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
  21 #include "core.h"
  22 #include "debug.h"
  23
  24 /* ms */
  25 #define ATH10K_DEBUG_HTT_STATS_INTERVAL 1000
  26
  27 static int ath10k_printk(const char *level, const char *fmt, ...)
  28 {
  29         struct va_format vaf;
  30         va_list args;
  31         int rtn;
  32
  33         va_start(args, fmt);
  34
  35         vaf.fmt = fmt;
  36         vaf.va = &args;
  37
  38         rtn = printk("%sath10k: %pV", level, &vaf);
  39
  40         va_end(args);
  41
  42         return rtn;
  43 }
  44
  45 int ath10k_info(const char *fmt, ...)
  46 {
  47         struct va_format vaf = {
  48                 .fmt = fmt,
  49         };
  50         va_list args;
  51         int ret;
  52
  53         va_start(args, fmt);
  54         vaf.va = &args;
  55         ret = ath10k_printk(KERN_INFO, "%pV", &vaf);
  56         trace_ath10k_log_info(&vaf);
  57         va_end(args);
  58
  59         return ret;
  60 }
  61 EXPORT_SYMBOL(ath10k_info);
  62
  63 int ath10k_err(const char *fmt, ...)
  64 {
  65         struct va_format vaf = {
  66                 .fmt = fmt,
  67         };
  68         va_list args;
  69         int ret;
  70
  71         va_start(args, fmt);
  72         vaf.va = &args;
  73         ret = ath10k_printk(KERN_ERR, "%pV", &vaf);
  74         trace_ath10k_log_err(&vaf);
  75         va_end(args);
  76
  77         return ret;
  78 }
  79 EXPORT_SYMBOL(ath10k_err);
  80
  81 int ath10k_warn(const char *fmt, ...)
  82 {
  83         struct va_format vaf = {
  84                 .fmt = fmt,
  85         };
  86         va_list args;
  87         int ret = 0;
  88
  89         va_start(args, fmt);
  90         vaf.va = &args;
  91
  92         if (net_ratelimit())
  93                 ret = ath10k_printk(KERN_WARNING, "%pV", &vaf);
  94
  95         trace_ath10k_log_warn(&vaf);
  96
  97         va_end(args);
  98
  99         return ret;
 100 }
 101 EXPORT_SYMBOL(ath10k_warn);
 102
 103 #ifdef CONFIG_ATH10K_DEBUGFS
 104
 105 void ath10k_debug_read_service_map(struct ath10k *ar,
 106                                    void *service_map,
 107                                    size_t map_size)
 108 {
 109         memcpy(ar->debug.wmi_service_bitmap, service_map, map_size);
 110 }
 111
 112 static ssize_t ath10k_read_wmi_services(struct file *file,
 113                                         char __user *user_buf,
 114                                         size_t count, loff_t *ppos)
 115 {
 116         struct ath10k *ar = file->private_data;
 117         char *buf;
 118         unsigned int len = 0, buf_len = 1500;
 119         const char *status;
 120         ssize_t ret_cnt;
 121         int i;
 122
 123         buf = kzalloc(buf_len, GFP_KERNEL);
 124         if (!buf)
 125                 return -ENOMEM;
 126
 127         mutex_lock(&ar->conf_mutex);
 128
 129         if (len > buf_len)
 130                 len = buf_len;
 131
 132         for (i = 0; i < WMI_SERVICE_LAST; i++) {
 133                 if (WMI_SERVICE_IS_ENABLED(ar->debug.wmi_service_bitmap, i))
 134                         status = "enabled";
 135                 else
 136                         status = "disabled";
 137
 138                 len += scnprintf(buf + len, buf_len - len,
 139                                  "0x%02x - %20s - %s\n",
 140                                  i, wmi_service_name(i), status);
 141         }
 142
 143         ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
 144
 145         mutex_unlock(&ar->conf_mutex);
 146
 147         kfree(buf);
 148         return ret_cnt;
 149 }
 150
 151 static const struct file_operations fops_wmi_services = {
 152         .read = ath10k_read_wmi_services,
 153         .open = simple_open,
 154         .owner = THIS_MODULE,
 155         .llseek = default_llseek,
 156 };
 157
 158 void ath10k_debug_read_target_stats(struct ath10k *ar,
 159                                     struct wmi_stats_event *ev)
 160 {
 161         u8 *tmp = ev->data;
 162         struct ath10k_target_stats *stats;
 163         int num_pdev_stats, num_vdev_stats, num_peer_stats;
 164         struct wmi_pdev_stats *ps;
 165         int i;
 166
 167         spin_lock_bh(&ar->data_lock);
 168
 169         stats = &ar->debug.target_stats;
 170
 171         num_pdev_stats = __le32_to_cpu(ev->num_pdev_stats); /* 0 or 1 */
 172         num_vdev_stats = __le32_to_cpu(ev->num_vdev_stats); /* 0 or max vdevs */
 173         num_peer_stats = __le32_to_cpu(ev->num_peer_stats); /* 0 or max peers */
 174
 175         if (num_pdev_stats) {
 176                 ps = (struct wmi_pdev_stats *)tmp;
 177
 178                 stats->ch_noise_floor = __le32_to_cpu(ps->chan_nf);
 179                 stats->tx_frame_count = __le32_to_cpu(ps->tx_frame_count);
 180                 stats->rx_frame_count = __le32_to_cpu(ps->rx_frame_count);
 181                 stats->rx_clear_count = __le32_to_cpu(ps->rx_clear_count);
 182                 stats->cycle_count = __le32_to_cpu(ps->cycle_count);
 183                 stats->phy_err_count = __le32_to_cpu(ps->phy_err_count);
 184                 stats->chan_tx_power = __le32_to_cpu(ps->chan_tx_pwr);
 185
 186                 stats->comp_queued = __le32_to_cpu(ps->wal.tx.comp_queued);
 187                 stats->comp_delivered =
 188                         __le32_to_cpu(ps->wal.tx.comp_delivered);
 189                 stats->msdu_enqued = __le32_to_cpu(ps->wal.tx.msdu_enqued);
 190                 stats->mpdu_enqued = __le32_to_cpu(ps->wal.tx.mpdu_enqued);
 191                 stats->wmm_drop = __le32_to_cpu(ps->wal.tx.wmm_drop);
 192                 stats->local_enqued = __le32_to_cpu(ps->wal.tx.local_enqued);
 193                 stats->local_freed = __le32_to_cpu(ps->wal.tx.local_freed);
 194                 stats->hw_queued = __le32_to_cpu(ps->wal.tx.hw_queued);
 195                 stats->hw_reaped = __le32_to_cpu(ps->wal.tx.hw_reaped);
 196                 stats->underrun = __le32_to_cpu(ps->wal.tx.underrun);
 197                 stats->tx_abort = __le32_to_cpu(ps->wal.tx.tx_abort);
 198                 stats->mpdus_requed = __le32_to_cpu(ps->wal.tx.mpdus_requed);
 199                 stats->tx_ko = __le32_to_cpu(ps->wal.tx.tx_ko);
 200                 stats->data_rc = __le32_to_cpu(ps->wal.tx.data_rc);
 201                 stats->self_triggers = __le32_to_cpu(ps->wal.tx.self_triggers);
 202                 stats->sw_retry_failure =
 203                         __le32_to_cpu(ps->wal.tx.sw_retry_failure);
 204                 stats->illgl_rate_phy_err =
 205                         __le32_to_cpu(ps->wal.tx.illgl_rate_phy_err);
 206                 stats->pdev_cont_xretry =
 207                         __le32_to_cpu(ps->wal.tx.pdev_cont_xretry);
 208                 stats->pdev_tx_timeout =
 209                         __le32_to_cpu(ps->wal.tx.pdev_tx_timeout);
 210                 stats->pdev_resets = __le32_to_cpu(ps->wal.tx.pdev_resets);
 211                 stats->phy_underrun = __le32_to_cpu(ps->wal.tx.phy_underrun);
 212                 stats->txop_ovf = __le32_to_cpu(ps->wal.tx.txop_ovf);
 213
 214                 stats->mid_ppdu_route_change =
 215                         __le32_to_cpu(ps->wal.rx.mid_ppdu_route_change);
 216                 stats->status_rcvd = __le32_to_cpu(ps->wal.rx.status_rcvd);
 217                 stats->r0_frags = __le32_to_cpu(ps->wal.rx.r0_frags);
 218                 stats->r1_frags = __le32_to_cpu(ps->wal.rx.r1_frags);
 219                 stats->r2_frags = __le32_to_cpu(ps->wal.rx.r2_frags);
 220                 stats->r3_frags = __le32_to_cpu(ps->wal.rx.r3_frags);
 221                 stats->htt_msdus = __le32_to_cpu(ps->wal.rx.htt_msdus);
 222                 stats->htt_mpdus = __le32_to_cpu(ps->wal.rx.htt_mpdus);
 223                 stats->loc_msdus = __le32_to_cpu(ps->wal.rx.loc_msdus);
 224                 stats->loc_mpdus = __le32_to_cpu(ps->wal.rx.loc_mpdus);
 225                 stats->oversize_amsdu =
 226                         __le32_to_cpu(ps->wal.rx.oversize_amsdu);
 227                 stats->phy_errs = __le32_to_cpu(ps->wal.rx.phy_errs);
 228                 stats->phy_err_drop = __le32_to_cpu(ps->wal.rx.phy_err_drop);
 229                 stats->mpdu_errs = __le32_to_cpu(ps->wal.rx.mpdu_errs);
 230
 231                 tmp += sizeof(struct wmi_pdev_stats);
 232         }
 233
 234         /* 0 or max vdevs */
 235         /* Currently firmware does not support VDEV stats */
 236         if (num_vdev_stats) {
 237                 struct wmi_vdev_stats *vdev_stats;
 238
 239                 for (i = 0; i < num_vdev_stats; i++) {
 240                         vdev_stats = (struct wmi_vdev_stats *)tmp;
 241                         tmp += sizeof(struct wmi_vdev_stats);
 242                 }
 243         }
 244
 245         if (num_peer_stats) {
 246                 struct wmi_peer_stats *peer_stats;
 247                 struct ath10k_peer_stat *s;
 248
 249                 stats->peers = num_peer_stats;
 250
 251                 for (i = 0; i < num_peer_stats; i++) {
 252                         peer_stats = (struct wmi_peer_stats *)tmp;
 253                         s = &stats->peer_stat[i];
 254
 255                         WMI_MAC_ADDR_TO_CHAR_ARRAY(&peer_stats->peer_macaddr,
 256                                                    s->peer_macaddr);
 257                         s->peer_rssi = __le32_to_cpu(peer_stats->peer_rssi);
 258                         s->peer_tx_rate =
 259                                 __le32_to_cpu(peer_stats->peer_tx_rate);
 260
 261                         tmp += sizeof(struct wmi_peer_stats);
 262                 }
 263         }
 264
 265         spin_unlock_bh(&ar->data_lock);
 266         complete(&ar->debug.event_stats_compl);
 267 }
 268
 269 static ssize_t ath10k_read_fw_stats(struct file *file, char __user *user_buf,
 270                                     size_t count, loff_t *ppos)
 271 {
 272         struct ath10k *ar = file->private_data;
 273         struct ath10k_target_stats *fw_stats;
 274         char *buf = NULL;
 275         unsigned int len = 0, buf_len = 2500;
 276         ssize_t ret_cnt = 0;
 277         long left;
 278         int i;
 279         int ret;
 280
 281         fw_stats = &ar->debug.target_stats;
 282
 283         mutex_lock(&ar->conf_mutex);
 284
 285         if (ar->state != ATH10K_STATE_ON)
 286                 goto exit;
 287
 288         buf = kzalloc(buf_len, GFP_KERNEL);
 289         if (!buf)
 290                 goto exit;
 291
 292         ret = ath10k_wmi_request_stats(ar, WMI_REQUEST_PEER_STAT);
 293         if (ret) {
 294                 ath10k_warn("could not request stats (%d)\n", ret);
 295                 goto exit;
 296         }
 297
 298         left = wait_for_completion_timeout(&ar->debug.event_stats_compl, 1*HZ);
 299         if (left <= 0)
 300                 goto exit;
 301
 302         spin_lock_bh(&ar->data_lock);
 303         len += scnprintf(buf + len, buf_len - len, "\n");
 304         len += scnprintf(buf + len, buf_len - len, "%30s\n",
 305                          "ath10k PDEV stats");
 306         len += scnprintf(buf + len, buf_len - len, "%30s\n\n",
 307                                  "=================");
 308
 309         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 310                          "Channel noise floor", fw_stats->ch_noise_floor);
 311         len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
 312                          "Channel TX power", fw_stats->chan_tx_power);
 313         len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
 314                          "TX frame count", fw_stats->tx_frame_count);
 315         len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
 316                          "RX frame count", fw_stats->rx_frame_count);
 317         len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
 318                          "RX clear count", fw_stats->rx_clear_count);
 319         len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
 320                          "Cycle count", fw_stats->cycle_count);
 321         len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
 322                          "PHY error count", fw_stats->phy_err_count);
 323
 324         len += scnprintf(buf + len, buf_len - len, "\n");
 325         len += scnprintf(buf + len, buf_len - len, "%30s\n",
 326                          "ath10k PDEV TX stats");
 327         len += scnprintf(buf + len, buf_len - len, "%30s\n\n",
 328                                  "=================");
 329
 330         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 331                          "HTT cookies queued", fw_stats->comp_queued);
 332         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 333                          "HTT cookies disp.", fw_stats->comp_delivered);
 334         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 335                          "MSDU queued", fw_stats->msdu_enqued);
 336         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 337                          "MPDU queued", fw_stats->mpdu_enqued);
 338         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 339                          "MSDUs dropped", fw_stats->wmm_drop);
 340         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 341                          "Local enqued", fw_stats->local_enqued);
 342         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 343                          "Local freed", fw_stats->local_freed);
 344         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 345                          "HW queued", fw_stats->hw_queued);
 346         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 347                          "PPDUs reaped", fw_stats->hw_reaped);
 348         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 349                          "Num underruns", fw_stats->underrun);
 350         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 351                          "PPDUs cleaned", fw_stats->tx_abort);
 352         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 353                          "MPDUs requed", fw_stats->mpdus_requed);
 354         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 355                          "Excessive retries", fw_stats->tx_ko);
 356         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 357                          "HW rate", fw_stats->data_rc);
 358         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 359                          "Sched self tiggers", fw_stats->self_triggers);
 360         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 361                          "Dropped due to SW retries",
 362                          fw_stats->sw_retry_failure);
 363         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 364                          "Illegal rate phy errors",
 365                          fw_stats->illgl_rate_phy_err);
 366         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 367                          "Pdev continous xretry", fw_stats->pdev_cont_xretry);
 368         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 369                          "TX timeout", fw_stats->pdev_tx_timeout);
 370         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 371                          "PDEV resets", fw_stats->pdev_resets);
 372         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 373                          "PHY underrun", fw_stats->phy_underrun);
 374         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 375                          "MPDU is more than txop limit", fw_stats->txop_ovf);
 376
 377         len += scnprintf(buf + len, buf_len - len, "\n");
 378         len += scnprintf(buf + len, buf_len - len, "%30s\n",
 379                          "ath10k PDEV RX stats");
 380         len += scnprintf(buf + len, buf_len - len, "%30s\n\n",
 381                                  "=================");
 382
 383         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 384                          "Mid PPDU route change",
 385                          fw_stats->mid_ppdu_route_change);
 386         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 387                          "Tot. number of statuses", fw_stats->status_rcvd);
 388         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 389                          "Extra frags on rings 0", fw_stats->r0_frags);
 390         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 391                          "Extra frags on rings 1", fw_stats->r1_frags);
 392         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 393                          "Extra frags on rings 2", fw_stats->r2_frags);
 394         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 395                          "Extra frags on rings 3", fw_stats->r3_frags);
 396         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 397                          "MSDUs delivered to HTT", fw_stats->htt_msdus);
 398         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 399                          "MPDUs delivered to HTT", fw_stats->htt_mpdus);
 400         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 401                          "MSDUs delivered to stack", fw_stats->loc_msdus);
 402         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 403                          "MPDUs delivered to stack", fw_stats->loc_mpdus);
 404         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 405                          "Oversized AMSUs", fw_stats->oversize_amsdu);
 406         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 407                          "PHY errors", fw_stats->phy_errs);
 408         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 409                          "PHY errors drops", fw_stats->phy_err_drop);
 410         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 411                          "MPDU errors (FCS, MIC, ENC)", fw_stats->mpdu_errs);
 412
 413         len += scnprintf(buf + len, buf_len - len, "\n");
 414         len += scnprintf(buf + len, buf_len - len, "%30s\n",
 415                          "ath10k PEER stats");
 416         len += scnprintf(buf + len, buf_len - len, "%30s\n\n",
 417                                  "=================");
 418
 419         for (i = 0; i < fw_stats->peers; i++) {
 420                 len += scnprintf(buf + len, buf_len - len, "%30s %pM\n",
 421                                  "Peer MAC address",
 422                                  fw_stats->peer_stat[i].peer_macaddr);
 423                 len += scnprintf(buf + len, buf_len - len, "%30s %u\n",
 424                                  "Peer RSSI", fw_stats->peer_stat[i].peer_rssi);
 425                 len += scnprintf(buf + len, buf_len - len, "%30s %u\n",
 426                                  "Peer TX rate",
 427                                  fw_stats->peer_stat[i].peer_tx_rate);
 428                 len += scnprintf(buf + len, buf_len - len, "\n");
 429         }
 430         spin_unlock_bh(&ar->data_lock);
 431
 432         if (len > buf_len)
 433                 len = buf_len;
 434
 435         ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
 436
 437 exit:
 438         mutex_unlock(&ar->conf_mutex);
 439         kfree(buf);
 440         return ret_cnt;
 441 }
 442
 443 static const struct file_operations fops_fw_stats = {
 444         .read = ath10k_read_fw_stats,
 445         .open = simple_open,
 446         .owner = THIS_MODULE,
 447         .llseek = default_llseek,
 448 };
 449
 450 static ssize_t ath10k_read_simulate_fw_crash(struct file *file,
 451                                              char __user *user_buf,
 452                                              size_t count, loff_t *ppos)
 453 {
 454         const char buf[] = "To simulate firmware crash write the keyword"
 455                            " `crash` to this file.\nThis will force firmware"
 456                            " to report a crash to the host system.\n";
 457         return simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
 458 }
 459
 460 static ssize_t ath10k_write_simulate_fw_crash(struct file *file,
 461                                               const char __user *user_buf,
 462                                               size_t count, loff_t *ppos)
 463 {
 464         struct ath10k *ar = file->private_data;
 465         char buf[32] = {};
 466         int ret;
 467
 468         mutex_lock(&ar->conf_mutex);
 469
 470         simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, user_buf, count);
 471         if (strcmp(buf, "crash") && strcmp(buf, "crash\n")) {
 472                 ret = -EINVAL;
 473                 goto exit;
 474         }
 475
 476         if (ar->state != ATH10K_STATE_ON &&
 477             ar->state != ATH10K_STATE_RESTARTED) {
 478                 ret = -ENETDOWN;
 479                 goto exit;
 480         }
 481
 482         ath10k_info("simulating firmware crash\n");
 483
 484         ret = ath10k_wmi_force_fw_hang(ar, WMI_FORCE_FW_HANG_ASSERT, 0);
 485         if (ret)
 486                 ath10k_warn("failed to force fw hang (%d)\n", ret);
 487
 488         if (ret == 0)
 489                 ret = count;
 490
 491 exit:
 492         mutex_unlock(&ar->conf_mutex);
 493         return ret;
 494 }
 495
 496 static const struct file_operations fops_simulate_fw_crash = {
 497         .read = ath10k_read_simulate_fw_crash,
 498         .write = ath10k_write_simulate_fw_crash,
 499         .open = simple_open,
 500         .owner = THIS_MODULE,
 501         .llseek = default_llseek,
 502 };
 503
 504 static ssize_t ath10k_read_chip_id(struct file *file, char __user *user_buf,
 505                                    size_t count, loff_t *ppos)
 506 {
 507         struct ath10k *ar = file->private_data;
 508         unsigned int len;
 509         char buf[50];
 510
 511         len = scnprintf(buf, sizeof(buf), "0x%08x\n", ar->chip_id);
 512
 513         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 514 }
 515
 516 static const struct file_operations fops_chip_id = {
 517         .read = ath10k_read_chip_id,
 518         .open = simple_open,
 519         .owner = THIS_MODULE,
 520         .llseek = default_llseek,
 521 };
 522
 523 static int ath10k_debug_htt_stats_req(struct ath10k *ar)
 524 {
 525         u64 cookie;
 526         int ret;
 527
 528         lockdep_assert_held(&ar->conf_mutex);
 529
 530         if (ar->debug.htt_stats_mask == 0)
 531                 /* htt stats are disabled */
 532                 return 0;
 533
 534         if (ar->state != ATH10K_STATE_ON)
 535                 return 0;
 536
 537         cookie = get_jiffies_64();
 538
 539         ret = ath10k_htt_h2t_stats_req(&ar->htt, ar->debug.htt_stats_mask,
 540                                        cookie);
 541         if (ret) {
 542                 ath10k_warn("failed to send htt stats request: %d\n", ret);
 543                 return ret;
 544         }
 545
 546         queue_delayed_work(ar->workqueue, &ar->debug.htt_stats_dwork,
 547                            msecs_to_jiffies(ATH10K_DEBUG_HTT_STATS_INTERVAL));
 548
 549         return 0;
 550 }
 551
 552 static void ath10k_debug_htt_stats_dwork(struct work_struct *work)
 553 {
 554         struct ath10k *ar = container_of(work, struct ath10k,
 555                                          debug.htt_stats_dwork.work);
 556
 557         mutex_lock(&ar->conf_mutex);
 558
 559         ath10k_debug_htt_stats_req(ar);
 560
 561         mutex_unlock(&ar->conf_mutex);
 562 }
 563
 564 static ssize_t ath10k_read_htt_stats_mask(struct file *file,
 565                                             char __user *user_buf,
 566                                             size_t count, loff_t *ppos)
 567 {
 568         struct ath10k *ar = file->private_data;
 569         char buf[32];
 570         unsigned int len;
 571
 572         len = scnprintf(buf, sizeof(buf), "%lu\n", ar->debug.htt_stats_mask);
 573
 574         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 575 }
 576
 577 static ssize_t ath10k_write_htt_stats_mask(struct file *file,
 578                                              const char __user *user_buf,
 579                                              size_t count, loff_t *ppos)
 580 {
 581         struct ath10k *ar = file->private_data;
 582         unsigned long mask;
 583         int ret;
 584
 585         ret = kstrtoul_from_user(user_buf, count, 0, &mask);
 586         if (ret)
 587                 return ret;
 588
 589         /* max 8 bit masks (for now) */
 590         if (mask > 0xff)
 591                 return -E2BIG;
 592
 593         mutex_lock(&ar->conf_mutex);
 594
 595         ar->debug.htt_stats_mask = mask;
 596
 597         ret = ath10k_debug_htt_stats_req(ar);
 598         if (ret)
 599                 goto out;
 600
 601         ret = count;
 602
 603 out:
 604         mutex_unlock(&ar->conf_mutex);
 605
 606         return ret;
 607 }
 608
 609 static const struct file_operations fops_htt_stats_mask = {
 610         .read = ath10k_read_htt_stats_mask,
 611         .write = ath10k_write_htt_stats_mask,
 612         .open = simple_open,
 613         .owner = THIS_MODULE,
 614         .llseek = default_llseek,
 615 };
 616
 617 int ath10k_debug_start(struct ath10k *ar)
 618 {
 619         int ret;
 620
 621         lockdep_assert_held(&ar->conf_mutex);
 622
 623         ret = ath10k_debug_htt_stats_req(ar);
 624         if (ret)
 625                 /* continue normally anyway, this isn't serious */
 626                 ath10k_warn("failed to start htt stats workqueue: %d\n", ret);
 627
 628         return 0;
 629 }
 630
 631 void ath10k_debug_stop(struct ath10k *ar)
 632 {
 633         lockdep_assert_held(&ar->conf_mutex);
 634
 635         /* Must not use _sync to avoid deadlock, we do that in
 636          * ath10k_debug_destroy(). The check for htt_stats_mask is to avoid
 637          * warning from del_timer(). */
 638         if (ar->debug.htt_stats_mask != 0)
 639                 cancel_delayed_work(&ar->debug.htt_stats_dwork);
 640 }
 641
 642 static ssize_t ath10k_write_simulate_radar(struct file *file,
 643                                            const char __user *user_buf,
 644                                            size_t count, loff_t *ppos)
 645 {
 646         struct ath10k *ar = file->private_data;
 647
 648         ieee80211_radar_detected(ar->hw);
 649
 650         return count;
 651 }
 652
 653 static const struct file_operations fops_simulate_radar = {
 654         .write = ath10k_write_simulate_radar,
 655         .open = simple_open,
 656         .owner = THIS_MODULE,
 657         .llseek = default_llseek,
 658 };
 659
 660 #define ATH10K_DFS_STAT(s, p) (\
 661         len += scnprintf(buf + len, size - len, "%-28s : %10u\n", s, \
 662                          ar->debug.dfs_stats.p))
 663
 664 #define ATH10K_DFS_POOL_STAT(s, p) (\
 665         len += scnprintf(buf + len, size - len, "%-28s : %10u\n", s, \
 666                          ar->debug.dfs_pool_stats.p))
 667
 668 static ssize_t ath10k_read_dfs_stats(struct file *file, char __user *user_buf,
 669                                      size_t count, loff_t *ppos)
 670 {
 671         int retval = 0, len = 0;
 672         const int size = 8000;
 673         struct ath10k *ar = file->private_data;
 674         char *buf;
 675
 676         buf = kzalloc(size, GFP_KERNEL);
 677         if (buf == NULL)
 678                 return -ENOMEM;
 679
 680         if (!ar->dfs_detector) {
 681                 len += scnprintf(buf + len, size - len, "DFS not enabled\n");
 682                 goto exit;
 683         }
 684
 685         ar->debug.dfs_pool_stats =
 686                         ar->dfs_detector->get_stats(ar->dfs_detector);
 687
 688         len += scnprintf(buf + len, size - len, "Pulse detector statistics:\n");
 689
 690         ATH10K_DFS_STAT("reported phy errors", phy_errors);
 691         ATH10K_DFS_STAT("pulse events reported", pulses_total);
 692         ATH10K_DFS_STAT("DFS pulses detected", pulses_detected);
 693         ATH10K_DFS_STAT("DFS pulses discarded", pulses_discarded);
 694         ATH10K_DFS_STAT("Radars detected", radar_detected);
 695
 696         len += scnprintf(buf + len, size - len, "Global Pool statistics:\n");
 697         ATH10K_DFS_POOL_STAT("Pool references", pool_reference);
 698         ATH10K_DFS_POOL_STAT("Pulses allocated", pulse_allocated);
 699         ATH10K_DFS_POOL_STAT("Pulses alloc error", pulse_alloc_error);
 700         ATH10K_DFS_POOL_STAT("Pulses in use", pulse_used);
 701         ATH10K_DFS_POOL_STAT("Seqs. allocated", pseq_allocated);
 702         ATH10K_DFS_POOL_STAT("Seqs. alloc error", pseq_alloc_error);
 703         ATH10K_DFS_POOL_STAT("Seqs. in use", pseq_used);
 704
 705 exit:
 706         if (len > size)
 707                 len = size;
 708
 709         retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
 710         kfree(buf);
 711
 712         return retval;
 713 }
 714
 715 static const struct file_operations fops_dfs_stats = {
 716         .read = ath10k_read_dfs_stats,
 717         .open = simple_open,
 718         .owner = THIS_MODULE,
 719         .llseek = default_llseek,
 720 };
 721
 722 int ath10k_debug_create(struct ath10k *ar)
 723 {
 724         ar->debug.debugfs_phy = debugfs_create_dir("ath10k",
 725                                                    ar->hw->wiphy->debugfsdir);
 726
 727         if (!ar->debug.debugfs_phy)
 728                 return -ENOMEM;
 729
 730         INIT_DELAYED_WORK(&ar->debug.htt_stats_dwork,
 731                           ath10k_debug_htt_stats_dwork);
 732
 733         init_completion(&ar->debug.event_stats_compl);
 734
 735         debugfs_create_file("fw_stats", S_IRUSR, ar->debug.debugfs_phy, ar,
 736                             &fops_fw_stats);
 737
 738         debugfs_create_file("wmi_services", S_IRUSR, ar->debug.debugfs_phy, ar,
 739                             &fops_wmi_services);
 740
 741         debugfs_create_file("simulate_fw_crash", S_IRUSR, ar->debug.debugfs_phy,
 742                             ar, &fops_simulate_fw_crash);
 743
 744         debugfs_create_file("chip_id", S_IRUSR, ar->debug.debugfs_phy,
 745                             ar, &fops_chip_id);
 746
 747         debugfs_create_file("htt_stats_mask", S_IRUSR, ar->debug.debugfs_phy,
 748                             ar, &fops_htt_stats_mask);
 749
 750         if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED)) {
 751                 debugfs_create_file("dfs_simulate_radar", S_IWUSR,
 752                                     ar->debug.debugfs_phy, ar,
 753                                     &fops_simulate_radar);
 754
 755                 debugfs_create_bool("dfs_block_radar_events", S_IWUSR,
 756                                     ar->debug.debugfs_phy,
 757                                     &ar->dfs_block_radar_events);
 758
 759                 debugfs_create_file("dfs_stats", S_IRUSR,
 760                                     ar->debug.debugfs_phy, ar,
 761                                     &fops_dfs_stats);
 762         }
 763
 764         return 0;
 765 }
 766
 767 void ath10k_debug_destroy(struct ath10k *ar)
 768 {
 769         cancel_delayed_work_sync(&ar->debug.htt_stats_dwork);
 770 }
 771
 772 #endif /* CONFIG_ATH10K_DEBUGFS */
 773
 774 #ifdef CONFIG_ATH10K_DEBUG
 775 void ath10k_dbg(enum ath10k_debug_mask mask, const char *fmt, ...)
 776 {
 777         struct va_format vaf;
 778         va_list args;
 779
 780         va_start(args, fmt);
 781
 782         vaf.fmt = fmt;
 783         vaf.va = &args;
 784
 785         if (ath10k_debug_mask & mask)
 786                 ath10k_printk(KERN_DEBUG, "%pV", &vaf);
 787
 788         trace_ath10k_log_dbg(mask, &vaf);
 789
 790         va_end(args);
 791 }
 792 EXPORT_SYMBOL(ath10k_dbg);
 793
 794 void ath10k_dbg_dump(enum ath10k_debug_mask mask,
 795                      const char *msg, const char *prefix,
 796                      const void *buf, size_t len)
 797 {
 798         if (ath10k_debug_mask & mask) {
 799                 if (msg)
 800                         ath10k_dbg(mask, "%s\n", msg);
 801
 802                 print_hex_dump_bytes(prefix, DUMP_PREFIX_OFFSET, buf, len);
 803         }
 804
 805         /* tracing code doesn't like null strings :/ */
 806         trace_ath10k_log_dbg_dump(msg ? msg : "", prefix ? prefix : "",
 807                                   buf, len);
 808 }
 809 EXPORT_SYMBOL(ath10k_dbg_dump);
 810
 811 #endif /* CONFIG_ATH10K_DEBUG */