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/vmalloc.h>
  21 #include <linux/utsname.h>
  22
  23 #include "core.h"
  24 #include "debug.h"
  25 #include "hif.h"
  26
  27 /* ms */
  28 #define ATH10K_DEBUG_HTT_STATS_INTERVAL 1000
  29
  30 #define ATH10K_FW_CRASH_DUMP_VERSION 1
  31
  32 /**
  33  * enum ath10k_fw_crash_dump_type - types of data in the dump file
  34  * @ATH10K_FW_CRASH_DUMP_REGDUMP: Register crash dump in binary format
  35  */
  36 enum ath10k_fw_crash_dump_type {
  37         ATH10K_FW_CRASH_DUMP_REGISTERS = 0,
  38
  39         ATH10K_FW_CRASH_DUMP_MAX,
  40 };
  41
  42 struct ath10k_tlv_dump_data {
  43         /* see ath10k_fw_crash_dump_type above */
  44         __le32 type;
  45
  46         /* in bytes */
  47         __le32 tlv_len;
  48
  49         /* pad to 32-bit boundaries as needed */
  50         u8 tlv_data[];
  51 } __packed;
  52
  53 struct ath10k_dump_file_data {
  54         /* dump file information */
  55
  56         /* "ATH10K-FW-DUMP" */
  57         char df_magic[16];
  58
  59         __le32 len;
  60
  61         /* file dump version */
  62         __le32 version;
  63
  64         /* some info we can get from ath10k struct that might help */
  65
  66         u8 uuid[16];
  67
  68         __le32 chip_id;
  69
  70         /* 0 for now, in place for later hardware */
  71         __le32 bus_type;
  72
  73         __le32 target_version;
  74         __le32 fw_version_major;
  75         __le32 fw_version_minor;
  76         __le32 fw_version_release;
  77         __le32 fw_version_build;
  78         __le32 phy_capability;
  79         __le32 hw_min_tx_power;
  80         __le32 hw_max_tx_power;
  81         __le32 ht_cap_info;
  82         __le32 vht_cap_info;
  83         __le32 num_rf_chains;
  84
  85         /* firmware version string */
  86         char fw_ver[ETHTOOL_FWVERS_LEN];
  87
  88         /* Kernel related information */
  89
  90         /* time-of-day stamp */
  91         __le64 tv_sec;
  92
  93         /* time-of-day stamp, nano-seconds */
  94         __le64 tv_nsec;
  95
  96         /* LINUX_VERSION_CODE */
  97         __le32 kernel_ver_code;
  98
  99         /* VERMAGIC_STRING */
 100         char kernel_ver[64];
 101
 102         /* room for growth w/out changing binary format */
 103         u8 unused[128];
 104
 105         /* struct ath10k_tlv_dump_data + more */
 106         u8 data[0];
 107 } __packed;
 108
 109 void ath10k_info(struct ath10k *ar, const char *fmt, ...)
 110 {
 111         struct va_format vaf = {
 112                 .fmt = fmt,
 113         };
 114         va_list args;
 115
 116         va_start(args, fmt);
 117         vaf.va = &args;
 118         dev_info(ar->dev, "%pV", &vaf);
 119         trace_ath10k_log_info(ar, &vaf);
 120         va_end(args);
 121 }
 122 EXPORT_SYMBOL(ath10k_info);
 123
 124 void ath10k_print_driver_info(struct ath10k *ar)
 125 {
 126         ath10k_info(ar, "%s (0x%08x, 0x%08x) fw %s api %d htt %d.%d wmi %d.%d.%d.%d cal %s\n",
 127                     ar->hw_params.name,
 128                     ar->target_version,
 129                     ar->chip_id,
 130                     ar->hw->wiphy->fw_version,
 131                     ar->fw_api,
 132                     ar->htt.target_version_major,
 133                     ar->htt.target_version_minor,
 134                     ar->fw_version_major,
 135                     ar->fw_version_minor,
 136                     ar->fw_version_release,
 137                     ar->fw_version_build,
 138                     ath10k_cal_mode_str(ar->cal_mode));
 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                 "`hw-restart` - this will simply queue hw restart without fw/hw actually crashing.\n";
 699
 700         return simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
 701 }
 702
 703 /* Simulate firmware crash:
 704  * 'soft': Call wmi command causing firmware hang. This firmware hang is
 705  * recoverable by warm firmware reset.
 706  * 'hard': Force firmware crash by setting any vdev parameter for not allowed
 707  * vdev id. This is hard firmware crash because it is recoverable only by cold
 708  * firmware reset.
 709  */
 710 static ssize_t ath10k_write_simulate_fw_crash(struct file *file,
 711                                               const char __user *user_buf,
 712                                               size_t count, loff_t *ppos)
 713 {
 714         struct ath10k *ar = file->private_data;
 715         char buf[32];
 716         int ret;
 717
 718         mutex_lock(&ar->conf_mutex);
 719
 720         simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, user_buf, count);
 721
 722         /* make sure that buf is null terminated */
 723         buf[sizeof(buf) - 1] = 0;
 724
 725         if (ar->state != ATH10K_STATE_ON &&
 726             ar->state != ATH10K_STATE_RESTARTED) {
 727                 ret = -ENETDOWN;
 728                 goto exit;
 729         }
 730
 731         /* drop the possible '\n' from the end */
 732         if (buf[count - 1] == '\n') {
 733                 buf[count - 1] = 0;
 734                 count--;
 735         }
 736
 737         if (!strcmp(buf, "soft")) {
 738                 ath10k_info(ar, "simulating soft firmware crash\n");
 739                 ret = ath10k_wmi_force_fw_hang(ar, WMI_FORCE_FW_HANG_ASSERT, 0);
 740         } else if (!strcmp(buf, "hard")) {
 741                 ath10k_info(ar, "simulating hard firmware crash\n");
 742                 /* 0x7fff is vdev id, and it is always out of range for all
 743                  * firmware variants in order to force a firmware crash.
 744                  */
 745                 ret = ath10k_wmi_vdev_set_param(ar, 0x7fff,
 746                                                 ar->wmi.vdev_param->rts_threshold,
 747                                                 0);
 748         } else if (!strcmp(buf, "assert")) {
 749                 ath10k_info(ar, "simulating firmware assert crash\n");
 750                 ret = ath10k_debug_fw_assert(ar);
 751         } else if (!strcmp(buf, "hw-restart")) {
 752                 ath10k_info(ar, "user requested hw restart\n");
 753                 queue_work(ar->workqueue, &ar->restart_work);
 754                 ret = 0;
 755         } else {
 756                 ret = -EINVAL;
 757                 goto exit;
 758         }
 759
 760         if (ret) {
 761                 ath10k_warn(ar, "failed to simulate firmware crash: %d\n", ret);
 762                 goto exit;
 763         }
 764
 765         ret = count;
 766
 767 exit:
 768         mutex_unlock(&ar->conf_mutex);
 769         return ret;
 770 }
 771
 772 static const struct file_operations fops_simulate_fw_crash = {
 773         .read = ath10k_read_simulate_fw_crash,
 774         .write = ath10k_write_simulate_fw_crash,
 775         .open = simple_open,
 776         .owner = THIS_MODULE,
 777         .llseek = default_llseek,
 778 };
 779
 780 static ssize_t ath10k_read_chip_id(struct file *file, char __user *user_buf,
 781                                    size_t count, loff_t *ppos)
 782 {
 783         struct ath10k *ar = file->private_data;
 784         unsigned int len;
 785         char buf[50];
 786
 787         len = scnprintf(buf, sizeof(buf), "0x%08x\n", ar->chip_id);
 788
 789         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 790 }
 791
 792 static const struct file_operations fops_chip_id = {
 793         .read = ath10k_read_chip_id,
 794         .open = simple_open,
 795         .owner = THIS_MODULE,
 796         .llseek = default_llseek,
 797 };
 798
 799 struct ath10k_fw_crash_data *
 800 ath10k_debug_get_new_fw_crash_data(struct ath10k *ar)
 801 {
 802         struct ath10k_fw_crash_data *crash_data = ar->debug.fw_crash_data;
 803
 804         lockdep_assert_held(&ar->data_lock);
 805
 806         crash_data->crashed_since_read = true;
 807         uuid_le_gen(&crash_data->uuid);
 808         getnstimeofday(&crash_data->timestamp);
 809
 810         return crash_data;
 811 }
 812 EXPORT_SYMBOL(ath10k_debug_get_new_fw_crash_data);
 813
 814 static struct ath10k_dump_file_data *ath10k_build_dump_file(struct ath10k *ar)
 815 {
 816         struct ath10k_fw_crash_data *crash_data = ar->debug.fw_crash_data;
 817         struct ath10k_dump_file_data *dump_data;
 818         struct ath10k_tlv_dump_data *dump_tlv;
 819         int hdr_len = sizeof(*dump_data);
 820         unsigned int len, sofar = 0;
 821         unsigned char *buf;
 822
 823         len = hdr_len;
 824         len += sizeof(*dump_tlv) + sizeof(crash_data->registers);
 825
 826         sofar += hdr_len;
 827
 828         /* This is going to get big when we start dumping FW RAM and such,
 829          * so go ahead and use vmalloc.
 830          */
 831         buf = vzalloc(len);
 832         if (!buf)
 833                 return NULL;
 834
 835         spin_lock_bh(&ar->data_lock);
 836
 837         if (!crash_data->crashed_since_read) {
 838                 spin_unlock_bh(&ar->data_lock);
 839                 vfree(buf);
 840                 return NULL;
 841         }
 842
 843         dump_data = (struct ath10k_dump_file_data *)(buf);
 844         strlcpy(dump_data->df_magic, "ATH10K-FW-DUMP",
 845                 sizeof(dump_data->df_magic));
 846         dump_data->len = cpu_to_le32(len);
 847
 848         dump_data->version = cpu_to_le32(ATH10K_FW_CRASH_DUMP_VERSION);
 849
 850         memcpy(dump_data->uuid, &crash_data->uuid, sizeof(dump_data->uuid));
 851         dump_data->chip_id = cpu_to_le32(ar->chip_id);
 852         dump_data->bus_type = cpu_to_le32(0);
 853         dump_data->target_version = cpu_to_le32(ar->target_version);
 854         dump_data->fw_version_major = cpu_to_le32(ar->fw_version_major);
 855         dump_data->fw_version_minor = cpu_to_le32(ar->fw_version_minor);
 856         dump_data->fw_version_release = cpu_to_le32(ar->fw_version_release);
 857         dump_data->fw_version_build = cpu_to_le32(ar->fw_version_build);
 858         dump_data->phy_capability = cpu_to_le32(ar->phy_capability);
 859         dump_data->hw_min_tx_power = cpu_to_le32(ar->hw_min_tx_power);
 860         dump_data->hw_max_tx_power = cpu_to_le32(ar->hw_max_tx_power);
 861         dump_data->ht_cap_info = cpu_to_le32(ar->ht_cap_info);
 862         dump_data->vht_cap_info = cpu_to_le32(ar->vht_cap_info);
 863         dump_data->num_rf_chains = cpu_to_le32(ar->num_rf_chains);
 864
 865         strlcpy(dump_data->fw_ver, ar->hw->wiphy->fw_version,
 866                 sizeof(dump_data->fw_ver));
 867
 868         dump_data->kernel_ver_code = 0;
 869         strlcpy(dump_data->kernel_ver, init_utsname()->release,
 870                 sizeof(dump_data->kernel_ver));
 871
 872         dump_data->tv_sec = cpu_to_le64(crash_data->timestamp.tv_sec);
 873         dump_data->tv_nsec = cpu_to_le64(crash_data->timestamp.tv_nsec);
 874
 875         /* Gather crash-dump */
 876         dump_tlv = (struct ath10k_tlv_dump_data *)(buf + sofar);
 877         dump_tlv->type = cpu_to_le32(ATH10K_FW_CRASH_DUMP_REGISTERS);
 878         dump_tlv->tlv_len = cpu_to_le32(sizeof(crash_data->registers));
 879         memcpy(dump_tlv->tlv_data, &crash_data->registers,
 880                sizeof(crash_data->registers));
 881         sofar += sizeof(*dump_tlv) + sizeof(crash_data->registers);
 882
 883         ar->debug.fw_crash_data->crashed_since_read = false;
 884
 885         spin_unlock_bh(&ar->data_lock);
 886
 887         return dump_data;
 888 }
 889
 890 static int ath10k_fw_crash_dump_open(struct inode *inode, struct file *file)
 891 {
 892         struct ath10k *ar = inode->i_private;
 893         struct ath10k_dump_file_data *dump;
 894
 895         dump = ath10k_build_dump_file(ar);
 896         if (!dump)
 897                 return -ENODATA;
 898
 899         file->private_data = dump;
 900
 901         return 0;
 902 }
 903
 904 static ssize_t ath10k_fw_crash_dump_read(struct file *file,
 905                                          char __user *user_buf,
 906                                          size_t count, loff_t *ppos)
 907 {
 908         struct ath10k_dump_file_data *dump_file = file->private_data;
 909
 910         return simple_read_from_buffer(user_buf, count, ppos,
 911                                        dump_file,
 912                                        le32_to_cpu(dump_file->len));
 913 }
 914
 915 static int ath10k_fw_crash_dump_release(struct inode *inode,
 916                                         struct file *file)
 917 {
 918         vfree(file->private_data);
 919
 920         return 0;
 921 }
 922
 923 static const struct file_operations fops_fw_crash_dump = {
 924         .open = ath10k_fw_crash_dump_open,
 925         .read = ath10k_fw_crash_dump_read,
 926         .release = ath10k_fw_crash_dump_release,
 927         .owner = THIS_MODULE,
 928         .llseek = default_llseek,
 929 };
 930
 931 static int ath10k_debug_htt_stats_req(struct ath10k *ar)
 932 {
 933         u64 cookie;
 934         int ret;
 935
 936         lockdep_assert_held(&ar->conf_mutex);
 937
 938         if (ar->debug.htt_stats_mask == 0)
 939                 /* htt stats are disabled */
 940                 return 0;
 941
 942         if (ar->state != ATH10K_STATE_ON)
 943                 return 0;
 944
 945         cookie = get_jiffies_64();
 946
 947         ret = ath10k_htt_h2t_stats_req(&ar->htt, ar->debug.htt_stats_mask,
 948                                        cookie);
 949         if (ret) {
 950                 ath10k_warn(ar, "failed to send htt stats request: %d\n", ret);
 951                 return ret;
 952         }
 953
 954         queue_delayed_work(ar->workqueue, &ar->debug.htt_stats_dwork,
 955                            msecs_to_jiffies(ATH10K_DEBUG_HTT_STATS_INTERVAL));
 956
 957         return 0;
 958 }
 959
 960 static void ath10k_debug_htt_stats_dwork(struct work_struct *work)
 961 {
 962         struct ath10k *ar = container_of(work, struct ath10k,
 963                                          debug.htt_stats_dwork.work);
 964
 965         mutex_lock(&ar->conf_mutex);
 966
 967         ath10k_debug_htt_stats_req(ar);
 968
 969         mutex_unlock(&ar->conf_mutex);
 970 }
 971
 972 static ssize_t ath10k_read_htt_stats_mask(struct file *file,
 973                                           char __user *user_buf,
 974                                           size_t count, loff_t *ppos)
 975 {
 976         struct ath10k *ar = file->private_data;
 977         char buf[32];
 978         unsigned int len;
 979
 980         len = scnprintf(buf, sizeof(buf), "%lu\n", ar->debug.htt_stats_mask);
 981
 982         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 983 }
 984
 985 static ssize_t ath10k_write_htt_stats_mask(struct file *file,
 986                                            const char __user *user_buf,
 987                                            size_t count, loff_t *ppos)
 988 {
 989         struct ath10k *ar = file->private_data;
 990         unsigned long mask;
 991         int ret;
 992
 993         ret = kstrtoul_from_user(user_buf, count, 0, &mask);
 994         if (ret)
 995                 return ret;
 996
 997         /* max 8 bit masks (for now) */
 998         if (mask > 0xff)
 999                 return -E2BIG;
1000
1001         mutex_lock(&ar->conf_mutex);
1002
1003         ar->debug.htt_stats_mask = mask;
1004
1005         ret = ath10k_debug_htt_stats_req(ar);
1006         if (ret)
1007                 goto out;
1008
1009         ret = count;
1010
1011 out:
1012         mutex_unlock(&ar->conf_mutex);
1013
1014         return ret;
1015 }
1016
1017 static const struct file_operations fops_htt_stats_mask = {
1018         .read = ath10k_read_htt_stats_mask,
1019         .write = ath10k_write_htt_stats_mask,
1020         .open = simple_open,
1021         .owner = THIS_MODULE,
1022         .llseek = default_llseek,
1023 };
1024
1025 static ssize_t ath10k_read_htt_max_amsdu_ampdu(struct file *file,
1026                                                char __user *user_buf,
1027                                                size_t count, loff_t *ppos)
1028 {
1029         struct ath10k *ar = file->private_data;
1030         char buf[64];
1031         u8 amsdu = 3, ampdu = 64;
1032         unsigned int len;
1033
1034         mutex_lock(&ar->conf_mutex);
1035
1036         if (ar->debug.htt_max_amsdu)
1037                 amsdu = ar->debug.htt_max_amsdu;
1038
1039         if (ar->debug.htt_max_ampdu)
1040                 ampdu = ar->debug.htt_max_ampdu;
1041
1042         mutex_unlock(&ar->conf_mutex);
1043
1044         len = scnprintf(buf, sizeof(buf), "%u %u\n", amsdu, ampdu);
1045
1046         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
1047 }
1048
1049 static ssize_t ath10k_write_htt_max_amsdu_ampdu(struct file *file,
1050                                                 const char __user *user_buf,
1051                                                 size_t count, loff_t *ppos)
1052 {
1053         struct ath10k *ar = file->private_data;
1054         int res;
1055         char buf[64];
1056         unsigned int amsdu, ampdu;
1057
1058         simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, user_buf, count);
1059
1060         /* make sure that buf is null terminated */
1061         buf[sizeof(buf) - 1] = 0;
1062
1063         res = sscanf(buf, "%u %u", &amsdu, &ampdu);
1064
1065         if (res != 2)
1066                 return -EINVAL;
1067
1068         mutex_lock(&ar->conf_mutex);
1069
1070         res = ath10k_htt_h2t_aggr_cfg_msg(&ar->htt, ampdu, amsdu);
1071         if (res)
1072                 goto out;
1073
1074         res = count;
1075         ar->debug.htt_max_amsdu = amsdu;
1076         ar->debug.htt_max_ampdu = ampdu;
1077
1078 out:
1079         mutex_unlock(&ar->conf_mutex);
1080         return res;
1081 }
1082
1083 static const struct file_operations fops_htt_max_amsdu_ampdu = {
1084         .read = ath10k_read_htt_max_amsdu_ampdu,
1085         .write = ath10k_write_htt_max_amsdu_ampdu,
1086         .open = simple_open,
1087         .owner = THIS_MODULE,
1088         .llseek = default_llseek,
1089 };
1090
1091 static ssize_t ath10k_read_fw_dbglog(struct file *file,
1092                                      char __user *user_buf,
1093                                      size_t count, loff_t *ppos)
1094 {
1095         struct ath10k *ar = file->private_data;
1096         unsigned int len;
1097         char buf[32];
1098
1099         len = scnprintf(buf, sizeof(buf), "0x%08x\n",
1100                         ar->debug.fw_dbglog_mask);
1101
1102         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
1103 }
1104
1105 static ssize_t ath10k_write_fw_dbglog(struct file *file,
1106                                       const char __user *user_buf,
1107                                       size_t count, loff_t *ppos)
1108 {
1109         struct ath10k *ar = file->private_data;
1110         unsigned long mask;
1111         int ret;
1112
1113         ret = kstrtoul_from_user(user_buf, count, 0, &mask);
1114         if (ret)
1115                 return ret;
1116
1117         mutex_lock(&ar->conf_mutex);
1118
1119         ar->debug.fw_dbglog_mask = mask;
1120
1121         if (ar->state == ATH10K_STATE_ON) {
1122                 ret = ath10k_wmi_dbglog_cfg(ar, ar->debug.fw_dbglog_mask);
1123                 if (ret) {
1124                         ath10k_warn(ar, "dbglog cfg failed from debugfs: %d\n",
1125                                     ret);
1126                         goto exit;
1127                 }
1128         }
1129
1130         ret = count;
1131
1132 exit:
1133         mutex_unlock(&ar->conf_mutex);
1134
1135         return ret;
1136 }
1137
1138 /* TODO:  Would be nice to always support ethtool stats, would need to
1139  * move the stats storage out of ath10k_debug, or always have ath10k_debug
1140  * struct available..
1141  */
1142
1143 /* This generally cooresponds to the debugfs fw_stats file */
1144 static const char ath10k_gstrings_stats[][ETH_GSTRING_LEN] = {
1145         "tx_pkts_nic",
1146         "tx_bytes_nic",
1147         "rx_pkts_nic",
1148         "rx_bytes_nic",
1149         "d_noise_floor",
1150         "d_cycle_count",
1151         "d_phy_error",
1152         "d_rts_bad",
1153         "d_rts_good",
1154         "d_tx_power", /* in .5 dbM I think */
1155         "d_rx_crc_err", /* fcs_bad */
1156         "d_no_beacon",
1157         "d_tx_mpdus_queued",
1158         "d_tx_msdu_queued",
1159         "d_tx_msdu_dropped",
1160         "d_local_enqued",
1161         "d_local_freed",
1162         "d_tx_ppdu_hw_queued",
1163         "d_tx_ppdu_reaped",
1164         "d_tx_fifo_underrun",
1165         "d_tx_ppdu_abort",
1166         "d_tx_mpdu_requed",
1167         "d_tx_excessive_retries",
1168         "d_tx_hw_rate",
1169         "d_tx_dropped_sw_retries",
1170         "d_tx_illegal_rate",
1171         "d_tx_continuous_xretries",
1172         "d_tx_timeout",
1173         "d_tx_mpdu_txop_limit",
1174         "d_pdev_resets",
1175         "d_rx_mid_ppdu_route_change",
1176         "d_rx_status",
1177         "d_rx_extra_frags_ring0",
1178         "d_rx_extra_frags_ring1",
1179         "d_rx_extra_frags_ring2",
1180         "d_rx_extra_frags_ring3",
1181         "d_rx_msdu_htt",
1182         "d_rx_mpdu_htt",
1183         "d_rx_msdu_stack",
1184         "d_rx_mpdu_stack",
1185         "d_rx_phy_err",
1186         "d_rx_phy_err_drops",
1187         "d_rx_mpdu_errors", /* FCS, MIC, ENC */
1188         "d_fw_crash_count",
1189         "d_fw_warm_reset_count",
1190         "d_fw_cold_reset_count",
1191 };
1192
1193 #define ATH10K_SSTATS_LEN ARRAY_SIZE(ath10k_gstrings_stats)
1194
1195 void ath10k_debug_get_et_strings(struct ieee80211_hw *hw,
1196                                  struct ieee80211_vif *vif,
1197                                  u32 sset, u8 *data)
1198 {
1199         if (sset == ETH_SS_STATS)
1200                 memcpy(data, *ath10k_gstrings_stats,
1201                        sizeof(ath10k_gstrings_stats));
1202 }
1203
1204 int ath10k_debug_get_et_sset_count(struct ieee80211_hw *hw,
1205                                    struct ieee80211_vif *vif, int sset)
1206 {
1207         if (sset == ETH_SS_STATS)
1208                 return ATH10K_SSTATS_LEN;
1209
1210         return 0;
1211 }
1212
1213 void ath10k_debug_get_et_stats(struct ieee80211_hw *hw,
1214                                struct ieee80211_vif *vif,
1215                                struct ethtool_stats *stats, u64 *data)
1216 {
1217         struct ath10k *ar = hw->priv;
1218         static const struct ath10k_fw_stats_pdev zero_stats = {};
1219         const struct ath10k_fw_stats_pdev *pdev_stats;
1220         int i = 0, ret;
1221
1222         mutex_lock(&ar->conf_mutex);
1223
1224         if (ar->state == ATH10K_STATE_ON) {
1225                 ret = ath10k_debug_fw_stats_request(ar);
1226                 if (ret) {
1227                         /* just print a warning and try to use older results */
1228                         ath10k_warn(ar,
1229                                     "failed to get fw stats for ethtool: %d\n",
1230                                     ret);
1231                 }
1232         }
1233
1234         pdev_stats = list_first_entry_or_null(&ar->debug.fw_stats.pdevs,
1235                                               struct ath10k_fw_stats_pdev,
1236                                               list);
1237         if (!pdev_stats) {
1238                 /* no results available so just return zeroes */
1239                 pdev_stats = &zero_stats;
1240         }
1241
1242         spin_lock_bh(&ar->data_lock);
1243
1244         data[i++] = pdev_stats->hw_reaped; /* ppdu reaped */
1245         data[i++] = 0; /* tx bytes */
1246         data[i++] = pdev_stats->htt_mpdus;
1247         data[i++] = 0; /* rx bytes */
1248         data[i++] = pdev_stats->ch_noise_floor;
1249         data[i++] = pdev_stats->cycle_count;
1250         data[i++] = pdev_stats->phy_err_count;
1251         data[i++] = pdev_stats->rts_bad;
1252         data[i++] = pdev_stats->rts_good;
1253         data[i++] = pdev_stats->chan_tx_power;
1254         data[i++] = pdev_stats->fcs_bad;
1255         data[i++] = pdev_stats->no_beacons;
1256         data[i++] = pdev_stats->mpdu_enqued;
1257         data[i++] = pdev_stats->msdu_enqued;
1258         data[i++] = pdev_stats->wmm_drop;
1259         data[i++] = pdev_stats->local_enqued;
1260         data[i++] = pdev_stats->local_freed;
1261         data[i++] = pdev_stats->hw_queued;
1262         data[i++] = pdev_stats->hw_reaped;
1263         data[i++] = pdev_stats->underrun;
1264         data[i++] = pdev_stats->tx_abort;
1265         data[i++] = pdev_stats->mpdus_requed;
1266         data[i++] = pdev_stats->tx_ko;
1267         data[i++] = pdev_stats->data_rc;
1268         data[i++] = pdev_stats->sw_retry_failure;
1269         data[i++] = pdev_stats->illgl_rate_phy_err;
1270         data[i++] = pdev_stats->pdev_cont_xretry;
1271         data[i++] = pdev_stats->pdev_tx_timeout;
1272         data[i++] = pdev_stats->txop_ovf;
1273         data[i++] = pdev_stats->pdev_resets;
1274         data[i++] = pdev_stats->mid_ppdu_route_change;
1275         data[i++] = pdev_stats->status_rcvd;
1276         data[i++] = pdev_stats->r0_frags;
1277         data[i++] = pdev_stats->r1_frags;
1278         data[i++] = pdev_stats->r2_frags;
1279         data[i++] = pdev_stats->r3_frags;
1280         data[i++] = pdev_stats->htt_msdus;
1281         data[i++] = pdev_stats->htt_mpdus;
1282         data[i++] = pdev_stats->loc_msdus;
1283         data[i++] = pdev_stats->loc_mpdus;
1284         data[i++] = pdev_stats->phy_errs;
1285         data[i++] = pdev_stats->phy_err_drop;
1286         data[i++] = pdev_stats->mpdu_errs;
1287         data[i++] = ar->stats.fw_crash_counter;
1288         data[i++] = ar->stats.fw_warm_reset_counter;
1289         data[i++] = ar->stats.fw_cold_reset_counter;
1290
1291         spin_unlock_bh(&ar->data_lock);
1292
1293         mutex_unlock(&ar->conf_mutex);
1294
1295         WARN_ON(i != ATH10K_SSTATS_LEN);
1296 }
1297
1298 static const struct file_operations fops_fw_dbglog = {
1299         .read = ath10k_read_fw_dbglog,
1300         .write = ath10k_write_fw_dbglog,
1301         .open = simple_open,
1302         .owner = THIS_MODULE,
1303         .llseek = default_llseek,
1304 };
1305
1306 static int ath10k_debug_cal_data_open(struct inode *inode, struct file *file)
1307 {
1308         struct ath10k *ar = inode->i_private;
1309         void *buf;
1310         u32 hi_addr;
1311         __le32 addr;
1312         int ret;
1313
1314         mutex_lock(&ar->conf_mutex);
1315
1316         if (ar->state != ATH10K_STATE_ON &&
1317             ar->state != ATH10K_STATE_UTF) {
1318                 ret = -ENETDOWN;
1319                 goto err;
1320         }
1321
1322         buf = vmalloc(QCA988X_CAL_DATA_LEN);
1323         if (!buf) {
1324                 ret = -ENOMEM;
1325                 goto err;
1326         }
1327
1328         hi_addr = host_interest_item_address(HI_ITEM(hi_board_data));
1329
1330         ret = ath10k_hif_diag_read(ar, hi_addr, &addr, sizeof(addr));
1331         if (ret) {
1332                 ath10k_warn(ar, "failed to read hi_board_data address: %d\n", ret);
1333                 goto err_vfree;
1334         }
1335
1336         ret = ath10k_hif_diag_read(ar, le32_to_cpu(addr), buf,
1337                                    QCA988X_CAL_DATA_LEN);
1338         if (ret) {
1339                 ath10k_warn(ar, "failed to read calibration data: %d\n", ret);
1340                 goto err_vfree;
1341         }
1342
1343         file->private_data = buf;
1344
1345         mutex_unlock(&ar->conf_mutex);
1346
1347         return 0;
1348
1349 err_vfree:
1350         vfree(buf);
1351
1352 err:
1353         mutex_unlock(&ar->conf_mutex);
1354
1355         return ret;
1356 }
1357
1358 static ssize_t ath10k_debug_cal_data_read(struct file *file,
1359                                           char __user *user_buf,
1360                                           size_t count, loff_t *ppos)
1361 {
1362         void *buf = file->private_data;
1363
1364         return simple_read_from_buffer(user_buf, count, ppos,
1365                                        buf, QCA988X_CAL_DATA_LEN);
1366 }
1367
1368 static int ath10k_debug_cal_data_release(struct inode *inode,
1369                                          struct file *file)
1370 {
1371         vfree(file->private_data);
1372
1373         return 0;
1374 }
1375
1376 static const struct file_operations fops_cal_data = {
1377         .open = ath10k_debug_cal_data_open,
1378         .read = ath10k_debug_cal_data_read,
1379         .release = ath10k_debug_cal_data_release,
1380         .owner = THIS_MODULE,
1381         .llseek = default_llseek,
1382 };
1383
1384 int ath10k_debug_start(struct ath10k *ar)
1385 {
1386         int ret;
1387
1388         lockdep_assert_held(&ar->conf_mutex);
1389
1390         ret = ath10k_debug_htt_stats_req(ar);
1391         if (ret)
1392                 /* continue normally anyway, this isn't serious */
1393                 ath10k_warn(ar, "failed to start htt stats workqueue: %d\n",
1394                             ret);
1395
1396         if (ar->debug.fw_dbglog_mask) {
1397                 ret = ath10k_wmi_dbglog_cfg(ar, ar->debug.fw_dbglog_mask);
1398                 if (ret)
1399                         /* not serious */
1400                         ath10k_warn(ar, "failed to enable dbglog during start: %d",
1401                                     ret);
1402         }
1403
1404         if (ar->debug.pktlog_filter) {
1405                 ret = ath10k_wmi_pdev_pktlog_enable(ar,
1406                                                     ar->debug.pktlog_filter);
1407                 if (ret)
1408                         /* not serious */
1409                         ath10k_warn(ar,
1410                                     "failed to enable pktlog filter %x: %d\n",
1411                                     ar->debug.pktlog_filter, ret);
1412         } else {
1413                 ret = ath10k_wmi_pdev_pktlog_disable(ar);
1414                 if (ret)
1415                         /* not serious */
1416                         ath10k_warn(ar, "failed to disable pktlog: %d\n", ret);
1417         }
1418
1419         return ret;
1420 }
1421
1422 void ath10k_debug_stop(struct ath10k *ar)
1423 {
1424         lockdep_assert_held(&ar->conf_mutex);
1425
1426         /* Must not use _sync to avoid deadlock, we do that in
1427          * ath10k_debug_destroy(). The check for htt_stats_mask is to avoid
1428          * warning from del_timer(). */
1429         if (ar->debug.htt_stats_mask != 0)
1430                 cancel_delayed_work(&ar->debug.htt_stats_dwork);
1431
1432         ar->debug.htt_max_amsdu = 0;
1433         ar->debug.htt_max_ampdu = 0;
1434
1435         ath10k_wmi_pdev_pktlog_disable(ar);
1436 }
1437
1438 static ssize_t ath10k_write_simulate_radar(struct file *file,
1439                                            const char __user *user_buf,
1440                                            size_t count, loff_t *ppos)
1441 {
1442         struct ath10k *ar = file->private_data;
1443
1444         ieee80211_radar_detected(ar->hw);
1445
1446         return count;
1447 }
1448
1449 static const struct file_operations fops_simulate_radar = {
1450         .write = ath10k_write_simulate_radar,
1451         .open = simple_open,
1452         .owner = THIS_MODULE,
1453         .llseek = default_llseek,
1454 };
1455
1456 #define ATH10K_DFS_STAT(s, p) (\
1457         len += scnprintf(buf + len, size - len, "%-28s : %10u\n", s, \
1458                          ar->debug.dfs_stats.p))
1459
1460 #define ATH10K_DFS_POOL_STAT(s, p) (\
1461         len += scnprintf(buf + len, size - len, "%-28s : %10u\n", s, \
1462                          ar->debug.dfs_pool_stats.p))
1463
1464 static ssize_t ath10k_read_dfs_stats(struct file *file, char __user *user_buf,
1465                                      size_t count, loff_t *ppos)
1466 {
1467         int retval = 0, len = 0;
1468         const int size = 8000;
1469         struct ath10k *ar = file->private_data;
1470         char *buf;
1471
1472         buf = kzalloc(size, GFP_KERNEL);
1473         if (buf == NULL)
1474                 return -ENOMEM;
1475
1476         if (!ar->dfs_detector) {
1477                 len += scnprintf(buf + len, size - len, "DFS not enabled\n");
1478                 goto exit;
1479         }
1480
1481         ar->debug.dfs_pool_stats =
1482                         ar->dfs_detector->get_stats(ar->dfs_detector);
1483
1484         len += scnprintf(buf + len, size - len, "Pulse detector statistics:\n");
1485
1486         ATH10K_DFS_STAT("reported phy errors", phy_errors);
1487         ATH10K_DFS_STAT("pulse events reported", pulses_total);
1488         ATH10K_DFS_STAT("DFS pulses detected", pulses_detected);
1489         ATH10K_DFS_STAT("DFS pulses discarded", pulses_discarded);
1490         ATH10K_DFS_STAT("Radars detected", radar_detected);
1491
1492         len += scnprintf(buf + len, size - len, "Global Pool statistics:\n");
1493         ATH10K_DFS_POOL_STAT("Pool references", pool_reference);
1494         ATH10K_DFS_POOL_STAT("Pulses allocated", pulse_allocated);
1495         ATH10K_DFS_POOL_STAT("Pulses alloc error", pulse_alloc_error);
1496         ATH10K_DFS_POOL_STAT("Pulses in use", pulse_used);
1497         ATH10K_DFS_POOL_STAT("Seqs. allocated", pseq_allocated);
1498         ATH10K_DFS_POOL_STAT("Seqs. alloc error", pseq_alloc_error);
1499         ATH10K_DFS_POOL_STAT("Seqs. in use", pseq_used);
1500
1501 exit:
1502         if (len > size)
1503                 len = size;
1504
1505         retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
1506         kfree(buf);
1507
1508         return retval;
1509 }
1510
1511 static const struct file_operations fops_dfs_stats = {
1512         .read = ath10k_read_dfs_stats,
1513         .open = simple_open,
1514         .owner = THIS_MODULE,
1515         .llseek = default_llseek,
1516 };
1517
1518 static ssize_t ath10k_write_pktlog_filter(struct file *file,
1519                                           const char __user *ubuf,
1520                                           size_t count, loff_t *ppos)
1521 {
1522         struct ath10k *ar = file->private_data;
1523         u32 filter;
1524         int ret;
1525
1526         if (kstrtouint_from_user(ubuf, count, 0, &filter))
1527                 return -EINVAL;
1528
1529         mutex_lock(&ar->conf_mutex);
1530
1531         if (ar->state != ATH10K_STATE_ON) {
1532                 ar->debug.pktlog_filter = filter;
1533                 ret = count;
1534                 goto out;
1535         }
1536
1537         if (filter && (filter != ar->debug.pktlog_filter)) {
1538                 ret = ath10k_wmi_pdev_pktlog_enable(ar, filter);
1539                 if (ret) {
1540                         ath10k_warn(ar, "failed to enable pktlog filter %x: %d\n",
1541                                     ar->debug.pktlog_filter, ret);
1542                         goto out;
1543                 }
1544         } else {
1545                 ret = ath10k_wmi_pdev_pktlog_disable(ar);
1546                 if (ret) {
1547                         ath10k_warn(ar, "failed to disable pktlog: %d\n", ret);
1548                         goto out;
1549                 }
1550         }
1551
1552         ar->debug.pktlog_filter = filter;
1553         ret = count;
1554
1555 out:
1556         mutex_unlock(&ar->conf_mutex);
1557         return ret;
1558 }
1559
1560 static ssize_t ath10k_read_pktlog_filter(struct file *file, char __user *ubuf,
1561                                          size_t count, loff_t *ppos)
1562 {
1563         char buf[32];
1564         struct ath10k *ar = file->private_data;
1565         int len = 0;
1566
1567         mutex_lock(&ar->conf_mutex);
1568         len = scnprintf(buf, sizeof(buf) - len, "%08x\n",
1569                         ar->debug.pktlog_filter);
1570         mutex_unlock(&ar->conf_mutex);
1571
1572         return simple_read_from_buffer(ubuf, count, ppos, buf, len);
1573 }
1574
1575 static const struct file_operations fops_pktlog_filter = {
1576         .read = ath10k_read_pktlog_filter,
1577         .write = ath10k_write_pktlog_filter,
1578         .open = simple_open
1579 };
1580
1581 int ath10k_debug_create(struct ath10k *ar)
1582 {
1583         ar->debug.fw_crash_data = vzalloc(sizeof(*ar->debug.fw_crash_data));
1584         if (!ar->debug.fw_crash_data)
1585                 return -ENOMEM;
1586
1587         INIT_LIST_HEAD(&ar->debug.fw_stats.pdevs);
1588         INIT_LIST_HEAD(&ar->debug.fw_stats.peers);
1589
1590         return 0;
1591 }
1592
1593 void ath10k_debug_destroy(struct ath10k *ar)
1594 {
1595         vfree(ar->debug.fw_crash_data);
1596         ar->debug.fw_crash_data = NULL;
1597
1598         ath10k_debug_fw_stats_reset(ar);
1599 }
1600
1601 int ath10k_debug_register(struct ath10k *ar)
1602 {
1603         ar->debug.debugfs_phy = debugfs_create_dir("ath10k",
1604                                                    ar->hw->wiphy->debugfsdir);
1605         if (IS_ERR_OR_NULL(ar->debug.debugfs_phy)) {
1606                 if (IS_ERR(ar->debug.debugfs_phy))
1607                         return PTR_ERR(ar->debug.debugfs_phy);
1608
1609                 return -ENOMEM;
1610         }
1611
1612         INIT_DELAYED_WORK(&ar->debug.htt_stats_dwork,
1613                           ath10k_debug_htt_stats_dwork);
1614
1615         init_completion(&ar->debug.fw_stats_complete);
1616
1617         debugfs_create_file("fw_stats", S_IRUSR, ar->debug.debugfs_phy, ar,
1618                             &fops_fw_stats);
1619
1620         debugfs_create_file("fw_reset_stats", S_IRUSR, ar->debug.debugfs_phy,
1621                             ar, &fops_fw_reset_stats);
1622
1623         debugfs_create_file("wmi_services", S_IRUSR, ar->debug.debugfs_phy, ar,
1624                             &fops_wmi_services);
1625
1626         debugfs_create_file("simulate_fw_crash", S_IRUSR, ar->debug.debugfs_phy,
1627                             ar, &fops_simulate_fw_crash);
1628
1629         debugfs_create_file("fw_crash_dump", S_IRUSR, ar->debug.debugfs_phy,
1630                             ar, &fops_fw_crash_dump);
1631
1632         debugfs_create_file("chip_id", S_IRUSR, ar->debug.debugfs_phy,
1633                             ar, &fops_chip_id);
1634
1635         debugfs_create_file("htt_stats_mask", S_IRUSR, ar->debug.debugfs_phy,
1636                             ar, &fops_htt_stats_mask);
1637
1638         debugfs_create_file("htt_max_amsdu_ampdu", S_IRUSR | S_IWUSR,
1639                             ar->debug.debugfs_phy, ar,
1640                             &fops_htt_max_amsdu_ampdu);
1641
1642         debugfs_create_file("fw_dbglog", S_IRUSR, ar->debug.debugfs_phy,
1643                             ar, &fops_fw_dbglog);
1644
1645         debugfs_create_file("cal_data", S_IRUSR, ar->debug.debugfs_phy,
1646                             ar, &fops_cal_data);
1647
1648         if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED)) {
1649                 debugfs_create_file("dfs_simulate_radar", S_IWUSR,
1650                                     ar->debug.debugfs_phy, ar,
1651                                     &fops_simulate_radar);
1652
1653                 debugfs_create_bool("dfs_block_radar_events", S_IWUSR,
1654                                     ar->debug.debugfs_phy,
1655                                     &ar->dfs_block_radar_events);
1656
1657                 debugfs_create_file("dfs_stats", S_IRUSR,
1658                                     ar->debug.debugfs_phy, ar,
1659                                     &fops_dfs_stats);
1660         }
1661
1662         debugfs_create_file("pktlog_filter", S_IRUGO | S_IWUSR,
1663                             ar->debug.debugfs_phy, ar, &fops_pktlog_filter);
1664
1665         return 0;
1666 }
1667
1668 void ath10k_debug_unregister(struct ath10k *ar)
1669 {
1670         cancel_delayed_work_sync(&ar->debug.htt_stats_dwork);
1671 }
1672
1673 #endif /* CONFIG_ATH10K_DEBUGFS */
1674
1675 #ifdef CONFIG_ATH10K_DEBUG
1676 void ath10k_dbg(struct ath10k *ar, enum ath10k_debug_mask mask,
1677                 const char *fmt, ...)
1678 {
1679         struct va_format vaf;
1680         va_list args;
1681
1682         va_start(args, fmt);
1683
1684         vaf.fmt = fmt;
1685         vaf.va = &args;
1686
1687         if (ath10k_debug_mask & mask)
1688                 dev_printk(KERN_DEBUG, ar->dev, "%pV", &vaf);
1689
1690         trace_ath10k_log_dbg(ar, mask, &vaf);
1691
1692         va_end(args);
1693 }
1694 EXPORT_SYMBOL(ath10k_dbg);
1695
1696 void ath10k_dbg_dump(struct ath10k *ar,
1697                      enum ath10k_debug_mask mask,
1698                      const char *msg, const char *prefix,
1699                      const void *buf, size_t len)
1700 {
1701         char linebuf[256];
1702         unsigned int linebuflen;
1703         const void *ptr;
1704
1705         if (ath10k_debug_mask & mask) {
1706                 if (msg)
1707                         ath10k_dbg(ar, mask, "%s\n", msg);
1708
1709                 for (ptr = buf; (ptr - buf) < len; ptr += 16) {
1710                         linebuflen = 0;
1711                         linebuflen += scnprintf(linebuf + linebuflen,
1712                                                 sizeof(linebuf) - linebuflen,
1713                                                 "%s%08x: ",
1714                                                 (prefix ? prefix : ""),
1715                                                 (unsigned int)(ptr - buf));
1716                         hex_dump_to_buffer(ptr, len - (ptr - buf), 16, 1,
1717                                            linebuf + linebuflen,
1718                                            sizeof(linebuf) - linebuflen, true);
1719                         dev_printk(KERN_DEBUG, ar->dev, "%s\n", linebuf);
1720                 }
1721         }
1722
1723         /* tracing code doesn't like null strings :/ */
1724         trace_ath10k_log_dbg_dump(ar, msg ? msg : "", prefix ? prefix : "",
1725                                   buf, len);
1726 }
1727 EXPORT_SYMBOL(ath10k_dbg_dump);
1728
1729 #endif /* CONFIG_ATH10K_DEBUG */