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 <linux/string.h>
   7 #include <net/iw_handler.h>
   8 #include <net/lib80211.h>
   9
  10 #include "dev.h"
  11 #include "decl.h"
  12 #include "host.h"
  13 #include "debugfs.h"
  14 #include "cmd.h"
  15
  16 static struct dentry *lbs_dir;
  17 static char *szStates[] = {
  18         "Connected",
  19         "Disconnected"
  20 };
  21
  22 #ifdef PROC_DEBUG
  23 static void lbs_debug_init(struct lbs_private *priv);
  24 #endif
  25
  26 static int open_file_generic(struct inode *inode, struct file *file)
  27 {
  28         file->private_data = inode->i_private;
  29         return 0;
  30 }
  31
  32 static ssize_t write_file_dummy(struct file *file, const char __user *buf,
  33                                 size_t count, loff_t *ppos)
  34 {
  35         return -EINVAL;
  36 }
  37
  38 static const size_t len = PAGE_SIZE;
  39
  40 static ssize_t lbs_dev_info(struct file *file, char __user *userbuf,
  41                                   size_t count, loff_t *ppos)
  42 {
  43         struct lbs_private *priv = file->private_data;
  44         size_t pos = 0;
  45         unsigned long addr = get_zeroed_page(GFP_KERNEL);
  46         char *buf = (char *)addr;
  47         ssize_t res;
  48         if (!buf)
  49                 return -ENOMEM;
  50
  51         pos += snprintf(buf+pos, len-pos, "state = %s\n",
  52                                 szStates[priv->connect_status]);
  53         pos += snprintf(buf+pos, len-pos, "region_code = %02x\n",
  54                                 (u32) priv->regioncode);
  55
  56         res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
  57
  58         free_page(addr);
  59         return res;
  60 }
  61
  62
  63 static ssize_t lbs_getscantable(struct file *file, char __user *userbuf,
  64                                   size_t count, loff_t *ppos)
  65 {
  66         struct lbs_private *priv = file->private_data;
  67         size_t pos = 0;
  68         int numscansdone = 0, res;
  69         unsigned long addr = get_zeroed_page(GFP_KERNEL);
  70         char *buf = (char *)addr;
  71         DECLARE_SSID_BUF(ssid);
  72         struct bss_descriptor * iter_bss;
  73         if (!buf)
  74                 return -ENOMEM;
  75
  76         pos += snprintf(buf+pos, len-pos,
  77                 "# | ch  | rssi |       bssid       |   cap    | Qual | SSID \n");
  78
  79         mutex_lock(&priv->lock);
  80         list_for_each_entry (iter_bss, &priv->network_list, list) {
  81                 u16 ibss = (iter_bss->capability & WLAN_CAPABILITY_IBSS);
  82                 u16 privacy = (iter_bss->capability & WLAN_CAPABILITY_PRIVACY);
  83                 u16 spectrum_mgmt = (iter_bss->capability & WLAN_CAPABILITY_SPECTRUM_MGMT);
  84
  85                 pos += snprintf(buf+pos, len-pos, "%02u| %03d | %04d | %pM |",
  86                         numscansdone, iter_bss->channel, iter_bss->rssi,
  87                         iter_bss->bssid);
  88                 pos += snprintf(buf+pos, len-pos, " %04x-", iter_bss->capability);
  89                 pos += snprintf(buf+pos, len-pos, "%c%c%c |",
  90                                 ibss ? 'A' : 'I', privacy ? 'P' : ' ',
  91                                 spectrum_mgmt ? 'S' : ' ');
  92                 pos += snprintf(buf+pos, len-pos, " %04d |", SCAN_RSSI(iter_bss->rssi));
  93                 pos += snprintf(buf+pos, len-pos, " %s\n",
  94                                 print_ssid(ssid, iter_bss->ssid,
  95                                            iter_bss->ssid_len));
  96
  97                 numscansdone++;
  98         }
  99         mutex_unlock(&priv->lock);
 100
 101         res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
 102
 103         free_page(addr);
 104         return res;
 105 }
 106
 107 static ssize_t lbs_sleepparams_write(struct file *file,
 108                                 const char __user *user_buf, size_t count,
 109                                 loff_t *ppos)
 110 {
 111         struct lbs_private *priv = file->private_data;
 112         ssize_t buf_size, ret;
 113         struct sleep_params sp;
 114         int p1, p2, p3, p4, p5, p6;
 115         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 116         char *buf = (char *)addr;
 117         if (!buf)
 118                 return -ENOMEM;
 119
 120         if (!lbs_is_cmd_allowed(priv)) {
 121                 ret = -EBUSY;
 122                 goto out_unlock;
 123         }
 124
 125         buf_size = min(count, len - 1);
 126         if (copy_from_user(buf, user_buf, buf_size)) {
 127                 ret = -EFAULT;
 128                 goto out_unlock;
 129         }
 130         ret = sscanf(buf, "%d %d %d %d %d %d", &p1, &p2, &p3, &p4, &p5, &p6);
 131         if (ret != 6) {
 132                 ret = -EINVAL;
 133                 goto out_unlock;
 134         }
 135         sp.sp_error = p1;
 136         sp.sp_offset = p2;
 137         sp.sp_stabletime = p3;
 138         sp.sp_calcontrol = p4;
 139         sp.sp_extsleepclk = p5;
 140         sp.sp_reserved = p6;
 141
 142         ret = lbs_cmd_802_11_sleep_params(priv, CMD_ACT_SET, &sp);
 143         if (!ret)
 144                 ret = count;
 145         else if (ret > 0)
 146                 ret = -EINVAL;
 147
 148 out_unlock:
 149         free_page(addr);
 150         return ret;
 151 }
 152
 153 static ssize_t lbs_sleepparams_read(struct file *file, char __user *userbuf,
 154                                   size_t count, loff_t *ppos)
 155 {
 156         struct lbs_private *priv = file->private_data;
 157         ssize_t ret;
 158         size_t pos = 0;
 159         struct sleep_params sp;
 160         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 161         char *buf = (char *)addr;
 162         if (!buf)
 163                 return -ENOMEM;
 164
 165         if (!lbs_is_cmd_allowed(priv)) {
 166                 ret = -EBUSY;
 167                 goto out_unlock;
 168         }
 169
 170         ret = lbs_cmd_802_11_sleep_params(priv, CMD_ACT_GET, &sp);
 171         if (ret)
 172                 goto out_unlock;
 173
 174         pos += snprintf(buf, len, "%d %d %d %d %d %d\n", sp.sp_error,
 175                         sp.sp_offset, sp.sp_stabletime,
 176                         sp.sp_calcontrol, sp.sp_extsleepclk,
 177                         sp.sp_reserved);
 178
 179         ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
 180
 181 out_unlock:
 182         free_page(addr);
 183         return ret;
 184 }
 185
 186 /*
 187  * When calling CMD_802_11_SUBSCRIBE_EVENT with CMD_ACT_GET, me might
 188  * get a bunch of vendor-specific TLVs (a.k.a. IEs) back from the
 189  * firmware. Here's an example:
 190  *      04 01 02 00 00 00 05 01 02 00 00 00 06 01 02 00
 191  *      00 00 07 01 02 00 3c 00 00 00 00 00 00 00 03 03
 192  *      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 193  *
 194  * The 04 01 is the TLV type (here TLV_TYPE_RSSI_LOW), 02 00 is the length,
 195  * 00 00 are the data bytes of this TLV. For this TLV, their meaning is
 196  * defined in mrvlietypes_thresholds
 197  *
 198  * This function searches in this TLV data chunk for a given TLV type
 199  * and returns a pointer to the first data byte of the TLV, or to NULL
 200  * if the TLV hasn't been found.
 201  */
 202 static void *lbs_tlv_find(uint16_t tlv_type, const uint8_t *tlv, uint16_t size)
 203 {
 204         struct mrvl_ie_header *tlv_h;
 205         uint16_t length;
 206         ssize_t pos = 0;
 207
 208         while (pos < size) {
 209                 tlv_h = (struct mrvl_ie_header *) tlv;
 210                 if (!tlv_h->len)
 211                         return NULL;
 212                 if (tlv_h->type == cpu_to_le16(tlv_type))
 213                         return tlv_h;
 214                 length = le16_to_cpu(tlv_h->len) + sizeof(*tlv_h);
 215                 pos += length;
 216                 tlv += length;
 217         }
 218         return NULL;
 219 }
 220
 221
 222 static ssize_t lbs_threshold_read(uint16_t tlv_type, uint16_t event_mask,
 223                                   struct file *file, char __user *userbuf,
 224                                   size_t count, loff_t *ppos)
 225 {
 226         struct cmd_ds_802_11_subscribe_event *subscribed;
 227         struct mrvl_ie_thresholds *got;
 228         struct lbs_private *priv = file->private_data;
 229         ssize_t ret = 0;
 230         size_t pos = 0;
 231         char *buf;
 232         u8 value;
 233         u8 freq;
 234         int events = 0;
 235
 236         if (!lbs_is_cmd_allowed(priv))
 237                 return -EBUSY;
 238
 239         buf = (char *)get_zeroed_page(GFP_KERNEL);
 240         if (!buf)
 241                 return -ENOMEM;
 242
 243         subscribed = kzalloc(sizeof(*subscribed), GFP_KERNEL);
 244         if (!subscribed) {
 245                 ret = -ENOMEM;
 246                 goto out_page;
 247         }
 248
 249         subscribed->hdr.size = cpu_to_le16(sizeof(*subscribed));
 250         subscribed->action = cpu_to_le16(CMD_ACT_GET);
 251
 252         ret = lbs_cmd_with_response(priv, CMD_802_11_SUBSCRIBE_EVENT, subscribed);
 253         if (ret)
 254                 goto out_cmd;
 255
 256         got = lbs_tlv_find(tlv_type, subscribed->tlv, sizeof(subscribed->tlv));
 257         if (got) {
 258                 value = got->value;
 259                 freq  = got->freq;
 260                 events = le16_to_cpu(subscribed->events);
 261
 262                 pos += snprintf(buf, len, "%d %d %d\n", value, freq,
 263                                 !!(events & event_mask));
 264         }
 265
 266         ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
 267
 268  out_cmd:
 269         kfree(subscribed);
 270
 271  out_page:
 272         free_page((unsigned long)buf);
 273         return ret;
 274 }
 275
 276
 277 static ssize_t lbs_threshold_write(uint16_t tlv_type, uint16_t event_mask,
 278                                    struct file *file,
 279                                    const char __user *userbuf, size_t count,
 280                                    loff_t *ppos)
 281 {
 282         struct cmd_ds_802_11_subscribe_event *events;
 283         struct mrvl_ie_thresholds *tlv;
 284         struct lbs_private *priv = file->private_data;
 285         ssize_t buf_size;
 286         int value, freq, new_mask;
 287         uint16_t curr_mask;
 288         char *buf;
 289         int ret;
 290
 291         if (!lbs_is_cmd_allowed(priv))
 292                 return -EBUSY;
 293
 294         buf = (char *)get_zeroed_page(GFP_KERNEL);
 295         if (!buf)
 296                 return -ENOMEM;
 297
 298         buf_size = min(count, len - 1);
 299         if (copy_from_user(buf, userbuf, buf_size)) {
 300                 ret = -EFAULT;
 301                 goto out_page;
 302         }
 303         ret = sscanf(buf, "%d %d %d", &value, &freq, &new_mask);
 304         if (ret != 3) {
 305                 ret = -EINVAL;
 306                 goto out_page;
 307         }
 308         events = kzalloc(sizeof(*events), GFP_KERNEL);
 309         if (!events) {
 310                 ret = -ENOMEM;
 311                 goto out_page;
 312         }
 313
 314         events->hdr.size = cpu_to_le16(sizeof(*events));
 315         events->action = cpu_to_le16(CMD_ACT_GET);
 316
 317         ret = lbs_cmd_with_response(priv, CMD_802_11_SUBSCRIBE_EVENT, events);
 318         if (ret)
 319                 goto out_events;
 320
 321         curr_mask = le16_to_cpu(events->events);
 322
 323         if (new_mask)
 324                 new_mask = curr_mask | event_mask;
 325         else
 326                 new_mask = curr_mask & ~event_mask;
 327
 328         /* Now everything is set and we can send stuff down to the firmware */
 329
 330         tlv = (void *)events->tlv;
 331
 332         events->action = cpu_to_le16(CMD_ACT_SET);
 333         events->events = cpu_to_le16(new_mask);
 334         tlv->header.type = cpu_to_le16(tlv_type);
 335         tlv->header.len = cpu_to_le16(sizeof(*tlv) - sizeof(tlv->header));
 336         tlv->value = value;
 337         if (tlv_type != TLV_TYPE_BCNMISS)
 338                 tlv->freq = freq;
 339
 340         /* The command header, the action, the event mask, and one TLV */
 341         events->hdr.size = cpu_to_le16(sizeof(events->hdr) + 4 + sizeof(*tlv));
 342
 343         ret = lbs_cmd_with_response(priv, CMD_802_11_SUBSCRIBE_EVENT, events);
 344
 345         if (!ret)
 346                 ret = count;
 347  out_events:
 348         kfree(events);
 349  out_page:
 350         free_page((unsigned long)buf);
 351         return ret;
 352 }
 353
 354
 355 static ssize_t lbs_lowrssi_read(struct file *file, char __user *userbuf,
 356                                 size_t count, loff_t *ppos)
 357 {
 358         return lbs_threshold_read(TLV_TYPE_RSSI_LOW, CMD_SUBSCRIBE_RSSI_LOW,
 359                                   file, userbuf, count, ppos);
 360 }
 361
 362
 363 static ssize_t lbs_lowrssi_write(struct file *file, const char __user *userbuf,
 364                                  size_t count, loff_t *ppos)
 365 {
 366         return lbs_threshold_write(TLV_TYPE_RSSI_LOW, CMD_SUBSCRIBE_RSSI_LOW,
 367                                    file, userbuf, count, ppos);
 368 }
 369
 370
 371 static ssize_t lbs_lowsnr_read(struct file *file, char __user *userbuf,
 372                                size_t count, loff_t *ppos)
 373 {
 374         return lbs_threshold_read(TLV_TYPE_SNR_LOW, CMD_SUBSCRIBE_SNR_LOW,
 375                                   file, userbuf, count, ppos);
 376 }
 377
 378
 379 static ssize_t lbs_lowsnr_write(struct file *file, const char __user *userbuf,
 380                                 size_t count, loff_t *ppos)
 381 {
 382         return lbs_threshold_write(TLV_TYPE_SNR_LOW, CMD_SUBSCRIBE_SNR_LOW,
 383                                    file, userbuf, count, ppos);
 384 }
 385
 386
 387 static ssize_t lbs_failcount_read(struct file *file, char __user *userbuf,
 388                                   size_t count, loff_t *ppos)
 389 {
 390         return lbs_threshold_read(TLV_TYPE_FAILCOUNT, CMD_SUBSCRIBE_FAILCOUNT,
 391                                   file, userbuf, count, ppos);
 392 }
 393
 394
 395 static ssize_t lbs_failcount_write(struct file *file, const char __user *userbuf,
 396                                    size_t count, loff_t *ppos)
 397 {
 398         return lbs_threshold_write(TLV_TYPE_FAILCOUNT, CMD_SUBSCRIBE_FAILCOUNT,
 399                                    file, userbuf, count, ppos);
 400 }
 401
 402
 403 static ssize_t lbs_highrssi_read(struct file *file, char __user *userbuf,
 404                                  size_t count, loff_t *ppos)
 405 {
 406         return lbs_threshold_read(TLV_TYPE_RSSI_HIGH, CMD_SUBSCRIBE_RSSI_HIGH,
 407                                   file, userbuf, count, ppos);
 408 }
 409
 410
 411 static ssize_t lbs_highrssi_write(struct file *file, const char __user *userbuf,
 412                                   size_t count, loff_t *ppos)
 413 {
 414         return lbs_threshold_write(TLV_TYPE_RSSI_HIGH, CMD_SUBSCRIBE_RSSI_HIGH,
 415                                    file, userbuf, count, ppos);
 416 }
 417
 418
 419 static ssize_t lbs_highsnr_read(struct file *file, char __user *userbuf,
 420                                 size_t count, loff_t *ppos)
 421 {
 422         return lbs_threshold_read(TLV_TYPE_SNR_HIGH, CMD_SUBSCRIBE_SNR_HIGH,
 423                                   file, userbuf, count, ppos);
 424 }
 425
 426
 427 static ssize_t lbs_highsnr_write(struct file *file, const char __user *userbuf,
 428                                  size_t count, loff_t *ppos)
 429 {
 430         return lbs_threshold_write(TLV_TYPE_SNR_HIGH, CMD_SUBSCRIBE_SNR_HIGH,
 431                                    file, userbuf, count, ppos);
 432 }
 433
 434 static ssize_t lbs_bcnmiss_read(struct file *file, char __user *userbuf,
 435                                 size_t count, loff_t *ppos)
 436 {
 437         return lbs_threshold_read(TLV_TYPE_BCNMISS, CMD_SUBSCRIBE_BCNMISS,
 438                                   file, userbuf, count, ppos);
 439 }
 440
 441
 442 static ssize_t lbs_bcnmiss_write(struct file *file, const char __user *userbuf,
 443                                  size_t count, loff_t *ppos)
 444 {
 445         return lbs_threshold_write(TLV_TYPE_BCNMISS, CMD_SUBSCRIBE_BCNMISS,
 446                                    file, userbuf, count, ppos);
 447 }
 448
 449
 450
 451 static ssize_t lbs_rdmac_read(struct file *file, char __user *userbuf,
 452                                   size_t count, loff_t *ppos)
 453 {
 454         struct lbs_private *priv = file->private_data;
 455         struct lbs_offset_value offval;
 456         ssize_t pos = 0;
 457         int ret;
 458         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 459         char *buf = (char *)addr;
 460         if (!buf)
 461                 return -ENOMEM;
 462
 463         if (!lbs_is_cmd_allowed(priv)) {
 464                 free_page(addr);
 465                 return -EBUSY;
 466         }
 467
 468         offval.offset = priv->mac_offset;
 469         offval.value = 0;
 470
 471         ret = lbs_prepare_and_send_command(priv,
 472                                 CMD_MAC_REG_ACCESS, 0,
 473                                 CMD_OPTION_WAITFORRSP, 0, &offval);
 474         mdelay(10);
 475         pos += snprintf(buf+pos, len-pos, "MAC[0x%x] = 0x%08x\n",
 476                                 priv->mac_offset, priv->offsetvalue.value);
 477
 478         ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
 479         free_page(addr);
 480         return ret;
 481 }
 482
 483 static ssize_t lbs_rdmac_write(struct file *file,
 484                                     const char __user *userbuf,
 485                                     size_t count, loff_t *ppos)
 486 {
 487         struct lbs_private *priv = file->private_data;
 488         ssize_t res, buf_size;
 489         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 490         char *buf = (char *)addr;
 491         if (!buf)
 492                 return -ENOMEM;
 493
 494         buf_size = min(count, len - 1);
 495         if (copy_from_user(buf, userbuf, buf_size)) {
 496                 res = -EFAULT;
 497                 goto out_unlock;
 498         }
 499         priv->mac_offset = simple_strtoul((char *)buf, NULL, 16);
 500         res = count;
 501 out_unlock:
 502         free_page(addr);
 503         return res;
 504 }
 505
 506 static ssize_t lbs_wrmac_write(struct file *file,
 507                                     const char __user *userbuf,
 508                                     size_t count, loff_t *ppos)
 509 {
 510
 511         struct lbs_private *priv = file->private_data;
 512         ssize_t res, buf_size;
 513         u32 offset, value;
 514         struct lbs_offset_value offval;
 515         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 516         char *buf = (char *)addr;
 517         if (!buf)
 518                 return -ENOMEM;
 519
 520         if (!lbs_is_cmd_allowed(priv)) {
 521                 res = -EBUSY;
 522                 goto out_unlock;
 523         }
 524
 525         buf_size = min(count, len - 1);
 526         if (copy_from_user(buf, userbuf, buf_size)) {
 527                 res = -EFAULT;
 528                 goto out_unlock;
 529         }
 530         res = sscanf(buf, "%x %x", &offset, &value);
 531         if (res != 2) {
 532                 res = -EFAULT;
 533                 goto out_unlock;
 534         }
 535
 536         offval.offset = offset;
 537         offval.value = value;
 538         res = lbs_prepare_and_send_command(priv,
 539                                 CMD_MAC_REG_ACCESS, 1,
 540                                 CMD_OPTION_WAITFORRSP, 0, &offval);
 541         mdelay(10);
 542
 543         res = count;
 544 out_unlock:
 545         free_page(addr);
 546         return res;
 547 }
 548
 549 static ssize_t lbs_rdbbp_read(struct file *file, char __user *userbuf,
 550                                   size_t count, loff_t *ppos)
 551 {
 552         struct lbs_private *priv = file->private_data;
 553         struct lbs_offset_value offval;
 554         ssize_t pos = 0;
 555         int ret;
 556         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 557         char *buf = (char *)addr;
 558         if (!buf)
 559                 return -ENOMEM;
 560
 561         if (!lbs_is_cmd_allowed(priv)) {
 562                 free_page(addr);
 563                 return -EBUSY;
 564         }
 565
 566         offval.offset = priv->bbp_offset;
 567         offval.value = 0;
 568
 569         ret = lbs_prepare_and_send_command(priv,
 570                                 CMD_BBP_REG_ACCESS, 0,
 571                                 CMD_OPTION_WAITFORRSP, 0, &offval);
 572         mdelay(10);
 573         pos += snprintf(buf+pos, len-pos, "BBP[0x%x] = 0x%08x\n",
 574                                 priv->bbp_offset, priv->offsetvalue.value);
 575
 576         ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
 577         free_page(addr);
 578
 579         return ret;
 580 }
 581
 582 static ssize_t lbs_rdbbp_write(struct file *file,
 583                                     const char __user *userbuf,
 584                                     size_t count, loff_t *ppos)
 585 {
 586         struct lbs_private *priv = file->private_data;
 587         ssize_t res, buf_size;
 588         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 589         char *buf = (char *)addr;
 590         if (!buf)
 591                 return -ENOMEM;
 592
 593         buf_size = min(count, len - 1);
 594         if (copy_from_user(buf, userbuf, buf_size)) {
 595                 res = -EFAULT;
 596                 goto out_unlock;
 597         }
 598         priv->bbp_offset = simple_strtoul((char *)buf, NULL, 16);
 599         res = count;
 600 out_unlock:
 601         free_page(addr);
 602         return res;
 603 }
 604
 605 static ssize_t lbs_wrbbp_write(struct file *file,
 606                                     const char __user *userbuf,
 607                                     size_t count, loff_t *ppos)
 608 {
 609
 610         struct lbs_private *priv = file->private_data;
 611         ssize_t res, buf_size;
 612         u32 offset, value;
 613         struct lbs_offset_value offval;
 614         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 615         char *buf = (char *)addr;
 616         if (!buf)
 617                 return -ENOMEM;
 618
 619         if (!lbs_is_cmd_allowed(priv)) {
 620                 res = -EBUSY;
 621                 goto out_unlock;
 622         }
 623
 624         buf_size = min(count, len - 1);
 625         if (copy_from_user(buf, userbuf, buf_size)) {
 626                 res = -EFAULT;
 627                 goto out_unlock;
 628         }
 629         res = sscanf(buf, "%x %x", &offset, &value);
 630         if (res != 2) {
 631                 res = -EFAULT;
 632                 goto out_unlock;
 633         }
 634
 635         offval.offset = offset;
 636         offval.value = value;
 637         res = lbs_prepare_and_send_command(priv,
 638                                 CMD_BBP_REG_ACCESS, 1,
 639                                 CMD_OPTION_WAITFORRSP, 0, &offval);
 640         mdelay(10);
 641
 642         res = count;
 643 out_unlock:
 644         free_page(addr);
 645         return res;
 646 }
 647
 648 static ssize_t lbs_rdrf_read(struct file *file, char __user *userbuf,
 649                                   size_t count, loff_t *ppos)
 650 {
 651         struct lbs_private *priv = file->private_data;
 652         struct lbs_offset_value offval;
 653         ssize_t pos = 0;
 654         int ret;
 655         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 656         char *buf = (char *)addr;
 657         if (!buf)
 658                 return -ENOMEM;
 659
 660         if (!lbs_is_cmd_allowed(priv)) {
 661                 free_page(addr);
 662                 return -EBUSY;
 663         }
 664
 665         offval.offset = priv->rf_offset;
 666         offval.value = 0;
 667
 668         ret = lbs_prepare_and_send_command(priv,
 669                                 CMD_RF_REG_ACCESS, 0,
 670                                 CMD_OPTION_WAITFORRSP, 0, &offval);
 671         mdelay(10);
 672         pos += snprintf(buf+pos, len-pos, "RF[0x%x] = 0x%08x\n",
 673                                 priv->rf_offset, priv->offsetvalue.value);
 674
 675         ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
 676         free_page(addr);
 677
 678         return ret;
 679 }
 680
 681 static ssize_t lbs_rdrf_write(struct file *file,
 682                                     const char __user *userbuf,
 683                                     size_t count, loff_t *ppos)
 684 {
 685         struct lbs_private *priv = file->private_data;
 686         ssize_t res, buf_size;
 687         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 688         char *buf = (char *)addr;
 689         if (!buf)
 690                 return -ENOMEM;
 691
 692         buf_size = min(count, len - 1);
 693         if (copy_from_user(buf, userbuf, buf_size)) {
 694                 res = -EFAULT;
 695                 goto out_unlock;
 696         }
 697         priv->rf_offset = simple_strtoul(buf, NULL, 16);
 698         res = count;
 699 out_unlock:
 700         free_page(addr);
 701         return res;
 702 }
 703
 704 static ssize_t lbs_wrrf_write(struct file *file,
 705                                     const char __user *userbuf,
 706                                     size_t count, loff_t *ppos)
 707 {
 708
 709         struct lbs_private *priv = file->private_data;
 710         ssize_t res, buf_size;
 711         u32 offset, value;
 712         struct lbs_offset_value offval;
 713         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 714         char *buf = (char *)addr;
 715         if (!buf)
 716                 return -ENOMEM;
 717
 718         if (!lbs_is_cmd_allowed(priv)) {
 719                 res = -EBUSY;
 720                 goto out_unlock;
 721         }
 722
 723         buf_size = min(count, len - 1);
 724         if (copy_from_user(buf, userbuf, buf_size)) {
 725                 res = -EFAULT;
 726                 goto out_unlock;
 727         }
 728         res = sscanf(buf, "%x %x", &offset, &value);
 729         if (res != 2) {
 730                 res = -EFAULT;
 731                 goto out_unlock;
 732         }
 733
 734         offval.offset = offset;
 735         offval.value = value;
 736         res = lbs_prepare_and_send_command(priv,
 737                                 CMD_RF_REG_ACCESS, 1,
 738                                 CMD_OPTION_WAITFORRSP, 0, &offval);
 739         mdelay(10);
 740
 741         res = count;
 742 out_unlock:
 743         free_page(addr);
 744         return res;
 745 }
 746
 747 #define FOPS(fread, fwrite) { \
 748         .owner = THIS_MODULE, \
 749         .open = open_file_generic, \
 750         .read = (fread), \
 751         .write = (fwrite), \
 752 }
 753
 754 struct lbs_debugfs_files {
 755         const char *name;
 756         int perm;
 757         struct file_operations fops;
 758 };
 759
 760 static const struct lbs_debugfs_files debugfs_files[] = {
 761         { "info", 0444, FOPS(lbs_dev_info, write_file_dummy), },
 762         { "getscantable", 0444, FOPS(lbs_getscantable,
 763                                         write_file_dummy), },
 764         { "sleepparams", 0644, FOPS(lbs_sleepparams_read,
 765                                 lbs_sleepparams_write), },
 766 };
 767
 768 static const struct lbs_debugfs_files debugfs_events_files[] = {
 769         {"low_rssi", 0644, FOPS(lbs_lowrssi_read,
 770                                 lbs_lowrssi_write), },
 771         {"low_snr", 0644, FOPS(lbs_lowsnr_read,
 772                                 lbs_lowsnr_write), },
 773         {"failure_count", 0644, FOPS(lbs_failcount_read,
 774                                 lbs_failcount_write), },
 775         {"beacon_missed", 0644, FOPS(lbs_bcnmiss_read,
 776                                 lbs_bcnmiss_write), },
 777         {"high_rssi", 0644, FOPS(lbs_highrssi_read,
 778                                 lbs_highrssi_write), },
 779         {"high_snr", 0644, FOPS(lbs_highsnr_read,
 780                                 lbs_highsnr_write), },
 781 };
 782
 783 static const struct lbs_debugfs_files debugfs_regs_files[] = {
 784         {"rdmac", 0644, FOPS(lbs_rdmac_read, lbs_rdmac_write), },
 785         {"wrmac", 0600, FOPS(NULL, lbs_wrmac_write), },
 786         {"rdbbp", 0644, FOPS(lbs_rdbbp_read, lbs_rdbbp_write), },
 787         {"wrbbp", 0600, FOPS(NULL, lbs_wrbbp_write), },
 788         {"rdrf", 0644, FOPS(lbs_rdrf_read, lbs_rdrf_write), },
 789         {"wrrf", 0600, FOPS(NULL, lbs_wrrf_write), },
 790 };
 791
 792 void lbs_debugfs_init(void)
 793 {
 794         if (!lbs_dir)
 795                 lbs_dir = debugfs_create_dir("lbs_wireless", NULL);
 796
 797         return;
 798 }
 799
 800 void lbs_debugfs_remove(void)
 801 {
 802         if (lbs_dir)
 803                  debugfs_remove(lbs_dir);
 804         return;
 805 }
 806
 807 void lbs_debugfs_init_one(struct lbs_private *priv, struct net_device *dev)
 808 {
 809         int i;
 810         const struct lbs_debugfs_files *files;
 811         if (!lbs_dir)
 812                 goto exit;
 813
 814         priv->debugfs_dir = debugfs_create_dir(dev->name, lbs_dir);
 815         if (!priv->debugfs_dir)
 816                 goto exit;
 817
 818         for (i=0; i<ARRAY_SIZE(debugfs_files); i++) {
 819                 files = &debugfs_files[i];
 820                 priv->debugfs_files[i] = debugfs_create_file(files->name,
 821                                                              files->perm,
 822                                                              priv->debugfs_dir,
 823                                                              priv,
 824                                                              &files->fops);
 825         }
 826
 827         priv->events_dir = debugfs_create_dir("subscribed_events", priv->debugfs_dir);
 828         if (!priv->events_dir)
 829                 goto exit;
 830
 831         for (i=0; i<ARRAY_SIZE(debugfs_events_files); i++) {
 832                 files = &debugfs_events_files[i];
 833                 priv->debugfs_events_files[i] = debugfs_create_file(files->name,
 834                                                              files->perm,
 835                                                              priv->events_dir,
 836                                                              priv,
 837                                                              &files->fops);
 838         }
 839
 840         priv->regs_dir = debugfs_create_dir("registers", priv->debugfs_dir);
 841         if (!priv->regs_dir)
 842                 goto exit;
 843
 844         for (i=0; i<ARRAY_SIZE(debugfs_regs_files); i++) {
 845                 files = &debugfs_regs_files[i];
 846                 priv->debugfs_regs_files[i] = debugfs_create_file(files->name,
 847                                                              files->perm,
 848                                                              priv->regs_dir,
 849                                                              priv,
 850                                                              &files->fops);
 851         }
 852
 853 #ifdef PROC_DEBUG
 854         lbs_debug_init(priv);
 855 #endif
 856 exit:
 857         return;
 858 }
 859
 860 void lbs_debugfs_remove_one(struct lbs_private *priv)
 861 {
 862         int i;
 863
 864         for(i=0; i<ARRAY_SIZE(debugfs_regs_files); i++)
 865                 debugfs_remove(priv->debugfs_regs_files[i]);
 866
 867         debugfs_remove(priv->regs_dir);
 868
 869         for(i=0; i<ARRAY_SIZE(debugfs_events_files); i++)
 870                 debugfs_remove(priv->debugfs_events_files[i]);
 871
 872         debugfs_remove(priv->events_dir);
 873 #ifdef PROC_DEBUG
 874         debugfs_remove(priv->debugfs_debug);
 875 #endif
 876         for(i=0; i<ARRAY_SIZE(debugfs_files); i++)
 877                 debugfs_remove(priv->debugfs_files[i]);
 878         debugfs_remove(priv->debugfs_dir);
 879 }
 880
 881
 882
 883 /* debug entry */
 884
 885 #ifdef PROC_DEBUG
 886
 887 #define item_size(n)    (FIELD_SIZEOF(struct lbs_private, n))
 888 #define item_addr(n)    (offsetof(struct lbs_private, n))
 889
 890
 891 struct debug_data {
 892         char name[32];
 893         u32 size;
 894         size_t addr;
 895 };
 896
 897 /* To debug any member of struct lbs_private, simply add one line here.
 898  */
 899 static struct debug_data items[] = {
 900         {"psmode", item_size(psmode), item_addr(psmode)},
 901         {"psstate", item_size(psstate), item_addr(psstate)},
 902 };
 903
 904 static int num_of_items = ARRAY_SIZE(items);
 905
 906 /**
 907  *  @brief proc read function
 908  *
 909  *  @param page    pointer to buffer
 910  *  @param s       read data starting position
 911  *  @param off     offset
 912  *  @param cnt     counter
 913  *  @param eof     end of file flag
 914  *  @param data    data to output
 915  *  @return        number of output data
 916  */
 917 static ssize_t lbs_debugfs_read(struct file *file, char __user *userbuf,
 918                         size_t count, loff_t *ppos)
 919 {
 920         int val = 0;
 921         size_t pos = 0;
 922         ssize_t res;
 923         char *p;
 924         int i;
 925         struct debug_data *d;
 926         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 927         char *buf = (char *)addr;
 928         if (!buf)
 929                 return -ENOMEM;
 930
 931         p = buf;
 932
 933         d = (struct debug_data *)file->private_data;
 934
 935         for (i = 0; i < num_of_items; i++) {
 936                 if (d[i].size == 1)
 937                         val = *((u8 *) d[i].addr);
 938                 else if (d[i].size == 2)
 939                         val = *((u16 *) d[i].addr);
 940                 else if (d[i].size == 4)
 941                         val = *((u32 *) d[i].addr);
 942                 else if (d[i].size == 8)
 943                         val = *((u64 *) d[i].addr);
 944
 945                 pos += sprintf(p + pos, "%s=%d\n", d[i].name, val);
 946         }
 947
 948         res = simple_read_from_buffer(userbuf, count, ppos, p, pos);
 949
 950         free_page(addr);
 951         return res;
 952 }
 953
 954 /**
 955  *  @brief proc write function
 956  *
 957  *  @param f       file pointer
 958  *  @param buf     pointer to data buffer
 959  *  @param cnt     data number to write
 960  *  @param data    data to write
 961  *  @return        number of data
 962  */
 963 static ssize_t lbs_debugfs_write(struct file *f, const char __user *buf,
 964                             size_t cnt, loff_t *ppos)
 965 {
 966         int r, i;
 967         char *pdata;
 968         char *p;
 969         char *p0;
 970         char *p1;
 971         char *p2;
 972         struct debug_data *d = (struct debug_data *)f->private_data;
 973
 974         pdata = kmalloc(cnt, GFP_KERNEL);
 975         if (pdata == NULL)
 976                 return 0;
 977
 978         if (copy_from_user(pdata, buf, cnt)) {
 979                 lbs_deb_debugfs("Copy from user failed\n");
 980                 kfree(pdata);
 981                 return 0;
 982         }
 983
 984         p0 = pdata;
 985         for (i = 0; i < num_of_items; i++) {
 986                 do {
 987                         p = strstr(p0, d[i].name);
 988                         if (p == NULL)
 989                                 break;
 990                         p1 = strchr(p, '\n');
 991                         if (p1 == NULL)
 992                                 break;
 993                         p0 = p1++;
 994                         p2 = strchr(p, '=');
 995                         if (!p2)
 996                                 break;
 997                         p2++;
 998                         r = simple_strtoul(p2, NULL, 0);
 999                         if (d[i].size == 1)
1000                                 *((u8 *) d[i].addr) = (u8) r;
1001                         else if (d[i].size == 2)
1002                                 *((u16 *) d[i].addr) = (u16) r;
1003                         else if (d[i].size == 4)
1004                                 *((u32 *) d[i].addr) = (u32) r;
1005                         else if (d[i].size == 8)
1006                                 *((u64 *) d[i].addr) = (u64) r;
1007                         break;
1008                 } while (1);
1009         }
1010         kfree(pdata);
1011
1012         return (ssize_t)cnt;
1013 }
1014
1015 static const struct file_operations lbs_debug_fops = {
1016         .owner = THIS_MODULE,
1017         .open = open_file_generic,
1018         .write = lbs_debugfs_write,
1019         .read = lbs_debugfs_read,
1020 };
1021
1022 /**
1023  *  @brief create debug proc file
1024  *
1025  *  @param priv    pointer struct lbs_private
1026  *  @param dev     pointer net_device
1027  *  @return        N/A
1028  */
1029 static void lbs_debug_init(struct lbs_private *priv)
1030 {
1031         int i;
1032
1033         if (!priv->debugfs_dir)
1034                 return;
1035
1036         for (i = 0; i < num_of_items; i++)
1037                 items[i].addr += (size_t) priv;
1038
1039         priv->debugfs_debug = debugfs_create_file("debug", 0644,
1040                                                   priv->debugfs_dir, &items[0],
1041                                                   &lbs_debug_fops);
1042 }
1043 #endif