drivers/net/wireless/iwlegacy/iwl-debugfs.c

   1 /******************************************************************************
   2  *
   3  * GPL LICENSE SUMMARY
   4  *
   5  * Copyright(c) 2008 - 2011 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 LICENSE.GPL.
  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 #include <linux/ieee80211.h>
  29 #include <net/mac80211.h>
  30
  31
  32 #include "iwl-dev.h"
  33 #include "iwl-debug.h"
  34 #include "common.h"
  35 #include "iwl-io.h"
  36
  37 /* create and remove of files */
  38 #define DEBUGFS_ADD_FILE(name, parent, mode) do {                       \
  39         if (!debugfs_create_file(#name, mode, parent, il,               \
  40                          &il_dbgfs_##name##_ops))               \
  41                 goto err;                                               \
  42 } while (0)
  43
  44 #define DEBUGFS_ADD_BOOL(name, parent, ptr) do {                        \
  45         struct dentry *__tmp;                                           \
  46         __tmp = debugfs_create_bool(#name, S_IWUSR | S_IRUSR,           \
  47                                     parent, ptr);                       \
  48         if (IS_ERR(__tmp) || !__tmp)                                    \
  49                 goto err;                                               \
  50 } while (0)
  51
  52 #define DEBUGFS_ADD_X32(name, parent, ptr) do {                         \
  53         struct dentry *__tmp;                                           \
  54         __tmp = debugfs_create_x32(#name, S_IWUSR | S_IRUSR,            \
  55                                    parent, ptr);                        \
  56         if (IS_ERR(__tmp) || !__tmp)                                    \
  57                 goto err;                                               \
  58 } while (0)
  59
  60 /* file operation */
  61 #define DEBUGFS_READ_FUNC(name)                                         \
  62 static ssize_t il_dbgfs_##name##_read(struct file *file,               \
  63                                         char __user *user_buf,          \
  64                                         size_t count, loff_t *ppos);
  65
  66 #define DEBUGFS_WRITE_FUNC(name)                                        \
  67 static ssize_t il_dbgfs_##name##_write(struct file *file,              \
  68                                         const char __user *user_buf,    \
  69                                         size_t count, loff_t *ppos);
  70
  71
  72 static int
  73 il_dbgfs_open_file_generic(struct inode *inode, struct file *file)
  74 {
  75         file->private_data = inode->i_private;
  76         return 0;
  77 }
  78
  79 #define DEBUGFS_READ_FILE_OPS(name)                             \
  80         DEBUGFS_READ_FUNC(name);                                        \
  81 static const struct file_operations il_dbgfs_##name##_ops = {   \
  82         .read = il_dbgfs_##name##_read,                         \
  83         .open = il_dbgfs_open_file_generic,                     \
  84         .llseek = generic_file_llseek,                                  \
  85 };
  86
  87 #define DEBUGFS_WRITE_FILE_OPS(name)                            \
  88         DEBUGFS_WRITE_FUNC(name);                                       \
  89 static const struct file_operations il_dbgfs_##name##_ops = {   \
  90         .write = il_dbgfs_##name##_write,                       \
  91         .open = il_dbgfs_open_file_generic,                     \
  92         .llseek = generic_file_llseek,                                  \
  93 };
  94
  95 #define DEBUGFS_READ_WRITE_FILE_OPS(name)                           \
  96         DEBUGFS_READ_FUNC(name);                                        \
  97         DEBUGFS_WRITE_FUNC(name);                                       \
  98 static const struct file_operations il_dbgfs_##name##_ops = {   \
  99         .write = il_dbgfs_##name##_write,                       \
 100         .read = il_dbgfs_##name##_read,                         \
 101         .open = il_dbgfs_open_file_generic,                     \
 102         .llseek = generic_file_llseek,                                  \
 103 };
 104
 105 static ssize_t il_dbgfs_tx_stats_read(struct file *file,
 106                                                 char __user *user_buf,
 107                                                 size_t count, loff_t *ppos) {
 108
 109         struct il_priv *il = file->private_data;
 110         char *buf;
 111         int pos = 0;
 112
 113         int cnt;
 114         ssize_t ret;
 115         const size_t bufsz = 100 +
 116                 sizeof(char) * 50 * (MANAGEMENT_MAX + CONTROL_MAX);
 117         buf = kzalloc(bufsz, GFP_KERNEL);
 118         if (!buf)
 119                 return -ENOMEM;
 120         pos += scnprintf(buf + pos, bufsz - pos, "Management:\n");
 121         for (cnt = 0; cnt < MANAGEMENT_MAX; cnt++) {
 122                 pos += scnprintf(buf + pos, bufsz - pos,
 123                                  "\t%25s\t\t: %u\n",
 124                                  il_get_mgmt_string(cnt),
 125                                  il->tx_stats.mgmt[cnt]);
 126         }
 127         pos += scnprintf(buf + pos, bufsz - pos, "Control\n");
 128         for (cnt = 0; cnt < CONTROL_MAX; cnt++) {
 129                 pos += scnprintf(buf + pos, bufsz - pos,
 130                                  "\t%25s\t\t: %u\n",
 131                                  il_get_ctrl_string(cnt),
 132                                  il->tx_stats.ctrl[cnt]);
 133         }
 134         pos += scnprintf(buf + pos, bufsz - pos, "Data:\n");
 135         pos += scnprintf(buf + pos, bufsz - pos, "\tcnt: %u\n",
 136                          il->tx_stats.data_cnt);
 137         pos += scnprintf(buf + pos, bufsz - pos, "\tbytes: %llu\n",
 138                          il->tx_stats.data_bytes);
 139         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 140         kfree(buf);
 141         return ret;
 142 }
 143
 144 static ssize_t
 145 il_dbgfs_clear_traffic_stats_write(struct file *file,
 146                                         const char __user *user_buf,
 147                                         size_t count, loff_t *ppos)
 148 {
 149         struct il_priv *il = file->private_data;
 150         u32 clear_flag;
 151         char buf[8];
 152         int buf_size;
 153
 154         memset(buf, 0, sizeof(buf));
 155         buf_size = min(count, sizeof(buf) -  1);
 156         if (copy_from_user(buf, user_buf, buf_size))
 157                 return -EFAULT;
 158         if (sscanf(buf, "%x", &clear_flag) != 1)
 159                 return -EFAULT;
 160         il_clear_traffic_stats(il);
 161
 162         return count;
 163 }
 164
 165 static ssize_t il_dbgfs_rx_stats_read(struct file *file,
 166                                                 char __user *user_buf,
 167                                                 size_t count, loff_t *ppos) {
 168
 169         struct il_priv *il = file->private_data;
 170         char *buf;
 171         int pos = 0;
 172         int cnt;
 173         ssize_t ret;
 174         const size_t bufsz = 100 +
 175                 sizeof(char) * 50 * (MANAGEMENT_MAX + CONTROL_MAX);
 176         buf = kzalloc(bufsz, GFP_KERNEL);
 177         if (!buf)
 178                 return -ENOMEM;
 179
 180         pos += scnprintf(buf + pos, bufsz - pos, "Management:\n");
 181         for (cnt = 0; cnt < MANAGEMENT_MAX; cnt++) {
 182                 pos += scnprintf(buf + pos, bufsz - pos,
 183                                  "\t%25s\t\t: %u\n",
 184                                  il_get_mgmt_string(cnt),
 185                                  il->rx_stats.mgmt[cnt]);
 186         }
 187         pos += scnprintf(buf + pos, bufsz - pos, "Control:\n");
 188         for (cnt = 0; cnt < CONTROL_MAX; cnt++) {
 189                 pos += scnprintf(buf + pos, bufsz - pos,
 190                                  "\t%25s\t\t: %u\n",
 191                                  il_get_ctrl_string(cnt),
 192                                  il->rx_stats.ctrl[cnt]);
 193         }
 194         pos += scnprintf(buf + pos, bufsz - pos, "Data:\n");
 195         pos += scnprintf(buf + pos, bufsz - pos, "\tcnt: %u\n",
 196                          il->rx_stats.data_cnt);
 197         pos += scnprintf(buf + pos, bufsz - pos, "\tbytes: %llu\n",
 198                          il->rx_stats.data_bytes);
 199
 200         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 201         kfree(buf);
 202         return ret;
 203 }
 204
 205 #define BYTE1_MASK 0x000000ff;
 206 #define BYTE2_MASK 0x0000ffff;
 207 #define BYTE3_MASK 0x00ffffff;
 208 static ssize_t il_dbgfs_sram_read(struct file *file,
 209                                         char __user *user_buf,
 210                                         size_t count, loff_t *ppos)
 211 {
 212         u32 val;
 213         char *buf;
 214         ssize_t ret;
 215         int i;
 216         int pos = 0;
 217         struct il_priv *il = file->private_data;
 218         size_t bufsz;
 219
 220         /* default is to dump the entire data segment */
 221         if (!il->dbgfs_sram_offset && !il->dbgfs_sram_len) {
 222                 il->dbgfs_sram_offset = 0x800000;
 223                 if (il->ucode_type == UCODE_INIT)
 224                         il->dbgfs_sram_len = il->ucode_init_data.len;
 225                 else
 226                         il->dbgfs_sram_len = il->ucode_data.len;
 227         }
 228         bufsz =  30 + il->dbgfs_sram_len * sizeof(char) * 10;
 229         buf = kmalloc(bufsz, GFP_KERNEL);
 230         if (!buf)
 231                 return -ENOMEM;
 232         pos += scnprintf(buf + pos, bufsz - pos, "sram_len: 0x%x\n",
 233                         il->dbgfs_sram_len);
 234         pos += scnprintf(buf + pos, bufsz - pos, "sram_offset: 0x%x\n",
 235                         il->dbgfs_sram_offset);
 236         for (i = il->dbgfs_sram_len; i > 0; i -= 4) {
 237                 val = il_read_targ_mem(il, il->dbgfs_sram_offset + \
 238                                         il->dbgfs_sram_len - i);
 239                 if (i < 4) {
 240                         switch (i) {
 241                         case 1:
 242                                 val &= BYTE1_MASK;
 243                                 break;
 244                         case 2:
 245                                 val &= BYTE2_MASK;
 246                                 break;
 247                         case 3:
 248                                 val &= BYTE3_MASK;
 249                                 break;
 250                         }
 251                 }
 252                 if (!(i % 16))
 253                         pos += scnprintf(buf + pos, bufsz - pos, "\n");
 254                 pos += scnprintf(buf + pos, bufsz - pos, "0x%08x ", val);
 255         }
 256         pos += scnprintf(buf + pos, bufsz - pos, "\n");
 257
 258         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 259         kfree(buf);
 260         return ret;
 261 }
 262
 263 static ssize_t il_dbgfs_sram_write(struct file *file,
 264                                         const char __user *user_buf,
 265                                         size_t count, loff_t *ppos)
 266 {
 267         struct il_priv *il = file->private_data;
 268         char buf[64];
 269         int buf_size;
 270         u32 offset, len;
 271
 272         memset(buf, 0, sizeof(buf));
 273         buf_size = min(count, sizeof(buf) -  1);
 274         if (copy_from_user(buf, user_buf, buf_size))
 275                 return -EFAULT;
 276
 277         if (sscanf(buf, "%x,%x", &offset, &len) == 2) {
 278                 il->dbgfs_sram_offset = offset;
 279                 il->dbgfs_sram_len = len;
 280         } else {
 281                 il->dbgfs_sram_offset = 0;
 282                 il->dbgfs_sram_len = 0;
 283         }
 284
 285         return count;
 286 }
 287
 288 static ssize_t
 289 il_dbgfs_stations_read(struct file *file, char __user *user_buf,
 290                                         size_t count, loff_t *ppos)
 291 {
 292         struct il_priv *il = file->private_data;
 293         struct il_station_entry *station;
 294         int max_sta = il->hw_params.max_stations;
 295         char *buf;
 296         int i, j, pos = 0;
 297         ssize_t ret;
 298         /* Add 30 for initial string */
 299         const size_t bufsz = 30 + sizeof(char) * 500 * (il->num_stations);
 300
 301         buf = kmalloc(bufsz, GFP_KERNEL);
 302         if (!buf)
 303                 return -ENOMEM;
 304
 305         pos += scnprintf(buf + pos, bufsz - pos, "num of stations: %d\n\n",
 306                         il->num_stations);
 307
 308         for (i = 0; i < max_sta; i++) {
 309                 station = &il->stations[i];
 310                 if (!station->used)
 311                         continue;
 312                 pos += scnprintf(buf + pos, bufsz - pos,
 313                                  "station %d - addr: %pM, flags: %#x\n",
 314                                  i, station->sta.sta.addr,
 315                                  station->sta.station_flags_msk);
 316                 pos += scnprintf(buf + pos, bufsz - pos,
 317                                 "TID\tseq_num\ttxq_id\tframes\ttfds\t");
 318                 pos += scnprintf(buf + pos, bufsz - pos,
 319                                 "start_idx\tbitmap\t\t\trate_n_flags\n");
 320
 321                 for (j = 0; j < MAX_TID_COUNT; j++) {
 322                         pos += scnprintf(buf + pos, bufsz - pos,
 323                                 "%d:\t%#x\t%#x\t%u\t%u\t%u\t\t%#.16llx\t%#x",
 324                                 j, station->tid[j].seq_number,
 325                                 station->tid[j].agg.txq_id,
 326                                 station->tid[j].agg.frame_count,
 327                                 station->tid[j].tfds_in_queue,
 328                                 station->tid[j].agg.start_idx,
 329                                 station->tid[j].agg.bitmap,
 330                                 station->tid[j].agg.rate_n_flags);
 331
 332                         if (station->tid[j].agg.wait_for_ba)
 333                                 pos += scnprintf(buf + pos, bufsz - pos,
 334                                                  " - waitforba");
 335                         pos += scnprintf(buf + pos, bufsz - pos, "\n");
 336                 }
 337
 338                 pos += scnprintf(buf + pos, bufsz - pos, "\n");
 339         }
 340
 341         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 342         kfree(buf);
 343         return ret;
 344 }
 345
 346 static ssize_t il_dbgfs_nvm_read(struct file *file,
 347                                        char __user *user_buf,
 348                                        size_t count,
 349                                        loff_t *ppos)
 350 {
 351         ssize_t ret;
 352         struct il_priv *il = file->private_data;
 353         int pos = 0, ofs = 0, buf_size = 0;
 354         const u8 *ptr;
 355         char *buf;
 356         u16 eeprom_ver;
 357         size_t eeprom_len = il->cfg->base_params->eeprom_size;
 358         buf_size = 4 * eeprom_len + 256;
 359
 360         if (eeprom_len % 16) {
 361                 IL_ERR("NVM size is not multiple of 16.\n");
 362                 return -ENODATA;
 363         }
 364
 365         ptr = il->eeprom;
 366         if (!ptr) {
 367                 IL_ERR("Invalid EEPROM memory\n");
 368                 return -ENOMEM;
 369         }
 370
 371         /* 4 characters for byte 0xYY */
 372         buf = kzalloc(buf_size, GFP_KERNEL);
 373         if (!buf) {
 374                 IL_ERR("Can not allocate Buffer\n");
 375                 return -ENOMEM;
 376         }
 377         eeprom_ver = il_eeprom_query16(il, EEPROM_VERSION);
 378         pos += scnprintf(buf + pos, buf_size - pos, "EEPROM "
 379                         "version: 0x%x\n", eeprom_ver);
 380         for (ofs = 0 ; ofs < eeprom_len ; ofs += 16) {
 381                 pos += scnprintf(buf + pos, buf_size - pos, "0x%.4x ", ofs);
 382                 hex_dump_to_buffer(ptr + ofs, 16 , 16, 2, buf + pos,
 383                                    buf_size - pos, 0);
 384                 pos += strlen(buf + pos);
 385                 if (buf_size - pos > 0)
 386                         buf[pos++] = '\n';
 387         }
 388
 389         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 390         kfree(buf);
 391         return ret;
 392 }
 393
 394 static ssize_t
 395 il_dbgfs_channels_read(struct file *file, char __user *user_buf,
 396                                        size_t count, loff_t *ppos)
 397 {
 398         struct il_priv *il = file->private_data;
 399         struct ieee80211_channel *channels = NULL;
 400         const struct ieee80211_supported_band *supp_band = NULL;
 401         int pos = 0, i, bufsz = PAGE_SIZE;
 402         char *buf;
 403         ssize_t ret;
 404
 405         if (!test_bit(S_GEO_CONFIGURED, &il->status))
 406                 return -EAGAIN;
 407
 408         buf = kzalloc(bufsz, GFP_KERNEL);
 409         if (!buf) {
 410                 IL_ERR("Can not allocate Buffer\n");
 411                 return -ENOMEM;
 412         }
 413
 414         supp_band = il_get_hw_mode(il, IEEE80211_BAND_2GHZ);
 415         if (supp_band) {
 416                 channels = supp_band->channels;
 417
 418                 pos += scnprintf(buf + pos, bufsz - pos,
 419                                 "Displaying %d channels in 2.4GHz band 802.11bg):\n",
 420                                 supp_band->n_channels);
 421
 422                 for (i = 0; i < supp_band->n_channels; i++)
 423                         pos += scnprintf(buf + pos, bufsz - pos,
 424                                 "%d: %ddBm: BSS%s%s, %s.\n",
 425                                 channels[i].hw_value,
 426                                 channels[i].max_power,
 427                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
 428                                 " (IEEE 802.11h required)" : "",
 429                                 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
 430                                 || (channels[i].flags &
 431                                 IEEE80211_CHAN_RADAR)) ? "" :
 432                                 ", IBSS",
 433                                 channels[i].flags &
 434                                 IEEE80211_CHAN_PASSIVE_SCAN ?
 435                                 "passive only" : "active/passive");
 436         }
 437         supp_band = il_get_hw_mode(il, IEEE80211_BAND_5GHZ);
 438         if (supp_band) {
 439                 channels = supp_band->channels;
 440
 441                 pos += scnprintf(buf + pos, bufsz - pos,
 442                                 "Displaying %d channels in 5.2GHz band (802.11a)\n",
 443                                 supp_band->n_channels);
 444
 445                 for (i = 0; i < supp_band->n_channels; i++)
 446                         pos += scnprintf(buf + pos, bufsz - pos,
 447                                 "%d: %ddBm: BSS%s%s, %s.\n",
 448                                 channels[i].hw_value,
 449                                 channels[i].max_power,
 450                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
 451                                 " (IEEE 802.11h required)" : "",
 452                                 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
 453                                 || (channels[i].flags &
 454                                 IEEE80211_CHAN_RADAR)) ? "" :
 455                                 ", IBSS",
 456                                 channels[i].flags &
 457                                 IEEE80211_CHAN_PASSIVE_SCAN ?
 458                                 "passive only" : "active/passive");
 459         }
 460         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 461         kfree(buf);
 462         return ret;
 463 }
 464
 465 static ssize_t il_dbgfs_status_read(struct file *file,
 466                                                 char __user *user_buf,
 467                                                 size_t count, loff_t *ppos) {
 468
 469         struct il_priv *il = file->private_data;
 470         char buf[512];
 471         int pos = 0;
 472         const size_t bufsz = sizeof(buf);
 473
 474         pos += scnprintf(buf + pos, bufsz - pos, "S_HCMD_ACTIVE:\t %d\n",
 475                 test_bit(S_HCMD_ACTIVE, &il->status));
 476         pos += scnprintf(buf + pos, bufsz - pos, "S_INT_ENABLED:\t %d\n",
 477                 test_bit(S_INT_ENABLED, &il->status));
 478         pos += scnprintf(buf + pos, bufsz - pos, "S_RF_KILL_HW:\t %d\n",
 479                 test_bit(S_RF_KILL_HW, &il->status));
 480         pos += scnprintf(buf + pos, bufsz - pos, "S_CT_KILL:\t\t %d\n",
 481                 test_bit(S_CT_KILL, &il->status));
 482         pos += scnprintf(buf + pos, bufsz - pos, "S_INIT:\t\t %d\n",
 483                 test_bit(S_INIT, &il->status));
 484         pos += scnprintf(buf + pos, bufsz - pos, "S_ALIVE:\t\t %d\n",
 485                 test_bit(S_ALIVE, &il->status));
 486         pos += scnprintf(buf + pos, bufsz - pos, "S_READY:\t\t %d\n",
 487                 test_bit(S_READY, &il->status));
 488         pos += scnprintf(buf + pos, bufsz - pos, "S_TEMPERATURE:\t %d\n",
 489                 test_bit(S_TEMPERATURE, &il->status));
 490         pos += scnprintf(buf + pos, bufsz - pos, "S_GEO_CONFIGURED:\t %d\n",
 491                 test_bit(S_GEO_CONFIGURED, &il->status));
 492         pos += scnprintf(buf + pos, bufsz - pos, "S_EXIT_PENDING:\t %d\n",
 493                 test_bit(S_EXIT_PENDING, &il->status));
 494         pos += scnprintf(buf + pos, bufsz - pos, "S_STATS:\t %d\n",
 495                 test_bit(S_STATS, &il->status));
 496         pos += scnprintf(buf + pos, bufsz - pos, "S_SCANNING:\t %d\n",
 497                 test_bit(S_SCANNING, &il->status));
 498         pos += scnprintf(buf + pos, bufsz - pos, "S_SCAN_ABORTING:\t %d\n",
 499                 test_bit(S_SCAN_ABORTING, &il->status));
 500         pos += scnprintf(buf + pos, bufsz - pos, "S_SCAN_HW:\t\t %d\n",
 501                 test_bit(S_SCAN_HW, &il->status));
 502         pos += scnprintf(buf + pos, bufsz - pos, "S_POWER_PMI:\t %d\n",
 503                 test_bit(S_POWER_PMI, &il->status));
 504         pos += scnprintf(buf + pos, bufsz - pos, "S_FW_ERROR:\t %d\n",
 505                 test_bit(S_FW_ERROR, &il->status));
 506         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 507 }
 508
 509 static ssize_t il_dbgfs_interrupt_read(struct file *file,
 510                                         char __user *user_buf,
 511                                         size_t count, loff_t *ppos) {
 512
 513         struct il_priv *il = file->private_data;
 514         int pos = 0;
 515         int cnt = 0;
 516         char *buf;
 517         int bufsz = 24 * 64; /* 24 items * 64 char per item */
 518         ssize_t ret;
 519
 520         buf = kzalloc(bufsz, GFP_KERNEL);
 521         if (!buf) {
 522                 IL_ERR("Can not allocate Buffer\n");
 523                 return -ENOMEM;
 524         }
 525
 526         pos += scnprintf(buf + pos, bufsz - pos,
 527                         "Interrupt Statistics Report:\n");
 528
 529         pos += scnprintf(buf + pos, bufsz - pos, "HW Error:\t\t\t %u\n",
 530                 il->isr_stats.hw);
 531         pos += scnprintf(buf + pos, bufsz - pos, "SW Error:\t\t\t %u\n",
 532                 il->isr_stats.sw);
 533         if (il->isr_stats.sw || il->isr_stats.hw) {
 534                 pos += scnprintf(buf + pos, bufsz - pos,
 535                         "\tLast Restarting Code:  0x%X\n",
 536                         il->isr_stats.err_code);
 537         }
 538 #ifdef CONFIG_IWLEGACY_DEBUG
 539         pos += scnprintf(buf + pos, bufsz - pos, "Frame transmitted:\t\t %u\n",
 540                 il->isr_stats.sch);
 541         pos += scnprintf(buf + pos, bufsz - pos, "Alive interrupt:\t\t %u\n",
 542                 il->isr_stats.alive);
 543 #endif
 544         pos += scnprintf(buf + pos, bufsz - pos,
 545                 "HW RF KILL switch toggled:\t %u\n",
 546                 il->isr_stats.rfkill);
 547
 548         pos += scnprintf(buf + pos, bufsz - pos, "CT KILL:\t\t\t %u\n",
 549                 il->isr_stats.ctkill);
 550
 551         pos += scnprintf(buf + pos, bufsz - pos, "Wakeup Interrupt:\t\t %u\n",
 552                 il->isr_stats.wakeup);
 553
 554         pos += scnprintf(buf + pos, bufsz - pos,
 555                 "Rx command responses:\t\t %u\n",
 556                 il->isr_stats.rx);
 557         for (cnt = 0; cnt < IL_CN_MAX; cnt++) {
 558                 if (il->isr_stats.handlers[cnt] > 0)
 559                         pos += scnprintf(buf + pos, bufsz - pos,
 560                                 "\tRx handler[%36s]:\t\t %u\n",
 561                                 il_get_cmd_string(cnt),
 562                                 il->isr_stats.handlers[cnt]);
 563         }
 564
 565         pos += scnprintf(buf + pos, bufsz - pos, "Tx/FH interrupt:\t\t %u\n",
 566                 il->isr_stats.tx);
 567
 568         pos += scnprintf(buf + pos, bufsz - pos, "Unexpected INTA:\t\t %u\n",
 569                 il->isr_stats.unhandled);
 570
 571         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 572         kfree(buf);
 573         return ret;
 574 }
 575
 576 static ssize_t il_dbgfs_interrupt_write(struct file *file,
 577                                          const char __user *user_buf,
 578                                          size_t count, loff_t *ppos)
 579 {
 580         struct il_priv *il = file->private_data;
 581         char buf[8];
 582         int buf_size;
 583         u32 reset_flag;
 584
 585         memset(buf, 0, sizeof(buf));
 586         buf_size = min(count, sizeof(buf) -  1);
 587         if (copy_from_user(buf, user_buf, buf_size))
 588                 return -EFAULT;
 589         if (sscanf(buf, "%x", &reset_flag) != 1)
 590                 return -EFAULT;
 591         if (reset_flag == 0)
 592                 il_clear_isr_stats(il);
 593
 594         return count;
 595 }
 596
 597 static ssize_t
 598 il_dbgfs_qos_read(struct file *file, char __user *user_buf,
 599                                        size_t count, loff_t *ppos)
 600 {
 601         struct il_priv *il = file->private_data;
 602         struct il_rxon_context *ctx = &il->ctx;
 603         int pos = 0, i;
 604         char buf[256];
 605         const size_t bufsz = sizeof(buf);
 606
 607         pos += scnprintf(buf + pos, bufsz - pos, "context %d:\n",
 608                          ctx->ctxid);
 609         for (i = 0; i < AC_NUM; i++) {
 610                 pos += scnprintf(buf + pos, bufsz - pos,
 611                         "\tcw_min\tcw_max\taifsn\ttxop\n");
 612                 pos += scnprintf(buf + pos, bufsz - pos,
 613                         "AC[%d]\t%u\t%u\t%u\t%u\n", i,
 614                         ctx->qos_data.def_qos_parm.ac[i].cw_min,
 615                         ctx->qos_data.def_qos_parm.ac[i].cw_max,
 616                         ctx->qos_data.def_qos_parm.ac[i].aifsn,
 617                         ctx->qos_data.def_qos_parm.ac[i].edca_txop);
 618         }
 619
 620         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 621 }
 622
 623 static ssize_t il_dbgfs_disable_ht40_write(struct file *file,
 624                                          const char __user *user_buf,
 625                                          size_t count, loff_t *ppos)
 626 {
 627         struct il_priv *il = file->private_data;
 628         char buf[8];
 629         int buf_size;
 630         int ht40;
 631
 632         memset(buf, 0, sizeof(buf));
 633         buf_size = min(count, sizeof(buf) -  1);
 634         if (copy_from_user(buf, user_buf, buf_size))
 635                 return -EFAULT;
 636         if (sscanf(buf, "%d", &ht40) != 1)
 637                 return -EFAULT;
 638         if (!il_is_any_associated(il))
 639                 il->disable_ht40 = ht40 ? true : false;
 640         else {
 641                 IL_ERR("Sta associated with AP - "
 642                         "Change to 40MHz channel support is not allowed\n");
 643                 return -EINVAL;
 644         }
 645
 646         return count;
 647 }
 648
 649 static ssize_t il_dbgfs_disable_ht40_read(struct file *file,
 650                                          char __user *user_buf,
 651                                          size_t count, loff_t *ppos)
 652 {
 653         struct il_priv *il = file->private_data;
 654         char buf[100];
 655         int pos = 0;
 656         const size_t bufsz = sizeof(buf);
 657
 658         pos += scnprintf(buf + pos, bufsz - pos,
 659                         "11n 40MHz Mode: %s\n",
 660                         il->disable_ht40 ? "Disabled" : "Enabled");
 661         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 662 }
 663
 664 DEBUGFS_READ_WRITE_FILE_OPS(sram);
 665 DEBUGFS_READ_FILE_OPS(nvm);
 666 DEBUGFS_READ_FILE_OPS(stations);
 667 DEBUGFS_READ_FILE_OPS(channels);
 668 DEBUGFS_READ_FILE_OPS(status);
 669 DEBUGFS_READ_WRITE_FILE_OPS(interrupt);
 670 DEBUGFS_READ_FILE_OPS(qos);
 671 DEBUGFS_READ_WRITE_FILE_OPS(disable_ht40);
 672
 673 static ssize_t il_dbgfs_traffic_log_read(struct file *file,
 674                                          char __user *user_buf,
 675                                          size_t count, loff_t *ppos)
 676 {
 677         struct il_priv *il = file->private_data;
 678         int pos = 0, ofs = 0;
 679         int cnt = 0, entry;
 680         struct il_tx_queue *txq;
 681         struct il_queue *q;
 682         struct il_rx_queue *rxq = &il->rxq;
 683         char *buf;
 684         int bufsz = ((IL_TRAFFIC_ENTRIES * IL_TRAFFIC_ENTRY_SIZE * 64) * 2) +
 685                 (il->cfg->base_params->num_of_queues * 32 * 8) + 400;
 686         const u8 *ptr;
 687         ssize_t ret;
 688
 689         if (!il->txq) {
 690                 IL_ERR("txq not ready\n");
 691                 return -EAGAIN;
 692         }
 693         buf = kzalloc(bufsz, GFP_KERNEL);
 694         if (!buf) {
 695                 IL_ERR("Can not allocate buffer\n");
 696                 return -ENOMEM;
 697         }
 698         pos += scnprintf(buf + pos, bufsz - pos, "Tx Queue\n");
 699         for (cnt = 0; cnt < il->hw_params.max_txq_num; cnt++) {
 700                 txq = &il->txq[cnt];
 701                 q = &txq->q;
 702                 pos += scnprintf(buf + pos, bufsz - pos,
 703                                 "q[%d]: read_ptr: %u, write_ptr: %u\n",
 704                                 cnt, q->read_ptr, q->write_ptr);
 705         }
 706         if (il->tx_traffic && (il_debug_level & IL_DL_TX)) {
 707                 ptr = il->tx_traffic;
 708                 pos += scnprintf(buf + pos, bufsz - pos,
 709                                 "Tx Traffic idx: %u\n", il->tx_traffic_idx);
 710                 for (cnt = 0, ofs = 0; cnt < IL_TRAFFIC_ENTRIES; cnt++) {
 711                         for (entry = 0; entry < IL_TRAFFIC_ENTRY_SIZE / 16;
 712                              entry++,  ofs += 16) {
 713                                 pos += scnprintf(buf + pos, bufsz - pos,
 714                                                 "0x%.4x ", ofs);
 715                                 hex_dump_to_buffer(ptr + ofs, 16, 16, 2,
 716                                                    buf + pos, bufsz - pos, 0);
 717                                 pos += strlen(buf + pos);
 718                                 if (bufsz - pos > 0)
 719                                         buf[pos++] = '\n';
 720                         }
 721                 }
 722         }
 723
 724         pos += scnprintf(buf + pos, bufsz - pos, "Rx Queue\n");
 725         pos += scnprintf(buf + pos, bufsz - pos,
 726                         "read: %u, write: %u\n",
 727                          rxq->read, rxq->write);
 728
 729         if (il->rx_traffic && (il_debug_level & IL_DL_RX)) {
 730                 ptr = il->rx_traffic;
 731                 pos += scnprintf(buf + pos, bufsz - pos,
 732                                 "Rx Traffic idx: %u\n", il->rx_traffic_idx);
 733                 for (cnt = 0, ofs = 0; cnt < IL_TRAFFIC_ENTRIES; cnt++) {
 734                         for (entry = 0; entry < IL_TRAFFIC_ENTRY_SIZE / 16;
 735                              entry++,  ofs += 16) {
 736                                 pos += scnprintf(buf + pos, bufsz - pos,
 737                                                 "0x%.4x ", ofs);
 738                                 hex_dump_to_buffer(ptr + ofs, 16, 16, 2,
 739                                                    buf + pos, bufsz - pos, 0);
 740                                 pos += strlen(buf + pos);
 741                                 if (bufsz - pos > 0)
 742                                         buf[pos++] = '\n';
 743                         }
 744                 }
 745         }
 746
 747         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 748         kfree(buf);
 749         return ret;
 750 }
 751
 752 static ssize_t il_dbgfs_traffic_log_write(struct file *file,
 753                                          const char __user *user_buf,
 754                                          size_t count, loff_t *ppos)
 755 {
 756         struct il_priv *il = file->private_data;
 757         char buf[8];
 758         int buf_size;
 759         int traffic_log;
 760
 761         memset(buf, 0, sizeof(buf));
 762         buf_size = min(count, sizeof(buf) -  1);
 763         if (copy_from_user(buf, user_buf, buf_size))
 764                 return -EFAULT;
 765         if (sscanf(buf, "%d", &traffic_log) != 1)
 766                 return -EFAULT;
 767         if (traffic_log == 0)
 768                 il_reset_traffic_log(il);
 769
 770         return count;
 771 }
 772
 773 static ssize_t il_dbgfs_tx_queue_read(struct file *file,
 774                                                 char __user *user_buf,
 775                                                 size_t count, loff_t *ppos) {
 776
 777         struct il_priv *il = file->private_data;
 778         struct il_tx_queue *txq;
 779         struct il_queue *q;
 780         char *buf;
 781         int pos = 0;
 782         int cnt;
 783         int ret;
 784         const size_t bufsz = sizeof(char) * 64 *
 785                                 il->cfg->base_params->num_of_queues;
 786
 787         if (!il->txq) {
 788                 IL_ERR("txq not ready\n");
 789                 return -EAGAIN;
 790         }
 791         buf = kzalloc(bufsz, GFP_KERNEL);
 792         if (!buf)
 793                 return -ENOMEM;
 794
 795         for (cnt = 0; cnt < il->hw_params.max_txq_num; cnt++) {
 796                 txq = &il->txq[cnt];
 797                 q = &txq->q;
 798                 pos += scnprintf(buf + pos, bufsz - pos,
 799                                 "hwq %.2d: read=%u write=%u stop=%d"
 800                                 " swq_id=%#.2x (ac %d/hwq %d)\n",
 801                                 cnt, q->read_ptr, q->write_ptr,
 802                                 !!test_bit(cnt, il->queue_stopped),
 803                                 txq->swq_id, txq->swq_id & 3,
 804                                 (txq->swq_id >> 2) & 0x1f);
 805                 if (cnt >= 4)
 806                         continue;
 807                 /* for the ACs, display the stop count too */
 808                 pos += scnprintf(buf + pos, bufsz - pos,
 809                                 "        stop-count: %d\n",
 810                                 atomic_read(&il->queue_stop_count[cnt]));
 811         }
 812         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 813         kfree(buf);
 814         return ret;
 815 }
 816
 817 static ssize_t il_dbgfs_rx_queue_read(struct file *file,
 818                                                 char __user *user_buf,
 819                                                 size_t count, loff_t *ppos) {
 820
 821         struct il_priv *il = file->private_data;
 822         struct il_rx_queue *rxq = &il->rxq;
 823         char buf[256];
 824         int pos = 0;
 825         const size_t bufsz = sizeof(buf);
 826
 827         pos += scnprintf(buf + pos, bufsz - pos, "read: %u\n",
 828                                                 rxq->read);
 829         pos += scnprintf(buf + pos, bufsz - pos, "write: %u\n",
 830                                                 rxq->write);
 831         pos += scnprintf(buf + pos, bufsz - pos, "free_count: %u\n",
 832                                                 rxq->free_count);
 833         if (rxq->rb_stts) {
 834                 pos += scnprintf(buf + pos, bufsz - pos, "closed_rb_num: %u\n",
 835                          le16_to_cpu(rxq->rb_stts->closed_rb_num) &  0x0FFF);
 836         } else {
 837                 pos += scnprintf(buf + pos, bufsz - pos,
 838                                         "closed_rb_num: Not Allocated\n");
 839         }
 840         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 841 }
 842
 843 static ssize_t il_dbgfs_ucode_rx_stats_read(struct file *file,
 844                                         char __user *user_buf,
 845                                         size_t count, loff_t *ppos)
 846 {
 847         struct il_priv *il = file->private_data;
 848         return il->cfg->ops->lib->debugfs_ops.rx_stats_read(file,
 849                         user_buf, count, ppos);
 850 }
 851
 852 static ssize_t il_dbgfs_ucode_tx_stats_read(struct file *file,
 853                                         char __user *user_buf,
 854                                         size_t count, loff_t *ppos)
 855 {
 856         struct il_priv *il = file->private_data;
 857         return il->cfg->ops->lib->debugfs_ops.tx_stats_read(file,
 858                         user_buf, count, ppos);
 859 }
 860
 861 static ssize_t il_dbgfs_ucode_general_stats_read(struct file *file,
 862                                         char __user *user_buf,
 863                                         size_t count, loff_t *ppos)
 864 {
 865         struct il_priv *il = file->private_data;
 866         return il->cfg->ops->lib->debugfs_ops.general_stats_read(file,
 867                         user_buf, count, ppos);
 868 }
 869
 870 static ssize_t il_dbgfs_sensitivity_read(struct file *file,
 871                                         char __user *user_buf,
 872                                         size_t count, loff_t *ppos) {
 873
 874         struct il_priv *il = file->private_data;
 875         int pos = 0;
 876         int cnt = 0;
 877         char *buf;
 878         int bufsz = sizeof(struct il_sensitivity_data) * 4 + 100;
 879         ssize_t ret;
 880         struct il_sensitivity_data *data;
 881
 882         data = &il->sensitivity_data;
 883         buf = kzalloc(bufsz, GFP_KERNEL);
 884         if (!buf) {
 885                 IL_ERR("Can not allocate Buffer\n");
 886                 return -ENOMEM;
 887         }
 888
 889         pos += scnprintf(buf + pos, bufsz - pos, "auto_corr_ofdm:\t\t\t %u\n",
 890                         data->auto_corr_ofdm);
 891         pos += scnprintf(buf + pos, bufsz - pos,
 892                         "auto_corr_ofdm_mrc:\t\t %u\n",
 893                         data->auto_corr_ofdm_mrc);
 894         pos += scnprintf(buf + pos, bufsz - pos, "auto_corr_ofdm_x1:\t\t %u\n",
 895                         data->auto_corr_ofdm_x1);
 896         pos += scnprintf(buf + pos, bufsz - pos,
 897                         "auto_corr_ofdm_mrc_x1:\t\t %u\n",
 898                         data->auto_corr_ofdm_mrc_x1);
 899         pos += scnprintf(buf + pos, bufsz - pos, "auto_corr_cck:\t\t\t %u\n",
 900                         data->auto_corr_cck);
 901         pos += scnprintf(buf + pos, bufsz - pos, "auto_corr_cck_mrc:\t\t %u\n",
 902                         data->auto_corr_cck_mrc);
 903         pos += scnprintf(buf + pos, bufsz - pos,
 904                         "last_bad_plcp_cnt_ofdm:\t\t %u\n",
 905                         data->last_bad_plcp_cnt_ofdm);
 906         pos += scnprintf(buf + pos, bufsz - pos, "last_fa_cnt_ofdm:\t\t %u\n",
 907                         data->last_fa_cnt_ofdm);
 908         pos += scnprintf(buf + pos, bufsz - pos,
 909                         "last_bad_plcp_cnt_cck:\t\t %u\n",
 910                         data->last_bad_plcp_cnt_cck);
 911         pos += scnprintf(buf + pos, bufsz - pos, "last_fa_cnt_cck:\t\t %u\n",
 912                         data->last_fa_cnt_cck);
 913         pos += scnprintf(buf + pos, bufsz - pos, "nrg_curr_state:\t\t\t %u\n",
 914                         data->nrg_curr_state);
 915         pos += scnprintf(buf + pos, bufsz - pos, "nrg_prev_state:\t\t\t %u\n",
 916                         data->nrg_prev_state);
 917         pos += scnprintf(buf + pos, bufsz - pos, "nrg_value:\t\t\t");
 918         for (cnt = 0; cnt < 10; cnt++) {
 919                 pos += scnprintf(buf + pos, bufsz - pos, " %u",
 920                                 data->nrg_value[cnt]);
 921         }
 922         pos += scnprintf(buf + pos, bufsz - pos, "\n");
 923         pos += scnprintf(buf + pos, bufsz - pos, "nrg_silence_rssi:\t\t");
 924         for (cnt = 0; cnt < NRG_NUM_PREV_STAT_L; cnt++) {
 925                 pos += scnprintf(buf + pos, bufsz - pos, " %u",
 926                                 data->nrg_silence_rssi[cnt]);
 927         }
 928         pos += scnprintf(buf + pos, bufsz - pos, "\n");
 929         pos += scnprintf(buf + pos, bufsz - pos, "nrg_silence_ref:\t\t %u\n",
 930                         data->nrg_silence_ref);
 931         pos += scnprintf(buf + pos, bufsz - pos, "nrg_energy_idx:\t\t\t %u\n",
 932                         data->nrg_energy_idx);
 933         pos += scnprintf(buf + pos, bufsz - pos, "nrg_silence_idx:\t\t %u\n",
 934                         data->nrg_silence_idx);
 935         pos += scnprintf(buf + pos, bufsz - pos, "nrg_th_cck:\t\t\t %u\n",
 936                         data->nrg_th_cck);
 937         pos += scnprintf(buf + pos, bufsz - pos,
 938                         "nrg_auto_corr_silence_diff:\t %u\n",
 939                         data->nrg_auto_corr_silence_diff);
 940         pos += scnprintf(buf + pos, bufsz - pos, "num_in_cck_no_fa:\t\t %u\n",
 941                         data->num_in_cck_no_fa);
 942         pos += scnprintf(buf + pos, bufsz - pos, "nrg_th_ofdm:\t\t\t %u\n",
 943                         data->nrg_th_ofdm);
 944
 945         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 946         kfree(buf);
 947         return ret;
 948 }
 949
 950
 951 static ssize_t il_dbgfs_chain_noise_read(struct file *file,
 952                                         char __user *user_buf,
 953                                         size_t count, loff_t *ppos) {
 954
 955         struct il_priv *il = file->private_data;
 956         int pos = 0;
 957         int cnt = 0;
 958         char *buf;
 959         int bufsz = sizeof(struct il_chain_noise_data) * 4 + 100;
 960         ssize_t ret;
 961         struct il_chain_noise_data *data;
 962
 963         data = &il->chain_noise_data;
 964         buf = kzalloc(bufsz, GFP_KERNEL);
 965         if (!buf) {
 966                 IL_ERR("Can not allocate Buffer\n");
 967                 return -ENOMEM;
 968         }
 969
 970         pos += scnprintf(buf + pos, bufsz - pos, "active_chains:\t\t\t %u\n",
 971                         data->active_chains);
 972         pos += scnprintf(buf + pos, bufsz - pos, "chain_noise_a:\t\t\t %u\n",
 973                         data->chain_noise_a);
 974         pos += scnprintf(buf + pos, bufsz - pos, "chain_noise_b:\t\t\t %u\n",
 975                         data->chain_noise_b);
 976         pos += scnprintf(buf + pos, bufsz - pos, "chain_noise_c:\t\t\t %u\n",
 977                         data->chain_noise_c);
 978         pos += scnprintf(buf + pos, bufsz - pos, "chain_signal_a:\t\t\t %u\n",
 979                         data->chain_signal_a);
 980         pos += scnprintf(buf + pos, bufsz - pos, "chain_signal_b:\t\t\t %u\n",
 981                         data->chain_signal_b);
 982         pos += scnprintf(buf + pos, bufsz - pos, "chain_signal_c:\t\t\t %u\n",
 983                         data->chain_signal_c);
 984         pos += scnprintf(buf + pos, bufsz - pos, "beacon_count:\t\t\t %u\n",
 985                         data->beacon_count);
 986
 987         pos += scnprintf(buf + pos, bufsz - pos, "disconn_array:\t\t\t");
 988         for (cnt = 0; cnt < NUM_RX_CHAINS; cnt++) {
 989                 pos += scnprintf(buf + pos, bufsz - pos, " %u",
 990                                 data->disconn_array[cnt]);
 991         }
 992         pos += scnprintf(buf + pos, bufsz - pos, "\n");
 993         pos += scnprintf(buf + pos, bufsz - pos, "delta_gain_code:\t\t");
 994         for (cnt = 0; cnt < NUM_RX_CHAINS; cnt++) {
 995                 pos += scnprintf(buf + pos, bufsz - pos, " %u",
 996                                 data->delta_gain_code[cnt]);
 997         }
 998         pos += scnprintf(buf + pos, bufsz - pos, "\n");
 999         pos += scnprintf(buf + pos, bufsz - pos, "radio_write:\t\t\t %u\n",
1000                         data->radio_write);
1001         pos += scnprintf(buf + pos, bufsz - pos, "state:\t\t\t\t %u\n",
1002                         data->state);
1003
1004         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1005         kfree(buf);
1006         return ret;
1007 }
1008
1009 static ssize_t il_dbgfs_power_save_status_read(struct file *file,
1010                                                     char __user *user_buf,
1011                                                     size_t count, loff_t *ppos)
1012 {
1013         struct il_priv *il = file->private_data;
1014         char buf[60];
1015         int pos = 0;
1016         const size_t bufsz = sizeof(buf);
1017         u32 pwrsave_status;
1018
1019         pwrsave_status = _il_rd(il, CSR_GP_CNTRL) &
1020                         CSR_GP_REG_POWER_SAVE_STATUS_MSK;
1021
1022         pos += scnprintf(buf + pos, bufsz - pos, "Power Save Status: ");
1023         pos += scnprintf(buf + pos, bufsz - pos, "%s\n",
1024                 (pwrsave_status == CSR_GP_REG_NO_POWER_SAVE) ? "none" :
1025                 (pwrsave_status == CSR_GP_REG_MAC_POWER_SAVE) ? "MAC" :
1026                 (pwrsave_status == CSR_GP_REG_PHY_POWER_SAVE) ? "PHY" :
1027                 "error");
1028
1029         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1030 }
1031
1032 static ssize_t il_dbgfs_clear_ucode_stats_write(struct file *file,
1033                                          const char __user *user_buf,
1034                                          size_t count, loff_t *ppos)
1035 {
1036         struct il_priv *il = file->private_data;
1037         char buf[8];
1038         int buf_size;
1039         int clear;
1040
1041         memset(buf, 0, sizeof(buf));
1042         buf_size = min(count, sizeof(buf) -  1);
1043         if (copy_from_user(buf, user_buf, buf_size))
1044                 return -EFAULT;
1045         if (sscanf(buf, "%d", &clear) != 1)
1046                 return -EFAULT;
1047
1048         /* make request to uCode to retrieve stats information */
1049         mutex_lock(&il->mutex);
1050         il_send_stats_request(il, CMD_SYNC, true);
1051         mutex_unlock(&il->mutex);
1052
1053         return count;
1054 }
1055
1056 static ssize_t il_dbgfs_rxon_flags_read(struct file *file,
1057                                          char __user *user_buf,
1058                                          size_t count, loff_t *ppos) {
1059
1060         struct il_priv *il = file->private_data;
1061         int len = 0;
1062         char buf[20];
1063
1064         len = sprintf(buf, "0x%04X\n",
1065                 le32_to_cpu(il->ctx.active.flags));
1066         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
1067 }
1068
1069 static ssize_t il_dbgfs_rxon_filter_flags_read(struct file *file,
1070                                                 char __user *user_buf,
1071                                                 size_t count, loff_t *ppos) {
1072
1073         struct il_priv *il = file->private_data;
1074         int len = 0;
1075         char buf[20];
1076
1077         len = sprintf(buf, "0x%04X\n",
1078         le32_to_cpu(il->ctx.active.filter_flags));
1079         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
1080 }
1081
1082 static ssize_t il_dbgfs_fh_reg_read(struct file *file,
1083                                          char __user *user_buf,
1084                                          size_t count, loff_t *ppos)
1085 {
1086         struct il_priv *il = file->private_data;
1087         char *buf;
1088         int pos = 0;
1089         ssize_t ret = -EFAULT;
1090
1091         if (il->cfg->ops->lib->dump_fh) {
1092                 ret = pos = il->cfg->ops->lib->dump_fh(il, &buf, true);
1093                 if (buf) {
1094                         ret = simple_read_from_buffer(user_buf,
1095                                                       count, ppos, buf, pos);
1096                         kfree(buf);
1097                 }
1098         }
1099
1100         return ret;
1101 }
1102
1103 static ssize_t il_dbgfs_missed_beacon_read(struct file *file,
1104                                         char __user *user_buf,
1105                                         size_t count, loff_t *ppos) {
1106
1107         struct il_priv *il = file->private_data;
1108         int pos = 0;
1109         char buf[12];
1110         const size_t bufsz = sizeof(buf);
1111
1112         pos += scnprintf(buf + pos, bufsz - pos, "%d\n",
1113                         il->missed_beacon_threshold);
1114
1115         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1116 }
1117
1118 static ssize_t il_dbgfs_missed_beacon_write(struct file *file,
1119                                          const char __user *user_buf,
1120                                          size_t count, loff_t *ppos)
1121 {
1122         struct il_priv *il = file->private_data;
1123         char buf[8];
1124         int buf_size;
1125         int missed;
1126
1127         memset(buf, 0, sizeof(buf));
1128         buf_size = min(count, sizeof(buf) -  1);
1129         if (copy_from_user(buf, user_buf, buf_size))
1130                 return -EFAULT;
1131         if (sscanf(buf, "%d", &missed) != 1)
1132                 return -EINVAL;
1133
1134         if (missed < IL_MISSED_BEACON_THRESHOLD_MIN ||
1135             missed > IL_MISSED_BEACON_THRESHOLD_MAX)
1136                 il->missed_beacon_threshold =
1137                         IL_MISSED_BEACON_THRESHOLD_DEF;
1138         else
1139                 il->missed_beacon_threshold = missed;
1140
1141         return count;
1142 }
1143
1144 static ssize_t il_dbgfs_force_reset_read(struct file *file,
1145                                         char __user *user_buf,
1146                                         size_t count, loff_t *ppos) {
1147
1148         struct il_priv *il = file->private_data;
1149         int pos = 0;
1150         char buf[300];
1151         const size_t bufsz = sizeof(buf);
1152         struct il_force_reset *force_reset;
1153
1154         force_reset = &il->force_reset;
1155
1156         pos += scnprintf(buf + pos, bufsz - pos,
1157                         "\tnumber of reset request: %d\n",
1158                         force_reset->reset_request_count);
1159         pos += scnprintf(buf + pos, bufsz - pos,
1160                         "\tnumber of reset request success: %d\n",
1161                         force_reset->reset_success_count);
1162         pos += scnprintf(buf + pos, bufsz - pos,
1163                         "\tnumber of reset request reject: %d\n",
1164                         force_reset->reset_reject_count);
1165         pos += scnprintf(buf + pos, bufsz - pos,
1166                         "\treset duration: %lu\n",
1167                         force_reset->reset_duration);
1168
1169         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1170 }
1171
1172 static ssize_t il_dbgfs_force_reset_write(struct file *file,
1173                                         const char __user *user_buf,
1174                                         size_t count, loff_t *ppos) {
1175
1176         int ret;
1177         struct il_priv *il = file->private_data;
1178
1179         ret = il_force_reset(il, true);
1180
1181         return ret ? ret : count;
1182 }
1183
1184 static ssize_t il_dbgfs_wd_timeout_write(struct file *file,
1185                                         const char __user *user_buf,
1186                                         size_t count, loff_t *ppos) {
1187
1188         struct il_priv *il = file->private_data;
1189         char buf[8];
1190         int buf_size;
1191         int timeout;
1192
1193         memset(buf, 0, sizeof(buf));
1194         buf_size = min(count, sizeof(buf) -  1);
1195         if (copy_from_user(buf, user_buf, buf_size))
1196                 return -EFAULT;
1197         if (sscanf(buf, "%d", &timeout) != 1)
1198                 return -EINVAL;
1199         if (timeout < 0 || timeout > IL_MAX_WD_TIMEOUT)
1200                 timeout = IL_DEF_WD_TIMEOUT;
1201
1202         il->cfg->base_params->wd_timeout = timeout;
1203         il_setup_watchdog(il);
1204         return count;
1205 }
1206
1207 DEBUGFS_READ_FILE_OPS(rx_stats);
1208 DEBUGFS_READ_FILE_OPS(tx_stats);
1209 DEBUGFS_READ_WRITE_FILE_OPS(traffic_log);
1210 DEBUGFS_READ_FILE_OPS(rx_queue);
1211 DEBUGFS_READ_FILE_OPS(tx_queue);
1212 DEBUGFS_READ_FILE_OPS(ucode_rx_stats);
1213 DEBUGFS_READ_FILE_OPS(ucode_tx_stats);
1214 DEBUGFS_READ_FILE_OPS(ucode_general_stats);
1215 DEBUGFS_READ_FILE_OPS(sensitivity);
1216 DEBUGFS_READ_FILE_OPS(chain_noise);
1217 DEBUGFS_READ_FILE_OPS(power_save_status);
1218 DEBUGFS_WRITE_FILE_OPS(clear_ucode_stats);
1219 DEBUGFS_WRITE_FILE_OPS(clear_traffic_stats);
1220 DEBUGFS_READ_FILE_OPS(fh_reg);
1221 DEBUGFS_READ_WRITE_FILE_OPS(missed_beacon);
1222 DEBUGFS_READ_WRITE_FILE_OPS(force_reset);
1223 DEBUGFS_READ_FILE_OPS(rxon_flags);
1224 DEBUGFS_READ_FILE_OPS(rxon_filter_flags);
1225 DEBUGFS_WRITE_FILE_OPS(wd_timeout);
1226
1227 /*
1228  * Create the debugfs files and directories
1229  *
1230  */
1231 int il_dbgfs_register(struct il_priv *il, const char *name)
1232 {
1233         struct dentry *phyd = il->hw->wiphy->debugfsdir;
1234         struct dentry *dir_drv, *dir_data, *dir_rf, *dir_debug;
1235
1236         dir_drv = debugfs_create_dir(name, phyd);
1237         if (!dir_drv)
1238                 return -ENOMEM;
1239
1240         il->debugfs_dir = dir_drv;
1241
1242         dir_data = debugfs_create_dir("data", dir_drv);
1243         if (!dir_data)
1244                 goto err;
1245         dir_rf = debugfs_create_dir("rf", dir_drv);
1246         if (!dir_rf)
1247                 goto err;
1248         dir_debug = debugfs_create_dir("debug", dir_drv);
1249         if (!dir_debug)
1250                 goto err;
1251
1252         DEBUGFS_ADD_FILE(nvm, dir_data, S_IRUSR);
1253         DEBUGFS_ADD_FILE(sram, dir_data, S_IWUSR | S_IRUSR);
1254         DEBUGFS_ADD_FILE(stations, dir_data, S_IRUSR);
1255         DEBUGFS_ADD_FILE(channels, dir_data, S_IRUSR);
1256         DEBUGFS_ADD_FILE(status, dir_data, S_IRUSR);
1257         DEBUGFS_ADD_FILE(interrupt, dir_data, S_IWUSR | S_IRUSR);
1258         DEBUGFS_ADD_FILE(qos, dir_data, S_IRUSR);
1259         DEBUGFS_ADD_FILE(disable_ht40, dir_data, S_IWUSR | S_IRUSR);
1260         DEBUGFS_ADD_FILE(rx_stats, dir_debug, S_IRUSR);
1261         DEBUGFS_ADD_FILE(tx_stats, dir_debug, S_IRUSR);
1262         DEBUGFS_ADD_FILE(traffic_log, dir_debug, S_IWUSR | S_IRUSR);
1263         DEBUGFS_ADD_FILE(rx_queue, dir_debug, S_IRUSR);
1264         DEBUGFS_ADD_FILE(tx_queue, dir_debug, S_IRUSR);
1265         DEBUGFS_ADD_FILE(power_save_status, dir_debug, S_IRUSR);
1266         DEBUGFS_ADD_FILE(clear_ucode_stats, dir_debug, S_IWUSR);
1267         DEBUGFS_ADD_FILE(clear_traffic_stats, dir_debug, S_IWUSR);
1268         DEBUGFS_ADD_FILE(fh_reg, dir_debug, S_IRUSR);
1269         DEBUGFS_ADD_FILE(missed_beacon, dir_debug, S_IWUSR);
1270         DEBUGFS_ADD_FILE(force_reset, dir_debug, S_IWUSR | S_IRUSR);
1271         DEBUGFS_ADD_FILE(ucode_rx_stats, dir_debug, S_IRUSR);
1272         DEBUGFS_ADD_FILE(ucode_tx_stats, dir_debug, S_IRUSR);
1273         DEBUGFS_ADD_FILE(ucode_general_stats, dir_debug, S_IRUSR);
1274
1275         if (il->cfg->base_params->sensitivity_calib_by_driver)
1276                 DEBUGFS_ADD_FILE(sensitivity, dir_debug, S_IRUSR);
1277         if (il->cfg->base_params->chain_noise_calib_by_driver)
1278                 DEBUGFS_ADD_FILE(chain_noise, dir_debug, S_IRUSR);
1279         DEBUGFS_ADD_FILE(rxon_flags, dir_debug, S_IWUSR);
1280         DEBUGFS_ADD_FILE(rxon_filter_flags, dir_debug, S_IWUSR);
1281         DEBUGFS_ADD_FILE(wd_timeout, dir_debug, S_IWUSR);
1282         if (il->cfg->base_params->sensitivity_calib_by_driver)
1283                 DEBUGFS_ADD_BOOL(disable_sensitivity, dir_rf,
1284                                  &il->disable_sens_cal);
1285         if (il->cfg->base_params->chain_noise_calib_by_driver)
1286                 DEBUGFS_ADD_BOOL(disable_chain_noise, dir_rf,
1287                                  &il->disable_chain_noise_cal);
1288         DEBUGFS_ADD_BOOL(disable_tx_power, dir_rf,
1289                                 &il->disable_tx_power_cal);
1290         return 0;
1291
1292 err:
1293         IL_ERR("Can't create the debugfs directory\n");
1294         il_dbgfs_unregister(il);
1295         return -ENOMEM;
1296 }
1297 EXPORT_SYMBOL(il_dbgfs_register);
1298
1299 /**
1300  * Remove the debugfs files and directories
1301  *
1302  */
1303 void il_dbgfs_unregister(struct il_priv *il)
1304 {
1305         if (!il->debugfs_dir)
1306                 return;
1307
1308         debugfs_remove_recursive(il->debugfs_dir);
1309         il->debugfs_dir = NULL;
1310 }
1311 EXPORT_SYMBOL(il_dbgfs_unregister);