drivers/net/wireless/iwlwifi/dvm/debugfs.c

   1 /******************************************************************************
   2  *
   3  * GPL LICENSE SUMMARY
   4  *
   5  * Copyright(c) 2008 - 2014 Intel Corporation. All rights reserved.
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of version 2 of the GNU General Public License as
   9  * published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  19  * USA
  20  *
  21  * The full GNU General Public License is included in this distribution
  22  * in the file called COPYING.
  23  *
  24  * Contact Information:
  25  *  Intel Linux Wireless <ilw@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *****************************************************************************/
  28
  29 #include <linux/slab.h>
  30 #include <linux/kernel.h>
  31 #include <linux/module.h>
  32 #include <linux/debugfs.h>
  33 #include <linux/ieee80211.h>
  34 #include <net/mac80211.h>
  35 #include "iwl-debug.h"
  36 #include "iwl-io.h"
  37 #include "dev.h"
  38 #include "agn.h"
  39
  40 /* create and remove of files */
  41 #define DEBUGFS_ADD_FILE(name, parent, mode) do {                       \
  42         if (!debugfs_create_file(#name, mode, parent, priv,             \
  43                                  &iwl_dbgfs_##name##_ops))              \
  44                 goto err;                                               \
  45 } while (0)
  46
  47 #define DEBUGFS_ADD_BOOL(name, parent, ptr) do {                        \
  48         struct dentry *__tmp;                                           \
  49         __tmp = debugfs_create_bool(#name, S_IWUSR | S_IRUSR,           \
  50                                     parent, ptr);                       \
  51         if (IS_ERR(__tmp) || !__tmp)                                    \
  52                 goto err;                                               \
  53 } while (0)
  54
  55 #define DEBUGFS_ADD_X32(name, parent, ptr) do {                         \
  56         struct dentry *__tmp;                                           \
  57         __tmp = debugfs_create_x32(#name, S_IWUSR | S_IRUSR,            \
  58                                    parent, ptr);                        \
  59         if (IS_ERR(__tmp) || !__tmp)                                    \
  60                 goto err;                                               \
  61 } while (0)
  62
  63 #define DEBUGFS_ADD_U32(name, parent, ptr, mode) do {                   \
  64         struct dentry *__tmp;                                           \
  65         __tmp = debugfs_create_u32(#name, mode,                         \
  66                                    parent, ptr);                        \
  67         if (IS_ERR(__tmp) || !__tmp)                                    \
  68                 goto err;                                               \
  69 } while (0)
  70
  71 /* file operation */
  72 #define DEBUGFS_READ_FILE_OPS(name)                                     \
  73 static const struct file_operations iwl_dbgfs_##name##_ops = {          \
  74         .read = iwl_dbgfs_##name##_read,                                \
  75         .open = simple_open,                                            \
  76         .llseek = generic_file_llseek,                                  \
  77 };
  78
  79 #define DEBUGFS_WRITE_FILE_OPS(name)                                    \
  80 static const struct file_operations iwl_dbgfs_##name##_ops = {          \
  81         .write = iwl_dbgfs_##name##_write,                              \
  82         .open = simple_open,                                            \
  83         .llseek = generic_file_llseek,                                  \
  84 };
  85
  86
  87 #define DEBUGFS_READ_WRITE_FILE_OPS(name)                               \
  88 static const struct file_operations iwl_dbgfs_##name##_ops = {          \
  89         .write = iwl_dbgfs_##name##_write,                              \
  90         .read = iwl_dbgfs_##name##_read,                                \
  91         .open = simple_open,                                            \
  92         .llseek = generic_file_llseek,                                  \
  93 };
  94
  95 static ssize_t iwl_dbgfs_sram_read(struct file *file,
  96                                         char __user *user_buf,
  97                                         size_t count, loff_t *ppos)
  98 {
  99         u32 val = 0;
 100         char *buf;
 101         ssize_t ret;
 102         int i = 0;
 103         bool device_format = false;
 104         int offset = 0;
 105         int len = 0;
 106         int pos = 0;
 107         int sram;
 108         struct iwl_priv *priv = file->private_data;
 109         const struct fw_img *img;
 110         size_t bufsz;
 111
 112         if (!iwl_is_ready_rf(priv))
 113                 return -EAGAIN;
 114
 115         /* default is to dump the entire data segment */
 116         if (!priv->dbgfs_sram_offset && !priv->dbgfs_sram_len) {
 117                 priv->dbgfs_sram_offset = 0x800000;
 118                 if (!priv->ucode_loaded)
 119                         return -EINVAL;
 120                 img = &priv->fw->img[priv->cur_ucode];
 121                 priv->dbgfs_sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
 122         }
 123         len = priv->dbgfs_sram_len;
 124
 125         if (len == -4) {
 126                 device_format = true;
 127                 len = 4;
 128         }
 129
 130         bufsz =  50 + len * 4;
 131         buf = kmalloc(bufsz, GFP_KERNEL);
 132         if (!buf)
 133                 return -ENOMEM;
 134
 135         pos += scnprintf(buf + pos, bufsz - pos, "sram_len: 0x%x\n",
 136                          len);
 137         pos += scnprintf(buf + pos, bufsz - pos, "sram_offset: 0x%x\n",
 138                         priv->dbgfs_sram_offset);
 139
 140         /* adjust sram address since reads are only on even u32 boundaries */
 141         offset = priv->dbgfs_sram_offset & 0x3;
 142         sram = priv->dbgfs_sram_offset & ~0x3;
 143
 144         /* read the first u32 from sram */
 145         val = iwl_trans_read_mem32(priv->trans, sram);
 146
 147         for (; len; len--) {
 148                 /* put the address at the start of every line */
 149                 if (i == 0)
 150                         pos += scnprintf(buf + pos, bufsz - pos,
 151                                 "%08X: ", sram + offset);
 152
 153                 if (device_format)
 154                         pos += scnprintf(buf + pos, bufsz - pos,
 155                                 "%02x", (val >> (8 * (3 - offset))) & 0xff);
 156                 else
 157                         pos += scnprintf(buf + pos, bufsz - pos,
 158                                 "%02x ", (val >> (8 * offset)) & 0xff);
 159
 160                 /* if all bytes processed, read the next u32 from sram */
 161                 if (++offset == 4) {
 162                         sram += 4;
 163                         offset = 0;
 164                         val = iwl_trans_read_mem32(priv->trans, sram);
 165                 }
 166
 167                 /* put in extra spaces and split lines for human readability */
 168                 if (++i == 16) {
 169                         i = 0;
 170                         pos += scnprintf(buf + pos, bufsz - pos, "\n");
 171                 } else if (!(i & 7)) {
 172                         pos += scnprintf(buf + pos, bufsz - pos, "   ");
 173                 } else if (!(i & 3)) {
 174                         pos += scnprintf(buf + pos, bufsz - pos, " ");
 175                 }
 176         }
 177         if (i)
 178                 pos += scnprintf(buf + pos, bufsz - pos, "\n");
 179
 180         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 181         kfree(buf);
 182         return ret;
 183 }
 184
 185 static ssize_t iwl_dbgfs_sram_write(struct file *file,
 186                                         const char __user *user_buf,
 187                                         size_t count, loff_t *ppos)
 188 {
 189         struct iwl_priv *priv = file->private_data;
 190         char buf[64];
 191         int buf_size;
 192         u32 offset, len;
 193
 194         memset(buf, 0, sizeof(buf));
 195         buf_size = min(count, sizeof(buf) -  1);
 196         if (copy_from_user(buf, user_buf, buf_size))
 197                 return -EFAULT;
 198
 199         if (sscanf(buf, "%x,%x", &offset, &len) == 2) {
 200                 priv->dbgfs_sram_offset = offset;
 201                 priv->dbgfs_sram_len = len;
 202         } else if (sscanf(buf, "%x", &offset) == 1) {
 203                 priv->dbgfs_sram_offset = offset;
 204                 priv->dbgfs_sram_len = -4;
 205         } else {
 206                 priv->dbgfs_sram_offset = 0;
 207                 priv->dbgfs_sram_len = 0;
 208         }
 209
 210         return count;
 211 }
 212
 213 static ssize_t iwl_dbgfs_wowlan_sram_read(struct file *file,
 214                                           char __user *user_buf,
 215                                           size_t count, loff_t *ppos)
 216 {
 217         struct iwl_priv *priv = file->private_data;
 218         const struct fw_img *img = &priv->fw->img[IWL_UCODE_WOWLAN];
 219
 220         if (!priv->wowlan_sram)
 221                 return -ENODATA;
 222
 223         return simple_read_from_buffer(user_buf, count, ppos,
 224                                        priv->wowlan_sram,
 225                                        img->sec[IWL_UCODE_SECTION_DATA].len);
 226 }
 227 static ssize_t iwl_dbgfs_stations_read(struct file *file, char __user *user_buf,
 228                                         size_t count, loff_t *ppos)
 229 {
 230         struct iwl_priv *priv = file->private_data;
 231         struct iwl_station_entry *station;
 232         struct iwl_tid_data *tid_data;
 233         char *buf;
 234         int i, j, pos = 0;
 235         ssize_t ret;
 236         /* Add 30 for initial string */
 237         const size_t bufsz = 30 + sizeof(char) * 500 * (priv->num_stations);
 238
 239         buf = kmalloc(bufsz, GFP_KERNEL);
 240         if (!buf)
 241                 return -ENOMEM;
 242
 243         pos += scnprintf(buf + pos, bufsz - pos, "num of stations: %d\n\n",
 244                         priv->num_stations);
 245
 246         for (i = 0; i < IWLAGN_STATION_COUNT; i++) {
 247                 station = &priv->stations[i];
 248                 if (!station->used)
 249                         continue;
 250                 pos += scnprintf(buf + pos, bufsz - pos,
 251                                  "station %d - addr: %pM, flags: %#x\n",
 252                                  i, station->sta.sta.addr,
 253                                  station->sta.station_flags_msk);
 254                 pos += scnprintf(buf + pos, bufsz - pos,
 255                                 "TID seqno  next_rclmd "
 256                                 "rate_n_flags state txq\n");
 257
 258                 for (j = 0; j < IWL_MAX_TID_COUNT; j++) {
 259                         tid_data = &priv->tid_data[i][j];
 260                         pos += scnprintf(buf + pos, bufsz - pos,
 261                                 "%d:  0x%.4x 0x%.4x     0x%.8x   "
 262                                 "%d     %.2d",
 263                                 j, tid_data->seq_number,
 264                                 tid_data->next_reclaimed,
 265                                 tid_data->agg.rate_n_flags,
 266                                 tid_data->agg.state,
 267                                 tid_data->agg.txq_id);
 268
 269                         if (tid_data->agg.wait_for_ba)
 270                                 pos += scnprintf(buf + pos, bufsz - pos,
 271                                                  " - waitforba");
 272                         pos += scnprintf(buf + pos, bufsz - pos, "\n");
 273                 }
 274
 275                 pos += scnprintf(buf + pos, bufsz - pos, "\n");
 276         }
 277
 278         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 279         kfree(buf);
 280         return ret;
 281 }
 282
 283 static ssize_t iwl_dbgfs_nvm_read(struct file *file,
 284                                        char __user *user_buf,
 285                                        size_t count,
 286                                        loff_t *ppos)
 287 {
 288         ssize_t ret;
 289         struct iwl_priv *priv = file->private_data;
 290         int pos = 0, ofs = 0, buf_size = 0;
 291         const u8 *ptr;
 292         char *buf;
 293         u16 nvm_ver;
 294         size_t eeprom_len = priv->eeprom_blob_size;
 295         buf_size = 4 * eeprom_len + 256;
 296
 297         if (eeprom_len % 16)
 298                 return -ENODATA;
 299
 300         ptr = priv->eeprom_blob;
 301         if (!ptr)
 302                 return -ENOMEM;
 303
 304         /* 4 characters for byte 0xYY */
 305         buf = kzalloc(buf_size, GFP_KERNEL);
 306         if (!buf)
 307                 return -ENOMEM;
 308
 309         nvm_ver = priv->nvm_data->nvm_version;
 310         pos += scnprintf(buf + pos, buf_size - pos,
 311                          "NVM version: 0x%x\n", nvm_ver);
 312         for (ofs = 0 ; ofs < eeprom_len ; ofs += 16) {
 313                 pos += scnprintf(buf + pos, buf_size - pos, "0x%.4x %16ph\n",
 314                                  ofs, ptr + ofs);
 315         }
 316
 317         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 318         kfree(buf);
 319         return ret;
 320 }
 321
 322 static ssize_t iwl_dbgfs_channels_read(struct file *file, char __user *user_buf,
 323                                        size_t count, loff_t *ppos)
 324 {
 325         struct iwl_priv *priv = file->private_data;
 326         struct ieee80211_channel *channels = NULL;
 327         const struct ieee80211_supported_band *supp_band = NULL;
 328         int pos = 0, i, bufsz = PAGE_SIZE;
 329         char *buf;
 330         ssize_t ret;
 331
 332         buf = kzalloc(bufsz, GFP_KERNEL);
 333         if (!buf)
 334                 return -ENOMEM;
 335
 336         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
 337         if (supp_band) {
 338                 channels = supp_band->channels;
 339
 340                 pos += scnprintf(buf + pos, bufsz - pos,
 341                                 "Displaying %d channels in 2.4GHz band 802.11bg):\n",
 342                                 supp_band->n_channels);
 343
 344                 for (i = 0; i < supp_band->n_channels; i++)
 345                         pos += scnprintf(buf + pos, bufsz - pos,
 346                                         "%d: %ddBm: BSS%s%s, %s.\n",
 347                                         channels[i].hw_value,
 348                                         channels[i].max_power,
 349                                         channels[i].flags & IEEE80211_CHAN_RADAR ?
 350                                         " (IEEE 802.11h required)" : "",
 351                                         ((channels[i].flags & IEEE80211_CHAN_NO_IR)
 352                                         || (channels[i].flags &
 353                                         IEEE80211_CHAN_RADAR)) ? "" :
 354                                         ", IBSS",
 355                                         channels[i].flags &
 356                                         IEEE80211_CHAN_NO_IR ?
 357                                         "passive only" : "active/passive");
 358         }
 359         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
 360         if (supp_band) {
 361                 channels = supp_band->channels;
 362
 363                 pos += scnprintf(buf + pos, bufsz - pos,
 364                                 "Displaying %d channels in 5.2GHz band (802.11a)\n",
 365                                 supp_band->n_channels);
 366
 367                 for (i = 0; i < supp_band->n_channels; i++)
 368                         pos += scnprintf(buf + pos, bufsz - pos,
 369                                         "%d: %ddBm: BSS%s%s, %s.\n",
 370                                         channels[i].hw_value,
 371                                         channels[i].max_power,
 372                                         channels[i].flags & IEEE80211_CHAN_RADAR ?
 373                                         " (IEEE 802.11h required)" : "",
 374                                         ((channels[i].flags & IEEE80211_CHAN_NO_IR)
 375                                         || (channels[i].flags &
 376                                         IEEE80211_CHAN_RADAR)) ? "" :
 377                                         ", IBSS",
 378                                         channels[i].flags &
 379                                         IEEE80211_CHAN_NO_IR ?
 380                                         "passive only" : "active/passive");
 381         }
 382         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 383         kfree(buf);
 384         return ret;
 385 }
 386
 387 static ssize_t iwl_dbgfs_status_read(struct file *file,
 388                                                 char __user *user_buf,
 389                                                 size_t count, loff_t *ppos) {
 390
 391         struct iwl_priv *priv = file->private_data;
 392         char buf[512];
 393         int pos = 0;
 394         const size_t bufsz = sizeof(buf);
 395
 396         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_RF_KILL_HW:\t %d\n",
 397                 test_bit(STATUS_RF_KILL_HW, &priv->status));
 398         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_CT_KILL:\t\t %d\n",
 399                 test_bit(STATUS_CT_KILL, &priv->status));
 400         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_ALIVE:\t\t %d\n",
 401                 test_bit(STATUS_ALIVE, &priv->status));
 402         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_READY:\t\t %d\n",
 403                 test_bit(STATUS_READY, &priv->status));
 404         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_EXIT_PENDING:\t %d\n",
 405                 test_bit(STATUS_EXIT_PENDING, &priv->status));
 406         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_STATISTICS:\t %d\n",
 407                 test_bit(STATUS_STATISTICS, &priv->status));
 408         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_SCANNING:\t %d\n",
 409                 test_bit(STATUS_SCANNING, &priv->status));
 410         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_SCAN_ABORTING:\t %d\n",
 411                 test_bit(STATUS_SCAN_ABORTING, &priv->status));
 412         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_SCAN_HW:\t\t %d\n",
 413                 test_bit(STATUS_SCAN_HW, &priv->status));
 414         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_POWER_PMI:\t %d\n",
 415                 test_bit(STATUS_POWER_PMI, &priv->status));
 416         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_FW_ERROR:\t %d\n",
 417                 test_bit(STATUS_FW_ERROR, &priv->status));
 418         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 419 }
 420
 421 static ssize_t iwl_dbgfs_rx_handlers_read(struct file *file,
 422                                         char __user *user_buf,
 423                                         size_t count, loff_t *ppos) {
 424
 425         struct iwl_priv *priv = file->private_data;
 426
 427         int pos = 0;
 428         int cnt = 0;
 429         char *buf;
 430         int bufsz = 24 * 64; /* 24 items * 64 char per item */
 431         ssize_t ret;
 432
 433         buf = kzalloc(bufsz, GFP_KERNEL);
 434         if (!buf)
 435                 return -ENOMEM;
 436
 437         for (cnt = 0; cnt < REPLY_MAX; cnt++) {
 438                 if (priv->rx_handlers_stats[cnt] > 0)
 439                         pos += scnprintf(buf + pos, bufsz - pos,
 440                                 "\tRx handler[%36s]:\t\t %u\n",
 441                                 iwl_dvm_get_cmd_string(cnt),
 442                                 priv->rx_handlers_stats[cnt]);
 443         }
 444
 445         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 446         kfree(buf);
 447         return ret;
 448 }
 449
 450 static ssize_t iwl_dbgfs_rx_handlers_write(struct file *file,
 451                                          const char __user *user_buf,
 452                                          size_t count, loff_t *ppos)
 453 {
 454         struct iwl_priv *priv = file->private_data;
 455
 456         char buf[8];
 457         int buf_size;
 458         u32 reset_flag;
 459
 460         memset(buf, 0, sizeof(buf));
 461         buf_size = min(count, sizeof(buf) -  1);
 462         if (copy_from_user(buf, user_buf, buf_size))
 463                 return -EFAULT;
 464         if (sscanf(buf, "%x", &reset_flag) != 1)
 465                 return -EFAULT;
 466         if (reset_flag == 0)
 467                 memset(&priv->rx_handlers_stats[0], 0,
 468                         sizeof(priv->rx_handlers_stats));
 469
 470         return count;
 471 }
 472
 473 static ssize_t iwl_dbgfs_qos_read(struct file *file, char __user *user_buf,
 474                                        size_t count, loff_t *ppos)
 475 {
 476         struct iwl_priv *priv = file->private_data;
 477         struct iwl_rxon_context *ctx;
 478         int pos = 0, i;
 479         char buf[256 * NUM_IWL_RXON_CTX];
 480         const size_t bufsz = sizeof(buf);
 481
 482         for_each_context(priv, ctx) {
 483                 pos += scnprintf(buf + pos, bufsz - pos, "context %d:\n",
 484                                  ctx->ctxid);
 485                 for (i = 0; i < AC_NUM; i++) {
 486                         pos += scnprintf(buf + pos, bufsz - pos,
 487                                 "\tcw_min\tcw_max\taifsn\ttxop\n");
 488                         pos += scnprintf(buf + pos, bufsz - pos,
 489                                 "AC[%d]\t%u\t%u\t%u\t%u\n", i,
 490                                 ctx->qos_data.def_qos_parm.ac[i].cw_min,
 491                                 ctx->qos_data.def_qos_parm.ac[i].cw_max,
 492                                 ctx->qos_data.def_qos_parm.ac[i].aifsn,
 493                                 ctx->qos_data.def_qos_parm.ac[i].edca_txop);
 494                 }
 495                 pos += scnprintf(buf + pos, bufsz - pos, "\n");
 496         }
 497         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 498 }
 499
 500 static ssize_t iwl_dbgfs_thermal_throttling_read(struct file *file,
 501                                 char __user *user_buf,
 502                                 size_t count, loff_t *ppos)
 503 {
 504         struct iwl_priv *priv = file->private_data;
 505         struct iwl_tt_mgmt *tt = &priv->thermal_throttle;
 506         struct iwl_tt_restriction *restriction;
 507         char buf[100];
 508         int pos = 0;
 509         const size_t bufsz = sizeof(buf);
 510
 511         pos += scnprintf(buf + pos, bufsz - pos,
 512                         "Thermal Throttling Mode: %s\n",
 513                         tt->advanced_tt ? "Advance" : "Legacy");
 514         pos += scnprintf(buf + pos, bufsz - pos,
 515                         "Thermal Throttling State: %d\n",
 516                         tt->state);
 517         if (tt->advanced_tt) {
 518                 restriction = tt->restriction + tt->state;
 519                 pos += scnprintf(buf + pos, bufsz - pos,
 520                                 "Tx mode: %d\n",
 521                                 restriction->tx_stream);
 522                 pos += scnprintf(buf + pos, bufsz - pos,
 523                                 "Rx mode: %d\n",
 524                                 restriction->rx_stream);
 525                 pos += scnprintf(buf + pos, bufsz - pos,
 526                                 "HT mode: %d\n",
 527                                 restriction->is_ht);
 528         }
 529         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 530 }
 531
 532 static ssize_t iwl_dbgfs_disable_ht40_write(struct file *file,
 533                                          const char __user *user_buf,
 534                                          size_t count, loff_t *ppos)
 535 {
 536         struct iwl_priv *priv = file->private_data;
 537         char buf[8];
 538         int buf_size;
 539         int ht40;
 540
 541         memset(buf, 0, sizeof(buf));
 542         buf_size = min(count, sizeof(buf) -  1);
 543         if (copy_from_user(buf, user_buf, buf_size))
 544                 return -EFAULT;
 545         if (sscanf(buf, "%d", &ht40) != 1)
 546                 return -EFAULT;
 547         if (!iwl_is_any_associated(priv))
 548                 priv->disable_ht40 = ht40 ? true : false;
 549         else
 550                 return -EINVAL;
 551
 552         return count;
 553 }
 554
 555 static ssize_t iwl_dbgfs_disable_ht40_read(struct file *file,
 556                                          char __user *user_buf,
 557                                          size_t count, loff_t *ppos)
 558 {
 559         struct iwl_priv *priv = file->private_data;
 560         char buf[100];
 561         int pos = 0;
 562         const size_t bufsz = sizeof(buf);
 563
 564         pos += scnprintf(buf + pos, bufsz - pos,
 565                         "11n 40MHz Mode: %s\n",
 566                         priv->disable_ht40 ? "Disabled" : "Enabled");
 567         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 568 }
 569
 570 static ssize_t iwl_dbgfs_temperature_read(struct file *file,
 571                                          char __user *user_buf,
 572                                          size_t count, loff_t *ppos)
 573 {
 574         struct iwl_priv *priv = file->private_data;
 575         char buf[8];
 576         int pos = 0;
 577         const size_t bufsz = sizeof(buf);
 578
 579         pos += scnprintf(buf + pos, bufsz - pos, "%d\n", priv->temperature);
 580         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 581 }
 582
 583
 584 static ssize_t iwl_dbgfs_sleep_level_override_write(struct file *file,
 585                                                     const char __user *user_buf,
 586                                                     size_t count, loff_t *ppos)
 587 {
 588         struct iwl_priv *priv = file->private_data;
 589         char buf[8];
 590         int buf_size;
 591         int value;
 592
 593         memset(buf, 0, sizeof(buf));
 594         buf_size = min(count, sizeof(buf) -  1);
 595         if (copy_from_user(buf, user_buf, buf_size))
 596                 return -EFAULT;
 597
 598         if (sscanf(buf, "%d", &value) != 1)
 599                 return -EINVAL;
 600
 601         /*
 602          * Our users expect 0 to be "CAM", but 0 isn't actually
 603          * valid here. However, let's not confuse them and present
 604          * IWL_POWER_INDEX_1 as "1", not "0".
 605          */
 606         if (value == 0)
 607                 return -EINVAL;
 608         else if (value > 0)
 609                 value -= 1;
 610
 611         if (value != -1 && (value < 0 || value >= IWL_POWER_NUM))
 612                 return -EINVAL;
 613
 614         if (!iwl_is_ready_rf(priv))
 615                 return -EAGAIN;
 616
 617         priv->power_data.debug_sleep_level_override = value;
 618
 619         mutex_lock(&priv->mutex);
 620         iwl_power_update_mode(priv, true);
 621         mutex_unlock(&priv->mutex);
 622
 623         return count;
 624 }
 625
 626 static ssize_t iwl_dbgfs_sleep_level_override_read(struct file *file,
 627                                                    char __user *user_buf,
 628                                                    size_t count, loff_t *ppos)
 629 {
 630         struct iwl_priv *priv = file->private_data;
 631         char buf[10];
 632         int pos, value;
 633         const size_t bufsz = sizeof(buf);
 634
 635         /* see the write function */
 636         value = priv->power_data.debug_sleep_level_override;
 637         if (value >= 0)
 638                 value += 1;
 639
 640         pos = scnprintf(buf, bufsz, "%d\n", value);
 641         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 642 }
 643
 644 static ssize_t iwl_dbgfs_current_sleep_command_read(struct file *file,
 645                                                     char __user *user_buf,
 646                                                     size_t count, loff_t *ppos)
 647 {
 648         struct iwl_priv *priv = file->private_data;
 649         char buf[200];
 650         int pos = 0, i;
 651         const size_t bufsz = sizeof(buf);
 652         struct iwl_powertable_cmd *cmd = &priv->power_data.sleep_cmd;
 653
 654         pos += scnprintf(buf + pos, bufsz - pos,
 655                          "flags: %#.2x\n", le16_to_cpu(cmd->flags));
 656         pos += scnprintf(buf + pos, bufsz - pos,
 657                          "RX/TX timeout: %d/%d usec\n",
 658                          le32_to_cpu(cmd->rx_data_timeout),
 659                          le32_to_cpu(cmd->tx_data_timeout));
 660         for (i = 0; i < IWL_POWER_VEC_SIZE; i++)
 661                 pos += scnprintf(buf + pos, bufsz - pos,
 662                                  "sleep_interval[%d]: %d\n", i,
 663                                  le32_to_cpu(cmd->sleep_interval[i]));
 664
 665         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 666 }
 667
 668 DEBUGFS_READ_WRITE_FILE_OPS(sram);
 669 DEBUGFS_READ_FILE_OPS(wowlan_sram);
 670 DEBUGFS_READ_FILE_OPS(nvm);
 671 DEBUGFS_READ_FILE_OPS(stations);
 672 DEBUGFS_READ_FILE_OPS(channels);
 673 DEBUGFS_READ_FILE_OPS(status);
 674 DEBUGFS_READ_WRITE_FILE_OPS(rx_handlers);
 675 DEBUGFS_READ_FILE_OPS(qos);
 676 DEBUGFS_READ_FILE_OPS(thermal_throttling);
 677 DEBUGFS_READ_WRITE_FILE_OPS(disable_ht40);
 678 DEBUGFS_READ_FILE_OPS(temperature);
 679 DEBUGFS_READ_WRITE_FILE_OPS(sleep_level_override);
 680 DEBUGFS_READ_FILE_OPS(current_sleep_command);
 681
 682 static const char *fmt_value = "  %-30s %10u\n";
 683 static const char *fmt_hex   = "  %-30s       0x%02X\n";
 684 static const char *fmt_table = "  %-30s %10u  %10u  %10u  %10u\n";
 685 static const char *fmt_header =
 686         "%-32s    current  cumulative       delta         max\n";
 687
 688 static int iwl_statistics_flag(struct iwl_priv *priv, char *buf, int bufsz)
 689 {
 690         int p = 0;
 691         u32 flag;
 692
 693         lockdep_assert_held(&priv->statistics.lock);
 694
 695         flag = le32_to_cpu(priv->statistics.flag);
 696
 697         p += scnprintf(buf + p, bufsz - p, "Statistics Flag(0x%X):\n", flag);
 698         if (flag & UCODE_STATISTICS_CLEAR_MSK)
 699                 p += scnprintf(buf + p, bufsz - p,
 700                 "\tStatistics have been cleared\n");
 701         p += scnprintf(buf + p, bufsz - p, "\tOperational Frequency: %s\n",
 702                 (flag & UCODE_STATISTICS_FREQUENCY_MSK)
 703                 ? "2.4 GHz" : "5.2 GHz");
 704         p += scnprintf(buf + p, bufsz - p, "\tTGj Narrow Band: %s\n",
 705                 (flag & UCODE_STATISTICS_NARROW_BAND_MSK)
 706                  ? "enabled" : "disabled");
 707
 708         return p;
 709 }
 710
 711 static ssize_t iwl_dbgfs_ucode_rx_stats_read(struct file *file,
 712                                         char __user *user_buf,
 713                                         size_t count, loff_t *ppos)
 714 {
 715         struct iwl_priv *priv = file->private_data;
 716         int pos = 0;
 717         char *buf;
 718         int bufsz = sizeof(struct statistics_rx_phy) * 40 +
 719                     sizeof(struct statistics_rx_non_phy) * 40 +
 720                     sizeof(struct statistics_rx_ht_phy) * 40 + 400;
 721         ssize_t ret;
 722         struct statistics_rx_phy *ofdm, *accum_ofdm, *delta_ofdm, *max_ofdm;
 723         struct statistics_rx_phy *cck, *accum_cck, *delta_cck, *max_cck;
 724         struct statistics_rx_non_phy *general, *accum_general;
 725         struct statistics_rx_non_phy *delta_general, *max_general;
 726         struct statistics_rx_ht_phy *ht, *accum_ht, *delta_ht, *max_ht;
 727
 728         if (!iwl_is_alive(priv))
 729                 return -EAGAIN;
 730
 731         buf = kzalloc(bufsz, GFP_KERNEL);
 732         if (!buf)
 733                 return -ENOMEM;
 734
 735         /*
 736          * the statistic information display here is based on
 737          * the last statistics notification from uCode
 738          * might not reflect the current uCode activity
 739          */
 740         spin_lock_bh(&priv->statistics.lock);
 741         ofdm = &priv->statistics.rx_ofdm;
 742         cck = &priv->statistics.rx_cck;
 743         general = &priv->statistics.rx_non_phy;
 744         ht = &priv->statistics.rx_ofdm_ht;
 745         accum_ofdm = &priv->accum_stats.rx_ofdm;
 746         accum_cck = &priv->accum_stats.rx_cck;
 747         accum_general = &priv->accum_stats.rx_non_phy;
 748         accum_ht = &priv->accum_stats.rx_ofdm_ht;
 749         delta_ofdm = &priv->delta_stats.rx_ofdm;
 750         delta_cck = &priv->delta_stats.rx_cck;
 751         delta_general = &priv->delta_stats.rx_non_phy;
 752         delta_ht = &priv->delta_stats.rx_ofdm_ht;
 753         max_ofdm = &priv->max_delta_stats.rx_ofdm;
 754         max_cck = &priv->max_delta_stats.rx_cck;
 755         max_general = &priv->max_delta_stats.rx_non_phy;
 756         max_ht = &priv->max_delta_stats.rx_ofdm_ht;
 757
 758         pos += iwl_statistics_flag(priv, buf, bufsz);
 759         pos += scnprintf(buf + pos, bufsz - pos,
 760                          fmt_header, "Statistics_Rx - OFDM:");
 761         pos += scnprintf(buf + pos, bufsz - pos,
 762                          fmt_table, "ina_cnt:",
 763                          le32_to_cpu(ofdm->ina_cnt),
 764                          accum_ofdm->ina_cnt,
 765                          delta_ofdm->ina_cnt, max_ofdm->ina_cnt);
 766         pos += scnprintf(buf + pos, bufsz - pos,
 767                          fmt_table, "fina_cnt:",
 768                          le32_to_cpu(ofdm->fina_cnt), accum_ofdm->fina_cnt,
 769                          delta_ofdm->fina_cnt, max_ofdm->fina_cnt);
 770         pos += scnprintf(buf + pos, bufsz - pos,
 771                          fmt_table, "plcp_err:",
 772                          le32_to_cpu(ofdm->plcp_err), accum_ofdm->plcp_err,
 773                          delta_ofdm->plcp_err, max_ofdm->plcp_err);
 774         pos += scnprintf(buf + pos, bufsz - pos,
 775                          fmt_table, "crc32_err:",
 776                          le32_to_cpu(ofdm->crc32_err), accum_ofdm->crc32_err,
 777                          delta_ofdm->crc32_err, max_ofdm->crc32_err);
 778         pos += scnprintf(buf + pos, bufsz - pos,
 779                          fmt_table, "overrun_err:",
 780                          le32_to_cpu(ofdm->overrun_err),
 781                          accum_ofdm->overrun_err, delta_ofdm->overrun_err,
 782                          max_ofdm->overrun_err);
 783         pos += scnprintf(buf + pos, bufsz - pos,
 784                          fmt_table, "early_overrun_err:",
 785                          le32_to_cpu(ofdm->early_overrun_err),
 786                          accum_ofdm->early_overrun_err,
 787                          delta_ofdm->early_overrun_err,
 788                          max_ofdm->early_overrun_err);
 789         pos += scnprintf(buf + pos, bufsz - pos,
 790                          fmt_table, "crc32_good:",
 791                          le32_to_cpu(ofdm->crc32_good),
 792                          accum_ofdm->crc32_good, delta_ofdm->crc32_good,
 793                          max_ofdm->crc32_good);
 794         pos += scnprintf(buf + pos, bufsz - pos,
 795                          fmt_table, "false_alarm_cnt:",
 796                          le32_to_cpu(ofdm->false_alarm_cnt),
 797                          accum_ofdm->false_alarm_cnt,
 798                          delta_ofdm->false_alarm_cnt,
 799                          max_ofdm->false_alarm_cnt);
 800         pos += scnprintf(buf + pos, bufsz - pos,
 801                          fmt_table, "fina_sync_err_cnt:",
 802                          le32_to_cpu(ofdm->fina_sync_err_cnt),
 803                          accum_ofdm->fina_sync_err_cnt,
 804                          delta_ofdm->fina_sync_err_cnt,
 805                          max_ofdm->fina_sync_err_cnt);
 806         pos += scnprintf(buf + pos, bufsz - pos,
 807                          fmt_table, "sfd_timeout:",
 808                          le32_to_cpu(ofdm->sfd_timeout),
 809                          accum_ofdm->sfd_timeout, delta_ofdm->sfd_timeout,
 810                          max_ofdm->sfd_timeout);
 811         pos += scnprintf(buf + pos, bufsz - pos,
 812                          fmt_table, "fina_timeout:",
 813                          le32_to_cpu(ofdm->fina_timeout),
 814                          accum_ofdm->fina_timeout, delta_ofdm->fina_timeout,
 815                          max_ofdm->fina_timeout);
 816         pos += scnprintf(buf + pos, bufsz - pos,
 817                          fmt_table, "unresponded_rts:",
 818                          le32_to_cpu(ofdm->unresponded_rts),
 819                          accum_ofdm->unresponded_rts,
 820                          delta_ofdm->unresponded_rts,
 821                          max_ofdm->unresponded_rts);
 822         pos += scnprintf(buf + pos, bufsz - pos,
 823                          fmt_table, "rxe_frame_lmt_ovrun:",
 824                          le32_to_cpu(ofdm->rxe_frame_limit_overrun),
 825                          accum_ofdm->rxe_frame_limit_overrun,
 826                          delta_ofdm->rxe_frame_limit_overrun,
 827                          max_ofdm->rxe_frame_limit_overrun);
 828         pos += scnprintf(buf + pos, bufsz - pos,
 829                          fmt_table, "sent_ack_cnt:",
 830                          le32_to_cpu(ofdm->sent_ack_cnt),
 831                          accum_ofdm->sent_ack_cnt, delta_ofdm->sent_ack_cnt,
 832                          max_ofdm->sent_ack_cnt);
 833         pos += scnprintf(buf + pos, bufsz - pos,
 834                          fmt_table, "sent_cts_cnt:",
 835                          le32_to_cpu(ofdm->sent_cts_cnt),
 836                          accum_ofdm->sent_cts_cnt, delta_ofdm->sent_cts_cnt,
 837                          max_ofdm->sent_cts_cnt);
 838         pos += scnprintf(buf + pos, bufsz - pos,
 839                          fmt_table, "sent_ba_rsp_cnt:",
 840                          le32_to_cpu(ofdm->sent_ba_rsp_cnt),
 841                          accum_ofdm->sent_ba_rsp_cnt,
 842                          delta_ofdm->sent_ba_rsp_cnt,
 843                          max_ofdm->sent_ba_rsp_cnt);
 844         pos += scnprintf(buf + pos, bufsz - pos,
 845                          fmt_table, "dsp_self_kill:",
 846                          le32_to_cpu(ofdm->dsp_self_kill),
 847                          accum_ofdm->dsp_self_kill,
 848                          delta_ofdm->dsp_self_kill,
 849                          max_ofdm->dsp_self_kill);
 850         pos += scnprintf(buf + pos, bufsz - pos,
 851                          fmt_table, "mh_format_err:",
 852                          le32_to_cpu(ofdm->mh_format_err),
 853                          accum_ofdm->mh_format_err,
 854                          delta_ofdm->mh_format_err,
 855                          max_ofdm->mh_format_err);
 856         pos += scnprintf(buf + pos, bufsz - pos,
 857                          fmt_table, "re_acq_main_rssi_sum:",
 858                          le32_to_cpu(ofdm->re_acq_main_rssi_sum),
 859                          accum_ofdm->re_acq_main_rssi_sum,
 860                          delta_ofdm->re_acq_main_rssi_sum,
 861                          max_ofdm->re_acq_main_rssi_sum);
 862
 863         pos += scnprintf(buf + pos, bufsz - pos,
 864                          fmt_header, "Statistics_Rx - CCK:");
 865         pos += scnprintf(buf + pos, bufsz - pos,
 866                          fmt_table, "ina_cnt:",
 867                          le32_to_cpu(cck->ina_cnt), accum_cck->ina_cnt,
 868                          delta_cck->ina_cnt, max_cck->ina_cnt);
 869         pos += scnprintf(buf + pos, bufsz - pos,
 870                          fmt_table, "fina_cnt:",
 871                          le32_to_cpu(cck->fina_cnt), accum_cck->fina_cnt,
 872                          delta_cck->fina_cnt, max_cck->fina_cnt);
 873         pos += scnprintf(buf + pos, bufsz - pos,
 874                          fmt_table, "plcp_err:",
 875                          le32_to_cpu(cck->plcp_err), accum_cck->plcp_err,
 876                          delta_cck->plcp_err, max_cck->plcp_err);
 877         pos += scnprintf(buf + pos, bufsz - pos,
 878                          fmt_table, "crc32_err:",
 879                          le32_to_cpu(cck->crc32_err), accum_cck->crc32_err,
 880                          delta_cck->crc32_err, max_cck->crc32_err);
 881         pos += scnprintf(buf + pos, bufsz - pos,
 882                          fmt_table, "overrun_err:",
 883                          le32_to_cpu(cck->overrun_err),
 884                          accum_cck->overrun_err, delta_cck->overrun_err,
 885                          max_cck->overrun_err);
 886         pos += scnprintf(buf + pos, bufsz - pos,
 887                          fmt_table, "early_overrun_err:",
 888                          le32_to_cpu(cck->early_overrun_err),
 889                          accum_cck->early_overrun_err,
 890                          delta_cck->early_overrun_err,
 891                          max_cck->early_overrun_err);
 892         pos += scnprintf(buf + pos, bufsz - pos,
 893                          fmt_table, "crc32_good:",
 894                          le32_to_cpu(cck->crc32_good), accum_cck->crc32_good,
 895                          delta_cck->crc32_good, max_cck->crc32_good);
 896         pos += scnprintf(buf + pos, bufsz - pos,
 897                          fmt_table, "false_alarm_cnt:",
 898                          le32_to_cpu(cck->false_alarm_cnt),
 899                          accum_cck->false_alarm_cnt,
 900                          delta_cck->false_alarm_cnt, max_cck->false_alarm_cnt);
 901         pos += scnprintf(buf + pos, bufsz - pos,
 902                          fmt_table, "fina_sync_err_cnt:",
 903                          le32_to_cpu(cck->fina_sync_err_cnt),
 904                          accum_cck->fina_sync_err_cnt,
 905                          delta_cck->fina_sync_err_cnt,
 906                          max_cck->fina_sync_err_cnt);
 907         pos += scnprintf(buf + pos, bufsz - pos,
 908                          fmt_table, "sfd_timeout:",
 909                          le32_to_cpu(cck->sfd_timeout),
 910                          accum_cck->sfd_timeout, delta_cck->sfd_timeout,
 911                          max_cck->sfd_timeout);
 912         pos += scnprintf(buf + pos, bufsz - pos,
 913                          fmt_table, "fina_timeout:",
 914                          le32_to_cpu(cck->fina_timeout),
 915                          accum_cck->fina_timeout, delta_cck->fina_timeout,
 916                          max_cck->fina_timeout);
 917         pos += scnprintf(buf + pos, bufsz - pos,
 918                          fmt_table, "unresponded_rts:",
 919                          le32_to_cpu(cck->unresponded_rts),
 920                          accum_cck->unresponded_rts, delta_cck->unresponded_rts,
 921                          max_cck->unresponded_rts);
 922         pos += scnprintf(buf + pos, bufsz - pos,
 923                          fmt_table, "rxe_frame_lmt_ovrun:",
 924                          le32_to_cpu(cck->rxe_frame_limit_overrun),
 925                          accum_cck->rxe_frame_limit_overrun,
 926                          delta_cck->rxe_frame_limit_overrun,
 927                          max_cck->rxe_frame_limit_overrun);
 928         pos += scnprintf(buf + pos, bufsz - pos,
 929                          fmt_table, "sent_ack_cnt:",
 930                          le32_to_cpu(cck->sent_ack_cnt),
 931                          accum_cck->sent_ack_cnt, delta_cck->sent_ack_cnt,
 932                          max_cck->sent_ack_cnt);
 933         pos += scnprintf(buf + pos, bufsz - pos,
 934                          fmt_table, "sent_cts_cnt:",
 935                          le32_to_cpu(cck->sent_cts_cnt),
 936                          accum_cck->sent_cts_cnt, delta_cck->sent_cts_cnt,
 937                          max_cck->sent_cts_cnt);
 938         pos += scnprintf(buf + pos, bufsz - pos,
 939                          fmt_table, "sent_ba_rsp_cnt:",
 940                          le32_to_cpu(cck->sent_ba_rsp_cnt),
 941                          accum_cck->sent_ba_rsp_cnt,
 942                          delta_cck->sent_ba_rsp_cnt,
 943                          max_cck->sent_ba_rsp_cnt);
 944         pos += scnprintf(buf + pos, bufsz - pos,
 945                          fmt_table, "dsp_self_kill:",
 946                          le32_to_cpu(cck->dsp_self_kill),
 947                          accum_cck->dsp_self_kill, delta_cck->dsp_self_kill,
 948                          max_cck->dsp_self_kill);
 949         pos += scnprintf(buf + pos, bufsz - pos,
 950                          fmt_table, "mh_format_err:",
 951                          le32_to_cpu(cck->mh_format_err),
 952                          accum_cck->mh_format_err, delta_cck->mh_format_err,
 953                          max_cck->mh_format_err);
 954         pos += scnprintf(buf + pos, bufsz - pos,
 955                          fmt_table, "re_acq_main_rssi_sum:",
 956                          le32_to_cpu(cck->re_acq_main_rssi_sum),
 957                          accum_cck->re_acq_main_rssi_sum,
 958                          delta_cck->re_acq_main_rssi_sum,
 959                          max_cck->re_acq_main_rssi_sum);
 960
 961         pos += scnprintf(buf + pos, bufsz - pos,
 962                          fmt_header, "Statistics_Rx - GENERAL:");
 963         pos += scnprintf(buf + pos, bufsz - pos,
 964                          fmt_table, "bogus_cts:",
 965                          le32_to_cpu(general->bogus_cts),
 966                          accum_general->bogus_cts, delta_general->bogus_cts,
 967                          max_general->bogus_cts);
 968         pos += scnprintf(buf + pos, bufsz - pos,
 969                          fmt_table, "bogus_ack:",
 970                          le32_to_cpu(general->bogus_ack),
 971                          accum_general->bogus_ack, delta_general->bogus_ack,
 972                          max_general->bogus_ack);
 973         pos += scnprintf(buf + pos, bufsz - pos,
 974                          fmt_table, "non_bssid_frames:",
 975                          le32_to_cpu(general->non_bssid_frames),
 976                          accum_general->non_bssid_frames,
 977                          delta_general->non_bssid_frames,
 978                          max_general->non_bssid_frames);
 979         pos += scnprintf(buf + pos, bufsz - pos,
 980                          fmt_table, "filtered_frames:",
 981                          le32_to_cpu(general->filtered_frames),
 982                          accum_general->filtered_frames,
 983                          delta_general->filtered_frames,
 984                          max_general->filtered_frames);
 985         pos += scnprintf(buf + pos, bufsz - pos,
 986                          fmt_table, "non_channel_beacons:",
 987                          le32_to_cpu(general->non_channel_beacons),
 988                          accum_general->non_channel_beacons,
 989                          delta_general->non_channel_beacons,
 990                          max_general->non_channel_beacons);
 991         pos += scnprintf(buf + pos, bufsz - pos,
 992                          fmt_table, "channel_beacons:",
 993                          le32_to_cpu(general->channel_beacons),
 994                          accum_general->channel_beacons,
 995                          delta_general->channel_beacons,
 996                          max_general->channel_beacons);
 997         pos += scnprintf(buf + pos, bufsz - pos,
 998                          fmt_table, "num_missed_bcon:",
 999                          le32_to_cpu(general->num_missed_bcon),
1000                          accum_general->num_missed_bcon,
1001                          delta_general->num_missed_bcon,
1002                          max_general->num_missed_bcon);
1003         pos += scnprintf(buf + pos, bufsz - pos,
1004                          fmt_table, "adc_rx_saturation_time:",
1005                          le32_to_cpu(general->adc_rx_saturation_time),
1006                          accum_general->adc_rx_saturation_time,
1007                          delta_general->adc_rx_saturation_time,
1008                          max_general->adc_rx_saturation_time);
1009         pos += scnprintf(buf + pos, bufsz - pos,
1010                          fmt_table, "ina_detect_search_tm:",
1011                          le32_to_cpu(general->ina_detection_search_time),
1012                          accum_general->ina_detection_search_time,
1013                          delta_general->ina_detection_search_time,
1014                          max_general->ina_detection_search_time);
1015         pos += scnprintf(buf + pos, bufsz - pos,
1016                          fmt_table, "beacon_silence_rssi_a:",
1017                          le32_to_cpu(general->beacon_silence_rssi_a),
1018                          accum_general->beacon_silence_rssi_a,
1019                          delta_general->beacon_silence_rssi_a,
1020                          max_general->beacon_silence_rssi_a);
1021         pos += scnprintf(buf + pos, bufsz - pos,
1022                          fmt_table, "beacon_silence_rssi_b:",
1023                          le32_to_cpu(general->beacon_silence_rssi_b),
1024                          accum_general->beacon_silence_rssi_b,
1025                          delta_general->beacon_silence_rssi_b,
1026                          max_general->beacon_silence_rssi_b);
1027         pos += scnprintf(buf + pos, bufsz - pos,
1028                          fmt_table, "beacon_silence_rssi_c:",
1029                          le32_to_cpu(general->beacon_silence_rssi_c),
1030                          accum_general->beacon_silence_rssi_c,
1031                          delta_general->beacon_silence_rssi_c,
1032                          max_general->beacon_silence_rssi_c);
1033         pos += scnprintf(buf + pos, bufsz - pos,
1034                          fmt_table, "interference_data_flag:",
1035                          le32_to_cpu(general->interference_data_flag),
1036                          accum_general->interference_data_flag,
1037                          delta_general->interference_data_flag,
1038                          max_general->interference_data_flag);
1039         pos += scnprintf(buf + pos, bufsz - pos,
1040                          fmt_table, "channel_load:",
1041                          le32_to_cpu(general->channel_load),
1042                          accum_general->channel_load,
1043                          delta_general->channel_load,
1044                          max_general->channel_load);
1045         pos += scnprintf(buf + pos, bufsz - pos,
1046                          fmt_table, "dsp_false_alarms:",
1047                          le32_to_cpu(general->dsp_false_alarms),
1048                          accum_general->dsp_false_alarms,
1049                          delta_general->dsp_false_alarms,
1050                          max_general->dsp_false_alarms);
1051         pos += scnprintf(buf + pos, bufsz - pos,
1052                          fmt_table, "beacon_rssi_a:",
1053                          le32_to_cpu(general->beacon_rssi_a),
1054                          accum_general->beacon_rssi_a,
1055                          delta_general->beacon_rssi_a,
1056                          max_general->beacon_rssi_a);
1057         pos += scnprintf(buf + pos, bufsz - pos,
1058                          fmt_table, "beacon_rssi_b:",
1059                          le32_to_cpu(general->beacon_rssi_b),
1060                          accum_general->beacon_rssi_b,
1061                          delta_general->beacon_rssi_b,
1062                          max_general->beacon_rssi_b);
1063         pos += scnprintf(buf + pos, bufsz - pos,
1064                          fmt_table, "beacon_rssi_c:",
1065                          le32_to_cpu(general->beacon_rssi_c),
1066                          accum_general->beacon_rssi_c,
1067                          delta_general->beacon_rssi_c,
1068                          max_general->beacon_rssi_c);
1069         pos += scnprintf(buf + pos, bufsz - pos,
1070                          fmt_table, "beacon_energy_a:",
1071                          le32_to_cpu(general->beacon_energy_a),
1072                          accum_general->beacon_energy_a,
1073                          delta_general->beacon_energy_a,
1074                          max_general->beacon_energy_a);
1075         pos += scnprintf(buf + pos, bufsz - pos,
1076                          fmt_table, "beacon_energy_b:",
1077                          le32_to_cpu(general->beacon_energy_b),
1078                          accum_general->beacon_energy_b,
1079                          delta_general->beacon_energy_b,
1080                          max_general->beacon_energy_b);
1081         pos += scnprintf(buf + pos, bufsz - pos,
1082                          fmt_table, "beacon_energy_c:",
1083                          le32_to_cpu(general->beacon_energy_c),
1084                          accum_general->beacon_energy_c,
1085                          delta_general->beacon_energy_c,
1086                          max_general->beacon_energy_c);
1087
1088         pos += scnprintf(buf + pos, bufsz - pos,
1089                          fmt_header, "Statistics_Rx - OFDM_HT:");
1090         pos += scnprintf(buf + pos, bufsz - pos,
1091                          fmt_table, "plcp_err:",
1092                          le32_to_cpu(ht->plcp_err), accum_ht->plcp_err,
1093                          delta_ht->plcp_err, max_ht->plcp_err);
1094         pos += scnprintf(buf + pos, bufsz - pos,
1095                          fmt_table, "overrun_err:",
1096                          le32_to_cpu(ht->overrun_err), accum_ht->overrun_err,
1097                          delta_ht->overrun_err, max_ht->overrun_err);
1098         pos += scnprintf(buf + pos, bufsz - pos,
1099                          fmt_table, "early_overrun_err:",
1100                          le32_to_cpu(ht->early_overrun_err),
1101                          accum_ht->early_overrun_err,
1102                          delta_ht->early_overrun_err,
1103                          max_ht->early_overrun_err);
1104         pos += scnprintf(buf + pos, bufsz - pos,
1105                          fmt_table, "crc32_good:",
1106                          le32_to_cpu(ht->crc32_good), accum_ht->crc32_good,
1107                          delta_ht->crc32_good, max_ht->crc32_good);
1108         pos += scnprintf(buf + pos, bufsz - pos,
1109                          fmt_table, "crc32_err:",
1110                          le32_to_cpu(ht->crc32_err), accum_ht->crc32_err,
1111                          delta_ht->crc32_err, max_ht->crc32_err);
1112         pos += scnprintf(buf + pos, bufsz - pos,
1113                          fmt_table, "mh_format_err:",
1114                          le32_to_cpu(ht->mh_format_err),
1115                          accum_ht->mh_format_err,
1116                          delta_ht->mh_format_err, max_ht->mh_format_err);
1117         pos += scnprintf(buf + pos, bufsz - pos,
1118                          fmt_table, "agg_crc32_good:",
1119                          le32_to_cpu(ht->agg_crc32_good),
1120                          accum_ht->agg_crc32_good,
1121                          delta_ht->agg_crc32_good, max_ht->agg_crc32_good);
1122         pos += scnprintf(buf + pos, bufsz - pos,
1123                          fmt_table, "agg_mpdu_cnt:",
1124                          le32_to_cpu(ht->agg_mpdu_cnt),
1125                          accum_ht->agg_mpdu_cnt,
1126                          delta_ht->agg_mpdu_cnt, max_ht->agg_mpdu_cnt);
1127         pos += scnprintf(buf + pos, bufsz - pos,
1128                          fmt_table, "agg_cnt:",
1129                          le32_to_cpu(ht->agg_cnt), accum_ht->agg_cnt,
1130                          delta_ht->agg_cnt, max_ht->agg_cnt);
1131         pos += scnprintf(buf + pos, bufsz - pos,
1132                          fmt_table, "unsupport_mcs:",
1133                          le32_to_cpu(ht->unsupport_mcs),
1134                          accum_ht->unsupport_mcs,
1135                          delta_ht->unsupport_mcs, max_ht->unsupport_mcs);
1136
1137         spin_unlock_bh(&priv->statistics.lock);
1138
1139         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1140         kfree(buf);
1141         return ret;
1142 }
1143
1144 static ssize_t iwl_dbgfs_ucode_tx_stats_read(struct file *file,
1145                                         char __user *user_buf,
1146                                         size_t count, loff_t *ppos)
1147 {
1148         struct iwl_priv *priv = file->private_data;
1149         int pos = 0;
1150         char *buf;
1151         int bufsz = (sizeof(struct statistics_tx) * 48) + 250;
1152         ssize_t ret;
1153         struct statistics_tx *tx, *accum_tx, *delta_tx, *max_tx;
1154
1155         if (!iwl_is_alive(priv))
1156                 return -EAGAIN;
1157
1158         buf = kzalloc(bufsz, GFP_KERNEL);
1159         if (!buf)
1160                 return -ENOMEM;
1161
1162         /* the statistic information display here is based on
1163          * the last statistics notification from uCode
1164          * might not reflect the current uCode activity
1165          */
1166         spin_lock_bh(&priv->statistics.lock);
1167
1168         tx = &priv->statistics.tx;
1169         accum_tx = &priv->accum_stats.tx;
1170         delta_tx = &priv->delta_stats.tx;
1171         max_tx = &priv->max_delta_stats.tx;
1172
1173         pos += iwl_statistics_flag(priv, buf, bufsz);
1174         pos += scnprintf(buf + pos, bufsz - pos,
1175                          fmt_header, "Statistics_Tx:");
1176         pos += scnprintf(buf + pos, bufsz - pos,
1177                          fmt_table, "preamble:",
1178                          le32_to_cpu(tx->preamble_cnt),
1179                          accum_tx->preamble_cnt,
1180                          delta_tx->preamble_cnt, max_tx->preamble_cnt);
1181         pos += scnprintf(buf + pos, bufsz - pos,
1182                          fmt_table, "rx_detected_cnt:",
1183                          le32_to_cpu(tx->rx_detected_cnt),
1184                          accum_tx->rx_detected_cnt,
1185                          delta_tx->rx_detected_cnt, max_tx->rx_detected_cnt);
1186         pos += scnprintf(buf + pos, bufsz - pos,
1187                          fmt_table, "bt_prio_defer_cnt:",
1188                          le32_to_cpu(tx->bt_prio_defer_cnt),
1189                          accum_tx->bt_prio_defer_cnt,
1190                          delta_tx->bt_prio_defer_cnt,
1191                          max_tx->bt_prio_defer_cnt);
1192         pos += scnprintf(buf + pos, bufsz - pos,
1193                          fmt_table, "bt_prio_kill_cnt:",
1194                          le32_to_cpu(tx->bt_prio_kill_cnt),
1195                          accum_tx->bt_prio_kill_cnt,
1196                          delta_tx->bt_prio_kill_cnt,
1197                          max_tx->bt_prio_kill_cnt);
1198         pos += scnprintf(buf + pos, bufsz - pos,
1199                          fmt_table, "few_bytes_cnt:",
1200                          le32_to_cpu(tx->few_bytes_cnt),
1201                          accum_tx->few_bytes_cnt,
1202                          delta_tx->few_bytes_cnt, max_tx->few_bytes_cnt);
1203         pos += scnprintf(buf + pos, bufsz - pos,
1204                          fmt_table, "cts_timeout:",
1205                          le32_to_cpu(tx->cts_timeout), accum_tx->cts_timeout,
1206                          delta_tx->cts_timeout, max_tx->cts_timeout);
1207         pos += scnprintf(buf + pos, bufsz - pos,
1208                          fmt_table, "ack_timeout:",
1209                          le32_to_cpu(tx->ack_timeout),
1210                          accum_tx->ack_timeout,
1211                          delta_tx->ack_timeout, max_tx->ack_timeout);
1212         pos += scnprintf(buf + pos, bufsz - pos,
1213                          fmt_table, "expected_ack_cnt:",
1214                          le32_to_cpu(tx->expected_ack_cnt),
1215                          accum_tx->expected_ack_cnt,
1216                          delta_tx->expected_ack_cnt,
1217                          max_tx->expected_ack_cnt);
1218         pos += scnprintf(buf + pos, bufsz - pos,
1219                          fmt_table, "actual_ack_cnt:",
1220                          le32_to_cpu(tx->actual_ack_cnt),
1221                          accum_tx->actual_ack_cnt,
1222                          delta_tx->actual_ack_cnt,
1223                          max_tx->actual_ack_cnt);
1224         pos += scnprintf(buf + pos, bufsz - pos,
1225                          fmt_table, "dump_msdu_cnt:",
1226                          le32_to_cpu(tx->dump_msdu_cnt),
1227                          accum_tx->dump_msdu_cnt,
1228                          delta_tx->dump_msdu_cnt,
1229                          max_tx->dump_msdu_cnt);
1230         pos += scnprintf(buf + pos, bufsz - pos,
1231                          fmt_table, "abort_nxt_frame_mismatch:",
1232                          le32_to_cpu(tx->burst_abort_next_frame_mismatch_cnt),
1233                          accum_tx->burst_abort_next_frame_mismatch_cnt,
1234                          delta_tx->burst_abort_next_frame_mismatch_cnt,
1235                          max_tx->burst_abort_next_frame_mismatch_cnt);
1236         pos += scnprintf(buf + pos, bufsz - pos,
1237                          fmt_table, "abort_missing_nxt_frame:",
1238                          le32_to_cpu(tx->burst_abort_missing_next_frame_cnt),
1239                          accum_tx->burst_abort_missing_next_frame_cnt,
1240                          delta_tx->burst_abort_missing_next_frame_cnt,
1241                          max_tx->burst_abort_missing_next_frame_cnt);
1242         pos += scnprintf(buf + pos, bufsz - pos,
1243                          fmt_table, "cts_timeout_collision:",
1244                          le32_to_cpu(tx->cts_timeout_collision),
1245                          accum_tx->cts_timeout_collision,
1246                          delta_tx->cts_timeout_collision,
1247                          max_tx->cts_timeout_collision);
1248         pos += scnprintf(buf + pos, bufsz - pos,
1249                          fmt_table, "ack_ba_timeout_collision:",
1250                          le32_to_cpu(tx->ack_or_ba_timeout_collision),
1251                          accum_tx->ack_or_ba_timeout_collision,
1252                          delta_tx->ack_or_ba_timeout_collision,
1253                          max_tx->ack_or_ba_timeout_collision);
1254         pos += scnprintf(buf + pos, bufsz - pos,
1255                          fmt_table, "agg ba_timeout:",
1256                          le32_to_cpu(tx->agg.ba_timeout),
1257                          accum_tx->agg.ba_timeout,
1258                          delta_tx->agg.ba_timeout,
1259                          max_tx->agg.ba_timeout);
1260         pos += scnprintf(buf + pos, bufsz - pos,
1261                          fmt_table, "agg ba_resched_frames:",
1262                          le32_to_cpu(tx->agg.ba_reschedule_frames),
1263                          accum_tx->agg.ba_reschedule_frames,
1264                          delta_tx->agg.ba_reschedule_frames,
1265                          max_tx->agg.ba_reschedule_frames);
1266         pos += scnprintf(buf + pos, bufsz - pos,
1267                          fmt_table, "agg scd_query_agg_frame:",
1268                          le32_to_cpu(tx->agg.scd_query_agg_frame_cnt),
1269                          accum_tx->agg.scd_query_agg_frame_cnt,
1270                          delta_tx->agg.scd_query_agg_frame_cnt,
1271                          max_tx->agg.scd_query_agg_frame_cnt);
1272         pos += scnprintf(buf + pos, bufsz - pos,
1273                          fmt_table, "agg scd_query_no_agg:",
1274                          le32_to_cpu(tx->agg.scd_query_no_agg),
1275                          accum_tx->agg.scd_query_no_agg,
1276                          delta_tx->agg.scd_query_no_agg,
1277                          max_tx->agg.scd_query_no_agg);
1278         pos += scnprintf(buf + pos, bufsz - pos,
1279                          fmt_table, "agg scd_query_agg:",
1280                          le32_to_cpu(tx->agg.scd_query_agg),
1281                          accum_tx->agg.scd_query_agg,
1282                          delta_tx->agg.scd_query_agg,
1283                          max_tx->agg.scd_query_agg);
1284         pos += scnprintf(buf + pos, bufsz - pos,
1285                          fmt_table, "agg scd_query_mismatch:",
1286                          le32_to_cpu(tx->agg.scd_query_mismatch),
1287                          accum_tx->agg.scd_query_mismatch,
1288                          delta_tx->agg.scd_query_mismatch,
1289                          max_tx->agg.scd_query_mismatch);
1290         pos += scnprintf(buf + pos, bufsz - pos,
1291                          fmt_table, "agg frame_not_ready:",
1292                          le32_to_cpu(tx->agg.frame_not_ready),
1293                          accum_tx->agg.frame_not_ready,
1294                          delta_tx->agg.frame_not_ready,
1295                          max_tx->agg.frame_not_ready);
1296         pos += scnprintf(buf + pos, bufsz - pos,
1297                          fmt_table, "agg underrun:",
1298                          le32_to_cpu(tx->agg.underrun),
1299                          accum_tx->agg.underrun,
1300                          delta_tx->agg.underrun, max_tx->agg.underrun);
1301         pos += scnprintf(buf + pos, bufsz - pos,
1302                          fmt_table, "agg bt_prio_kill:",
1303                          le32_to_cpu(tx->agg.bt_prio_kill),
1304                          accum_tx->agg.bt_prio_kill,
1305                          delta_tx->agg.bt_prio_kill,
1306                          max_tx->agg.bt_prio_kill);
1307         pos += scnprintf(buf + pos, bufsz - pos,
1308                          fmt_table, "agg rx_ba_rsp_cnt:",
1309                          le32_to_cpu(tx->agg.rx_ba_rsp_cnt),
1310                          accum_tx->agg.rx_ba_rsp_cnt,
1311                          delta_tx->agg.rx_ba_rsp_cnt,
1312                          max_tx->agg.rx_ba_rsp_cnt);
1313
1314         if (tx->tx_power.ant_a || tx->tx_power.ant_b || tx->tx_power.ant_c) {
1315                 pos += scnprintf(buf + pos, bufsz - pos,
1316                         "tx power: (1/2 dB step)\n");
1317                 if ((priv->nvm_data->valid_tx_ant & ANT_A) &&
1318                     tx->tx_power.ant_a)
1319                         pos += scnprintf(buf + pos, bufsz - pos,
1320                                         fmt_hex, "antenna A:",
1321                                         tx->tx_power.ant_a);
1322                 if ((priv->nvm_data->valid_tx_ant & ANT_B) &&
1323                     tx->tx_power.ant_b)
1324                         pos += scnprintf(buf + pos, bufsz - pos,
1325                                         fmt_hex, "antenna B:",
1326                                         tx->tx_power.ant_b);
1327                 if ((priv->nvm_data->valid_tx_ant & ANT_C) &&
1328                     tx->tx_power.ant_c)
1329                         pos += scnprintf(buf + pos, bufsz - pos,
1330                                         fmt_hex, "antenna C:",
1331                                         tx->tx_power.ant_c);
1332         }
1333
1334         spin_unlock_bh(&priv->statistics.lock);
1335
1336         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1337         kfree(buf);
1338         return ret;
1339 }
1340
1341 static ssize_t iwl_dbgfs_ucode_general_stats_read(struct file *file,
1342                                         char __user *user_buf,
1343                                         size_t count, loff_t *ppos)
1344 {
1345         struct iwl_priv *priv = file->private_data;
1346         int pos = 0;
1347         char *buf;
1348         int bufsz = sizeof(struct statistics_general) * 10 + 300;
1349         ssize_t ret;
1350         struct statistics_general_common *general, *accum_general;
1351         struct statistics_general_common *delta_general, *max_general;
1352         struct statistics_dbg *dbg, *accum_dbg, *delta_dbg, *max_dbg;
1353         struct statistics_div *div, *accum_div, *delta_div, *max_div;
1354
1355         if (!iwl_is_alive(priv))
1356                 return -EAGAIN;
1357
1358         buf = kzalloc(bufsz, GFP_KERNEL);
1359         if (!buf)
1360                 return -ENOMEM;
1361
1362         /* the statistic information display here is based on
1363          * the last statistics notification from uCode
1364          * might not reflect the current uCode activity
1365          */
1366
1367         spin_lock_bh(&priv->statistics.lock);
1368
1369         general = &priv->statistics.common;
1370         dbg = &priv->statistics.common.dbg;
1371         div = &priv->statistics.common.div;
1372         accum_general = &priv->accum_stats.common;
1373         accum_dbg = &priv->accum_stats.common.dbg;
1374         accum_div = &priv->accum_stats.common.div;
1375         delta_general = &priv->delta_stats.common;
1376         max_general = &priv->max_delta_stats.common;
1377         delta_dbg = &priv->delta_stats.common.dbg;
1378         max_dbg = &priv->max_delta_stats.common.dbg;
1379         delta_div = &priv->delta_stats.common.div;
1380         max_div = &priv->max_delta_stats.common.div;
1381
1382         pos += iwl_statistics_flag(priv, buf, bufsz);
1383         pos += scnprintf(buf + pos, bufsz - pos,
1384                          fmt_header, "Statistics_General:");
1385         pos += scnprintf(buf + pos, bufsz - pos,
1386                          fmt_value, "temperature:",
1387                          le32_to_cpu(general->temperature));
1388         pos += scnprintf(buf + pos, bufsz - pos,
1389                          fmt_value, "temperature_m:",
1390                          le32_to_cpu(general->temperature_m));
1391         pos += scnprintf(buf + pos, bufsz - pos,
1392                          fmt_value, "ttl_timestamp:",
1393                          le32_to_cpu(general->ttl_timestamp));
1394         pos += scnprintf(buf + pos, bufsz - pos,
1395                          fmt_table, "burst_check:",
1396                          le32_to_cpu(dbg->burst_check),
1397                          accum_dbg->burst_check,
1398                          delta_dbg->burst_check, max_dbg->burst_check);
1399         pos += scnprintf(buf + pos, bufsz - pos,
1400                          fmt_table, "burst_count:",
1401                          le32_to_cpu(dbg->burst_count),
1402                          accum_dbg->burst_count,
1403                          delta_dbg->burst_count, max_dbg->burst_count);
1404         pos += scnprintf(buf + pos, bufsz - pos,
1405                          fmt_table, "wait_for_silence_timeout_count:",
1406                          le32_to_cpu(dbg->wait_for_silence_timeout_cnt),
1407                          accum_dbg->wait_for_silence_timeout_cnt,
1408                          delta_dbg->wait_for_silence_timeout_cnt,
1409                          max_dbg->wait_for_silence_timeout_cnt);
1410         pos += scnprintf(buf + pos, bufsz - pos,
1411                          fmt_table, "sleep_time:",
1412                          le32_to_cpu(general->sleep_time),
1413                          accum_general->sleep_time,
1414                          delta_general->sleep_time, max_general->sleep_time);
1415         pos += scnprintf(buf + pos, bufsz - pos,
1416                          fmt_table, "slots_out:",
1417                          le32_to_cpu(general->slots_out),
1418                          accum_general->slots_out,
1419                          delta_general->slots_out, max_general->slots_out);
1420         pos += scnprintf(buf + pos, bufsz - pos,
1421                          fmt_table, "slots_idle:",
1422                          le32_to_cpu(general->slots_idle),
1423                          accum_general->slots_idle,
1424                          delta_general->slots_idle, max_general->slots_idle);
1425         pos += scnprintf(buf + pos, bufsz - pos,
1426                          fmt_table, "tx_on_a:",
1427                          le32_to_cpu(div->tx_on_a), accum_div->tx_on_a,
1428                          delta_div->tx_on_a, max_div->tx_on_a);
1429         pos += scnprintf(buf + pos, bufsz - pos,
1430                          fmt_table, "tx_on_b:",
1431                          le32_to_cpu(div->tx_on_b), accum_div->tx_on_b,
1432                          delta_div->tx_on_b, max_div->tx_on_b);
1433         pos += scnprintf(buf + pos, bufsz - pos,
1434                          fmt_table, "exec_time:",
1435                          le32_to_cpu(div->exec_time), accum_div->exec_time,
1436                          delta_div->exec_time, max_div->exec_time);
1437         pos += scnprintf(buf + pos, bufsz - pos,
1438                          fmt_table, "probe_time:",
1439                          le32_to_cpu(div->probe_time), accum_div->probe_time,
1440                          delta_div->probe_time, max_div->probe_time);
1441         pos += scnprintf(buf + pos, bufsz - pos,
1442                          fmt_table, "rx_enable_counter:",
1443                          le32_to_cpu(general->rx_enable_counter),
1444                          accum_general->rx_enable_counter,
1445                          delta_general->rx_enable_counter,
1446                          max_general->rx_enable_counter);
1447         pos += scnprintf(buf + pos, bufsz - pos,
1448                          fmt_table, "num_of_sos_states:",
1449                          le32_to_cpu(general->num_of_sos_states),
1450                          accum_general->num_of_sos_states,
1451                          delta_general->num_of_sos_states,
1452                          max_general->num_of_sos_states);
1453
1454         spin_unlock_bh(&priv->statistics.lock);
1455
1456         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1457         kfree(buf);
1458         return ret;
1459 }
1460
1461 static ssize_t iwl_dbgfs_ucode_bt_stats_read(struct file *file,
1462                                         char __user *user_buf,
1463                                         size_t count, loff_t *ppos)
1464 {
1465         struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
1466         int pos = 0;
1467         char *buf;
1468         int bufsz = (sizeof(struct statistics_bt_activity) * 24) + 200;
1469         ssize_t ret;
1470         struct statistics_bt_activity *bt, *accum_bt;
1471
1472         if (!iwl_is_alive(priv))
1473                 return -EAGAIN;
1474
1475         if (!priv->bt_enable_flag)
1476                 return -EINVAL;
1477
1478         /* make request to uCode to retrieve statistics information */
1479         mutex_lock(&priv->mutex);
1480         ret = iwl_send_statistics_request(priv, 0, false);
1481         mutex_unlock(&priv->mutex);
1482
1483         if (ret)
1484                 return -EAGAIN;
1485         buf = kzalloc(bufsz, GFP_KERNEL);
1486         if (!buf)
1487                 return -ENOMEM;
1488
1489         /*
1490          * the statistic information display here is based on
1491          * the last statistics notification from uCode
1492          * might not reflect the current uCode activity
1493          */
1494
1495         spin_lock_bh(&priv->statistics.lock);
1496
1497         bt = &priv->statistics.bt_activity;
1498         accum_bt = &priv->accum_stats.bt_activity;
1499
1500         pos += iwl_statistics_flag(priv, buf, bufsz);
1501         pos += scnprintf(buf + pos, bufsz - pos, "Statistics_BT:\n");
1502         pos += scnprintf(buf + pos, bufsz - pos,
1503                         "\t\t\tcurrent\t\t\taccumulative\n");
1504         pos += scnprintf(buf + pos, bufsz - pos,
1505                          "hi_priority_tx_req_cnt:\t\t%u\t\t\t%u\n",
1506                          le32_to_cpu(bt->hi_priority_tx_req_cnt),
1507                          accum_bt->hi_priority_tx_req_cnt);
1508         pos += scnprintf(buf + pos, bufsz - pos,
1509                          "hi_priority_tx_denied_cnt:\t%u\t\t\t%u\n",
1510                          le32_to_cpu(bt->hi_priority_tx_denied_cnt),
1511                          accum_bt->hi_priority_tx_denied_cnt);
1512         pos += scnprintf(buf + pos, bufsz - pos,
1513                          "lo_priority_tx_req_cnt:\t\t%u\t\t\t%u\n",
1514                          le32_to_cpu(bt->lo_priority_tx_req_cnt),
1515                          accum_bt->lo_priority_tx_req_cnt);
1516         pos += scnprintf(buf + pos, bufsz - pos,
1517                          "lo_priority_tx_denied_cnt:\t%u\t\t\t%u\n",
1518                          le32_to_cpu(bt->lo_priority_tx_denied_cnt),
1519                          accum_bt->lo_priority_tx_denied_cnt);
1520         pos += scnprintf(buf + pos, bufsz - pos,
1521                          "hi_priority_rx_req_cnt:\t\t%u\t\t\t%u\n",
1522                          le32_to_cpu(bt->hi_priority_rx_req_cnt),
1523                          accum_bt->hi_priority_rx_req_cnt);
1524         pos += scnprintf(buf + pos, bufsz - pos,
1525                          "hi_priority_rx_denied_cnt:\t%u\t\t\t%u\n",
1526                          le32_to_cpu(bt->hi_priority_rx_denied_cnt),
1527                          accum_bt->hi_priority_rx_denied_cnt);
1528         pos += scnprintf(buf + pos, bufsz - pos,
1529                          "lo_priority_rx_req_cnt:\t\t%u\t\t\t%u\n",
1530                          le32_to_cpu(bt->lo_priority_rx_req_cnt),
1531                          accum_bt->lo_priority_rx_req_cnt);
1532         pos += scnprintf(buf + pos, bufsz - pos,
1533                          "lo_priority_rx_denied_cnt:\t%u\t\t\t%u\n",
1534                          le32_to_cpu(bt->lo_priority_rx_denied_cnt),
1535                          accum_bt->lo_priority_rx_denied_cnt);
1536
1537         pos += scnprintf(buf + pos, bufsz - pos,
1538                          "(rx)num_bt_kills:\t\t%u\t\t\t%u\n",
1539                          le32_to_cpu(priv->statistics.num_bt_kills),
1540                          priv->statistics.accum_num_bt_kills);
1541
1542         spin_unlock_bh(&priv->statistics.lock);
1543
1544         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1545         kfree(buf);
1546         return ret;
1547 }
1548
1549 static ssize_t iwl_dbgfs_reply_tx_error_read(struct file *file,
1550                                         char __user *user_buf,
1551                                         size_t count, loff_t *ppos)
1552 {
1553         struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
1554         int pos = 0;
1555         char *buf;
1556         int bufsz = (sizeof(struct reply_tx_error_statistics) * 24) +
1557                 (sizeof(struct reply_agg_tx_error_statistics) * 24) + 200;
1558         ssize_t ret;
1559
1560         if (!iwl_is_alive(priv))
1561                 return -EAGAIN;
1562
1563         buf = kzalloc(bufsz, GFP_KERNEL);
1564         if (!buf)
1565                 return -ENOMEM;
1566
1567         pos += scnprintf(buf + pos, bufsz - pos, "Statistics_TX_Error:\n");
1568         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t\t%u\n",
1569                          iwl_get_tx_fail_reason(TX_STATUS_POSTPONE_DELAY),
1570                          priv->reply_tx_stats.pp_delay);
1571         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1572                          iwl_get_tx_fail_reason(TX_STATUS_POSTPONE_FEW_BYTES),
1573                          priv->reply_tx_stats.pp_few_bytes);
1574         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1575                          iwl_get_tx_fail_reason(TX_STATUS_POSTPONE_BT_PRIO),
1576                          priv->reply_tx_stats.pp_bt_prio);
1577         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1578                          iwl_get_tx_fail_reason(TX_STATUS_POSTPONE_QUIET_PERIOD),
1579                          priv->reply_tx_stats.pp_quiet_period);
1580         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1581                          iwl_get_tx_fail_reason(TX_STATUS_POSTPONE_CALC_TTAK),
1582                          priv->reply_tx_stats.pp_calc_ttak);
1583         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t%u\n",
1584                          iwl_get_tx_fail_reason(
1585                                 TX_STATUS_FAIL_INTERNAL_CROSSED_RETRY),
1586                          priv->reply_tx_stats.int_crossed_retry);
1587         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1588                          iwl_get_tx_fail_reason(TX_STATUS_FAIL_SHORT_LIMIT),
1589                          priv->reply_tx_stats.short_limit);
1590         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1591                          iwl_get_tx_fail_reason(TX_STATUS_FAIL_LONG_LIMIT),
1592                          priv->reply_tx_stats.long_limit);
1593         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1594                          iwl_get_tx_fail_reason(TX_STATUS_FAIL_FIFO_UNDERRUN),
1595                          priv->reply_tx_stats.fifo_underrun);
1596         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1597                          iwl_get_tx_fail_reason(TX_STATUS_FAIL_DRAIN_FLOW),
1598                          priv->reply_tx_stats.drain_flow);
1599         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1600                          iwl_get_tx_fail_reason(TX_STATUS_FAIL_RFKILL_FLUSH),
1601                          priv->reply_tx_stats.rfkill_flush);
1602         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1603                          iwl_get_tx_fail_reason(TX_STATUS_FAIL_LIFE_EXPIRE),
1604                          priv->reply_tx_stats.life_expire);
1605         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1606                          iwl_get_tx_fail_reason(TX_STATUS_FAIL_DEST_PS),
1607                          priv->reply_tx_stats.dest_ps);
1608         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1609                          iwl_get_tx_fail_reason(TX_STATUS_FAIL_HOST_ABORTED),
1610                          priv->reply_tx_stats.host_abort);
1611         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1612                          iwl_get_tx_fail_reason(TX_STATUS_FAIL_BT_RETRY),
1613                          priv->reply_tx_stats.pp_delay);
1614         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1615                          iwl_get_tx_fail_reason(TX_STATUS_FAIL_STA_INVALID),
1616                          priv->reply_tx_stats.sta_invalid);
1617         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1618                          iwl_get_tx_fail_reason(TX_STATUS_FAIL_FRAG_DROPPED),
1619                          priv->reply_tx_stats.frag_drop);
1620         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1621                          iwl_get_tx_fail_reason(TX_STATUS_FAIL_TID_DISABLE),
1622                          priv->reply_tx_stats.tid_disable);
1623         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1624                          iwl_get_tx_fail_reason(TX_STATUS_FAIL_FIFO_FLUSHED),
1625                          priv->reply_tx_stats.fifo_flush);
1626         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t%u\n",
1627                          iwl_get_tx_fail_reason(
1628                                 TX_STATUS_FAIL_INSUFFICIENT_CF_POLL),
1629                          priv->reply_tx_stats.insuff_cf_poll);
1630         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1631                          iwl_get_tx_fail_reason(TX_STATUS_FAIL_PASSIVE_NO_RX),
1632                          priv->reply_tx_stats.fail_hw_drop);
1633         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t%u\n",
1634                          iwl_get_tx_fail_reason(
1635                                 TX_STATUS_FAIL_NO_BEACON_ON_RADAR),
1636                          priv->reply_tx_stats.sta_color_mismatch);
1637         pos += scnprintf(buf + pos, bufsz - pos, "UNKNOWN:\t\t\t%u\n",
1638                          priv->reply_tx_stats.unknown);
1639
1640         pos += scnprintf(buf + pos, bufsz - pos,
1641                          "\nStatistics_Agg_TX_Error:\n");
1642
1643         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1644                          iwl_get_agg_tx_fail_reason(AGG_TX_STATE_UNDERRUN_MSK),
1645                          priv->reply_agg_tx_stats.underrun);
1646         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1647                          iwl_get_agg_tx_fail_reason(AGG_TX_STATE_BT_PRIO_MSK),
1648                          priv->reply_agg_tx_stats.bt_prio);
1649         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1650                          iwl_get_agg_tx_fail_reason(AGG_TX_STATE_FEW_BYTES_MSK),
1651                          priv->reply_agg_tx_stats.few_bytes);
1652         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1653                          iwl_get_agg_tx_fail_reason(AGG_TX_STATE_ABORT_MSK),
1654                          priv->reply_agg_tx_stats.abort);
1655         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t%u\n",
1656                          iwl_get_agg_tx_fail_reason(
1657                                 AGG_TX_STATE_LAST_SENT_TTL_MSK),
1658                          priv->reply_agg_tx_stats.last_sent_ttl);
1659         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t%u\n",
1660                          iwl_get_agg_tx_fail_reason(
1661                                 AGG_TX_STATE_LAST_SENT_TRY_CNT_MSK),
1662                          priv->reply_agg_tx_stats.last_sent_try);
1663         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t%u\n",
1664                          iwl_get_agg_tx_fail_reason(
1665                                 AGG_TX_STATE_LAST_SENT_BT_KILL_MSK),
1666                          priv->reply_agg_tx_stats.last_sent_bt_kill);
1667         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1668                          iwl_get_agg_tx_fail_reason(AGG_TX_STATE_SCD_QUERY_MSK),
1669                          priv->reply_agg_tx_stats.scd_query);
1670         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t%u\n",
1671                          iwl_get_agg_tx_fail_reason(
1672                                 AGG_TX_STATE_TEST_BAD_CRC32_MSK),
1673                          priv->reply_agg_tx_stats.bad_crc32);
1674         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1675                          iwl_get_agg_tx_fail_reason(AGG_TX_STATE_RESPONSE_MSK),
1676                          priv->reply_agg_tx_stats.response);
1677         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1678                          iwl_get_agg_tx_fail_reason(AGG_TX_STATE_DUMP_TX_MSK),
1679                          priv->reply_agg_tx_stats.dump_tx);
1680         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1681                          iwl_get_agg_tx_fail_reason(AGG_TX_STATE_DELAY_TX_MSK),
1682                          priv->reply_agg_tx_stats.delay_tx);
1683         pos += scnprintf(buf + pos, bufsz - pos, "UNKNOWN:\t\t\t%u\n",
1684                          priv->reply_agg_tx_stats.unknown);
1685
1686         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1687         kfree(buf);
1688         return ret;
1689 }
1690
1691 static ssize_t iwl_dbgfs_sensitivity_read(struct file *file,
1692                                         char __user *user_buf,
1693                                         size_t count, loff_t *ppos) {
1694
1695         struct iwl_priv *priv = file->private_data;
1696         int pos = 0;
1697         int cnt = 0;
1698         char *buf;
1699         int bufsz = sizeof(struct iwl_sensitivity_data) * 4 + 100;
1700         ssize_t ret;
1701         struct iwl_sensitivity_data *data;
1702
1703         data = &priv->sensitivity_data;
1704         buf = kzalloc(bufsz, GFP_KERNEL);
1705         if (!buf)
1706                 return -ENOMEM;
1707
1708         pos += scnprintf(buf + pos, bufsz - pos, "auto_corr_ofdm:\t\t\t %u\n",
1709                         data->auto_corr_ofdm);
1710         pos += scnprintf(buf + pos, bufsz - pos,
1711                         "auto_corr_ofdm_mrc:\t\t %u\n",
1712                         data->auto_corr_ofdm_mrc);
1713         pos += scnprintf(buf + pos, bufsz - pos, "auto_corr_ofdm_x1:\t\t %u\n",
1714                         data->auto_corr_ofdm_x1);
1715         pos += scnprintf(buf + pos, bufsz - pos,
1716                         "auto_corr_ofdm_mrc_x1:\t\t %u\n",
1717                         data->auto_corr_ofdm_mrc_x1);
1718         pos += scnprintf(buf + pos, bufsz - pos, "auto_corr_cck:\t\t\t %u\n",
1719                         data->auto_corr_cck);
1720         pos += scnprintf(buf + pos, bufsz - pos, "auto_corr_cck_mrc:\t\t %u\n",
1721                         data->auto_corr_cck_mrc);
1722         pos += scnprintf(buf + pos, bufsz - pos,
1723                         "last_bad_plcp_cnt_ofdm:\t\t %u\n",
1724                         data->last_bad_plcp_cnt_ofdm);
1725         pos += scnprintf(buf + pos, bufsz - pos, "last_fa_cnt_ofdm:\t\t %u\n",
1726                         data->last_fa_cnt_ofdm);
1727         pos += scnprintf(buf + pos, bufsz - pos,
1728                         "last_bad_plcp_cnt_cck:\t\t %u\n",
1729                         data->last_bad_plcp_cnt_cck);
1730         pos += scnprintf(buf + pos, bufsz - pos, "last_fa_cnt_cck:\t\t %u\n",
1731                         data->last_fa_cnt_cck);
1732         pos += scnprintf(buf + pos, bufsz - pos, "nrg_curr_state:\t\t\t %u\n",
1733                         data->nrg_curr_state);
1734         pos += scnprintf(buf + pos, bufsz - pos, "nrg_prev_state:\t\t\t %u\n",
1735                         data->nrg_prev_state);
1736         pos += scnprintf(buf + pos, bufsz - pos, "nrg_value:\t\t\t");
1737         for (cnt = 0; cnt < 10; cnt++) {
1738                 pos += scnprintf(buf + pos, bufsz - pos, " %u",
1739                                 data->nrg_value[cnt]);
1740         }
1741         pos += scnprintf(buf + pos, bufsz - pos, "\n");
1742         pos += scnprintf(buf + pos, bufsz - pos, "nrg_silence_rssi:\t\t");
1743         for (cnt = 0; cnt < NRG_NUM_PREV_STAT_L; cnt++) {
1744                 pos += scnprintf(buf + pos, bufsz - pos, " %u",
1745                                 data->nrg_silence_rssi[cnt]);
1746         }
1747         pos += scnprintf(buf + pos, bufsz - pos, "\n");
1748         pos += scnprintf(buf + pos, bufsz - pos, "nrg_silence_ref:\t\t %u\n",
1749                         data->nrg_silence_ref);
1750         pos += scnprintf(buf + pos, bufsz - pos, "nrg_energy_idx:\t\t\t %u\n",
1751                         data->nrg_energy_idx);
1752         pos += scnprintf(buf + pos, bufsz - pos, "nrg_silence_idx:\t\t %u\n",
1753                         data->nrg_silence_idx);
1754         pos += scnprintf(buf + pos, bufsz - pos, "nrg_th_cck:\t\t\t %u\n",
1755                         data->nrg_th_cck);
1756         pos += scnprintf(buf + pos, bufsz - pos,
1757                         "nrg_auto_corr_silence_diff:\t %u\n",
1758                         data->nrg_auto_corr_silence_diff);
1759         pos += scnprintf(buf + pos, bufsz - pos, "num_in_cck_no_fa:\t\t %u\n",
1760                         data->num_in_cck_no_fa);
1761         pos += scnprintf(buf + pos, bufsz - pos, "nrg_th_ofdm:\t\t\t %u\n",
1762                         data->nrg_th_ofdm);
1763
1764         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1765         kfree(buf);
1766         return ret;
1767 }
1768
1769
1770 static ssize_t iwl_dbgfs_chain_noise_read(struct file *file,
1771                                         char __user *user_buf,
1772                                         size_t count, loff_t *ppos) {
1773
1774         struct iwl_priv *priv = file->private_data;
1775         int pos = 0;
1776         int cnt = 0;
1777         char *buf;
1778         int bufsz = sizeof(struct iwl_chain_noise_data) * 4 + 100;
1779         ssize_t ret;
1780         struct iwl_chain_noise_data *data;
1781
1782         data = &priv->chain_noise_data;
1783         buf = kzalloc(bufsz, GFP_KERNEL);
1784         if (!buf)
1785                 return -ENOMEM;
1786
1787         pos += scnprintf(buf + pos, bufsz - pos, "active_chains:\t\t\t %u\n",
1788                         data->active_chains);
1789         pos += scnprintf(buf + pos, bufsz - pos, "chain_noise_a:\t\t\t %u\n",
1790                         data->chain_noise_a);
1791         pos += scnprintf(buf + pos, bufsz - pos, "chain_noise_b:\t\t\t %u\n",
1792                         data->chain_noise_b);
1793         pos += scnprintf(buf + pos, bufsz - pos, "chain_noise_c:\t\t\t %u\n",
1794                         data->chain_noise_c);
1795         pos += scnprintf(buf + pos, bufsz - pos, "chain_signal_a:\t\t\t %u\n",
1796                         data->chain_signal_a);
1797         pos += scnprintf(buf + pos, bufsz - pos, "chain_signal_b:\t\t\t %u\n",
1798                         data->chain_signal_b);
1799         pos += scnprintf(buf + pos, bufsz - pos, "chain_signal_c:\t\t\t %u\n",
1800                         data->chain_signal_c);
1801         pos += scnprintf(buf + pos, bufsz - pos, "beacon_count:\t\t\t %u\n",
1802                         data->beacon_count);
1803
1804         pos += scnprintf(buf + pos, bufsz - pos, "disconn_array:\t\t\t");
1805         for (cnt = 0; cnt < NUM_RX_CHAINS; cnt++) {
1806                 pos += scnprintf(buf + pos, bufsz - pos, " %u",
1807                                 data->disconn_array[cnt]);
1808         }
1809         pos += scnprintf(buf + pos, bufsz - pos, "\n");
1810         pos += scnprintf(buf + pos, bufsz - pos, "delta_gain_code:\t\t");
1811         for (cnt = 0; cnt < NUM_RX_CHAINS; cnt++) {
1812                 pos += scnprintf(buf + pos, bufsz - pos, " %u",
1813                                 data->delta_gain_code[cnt]);
1814         }
1815         pos += scnprintf(buf + pos, bufsz - pos, "\n");
1816         pos += scnprintf(buf + pos, bufsz - pos, "radio_write:\t\t\t %u\n",
1817                         data->radio_write);
1818         pos += scnprintf(buf + pos, bufsz - pos, "state:\t\t\t\t %u\n",
1819                         data->state);
1820
1821         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1822         kfree(buf);
1823         return ret;
1824 }
1825
1826 static ssize_t iwl_dbgfs_power_save_status_read(struct file *file,
1827                                                     char __user *user_buf,
1828                                                     size_t count, loff_t *ppos)
1829 {
1830         struct iwl_priv *priv = file->private_data;
1831         char buf[60];
1832         int pos = 0;
1833         const size_t bufsz = sizeof(buf);
1834         u32 pwrsave_status;
1835
1836         pwrsave_status = iwl_read32(priv->trans, CSR_GP_CNTRL) &
1837                         CSR_GP_REG_POWER_SAVE_STATUS_MSK;
1838
1839         pos += scnprintf(buf + pos, bufsz - pos, "Power Save Status: ");
1840         pos += scnprintf(buf + pos, bufsz - pos, "%s\n",
1841                 (pwrsave_status == CSR_GP_REG_NO_POWER_SAVE) ? "none" :
1842                 (pwrsave_status == CSR_GP_REG_MAC_POWER_SAVE) ? "MAC" :
1843                 (pwrsave_status == CSR_GP_REG_PHY_POWER_SAVE) ? "PHY" :
1844                 "error");
1845
1846         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1847 }
1848
1849 static ssize_t iwl_dbgfs_clear_ucode_statistics_write(struct file *file,
1850                                          const char __user *user_buf,
1851                                          size_t count, loff_t *ppos)
1852 {
1853         struct iwl_priv *priv = file->private_data;
1854         char buf[8];
1855         int buf_size;
1856         int clear;
1857
1858         memset(buf, 0, sizeof(buf));
1859         buf_size = min(count, sizeof(buf) -  1);
1860         if (copy_from_user(buf, user_buf, buf_size))
1861                 return -EFAULT;
1862         if (sscanf(buf, "%d", &clear) != 1)
1863                 return -EFAULT;
1864
1865         /* make request to uCode to retrieve statistics information */
1866         mutex_lock(&priv->mutex);
1867         iwl_send_statistics_request(priv, 0, true);
1868         mutex_unlock(&priv->mutex);
1869
1870         return count;
1871 }
1872
1873 static ssize_t iwl_dbgfs_ucode_tracing_read(struct file *file,
1874                                         char __user *user_buf,
1875                                         size_t count, loff_t *ppos) {
1876
1877         struct iwl_priv *priv = file->private_data;
1878         int pos = 0;
1879         char buf[128];
1880         const size_t bufsz = sizeof(buf);
1881
1882         pos += scnprintf(buf + pos, bufsz - pos, "ucode trace timer is %s\n",
1883                         priv->event_log.ucode_trace ? "On" : "Off");
1884         pos += scnprintf(buf + pos, bufsz - pos, "non_wraps_count:\t\t %u\n",
1885                         priv->event_log.non_wraps_count);
1886         pos += scnprintf(buf + pos, bufsz - pos, "wraps_once_count:\t\t %u\n",
1887                         priv->event_log.wraps_once_count);
1888         pos += scnprintf(buf + pos, bufsz - pos, "wraps_more_count:\t\t %u\n",
1889                         priv->event_log.wraps_more_count);
1890
1891         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1892 }
1893
1894 static ssize_t iwl_dbgfs_ucode_tracing_write(struct file *file,
1895                                          const char __user *user_buf,
1896                                          size_t count, loff_t *ppos)
1897 {
1898         struct iwl_priv *priv = file->private_data;
1899         char buf[8];
1900         int buf_size;
1901         int trace;
1902
1903         memset(buf, 0, sizeof(buf));
1904         buf_size = min(count, sizeof(buf) -  1);
1905         if (copy_from_user(buf, user_buf, buf_size))
1906                 return -EFAULT;
1907         if (sscanf(buf, "%d", &trace) != 1)
1908                 return -EFAULT;
1909
1910         if (trace) {
1911                 priv->event_log.ucode_trace = true;
1912                 if (iwl_is_alive(priv)) {
1913                         /* start collecting data now */
1914                         mod_timer(&priv->ucode_trace, jiffies);
1915                 }
1916         } else {
1917                 priv->event_log.ucode_trace = false;
1918                 del_timer_sync(&priv->ucode_trace);
1919         }
1920
1921         return count;
1922 }
1923
1924 static ssize_t iwl_dbgfs_rxon_flags_read(struct file *file,
1925                                          char __user *user_buf,
1926                                          size_t count, loff_t *ppos) {
1927
1928         struct iwl_priv *priv = file->private_data;
1929         int len = 0;
1930         char buf[20];
1931
1932         len = sprintf(buf, "0x%04X\n",
1933                 le32_to_cpu(priv->contexts[IWL_RXON_CTX_BSS].active.flags));
1934         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
1935 }
1936
1937 static ssize_t iwl_dbgfs_rxon_filter_flags_read(struct file *file,
1938                                                 char __user *user_buf,
1939                                                 size_t count, loff_t *ppos) {
1940
1941         struct iwl_priv *priv = file->private_data;
1942         int len = 0;
1943         char buf[20];
1944
1945         len = sprintf(buf, "0x%04X\n",
1946                 le32_to_cpu(priv->contexts[IWL_RXON_CTX_BSS].active.filter_flags));
1947         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
1948 }
1949
1950 static ssize_t iwl_dbgfs_missed_beacon_read(struct file *file,
1951                                         char __user *user_buf,
1952                                         size_t count, loff_t *ppos) {
1953
1954         struct iwl_priv *priv = file->private_data;
1955         int pos = 0;
1956         char buf[12];
1957         const size_t bufsz = sizeof(buf);
1958
1959         pos += scnprintf(buf + pos, bufsz - pos, "%d\n",
1960                         priv->missed_beacon_threshold);
1961
1962         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1963 }
1964
1965 static ssize_t iwl_dbgfs_missed_beacon_write(struct file *file,
1966                                          const char __user *user_buf,
1967                                          size_t count, loff_t *ppos)
1968 {
1969         struct iwl_priv *priv = file->private_data;
1970         char buf[8];
1971         int buf_size;
1972         int missed;
1973
1974         memset(buf, 0, sizeof(buf));
1975         buf_size = min(count, sizeof(buf) -  1);
1976         if (copy_from_user(buf, user_buf, buf_size))
1977                 return -EFAULT;
1978         if (sscanf(buf, "%d", &missed) != 1)
1979                 return -EINVAL;
1980
1981         if (missed < IWL_MISSED_BEACON_THRESHOLD_MIN ||
1982             missed > IWL_MISSED_BEACON_THRESHOLD_MAX)
1983                 priv->missed_beacon_threshold =
1984                         IWL_MISSED_BEACON_THRESHOLD_DEF;
1985         else
1986                 priv->missed_beacon_threshold = missed;
1987
1988         return count;
1989 }
1990
1991 static ssize_t iwl_dbgfs_plcp_delta_read(struct file *file,
1992                                         char __user *user_buf,
1993                                         size_t count, loff_t *ppos) {
1994
1995         struct iwl_priv *priv = file->private_data;
1996         int pos = 0;
1997         char buf[12];
1998         const size_t bufsz = sizeof(buf);
1999
2000         pos += scnprintf(buf + pos, bufsz - pos, "%u\n",
2001                         priv->plcp_delta_threshold);
2002
2003         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
2004 }
2005
2006 static ssize_t iwl_dbgfs_plcp_delta_write(struct file *file,
2007                                         const char __user *user_buf,
2008                                         size_t count, loff_t *ppos) {
2009
2010         struct iwl_priv *priv = file->private_data;
2011         char buf[8];
2012         int buf_size;
2013         int plcp;
2014
2015         memset(buf, 0, sizeof(buf));
2016         buf_size = min(count, sizeof(buf) -  1);
2017         if (copy_from_user(buf, user_buf, buf_size))
2018                 return -EFAULT;
2019         if (sscanf(buf, "%d", &plcp) != 1)
2020                 return -EINVAL;
2021         if ((plcp < IWL_MAX_PLCP_ERR_THRESHOLD_MIN) ||
2022                 (plcp > IWL_MAX_PLCP_ERR_THRESHOLD_MAX))
2023                 priv->plcp_delta_threshold =
2024                         IWL_MAX_PLCP_ERR_THRESHOLD_DISABLE;
2025         else
2026                 priv->plcp_delta_threshold = plcp;
2027         return count;
2028 }
2029
2030 static ssize_t iwl_dbgfs_rf_reset_read(struct file *file,
2031                                        char __user *user_buf,
2032                                        size_t count, loff_t *ppos)
2033 {
2034         struct iwl_priv *priv = file->private_data;
2035         int pos = 0;
2036         char buf[300];
2037         const size_t bufsz = sizeof(buf);
2038         struct iwl_rf_reset *rf_reset = &priv->rf_reset;
2039
2040         pos += scnprintf(buf + pos, bufsz - pos,
2041                         "RF reset statistics\n");
2042         pos += scnprintf(buf + pos, bufsz - pos,
2043                         "\tnumber of reset request: %d\n",
2044                         rf_reset->reset_request_count);
2045         pos += scnprintf(buf + pos, bufsz - pos,
2046                         "\tnumber of reset request success: %d\n",
2047                         rf_reset->reset_success_count);
2048         pos += scnprintf(buf + pos, bufsz - pos,
2049                         "\tnumber of reset request reject: %d\n",
2050                         rf_reset->reset_reject_count);
2051
2052         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
2053 }
2054
2055 static ssize_t iwl_dbgfs_rf_reset_write(struct file *file,
2056                                         const char __user *user_buf,
2057                                         size_t count, loff_t *ppos) {
2058
2059         struct iwl_priv *priv = file->private_data;
2060         int ret;
2061
2062         ret = iwl_force_rf_reset(priv, true);
2063         return ret ? ret : count;
2064 }
2065
2066 static ssize_t iwl_dbgfs_txfifo_flush_write(struct file *file,
2067                                         const char __user *user_buf,
2068                                         size_t count, loff_t *ppos) {
2069
2070         struct iwl_priv *priv = file->private_data;
2071         char buf[8];
2072         int buf_size;
2073         int flush;
2074
2075         memset(buf, 0, sizeof(buf));
2076         buf_size = min(count, sizeof(buf) -  1);
2077         if (copy_from_user(buf, user_buf, buf_size))
2078                 return -EFAULT;
2079         if (sscanf(buf, "%d", &flush) != 1)
2080                 return -EINVAL;
2081
2082         if (iwl_is_rfkill(priv))
2083                 return -EFAULT;
2084
2085         iwlagn_dev_txfifo_flush(priv);
2086
2087         return count;
2088 }
2089
2090 static ssize_t iwl_dbgfs_bt_traffic_read(struct file *file,
2091                                         char __user *user_buf,
2092                                         size_t count, loff_t *ppos) {
2093
2094         struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
2095         int pos = 0;
2096         char buf[200];
2097         const size_t bufsz = sizeof(buf);
2098
2099         if (!priv->bt_enable_flag) {
2100                 pos += scnprintf(buf + pos, bufsz - pos, "BT coex disabled\n");
2101                 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
2102         }
2103         pos += scnprintf(buf + pos, bufsz - pos, "BT enable flag: 0x%x\n",
2104                 priv->bt_enable_flag);
2105         pos += scnprintf(buf + pos, bufsz - pos, "BT in %s mode\n",
2106                 priv->bt_full_concurrent ? "full concurrency" : "3-wire");
2107         pos += scnprintf(buf + pos, bufsz - pos, "BT status: %s, "
2108                          "last traffic notif: %d\n",
2109                 priv->bt_status ? "On" : "Off", priv->last_bt_traffic_load);
2110         pos += scnprintf(buf + pos, bufsz - pos, "ch_announcement: %d, "
2111                          "kill_ack_mask: %x, kill_cts_mask: %x\n",
2112                 priv->bt_ch_announce, priv->kill_ack_mask,
2113                 priv->kill_cts_mask);
2114
2115         pos += scnprintf(buf + pos, bufsz - pos, "bluetooth traffic load: ");
2116         switch (priv->bt_traffic_load) {
2117         case IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS:
2118                 pos += scnprintf(buf + pos, bufsz - pos, "Continuous\n");
2119                 break;
2120         case IWL_BT_COEX_TRAFFIC_LOAD_HIGH:
2121                 pos += scnprintf(buf + pos, bufsz - pos, "High\n");
2122                 break;
2123         case IWL_BT_COEX_TRAFFIC_LOAD_LOW:
2124                 pos += scnprintf(buf + pos, bufsz - pos, "Low\n");
2125                 break;
2126         case IWL_BT_COEX_TRAFFIC_LOAD_NONE:
2127         default:
2128                 pos += scnprintf(buf + pos, bufsz - pos, "None\n");
2129                 break;
2130         }
2131
2132         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
2133 }
2134
2135 static ssize_t iwl_dbgfs_protection_mode_read(struct file *file,
2136                                         char __user *user_buf,
2137                                         size_t count, loff_t *ppos)
2138 {
2139         struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
2140
2141         int pos = 0;
2142         char buf[40];
2143         const size_t bufsz = sizeof(buf);
2144
2145         if (priv->cfg->ht_params)
2146                 pos += scnprintf(buf + pos, bufsz - pos,
2147                          "use %s for aggregation\n",
2148                          (priv->hw_params.use_rts_for_aggregation) ?
2149                                 "rts/cts" : "cts-to-self");
2150         else
2151                 pos += scnprintf(buf + pos, bufsz - pos, "N/A");
2152
2153         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
2154 }
2155
2156 static ssize_t iwl_dbgfs_protection_mode_write(struct file *file,
2157                                         const char __user *user_buf,
2158                                         size_t count, loff_t *ppos) {
2159
2160         struct iwl_priv *priv = file->private_data;
2161         char buf[8];
2162         int buf_size;
2163         int rts;
2164
2165         if (!priv->cfg->ht_params)
2166                 return -EINVAL;
2167
2168         memset(buf, 0, sizeof(buf));
2169         buf_size = min(count, sizeof(buf) -  1);
2170         if (copy_from_user(buf, user_buf, buf_size))
2171                 return -EFAULT;
2172         if (sscanf(buf, "%d", &rts) != 1)
2173                 return -EINVAL;
2174         if (rts)
2175                 priv->hw_params.use_rts_for_aggregation = true;
2176         else
2177                 priv->hw_params.use_rts_for_aggregation = false;
2178         return count;
2179 }
2180
2181 static int iwl_cmd_echo_test(struct iwl_priv *priv)
2182 {
2183         int ret;
2184         struct iwl_host_cmd cmd = {
2185                 .id = REPLY_ECHO,
2186                 .len = { 0 },
2187         };
2188
2189         ret = iwl_dvm_send_cmd(priv, &cmd);
2190         if (ret)
2191                 IWL_ERR(priv, "echo testing fail: 0X%x\n", ret);
2192         else
2193                 IWL_DEBUG_INFO(priv, "echo testing pass\n");
2194         return ret;
2195 }
2196
2197 static ssize_t iwl_dbgfs_echo_test_write(struct file *file,
2198                                         const char __user *user_buf,
2199                                         size_t count, loff_t *ppos)
2200 {
2201         struct iwl_priv *priv = file->private_data;
2202         char buf[8];
2203         int buf_size;
2204
2205         memset(buf, 0, sizeof(buf));
2206         buf_size = min(count, sizeof(buf) -  1);
2207         if (copy_from_user(buf, user_buf, buf_size))
2208                 return -EFAULT;
2209
2210         iwl_cmd_echo_test(priv);
2211         return count;
2212 }
2213
2214 #ifdef CONFIG_IWLWIFI_DEBUG
2215 static ssize_t iwl_dbgfs_log_event_read(struct file *file,
2216                                          char __user *user_buf,
2217                                          size_t count, loff_t *ppos)
2218 {
2219         struct iwl_priv *priv = file->private_data;
2220         char *buf = NULL;
2221         ssize_t ret;
2222
2223         ret = iwl_dump_nic_event_log(priv, true, &buf);
2224         if (ret > 0)
2225                 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
2226         kfree(buf);
2227         return ret;
2228 }
2229
2230 static ssize_t iwl_dbgfs_log_event_write(struct file *file,
2231                                         const char __user *user_buf,
2232                                         size_t count, loff_t *ppos)
2233 {
2234         struct iwl_priv *priv = file->private_data;
2235         u32 event_log_flag;
2236         char buf[8];
2237         int buf_size;
2238
2239         /* check that the interface is up */
2240         if (!iwl_is_ready(priv))
2241                 return -EAGAIN;
2242
2243         memset(buf, 0, sizeof(buf));
2244         buf_size = min(count, sizeof(buf) -  1);
2245         if (copy_from_user(buf, user_buf, buf_size))
2246                 return -EFAULT;
2247         if (sscanf(buf, "%d", &event_log_flag) != 1)
2248                 return -EFAULT;
2249         if (event_log_flag == 1)
2250                 iwl_dump_nic_event_log(priv, true, NULL);
2251
2252         return count;
2253 }
2254 #endif
2255
2256 static ssize_t iwl_dbgfs_calib_disabled_read(struct file *file,
2257                                          char __user *user_buf,
2258                                          size_t count, loff_t *ppos)
2259 {
2260         struct iwl_priv *priv = file->private_data;
2261         char buf[120];
2262         int pos = 0;
2263         const size_t bufsz = sizeof(buf);
2264
2265         pos += scnprintf(buf + pos, bufsz - pos,
2266                          "Sensitivity calibrations %s\n",
2267                          (priv->calib_disabled &
2268                                         IWL_SENSITIVITY_CALIB_DISABLED) ?
2269                          "DISABLED" : "ENABLED");
2270         pos += scnprintf(buf + pos, bufsz - pos,
2271                          "Chain noise calibrations %s\n",
2272                          (priv->calib_disabled &
2273                                         IWL_CHAIN_NOISE_CALIB_DISABLED) ?
2274                          "DISABLED" : "ENABLED");
2275         pos += scnprintf(buf + pos, bufsz - pos,
2276                          "Tx power calibrations %s\n",
2277                          (priv->calib_disabled &
2278                                         IWL_TX_POWER_CALIB_DISABLED) ?
2279                          "DISABLED" : "ENABLED");
2280
2281         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
2282 }
2283
2284 static ssize_t iwl_dbgfs_calib_disabled_write(struct file *file,
2285                                               const char __user *user_buf,
2286                                               size_t count, loff_t *ppos)
2287 {
2288         struct iwl_priv *priv = file->private_data;
2289         char buf[8];
2290         u32 calib_disabled;
2291         int buf_size;
2292
2293         memset(buf, 0, sizeof(buf));
2294         buf_size = min(count, sizeof(buf) - 1);
2295         if (copy_from_user(buf, user_buf, buf_size))
2296                 return -EFAULT;
2297         if (sscanf(buf, "%x", &calib_disabled) != 1)
2298                 return -EFAULT;
2299
2300         priv->calib_disabled = calib_disabled;
2301
2302         return count;
2303 }
2304
2305 static ssize_t iwl_dbgfs_fw_restart_write(struct file *file,
2306                                           const char __user *user_buf,
2307                                           size_t count, loff_t *ppos)
2308 {
2309         struct iwl_priv *priv = file->private_data;
2310         bool restart_fw = iwlwifi_mod_params.restart_fw;
2311         int ret;
2312
2313         iwlwifi_mod_params.restart_fw = true;
2314
2315         mutex_lock(&priv->mutex);
2316
2317         /* take the return value to make compiler happy - it will fail anyway */
2318         ret = iwl_dvm_send_cmd_pdu(priv, REPLY_ERROR, 0, 0, NULL);
2319
2320         mutex_unlock(&priv->mutex);
2321
2322         iwlwifi_mod_params.restart_fw = restart_fw;
2323
2324         return count;
2325 }
2326
2327 DEBUGFS_READ_FILE_OPS(ucode_rx_stats);
2328 DEBUGFS_READ_FILE_OPS(ucode_tx_stats);
2329 DEBUGFS_READ_FILE_OPS(ucode_general_stats);
2330 DEBUGFS_READ_FILE_OPS(sensitivity);
2331 DEBUGFS_READ_FILE_OPS(chain_noise);
2332 DEBUGFS_READ_FILE_OPS(power_save_status);
2333 DEBUGFS_WRITE_FILE_OPS(clear_ucode_statistics);
2334 DEBUGFS_READ_WRITE_FILE_OPS(ucode_tracing);
2335 DEBUGFS_READ_WRITE_FILE_OPS(missed_beacon);
2336 DEBUGFS_READ_WRITE_FILE_OPS(plcp_delta);
2337 DEBUGFS_READ_WRITE_FILE_OPS(rf_reset);
2338 DEBUGFS_READ_FILE_OPS(rxon_flags);
2339 DEBUGFS_READ_FILE_OPS(rxon_filter_flags);
2340 DEBUGFS_WRITE_FILE_OPS(txfifo_flush);
2341 DEBUGFS_READ_FILE_OPS(ucode_bt_stats);
2342 DEBUGFS_READ_FILE_OPS(bt_traffic);
2343 DEBUGFS_READ_WRITE_FILE_OPS(protection_mode);
2344 DEBUGFS_READ_FILE_OPS(reply_tx_error);
2345 DEBUGFS_WRITE_FILE_OPS(echo_test);
2346 DEBUGFS_WRITE_FILE_OPS(fw_restart);
2347 #ifdef CONFIG_IWLWIFI_DEBUG
2348 DEBUGFS_READ_WRITE_FILE_OPS(log_event);
2349 #endif
2350 DEBUGFS_READ_WRITE_FILE_OPS(calib_disabled);
2351
2352 /*
2353  * Create the debugfs files and directories
2354  *
2355  */
2356 int iwl_dbgfs_register(struct iwl_priv *priv, struct dentry *dbgfs_dir)
2357 {
2358         struct dentry *dir_data, *dir_rf, *dir_debug;
2359
2360         priv->debugfs_dir = dbgfs_dir;
2361
2362         dir_data = debugfs_create_dir("data", dbgfs_dir);
2363         if (!dir_data)
2364                 goto err;
2365         dir_rf = debugfs_create_dir("rf", dbgfs_dir);
2366         if (!dir_rf)
2367                 goto err;
2368         dir_debug = debugfs_create_dir("debug", dbgfs_dir);
2369         if (!dir_debug)
2370                 goto err;
2371
2372         DEBUGFS_ADD_FILE(nvm, dir_data, S_IRUSR);
2373         DEBUGFS_ADD_FILE(sram, dir_data, S_IWUSR | S_IRUSR);
2374         DEBUGFS_ADD_FILE(wowlan_sram, dir_data, S_IRUSR);
2375         DEBUGFS_ADD_FILE(stations, dir_data, S_IRUSR);
2376         DEBUGFS_ADD_FILE(channels, dir_data, S_IRUSR);
2377         DEBUGFS_ADD_FILE(status, dir_data, S_IRUSR);
2378         DEBUGFS_ADD_FILE(rx_handlers, dir_data, S_IWUSR | S_IRUSR);
2379         DEBUGFS_ADD_FILE(qos, dir_data, S_IRUSR);
2380         DEBUGFS_ADD_FILE(sleep_level_override, dir_data, S_IWUSR | S_IRUSR);
2381         DEBUGFS_ADD_FILE(current_sleep_command, dir_data, S_IRUSR);
2382         DEBUGFS_ADD_FILE(thermal_throttling, dir_data, S_IRUSR);
2383         DEBUGFS_ADD_FILE(disable_ht40, dir_data, S_IWUSR | S_IRUSR);
2384         DEBUGFS_ADD_FILE(temperature, dir_data, S_IRUSR);
2385
2386         DEBUGFS_ADD_FILE(power_save_status, dir_debug, S_IRUSR);
2387         DEBUGFS_ADD_FILE(clear_ucode_statistics, dir_debug, S_IWUSR);
2388         DEBUGFS_ADD_FILE(missed_beacon, dir_debug, S_IWUSR);
2389         DEBUGFS_ADD_FILE(plcp_delta, dir_debug, S_IWUSR | S_IRUSR);
2390         DEBUGFS_ADD_FILE(rf_reset, dir_debug, S_IWUSR | S_IRUSR);
2391         DEBUGFS_ADD_FILE(ucode_rx_stats, dir_debug, S_IRUSR);
2392         DEBUGFS_ADD_FILE(ucode_tx_stats, dir_debug, S_IRUSR);
2393         DEBUGFS_ADD_FILE(ucode_general_stats, dir_debug, S_IRUSR);
2394         DEBUGFS_ADD_FILE(txfifo_flush, dir_debug, S_IWUSR);
2395         DEBUGFS_ADD_FILE(protection_mode, dir_debug, S_IWUSR | S_IRUSR);
2396         DEBUGFS_ADD_FILE(sensitivity, dir_debug, S_IRUSR);
2397         DEBUGFS_ADD_FILE(chain_noise, dir_debug, S_IRUSR);
2398         DEBUGFS_ADD_FILE(ucode_tracing, dir_debug, S_IWUSR | S_IRUSR);
2399         DEBUGFS_ADD_FILE(ucode_bt_stats, dir_debug, S_IRUSR);
2400         DEBUGFS_ADD_FILE(reply_tx_error, dir_debug, S_IRUSR);
2401         DEBUGFS_ADD_FILE(rxon_flags, dir_debug, S_IWUSR);
2402         DEBUGFS_ADD_FILE(rxon_filter_flags, dir_debug, S_IWUSR);
2403         DEBUGFS_ADD_FILE(echo_test, dir_debug, S_IWUSR);
2404         DEBUGFS_ADD_FILE(fw_restart, dir_debug, S_IWUSR);
2405 #ifdef CONFIG_IWLWIFI_DEBUG
2406         DEBUGFS_ADD_FILE(log_event, dir_debug, S_IWUSR | S_IRUSR);
2407 #endif
2408
2409         if (iwl_advanced_bt_coexist(priv))
2410                 DEBUGFS_ADD_FILE(bt_traffic, dir_debug, S_IRUSR);
2411
2412         /* Calibrations disabled/enabled status*/
2413         DEBUGFS_ADD_FILE(calib_disabled, dir_rf, S_IWUSR | S_IRUSR);
2414
2415         /*
2416          * Create a symlink with mac80211. This is not very robust, as it does
2417          * not remove the symlink created. The implicit assumption is that
2418          * when the opmode exits, mac80211 will also exit, and will remove
2419          * this symlink as part of its cleanup.
2420          */
2421         if (priv->mac80211_registered) {
2422                 char buf[100];
2423                 struct dentry *mac80211_dir, *dev_dir, *root_dir;
2424
2425                 dev_dir = dbgfs_dir->d_parent;
2426                 root_dir = dev_dir->d_parent;
2427                 mac80211_dir = priv->hw->wiphy->debugfsdir;
2428
2429                 snprintf(buf, 100, "../../%s/%s", root_dir->d_name.name,
2430                          dev_dir->d_name.name);
2431
2432                 if (!debugfs_create_symlink("iwlwifi", mac80211_dir, buf))
2433                         goto err;
2434         }
2435
2436         return 0;
2437
2438 err:
2439         IWL_ERR(priv, "failed to create the dvm debugfs entries\n");
2440         return -ENOMEM;
2441 }