914 return -EINVAL;
915
916 if (adapter->if_ops.card_reset) {
917 dev_info(adapter->dev, "Resetting per request\n");
918 adapter->if_ops.card_reset(adapter);
919 }
920
921 return count;
922 }
923
924 #define MWIFIEX_DFS_ADD_FILE(name) do { \
925 debugfs_create_file(#name, 0644, priv->dfs_dev_dir, priv, \
926 &mwifiex_dfs_##name##_fops); \
927 } while (0);
928
929 #define MWIFIEX_DFS_FILE_OPS(name) \
930 static const struct file_operations mwifiex_dfs_##name##_fops = { \
931 .read = mwifiex_##name##_read, \
932 .write = mwifiex_##name##_write, \
933 .open = simple_open, \
934 };
935
936 #define MWIFIEX_DFS_FILE_READ_OPS(name) \
937 static const struct file_operations mwifiex_dfs_##name##_fops = { \
938 .read = mwifiex_##name##_read, \
939 .open = simple_open, \
940 };
941
942 #define MWIFIEX_DFS_FILE_WRITE_OPS(name) \
943 static const struct file_operations mwifiex_dfs_##name##_fops = { \
944 .write = mwifiex_##name##_write, \
945 .open = simple_open, \
946 };
947
948
949 MWIFIEX_DFS_FILE_READ_OPS(info);
950 MWIFIEX_DFS_FILE_READ_OPS(debug);
951 MWIFIEX_DFS_FILE_READ_OPS(getlog);
952 MWIFIEX_DFS_FILE_OPS(regrdwr);
953 MWIFIEX_DFS_FILE_OPS(rdeeprom);
954 MWIFIEX_DFS_FILE_OPS(memrw);
955 MWIFIEX_DFS_FILE_OPS(hscfg);
956 MWIFIEX_DFS_FILE_OPS(histogram);
957 MWIFIEX_DFS_FILE_OPS(debug_mask);
958 MWIFIEX_DFS_FILE_OPS(timeshare_coex);
959 MWIFIEX_DFS_FILE_WRITE_OPS(reset);
960 MWIFIEX_DFS_FILE_OPS(verext);
961
962 /*
963 * This function creates the debug FS directory structure and the files.
964 */
965 void
mwifiex_dev_debugfs_init(struct mwifiex_private * priv)966 mwifiex_dev_debugfs_init(struct mwifiex_private *priv)
967 {
968 if (!mwifiex_dfs_dir || !priv)
969 return;
970
971 priv->dfs_dev_dir = debugfs_create_dir(priv->netdev->name,
972 mwifiex_dfs_dir);
973
974 if (!priv->dfs_dev_dir)
975 return;
976
977 MWIFIEX_DFS_ADD_FILE(info);
978 MWIFIEX_DFS_ADD_FILE(debug);
979 MWIFIEX_DFS_ADD_FILE(getlog);
980 MWIFIEX_DFS_ADD_FILE(regrdwr);
981 MWIFIEX_DFS_ADD_FILE(rdeeprom);
982
983 MWIFIEX_DFS_ADD_FILE(memrw);
984 MWIFIEX_DFS_ADD_FILE(hscfg);
985 MWIFIEX_DFS_ADD_FILE(histogram);
986 MWIFIEX_DFS_ADD_FILE(debug_mask);
987 MWIFIEX_DFS_ADD_FILE(timeshare_coex);
988 MWIFIEX_DFS_ADD_FILE(reset);
989 MWIFIEX_DFS_ADD_FILE(verext);
990 }
991
992 /*
993 * This function removes the debug FS directory structure and the files.
994 */
995 void
mwifiex_dev_debugfs_remove(struct mwifiex_private * priv)996 mwifiex_dev_debugfs_remove(struct mwifiex_private *priv)
997 {
998 if (!priv)
999 return;
1000
1001 debugfs_remove_recursive(priv->dfs_dev_dir);
1002 }
1003
1004 /*
1005 * This function creates the top level proc directory.
1006 */
1007 void
mwifiex_debugfs_init(void)1008 mwifiex_debugfs_init(void)
1009 {
1010 if (!mwifiex_dfs_dir)
1011 mwifiex_dfs_dir = debugfs_create_dir("mwifiex", NULL);
1012 }
1013
1014 /*
1015 * This function removes the top level proc directory.
1016 */
1017 void
mwifiex_debugfs_remove(void)1018 mwifiex_debugfs_remove(void)
1019 {
1020 debugfs_remove(mwifiex_dfs_dir);
1021 }
1022
