blob: 753b5682d53fe9277dbc3dd92413250509f72ea4 [file] [log] [blame]
Bing Zhao5e6e3a92011-03-21 18:00:50 -07001/*
2 * Marvell Wireless LAN device driver: debugfs
3 *
4 * Copyright (C) 2011, 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
26static struct dentry *mwifiex_dfs_dir;
27
28static char *bss_modes[] = {
29 "Unknown",
Bing Zhao5e6e3a92011-03-21 18:00:50 -070030 "Ad-hoc",
Amitkumar Karwar38869d72011-07-07 17:33:20 -070031 "Managed",
Bing Zhao5e6e3a92011-03-21 18:00:50 -070032 "Auto"
33};
34
35/* size/addr for mwifiex_debug_info */
36#define item_size(n) (FIELD_SIZEOF(struct mwifiex_debug_info, n))
37#define item_addr(n) (offsetof(struct mwifiex_debug_info, n))
38
39/* size/addr for struct mwifiex_adapter */
40#define adapter_item_size(n) (FIELD_SIZEOF(struct mwifiex_adapter, n))
41#define adapter_item_addr(n) (offsetof(struct mwifiex_adapter, n))
42
43struct mwifiex_debug_data {
44 char name[32]; /* variable/array name */
45 u32 size; /* size of the variable/array */
46 size_t addr; /* address of the variable/array */
47 int num; /* number of variables in an array */
48};
49
50static struct mwifiex_debug_data items[] = {
51 {"int_counter", item_size(int_counter),
52 item_addr(int_counter), 1},
53 {"wmm_ac_vo", item_size(packets_out[WMM_AC_VO]),
54 item_addr(packets_out[WMM_AC_VO]), 1},
55 {"wmm_ac_vi", item_size(packets_out[WMM_AC_VI]),
56 item_addr(packets_out[WMM_AC_VI]), 1},
57 {"wmm_ac_be", item_size(packets_out[WMM_AC_BE]),
58 item_addr(packets_out[WMM_AC_BE]), 1},
59 {"wmm_ac_bk", item_size(packets_out[WMM_AC_BK]),
60 item_addr(packets_out[WMM_AC_BK]), 1},
Bing Zhao5e6e3a92011-03-21 18:00:50 -070061 {"tx_buf_size", item_size(tx_buf_size),
62 item_addr(tx_buf_size), 1},
63 {"curr_tx_buf_size", item_size(curr_tx_buf_size),
64 item_addr(curr_tx_buf_size), 1},
65 {"ps_mode", item_size(ps_mode),
66 item_addr(ps_mode), 1},
67 {"ps_state", item_size(ps_state),
68 item_addr(ps_state), 1},
69 {"is_deep_sleep", item_size(is_deep_sleep),
70 item_addr(is_deep_sleep), 1},
71 {"wakeup_dev_req", item_size(pm_wakeup_card_req),
72 item_addr(pm_wakeup_card_req), 1},
73 {"wakeup_tries", item_size(pm_wakeup_fw_try),
74 item_addr(pm_wakeup_fw_try), 1},
75 {"hs_configured", item_size(is_hs_configured),
76 item_addr(is_hs_configured), 1},
77 {"hs_activated", item_size(hs_activated),
78 item_addr(hs_activated), 1},
79 {"num_tx_timeout", item_size(num_tx_timeout),
80 item_addr(num_tx_timeout), 1},
81 {"num_cmd_timeout", item_size(num_cmd_timeout),
82 item_addr(num_cmd_timeout), 1},
83 {"timeout_cmd_id", item_size(timeout_cmd_id),
84 item_addr(timeout_cmd_id), 1},
85 {"timeout_cmd_act", item_size(timeout_cmd_act),
86 item_addr(timeout_cmd_act), 1},
87 {"last_cmd_id", item_size(last_cmd_id),
88 item_addr(last_cmd_id), DBG_CMD_NUM},
89 {"last_cmd_act", item_size(last_cmd_act),
90 item_addr(last_cmd_act), DBG_CMD_NUM},
91 {"last_cmd_index", item_size(last_cmd_index),
92 item_addr(last_cmd_index), 1},
93 {"last_cmd_resp_id", item_size(last_cmd_resp_id),
94 item_addr(last_cmd_resp_id), DBG_CMD_NUM},
95 {"last_cmd_resp_index", item_size(last_cmd_resp_index),
96 item_addr(last_cmd_resp_index), 1},
97 {"last_event", item_size(last_event),
98 item_addr(last_event), DBG_CMD_NUM},
99 {"last_event_index", item_size(last_event_index),
100 item_addr(last_event_index), 1},
101 {"num_cmd_h2c_fail", item_size(num_cmd_host_to_card_failure),
102 item_addr(num_cmd_host_to_card_failure), 1},
103 {"num_cmd_sleep_cfm_fail",
104 item_size(num_cmd_sleep_cfm_host_to_card_failure),
105 item_addr(num_cmd_sleep_cfm_host_to_card_failure), 1},
106 {"num_tx_h2c_fail", item_size(num_tx_host_to_card_failure),
107 item_addr(num_tx_host_to_card_failure), 1},
108 {"num_evt_deauth", item_size(num_event_deauth),
109 item_addr(num_event_deauth), 1},
110 {"num_evt_disassoc", item_size(num_event_disassoc),
111 item_addr(num_event_disassoc), 1},
112 {"num_evt_link_lost", item_size(num_event_link_lost),
113 item_addr(num_event_link_lost), 1},
114 {"num_cmd_deauth", item_size(num_cmd_deauth),
115 item_addr(num_cmd_deauth), 1},
116 {"num_cmd_assoc_ok", item_size(num_cmd_assoc_success),
117 item_addr(num_cmd_assoc_success), 1},
118 {"num_cmd_assoc_fail", item_size(num_cmd_assoc_failure),
119 item_addr(num_cmd_assoc_failure), 1},
120 {"cmd_sent", item_size(cmd_sent),
121 item_addr(cmd_sent), 1},
122 {"data_sent", item_size(data_sent),
123 item_addr(data_sent), 1},
124 {"cmd_resp_received", item_size(cmd_resp_received),
125 item_addr(cmd_resp_received), 1},
126 {"event_received", item_size(event_received),
127 item_addr(event_received), 1},
128
129 /* variables defined in struct mwifiex_adapter */
Amitkumar Karwar600f5d92011-04-13 17:27:06 -0700130 {"cmd_pending", adapter_item_size(cmd_pending),
131 adapter_item_addr(cmd_pending), 1},
Bing Zhao5e6e3a92011-03-21 18:00:50 -0700132 {"tx_pending", adapter_item_size(tx_pending),
133 adapter_item_addr(tx_pending), 1},
134 {"rx_pending", adapter_item_size(rx_pending),
135 adapter_item_addr(rx_pending), 1},
136};
137
138static int num_of_items = ARRAY_SIZE(items);
139
140/*
Bing Zhao5e6e3a92011-03-21 18:00:50 -0700141 * Proc info file read handler.
142 *
143 * This function is called when the 'info' file is opened for reading.
144 * It prints the following driver related information -
145 * - Driver name
146 * - Driver version
147 * - Driver extended version
148 * - Interface name
149 * - BSS mode
150 * - Media state (connected or disconnected)
151 * - MAC address
152 * - Total number of Tx bytes
153 * - Total number of Rx bytes
154 * - Total number of Tx packets
155 * - Total number of Rx packets
156 * - Total number of dropped Tx packets
157 * - Total number of dropped Rx packets
158 * - Total number of corrupted Tx packets
159 * - Total number of corrupted Rx packets
160 * - Carrier status (on or off)
161 * - Tx queue status (started or stopped)
162 *
163 * For STA mode drivers, it also prints the following extra -
164 * - ESSID
165 * - BSSID
166 * - Channel
167 * - Region code
168 * - Multicast count
169 * - Multicast addresses
170 */
171static ssize_t
172mwifiex_info_read(struct file *file, char __user *ubuf,
173 size_t count, loff_t *ppos)
174{
175 struct mwifiex_private *priv =
176 (struct mwifiex_private *) file->private_data;
177 struct net_device *netdev = priv->netdev;
178 struct netdev_hw_addr *ha;
Avinash Patil47411a02012-11-01 18:44:16 -0700179 struct netdev_queue *txq;
Bing Zhao5e6e3a92011-03-21 18:00:50 -0700180 unsigned long page = get_zeroed_page(GFP_KERNEL);
181 char *p = (char *) page, fmt[64];
182 struct mwifiex_bss_info info;
Yogesh Ashok Powar270e58e2011-05-03 20:11:46 -0700183 ssize_t ret;
Bing Zhao5e6e3a92011-03-21 18:00:50 -0700184 int i = 0;
185
186 if (!p)
187 return -ENOMEM;
188
189 memset(&info, 0, sizeof(info));
190 ret = mwifiex_get_bss_info(priv, &info);
191 if (ret)
192 goto free_and_exit;
193
194 mwifiex_drv_get_driver_version(priv->adapter, fmt, sizeof(fmt) - 1);
195
196 if (!priv->version_str[0])
197 mwifiex_get_ver_ext(priv);
198
199 p += sprintf(p, "driver_name = " "\"mwifiex\"\n");
200 p += sprintf(p, "driver_version = %s", fmt);
201 p += sprintf(p, "\nverext = %s", priv->version_str);
202 p += sprintf(p, "\ninterface_name=\"%s\"\n", netdev->name);
203 p += sprintf(p, "bss_mode=\"%s\"\n", bss_modes[info.bss_mode]);
204 p += sprintf(p, "media_state=\"%s\"\n",
205 (!priv->media_connected ? "Disconnected" : "Connected"));
Andy Shevchenko037b5592011-07-20 16:34:31 +0300206 p += sprintf(p, "mac_address=\"%pM\"\n", netdev->dev_addr);
Bing Zhao5e6e3a92011-03-21 18:00:50 -0700207
208 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) {
209 p += sprintf(p, "multicast_count=\"%d\"\n",
210 netdev_mc_count(netdev));
211 p += sprintf(p, "essid=\"%s\"\n", info.ssid.ssid);
Andy Shevchenko037b5592011-07-20 16:34:31 +0300212 p += sprintf(p, "bssid=\"%pM\"\n", info.bssid);
Bing Zhao5e6e3a92011-03-21 18:00:50 -0700213 p += sprintf(p, "channel=\"%d\"\n", (int) info.bss_chan);
Amitkumar Karwar5e218b72012-04-09 20:06:55 -0700214 p += sprintf(p, "country_code = \"%s\"\n", info.country_code);
Bing Zhao5e6e3a92011-03-21 18:00:50 -0700215
216 netdev_for_each_mc_addr(ha, netdev)
Andy Shevchenko037b5592011-07-20 16:34:31 +0300217 p += sprintf(p, "multicast_address[%d]=\"%pM\"\n",
218 i++, ha->addr);
Bing Zhao5e6e3a92011-03-21 18:00:50 -0700219 }
220
221 p += sprintf(p, "num_tx_bytes = %lu\n", priv->stats.tx_bytes);
222 p += sprintf(p, "num_rx_bytes = %lu\n", priv->stats.rx_bytes);
223 p += sprintf(p, "num_tx_pkts = %lu\n", priv->stats.tx_packets);
224 p += sprintf(p, "num_rx_pkts = %lu\n", priv->stats.rx_packets);
225 p += sprintf(p, "num_tx_pkts_dropped = %lu\n", priv->stats.tx_dropped);
226 p += sprintf(p, "num_rx_pkts_dropped = %lu\n", priv->stats.rx_dropped);
227 p += sprintf(p, "num_tx_pkts_err = %lu\n", priv->stats.tx_errors);
228 p += sprintf(p, "num_rx_pkts_err = %lu\n", priv->stats.rx_errors);
229 p += sprintf(p, "carrier %s\n", ((netif_carrier_ok(priv->netdev))
230 ? "on" : "off"));
Avinash Patil47411a02012-11-01 18:44:16 -0700231 p += sprintf(p, "tx queue");
232 for (i = 0; i < netdev->num_tx_queues; i++) {
233 txq = netdev_get_tx_queue(netdev, i);
234 p += sprintf(p, " %d:%s", i, netif_tx_queue_stopped(txq) ?
235 "stopped" : "started");
236 }
237 p += sprintf(p, "\n");
Bing Zhao5e6e3a92011-03-21 18:00:50 -0700238
239 ret = simple_read_from_buffer(ubuf, count, ppos, (char *) page,
240 (unsigned long) p - page);
241
242free_and_exit:
243 free_page(page);
244 return ret;
245}
246
247/*
248 * Proc getlog file read handler.
249 *
250 * This function is called when the 'getlog' file is opened for reading
251 * It prints the following log information -
252 * - Number of multicast Tx frames
253 * - Number of failed packets
254 * - Number of Tx retries
255 * - Number of multicast Tx retries
256 * - Number of duplicate frames
257 * - Number of RTS successes
258 * - Number of RTS failures
259 * - Number of ACK failures
260 * - Number of fragmented Rx frames
261 * - Number of multicast Rx frames
262 * - Number of FCS errors
263 * - Number of Tx frames
264 * - WEP ICV error counts
265 */
266static ssize_t
267mwifiex_getlog_read(struct file *file, char __user *ubuf,
268 size_t count, loff_t *ppos)
269{
270 struct mwifiex_private *priv =
271 (struct mwifiex_private *) file->private_data;
272 unsigned long page = get_zeroed_page(GFP_KERNEL);
273 char *p = (char *) page;
Yogesh Ashok Powar270e58e2011-05-03 20:11:46 -0700274 ssize_t ret;
Bing Zhao5e6e3a92011-03-21 18:00:50 -0700275 struct mwifiex_ds_get_stats stats;
276
277 if (!p)
278 return -ENOMEM;
279
280 memset(&stats, 0, sizeof(stats));
281 ret = mwifiex_get_stats_info(priv, &stats);
282 if (ret)
283 goto free_and_exit;
284
285 p += sprintf(p, "\n"
286 "mcasttxframe %u\n"
287 "failed %u\n"
288 "retry %u\n"
289 "multiretry %u\n"
290 "framedup %u\n"
291 "rtssuccess %u\n"
292 "rtsfailure %u\n"
293 "ackfailure %u\n"
294 "rxfrag %u\n"
295 "mcastrxframe %u\n"
296 "fcserror %u\n"
297 "txframe %u\n"
298 "wepicverrcnt-1 %u\n"
299 "wepicverrcnt-2 %u\n"
300 "wepicverrcnt-3 %u\n"
301 "wepicverrcnt-4 %u\n",
302 stats.mcast_tx_frame,
303 stats.failed,
304 stats.retry,
305 stats.multi_retry,
306 stats.frame_dup,
307 stats.rts_success,
308 stats.rts_failure,
309 stats.ack_failure,
310 stats.rx_frag,
311 stats.mcast_rx_frame,
312 stats.fcs_error,
313 stats.tx_frame,
314 stats.wep_icv_error[0],
315 stats.wep_icv_error[1],
316 stats.wep_icv_error[2],
317 stats.wep_icv_error[3]);
318
319
320 ret = simple_read_from_buffer(ubuf, count, ppos, (char *) page,
321 (unsigned long) p - page);
322
323free_and_exit:
324 free_page(page);
325 return ret;
326}
327
328static struct mwifiex_debug_info info;
329
330/*
331 * Proc debug file read handler.
332 *
333 * This function is called when the 'debug' file is opened for reading
334 * It prints the following log information -
335 * - Interrupt count
336 * - WMM AC VO packets count
337 * - WMM AC VI packets count
338 * - WMM AC BE packets count
339 * - WMM AC BK packets count
340 * - Maximum Tx buffer size
341 * - Tx buffer size
342 * - Current Tx buffer size
343 * - Power Save mode
344 * - Power Save state
345 * - Deep Sleep status
346 * - Device wakeup required status
347 * - Number of wakeup tries
348 * - Host Sleep configured status
349 * - Host Sleep activated status
350 * - Number of Tx timeouts
351 * - Number of command timeouts
352 * - Last timed out command ID
353 * - Last timed out command action
354 * - Last command ID
355 * - Last command action
356 * - Last command index
357 * - Last command response ID
358 * - Last command response index
359 * - Last event
360 * - Last event index
361 * - Number of host to card command failures
362 * - Number of sleep confirm command failures
363 * - Number of host to card data failure
364 * - Number of deauthentication events
365 * - Number of disassociation events
366 * - Number of link lost events
367 * - Number of deauthentication commands
368 * - Number of association success commands
369 * - Number of association failure commands
370 * - Number of commands sent
371 * - Number of data packets sent
372 * - Number of command responses received
373 * - Number of events received
374 * - Tx BA stream table (TID, RA)
375 * - Rx reorder table (TID, TA, Start window, Window size, Buffer)
376 */
377static ssize_t
378mwifiex_debug_read(struct file *file, char __user *ubuf,
379 size_t count, loff_t *ppos)
380{
381 struct mwifiex_private *priv =
382 (struct mwifiex_private *) file->private_data;
383 struct mwifiex_debug_data *d = &items[0];
384 unsigned long page = get_zeroed_page(GFP_KERNEL);
385 char *p = (char *) page;
Yogesh Ashok Powar270e58e2011-05-03 20:11:46 -0700386 ssize_t ret;
Bing Zhao5e6e3a92011-03-21 18:00:50 -0700387 size_t size, addr;
388 long val;
389 int i, j;
390
391 if (!p)
392 return -ENOMEM;
393
394 ret = mwifiex_get_debug_info(priv, &info);
395 if (ret)
396 goto free_and_exit;
397
398 for (i = 0; i < num_of_items; i++) {
399 p += sprintf(p, "%s=", d[i].name);
400
401 size = d[i].size / d[i].num;
402
403 if (i < (num_of_items - 3))
404 addr = d[i].addr + (size_t) &info;
405 else /* The last 3 items are struct mwifiex_adapter variables */
406 addr = d[i].addr + (size_t) priv->adapter;
407
408 for (j = 0; j < d[i].num; j++) {
409 switch (size) {
410 case 1:
411 val = *((u8 *) addr);
412 break;
413 case 2:
414 val = *((u16 *) addr);
415 break;
416 case 4:
417 val = *((u32 *) addr);
418 break;
419 case 8:
420 val = *((long long *) addr);
421 break;
422 default:
423 val = -1;
424 break;
425 }
426
427 p += sprintf(p, "%#lx ", val);
428 addr += size;
429 }
430
431 p += sprintf(p, "\n");
432 }
433
434 if (info.tx_tbl_num) {
435 p += sprintf(p, "Tx BA stream table:\n");
436 for (i = 0; i < info.tx_tbl_num; i++)
Andy Shevchenko037b5592011-07-20 16:34:31 +0300437 p += sprintf(p, "tid = %d, ra = %pM\n",
438 info.tx_tbl[i].tid, info.tx_tbl[i].ra);
Bing Zhao5e6e3a92011-03-21 18:00:50 -0700439 }
440
441 if (info.rx_tbl_num) {
442 p += sprintf(p, "Rx reorder table:\n");
443 for (i = 0; i < info.rx_tbl_num; i++) {
Andy Shevchenko037b5592011-07-20 16:34:31 +0300444 p += sprintf(p, "tid = %d, ta = %pM, "
Bing Zhao5e6e3a92011-03-21 18:00:50 -0700445 "start_win = %d, "
446 "win_size = %d, buffer: ",
447 info.rx_tbl[i].tid,
Andy Shevchenko037b5592011-07-20 16:34:31 +0300448 info.rx_tbl[i].ta,
Bing Zhao5e6e3a92011-03-21 18:00:50 -0700449 info.rx_tbl[i].start_win,
450 info.rx_tbl[i].win_size);
451
452 for (j = 0; j < info.rx_tbl[i].win_size; j++)
453 p += sprintf(p, "%c ",
454 info.rx_tbl[i].buffer[j] ?
455 '1' : '0');
456
457 p += sprintf(p, "\n");
458 }
459 }
460
461 ret = simple_read_from_buffer(ubuf, count, ppos, (char *) page,
462 (unsigned long) p - page);
463
464free_and_exit:
465 free_page(page);
466 return ret;
467}
468
469static u32 saved_reg_type, saved_reg_offset, saved_reg_value;
470
471/*
472 * Proc regrdwr file write handler.
473 *
474 * This function is called when the 'regrdwr' file is opened for writing
475 *
476 * This function can be used to write to a register.
477 */
478static ssize_t
479mwifiex_regrdwr_write(struct file *file,
480 const char __user *ubuf, size_t count, loff_t *ppos)
481{
482 unsigned long addr = get_zeroed_page(GFP_KERNEL);
483 char *buf = (char *) addr;
484 size_t buf_size = min(count, (size_t) (PAGE_SIZE - 1));
Yogesh Ashok Powar270e58e2011-05-03 20:11:46 -0700485 int ret;
Bing Zhao5e6e3a92011-03-21 18:00:50 -0700486 u32 reg_type = 0, reg_offset = 0, reg_value = UINT_MAX;
487
488 if (!buf)
489 return -ENOMEM;
490
491
492 if (copy_from_user(buf, ubuf, buf_size)) {
493 ret = -EFAULT;
494 goto done;
495 }
496
497 sscanf(buf, "%u %x %x", &reg_type, &reg_offset, &reg_value);
498
499 if (reg_type == 0 || reg_offset == 0) {
500 ret = -EINVAL;
501 goto done;
502 } else {
503 saved_reg_type = reg_type;
504 saved_reg_offset = reg_offset;
505 saved_reg_value = reg_value;
506 ret = count;
507 }
508done:
509 free_page(addr);
510 return ret;
511}
512
513/*
514 * Proc regrdwr file read handler.
515 *
516 * This function is called when the 'regrdwr' file is opened for reading
517 *
518 * This function can be used to read from a register.
519 */
520static ssize_t
521mwifiex_regrdwr_read(struct file *file, char __user *ubuf,
522 size_t count, loff_t *ppos)
523{
524 struct mwifiex_private *priv =
525 (struct mwifiex_private *) file->private_data;
526 unsigned long addr = get_zeroed_page(GFP_KERNEL);
527 char *buf = (char *) addr;
528 int pos = 0, ret = 0;
529 u32 reg_value;
530
531 if (!buf)
532 return -ENOMEM;
533
534 if (!saved_reg_type) {
535 /* No command has been given */
536 pos += snprintf(buf, PAGE_SIZE, "0");
537 goto done;
538 }
539 /* Set command has been given */
540 if (saved_reg_value != UINT_MAX) {
541 ret = mwifiex_reg_write(priv, saved_reg_type, saved_reg_offset,
542 saved_reg_value);
543
544 pos += snprintf(buf, PAGE_SIZE, "%u 0x%x 0x%x\n",
545 saved_reg_type, saved_reg_offset,
546 saved_reg_value);
547
548 ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos);
549
550 goto done;
551 }
552 /* Get command has been given */
553 ret = mwifiex_reg_read(priv, saved_reg_type,
554 saved_reg_offset, &reg_value);
555 if (ret) {
556 ret = -EINVAL;
557 goto done;
558 }
559
560 pos += snprintf(buf, PAGE_SIZE, "%u 0x%x 0x%x\n", saved_reg_type,
561 saved_reg_offset, reg_value);
562
563 ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos);
564
565done:
566 free_page(addr);
567 return ret;
568}
569
570static u32 saved_offset = -1, saved_bytes = -1;
571
572/*
573 * Proc rdeeprom file write handler.
574 *
575 * This function is called when the 'rdeeprom' file is opened for writing
576 *
577 * This function can be used to write to a RDEEPROM location.
578 */
579static ssize_t
580mwifiex_rdeeprom_write(struct file *file,
581 const char __user *ubuf, size_t count, loff_t *ppos)
582{
583 unsigned long addr = get_zeroed_page(GFP_KERNEL);
584 char *buf = (char *) addr;
585 size_t buf_size = min(count, (size_t) (PAGE_SIZE - 1));
586 int ret = 0;
587 int offset = -1, bytes = -1;
588
589 if (!buf)
590 return -ENOMEM;
591
592
593 if (copy_from_user(buf, ubuf, buf_size)) {
594 ret = -EFAULT;
595 goto done;
596 }
597
598 sscanf(buf, "%d %d", &offset, &bytes);
599
600 if (offset == -1 || bytes == -1) {
601 ret = -EINVAL;
602 goto done;
603 } else {
604 saved_offset = offset;
605 saved_bytes = bytes;
606 ret = count;
607 }
608done:
609 free_page(addr);
610 return ret;
611}
612
613/*
614 * Proc rdeeprom read write handler.
615 *
616 * This function is called when the 'rdeeprom' file is opened for reading
617 *
618 * This function can be used to read from a RDEEPROM location.
619 */
620static ssize_t
621mwifiex_rdeeprom_read(struct file *file, char __user *ubuf,
622 size_t count, loff_t *ppos)
623{
624 struct mwifiex_private *priv =
625 (struct mwifiex_private *) file->private_data;
626 unsigned long addr = get_zeroed_page(GFP_KERNEL);
627 char *buf = (char *) addr;
Yogesh Ashok Powar270e58e2011-05-03 20:11:46 -0700628 int pos = 0, ret = 0, i;
Bing Zhao5e6e3a92011-03-21 18:00:50 -0700629 u8 value[MAX_EEPROM_DATA];
630
631 if (!buf)
632 return -ENOMEM;
633
634 if (saved_offset == -1) {
635 /* No command has been given */
636 pos += snprintf(buf, PAGE_SIZE, "0");
637 goto done;
638 }
639
640 /* Get command has been given */
641 ret = mwifiex_eeprom_read(priv, (u16) saved_offset,
642 (u16) saved_bytes, value);
643 if (ret) {
644 ret = -EINVAL;
645 goto done;
646 }
647
648 pos += snprintf(buf, PAGE_SIZE, "%d %d ", saved_offset, saved_bytes);
649
650 for (i = 0; i < saved_bytes; i++)
651 pos += snprintf(buf + strlen(buf), PAGE_SIZE, "%d ", value[i]);
652
653 ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos);
654
655done:
656 free_page(addr);
657 return ret;
658}
659
660
661#define MWIFIEX_DFS_ADD_FILE(name) do { \
662 if (!debugfs_create_file(#name, 0644, priv->dfs_dev_dir, \
663 priv, &mwifiex_dfs_##name##_fops)) \
664 return; \
665} while (0);
666
667#define MWIFIEX_DFS_FILE_OPS(name) \
668static const struct file_operations mwifiex_dfs_##name##_fops = { \
669 .read = mwifiex_##name##_read, \
670 .write = mwifiex_##name##_write, \
Stephen Boyd234e3402012-04-05 14:25:11 -0700671 .open = simple_open, \
Bing Zhao5e6e3a92011-03-21 18:00:50 -0700672};
673
674#define MWIFIEX_DFS_FILE_READ_OPS(name) \
675static const struct file_operations mwifiex_dfs_##name##_fops = { \
676 .read = mwifiex_##name##_read, \
Stephen Boyd234e3402012-04-05 14:25:11 -0700677 .open = simple_open, \
Bing Zhao5e6e3a92011-03-21 18:00:50 -0700678};
679
680#define MWIFIEX_DFS_FILE_WRITE_OPS(name) \
681static const struct file_operations mwifiex_dfs_##name##_fops = { \
682 .write = mwifiex_##name##_write, \
Stephen Boyd234e3402012-04-05 14:25:11 -0700683 .open = simple_open, \
Bing Zhao5e6e3a92011-03-21 18:00:50 -0700684};
685
686
687MWIFIEX_DFS_FILE_READ_OPS(info);
688MWIFIEX_DFS_FILE_READ_OPS(debug);
689MWIFIEX_DFS_FILE_READ_OPS(getlog);
690MWIFIEX_DFS_FILE_OPS(regrdwr);
691MWIFIEX_DFS_FILE_OPS(rdeeprom);
692
693/*
694 * This function creates the debug FS directory structure and the files.
695 */
696void
697mwifiex_dev_debugfs_init(struct mwifiex_private *priv)
698{
699 if (!mwifiex_dfs_dir || !priv)
700 return;
701
702 priv->dfs_dev_dir = debugfs_create_dir(priv->netdev->name,
703 mwifiex_dfs_dir);
704
705 if (!priv->dfs_dev_dir)
706 return;
707
708 MWIFIEX_DFS_ADD_FILE(info);
709 MWIFIEX_DFS_ADD_FILE(debug);
710 MWIFIEX_DFS_ADD_FILE(getlog);
711 MWIFIEX_DFS_ADD_FILE(regrdwr);
712 MWIFIEX_DFS_ADD_FILE(rdeeprom);
Bing Zhao5e6e3a92011-03-21 18:00:50 -0700713}
714
715/*
716 * This function removes the debug FS directory structure and the files.
717 */
718void
719mwifiex_dev_debugfs_remove(struct mwifiex_private *priv)
720{
721 if (!priv)
722 return;
723
724 debugfs_remove_recursive(priv->dfs_dev_dir);
Bing Zhao5e6e3a92011-03-21 18:00:50 -0700725}
726
727/*
728 * This function creates the top level proc directory.
729 */
730void
731mwifiex_debugfs_init(void)
732{
733 if (!mwifiex_dfs_dir)
734 mwifiex_dfs_dir = debugfs_create_dir("mwifiex", NULL);
735}
736
737/*
738 * This function removes the top level proc directory.
739 */
740void
741mwifiex_debugfs_remove(void)
742{
743 if (mwifiex_dfs_dir)
744 debugfs_remove(mwifiex_dfs_dir);
745}