drivers/net/wireless/ti/wlcore/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 #include <linux/module.h>
  29
  30 #include "wlcore.h"
  31 #include "debug.h"
  32 #include "acx.h"
  33 #include "ps.h"
  34 #include "io.h"
  35 #include "tx.h"
  36 #include "hw_ops.h"
  37
  38 /* ms */
  39 #define WL1271_DEBUGFS_STATS_LIFETIME 1000
  40
  41 #define WLCORE_MAX_BLOCK_SIZE ((size_t)(4*PAGE_SIZE))
  42
  43 /* debugfs macros idea from mac80211 */
  44 int wl1271_format_buffer(char __user *userbuf, size_t count,
  45                          loff_t *ppos, char *fmt, ...)
  46 {
  47         va_list args;
  48         char buf[DEBUGFS_FORMAT_BUFFER_SIZE];
  49         int res;
  50
  51         va_start(args, fmt);
  52         res = vscnprintf(buf, sizeof(buf), fmt, args);
  53         va_end(args);
  54
  55         return simple_read_from_buffer(userbuf, count, ppos, buf, res);
  56 }
  57 EXPORT_SYMBOL_GPL(wl1271_format_buffer);
  58
  59 void wl1271_debugfs_update_stats(struct wl1271 *wl)
  60 {
  61         int ret;
  62
  63         mutex_lock(&wl->mutex);
  64
  65         if (unlikely(wl->state != WLCORE_STATE_ON))
  66                 goto out;
  67
  68         ret = wl1271_ps_elp_wakeup(wl);
  69         if (ret < 0)
  70                 goto out;
  71
  72         if (!wl->plt &&
  73             time_after(jiffies, wl->stats.fw_stats_update +
  74                        msecs_to_jiffies(WL1271_DEBUGFS_STATS_LIFETIME))) {
  75                 wl1271_acx_statistics(wl, wl->stats.fw_stats);
  76                 wl->stats.fw_stats_update = jiffies;
  77         }
  78
  79         wl1271_ps_elp_sleep(wl);
  80
  81 out:
  82         mutex_unlock(&wl->mutex);
  83 }
  84 EXPORT_SYMBOL_GPL(wl1271_debugfs_update_stats);
  85
  86 DEBUGFS_READONLY_FILE(retry_count, "%u", wl->stats.retry_count);
  87 DEBUGFS_READONLY_FILE(excessive_retries, "%u",
  88                       wl->stats.excessive_retries);
  89
  90 static ssize_t tx_queue_len_read(struct file *file, char __user *userbuf,
  91                                  size_t count, loff_t *ppos)
  92 {
  93         struct wl1271 *wl = file->private_data;
  94         u32 queue_len;
  95         char buf[20];
  96         int res;
  97
  98         queue_len = wl1271_tx_total_queue_count(wl);
  99
 100         res = scnprintf(buf, sizeof(buf), "%u\n", queue_len);
 101         return simple_read_from_buffer(userbuf, count, ppos, buf, res);
 102 }
 103
 104 static const struct file_operations tx_queue_len_ops = {
 105         .read = tx_queue_len_read,
 106         .open = simple_open,
 107         .llseek = default_llseek,
 108 };
 109
 110 static void chip_op_handler(struct wl1271 *wl, unsigned long value,
 111                             void *arg)
 112 {
 113         int ret;
 114         int (*chip_op) (struct wl1271 *wl);
 115
 116         if (!arg) {
 117                 wl1271_warning("debugfs chip_op_handler with no callback");
 118                 return;
 119         }
 120
 121         ret = wl1271_ps_elp_wakeup(wl);
 122         if (ret < 0)
 123                 return;
 124
 125         chip_op = arg;
 126         chip_op(wl);
 127
 128         wl1271_ps_elp_sleep(wl);
 129 }
 130
 131
 132 static inline void no_write_handler(struct wl1271 *wl,
 133                                     unsigned long value,
 134                                     unsigned long param)
 135 {
 136 }
 137
 138 #define WL12XX_CONF_DEBUGFS(param, conf_sub_struct,                     \
 139                             min_val, max_val, write_handler_locked,     \
 140                             write_handler_arg)                          \
 141         static ssize_t param##_read(struct file *file,                  \
 142                                       char __user *user_buf,            \
 143                                       size_t count, loff_t *ppos)       \
 144         {                                                               \
 145         struct wl1271 *wl = file->private_data;                         \
 146         return wl1271_format_buffer(user_buf, count,                    \
 147                                     ppos, "%d\n",                       \
 148                                     wl->conf.conf_sub_struct.param);    \
 149         }                                                               \
 150                                                                         \
 151         static ssize_t param##_write(struct file *file,                 \
 152                                      const char __user *user_buf,       \
 153                                      size_t count, loff_t *ppos)        \
 154         {                                                               \
 155         struct wl1271 *wl = file->private_data;                         \
 156         unsigned long value;                                            \
 157         int ret;                                                        \
 158                                                                         \
 159         ret = kstrtoul_from_user(user_buf, count, 10, &value);          \
 160         if (ret < 0) {                                                  \
 161                 wl1271_warning("illegal value for " #param);            \
 162                 return -EINVAL;                                         \
 163         }                                                               \
 164                                                                         \
 165         if (value < min_val || value > max_val) {                       \
 166                 wl1271_warning(#param " is not in valid range");        \
 167                 return -ERANGE;                                         \
 168         }                                                               \
 169                                                                         \
 170         mutex_lock(&wl->mutex);                                         \
 171         wl->conf.conf_sub_struct.param = value;                         \
 172                                                                         \
 173         write_handler_locked(wl, value, write_handler_arg);             \
 174                                                                         \
 175         mutex_unlock(&wl->mutex);                                       \
 176         return count;                                                   \
 177         }                                                               \
 178                                                                         \
 179         static const struct file_operations param##_ops = {             \
 180                 .read = param##_read,                                   \
 181                 .write = param##_write,                                 \
 182                 .open = simple_open,                                    \
 183                 .llseek = default_llseek,                               \
 184         };
 185
 186 WL12XX_CONF_DEBUGFS(irq_pkt_threshold, rx, 0, 65535,
 187                     chip_op_handler, wl1271_acx_init_rx_interrupt)
 188 WL12XX_CONF_DEBUGFS(irq_blk_threshold, rx, 0, 65535,
 189                     chip_op_handler, wl1271_acx_init_rx_interrupt)
 190 WL12XX_CONF_DEBUGFS(irq_timeout, rx, 0, 100,
 191                     chip_op_handler, wl1271_acx_init_rx_interrupt)
 192
 193 static ssize_t gpio_power_read(struct file *file, char __user *user_buf,
 194                           size_t count, loff_t *ppos)
 195 {
 196         struct wl1271 *wl = file->private_data;
 197         bool state = test_bit(WL1271_FLAG_GPIO_POWER, &wl->flags);
 198
 199         int res;
 200         char buf[10];
 201
 202         res = scnprintf(buf, sizeof(buf), "%d\n", state);
 203
 204         return simple_read_from_buffer(user_buf, count, ppos, buf, res);
 205 }
 206
 207 static ssize_t gpio_power_write(struct file *file,
 208                            const char __user *user_buf,
 209                            size_t count, loff_t *ppos)
 210 {
 211         struct wl1271 *wl = file->private_data;
 212         unsigned long value;
 213         int ret;
 214
 215         ret = kstrtoul_from_user(user_buf, count, 10, &value);
 216         if (ret < 0) {
 217                 wl1271_warning("illegal value in gpio_power");
 218                 return -EINVAL;
 219         }
 220
 221         mutex_lock(&wl->mutex);
 222
 223         if (value)
 224                 wl1271_power_on(wl);
 225         else
 226                 wl1271_power_off(wl);
 227
 228         mutex_unlock(&wl->mutex);
 229         return count;
 230 }
 231
 232 static const struct file_operations gpio_power_ops = {
 233         .read = gpio_power_read,
 234         .write = gpio_power_write,
 235         .open = simple_open,
 236         .llseek = default_llseek,
 237 };
 238
 239 static ssize_t start_recovery_write(struct file *file,
 240                                     const char __user *user_buf,
 241                                     size_t count, loff_t *ppos)
 242 {
 243         struct wl1271 *wl = file->private_data;
 244
 245         mutex_lock(&wl->mutex);
 246         wl12xx_queue_recovery_work(wl);
 247         mutex_unlock(&wl->mutex);
 248
 249         return count;
 250 }
 251
 252 static const struct file_operations start_recovery_ops = {
 253         .write = start_recovery_write,
 254         .open = simple_open,
 255         .llseek = default_llseek,
 256 };
 257
 258 static ssize_t dynamic_ps_timeout_read(struct file *file, char __user *user_buf,
 259                           size_t count, loff_t *ppos)
 260 {
 261         struct wl1271 *wl = file->private_data;
 262
 263         return wl1271_format_buffer(user_buf, count,
 264                                     ppos, "%d\n",
 265                                     wl->conf.conn.dynamic_ps_timeout);
 266 }
 267
 268 static ssize_t dynamic_ps_timeout_write(struct file *file,
 269                                     const char __user *user_buf,
 270                                     size_t count, loff_t *ppos)
 271 {
 272         struct wl1271 *wl = file->private_data;
 273         struct wl12xx_vif *wlvif;
 274         unsigned long value;
 275         int ret;
 276
 277         ret = kstrtoul_from_user(user_buf, count, 10, &value);
 278         if (ret < 0) {
 279                 wl1271_warning("illegal value in dynamic_ps");
 280                 return -EINVAL;
 281         }
 282
 283         if (value < 1 || value > 65535) {
 284                 wl1271_warning("dyanmic_ps_timeout is not in valid range");
 285                 return -ERANGE;
 286         }
 287
 288         mutex_lock(&wl->mutex);
 289
 290         wl->conf.conn.dynamic_ps_timeout = value;
 291
 292         if (unlikely(wl->state != WLCORE_STATE_ON))
 293                 goto out;
 294
 295         ret = wl1271_ps_elp_wakeup(wl);
 296         if (ret < 0)
 297                 goto out;
 298
 299         /* In case we're already in PSM, trigger it again to set new timeout
 300          * immediately without waiting for re-association
 301          */
 302
 303         wl12xx_for_each_wlvif_sta(wl, wlvif) {
 304                 if (test_bit(WLVIF_FLAG_IN_PS, &wlvif->flags))
 305                         wl1271_ps_set_mode(wl, wlvif, STATION_AUTO_PS_MODE);
 306         }
 307
 308         wl1271_ps_elp_sleep(wl);
 309
 310 out:
 311         mutex_unlock(&wl->mutex);
 312         return count;
 313 }
 314
 315 static const struct file_operations dynamic_ps_timeout_ops = {
 316         .read = dynamic_ps_timeout_read,
 317         .write = dynamic_ps_timeout_write,
 318         .open = simple_open,
 319         .llseek = default_llseek,
 320 };
 321
 322 static ssize_t forced_ps_read(struct file *file, char __user *user_buf,
 323                           size_t count, loff_t *ppos)
 324 {
 325         struct wl1271 *wl = file->private_data;
 326
 327         return wl1271_format_buffer(user_buf, count,
 328                                     ppos, "%d\n",
 329                                     wl->conf.conn.forced_ps);
 330 }
 331
 332 static ssize_t forced_ps_write(struct file *file,
 333                                     const char __user *user_buf,
 334                                     size_t count, loff_t *ppos)
 335 {
 336         struct wl1271 *wl = file->private_data;
 337         struct wl12xx_vif *wlvif;
 338         unsigned long value;
 339         int ret, ps_mode;
 340
 341         ret = kstrtoul_from_user(user_buf, count, 10, &value);
 342         if (ret < 0) {
 343                 wl1271_warning("illegal value in forced_ps");
 344                 return -EINVAL;
 345         }
 346
 347         if (value != 1 && value != 0) {
 348                 wl1271_warning("forced_ps should be either 0 or 1");
 349                 return -ERANGE;
 350         }
 351
 352         mutex_lock(&wl->mutex);
 353
 354         if (wl->conf.conn.forced_ps == value)
 355                 goto out;
 356
 357         wl->conf.conn.forced_ps = value;
 358
 359         if (unlikely(wl->state != WLCORE_STATE_ON))
 360                 goto out;
 361
 362         ret = wl1271_ps_elp_wakeup(wl);
 363         if (ret < 0)
 364                 goto out;
 365
 366         /* In case we're already in PSM, trigger it again to switch mode
 367          * immediately without waiting for re-association
 368          */
 369
 370         ps_mode = value ? STATION_POWER_SAVE_MODE : STATION_AUTO_PS_MODE;
 371
 372         wl12xx_for_each_wlvif_sta(wl, wlvif) {
 373                 if (test_bit(WLVIF_FLAG_IN_PS, &wlvif->flags))
 374                         wl1271_ps_set_mode(wl, wlvif, ps_mode);
 375         }
 376
 377         wl1271_ps_elp_sleep(wl);
 378
 379 out:
 380         mutex_unlock(&wl->mutex);
 381         return count;
 382 }
 383
 384 static const struct file_operations forced_ps_ops = {
 385         .read = forced_ps_read,
 386         .write = forced_ps_write,
 387         .open = simple_open,
 388         .llseek = default_llseek,
 389 };
 390
 391 static ssize_t split_scan_timeout_read(struct file *file, char __user *user_buf,
 392                           size_t count, loff_t *ppos)
 393 {
 394         struct wl1271 *wl = file->private_data;
 395
 396         return wl1271_format_buffer(user_buf, count,
 397                                     ppos, "%d\n",
 398                                     wl->conf.scan.split_scan_timeout / 1000);
 399 }
 400
 401 static ssize_t split_scan_timeout_write(struct file *file,
 402                                     const char __user *user_buf,
 403                                     size_t count, loff_t *ppos)
 404 {
 405         struct wl1271 *wl = file->private_data;
 406         unsigned long value;
 407         int ret;
 408
 409         ret = kstrtoul_from_user(user_buf, count, 10, &value);
 410         if (ret < 0) {
 411                 wl1271_warning("illegal value in split_scan_timeout");
 412                 return -EINVAL;
 413         }
 414
 415         if (value == 0)
 416                 wl1271_info("split scan will be disabled");
 417
 418         mutex_lock(&wl->mutex);
 419
 420         wl->conf.scan.split_scan_timeout = value * 1000;
 421
 422         mutex_unlock(&wl->mutex);
 423         return count;
 424 }
 425
 426 static const struct file_operations split_scan_timeout_ops = {
 427         .read = split_scan_timeout_read,
 428         .write = split_scan_timeout_write,
 429         .open = simple_open,
 430         .llseek = default_llseek,
 431 };
 432
 433 static ssize_t driver_state_read(struct file *file, char __user *user_buf,
 434                                  size_t count, loff_t *ppos)
 435 {
 436         struct wl1271 *wl = file->private_data;
 437         int res = 0;
 438         ssize_t ret;
 439         char *buf;
 440
 441 #define DRIVER_STATE_BUF_LEN 1024
 442
 443         buf = kmalloc(DRIVER_STATE_BUF_LEN, GFP_KERNEL);
 444         if (!buf)
 445                 return -ENOMEM;
 446
 447         mutex_lock(&wl->mutex);
 448
 449 #define DRIVER_STATE_PRINT(x, fmt)   \
 450         (res += scnprintf(buf + res, DRIVER_STATE_BUF_LEN - res,\
 451                           #x " = " fmt "\n", wl->x))
 452
 453 #define DRIVER_STATE_PRINT_LONG(x) DRIVER_STATE_PRINT(x, "%ld")
 454 #define DRIVER_STATE_PRINT_INT(x)  DRIVER_STATE_PRINT(x, "%d")
 455 #define DRIVER_STATE_PRINT_STR(x)  DRIVER_STATE_PRINT(x, "%s")
 456 #define DRIVER_STATE_PRINT_LHEX(x) DRIVER_STATE_PRINT(x, "0x%lx")
 457 #define DRIVER_STATE_PRINT_HEX(x)  DRIVER_STATE_PRINT(x, "0x%x")
 458
 459         DRIVER_STATE_PRINT_INT(tx_blocks_available);
 460         DRIVER_STATE_PRINT_INT(tx_allocated_blocks);
 461         DRIVER_STATE_PRINT_INT(tx_allocated_pkts[0]);
 462         DRIVER_STATE_PRINT_INT(tx_allocated_pkts[1]);
 463         DRIVER_STATE_PRINT_INT(tx_allocated_pkts[2]);
 464         DRIVER_STATE_PRINT_INT(tx_allocated_pkts[3]);
 465         DRIVER_STATE_PRINT_INT(tx_frames_cnt);
 466         DRIVER_STATE_PRINT_LHEX(tx_frames_map[0]);
 467         DRIVER_STATE_PRINT_INT(tx_queue_count[0]);
 468         DRIVER_STATE_PRINT_INT(tx_queue_count[1]);
 469         DRIVER_STATE_PRINT_INT(tx_queue_count[2]);
 470         DRIVER_STATE_PRINT_INT(tx_queue_count[3]);
 471         DRIVER_STATE_PRINT_INT(tx_packets_count);
 472         DRIVER_STATE_PRINT_INT(tx_results_count);
 473         DRIVER_STATE_PRINT_LHEX(flags);
 474         DRIVER_STATE_PRINT_INT(tx_blocks_freed);
 475         DRIVER_STATE_PRINT_INT(rx_counter);
 476         DRIVER_STATE_PRINT_INT(state);
 477         DRIVER_STATE_PRINT_INT(channel);
 478         DRIVER_STATE_PRINT_INT(band);
 479         DRIVER_STATE_PRINT_INT(power_level);
 480         DRIVER_STATE_PRINT_INT(sg_enabled);
 481         DRIVER_STATE_PRINT_INT(enable_11a);
 482         DRIVER_STATE_PRINT_INT(noise);
 483         DRIVER_STATE_PRINT_HEX(ap_fw_ps_map);
 484         DRIVER_STATE_PRINT_LHEX(ap_ps_map);
 485         DRIVER_STATE_PRINT_HEX(quirks);
 486         DRIVER_STATE_PRINT_HEX(irq);
 487         /* TODO: ref_clock and tcxo_clock were moved to wl12xx priv */
 488         DRIVER_STATE_PRINT_HEX(hw_pg_ver);
 489         DRIVER_STATE_PRINT_HEX(platform_quirks);
 490         DRIVER_STATE_PRINT_HEX(chip.id);
 491         DRIVER_STATE_PRINT_STR(chip.fw_ver_str);
 492         DRIVER_STATE_PRINT_STR(chip.phy_fw_ver_str);
 493         DRIVER_STATE_PRINT_INT(recovery_count);
 494
 495 #undef DRIVER_STATE_PRINT_INT
 496 #undef DRIVER_STATE_PRINT_LONG
 497 #undef DRIVER_STATE_PRINT_HEX
 498 #undef DRIVER_STATE_PRINT_LHEX
 499 #undef DRIVER_STATE_PRINT_STR
 500 #undef DRIVER_STATE_PRINT
 501 #undef DRIVER_STATE_BUF_LEN
 502
 503         mutex_unlock(&wl->mutex);
 504
 505         ret = simple_read_from_buffer(user_buf, count, ppos, buf, res);
 506         kfree(buf);
 507         return ret;
 508 }
 509
 510 static const struct file_operations driver_state_ops = {
 511         .read = driver_state_read,
 512         .open = simple_open,
 513         .llseek = default_llseek,
 514 };
 515
 516 static ssize_t vifs_state_read(struct file *file, char __user *user_buf,
 517                                  size_t count, loff_t *ppos)
 518 {
 519         struct wl1271 *wl = file->private_data;
 520         struct wl12xx_vif *wlvif;
 521         int ret, res = 0;
 522         const int buf_size = 4096;
 523         char *buf;
 524         char tmp_buf[64];
 525
 526         buf = kzalloc(buf_size, GFP_KERNEL);
 527         if (!buf)
 528                 return -ENOMEM;
 529
 530         mutex_lock(&wl->mutex);
 531
 532 #define VIF_STATE_PRINT(x, fmt)                         \
 533         (res += scnprintf(buf + res, buf_size - res,    \
 534                           #x " = " fmt "\n", wlvif->x))
 535
 536 #define VIF_STATE_PRINT_LONG(x)  VIF_STATE_PRINT(x, "%ld")
 537 #define VIF_STATE_PRINT_INT(x)   VIF_STATE_PRINT(x, "%d")
 538 #define VIF_STATE_PRINT_STR(x)   VIF_STATE_PRINT(x, "%s")
 539 #define VIF_STATE_PRINT_LHEX(x)  VIF_STATE_PRINT(x, "0x%lx")
 540 #define VIF_STATE_PRINT_LLHEX(x) VIF_STATE_PRINT(x, "0x%llx")
 541 #define VIF_STATE_PRINT_HEX(x)   VIF_STATE_PRINT(x, "0x%x")
 542
 543 #define VIF_STATE_PRINT_NSTR(x, len)                            \
 544         do {                                                    \
 545                 memset(tmp_buf, 0, sizeof(tmp_buf));            \
 546                 memcpy(tmp_buf, wlvif->x,                       \
 547                        min_t(u8, len, sizeof(tmp_buf) - 1));    \
 548                 res += scnprintf(buf + res, buf_size - res,     \
 549                                  #x " = %s\n", tmp_buf);        \
 550         } while (0)
 551
 552         wl12xx_for_each_wlvif(wl, wlvif) {
 553                 VIF_STATE_PRINT_INT(role_id);
 554                 VIF_STATE_PRINT_INT(bss_type);
 555                 VIF_STATE_PRINT_LHEX(flags);
 556                 VIF_STATE_PRINT_INT(p2p);
 557                 VIF_STATE_PRINT_INT(dev_role_id);
 558                 VIF_STATE_PRINT_INT(dev_hlid);
 559
 560                 if (wlvif->bss_type == BSS_TYPE_STA_BSS ||
 561                     wlvif->bss_type == BSS_TYPE_IBSS) {
 562                         VIF_STATE_PRINT_INT(sta.hlid);
 563                         VIF_STATE_PRINT_INT(sta.ba_rx_bitmap);
 564                         VIF_STATE_PRINT_INT(sta.basic_rate_idx);
 565                         VIF_STATE_PRINT_INT(sta.ap_rate_idx);
 566                         VIF_STATE_PRINT_INT(sta.p2p_rate_idx);
 567                         VIF_STATE_PRINT_INT(sta.qos);
 568                 } else {
 569                         VIF_STATE_PRINT_INT(ap.global_hlid);
 570                         VIF_STATE_PRINT_INT(ap.bcast_hlid);
 571                         VIF_STATE_PRINT_LHEX(ap.sta_hlid_map[0]);
 572                         VIF_STATE_PRINT_INT(ap.mgmt_rate_idx);
 573                         VIF_STATE_PRINT_INT(ap.bcast_rate_idx);
 574                         VIF_STATE_PRINT_INT(ap.ucast_rate_idx[0]);
 575                         VIF_STATE_PRINT_INT(ap.ucast_rate_idx[1]);
 576                         VIF_STATE_PRINT_INT(ap.ucast_rate_idx[2]);
 577                         VIF_STATE_PRINT_INT(ap.ucast_rate_idx[3]);
 578                 }
 579                 VIF_STATE_PRINT_INT(last_tx_hlid);
 580                 VIF_STATE_PRINT_LHEX(links_map[0]);
 581                 VIF_STATE_PRINT_NSTR(ssid, wlvif->ssid_len);
 582                 VIF_STATE_PRINT_INT(band);
 583                 VIF_STATE_PRINT_INT(channel);
 584                 VIF_STATE_PRINT_HEX(bitrate_masks[0]);
 585                 VIF_STATE_PRINT_HEX(bitrate_masks[1]);
 586                 VIF_STATE_PRINT_HEX(basic_rate_set);
 587                 VIF_STATE_PRINT_HEX(basic_rate);
 588                 VIF_STATE_PRINT_HEX(rate_set);
 589                 VIF_STATE_PRINT_INT(beacon_int);
 590                 VIF_STATE_PRINT_INT(default_key);
 591                 VIF_STATE_PRINT_INT(aid);
 592                 VIF_STATE_PRINT_INT(psm_entry_retry);
 593                 VIF_STATE_PRINT_INT(power_level);
 594                 VIF_STATE_PRINT_INT(rssi_thold);
 595                 VIF_STATE_PRINT_INT(last_rssi_event);
 596                 VIF_STATE_PRINT_INT(ba_support);
 597                 VIF_STATE_PRINT_INT(ba_allowed);
 598                 VIF_STATE_PRINT_LLHEX(tx_security_seq);
 599                 VIF_STATE_PRINT_INT(tx_security_last_seq_lsb);
 600         }
 601
 602 #undef VIF_STATE_PRINT_INT
 603 #undef VIF_STATE_PRINT_LONG
 604 #undef VIF_STATE_PRINT_HEX
 605 #undef VIF_STATE_PRINT_LHEX
 606 #undef VIF_STATE_PRINT_LLHEX
 607 #undef VIF_STATE_PRINT_STR
 608 #undef VIF_STATE_PRINT_NSTR
 609 #undef VIF_STATE_PRINT
 610
 611         mutex_unlock(&wl->mutex);
 612
 613         ret = simple_read_from_buffer(user_buf, count, ppos, buf, res);
 614         kfree(buf);
 615         return ret;
 616 }
 617
 618 static const struct file_operations vifs_state_ops = {
 619         .read = vifs_state_read,
 620         .open = simple_open,
 621         .llseek = default_llseek,
 622 };
 623
 624 static ssize_t dtim_interval_read(struct file *file, char __user *user_buf,
 625                                   size_t count, loff_t *ppos)
 626 {
 627         struct wl1271 *wl = file->private_data;
 628         u8 value;
 629
 630         if (wl->conf.conn.wake_up_event == CONF_WAKE_UP_EVENT_DTIM ||
 631             wl->conf.conn.wake_up_event == CONF_WAKE_UP_EVENT_N_DTIM)
 632                 value = wl->conf.conn.listen_interval;
 633         else
 634                 value = 0;
 635
 636         return wl1271_format_buffer(user_buf, count, ppos, "%d\n", value);
 637 }
 638
 639 static ssize_t dtim_interval_write(struct file *file,
 640                                    const char __user *user_buf,
 641                                    size_t count, loff_t *ppos)
 642 {
 643         struct wl1271 *wl = file->private_data;
 644         unsigned long value;
 645         int ret;
 646
 647         ret = kstrtoul_from_user(user_buf, count, 10, &value);
 648         if (ret < 0) {
 649                 wl1271_warning("illegal value for dtim_interval");
 650                 return -EINVAL;
 651         }
 652
 653         if (value < 1 || value > 10) {
 654                 wl1271_warning("dtim value is not in valid range");
 655                 return -ERANGE;
 656         }
 657
 658         mutex_lock(&wl->mutex);
 659
 660         wl->conf.conn.listen_interval = value;
 661         /* for some reason there are different event types for 1 and >1 */
 662         if (value == 1)
 663                 wl->conf.conn.wake_up_event = CONF_WAKE_UP_EVENT_DTIM;
 664         else
 665                 wl->conf.conn.wake_up_event = CONF_WAKE_UP_EVENT_N_DTIM;
 666
 667         /*
 668          * we don't reconfigure ACX_WAKE_UP_CONDITIONS now, so it will only
 669          * take effect on the next time we enter psm.
 670          */
 671         mutex_unlock(&wl->mutex);
 672         return count;
 673 }
 674
 675 static const struct file_operations dtim_interval_ops = {
 676         .read = dtim_interval_read,
 677         .write = dtim_interval_write,
 678         .open = simple_open,
 679         .llseek = default_llseek,
 680 };
 681
 682
 683
 684 static ssize_t suspend_dtim_interval_read(struct file *file,
 685                                           char __user *user_buf,
 686                                           size_t count, loff_t *ppos)
 687 {
 688         struct wl1271 *wl = file->private_data;
 689         u8 value;
 690
 691         if (wl->conf.conn.suspend_wake_up_event == CONF_WAKE_UP_EVENT_DTIM ||
 692             wl->conf.conn.suspend_wake_up_event == CONF_WAKE_UP_EVENT_N_DTIM)
 693                 value = wl->conf.conn.suspend_listen_interval;
 694         else
 695                 value = 0;
 696
 697         return wl1271_format_buffer(user_buf, count, ppos, "%d\n", value);
 698 }
 699
 700 static ssize_t suspend_dtim_interval_write(struct file *file,
 701                                            const char __user *user_buf,
 702                                            size_t count, loff_t *ppos)
 703 {
 704         struct wl1271 *wl = file->private_data;
 705         unsigned long value;
 706         int ret;
 707
 708         ret = kstrtoul_from_user(user_buf, count, 10, &value);
 709         if (ret < 0) {
 710                 wl1271_warning("illegal value for suspend_dtim_interval");
 711                 return -EINVAL;
 712         }
 713
 714         if (value < 1 || value > 10) {
 715                 wl1271_warning("suspend_dtim value is not in valid range");
 716                 return -ERANGE;
 717         }
 718
 719         mutex_lock(&wl->mutex);
 720
 721         wl->conf.conn.suspend_listen_interval = value;
 722         /* for some reason there are different event types for 1 and >1 */
 723         if (value == 1)
 724                 wl->conf.conn.suspend_wake_up_event = CONF_WAKE_UP_EVENT_DTIM;
 725         else
 726                 wl->conf.conn.suspend_wake_up_event = CONF_WAKE_UP_EVENT_N_DTIM;
 727
 728         mutex_unlock(&wl->mutex);
 729         return count;
 730 }
 731
 732
 733 static const struct file_operations suspend_dtim_interval_ops = {
 734         .read = suspend_dtim_interval_read,
 735         .write = suspend_dtim_interval_write,
 736         .open = simple_open,
 737         .llseek = default_llseek,
 738 };
 739
 740 static ssize_t beacon_interval_read(struct file *file, char __user *user_buf,
 741                                     size_t count, loff_t *ppos)
 742 {
 743         struct wl1271 *wl = file->private_data;
 744         u8 value;
 745
 746         if (wl->conf.conn.wake_up_event == CONF_WAKE_UP_EVENT_BEACON ||
 747             wl->conf.conn.wake_up_event == CONF_WAKE_UP_EVENT_N_BEACONS)
 748                 value = wl->conf.conn.listen_interval;
 749         else
 750                 value = 0;
 751
 752         return wl1271_format_buffer(user_buf, count, ppos, "%d\n", value);
 753 }
 754
 755 static ssize_t beacon_interval_write(struct file *file,
 756                                      const char __user *user_buf,
 757                                      size_t count, loff_t *ppos)
 758 {
 759         struct wl1271 *wl = file->private_data;
 760         unsigned long value;
 761         int ret;
 762
 763         ret = kstrtoul_from_user(user_buf, count, 10, &value);
 764         if (ret < 0) {
 765                 wl1271_warning("illegal value for beacon_interval");
 766                 return -EINVAL;
 767         }
 768
 769         if (value < 1 || value > 255) {
 770                 wl1271_warning("beacon interval value is not in valid range");
 771                 return -ERANGE;
 772         }
 773
 774         mutex_lock(&wl->mutex);
 775
 776         wl->conf.conn.listen_interval = value;
 777         /* for some reason there are different event types for 1 and >1 */
 778         if (value == 1)
 779                 wl->conf.conn.wake_up_event = CONF_WAKE_UP_EVENT_BEACON;
 780         else
 781                 wl->conf.conn.wake_up_event = CONF_WAKE_UP_EVENT_N_BEACONS;
 782
 783         /*
 784          * we don't reconfigure ACX_WAKE_UP_CONDITIONS now, so it will only
 785          * take effect on the next time we enter psm.
 786          */
 787         mutex_unlock(&wl->mutex);
 788         return count;
 789 }
 790
 791 static const struct file_operations beacon_interval_ops = {
 792         .read = beacon_interval_read,
 793         .write = beacon_interval_write,
 794         .open = simple_open,
 795         .llseek = default_llseek,
 796 };
 797
 798 static ssize_t rx_streaming_interval_write(struct file *file,
 799                            const char __user *user_buf,
 800                            size_t count, loff_t *ppos)
 801 {
 802         struct wl1271 *wl = file->private_data;
 803         struct wl12xx_vif *wlvif;
 804         unsigned long value;
 805         int ret;
 806
 807         ret = kstrtoul_from_user(user_buf, count, 10, &value);
 808         if (ret < 0) {
 809                 wl1271_warning("illegal value in rx_streaming_interval!");
 810                 return -EINVAL;
 811         }
 812
 813         /* valid values: 0, 10-100 */
 814         if (value && (value < 10 || value > 100)) {
 815                 wl1271_warning("value is not in range!");
 816                 return -ERANGE;
 817         }
 818
 819         mutex_lock(&wl->mutex);
 820
 821         wl->conf.rx_streaming.interval = value;
 822
 823         ret = wl1271_ps_elp_wakeup(wl);
 824         if (ret < 0)
 825                 goto out;
 826
 827         wl12xx_for_each_wlvif_sta(wl, wlvif) {
 828                 wl1271_recalc_rx_streaming(wl, wlvif);
 829         }
 830
 831         wl1271_ps_elp_sleep(wl);
 832 out:
 833         mutex_unlock(&wl->mutex);
 834         return count;
 835 }
 836
 837 static ssize_t rx_streaming_interval_read(struct file *file,
 838                             char __user *userbuf,
 839                             size_t count, loff_t *ppos)
 840 {
 841         struct wl1271 *wl = file->private_data;
 842         return wl1271_format_buffer(userbuf, count, ppos,
 843                                     "%d\n", wl->conf.rx_streaming.interval);
 844 }
 845
 846 static const struct file_operations rx_streaming_interval_ops = {
 847         .read = rx_streaming_interval_read,
 848         .write = rx_streaming_interval_write,
 849         .open = simple_open,
 850         .llseek = default_llseek,
 851 };
 852
 853 static ssize_t rx_streaming_always_write(struct file *file,
 854                            const char __user *user_buf,
 855                            size_t count, loff_t *ppos)
 856 {
 857         struct wl1271 *wl = file->private_data;
 858         struct wl12xx_vif *wlvif;
 859         unsigned long value;
 860         int ret;
 861
 862         ret = kstrtoul_from_user(user_buf, count, 10, &value);
 863         if (ret < 0) {
 864                 wl1271_warning("illegal value in rx_streaming_write!");
 865                 return -EINVAL;
 866         }
 867
 868         /* valid values: 0, 10-100 */
 869         if (!(value == 0 || value == 1)) {
 870                 wl1271_warning("value is not in valid!");
 871                 return -EINVAL;
 872         }
 873
 874         mutex_lock(&wl->mutex);
 875
 876         wl->conf.rx_streaming.always = value;
 877
 878         ret = wl1271_ps_elp_wakeup(wl);
 879         if (ret < 0)
 880                 goto out;
 881
 882         wl12xx_for_each_wlvif_sta(wl, wlvif) {
 883                 wl1271_recalc_rx_streaming(wl, wlvif);
 884         }
 885
 886         wl1271_ps_elp_sleep(wl);
 887 out:
 888         mutex_unlock(&wl->mutex);
 889         return count;
 890 }
 891
 892 static ssize_t rx_streaming_always_read(struct file *file,
 893                             char __user *userbuf,
 894                             size_t count, loff_t *ppos)
 895 {
 896         struct wl1271 *wl = file->private_data;
 897         return wl1271_format_buffer(userbuf, count, ppos,
 898                                     "%d\n", wl->conf.rx_streaming.always);
 899 }
 900
 901 static const struct file_operations rx_streaming_always_ops = {
 902         .read = rx_streaming_always_read,
 903         .write = rx_streaming_always_write,
 904         .open = simple_open,
 905         .llseek = default_llseek,
 906 };
 907
 908 static ssize_t beacon_filtering_write(struct file *file,
 909                                       const char __user *user_buf,
 910                                       size_t count, loff_t *ppos)
 911 {
 912         struct wl1271 *wl = file->private_data;
 913         struct wl12xx_vif *wlvif;
 914         char buf[10];
 915         size_t len;
 916         unsigned long value;
 917         int ret;
 918
 919         len = min(count, sizeof(buf) - 1);
 920         if (copy_from_user(buf, user_buf, len))
 921                 return -EFAULT;
 922         buf[len] = '\0';
 923
 924         ret = kstrtoul(buf, 0, &value);
 925         if (ret < 0) {
 926                 wl1271_warning("illegal value for beacon_filtering!");
 927                 return -EINVAL;
 928         }
 929
 930         mutex_lock(&wl->mutex);
 931
 932         ret = wl1271_ps_elp_wakeup(wl);
 933         if (ret < 0)
 934                 goto out;
 935
 936         wl12xx_for_each_wlvif(wl, wlvif) {
 937                 ret = wl1271_acx_beacon_filter_opt(wl, wlvif, !!value);
 938         }
 939
 940         wl1271_ps_elp_sleep(wl);
 941 out:
 942         mutex_unlock(&wl->mutex);
 943         return count;
 944 }
 945
 946 static const struct file_operations beacon_filtering_ops = {
 947         .write = beacon_filtering_write,
 948         .open = simple_open,
 949         .llseek = default_llseek,
 950 };
 951
 952 static ssize_t fw_stats_raw_read(struct file *file,
 953                                  char __user *userbuf,
 954                                  size_t count, loff_t *ppos)
 955 {
 956         struct wl1271 *wl = file->private_data;
 957
 958         wl1271_debugfs_update_stats(wl);
 959
 960         return simple_read_from_buffer(userbuf, count, ppos,
 961                                        wl->stats.fw_stats,
 962                                        wl->stats.fw_stats_len);
 963 }
 964
 965 static const struct file_operations fw_stats_raw_ops = {
 966         .read = fw_stats_raw_read,
 967         .open = simple_open,
 968         .llseek = default_llseek,
 969 };
 970
 971 static ssize_t sleep_auth_read(struct file *file, char __user *user_buf,
 972                                size_t count, loff_t *ppos)
 973 {
 974         struct wl1271 *wl = file->private_data;
 975
 976         return wl1271_format_buffer(user_buf, count,
 977                                     ppos, "%d\n",
 978                                     wl->sleep_auth);
 979 }
 980
 981 static ssize_t sleep_auth_write(struct file *file,
 982                                 const char __user *user_buf,
 983                                 size_t count, loff_t *ppos)
 984 {
 985         struct wl1271 *wl = file->private_data;
 986         unsigned long value;
 987         int ret;
 988
 989         ret = kstrtoul_from_user(user_buf, count, 0, &value);
 990         if (ret < 0) {
 991                 wl1271_warning("illegal value in sleep_auth");
 992                 return -EINVAL;
 993         }
 994
 995         if (value > WL1271_PSM_MAX) {
 996                 wl1271_warning("sleep_auth must be between 0 and %d",
 997                                WL1271_PSM_MAX);
 998                 return -ERANGE;
 999         }
1000
1001         mutex_lock(&wl->mutex);
1002
1003         wl->conf.conn.sta_sleep_auth = value;
1004
1005         if (unlikely(wl->state != WLCORE_STATE_ON)) {
1006                 /* this will show up on "read" in case we are off */
1007                 wl->sleep_auth = value;
1008                 goto out;
1009         }
1010
1011         ret = wl1271_ps_elp_wakeup(wl);
1012         if (ret < 0)
1013                 goto out;
1014
1015         ret = wl1271_acx_sleep_auth(wl, value);
1016         if (ret < 0)
1017                 goto out_sleep;
1018
1019 out_sleep:
1020         wl1271_ps_elp_sleep(wl);
1021 out:
1022         mutex_unlock(&wl->mutex);
1023         return count;
1024 }
1025
1026 static const struct file_operations sleep_auth_ops = {
1027         .read = sleep_auth_read,
1028         .write = sleep_auth_write,
1029         .open = simple_open,
1030         .llseek = default_llseek,
1031 };
1032
1033 static ssize_t dev_mem_read(struct file *file,
1034              char __user *user_buf, size_t count,
1035              loff_t *ppos)
1036 {
1037         struct wl1271 *wl = file->private_data;
1038         struct wlcore_partition_set part, old_part;
1039         size_t bytes = count;
1040         int ret;
1041         char *buf;
1042
1043         /* only requests of dword-aligned size and offset are supported */
1044         if (bytes % 4)
1045                 return -EINVAL;
1046
1047         if (*ppos % 4)
1048                 return -EINVAL;
1049
1050         /* function should return in reasonable time */
1051         bytes = min(bytes, WLCORE_MAX_BLOCK_SIZE);
1052
1053         if (bytes == 0)
1054                 return -EINVAL;
1055
1056         memset(&part, 0, sizeof(part));
1057         part.mem.start = file->f_pos;
1058         part.mem.size = bytes;
1059
1060         buf = kmalloc(bytes, GFP_KERNEL);
1061         if (!buf)
1062                 return -ENOMEM;
1063
1064         mutex_lock(&wl->mutex);
1065
1066         if (unlikely(wl->state == WLCORE_STATE_OFF)) {
1067                 ret = -EFAULT;
1068                 goto skip_read;
1069         }
1070
1071         /*
1072          * Don't fail if elp_wakeup returns an error, so the device's memory
1073          * could be read even if the FW crashed
1074          */
1075         wl1271_ps_elp_wakeup(wl);
1076
1077         /* store current partition and switch partition */
1078         memcpy(&old_part, &wl->curr_part, sizeof(old_part));
1079         ret = wlcore_set_partition(wl, &part);
1080         if (ret < 0)
1081                 goto part_err;
1082
1083         ret = wlcore_raw_read(wl, 0, buf, bytes, false);
1084         if (ret < 0)
1085                 goto read_err;
1086
1087 read_err:
1088         /* recover partition */
1089         ret = wlcore_set_partition(wl, &old_part);
1090         if (ret < 0)
1091                 goto part_err;
1092
1093 part_err:
1094         wl1271_ps_elp_sleep(wl);
1095
1096 skip_read:
1097         mutex_unlock(&wl->mutex);
1098
1099         if (ret == 0) {
1100                 ret = copy_to_user(user_buf, buf, bytes);
1101                 if (ret < bytes) {
1102                         bytes -= ret;
1103                         *ppos += bytes;
1104                         ret = 0;
1105                 } else {
1106                         ret = -EFAULT;
1107                 }
1108         }
1109
1110         kfree(buf);
1111
1112         return ((ret == 0) ? bytes : ret);
1113 }
1114
1115 static ssize_t dev_mem_write(struct file *file, const char __user *user_buf,
1116                 size_t count, loff_t *ppos)
1117 {
1118         struct wl1271 *wl = file->private_data;
1119         struct wlcore_partition_set part, old_part;
1120         size_t bytes = count;
1121         int ret;
1122         char *buf;
1123
1124         /* only requests of dword-aligned size and offset are supported */
1125         if (bytes % 4)
1126                 return -EINVAL;
1127
1128         if (*ppos % 4)
1129                 return -EINVAL;
1130
1131         /* function should return in reasonable time */
1132         bytes = min(bytes, WLCORE_MAX_BLOCK_SIZE);
1133
1134         if (bytes == 0)
1135                 return -EINVAL;
1136
1137         memset(&part, 0, sizeof(part));
1138         part.mem.start = file->f_pos;
1139         part.mem.size = bytes;
1140
1141         buf = kmalloc(bytes, GFP_KERNEL);
1142         if (!buf)
1143                 return -ENOMEM;
1144
1145         ret = copy_from_user(buf, user_buf, bytes);
1146         if (ret) {
1147                 ret = -EFAULT;
1148                 goto err_out;
1149         }
1150
1151         mutex_lock(&wl->mutex);
1152
1153         if (unlikely(wl->state == WLCORE_STATE_OFF)) {
1154                 ret = -EFAULT;
1155                 goto skip_write;
1156         }
1157
1158         /*
1159          * Don't fail if elp_wakeup returns an error, so the device's memory
1160          * could be read even if the FW crashed
1161          */
1162         wl1271_ps_elp_wakeup(wl);
1163
1164         /* store current partition and switch partition */
1165         memcpy(&old_part, &wl->curr_part, sizeof(old_part));
1166         ret = wlcore_set_partition(wl, &part);
1167         if (ret < 0)
1168                 goto part_err;
1169
1170         ret = wlcore_raw_write(wl, 0, buf, bytes, false);
1171         if (ret < 0)
1172                 goto write_err;
1173
1174 write_err:
1175         /* recover partition */
1176         ret = wlcore_set_partition(wl, &old_part);
1177         if (ret < 0)
1178                 goto part_err;
1179
1180 part_err:
1181         wl1271_ps_elp_sleep(wl);
1182
1183 skip_write:
1184         mutex_unlock(&wl->mutex);
1185
1186         if (ret == 0)
1187                 *ppos += bytes;
1188
1189 err_out:
1190         kfree(buf);
1191
1192         return ((ret == 0) ? bytes : ret);
1193 }
1194
1195 static loff_t dev_mem_seek(struct file *file, loff_t offset, int orig)
1196 {
1197         loff_t ret;
1198
1199         /* only requests of dword-aligned size and offset are supported */
1200         if (offset % 4)
1201                 return -EINVAL;
1202
1203         switch (orig) {
1204         case SEEK_SET:
1205                 file->f_pos = offset;
1206                 ret = file->f_pos;
1207                 break;
1208         case SEEK_CUR:
1209                 file->f_pos += offset;
1210                 ret = file->f_pos;
1211                 break;
1212         default:
1213                 ret = -EINVAL;
1214         }
1215
1216         return ret;
1217 }
1218
1219 static const struct file_operations dev_mem_ops = {
1220         .open = simple_open,
1221         .read = dev_mem_read,
1222         .write = dev_mem_write,
1223         .llseek = dev_mem_seek,
1224 };
1225
1226 static int wl1271_debugfs_add_files(struct wl1271 *wl,
1227                                     struct dentry *rootdir)
1228 {
1229         int ret = 0;
1230         struct dentry *entry, *streaming;
1231
1232         DEBUGFS_ADD(tx_queue_len, rootdir);
1233         DEBUGFS_ADD(retry_count, rootdir);
1234         DEBUGFS_ADD(excessive_retries, rootdir);
1235
1236         DEBUGFS_ADD(gpio_power, rootdir);
1237         DEBUGFS_ADD(start_recovery, rootdir);
1238         DEBUGFS_ADD(driver_state, rootdir);
1239         DEBUGFS_ADD(vifs_state, rootdir);
1240         DEBUGFS_ADD(dtim_interval, rootdir);
1241         DEBUGFS_ADD(suspend_dtim_interval, rootdir);
1242         DEBUGFS_ADD(beacon_interval, rootdir);
1243         DEBUGFS_ADD(beacon_filtering, rootdir);
1244         DEBUGFS_ADD(dynamic_ps_timeout, rootdir);
1245         DEBUGFS_ADD(forced_ps, rootdir);
1246         DEBUGFS_ADD(split_scan_timeout, rootdir);
1247         DEBUGFS_ADD(irq_pkt_threshold, rootdir);
1248         DEBUGFS_ADD(irq_blk_threshold, rootdir);
1249         DEBUGFS_ADD(irq_timeout, rootdir);
1250         DEBUGFS_ADD(fw_stats_raw, rootdir);
1251         DEBUGFS_ADD(sleep_auth, rootdir);
1252
1253         streaming = debugfs_create_dir("rx_streaming", rootdir);
1254         if (!streaming || IS_ERR(streaming))
1255                 goto err;
1256
1257         DEBUGFS_ADD_PREFIX(rx_streaming, interval, streaming);
1258         DEBUGFS_ADD_PREFIX(rx_streaming, always, streaming);
1259
1260         DEBUGFS_ADD_PREFIX(dev, mem, rootdir);
1261
1262         return 0;
1263
1264 err:
1265         if (IS_ERR(entry))
1266                 ret = PTR_ERR(entry);
1267         else
1268                 ret = -ENOMEM;
1269
1270         return ret;
1271 }
1272
1273 void wl1271_debugfs_reset(struct wl1271 *wl)
1274 {
1275         if (!wl->stats.fw_stats)
1276                 return;
1277
1278         memset(wl->stats.fw_stats, 0, wl->stats.fw_stats_len);
1279         wl->stats.retry_count = 0;
1280         wl->stats.excessive_retries = 0;
1281 }
1282
1283 int wl1271_debugfs_init(struct wl1271 *wl)
1284 {
1285         int ret;
1286         struct dentry *rootdir;
1287
1288         rootdir = debugfs_create_dir(KBUILD_MODNAME,
1289                                      wl->hw->wiphy->debugfsdir);
1290
1291         if (IS_ERR(rootdir)) {
1292                 ret = PTR_ERR(rootdir);
1293                 goto out;
1294         }
1295
1296         wl->stats.fw_stats = kzalloc(wl->stats.fw_stats_len, GFP_KERNEL);
1297         if (!wl->stats.fw_stats) {
1298                 ret = -ENOMEM;
1299                 goto out_remove;
1300         }
1301
1302         wl->stats.fw_stats_update = jiffies;
1303
1304         ret = wl1271_debugfs_add_files(wl, rootdir);
1305         if (ret < 0)
1306                 goto out_exit;
1307
1308         ret = wlcore_debugfs_init(wl, rootdir);
1309         if (ret < 0)
1310                 goto out_exit;
1311
1312         goto out;
1313
1314 out_exit:
1315         wl1271_debugfs_exit(wl);
1316
1317 out_remove:
1318         debugfs_remove_recursive(rootdir);
1319
1320 out:
1321         return ret;
1322 }
1323
1324 void wl1271_debugfs_exit(struct wl1271 *wl)
1325 {
1326         kfree(wl->stats.fw_stats);
1327         wl->stats.fw_stats = NULL;
1328 }