drivers/net/wireless/intel/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 - 2014 Intel Corporation. All rights reserved.
   9  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  10  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  11  * Copyright(c) 2018        Intel Corporation
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of version 2 of the GNU General Public License as
  15  * published by the Free Software Foundation.
  16  *
  17  * This program is distributed in the hope that it will be useful, but
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  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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  31  *  Intel Linux Wireless <linuxwifi@intel.com>
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  35  *
  36  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  37  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  38  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  39  * Copyright(c) 2018        Intel Corporation
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  43  * modification, are permitted provided that the following conditions
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  51  *    distribution.
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  53  *    contributors may be used to endorse or promote products derived
  54  *    from this software without specific prior written permission.
  55  *
  56  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  57  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  58  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  59  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  60  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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  66  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  67  *
  68  *****************************************************************************/
  69 #include <linux/vmalloc.h>
  70 #include <linux/ieee80211.h>
  71 #include <linux/netdevice.h>
  72
  73 #include "mvm.h"
  74 #include "sta.h"
  75 #include "iwl-io.h"
  76 #include "debugfs.h"
  77 #include "fw/error-dump.h"
  78
  79 static ssize_t iwl_dbgfs_ctdp_budget_read(struct file *file,
  80                                           char __user *user_buf,
  81                                           size_t count, loff_t *ppos)
  82 {
  83         struct iwl_mvm *mvm = file->private_data;
  84         char buf[16];
  85         int pos, budget;
  86
  87         if (!iwl_mvm_is_ctdp_supported(mvm))
  88                 return -EOPNOTSUPP;
  89
  90         if (!iwl_mvm_firmware_running(mvm) ||
  91             mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR)
  92                 return -EIO;
  93
  94         mutex_lock(&mvm->mutex);
  95         budget = iwl_mvm_ctdp_command(mvm, CTDP_CMD_OPERATION_REPORT, 0);
  96         mutex_unlock(&mvm->mutex);
  97
  98         if (budget < 0)
  99                 return budget;
 100
 101         pos = scnprintf(buf, sizeof(buf), "%d\n", budget);
 102
 103         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 104 }
 105
 106 static ssize_t iwl_dbgfs_stop_ctdp_write(struct iwl_mvm *mvm, char *buf,
 107                                          size_t count, loff_t *ppos)
 108 {
 109         int ret;
 110
 111         if (!iwl_mvm_is_ctdp_supported(mvm))
 112                 return -EOPNOTSUPP;
 113
 114         if (!iwl_mvm_firmware_running(mvm) ||
 115             mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR)
 116                 return -EIO;
 117
 118         mutex_lock(&mvm->mutex);
 119         ret = iwl_mvm_ctdp_command(mvm, CTDP_CMD_OPERATION_STOP, 0);
 120         mutex_unlock(&mvm->mutex);
 121
 122         return ret ?: count;
 123 }
 124
 125 static ssize_t iwl_dbgfs_force_ctkill_write(struct iwl_mvm *mvm, char *buf,
 126                                             size_t count, loff_t *ppos)
 127 {
 128         if (!iwl_mvm_firmware_running(mvm) ||
 129             mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR)
 130                 return -EIO;
 131
 132         iwl_mvm_enter_ctkill(mvm);
 133
 134         return count;
 135 }
 136
 137 static ssize_t iwl_dbgfs_tx_flush_write(struct iwl_mvm *mvm, char *buf,
 138                                         size_t count, loff_t *ppos)
 139 {
 140         int ret;
 141         u32 flush_arg;
 142
 143         if (!iwl_mvm_firmware_running(mvm) ||
 144             mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR)
 145                 return -EIO;
 146
 147         if (kstrtou32(buf, 0, &flush_arg))
 148                 return -EINVAL;
 149
 150         if (iwl_mvm_has_new_tx_api(mvm)) {
 151                 IWL_DEBUG_TX_QUEUES(mvm,
 152                                     "FLUSHING all tids queues on sta_id = %d\n",
 153                                     flush_arg);
 154                 mutex_lock(&mvm->mutex);
 155                 ret = iwl_mvm_flush_sta_tids(mvm, flush_arg, 0xFF, 0) ? : count;
 156                 mutex_unlock(&mvm->mutex);
 157                 return ret;
 158         }
 159
 160         IWL_DEBUG_TX_QUEUES(mvm, "FLUSHING queues mask to flush = 0x%x\n",
 161                             flush_arg);
 162
 163         mutex_lock(&mvm->mutex);
 164         ret =  iwl_mvm_flush_tx_path(mvm, flush_arg, 0) ? : count;
 165         mutex_unlock(&mvm->mutex);
 166
 167         return ret;
 168 }
 169
 170 static ssize_t iwl_dbgfs_sta_drain_write(struct iwl_mvm *mvm, char *buf,
 171                                          size_t count, loff_t *ppos)
 172 {
 173         struct iwl_mvm_sta *mvmsta;
 174         int sta_id, drain, ret;
 175
 176         if (!iwl_mvm_firmware_running(mvm) ||
 177             mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR)
 178                 return -EIO;
 179
 180         if (sscanf(buf, "%d %d", &sta_id, &drain) != 2)
 181                 return -EINVAL;
 182         if (sta_id < 0 || sta_id >= IWL_MVM_STATION_COUNT)
 183                 return -EINVAL;
 184         if (drain < 0 || drain > 1)
 185                 return -EINVAL;
 186
 187         mutex_lock(&mvm->mutex);
 188
 189         mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id);
 190
 191         if (!mvmsta)
 192                 ret = -ENOENT;
 193         else
 194                 ret = iwl_mvm_drain_sta(mvm, mvmsta, drain) ? : count;
 195
 196         mutex_unlock(&mvm->mutex);
 197
 198         return ret;
 199 }
 200
 201 static ssize_t iwl_dbgfs_sram_read(struct file *file, char __user *user_buf,
 202                                    size_t count, loff_t *ppos)
 203 {
 204         struct iwl_mvm *mvm = file->private_data;
 205         const struct fw_img *img;
 206         unsigned int ofs, len;
 207         size_t ret;
 208         u8 *ptr;
 209
 210         if (!iwl_mvm_firmware_running(mvm))
 211                 return -EINVAL;
 212
 213         /* default is to dump the entire data segment */
 214         img = &mvm->fw->img[mvm->fwrt.cur_fw_img];
 215         ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
 216         len = img->sec[IWL_UCODE_SECTION_DATA].len;
 217
 218         if (mvm->dbgfs_sram_len) {
 219                 ofs = mvm->dbgfs_sram_offset;
 220                 len = mvm->dbgfs_sram_len;
 221         }
 222
 223         ptr = kzalloc(len, GFP_KERNEL);
 224         if (!ptr)
 225                 return -ENOMEM;
 226
 227         iwl_trans_read_mem_bytes(mvm->trans, ofs, ptr, len);
 228
 229         ret = simple_read_from_buffer(user_buf, count, ppos, ptr, len);
 230
 231         kfree(ptr);
 232
 233         return ret;
 234 }
 235
 236 static ssize_t iwl_dbgfs_sram_write(struct iwl_mvm *mvm, char *buf,
 237                                     size_t count, loff_t *ppos)
 238 {
 239         const struct fw_img *img;
 240         u32 offset, len;
 241         u32 img_offset, img_len;
 242
 243         if (!iwl_mvm_firmware_running(mvm))
 244                 return -EINVAL;
 245
 246         img = &mvm->fw->img[mvm->fwrt.cur_fw_img];
 247         img_offset = img->sec[IWL_UCODE_SECTION_DATA].offset;
 248         img_len = img->sec[IWL_UCODE_SECTION_DATA].len;
 249
 250         if (sscanf(buf, "%x,%x", &offset, &len) == 2) {
 251                 if ((offset & 0x3) || (len & 0x3))
 252                         return -EINVAL;
 253
 254                 if (offset + len > img_offset + img_len)
 255                         return -EINVAL;
 256
 257                 mvm->dbgfs_sram_offset = offset;
 258                 mvm->dbgfs_sram_len = len;
 259         } else {
 260                 mvm->dbgfs_sram_offset = 0;
 261                 mvm->dbgfs_sram_len = 0;
 262         }
 263
 264         return count;
 265 }
 266
 267 static ssize_t iwl_dbgfs_set_nic_temperature_read(struct file *file,
 268                                                   char __user *user_buf,
 269                                                   size_t count, loff_t *ppos)
 270 {
 271         struct iwl_mvm *mvm = file->private_data;
 272         char buf[16];
 273         int pos;
 274
 275         if (!mvm->temperature_test)
 276                 pos = scnprintf(buf , sizeof(buf), "disabled\n");
 277         else
 278                 pos = scnprintf(buf , sizeof(buf), "%d\n", mvm->temperature);
 279
 280         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 281 }
 282
 283 /*
 284  * Set NIC Temperature
 285  * Cause the driver to ignore the actual NIC temperature reported by the FW
 286  * Enable: any value between IWL_MVM_DEBUG_SET_TEMPERATURE_MIN -
 287  * IWL_MVM_DEBUG_SET_TEMPERATURE_MAX
 288  * Disable: IWL_MVM_DEBUG_SET_TEMPERATURE_DISABLE
 289  */
 290 static ssize_t iwl_dbgfs_set_nic_temperature_write(struct iwl_mvm *mvm,
 291                                                    char *buf, size_t count,
 292                                                    loff_t *ppos)
 293 {
 294         int temperature;
 295
 296         if (!iwl_mvm_firmware_running(mvm) && !mvm->temperature_test)
 297                 return -EIO;
 298
 299         if (kstrtoint(buf, 10, &temperature))
 300                 return -EINVAL;
 301         /* not a legal temperature */
 302         if ((temperature > IWL_MVM_DEBUG_SET_TEMPERATURE_MAX &&
 303              temperature != IWL_MVM_DEBUG_SET_TEMPERATURE_DISABLE) ||
 304             temperature < IWL_MVM_DEBUG_SET_TEMPERATURE_MIN)
 305                 return -EINVAL;
 306
 307         mutex_lock(&mvm->mutex);
 308         if (temperature == IWL_MVM_DEBUG_SET_TEMPERATURE_DISABLE) {
 309                 if (!mvm->temperature_test)
 310                         goto out;
 311
 312                 mvm->temperature_test = false;
 313                 /* Since we can't read the temp while awake, just set
 314                  * it to zero until we get the next RX stats from the
 315                  * firmware.
 316                  */
 317                 mvm->temperature = 0;
 318         } else {
 319                 mvm->temperature_test = true;
 320                 mvm->temperature = temperature;
 321         }
 322         IWL_DEBUG_TEMP(mvm, "%sabling debug set temperature (temp = %d)\n",
 323                        mvm->temperature_test ? "En" : "Dis" ,
 324                        mvm->temperature);
 325         /* handle the temperature change */
 326         iwl_mvm_tt_handler(mvm);
 327
 328 out:
 329         mutex_unlock(&mvm->mutex);
 330
 331         return count;
 332 }
 333
 334 static ssize_t iwl_dbgfs_nic_temp_read(struct file *file,
 335                                        char __user *user_buf,
 336                                        size_t count, loff_t *ppos)
 337 {
 338         struct iwl_mvm *mvm = file->private_data;
 339         char buf[16];
 340         int pos, ret;
 341         s32 temp;
 342
 343         if (!iwl_mvm_firmware_running(mvm))
 344                 return -EIO;
 345
 346         mutex_lock(&mvm->mutex);
 347         ret = iwl_mvm_get_temp(mvm, &temp);
 348         mutex_unlock(&mvm->mutex);
 349
 350         if (ret)
 351                 return -EIO;
 352
 353         pos = scnprintf(buf , sizeof(buf), "%d\n", temp);
 354
 355         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 356 }
 357
 358 #ifdef CONFIG_ACPI
 359 static ssize_t iwl_dbgfs_sar_geo_profile_read(struct file *file,
 360                                               char __user *user_buf,
 361                                               size_t count, loff_t *ppos)
 362 {
 363         struct iwl_mvm *mvm = file->private_data;
 364         char buf[256];
 365         int pos = 0;
 366         int bufsz = sizeof(buf);
 367         int tbl_idx;
 368         u8 *value;
 369
 370         if (!iwl_mvm_firmware_running(mvm))
 371                 return -EIO;
 372
 373         mutex_lock(&mvm->mutex);
 374         tbl_idx = iwl_mvm_get_sar_geo_profile(mvm);
 375         if (tbl_idx < 0) {
 376                 mutex_unlock(&mvm->mutex);
 377                 return tbl_idx;
 378         }
 379
 380         if (!tbl_idx) {
 381                 pos = scnprintf(buf, bufsz,
 382                                 "SAR geographic profile disabled\n");
 383         } else {
 384                 value = &mvm->geo_profiles[tbl_idx - 1].values[0];
 385
 386                 pos += scnprintf(buf + pos, bufsz - pos,
 387                                  "Use geographic profile %d\n", tbl_idx);
 388                 pos += scnprintf(buf + pos, bufsz - pos,
 389                                  "2.4GHz:\n\tChain A offset: %hhd dBm\n\tChain B offset: %hhd dBm\n\tmax tx power: %hhd dBm\n",
 390                                  value[1], value[2], value[0]);
 391                 pos += scnprintf(buf + pos, bufsz - pos,
 392                                  "5.2GHz:\n\tChain A offset: %hhd dBm\n\tChain B offset: %hhd dBm\n\tmax tx power: %hhd dBm\n",
 393                                  value[4], value[5], value[3]);
 394         }
 395         mutex_unlock(&mvm->mutex);
 396
 397         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 398 }
 399 #endif
 400
 401 static ssize_t iwl_dbgfs_stations_read(struct file *file, char __user *user_buf,
 402                                        size_t count, loff_t *ppos)
 403 {
 404         struct iwl_mvm *mvm = file->private_data;
 405         struct ieee80211_sta *sta;
 406         char buf[400];
 407         int i, pos = 0, bufsz = sizeof(buf);
 408
 409         mutex_lock(&mvm->mutex);
 410
 411         for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) {
 412                 pos += scnprintf(buf + pos, bufsz - pos, "%.2d: ", i);
 413                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
 414                                                 lockdep_is_held(&mvm->mutex));
 415                 if (!sta)
 416                         pos += scnprintf(buf + pos, bufsz - pos, "N/A\n");
 417                 else if (IS_ERR(sta))
 418                         pos += scnprintf(buf + pos, bufsz - pos, "%ld\n",
 419                                          PTR_ERR(sta));
 420                 else
 421                         pos += scnprintf(buf + pos, bufsz - pos, "%pM\n",
 422                                          sta->addr);
 423         }
 424
 425         mutex_unlock(&mvm->mutex);
 426
 427         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 428 }
 429
 430 static ssize_t iwl_dbgfs_rs_data_read(struct file *file, char __user *user_buf,
 431                                       size_t count, loff_t *ppos)
 432 {
 433         struct ieee80211_sta *sta = file->private_data;
 434         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 435         struct iwl_lq_sta_rs_fw *lq_sta = &mvmsta->lq_sta.rs_fw;
 436         struct iwl_mvm *mvm = lq_sta->pers.drv;
 437         static const size_t bufsz = 2048;
 438         char *buff;
 439         int desc = 0;
 440         ssize_t ret;
 441
 442         buff = kmalloc(bufsz, GFP_KERNEL);
 443         if (!buff)
 444                 return -ENOMEM;
 445
 446         mutex_lock(&mvm->mutex);
 447
 448         desc += scnprintf(buff + desc, bufsz - desc, "sta_id %d\n",
 449                           lq_sta->pers.sta_id);
 450         desc += scnprintf(buff + desc, bufsz - desc,
 451                           "fixed rate 0x%X\n",
 452                           lq_sta->pers.dbg_fixed_rate);
 453         desc += scnprintf(buff + desc, bufsz - desc,
 454                           "A-MPDU size limit %d\n",
 455                           lq_sta->pers.dbg_agg_frame_count_lim);
 456         desc += scnprintf(buff + desc, bufsz - desc,
 457                           "valid_tx_ant %s%s%s\n",
 458                 (iwl_mvm_get_valid_tx_ant(mvm) & ANT_A) ? "ANT_A," : "",
 459                 (iwl_mvm_get_valid_tx_ant(mvm) & ANT_B) ? "ANT_B," : "",
 460                 (iwl_mvm_get_valid_tx_ant(mvm) & ANT_C) ? "ANT_C" : "");
 461         desc += scnprintf(buff + desc, bufsz - desc,
 462                           "last tx rate=0x%X ",
 463                           lq_sta->last_rate_n_flags);
 464
 465         desc += rs_pretty_print_rate(buff + desc, bufsz - desc,
 466                                      lq_sta->last_rate_n_flags);
 467         mutex_unlock(&mvm->mutex);
 468
 469         ret = simple_read_from_buffer(user_buf, count, ppos, buff, desc);
 470         kfree(buff);
 471         return ret;
 472 }
 473
 474 static ssize_t iwl_dbgfs_disable_power_off_read(struct file *file,
 475                                                 char __user *user_buf,
 476                                                 size_t count, loff_t *ppos)
 477 {
 478         struct iwl_mvm *mvm = file->private_data;
 479         char buf[64];
 480         int bufsz = sizeof(buf);
 481         int pos = 0;
 482
 483         pos += scnprintf(buf+pos, bufsz-pos, "disable_power_off_d0=%d\n",
 484                          mvm->disable_power_off);
 485         pos += scnprintf(buf+pos, bufsz-pos, "disable_power_off_d3=%d\n",
 486                          mvm->disable_power_off_d3);
 487
 488         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 489 }
 490
 491 static ssize_t iwl_dbgfs_disable_power_off_write(struct iwl_mvm *mvm, char *buf,
 492                                                  size_t count, loff_t *ppos)
 493 {
 494         int ret, val;
 495
 496         if (!iwl_mvm_firmware_running(mvm))
 497                 return -EIO;
 498
 499         if (!strncmp("disable_power_off_d0=", buf, 21)) {
 500                 if (sscanf(buf + 21, "%d", &val) != 1)
 501                         return -EINVAL;
 502                 mvm->disable_power_off = val;
 503         } else if (!strncmp("disable_power_off_d3=", buf, 21)) {
 504                 if (sscanf(buf + 21, "%d", &val) != 1)
 505                         return -EINVAL;
 506                 mvm->disable_power_off_d3 = val;
 507         } else {
 508                 return -EINVAL;
 509         }
 510
 511         mutex_lock(&mvm->mutex);
 512         ret = iwl_mvm_power_update_device(mvm);
 513         mutex_unlock(&mvm->mutex);
 514
 515         return ret ?: count;
 516 }
 517
 518 static
 519 int iwl_mvm_coex_dump_mbox(struct iwl_bt_coex_profile_notif *notif, char *buf,
 520                            int pos, int bufsz)
 521 {
 522         pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw0:\n");
 523
 524         BT_MBOX_PRINT(0, LE_SLAVE_LAT, false);
 525         BT_MBOX_PRINT(0, LE_PROF1, false);
 526         BT_MBOX_PRINT(0, LE_PROF2, false);
 527         BT_MBOX_PRINT(0, LE_PROF_OTHER, false);
 528         BT_MBOX_PRINT(0, CHL_SEQ_N, false);
 529         BT_MBOX_PRINT(0, INBAND_S, false);
 530         BT_MBOX_PRINT(0, LE_MIN_RSSI, false);
 531         BT_MBOX_PRINT(0, LE_SCAN, false);
 532         BT_MBOX_PRINT(0, LE_ADV, false);
 533         BT_MBOX_PRINT(0, LE_MAX_TX_POWER, false);
 534         BT_MBOX_PRINT(0, OPEN_CON_1, true);
 535
 536         pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw1:\n");
 537
 538         BT_MBOX_PRINT(1, BR_MAX_TX_POWER, false);
 539         BT_MBOX_PRINT(1, IP_SR, false);
 540         BT_MBOX_PRINT(1, LE_MSTR, false);
 541         BT_MBOX_PRINT(1, AGGR_TRFC_LD, false);
 542         BT_MBOX_PRINT(1, MSG_TYPE, false);
 543         BT_MBOX_PRINT(1, SSN, true);
 544
 545         pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw2:\n");
 546
 547         BT_MBOX_PRINT(2, SNIFF_ACT, false);
 548         BT_MBOX_PRINT(2, PAG, false);
 549         BT_MBOX_PRINT(2, INQUIRY, false);
 550         BT_MBOX_PRINT(2, CONN, false);
 551         BT_MBOX_PRINT(2, SNIFF_INTERVAL, false);
 552         BT_MBOX_PRINT(2, DISC, false);
 553         BT_MBOX_PRINT(2, SCO_TX_ACT, false);
 554         BT_MBOX_PRINT(2, SCO_RX_ACT, false);
 555         BT_MBOX_PRINT(2, ESCO_RE_TX, false);
 556         BT_MBOX_PRINT(2, SCO_DURATION, true);
 557
 558         pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw3:\n");
 559
 560         BT_MBOX_PRINT(3, SCO_STATE, false);
 561         BT_MBOX_PRINT(3, SNIFF_STATE, false);
 562         BT_MBOX_PRINT(3, A2DP_STATE, false);
 563         BT_MBOX_PRINT(3, A2DP_SRC, false);
 564         BT_MBOX_PRINT(3, ACL_STATE, false);
 565         BT_MBOX_PRINT(3, MSTR_STATE, false);
 566         BT_MBOX_PRINT(3, OBX_STATE, false);
 567         BT_MBOX_PRINT(3, OPEN_CON_2, false);
 568         BT_MBOX_PRINT(3, TRAFFIC_LOAD, false);
 569         BT_MBOX_PRINT(3, CHL_SEQN_LSB, false);
 570         BT_MBOX_PRINT(3, INBAND_P, false);
 571         BT_MBOX_PRINT(3, MSG_TYPE_2, false);
 572         BT_MBOX_PRINT(3, SSN_2, false);
 573         BT_MBOX_PRINT(3, UPDATE_REQUEST, true);
 574
 575         return pos;
 576 }
 577
 578 static ssize_t iwl_dbgfs_bt_notif_read(struct file *file, char __user *user_buf,
 579                                        size_t count, loff_t *ppos)
 580 {
 581         struct iwl_mvm *mvm = file->private_data;
 582         struct iwl_bt_coex_profile_notif *notif = &mvm->last_bt_notif;
 583         char *buf;
 584         int ret, pos = 0, bufsz = sizeof(char) * 1024;
 585
 586         buf = kmalloc(bufsz, GFP_KERNEL);
 587         if (!buf)
 588                 return -ENOMEM;
 589
 590         mutex_lock(&mvm->mutex);
 591
 592         pos += iwl_mvm_coex_dump_mbox(notif, buf, pos, bufsz);
 593
 594         pos += scnprintf(buf + pos, bufsz - pos, "bt_ci_compliance = %d\n",
 595                          notif->bt_ci_compliance);
 596         pos += scnprintf(buf + pos, bufsz - pos, "primary_ch_lut = %d\n",
 597                          le32_to_cpu(notif->primary_ch_lut));
 598         pos += scnprintf(buf + pos, bufsz - pos, "secondary_ch_lut = %d\n",
 599                          le32_to_cpu(notif->secondary_ch_lut));
 600         pos += scnprintf(buf + pos,
 601                          bufsz - pos, "bt_activity_grading = %d\n",
 602                          le32_to_cpu(notif->bt_activity_grading));
 603         pos += scnprintf(buf + pos, bufsz - pos, "bt_rrc = %d\n",
 604                          notif->rrc_status & 0xF);
 605         pos += scnprintf(buf + pos, bufsz - pos, "bt_ttc = %d\n",
 606                          notif->ttc_status & 0xF);
 607
 608         pos += scnprintf(buf + pos, bufsz - pos, "sync_sco = %d\n",
 609                          IWL_MVM_BT_COEX_SYNC2SCO);
 610         pos += scnprintf(buf + pos, bufsz - pos, "mplut = %d\n",
 611                          IWL_MVM_BT_COEX_MPLUT);
 612
 613         mutex_unlock(&mvm->mutex);
 614
 615         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 616         kfree(buf);
 617
 618         return ret;
 619 }
 620 #undef BT_MBOX_PRINT
 621
 622 static ssize_t iwl_dbgfs_bt_cmd_read(struct file *file, char __user *user_buf,
 623                                      size_t count, loff_t *ppos)
 624 {
 625         struct iwl_mvm *mvm = file->private_data;
 626         struct iwl_bt_coex_ci_cmd *cmd = &mvm->last_bt_ci_cmd;
 627         char buf[256];
 628         int bufsz = sizeof(buf);
 629         int pos = 0;
 630
 631         mutex_lock(&mvm->mutex);
 632
 633         pos += scnprintf(buf + pos, bufsz - pos, "Channel inhibition CMD\n");
 634         pos += scnprintf(buf + pos, bufsz - pos,
 635                          "\tPrimary Channel Bitmap 0x%016llx\n",
 636                          le64_to_cpu(cmd->bt_primary_ci));
 637         pos += scnprintf(buf + pos, bufsz - pos,
 638                          "\tSecondary Channel Bitmap 0x%016llx\n",
 639                          le64_to_cpu(cmd->bt_secondary_ci));
 640
 641         mutex_unlock(&mvm->mutex);
 642
 643         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 644 }
 645
 646 static ssize_t
 647 iwl_dbgfs_bt_tx_prio_write(struct iwl_mvm *mvm, char *buf,
 648                            size_t count, loff_t *ppos)
 649 {
 650         u32 bt_tx_prio;
 651
 652         if (sscanf(buf, "%u", &bt_tx_prio) != 1)
 653                 return -EINVAL;
 654         if (bt_tx_prio > 4)
 655                 return -EINVAL;
 656
 657         mvm->bt_tx_prio = bt_tx_prio;
 658
 659         return count;
 660 }
 661
 662 static ssize_t
 663 iwl_dbgfs_bt_force_ant_write(struct iwl_mvm *mvm, char *buf,
 664                              size_t count, loff_t *ppos)
 665 {
 666         static const char * const modes_str[BT_FORCE_ANT_MAX] = {
 667                 [BT_FORCE_ANT_DIS] = "dis",
 668                 [BT_FORCE_ANT_AUTO] = "auto",
 669                 [BT_FORCE_ANT_BT] = "bt",
 670                 [BT_FORCE_ANT_WIFI] = "wifi",
 671         };
 672         int ret, bt_force_ant_mode;
 673
 674         for (bt_force_ant_mode = 0;
 675              bt_force_ant_mode < ARRAY_SIZE(modes_str);
 676              bt_force_ant_mode++) {
 677                 if (!strcmp(buf, modes_str[bt_force_ant_mode]))
 678                         break;
 679         }
 680
 681         if (bt_force_ant_mode >= ARRAY_SIZE(modes_str))
 682                 return -EINVAL;
 683
 684         ret = 0;
 685         mutex_lock(&mvm->mutex);
 686         if (mvm->bt_force_ant_mode == bt_force_ant_mode)
 687                 goto out;
 688
 689         mvm->bt_force_ant_mode = bt_force_ant_mode;
 690         IWL_DEBUG_COEX(mvm, "Force mode: %s\n",
 691                        modes_str[mvm->bt_force_ant_mode]);
 692
 693         if (iwl_mvm_firmware_running(mvm))
 694                 ret = iwl_mvm_send_bt_init_conf(mvm);
 695         else
 696                 ret = 0;
 697
 698 out:
 699         mutex_unlock(&mvm->mutex);
 700         return ret ?: count;
 701 }
 702
 703 static ssize_t iwl_dbgfs_fw_ver_read(struct file *file, char __user *user_buf,
 704                                      size_t count, loff_t *ppos)
 705 {
 706         struct iwl_mvm *mvm = file->private_data;
 707         char *buff, *pos, *endpos;
 708         static const size_t bufsz = 1024;
 709         int ret;
 710
 711         buff = kmalloc(bufsz, GFP_KERNEL);
 712         if (!buff)
 713                 return -ENOMEM;
 714
 715         pos = buff;
 716         endpos = pos + bufsz;
 717
 718         pos += scnprintf(pos, endpos - pos, "FW prefix: %s\n",
 719                          mvm->trans->cfg->fw_name_pre);
 720         pos += scnprintf(pos, endpos - pos, "FW: %s\n",
 721                          mvm->fwrt.fw->human_readable);
 722         pos += scnprintf(pos, endpos - pos, "Device: %s\n",
 723                          mvm->fwrt.trans->cfg->name);
 724         pos += scnprintf(pos, endpos - pos, "Bus: %s\n",
 725                          mvm->fwrt.dev->bus->name);
 726
 727         ret = simple_read_from_buffer(user_buf, count, ppos, buff, pos - buff);
 728         kfree(buff);
 729
 730         return ret;
 731 }
 732
 733 #define PRINT_STATS_LE32(_struct, _memb)                                \
 734                          pos += scnprintf(buf + pos, bufsz - pos,       \
 735                                           fmt_table, #_memb,            \
 736                                           le32_to_cpu(_struct->_memb))
 737
 738 static ssize_t iwl_dbgfs_fw_rx_stats_read(struct file *file,
 739                                           char __user *user_buf, size_t count,
 740                                           loff_t *ppos)
 741 {
 742         struct iwl_mvm *mvm = file->private_data;
 743         static const char *fmt_table = "\t%-30s %10u\n";
 744         static const char *fmt_header = "%-32s\n";
 745         int pos = 0;
 746         char *buf;
 747         int ret;
 748         size_t bufsz;
 749
 750         if (iwl_mvm_has_new_rx_stats_api(mvm))
 751                 bufsz = ((sizeof(struct mvm_statistics_rx) /
 752                           sizeof(__le32)) * 43) + (4 * 33) + 1;
 753         else
 754                 /* 43 = size of each data line; 33 = size of each header */
 755                 bufsz = ((sizeof(struct mvm_statistics_rx_v3) /
 756                           sizeof(__le32)) * 43) + (4 * 33) + 1;
 757
 758         buf = kzalloc(bufsz, GFP_KERNEL);
 759         if (!buf)
 760                 return -ENOMEM;
 761
 762         mutex_lock(&mvm->mutex);
 763
 764         if (iwl_mvm_firmware_running(mvm))
 765                 iwl_mvm_request_statistics(mvm, false);
 766
 767         pos += scnprintf(buf + pos, bufsz - pos, fmt_header,
 768                          "Statistics_Rx - OFDM");
 769         if (!iwl_mvm_has_new_rx_stats_api(mvm)) {
 770                 struct mvm_statistics_rx_phy_v2 *ofdm = &mvm->rx_stats_v3.ofdm;
 771
 772                 PRINT_STATS_LE32(ofdm, ina_cnt);
 773                 PRINT_STATS_LE32(ofdm, fina_cnt);
 774                 PRINT_STATS_LE32(ofdm, plcp_err);
 775                 PRINT_STATS_LE32(ofdm, crc32_err);
 776                 PRINT_STATS_LE32(ofdm, overrun_err);
 777                 PRINT_STATS_LE32(ofdm, early_overrun_err);
 778                 PRINT_STATS_LE32(ofdm, crc32_good);
 779                 PRINT_STATS_LE32(ofdm, false_alarm_cnt);
 780                 PRINT_STATS_LE32(ofdm, fina_sync_err_cnt);
 781                 PRINT_STATS_LE32(ofdm, sfd_timeout);
 782                 PRINT_STATS_LE32(ofdm, fina_timeout);
 783                 PRINT_STATS_LE32(ofdm, unresponded_rts);
 784                 PRINT_STATS_LE32(ofdm, rxe_frame_lmt_overrun);
 785                 PRINT_STATS_LE32(ofdm, sent_ack_cnt);
 786                 PRINT_STATS_LE32(ofdm, sent_cts_cnt);
 787                 PRINT_STATS_LE32(ofdm, sent_ba_rsp_cnt);
 788                 PRINT_STATS_LE32(ofdm, dsp_self_kill);
 789                 PRINT_STATS_LE32(ofdm, mh_format_err);
 790                 PRINT_STATS_LE32(ofdm, re_acq_main_rssi_sum);
 791                 PRINT_STATS_LE32(ofdm, reserved);
 792         } else {
 793                 struct mvm_statistics_rx_phy *ofdm = &mvm->rx_stats.ofdm;
 794
 795                 PRINT_STATS_LE32(ofdm, unresponded_rts);
 796                 PRINT_STATS_LE32(ofdm, rxe_frame_lmt_overrun);
 797                 PRINT_STATS_LE32(ofdm, sent_ba_rsp_cnt);
 798                 PRINT_STATS_LE32(ofdm, dsp_self_kill);
 799                 PRINT_STATS_LE32(ofdm, reserved);
 800         }
 801
 802         pos += scnprintf(buf + pos, bufsz - pos, fmt_header,
 803                          "Statistics_Rx - CCK");
 804         if (!iwl_mvm_has_new_rx_stats_api(mvm)) {
 805                 struct mvm_statistics_rx_phy_v2 *cck = &mvm->rx_stats_v3.cck;
 806
 807                 PRINT_STATS_LE32(cck, ina_cnt);
 808                 PRINT_STATS_LE32(cck, fina_cnt);
 809                 PRINT_STATS_LE32(cck, plcp_err);
 810                 PRINT_STATS_LE32(cck, crc32_err);
 811                 PRINT_STATS_LE32(cck, overrun_err);
 812                 PRINT_STATS_LE32(cck, early_overrun_err);
 813                 PRINT_STATS_LE32(cck, crc32_good);
 814                 PRINT_STATS_LE32(cck, false_alarm_cnt);
 815                 PRINT_STATS_LE32(cck, fina_sync_err_cnt);
 816                 PRINT_STATS_LE32(cck, sfd_timeout);
 817                 PRINT_STATS_LE32(cck, fina_timeout);
 818                 PRINT_STATS_LE32(cck, unresponded_rts);
 819                 PRINT_STATS_LE32(cck, rxe_frame_lmt_overrun);
 820                 PRINT_STATS_LE32(cck, sent_ack_cnt);
 821                 PRINT_STATS_LE32(cck, sent_cts_cnt);
 822                 PRINT_STATS_LE32(cck, sent_ba_rsp_cnt);
 823                 PRINT_STATS_LE32(cck, dsp_self_kill);
 824                 PRINT_STATS_LE32(cck, mh_format_err);
 825                 PRINT_STATS_LE32(cck, re_acq_main_rssi_sum);
 826                 PRINT_STATS_LE32(cck, reserved);
 827         } else {
 828                 struct mvm_statistics_rx_phy *cck = &mvm->rx_stats.cck;
 829
 830                 PRINT_STATS_LE32(cck, unresponded_rts);
 831                 PRINT_STATS_LE32(cck, rxe_frame_lmt_overrun);
 832                 PRINT_STATS_LE32(cck, sent_ba_rsp_cnt);
 833                 PRINT_STATS_LE32(cck, dsp_self_kill);
 834                 PRINT_STATS_LE32(cck, reserved);
 835         }
 836
 837         pos += scnprintf(buf + pos, bufsz - pos, fmt_header,
 838                          "Statistics_Rx - GENERAL");
 839         if (!iwl_mvm_has_new_rx_stats_api(mvm)) {
 840                 struct mvm_statistics_rx_non_phy_v3 *general =
 841                         &mvm->rx_stats_v3.general;
 842
 843                 PRINT_STATS_LE32(general, bogus_cts);
 844                 PRINT_STATS_LE32(general, bogus_ack);
 845                 PRINT_STATS_LE32(general, non_bssid_frames);
 846                 PRINT_STATS_LE32(general, filtered_frames);
 847                 PRINT_STATS_LE32(general, non_channel_beacons);
 848                 PRINT_STATS_LE32(general, channel_beacons);
 849                 PRINT_STATS_LE32(general, num_missed_bcon);
 850                 PRINT_STATS_LE32(general, adc_rx_saturation_time);
 851                 PRINT_STATS_LE32(general, ina_detection_search_time);
 852                 PRINT_STATS_LE32(general, beacon_silence_rssi_a);
 853                 PRINT_STATS_LE32(general, beacon_silence_rssi_b);
 854                 PRINT_STATS_LE32(general, beacon_silence_rssi_c);
 855                 PRINT_STATS_LE32(general, interference_data_flag);
 856                 PRINT_STATS_LE32(general, channel_load);
 857                 PRINT_STATS_LE32(general, dsp_false_alarms);
 858                 PRINT_STATS_LE32(general, beacon_rssi_a);
 859                 PRINT_STATS_LE32(general, beacon_rssi_b);
 860                 PRINT_STATS_LE32(general, beacon_rssi_c);
 861                 PRINT_STATS_LE32(general, beacon_energy_a);
 862                 PRINT_STATS_LE32(general, beacon_energy_b);
 863                 PRINT_STATS_LE32(general, beacon_energy_c);
 864                 PRINT_STATS_LE32(general, num_bt_kills);
 865                 PRINT_STATS_LE32(general, mac_id);
 866                 PRINT_STATS_LE32(general, directed_data_mpdu);
 867         } else {
 868                 struct mvm_statistics_rx_non_phy *general =
 869                         &mvm->rx_stats.general;
 870
 871                 PRINT_STATS_LE32(general, bogus_cts);
 872                 PRINT_STATS_LE32(general, bogus_ack);
 873                 PRINT_STATS_LE32(general, non_channel_beacons);
 874                 PRINT_STATS_LE32(general, channel_beacons);
 875                 PRINT_STATS_LE32(general, num_missed_bcon);
 876                 PRINT_STATS_LE32(general, adc_rx_saturation_time);
 877                 PRINT_STATS_LE32(general, ina_detection_search_time);
 878                 PRINT_STATS_LE32(general, beacon_silence_rssi_a);
 879                 PRINT_STATS_LE32(general, beacon_silence_rssi_b);
 880                 PRINT_STATS_LE32(general, beacon_silence_rssi_c);
 881                 PRINT_STATS_LE32(general, interference_data_flag);
 882                 PRINT_STATS_LE32(general, channel_load);
 883                 PRINT_STATS_LE32(general, beacon_rssi_a);
 884                 PRINT_STATS_LE32(general, beacon_rssi_b);
 885                 PRINT_STATS_LE32(general, beacon_rssi_c);
 886                 PRINT_STATS_LE32(general, beacon_energy_a);
 887                 PRINT_STATS_LE32(general, beacon_energy_b);
 888                 PRINT_STATS_LE32(general, beacon_energy_c);
 889                 PRINT_STATS_LE32(general, num_bt_kills);
 890                 PRINT_STATS_LE32(general, mac_id);
 891         }
 892
 893         pos += scnprintf(buf + pos, bufsz - pos, fmt_header,
 894                          "Statistics_Rx - HT");
 895         if (!iwl_mvm_has_new_rx_stats_api(mvm)) {
 896                 struct mvm_statistics_rx_ht_phy_v1 *ht =
 897                         &mvm->rx_stats_v3.ofdm_ht;
 898
 899                 PRINT_STATS_LE32(ht, plcp_err);
 900                 PRINT_STATS_LE32(ht, overrun_err);
 901                 PRINT_STATS_LE32(ht, early_overrun_err);
 902                 PRINT_STATS_LE32(ht, crc32_good);
 903                 PRINT_STATS_LE32(ht, crc32_err);
 904                 PRINT_STATS_LE32(ht, mh_format_err);
 905                 PRINT_STATS_LE32(ht, agg_crc32_good);
 906                 PRINT_STATS_LE32(ht, agg_mpdu_cnt);
 907                 PRINT_STATS_LE32(ht, agg_cnt);
 908                 PRINT_STATS_LE32(ht, unsupport_mcs);
 909         } else {
 910                 struct mvm_statistics_rx_ht_phy *ht =
 911                         &mvm->rx_stats.ofdm_ht;
 912
 913                 PRINT_STATS_LE32(ht, mh_format_err);
 914                 PRINT_STATS_LE32(ht, agg_mpdu_cnt);
 915                 PRINT_STATS_LE32(ht, agg_cnt);
 916                 PRINT_STATS_LE32(ht, unsupport_mcs);
 917         }
 918
 919         mutex_unlock(&mvm->mutex);
 920
 921         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 922         kfree(buf);
 923
 924         return ret;
 925 }
 926 #undef PRINT_STAT_LE32
 927
 928 static ssize_t iwl_dbgfs_frame_stats_read(struct iwl_mvm *mvm,
 929                                           char __user *user_buf, size_t count,
 930                                           loff_t *ppos,
 931                                           struct iwl_mvm_frame_stats *stats)
 932 {
 933         char *buff, *pos, *endpos;
 934         int idx, i;
 935         int ret;
 936         static const size_t bufsz = 1024;
 937
 938         buff = kmalloc(bufsz, GFP_KERNEL);
 939         if (!buff)
 940                 return -ENOMEM;
 941
 942         spin_lock_bh(&mvm->drv_stats_lock);
 943
 944         pos = buff;
 945         endpos = pos + bufsz;
 946
 947         pos += scnprintf(pos, endpos - pos,
 948                          "Legacy/HT/VHT\t:\t%d/%d/%d\n",
 949                          stats->legacy_frames,
 950                          stats->ht_frames,
 951                          stats->vht_frames);
 952         pos += scnprintf(pos, endpos - pos, "20/40/80\t:\t%d/%d/%d\n",
 953                          stats->bw_20_frames,
 954                          stats->bw_40_frames,
 955                          stats->bw_80_frames);
 956         pos += scnprintf(pos, endpos - pos, "NGI/SGI\t\t:\t%d/%d\n",
 957                          stats->ngi_frames,
 958                          stats->sgi_frames);
 959         pos += scnprintf(pos, endpos - pos, "SISO/MIMO2\t:\t%d/%d\n",
 960                          stats->siso_frames,
 961                          stats->mimo2_frames);
 962         pos += scnprintf(pos, endpos - pos, "FAIL/SCSS\t:\t%d/%d\n",
 963                          stats->fail_frames,
 964                          stats->success_frames);
 965         pos += scnprintf(pos, endpos - pos, "MPDUs agg\t:\t%d\n",
 966                          stats->agg_frames);
 967         pos += scnprintf(pos, endpos - pos, "A-MPDUs\t\t:\t%d\n",
 968                          stats->ampdu_count);
 969         pos += scnprintf(pos, endpos - pos, "Avg MPDUs/A-MPDU:\t%d\n",
 970                          stats->ampdu_count > 0 ?
 971                          (stats->agg_frames / stats->ampdu_count) : 0);
 972
 973         pos += scnprintf(pos, endpos - pos, "Last Rates\n");
 974
 975         idx = stats->last_frame_idx - 1;
 976         for (i = 0; i < ARRAY_SIZE(stats->last_rates); i++) {
 977                 idx = (idx + 1) % ARRAY_SIZE(stats->last_rates);
 978                 if (stats->last_rates[idx] == 0)
 979                         continue;
 980                 pos += scnprintf(pos, endpos - pos, "Rate[%d]: ",
 981                                  (int)(ARRAY_SIZE(stats->last_rates) - i));
 982                 pos += rs_pretty_print_rate(pos, endpos - pos,
 983                                             stats->last_rates[idx]);
 984         }
 985         spin_unlock_bh(&mvm->drv_stats_lock);
 986
 987         ret = simple_read_from_buffer(user_buf, count, ppos, buff, pos - buff);
 988         kfree(buff);
 989
 990         return ret;
 991 }
 992
 993 static ssize_t iwl_dbgfs_drv_rx_stats_read(struct file *file,
 994                                            char __user *user_buf, size_t count,
 995                                            loff_t *ppos)
 996 {
 997         struct iwl_mvm *mvm = file->private_data;
 998
 999         return iwl_dbgfs_frame_stats_read(mvm, user_buf, count, ppos,
1000                                           &mvm->drv_rx_stats);
1001 }
1002
1003 static ssize_t iwl_dbgfs_fw_restart_write(struct iwl_mvm *mvm, char *buf,
1004                                           size_t count, loff_t *ppos)
1005 {
1006         int __maybe_unused ret;
1007
1008         if (!iwl_mvm_firmware_running(mvm))
1009                 return -EIO;
1010
1011         mutex_lock(&mvm->mutex);
1012
1013         /* allow one more restart that we're provoking here */
1014         if (mvm->fw_restart >= 0)
1015                 mvm->fw_restart++;
1016
1017         /* take the return value to make compiler happy - it will fail anyway */
1018         ret = iwl_mvm_send_cmd_pdu(mvm, REPLY_ERROR, 0, 0, NULL);
1019
1020         mutex_unlock(&mvm->mutex);
1021
1022         return count;
1023 }
1024
1025 static ssize_t iwl_dbgfs_fw_nmi_write(struct iwl_mvm *mvm, char *buf,
1026                                       size_t count, loff_t *ppos)
1027 {
1028         int ret;
1029
1030         if (!iwl_mvm_firmware_running(mvm))
1031                 return -EIO;
1032
1033         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_NMI);
1034         if (ret)
1035                 return ret;
1036
1037         iwl_force_nmi(mvm->trans);
1038
1039         iwl_mvm_unref(mvm, IWL_MVM_REF_NMI);
1040
1041         return count;
1042 }
1043
1044 static ssize_t
1045 iwl_dbgfs_scan_ant_rxchain_read(struct file *file,
1046                                 char __user *user_buf,
1047                                 size_t count, loff_t *ppos)
1048 {
1049         struct iwl_mvm *mvm = file->private_data;
1050         int pos = 0;
1051         char buf[32];
1052         const size_t bufsz = sizeof(buf);
1053
1054         /* print which antennas were set for the scan command by the user */
1055         pos += scnprintf(buf + pos, bufsz - pos, "Antennas for scan: ");
1056         if (mvm->scan_rx_ant & ANT_A)
1057                 pos += scnprintf(buf + pos, bufsz - pos, "A");
1058         if (mvm->scan_rx_ant & ANT_B)
1059                 pos += scnprintf(buf + pos, bufsz - pos, "B");
1060         if (mvm->scan_rx_ant & ANT_C)
1061                 pos += scnprintf(buf + pos, bufsz - pos, "C");
1062         pos += scnprintf(buf + pos, bufsz - pos, " (%hhx)\n", mvm->scan_rx_ant);
1063
1064         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1065 }
1066
1067 static ssize_t
1068 iwl_dbgfs_scan_ant_rxchain_write(struct iwl_mvm *mvm, char *buf,
1069                                  size_t count, loff_t *ppos)
1070 {
1071         u8 scan_rx_ant;
1072
1073         if (!iwl_mvm_firmware_running(mvm))
1074                 return -EIO;
1075
1076         if (sscanf(buf, "%hhx", &scan_rx_ant) != 1)
1077                 return -EINVAL;
1078         if (scan_rx_ant > ANT_ABC)
1079                 return -EINVAL;
1080         if (scan_rx_ant & ~(iwl_mvm_get_valid_rx_ant(mvm)))
1081                 return -EINVAL;
1082
1083         if (mvm->scan_rx_ant != scan_rx_ant) {
1084                 mvm->scan_rx_ant = scan_rx_ant;
1085                 if (fw_has_capa(&mvm->fw->ucode_capa,
1086                                 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
1087                         iwl_mvm_config_scan(mvm);
1088         }
1089
1090         return count;
1091 }
1092
1093 static ssize_t iwl_dbgfs_indirection_tbl_write(struct iwl_mvm *mvm,
1094                                                char *buf, size_t count,
1095                                                loff_t *ppos)
1096 {
1097         struct iwl_rss_config_cmd cmd = {
1098                 .flags = cpu_to_le32(IWL_RSS_ENABLE),
1099                 .hash_mask = IWL_RSS_HASH_TYPE_IPV4_TCP |
1100                              IWL_RSS_HASH_TYPE_IPV4_UDP |
1101                              IWL_RSS_HASH_TYPE_IPV4_PAYLOAD |
1102                              IWL_RSS_HASH_TYPE_IPV6_TCP |
1103                              IWL_RSS_HASH_TYPE_IPV6_UDP |
1104                              IWL_RSS_HASH_TYPE_IPV6_PAYLOAD,
1105         };
1106         int ret, i, num_repeats, nbytes = count / 2;
1107
1108         ret = hex2bin(cmd.indirection_table, buf, nbytes);
1109         if (ret)
1110                 return ret;
1111
1112         /*
1113          * The input is the redirection table, partial or full.
1114          * Repeat the pattern if needed.
1115          * For example, input of 01020F will be repeated 42 times,
1116          * indirecting RSS hash results to queues 1, 2, 15 (skipping
1117          * queues 3 - 14).
1118          */
1119         num_repeats = ARRAY_SIZE(cmd.indirection_table) / nbytes;
1120         for (i = 1; i < num_repeats; i++)
1121                 memcpy(&cmd.indirection_table[i * nbytes],
1122                        cmd.indirection_table, nbytes);
1123         /* handle cut in the middle pattern for the last places */
1124         memcpy(&cmd.indirection_table[i * nbytes], cmd.indirection_table,
1125                ARRAY_SIZE(cmd.indirection_table) % nbytes);
1126
1127         netdev_rss_key_fill(cmd.secret_key, sizeof(cmd.secret_key));
1128
1129         mutex_lock(&mvm->mutex);
1130         if (iwl_mvm_firmware_running(mvm))
1131                 ret = iwl_mvm_send_cmd_pdu(mvm, RSS_CONFIG_CMD, 0,
1132                                            sizeof(cmd), &cmd);
1133         else
1134                 ret = 0;
1135         mutex_unlock(&mvm->mutex);
1136
1137         return ret ?: count;
1138 }
1139
1140 static ssize_t iwl_dbgfs_inject_packet_write(struct iwl_mvm *mvm,
1141                                              char *buf, size_t count,
1142                                              loff_t *ppos)
1143 {
1144         struct iwl_rx_cmd_buffer rxb = {
1145                 ._rx_page_order = 0,
1146                 .truesize = 0, /* not used */
1147                 ._offset = 0,
1148         };
1149         struct iwl_rx_packet *pkt;
1150         struct iwl_rx_mpdu_desc *desc;
1151         int bin_len = count / 2;
1152         int ret = -EINVAL;
1153         size_t mpdu_cmd_hdr_size =
1154                 (mvm->trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560) ?
1155                 sizeof(struct iwl_rx_mpdu_desc) :
1156                 IWL_RX_DESC_SIZE_V1;
1157
1158         if (!iwl_mvm_firmware_running(mvm))
1159                 return -EIO;
1160
1161         /* supporting only 9000 descriptor */
1162         if (!mvm->trans->cfg->mq_rx_supported)
1163                 return -ENOTSUPP;
1164
1165         rxb._page = alloc_pages(GFP_ATOMIC, 0);
1166         if (!rxb._page)
1167                 return -ENOMEM;
1168         pkt = rxb_addr(&rxb);
1169
1170         ret = hex2bin(page_address(rxb._page), buf, bin_len);
1171         if (ret)
1172                 goto out;
1173
1174         /* avoid invalid memory access */
1175         if (bin_len < sizeof(*pkt) + mpdu_cmd_hdr_size)
1176                 goto out;
1177
1178         /* check this is RX packet */
1179         if (WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd) !=
1180             WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))
1181                 goto out;
1182
1183         /* check the length in metadata matches actual received length */
1184         desc = (void *)pkt->data;
1185         if (le16_to_cpu(desc->mpdu_len) !=
1186             (bin_len - mpdu_cmd_hdr_size - sizeof(*pkt)))
1187                 goto out;
1188
1189         local_bh_disable();
1190         iwl_mvm_rx_mpdu_mq(mvm, NULL, &rxb, 0);
1191         local_bh_enable();
1192         ret = 0;
1193
1194 out:
1195         iwl_free_rxb(&rxb);
1196
1197         return ret ?: count;
1198 }
1199
1200 static ssize_t iwl_dbgfs_fw_dbg_conf_read(struct file *file,
1201                                           char __user *user_buf,
1202                                           size_t count, loff_t *ppos)
1203 {
1204         struct iwl_mvm *mvm = file->private_data;
1205         int conf;
1206         char buf[8];
1207         const size_t bufsz = sizeof(buf);
1208         int pos = 0;
1209
1210         mutex_lock(&mvm->mutex);
1211         conf = mvm->fwrt.dump.conf;
1212         mutex_unlock(&mvm->mutex);
1213
1214         pos += scnprintf(buf + pos, bufsz - pos, "%d\n", conf);
1215
1216         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1217 }
1218
1219 /*
1220  * Enable / Disable continuous recording.
1221  * Cause the FW to start continuous recording, by sending the relevant hcmd.
1222  * Enable: input of every integer larger than 0, ENABLE_CONT_RECORDING.
1223  * Disable: for 0 as input, DISABLE_CONT_RECORDING.
1224  */
1225 static ssize_t iwl_dbgfs_cont_recording_write(struct iwl_mvm *mvm,
1226                                               char *buf, size_t count,
1227                                               loff_t *ppos)
1228 {
1229         struct iwl_trans *trans = mvm->trans;
1230         const struct iwl_fw_dbg_dest_tlv_v1 *dest = trans->dbg_dest_tlv;
1231         struct iwl_continuous_record_cmd cont_rec = {};
1232         int ret, rec_mode;
1233
1234         if (!iwl_mvm_firmware_running(mvm))
1235                 return -EIO;
1236
1237         if (!dest)
1238                 return -EOPNOTSUPP;
1239
1240         if (dest->monitor_mode != SMEM_MODE ||
1241             trans->cfg->device_family < IWL_DEVICE_FAMILY_8000)
1242                 return -EOPNOTSUPP;
1243
1244         ret = kstrtoint(buf, 0, &rec_mode);
1245         if (ret)
1246                 return ret;
1247
1248         cont_rec.record_mode.enable_recording = rec_mode ?
1249                 cpu_to_le16(ENABLE_CONT_RECORDING) :
1250                 cpu_to_le16(DISABLE_CONT_RECORDING);
1251
1252         mutex_lock(&mvm->mutex);
1253         ret = iwl_mvm_send_cmd_pdu(mvm, LDBG_CONFIG_CMD, 0,
1254                                    sizeof(cont_rec), &cont_rec);
1255         mutex_unlock(&mvm->mutex);
1256
1257         return ret ?: count;
1258 }
1259
1260 static ssize_t iwl_dbgfs_fw_dbg_conf_write(struct iwl_mvm *mvm,
1261                                            char *buf, size_t count,
1262                                            loff_t *ppos)
1263 {
1264         unsigned int conf_id;
1265         int ret;
1266
1267         if (!iwl_mvm_firmware_running(mvm))
1268                 return -EIO;
1269
1270         ret = kstrtouint(buf, 0, &conf_id);
1271         if (ret)
1272                 return ret;
1273
1274         if (WARN_ON(conf_id >= FW_DBG_CONF_MAX))
1275                 return -EINVAL;
1276
1277         mutex_lock(&mvm->mutex);
1278         ret = iwl_fw_start_dbg_conf(&mvm->fwrt, conf_id);
1279         mutex_unlock(&mvm->mutex);
1280
1281         return ret ?: count;
1282 }
1283
1284 static ssize_t iwl_dbgfs_fw_dbg_collect_write(struct iwl_mvm *mvm,
1285                                               char *buf, size_t count,
1286                                               loff_t *ppos)
1287 {
1288         int ret;
1289
1290         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PRPH_WRITE);
1291         if (ret)
1292                 return ret;
1293         if (count == 0)
1294                 return 0;
1295
1296         iwl_fw_dbg_collect(&mvm->fwrt, FW_DBG_TRIGGER_USER, buf,
1297                            (count - 1), NULL);
1298
1299         iwl_mvm_unref(mvm, IWL_MVM_REF_PRPH_WRITE);
1300
1301         return count;
1302 }
1303
1304 static ssize_t iwl_dbgfs_max_amsdu_len_write(struct iwl_mvm *mvm,
1305                                              char *buf, size_t count,
1306                                              loff_t *ppos)
1307 {
1308         unsigned int max_amsdu_len;
1309         int ret;
1310
1311         ret = kstrtouint(buf, 0, &max_amsdu_len);
1312         if (ret)
1313                 return ret;
1314
1315         if (max_amsdu_len > IEEE80211_MAX_MPDU_LEN_VHT_11454)
1316                 return -EINVAL;
1317         mvm->max_amsdu_len = max_amsdu_len;
1318
1319         return count;
1320 }
1321
1322 #define ADD_TEXT(...) pos += scnprintf(buf + pos, bufsz - pos, __VA_ARGS__)
1323 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1324 static ssize_t iwl_dbgfs_bcast_filters_read(struct file *file,
1325                                             char __user *user_buf,
1326                                             size_t count, loff_t *ppos)
1327 {
1328         struct iwl_mvm *mvm = file->private_data;
1329         struct iwl_bcast_filter_cmd cmd;
1330         const struct iwl_fw_bcast_filter *filter;
1331         char *buf;
1332         int bufsz = 1024;
1333         int i, j, pos = 0;
1334         ssize_t ret;
1335
1336         buf = kzalloc(bufsz, GFP_KERNEL);
1337         if (!buf)
1338                 return -ENOMEM;
1339
1340         mutex_lock(&mvm->mutex);
1341         if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd)) {
1342                 ADD_TEXT("None\n");
1343                 mutex_unlock(&mvm->mutex);
1344                 goto out;
1345         }
1346         mutex_unlock(&mvm->mutex);
1347
1348         for (i = 0; cmd.filters[i].attrs[0].mask; i++) {
1349                 filter = &cmd.filters[i];
1350
1351                 ADD_TEXT("Filter [%d]:\n", i);
1352                 ADD_TEXT("\tDiscard=%d\n", filter->discard);
1353                 ADD_TEXT("\tFrame Type: %s\n",
1354                          filter->frame_type ? "IPv4" : "Generic");
1355
1356                 for (j = 0; j < ARRAY_SIZE(filter->attrs); j++) {
1357                         const struct iwl_fw_bcast_filter_attr *attr;
1358
1359                         attr = &filter->attrs[j];
1360                         if (!attr->mask)
1361                                 break;
1362
1363                         ADD_TEXT("\tAttr [%d]: offset=%d (from %s), mask=0x%x, value=0x%x reserved=0x%x\n",
1364                                  j, attr->offset,
1365                                  attr->offset_type ? "IP End" :
1366                                                      "Payload Start",
1367                                  be32_to_cpu(attr->mask),
1368                                  be32_to_cpu(attr->val),
1369                                  le16_to_cpu(attr->reserved1));
1370                 }
1371         }
1372 out:
1373         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1374         kfree(buf);
1375         return ret;
1376 }
1377
1378 static ssize_t iwl_dbgfs_bcast_filters_write(struct iwl_mvm *mvm, char *buf,
1379                                              size_t count, loff_t *ppos)
1380 {
1381         int pos, next_pos;
1382         struct iwl_fw_bcast_filter filter = {};
1383         struct iwl_bcast_filter_cmd cmd;
1384         u32 filter_id, attr_id, mask, value;
1385         int err = 0;
1386
1387         if (sscanf(buf, "%d %hhi %hhi %n", &filter_id, &filter.discard,
1388                    &filter.frame_type, &pos) != 3)
1389                 return -EINVAL;
1390
1391         if (filter_id >= ARRAY_SIZE(mvm->dbgfs_bcast_filtering.cmd.filters) ||
1392             filter.frame_type > BCAST_FILTER_FRAME_TYPE_IPV4)
1393                 return -EINVAL;
1394
1395         for (attr_id = 0; attr_id < ARRAY_SIZE(filter.attrs);
1396              attr_id++) {
1397                 struct iwl_fw_bcast_filter_attr *attr =
1398                                 &filter.attrs[attr_id];
1399
1400                 if (pos >= count)
1401                         break;
1402
1403                 if (sscanf(&buf[pos], "%hhi %hhi %i %i %n",
1404                            &attr->offset, &attr->offset_type,
1405                            &mask, &value, &next_pos) != 4)
1406                         return -EINVAL;
1407
1408                 attr->mask = cpu_to_be32(mask);
1409                 attr->val = cpu_to_be32(value);
1410                 if (mask)
1411                         filter.num_attrs++;
1412
1413                 pos += next_pos;
1414         }
1415
1416         mutex_lock(&mvm->mutex);
1417         memcpy(&mvm->dbgfs_bcast_filtering.cmd.filters[filter_id],
1418                &filter, sizeof(filter));
1419
1420         /* send updated bcast filtering configuration */
1421         if (iwl_mvm_firmware_running(mvm) &&
1422             mvm->dbgfs_bcast_filtering.override &&
1423             iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1424                 err = iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1425                                            sizeof(cmd), &cmd);
1426         mutex_unlock(&mvm->mutex);
1427
1428         return err ?: count;
1429 }
1430
1431 static ssize_t iwl_dbgfs_bcast_filters_macs_read(struct file *file,
1432                                                  char __user *user_buf,
1433                                                  size_t count, loff_t *ppos)
1434 {
1435         struct iwl_mvm *mvm = file->private_data;
1436         struct iwl_bcast_filter_cmd cmd;
1437         char *buf;
1438         int bufsz = 1024;
1439         int i, pos = 0;
1440         ssize_t ret;
1441
1442         buf = kzalloc(bufsz, GFP_KERNEL);
1443         if (!buf)
1444                 return -ENOMEM;
1445
1446         mutex_lock(&mvm->mutex);
1447         if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd)) {
1448                 ADD_TEXT("None\n");
1449                 mutex_unlock(&mvm->mutex);
1450                 goto out;
1451         }
1452         mutex_unlock(&mvm->mutex);
1453
1454         for (i = 0; i < ARRAY_SIZE(cmd.macs); i++) {
1455                 const struct iwl_fw_bcast_mac *mac = &cmd.macs[i];
1456
1457                 ADD_TEXT("Mac [%d]: discard=%d attached_filters=0x%x\n",
1458                          i, mac->default_discard, mac->attached_filters);
1459         }
1460 out:
1461         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1462         kfree(buf);
1463         return ret;
1464 }
1465
1466 static ssize_t iwl_dbgfs_bcast_filters_macs_write(struct iwl_mvm *mvm,
1467                                                   char *buf, size_t count,
1468                                                   loff_t *ppos)
1469 {
1470         struct iwl_bcast_filter_cmd cmd;
1471         struct iwl_fw_bcast_mac mac = {};
1472         u32 mac_id, attached_filters;
1473         int err = 0;
1474
1475         if (!mvm->bcast_filters)
1476                 return -ENOENT;
1477
1478         if (sscanf(buf, "%d %hhi %i", &mac_id, &mac.default_discard,
1479                    &attached_filters) != 3)
1480                 return -EINVAL;
1481
1482         if (mac_id >= ARRAY_SIZE(cmd.macs) ||
1483             mac.default_discard > 1 ||
1484             attached_filters >= BIT(ARRAY_SIZE(cmd.filters)))
1485                 return -EINVAL;
1486
1487         mac.attached_filters = cpu_to_le16(attached_filters);
1488
1489         mutex_lock(&mvm->mutex);
1490         memcpy(&mvm->dbgfs_bcast_filtering.cmd.macs[mac_id],
1491                &mac, sizeof(mac));
1492
1493         /* send updated bcast filtering configuration */
1494         if (iwl_mvm_firmware_running(mvm) &&
1495             mvm->dbgfs_bcast_filtering.override &&
1496             iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1497                 err = iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1498                                            sizeof(cmd), &cmd);
1499         mutex_unlock(&mvm->mutex);
1500
1501         return err ?: count;
1502 }
1503 #endif
1504
1505 #ifdef CONFIG_PM_SLEEP
1506 static ssize_t iwl_dbgfs_d3_sram_write(struct iwl_mvm *mvm, char *buf,
1507                                        size_t count, loff_t *ppos)
1508 {
1509         int store;
1510
1511         if (sscanf(buf, "%d", &store) != 1)
1512                 return -EINVAL;
1513
1514         mvm->store_d3_resume_sram = store;
1515
1516         return count;
1517 }
1518
1519 static ssize_t iwl_dbgfs_d3_sram_read(struct file *file, char __user *user_buf,
1520                                       size_t count, loff_t *ppos)
1521 {
1522         struct iwl_mvm *mvm = file->private_data;
1523         const struct fw_img *img;
1524         int ofs, len, pos = 0;
1525         size_t bufsz, ret;
1526         char *buf;
1527         u8 *ptr = mvm->d3_resume_sram;
1528
1529         img = &mvm->fw->img[IWL_UCODE_WOWLAN];
1530         len = img->sec[IWL_UCODE_SECTION_DATA].len;
1531
1532         bufsz = len * 4 + 256;
1533         buf = kzalloc(bufsz, GFP_KERNEL);
1534         if (!buf)
1535                 return -ENOMEM;
1536
1537         pos += scnprintf(buf, bufsz, "D3 SRAM capture: %sabled\n",
1538                          mvm->store_d3_resume_sram ? "en" : "dis");
1539
1540         if (ptr) {
1541                 for (ofs = 0; ofs < len; ofs += 16) {
1542                         pos += scnprintf(buf + pos, bufsz - pos,
1543                                          "0x%.4x %16ph\n", ofs, ptr + ofs);
1544                 }
1545         } else {
1546                 pos += scnprintf(buf + pos, bufsz - pos,
1547                                  "(no data captured)\n");
1548         }
1549
1550         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1551
1552         kfree(buf);
1553
1554         return ret;
1555 }
1556 #endif
1557
1558 #define PRINT_MVM_REF(ref) do {                                         \
1559         if (mvm->refs[ref])                                             \
1560                 pos += scnprintf(buf + pos, bufsz - pos,                \
1561                                  "\t(0x%lx): %d %s\n",                  \
1562                                  BIT(ref), mvm->refs[ref], #ref);       \
1563 } while (0)
1564
1565 static ssize_t iwl_dbgfs_d0i3_refs_read(struct file *file,
1566                                         char __user *user_buf,
1567                                         size_t count, loff_t *ppos)
1568 {
1569         struct iwl_mvm *mvm = file->private_data;
1570         int i, pos = 0;
1571         char buf[256];
1572         const size_t bufsz = sizeof(buf);
1573         u32 refs = 0;
1574
1575         for (i = 0; i < IWL_MVM_REF_COUNT; i++)
1576                 if (mvm->refs[i])
1577                         refs |= BIT(i);
1578
1579         pos += scnprintf(buf + pos, bufsz - pos, "taken mvm refs: 0x%x\n",
1580                          refs);
1581
1582         PRINT_MVM_REF(IWL_MVM_REF_UCODE_DOWN);
1583         PRINT_MVM_REF(IWL_MVM_REF_SCAN);
1584         PRINT_MVM_REF(IWL_MVM_REF_ROC);
1585         PRINT_MVM_REF(IWL_MVM_REF_ROC_AUX);
1586         PRINT_MVM_REF(IWL_MVM_REF_P2P_CLIENT);
1587         PRINT_MVM_REF(IWL_MVM_REF_AP_IBSS);
1588         PRINT_MVM_REF(IWL_MVM_REF_USER);
1589         PRINT_MVM_REF(IWL_MVM_REF_TX);
1590         PRINT_MVM_REF(IWL_MVM_REF_TX_AGG);
1591         PRINT_MVM_REF(IWL_MVM_REF_ADD_IF);
1592         PRINT_MVM_REF(IWL_MVM_REF_START_AP);
1593         PRINT_MVM_REF(IWL_MVM_REF_BSS_CHANGED);
1594         PRINT_MVM_REF(IWL_MVM_REF_PREPARE_TX);
1595         PRINT_MVM_REF(IWL_MVM_REF_PROTECT_TDLS);
1596         PRINT_MVM_REF(IWL_MVM_REF_CHECK_CTKILL);
1597         PRINT_MVM_REF(IWL_MVM_REF_PRPH_READ);
1598         PRINT_MVM_REF(IWL_MVM_REF_PRPH_WRITE);
1599         PRINT_MVM_REF(IWL_MVM_REF_NMI);
1600         PRINT_MVM_REF(IWL_MVM_REF_TM_CMD);
1601         PRINT_MVM_REF(IWL_MVM_REF_EXIT_WORK);
1602         PRINT_MVM_REF(IWL_MVM_REF_PROTECT_CSA);
1603         PRINT_MVM_REF(IWL_MVM_REF_FW_DBG_COLLECT);
1604         PRINT_MVM_REF(IWL_MVM_REF_INIT_UCODE);
1605         PRINT_MVM_REF(IWL_MVM_REF_SENDING_CMD);
1606         PRINT_MVM_REF(IWL_MVM_REF_RX);
1607
1608         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1609 }
1610
1611 static ssize_t iwl_dbgfs_d0i3_refs_write(struct iwl_mvm *mvm, char *buf,
1612                                          size_t count, loff_t *ppos)
1613 {
1614         unsigned long value;
1615         int ret;
1616         bool taken;
1617
1618         ret = kstrtoul(buf, 10, &value);
1619         if (ret < 0)
1620                 return ret;
1621
1622         mutex_lock(&mvm->mutex);
1623
1624         taken = mvm->refs[IWL_MVM_REF_USER];
1625         if (value == 1 && !taken)
1626                 iwl_mvm_ref(mvm, IWL_MVM_REF_USER);
1627         else if (value == 0 && taken)
1628                 iwl_mvm_unref(mvm, IWL_MVM_REF_USER);
1629         else
1630                 ret = -EINVAL;
1631
1632         mutex_unlock(&mvm->mutex);
1633
1634         if (ret < 0)
1635                 return ret;
1636         return count;
1637 }
1638
1639 #define MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz) \
1640         _MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz, struct iwl_mvm)
1641 #define MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz) \
1642         _MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz, struct iwl_mvm)
1643 #define MVM_DEBUGFS_ADD_FILE_ALIAS(alias, name, parent, mode) do {      \
1644                 if (!debugfs_create_file(alias, mode, parent, mvm,      \
1645                                          &iwl_dbgfs_##name##_ops))      \
1646                         goto err;                                       \
1647         } while (0)
1648 #define MVM_DEBUGFS_ADD_FILE(name, parent, mode) \
1649         MVM_DEBUGFS_ADD_FILE_ALIAS(#name, name, parent, mode)
1650
1651 #define MVM_DEBUGFS_WRITE_STA_FILE_OPS(name, bufsz) \
1652         _MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz, struct ieee80211_sta)
1653 #define MVM_DEBUGFS_READ_WRITE_STA_FILE_OPS(name, bufsz) \
1654         _MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz, struct ieee80211_sta)
1655
1656 #define MVM_DEBUGFS_ADD_STA_FILE_ALIAS(alias, name, parent, mode) do {  \
1657                 if (!debugfs_create_file(alias, mode, parent, sta,      \
1658                                          &iwl_dbgfs_##name##_ops))      \
1659                         goto err;                                       \
1660         } while (0)
1661 #define MVM_DEBUGFS_ADD_STA_FILE(name, parent, mode) \
1662         MVM_DEBUGFS_ADD_STA_FILE_ALIAS(#name, name, parent, mode)
1663
1664 static ssize_t
1665 iwl_dbgfs_prph_reg_read(struct file *file,
1666                         char __user *user_buf,
1667                         size_t count, loff_t *ppos)
1668 {
1669         struct iwl_mvm *mvm = file->private_data;
1670         int pos = 0;
1671         char buf[32];
1672         const size_t bufsz = sizeof(buf);
1673         int ret;
1674
1675         if (!mvm->dbgfs_prph_reg_addr)
1676                 return -EINVAL;
1677
1678         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PRPH_READ);
1679         if (ret)
1680                 return ret;
1681
1682         pos += scnprintf(buf + pos, bufsz - pos, "Reg 0x%x: (0x%x)\n",
1683                 mvm->dbgfs_prph_reg_addr,
1684                 iwl_read_prph(mvm->trans, mvm->dbgfs_prph_reg_addr));
1685
1686         iwl_mvm_unref(mvm, IWL_MVM_REF_PRPH_READ);
1687
1688         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1689 }
1690
1691 static ssize_t
1692 iwl_dbgfs_prph_reg_write(struct iwl_mvm *mvm, char *buf,
1693                          size_t count, loff_t *ppos)
1694 {
1695         u8 args;
1696         u32 value;
1697         int ret;
1698
1699         args = sscanf(buf, "%i %i", &mvm->dbgfs_prph_reg_addr, &value);
1700         /* if we only want to set the reg address - nothing more to do */
1701         if (args == 1)
1702                 goto out;
1703
1704         /* otherwise, make sure we have both address and value */
1705         if (args != 2)
1706                 return -EINVAL;
1707
1708         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PRPH_WRITE);
1709         if (ret)
1710                 return ret;
1711
1712         iwl_write_prph(mvm->trans, mvm->dbgfs_prph_reg_addr, value);
1713
1714         iwl_mvm_unref(mvm, IWL_MVM_REF_PRPH_WRITE);
1715 out:
1716         return count;
1717 }
1718
1719 static ssize_t
1720 iwl_dbgfs_send_echo_cmd_write(struct iwl_mvm *mvm, char *buf,
1721                               size_t count, loff_t *ppos)
1722 {
1723         int ret;
1724
1725         if (!iwl_mvm_firmware_running(mvm))
1726                 return -EIO;
1727
1728         mutex_lock(&mvm->mutex);
1729         ret = iwl_mvm_send_cmd_pdu(mvm, ECHO_CMD, 0, 0, NULL);
1730         mutex_unlock(&mvm->mutex);
1731
1732         return ret ?: count;
1733 }
1734
1735 static ssize_t
1736 iwl_dbgfs_uapsd_noagg_bssids_read(struct file *file, char __user *user_buf,
1737                                   size_t count, loff_t *ppos)
1738 {
1739         struct iwl_mvm *mvm = file->private_data;
1740         u8 buf[IWL_MVM_UAPSD_NOAGG_BSSIDS_NUM * ETH_ALEN * 3 + 1];
1741         unsigned int pos = 0;
1742         size_t bufsz = sizeof(buf);
1743         int i;
1744
1745         mutex_lock(&mvm->mutex);
1746
1747         for (i = 0; i < IWL_MVM_UAPSD_NOAGG_LIST_LEN; i++)
1748                 pos += scnprintf(buf + pos, bufsz - pos, "%pM\n",
1749                                  mvm->uapsd_noagg_bssids[i].addr);
1750
1751         mutex_unlock(&mvm->mutex);
1752
1753         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1754 }
1755
1756 MVM_DEBUGFS_READ_WRITE_FILE_OPS(prph_reg, 64);
1757
1758 /* Device wide debugfs entries */
1759 MVM_DEBUGFS_READ_FILE_OPS(ctdp_budget);
1760 MVM_DEBUGFS_WRITE_FILE_OPS(stop_ctdp, 8);
1761 MVM_DEBUGFS_WRITE_FILE_OPS(force_ctkill, 8);
1762 MVM_DEBUGFS_WRITE_FILE_OPS(tx_flush, 16);
1763 MVM_DEBUGFS_WRITE_FILE_OPS(sta_drain, 8);
1764 MVM_DEBUGFS_WRITE_FILE_OPS(send_echo_cmd, 8);
1765 MVM_DEBUGFS_READ_WRITE_FILE_OPS(sram, 64);
1766 MVM_DEBUGFS_READ_WRITE_FILE_OPS(set_nic_temperature, 64);
1767 MVM_DEBUGFS_READ_FILE_OPS(nic_temp);
1768 MVM_DEBUGFS_READ_FILE_OPS(stations);
1769 MVM_DEBUGFS_READ_FILE_OPS(rs_data);
1770 MVM_DEBUGFS_READ_FILE_OPS(bt_notif);
1771 MVM_DEBUGFS_READ_FILE_OPS(bt_cmd);
1772 MVM_DEBUGFS_READ_WRITE_FILE_OPS(disable_power_off, 64);
1773 MVM_DEBUGFS_READ_FILE_OPS(fw_rx_stats);
1774 MVM_DEBUGFS_READ_FILE_OPS(drv_rx_stats);
1775 MVM_DEBUGFS_READ_FILE_OPS(fw_ver);
1776 MVM_DEBUGFS_WRITE_FILE_OPS(fw_restart, 10);
1777 MVM_DEBUGFS_WRITE_FILE_OPS(fw_nmi, 10);
1778 MVM_DEBUGFS_WRITE_FILE_OPS(bt_tx_prio, 10);
1779 MVM_DEBUGFS_WRITE_FILE_OPS(bt_force_ant, 10);
1780 MVM_DEBUGFS_READ_WRITE_FILE_OPS(scan_ant_rxchain, 8);
1781 MVM_DEBUGFS_READ_WRITE_FILE_OPS(d0i3_refs, 8);
1782 MVM_DEBUGFS_READ_WRITE_FILE_OPS(fw_dbg_conf, 8);
1783 MVM_DEBUGFS_WRITE_FILE_OPS(fw_dbg_collect, 64);
1784 MVM_DEBUGFS_WRITE_FILE_OPS(cont_recording, 8);
1785 MVM_DEBUGFS_WRITE_FILE_OPS(max_amsdu_len, 8);
1786 MVM_DEBUGFS_WRITE_FILE_OPS(indirection_tbl,
1787                            (IWL_RSS_INDIRECTION_TABLE_SIZE * 2));
1788 MVM_DEBUGFS_WRITE_FILE_OPS(inject_packet, 512);
1789
1790 MVM_DEBUGFS_READ_FILE_OPS(uapsd_noagg_bssids);
1791
1792 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1793 MVM_DEBUGFS_READ_WRITE_FILE_OPS(bcast_filters, 256);
1794 MVM_DEBUGFS_READ_WRITE_FILE_OPS(bcast_filters_macs, 256);
1795 #endif
1796
1797 #ifdef CONFIG_PM_SLEEP
1798 MVM_DEBUGFS_READ_WRITE_FILE_OPS(d3_sram, 8);
1799 #endif
1800 #ifdef CONFIG_ACPI
1801 MVM_DEBUGFS_READ_FILE_OPS(sar_geo_profile);
1802 #endif
1803
1804 static ssize_t iwl_dbgfs_mem_read(struct file *file, char __user *user_buf,
1805                                   size_t count, loff_t *ppos)
1806 {
1807         struct iwl_mvm *mvm = file->private_data;
1808         struct iwl_dbg_mem_access_cmd cmd = {};
1809         struct iwl_dbg_mem_access_rsp *rsp;
1810         struct iwl_host_cmd hcmd = {
1811                 .flags = CMD_WANT_SKB | CMD_SEND_IN_RFKILL,
1812                 .data = { &cmd, },
1813                 .len = { sizeof(cmd) },
1814         };
1815         size_t delta;
1816         ssize_t ret, len;
1817
1818         if (!iwl_mvm_firmware_running(mvm))
1819                 return -EIO;
1820
1821         hcmd.id = iwl_cmd_id(*ppos >> 24 ? UMAC_RD_WR : LMAC_RD_WR,
1822                              DEBUG_GROUP, 0);
1823         cmd.op = cpu_to_le32(DEBUG_MEM_OP_READ);
1824
1825         /* Take care of alignment of both the position and the length */
1826         delta = *ppos & 0x3;
1827         cmd.addr = cpu_to_le32(*ppos - delta);
1828         cmd.len = cpu_to_le32(min(ALIGN(count + delta, 4) / 4,
1829                                   (size_t)DEBUG_MEM_MAX_SIZE_DWORDS));
1830
1831         mutex_lock(&mvm->mutex);
1832         ret = iwl_mvm_send_cmd(mvm, &hcmd);
1833         mutex_unlock(&mvm->mutex);
1834
1835         if (ret < 0)
1836                 return ret;
1837
1838         rsp = (void *)hcmd.resp_pkt->data;
1839         if (le32_to_cpu(rsp->status) != DEBUG_MEM_STATUS_SUCCESS) {
1840                 ret = -ENXIO;
1841                 goto out;
1842         }
1843
1844         len = min((size_t)le32_to_cpu(rsp->len) << 2,
1845                   iwl_rx_packet_payload_len(hcmd.resp_pkt) - sizeof(*rsp));
1846         len = min(len - delta, count);
1847         if (len < 0) {
1848                 ret = -EFAULT;
1849                 goto out;
1850         }
1851
1852         ret = len - copy_to_user(user_buf, (void *)rsp->data + delta, len);
1853         *ppos += ret;
1854
1855 out:
1856         iwl_free_resp(&hcmd);
1857         return ret;
1858 }
1859
1860 static ssize_t iwl_dbgfs_mem_write(struct file *file,
1861                                    const char __user *user_buf, size_t count,
1862                                    loff_t *ppos)
1863 {
1864         struct iwl_mvm *mvm = file->private_data;
1865         struct iwl_dbg_mem_access_cmd *cmd;
1866         struct iwl_dbg_mem_access_rsp *rsp;
1867         struct iwl_host_cmd hcmd = {};
1868         size_t cmd_size;
1869         size_t data_size;
1870         u32 op, len;
1871         ssize_t ret;
1872
1873         if (!iwl_mvm_firmware_running(mvm))
1874                 return -EIO;
1875
1876         hcmd.id = iwl_cmd_id(*ppos >> 24 ? UMAC_RD_WR : LMAC_RD_WR,
1877                              DEBUG_GROUP, 0);
1878
1879         if (*ppos & 0x3 || count < 4) {
1880                 op = DEBUG_MEM_OP_WRITE_BYTES;
1881                 len = min(count, (size_t)(4 - (*ppos & 0x3)));
1882                 data_size = len;
1883         } else {
1884                 op = DEBUG_MEM_OP_WRITE;
1885                 len = min(count >> 2, (size_t)DEBUG_MEM_MAX_SIZE_DWORDS);
1886                 data_size = len << 2;
1887         }
1888
1889         cmd_size = sizeof(*cmd) + ALIGN(data_size, 4);
1890         cmd = kzalloc(cmd_size, GFP_KERNEL);
1891         if (!cmd)
1892                 return -ENOMEM;
1893
1894         cmd->op = cpu_to_le32(op);
1895         cmd->len = cpu_to_le32(len);
1896         cmd->addr = cpu_to_le32(*ppos);
1897         if (copy_from_user((void *)cmd->data, user_buf, data_size)) {
1898                 kfree(cmd);
1899                 return -EFAULT;
1900         }
1901
1902         hcmd.flags = CMD_WANT_SKB | CMD_SEND_IN_RFKILL,
1903         hcmd.data[0] = (void *)cmd;
1904         hcmd.len[0] = cmd_size;
1905
1906         mutex_lock(&mvm->mutex);
1907         ret = iwl_mvm_send_cmd(mvm, &hcmd);
1908         mutex_unlock(&mvm->mutex);
1909
1910         kfree(cmd);
1911
1912         if (ret < 0)
1913                 return ret;
1914
1915         rsp = (void *)hcmd.resp_pkt->data;
1916         if (rsp->status != DEBUG_MEM_STATUS_SUCCESS) {
1917                 ret = -ENXIO;
1918                 goto out;
1919         }
1920
1921         ret = data_size;
1922         *ppos += ret;
1923
1924 out:
1925         iwl_free_resp(&hcmd);
1926         return ret;
1927 }
1928
1929 static const struct file_operations iwl_dbgfs_mem_ops = {
1930         .read = iwl_dbgfs_mem_read,
1931         .write = iwl_dbgfs_mem_write,
1932         .open = simple_open,
1933         .llseek = default_llseek,
1934 };
1935
1936 void iwl_mvm_sta_add_debugfs(struct ieee80211_hw *hw,
1937                              struct ieee80211_vif *vif,
1938                              struct ieee80211_sta *sta,
1939                              struct dentry *dir)
1940 {
1941         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1942
1943         if (iwl_mvm_has_tlc_offload(mvm))
1944                 MVM_DEBUGFS_ADD_STA_FILE(rs_data, dir, 0400);
1945
1946         return;
1947 err:
1948         IWL_ERR(mvm, "Can't create the mvm station debugfs entry\n");
1949 }
1950
1951 int iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir)
1952 {
1953         struct dentry *bcast_dir __maybe_unused;
1954         char buf[100];
1955
1956         spin_lock_init(&mvm->drv_stats_lock);
1957
1958         mvm->debugfs_dir = dbgfs_dir;
1959
1960         MVM_DEBUGFS_ADD_FILE(tx_flush, mvm->debugfs_dir, 0200);
1961         MVM_DEBUGFS_ADD_FILE(sta_drain, mvm->debugfs_dir, 0200);
1962         MVM_DEBUGFS_ADD_FILE(sram, mvm->debugfs_dir, 0600);
1963         MVM_DEBUGFS_ADD_FILE(set_nic_temperature, mvm->debugfs_dir, 0600);
1964         MVM_DEBUGFS_ADD_FILE(nic_temp, dbgfs_dir, 0400);
1965         MVM_DEBUGFS_ADD_FILE(ctdp_budget, dbgfs_dir, 0400);
1966         MVM_DEBUGFS_ADD_FILE(stop_ctdp, dbgfs_dir, 0200);
1967         MVM_DEBUGFS_ADD_FILE(force_ctkill, dbgfs_dir, 0200);
1968         MVM_DEBUGFS_ADD_FILE(stations, dbgfs_dir, 0400);
1969         MVM_DEBUGFS_ADD_FILE(bt_notif, dbgfs_dir, 0400);
1970         MVM_DEBUGFS_ADD_FILE(bt_cmd, dbgfs_dir, 0400);
1971         MVM_DEBUGFS_ADD_FILE(disable_power_off, mvm->debugfs_dir, 0600);
1972         MVM_DEBUGFS_ADD_FILE(fw_ver, mvm->debugfs_dir, 0400);
1973         MVM_DEBUGFS_ADD_FILE(fw_rx_stats, mvm->debugfs_dir, 0400);
1974         MVM_DEBUGFS_ADD_FILE(drv_rx_stats, mvm->debugfs_dir, 0400);
1975         MVM_DEBUGFS_ADD_FILE(fw_restart, mvm->debugfs_dir, 0200);
1976         MVM_DEBUGFS_ADD_FILE(fw_nmi, mvm->debugfs_dir, 0200);
1977         MVM_DEBUGFS_ADD_FILE(bt_tx_prio, mvm->debugfs_dir, 0200);
1978         MVM_DEBUGFS_ADD_FILE(bt_force_ant, mvm->debugfs_dir, 0200);
1979         MVM_DEBUGFS_ADD_FILE(scan_ant_rxchain, mvm->debugfs_dir, 0600);
1980         MVM_DEBUGFS_ADD_FILE(prph_reg, mvm->debugfs_dir, 0600);
1981         MVM_DEBUGFS_ADD_FILE(d0i3_refs, mvm->debugfs_dir, 0600);
1982         MVM_DEBUGFS_ADD_FILE(fw_dbg_conf, mvm->debugfs_dir, 0600);
1983         MVM_DEBUGFS_ADD_FILE(fw_dbg_collect, mvm->debugfs_dir, 0200);
1984         MVM_DEBUGFS_ADD_FILE(max_amsdu_len, mvm->debugfs_dir, 0200);
1985         MVM_DEBUGFS_ADD_FILE(send_echo_cmd, mvm->debugfs_dir, 0200);
1986         MVM_DEBUGFS_ADD_FILE(cont_recording, mvm->debugfs_dir, 0200);
1987         MVM_DEBUGFS_ADD_FILE(indirection_tbl, mvm->debugfs_dir, 0200);
1988         MVM_DEBUGFS_ADD_FILE(inject_packet, mvm->debugfs_dir, 0200);
1989 #ifdef CONFIG_ACPI
1990         MVM_DEBUGFS_ADD_FILE(sar_geo_profile, dbgfs_dir, 0400);
1991 #endif
1992
1993         if (!debugfs_create_bool("enable_scan_iteration_notif",
1994                                  0600,
1995                                  mvm->debugfs_dir,
1996                                  &mvm->scan_iter_notif_enabled))
1997                 goto err;
1998         if (!debugfs_create_bool("drop_bcn_ap_mode", 0600,
1999                                  mvm->debugfs_dir, &mvm->drop_bcn_ap_mode))
2000                 goto err;
2001
2002         MVM_DEBUGFS_ADD_FILE(uapsd_noagg_bssids, mvm->debugfs_dir, S_IRUSR);
2003
2004 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
2005         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING) {
2006                 bcast_dir = debugfs_create_dir("bcast_filtering",
2007                                                mvm->debugfs_dir);
2008                 if (!bcast_dir)
2009                         goto err;
2010
2011                 if (!debugfs_create_bool("override", 0600,
2012                                          bcast_dir,
2013                                          &mvm->dbgfs_bcast_filtering.override))
2014                         goto err;
2015
2016                 MVM_DEBUGFS_ADD_FILE_ALIAS("filters", bcast_filters,
2017                                            bcast_dir, 0600);
2018                 MVM_DEBUGFS_ADD_FILE_ALIAS("macs", bcast_filters_macs,
2019                                            bcast_dir, 0600);
2020         }
2021 #endif
2022
2023 #ifdef CONFIG_PM_SLEEP
2024         MVM_DEBUGFS_ADD_FILE(d3_sram, mvm->debugfs_dir, 0600);
2025         MVM_DEBUGFS_ADD_FILE(d3_test, mvm->debugfs_dir, 0400);
2026         if (!debugfs_create_bool("d3_wake_sysassert", 0600,
2027                                  mvm->debugfs_dir, &mvm->d3_wake_sysassert))
2028                 goto err;
2029         if (!debugfs_create_u32("last_netdetect_scans", 0400,
2030                                 mvm->debugfs_dir, &mvm->last_netdetect_scans))
2031                 goto err;
2032 #endif
2033
2034         if (!debugfs_create_u8("ps_disabled", 0400,
2035                                mvm->debugfs_dir, &mvm->ps_disabled))
2036                 goto err;
2037         if (!debugfs_create_blob("nvm_hw", 0400,
2038                                  mvm->debugfs_dir, &mvm->nvm_hw_blob))
2039                 goto err;
2040         if (!debugfs_create_blob("nvm_sw", 0400,
2041                                  mvm->debugfs_dir, &mvm->nvm_sw_blob))
2042                 goto err;
2043         if (!debugfs_create_blob("nvm_calib", 0400,
2044                                  mvm->debugfs_dir, &mvm->nvm_calib_blob))
2045                 goto err;
2046         if (!debugfs_create_blob("nvm_prod", 0400,
2047                                  mvm->debugfs_dir, &mvm->nvm_prod_blob))
2048                 goto err;
2049         if (!debugfs_create_blob("nvm_phy_sku", 0400,
2050                                  mvm->debugfs_dir, &mvm->nvm_phy_sku_blob))
2051                 goto err;
2052
2053         debugfs_create_file("mem", 0600, dbgfs_dir, mvm, &iwl_dbgfs_mem_ops);
2054
2055         /*
2056          * Create a symlink with mac80211. It will be removed when mac80211
2057          * exists (before the opmode exists which removes the target.)
2058          */
2059         snprintf(buf, 100, "../../%pd2", dbgfs_dir->d_parent);
2060         if (!debugfs_create_symlink("iwlwifi", mvm->hw->wiphy->debugfsdir, buf))
2061                 goto err;
2062
2063         return 0;
2064 err:
2065         IWL_ERR(mvm, "Can't create the mvm debugfs directory\n");
2066         return -ENOMEM;
2067 }