drivers/net/wireless/ath/ath10k/debug.c

   1 /*
   2  * Copyright (c) 2005-2011 Atheros Communications Inc.
   3  * Copyright (c) 2011-2013 Qualcomm Atheros, Inc.
   4  *
   5  * Permission to use, copy, modify, and/or distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 #include <linux/module.h>
  19 #include <linux/debugfs.h>
  20 #include <linux/version.h>
  21 #include <linux/vermagic.h>
  22 #include <linux/vmalloc.h>
  23
  24 #include "core.h"
  25 #include "debug.h"
  26 #include "hif.h"
  27
  28 /* ms */
  29 #define ATH10K_DEBUG_HTT_STATS_INTERVAL 1000
  30
  31 #define ATH10K_FW_CRASH_DUMP_VERSION 1
  32
  33 /**
  34  * enum ath10k_fw_crash_dump_type - types of data in the dump file
  35  * @ATH10K_FW_CRASH_DUMP_REGDUMP: Register crash dump in binary format
  36  */
  37 enum ath10k_fw_crash_dump_type {
  38         ATH10K_FW_CRASH_DUMP_REGISTERS = 0,
  39
  40         ATH10K_FW_CRASH_DUMP_MAX,
  41 };
  42
  43 struct ath10k_tlv_dump_data {
  44         /* see ath10k_fw_crash_dump_type above */
  45         __le32 type;
  46
  47         /* in bytes */
  48         __le32 tlv_len;
  49
  50         /* pad to 32-bit boundaries as needed */
  51         u8 tlv_data[];
  52 } __packed;
  53
  54 struct ath10k_dump_file_data {
  55         /* dump file information */
  56
  57         /* "ATH10K-FW-DUMP" */
  58         char df_magic[16];
  59
  60         __le32 len;
  61
  62         /* file dump version */
  63         __le32 version;
  64
  65         /* some info we can get from ath10k struct that might help */
  66
  67         u8 uuid[16];
  68
  69         __le32 chip_id;
  70
  71         /* 0 for now, in place for later hardware */
  72         __le32 bus_type;
  73
  74         __le32 target_version;
  75         __le32 fw_version_major;
  76         __le32 fw_version_minor;
  77         __le32 fw_version_release;
  78         __le32 fw_version_build;
  79         __le32 phy_capability;
  80         __le32 hw_min_tx_power;
  81         __le32 hw_max_tx_power;
  82         __le32 ht_cap_info;
  83         __le32 vht_cap_info;
  84         __le32 num_rf_chains;
  85
  86         /* firmware version string */
  87         char fw_ver[ETHTOOL_FWVERS_LEN];
  88
  89         /* Kernel related information */
  90
  91         /* time-of-day stamp */
  92         __le64 tv_sec;
  93
  94         /* time-of-day stamp, nano-seconds */
  95         __le64 tv_nsec;
  96
  97         /* LINUX_VERSION_CODE */
  98         __le32 kernel_ver_code;
  99
 100         /* VERMAGIC_STRING */
 101         char kernel_ver[64];
 102
 103         /* room for growth w/out changing binary format */
 104         u8 unused[128];
 105
 106         /* struct ath10k_tlv_dump_data + more */
 107         u8 data[0];
 108 } __packed;
 109
 110 void ath10k_info(struct ath10k *ar, const char *fmt, ...)
 111 {
 112         struct va_format vaf = {
 113                 .fmt = fmt,
 114         };
 115         va_list args;
 116
 117         va_start(args, fmt);
 118         vaf.va = &args;
 119         dev_info(ar->dev, "%pV", &vaf);
 120         trace_ath10k_log_info(ar, &vaf);
 121         va_end(args);
 122 }
 123 EXPORT_SYMBOL(ath10k_info);
 124
 125 void ath10k_print_driver_info(struct ath10k *ar)
 126 {
 127         ath10k_info(ar, "%s (0x%08x, 0x%08x) fw %s api %d htt %d.%d wmi %d.%d.%d.%d\n",
 128                     ar->hw_params.name,
 129                     ar->target_version,
 130                     ar->chip_id,
 131                     ar->hw->wiphy->fw_version,
 132                     ar->fw_api,
 133                     ar->htt.target_version_major,
 134                     ar->htt.target_version_minor,
 135                     ar->fw_version_major,
 136                     ar->fw_version_minor,
 137                     ar->fw_version_release,
 138                     ar->fw_version_build);
 139         ath10k_info(ar, "debug %d debugfs %d tracing %d dfs %d testmode %d\n",
 140                     config_enabled(CONFIG_ATH10K_DEBUG),
 141                     config_enabled(CONFIG_ATH10K_DEBUGFS),
 142                     config_enabled(CONFIG_ATH10K_TRACING),
 143                     config_enabled(CONFIG_ATH10K_DFS_CERTIFIED),
 144                     config_enabled(CONFIG_NL80211_TESTMODE));
 145 }
 146 EXPORT_SYMBOL(ath10k_print_driver_info);
 147
 148 void ath10k_err(struct ath10k *ar, const char *fmt, ...)
 149 {
 150         struct va_format vaf = {
 151                 .fmt = fmt,
 152         };
 153         va_list args;
 154
 155         va_start(args, fmt);
 156         vaf.va = &args;
 157         dev_err(ar->dev, "%pV", &vaf);
 158         trace_ath10k_log_err(ar, &vaf);
 159         va_end(args);
 160 }
 161 EXPORT_SYMBOL(ath10k_err);
 162
 163 void ath10k_warn(struct ath10k *ar, const char *fmt, ...)
 164 {
 165         struct va_format vaf = {
 166                 .fmt = fmt,
 167         };
 168         va_list args;
 169
 170         va_start(args, fmt);
 171         vaf.va = &args;
 172         dev_warn_ratelimited(ar->dev, "%pV", &vaf);
 173         trace_ath10k_log_warn(ar, &vaf);
 174
 175         va_end(args);
 176 }
 177 EXPORT_SYMBOL(ath10k_warn);
 178
 179 #ifdef CONFIG_ATH10K_DEBUGFS
 180
 181 void ath10k_debug_read_service_map(struct ath10k *ar,
 182                                    const void *service_map,
 183                                    size_t map_size)
 184 {
 185         memcpy(ar->debug.wmi_service_bitmap, service_map, map_size);
 186 }
 187
 188 static ssize_t ath10k_read_wmi_services(struct file *file,
 189                                         char __user *user_buf,
 190                                         size_t count, loff_t *ppos)
 191 {
 192         struct ath10k *ar = file->private_data;
 193         char *buf;
 194         unsigned int len = 0, buf_len = 4096;
 195         const char *name;
 196         ssize_t ret_cnt;
 197         bool enabled;
 198         int i;
 199
 200         buf = kzalloc(buf_len, GFP_KERNEL);
 201         if (!buf)
 202                 return -ENOMEM;
 203
 204         mutex_lock(&ar->conf_mutex);
 205
 206         if (len > buf_len)
 207                 len = buf_len;
 208
 209         for (i = 0; i < WMI_SERVICE_MAX; i++) {
 210                 enabled = test_bit(i, ar->debug.wmi_service_bitmap);
 211                 name = wmi_service_name(i);
 212
 213                 if (!name) {
 214                         if (enabled)
 215                                 len += scnprintf(buf + len, buf_len - len,
 216                                                  "%-40s %s (bit %d)\n",
 217                                                  "unknown", "enabled", i);
 218
 219                         continue;
 220                 }
 221
 222                 len += scnprintf(buf + len, buf_len - len,
 223                                  "%-40s %s\n",
 224                                  name, enabled ? "enabled" : "-");
 225         }
 226
 227         ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
 228
 229         mutex_unlock(&ar->conf_mutex);
 230
 231         kfree(buf);
 232         return ret_cnt;
 233 }
 234
 235 static const struct file_operations fops_wmi_services = {
 236         .read = ath10k_read_wmi_services,
 237         .open = simple_open,
 238         .owner = THIS_MODULE,
 239         .llseek = default_llseek,
 240 };
 241
 242 static void ath10k_debug_fw_stats_pdevs_free(struct list_head *head)
 243 {
 244         struct ath10k_fw_stats_pdev *i, *tmp;
 245
 246         list_for_each_entry_safe(i, tmp, head, list) {
 247                 list_del(&i->list);
 248                 kfree(i);
 249         }
 250 }
 251
 252 static void ath10k_debug_fw_stats_peers_free(struct list_head *head)
 253 {
 254         struct ath10k_fw_stats_peer *i, *tmp;
 255
 256         list_for_each_entry_safe(i, tmp, head, list) {
 257                 list_del(&i->list);
 258                 kfree(i);
 259         }
 260 }
 261
 262 static void ath10k_debug_fw_stats_reset(struct ath10k *ar)
 263 {
 264         spin_lock_bh(&ar->data_lock);
 265         ar->debug.fw_stats_done = false;
 266         ath10k_debug_fw_stats_pdevs_free(&ar->debug.fw_stats.pdevs);
 267         ath10k_debug_fw_stats_peers_free(&ar->debug.fw_stats.peers);
 268         spin_unlock_bh(&ar->data_lock);
 269 }
 270
 271 static size_t ath10k_debug_fw_stats_num_peers(struct list_head *head)
 272 {
 273         struct ath10k_fw_stats_peer *i;
 274         size_t num = 0;
 275
 276         list_for_each_entry(i, head, list)
 277                 ++num;
 278
 279         return num;
 280 }
 281
 282 void ath10k_debug_fw_stats_process(struct ath10k *ar, struct sk_buff *skb)
 283 {
 284         struct ath10k_fw_stats stats = {};
 285         bool is_start, is_started, is_end;
 286         size_t num_peers;
 287         int ret;
 288
 289         INIT_LIST_HEAD(&stats.pdevs);
 290         INIT_LIST_HEAD(&stats.peers);
 291
 292         spin_lock_bh(&ar->data_lock);
 293         ret = ath10k_wmi_pull_fw_stats(ar, skb, &stats);
 294         if (ret) {
 295                 ath10k_warn(ar, "failed to pull fw stats: %d\n", ret);
 296                 goto unlock;
 297         }
 298
 299         /* Stat data may exceed htc-wmi buffer limit. In such case firmware
 300          * splits the stats data and delivers it in a ping-pong fashion of
 301          * request cmd-update event.
 302          *
 303          * However there is no explicit end-of-data. Instead start-of-data is
 304          * used as an implicit one. This works as follows:
 305          *  a) discard stat update events until one with pdev stats is
 306          *     delivered - this skips session started at end of (b)
 307          *  b) consume stat update events until another one with pdev stats is
 308          *     delivered which is treated as end-of-data and is itself discarded
 309          */
 310
 311         if (ar->debug.fw_stats_done) {
 312                 ath10k_warn(ar, "received unsolicited stats update event\n");
 313                 goto free;
 314         }
 315
 316         num_peers = ath10k_debug_fw_stats_num_peers(&ar->debug.fw_stats.peers);
 317         is_start = (list_empty(&ar->debug.fw_stats.pdevs) &&
 318                     !list_empty(&stats.pdevs));
 319         is_end = (!list_empty(&ar->debug.fw_stats.pdevs) &&
 320                   !list_empty(&stats.pdevs));
 321
 322         if (is_start)
 323                 list_splice_tail_init(&stats.pdevs, &ar->debug.fw_stats.pdevs);
 324
 325         if (is_end)
 326                 ar->debug.fw_stats_done = true;
 327
 328         is_started = !list_empty(&ar->debug.fw_stats.pdevs);
 329
 330         if (is_started && !is_end) {
 331                 if (num_peers >= ATH10K_MAX_NUM_PEER_IDS) {
 332                         /* Although this is unlikely impose a sane limit to
 333                          * prevent firmware from DoS-ing the host.
 334                          */
 335                         ath10k_warn(ar, "dropping fw peer stats\n");
 336                         goto free;
 337                 }
 338
 339                 list_splice_tail_init(&stats.peers, &ar->debug.fw_stats.peers);
 340         }
 341
 342         complete(&ar->debug.fw_stats_complete);
 343
 344 free:
 345         /* In some cases lists have been spliced and cleared. Free up
 346          * resources if that is not the case.
 347          */
 348         ath10k_debug_fw_stats_pdevs_free(&stats.pdevs);
 349         ath10k_debug_fw_stats_peers_free(&stats.peers);
 350
 351 unlock:
 352         spin_unlock_bh(&ar->data_lock);
 353 }
 354
 355 static int ath10k_debug_fw_stats_request(struct ath10k *ar)
 356 {
 357         unsigned long timeout;
 358         int ret;
 359
 360         lockdep_assert_held(&ar->conf_mutex);
 361
 362         timeout = jiffies + msecs_to_jiffies(1*HZ);
 363
 364         ath10k_debug_fw_stats_reset(ar);
 365
 366         for (;;) {
 367                 if (time_after(jiffies, timeout))
 368                         return -ETIMEDOUT;
 369
 370                 reinit_completion(&ar->debug.fw_stats_complete);
 371
 372                 ret = ath10k_wmi_request_stats(ar, WMI_REQUEST_PEER_STAT);
 373                 if (ret) {
 374                         ath10k_warn(ar, "could not request stats (%d)\n", ret);
 375                         return ret;
 376                 }
 377
 378                 ret = wait_for_completion_timeout(&ar->debug.fw_stats_complete,
 379                                                   1*HZ);
 380                 if (ret <= 0)
 381                         return -ETIMEDOUT;
 382
 383                 spin_lock_bh(&ar->data_lock);
 384                 if (ar->debug.fw_stats_done) {
 385                         spin_unlock_bh(&ar->data_lock);
 386                         break;
 387                 }
 388                 spin_unlock_bh(&ar->data_lock);
 389         }
 390
 391         return 0;
 392 }
 393
 394 /* FIXME: How to calculate the buffer size sanely? */
 395 #define ATH10K_FW_STATS_BUF_SIZE (1024*1024)
 396
 397 static void ath10k_fw_stats_fill(struct ath10k *ar,
 398                                  struct ath10k_fw_stats *fw_stats,
 399                                  char *buf)
 400 {
 401         unsigned int len = 0;
 402         unsigned int buf_len = ATH10K_FW_STATS_BUF_SIZE;
 403         const struct ath10k_fw_stats_pdev *pdev;
 404         const struct ath10k_fw_stats_peer *peer;
 405         size_t num_peers;
 406
 407         spin_lock_bh(&ar->data_lock);
 408
 409         pdev = list_first_entry_or_null(&fw_stats->pdevs,
 410                                         struct ath10k_fw_stats_pdev, list);
 411         if (!pdev) {
 412                 ath10k_warn(ar, "failed to get pdev stats\n");
 413                 goto unlock;
 414         }
 415
 416         num_peers = ath10k_debug_fw_stats_num_peers(&fw_stats->peers);
 417
 418         len += scnprintf(buf + len, buf_len - len, "\n");
 419         len += scnprintf(buf + len, buf_len - len, "%30s\n",
 420                          "ath10k PDEV stats");
 421         len += scnprintf(buf + len, buf_len - len, "%30s\n\n",
 422                                  "=================");
 423
 424         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 425                          "Channel noise floor", pdev->ch_noise_floor);
 426         len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
 427                          "Channel TX power", pdev->chan_tx_power);
 428         len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
 429                          "TX frame count", pdev->tx_frame_count);
 430         len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
 431                          "RX frame count", pdev->rx_frame_count);
 432         len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
 433                          "RX clear count", pdev->rx_clear_count);
 434         len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
 435                          "Cycle count", pdev->cycle_count);
 436         len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
 437                          "PHY error count", pdev->phy_err_count);
 438         len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
 439                          "RTS bad count", pdev->rts_bad);
 440         len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
 441                          "RTS good count", pdev->rts_good);
 442         len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
 443                          "FCS bad count", pdev->fcs_bad);
 444         len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
 445                          "No beacon count", pdev->no_beacons);
 446         len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
 447                          "MIB int count", pdev->mib_int_count);
 448
 449         len += scnprintf(buf + len, buf_len - len, "\n");
 450         len += scnprintf(buf + len, buf_len - len, "%30s\n",
 451                          "ath10k PDEV TX stats");
 452         len += scnprintf(buf + len, buf_len - len, "%30s\n\n",
 453                                  "=================");
 454
 455         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 456                          "HTT cookies queued", pdev->comp_queued);
 457         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 458                          "HTT cookies disp.", pdev->comp_delivered);
 459         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 460                          "MSDU queued", pdev->msdu_enqued);
 461         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 462                          "MPDU queued", pdev->mpdu_enqued);
 463         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 464                          "MSDUs dropped", pdev->wmm_drop);
 465         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 466                          "Local enqued", pdev->local_enqued);
 467         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 468                          "Local freed", pdev->local_freed);
 469         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 470                          "HW queued", pdev->hw_queued);
 471         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 472                          "PPDUs reaped", pdev->hw_reaped);
 473         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 474                          "Num underruns", pdev->underrun);
 475         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 476                          "PPDUs cleaned", pdev->tx_abort);
 477         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 478                          "MPDUs requed", pdev->mpdus_requed);
 479         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 480                          "Excessive retries", pdev->tx_ko);
 481         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 482                          "HW rate", pdev->data_rc);
 483         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 484                          "Sched self tiggers", pdev->self_triggers);
 485         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 486                          "Dropped due to SW retries",
 487                          pdev->sw_retry_failure);
 488         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 489                          "Illegal rate phy errors",
 490                          pdev->illgl_rate_phy_err);
 491         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 492                          "Pdev continous xretry", pdev->pdev_cont_xretry);
 493         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 494                          "TX timeout", pdev->pdev_tx_timeout);
 495         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 496                          "PDEV resets", pdev->pdev_resets);
 497         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 498                          "PHY underrun", pdev->phy_underrun);
 499         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 500                          "MPDU is more than txop limit", pdev->txop_ovf);
 501
 502         len += scnprintf(buf + len, buf_len - len, "\n");
 503         len += scnprintf(buf + len, buf_len - len, "%30s\n",
 504                          "ath10k PDEV RX stats");
 505         len += scnprintf(buf + len, buf_len - len, "%30s\n\n",
 506                                  "=================");
 507
 508         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 509                          "Mid PPDU route change",
 510                          pdev->mid_ppdu_route_change);
 511         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 512                          "Tot. number of statuses", pdev->status_rcvd);
 513         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 514                          "Extra frags on rings 0", pdev->r0_frags);
 515         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 516                          "Extra frags on rings 1", pdev->r1_frags);
 517         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 518                          "Extra frags on rings 2", pdev->r2_frags);
 519         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 520                          "Extra frags on rings 3", pdev->r3_frags);
 521         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 522                          "MSDUs delivered to HTT", pdev->htt_msdus);
 523         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 524                          "MPDUs delivered to HTT", pdev->htt_mpdus);
 525         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 526                          "MSDUs delivered to stack", pdev->loc_msdus);
 527         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 528                          "MPDUs delivered to stack", pdev->loc_mpdus);
 529         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 530                          "Oversized AMSUs", pdev->oversize_amsdu);
 531         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 532                          "PHY errors", pdev->phy_errs);
 533         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 534                          "PHY errors drops", pdev->phy_err_drop);
 535         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 536                          "MPDU errors (FCS, MIC, ENC)", pdev->mpdu_errs);
 537
 538         len += scnprintf(buf + len, buf_len - len, "\n");
 539         len += scnprintf(buf + len, buf_len - len, "%30s (%zu)\n",
 540                          "ath10k PEER stats", num_peers);
 541         len += scnprintf(buf + len, buf_len - len, "%30s\n\n",
 542                                  "=================");
 543
 544         list_for_each_entry(peer, &fw_stats->peers, list) {
 545                 len += scnprintf(buf + len, buf_len - len, "%30s %pM\n",
 546                                  "Peer MAC address", peer->peer_macaddr);
 547                 len += scnprintf(buf + len, buf_len - len, "%30s %u\n",
 548                                  "Peer RSSI", peer->peer_rssi);
 549                 len += scnprintf(buf + len, buf_len - len, "%30s %u\n",
 550                                  "Peer TX rate", peer->peer_tx_rate);
 551                 len += scnprintf(buf + len, buf_len - len, "%30s %u\n",
 552                                  "Peer RX rate", peer->peer_rx_rate);
 553                 len += scnprintf(buf + len, buf_len - len, "\n");
 554         }
 555
 556 unlock:
 557         spin_unlock_bh(&ar->data_lock);
 558
 559         if (len >= buf_len)
 560                 buf[len - 1] = 0;
 561         else
 562                 buf[len] = 0;
 563 }
 564
 565 static int ath10k_fw_stats_open(struct inode *inode, struct file *file)
 566 {
 567         struct ath10k *ar = inode->i_private;
 568         void *buf = NULL;
 569         int ret;
 570
 571         mutex_lock(&ar->conf_mutex);
 572
 573         if (ar->state != ATH10K_STATE_ON) {
 574                 ret = -ENETDOWN;
 575                 goto err_unlock;
 576         }
 577
 578         buf = vmalloc(ATH10K_FW_STATS_BUF_SIZE);
 579         if (!buf) {
 580                 ret = -ENOMEM;
 581                 goto err_unlock;
 582         }
 583
 584         ret = ath10k_debug_fw_stats_request(ar);
 585         if (ret) {
 586                 ath10k_warn(ar, "failed to request fw stats: %d\n", ret);
 587                 goto err_free;
 588         }
 589
 590         ath10k_fw_stats_fill(ar, &ar->debug.fw_stats, buf);
 591         file->private_data = buf;
 592
 593         mutex_unlock(&ar->conf_mutex);
 594         return 0;
 595
 596 err_free:
 597         vfree(buf);
 598
 599 err_unlock:
 600         mutex_unlock(&ar->conf_mutex);
 601         return ret;
 602 }
 603
 604 static int ath10k_fw_stats_release(struct inode *inode, struct file *file)
 605 {
 606         vfree(file->private_data);
 607
 608         return 0;
 609 }
 610
 611 static ssize_t ath10k_fw_stats_read(struct file *file, char __user *user_buf,
 612                                     size_t count, loff_t *ppos)
 613 {
 614         const char *buf = file->private_data;
 615         unsigned int len = strlen(buf);
 616
 617         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 618 }
 619
 620 static const struct file_operations fops_fw_stats = {
 621         .open = ath10k_fw_stats_open,
 622         .release = ath10k_fw_stats_release,
 623         .read = ath10k_fw_stats_read,
 624         .owner = THIS_MODULE,
 625         .llseek = default_llseek,
 626 };
 627
 628 static ssize_t ath10k_debug_fw_reset_stats_read(struct file *file,
 629                                                 char __user *user_buf,
 630                                                 size_t count, loff_t *ppos)
 631 {
 632         struct ath10k *ar = file->private_data;
 633         int ret, len, buf_len;
 634         char *buf;
 635
 636         buf_len = 500;
 637         buf = kmalloc(buf_len, GFP_KERNEL);
 638         if (!buf)
 639                 return -ENOMEM;
 640
 641         spin_lock_bh(&ar->data_lock);
 642
 643         len = 0;
 644         len += scnprintf(buf + len, buf_len - len,
 645                          "fw_crash_counter\t\t%d\n", ar->stats.fw_crash_counter);
 646         len += scnprintf(buf + len, buf_len - len,
 647                          "fw_warm_reset_counter\t\t%d\n",
 648                          ar->stats.fw_warm_reset_counter);
 649         len += scnprintf(buf + len, buf_len - len,
 650                          "fw_cold_reset_counter\t\t%d\n",
 651                          ar->stats.fw_cold_reset_counter);
 652
 653         spin_unlock_bh(&ar->data_lock);
 654
 655         ret = simple_read_from_buffer(user_buf, count, ppos, buf, len);
 656
 657         kfree(buf);
 658
 659         return ret;
 660 }
 661
 662 static const struct file_operations fops_fw_reset_stats = {
 663         .open = simple_open,
 664         .read = ath10k_debug_fw_reset_stats_read,
 665         .owner = THIS_MODULE,
 666         .llseek = default_llseek,
 667 };
 668
 669 /* This is a clean assert crash in firmware. */
 670 static int ath10k_debug_fw_assert(struct ath10k *ar)
 671 {
 672         struct wmi_vdev_install_key_cmd *cmd;
 673         struct sk_buff *skb;
 674
 675         skb = ath10k_wmi_alloc_skb(ar, sizeof(*cmd) + 16);
 676         if (!skb)
 677                 return -ENOMEM;
 678
 679         cmd = (struct wmi_vdev_install_key_cmd *)skb->data;
 680         memset(cmd, 0, sizeof(*cmd));
 681
 682         /* big enough number so that firmware asserts */
 683         cmd->vdev_id = __cpu_to_le32(0x7ffe);
 684
 685         return ath10k_wmi_cmd_send(ar, skb,
 686                                    ar->wmi.cmd->vdev_install_key_cmdid);
 687 }
 688
 689 static ssize_t ath10k_read_simulate_fw_crash(struct file *file,
 690                                              char __user *user_buf,
 691                                              size_t count, loff_t *ppos)
 692 {
 693         const char buf[] =
 694                 "To simulate firmware crash write one of the keywords to this file:\n"
 695                 "`soft` - this will send WMI_FORCE_FW_HANG_ASSERT to firmware if FW supports that command.\n"
 696                 "`hard` - this will send to firmware command with illegal parameters causing firmware crash.\n"
 697                 "`assert` - this will send special illegal parameter to firmware to cause assert failure and crash.\n";
 698
 699         return simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
 700 }
 701
 702 /* Simulate firmware crash:
 703  * 'soft': Call wmi command causing firmware hang. This firmware hang is
 704  * recoverable by warm firmware reset.
 705  * 'hard': Force firmware crash by setting any vdev parameter for not allowed
 706  * vdev id. This is hard firmware crash because it is recoverable only by cold
 707  * firmware reset.
 708  */
 709 static ssize_t ath10k_write_simulate_fw_crash(struct file *file,
 710                                               const char __user *user_buf,
 711                                               size_t count, loff_t *ppos)
 712 {
 713         struct ath10k *ar = file->private_data;
 714         char buf[32];
 715         int ret;
 716
 717         mutex_lock(&ar->conf_mutex);
 718
 719         simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, user_buf, count);
 720
 721         /* make sure that buf is null terminated */
 722         buf[sizeof(buf) - 1] = 0;
 723
 724         if (ar->state != ATH10K_STATE_ON &&
 725             ar->state != ATH10K_STATE_RESTARTED) {
 726                 ret = -ENETDOWN;
 727                 goto exit;
 728         }
 729
 730         /* drop the possible '\n' from the end */
 731         if (buf[count - 1] == '\n') {
 732                 buf[count - 1] = 0;
 733                 count--;
 734         }
 735
 736         if (!strcmp(buf, "soft")) {
 737                 ath10k_info(ar, "simulating soft firmware crash\n");
 738                 ret = ath10k_wmi_force_fw_hang(ar, WMI_FORCE_FW_HANG_ASSERT, 0);
 739         } else if (!strcmp(buf, "hard")) {
 740                 ath10k_info(ar, "simulating hard firmware crash\n");
 741                 /* 0x7fff is vdev id, and it is always out of range for all
 742                  * firmware variants in order to force a firmware crash.
 743                  */
 744                 ret = ath10k_wmi_vdev_set_param(ar, 0x7fff,
 745                                                 ar->wmi.vdev_param->rts_threshold,
 746                                                 0);
 747         } else if (!strcmp(buf, "assert")) {
 748                 ath10k_info(ar, "simulating firmware assert crash\n");
 749                 ret = ath10k_debug_fw_assert(ar);
 750         } else {
 751                 ret = -EINVAL;
 752                 goto exit;
 753         }
 754
 755         if (ret) {
 756                 ath10k_warn(ar, "failed to simulate firmware crash: %d\n", ret);
 757                 goto exit;
 758         }
 759
 760         ret = count;
 761
 762 exit:
 763         mutex_unlock(&ar->conf_mutex);
 764         return ret;
 765 }
 766
 767 static const struct file_operations fops_simulate_fw_crash = {
 768         .read = ath10k_read_simulate_fw_crash,
 769         .write = ath10k_write_simulate_fw_crash,
 770         .open = simple_open,
 771         .owner = THIS_MODULE,
 772         .llseek = default_llseek,
 773 };
 774
 775 static ssize_t ath10k_read_chip_id(struct file *file, char __user *user_buf,
 776                                    size_t count, loff_t *ppos)
 777 {
 778         struct ath10k *ar = file->private_data;
 779         unsigned int len;
 780         char buf[50];
 781
 782         len = scnprintf(buf, sizeof(buf), "0x%08x\n", ar->chip_id);
 783
 784         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 785 }
 786
 787 static const struct file_operations fops_chip_id = {
 788         .read = ath10k_read_chip_id,
 789         .open = simple_open,
 790         .owner = THIS_MODULE,
 791         .llseek = default_llseek,
 792 };
 793
 794 struct ath10k_fw_crash_data *
 795 ath10k_debug_get_new_fw_crash_data(struct ath10k *ar)
 796 {
 797         struct ath10k_fw_crash_data *crash_data = ar->debug.fw_crash_data;
 798
 799         lockdep_assert_held(&ar->data_lock);
 800
 801         crash_data->crashed_since_read = true;
 802         uuid_le_gen(&crash_data->uuid);
 803         getnstimeofday(&crash_data->timestamp);
 804
 805         return crash_data;
 806 }
 807 EXPORT_SYMBOL(ath10k_debug_get_new_fw_crash_data);
 808
 809 static struct ath10k_dump_file_data *ath10k_build_dump_file(struct ath10k *ar)
 810 {
 811         struct ath10k_fw_crash_data *crash_data = ar->debug.fw_crash_data;
 812         struct ath10k_dump_file_data *dump_data;
 813         struct ath10k_tlv_dump_data *dump_tlv;
 814         int hdr_len = sizeof(*dump_data);
 815         unsigned int len, sofar = 0;
 816         unsigned char *buf;
 817
 818         len = hdr_len;
 819         len += sizeof(*dump_tlv) + sizeof(crash_data->registers);
 820
 821         sofar += hdr_len;
 822
 823         /* This is going to get big when we start dumping FW RAM and such,
 824          * so go ahead and use vmalloc.
 825          */
 826         buf = vzalloc(len);
 827         if (!buf)
 828                 return NULL;
 829
 830         spin_lock_bh(&ar->data_lock);
 831
 832         if (!crash_data->crashed_since_read) {
 833                 spin_unlock_bh(&ar->data_lock);
 834                 vfree(buf);
 835                 return NULL;
 836         }
 837
 838         dump_data = (struct ath10k_dump_file_data *)(buf);
 839         strlcpy(dump_data->df_magic, "ATH10K-FW-DUMP",
 840                 sizeof(dump_data->df_magic));
 841         dump_data->len = cpu_to_le32(len);
 842
 843         dump_data->version = cpu_to_le32(ATH10K_FW_CRASH_DUMP_VERSION);
 844
 845         memcpy(dump_data->uuid, &crash_data->uuid, sizeof(dump_data->uuid));
 846         dump_data->chip_id = cpu_to_le32(ar->chip_id);
 847         dump_data->bus_type = cpu_to_le32(0);
 848         dump_data->target_version = cpu_to_le32(ar->target_version);
 849         dump_data->fw_version_major = cpu_to_le32(ar->fw_version_major);
 850         dump_data->fw_version_minor = cpu_to_le32(ar->fw_version_minor);
 851         dump_data->fw_version_release = cpu_to_le32(ar->fw_version_release);
 852         dump_data->fw_version_build = cpu_to_le32(ar->fw_version_build);
 853         dump_data->phy_capability = cpu_to_le32(ar->phy_capability);
 854         dump_data->hw_min_tx_power = cpu_to_le32(ar->hw_min_tx_power);
 855         dump_data->hw_max_tx_power = cpu_to_le32(ar->hw_max_tx_power);
 856         dump_data->ht_cap_info = cpu_to_le32(ar->ht_cap_info);
 857         dump_data->vht_cap_info = cpu_to_le32(ar->vht_cap_info);
 858         dump_data->num_rf_chains = cpu_to_le32(ar->num_rf_chains);
 859
 860         strlcpy(dump_data->fw_ver, ar->hw->wiphy->fw_version,
 861                 sizeof(dump_data->fw_ver));
 862
 863         dump_data->kernel_ver_code = cpu_to_le32(LINUX_VERSION_CODE);
 864         strlcpy(dump_data->kernel_ver, VERMAGIC_STRING,
 865                 sizeof(dump_data->kernel_ver));
 866
 867         dump_data->tv_sec = cpu_to_le64(crash_data->timestamp.tv_sec);
 868         dump_data->tv_nsec = cpu_to_le64(crash_data->timestamp.tv_nsec);
 869
 870         /* Gather crash-dump */
 871         dump_tlv = (struct ath10k_tlv_dump_data *)(buf + sofar);
 872         dump_tlv->type = cpu_to_le32(ATH10K_FW_CRASH_DUMP_REGISTERS);
 873         dump_tlv->tlv_len = cpu_to_le32(sizeof(crash_data->registers));
 874         memcpy(dump_tlv->tlv_data, &crash_data->registers,
 875                sizeof(crash_data->registers));
 876         sofar += sizeof(*dump_tlv) + sizeof(crash_data->registers);
 877
 878         ar->debug.fw_crash_data->crashed_since_read = false;
 879
 880         spin_unlock_bh(&ar->data_lock);
 881
 882         return dump_data;
 883 }
 884
 885 static int ath10k_fw_crash_dump_open(struct inode *inode, struct file *file)
 886 {
 887         struct ath10k *ar = inode->i_private;
 888         struct ath10k_dump_file_data *dump;
 889
 890         dump = ath10k_build_dump_file(ar);
 891         if (!dump)
 892                 return -ENODATA;
 893
 894         file->private_data = dump;
 895
 896         return 0;
 897 }
 898
 899 static ssize_t ath10k_fw_crash_dump_read(struct file *file,
 900                                          char __user *user_buf,
 901                                          size_t count, loff_t *ppos)
 902 {
 903         struct ath10k_dump_file_data *dump_file = file->private_data;
 904
 905         return simple_read_from_buffer(user_buf, count, ppos,
 906                                        dump_file,
 907                                        le32_to_cpu(dump_file->len));
 908 }
 909
 910 static int ath10k_fw_crash_dump_release(struct inode *inode,
 911                                         struct file *file)
 912 {
 913         vfree(file->private_data);
 914
 915         return 0;
 916 }
 917
 918 static const struct file_operations fops_fw_crash_dump = {
 919         .open = ath10k_fw_crash_dump_open,
 920         .read = ath10k_fw_crash_dump_read,
 921         .release = ath10k_fw_crash_dump_release,
 922         .owner = THIS_MODULE,
 923         .llseek = default_llseek,
 924 };
 925
 926 static int ath10k_debug_htt_stats_req(struct ath10k *ar)
 927 {
 928         u64 cookie;
 929         int ret;
 930
 931         lockdep_assert_held(&ar->conf_mutex);
 932
 933         if (ar->debug.htt_stats_mask == 0)
 934                 /* htt stats are disabled */
 935                 return 0;
 936
 937         if (ar->state != ATH10K_STATE_ON)
 938                 return 0;
 939
 940         cookie = get_jiffies_64();
 941
 942         ret = ath10k_htt_h2t_stats_req(&ar->htt, ar->debug.htt_stats_mask,
 943                                        cookie);
 944         if (ret) {
 945                 ath10k_warn(ar, "failed to send htt stats request: %d\n", ret);
 946                 return ret;
 947         }
 948
 949         queue_delayed_work(ar->workqueue, &ar->debug.htt_stats_dwork,
 950                            msecs_to_jiffies(ATH10K_DEBUG_HTT_STATS_INTERVAL));
 951
 952         return 0;
 953 }
 954
 955 static void ath10k_debug_htt_stats_dwork(struct work_struct *work)
 956 {
 957         struct ath10k *ar = container_of(work, struct ath10k,
 958                                          debug.htt_stats_dwork.work);
 959
 960         mutex_lock(&ar->conf_mutex);
 961
 962         ath10k_debug_htt_stats_req(ar);
 963
 964         mutex_unlock(&ar->conf_mutex);
 965 }
 966
 967 static ssize_t ath10k_read_htt_stats_mask(struct file *file,
 968                                           char __user *user_buf,
 969                                           size_t count, loff_t *ppos)
 970 {
 971         struct ath10k *ar = file->private_data;
 972         char buf[32];
 973         unsigned int len;
 974
 975         len = scnprintf(buf, sizeof(buf), "%lu\n", ar->debug.htt_stats_mask);
 976
 977         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 978 }
 979
 980 static ssize_t ath10k_write_htt_stats_mask(struct file *file,
 981                                            const char __user *user_buf,
 982                                            size_t count, loff_t *ppos)
 983 {
 984         struct ath10k *ar = file->private_data;
 985         unsigned long mask;
 986         int ret;
 987
 988         ret = kstrtoul_from_user(user_buf, count, 0, &mask);
 989         if (ret)
 990                 return ret;
 991
 992         /* max 8 bit masks (for now) */
 993         if (mask > 0xff)
 994                 return -E2BIG;
 995
 996         mutex_lock(&ar->conf_mutex);
 997
 998         ar->debug.htt_stats_mask = mask;
 999
1000         ret = ath10k_debug_htt_stats_req(ar);
1001         if (ret)
1002                 goto out;
1003
1004         ret = count;
1005
1006 out:
1007         mutex_unlock(&ar->conf_mutex);
1008
1009         return ret;
1010 }
1011
1012 static const struct file_operations fops_htt_stats_mask = {
1013         .read = ath10k_read_htt_stats_mask,
1014         .write = ath10k_write_htt_stats_mask,
1015         .open = simple_open,
1016         .owner = THIS_MODULE,
1017         .llseek = default_llseek,
1018 };
1019
1020 static ssize_t ath10k_read_htt_max_amsdu_ampdu(struct file *file,
1021                                                char __user *user_buf,
1022                                                size_t count, loff_t *ppos)
1023 {
1024         struct ath10k *ar = file->private_data;
1025         char buf[64];
1026         u8 amsdu = 3, ampdu = 64;
1027         unsigned int len;
1028
1029         mutex_lock(&ar->conf_mutex);
1030
1031         if (ar->debug.htt_max_amsdu)
1032                 amsdu = ar->debug.htt_max_amsdu;
1033
1034         if (ar->debug.htt_max_ampdu)
1035                 ampdu = ar->debug.htt_max_ampdu;
1036
1037         mutex_unlock(&ar->conf_mutex);
1038
1039         len = scnprintf(buf, sizeof(buf), "%u %u\n", amsdu, ampdu);
1040
1041         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
1042 }
1043
1044 static ssize_t ath10k_write_htt_max_amsdu_ampdu(struct file *file,
1045                                                 const char __user *user_buf,
1046                                                 size_t count, loff_t *ppos)
1047 {
1048         struct ath10k *ar = file->private_data;
1049         int res;
1050         char buf[64];
1051         unsigned int amsdu, ampdu;
1052
1053         simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, user_buf, count);
1054
1055         /* make sure that buf is null terminated */
1056         buf[sizeof(buf) - 1] = 0;
1057
1058         res = sscanf(buf, "%u %u", &amsdu, &ampdu);
1059
1060         if (res != 2)
1061                 return -EINVAL;
1062
1063         mutex_lock(&ar->conf_mutex);
1064
1065         res = ath10k_htt_h2t_aggr_cfg_msg(&ar->htt, ampdu, amsdu);
1066         if (res)
1067                 goto out;
1068
1069         res = count;
1070         ar->debug.htt_max_amsdu = amsdu;
1071         ar->debug.htt_max_ampdu = ampdu;
1072
1073 out:
1074         mutex_unlock(&ar->conf_mutex);
1075         return res;
1076 }
1077
1078 static const struct file_operations fops_htt_max_amsdu_ampdu = {
1079         .read = ath10k_read_htt_max_amsdu_ampdu,
1080         .write = ath10k_write_htt_max_amsdu_ampdu,
1081         .open = simple_open,
1082         .owner = THIS_MODULE,
1083         .llseek = default_llseek,
1084 };
1085
1086 static ssize_t ath10k_read_fw_dbglog(struct file *file,
1087                                      char __user *user_buf,
1088                                      size_t count, loff_t *ppos)
1089 {
1090         struct ath10k *ar = file->private_data;
1091         unsigned int len;
1092         char buf[32];
1093
1094         len = scnprintf(buf, sizeof(buf), "0x%08x\n",
1095                         ar->debug.fw_dbglog_mask);
1096
1097         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
1098 }
1099
1100 static ssize_t ath10k_write_fw_dbglog(struct file *file,
1101                                       const char __user *user_buf,
1102                                       size_t count, loff_t *ppos)
1103 {
1104         struct ath10k *ar = file->private_data;
1105         unsigned long mask;
1106         int ret;
1107
1108         ret = kstrtoul_from_user(user_buf, count, 0, &mask);
1109         if (ret)
1110                 return ret;
1111
1112         mutex_lock(&ar->conf_mutex);
1113
1114         ar->debug.fw_dbglog_mask = mask;
1115
1116         if (ar->state == ATH10K_STATE_ON) {
1117                 ret = ath10k_wmi_dbglog_cfg(ar, ar->debug.fw_dbglog_mask);
1118                 if (ret) {
1119                         ath10k_warn(ar, "dbglog cfg failed from debugfs: %d\n",
1120                                     ret);
1121                         goto exit;
1122                 }
1123         }
1124
1125         ret = count;
1126
1127 exit:
1128         mutex_unlock(&ar->conf_mutex);
1129
1130         return ret;
1131 }
1132
1133 static const struct file_operations fops_fw_dbglog = {
1134         .read = ath10k_read_fw_dbglog,
1135         .write = ath10k_write_fw_dbglog,
1136         .open = simple_open,
1137         .owner = THIS_MODULE,
1138         .llseek = default_llseek,
1139 };
1140
1141 static int ath10k_debug_cal_data_open(struct inode *inode, struct file *file)
1142 {
1143         struct ath10k *ar = inode->i_private;
1144         void *buf;
1145         u32 hi_addr;
1146         __le32 addr;
1147         int ret;
1148
1149         mutex_lock(&ar->conf_mutex);
1150
1151         if (ar->state != ATH10K_STATE_ON &&
1152             ar->state != ATH10K_STATE_UTF) {
1153                 ret = -ENETDOWN;
1154                 goto err;
1155         }
1156
1157         buf = vmalloc(QCA988X_CAL_DATA_LEN);
1158         if (!buf) {
1159                 ret = -ENOMEM;
1160                 goto err;
1161         }
1162
1163         hi_addr = host_interest_item_address(HI_ITEM(hi_board_data));
1164
1165         ret = ath10k_hif_diag_read(ar, hi_addr, &addr, sizeof(addr));
1166         if (ret) {
1167                 ath10k_warn(ar, "failed to read hi_board_data address: %d\n", ret);
1168                 goto err_vfree;
1169         }
1170
1171         ret = ath10k_hif_diag_read(ar, le32_to_cpu(addr), buf,
1172                                    QCA988X_CAL_DATA_LEN);
1173         if (ret) {
1174                 ath10k_warn(ar, "failed to read calibration data: %d\n", ret);
1175                 goto err_vfree;
1176         }
1177
1178         file->private_data = buf;
1179
1180         mutex_unlock(&ar->conf_mutex);
1181
1182         return 0;
1183
1184 err_vfree:
1185         vfree(buf);
1186
1187 err:
1188         mutex_unlock(&ar->conf_mutex);
1189
1190         return ret;
1191 }
1192
1193 static ssize_t ath10k_debug_cal_data_read(struct file *file,
1194                                           char __user *user_buf,
1195                                           size_t count, loff_t *ppos)
1196 {
1197         void *buf = file->private_data;
1198
1199         return simple_read_from_buffer(user_buf, count, ppos,
1200                                        buf, QCA988X_CAL_DATA_LEN);
1201 }
1202
1203 static int ath10k_debug_cal_data_release(struct inode *inode,
1204                                          struct file *file)
1205 {
1206         vfree(file->private_data);
1207
1208         return 0;
1209 }
1210
1211 static const struct file_operations fops_cal_data = {
1212         .open = ath10k_debug_cal_data_open,
1213         .read = ath10k_debug_cal_data_read,
1214         .release = ath10k_debug_cal_data_release,
1215         .owner = THIS_MODULE,
1216         .llseek = default_llseek,
1217 };
1218
1219 int ath10k_debug_start(struct ath10k *ar)
1220 {
1221         int ret;
1222
1223         lockdep_assert_held(&ar->conf_mutex);
1224
1225         ret = ath10k_debug_htt_stats_req(ar);
1226         if (ret)
1227                 /* continue normally anyway, this isn't serious */
1228                 ath10k_warn(ar, "failed to start htt stats workqueue: %d\n",
1229                             ret);
1230
1231         if (ar->debug.fw_dbglog_mask) {
1232                 ret = ath10k_wmi_dbglog_cfg(ar, ar->debug.fw_dbglog_mask);
1233                 if (ret)
1234                         /* not serious */
1235                         ath10k_warn(ar, "failed to enable dbglog during start: %d",
1236                                     ret);
1237         }
1238
1239         return 0;
1240 }
1241
1242 void ath10k_debug_stop(struct ath10k *ar)
1243 {
1244         lockdep_assert_held(&ar->conf_mutex);
1245
1246         /* Must not use _sync to avoid deadlock, we do that in
1247          * ath10k_debug_destroy(). The check for htt_stats_mask is to avoid
1248          * warning from del_timer(). */
1249         if (ar->debug.htt_stats_mask != 0)
1250                 cancel_delayed_work(&ar->debug.htt_stats_dwork);
1251
1252         ar->debug.htt_max_amsdu = 0;
1253         ar->debug.htt_max_ampdu = 0;
1254 }
1255
1256 static ssize_t ath10k_write_simulate_radar(struct file *file,
1257                                            const char __user *user_buf,
1258                                            size_t count, loff_t *ppos)
1259 {
1260         struct ath10k *ar = file->private_data;
1261
1262         ieee80211_radar_detected(ar->hw);
1263
1264         return count;
1265 }
1266
1267 static const struct file_operations fops_simulate_radar = {
1268         .write = ath10k_write_simulate_radar,
1269         .open = simple_open,
1270         .owner = THIS_MODULE,
1271         .llseek = default_llseek,
1272 };
1273
1274 #define ATH10K_DFS_STAT(s, p) (\
1275         len += scnprintf(buf + len, size - len, "%-28s : %10u\n", s, \
1276                          ar->debug.dfs_stats.p))
1277
1278 #define ATH10K_DFS_POOL_STAT(s, p) (\
1279         len += scnprintf(buf + len, size - len, "%-28s : %10u\n", s, \
1280                          ar->debug.dfs_pool_stats.p))
1281
1282 static ssize_t ath10k_read_dfs_stats(struct file *file, char __user *user_buf,
1283                                      size_t count, loff_t *ppos)
1284 {
1285         int retval = 0, len = 0;
1286         const int size = 8000;
1287         struct ath10k *ar = file->private_data;
1288         char *buf;
1289
1290         buf = kzalloc(size, GFP_KERNEL);
1291         if (buf == NULL)
1292                 return -ENOMEM;
1293
1294         if (!ar->dfs_detector) {
1295                 len += scnprintf(buf + len, size - len, "DFS not enabled\n");
1296                 goto exit;
1297         }
1298
1299         ar->debug.dfs_pool_stats =
1300                         ar->dfs_detector->get_stats(ar->dfs_detector);
1301
1302         len += scnprintf(buf + len, size - len, "Pulse detector statistics:\n");
1303
1304         ATH10K_DFS_STAT("reported phy errors", phy_errors);
1305         ATH10K_DFS_STAT("pulse events reported", pulses_total);
1306         ATH10K_DFS_STAT("DFS pulses detected", pulses_detected);
1307         ATH10K_DFS_STAT("DFS pulses discarded", pulses_discarded);
1308         ATH10K_DFS_STAT("Radars detected", radar_detected);
1309
1310         len += scnprintf(buf + len, size - len, "Global Pool statistics:\n");
1311         ATH10K_DFS_POOL_STAT("Pool references", pool_reference);
1312         ATH10K_DFS_POOL_STAT("Pulses allocated", pulse_allocated);
1313         ATH10K_DFS_POOL_STAT("Pulses alloc error", pulse_alloc_error);
1314         ATH10K_DFS_POOL_STAT("Pulses in use", pulse_used);
1315         ATH10K_DFS_POOL_STAT("Seqs. allocated", pseq_allocated);
1316         ATH10K_DFS_POOL_STAT("Seqs. alloc error", pseq_alloc_error);
1317         ATH10K_DFS_POOL_STAT("Seqs. in use", pseq_used);
1318
1319 exit:
1320         if (len > size)
1321                 len = size;
1322
1323         retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
1324         kfree(buf);
1325
1326         return retval;
1327 }
1328
1329 static const struct file_operations fops_dfs_stats = {
1330         .read = ath10k_read_dfs_stats,
1331         .open = simple_open,
1332         .owner = THIS_MODULE,
1333         .llseek = default_llseek,
1334 };
1335
1336 int ath10k_debug_create(struct ath10k *ar)
1337 {
1338         ar->debug.fw_crash_data = vzalloc(sizeof(*ar->debug.fw_crash_data));
1339         if (!ar->debug.fw_crash_data)
1340                 return -ENOMEM;
1341
1342         INIT_LIST_HEAD(&ar->debug.fw_stats.pdevs);
1343         INIT_LIST_HEAD(&ar->debug.fw_stats.peers);
1344
1345         return 0;
1346 }
1347
1348 void ath10k_debug_destroy(struct ath10k *ar)
1349 {
1350         vfree(ar->debug.fw_crash_data);
1351         ar->debug.fw_crash_data = NULL;
1352
1353         ath10k_debug_fw_stats_reset(ar);
1354 }
1355
1356 int ath10k_debug_register(struct ath10k *ar)
1357 {
1358         ar->debug.debugfs_phy = debugfs_create_dir("ath10k",
1359                                                    ar->hw->wiphy->debugfsdir);
1360         if (IS_ERR_OR_NULL(ar->debug.debugfs_phy)) {
1361                 if (IS_ERR(ar->debug.debugfs_phy))
1362                         return PTR_ERR(ar->debug.debugfs_phy);
1363
1364                 return -ENOMEM;
1365         }
1366
1367         INIT_DELAYED_WORK(&ar->debug.htt_stats_dwork,
1368                           ath10k_debug_htt_stats_dwork);
1369
1370         init_completion(&ar->debug.fw_stats_complete);
1371
1372         debugfs_create_file("fw_stats", S_IRUSR, ar->debug.debugfs_phy, ar,
1373                             &fops_fw_stats);
1374
1375         debugfs_create_file("fw_reset_stats", S_IRUSR, ar->debug.debugfs_phy,
1376                             ar, &fops_fw_reset_stats);
1377
1378         debugfs_create_file("wmi_services", S_IRUSR, ar->debug.debugfs_phy, ar,
1379                             &fops_wmi_services);
1380
1381         debugfs_create_file("simulate_fw_crash", S_IRUSR, ar->debug.debugfs_phy,
1382                             ar, &fops_simulate_fw_crash);
1383
1384         debugfs_create_file("fw_crash_dump", S_IRUSR, ar->debug.debugfs_phy,
1385                             ar, &fops_fw_crash_dump);
1386
1387         debugfs_create_file("chip_id", S_IRUSR, ar->debug.debugfs_phy,
1388                             ar, &fops_chip_id);
1389
1390         debugfs_create_file("htt_stats_mask", S_IRUSR, ar->debug.debugfs_phy,
1391                             ar, &fops_htt_stats_mask);
1392
1393         debugfs_create_file("htt_max_amsdu_ampdu", S_IRUSR | S_IWUSR,
1394                             ar->debug.debugfs_phy, ar,
1395                             &fops_htt_max_amsdu_ampdu);
1396
1397         debugfs_create_file("fw_dbglog", S_IRUSR, ar->debug.debugfs_phy,
1398                             ar, &fops_fw_dbglog);
1399
1400         debugfs_create_file("cal_data", S_IRUSR, ar->debug.debugfs_phy,
1401                             ar, &fops_cal_data);
1402
1403         if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED)) {
1404                 debugfs_create_file("dfs_simulate_radar", S_IWUSR,
1405                                     ar->debug.debugfs_phy, ar,
1406                                     &fops_simulate_radar);
1407
1408                 debugfs_create_bool("dfs_block_radar_events", S_IWUSR,
1409                                     ar->debug.debugfs_phy,
1410                                     &ar->dfs_block_radar_events);
1411
1412                 debugfs_create_file("dfs_stats", S_IRUSR,
1413                                     ar->debug.debugfs_phy, ar,
1414                                     &fops_dfs_stats);
1415         }
1416
1417         return 0;
1418 }
1419
1420 void ath10k_debug_unregister(struct ath10k *ar)
1421 {
1422         cancel_delayed_work_sync(&ar->debug.htt_stats_dwork);
1423 }
1424
1425 #endif /* CONFIG_ATH10K_DEBUGFS */
1426
1427 #ifdef CONFIG_ATH10K_DEBUG
1428 void ath10k_dbg(struct ath10k *ar, enum ath10k_debug_mask mask,
1429                 const char *fmt, ...)
1430 {
1431         struct va_format vaf;
1432         va_list args;
1433
1434         va_start(args, fmt);
1435
1436         vaf.fmt = fmt;
1437         vaf.va = &args;
1438
1439         if (ath10k_debug_mask & mask)
1440                 dev_printk(KERN_DEBUG, ar->dev, "%pV", &vaf);
1441
1442         trace_ath10k_log_dbg(ar, mask, &vaf);
1443
1444         va_end(args);
1445 }
1446 EXPORT_SYMBOL(ath10k_dbg);
1447
1448 void ath10k_dbg_dump(struct ath10k *ar,
1449                      enum ath10k_debug_mask mask,
1450                      const char *msg, const char *prefix,
1451                      const void *buf, size_t len)
1452 {
1453         char linebuf[256];
1454         unsigned int linebuflen;
1455         const void *ptr;
1456
1457         if (ath10k_debug_mask & mask) {
1458                 if (msg)
1459                         ath10k_dbg(ar, mask, "%s\n", msg);
1460
1461                 for (ptr = buf; (ptr - buf) < len; ptr += 16) {
1462                         linebuflen = 0;
1463                         linebuflen += scnprintf(linebuf + linebuflen,
1464                                                 sizeof(linebuf) - linebuflen,
1465                                                 "%s%08x: ",
1466                                                 (prefix ? prefix : ""),
1467                                                 (unsigned int)(ptr - buf));
1468                         hex_dump_to_buffer(ptr, len - (ptr - buf), 16, 1,
1469                                            linebuf + linebuflen,
1470                                            sizeof(linebuf) - linebuflen, true);
1471                         dev_printk(KERN_DEBUG, ar->dev, "%s\n", linebuf);
1472                 }
1473         }
1474
1475         /* tracing code doesn't like null strings :/ */
1476         trace_ath10k_log_dbg_dump(ar, msg ? msg : "", prefix ? prefix : "",
1477                                   buf, len);
1478 }
1479 EXPORT_SYMBOL(ath10k_dbg_dump);
1480
1481 #endif /* CONFIG_ATH10K_DEBUG */