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  *
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  37  * modification, are permitted provided that the following conditions
  38  * are met:
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  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         if (sta_id < 0 || sta_id >= IWL_MVM_STATION_COUNT)
 123                 return -EINVAL;
 124         if (drain < 0 || drain > 1)
 125                 return -EINVAL;
 126
 127         mutex_lock(&mvm->mutex);
 128
 129         sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
 130                                         lockdep_is_held(&mvm->mutex));
 131         if (IS_ERR_OR_NULL(sta))
 132                 ret = -ENOENT;
 133         else
 134                 ret = iwl_mvm_drain_sta(mvm, (void *)sta->drv_priv, drain) ? :
 135                         count;
 136
 137         mutex_unlock(&mvm->mutex);
 138
 139         return ret;
 140 }
 141
 142 static ssize_t iwl_dbgfs_sram_read(struct file *file, char __user *user_buf,
 143                                    size_t count, loff_t *ppos)
 144 {
 145         struct iwl_mvm *mvm = file->private_data;
 146         const struct fw_img *img;
 147         int ofs, len, pos = 0;
 148         size_t bufsz, ret;
 149         char *buf;
 150         u8 *ptr;
 151
 152         if (!mvm->ucode_loaded)
 153                 return -EINVAL;
 154
 155         /* default is to dump the entire data segment */
 156         if (!mvm->dbgfs_sram_offset && !mvm->dbgfs_sram_len) {
 157                 img = &mvm->fw->img[mvm->cur_ucode];
 158                 ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
 159                 len = img->sec[IWL_UCODE_SECTION_DATA].len;
 160         } else {
 161                 ofs = mvm->dbgfs_sram_offset;
 162                 len = mvm->dbgfs_sram_len;
 163         }
 164
 165         bufsz = len * 4 + 256;
 166         buf = kzalloc(bufsz, GFP_KERNEL);
 167         if (!buf)
 168                 return -ENOMEM;
 169
 170         ptr = kzalloc(len, GFP_KERNEL);
 171         if (!ptr) {
 172                 kfree(buf);
 173                 return -ENOMEM;
 174         }
 175
 176         pos += scnprintf(buf + pos, bufsz - pos, "sram_len: 0x%x\n", len);
 177         pos += scnprintf(buf + pos, bufsz - pos, "sram_offset: 0x%x\n", ofs);
 178
 179         iwl_trans_read_mem_bytes(mvm->trans, ofs, ptr, len);
 180         for (ofs = 0; ofs < len; ofs += 16) {
 181                 pos += scnprintf(buf + pos, bufsz - pos, "0x%.4x ", ofs);
 182                 hex_dump_to_buffer(ptr + ofs, 16, 16, 1, buf + pos,
 183                                    bufsz - pos, false);
 184                 pos += strlen(buf + pos);
 185                 if (bufsz - pos > 0)
 186                         buf[pos++] = '\n';
 187         }
 188
 189         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 190
 191         kfree(buf);
 192         kfree(ptr);
 193
 194         return ret;
 195 }
 196
 197 static ssize_t iwl_dbgfs_sram_write(struct file *file,
 198                                     const char __user *user_buf, size_t count,
 199                                     loff_t *ppos)
 200 {
 201         struct iwl_mvm *mvm = file->private_data;
 202         char buf[64];
 203         int buf_size;
 204         u32 offset, len;
 205
 206         memset(buf, 0, sizeof(buf));
 207         buf_size = min(count, sizeof(buf) -  1);
 208         if (copy_from_user(buf, user_buf, buf_size))
 209                 return -EFAULT;
 210
 211         if (sscanf(buf, "%x,%x", &offset, &len) == 2) {
 212                 if ((offset & 0x3) || (len & 0x3))
 213                         return -EINVAL;
 214                 mvm->dbgfs_sram_offset = offset;
 215                 mvm->dbgfs_sram_len = len;
 216         } else {
 217                 mvm->dbgfs_sram_offset = 0;
 218                 mvm->dbgfs_sram_len = 0;
 219         }
 220
 221         return count;
 222 }
 223
 224 static ssize_t iwl_dbgfs_stations_read(struct file *file, char __user *user_buf,
 225                                        size_t count, loff_t *ppos)
 226 {
 227         struct iwl_mvm *mvm = file->private_data;
 228         struct ieee80211_sta *sta;
 229         char buf[400];
 230         int i, pos = 0, bufsz = sizeof(buf);
 231
 232         mutex_lock(&mvm->mutex);
 233
 234         for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
 235                 pos += scnprintf(buf + pos, bufsz - pos, "%.2d: ", i);
 236                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
 237                                                 lockdep_is_held(&mvm->mutex));
 238                 if (!sta)
 239                         pos += scnprintf(buf + pos, bufsz - pos, "N/A\n");
 240                 else if (IS_ERR(sta))
 241                         pos += scnprintf(buf + pos, bufsz - pos, "%ld\n",
 242                                          PTR_ERR(sta));
 243                 else
 244                         pos += scnprintf(buf + pos, bufsz - pos, "%pM\n",
 245                                          sta->addr);
 246         }
 247
 248         mutex_unlock(&mvm->mutex);
 249
 250         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 251 }
 252
 253 static ssize_t iwl_dbgfs_disable_power_off_read(struct file *file,
 254                                                 char __user *user_buf,
 255                                                 size_t count, loff_t *ppos)
 256 {
 257         struct iwl_mvm *mvm = file->private_data;
 258         char buf[64];
 259         int bufsz = sizeof(buf);
 260         int pos = 0;
 261
 262         pos += scnprintf(buf+pos, bufsz-pos, "disable_power_off_d0=%d\n",
 263                          mvm->disable_power_off);
 264         pos += scnprintf(buf+pos, bufsz-pos, "disable_power_off_d3=%d\n",
 265                          mvm->disable_power_off_d3);
 266
 267         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 268 }
 269
 270 static ssize_t iwl_dbgfs_disable_power_off_write(struct file *file,
 271                                                  const char __user *user_buf,
 272                                                  size_t count, loff_t *ppos)
 273 {
 274         struct iwl_mvm *mvm = file->private_data;
 275         char buf[64] = {};
 276         int ret;
 277         int val;
 278
 279         if (!mvm->ucode_loaded)
 280                 return -EIO;
 281
 282         count = min_t(size_t, count, sizeof(buf) - 1);
 283         if (copy_from_user(buf, user_buf, count))
 284                 return -EFAULT;
 285
 286         if (!strncmp("disable_power_off_d0=", buf, 21)) {
 287                 if (sscanf(buf + 21, "%d", &val) != 1)
 288                         return -EINVAL;
 289                 mvm->disable_power_off = val;
 290         } else if (!strncmp("disable_power_off_d3=", buf, 21)) {
 291                 if (sscanf(buf + 21, "%d", &val) != 1)
 292                         return -EINVAL;
 293                 mvm->disable_power_off_d3 = val;
 294         } else {
 295                 return -EINVAL;
 296         }
 297
 298         mutex_lock(&mvm->mutex);
 299         ret = iwl_mvm_power_update_device_mode(mvm);
 300         mutex_unlock(&mvm->mutex);
 301
 302         return ret ?: count;
 303 }
 304
 305 static void iwl_dbgfs_update_pm(struct iwl_mvm *mvm,
 306                                  struct ieee80211_vif *vif,
 307                                  enum iwl_dbgfs_pm_mask param, int val)
 308 {
 309         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 310         struct iwl_dbgfs_pm *dbgfs_pm = &mvmvif->dbgfs_pm;
 311
 312         dbgfs_pm->mask |= param;
 313
 314         switch (param) {
 315         case MVM_DEBUGFS_PM_KEEP_ALIVE: {
 316                 struct ieee80211_hw *hw = mvm->hw;
 317                 int dtimper = hw->conf.ps_dtim_period ?: 1;
 318                 int dtimper_msec = dtimper * vif->bss_conf.beacon_int;
 319
 320                 IWL_DEBUG_POWER(mvm, "debugfs: set keep_alive= %d sec\n", val);
 321                 if (val * MSEC_PER_SEC < 3 * dtimper_msec) {
 322                         IWL_WARN(mvm,
 323                                  "debugfs: keep alive period (%ld msec) is less than minimum required (%d msec)\n",
 324                                  val * MSEC_PER_SEC, 3 * dtimper_msec);
 325                 }
 326                 dbgfs_pm->keep_alive_seconds = val;
 327                 break;
 328         }
 329         case MVM_DEBUGFS_PM_SKIP_OVER_DTIM:
 330                 IWL_DEBUG_POWER(mvm, "skip_over_dtim %s\n",
 331                                 val ? "enabled" : "disabled");
 332                 dbgfs_pm->skip_over_dtim = val;
 333                 break;
 334         case MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS:
 335                 IWL_DEBUG_POWER(mvm, "skip_dtim_periods=%d\n", val);
 336                 dbgfs_pm->skip_dtim_periods = val;
 337                 break;
 338         case MVM_DEBUGFS_PM_RX_DATA_TIMEOUT:
 339                 IWL_DEBUG_POWER(mvm, "rx_data_timeout=%d\n", val);
 340                 dbgfs_pm->rx_data_timeout = val;
 341                 break;
 342         case MVM_DEBUGFS_PM_TX_DATA_TIMEOUT:
 343                 IWL_DEBUG_POWER(mvm, "tx_data_timeout=%d\n", val);
 344                 dbgfs_pm->tx_data_timeout = val;
 345                 break;
 346         case MVM_DEBUGFS_PM_DISABLE_POWER_OFF:
 347                 IWL_DEBUG_POWER(mvm, "disable_power_off=%d\n", val);
 348                 dbgfs_pm->disable_power_off = val;
 349                 break;
 350         case MVM_DEBUGFS_PM_LPRX_ENA:
 351                 IWL_DEBUG_POWER(mvm, "lprx %s\n", val ? "enabled" : "disabled");
 352                 dbgfs_pm->lprx_ena = val;
 353                 break;
 354         case MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD:
 355                 IWL_DEBUG_POWER(mvm, "lprx_rssi_threshold=%d\n", val);
 356                 dbgfs_pm->lprx_rssi_threshold = val;
 357                 break;
 358         case MVM_DEBUGFS_PM_SNOOZE_ENABLE:
 359                 IWL_DEBUG_POWER(mvm, "snooze_enable=%d\n", val);
 360                 dbgfs_pm->snooze_ena = val;
 361                 break;
 362         }
 363 }
 364
 365 static ssize_t iwl_dbgfs_pm_params_write(struct file *file,
 366                                          const char __user *user_buf,
 367                                          size_t count, loff_t *ppos)
 368 {
 369         struct ieee80211_vif *vif = file->private_data;
 370         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 371         struct iwl_mvm *mvm = mvmvif->dbgfs_data;
 372         enum iwl_dbgfs_pm_mask param;
 373         char buf[32] = {};
 374         int val;
 375         int ret;
 376
 377         count = min_t(size_t, count, sizeof(buf) - 1);
 378         if (copy_from_user(buf, user_buf, count))
 379                 return -EFAULT;
 380
 381         if (!strncmp("keep_alive=", buf, 11)) {
 382                 if (sscanf(buf + 11, "%d", &val) != 1)
 383                         return -EINVAL;
 384                 param = MVM_DEBUGFS_PM_KEEP_ALIVE;
 385         } else if (!strncmp("skip_over_dtim=", buf, 15)) {
 386                 if (sscanf(buf + 15, "%d", &val) != 1)
 387                         return -EINVAL;
 388                 param = MVM_DEBUGFS_PM_SKIP_OVER_DTIM;
 389         } else if (!strncmp("skip_dtim_periods=", buf, 18)) {
 390                 if (sscanf(buf + 18, "%d", &val) != 1)
 391                         return -EINVAL;
 392                 param = MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS;
 393         } else if (!strncmp("rx_data_timeout=", buf, 16)) {
 394                 if (sscanf(buf + 16, "%d", &val) != 1)
 395                         return -EINVAL;
 396                 param = MVM_DEBUGFS_PM_RX_DATA_TIMEOUT;
 397         } else if (!strncmp("tx_data_timeout=", buf, 16)) {
 398                 if (sscanf(buf + 16, "%d", &val) != 1)
 399                         return -EINVAL;
 400                 param = MVM_DEBUGFS_PM_TX_DATA_TIMEOUT;
 401         } else if (!strncmp("disable_power_off=", buf, 18) &&
 402                    !(mvm->fw->ucode_capa.flags &
 403                      IWL_UCODE_TLV_FLAGS_DEVICE_PS_CMD)) {
 404                 if (sscanf(buf + 18, "%d", &val) != 1)
 405                         return -EINVAL;
 406                 param = MVM_DEBUGFS_PM_DISABLE_POWER_OFF;
 407         } else if (!strncmp("lprx=", buf, 5)) {
 408                 if (sscanf(buf + 5, "%d", &val) != 1)
 409                         return -EINVAL;
 410                 param = MVM_DEBUGFS_PM_LPRX_ENA;
 411         } else if (!strncmp("lprx_rssi_threshold=", buf, 20)) {
 412                 if (sscanf(buf + 20, "%d", &val) != 1)
 413                         return -EINVAL;
 414                 if (val > POWER_LPRX_RSSI_THRESHOLD_MAX || val <
 415                     POWER_LPRX_RSSI_THRESHOLD_MIN)
 416                         return -EINVAL;
 417                 param = MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD;
 418         } else if (!strncmp("snooze_enable=", buf, 14)) {
 419                 if (sscanf(buf + 14, "%d", &val) != 1)
 420                         return -EINVAL;
 421                 param = MVM_DEBUGFS_PM_SNOOZE_ENABLE;
 422         } else {
 423                 return -EINVAL;
 424         }
 425
 426         mutex_lock(&mvm->mutex);
 427         iwl_dbgfs_update_pm(mvm, vif, param, val);
 428         ret = iwl_mvm_power_update_mode(mvm, vif);
 429         mutex_unlock(&mvm->mutex);
 430
 431         return ret ?: count;
 432 }
 433
 434 static ssize_t iwl_dbgfs_pm_params_read(struct file *file,
 435                                         char __user *user_buf,
 436                                         size_t count, loff_t *ppos)
 437 {
 438         struct ieee80211_vif *vif = file->private_data;
 439         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 440         struct iwl_mvm *mvm = mvmvif->dbgfs_data;
 441         char buf[512];
 442         int bufsz = sizeof(buf);
 443         int pos;
 444
 445         pos = iwl_mvm_power_dbgfs_read(mvm, vif, buf, bufsz);
 446
 447         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 448 }
 449
 450 static ssize_t iwl_dbgfs_mac_params_read(struct file *file,
 451                                          char __user *user_buf,
 452                                          size_t count, loff_t *ppos)
 453 {
 454         struct ieee80211_vif *vif = file->private_data;
 455         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 456         struct iwl_mvm *mvm = mvmvif->dbgfs_data;
 457         u8 ap_sta_id;
 458         struct ieee80211_chanctx_conf *chanctx_conf;
 459         char buf[512];
 460         int bufsz = sizeof(buf);
 461         int pos = 0;
 462         int i;
 463
 464         mutex_lock(&mvm->mutex);
 465
 466         ap_sta_id = mvmvif->ap_sta_id;
 467
 468         pos += scnprintf(buf+pos, bufsz-pos, "mac id/color: %d / %d\n",
 469                          mvmvif->id, mvmvif->color);
 470         pos += scnprintf(buf+pos, bufsz-pos, "bssid: %pM\n",
 471                          vif->bss_conf.bssid);
 472         pos += scnprintf(buf+pos, bufsz-pos, "QoS:\n");
 473         for (i = 0; i < ARRAY_SIZE(mvmvif->queue_params); i++) {
 474                 pos += scnprintf(buf+pos, bufsz-pos,
 475                                  "\t%d: txop:%d - cw_min:%d - cw_max = %d - aifs = %d upasd = %d\n",
 476                                  i, mvmvif->queue_params[i].txop,
 477                                  mvmvif->queue_params[i].cw_min,
 478                                  mvmvif->queue_params[i].cw_max,
 479                                  mvmvif->queue_params[i].aifs,
 480                                  mvmvif->queue_params[i].uapsd);
 481         }
 482
 483         if (vif->type == NL80211_IFTYPE_STATION &&
 484             ap_sta_id != IWL_MVM_STATION_COUNT) {
 485                 struct ieee80211_sta *sta;
 486                 struct iwl_mvm_sta *mvm_sta;
 487
 488                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[ap_sta_id],
 489                                                 lockdep_is_held(&mvm->mutex));
 490                 mvm_sta = (void *)sta->drv_priv;
 491                 pos += scnprintf(buf+pos, bufsz-pos,
 492                                  "ap_sta_id %d - reduced Tx power %d\n",
 493                                  ap_sta_id, mvm_sta->bt_reduced_txpower);
 494         }
 495
 496         rcu_read_lock();
 497         chanctx_conf = rcu_dereference(vif->chanctx_conf);
 498         if (chanctx_conf) {
 499                 pos += scnprintf(buf+pos, bufsz-pos,
 500                                  "idle rx chains %d, active rx chains: %d\n",
 501                                  chanctx_conf->rx_chains_static,
 502                                  chanctx_conf->rx_chains_dynamic);
 503         }
 504         rcu_read_unlock();
 505
 506         mutex_unlock(&mvm->mutex);
 507
 508         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 509 }
 510
 511 #define BT_MBOX_MSG(_notif, _num, _field)                                    \
 512         ((le32_to_cpu((_notif)->mbox_msg[(_num)]) & BT_MBOX##_num##_##_field)\
 513         >> BT_MBOX##_num##_##_field##_POS)
 514
 515
 516 #define BT_MBOX_PRINT(_num, _field, _end)                                   \
 517                         pos += scnprintf(buf + pos, bufsz - pos,            \
 518                                          "\t%s: %d%s",                      \
 519                                          #_field,                           \
 520                                          BT_MBOX_MSG(notif, _num, _field),  \
 521                                          true ? "\n" : ", ");
 522
 523 static ssize_t iwl_dbgfs_bt_notif_read(struct file *file, char __user *user_buf,
 524                                        size_t count, loff_t *ppos)
 525 {
 526         struct iwl_mvm *mvm = file->private_data;
 527         struct iwl_bt_coex_profile_notif *notif = &mvm->last_bt_notif;
 528         char *buf;
 529         int ret, pos = 0, bufsz = sizeof(char) * 1024;
 530
 531         buf = kmalloc(bufsz, GFP_KERNEL);
 532         if (!buf)
 533                 return -ENOMEM;
 534
 535         mutex_lock(&mvm->mutex);
 536
 537         pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw0:\n");
 538
 539         BT_MBOX_PRINT(0, LE_SLAVE_LAT, false);
 540         BT_MBOX_PRINT(0, LE_PROF1, false);
 541         BT_MBOX_PRINT(0, LE_PROF2, false);
 542         BT_MBOX_PRINT(0, LE_PROF_OTHER, false);
 543         BT_MBOX_PRINT(0, CHL_SEQ_N, false);
 544         BT_MBOX_PRINT(0, INBAND_S, false);
 545         BT_MBOX_PRINT(0, LE_MIN_RSSI, false);
 546         BT_MBOX_PRINT(0, LE_SCAN, false);
 547         BT_MBOX_PRINT(0, LE_ADV, false);
 548         BT_MBOX_PRINT(0, LE_MAX_TX_POWER, false);
 549         BT_MBOX_PRINT(0, OPEN_CON_1, true);
 550
 551         pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw1:\n");
 552
 553         BT_MBOX_PRINT(1, BR_MAX_TX_POWER, false);
 554         BT_MBOX_PRINT(1, IP_SR, false);
 555         BT_MBOX_PRINT(1, LE_MSTR, false);
 556         BT_MBOX_PRINT(1, AGGR_TRFC_LD, false);
 557         BT_MBOX_PRINT(1, MSG_TYPE, false);
 558         BT_MBOX_PRINT(1, SSN, true);
 559
 560         pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw2:\n");
 561
 562         BT_MBOX_PRINT(2, SNIFF_ACT, false);
 563         BT_MBOX_PRINT(2, PAG, false);
 564         BT_MBOX_PRINT(2, INQUIRY, false);
 565         BT_MBOX_PRINT(2, CONN, false);
 566         BT_MBOX_PRINT(2, SNIFF_INTERVAL, false);
 567         BT_MBOX_PRINT(2, DISC, false);
 568         BT_MBOX_PRINT(2, SCO_TX_ACT, false);
 569         BT_MBOX_PRINT(2, SCO_RX_ACT, false);
 570         BT_MBOX_PRINT(2, ESCO_RE_TX, false);
 571         BT_MBOX_PRINT(2, SCO_DURATION, true);
 572
 573         pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw3:\n");
 574
 575         BT_MBOX_PRINT(3, SCO_STATE, false);
 576         BT_MBOX_PRINT(3, SNIFF_STATE, false);
 577         BT_MBOX_PRINT(3, A2DP_STATE, false);
 578         BT_MBOX_PRINT(3, ACL_STATE, false);
 579         BT_MBOX_PRINT(3, MSTR_STATE, false);
 580         BT_MBOX_PRINT(3, OBX_STATE, false);
 581         BT_MBOX_PRINT(3, OPEN_CON_2, false);
 582         BT_MBOX_PRINT(3, TRAFFIC_LOAD, false);
 583         BT_MBOX_PRINT(3, CHL_SEQN_LSB, false);
 584         BT_MBOX_PRINT(3, INBAND_P, false);
 585         BT_MBOX_PRINT(3, MSG_TYPE_2, false);
 586         BT_MBOX_PRINT(3, SSN_2, false);
 587         BT_MBOX_PRINT(3, UPDATE_REQUEST, true);
 588
 589         pos += scnprintf(buf+pos, bufsz-pos, "bt_status = %d\n",
 590                          notif->bt_status);
 591         pos += scnprintf(buf+pos, bufsz-pos, "bt_open_conn = %d\n",
 592                          notif->bt_open_conn);
 593         pos += scnprintf(buf+pos, bufsz-pos, "bt_traffic_load = %d\n",
 594                          notif->bt_traffic_load);
 595         pos += scnprintf(buf+pos, bufsz-pos, "bt_agg_traffic_load = %d\n",
 596                          notif->bt_agg_traffic_load);
 597         pos += scnprintf(buf+pos, bufsz-pos, "bt_ci_compliance = %d\n",
 598                          notif->bt_ci_compliance);
 599         pos += scnprintf(buf+pos, bufsz-pos, "primary_ch_lut = %d\n",
 600                          le32_to_cpu(notif->primary_ch_lut));
 601         pos += scnprintf(buf+pos, bufsz-pos, "secondary_ch_lut = %d\n",
 602                          le32_to_cpu(notif->secondary_ch_lut));
 603         pos += scnprintf(buf+pos, bufsz-pos, "bt_activity_grading = %d\n",
 604                          le32_to_cpu(notif->bt_activity_grading));
 605
 606         mutex_unlock(&mvm->mutex);
 607
 608         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 609         kfree(buf);
 610
 611         return ret;
 612 }
 613 #undef BT_MBOX_PRINT
 614
 615 static ssize_t iwl_dbgfs_bt_cmd_read(struct file *file, char __user *user_buf,
 616                                      size_t count, loff_t *ppos)
 617 {
 618         struct iwl_mvm *mvm = file->private_data;
 619         struct iwl_bt_coex_ci_cmd *cmd = &mvm->last_bt_ci_cmd;
 620         char buf[256];
 621         int bufsz = sizeof(buf);
 622         int pos = 0;
 623
 624         mutex_lock(&mvm->mutex);
 625
 626         pos += scnprintf(buf+pos, bufsz-pos, "Channel inhibition CMD\n");
 627         pos += scnprintf(buf+pos, bufsz-pos,
 628                        "\tPrimary Channel Bitmap 0x%016llx Fat: %d\n",
 629                        le64_to_cpu(cmd->bt_primary_ci),
 630                        !!cmd->co_run_bw_primary);
 631         pos += scnprintf(buf+pos, bufsz-pos,
 632                        "\tSecondary Channel Bitmap 0x%016llx Fat: %d\n",
 633                        le64_to_cpu(cmd->bt_secondary_ci),
 634                        !!cmd->co_run_bw_secondary);
 635
 636         pos += scnprintf(buf+pos, bufsz-pos, "BT Configuration CMD\n");
 637         pos += scnprintf(buf+pos, bufsz-pos, "\tACK Kill Mask 0x%08x\n",
 638                          iwl_bt_ack_kill_msk[mvm->bt_kill_msk]);
 639         pos += scnprintf(buf+pos, bufsz-pos, "\tCTS Kill Mask 0x%08x\n",
 640                          iwl_bt_cts_kill_msk[mvm->bt_kill_msk]);
 641
 642         mutex_unlock(&mvm->mutex);
 643
 644         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 645 }
 646
 647 #define PRINT_STATS_LE32(_str, _val)                                    \
 648                          pos += scnprintf(buf + pos, bufsz - pos,       \
 649                                           fmt_table, _str,              \
 650                                           le32_to_cpu(_val))
 651
 652 static ssize_t iwl_dbgfs_fw_rx_stats_read(struct file *file,
 653                                           char __user *user_buf, size_t count,
 654                                           loff_t *ppos)
 655 {
 656         struct iwl_mvm *mvm = file->private_data;
 657         static const char *fmt_table = "\t%-30s %10u\n";
 658         static const char *fmt_header = "%-32s\n";
 659         int pos = 0;
 660         char *buf;
 661         int ret;
 662         /* 43 is the size of each data line, 33 is the size of each header */
 663         size_t bufsz =
 664                 ((sizeof(struct mvm_statistics_rx) / sizeof(__le32)) * 43) +
 665                 (4 * 33) + 1;
 666
 667         struct mvm_statistics_rx_phy *ofdm;
 668         struct mvm_statistics_rx_phy *cck;
 669         struct mvm_statistics_rx_non_phy *general;
 670         struct mvm_statistics_rx_ht_phy *ht;
 671
 672         buf = kzalloc(bufsz, GFP_KERNEL);
 673         if (!buf)
 674                 return -ENOMEM;
 675
 676         mutex_lock(&mvm->mutex);
 677
 678         ofdm = &mvm->rx_stats.ofdm;
 679         cck = &mvm->rx_stats.cck;
 680         general = &mvm->rx_stats.general;
 681         ht = &mvm->rx_stats.ofdm_ht;
 682
 683         pos += scnprintf(buf + pos, bufsz - pos, fmt_header,
 684                          "Statistics_Rx - OFDM");
 685         PRINT_STATS_LE32("ina_cnt", ofdm->ina_cnt);
 686         PRINT_STATS_LE32("fina_cnt", ofdm->fina_cnt);
 687         PRINT_STATS_LE32("plcp_err", ofdm->plcp_err);
 688         PRINT_STATS_LE32("crc32_err", ofdm->crc32_err);
 689         PRINT_STATS_LE32("overrun_err", ofdm->overrun_err);
 690         PRINT_STATS_LE32("early_overrun_err", ofdm->early_overrun_err);
 691         PRINT_STATS_LE32("crc32_good", ofdm->crc32_good);
 692         PRINT_STATS_LE32("false_alarm_cnt", ofdm->false_alarm_cnt);
 693         PRINT_STATS_LE32("fina_sync_err_cnt", ofdm->fina_sync_err_cnt);
 694         PRINT_STATS_LE32("sfd_timeout", ofdm->sfd_timeout);
 695         PRINT_STATS_LE32("fina_timeout", ofdm->fina_timeout);
 696         PRINT_STATS_LE32("unresponded_rts", ofdm->unresponded_rts);
 697         PRINT_STATS_LE32("rxe_frame_lmt_overrun",
 698                          ofdm->rxe_frame_limit_overrun);
 699         PRINT_STATS_LE32("sent_ack_cnt", ofdm->sent_ack_cnt);
 700         PRINT_STATS_LE32("sent_cts_cnt", ofdm->sent_cts_cnt);
 701         PRINT_STATS_LE32("sent_ba_rsp_cnt", ofdm->sent_ba_rsp_cnt);
 702         PRINT_STATS_LE32("dsp_self_kill", ofdm->dsp_self_kill);
 703         PRINT_STATS_LE32("mh_format_err", ofdm->mh_format_err);
 704         PRINT_STATS_LE32("re_acq_main_rssi_sum", ofdm->re_acq_main_rssi_sum);
 705         PRINT_STATS_LE32("reserved", ofdm->reserved);
 706
 707         pos += scnprintf(buf + pos, bufsz - pos, fmt_header,
 708                          "Statistics_Rx - CCK");
 709         PRINT_STATS_LE32("ina_cnt", cck->ina_cnt);
 710         PRINT_STATS_LE32("fina_cnt", cck->fina_cnt);
 711         PRINT_STATS_LE32("plcp_err", cck->plcp_err);
 712         PRINT_STATS_LE32("crc32_err", cck->crc32_err);
 713         PRINT_STATS_LE32("overrun_err", cck->overrun_err);
 714         PRINT_STATS_LE32("early_overrun_err", cck->early_overrun_err);
 715         PRINT_STATS_LE32("crc32_good", cck->crc32_good);
 716         PRINT_STATS_LE32("false_alarm_cnt", cck->false_alarm_cnt);
 717         PRINT_STATS_LE32("fina_sync_err_cnt", cck->fina_sync_err_cnt);
 718         PRINT_STATS_LE32("sfd_timeout", cck->sfd_timeout);
 719         PRINT_STATS_LE32("fina_timeout", cck->fina_timeout);
 720         PRINT_STATS_LE32("unresponded_rts", cck->unresponded_rts);
 721         PRINT_STATS_LE32("rxe_frame_lmt_overrun",
 722                          cck->rxe_frame_limit_overrun);
 723         PRINT_STATS_LE32("sent_ack_cnt", cck->sent_ack_cnt);
 724         PRINT_STATS_LE32("sent_cts_cnt", cck->sent_cts_cnt);
 725         PRINT_STATS_LE32("sent_ba_rsp_cnt", cck->sent_ba_rsp_cnt);
 726         PRINT_STATS_LE32("dsp_self_kill", cck->dsp_self_kill);
 727         PRINT_STATS_LE32("mh_format_err", cck->mh_format_err);
 728         PRINT_STATS_LE32("re_acq_main_rssi_sum", cck->re_acq_main_rssi_sum);
 729         PRINT_STATS_LE32("reserved", cck->reserved);
 730
 731         pos += scnprintf(buf + pos, bufsz - pos, fmt_header,
 732                          "Statistics_Rx - GENERAL");
 733         PRINT_STATS_LE32("bogus_cts", general->bogus_cts);
 734         PRINT_STATS_LE32("bogus_ack", general->bogus_ack);
 735         PRINT_STATS_LE32("non_bssid_frames", general->non_bssid_frames);
 736         PRINT_STATS_LE32("filtered_frames", general->filtered_frames);
 737         PRINT_STATS_LE32("non_channel_beacons", general->non_channel_beacons);
 738         PRINT_STATS_LE32("channel_beacons", general->channel_beacons);
 739         PRINT_STATS_LE32("num_missed_bcon", general->num_missed_bcon);
 740         PRINT_STATS_LE32("adc_rx_saturation_time",
 741                          general->adc_rx_saturation_time);
 742         PRINT_STATS_LE32("ina_detection_search_time",
 743                          general->ina_detection_search_time);
 744         PRINT_STATS_LE32("beacon_silence_rssi_a",
 745                          general->beacon_silence_rssi_a);
 746         PRINT_STATS_LE32("beacon_silence_rssi_b",
 747                          general->beacon_silence_rssi_b);
 748         PRINT_STATS_LE32("beacon_silence_rssi_c",
 749                          general->beacon_silence_rssi_c);
 750         PRINT_STATS_LE32("interference_data_flag",
 751                          general->interference_data_flag);
 752         PRINT_STATS_LE32("channel_load", general->channel_load);
 753         PRINT_STATS_LE32("dsp_false_alarms", general->dsp_false_alarms);
 754         PRINT_STATS_LE32("beacon_rssi_a", general->beacon_rssi_a);
 755         PRINT_STATS_LE32("beacon_rssi_b", general->beacon_rssi_b);
 756         PRINT_STATS_LE32("beacon_rssi_c", general->beacon_rssi_c);
 757         PRINT_STATS_LE32("beacon_energy_a", general->beacon_energy_a);
 758         PRINT_STATS_LE32("beacon_energy_b", general->beacon_energy_b);
 759         PRINT_STATS_LE32("beacon_energy_c", general->beacon_energy_c);
 760         PRINT_STATS_LE32("num_bt_kills", general->num_bt_kills);
 761         PRINT_STATS_LE32("mac_id", general->mac_id);
 762         PRINT_STATS_LE32("directed_data_mpdu", general->directed_data_mpdu);
 763
 764         pos += scnprintf(buf + pos, bufsz - pos, fmt_header,
 765                          "Statistics_Rx - HT");
 766         PRINT_STATS_LE32("plcp_err", ht->plcp_err);
 767         PRINT_STATS_LE32("overrun_err", ht->overrun_err);
 768         PRINT_STATS_LE32("early_overrun_err", ht->early_overrun_err);
 769         PRINT_STATS_LE32("crc32_good", ht->crc32_good);
 770         PRINT_STATS_LE32("crc32_err", ht->crc32_err);
 771         PRINT_STATS_LE32("mh_format_err", ht->mh_format_err);
 772         PRINT_STATS_LE32("agg_crc32_good", ht->agg_crc32_good);
 773         PRINT_STATS_LE32("agg_mpdu_cnt", ht->agg_mpdu_cnt);
 774         PRINT_STATS_LE32("agg_cnt", ht->agg_cnt);
 775         PRINT_STATS_LE32("unsupport_mcs", ht->unsupport_mcs);
 776
 777         mutex_unlock(&mvm->mutex);
 778
 779         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 780         kfree(buf);
 781
 782         return ret;
 783 }
 784 #undef PRINT_STAT_LE32
 785
 786 static ssize_t iwl_dbgfs_fw_restart_write(struct file *file,
 787                                           const char __user *user_buf,
 788                                           size_t count, loff_t *ppos)
 789 {
 790         struct iwl_mvm *mvm = file->private_data;
 791         int ret;
 792
 793         mutex_lock(&mvm->mutex);
 794
 795         /* allow one more restart that we're provoking here */
 796         if (mvm->restart_fw >= 0)
 797                 mvm->restart_fw++;
 798
 799         /* take the return value to make compiler happy - it will fail anyway */
 800         ret = iwl_mvm_send_cmd_pdu(mvm, REPLY_ERROR, CMD_SYNC, 0, NULL);
 801
 802         mutex_unlock(&mvm->mutex);
 803
 804         return count;
 805 }
 806
 807 static ssize_t
 808 iwl_dbgfs_scan_ant_rxchain_read(struct file *file,
 809                                 char __user *user_buf,
 810                                 size_t count, loff_t *ppos)
 811 {
 812         struct iwl_mvm *mvm = file->private_data;
 813         int pos = 0;
 814         char buf[32];
 815         const size_t bufsz = sizeof(buf);
 816
 817         /* print which antennas were set for the scan command by the user */
 818         pos += scnprintf(buf + pos, bufsz - pos, "Antennas for scan: ");
 819         if (mvm->scan_rx_ant & ANT_A)
 820                 pos += scnprintf(buf + pos, bufsz - pos, "A");
 821         if (mvm->scan_rx_ant & ANT_B)
 822                 pos += scnprintf(buf + pos, bufsz - pos, "B");
 823         if (mvm->scan_rx_ant & ANT_C)
 824                 pos += scnprintf(buf + pos, bufsz - pos, "C");
 825         pos += scnprintf(buf + pos, bufsz - pos, " (%hhx)\n", mvm->scan_rx_ant);
 826
 827         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 828 }
 829
 830 static ssize_t
 831 iwl_dbgfs_scan_ant_rxchain_write(struct file *file,
 832                                  const char __user *user_buf,
 833                                  size_t count, loff_t *ppos)
 834 {
 835         struct iwl_mvm *mvm = file->private_data;
 836         char buf[8];
 837         int buf_size;
 838         u8 scan_rx_ant;
 839
 840         memset(buf, 0, sizeof(buf));
 841         buf_size = min(count, sizeof(buf) - 1);
 842
 843         /* get the argument from the user and check if it is valid */
 844         if (copy_from_user(buf, user_buf, buf_size))
 845                 return -EFAULT;
 846         if (sscanf(buf, "%hhx", &scan_rx_ant) != 1)
 847                 return -EINVAL;
 848         if (scan_rx_ant > ANT_ABC)
 849                 return -EINVAL;
 850         if (scan_rx_ant & ~iwl_fw_valid_rx_ant(mvm->fw))
 851                 return -EINVAL;
 852
 853         /* change the rx antennas for scan command */
 854         mvm->scan_rx_ant = scan_rx_ant;
 855
 856         return count;
 857 }
 858
 859
 860 static void iwl_dbgfs_update_bf(struct ieee80211_vif *vif,
 861                                 enum iwl_dbgfs_bf_mask param, int value)
 862 {
 863         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 864         struct iwl_dbgfs_bf *dbgfs_bf = &mvmvif->dbgfs_bf;
 865
 866         dbgfs_bf->mask |= param;
 867
 868         switch (param) {
 869         case MVM_DEBUGFS_BF_ENERGY_DELTA:
 870                 dbgfs_bf->bf_energy_delta = value;
 871                 break;
 872         case MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA:
 873                 dbgfs_bf->bf_roaming_energy_delta = value;
 874                 break;
 875         case MVM_DEBUGFS_BF_ROAMING_STATE:
 876                 dbgfs_bf->bf_roaming_state = value;
 877                 break;
 878         case MVM_DEBUGFS_BF_TEMP_THRESHOLD:
 879                 dbgfs_bf->bf_temp_threshold = value;
 880                 break;
 881         case MVM_DEBUGFS_BF_TEMP_FAST_FILTER:
 882                 dbgfs_bf->bf_temp_fast_filter = value;
 883                 break;
 884         case MVM_DEBUGFS_BF_TEMP_SLOW_FILTER:
 885                 dbgfs_bf->bf_temp_slow_filter = value;
 886                 break;
 887         case MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER:
 888                 dbgfs_bf->bf_enable_beacon_filter = value;
 889                 break;
 890         case MVM_DEBUGFS_BF_DEBUG_FLAG:
 891                 dbgfs_bf->bf_debug_flag = value;
 892                 break;
 893         case MVM_DEBUGFS_BF_ESCAPE_TIMER:
 894                 dbgfs_bf->bf_escape_timer = value;
 895                 break;
 896         case MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT:
 897                 dbgfs_bf->ba_enable_beacon_abort = value;
 898                 break;
 899         case MVM_DEBUGFS_BA_ESCAPE_TIMER:
 900                 dbgfs_bf->ba_escape_timer = value;
 901                 break;
 902         }
 903 }
 904
 905 static ssize_t iwl_dbgfs_bf_params_write(struct file *file,
 906                                          const char __user *user_buf,
 907                                          size_t count, loff_t *ppos)
 908 {
 909         struct ieee80211_vif *vif = file->private_data;
 910         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 911         struct iwl_mvm *mvm = mvmvif->dbgfs_data;
 912         enum iwl_dbgfs_bf_mask param;
 913         char buf[256];
 914         int buf_size;
 915         int value;
 916         int ret = 0;
 917
 918         memset(buf, 0, sizeof(buf));
 919         buf_size = min(count, sizeof(buf) - 1);
 920         if (copy_from_user(buf, user_buf, buf_size))
 921                 return -EFAULT;
 922
 923         if (!strncmp("bf_energy_delta=", buf, 16)) {
 924                 if (sscanf(buf+16, "%d", &value) != 1)
 925                         return -EINVAL;
 926                 if (value < IWL_BF_ENERGY_DELTA_MIN ||
 927                     value > IWL_BF_ENERGY_DELTA_MAX)
 928                         return -EINVAL;
 929                 param = MVM_DEBUGFS_BF_ENERGY_DELTA;
 930         } else if (!strncmp("bf_roaming_energy_delta=", buf, 24)) {
 931                 if (sscanf(buf+24, "%d", &value) != 1)
 932                         return -EINVAL;
 933                 if (value < IWL_BF_ROAMING_ENERGY_DELTA_MIN ||
 934                     value > IWL_BF_ROAMING_ENERGY_DELTA_MAX)
 935                         return -EINVAL;
 936                 param = MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA;
 937         } else if (!strncmp("bf_roaming_state=", buf, 17)) {
 938                 if (sscanf(buf+17, "%d", &value) != 1)
 939                         return -EINVAL;
 940                 if (value < IWL_BF_ROAMING_STATE_MIN ||
 941                     value > IWL_BF_ROAMING_STATE_MAX)
 942                         return -EINVAL;
 943                 param = MVM_DEBUGFS_BF_ROAMING_STATE;
 944         } else if (!strncmp("bf_temp_threshold=", buf, 18)) {
 945                 if (sscanf(buf+18, "%d", &value) != 1)
 946                         return -EINVAL;
 947                 if (value < IWL_BF_TEMP_THRESHOLD_MIN ||
 948                     value > IWL_BF_TEMP_THRESHOLD_MAX)
 949                         return -EINVAL;
 950                 param = MVM_DEBUGFS_BF_TEMP_THRESHOLD;
 951         } else if (!strncmp("bf_temp_fast_filter=", buf, 20)) {
 952                 if (sscanf(buf+20, "%d", &value) != 1)
 953                         return -EINVAL;
 954                 if (value < IWL_BF_TEMP_FAST_FILTER_MIN ||
 955                     value > IWL_BF_TEMP_FAST_FILTER_MAX)
 956                         return -EINVAL;
 957                 param = MVM_DEBUGFS_BF_TEMP_FAST_FILTER;
 958         } else if (!strncmp("bf_temp_slow_filter=", buf, 20)) {
 959                 if (sscanf(buf+20, "%d", &value) != 1)
 960                         return -EINVAL;
 961                 if (value < IWL_BF_TEMP_SLOW_FILTER_MIN ||
 962                     value > IWL_BF_TEMP_SLOW_FILTER_MAX)
 963                         return -EINVAL;
 964                 param = MVM_DEBUGFS_BF_TEMP_SLOW_FILTER;
 965         } else if (!strncmp("bf_enable_beacon_filter=", buf, 24)) {
 966                 if (sscanf(buf+24, "%d", &value) != 1)
 967                         return -EINVAL;
 968                 if (value < 0 || value > 1)
 969                         return -EINVAL;
 970                 param = MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER;
 971         } else if (!strncmp("bf_debug_flag=", buf, 14)) {
 972                 if (sscanf(buf+14, "%d", &value) != 1)
 973                         return -EINVAL;
 974                 if (value < 0 || value > 1)
 975                         return -EINVAL;
 976                 param = MVM_DEBUGFS_BF_DEBUG_FLAG;
 977         } else if (!strncmp("bf_escape_timer=", buf, 16)) {
 978                 if (sscanf(buf+16, "%d", &value) != 1)
 979                         return -EINVAL;
 980                 if (value < IWL_BF_ESCAPE_TIMER_MIN ||
 981                     value > IWL_BF_ESCAPE_TIMER_MAX)
 982                         return -EINVAL;
 983                 param = MVM_DEBUGFS_BF_ESCAPE_TIMER;
 984         } else if (!strncmp("ba_escape_timer=", buf, 16)) {
 985                 if (sscanf(buf+16, "%d", &value) != 1)
 986                         return -EINVAL;
 987                 if (value < IWL_BA_ESCAPE_TIMER_MIN ||
 988                     value > IWL_BA_ESCAPE_TIMER_MAX)
 989                         return -EINVAL;
 990                 param = MVM_DEBUGFS_BA_ESCAPE_TIMER;
 991         } else if (!strncmp("ba_enable_beacon_abort=", buf, 23)) {
 992                 if (sscanf(buf+23, "%d", &value) != 1)
 993                         return -EINVAL;
 994                 if (value < 0 || value > 1)
 995                         return -EINVAL;
 996                 param = MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT;
 997         } else {
 998                 return -EINVAL;
 999         }
1000
1001         mutex_lock(&mvm->mutex);
1002         iwl_dbgfs_update_bf(vif, param, value);
1003         if (param == MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER && !value) {
1004                 ret = iwl_mvm_disable_beacon_filter(mvm, vif);
1005         } else {
1006                 ret = iwl_mvm_enable_beacon_filter(mvm, vif);
1007         }
1008         mutex_unlock(&mvm->mutex);
1009
1010         return ret ?: count;
1011 }
1012
1013 static ssize_t iwl_dbgfs_bf_params_read(struct file *file,
1014                                         char __user *user_buf,
1015                                         size_t count, loff_t *ppos)
1016 {
1017         struct ieee80211_vif *vif = file->private_data;
1018         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1019         char buf[256];
1020         int pos = 0;
1021         const size_t bufsz = sizeof(buf);
1022         struct iwl_beacon_filter_cmd cmd = {
1023                 IWL_BF_CMD_CONFIG_DEFAULTS,
1024                 .bf_enable_beacon_filter =
1025                         cpu_to_le32(IWL_BF_ENABLE_BEACON_FILTER_DEFAULT),
1026                 .ba_enable_beacon_abort =
1027                         cpu_to_le32(IWL_BA_ENABLE_BEACON_ABORT_DEFAULT),
1028         };
1029
1030         iwl_mvm_beacon_filter_debugfs_parameters(vif, &cmd);
1031         if (mvmvif->bf_data.bf_enabled)
1032                 cmd.bf_enable_beacon_filter = cpu_to_le32(1);
1033         else
1034                 cmd.bf_enable_beacon_filter = 0;
1035
1036         pos += scnprintf(buf+pos, bufsz-pos, "bf_energy_delta = %d\n",
1037                          le32_to_cpu(cmd.bf_energy_delta));
1038         pos += scnprintf(buf+pos, bufsz-pos, "bf_roaming_energy_delta = %d\n",
1039                          le32_to_cpu(cmd.bf_roaming_energy_delta));
1040         pos += scnprintf(buf+pos, bufsz-pos, "bf_roaming_state = %d\n",
1041                          le32_to_cpu(cmd.bf_roaming_state));
1042         pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_threshold = %d\n",
1043                          le32_to_cpu(cmd.bf_temp_threshold));
1044         pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_fast_filter = %d\n",
1045                          le32_to_cpu(cmd.bf_temp_fast_filter));
1046         pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_slow_filter = %d\n",
1047                          le32_to_cpu(cmd.bf_temp_slow_filter));
1048         pos += scnprintf(buf+pos, bufsz-pos, "bf_enable_beacon_filter = %d\n",
1049                          le32_to_cpu(cmd.bf_enable_beacon_filter));
1050         pos += scnprintf(buf+pos, bufsz-pos, "bf_debug_flag = %d\n",
1051                          le32_to_cpu(cmd.bf_debug_flag));
1052         pos += scnprintf(buf+pos, bufsz-pos, "bf_escape_timer = %d\n",
1053                          le32_to_cpu(cmd.bf_escape_timer));
1054         pos += scnprintf(buf+pos, bufsz-pos, "ba_escape_timer = %d\n",
1055                          le32_to_cpu(cmd.ba_escape_timer));
1056         pos += scnprintf(buf+pos, bufsz-pos, "ba_enable_beacon_abort = %d\n",
1057                          le32_to_cpu(cmd.ba_enable_beacon_abort));
1058
1059         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1060 }
1061
1062 #ifdef CONFIG_PM_SLEEP
1063 static ssize_t iwl_dbgfs_d3_sram_write(struct file *file,
1064                                        const char __user *user_buf,
1065                                        size_t count, loff_t *ppos)
1066 {
1067         struct iwl_mvm *mvm = file->private_data;
1068         char buf[8] = {};
1069         int store;
1070
1071         count = min_t(size_t, count, sizeof(buf) - 1);
1072         if (copy_from_user(buf, user_buf, count))
1073                 return -EFAULT;
1074
1075         if (sscanf(buf, "%d", &store) != 1)
1076                 return -EINVAL;
1077
1078         mvm->store_d3_resume_sram = store;
1079
1080         return count;
1081 }
1082
1083 static ssize_t iwl_dbgfs_d3_sram_read(struct file *file, char __user *user_buf,
1084                                       size_t count, loff_t *ppos)
1085 {
1086         struct iwl_mvm *mvm = file->private_data;
1087         const struct fw_img *img;
1088         int ofs, len, pos = 0;
1089         size_t bufsz, ret;
1090         char *buf;
1091         u8 *ptr = mvm->d3_resume_sram;
1092
1093         img = &mvm->fw->img[IWL_UCODE_WOWLAN];
1094         len = img->sec[IWL_UCODE_SECTION_DATA].len;
1095
1096         bufsz = len * 4 + 256;
1097         buf = kzalloc(bufsz, GFP_KERNEL);
1098         if (!buf)
1099                 return -ENOMEM;
1100
1101         pos += scnprintf(buf, bufsz, "D3 SRAM capture: %sabled\n",
1102                          mvm->store_d3_resume_sram ? "en" : "dis");
1103
1104         if (ptr) {
1105                 for (ofs = 0; ofs < len; ofs += 16) {
1106                         pos += scnprintf(buf + pos, bufsz - pos,
1107                                          "0x%.4x ", ofs);
1108                         hex_dump_to_buffer(ptr + ofs, 16, 16, 1, buf + pos,
1109                                            bufsz - pos, false);
1110                         pos += strlen(buf + pos);
1111                         if (bufsz - pos > 0)
1112                                 buf[pos++] = '\n';
1113                 }
1114         } else {
1115                 pos += scnprintf(buf + pos, bufsz - pos,
1116                                  "(no data captured)\n");
1117         }
1118
1119         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1120
1121         kfree(buf);
1122
1123         return ret;
1124 }
1125 #endif
1126
1127 #define MVM_DEBUGFS_READ_FILE_OPS(name)                                 \
1128 static const struct file_operations iwl_dbgfs_##name##_ops = {  \
1129         .read = iwl_dbgfs_##name##_read,                                \
1130         .open = simple_open,                                            \
1131         .llseek = generic_file_llseek,                                  \
1132 }
1133
1134 #define MVM_DEBUGFS_READ_WRITE_FILE_OPS(name)                           \
1135 static const struct file_operations iwl_dbgfs_##name##_ops = {  \
1136         .write = iwl_dbgfs_##name##_write,                              \
1137         .read = iwl_dbgfs_##name##_read,                                \
1138         .open = simple_open,                                            \
1139         .llseek = generic_file_llseek,                                  \
1140 };
1141
1142 #define MVM_DEBUGFS_WRITE_FILE_OPS(name)                                \
1143 static const struct file_operations iwl_dbgfs_##name##_ops = {  \
1144         .write = iwl_dbgfs_##name##_write,                              \
1145         .open = simple_open,                                            \
1146         .llseek = generic_file_llseek,                                  \
1147 };
1148
1149 #define MVM_DEBUGFS_ADD_FILE(name, parent, mode) do {                   \
1150                 if (!debugfs_create_file(#name, mode, parent, mvm,      \
1151                                          &iwl_dbgfs_##name##_ops))      \
1152                         goto err;                                       \
1153         } while (0)
1154
1155 #define MVM_DEBUGFS_ADD_FILE_VIF(name, parent, mode) do {               \
1156                 if (!debugfs_create_file(#name, mode, parent, vif,      \
1157                                          &iwl_dbgfs_##name##_ops))      \
1158                         goto err;                                       \
1159         } while (0)
1160
1161 /* Device wide debugfs entries */
1162 MVM_DEBUGFS_WRITE_FILE_OPS(tx_flush);
1163 MVM_DEBUGFS_WRITE_FILE_OPS(sta_drain);
1164 MVM_DEBUGFS_READ_WRITE_FILE_OPS(sram);
1165 MVM_DEBUGFS_READ_FILE_OPS(stations);
1166 MVM_DEBUGFS_READ_FILE_OPS(bt_notif);
1167 MVM_DEBUGFS_READ_FILE_OPS(bt_cmd);
1168 MVM_DEBUGFS_READ_WRITE_FILE_OPS(disable_power_off);
1169 MVM_DEBUGFS_READ_FILE_OPS(fw_rx_stats);
1170 MVM_DEBUGFS_WRITE_FILE_OPS(fw_restart);
1171 MVM_DEBUGFS_READ_WRITE_FILE_OPS(scan_ant_rxchain);
1172
1173 #ifdef CONFIG_PM_SLEEP
1174 MVM_DEBUGFS_READ_WRITE_FILE_OPS(d3_sram);
1175 #endif
1176
1177 /* Interface specific debugfs entries */
1178 MVM_DEBUGFS_READ_FILE_OPS(mac_params);
1179 MVM_DEBUGFS_READ_WRITE_FILE_OPS(pm_params);
1180 MVM_DEBUGFS_READ_WRITE_FILE_OPS(bf_params);
1181
1182 int iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir)
1183 {
1184         char buf[100];
1185
1186         mvm->debugfs_dir = dbgfs_dir;
1187
1188         MVM_DEBUGFS_ADD_FILE(tx_flush, mvm->debugfs_dir, S_IWUSR);
1189         MVM_DEBUGFS_ADD_FILE(sta_drain, mvm->debugfs_dir, S_IWUSR);
1190         MVM_DEBUGFS_ADD_FILE(sram, mvm->debugfs_dir, S_IWUSR | S_IRUSR);
1191         MVM_DEBUGFS_ADD_FILE(stations, dbgfs_dir, S_IRUSR);
1192         MVM_DEBUGFS_ADD_FILE(bt_notif, dbgfs_dir, S_IRUSR);
1193         MVM_DEBUGFS_ADD_FILE(bt_cmd, dbgfs_dir, S_IRUSR);
1194         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DEVICE_PS_CMD)
1195                 MVM_DEBUGFS_ADD_FILE(disable_power_off, mvm->debugfs_dir,
1196                                      S_IRUSR | S_IWUSR);
1197         MVM_DEBUGFS_ADD_FILE(fw_rx_stats, mvm->debugfs_dir, S_IRUSR);
1198         MVM_DEBUGFS_ADD_FILE(fw_restart, mvm->debugfs_dir, S_IWUSR);
1199         MVM_DEBUGFS_ADD_FILE(scan_ant_rxchain, mvm->debugfs_dir,
1200                              S_IWUSR | S_IRUSR);
1201 #ifdef CONFIG_PM_SLEEP
1202         MVM_DEBUGFS_ADD_FILE(d3_sram, mvm->debugfs_dir, S_IRUSR | S_IWUSR);
1203         MVM_DEBUGFS_ADD_FILE(d3_test, mvm->debugfs_dir, S_IRUSR);
1204         if (!debugfs_create_bool("d3_wake_sysassert", S_IRUSR | S_IWUSR,
1205                                  mvm->debugfs_dir, &mvm->d3_wake_sysassert))
1206                 goto err;
1207 #endif
1208
1209         /*
1210          * Create a symlink with mac80211. It will be removed when mac80211
1211          * exists (before the opmode exists which removes the target.)
1212          */
1213         snprintf(buf, 100, "../../%s/%s",
1214                  dbgfs_dir->d_parent->d_parent->d_name.name,
1215                  dbgfs_dir->d_parent->d_name.name);
1216         if (!debugfs_create_symlink("iwlwifi", mvm->hw->wiphy->debugfsdir, buf))
1217                 goto err;
1218
1219         return 0;
1220 err:
1221         IWL_ERR(mvm, "Can't create the mvm debugfs directory\n");
1222         return -ENOMEM;
1223 }
1224
1225 void iwl_mvm_vif_dbgfs_register(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1226 {
1227         struct dentry *dbgfs_dir = vif->debugfs_dir;
1228         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1229         char buf[100];
1230
1231         /*
1232          * Check if debugfs directory already exist before creating it.
1233          * This may happen when, for example, resetting hw or suspend-resume
1234          */
1235         if (!dbgfs_dir || mvmvif->dbgfs_dir)
1236                 return;
1237
1238         mvmvif->dbgfs_dir = debugfs_create_dir("iwlmvm", dbgfs_dir);
1239         mvmvif->dbgfs_data = mvm;
1240
1241         if (!mvmvif->dbgfs_dir) {
1242                 IWL_ERR(mvm, "Failed to create debugfs directory under %s\n",
1243                         dbgfs_dir->d_name.name);
1244                 return;
1245         }
1246
1247         if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM &&
1248             vif->type == NL80211_IFTYPE_STATION && !vif->p2p)
1249                 MVM_DEBUGFS_ADD_FILE_VIF(pm_params, mvmvif->dbgfs_dir, S_IWUSR |
1250                                          S_IRUSR);
1251
1252         MVM_DEBUGFS_ADD_FILE_VIF(mac_params, mvmvif->dbgfs_dir,
1253                                  S_IRUSR);
1254
1255         if (vif->type == NL80211_IFTYPE_STATION && !vif->p2p &&
1256             mvmvif == mvm->bf_allowed_vif)
1257                 MVM_DEBUGFS_ADD_FILE_VIF(bf_params, mvmvif->dbgfs_dir,
1258                                          S_IRUSR | S_IWUSR);
1259
1260         /*
1261          * Create symlink for convenience pointing to interface specific
1262          * debugfs entries for the driver. For example, under
1263          * /sys/kernel/debug/iwlwifi/0000\:02\:00.0/iwlmvm/
1264          * find
1265          * netdev:wlan0 -> ../../../ieee80211/phy0/netdev:wlan0/iwlmvm/
1266          */
1267         snprintf(buf, 100, "../../../%s/%s/%s/%s",
1268                  dbgfs_dir->d_parent->d_parent->d_name.name,
1269                  dbgfs_dir->d_parent->d_name.name,
1270                  dbgfs_dir->d_name.name,
1271                  mvmvif->dbgfs_dir->d_name.name);
1272
1273         mvmvif->dbgfs_slink = debugfs_create_symlink(dbgfs_dir->d_name.name,
1274                                                      mvm->debugfs_dir, buf);
1275         if (!mvmvif->dbgfs_slink)
1276                 IWL_ERR(mvm, "Can't create debugfs symbolic link under %s\n",
1277                         dbgfs_dir->d_name.name);
1278         return;
1279 err:
1280         IWL_ERR(mvm, "Can't create debugfs entity\n");
1281 }
1282
1283 void iwl_mvm_vif_dbgfs_clean(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1284 {
1285         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1286
1287         debugfs_remove(mvmvif->dbgfs_slink);
1288         mvmvif->dbgfs_slink = NULL;
1289
1290         debugfs_remove_recursive(mvmvif->dbgfs_dir);
1291         mvmvif->dbgfs_dir = NULL;
1292 }