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