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, "rx rates (in Mbps): 0=1M 1=2M");
277 p += sprintf(p, "2=5.5M 3=11M 4=6M 5=9M 6=12M\n");
278 p += sprintf(p, "7=18M 8=24M 9=36M 10=48M 11=54M");
279 p += sprintf(p, "12-27=MCS0-15(BW20) 28-43=MCS0-15(BW40)\n");
280
281 if (ISSUPP_11ACENABLED(priv->adapter->fw_cap_info)) {
282 p += sprintf(p, "44-53=MCS0-9(VHT:BW20)");
283 p += sprintf(p, "54-63=MCS0-9(VHT:BW40)");
284 p += sprintf(p, "64-73=MCS0-9(VHT:BW80)\n\n");
285 } else {
286 p += sprintf(p, "\n");
287 }
288
289 for (i = 0; i < MWIFIEX_MAX_RX_RATES; i++) {
290 value = atomic_read(&phist_data->rx_rate[i]);
291 if (value)
292 p += sprintf(p, "rx_rate[%02d] = %d\n", i, value);
293 }
294
295 if (ISSUPP_11ACENABLED(priv->adapter->fw_cap_info)) {
296 for (i = MWIFIEX_MAX_RX_RATES; i < MWIFIEX_MAX_AC_RX_RATES;
297 i++) {
298 value = atomic_read(&phist_data->rx_rate[i]);
299 if (value)
300 p += sprintf(p, "rx_rate[%02d] = %d\n",
301 i, value);
302 }
303 }
304
305 for (i = 0; i < MWIFIEX_MAX_SNR; i++) {
306 value = atomic_read(&phist_data->snr[i]);
307 if (value)
308 p += sprintf(p, "snr[%02ddB] = %d\n", i, value);
309 }
310 for (i = 0; i < MWIFIEX_MAX_NOISE_FLR; i++) {
311 value = atomic_read(&phist_data->noise_flr[i]);
312 if (value)
313 p += sprintf(p, "noise_flr[-%02ddBm] = %d\n",
314 (int)(i-128), value);
315 }
316 for (i = 0; i < MWIFIEX_MAX_SIG_STRENGTH; i++) {
317 value = atomic_read(&phist_data->sig_str[i]);
318 if (value)
319 p += sprintf(p, "sig_strength[-%02ddBm] = %d\n",
320 i, value);
321 }
322
323 ret = simple_read_from_buffer(ubuf, count, ppos, (char *)page,
324 (unsigned long)p - page);
325
326 return ret;
327 }
328
329 static ssize_t
mwifiex_histogram_write(struct file * file,const char __user * ubuf,size_t count,loff_t * ppos)330 mwifiex_histogram_write(struct file *file, const char __user *ubuf,
331 size_t count, loff_t *ppos)
332 {
333 struct mwifiex_private *priv = (void *)file->private_data;
334
335 if (priv && priv->hist_data)
336 mwifiex_hist_data_reset(priv);
337 return 0;
338 }
339
340 static struct mwifiex_debug_info info;
341
342 /*
343 * Proc debug file read handler.
344 *
345 * This function is called when the 'debug' file is opened for reading
346 * It prints the following log information -
347 * - Interrupt count
348 * - WMM AC VO packets count
349 * - WMM AC VI packets count
350 * - WMM AC BE packets count
351 * - WMM AC BK packets count
352 * - Maximum Tx buffer size
353 * - Tx buffer size
354 * - Current Tx buffer size
355 * - Power Save mode
356 * - Power Save state
357 * - Deep Sleep status
358 * - Device wakeup required status
359 * - Number of wakeup tries
360 * - Host Sleep configured status
361 * - Host Sleep activated status
362 * - Number of Tx timeouts
363 * - Number of command timeouts
364 * - Last timed out command ID
365 * - Last timed out command action
366 * - Last command ID
367 * - Last command action
368 * - Last command index
369 * - Last command response ID
370 * - Last command response index
371 * - Last event
372 * - Last event index
373 * - Number of host to card command failures
374 * - Number of sleep confirm command failures
375 * - Number of host to card data failure
376 * - Number of deauthentication events
377 * - Number of disassociation events
378 * - Number of link lost events
379 * - Number of deauthentication commands
380 * - Number of association success commands
381 * - Number of association failure commands
382 * - Number of commands sent
383 * - Number of data packets sent
384 * - Number of command responses received
385 * - Number of events received
386 * - Tx BA stream table (TID, RA)
387 * - Rx reorder table (TID, TA, Start window, Window size, Buffer)
388 */
389 static ssize_t
mwifiex_debug_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)390 mwifiex_debug_read(struct file *file, char __user *ubuf,
391 size_t count, loff_t *ppos)
392 {
393 struct mwifiex_private *priv =
394 (struct mwifiex_private *) file->private_data;
395 unsigned long page = get_zeroed_page(GFP_KERNEL);
396 char *p = (char *) page;
397 ssize_t ret;
398
399 if (!p)
400 return -ENOMEM;
401
402 ret = mwifiex_get_debug_info(priv, &info);
403 if (ret)
404 goto free_and_exit;
405
406 p += mwifiex_debug_info_to_buffer(priv, p, &info);
407
408 ret = simple_read_from_buffer(ubuf, count, ppos, (char *) page,
409 (unsigned long) p - page);
410
411 free_and_exit:
412 free_page(page);
413 return ret;
414 }
415
416 static u32 saved_reg_type, saved_reg_offset, saved_reg_value;
417
418 /*
419 * Proc regrdwr file write handler.
420 *
421 * This function is called when the 'regrdwr' file is opened for writing
422 *
423 * This function can be used to write to a register.
424 */
425 static ssize_t
mwifiex_regrdwr_write(struct file * file,const char __user * ubuf,size_t count,loff_t * ppos)426 mwifiex_regrdwr_write(struct file *file,
427 const char __user *ubuf, size_t count, loff_t *ppos)
428 {
429 char *buf;
430 int ret;
431 u32 reg_type = 0, reg_offset = 0, reg_value = UINT_MAX;
432
433 buf = memdup_user_nul(ubuf, min(count, (size_t)(PAGE_SIZE - 1)));
434 if (IS_ERR(buf))
435 return PTR_ERR(buf);
436
437 sscanf(buf, "%u %x %x", ®_type, ®_offset, ®_value);
438
439 if (reg_type == 0 || reg_offset == 0) {
440 ret = -EINVAL;
441 goto done;
442 } else {
443 saved_reg_type = reg_type;
444 saved_reg_offset = reg_offset;
445 saved_reg_value = reg_value;
446 ret = count;
447 }
448 done:
449 kfree(buf);
450 return ret;
451 }
452
453 /*
454 * Proc regrdwr file read handler.
455 *
456 * This function is called when the 'regrdwr' file is opened for reading
457 *
458 * This function can be used to read from a register.
459 */
460 static ssize_t
mwifiex_regrdwr_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)461 mwifiex_regrdwr_read(struct file *file, char __user *ubuf,
462 size_t count, loff_t *ppos)
463 {
464 struct mwifiex_private *priv =
465 (struct mwifiex_private *) file->private_data;
466 unsigned long addr = get_zeroed_page(GFP_KERNEL);
467 char *buf = (char *) addr;
468 int pos = 0, ret = 0;
469 u32 reg_value;
470
471 if (!buf)
472 return -ENOMEM;
473
474 if (!saved_reg_type) {
475 /* No command has been given */
476 pos += snprintf(buf, PAGE_SIZE, "0");
477 goto done;
478 }
479 /* Set command has been given */
480 if (saved_reg_value != UINT_MAX) {
481 ret = mwifiex_reg_write(priv, saved_reg_type, saved_reg_offset,
482 saved_reg_value);
483
484 pos += snprintf(buf, PAGE_SIZE, "%u 0x%x 0x%x\n",
485 saved_reg_type, saved_reg_offset,
486 saved_reg_value);
487
488 ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos);
489
490 goto done;
491 }
492 /* Get command has been given */
493 ret = mwifiex_reg_read(priv, saved_reg_type,
494 saved_reg_offset, ®_value);
495 if (ret) {
496 ret = -EINVAL;
497 goto done;
498 }
499
500 pos += snprintf(buf, PAGE_SIZE, "%u 0x%x 0x%x\n", saved_reg_type,
501 saved_reg_offset, reg_value);
502
503 ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos);
504
505 done:
506 free_page(addr);
507 return ret;
508 }
509
510 /* Proc debug_mask file read handler.
511 * This function is called when the 'debug_mask' file is opened for reading
512 * This function can be used read driver debugging mask value.
513 */
514 static ssize_t
mwifiex_debug_mask_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)515 mwifiex_debug_mask_read(struct file *file, char __user *ubuf,
516 size_t count, loff_t *ppos)
517 {
518 struct mwifiex_private *priv =
519 (struct mwifiex_private *)file->private_data;
520 unsigned long page = get_zeroed_page(GFP_KERNEL);
521 char *buf = (char *)page;
522 size_t ret = 0;
523 int pos = 0;
524
525 if (!buf)
526 return -ENOMEM;
527
528 pos += snprintf(buf, PAGE_SIZE, "debug mask=0x%08x\n",
529 priv->adapter->debug_mask);
530 ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos);
531
532 free_page(page);
533 return ret;
534 }
535
536 /* Proc debug_mask file read handler.
537 * This function is called when the 'debug_mask' file is opened for reading
538 * This function can be used read driver debugging mask value.
539 */
540 static ssize_t
mwifiex_debug_mask_write(struct file * file,const char __user * ubuf,size_t count,loff_t * ppos)541 mwifiex_debug_mask_write(struct file *file, const char __user *ubuf,
542 size_t count, loff_t *ppos)
543 {
544 int ret;
545 unsigned long debug_mask;
546 struct mwifiex_private *priv = (void *)file->private_data;
547 char *buf;
548
549 buf = memdup_user_nul(ubuf, min(count, (size_t)(PAGE_SIZE - 1)));
550 if (IS_ERR(buf))
551 return PTR_ERR(buf);
552
553 if (kstrtoul(buf, 0, &debug_mask)) {
554 ret = -EINVAL;
555 goto done;
556 }
557
558 priv->adapter->debug_mask = debug_mask;
559 ret = count;
560 done:
561 kfree(buf);
562 return ret;
563 }
564
565 /* debugfs verext file write handler.
566 * This function is called when the 'verext' file is opened for write
567 */
568 static ssize_t
mwifiex_verext_write(struct file * file,const char __user * ubuf,size_t count,loff_t * ppos)569 mwifiex_verext_write(struct file *file, const char __user *ubuf,
570 size_t count, loff_t *ppos)
571 {
572 int ret;
573 u32 versionstrsel;
574 struct mwifiex_private *priv = (void *)file->private_data;
575 char buf[16];
576
577 memset(buf, 0, sizeof(buf));
578
579 if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
580 return -EFAULT;
581
582 ret = kstrtou32(buf, 10, &versionstrsel);
583 if (ret)
584 return ret;
585
586 priv->versionstrsel = versionstrsel;
587
588 return count;
589 }
590
591 /* Proc verext file read handler.
592 * This function is called when the 'verext' file is opened for reading
593 * This function can be used read driver exteneed verion string.
594 */
595 static ssize_t
mwifiex_verext_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)596 mwifiex_verext_read(struct file *file, char __user *ubuf,
597 size_t count, loff_t *ppos)
598 {
599 struct mwifiex_private *priv =
600 (struct mwifiex_private *)file->private_data;
601 char buf[256];
602 int ret;
603
604 mwifiex_get_ver_ext(priv, priv->versionstrsel);
605 ret = snprintf(buf, sizeof(buf), "version string: %s\n",
606 priv->version_str);
607
608 return simple_read_from_buffer(ubuf, count, ppos, buf, ret);
609 }
610
611 /* Proc memrw file write handler.
612 * This function is called when the 'memrw' file is opened for writing
613 * This function can be used to write to a memory location.
614 */
615 static ssize_t
mwifiex_memrw_write(struct file * file,const char __user * ubuf,size_t count,loff_t * ppos)616 mwifiex_memrw_write(struct file *file, const char __user *ubuf, size_t count,
617 loff_t *ppos)
618 {
619 int ret;
620 char cmd;
621 struct mwifiex_ds_mem_rw mem_rw;
622 u16 cmd_action;
623 struct mwifiex_private *priv = (void *)file->private_data;
624 char *buf;
625
626 buf = memdup_user_nul(ubuf, min(count, (size_t)(PAGE_SIZE - 1)));
627 if (IS_ERR(buf))
628 return PTR_ERR(buf);
629
630 ret = sscanf(buf, "%c %x %x", &cmd, &mem_rw.addr, &mem_rw.value);
631 if (ret != 3) {
632 ret = -EINVAL;
633 goto done;
634 }
635
636 if ((cmd == 'r') || (cmd == 'R')) {
637 cmd_action = HostCmd_ACT_GEN_GET;
638 mem_rw.value = 0;
639 } else if ((cmd == 'w') || (cmd == 'W')) {
640 cmd_action = HostCmd_ACT_GEN_SET;
641 } else {
642 ret = -EINVAL;
643 goto done;
644 }
645
646 memcpy(&priv->mem_rw, &mem_rw, sizeof(mem_rw));
647 if (mwifiex_send_cmd(priv, HostCmd_CMD_MEM_ACCESS, cmd_action, 0,
648 &mem_rw, true))
649 ret = -1;
650 else
651 ret = count;
652
653 done:
654 kfree(buf);
655 return ret;
656 }
657
658 /* Proc memrw file read handler.
659 * This function is called when the 'memrw' file is opened for reading
660 * This function can be used to read from a memory location.
661 */
662 static ssize_t
mwifiex_memrw_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)663 mwifiex_memrw_read(struct file *file, char __user *ubuf,
664 size_t count, loff_t *ppos)
665 {
666 struct mwifiex_private *priv = (void *)file->private_data;
667 unsigned long addr = get_zeroed_page(GFP_KERNEL);
668 char *buf = (char *)addr;
669 int ret, pos = 0;
670
671 if (!buf)
672 return -ENOMEM;
673
674 pos += snprintf(buf, PAGE_SIZE, "0x%x 0x%x\n", priv->mem_rw.addr,
675 priv->mem_rw.value);
676 ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos);
677
678 free_page(addr);
679 return ret;
680 }
681
682 static u32 saved_offset = -1, saved_bytes = -1;
683
684 /*
685 * Proc rdeeprom file write handler.
686 *
687 * This function is called when the 'rdeeprom' file is opened for writing
688 *
689 * This function can be used to write to a RDEEPROM location.
690 */
691 static ssize_t
mwifiex_rdeeprom_write(struct file * file,const char __user * ubuf,size_t count,loff_t * ppos)692 mwifiex_rdeeprom_write(struct file *file,
693 const char __user *ubuf, size_t count, loff_t *ppos)
694 {
695 char *buf;
696 int ret = 0;
697 int offset = -1, bytes = -1;
698
699 buf = memdup_user_nul(ubuf, min(count, (size_t)(PAGE_SIZE - 1)));
700 if (IS_ERR(buf))
701 return PTR_ERR(buf);
702
703 sscanf(buf, "%d %d", &offset, &bytes);
704
705 if (offset == -1 || bytes == -1) {
706 ret = -EINVAL;
707 goto done;
708 } else {
709 saved_offset = offset;
710 saved_bytes = bytes;
711 ret = count;
712 }
713 done:
714 kfree(buf);
715 return ret;
716 }
717
718 /*
719 * Proc rdeeprom read write handler.
720 *
721 * This function is called when the 'rdeeprom' file is opened for reading
722 *
723 * This function can be used to read from a RDEEPROM location.
724 */
725 static ssize_t
mwifiex_rdeeprom_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)726 mwifiex_rdeeprom_read(struct file *file, char __user *ubuf,
727 size_t count, loff_t *ppos)
728 {
729 struct mwifiex_private *priv =
730 (struct mwifiex_private *) file->private_data;
731 unsigned long addr = get_zeroed_page(GFP_KERNEL);
732 char *buf = (char *) addr;
733 int pos, ret, i;
734 u8 value[MAX_EEPROM_DATA];
735
736 if (!buf)
737 return -ENOMEM;
738
739 if (saved_offset == -1) {
740 /* No command has been given */
741 pos = snprintf(buf, PAGE_SIZE, "0");
742 goto done;
743 }
744
745 /* Get command has been given */
746 ret = mwifiex_eeprom_read(priv, (u16) saved_offset,
747 (u16) saved_bytes, value);
748 if (ret) {
749 ret = -EINVAL;
750 goto out_free;
751 }
752
753 pos = snprintf(buf, PAGE_SIZE, "%d %d ", saved_offset, saved_bytes);
754
755 for (i = 0; i < saved_bytes; i++)
756 pos += scnprintf(buf + pos, PAGE_SIZE - pos, "%d ", value[i]);
757
758 done:
759 ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos);
760 out_free:
761 free_page(addr);
762 return ret;
763 }
764
765 /* Proc hscfg file write handler
766 * This function can be used to configure the host sleep parameters.
767 */
768 static ssize_t
mwifiex_hscfg_write(struct file * file,const char __user * ubuf,size_t count,loff_t * ppos)769 mwifiex_hscfg_write(struct file *file, const char __user *ubuf,
770 size_t count, loff_t *ppos)
771 {
772 struct mwifiex_private *priv = (void *)file->private_data;
773 char *buf;
774 int ret, arg_num;
775 struct mwifiex_ds_hs_cfg hscfg;
776 int conditions = HS_CFG_COND_DEF;
777 u32 gpio = HS_CFG_GPIO_DEF, gap = HS_CFG_GAP_DEF;
778
779 buf = memdup_user_nul(ubuf, min(count, (size_t)(PAGE_SIZE - 1)));
780 if (IS_ERR(buf))
781 return PTR_ERR(buf);
782
783 arg_num = sscanf(buf, "%d %x %x", &conditions, &gpio, &gap);
784
785 memset(&hscfg, 0, sizeof(struct mwifiex_ds_hs_cfg));
786
787 if (arg_num > 3) {
788 mwifiex_dbg(priv->adapter, ERROR,
789 "Too many arguments\n");
790 ret = -EINVAL;
791 goto done;
792 }
793
794 if (arg_num >= 1 && arg_num < 3)
795 mwifiex_set_hs_params(priv, HostCmd_ACT_GEN_GET,
796 MWIFIEX_SYNC_CMD, &hscfg);
797
798 if (arg_num) {
799 if (conditions == HS_CFG_CANCEL) {
800 mwifiex_cancel_hs(priv, MWIFIEX_ASYNC_CMD);
801 ret = count;
802 goto done;
803 }
804 hscfg.conditions = conditions;
805 }
806 if (arg_num >= 2)
807 hscfg.gpio = gpio;
808 if (arg_num == 3)
809 hscfg.gap = gap;
810
811 hscfg.is_invoke_hostcmd = false;
812 mwifiex_set_hs_params(priv, HostCmd_ACT_GEN_SET,
813 MWIFIEX_SYNC_CMD, &hscfg);
814
815 mwifiex_enable_hs(priv->adapter);
816 clear_bit(MWIFIEX_IS_HS_ENABLING, &priv->adapter->work_flags);
817 ret = count;
818 done:
819 kfree(buf);
820 return ret;
821 }
822
823 /* Proc hscfg file read handler
824 * This function can be used to read host sleep configuration
825 * parameters from driver.
826 */
827 static ssize_t
mwifiex_hscfg_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)828 mwifiex_hscfg_read(struct file *file, char __user *ubuf,
829 size_t count, loff_t *ppos)
830 {
831 struct mwifiex_private *priv = (void *)file->private_data;
832 unsigned long addr = get_zeroed_page(GFP_KERNEL);
833 char *buf = (char *)addr;
834 int pos, ret;
835 struct mwifiex_ds_hs_cfg hscfg;
836
837 if (!buf)
838 return -ENOMEM;
839
840 mwifiex_set_hs_params(priv, HostCmd_ACT_GEN_GET,
841 MWIFIEX_SYNC_CMD, &hscfg);
842
843 pos = snprintf(buf, PAGE_SIZE, "%u 0x%x 0x%x\n", hscfg.conditions,
844 hscfg.gpio, hscfg.gap);
845
846 ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos);
847
848 free_page(addr);
849 return ret;
850 }
851
852 static ssize_t
mwifiex_timeshare_coex_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)853 mwifiex_timeshare_coex_read(struct file *file, char __user *ubuf,
854 size_t count, loff_t *ppos)
855 {
856 struct mwifiex_private *priv = file->private_data;
857 char buf[3];
858 bool timeshare_coex;
859 int ret;
860 unsigned int len;
861
862 if (priv->adapter->fw_api_ver != MWIFIEX_FW_V15)
863 return -EOPNOTSUPP;
864
865 ret = mwifiex_send_cmd(priv, HostCmd_CMD_ROBUST_COEX,
866 HostCmd_ACT_GEN_GET, 0, ×hare_coex, true);
867 if (ret)
868 return ret;
869
870 len = sprintf(buf, "%d\n", timeshare_coex);
871 return simple_read_from_buffer(ubuf, count, ppos, buf, len);
872 }
873
874 static ssize_t
mwifiex_timeshare_coex_write(struct file * file,const char __user * ubuf,size_t count,loff_t * ppos)875 mwifiex_timeshare_coex_write(struct file *file, const char __user *ubuf,
876 size_t count, loff_t *ppos)
877 {
878 bool timeshare_coex;
879 struct mwifiex_private *priv = file->private_data;
880 char kbuf[16];
881 int ret;
882
883 if (priv->adapter->fw_api_ver != MWIFIEX_FW_V15)
884 return -EOPNOTSUPP;
885
886 memset(kbuf, 0, sizeof(kbuf));
887
888 if (copy_from_user(&kbuf, ubuf, min_t(size_t, sizeof(kbuf) - 1, count)))
889 return -EFAULT;
890
891 if (strtobool(kbuf, ×hare_coex))
892 return -EINVAL;
893
894 ret = mwifiex_send_cmd(priv, HostCmd_CMD_ROBUST_COEX,
895 HostCmd_ACT_GEN_SET, 0, ×hare_coex, true);
896 if (ret)
897 return ret;
898 else
899 return count;
900 }
901
902 static ssize_t
mwifiex_reset_write(struct file * file,const char __user * ubuf,size_t count,loff_t * ppos)903 mwifiex_reset_write(struct file *file,
904 const char __user *ubuf, size_t count, loff_t *ppos)
905 {
906 struct mwifiex_private *priv = file->private_data;
907 struct mwifiex_adapter *adapter = priv->adapter;
908 bool result;
909 int rc;
910
911 rc = kstrtobool_from_user(ubuf, count, &result);
912 if (rc)
913 return rc;
914
915 if (!result)
916 return -EINVAL;
917
918 if (adapter->if_ops.card_reset) {
919 dev_info(adapter->dev, "Resetting per request\n");
920 adapter->if_ops.card_reset(adapter);
921 }
922
923 return count;
924 }
925
926 #define MWIFIEX_DFS_ADD_FILE(name) do { \
927 if (!debugfs_create_file(#name, 0644, priv->dfs_dev_dir, \
928 priv, &mwifiex_dfs_##name##_fops)) \
929 return; \
930 } while (0);
931
932 #define MWIFIEX_DFS_FILE_OPS(name) \
933 static const struct file_operations mwifiex_dfs_##name##_fops = { \
934 .read = mwifiex_##name##_read, \
935 .write = mwifiex_##name##_write, \
936 .open = simple_open, \
937 };
938
939 #define MWIFIEX_DFS_FILE_READ_OPS(name) \
940 static const struct file_operations mwifiex_dfs_##name##_fops = { \
941 .read = mwifiex_##name##_read, \
942 .open = simple_open, \
943 };
944
945 #define MWIFIEX_DFS_FILE_WRITE_OPS(name) \
946 static const struct file_operations mwifiex_dfs_##name##_fops = { \
947 .write = mwifiex_##name##_write, \
948 .open = simple_open, \
949 };
950
951
952 MWIFIEX_DFS_FILE_READ_OPS(info);
953 MWIFIEX_DFS_FILE_READ_OPS(debug);
954 MWIFIEX_DFS_FILE_READ_OPS(getlog);
955 MWIFIEX_DFS_FILE_OPS(regrdwr);
956 MWIFIEX_DFS_FILE_OPS(rdeeprom);
957 MWIFIEX_DFS_FILE_OPS(memrw);
958 MWIFIEX_DFS_FILE_OPS(hscfg);
959 MWIFIEX_DFS_FILE_OPS(histogram);
960 MWIFIEX_DFS_FILE_OPS(debug_mask);
961 MWIFIEX_DFS_FILE_OPS(timeshare_coex);
962 MWIFIEX_DFS_FILE_WRITE_OPS(reset);
963 MWIFIEX_DFS_FILE_OPS(verext);
964
965 /*
966 * This function creates the debug FS directory structure and the files.
967 */
968 void
mwifiex_dev_debugfs_init(struct mwifiex_private * priv)969 mwifiex_dev_debugfs_init(struct mwifiex_private *priv)
970 {
971 if (!mwifiex_dfs_dir || !priv)
972 return;
973
974 priv->dfs_dev_dir = debugfs_create_dir(priv->netdev->name,
975 mwifiex_dfs_dir);
976
977 if (!priv->dfs_dev_dir)
978 return;
979
980 MWIFIEX_DFS_ADD_FILE(info);
981 MWIFIEX_DFS_ADD_FILE(debug);
982 MWIFIEX_DFS_ADD_FILE(getlog);
983 MWIFIEX_DFS_ADD_FILE(regrdwr);
984 MWIFIEX_DFS_ADD_FILE(rdeeprom);
985
986 MWIFIEX_DFS_ADD_FILE(memrw);
987 MWIFIEX_DFS_ADD_FILE(hscfg);
988 MWIFIEX_DFS_ADD_FILE(histogram);
989 MWIFIEX_DFS_ADD_FILE(debug_mask);
990 MWIFIEX_DFS_ADD_FILE(timeshare_coex);
991 MWIFIEX_DFS_ADD_FILE(reset);
992 MWIFIEX_DFS_ADD_FILE(verext);
993 }
994
995 /*
996 * This function removes the debug FS directory structure and the files.
997 */
998 void
mwifiex_dev_debugfs_remove(struct mwifiex_private * priv)999 mwifiex_dev_debugfs_remove(struct mwifiex_private *priv)
1000 {
1001 if (!priv)
1002 return;
1003
1004 debugfs_remove_recursive(priv->dfs_dev_dir);
1005 }
1006
1007 /*
1008 * This function creates the top level proc directory.
1009 */
1010 void
mwifiex_debugfs_init(void)1011 mwifiex_debugfs_init(void)
1012 {
1013 if (!mwifiex_dfs_dir)
1014 mwifiex_dfs_dir = debugfs_create_dir("mwifiex", NULL);
1015 }
1016
1017 /*
1018 * This function removes the top level proc directory.
1019 */
1020 void
mwifiex_debugfs_remove(void)1021 mwifiex_debugfs_remove(void)
1022 {
1023 debugfs_remove(mwifiex_dfs_dir);
1024 }
1025
