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.basic_rate_idx);
 564                         VIF_STATE_PRINT_INT(sta.ap_rate_idx);
 565                         VIF_STATE_PRINT_INT(sta.p2p_rate_idx);
 566                         VIF_STATE_PRINT_INT(sta.qos);
 567                 } else {
 568                         VIF_STATE_PRINT_INT(ap.global_hlid);
 569                         VIF_STATE_PRINT_INT(ap.bcast_hlid);
 570                         VIF_STATE_PRINT_LHEX(ap.sta_hlid_map[0]);
 571                         VIF_STATE_PRINT_INT(ap.mgmt_rate_idx);
 572                         VIF_STATE_PRINT_INT(ap.bcast_rate_idx);
 573                         VIF_STATE_PRINT_INT(ap.ucast_rate_idx[0]);
 574                         VIF_STATE_PRINT_INT(ap.ucast_rate_idx[1]);
 575                         VIF_STATE_PRINT_INT(ap.ucast_rate_idx[2]);
 576                         VIF_STATE_PRINT_INT(ap.ucast_rate_idx[3]);
 577                 }
 578                 VIF_STATE_PRINT_INT(last_tx_hlid);
 579                 VIF_STATE_PRINT_INT(tx_queue_count[0]);
 580                 VIF_STATE_PRINT_INT(tx_queue_count[1]);
 581                 VIF_STATE_PRINT_INT(tx_queue_count[2]);
 582                 VIF_STATE_PRINT_INT(tx_queue_count[3]);
 583                 VIF_STATE_PRINT_LHEX(links_map[0]);
 584                 VIF_STATE_PRINT_NSTR(ssid, wlvif->ssid_len);
 585                 VIF_STATE_PRINT_INT(band);
 586                 VIF_STATE_PRINT_INT(channel);
 587                 VIF_STATE_PRINT_HEX(bitrate_masks[0]);
 588                 VIF_STATE_PRINT_HEX(bitrate_masks[1]);
 589                 VIF_STATE_PRINT_HEX(basic_rate_set);
 590                 VIF_STATE_PRINT_HEX(basic_rate);
 591                 VIF_STATE_PRINT_HEX(rate_set);
 592                 VIF_STATE_PRINT_INT(beacon_int);
 593                 VIF_STATE_PRINT_INT(default_key);
 594                 VIF_STATE_PRINT_INT(aid);
 595                 VIF_STATE_PRINT_INT(psm_entry_retry);
 596                 VIF_STATE_PRINT_INT(power_level);
 597                 VIF_STATE_PRINT_INT(rssi_thold);
 598                 VIF_STATE_PRINT_INT(last_rssi_event);
 599                 VIF_STATE_PRINT_INT(ba_support);
 600                 VIF_STATE_PRINT_INT(ba_allowed);
 601                 VIF_STATE_PRINT_LLHEX(tx_security_seq);
 602                 VIF_STATE_PRINT_INT(tx_security_last_seq_lsb);
 603         }
 604
 605 #undef VIF_STATE_PRINT_INT
 606 #undef VIF_STATE_PRINT_LONG
 607 #undef VIF_STATE_PRINT_HEX
 608 #undef VIF_STATE_PRINT_LHEX
 609 #undef VIF_STATE_PRINT_LLHEX
 610 #undef VIF_STATE_PRINT_STR
 611 #undef VIF_STATE_PRINT_NSTR
 612 #undef VIF_STATE_PRINT
 613
 614         mutex_unlock(&wl->mutex);
 615
 616         ret = simple_read_from_buffer(user_buf, count, ppos, buf, res);
 617         kfree(buf);
 618         return ret;
 619 }
 620
 621 static const struct file_operations vifs_state_ops = {
 622         .read = vifs_state_read,
 623         .open = simple_open,
 624         .llseek = default_llseek,
 625 };
 626
 627 static ssize_t dtim_interval_read(struct file *file, char __user *user_buf,
 628                                   size_t count, loff_t *ppos)
 629 {
 630         struct wl1271 *wl = file->private_data;
 631         u8 value;
 632
 633         if (wl->conf.conn.wake_up_event == CONF_WAKE_UP_EVENT_DTIM ||
 634             wl->conf.conn.wake_up_event == CONF_WAKE_UP_EVENT_N_DTIM)
 635                 value = wl->conf.conn.listen_interval;
 636         else
 637                 value = 0;
 638
 639         return wl1271_format_buffer(user_buf, count, ppos, "%d\n", value);
 640 }
 641
 642 static ssize_t dtim_interval_write(struct file *file,
 643                                    const char __user *user_buf,
 644                                    size_t count, loff_t *ppos)
 645 {
 646         struct wl1271 *wl = file->private_data;
 647         unsigned long value;
 648         int ret;
 649
 650         ret = kstrtoul_from_user(user_buf, count, 10, &value);
 651         if (ret < 0) {
 652                 wl1271_warning("illegal value for dtim_interval");
 653                 return -EINVAL;
 654         }
 655
 656         if (value < 1 || value > 10) {
 657                 wl1271_warning("dtim value is not in valid range");
 658                 return -ERANGE;
 659         }
 660
 661         mutex_lock(&wl->mutex);
 662
 663         wl->conf.conn.listen_interval = value;
 664         /* for some reason there are different event types for 1 and >1 */
 665         if (value == 1)
 666                 wl->conf.conn.wake_up_event = CONF_WAKE_UP_EVENT_DTIM;
 667         else
 668                 wl->conf.conn.wake_up_event = CONF_WAKE_UP_EVENT_N_DTIM;
 669
 670         /*
 671          * we don't reconfigure ACX_WAKE_UP_CONDITIONS now, so it will only
 672          * take effect on the next time we enter psm.
 673          */
 674         mutex_unlock(&wl->mutex);
 675         return count;
 676 }
 677
 678 static const struct file_operations dtim_interval_ops = {
 679         .read = dtim_interval_read,
 680         .write = dtim_interval_write,
 681         .open = simple_open,
 682         .llseek = default_llseek,
 683 };
 684
 685
 686
 687 static ssize_t suspend_dtim_interval_read(struct file *file,
 688                                           char __user *user_buf,
 689                                           size_t count, loff_t *ppos)
 690 {
 691         struct wl1271 *wl = file->private_data;
 692         u8 value;
 693
 694         if (wl->conf.conn.suspend_wake_up_event == CONF_WAKE_UP_EVENT_DTIM ||
 695             wl->conf.conn.suspend_wake_up_event == CONF_WAKE_UP_EVENT_N_DTIM)
 696                 value = wl->conf.conn.suspend_listen_interval;
 697         else
 698                 value = 0;
 699
 700         return wl1271_format_buffer(user_buf, count, ppos, "%d\n", value);
 701 }
 702
 703 static ssize_t suspend_dtim_interval_write(struct file *file,
 704                                            const char __user *user_buf,
 705                                            size_t count, loff_t *ppos)
 706 {
 707         struct wl1271 *wl = file->private_data;
 708         unsigned long value;
 709         int ret;
 710
 711         ret = kstrtoul_from_user(user_buf, count, 10, &value);
 712         if (ret < 0) {
 713                 wl1271_warning("illegal value for suspend_dtim_interval");
 714                 return -EINVAL;
 715         }
 716
 717         if (value < 1 || value > 10) {
 718                 wl1271_warning("suspend_dtim value is not in valid range");
 719                 return -ERANGE;
 720         }
 721
 722         mutex_lock(&wl->mutex);
 723
 724         wl->conf.conn.suspend_listen_interval = value;
 725         /* for some reason there are different event types for 1 and >1 */
 726         if (value == 1)
 727                 wl->conf.conn.suspend_wake_up_event = CONF_WAKE_UP_EVENT_DTIM;
 728         else
 729                 wl->conf.conn.suspend_wake_up_event = CONF_WAKE_UP_EVENT_N_DTIM;
 730
 731         mutex_unlock(&wl->mutex);
 732         return count;
 733 }
 734
 735
 736 static const struct file_operations suspend_dtim_interval_ops = {
 737         .read = suspend_dtim_interval_read,
 738         .write = suspend_dtim_interval_write,
 739         .open = simple_open,
 740         .llseek = default_llseek,
 741 };
 742
 743 static ssize_t beacon_interval_read(struct file *file, char __user *user_buf,
 744                                     size_t count, loff_t *ppos)
 745 {
 746         struct wl1271 *wl = file->private_data;
 747         u8 value;
 748
 749         if (wl->conf.conn.wake_up_event == CONF_WAKE_UP_EVENT_BEACON ||
 750             wl->conf.conn.wake_up_event == CONF_WAKE_UP_EVENT_N_BEACONS)
 751                 value = wl->conf.conn.listen_interval;
 752         else
 753                 value = 0;
 754
 755         return wl1271_format_buffer(user_buf, count, ppos, "%d\n", value);
 756 }
 757
 758 static ssize_t beacon_interval_write(struct file *file,
 759                                      const char __user *user_buf,
 760                                      size_t count, loff_t *ppos)
 761 {
 762         struct wl1271 *wl = file->private_data;
 763         unsigned long value;
 764         int ret;
 765
 766         ret = kstrtoul_from_user(user_buf, count, 10, &value);
 767         if (ret < 0) {
 768                 wl1271_warning("illegal value for beacon_interval");
 769                 return -EINVAL;
 770         }
 771
 772         if (value < 1 || value > 255) {
 773                 wl1271_warning("beacon interval value is not in valid range");
 774                 return -ERANGE;
 775         }
 776
 777         mutex_lock(&wl->mutex);
 778
 779         wl->conf.conn.listen_interval = value;
 780         /* for some reason there are different event types for 1 and >1 */
 781         if (value == 1)
 782                 wl->conf.conn.wake_up_event = CONF_WAKE_UP_EVENT_BEACON;
 783         else
 784                 wl->conf.conn.wake_up_event = CONF_WAKE_UP_EVENT_N_BEACONS;
 785
 786         /*
 787          * we don't reconfigure ACX_WAKE_UP_CONDITIONS now, so it will only
 788          * take effect on the next time we enter psm.
 789          */
 790         mutex_unlock(&wl->mutex);
 791         return count;
 792 }
 793
 794 static const struct file_operations beacon_interval_ops = {
 795         .read = beacon_interval_read,
 796         .write = beacon_interval_write,
 797         .open = simple_open,
 798         .llseek = default_llseek,
 799 };
 800
 801 static ssize_t rx_streaming_interval_write(struct file *file,
 802                            const char __user *user_buf,
 803                            size_t count, loff_t *ppos)
 804 {
 805         struct wl1271 *wl = file->private_data;
 806         struct wl12xx_vif *wlvif;
 807         unsigned long value;
 808         int ret;
 809
 810         ret = kstrtoul_from_user(user_buf, count, 10, &value);
 811         if (ret < 0) {
 812                 wl1271_warning("illegal value in rx_streaming_interval!");
 813                 return -EINVAL;
 814         }
 815
 816         /* valid values: 0, 10-100 */
 817         if (value && (value < 10 || value > 100)) {
 818                 wl1271_warning("value is not in range!");
 819                 return -ERANGE;
 820         }
 821
 822         mutex_lock(&wl->mutex);
 823
 824         wl->conf.rx_streaming.interval = value;
 825
 826         ret = wl1271_ps_elp_wakeup(wl);
 827         if (ret < 0)
 828                 goto out;
 829
 830         wl12xx_for_each_wlvif_sta(wl, wlvif) {
 831                 wl1271_recalc_rx_streaming(wl, wlvif);
 832         }
 833
 834         wl1271_ps_elp_sleep(wl);
 835 out:
 836         mutex_unlock(&wl->mutex);
 837         return count;
 838 }
 839
 840 static ssize_t rx_streaming_interval_read(struct file *file,
 841                             char __user *userbuf,
 842                             size_t count, loff_t *ppos)
 843 {
 844         struct wl1271 *wl = file->private_data;
 845         return wl1271_format_buffer(userbuf, count, ppos,
 846                                     "%d\n", wl->conf.rx_streaming.interval);
 847 }
 848
 849 static const struct file_operations rx_streaming_interval_ops = {
 850         .read = rx_streaming_interval_read,
 851         .write = rx_streaming_interval_write,
 852         .open = simple_open,
 853         .llseek = default_llseek,
 854 };
 855
 856 static ssize_t rx_streaming_always_write(struct file *file,
 857                            const char __user *user_buf,
 858                            size_t count, loff_t *ppos)
 859 {
 860         struct wl1271 *wl = file->private_data;
 861         struct wl12xx_vif *wlvif;
 862         unsigned long value;
 863         int ret;
 864
 865         ret = kstrtoul_from_user(user_buf, count, 10, &value);
 866         if (ret < 0) {
 867                 wl1271_warning("illegal value in rx_streaming_write!");
 868                 return -EINVAL;
 869         }
 870
 871         /* valid values: 0, 10-100 */
 872         if (!(value == 0 || value == 1)) {
 873                 wl1271_warning("value is not in valid!");
 874                 return -EINVAL;
 875         }
 876
 877         mutex_lock(&wl->mutex);
 878
 879         wl->conf.rx_streaming.always = value;
 880
 881         ret = wl1271_ps_elp_wakeup(wl);
 882         if (ret < 0)
 883                 goto out;
 884
 885         wl12xx_for_each_wlvif_sta(wl, wlvif) {
 886                 wl1271_recalc_rx_streaming(wl, wlvif);
 887         }
 888
 889         wl1271_ps_elp_sleep(wl);
 890 out:
 891         mutex_unlock(&wl->mutex);
 892         return count;
 893 }
 894
 895 static ssize_t rx_streaming_always_read(struct file *file,
 896                             char __user *userbuf,
 897                             size_t count, loff_t *ppos)
 898 {
 899         struct wl1271 *wl = file->private_data;
 900         return wl1271_format_buffer(userbuf, count, ppos,
 901                                     "%d\n", wl->conf.rx_streaming.always);
 902 }
 903
 904 static const struct file_operations rx_streaming_always_ops = {
 905         .read = rx_streaming_always_read,
 906         .write = rx_streaming_always_write,
 907         .open = simple_open,
 908         .llseek = default_llseek,
 909 };
 910
 911 static ssize_t beacon_filtering_write(struct file *file,
 912                                       const char __user *user_buf,
 913                                       size_t count, loff_t *ppos)
 914 {
 915         struct wl1271 *wl = file->private_data;
 916         struct wl12xx_vif *wlvif;
 917         char buf[10];
 918         size_t len;
 919         unsigned long value;
 920         int ret;
 921
 922         len = min(count, sizeof(buf) - 1);
 923         if (copy_from_user(buf, user_buf, len))
 924                 return -EFAULT;
 925         buf[len] = '\0';
 926
 927         ret = kstrtoul(buf, 0, &value);
 928         if (ret < 0) {
 929                 wl1271_warning("illegal value for beacon_filtering!");
 930                 return -EINVAL;
 931         }
 932
 933         mutex_lock(&wl->mutex);
 934
 935         ret = wl1271_ps_elp_wakeup(wl);
 936         if (ret < 0)
 937                 goto out;
 938
 939         wl12xx_for_each_wlvif(wl, wlvif) {
 940                 ret = wl1271_acx_beacon_filter_opt(wl, wlvif, !!value);
 941         }
 942
 943         wl1271_ps_elp_sleep(wl);
 944 out:
 945         mutex_unlock(&wl->mutex);
 946         return count;
 947 }
 948
 949 static const struct file_operations beacon_filtering_ops = {
 950         .write = beacon_filtering_write,
 951         .open = simple_open,
 952         .llseek = default_llseek,
 953 };
 954
 955 static ssize_t fw_stats_raw_read(struct file *file,
 956                                  char __user *userbuf,
 957                                  size_t count, loff_t *ppos)
 958 {
 959         struct wl1271 *wl = file->private_data;
 960
 961         wl1271_debugfs_update_stats(wl);
 962
 963         return simple_read_from_buffer(userbuf, count, ppos,
 964                                        wl->stats.fw_stats,
 965                                        wl->stats.fw_stats_len);
 966 }
 967
 968 static const struct file_operations fw_stats_raw_ops = {
 969         .read = fw_stats_raw_read,
 970         .open = simple_open,
 971         .llseek = default_llseek,
 972 };
 973
 974 static ssize_t sleep_auth_read(struct file *file, char __user *user_buf,
 975                                size_t count, loff_t *ppos)
 976 {
 977         struct wl1271 *wl = file->private_data;
 978
 979         return wl1271_format_buffer(user_buf, count,
 980                                     ppos, "%d\n",
 981                                     wl->sleep_auth);
 982 }
 983
 984 static ssize_t sleep_auth_write(struct file *file,
 985                                 const char __user *user_buf,
 986                                 size_t count, loff_t *ppos)
 987 {
 988         struct wl1271 *wl = file->private_data;
 989         unsigned long value;
 990         int ret;
 991
 992         ret = kstrtoul_from_user(user_buf, count, 0, &value);
 993         if (ret < 0) {
 994                 wl1271_warning("illegal value in sleep_auth");
 995                 return -EINVAL;
 996         }
 997
 998         if (value > WL1271_PSM_MAX) {
 999                 wl1271_warning("sleep_auth must be between 0 and %d",
1000                                WL1271_PSM_MAX);
1001                 return -ERANGE;
1002         }
1003
1004         mutex_lock(&wl->mutex);
1005
1006         wl->conf.conn.sta_sleep_auth = value;
1007
1008         if (unlikely(wl->state != WLCORE_STATE_ON)) {
1009                 /* this will show up on "read" in case we are off */
1010                 wl->sleep_auth = value;
1011                 goto out;
1012         }
1013
1014         ret = wl1271_ps_elp_wakeup(wl);
1015         if (ret < 0)
1016                 goto out;
1017
1018         ret = wl1271_acx_sleep_auth(wl, value);
1019         if (ret < 0)
1020                 goto out_sleep;
1021
1022 out_sleep:
1023         wl1271_ps_elp_sleep(wl);
1024 out:
1025         mutex_unlock(&wl->mutex);
1026         return count;
1027 }
1028
1029 static const struct file_operations sleep_auth_ops = {
1030         .read = sleep_auth_read,
1031         .write = sleep_auth_write,
1032         .open = simple_open,
1033         .llseek = default_llseek,
1034 };
1035
1036 static ssize_t dev_mem_read(struct file *file,
1037              char __user *user_buf, size_t count,
1038              loff_t *ppos)
1039 {
1040         struct wl1271 *wl = file->private_data;
1041         struct wlcore_partition_set part, old_part;
1042         size_t bytes = count;
1043         int ret;
1044         char *buf;
1045
1046         /* only requests of dword-aligned size and offset are supported */
1047         if (bytes % 4)
1048                 return -EINVAL;
1049
1050         if (*ppos % 4)
1051                 return -EINVAL;
1052
1053         /* function should return in reasonable time */
1054         bytes = min(bytes, WLCORE_MAX_BLOCK_SIZE);
1055
1056         if (bytes == 0)
1057                 return -EINVAL;
1058
1059         memset(&part, 0, sizeof(part));
1060         part.mem.start = file->f_pos;
1061         part.mem.size = bytes;
1062
1063         buf = kmalloc(bytes, GFP_KERNEL);
1064         if (!buf)
1065                 return -ENOMEM;
1066
1067         mutex_lock(&wl->mutex);
1068
1069         if (unlikely(wl->state == WLCORE_STATE_OFF)) {
1070                 ret = -EFAULT;
1071                 goto skip_read;
1072         }
1073
1074         /*
1075          * Don't fail if elp_wakeup returns an error, so the device's memory
1076          * could be read even if the FW crashed
1077          */
1078         wl1271_ps_elp_wakeup(wl);
1079
1080         /* store current partition and switch partition */
1081         memcpy(&old_part, &wl->curr_part, sizeof(old_part));
1082         ret = wlcore_set_partition(wl, &part);
1083         if (ret < 0)
1084                 goto part_err;
1085
1086         ret = wlcore_raw_read(wl, 0, buf, bytes, false);
1087         if (ret < 0)
1088                 goto read_err;
1089
1090 read_err:
1091         /* recover partition */
1092         ret = wlcore_set_partition(wl, &old_part);
1093         if (ret < 0)
1094                 goto part_err;
1095
1096 part_err:
1097         wl1271_ps_elp_sleep(wl);
1098
1099 skip_read:
1100         mutex_unlock(&wl->mutex);
1101
1102         if (ret == 0) {
1103                 ret = copy_to_user(user_buf, buf, bytes);
1104                 if (ret < bytes) {
1105                         bytes -= ret;
1106                         *ppos += bytes;
1107                         ret = 0;
1108                 } else {
1109                         ret = -EFAULT;
1110                 }
1111         }
1112
1113         kfree(buf);
1114
1115         return ((ret == 0) ? bytes : ret);
1116 }
1117
1118 static ssize_t dev_mem_write(struct file *file, const char __user *user_buf,
1119                 size_t count, loff_t *ppos)
1120 {
1121         struct wl1271 *wl = file->private_data;
1122         struct wlcore_partition_set part, old_part;
1123         size_t bytes = count;
1124         int ret;
1125         char *buf;
1126
1127         /* only requests of dword-aligned size and offset are supported */
1128         if (bytes % 4)
1129                 return -EINVAL;
1130
1131         if (*ppos % 4)
1132                 return -EINVAL;
1133
1134         /* function should return in reasonable time */
1135         bytes = min(bytes, WLCORE_MAX_BLOCK_SIZE);
1136
1137         if (bytes == 0)
1138                 return -EINVAL;
1139
1140         memset(&part, 0, sizeof(part));
1141         part.mem.start = file->f_pos;
1142         part.mem.size = bytes;
1143
1144         buf = kmalloc(bytes, GFP_KERNEL);
1145         if (!buf)
1146                 return -ENOMEM;
1147
1148         ret = copy_from_user(buf, user_buf, bytes);
1149         if (ret) {
1150                 ret = -EFAULT;
1151                 goto err_out;
1152         }
1153
1154         mutex_lock(&wl->mutex);
1155
1156         if (unlikely(wl->state == WLCORE_STATE_OFF)) {
1157                 ret = -EFAULT;
1158                 goto skip_write;
1159         }
1160
1161         /*
1162          * Don't fail if elp_wakeup returns an error, so the device's memory
1163          * could be read even if the FW crashed
1164          */
1165         wl1271_ps_elp_wakeup(wl);
1166
1167         /* store current partition and switch partition */
1168         memcpy(&old_part, &wl->curr_part, sizeof(old_part));
1169         ret = wlcore_set_partition(wl, &part);
1170         if (ret < 0)
1171                 goto part_err;
1172
1173         ret = wlcore_raw_write(wl, 0, buf, bytes, false);
1174         if (ret < 0)
1175                 goto write_err;
1176
1177 write_err:
1178         /* recover partition */
1179         ret = wlcore_set_partition(wl, &old_part);
1180         if (ret < 0)
1181                 goto part_err;
1182
1183 part_err:
1184         wl1271_ps_elp_sleep(wl);
1185
1186 skip_write:
1187         mutex_unlock(&wl->mutex);
1188
1189         if (ret == 0)
1190                 *ppos += bytes;
1191
1192 err_out:
1193         kfree(buf);
1194
1195         return ((ret == 0) ? bytes : ret);
1196 }
1197
1198 static loff_t dev_mem_seek(struct file *file, loff_t offset, int orig)
1199 {
1200         loff_t ret;
1201
1202         /* only requests of dword-aligned size and offset are supported */
1203         if (offset % 4)
1204                 return -EINVAL;
1205
1206         switch (orig) {
1207         case SEEK_SET:
1208                 file->f_pos = offset;
1209                 ret = file->f_pos;
1210                 break;
1211         case SEEK_CUR:
1212                 file->f_pos += offset;
1213                 ret = file->f_pos;
1214                 break;
1215         default:
1216                 ret = -EINVAL;
1217         }
1218
1219         return ret;
1220 }
1221
1222 static const struct file_operations dev_mem_ops = {
1223         .open = simple_open,
1224         .read = dev_mem_read,
1225         .write = dev_mem_write,
1226         .llseek = dev_mem_seek,
1227 };
1228
1229 static int wl1271_debugfs_add_files(struct wl1271 *wl,
1230                                     struct dentry *rootdir)
1231 {
1232         int ret = 0;
1233         struct dentry *entry, *streaming;
1234
1235         DEBUGFS_ADD(tx_queue_len, rootdir);
1236         DEBUGFS_ADD(retry_count, rootdir);
1237         DEBUGFS_ADD(excessive_retries, rootdir);
1238
1239         DEBUGFS_ADD(gpio_power, rootdir);
1240         DEBUGFS_ADD(start_recovery, rootdir);
1241         DEBUGFS_ADD(driver_state, rootdir);
1242         DEBUGFS_ADD(vifs_state, rootdir);
1243         DEBUGFS_ADD(dtim_interval, rootdir);
1244         DEBUGFS_ADD(suspend_dtim_interval, rootdir);
1245         DEBUGFS_ADD(beacon_interval, rootdir);
1246         DEBUGFS_ADD(beacon_filtering, rootdir);
1247         DEBUGFS_ADD(dynamic_ps_timeout, rootdir);
1248         DEBUGFS_ADD(forced_ps, rootdir);
1249         DEBUGFS_ADD(split_scan_timeout, rootdir);
1250         DEBUGFS_ADD(irq_pkt_threshold, rootdir);
1251         DEBUGFS_ADD(irq_blk_threshold, rootdir);
1252         DEBUGFS_ADD(irq_timeout, rootdir);
1253         DEBUGFS_ADD(fw_stats_raw, rootdir);
1254         DEBUGFS_ADD(sleep_auth, rootdir);
1255
1256         streaming = debugfs_create_dir("rx_streaming", rootdir);
1257         if (!streaming || IS_ERR(streaming))
1258                 goto err;
1259
1260         DEBUGFS_ADD_PREFIX(rx_streaming, interval, streaming);
1261         DEBUGFS_ADD_PREFIX(rx_streaming, always, streaming);
1262
1263         DEBUGFS_ADD_PREFIX(dev, mem, rootdir);
1264
1265         return 0;
1266
1267 err:
1268         if (IS_ERR(entry))
1269                 ret = PTR_ERR(entry);
1270         else
1271                 ret = -ENOMEM;
1272
1273         return ret;
1274 }
1275
1276 void wl1271_debugfs_reset(struct wl1271 *wl)
1277 {
1278         if (!wl->stats.fw_stats)
1279                 return;
1280
1281         memset(wl->stats.fw_stats, 0, wl->stats.fw_stats_len);
1282         wl->stats.retry_count = 0;
1283         wl->stats.excessive_retries = 0;
1284 }
1285
1286 int wl1271_debugfs_init(struct wl1271 *wl)
1287 {
1288         int ret;
1289         struct dentry *rootdir;
1290
1291         rootdir = debugfs_create_dir(KBUILD_MODNAME,
1292                                      wl->hw->wiphy->debugfsdir);
1293
1294         if (IS_ERR(rootdir)) {
1295                 ret = PTR_ERR(rootdir);
1296                 goto out;
1297         }
1298
1299         wl->stats.fw_stats = kzalloc(wl->stats.fw_stats_len, GFP_KERNEL);
1300         if (!wl->stats.fw_stats) {
1301                 ret = -ENOMEM;
1302                 goto out_remove;
1303         }
1304
1305         wl->stats.fw_stats_update = jiffies;
1306
1307         ret = wl1271_debugfs_add_files(wl, rootdir);
1308         if (ret < 0)
1309                 goto out_exit;
1310
1311         ret = wlcore_debugfs_init(wl, rootdir);
1312         if (ret < 0)
1313                 goto out_exit;
1314
1315         goto out;
1316
1317 out_exit:
1318         wl1271_debugfs_exit(wl);
1319
1320 out_remove:
1321         debugfs_remove_recursive(rootdir);
1322
1323 out:
1324         return ret;
1325 }
1326
1327 void wl1271_debugfs_exit(struct wl1271 *wl)
1328 {
1329         kfree(wl->stats.fw_stats);
1330         wl->stats.fw_stats = NULL;
1331 }