git.oblomov.eu Git - linux-2.6/blob - drivers/net/wireless/libertas/debugfs.c

   1 #include <linux/module.h>
   2 #include <linux/dcache.h>
   3 #include <linux/debugfs.h>
   4 #include <linux/delay.h>
   5 #include <linux/mm.h>
   6 #include <net/iw_handler.h>
   7
   8 #include "dev.h"
   9 #include "decl.h"
  10 #include "host.h"
  11 #include "debugfs.h"
  12
  13 static struct dentry *libertas_dir = NULL;
  14 static char *szStates[] = {
  15         "Connected",
  16         "Disconnected"
  17 };
  18
  19 #ifdef PROC_DEBUG
  20 static void libertas_debug_init(wlan_private * priv, struct net_device *dev);
  21 #endif
  22
  23 static int open_file_generic(struct inode *inode, struct file *file)
  24 {
  25         file->private_data = inode->i_private;
  26         return 0;
  27 }
  28
  29 static ssize_t write_file_dummy(struct file *file, const char __user *buf,
  30                                 size_t count, loff_t *ppos)
  31 {
  32         return -EINVAL;
  33 }
  34
  35 static const size_t len = PAGE_SIZE;
  36
  37 static ssize_t libertas_dev_info(struct file *file, char __user *userbuf,
  38                                   size_t count, loff_t *ppos)
  39 {
  40         wlan_private *priv = file->private_data;
  41         size_t pos = 0;
  42         unsigned long addr = get_zeroed_page(GFP_KERNEL);
  43         char *buf = (char *)addr;
  44         ssize_t res;
  45
  46         pos += snprintf(buf+pos, len-pos, "state = %s\n",
  47                                 szStates[priv->adapter->connect_status]);
  48         pos += snprintf(buf+pos, len-pos, "region_code = %02x\n",
  49                                 (u32) priv->adapter->regioncode);
  50
  51         res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
  52
  53         free_page(addr);
  54         return res;
  55 }
  56
  57
  58 static ssize_t libertas_getscantable(struct file *file, char __user *userbuf,
  59                                   size_t count, loff_t *ppos)
  60 {
  61         wlan_private *priv = file->private_data;
  62         size_t pos = 0;
  63         int numscansdone = 0, res;
  64         unsigned long addr = get_zeroed_page(GFP_KERNEL);
  65         char *buf = (char *)addr;
  66         struct bss_descriptor * iter_bss;
  67
  68         pos += snprintf(buf+pos, len-pos,
  69                 "# | ch  | ss  |       bssid       |   cap    |    TSF   | Qual | SSID \n");
  70
  71         mutex_lock(&priv->adapter->lock);
  72         list_for_each_entry (iter_bss, &priv->adapter->network_list, list) {
  73                 u16 cap;
  74
  75                 memcpy(&cap, &iter_bss->cap, sizeof(cap));
  76                 pos += snprintf(buf+pos, len-pos,
  77                         "%02u| %03d | %03ld | " MAC_FMT " |",
  78                         numscansdone, iter_bss->channel, iter_bss->rssi,
  79                         MAC_ARG(iter_bss->bssid));
  80                 pos += snprintf(buf+pos, len-pos, " %04x-", cap);
  81                 pos += snprintf(buf+pos, len-pos, "%c%c%c |",
  82                                 iter_bss->cap.ibss ? 'A' : 'I',
  83                                 iter_bss->cap.privacy ? 'P' : ' ',
  84                                 iter_bss->cap.spectrummgmt ? 'S' : ' ');
  85                 pos += snprintf(buf+pos, len-pos, " %08llx |", iter_bss->networktsf);
  86                 pos += snprintf(buf+pos, len-pos, " %d |", SCAN_RSSI(iter_bss->rssi));
  87                 pos += snprintf(buf+pos, len-pos, " %s\n",
  88                                 escape_essid(iter_bss->ssid, iter_bss->ssid_len));
  89
  90                 numscansdone++;
  91         }
  92         mutex_unlock(&priv->adapter->lock);
  93
  94         res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
  95
  96         free_page(addr);
  97         return res;
  98 }
  99
 100 static ssize_t libertas_sleepparams_write(struct file *file,
 101                                 const char __user *user_buf, size_t count,
 102                                 loff_t *ppos)
 103 {
 104         wlan_private *priv = file->private_data;
 105         ssize_t buf_size, res;
 106         int p1, p2, p3, p4, p5, p6;
 107         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 108         char *buf = (char *)addr;
 109
 110         buf_size = min(count, len - 1);
 111         if (copy_from_user(buf, user_buf, buf_size)) {
 112                 res = -EFAULT;
 113                 goto out_unlock;
 114         }
 115         res = sscanf(buf, "%d %d %d %d %d %d", &p1, &p2, &p3, &p4, &p5, &p6);
 116         if (res != 6) {
 117                 res = -EFAULT;
 118                 goto out_unlock;
 119         }
 120         priv->adapter->sp.sp_error = p1;
 121         priv->adapter->sp.sp_offset = p2;
 122         priv->adapter->sp.sp_stabletime = p3;
 123         priv->adapter->sp.sp_calcontrol = p4;
 124         priv->adapter->sp.sp_extsleepclk = p5;
 125         priv->adapter->sp.sp_reserved = p6;
 126
 127         res = libertas_prepare_and_send_command(priv,
 128                                 cmd_802_11_sleep_params,
 129                                 cmd_act_set,
 130                                 cmd_option_waitforrsp, 0, NULL);
 131
 132         if (!res)
 133                 res = count;
 134         else
 135                 res = -EINVAL;
 136
 137 out_unlock:
 138         free_page(addr);
 139         return res;
 140 }
 141
 142 static ssize_t libertas_sleepparams_read(struct file *file, char __user *userbuf,
 143                                   size_t count, loff_t *ppos)
 144 {
 145         wlan_private *priv = file->private_data;
 146         wlan_adapter *adapter = priv->adapter;
 147         ssize_t res;
 148         size_t pos = 0;
 149         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 150         char *buf = (char *)addr;
 151
 152         res = libertas_prepare_and_send_command(priv,
 153                                 cmd_802_11_sleep_params,
 154                                 cmd_act_get,
 155                                 cmd_option_waitforrsp, 0, NULL);
 156         if (res) {
 157                 res = -EFAULT;
 158                 goto out_unlock;
 159         }
 160
 161         pos += snprintf(buf, len, "%d %d %d %d %d %d\n", adapter->sp.sp_error,
 162                         adapter->sp.sp_offset, adapter->sp.sp_stabletime,
 163                         adapter->sp.sp_calcontrol, adapter->sp.sp_extsleepclk,
 164                         adapter->sp.sp_reserved);
 165
 166         res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
 167
 168 out_unlock:
 169         free_page(addr);
 170         return res;
 171 }
 172
 173 static ssize_t libertas_extscan(struct file *file, const char __user *userbuf,
 174                                   size_t count, loff_t *ppos)
 175 {
 176         wlan_private *priv = file->private_data;
 177         ssize_t res, buf_size;
 178         union iwreq_data wrqu;
 179         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 180         char *buf = (char *)addr;
 181
 182         buf_size = min(count, len - 1);
 183         if (copy_from_user(buf, userbuf, buf_size)) {
 184                 res = -EFAULT;
 185                 goto out_unlock;
 186         }
 187
 188         libertas_send_specific_ssid_scan(priv, buf, strlen(buf)-1, 0);
 189
 190         memset(&wrqu, 0, sizeof(union iwreq_data));
 191         wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
 192
 193 out_unlock:
 194         free_page(addr);
 195         return count;
 196 }
 197
 198 static int libertas_parse_chan(char *buf, size_t count,
 199                         struct wlan_ioctl_user_scan_cfg *scan_cfg, int dur)
 200 {
 201         char *start, *end, *hold, *str;
 202         int i = 0;
 203
 204         start = strstr(buf, "chan=");
 205         if (!start)
 206                 return -EINVAL;
 207         start += 5;
 208         end = strstr(start, " ");
 209         if (!end)
 210                 end = buf + count;
 211         hold = kzalloc((end - start)+1, GFP_KERNEL);
 212         if (!hold)
 213                 return -ENOMEM;
 214         strncpy(hold, start, end - start);
 215         hold[(end-start)+1] = '\0';
 216         while(hold && (str = strsep(&hold, ","))) {
 217                 int chan;
 218                 char band, passive = 0;
 219                 sscanf(str, "%d%c%c", &chan, &band, &passive);
 220                 scan_cfg->chanlist[i].channumber = chan;
 221                 scan_cfg->chanlist[i].scantype = passive ? 1 : 0;
 222                 if (band == 'b' || band == 'g')
 223                         scan_cfg->chanlist[i].radiotype = 0;
 224                 else if (band == 'a')
 225                         scan_cfg->chanlist[i].radiotype = 1;
 226
 227                 scan_cfg->chanlist[i].scantime = dur;
 228                 i++;
 229         }
 230
 231         kfree(hold);
 232         return i;
 233 }
 234
 235 static void libertas_parse_bssid(char *buf, size_t count,
 236                         struct wlan_ioctl_user_scan_cfg *scan_cfg)
 237 {
 238         char *hold;
 239         unsigned int mac[ETH_ALEN];
 240
 241         hold = strstr(buf, "bssid=");
 242         if (!hold)
 243                 return;
 244         hold += 6;
 245         sscanf(hold, MAC_FMT, mac, mac+1, mac+2, mac+3, mac+4, mac+5);
 246         memcpy(scan_cfg->bssid, mac, ETH_ALEN);
 247 }
 248
 249 static void libertas_parse_ssid(char *buf, size_t count,
 250                         struct wlan_ioctl_user_scan_cfg *scan_cfg)
 251 {
 252         char *hold, *end;
 253         ssize_t size;
 254
 255         hold = strstr(buf, "ssid=");
 256         if (!hold)
 257                 return;
 258         hold += 5;
 259         end = strstr(hold, " ");
 260         if (!end)
 261                 end = buf + count - 1;
 262
 263         size = min((size_t)IW_ESSID_MAX_SIZE, (size_t) (end - hold));
 264         strncpy(scan_cfg->ssid, hold, size);
 265
 266         return;
 267 }
 268
 269 static int libertas_parse_clear(char *buf, size_t count, const char *tag)
 270 {
 271         char *hold;
 272         int val;
 273
 274         hold = strstr(buf, tag);
 275         if (!hold)
 276                 return 0;
 277         hold += strlen(tag);
 278         sscanf(hold, "%d", &val);
 279
 280         if (val != 0)
 281                 val = 1;
 282
 283         return val;
 284 }
 285
 286 static int libertas_parse_dur(char *buf, size_t count,
 287                         struct wlan_ioctl_user_scan_cfg *scan_cfg)
 288 {
 289         char *hold;
 290         int val;
 291
 292         hold = strstr(buf, "dur=");
 293         if (!hold)
 294                 return 0;
 295         hold += 4;
 296         sscanf(hold, "%d", &val);
 297
 298         return val;
 299 }
 300
 301 static void libertas_parse_probes(char *buf, size_t count,
 302                         struct wlan_ioctl_user_scan_cfg *scan_cfg)
 303 {
 304         char *hold;
 305         int val;
 306
 307         hold = strstr(buf, "probes=");
 308         if (!hold)
 309                 return;
 310         hold += 7;
 311         sscanf(hold, "%d", &val);
 312
 313         scan_cfg->numprobes = val;
 314
 315         return;
 316 }
 317
 318 static void libertas_parse_type(char *buf, size_t count,
 319                         struct wlan_ioctl_user_scan_cfg *scan_cfg)
 320 {
 321         char *hold;
 322         int val;
 323
 324         hold = strstr(buf, "type=");
 325         if (!hold)
 326                 return;
 327         hold += 5;
 328         sscanf(hold, "%d", &val);
 329
 330         /* type=1,2 or 3 */
 331         if (val < 1 || val > 3)
 332                 return;
 333
 334         scan_cfg->bsstype = val;
 335
 336         return;
 337 }
 338
 339 static ssize_t libertas_setuserscan(struct file *file,
 340                                     const char __user *userbuf,
 341                                     size_t count, loff_t *ppos)
 342 {
 343         wlan_private *priv = file->private_data;
 344         ssize_t res, buf_size;
 345         struct wlan_ioctl_user_scan_cfg *scan_cfg;
 346         union iwreq_data wrqu;
 347         int dur;
 348         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 349         char *buf = (char *)addr;
 350
 351         scan_cfg = kzalloc(sizeof(struct wlan_ioctl_user_scan_cfg), GFP_KERNEL);
 352         if (!scan_cfg)
 353                 return -ENOMEM;
 354
 355         buf_size = min(count, len - 1);
 356         if (copy_from_user(buf, userbuf, buf_size)) {
 357                 res = -EFAULT;
 358                 goto out_unlock;
 359         }
 360
 361         scan_cfg->bsstype = WLAN_SCAN_BSS_TYPE_ANY;
 362
 363         dur = libertas_parse_dur(buf, count, scan_cfg);
 364         libertas_parse_chan(buf, count, scan_cfg, dur);
 365         libertas_parse_bssid(buf, count, scan_cfg);
 366         scan_cfg->clear_bssid = libertas_parse_clear(buf, count, "clear_bssid=");
 367         libertas_parse_ssid(buf, count, scan_cfg);
 368         scan_cfg->clear_ssid = libertas_parse_clear(buf, count, "clear_ssid=");
 369         libertas_parse_probes(buf, count, scan_cfg);
 370         libertas_parse_type(buf, count, scan_cfg);
 371
 372         wlan_scan_networks(priv, scan_cfg, 1);
 373         wait_event_interruptible(priv->adapter->cmd_pending,
 374                                  !priv->adapter->nr_cmd_pending);
 375
 376         memset(&wrqu, 0x00, sizeof(union iwreq_data));
 377         wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
 378
 379 out_unlock:
 380         free_page(addr);
 381         kfree(scan_cfg);
 382         return count;
 383 }
 384
 385 static int libertas_event_initcmd(wlan_private *priv, void **response_buf,
 386                         struct cmd_ctrl_node **cmdnode,
 387                         struct cmd_ds_command **cmd)
 388 {
 389         u16 wait_option = cmd_option_waitforrsp;
 390
 391         if (!(*cmdnode = libertas_get_free_cmd_ctrl_node(priv))) {
 392                 lbs_deb_debugfs("failed libertas_get_free_cmd_ctrl_node\n");
 393                 return -ENOMEM;
 394         }
 395         if (!(*response_buf = kmalloc(3000, GFP_KERNEL))) {
 396                 lbs_deb_debugfs("failed to allocate response buffer!\n");
 397                 return -ENOMEM;
 398         }
 399         libertas_set_cmd_ctrl_node(priv, *cmdnode, 0, wait_option, NULL);
 400         init_waitqueue_head(&(*cmdnode)->cmdwait_q);
 401         (*cmdnode)->pdata_buf = *response_buf;
 402         (*cmdnode)->cmdflags |= CMD_F_HOSTCMD;
 403         (*cmdnode)->cmdwaitqwoken = 0;
 404         *cmd = (struct cmd_ds_command *)(*cmdnode)->bufvirtualaddr;
 405         (*cmd)->command = cpu_to_le16(cmd_802_11_subscribe_event);
 406         (*cmd)->seqnum = cpu_to_le16(++priv->adapter->seqnum);
 407         (*cmd)->result = 0;
 408         return 0;
 409 }
 410
 411 static ssize_t libertas_lowrssi_read(struct file *file, char __user *userbuf,
 412                                   size_t count, loff_t *ppos)
 413 {
 414         wlan_private *priv = file->private_data;
 415         wlan_adapter *adapter = priv->adapter;
 416         struct cmd_ctrl_node *pcmdnode;
 417         struct cmd_ds_command *pcmdptr;
 418         struct cmd_ds_802_11_subscribe_event *event;
 419         void *response_buf;
 420         int res, cmd_len;
 421         ssize_t pos = 0;
 422         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 423         char *buf = (char *)addr;
 424
 425         res = libertas_event_initcmd(priv, &response_buf, &pcmdnode, &pcmdptr);
 426         if (res < 0) {
 427                 free_page(addr);
 428                 return res;
 429         }
 430
 431         event = &pcmdptr->params.subscribe_event;
 432         event->action = cpu_to_le16(cmd_act_get);
 433         pcmdptr->size = cpu_to_le16(sizeof(*event) + S_DS_GEN);
 434         libertas_queue_cmd(adapter, pcmdnode, 1);
 435         wake_up_interruptible(&priv->mainthread.waitq);
 436
 437         /* Sleep until response is generated by FW */
 438         wait_event_interruptible(pcmdnode->cmdwait_q,
 439                                  pcmdnode->cmdwaitqwoken);
 440
 441         pcmdptr = response_buf;
 442         if (pcmdptr->result) {
 443                 lbs_pr_err("%s: fail, result=%d\n", __func__,
 444                            le16_to_cpu(pcmdptr->result));
 445                 kfree(response_buf);
 446                 free_page(addr);
 447                 return 0;
 448         }
 449
 450         if (pcmdptr->command != cpu_to_le16(cmd_ret_802_11_subscribe_event)) {
 451                 lbs_pr_err("command response incorrect!\n");
 452                 kfree(response_buf);
 453                 free_page(addr);
 454                 return 0;
 455         }
 456
 457         cmd_len = S_DS_GEN + sizeof(struct cmd_ds_802_11_subscribe_event);
 458         event = (void *)(response_buf + S_DS_GEN);
 459         while (cmd_len < le16_to_cpu(pcmdptr->size)) {
 460                 struct mrvlietypesheader *header = (void *)(response_buf + cmd_len);
 461                 switch (header->type) {
 462                 struct mrvlietypes_rssithreshold  *Lowrssi;
 463                 case __constant_cpu_to_le16(TLV_TYPE_RSSI_LOW):
 464                         Lowrssi = (void *)(response_buf + cmd_len);
 465                         pos += snprintf(buf+pos, len-pos, "%d %d %d\n",
 466                                         Lowrssi->rssivalue,
 467                                         Lowrssi->rssifreq,
 468                                         (event->events & cpu_to_le16(0x0001))?1:0);
 469                 default:
 470                         cmd_len += sizeof(struct mrvlietypes_snrthreshold);
 471                         break;
 472                 }
 473         }
 474
 475         kfree(response_buf);
 476         res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
 477         free_page(addr);
 478         return res;
 479 }
 480
 481 static u16 libertas_get_events_bitmap(wlan_private *priv)
 482 {
 483         wlan_adapter *adapter = priv->adapter;
 484         struct cmd_ctrl_node *pcmdnode;
 485         struct cmd_ds_command *pcmdptr;
 486         struct cmd_ds_802_11_subscribe_event *event;
 487         void *response_buf;
 488         int res;
 489         u16 event_bitmap;
 490
 491         res = libertas_event_initcmd(priv, &response_buf, &pcmdnode, &pcmdptr);
 492         if (res < 0)
 493                 return res;
 494
 495         event = &pcmdptr->params.subscribe_event;
 496         event->action = cpu_to_le16(cmd_act_get);
 497         pcmdptr->size = cpu_to_le16(sizeof(*event) + S_DS_GEN);
 498         libertas_queue_cmd(adapter, pcmdnode, 1);
 499         wake_up_interruptible(&priv->mainthread.waitq);
 500
 501         /* Sleep until response is generated by FW */
 502         wait_event_interruptible(pcmdnode->cmdwait_q,
 503                                  pcmdnode->cmdwaitqwoken);
 504
 505         pcmdptr = response_buf;
 506
 507         if (pcmdptr->result) {
 508                 lbs_pr_err("%s: fail, result=%d\n", __func__,
 509                            le16_to_cpu(pcmdptr->result));
 510                 kfree(response_buf);
 511                 return 0;
 512         }
 513
 514         if (pcmdptr->command != cmd_ret_802_11_subscribe_event) {
 515                 lbs_pr_err("command response incorrect!\n");
 516                 kfree(response_buf);
 517                 return 0;
 518         }
 519
 520         event = (struct cmd_ds_802_11_subscribe_event *)(response_buf + S_DS_GEN);
 521         event_bitmap = le16_to_cpu(event->events);
 522         kfree(response_buf);
 523         return event_bitmap;
 524 }
 525
 526 static ssize_t libertas_lowrssi_write(struct file *file,
 527                                     const char __user *userbuf,
 528                                     size_t count, loff_t *ppos)
 529 {
 530         wlan_private *priv = file->private_data;
 531         wlan_adapter *adapter = priv->adapter;
 532         ssize_t res, buf_size;
 533         int value, freq, subscribed, cmd_len;
 534         struct cmd_ctrl_node *pcmdnode;
 535         struct cmd_ds_command *pcmdptr;
 536         struct cmd_ds_802_11_subscribe_event *event;
 537         struct mrvlietypes_rssithreshold *rssi_threshold;
 538         void *response_buf;
 539         u16 event_bitmap;
 540         u8 *ptr;
 541         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 542         char *buf = (char *)addr;
 543
 544         buf_size = min(count, len - 1);
 545         if (copy_from_user(buf, userbuf, buf_size)) {
 546                 res = -EFAULT;
 547                 goto out_unlock;
 548         }
 549         res = sscanf(buf, "%d %d %d", &value, &freq, &subscribed);
 550         if (res != 3) {
 551                 res = -EFAULT;
 552                 goto out_unlock;
 553         }
 554
 555         event_bitmap = libertas_get_events_bitmap(priv);
 556
 557         res = libertas_event_initcmd(priv, &response_buf, &pcmdnode, &pcmdptr);
 558         if (res < 0)
 559                 goto out_unlock;
 560
 561         event = &pcmdptr->params.subscribe_event;
 562         event->action = cpu_to_le16(cmd_act_set);
 563         pcmdptr->size = cpu_to_le16(S_DS_GEN +
 564                 sizeof(struct cmd_ds_802_11_subscribe_event) +
 565                 sizeof(struct mrvlietypes_rssithreshold));
 566
 567         cmd_len = S_DS_GEN + sizeof(struct cmd_ds_802_11_subscribe_event);
 568         ptr = (u8*) pcmdptr+cmd_len;
 569         rssi_threshold = (struct mrvlietypes_rssithreshold *)(ptr);
 570         rssi_threshold->header.type = cpu_to_le16(0x0104);
 571         rssi_threshold->header.len = cpu_to_le16(2);
 572         rssi_threshold->rssivalue = value;
 573         rssi_threshold->rssifreq = freq;
 574         event_bitmap |= subscribed ? 0x0001 : 0x0;
 575         event->events = cpu_to_le16(event_bitmap);
 576
 577         libertas_queue_cmd(adapter, pcmdnode, 1);
 578         wake_up_interruptible(&priv->mainthread.waitq);
 579
 580         /* Sleep until response is generated by FW */
 581         wait_event_interruptible(pcmdnode->cmdwait_q,
 582                                  pcmdnode->cmdwaitqwoken);
 583
 584         pcmdptr = response_buf;
 585
 586         if (pcmdptr->result) {
 587                 lbs_pr_err("%s: fail, result=%d\n", __func__,
 588                            le16_to_cpu(pcmdptr->result));
 589                 kfree(response_buf);
 590                 free_page(addr);
 591                 return 0;
 592         }
 593
 594         if (pcmdptr->command != cpu_to_le16(cmd_ret_802_11_subscribe_event)) {
 595                 lbs_pr_err("command response incorrect!\n");
 596                 kfree(response_buf);
 597                 free_page(addr);
 598                 return 0;
 599         }
 600
 601         res = count;
 602 out_unlock:
 603         free_page(addr);
 604         return res;
 605 }
 606
 607 static ssize_t libertas_lowsnr_read(struct file *file, char __user *userbuf,
 608                                   size_t count, loff_t *ppos)
 609 {
 610         wlan_private *priv = file->private_data;
 611         wlan_adapter *adapter = priv->adapter;
 612         struct cmd_ctrl_node *pcmdnode;
 613         struct cmd_ds_command *pcmdptr;
 614         struct cmd_ds_802_11_subscribe_event *event;
 615         void *response_buf;
 616         int res, cmd_len;
 617         ssize_t pos = 0;
 618         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 619         char *buf = (char *)addr;
 620
 621         res = libertas_event_initcmd(priv, &response_buf, &pcmdnode, &pcmdptr);
 622         if (res < 0) {
 623                 free_page(addr);
 624                 return res;
 625         }
 626
 627         event = &pcmdptr->params.subscribe_event;
 628         event->action = cpu_to_le16(cmd_act_get);
 629         pcmdptr->size = cpu_to_le16(sizeof(*event) + S_DS_GEN);
 630         libertas_queue_cmd(adapter, pcmdnode, 1);
 631         wake_up_interruptible(&priv->mainthread.waitq);
 632
 633         /* Sleep until response is generated by FW */
 634         wait_event_interruptible(pcmdnode->cmdwait_q,
 635                                  pcmdnode->cmdwaitqwoken);
 636
 637         pcmdptr = response_buf;
 638
 639         if (pcmdptr->result) {
 640                 lbs_pr_err("%s: fail, result=%d\n", __func__,
 641                            le16_to_cpu(pcmdptr->result));
 642                 kfree(response_buf);
 643                 free_page(addr);
 644                 return 0;
 645         }
 646
 647         if (pcmdptr->command != cpu_to_le16(cmd_ret_802_11_subscribe_event)) {
 648                 lbs_pr_err("command response incorrect!\n");
 649                 kfree(response_buf);
 650                 free_page(addr);
 651                 return 0;
 652         }
 653
 654         cmd_len = S_DS_GEN + sizeof(struct cmd_ds_802_11_subscribe_event);
 655         event = (void *)(response_buf + S_DS_GEN);
 656         while (cmd_len < le16_to_cpu(pcmdptr->size)) {
 657                 struct mrvlietypesheader *header = (void *)(response_buf + cmd_len);
 658                 switch (header->type) {
 659                 struct mrvlietypes_snrthreshold *LowSnr;
 660                 case __constant_cpu_to_le16(TLV_TYPE_SNR_LOW):
 661                         LowSnr = (void *)(response_buf + cmd_len);
 662                         pos += snprintf(buf+pos, len-pos, "%d %d %d\n",
 663                                         LowSnr->snrvalue,
 664                                         LowSnr->snrfreq,
 665                                         (event->events & cpu_to_le16(0x0002))?1:0);
 666                 default:
 667                         cmd_len += sizeof(struct mrvlietypes_snrthreshold);
 668                         break;
 669                 }
 670         }
 671
 672         kfree(response_buf);
 673
 674         res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
 675         free_page(addr);
 676         return res;
 677 }
 678
 679 static ssize_t libertas_lowsnr_write(struct file *file,
 680                                     const char __user *userbuf,
 681                                     size_t count, loff_t *ppos)
 682 {
 683         wlan_private *priv = file->private_data;
 684         wlan_adapter *adapter = priv->adapter;
 685         ssize_t res, buf_size;
 686         int value, freq, subscribed, cmd_len;
 687         struct cmd_ctrl_node *pcmdnode;
 688         struct cmd_ds_command *pcmdptr;
 689         struct cmd_ds_802_11_subscribe_event *event;
 690         struct mrvlietypes_snrthreshold *snr_threshold;
 691         void *response_buf;
 692         u16 event_bitmap;
 693         u8 *ptr;
 694         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 695         char *buf = (char *)addr;
 696
 697         buf_size = min(count, len - 1);
 698         if (copy_from_user(buf, userbuf, buf_size)) {
 699                 res = -EFAULT;
 700                 goto out_unlock;
 701         }
 702         res = sscanf(buf, "%d %d %d", &value, &freq, &subscribed);
 703         if (res != 3) {
 704                 res = -EFAULT;
 705                 goto out_unlock;
 706         }
 707
 708         event_bitmap = libertas_get_events_bitmap(priv);
 709
 710         res = libertas_event_initcmd(priv, &response_buf, &pcmdnode, &pcmdptr);
 711         if (res < 0)
 712                 goto out_unlock;
 713
 714         event = &pcmdptr->params.subscribe_event;
 715         event->action = cpu_to_le16(cmd_act_set);
 716         pcmdptr->size = cpu_to_le16(S_DS_GEN +
 717                 sizeof(struct cmd_ds_802_11_subscribe_event) +
 718                 sizeof(struct mrvlietypes_snrthreshold));
 719         cmd_len = S_DS_GEN + sizeof(struct cmd_ds_802_11_subscribe_event);
 720         ptr = (u8*) pcmdptr+cmd_len;
 721         snr_threshold = (struct mrvlietypes_snrthreshold *)(ptr);
 722         snr_threshold->header.type = cpu_to_le16(TLV_TYPE_SNR_LOW);
 723         snr_threshold->header.len = cpu_to_le16(2);
 724         snr_threshold->snrvalue = value;
 725         snr_threshold->snrfreq = freq;
 726         event_bitmap |= subscribed ? 0x0002 : 0x0;
 727         event->events = cpu_to_le16(event_bitmap);
 728
 729         libertas_queue_cmd(adapter, pcmdnode, 1);
 730         wake_up_interruptible(&priv->mainthread.waitq);
 731
 732         /* Sleep until response is generated by FW */
 733         wait_event_interruptible(pcmdnode->cmdwait_q,
 734                                  pcmdnode->cmdwaitqwoken);
 735
 736         pcmdptr = response_buf;
 737
 738         if (pcmdptr->result) {
 739                 lbs_pr_err("%s: fail, result=%d\n", __func__,
 740                            le16_to_cpu(pcmdptr->result));
 741                 kfree(response_buf);
 742                 free_page(addr);
 743                 return 0;
 744         }
 745
 746         if (pcmdptr->command != cpu_to_le16(cmd_ret_802_11_subscribe_event)) {
 747                 lbs_pr_err("command response incorrect!\n");
 748                 kfree(response_buf);
 749                 free_page(addr);
 750                 return 0;
 751         }
 752
 753         res = count;
 754
 755 out_unlock:
 756         free_page(addr);
 757         return res;
 758 }
 759
 760 static ssize_t libertas_failcount_read(struct file *file, char __user *userbuf,
 761                                   size_t count, loff_t *ppos)
 762 {
 763         wlan_private *priv = file->private_data;
 764         wlan_adapter *adapter = priv->adapter;
 765         struct cmd_ctrl_node *pcmdnode;
 766         struct cmd_ds_command *pcmdptr;
 767         struct cmd_ds_802_11_subscribe_event *event;
 768         void *response_buf;
 769         int res, cmd_len;
 770         ssize_t pos = 0;
 771         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 772         char *buf = (char *)addr;
 773
 774         res = libertas_event_initcmd(priv, &response_buf, &pcmdnode, &pcmdptr);
 775         if (res < 0) {
 776                 free_page(addr);
 777                 return res;
 778         }
 779
 780         event = &pcmdptr->params.subscribe_event;
 781         event->action = cpu_to_le16(cmd_act_get);
 782         pcmdptr->size = cpu_to_le16(sizeof(*event) + S_DS_GEN);
 783         libertas_queue_cmd(adapter, pcmdnode, 1);
 784         wake_up_interruptible(&priv->mainthread.waitq);
 785
 786         /* Sleep until response is generated by FW */
 787         wait_event_interruptible(pcmdnode->cmdwait_q,
 788                                  pcmdnode->cmdwaitqwoken);
 789
 790         pcmdptr = response_buf;
 791
 792         if (pcmdptr->result) {
 793                 lbs_pr_err("%s: fail, result=%d\n", __func__,
 794                            le16_to_cpu(pcmdptr->result));
 795                 kfree(response_buf);
 796                 free_page(addr);
 797                 return 0;
 798         }
 799
 800         if (pcmdptr->command != cpu_to_le16(cmd_ret_802_11_subscribe_event)) {
 801                 lbs_pr_err("command response incorrect!\n");
 802                 kfree(response_buf);
 803                 free_page(addr);
 804                 return 0;
 805         }
 806
 807         cmd_len = S_DS_GEN + sizeof(struct cmd_ds_802_11_subscribe_event);
 808         event = (void *)(response_buf + S_DS_GEN);
 809         while (cmd_len < le16_to_cpu(pcmdptr->size)) {
 810                 struct mrvlietypesheader *header = (void *)(response_buf + cmd_len);
 811                 switch (header->type) {
 812                 struct mrvlietypes_failurecount *failcount;
 813                 case __constant_cpu_to_le16(TLV_TYPE_FAILCOUNT):
 814                         failcount = (void *)(response_buf + cmd_len);
 815                         pos += snprintf(buf+pos, len-pos, "%d %d %d\n",
 816                                         failcount->failvalue,
 817                                         failcount->Failfreq,
 818                                         (event->events & cpu_to_le16(0x0004))?1:0);
 819                 default:
 820                         cmd_len += sizeof(struct mrvlietypes_failurecount);
 821                         break;
 822                 }
 823         }
 824
 825         kfree(response_buf);
 826         res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
 827         free_page(addr);
 828         return res;
 829 }
 830
 831 static ssize_t libertas_failcount_write(struct file *file,
 832                                     const char __user *userbuf,
 833                                     size_t count, loff_t *ppos)
 834 {
 835         wlan_private *priv = file->private_data;
 836         wlan_adapter *adapter = priv->adapter;
 837         ssize_t res, buf_size;
 838         int value, freq, subscribed, cmd_len;
 839         struct cmd_ctrl_node *pcmdnode;
 840         struct cmd_ds_command *pcmdptr;
 841         struct cmd_ds_802_11_subscribe_event *event;
 842         struct mrvlietypes_failurecount *failcount;
 843         void *response_buf;
 844         u16 event_bitmap;
 845         u8 *ptr;
 846         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 847         char *buf = (char *)addr;
 848
 849         buf_size = min(count, len - 1);
 850         if (copy_from_user(buf, userbuf, buf_size)) {
 851                 res = -EFAULT;
 852                 goto out_unlock;
 853         }
 854         res = sscanf(buf, "%d %d %d", &value, &freq, &subscribed);
 855         if (res != 3) {
 856                 res = -EFAULT;
 857                 goto out_unlock;
 858         }
 859
 860         event_bitmap = libertas_get_events_bitmap(priv);
 861
 862         res = libertas_event_initcmd(priv, &response_buf, &pcmdnode, &pcmdptr);
 863         if (res < 0)
 864                 goto out_unlock;
 865
 866         event = &pcmdptr->params.subscribe_event;
 867         event->action = cpu_to_le16(cmd_act_set);
 868         pcmdptr->size = cpu_to_le16(S_DS_GEN +
 869                 sizeof(struct cmd_ds_802_11_subscribe_event) +
 870                 sizeof(struct mrvlietypes_failurecount));
 871         cmd_len = S_DS_GEN + sizeof(struct cmd_ds_802_11_subscribe_event);
 872         ptr = (u8*) pcmdptr+cmd_len;
 873         failcount = (struct mrvlietypes_failurecount *)(ptr);
 874         failcount->header.type = cpu_to_le16(TLV_TYPE_FAILCOUNT);
 875         failcount->header.len = cpu_to_le16(2);
 876         failcount->failvalue = value;
 877         failcount->Failfreq = freq;
 878         event_bitmap |= subscribed ? 0x0004 : 0x0;
 879         event->events = cpu_to_le16(event_bitmap);
 880
 881         libertas_queue_cmd(adapter, pcmdnode, 1);
 882         wake_up_interruptible(&priv->mainthread.waitq);
 883
 884         /* Sleep until response is generated by FW */
 885         wait_event_interruptible(pcmdnode->cmdwait_q,
 886                                  pcmdnode->cmdwaitqwoken);
 887
 888         pcmdptr = (struct cmd_ds_command *)response_buf;
 889
 890         if (pcmdptr->result) {
 891                 lbs_pr_err("%s: fail, result=%d\n", __func__,
 892                            le16_to_cpu(pcmdptr->result));
 893                 kfree(response_buf);
 894                 free_page(addr);
 895                 return 0;
 896         }
 897
 898         if (pcmdptr->command != cpu_to_le16(cmd_ret_802_11_subscribe_event)) {
 899                 lbs_pr_err("command response incorrect!\n");
 900                 kfree(response_buf);
 901                 free_page(addr);
 902                 return 0;
 903         }
 904
 905         res = count;
 906 out_unlock:
 907         free_page(addr);
 908         return res;
 909 }
 910
 911 static ssize_t libertas_bcnmiss_read(struct file *file, char __user *userbuf,
 912                                   size_t count, loff_t *ppos)
 913 {
 914         wlan_private *priv = file->private_data;
 915         wlan_adapter *adapter = priv->adapter;
 916         struct cmd_ctrl_node *pcmdnode;
 917         struct cmd_ds_command *pcmdptr;
 918         struct cmd_ds_802_11_subscribe_event *event;
 919         void *response_buf;
 920         int res, cmd_len;
 921         ssize_t pos = 0;
 922         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 923         char *buf = (char *)addr;
 924
 925         res = libertas_event_initcmd(priv, &response_buf, &pcmdnode, &pcmdptr);
 926         if (res < 0) {
 927                 free_page(addr);
 928                 return res;
 929         }
 930
 931         event = &pcmdptr->params.subscribe_event;
 932         event->action = cpu_to_le16(cmd_act_get);
 933         pcmdptr->size = cpu_to_le16(sizeof(*event) + S_DS_GEN);
 934         libertas_queue_cmd(adapter, pcmdnode, 1);
 935         wake_up_interruptible(&priv->mainthread.waitq);
 936
 937         /* Sleep until response is generated by FW */
 938         wait_event_interruptible(pcmdnode->cmdwait_q,
 939                                  pcmdnode->cmdwaitqwoken);
 940
 941         pcmdptr = response_buf;
 942
 943         if (pcmdptr->result) {
 944                 lbs_pr_err("%s: fail, result=%d\n", __func__,
 945                            le16_to_cpu(pcmdptr->result));
 946                 free_page(addr);
 947                 kfree(response_buf);
 948                 return 0;
 949         }
 950
 951         if (pcmdptr->command != cpu_to_le16(cmd_ret_802_11_subscribe_event)) {
 952                 lbs_pr_err("command response incorrect!\n");
 953                 free_page(addr);
 954                 kfree(response_buf);
 955                 return 0;
 956         }
 957
 958         cmd_len = S_DS_GEN + sizeof(struct cmd_ds_802_11_subscribe_event);
 959         event = (void *)(response_buf + S_DS_GEN);
 960         while (cmd_len < le16_to_cpu(pcmdptr->size)) {
 961                 struct mrvlietypesheader *header = (void *)(response_buf + cmd_len);
 962                 switch (header->type) {
 963                 struct mrvlietypes_beaconsmissed *bcnmiss;
 964                 case __constant_cpu_to_le16(TLV_TYPE_BCNMISS):
 965                         bcnmiss = (void *)(response_buf + cmd_len);
 966                         pos += snprintf(buf+pos, len-pos, "%d N/A %d\n",
 967                                         bcnmiss->beaconmissed,
 968                                         (event->events & cpu_to_le16(0x0008))?1:0);
 969                 default:
 970                         cmd_len += sizeof(struct mrvlietypes_beaconsmissed);
 971                         break;
 972                 }
 973         }
 974
 975         kfree(response_buf);
 976
 977         res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
 978         free_page(addr);
 979         return res;
 980 }
 981
 982 static ssize_t libertas_bcnmiss_write(struct file *file,
 983                                     const char __user *userbuf,
 984                                     size_t count, loff_t *ppos)
 985 {
 986         wlan_private *priv = file->private_data;
 987         wlan_adapter *adapter = priv->adapter;
 988         ssize_t res, buf_size;
 989         int value, freq, subscribed, cmd_len;
 990         struct cmd_ctrl_node *pcmdnode;
 991         struct cmd_ds_command *pcmdptr;
 992         struct cmd_ds_802_11_subscribe_event *event;
 993         struct mrvlietypes_beaconsmissed *bcnmiss;
 994         void *response_buf;
 995         u16 event_bitmap;
 996         u8 *ptr;
 997         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 998         char *buf = (char *)addr;
 999
1000         buf_size = min(count, len - 1);
1001         if (copy_from_user(buf, userbuf, buf_size)) {
1002                 res = -EFAULT;
1003                 goto out_unlock;
1004         }
1005         res = sscanf(buf, "%d %d %d", &value, &freq, &subscribed);
1006         if (res != 3) {
1007                 res = -EFAULT;
1008                 goto out_unlock;
1009         }
1010
1011         event_bitmap = libertas_get_events_bitmap(priv);
1012
1013         res = libertas_event_initcmd(priv, &response_buf, &pcmdnode, &pcmdptr);
1014         if (res < 0)
1015                 goto out_unlock;
1016
1017         event = &pcmdptr->params.subscribe_event;
1018         event->action = cpu_to_le16(cmd_act_set);
1019         pcmdptr->size = cpu_to_le16(S_DS_GEN +
1020                 sizeof(struct cmd_ds_802_11_subscribe_event) +
1021                 sizeof(struct mrvlietypes_beaconsmissed));
1022         cmd_len = S_DS_GEN + sizeof(struct cmd_ds_802_11_subscribe_event);
1023         ptr = (u8*) pcmdptr+cmd_len;
1024         bcnmiss = (struct mrvlietypes_beaconsmissed *)(ptr);
1025         bcnmiss->header.type = cpu_to_le16(TLV_TYPE_BCNMISS);
1026         bcnmiss->header.len = cpu_to_le16(2);
1027         bcnmiss->beaconmissed = value;
1028         event_bitmap |= subscribed ? 0x0008 : 0x0;
1029         event->events = cpu_to_le16(event_bitmap);
1030
1031         libertas_queue_cmd(adapter, pcmdnode, 1);
1032         wake_up_interruptible(&priv->mainthread.waitq);
1033
1034         /* Sleep until response is generated by FW */
1035         wait_event_interruptible(pcmdnode->cmdwait_q,
1036                                  pcmdnode->cmdwaitqwoken);
1037
1038         pcmdptr = response_buf;
1039
1040         if (pcmdptr->result) {
1041                 lbs_pr_err("%s: fail, result=%d\n", __func__,
1042                            le16_to_cpu(pcmdptr->result));
1043                 kfree(response_buf);
1044                 free_page(addr);
1045                 return 0;
1046         }
1047
1048         if (pcmdptr->command != cpu_to_le16(cmd_ret_802_11_subscribe_event)) {
1049                 lbs_pr_err("command response incorrect!\n");
1050                 free_page(addr);
1051                 kfree(response_buf);
1052                 return 0;
1053         }
1054
1055         res = count;
1056 out_unlock:
1057         free_page(addr);
1058         return res;
1059 }
1060
1061 static ssize_t libertas_highrssi_read(struct file *file, char __user *userbuf,
1062                                   size_t count, loff_t *ppos)
1063 {
1064         wlan_private *priv = file->private_data;
1065         wlan_adapter *adapter = priv->adapter;
1066         struct cmd_ctrl_node *pcmdnode;
1067         struct cmd_ds_command *pcmdptr;
1068         struct cmd_ds_802_11_subscribe_event *event;
1069         void *response_buf;
1070         int res, cmd_len;
1071         ssize_t pos = 0;
1072         unsigned long addr = get_zeroed_page(GFP_KERNEL);
1073         char *buf = (char *)addr;
1074
1075         res = libertas_event_initcmd(priv, &response_buf, &pcmdnode, &pcmdptr);
1076         if (res < 0) {
1077                 free_page(addr);
1078                 return res;
1079         }
1080
1081         event = &pcmdptr->params.subscribe_event;
1082         event->action = cpu_to_le16(cmd_act_get);
1083         pcmdptr->size = cpu_to_le16(sizeof(*event) + S_DS_GEN);
1084         libertas_queue_cmd(adapter, pcmdnode, 1);
1085         wake_up_interruptible(&priv->mainthread.waitq);
1086
1087         /* Sleep until response is generated by FW */
1088         wait_event_interruptible(pcmdnode->cmdwait_q,
1089                                  pcmdnode->cmdwaitqwoken);
1090
1091         pcmdptr = response_buf;
1092
1093         if (pcmdptr->result) {
1094                 lbs_pr_err("%s: fail, result=%d\n", __func__,
1095                            le16_to_cpu(pcmdptr->result));
1096                 kfree(response_buf);
1097                 free_page(addr);
1098                 return 0;
1099         }
1100
1101         if (pcmdptr->command != cpu_to_le16(cmd_ret_802_11_subscribe_event)) {
1102                 lbs_pr_err("command response incorrect!\n");
1103                 kfree(response_buf);
1104                 free_page(addr);
1105                 return 0;
1106         }
1107
1108         cmd_len = S_DS_GEN + sizeof(struct cmd_ds_802_11_subscribe_event);
1109         event = (void *)(response_buf + S_DS_GEN);
1110         while (cmd_len < le16_to_cpu(pcmdptr->size)) {
1111                 struct mrvlietypesheader *header = (void *)(response_buf + cmd_len);
1112                 switch (header->type) {
1113                 struct mrvlietypes_rssithreshold  *Highrssi;
1114                 case __constant_cpu_to_le16(TLV_TYPE_RSSI_HIGH):
1115                         Highrssi = (void *)(response_buf + cmd_len);
1116                         pos += snprintf(buf+pos, len-pos, "%d %d %d\n",
1117                                         Highrssi->rssivalue,
1118                                         Highrssi->rssifreq,
1119                                         (event->events & cpu_to_le16(0x0010))?1:0);
1120                 default:
1121                         cmd_len += sizeof(struct mrvlietypes_snrthreshold);
1122                         break;
1123                 }
1124         }
1125
1126         kfree(response_buf);
1127
1128         res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
1129         free_page(addr);
1130         return res;
1131 }
1132
1133 static ssize_t libertas_highrssi_write(struct file *file,
1134                                     const char __user *userbuf,
1135                                     size_t count, loff_t *ppos)
1136 {
1137         wlan_private *priv = file->private_data;
1138         wlan_adapter *adapter = priv->adapter;
1139         ssize_t res, buf_size;
1140         int value, freq, subscribed, cmd_len;
1141         struct cmd_ctrl_node *pcmdnode;
1142         struct cmd_ds_command *pcmdptr;
1143         struct cmd_ds_802_11_subscribe_event *event;
1144         struct mrvlietypes_rssithreshold *rssi_threshold;
1145         void *response_buf;
1146         u16 event_bitmap;
1147         u8 *ptr;
1148         unsigned long addr = get_zeroed_page(GFP_KERNEL);
1149         char *buf = (char *)addr;
1150
1151         buf_size = min(count, len - 1);
1152         if (copy_from_user(buf, userbuf, buf_size)) {
1153                 res = -EFAULT;
1154                 goto out_unlock;
1155         }
1156         res = sscanf(buf, "%d %d %d", &value, &freq, &subscribed);
1157         if (res != 3) {
1158                 res = -EFAULT;
1159                 goto out_unlock;
1160         }
1161
1162         event_bitmap = libertas_get_events_bitmap(priv);
1163
1164         res = libertas_event_initcmd(priv, &response_buf, &pcmdnode, &pcmdptr);
1165         if (res < 0)
1166                 goto out_unlock;
1167
1168         event = &pcmdptr->params.subscribe_event;
1169         event->action = cpu_to_le16(cmd_act_set);
1170         pcmdptr->size = cpu_to_le16(S_DS_GEN +
1171                 sizeof(struct cmd_ds_802_11_subscribe_event) +
1172                 sizeof(struct mrvlietypes_rssithreshold));
1173         cmd_len = S_DS_GEN + sizeof(struct cmd_ds_802_11_subscribe_event);
1174         ptr = (u8*) pcmdptr+cmd_len;
1175         rssi_threshold = (struct mrvlietypes_rssithreshold *)(ptr);
1176         rssi_threshold->header.type = cpu_to_le16(TLV_TYPE_RSSI_HIGH);
1177         rssi_threshold->header.len = cpu_to_le16(2);
1178         rssi_threshold->rssivalue = value;
1179         rssi_threshold->rssifreq = freq;
1180         event_bitmap |= subscribed ? 0x0010 : 0x0;
1181         event->events = cpu_to_le16(event_bitmap);
1182
1183         libertas_queue_cmd(adapter, pcmdnode, 1);
1184         wake_up_interruptible(&priv->mainthread.waitq);
1185
1186         /* Sleep until response is generated by FW */
1187         wait_event_interruptible(pcmdnode->cmdwait_q,
1188                                  pcmdnode->cmdwaitqwoken);
1189
1190         pcmdptr = response_buf;
1191
1192         if (pcmdptr->result) {
1193                 lbs_pr_err("%s: fail, result=%d\n", __func__,
1194                            le16_to_cpu(pcmdptr->result));
1195                 kfree(response_buf);
1196                 return 0;
1197         }
1198
1199         if (pcmdptr->command != cpu_to_le16(cmd_ret_802_11_subscribe_event)) {
1200                 lbs_pr_err("command response incorrect!\n");
1201                 kfree(response_buf);
1202                 return 0;
1203         }
1204
1205         res = count;
1206 out_unlock:
1207         free_page(addr);
1208         return res;
1209 }
1210
1211 static ssize_t libertas_highsnr_read(struct file *file, char __user *userbuf,
1212                                   size_t count, loff_t *ppos)
1213 {
1214         wlan_private *priv = file->private_data;
1215         wlan_adapter *adapter = priv->adapter;
1216         struct cmd_ctrl_node *pcmdnode;
1217         struct cmd_ds_command *pcmdptr;
1218         struct cmd_ds_802_11_subscribe_event *event;
1219         void *response_buf;
1220         int res, cmd_len;
1221         ssize_t pos = 0;
1222         unsigned long addr = get_zeroed_page(GFP_KERNEL);
1223         char *buf = (char *)addr;
1224
1225         res = libertas_event_initcmd(priv, &response_buf, &pcmdnode, &pcmdptr);
1226         if (res < 0) {
1227                 free_page(addr);
1228                 return res;
1229         }
1230
1231         event = &pcmdptr->params.subscribe_event;
1232         event->action = cpu_to_le16(cmd_act_get);
1233         pcmdptr->size = cpu_to_le16(sizeof(*event) + S_DS_GEN);
1234         libertas_queue_cmd(adapter, pcmdnode, 1);
1235         wake_up_interruptible(&priv->mainthread.waitq);
1236
1237         /* Sleep until response is generated by FW */
1238         wait_event_interruptible(pcmdnode->cmdwait_q,
1239                                  pcmdnode->cmdwaitqwoken);
1240
1241         pcmdptr = response_buf;
1242
1243         if (pcmdptr->result) {
1244                 lbs_pr_err("%s: fail, result=%d\n", __func__,
1245                            le16_to_cpu(pcmdptr->result));
1246                 kfree(response_buf);
1247                 free_page(addr);
1248                 return 0;
1249         }
1250
1251         if (pcmdptr->command != cpu_to_le16(cmd_ret_802_11_subscribe_event)) {
1252                 lbs_pr_err("command response incorrect!\n");
1253                 kfree(response_buf);
1254                 free_page(addr);
1255                 return 0;
1256         }
1257
1258         cmd_len = S_DS_GEN + sizeof(struct cmd_ds_802_11_subscribe_event);
1259         event = (void *)(response_buf + S_DS_GEN);
1260         while (cmd_len < le16_to_cpu(pcmdptr->size)) {
1261                 struct mrvlietypesheader *header = (void *)(response_buf + cmd_len);
1262                 switch (header->type) {
1263                 struct mrvlietypes_snrthreshold *HighSnr;
1264                 case __constant_cpu_to_le16(TLV_TYPE_SNR_HIGH):
1265                         HighSnr = (void *)(response_buf + cmd_len);
1266                         pos += snprintf(buf+pos, len-pos, "%d %d %d\n",
1267                                         HighSnr->snrvalue,
1268                                         HighSnr->snrfreq,
1269                                         (event->events & cpu_to_le16(0x0020))?1:0);
1270                 default:
1271                         cmd_len += sizeof(struct mrvlietypes_snrthreshold);
1272                         break;
1273                 }
1274         }
1275
1276         kfree(response_buf);
1277
1278         res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
1279         free_page(addr);
1280         return res;
1281 }
1282
1283 static ssize_t libertas_highsnr_write(struct file *file,
1284                                     const char __user *userbuf,
1285                                     size_t count, loff_t *ppos)
1286 {
1287         wlan_private *priv = file->private_data;
1288         wlan_adapter *adapter = priv->adapter;
1289         ssize_t res, buf_size;
1290         int value, freq, subscribed, cmd_len;
1291         struct cmd_ctrl_node *pcmdnode;
1292         struct cmd_ds_command *pcmdptr;
1293         struct cmd_ds_802_11_subscribe_event *event;
1294         struct mrvlietypes_snrthreshold *snr_threshold;
1295         void *response_buf;
1296         u16 event_bitmap;
1297         u8 *ptr;
1298         unsigned long addr = get_zeroed_page(GFP_KERNEL);
1299         char *buf = (char *)addr;
1300
1301         buf_size = min(count, len - 1);
1302         if (copy_from_user(buf, userbuf, buf_size)) {
1303                 res = -EFAULT;
1304                 goto out_unlock;
1305         }
1306         res = sscanf(buf, "%d %d %d", &value, &freq, &subscribed);
1307         if (res != 3) {
1308                 res = -EFAULT;
1309                 goto out_unlock;
1310         }
1311
1312         event_bitmap = libertas_get_events_bitmap(priv);
1313
1314         res = libertas_event_initcmd(priv, &response_buf, &pcmdnode, &pcmdptr);
1315         if (res < 0)
1316                 goto out_unlock;
1317
1318         event = &pcmdptr->params.subscribe_event;
1319         event->action = cpu_to_le16(cmd_act_set);
1320         pcmdptr->size = cpu_to_le16(S_DS_GEN +
1321                 sizeof(struct cmd_ds_802_11_subscribe_event) +
1322                 sizeof(struct mrvlietypes_snrthreshold));
1323         cmd_len = S_DS_GEN + sizeof(struct cmd_ds_802_11_subscribe_event);
1324         ptr = (u8*) pcmdptr+cmd_len;
1325         snr_threshold = (struct mrvlietypes_snrthreshold *)(ptr);
1326         snr_threshold->header.type = cpu_to_le16(TLV_TYPE_SNR_HIGH);
1327         snr_threshold->header.len = cpu_to_le16(2);
1328         snr_threshold->snrvalue = value;
1329         snr_threshold->snrfreq = freq;
1330         event_bitmap |= subscribed ? 0x0020 : 0x0;
1331         event->events = cpu_to_le16(event_bitmap);
1332
1333         libertas_queue_cmd(adapter, pcmdnode, 1);
1334         wake_up_interruptible(&priv->mainthread.waitq);
1335
1336         /* Sleep until response is generated by FW */
1337         wait_event_interruptible(pcmdnode->cmdwait_q,
1338                                  pcmdnode->cmdwaitqwoken);
1339
1340         pcmdptr = response_buf;
1341
1342         if (pcmdptr->result) {
1343                 lbs_pr_err("%s: fail, result=%d\n", __func__,
1344                            le16_to_cpu(pcmdptr->result));
1345                 kfree(response_buf);
1346                 free_page(addr);
1347                 return 0;
1348         }
1349
1350         if (pcmdptr->command != cpu_to_le16(cmd_ret_802_11_subscribe_event)) {
1351                 lbs_pr_err("command response incorrect!\n");
1352                 kfree(response_buf);
1353                 free_page(addr);
1354                 return 0;
1355         }
1356
1357         res = count;
1358 out_unlock:
1359         free_page(addr);
1360         return res;
1361 }
1362
1363 static ssize_t libertas_rdmac_read(struct file *file, char __user *userbuf,
1364                                   size_t count, loff_t *ppos)
1365 {
1366         wlan_private *priv = file->private_data;
1367         wlan_adapter *adapter = priv->adapter;
1368         struct wlan_offset_value offval;
1369         ssize_t pos = 0;
1370         int ret;
1371         unsigned long addr = get_zeroed_page(GFP_KERNEL);
1372         char *buf = (char *)addr;
1373
1374         offval.offset = priv->mac_offset;
1375         offval.value = 0;
1376
1377         ret = libertas_prepare_and_send_command(priv,
1378                                 cmd_mac_reg_access, 0,
1379                                 cmd_option_waitforrsp, 0, &offval);
1380         mdelay(10);
1381         pos += snprintf(buf+pos, len-pos, "MAC[0x%x] = 0x%08x\n",
1382                                 priv->mac_offset, adapter->offsetvalue.value);
1383
1384         ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
1385         free_page(addr);
1386         return ret;
1387 }
1388
1389 static ssize_t libertas_rdmac_write(struct file *file,
1390                                     const char __user *userbuf,
1391                                     size_t count, loff_t *ppos)
1392 {
1393         wlan_private *priv = file->private_data;
1394         ssize_t res, buf_size;
1395         unsigned long addr = get_zeroed_page(GFP_KERNEL);
1396         char *buf = (char *)addr;
1397
1398         buf_size = min(count, len - 1);
1399         if (copy_from_user(buf, userbuf, buf_size)) {
1400                 res = -EFAULT;
1401                 goto out_unlock;
1402         }
1403         priv->mac_offset = simple_strtoul((char *)buf, NULL, 16);
1404         res = count;
1405 out_unlock:
1406         free_page(addr);
1407         return res;
1408 }
1409
1410 static ssize_t libertas_wrmac_write(struct file *file,
1411                                     const char __user *userbuf,
1412                                     size_t count, loff_t *ppos)
1413 {
1414
1415         wlan_private *priv = file->private_data;
1416         ssize_t res, buf_size;
1417         u32 offset, value;
1418         struct wlan_offset_value offval;
1419         unsigned long addr = get_zeroed_page(GFP_KERNEL);
1420         char *buf = (char *)addr;
1421
1422         buf_size = min(count, len - 1);
1423         if (copy_from_user(buf, userbuf, buf_size)) {
1424                 res = -EFAULT;
1425                 goto out_unlock;
1426         }
1427         res = sscanf(buf, "%x %x", &offset, &value);
1428         if (res != 2) {
1429                 res = -EFAULT;
1430                 goto out_unlock;
1431         }
1432
1433         offval.offset = offset;
1434         offval.value = value;
1435         res = libertas_prepare_and_send_command(priv,
1436                                 cmd_mac_reg_access, 1,
1437                                 cmd_option_waitforrsp, 0, &offval);
1438         mdelay(10);
1439
1440         res = count;
1441 out_unlock:
1442         free_page(addr);
1443         return res;
1444 }
1445
1446 static ssize_t libertas_rdbbp_read(struct file *file, char __user *userbuf,
1447                                   size_t count, loff_t *ppos)
1448 {
1449         wlan_private *priv = file->private_data;
1450         wlan_adapter *adapter = priv->adapter;
1451         struct wlan_offset_value offval;
1452         ssize_t pos = 0;
1453         int ret;
1454         unsigned long addr = get_zeroed_page(GFP_KERNEL);
1455         char *buf = (char *)addr;
1456
1457         offval.offset = priv->bbp_offset;
1458         offval.value = 0;
1459
1460         ret = libertas_prepare_and_send_command(priv,
1461                                 cmd_bbp_reg_access, 0,
1462                                 cmd_option_waitforrsp, 0, &offval);
1463         mdelay(10);
1464         pos += snprintf(buf+pos, len-pos, "BBP[0x%x] = 0x%08x\n",
1465                                 priv->bbp_offset, adapter->offsetvalue.value);
1466
1467         ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
1468         free_page(addr);
1469
1470         return ret;
1471 }
1472
1473 static ssize_t libertas_rdbbp_write(struct file *file,
1474                                     const char __user *userbuf,
1475                                     size_t count, loff_t *ppos)
1476 {
1477         wlan_private *priv = file->private_data;
1478         ssize_t res, buf_size;
1479         unsigned long addr = get_zeroed_page(GFP_KERNEL);
1480         char *buf = (char *)addr;
1481
1482         buf_size = min(count, len - 1);
1483         if (copy_from_user(buf, userbuf, buf_size)) {
1484                 res = -EFAULT;
1485                 goto out_unlock;
1486         }
1487         priv->bbp_offset = simple_strtoul((char *)buf, NULL, 16);
1488         res = count;
1489 out_unlock:
1490         free_page(addr);
1491         return res;
1492 }
1493
1494 static ssize_t libertas_wrbbp_write(struct file *file,
1495                                     const char __user *userbuf,
1496                                     size_t count, loff_t *ppos)
1497 {
1498
1499         wlan_private *priv = file->private_data;
1500         ssize_t res, buf_size;
1501         u32 offset, value;
1502         struct wlan_offset_value offval;
1503         unsigned long addr = get_zeroed_page(GFP_KERNEL);
1504         char *buf = (char *)addr;
1505
1506         buf_size = min(count, len - 1);
1507         if (copy_from_user(buf, userbuf, buf_size)) {
1508                 res = -EFAULT;
1509                 goto out_unlock;
1510         }
1511         res = sscanf(buf, "%x %x", &offset, &value);
1512         if (res != 2) {
1513                 res = -EFAULT;
1514                 goto out_unlock;
1515         }
1516
1517         offval.offset = offset;
1518         offval.value = value;
1519         res = libertas_prepare_and_send_command(priv,
1520                                 cmd_bbp_reg_access, 1,
1521                                 cmd_option_waitforrsp, 0, &offval);
1522         mdelay(10);
1523
1524         res = count;
1525 out_unlock:
1526         free_page(addr);
1527         return res;
1528 }
1529
1530 static ssize_t libertas_rdrf_read(struct file *file, char __user *userbuf,
1531                                   size_t count, loff_t *ppos)
1532 {
1533         wlan_private *priv = file->private_data;
1534         wlan_adapter *adapter = priv->adapter;
1535         struct wlan_offset_value offval;
1536         ssize_t pos = 0;
1537         int ret;
1538         unsigned long addr = get_zeroed_page(GFP_KERNEL);
1539         char *buf = (char *)addr;
1540
1541         offval.offset = priv->rf_offset;
1542         offval.value = 0;
1543
1544         ret = libertas_prepare_and_send_command(priv,
1545                                 cmd_rf_reg_access, 0,
1546                                 cmd_option_waitforrsp, 0, &offval);
1547         mdelay(10);
1548         pos += snprintf(buf+pos, len-pos, "RF[0x%x] = 0x%08x\n",
1549                                 priv->rf_offset, adapter->offsetvalue.value);
1550
1551         ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
1552         free_page(addr);
1553
1554         return ret;
1555 }
1556
1557 static ssize_t libertas_rdrf_write(struct file *file,
1558                                     const char __user *userbuf,
1559                                     size_t count, loff_t *ppos)
1560 {
1561         wlan_private *priv = file->private_data;
1562         ssize_t res, buf_size;
1563         unsigned long addr = get_zeroed_page(GFP_KERNEL);
1564         char *buf = (char *)addr;
1565
1566         buf_size = min(count, len - 1);
1567         if (copy_from_user(buf, userbuf, buf_size)) {
1568                 res = -EFAULT;
1569                 goto out_unlock;
1570         }
1571         priv->rf_offset = simple_strtoul((char *)buf, NULL, 16);
1572         res = count;
1573 out_unlock:
1574         free_page(addr);
1575         return res;
1576 }
1577
1578 static ssize_t libertas_wrrf_write(struct file *file,
1579                                     const char __user *userbuf,
1580                                     size_t count, loff_t *ppos)
1581 {
1582
1583         wlan_private *priv = file->private_data;
1584         ssize_t res, buf_size;
1585         u32 offset, value;
1586         struct wlan_offset_value offval;
1587         unsigned long addr = get_zeroed_page(GFP_KERNEL);
1588         char *buf = (char *)addr;
1589
1590         buf_size = min(count, len - 1);
1591         if (copy_from_user(buf, userbuf, buf_size)) {
1592                 res = -EFAULT;
1593                 goto out_unlock;
1594         }
1595         res = sscanf(buf, "%x %x", &offset, &value);
1596         if (res != 2) {
1597                 res = -EFAULT;
1598                 goto out_unlock;
1599         }
1600
1601         offval.offset = offset;
1602         offval.value = value;
1603         res = libertas_prepare_and_send_command(priv,
1604                                 cmd_rf_reg_access, 1,
1605                                 cmd_option_waitforrsp, 0, &offval);
1606         mdelay(10);
1607
1608         res = count;
1609 out_unlock:
1610         free_page(addr);
1611         return res;
1612 }
1613
1614 #define FOPS(fread, fwrite) { \
1615         .owner = THIS_MODULE, \
1616         .open = open_file_generic, \
1617         .read = (fread), \
1618         .write = (fwrite), \
1619 }
1620
1621 struct libertas_debugfs_files {
1622         char *name;
1623         int perm;
1624         struct file_operations fops;
1625 };
1626
1627 static struct libertas_debugfs_files debugfs_files[] = {
1628         { "info", 0444, FOPS(libertas_dev_info, write_file_dummy), },
1629         { "getscantable", 0444, FOPS(libertas_getscantable,
1630                                         write_file_dummy), },
1631         { "sleepparams", 0644, FOPS(libertas_sleepparams_read,
1632                                 libertas_sleepparams_write), },
1633         { "extscan", 0600, FOPS(NULL, libertas_extscan), },
1634         { "setuserscan", 0600, FOPS(NULL, libertas_setuserscan), },
1635 };
1636
1637 static struct libertas_debugfs_files debugfs_events_files[] = {
1638         {"low_rssi", 0644, FOPS(libertas_lowrssi_read,
1639                                 libertas_lowrssi_write), },
1640         {"low_snr", 0644, FOPS(libertas_lowsnr_read,
1641                                 libertas_lowsnr_write), },
1642         {"failure_count", 0644, FOPS(libertas_failcount_read,
1643                                 libertas_failcount_write), },
1644         {"beacon_missed", 0644, FOPS(libertas_bcnmiss_read,
1645                                 libertas_bcnmiss_write), },
1646         {"high_rssi", 0644, FOPS(libertas_highrssi_read,
1647                                 libertas_highrssi_write), },
1648         {"high_snr", 0644, FOPS(libertas_highsnr_read,
1649                                 libertas_highsnr_write), },
1650 };
1651
1652 static struct libertas_debugfs_files debugfs_regs_files[] = {
1653         {"rdmac", 0644, FOPS(libertas_rdmac_read, libertas_rdmac_write), },
1654         {"wrmac", 0600, FOPS(NULL, libertas_wrmac_write), },
1655         {"rdbbp", 0644, FOPS(libertas_rdbbp_read, libertas_rdbbp_write), },
1656         {"wrbbp", 0600, FOPS(NULL, libertas_wrbbp_write), },
1657         {"rdrf", 0644, FOPS(libertas_rdrf_read, libertas_rdrf_write), },
1658         {"wrrf", 0600, FOPS(NULL, libertas_wrrf_write), },
1659 };
1660
1661 void libertas_debugfs_init(void)
1662 {
1663         if (!libertas_dir)
1664                 libertas_dir = debugfs_create_dir("libertas_wireless", NULL);
1665
1666         return;
1667 }
1668
1669 void libertas_debugfs_remove(void)
1670 {
1671         if (libertas_dir)
1672                  debugfs_remove(libertas_dir);
1673         return;
1674 }
1675
1676 void libertas_debugfs_init_one(wlan_private *priv, struct net_device *dev)
1677 {
1678         int i;
1679         struct libertas_debugfs_files *files;
1680         if (!libertas_dir)
1681                 goto exit;
1682
1683         priv->debugfs_dir = debugfs_create_dir(dev->name, libertas_dir);
1684         if (!priv->debugfs_dir)
1685                 goto exit;
1686
1687         for (i=0; i<ARRAY_SIZE(debugfs_files); i++) {
1688                 files = &debugfs_files[i];
1689                 priv->debugfs_files[i] = debugfs_create_file(files->name,
1690                                                              files->perm,
1691                                                              priv->debugfs_dir,
1692                                                              priv,
1693                                                              &files->fops);
1694         }
1695
1696         priv->events_dir = debugfs_create_dir("subscribed_events", priv->debugfs_dir);
1697         if (!priv->events_dir)
1698                 goto exit;
1699
1700         for (i=0; i<ARRAY_SIZE(debugfs_events_files); i++) {
1701                 files = &debugfs_events_files[i];
1702                 priv->debugfs_events_files[i] = debugfs_create_file(files->name,
1703                                                              files->perm,
1704                                                              priv->events_dir,
1705                                                              priv,
1706                                                              &files->fops);
1707         }
1708
1709         priv->regs_dir = debugfs_create_dir("registers", priv->debugfs_dir);
1710         if (!priv->regs_dir)
1711                 goto exit;
1712
1713         for (i=0; i<ARRAY_SIZE(debugfs_regs_files); i++) {
1714                 files = &debugfs_regs_files[i];
1715                 priv->debugfs_regs_files[i] = debugfs_create_file(files->name,
1716                                                              files->perm,
1717                                                              priv->regs_dir,
1718                                                              priv,
1719                                                              &files->fops);
1720         }
1721
1722 #ifdef PROC_DEBUG
1723         libertas_debug_init(priv, dev);
1724 #endif
1725 exit:
1726         return;
1727 }
1728
1729 void libertas_debugfs_remove_one(wlan_private *priv)
1730 {
1731         int i;
1732
1733         for(i=0; i<ARRAY_SIZE(debugfs_regs_files); i++)
1734                 debugfs_remove(priv->debugfs_regs_files[i]);
1735
1736         debugfs_remove(priv->regs_dir);
1737
1738         for(i=0; i<ARRAY_SIZE(debugfs_events_files); i++)
1739                 debugfs_remove(priv->debugfs_events_files[i]);
1740
1741         debugfs_remove(priv->events_dir);
1742 #ifdef PROC_DEBUG
1743         debugfs_remove(priv->debugfs_debug);
1744 #endif
1745         for(i=0; i<ARRAY_SIZE(debugfs_files); i++)
1746                 debugfs_remove(priv->debugfs_files[i]);
1747         debugfs_remove(priv->debugfs_dir);
1748 }
1749
1750
1751
1752 /* debug entry */
1753
1754 #ifdef PROC_DEBUG
1755
1756 #define item_size(n)    (FIELD_SIZEOF(wlan_adapter, n))
1757 #define item_addr(n)    (offsetof(wlan_adapter, n))
1758
1759
1760 struct debug_data {
1761         char name[32];
1762         u32 size;
1763         size_t addr;
1764 };
1765
1766 /* To debug any member of wlan_adapter, simply add one line here.
1767  */
1768 static struct debug_data items[] = {
1769         {"intcounter", item_size(intcounter), item_addr(intcounter)},
1770         {"psmode", item_size(psmode), item_addr(psmode)},
1771         {"psstate", item_size(psstate), item_addr(psstate)},
1772 };
1773
1774 static int num_of_items = ARRAY_SIZE(items);
1775
1776 /**
1777  *  @brief proc read function
1778  *
1779  *  @param page    pointer to buffer
1780  *  @param s       read data starting position
1781  *  @param off     offset
1782  *  @param cnt     counter
1783  *  @param eof     end of file flag
1784  *  @param data    data to output
1785  *  @return        number of output data
1786  */
1787 static ssize_t wlan_debugfs_read(struct file *file, char __user *userbuf,
1788                         size_t count, loff_t *ppos)
1789 {
1790         int val = 0;
1791         size_t pos = 0;
1792         ssize_t res;
1793         char *p;
1794         int i;
1795         struct debug_data *d;
1796         unsigned long addr = get_zeroed_page(GFP_KERNEL);
1797         char *buf = (char *)addr;
1798
1799         p = buf;
1800
1801         d = (struct debug_data *)file->private_data;
1802
1803         for (i = 0; i < num_of_items; i++) {
1804                 if (d[i].size == 1)
1805                         val = *((u8 *) d[i].addr);
1806                 else if (d[i].size == 2)
1807                         val = *((u16 *) d[i].addr);
1808                 else if (d[i].size == 4)
1809                         val = *((u32 *) d[i].addr);
1810                 else if (d[i].size == 8)
1811                         val = *((u64 *) d[i].addr);
1812
1813                 pos += sprintf(p + pos, "%s=%d\n", d[i].name, val);
1814         }
1815
1816         res = simple_read_from_buffer(userbuf, count, ppos, p, pos);
1817
1818         free_page(addr);
1819         return res;
1820 }
1821
1822 /**
1823  *  @brief proc write function
1824  *
1825  *  @param f       file pointer
1826  *  @param buf     pointer to data buffer
1827  *  @param cnt     data number to write
1828  *  @param data    data to write
1829  *  @return        number of data
1830  */
1831 static ssize_t wlan_debugfs_write(struct file *f, const char __user *buf,
1832                             size_t cnt, loff_t *ppos)
1833 {
1834         int r, i;
1835         char *pdata;
1836         char *p;
1837         char *p0;
1838         char *p1;
1839         char *p2;
1840         struct debug_data *d = (struct debug_data *)f->private_data;
1841
1842         pdata = (char *)kmalloc(cnt, GFP_KERNEL);
1843         if (pdata == NULL)
1844                 return 0;
1845
1846         if (copy_from_user(pdata, buf, cnt)) {
1847                 lbs_deb_debugfs("Copy from user failed\n");
1848                 kfree(pdata);
1849                 return 0;
1850         }
1851
1852         p0 = pdata;
1853         for (i = 0; i < num_of_items; i++) {
1854                 do {
1855                         p = strstr(p0, d[i].name);
1856                         if (p == NULL)
1857                                 break;
1858                         p1 = strchr(p, '\n');
1859                         if (p1 == NULL)
1860                                 break;
1861                         p0 = p1++;
1862                         p2 = strchr(p, '=');
1863                         if (!p2)
1864                                 break;
1865                         p2++;
1866                         r = simple_strtoul(p2, NULL, 0);
1867                         if (d[i].size == 1)
1868                                 *((u8 *) d[i].addr) = (u8) r;
1869                         else if (d[i].size == 2)
1870                                 *((u16 *) d[i].addr) = (u16) r;
1871                         else if (d[i].size == 4)
1872                                 *((u32 *) d[i].addr) = (u32) r;
1873                         else if (d[i].size == 8)
1874                                 *((u64 *) d[i].addr) = (u64) r;
1875                         break;
1876                 } while (1);
1877         }
1878         kfree(pdata);
1879
1880         return (ssize_t)cnt;
1881 }
1882
1883 static struct file_operations libertas_debug_fops = {
1884         .owner = THIS_MODULE,
1885         .open = open_file_generic,
1886         .write = wlan_debugfs_write,
1887         .read = wlan_debugfs_read,
1888 };
1889
1890 /**
1891  *  @brief create debug proc file
1892  *
1893  *  @param priv    pointer wlan_private
1894  *  @param dev     pointer net_device
1895  *  @return        N/A
1896  */
1897 static void libertas_debug_init(wlan_private * priv, struct net_device *dev)
1898 {
1899         int i;
1900
1901         if (!priv->debugfs_dir)
1902                 return;
1903
1904         for (i = 0; i < num_of_items; i++)
1905                 items[i].addr += (size_t) priv->adapter;
1906
1907         priv->debugfs_debug = debugfs_create_file("debug", 0644,
1908                                                   priv->debugfs_dir, &items[0],
1909                                                   &libertas_debug_fops);
1910 }
1911 #endif
1912