drivers/net/wireless/wl12xx/debugfs.c

   1 /*
   2  * This file is part of wl1271
   3  *
   4  * Copyright (C) 2009 Nokia Corporation
   5  *
   6  * Contact: Luciano Coelho <luciano.coelho@nokia.com>
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License
  10  * version 2 as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  20  * 02110-1301 USA
  21  *
  22  */
  23
  24 #include "debugfs.h"
  25
  26 #include <linux/skbuff.h>
  27 #include <linux/slab.h>
  28
  29 #include "wl12xx.h"
  30 #include "acx.h"
  31 #include "ps.h"
  32 #include "io.h"
  33
  34 /* ms */
  35 #define WL1271_DEBUGFS_STATS_LIFETIME 1000
  36
  37 /* debugfs macros idea from mac80211 */
  38 #define DEBUGFS_FORMAT_BUFFER_SIZE 100
  39 static int wl1271_format_buffer(char __user *userbuf, size_t count,
  40                                     loff_t *ppos, char *fmt, ...)
  41 {
  42         va_list args;
  43         char buf[DEBUGFS_FORMAT_BUFFER_SIZE];
  44         int res;
  45
  46         va_start(args, fmt);
  47         res = vscnprintf(buf, sizeof(buf), fmt, args);
  48         va_end(args);
  49
  50         return simple_read_from_buffer(userbuf, count, ppos, buf, res);
  51 }
  52
  53 #define DEBUGFS_READONLY_FILE(name, fmt, value...)                      \
  54 static ssize_t name## _read(struct file *file, char __user *userbuf,    \
  55                             size_t count, loff_t *ppos)                 \
  56 {                                                                       \
  57         struct wl1271 *wl = file->private_data;                         \
  58         return wl1271_format_buffer(userbuf, count, ppos,               \
  59                                     fmt "\n", ##value);                 \
  60 }                                                                       \
  61                                                                         \
  62 static const struct file_operations name## _ops = {                     \
  63         .read = name## _read,                                           \
  64         .open = wl1271_open_file_generic,                               \
  65         .llseek = generic_file_llseek,                                  \
  66 };
  67
  68 #define DEBUGFS_ADD(name, parent)                                       \
  69         entry = debugfs_create_file(#name, 0400, parent,                \
  70                                     wl, &name## _ops);                  \
  71         if (!entry || IS_ERR(entry))                                    \
  72                 goto err;                                               \
  73
  74 #define DEBUGFS_FWSTATS_FILE(sub, name, fmt)                            \
  75 static ssize_t sub## _ ##name## _read(struct file *file,                \
  76                                       char __user *userbuf,             \
  77                                       size_t count, loff_t *ppos)       \
  78 {                                                                       \
  79         struct wl1271 *wl = file->private_data;                         \
  80                                                                         \
  81         wl1271_debugfs_update_stats(wl);                                \
  82                                                                         \
  83         return wl1271_format_buffer(userbuf, count, ppos, fmt "\n",     \
  84                                     wl->stats.fw_stats->sub.name);      \
  85 }                                                                       \
  86                                                                         \
  87 static const struct file_operations sub## _ ##name## _ops = {           \
  88         .read = sub## _ ##name## _read,                                 \
  89         .open = wl1271_open_file_generic,                               \
  90         .llseek = generic_file_llseek,                                  \
  91 };
  92
  93 #define DEBUGFS_FWSTATS_ADD(sub, name)                          \
  94         DEBUGFS_ADD(sub## _ ##name, stats)
  95
  96 static void wl1271_debugfs_update_stats(struct wl1271 *wl)
  97 {
  98         int ret;
  99
 100         mutex_lock(&wl->mutex);
 101
 102         ret = wl1271_ps_elp_wakeup(wl);
 103         if (ret < 0)
 104                 goto out;
 105
 106         if (wl->state == WL1271_STATE_ON &&
 107             time_after(jiffies, wl->stats.fw_stats_update +
 108                        msecs_to_jiffies(WL1271_DEBUGFS_STATS_LIFETIME))) {
 109                 wl1271_acx_statistics(wl, wl->stats.fw_stats);
 110                 wl->stats.fw_stats_update = jiffies;
 111         }
 112
 113         wl1271_ps_elp_sleep(wl);
 114
 115 out:
 116         mutex_unlock(&wl->mutex);
 117 }
 118
 119 static int wl1271_open_file_generic(struct inode *inode, struct file *file)
 120 {
 121         file->private_data = inode->i_private;
 122         return 0;
 123 }
 124
 125 DEBUGFS_FWSTATS_FILE(tx, internal_desc_overflow, "%u");
 126
 127 DEBUGFS_FWSTATS_FILE(rx, out_of_mem, "%u");
 128 DEBUGFS_FWSTATS_FILE(rx, hdr_overflow, "%u");
 129 DEBUGFS_FWSTATS_FILE(rx, hw_stuck, "%u");
 130 DEBUGFS_FWSTATS_FILE(rx, dropped, "%u");
 131 DEBUGFS_FWSTATS_FILE(rx, fcs_err, "%u");
 132 DEBUGFS_FWSTATS_FILE(rx, xfr_hint_trig, "%u");
 133 DEBUGFS_FWSTATS_FILE(rx, path_reset, "%u");
 134 DEBUGFS_FWSTATS_FILE(rx, reset_counter, "%u");
 135
 136 DEBUGFS_FWSTATS_FILE(dma, rx_requested, "%u");
 137 DEBUGFS_FWSTATS_FILE(dma, rx_errors, "%u");
 138 DEBUGFS_FWSTATS_FILE(dma, tx_requested, "%u");
 139 DEBUGFS_FWSTATS_FILE(dma, tx_errors, "%u");
 140
 141 DEBUGFS_FWSTATS_FILE(isr, cmd_cmplt, "%u");
 142 DEBUGFS_FWSTATS_FILE(isr, fiqs, "%u");
 143 DEBUGFS_FWSTATS_FILE(isr, rx_headers, "%u");
 144 DEBUGFS_FWSTATS_FILE(isr, rx_mem_overflow, "%u");
 145 DEBUGFS_FWSTATS_FILE(isr, rx_rdys, "%u");
 146 DEBUGFS_FWSTATS_FILE(isr, irqs, "%u");
 147 DEBUGFS_FWSTATS_FILE(isr, tx_procs, "%u");
 148 DEBUGFS_FWSTATS_FILE(isr, decrypt_done, "%u");
 149 DEBUGFS_FWSTATS_FILE(isr, dma0_done, "%u");
 150 DEBUGFS_FWSTATS_FILE(isr, dma1_done, "%u");
 151 DEBUGFS_FWSTATS_FILE(isr, tx_exch_complete, "%u");
 152 DEBUGFS_FWSTATS_FILE(isr, commands, "%u");
 153 DEBUGFS_FWSTATS_FILE(isr, rx_procs, "%u");
 154 DEBUGFS_FWSTATS_FILE(isr, hw_pm_mode_changes, "%u");
 155 DEBUGFS_FWSTATS_FILE(isr, host_acknowledges, "%u");
 156 DEBUGFS_FWSTATS_FILE(isr, pci_pm, "%u");
 157 DEBUGFS_FWSTATS_FILE(isr, wakeups, "%u");
 158 DEBUGFS_FWSTATS_FILE(isr, low_rssi, "%u");
 159
 160 DEBUGFS_FWSTATS_FILE(wep, addr_key_count, "%u");
 161 DEBUGFS_FWSTATS_FILE(wep, default_key_count, "%u");
 162 /* skipping wep.reserved */
 163 DEBUGFS_FWSTATS_FILE(wep, key_not_found, "%u");
 164 DEBUGFS_FWSTATS_FILE(wep, decrypt_fail, "%u");
 165 DEBUGFS_FWSTATS_FILE(wep, packets, "%u");
 166 DEBUGFS_FWSTATS_FILE(wep, interrupt, "%u");
 167
 168 DEBUGFS_FWSTATS_FILE(pwr, ps_enter, "%u");
 169 DEBUGFS_FWSTATS_FILE(pwr, elp_enter, "%u");
 170 DEBUGFS_FWSTATS_FILE(pwr, missing_bcns, "%u");
 171 DEBUGFS_FWSTATS_FILE(pwr, wake_on_host, "%u");
 172 DEBUGFS_FWSTATS_FILE(pwr, wake_on_timer_exp, "%u");
 173 DEBUGFS_FWSTATS_FILE(pwr, tx_with_ps, "%u");
 174 DEBUGFS_FWSTATS_FILE(pwr, tx_without_ps, "%u");
 175 DEBUGFS_FWSTATS_FILE(pwr, rcvd_beacons, "%u");
 176 DEBUGFS_FWSTATS_FILE(pwr, power_save_off, "%u");
 177 DEBUGFS_FWSTATS_FILE(pwr, enable_ps, "%u");
 178 DEBUGFS_FWSTATS_FILE(pwr, disable_ps, "%u");
 179 DEBUGFS_FWSTATS_FILE(pwr, fix_tsf_ps, "%u");
 180 /* skipping cont_miss_bcns_spread for now */
 181 DEBUGFS_FWSTATS_FILE(pwr, rcvd_awake_beacons, "%u");
 182
 183 DEBUGFS_FWSTATS_FILE(mic, rx_pkts, "%u");
 184 DEBUGFS_FWSTATS_FILE(mic, calc_failure, "%u");
 185
 186 DEBUGFS_FWSTATS_FILE(aes, encrypt_fail, "%u");
 187 DEBUGFS_FWSTATS_FILE(aes, decrypt_fail, "%u");
 188 DEBUGFS_FWSTATS_FILE(aes, encrypt_packets, "%u");
 189 DEBUGFS_FWSTATS_FILE(aes, decrypt_packets, "%u");
 190 DEBUGFS_FWSTATS_FILE(aes, encrypt_interrupt, "%u");
 191 DEBUGFS_FWSTATS_FILE(aes, decrypt_interrupt, "%u");
 192
 193 DEBUGFS_FWSTATS_FILE(event, heart_beat, "%u");
 194 DEBUGFS_FWSTATS_FILE(event, calibration, "%u");
 195 DEBUGFS_FWSTATS_FILE(event, rx_mismatch, "%u");
 196 DEBUGFS_FWSTATS_FILE(event, rx_mem_empty, "%u");
 197 DEBUGFS_FWSTATS_FILE(event, rx_pool, "%u");
 198 DEBUGFS_FWSTATS_FILE(event, oom_late, "%u");
 199 DEBUGFS_FWSTATS_FILE(event, phy_transmit_error, "%u");
 200 DEBUGFS_FWSTATS_FILE(event, tx_stuck, "%u");
 201
 202 DEBUGFS_FWSTATS_FILE(ps, pspoll_timeouts, "%u");
 203 DEBUGFS_FWSTATS_FILE(ps, upsd_timeouts, "%u");
 204 DEBUGFS_FWSTATS_FILE(ps, upsd_max_sptime, "%u");
 205 DEBUGFS_FWSTATS_FILE(ps, upsd_max_apturn, "%u");
 206 DEBUGFS_FWSTATS_FILE(ps, pspoll_max_apturn, "%u");
 207 DEBUGFS_FWSTATS_FILE(ps, pspoll_utilization, "%u");
 208 DEBUGFS_FWSTATS_FILE(ps, upsd_utilization, "%u");
 209
 210 DEBUGFS_FWSTATS_FILE(rxpipe, rx_prep_beacon_drop, "%u");
 211 DEBUGFS_FWSTATS_FILE(rxpipe, descr_host_int_trig_rx_data, "%u");
 212 DEBUGFS_FWSTATS_FILE(rxpipe, beacon_buffer_thres_host_int_trig_rx_data, "%u");
 213 DEBUGFS_FWSTATS_FILE(rxpipe, missed_beacon_host_int_trig_rx_data, "%u");
 214 DEBUGFS_FWSTATS_FILE(rxpipe, tx_xfr_host_int_trig_rx_data, "%u");
 215
 216 DEBUGFS_READONLY_FILE(retry_count, "%u", wl->stats.retry_count);
 217 DEBUGFS_READONLY_FILE(excessive_retries, "%u",
 218                       wl->stats.excessive_retries);
 219
 220 static ssize_t tx_queue_len_read(struct file *file, char __user *userbuf,
 221                                  size_t count, loff_t *ppos)
 222 {
 223         struct wl1271 *wl = file->private_data;
 224         u32 queue_len;
 225         char buf[20];
 226         int res;
 227
 228         queue_len = wl->tx_queue_count;
 229
 230         res = scnprintf(buf, sizeof(buf), "%u\n", queue_len);
 231         return simple_read_from_buffer(userbuf, count, ppos, buf, res);
 232 }
 233
 234 static const struct file_operations tx_queue_len_ops = {
 235         .read = tx_queue_len_read,
 236         .open = wl1271_open_file_generic,
 237         .llseek = default_llseek,
 238 };
 239
 240 static ssize_t gpio_power_read(struct file *file, char __user *user_buf,
 241                           size_t count, loff_t *ppos)
 242 {
 243         struct wl1271 *wl = file->private_data;
 244         bool state = test_bit(WL1271_FLAG_GPIO_POWER, &wl->flags);
 245
 246         int res;
 247         char buf[10];
 248
 249         res = scnprintf(buf, sizeof(buf), "%d\n", state);
 250
 251         return simple_read_from_buffer(user_buf, count, ppos, buf, res);
 252 }
 253
 254 static ssize_t gpio_power_write(struct file *file,
 255                            const char __user *user_buf,
 256                            size_t count, loff_t *ppos)
 257 {
 258         struct wl1271 *wl = file->private_data;
 259         char buf[10];
 260         size_t len;
 261         unsigned long value;
 262         int ret;
 263
 264         len = min(count, sizeof(buf) - 1);
 265         if (copy_from_user(buf, user_buf, len)) {
 266                 return -EFAULT;
 267         }
 268         buf[len] = '\0';
 269
 270         ret = kstrtoul(buf, 0, &value);
 271         if (ret < 0) {
 272                 wl1271_warning("illegal value in gpio_power");
 273                 return -EINVAL;
 274         }
 275
 276         mutex_lock(&wl->mutex);
 277
 278         if (value)
 279                 wl1271_power_on(wl);
 280         else
 281                 wl1271_power_off(wl);
 282
 283         mutex_unlock(&wl->mutex);
 284         return count;
 285 }
 286
 287 static const struct file_operations gpio_power_ops = {
 288         .read = gpio_power_read,
 289         .write = gpio_power_write,
 290         .open = wl1271_open_file_generic,
 291         .llseek = default_llseek,
 292 };
 293
 294 static ssize_t dtim_interval_read(struct file *file, char __user *user_buf,
 295                                   size_t count, loff_t *ppos)
 296 {
 297         struct wl1271 *wl = file->private_data;
 298         u8 value;
 299
 300         if (wl->conf.conn.wake_up_event == CONF_WAKE_UP_EVENT_DTIM ||
 301             wl->conf.conn.wake_up_event == CONF_WAKE_UP_EVENT_N_DTIM)
 302                 value = wl->conf.conn.listen_interval;
 303         else
 304                 value = 0;
 305
 306         return wl1271_format_buffer(user_buf, count, ppos, "%d\n", value);
 307 }
 308
 309 static ssize_t dtim_interval_write(struct file *file,
 310                                    const char __user *user_buf,
 311                                    size_t count, loff_t *ppos)
 312 {
 313         struct wl1271 *wl = file->private_data;
 314         char buf[10];
 315         size_t len;
 316         unsigned long value;
 317         int ret;
 318
 319         len = min(count, sizeof(buf) - 1);
 320         if (copy_from_user(buf, user_buf, len))
 321                 return -EFAULT;
 322         buf[len] = '\0';
 323
 324         ret = strict_strtoul(buf, 0, &value);
 325         if (ret < 0) {
 326                 wl1271_warning("illegal value for dtim_interval");
 327                 return -EINVAL;
 328         }
 329
 330         if (value < 1 || value > 10) {
 331                 wl1271_warning("dtim value is not in valid range");
 332                 return -ERANGE;
 333         }
 334
 335         mutex_lock(&wl->mutex);
 336
 337         wl->conf.conn.listen_interval = value;
 338         /* for some reason there are different event types for 1 and >1 */
 339         if (value == 1)
 340                 wl->conf.conn.wake_up_event = CONF_WAKE_UP_EVENT_DTIM;
 341         else
 342                 wl->conf.conn.wake_up_event = CONF_WAKE_UP_EVENT_N_DTIM;
 343
 344         /*
 345          * we don't reconfigure ACX_WAKE_UP_CONDITIONS now, so it will only
 346          * take effect on the next time we enter psm.
 347          */
 348         mutex_unlock(&wl->mutex);
 349         return count;
 350 }
 351
 352 static const struct file_operations dtim_interval_ops = {
 353         .read = dtim_interval_read,
 354         .write = dtim_interval_write,
 355         .open = wl1271_open_file_generic,
 356         .llseek = default_llseek,
 357 };
 358
 359 static ssize_t beacon_interval_read(struct file *file, char __user *user_buf,
 360                                     size_t count, loff_t *ppos)
 361 {
 362         struct wl1271 *wl = file->private_data;
 363         u8 value;
 364
 365         if (wl->conf.conn.wake_up_event == CONF_WAKE_UP_EVENT_BEACON ||
 366             wl->conf.conn.wake_up_event == CONF_WAKE_UP_EVENT_N_BEACONS)
 367                 value = wl->conf.conn.listen_interval;
 368         else
 369                 value = 0;
 370
 371         return wl1271_format_buffer(user_buf, count, ppos, "%d\n", value);
 372 }
 373
 374 static ssize_t beacon_interval_write(struct file *file,
 375                                      const char __user *user_buf,
 376                                      size_t count, loff_t *ppos)
 377 {
 378         struct wl1271 *wl = file->private_data;
 379         char buf[10];
 380         size_t len;
 381         unsigned long value;
 382         int ret;
 383
 384         len = min(count, sizeof(buf) - 1);
 385         if (copy_from_user(buf, user_buf, len))
 386                 return -EFAULT;
 387         buf[len] = '\0';
 388
 389         ret = strict_strtoul(buf, 0, &value);
 390         if (ret < 0) {
 391                 wl1271_warning("illegal value for beacon_interval");
 392                 return -EINVAL;
 393         }
 394
 395         if (value < 1 || value > 255) {
 396                 wl1271_warning("beacon interval value is not in valid range");
 397                 return -ERANGE;
 398         }
 399
 400         mutex_lock(&wl->mutex);
 401
 402         wl->conf.conn.listen_interval = value;
 403         /* for some reason there are different event types for 1 and >1 */
 404         if (value == 1)
 405                 wl->conf.conn.wake_up_event = CONF_WAKE_UP_EVENT_BEACON;
 406         else
 407                 wl->conf.conn.wake_up_event = CONF_WAKE_UP_EVENT_N_BEACONS;
 408
 409         /*
 410          * we don't reconfigure ACX_WAKE_UP_CONDITIONS now, so it will only
 411          * take effect on the next time we enter psm.
 412          */
 413         mutex_unlock(&wl->mutex);
 414         return count;
 415 }
 416
 417 static const struct file_operations beacon_interval_ops = {
 418         .read = beacon_interval_read,
 419         .write = beacon_interval_write,
 420         .open = wl1271_open_file_generic,
 421         .llseek = default_llseek,
 422 };
 423
 424 static int wl1271_debugfs_add_files(struct wl1271 *wl,
 425                                      struct dentry *rootdir)
 426 {
 427         int ret = 0;
 428         struct dentry *entry, *stats;
 429
 430         stats = debugfs_create_dir("fw-statistics", rootdir);
 431         if (!stats || IS_ERR(stats)) {
 432                 entry = stats;
 433                 goto err;
 434         }
 435
 436         DEBUGFS_FWSTATS_ADD(tx, internal_desc_overflow);
 437
 438         DEBUGFS_FWSTATS_ADD(rx, out_of_mem);
 439         DEBUGFS_FWSTATS_ADD(rx, hdr_overflow);
 440         DEBUGFS_FWSTATS_ADD(rx, hw_stuck);
 441         DEBUGFS_FWSTATS_ADD(rx, dropped);
 442         DEBUGFS_FWSTATS_ADD(rx, fcs_err);
 443         DEBUGFS_FWSTATS_ADD(rx, xfr_hint_trig);
 444         DEBUGFS_FWSTATS_ADD(rx, path_reset);
 445         DEBUGFS_FWSTATS_ADD(rx, reset_counter);
 446
 447         DEBUGFS_FWSTATS_ADD(dma, rx_requested);
 448         DEBUGFS_FWSTATS_ADD(dma, rx_errors);
 449         DEBUGFS_FWSTATS_ADD(dma, tx_requested);
 450         DEBUGFS_FWSTATS_ADD(dma, tx_errors);
 451
 452         DEBUGFS_FWSTATS_ADD(isr, cmd_cmplt);
 453         DEBUGFS_FWSTATS_ADD(isr, fiqs);
 454         DEBUGFS_FWSTATS_ADD(isr, rx_headers);
 455         DEBUGFS_FWSTATS_ADD(isr, rx_mem_overflow);
 456         DEBUGFS_FWSTATS_ADD(isr, rx_rdys);
 457         DEBUGFS_FWSTATS_ADD(isr, irqs);
 458         DEBUGFS_FWSTATS_ADD(isr, tx_procs);
 459         DEBUGFS_FWSTATS_ADD(isr, decrypt_done);
 460         DEBUGFS_FWSTATS_ADD(isr, dma0_done);
 461         DEBUGFS_FWSTATS_ADD(isr, dma1_done);
 462         DEBUGFS_FWSTATS_ADD(isr, tx_exch_complete);
 463         DEBUGFS_FWSTATS_ADD(isr, commands);
 464         DEBUGFS_FWSTATS_ADD(isr, rx_procs);
 465         DEBUGFS_FWSTATS_ADD(isr, hw_pm_mode_changes);
 466         DEBUGFS_FWSTATS_ADD(isr, host_acknowledges);
 467         DEBUGFS_FWSTATS_ADD(isr, pci_pm);
 468         DEBUGFS_FWSTATS_ADD(isr, wakeups);
 469         DEBUGFS_FWSTATS_ADD(isr, low_rssi);
 470
 471         DEBUGFS_FWSTATS_ADD(wep, addr_key_count);
 472         DEBUGFS_FWSTATS_ADD(wep, default_key_count);
 473         /* skipping wep.reserved */
 474         DEBUGFS_FWSTATS_ADD(wep, key_not_found);
 475         DEBUGFS_FWSTATS_ADD(wep, decrypt_fail);
 476         DEBUGFS_FWSTATS_ADD(wep, packets);
 477         DEBUGFS_FWSTATS_ADD(wep, interrupt);
 478
 479         DEBUGFS_FWSTATS_ADD(pwr, ps_enter);
 480         DEBUGFS_FWSTATS_ADD(pwr, elp_enter);
 481         DEBUGFS_FWSTATS_ADD(pwr, missing_bcns);
 482         DEBUGFS_FWSTATS_ADD(pwr, wake_on_host);
 483         DEBUGFS_FWSTATS_ADD(pwr, wake_on_timer_exp);
 484         DEBUGFS_FWSTATS_ADD(pwr, tx_with_ps);
 485         DEBUGFS_FWSTATS_ADD(pwr, tx_without_ps);
 486         DEBUGFS_FWSTATS_ADD(pwr, rcvd_beacons);
 487         DEBUGFS_FWSTATS_ADD(pwr, power_save_off);
 488         DEBUGFS_FWSTATS_ADD(pwr, enable_ps);
 489         DEBUGFS_FWSTATS_ADD(pwr, disable_ps);
 490         DEBUGFS_FWSTATS_ADD(pwr, fix_tsf_ps);
 491         /* skipping cont_miss_bcns_spread for now */
 492         DEBUGFS_FWSTATS_ADD(pwr, rcvd_awake_beacons);
 493
 494         DEBUGFS_FWSTATS_ADD(mic, rx_pkts);
 495         DEBUGFS_FWSTATS_ADD(mic, calc_failure);
 496
 497         DEBUGFS_FWSTATS_ADD(aes, encrypt_fail);
 498         DEBUGFS_FWSTATS_ADD(aes, decrypt_fail);
 499         DEBUGFS_FWSTATS_ADD(aes, encrypt_packets);
 500         DEBUGFS_FWSTATS_ADD(aes, decrypt_packets);
 501         DEBUGFS_FWSTATS_ADD(aes, encrypt_interrupt);
 502         DEBUGFS_FWSTATS_ADD(aes, decrypt_interrupt);
 503
 504         DEBUGFS_FWSTATS_ADD(event, heart_beat);
 505         DEBUGFS_FWSTATS_ADD(event, calibration);
 506         DEBUGFS_FWSTATS_ADD(event, rx_mismatch);
 507         DEBUGFS_FWSTATS_ADD(event, rx_mem_empty);
 508         DEBUGFS_FWSTATS_ADD(event, rx_pool);
 509         DEBUGFS_FWSTATS_ADD(event, oom_late);
 510         DEBUGFS_FWSTATS_ADD(event, phy_transmit_error);
 511         DEBUGFS_FWSTATS_ADD(event, tx_stuck);
 512
 513         DEBUGFS_FWSTATS_ADD(ps, pspoll_timeouts);
 514         DEBUGFS_FWSTATS_ADD(ps, upsd_timeouts);
 515         DEBUGFS_FWSTATS_ADD(ps, upsd_max_sptime);
 516         DEBUGFS_FWSTATS_ADD(ps, upsd_max_apturn);
 517         DEBUGFS_FWSTATS_ADD(ps, pspoll_max_apturn);
 518         DEBUGFS_FWSTATS_ADD(ps, pspoll_utilization);
 519         DEBUGFS_FWSTATS_ADD(ps, upsd_utilization);
 520
 521         DEBUGFS_FWSTATS_ADD(rxpipe, rx_prep_beacon_drop);
 522         DEBUGFS_FWSTATS_ADD(rxpipe, descr_host_int_trig_rx_data);
 523         DEBUGFS_FWSTATS_ADD(rxpipe, beacon_buffer_thres_host_int_trig_rx_data);
 524         DEBUGFS_FWSTATS_ADD(rxpipe, missed_beacon_host_int_trig_rx_data);
 525         DEBUGFS_FWSTATS_ADD(rxpipe, tx_xfr_host_int_trig_rx_data);
 526
 527         DEBUGFS_ADD(tx_queue_len, rootdir);
 528         DEBUGFS_ADD(retry_count, rootdir);
 529         DEBUGFS_ADD(excessive_retries, rootdir);
 530
 531         DEBUGFS_ADD(gpio_power, rootdir);
 532         DEBUGFS_ADD(dtim_interval, rootdir);
 533         DEBUGFS_ADD(beacon_interval, rootdir);
 534
 535         return 0;
 536
 537 err:
 538         if (IS_ERR(entry))
 539                 ret = PTR_ERR(entry);
 540         else
 541                 ret = -ENOMEM;
 542
 543         return ret;
 544 }
 545
 546 void wl1271_debugfs_reset(struct wl1271 *wl)
 547 {
 548         if (!wl->stats.fw_stats)
 549                 return;
 550
 551         memset(wl->stats.fw_stats, 0, sizeof(*wl->stats.fw_stats));
 552         wl->stats.retry_count = 0;
 553         wl->stats.excessive_retries = 0;
 554 }
 555
 556 int wl1271_debugfs_init(struct wl1271 *wl)
 557 {
 558         int ret;
 559         struct dentry *rootdir;
 560
 561         rootdir = debugfs_create_dir(KBUILD_MODNAME,
 562                                      wl->hw->wiphy->debugfsdir);
 563
 564         if (IS_ERR(rootdir)) {
 565                 ret = PTR_ERR(rootdir);
 566                 goto err;
 567         }
 568
 569         wl->stats.fw_stats = kzalloc(sizeof(*wl->stats.fw_stats),
 570                                       GFP_KERNEL);
 571
 572         if (!wl->stats.fw_stats) {
 573                 ret = -ENOMEM;
 574                 goto err_fw;
 575         }
 576
 577         wl->stats.fw_stats_update = jiffies;
 578
 579         ret = wl1271_debugfs_add_files(wl, rootdir);
 580
 581         if (ret < 0)
 582                 goto err_file;
 583
 584         return 0;
 585
 586 err_file:
 587         kfree(wl->stats.fw_stats);
 588         wl->stats.fw_stats = NULL;
 589
 590 err_fw:
 591         debugfs_remove_recursive(rootdir);
 592
 593 err:
 594         return ret;
 595 }
 596
 597 void wl1271_debugfs_exit(struct wl1271 *wl)
 598 {
 599         kfree(wl->stats.fw_stats);
 600         wl->stats.fw_stats = NULL;
 601 }