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