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