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

   1 /******************************************************************************
   2  *
   3  * This file is provided under a dual BSD/GPLv2 license.  When using or
   4  * redistributing this file, you may do so under either license.
   5  *
   6  * GPL LICENSE SUMMARY
   7  *
   8  * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of version 2 of the GNU General Public License as
  12  * published by the Free Software Foundation.
  13  *
  14  * This program is distributed in the hope that it will be useful, but
  15  * WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  22  * USA
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  25  * in the file called COPYING.
  26  *
  27  * Contact Information:
  28  *  Intel Linux Wireless <ilw@linux.intel.com>
  29  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  30  *
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  32  *
  33  * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
  34  * All rights reserved.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
  38  * are met:
  39  *
  40  *  * Redistributions of source code must retain the above copyright
  41  *    notice, this list of conditions and the following disclaimer.
  42  *  * Redistributions in binary form must reproduce the above copyright
  43  *    notice, this list of conditions and the following disclaimer in
  44  *    the documentation and/or other materials provided with the
  45  *    distribution.
  46  *  * Neither the name Intel Corporation nor the names of its
  47  *    contributors may be used to endorse or promote products derived
  48  *    from this software without specific prior written permission.
  49  *
  50  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  51  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  52  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  53  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  54  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  55  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  56  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  57  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  58  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  59  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  60  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  61  *
  62  *****************************************************************************/
  63 #include "mvm.h"
  64 #include "sta.h"
  65 #include "iwl-io.h"
  66
  67 struct iwl_dbgfs_mvm_ctx {
  68         struct iwl_mvm *mvm;
  69         struct ieee80211_vif *vif;
  70 };
  71
  72 static ssize_t iwl_dbgfs_tx_flush_write(struct file *file,
  73                                         const char __user *user_buf,
  74                                         size_t count, loff_t *ppos)
  75 {
  76         struct iwl_mvm *mvm = file->private_data;
  77
  78         char buf[16];
  79         int buf_size, ret;
  80         u32 scd_q_msk;
  81
  82         if (!mvm->ucode_loaded || mvm->cur_ucode != IWL_UCODE_REGULAR)
  83                 return -EIO;
  84
  85         memset(buf, 0, sizeof(buf));
  86         buf_size = min(count, sizeof(buf) - 1);
  87         if (copy_from_user(buf, user_buf, buf_size))
  88                 return -EFAULT;
  89
  90         if (sscanf(buf, "%x", &scd_q_msk) != 1)
  91                 return -EINVAL;
  92
  93         IWL_ERR(mvm, "FLUSHING queues: scd_q_msk = 0x%x\n", scd_q_msk);
  94
  95         mutex_lock(&mvm->mutex);
  96         ret =  iwl_mvm_flush_tx_path(mvm, scd_q_msk, true) ? : count;
  97         mutex_unlock(&mvm->mutex);
  98
  99         return ret;
 100 }
 101
 102 static ssize_t iwl_dbgfs_sta_drain_write(struct file *file,
 103                                          const char __user *user_buf,
 104                                          size_t count, loff_t *ppos)
 105 {
 106         struct iwl_mvm *mvm = file->private_data;
 107         struct ieee80211_sta *sta;
 108
 109         char buf[8];
 110         int buf_size, sta_id, drain, ret;
 111
 112         if (!mvm->ucode_loaded || mvm->cur_ucode != IWL_UCODE_REGULAR)
 113                 return -EIO;
 114
 115         memset(buf, 0, sizeof(buf));
 116         buf_size = min(count, sizeof(buf) - 1);
 117         if (copy_from_user(buf, user_buf, buf_size))
 118                 return -EFAULT;
 119
 120         if (sscanf(buf, "%d %d", &sta_id, &drain) != 2)
 121                 return -EINVAL;
 122
 123         mutex_lock(&mvm->mutex);
 124
 125         sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
 126                                         lockdep_is_held(&mvm->mutex));
 127         if (IS_ERR_OR_NULL(sta))
 128                 ret = -ENOENT;
 129         else
 130                 ret = iwl_mvm_drain_sta(mvm, (void *)sta->drv_priv, drain) ? :
 131                         count;
 132
 133         mutex_unlock(&mvm->mutex);
 134
 135         return ret;
 136 }
 137
 138 static ssize_t iwl_dbgfs_sram_read(struct file *file, char __user *user_buf,
 139                                    size_t count, loff_t *ppos)
 140 {
 141         struct iwl_mvm *mvm = file->private_data;
 142         const struct fw_img *img;
 143         int ofs, len, pos = 0;
 144         size_t bufsz, ret;
 145         char *buf;
 146         u8 *ptr;
 147
 148         if (!mvm->ucode_loaded)
 149                 return -EINVAL;
 150
 151         /* default is to dump the entire data segment */
 152         if (!mvm->dbgfs_sram_offset && !mvm->dbgfs_sram_len) {
 153                 img = &mvm->fw->img[mvm->cur_ucode];
 154                 ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
 155                 len = img->sec[IWL_UCODE_SECTION_DATA].len;
 156         } else {
 157                 ofs = mvm->dbgfs_sram_offset;
 158                 len = mvm->dbgfs_sram_len;
 159         }
 160
 161         bufsz = len * 4 + 256;
 162         buf = kzalloc(bufsz, GFP_KERNEL);
 163         if (!buf)
 164                 return -ENOMEM;
 165
 166         ptr = kzalloc(len, GFP_KERNEL);
 167         if (!ptr) {
 168                 kfree(buf);
 169                 return -ENOMEM;
 170         }
 171
 172         pos += scnprintf(buf + pos, bufsz - pos, "sram_len: 0x%x\n", len);
 173         pos += scnprintf(buf + pos, bufsz - pos, "sram_offset: 0x%x\n", ofs);
 174
 175         iwl_trans_read_mem_bytes(mvm->trans, ofs, ptr, len);
 176         for (ofs = 0; ofs < len; ofs += 16) {
 177                 pos += scnprintf(buf + pos, bufsz - pos, "0x%.4x ", ofs);
 178                 hex_dump_to_buffer(ptr + ofs, 16, 16, 1, buf + pos,
 179                                    bufsz - pos, false);
 180                 pos += strlen(buf + pos);
 181                 if (bufsz - pos > 0)
 182                         buf[pos++] = '\n';
 183         }
 184
 185         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 186
 187         kfree(buf);
 188         kfree(ptr);
 189
 190         return ret;
 191 }
 192
 193 static ssize_t iwl_dbgfs_sram_write(struct file *file,
 194                                     const char __user *user_buf, size_t count,
 195                                     loff_t *ppos)
 196 {
 197         struct iwl_mvm *mvm = file->private_data;
 198         char buf[64];
 199         int buf_size;
 200         u32 offset, len;
 201
 202         memset(buf, 0, sizeof(buf));
 203         buf_size = min(count, sizeof(buf) -  1);
 204         if (copy_from_user(buf, user_buf, buf_size))
 205                 return -EFAULT;
 206
 207         if (sscanf(buf, "%x,%x", &offset, &len) == 2) {
 208                 if ((offset & 0x3) || (len & 0x3))
 209                         return -EINVAL;
 210                 mvm->dbgfs_sram_offset = offset;
 211                 mvm->dbgfs_sram_len = len;
 212         } else {
 213                 mvm->dbgfs_sram_offset = 0;
 214                 mvm->dbgfs_sram_len = 0;
 215         }
 216
 217         return count;
 218 }
 219
 220 static ssize_t iwl_dbgfs_stations_read(struct file *file, char __user *user_buf,
 221                                        size_t count, loff_t *ppos)
 222 {
 223         struct iwl_mvm *mvm = file->private_data;
 224         struct ieee80211_sta *sta;
 225         char buf[400];
 226         int i, pos = 0, bufsz = sizeof(buf);
 227
 228         mutex_lock(&mvm->mutex);
 229
 230         for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
 231                 pos += scnprintf(buf + pos, bufsz - pos, "%.2d: ", i);
 232                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
 233                                                 lockdep_is_held(&mvm->mutex));
 234                 if (!sta)
 235                         pos += scnprintf(buf + pos, bufsz - pos, "N/A\n");
 236                 else if (IS_ERR(sta))
 237                         pos += scnprintf(buf + pos, bufsz - pos, "%ld\n",
 238                                          PTR_ERR(sta));
 239                 else
 240                         pos += scnprintf(buf + pos, bufsz - pos, "%pM\n",
 241                                          sta->addr);
 242         }
 243
 244         mutex_unlock(&mvm->mutex);
 245
 246         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 247 }
 248
 249 static ssize_t iwl_dbgfs_disable_power_off_read(struct file *file,
 250                                                 char __user *user_buf,
 251                                                 size_t count, loff_t *ppos)
 252 {
 253         struct iwl_mvm *mvm = file->private_data;
 254         char buf[64];
 255         int bufsz = sizeof(buf);
 256         int pos = 0;
 257
 258         pos += scnprintf(buf+pos, bufsz-pos, "disable_power_off_d0=%d\n",
 259                          mvm->disable_power_off);
 260         pos += scnprintf(buf+pos, bufsz-pos, "disable_power_off_d3=%d\n",
 261                          mvm->disable_power_off_d3);
 262
 263         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 264 }
 265
 266 static ssize_t iwl_dbgfs_disable_power_off_write(struct file *file,
 267                                                  const char __user *user_buf,
 268                                                  size_t count, loff_t *ppos)
 269 {
 270         struct iwl_mvm *mvm = file->private_data;
 271         char buf[64] = {};
 272         int ret;
 273         int val;
 274
 275         if (!mvm->ucode_loaded)
 276                 return -EIO;
 277
 278         count = min_t(size_t, count, sizeof(buf) - 1);
 279         if (copy_from_user(buf, user_buf, count))
 280                 return -EFAULT;
 281
 282         if (!strncmp("disable_power_off_d0=", buf, 21)) {
 283                 if (sscanf(buf + 21, "%d", &val) != 1)
 284                         return -EINVAL;
 285                 mvm->disable_power_off = val;
 286         } else if (!strncmp("disable_power_off_d3=", buf, 21)) {
 287                 if (sscanf(buf + 21, "%d", &val) != 1)
 288                         return -EINVAL;
 289                 mvm->disable_power_off_d3 = val;
 290         } else {
 291                 return -EINVAL;
 292         }
 293
 294         mutex_lock(&mvm->mutex);
 295         ret = iwl_mvm_power_update_device_mode(mvm);
 296         mutex_unlock(&mvm->mutex);
 297
 298         return ret ?: count;
 299 }
 300
 301 static void iwl_dbgfs_update_pm(struct iwl_mvm *mvm,
 302                                  struct ieee80211_vif *vif,
 303                                  enum iwl_dbgfs_pm_mask param, int val)
 304 {
 305         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 306         struct iwl_dbgfs_pm *dbgfs_pm = &mvmvif->dbgfs_pm;
 307
 308         dbgfs_pm->mask |= param;
 309
 310         switch (param) {
 311         case MVM_DEBUGFS_PM_KEEP_ALIVE: {
 312                 struct ieee80211_hw *hw = mvm->hw;
 313                 int dtimper = hw->conf.ps_dtim_period ?: 1;
 314                 int dtimper_msec = dtimper * vif->bss_conf.beacon_int;
 315
 316                 IWL_DEBUG_POWER(mvm, "debugfs: set keep_alive= %d sec\n", val);
 317                 if (val * MSEC_PER_SEC < 3 * dtimper_msec) {
 318                         IWL_WARN(mvm,
 319                                  "debugfs: keep alive period (%ld msec) is less than minimum required (%d msec)\n",
 320                                  val * MSEC_PER_SEC, 3 * dtimper_msec);
 321                 }
 322                 dbgfs_pm->keep_alive_seconds = val;
 323                 break;
 324         }
 325         case MVM_DEBUGFS_PM_SKIP_OVER_DTIM:
 326                 IWL_DEBUG_POWER(mvm, "skip_over_dtim %s\n",
 327                                 val ? "enabled" : "disabled");
 328                 dbgfs_pm->skip_over_dtim = val;
 329                 break;
 330         case MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS:
 331                 IWL_DEBUG_POWER(mvm, "skip_dtim_periods=%d\n", val);
 332                 dbgfs_pm->skip_dtim_periods = val;
 333                 break;
 334         case MVM_DEBUGFS_PM_RX_DATA_TIMEOUT:
 335                 IWL_DEBUG_POWER(mvm, "rx_data_timeout=%d\n", val);
 336                 dbgfs_pm->rx_data_timeout = val;
 337                 break;
 338         case MVM_DEBUGFS_PM_TX_DATA_TIMEOUT:
 339                 IWL_DEBUG_POWER(mvm, "tx_data_timeout=%d\n", val);
 340                 dbgfs_pm->tx_data_timeout = val;
 341                 break;
 342         case MVM_DEBUGFS_PM_DISABLE_POWER_OFF:
 343                 IWL_DEBUG_POWER(mvm, "disable_power_off=%d\n", val);
 344                 dbgfs_pm->disable_power_off = val;
 345         case MVM_DEBUGFS_PM_LPRX_ENA:
 346                 IWL_DEBUG_POWER(mvm, "lprx %s\n", val ? "enabled" : "disabled");
 347                 dbgfs_pm->lprx_ena = val;
 348                 break;
 349         case MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD:
 350                 IWL_DEBUG_POWER(mvm, "lprx_rssi_threshold=%d\n", val);
 351                 dbgfs_pm->lprx_rssi_threshold = val;
 352                 break;
 353         case MVM_DEBUGFS_PM_SNOOZE_ENABLE:
 354                 IWL_DEBUG_POWER(mvm, "snooze_enable=%d\n", val);
 355                 dbgfs_pm->snooze_ena = val;
 356                 break;
 357         }
 358 }
 359
 360 static ssize_t iwl_dbgfs_pm_params_write(struct file *file,
 361                                          const char __user *user_buf,
 362                                          size_t count, loff_t *ppos)
 363 {
 364         struct ieee80211_vif *vif = file->private_data;
 365         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 366         struct iwl_mvm *mvm = mvmvif->dbgfs_data;
 367         enum iwl_dbgfs_pm_mask param;
 368         char buf[32] = {};
 369         int val;
 370         int ret;
 371
 372         count = min_t(size_t, count, sizeof(buf) - 1);
 373         if (copy_from_user(buf, user_buf, count))
 374                 return -EFAULT;
 375
 376         if (!strncmp("keep_alive=", buf, 11)) {
 377                 if (sscanf(buf + 11, "%d", &val) != 1)
 378                         return -EINVAL;
 379                 param = MVM_DEBUGFS_PM_KEEP_ALIVE;
 380         } else if (!strncmp("skip_over_dtim=", buf, 15)) {
 381                 if (sscanf(buf + 15, "%d", &val) != 1)
 382                         return -EINVAL;
 383                 param = MVM_DEBUGFS_PM_SKIP_OVER_DTIM;
 384         } else if (!strncmp("skip_dtim_periods=", buf, 18)) {
 385                 if (sscanf(buf + 18, "%d", &val) != 1)
 386                         return -EINVAL;
 387                 param = MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS;
 388         } else if (!strncmp("rx_data_timeout=", buf, 16)) {
 389                 if (sscanf(buf + 16, "%d", &val) != 1)
 390                         return -EINVAL;
 391                 param = MVM_DEBUGFS_PM_RX_DATA_TIMEOUT;
 392         } else if (!strncmp("tx_data_timeout=", buf, 16)) {
 393                 if (sscanf(buf + 16, "%d", &val) != 1)
 394                         return -EINVAL;
 395                 param = MVM_DEBUGFS_PM_TX_DATA_TIMEOUT;
 396         } else if (!strncmp("disable_power_off=", buf, 18) &&
 397                    !(mvm->fw->ucode_capa.flags &
 398                      IWL_UCODE_TLV_FLAGS_DEVICE_PS_CMD)) {
 399                 if (sscanf(buf + 18, "%d", &val) != 1)
 400                         return -EINVAL;
 401                 param = MVM_DEBUGFS_PM_DISABLE_POWER_OFF;
 402         } else if (!strncmp("lprx=", buf, 5)) {
 403                 if (sscanf(buf + 5, "%d", &val) != 1)
 404                         return -EINVAL;
 405                 param = MVM_DEBUGFS_PM_LPRX_ENA;
 406         } else if (!strncmp("lprx_rssi_threshold=", buf, 20)) {
 407                 if (sscanf(buf + 20, "%d", &val) != 1)
 408                         return -EINVAL;
 409                 if (val > POWER_LPRX_RSSI_THRESHOLD_MAX || val <
 410                     POWER_LPRX_RSSI_THRESHOLD_MIN)
 411                         return -EINVAL;
 412                 param = MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD;
 413         } else if (!strncmp("snooze_enable=", buf, 14)) {
 414                 if (sscanf(buf + 14, "%d", &val) != 1)
 415                         return -EINVAL;
 416                 param = MVM_DEBUGFS_PM_SNOOZE_ENABLE;
 417         } else {
 418                 return -EINVAL;
 419         }
 420
 421         mutex_lock(&mvm->mutex);
 422         iwl_dbgfs_update_pm(mvm, vif, param, val);
 423         ret = iwl_mvm_power_update_mode(mvm, vif);
 424         mutex_unlock(&mvm->mutex);
 425
 426         return ret ?: count;
 427 }
 428
 429 static ssize_t iwl_dbgfs_pm_params_read(struct file *file,
 430                                         char __user *user_buf,
 431                                         size_t count, loff_t *ppos)
 432 {
 433         struct ieee80211_vif *vif = file->private_data;
 434         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 435         struct iwl_mvm *mvm = mvmvif->dbgfs_data;
 436         char buf[512];
 437         int bufsz = sizeof(buf);
 438         int pos;
 439
 440         pos = iwl_mvm_power_dbgfs_read(mvm, vif, buf, bufsz);
 441
 442         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 443 }
 444
 445 static ssize_t iwl_dbgfs_mac_params_read(struct file *file,
 446                                          char __user *user_buf,
 447                                          size_t count, loff_t *ppos)
 448 {
 449         struct ieee80211_vif *vif = file->private_data;
 450         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 451         struct iwl_mvm *mvm = mvmvif->dbgfs_data;
 452         u8 ap_sta_id;
 453         struct ieee80211_chanctx_conf *chanctx_conf;
 454         char buf[512];
 455         int bufsz = sizeof(buf);
 456         int pos = 0;
 457         int i;
 458
 459         mutex_lock(&mvm->mutex);
 460
 461         ap_sta_id = mvmvif->ap_sta_id;
 462
 463         pos += scnprintf(buf+pos, bufsz-pos, "mac id/color: %d / %d\n",
 464                          mvmvif->id, mvmvif->color);
 465         pos += scnprintf(buf+pos, bufsz-pos, "bssid: %pM\n",
 466                          vif->bss_conf.bssid);
 467         pos += scnprintf(buf+pos, bufsz-pos, "QoS:\n");
 468         for (i = 0; i < ARRAY_SIZE(mvmvif->queue_params); i++) {
 469                 pos += scnprintf(buf+pos, bufsz-pos,
 470                                  "\t%d: txop:%d - cw_min:%d - cw_max = %d - aifs = %d upasd = %d\n",
 471                                  i, mvmvif->queue_params[i].txop,
 472                                  mvmvif->queue_params[i].cw_min,
 473                                  mvmvif->queue_params[i].cw_max,
 474                                  mvmvif->queue_params[i].aifs,
 475                                  mvmvif->queue_params[i].uapsd);
 476         }
 477
 478         if (vif->type == NL80211_IFTYPE_STATION &&
 479             ap_sta_id != IWL_MVM_STATION_COUNT) {
 480                 struct ieee80211_sta *sta;
 481                 struct iwl_mvm_sta *mvm_sta;
 482
 483                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[ap_sta_id],
 484                                                 lockdep_is_held(&mvm->mutex));
 485                 mvm_sta = (void *)sta->drv_priv;
 486                 pos += scnprintf(buf+pos, bufsz-pos,
 487                                  "ap_sta_id %d - reduced Tx power %d\n",
 488                                  ap_sta_id, mvm_sta->bt_reduced_txpower);
 489         }
 490
 491         rcu_read_lock();
 492         chanctx_conf = rcu_dereference(vif->chanctx_conf);
 493         if (chanctx_conf) {
 494                 pos += scnprintf(buf+pos, bufsz-pos,
 495                                  "idle rx chains %d, active rx chains: %d\n",
 496                                  chanctx_conf->rx_chains_static,
 497                                  chanctx_conf->rx_chains_dynamic);
 498         }
 499         rcu_read_unlock();
 500
 501         mutex_unlock(&mvm->mutex);
 502
 503         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 504 }
 505
 506 #define BT_MBOX_MSG(_notif, _num, _field)                                    \
 507         ((le32_to_cpu((_notif)->mbox_msg[(_num)]) & BT_MBOX##_num##_##_field)\
 508         >> BT_MBOX##_num##_##_field##_POS)
 509
 510
 511 #define BT_MBOX_PRINT(_num, _field, _end)                                   \
 512                         pos += scnprintf(buf + pos, bufsz - pos,            \
 513                                          "\t%s: %d%s",                      \
 514                                          #_field,                           \
 515                                          BT_MBOX_MSG(notif, _num, _field),  \
 516                                          true ? "\n" : ", ");
 517
 518 static ssize_t iwl_dbgfs_bt_notif_read(struct file *file, char __user *user_buf,
 519                                        size_t count, loff_t *ppos)
 520 {
 521         struct iwl_mvm *mvm = file->private_data;
 522         struct iwl_bt_coex_profile_notif *notif = &mvm->last_bt_notif;
 523         char *buf;
 524         int ret, pos = 0, bufsz = sizeof(char) * 1024;
 525
 526         buf = kmalloc(bufsz, GFP_KERNEL);
 527         if (!buf)
 528                 return -ENOMEM;
 529
 530         mutex_lock(&mvm->mutex);
 531
 532         pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw0:\n");
 533
 534         BT_MBOX_PRINT(0, LE_SLAVE_LAT, false);
 535         BT_MBOX_PRINT(0, LE_PROF1, false);
 536         BT_MBOX_PRINT(0, LE_PROF2, false);
 537         BT_MBOX_PRINT(0, LE_PROF_OTHER, false);
 538         BT_MBOX_PRINT(0, CHL_SEQ_N, false);
 539         BT_MBOX_PRINT(0, INBAND_S, false);
 540         BT_MBOX_PRINT(0, LE_MIN_RSSI, false);
 541         BT_MBOX_PRINT(0, LE_SCAN, false);
 542         BT_MBOX_PRINT(0, LE_ADV, false);
 543         BT_MBOX_PRINT(0, LE_MAX_TX_POWER, false);
 544         BT_MBOX_PRINT(0, OPEN_CON_1, true);
 545
 546         pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw1:\n");
 547
 548         BT_MBOX_PRINT(1, BR_MAX_TX_POWER, false);
 549         BT_MBOX_PRINT(1, IP_SR, false);
 550         BT_MBOX_PRINT(1, LE_MSTR, false);
 551         BT_MBOX_PRINT(1, AGGR_TRFC_LD, false);
 552         BT_MBOX_PRINT(1, MSG_TYPE, false);
 553         BT_MBOX_PRINT(1, SSN, true);
 554
 555         pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw2:\n");
 556
 557         BT_MBOX_PRINT(2, SNIFF_ACT, false);
 558         BT_MBOX_PRINT(2, PAG, false);
 559         BT_MBOX_PRINT(2, INQUIRY, false);
 560         BT_MBOX_PRINT(2, CONN, false);
 561         BT_MBOX_PRINT(2, SNIFF_INTERVAL, false);
 562         BT_MBOX_PRINT(2, DISC, false);
 563         BT_MBOX_PRINT(2, SCO_TX_ACT, false);
 564         BT_MBOX_PRINT(2, SCO_RX_ACT, false);
 565         BT_MBOX_PRINT(2, ESCO_RE_TX, false);
 566         BT_MBOX_PRINT(2, SCO_DURATION, true);
 567
 568         pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw3:\n");
 569
 570         BT_MBOX_PRINT(3, SCO_STATE, false);
 571         BT_MBOX_PRINT(3, SNIFF_STATE, false);
 572         BT_MBOX_PRINT(3, A2DP_STATE, false);
 573         BT_MBOX_PRINT(3, ACL_STATE, false);
 574         BT_MBOX_PRINT(3, MSTR_STATE, false);
 575         BT_MBOX_PRINT(3, OBX_STATE, false);
 576         BT_MBOX_PRINT(3, OPEN_CON_2, false);
 577         BT_MBOX_PRINT(3, TRAFFIC_LOAD, false);
 578         BT_MBOX_PRINT(3, CHL_SEQN_LSB, false);
 579         BT_MBOX_PRINT(3, INBAND_P, false);
 580         BT_MBOX_PRINT(3, MSG_TYPE_2, false);
 581         BT_MBOX_PRINT(3, SSN_2, false);
 582         BT_MBOX_PRINT(3, UPDATE_REQUEST, true);
 583
 584         pos += scnprintf(buf+pos, bufsz-pos, "bt_status = %d\n",
 585                          notif->bt_status);
 586         pos += scnprintf(buf+pos, bufsz-pos, "bt_open_conn = %d\n",
 587                          notif->bt_open_conn);
 588         pos += scnprintf(buf+pos, bufsz-pos, "bt_traffic_load = %d\n",
 589                          notif->bt_traffic_load);
 590         pos += scnprintf(buf+pos, bufsz-pos, "bt_agg_traffic_load = %d\n",
 591                          notif->bt_agg_traffic_load);
 592         pos += scnprintf(buf+pos, bufsz-pos, "bt_ci_compliance = %d\n",
 593                          notif->bt_ci_compliance);
 594         pos += scnprintf(buf+pos, bufsz-pos, "primary_ch_lut = %d\n",
 595                          le32_to_cpu(notif->primary_ch_lut));
 596         pos += scnprintf(buf+pos, bufsz-pos, "secondary_ch_lut = %d\n",
 597                          le32_to_cpu(notif->secondary_ch_lut));
 598         pos += scnprintf(buf+pos, bufsz-pos, "bt_activity_grading = %d\n",
 599                          le32_to_cpu(notif->bt_activity_grading));
 600
 601         mutex_unlock(&mvm->mutex);
 602
 603         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 604         kfree(buf);
 605
 606         return ret;
 607 }
 608 #undef BT_MBOX_PRINT
 609
 610 static ssize_t iwl_dbgfs_bt_cmd_read(struct file *file, char __user *user_buf,
 611                                      size_t count, loff_t *ppos)
 612 {
 613         struct iwl_mvm *mvm = file->private_data;
 614         struct iwl_bt_coex_ci_cmd *cmd = &mvm->last_bt_ci_cmd;
 615         char buf[256];
 616         int bufsz = sizeof(buf);
 617         int pos = 0;
 618
 619         mutex_lock(&mvm->mutex);
 620
 621         pos += scnprintf(buf+pos, bufsz-pos, "Channel inhibition CMD\n");
 622         pos += scnprintf(buf+pos, bufsz-pos,
 623                        "\tPrimary Channel Bitmap 0x%016llx Fat: %d\n",
 624                        le64_to_cpu(cmd->bt_primary_ci),
 625                        !!cmd->co_run_bw_primary);
 626         pos += scnprintf(buf+pos, bufsz-pos,
 627                        "\tSecondary Channel Bitmap 0x%016llx Fat: %d\n",
 628                        le64_to_cpu(cmd->bt_secondary_ci),
 629                        !!cmd->co_run_bw_secondary);
 630
 631         pos += scnprintf(buf+pos, bufsz-pos, "BT Configuration CMD\n");
 632         pos += scnprintf(buf+pos, bufsz-pos, "\tACK Kill Mask 0x%08x\n",
 633                          iwl_bt_ack_kill_msk[mvm->bt_kill_msk]);
 634         pos += scnprintf(buf+pos, bufsz-pos, "\tCTS Kill Mask 0x%08x\n",
 635                          iwl_bt_cts_kill_msk[mvm->bt_kill_msk]);
 636
 637         mutex_unlock(&mvm->mutex);
 638
 639         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 640 }
 641
 642 #define PRINT_STATS_LE32(_str, _val)                                    \
 643                          pos += scnprintf(buf + pos, bufsz - pos,       \
 644                                           fmt_table, _str,              \
 645                                           le32_to_cpu(_val))
 646
 647 static ssize_t iwl_dbgfs_fw_rx_stats_read(struct file *file,
 648                                           char __user *user_buf, size_t count,
 649                                           loff_t *ppos)
 650 {
 651         struct iwl_mvm *mvm = file->private_data;
 652         static const char *fmt_table = "\t%-30s %10u\n";
 653         static const char *fmt_header = "%-32s\n";
 654         int pos = 0;
 655         char *buf;
 656         int ret;
 657         int bufsz = sizeof(struct mvm_statistics_rx_phy) * 20 +
 658                     sizeof(struct mvm_statistics_rx_non_phy) * 10 +
 659                     sizeof(struct mvm_statistics_rx_ht_phy) * 10 + 200;
 660         struct mvm_statistics_rx_phy *ofdm;
 661         struct mvm_statistics_rx_phy *cck;
 662         struct mvm_statistics_rx_non_phy *general;
 663         struct mvm_statistics_rx_ht_phy *ht;
 664
 665         buf = kzalloc(bufsz, GFP_KERNEL);
 666         if (!buf)
 667                 return -ENOMEM;
 668
 669         mutex_lock(&mvm->mutex);
 670
 671         ofdm = &mvm->rx_stats.ofdm;
 672         cck = &mvm->rx_stats.cck;
 673         general = &mvm->rx_stats.general;
 674         ht = &mvm->rx_stats.ofdm_ht;
 675
 676         pos += scnprintf(buf + pos, bufsz - pos, fmt_header,
 677                          "Statistics_Rx - OFDM");
 678         PRINT_STATS_LE32("ina_cnt", ofdm->ina_cnt);
 679         PRINT_STATS_LE32("fina_cnt", ofdm->fina_cnt);
 680         PRINT_STATS_LE32("plcp_err", ofdm->plcp_err);
 681         PRINT_STATS_LE32("crc32_err", ofdm->crc32_err);
 682         PRINT_STATS_LE32("overrun_err", ofdm->overrun_err);
 683         PRINT_STATS_LE32("early_overrun_err", ofdm->early_overrun_err);
 684         PRINT_STATS_LE32("crc32_good", ofdm->crc32_good);
 685         PRINT_STATS_LE32("false_alarm_cnt", ofdm->false_alarm_cnt);
 686         PRINT_STATS_LE32("fina_sync_err_cnt", ofdm->fina_sync_err_cnt);
 687         PRINT_STATS_LE32("sfd_timeout", ofdm->sfd_timeout);
 688         PRINT_STATS_LE32("fina_timeout", ofdm->fina_timeout);
 689         PRINT_STATS_LE32("unresponded_rts", ofdm->unresponded_rts);
 690         PRINT_STATS_LE32("rxe_frame_lmt_overrun",
 691                          ofdm->rxe_frame_limit_overrun);
 692         PRINT_STATS_LE32("sent_ack_cnt", ofdm->sent_ack_cnt);
 693         PRINT_STATS_LE32("sent_cts_cnt", ofdm->sent_cts_cnt);
 694         PRINT_STATS_LE32("sent_ba_rsp_cnt", ofdm->sent_ba_rsp_cnt);
 695         PRINT_STATS_LE32("dsp_self_kill", ofdm->dsp_self_kill);
 696         PRINT_STATS_LE32("mh_format_err", ofdm->mh_format_err);
 697         PRINT_STATS_LE32("re_acq_main_rssi_sum", ofdm->re_acq_main_rssi_sum);
 698         PRINT_STATS_LE32("reserved", ofdm->reserved);
 699
 700         pos += scnprintf(buf + pos, bufsz - pos, fmt_header,
 701                          "Statistics_Rx - CCK");
 702         PRINT_STATS_LE32("ina_cnt", cck->ina_cnt);
 703         PRINT_STATS_LE32("fina_cnt", cck->fina_cnt);
 704         PRINT_STATS_LE32("plcp_err", cck->plcp_err);
 705         PRINT_STATS_LE32("crc32_err", cck->crc32_err);
 706         PRINT_STATS_LE32("overrun_err", cck->overrun_err);
 707         PRINT_STATS_LE32("early_overrun_err", cck->early_overrun_err);
 708         PRINT_STATS_LE32("crc32_good", cck->crc32_good);
 709         PRINT_STATS_LE32("false_alarm_cnt", cck->false_alarm_cnt);
 710         PRINT_STATS_LE32("fina_sync_err_cnt", cck->fina_sync_err_cnt);
 711         PRINT_STATS_LE32("sfd_timeout", cck->sfd_timeout);
 712         PRINT_STATS_LE32("fina_timeout", cck->fina_timeout);
 713         PRINT_STATS_LE32("unresponded_rts", cck->unresponded_rts);
 714         PRINT_STATS_LE32("rxe_frame_lmt_overrun",
 715                          cck->rxe_frame_limit_overrun);
 716         PRINT_STATS_LE32("sent_ack_cnt", cck->sent_ack_cnt);
 717         PRINT_STATS_LE32("sent_cts_cnt", cck->sent_cts_cnt);
 718         PRINT_STATS_LE32("sent_ba_rsp_cnt", cck->sent_ba_rsp_cnt);
 719         PRINT_STATS_LE32("dsp_self_kill", cck->dsp_self_kill);
 720         PRINT_STATS_LE32("mh_format_err", cck->mh_format_err);
 721         PRINT_STATS_LE32("re_acq_main_rssi_sum", cck->re_acq_main_rssi_sum);
 722         PRINT_STATS_LE32("reserved", cck->reserved);
 723
 724         pos += scnprintf(buf + pos, bufsz - pos, fmt_header,
 725                          "Statistics_Rx - GENERAL");
 726         PRINT_STATS_LE32("bogus_cts", general->bogus_cts);
 727         PRINT_STATS_LE32("bogus_ack", general->bogus_ack);
 728         PRINT_STATS_LE32("non_bssid_frames", general->non_bssid_frames);
 729         PRINT_STATS_LE32("filtered_frames", general->filtered_frames);
 730         PRINT_STATS_LE32("non_channel_beacons", general->non_channel_beacons);
 731         PRINT_STATS_LE32("channel_beacons", general->channel_beacons);
 732         PRINT_STATS_LE32("num_missed_bcon", general->num_missed_bcon);
 733         PRINT_STATS_LE32("adc_rx_saturation_time",
 734                          general->adc_rx_saturation_time);
 735         PRINT_STATS_LE32("ina_detection_search_time",
 736                          general->ina_detection_search_time);
 737         PRINT_STATS_LE32("beacon_silence_rssi_a",
 738                          general->beacon_silence_rssi_a);
 739         PRINT_STATS_LE32("beacon_silence_rssi_b",
 740                          general->beacon_silence_rssi_b);
 741         PRINT_STATS_LE32("beacon_silence_rssi_c",
 742                          general->beacon_silence_rssi_c);
 743         PRINT_STATS_LE32("interference_data_flag",
 744                          general->interference_data_flag);
 745         PRINT_STATS_LE32("channel_load", general->channel_load);
 746         PRINT_STATS_LE32("dsp_false_alarms", general->dsp_false_alarms);
 747         PRINT_STATS_LE32("beacon_rssi_a", general->beacon_rssi_a);
 748         PRINT_STATS_LE32("beacon_rssi_b", general->beacon_rssi_b);
 749         PRINT_STATS_LE32("beacon_rssi_c", general->beacon_rssi_c);
 750         PRINT_STATS_LE32("beacon_energy_a", general->beacon_energy_a);
 751         PRINT_STATS_LE32("beacon_energy_b", general->beacon_energy_b);
 752         PRINT_STATS_LE32("beacon_energy_c", general->beacon_energy_c);
 753         PRINT_STATS_LE32("num_bt_kills", general->num_bt_kills);
 754         PRINT_STATS_LE32("directed_data_mpdu", general->directed_data_mpdu);
 755
 756         pos += scnprintf(buf + pos, bufsz - pos, fmt_header,
 757                          "Statistics_Rx - HT");
 758         PRINT_STATS_LE32("plcp_err", ht->plcp_err);
 759         PRINT_STATS_LE32("overrun_err", ht->overrun_err);
 760         PRINT_STATS_LE32("early_overrun_err", ht->early_overrun_err);
 761         PRINT_STATS_LE32("crc32_good", ht->crc32_good);
 762         PRINT_STATS_LE32("crc32_err", ht->crc32_err);
 763         PRINT_STATS_LE32("mh_format_err", ht->mh_format_err);
 764         PRINT_STATS_LE32("agg_crc32_good", ht->agg_crc32_good);
 765         PRINT_STATS_LE32("agg_mpdu_cnt", ht->agg_mpdu_cnt);
 766         PRINT_STATS_LE32("agg_cnt", ht->agg_cnt);
 767         PRINT_STATS_LE32("unsupport_mcs", ht->unsupport_mcs);
 768
 769         mutex_unlock(&mvm->mutex);
 770
 771         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 772         kfree(buf);
 773
 774         return ret;
 775 }
 776 #undef PRINT_STAT_LE32
 777
 778 static ssize_t iwl_dbgfs_fw_restart_write(struct file *file,
 779                                           const char __user *user_buf,
 780                                           size_t count, loff_t *ppos)
 781 {
 782         struct iwl_mvm *mvm = file->private_data;
 783         int ret;
 784
 785         mutex_lock(&mvm->mutex);
 786
 787         /* allow one more restart that we're provoking here */
 788         if (mvm->restart_fw >= 0)
 789                 mvm->restart_fw++;
 790
 791         /* take the return value to make compiler happy - it will fail anyway */
 792         ret = iwl_mvm_send_cmd_pdu(mvm, REPLY_ERROR, CMD_SYNC, 0, NULL);
 793
 794         mutex_unlock(&mvm->mutex);
 795
 796         return count;
 797 }
 798
 799 static ssize_t
 800 iwl_dbgfs_scan_ant_rxchain_read(struct file *file,
 801                                 char __user *user_buf,
 802                                 size_t count, loff_t *ppos)
 803 {
 804         struct iwl_mvm *mvm = file->private_data;
 805         int pos = 0;
 806         char buf[32];
 807         const size_t bufsz = sizeof(buf);
 808
 809         /* print which antennas were set for the scan command by the user */
 810         pos += scnprintf(buf + pos, bufsz - pos, "Antennas for scan: ");
 811         if (mvm->scan_rx_ant & ANT_A)
 812                 pos += scnprintf(buf + pos, bufsz - pos, "A");
 813         if (mvm->scan_rx_ant & ANT_B)
 814                 pos += scnprintf(buf + pos, bufsz - pos, "B");
 815         if (mvm->scan_rx_ant & ANT_C)
 816                 pos += scnprintf(buf + pos, bufsz - pos, "C");
 817         pos += scnprintf(buf + pos, bufsz - pos, " (%hhx)\n", mvm->scan_rx_ant);
 818
 819         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 820 }
 821
 822 static ssize_t
 823 iwl_dbgfs_scan_ant_rxchain_write(struct file *file,
 824                                  const char __user *user_buf,
 825                                  size_t count, loff_t *ppos)
 826 {
 827         struct iwl_mvm *mvm = file->private_data;
 828         char buf[8];
 829         int buf_size;
 830         u8 scan_rx_ant;
 831
 832         memset(buf, 0, sizeof(buf));
 833         buf_size = min(count, sizeof(buf) - 1);
 834
 835         /* get the argument from the user and check if it is valid */
 836         if (copy_from_user(buf, user_buf, buf_size))
 837                 return -EFAULT;
 838         if (sscanf(buf, "%hhx", &scan_rx_ant) != 1)
 839                 return -EINVAL;
 840         if (scan_rx_ant > ANT_ABC)
 841                 return -EINVAL;
 842         if (scan_rx_ant & ~iwl_fw_valid_rx_ant(mvm->fw))
 843                 return -EINVAL;
 844
 845         /* change the rx antennas for scan command */
 846         mvm->scan_rx_ant = scan_rx_ant;
 847
 848         return count;
 849 }
 850
 851
 852 static void iwl_dbgfs_update_bf(struct ieee80211_vif *vif,
 853                                 enum iwl_dbgfs_bf_mask param, int value)
 854 {
 855         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 856         struct iwl_dbgfs_bf *dbgfs_bf = &mvmvif->dbgfs_bf;
 857
 858         dbgfs_bf->mask |= param;
 859
 860         switch (param) {
 861         case MVM_DEBUGFS_BF_ENERGY_DELTA:
 862                 dbgfs_bf->bf_energy_delta = value;
 863                 break;
 864         case MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA:
 865                 dbgfs_bf->bf_roaming_energy_delta = value;
 866                 break;
 867         case MVM_DEBUGFS_BF_ROAMING_STATE:
 868                 dbgfs_bf->bf_roaming_state = value;
 869                 break;
 870         case MVM_DEBUGFS_BF_TEMP_THRESHOLD:
 871                 dbgfs_bf->bf_temp_threshold = value;
 872                 break;
 873         case MVM_DEBUGFS_BF_TEMP_FAST_FILTER:
 874                 dbgfs_bf->bf_temp_fast_filter = value;
 875                 break;
 876         case MVM_DEBUGFS_BF_TEMP_SLOW_FILTER:
 877                 dbgfs_bf->bf_temp_slow_filter = value;
 878                 break;
 879         case MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER:
 880                 dbgfs_bf->bf_enable_beacon_filter = value;
 881                 break;
 882         case MVM_DEBUGFS_BF_DEBUG_FLAG:
 883                 dbgfs_bf->bf_debug_flag = value;
 884                 break;
 885         case MVM_DEBUGFS_BF_ESCAPE_TIMER:
 886                 dbgfs_bf->bf_escape_timer = value;
 887                 break;
 888         case MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT:
 889                 dbgfs_bf->ba_enable_beacon_abort = value;
 890                 break;
 891         case MVM_DEBUGFS_BA_ESCAPE_TIMER:
 892                 dbgfs_bf->ba_escape_timer = value;
 893                 break;
 894         }
 895 }
 896
 897 static ssize_t iwl_dbgfs_bf_params_write(struct file *file,
 898                                          const char __user *user_buf,
 899                                          size_t count, loff_t *ppos)
 900 {
 901         struct ieee80211_vif *vif = file->private_data;
 902         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 903         struct iwl_mvm *mvm = mvmvif->dbgfs_data;
 904         enum iwl_dbgfs_bf_mask param;
 905         char buf[256];
 906         int buf_size;
 907         int value;
 908         int ret = 0;
 909
 910         memset(buf, 0, sizeof(buf));
 911         buf_size = min(count, sizeof(buf) - 1);
 912         if (copy_from_user(buf, user_buf, buf_size))
 913                 return -EFAULT;
 914
 915         if (!strncmp("bf_energy_delta=", buf, 16)) {
 916                 if (sscanf(buf+16, "%d", &value) != 1)
 917                         return -EINVAL;
 918                 if (value < IWL_BF_ENERGY_DELTA_MIN ||
 919                     value > IWL_BF_ENERGY_DELTA_MAX)
 920                         return -EINVAL;
 921                 param = MVM_DEBUGFS_BF_ENERGY_DELTA;
 922         } else if (!strncmp("bf_roaming_energy_delta=", buf, 24)) {
 923                 if (sscanf(buf+24, "%d", &value) != 1)
 924                         return -EINVAL;
 925                 if (value < IWL_BF_ROAMING_ENERGY_DELTA_MIN ||
 926                     value > IWL_BF_ROAMING_ENERGY_DELTA_MAX)
 927                         return -EINVAL;
 928                 param = MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA;
 929         } else if (!strncmp("bf_roaming_state=", buf, 17)) {
 930                 if (sscanf(buf+17, "%d", &value) != 1)
 931                         return -EINVAL;
 932                 if (value < IWL_BF_ROAMING_STATE_MIN ||
 933                     value > IWL_BF_ROAMING_STATE_MAX)
 934                         return -EINVAL;
 935                 param = MVM_DEBUGFS_BF_ROAMING_STATE;
 936         } else if (!strncmp("bf_temp_threshold=", buf, 18)) {
 937                 if (sscanf(buf+18, "%d", &value) != 1)
 938                         return -EINVAL;
 939                 if (value < IWL_BF_TEMP_THRESHOLD_MIN ||
 940                     value > IWL_BF_TEMP_THRESHOLD_MAX)
 941                         return -EINVAL;
 942                 param = MVM_DEBUGFS_BF_TEMP_THRESHOLD;
 943         } else if (!strncmp("bf_temp_fast_filter=", buf, 20)) {
 944                 if (sscanf(buf+20, "%d", &value) != 1)
 945                         return -EINVAL;
 946                 if (value < IWL_BF_TEMP_FAST_FILTER_MIN ||
 947                     value > IWL_BF_TEMP_FAST_FILTER_MAX)
 948                         return -EINVAL;
 949                 param = MVM_DEBUGFS_BF_TEMP_FAST_FILTER;
 950         } else if (!strncmp("bf_temp_slow_filter=", buf, 20)) {
 951                 if (sscanf(buf+20, "%d", &value) != 1)
 952                         return -EINVAL;
 953                 if (value < IWL_BF_TEMP_SLOW_FILTER_MIN ||
 954                     value > IWL_BF_TEMP_SLOW_FILTER_MAX)
 955                         return -EINVAL;
 956                 param = MVM_DEBUGFS_BF_TEMP_SLOW_FILTER;
 957         } else if (!strncmp("bf_enable_beacon_filter=", buf, 24)) {
 958                 if (sscanf(buf+24, "%d", &value) != 1)
 959                         return -EINVAL;
 960                 if (value < 0 || value > 1)
 961                         return -EINVAL;
 962                 param = MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER;
 963         } else if (!strncmp("bf_debug_flag=", buf, 14)) {
 964                 if (sscanf(buf+14, "%d", &value) != 1)
 965                         return -EINVAL;
 966                 if (value < 0 || value > 1)
 967                         return -EINVAL;
 968                 param = MVM_DEBUGFS_BF_DEBUG_FLAG;
 969         } else if (!strncmp("bf_escape_timer=", buf, 16)) {
 970                 if (sscanf(buf+16, "%d", &value) != 1)
 971                         return -EINVAL;
 972                 if (value < IWL_BF_ESCAPE_TIMER_MIN ||
 973                     value > IWL_BF_ESCAPE_TIMER_MAX)
 974                         return -EINVAL;
 975                 param = MVM_DEBUGFS_BF_ESCAPE_TIMER;
 976         } else if (!strncmp("ba_escape_timer=", buf, 16)) {
 977                 if (sscanf(buf+16, "%d", &value) != 1)
 978                         return -EINVAL;
 979                 if (value < IWL_BA_ESCAPE_TIMER_MIN ||
 980                     value > IWL_BA_ESCAPE_TIMER_MAX)
 981                         return -EINVAL;
 982                 param = MVM_DEBUGFS_BA_ESCAPE_TIMER;
 983         } else if (!strncmp("ba_enable_beacon_abort=", buf, 23)) {
 984                 if (sscanf(buf+23, "%d", &value) != 1)
 985                         return -EINVAL;
 986                 if (value < 0 || value > 1)
 987                         return -EINVAL;
 988                 param = MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT;
 989         } else {
 990                 return -EINVAL;
 991         }
 992
 993         mutex_lock(&mvm->mutex);
 994         iwl_dbgfs_update_bf(vif, param, value);
 995         if (param == MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER && !value) {
 996                 ret = iwl_mvm_disable_beacon_filter(mvm, vif);
 997         } else {
 998                 ret = iwl_mvm_enable_beacon_filter(mvm, vif);
 999         }
1000         mutex_unlock(&mvm->mutex);
1001
1002         return ret ?: count;
1003 }
1004
1005 static ssize_t iwl_dbgfs_bf_params_read(struct file *file,
1006                                         char __user *user_buf,
1007                                         size_t count, loff_t *ppos)
1008 {
1009         struct ieee80211_vif *vif = file->private_data;
1010         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1011         char buf[256];
1012         int pos = 0;
1013         const size_t bufsz = sizeof(buf);
1014         struct iwl_beacon_filter_cmd cmd = {
1015                 IWL_BF_CMD_CONFIG_DEFAULTS,
1016                 .bf_enable_beacon_filter =
1017                         cpu_to_le32(IWL_BF_ENABLE_BEACON_FILTER_DEFAULT),
1018                 .ba_enable_beacon_abort =
1019                         cpu_to_le32(IWL_BA_ENABLE_BEACON_ABORT_DEFAULT),
1020         };
1021
1022         iwl_mvm_beacon_filter_debugfs_parameters(vif, &cmd);
1023         if (mvmvif->bf_data.bf_enabled)
1024                 cmd.bf_enable_beacon_filter = cpu_to_le32(1);
1025         else
1026                 cmd.bf_enable_beacon_filter = 0;
1027
1028         pos += scnprintf(buf+pos, bufsz-pos, "bf_energy_delta = %d\n",
1029                          le32_to_cpu(cmd.bf_energy_delta));
1030         pos += scnprintf(buf+pos, bufsz-pos, "bf_roaming_energy_delta = %d\n",
1031                          le32_to_cpu(cmd.bf_roaming_energy_delta));
1032         pos += scnprintf(buf+pos, bufsz-pos, "bf_roaming_state = %d\n",
1033                          le32_to_cpu(cmd.bf_roaming_state));
1034         pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_threshold = %d\n",
1035                          le32_to_cpu(cmd.bf_temp_threshold));
1036         pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_fast_filter = %d\n",
1037                          le32_to_cpu(cmd.bf_temp_fast_filter));
1038         pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_slow_filter = %d\n",
1039                          le32_to_cpu(cmd.bf_temp_slow_filter));
1040         pos += scnprintf(buf+pos, bufsz-pos, "bf_enable_beacon_filter = %d\n",
1041                          le32_to_cpu(cmd.bf_enable_beacon_filter));
1042         pos += scnprintf(buf+pos, bufsz-pos, "bf_debug_flag = %d\n",
1043                          le32_to_cpu(cmd.bf_debug_flag));
1044         pos += scnprintf(buf+pos, bufsz-pos, "bf_escape_timer = %d\n",
1045                          le32_to_cpu(cmd.bf_escape_timer));
1046         pos += scnprintf(buf+pos, bufsz-pos, "ba_escape_timer = %d\n",
1047                          le32_to_cpu(cmd.ba_escape_timer));
1048         pos += scnprintf(buf+pos, bufsz-pos, "ba_enable_beacon_abort = %d\n",
1049                          le32_to_cpu(cmd.ba_enable_beacon_abort));
1050
1051         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1052 }
1053
1054 #ifdef CONFIG_PM_SLEEP
1055 static ssize_t iwl_dbgfs_d3_sram_write(struct file *file,
1056                                        const char __user *user_buf,
1057                                        size_t count, loff_t *ppos)
1058 {
1059         struct iwl_mvm *mvm = file->private_data;
1060         char buf[8] = {};
1061         int store;
1062
1063         count = min_t(size_t, count, sizeof(buf) - 1);
1064         if (copy_from_user(buf, user_buf, count))
1065                 return -EFAULT;
1066
1067         if (sscanf(buf, "%d", &store) != 1)
1068                 return -EINVAL;
1069
1070         mvm->store_d3_resume_sram = store;
1071
1072         return count;
1073 }
1074
1075 static ssize_t iwl_dbgfs_d3_sram_read(struct file *file, char __user *user_buf,
1076                                       size_t count, loff_t *ppos)
1077 {
1078         struct iwl_mvm *mvm = file->private_data;
1079         const struct fw_img *img;
1080         int ofs, len, pos = 0;
1081         size_t bufsz, ret;
1082         char *buf;
1083         u8 *ptr = mvm->d3_resume_sram;
1084
1085         img = &mvm->fw->img[IWL_UCODE_WOWLAN];
1086         len = img->sec[IWL_UCODE_SECTION_DATA].len;
1087
1088         bufsz = len * 4 + 256;
1089         buf = kzalloc(bufsz, GFP_KERNEL);
1090         if (!buf)
1091                 return -ENOMEM;
1092
1093         pos += scnprintf(buf, bufsz, "D3 SRAM capture: %sabled\n",
1094                          mvm->store_d3_resume_sram ? "en" : "dis");
1095
1096         if (ptr) {
1097                 for (ofs = 0; ofs < len; ofs += 16) {
1098                         pos += scnprintf(buf + pos, bufsz - pos,
1099                                          "0x%.4x ", ofs);
1100                         hex_dump_to_buffer(ptr + ofs, 16, 16, 1, buf + pos,
1101                                            bufsz - pos, false);
1102                         pos += strlen(buf + pos);
1103                         if (bufsz - pos > 0)
1104                                 buf[pos++] = '\n';
1105                 }
1106         } else {
1107                 pos += scnprintf(buf + pos, bufsz - pos,
1108                                  "(no data captured)\n");
1109         }
1110
1111         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1112
1113         kfree(buf);
1114
1115         return ret;
1116 }
1117 #endif
1118
1119 #define MVM_DEBUGFS_READ_FILE_OPS(name)                                 \
1120 static const struct file_operations iwl_dbgfs_##name##_ops = {  \
1121         .read = iwl_dbgfs_##name##_read,                                \
1122         .open = simple_open,                                            \
1123         .llseek = generic_file_llseek,                                  \
1124 }
1125
1126 #define MVM_DEBUGFS_READ_WRITE_FILE_OPS(name)                           \
1127 static const struct file_operations iwl_dbgfs_##name##_ops = {  \
1128         .write = iwl_dbgfs_##name##_write,                              \
1129         .read = iwl_dbgfs_##name##_read,                                \
1130         .open = simple_open,                                            \
1131         .llseek = generic_file_llseek,                                  \
1132 };
1133
1134 #define MVM_DEBUGFS_WRITE_FILE_OPS(name)                                \
1135 static const struct file_operations iwl_dbgfs_##name##_ops = {  \
1136         .write = iwl_dbgfs_##name##_write,                              \
1137         .open = simple_open,                                            \
1138         .llseek = generic_file_llseek,                                  \
1139 };
1140
1141 #define MVM_DEBUGFS_ADD_FILE(name, parent, mode) do {                   \
1142                 if (!debugfs_create_file(#name, mode, parent, mvm,      \
1143                                          &iwl_dbgfs_##name##_ops))      \
1144                         goto err;                                       \
1145         } while (0)
1146
1147 #define MVM_DEBUGFS_ADD_FILE_VIF(name, parent, mode) do {               \
1148                 if (!debugfs_create_file(#name, mode, parent, vif,      \
1149                                          &iwl_dbgfs_##name##_ops))      \
1150                         goto err;                                       \
1151         } while (0)
1152
1153 /* Device wide debugfs entries */
1154 MVM_DEBUGFS_WRITE_FILE_OPS(tx_flush);
1155 MVM_DEBUGFS_WRITE_FILE_OPS(sta_drain);
1156 MVM_DEBUGFS_READ_WRITE_FILE_OPS(sram);
1157 MVM_DEBUGFS_READ_FILE_OPS(stations);
1158 MVM_DEBUGFS_READ_FILE_OPS(bt_notif);
1159 MVM_DEBUGFS_READ_FILE_OPS(bt_cmd);
1160 MVM_DEBUGFS_READ_WRITE_FILE_OPS(disable_power_off);
1161 MVM_DEBUGFS_READ_FILE_OPS(fw_rx_stats);
1162 MVM_DEBUGFS_WRITE_FILE_OPS(fw_restart);
1163 MVM_DEBUGFS_READ_WRITE_FILE_OPS(scan_ant_rxchain);
1164
1165 #ifdef CONFIG_PM_SLEEP
1166 MVM_DEBUGFS_READ_WRITE_FILE_OPS(d3_sram);
1167 #endif
1168
1169 /* Interface specific debugfs entries */
1170 MVM_DEBUGFS_READ_FILE_OPS(mac_params);
1171 MVM_DEBUGFS_READ_WRITE_FILE_OPS(pm_params);
1172 MVM_DEBUGFS_READ_WRITE_FILE_OPS(bf_params);
1173
1174 int iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir)
1175 {
1176         char buf[100];
1177
1178         mvm->debugfs_dir = dbgfs_dir;
1179
1180         MVM_DEBUGFS_ADD_FILE(tx_flush, mvm->debugfs_dir, S_IWUSR);
1181         MVM_DEBUGFS_ADD_FILE(sta_drain, mvm->debugfs_dir, S_IWUSR);
1182         MVM_DEBUGFS_ADD_FILE(sram, mvm->debugfs_dir, S_IWUSR | S_IRUSR);
1183         MVM_DEBUGFS_ADD_FILE(stations, dbgfs_dir, S_IRUSR);
1184         MVM_DEBUGFS_ADD_FILE(bt_notif, dbgfs_dir, S_IRUSR);
1185         MVM_DEBUGFS_ADD_FILE(bt_cmd, dbgfs_dir, S_IRUSR);
1186         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DEVICE_PS_CMD)
1187                 MVM_DEBUGFS_ADD_FILE(disable_power_off, mvm->debugfs_dir,
1188                                      S_IRUSR | S_IWUSR);
1189         MVM_DEBUGFS_ADD_FILE(fw_rx_stats, mvm->debugfs_dir, S_IRUSR);
1190         MVM_DEBUGFS_ADD_FILE(fw_restart, mvm->debugfs_dir, S_IWUSR);
1191         MVM_DEBUGFS_ADD_FILE(scan_ant_rxchain, mvm->debugfs_dir,
1192                              S_IWUSR | S_IRUSR);
1193 #ifdef CONFIG_PM_SLEEP
1194         MVM_DEBUGFS_ADD_FILE(d3_sram, mvm->debugfs_dir, S_IRUSR | S_IWUSR);
1195         MVM_DEBUGFS_ADD_FILE(d3_test, mvm->debugfs_dir, S_IRUSR);
1196         if (!debugfs_create_bool("d3_wake_sysassert", S_IRUSR | S_IWUSR,
1197                                  mvm->debugfs_dir, &mvm->d3_wake_sysassert))
1198                 goto err;
1199 #endif
1200
1201         /*
1202          * Create a symlink with mac80211. It will be removed when mac80211
1203          * exists (before the opmode exists which removes the target.)
1204          */
1205         snprintf(buf, 100, "../../%s/%s",
1206                  dbgfs_dir->d_parent->d_parent->d_name.name,
1207                  dbgfs_dir->d_parent->d_name.name);
1208         if (!debugfs_create_symlink("iwlwifi", mvm->hw->wiphy->debugfsdir, buf))
1209                 goto err;
1210
1211         return 0;
1212 err:
1213         IWL_ERR(mvm, "Can't create the mvm debugfs directory\n");
1214         return -ENOMEM;
1215 }
1216
1217 void iwl_mvm_vif_dbgfs_register(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1218 {
1219         struct dentry *dbgfs_dir = vif->debugfs_dir;
1220         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1221         char buf[100];
1222
1223         /*
1224          * Check if debugfs directory already exist before creating it.
1225          * This may happen when, for example, resetting hw or suspend-resume
1226          */
1227         if (!dbgfs_dir || mvmvif->dbgfs_dir)
1228                 return;
1229
1230         mvmvif->dbgfs_dir = debugfs_create_dir("iwlmvm", dbgfs_dir);
1231         mvmvif->dbgfs_data = mvm;
1232
1233         if (!mvmvif->dbgfs_dir) {
1234                 IWL_ERR(mvm, "Failed to create debugfs directory under %s\n",
1235                         dbgfs_dir->d_name.name);
1236                 return;
1237         }
1238
1239         if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM &&
1240             vif->type == NL80211_IFTYPE_STATION && !vif->p2p)
1241                 MVM_DEBUGFS_ADD_FILE_VIF(pm_params, mvmvif->dbgfs_dir, S_IWUSR |
1242                                          S_IRUSR);
1243
1244         MVM_DEBUGFS_ADD_FILE_VIF(mac_params, mvmvif->dbgfs_dir,
1245                                  S_IRUSR);
1246
1247         if (vif->type == NL80211_IFTYPE_STATION && !vif->p2p &&
1248             mvmvif == mvm->bf_allowed_vif)
1249                 MVM_DEBUGFS_ADD_FILE_VIF(bf_params, mvmvif->dbgfs_dir,
1250                                          S_IRUSR | S_IWUSR);
1251
1252         /*
1253          * Create symlink for convenience pointing to interface specific
1254          * debugfs entries for the driver. For example, under
1255          * /sys/kernel/debug/iwlwifi/0000\:02\:00.0/iwlmvm/
1256          * find
1257          * netdev:wlan0 -> ../../../ieee80211/phy0/netdev:wlan0/iwlmvm/
1258          */
1259         snprintf(buf, 100, "../../../%s/%s/%s/%s",
1260                  dbgfs_dir->d_parent->d_parent->d_name.name,
1261                  dbgfs_dir->d_parent->d_name.name,
1262                  dbgfs_dir->d_name.name,
1263                  mvmvif->dbgfs_dir->d_name.name);
1264
1265         mvmvif->dbgfs_slink = debugfs_create_symlink(dbgfs_dir->d_name.name,
1266                                                      mvm->debugfs_dir, buf);
1267         if (!mvmvif->dbgfs_slink)
1268                 IWL_ERR(mvm, "Can't create debugfs symbolic link under %s\n",
1269                         dbgfs_dir->d_name.name);
1270         return;
1271 err:
1272         IWL_ERR(mvm, "Can't create debugfs entity\n");
1273 }
1274
1275 void iwl_mvm_vif_dbgfs_clean(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1276 {
1277         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1278
1279         debugfs_remove(mvmvif->dbgfs_slink);
1280         mvmvif->dbgfs_slink = NULL;
1281
1282         debugfs_remove_recursive(mvmvif->dbgfs_dir);
1283         mvmvif->dbgfs_dir = NULL;
1284 }