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