drivers/net/wireless/libertas/debugfs.c

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