Quelle  debugfs.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0-only
/******************************************************************************
 *
 * Copyright(c) 2008 - 2014 Intel Corporation. All rights reserved.
 * Copyright (C) 2018, 2025 Intel Corporation
 *****************************************************************************/

#include <linux/slab.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/debugfs.h>
#include <linux/ieee80211.h>
#include <net/mac80211.h>

#include "iwl-debug.h"
#include "iwl-trans.h"
#include "iwl-io.h"
#include "dev.h"
#include "agn.h"

/* create and remove of files */
#define DEBUGFS_ADD_FILE(name, parent, mode) do {   \
 debugfs_create_file(#name, mode, parent, priv,   \
       &iwl_dbgfs_##name##_ops);   \
} while (0)

/* file operation */
#define DEBUGFS_READ_FILE_OPS(name)                                     \
static const struct file_operations iwl_dbgfs_##name##_ops = {          \
 .read = iwl_dbgfs_##name##_read,    \
 .open = simple_open,      \
 .llseek = generic_file_llseek,     \
};

#define DEBUGFS_WRITE_FILE_OPS(name)                                    \
static const struct file_operations iwl_dbgfs_##name##_ops = {          \
 .write = iwl_dbgfs_##name##_write,                              \
 .open = simple_open,      \
 .llseek = generic_file_llseek,     \
};


#define DEBUGFS_READ_WRITE_FILE_OPS(name)                               \
static const struct file_operations iwl_dbgfs_##name##_ops = {          \
 .write = iwl_dbgfs_##name##_write,                              \
 .read = iwl_dbgfs_##name##_read,                                \
 .open = simple_open,      \
 .llseek = generic_file_llseek,     \
};

static ssize_t iwl_dbgfs_sram_read(struct file *file,
     char __user *user_buf,
     size_t count, loff_t *ppos)
{
 u32 val = 0;
 char *buf;
 ssize_t ret;
 int i = 0;
 bool device_format = false;
 int offset = 0;
 int len = 0;
 int pos = 0;
 int sram;
 struct iwl_priv *priv = file->private_data;
 const struct fw_img *img;
 size_t bufsz;

 if (!iwl_is_ready_rf(priv))
  return -EAGAIN;

 /* default is to dump the entire data segment */
 if (!priv->dbgfs_sram_offset && !priv->dbgfs_sram_len) {
  priv->dbgfs_sram_offset = 0x800000;
  if (!priv->ucode_loaded)
   return -EINVAL;
  img = &priv->fw->img[priv->cur_ucode];
  priv->dbgfs_sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
 }
 len = priv->dbgfs_sram_len;

 if (len == -4) {
  device_format = true;
  len = 4;
 }

 bufsz =  50 + len * 4;
 buf = kmalloc(bufsz, GFP_KERNEL);
 if (!buf)
  return -ENOMEM;

 pos += scnprintf(buf + pos, bufsz - pos, "sram_len: 0x%x\n",
    len);
 pos += scnprintf(buf + pos, bufsz - pos, "sram_offset: 0x%x\n",
   priv->dbgfs_sram_offset);

 /* adjust sram address since reads are only on even u32 boundaries */
 offset = priv->dbgfs_sram_offset & 0x3;
 sram = priv->dbgfs_sram_offset & ~0x3;

 /* read the first u32 from sram */
 val = iwl_trans_read_mem32(priv->trans, sram);

 for (; len; len--) {
  /* put the address at the start of every line */
  if (i == 0)
   pos += scnprintf(buf + pos, bufsz - pos,
    "%08X: ", sram + offset);

  if (device_format)
   pos += scnprintf(buf + pos, bufsz - pos,
    "%02x", (val >> (8 * (3 - offset))) & 0xff);
  else
   pos += scnprintf(buf + pos, bufsz - pos,
    "%02x ", (val >> (8 * offset)) & 0xff);

  /* if all bytes processed, read the next u32 from sram */
  if (++offset == 4) {
   sram += 4;
   offset = 0;
   val = iwl_trans_read_mem32(priv->trans, sram);
  }

  /* put in extra spaces and split lines for human readability */
  if (++i == 16) {
   i = 0;
   pos += scnprintf(buf + pos, bufsz - pos, "\n");
  } else if (!(i & 7)) {
   pos += scnprintf(buf + pos, bufsz - pos, " ");
  } else if (!(i & 3)) {
   pos += scnprintf(buf + pos, bufsz - pos, " ");
  }
 }
 if (i)
  pos += scnprintf(buf + pos, bufsz - pos, "\n");

 ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 kfree(buf);
 return ret;
}

static ssize_t iwl_dbgfs_sram_write(struct file *file,
     const char __user *user_buf,
     size_t count, loff_t *ppos)
{
 struct iwl_priv *priv = file->private_data;
 char buf[64];
 int buf_size;
 u32 offset, len;

 memset(buf, 0, sizeof(buf));
 buf_size = min(count, sizeof(buf) -  1);
 if (copy_from_user(buf, user_buf, buf_size))
  return -EFAULT;

 if (sscanf(buf, "%x,%x", &offset, &len) == 2) {
  priv->dbgfs_sram_offset = offset;
  priv->dbgfs_sram_len = len;
 } else if (sscanf(buf, "%x", &offset) == 1) {
  priv->dbgfs_sram_offset = offset;
  priv->dbgfs_sram_len = -4;
 } else {
  priv->dbgfs_sram_offset = 0;
  priv->dbgfs_sram_len = 0;
 }

 return count;
}

static ssize_t iwl_dbgfs_wowlan_sram_read(struct file *file,
       char __user *user_buf,
       size_t count, loff_t *ppos)
{
 struct iwl_priv *priv = file->private_data;
 const struct fw_img *img = &priv->fw->img[IWL_UCODE_WOWLAN];

 if (!priv->wowlan_sram)
  return -ENODATA;

 return simple_read_from_buffer(user_buf, count, ppos,
           priv->wowlan_sram,
           img->sec[IWL_UCODE_SECTION_DATA].len);
}
static ssize_t iwl_dbgfs_stations_read(struct file *file, char __user *user_buf,
     size_t count, loff_t *ppos)
{
 struct iwl_priv *priv = file->private_data;
 struct iwl_station_entry *station;
 struct iwl_tid_data *tid_data;
 char *buf;
 int i, j, pos = 0;
 ssize_t ret;
 /* Add 30 for initial string */
 const size_t bufsz = 30 + sizeof(char) * 500 * (priv->num_stations);

 buf = kmalloc(bufsz, GFP_KERNEL);
 if (!buf)
  return -ENOMEM;

 pos += scnprintf(buf + pos, bufsz - pos, "num of stations: %d\n\n",
   priv->num_stations);

 for (i = 0; i < IWLAGN_STATION_COUNT; i++) {
  station = &priv->stations[i];
  if (!station->used)
   continue;
  pos += scnprintf(buf + pos, bufsz - pos,
     "station %d - addr: %pM, flags: %#x\n",
     i, station->sta.sta.addr,
     station->sta.station_flags_msk);
  pos += scnprintf(buf + pos, bufsz - pos,
    "TID seqno next_rclmd "
    "rate_n_flags state txq\n");

  for (j = 0; j < IWL_MAX_TID_COUNT; j++) {
   tid_data = &priv->tid_data[i][j];
   pos += scnprintf(buf + pos, bufsz - pos,
    "%d: 0x%.4x 0x%.4x 0x%.8x "
    "%d %.2d",
    j, tid_data->seq_number,
    tid_data->next_reclaimed,
    tid_data->agg.rate_n_flags,
    tid_data->agg.state,
    tid_data->agg.txq_id);

   if (tid_data->agg.wait_for_ba)
    pos += scnprintf(buf + pos, bufsz - pos,
       " - waitforba");
   pos += scnprintf(buf + pos, bufsz - pos, "\n");
  }

  pos += scnprintf(buf + pos, bufsz - pos, "\n");
 }

 ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 kfree(buf);
 return ret;
}

static ssize_t iwl_dbgfs_nvm_read(struct file *file,
           char __user *user_buf,
           size_t count,
           loff_t *ppos)
{
 ssize_t ret;
 struct iwl_priv *priv = file->private_data;
 int pos = 0, ofs = 0, buf_size = 0;
 const u8 *ptr;
 char *buf;
 u16 nvm_ver;
 size_t eeprom_len = priv->eeprom_blob_size;
 buf_size = 4 * eeprom_len + 256;

 if (eeprom_len % 16)
  return -ENODATA;

 ptr = priv->eeprom_blob;
 if (!ptr)
  return -ENOMEM;

 /* 4 characters for byte 0xYY */
 buf = kzalloc(buf_size, GFP_KERNEL);
 if (!buf)
  return -ENOMEM;

 nvm_ver = priv->nvm_data->nvm_version;
 pos += scnprintf(buf + pos, buf_size - pos,
    "NVM version: 0x%x\n", nvm_ver);
 for (ofs = 0 ; ofs < eeprom_len ; ofs += 16) {
  pos += scnprintf(buf + pos, buf_size - pos, "0x%.4x %16ph\n",
     ofs, ptr + ofs);
 }

 ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 kfree(buf);
 return ret;
}

static ssize_t iwl_dbgfs_channels_read(struct file *file, char __user *user_buf,
           size_t count, loff_t *ppos)
{
 struct iwl_priv *priv = file->private_data;
 struct ieee80211_channel *channels = NULL;
 const struct ieee80211_supported_band *supp_band = NULL;
 int pos = 0, i, bufsz = PAGE_SIZE;
 char *buf;
 ssize_t ret;

 buf = kzalloc(bufsz, GFP_KERNEL);
 if (!buf)
  return -ENOMEM;

 supp_band = iwl_get_hw_mode(priv, NL80211_BAND_2GHZ);
 if (supp_band) {
  channels = supp_band->channels;

  pos += scnprintf(buf + pos, bufsz - pos,
    "Displaying %d channels in 2.4GHz band 802.11bg):\n",
    supp_band->n_channels);

  for (i = 0; i < supp_band->n_channels; i++)
   pos += scnprintf(buf + pos, bufsz - pos,
     "%d: %ddBm: BSS%s%s, %s.\n",
     channels[i].hw_value,
     channels[i].max_power,
     channels[i].flags & IEEE80211_CHAN_RADAR ?
     " (IEEE 802.11h required)" : "",
     ((channels[i].flags & IEEE80211_CHAN_NO_IR)
     || (channels[i].flags &
     IEEE80211_CHAN_RADAR)) ? "" :
     ", IBSS",
     channels[i].flags &
     IEEE80211_CHAN_NO_IR ?
     "passive only" : "active/passive");
 }
 supp_band = iwl_get_hw_mode(priv, NL80211_BAND_5GHZ);
 if (supp_band) {
  channels = supp_band->channels;

  pos += scnprintf(buf + pos, bufsz - pos,
    "Displaying %d channels in 5.2GHz band (802.11a)\n",
    supp_band->n_channels);

  for (i = 0; i < supp_band->n_channels; i++)
   pos += scnprintf(buf + pos, bufsz - pos,
     "%d: %ddBm: BSS%s%s, %s.\n",
     channels[i].hw_value,
     channels[i].max_power,
     channels[i].flags & IEEE80211_CHAN_RADAR ?
     " (IEEE 802.11h required)" : "",
     ((channels[i].flags & IEEE80211_CHAN_NO_IR)
     || (channels[i].flags &
     IEEE80211_CHAN_RADAR)) ? "" :
     ", IBSS",
     channels[i].flags &
     IEEE80211_CHAN_NO_IR ?
     "passive only" : "active/passive");
 }
 ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 kfree(buf);
 return ret;
}

static ssize_t iwl_dbgfs_status_read(struct file *file,
      char __user *user_buf,
      size_t count, loff_t *ppos) {

 struct iwl_priv *priv = file->private_data;
 char buf[512];
 int pos = 0;
 const size_t bufsz = sizeof(buf);

 pos += scnprintf(buf + pos, bufsz - pos, "STATUS_RF_KILL_HW:\t %d\n",
  test_bit(STATUS_RF_KILL_HW, &priv->status));
 pos += scnprintf(buf + pos, bufsz - pos, "STATUS_CT_KILL:\t\t %d\n",
  test_bit(STATUS_CT_KILL, &priv->status));
 pos += scnprintf(buf + pos, bufsz - pos, "STATUS_ALIVE:\t\t %d\n",
  test_bit(STATUS_ALIVE, &priv->status));
 pos += scnprintf(buf + pos, bufsz - pos, "STATUS_READY:\t\t %d\n",
  test_bit(STATUS_READY, &priv->status));
 pos += scnprintf(buf + pos, bufsz - pos, "STATUS_EXIT_PENDING:\t %d\n",
  test_bit(STATUS_EXIT_PENDING, &priv->status));
 pos += scnprintf(buf + pos, bufsz - pos, "STATUS_STATISTICS:\t %d\n",
  test_bit(STATUS_STATISTICS, &priv->status));
 pos += scnprintf(buf + pos, bufsz - pos, "STATUS_SCANNING:\t %d\n",
  test_bit(STATUS_SCANNING, &priv->status));
 pos += scnprintf(buf + pos, bufsz - pos, "STATUS_SCAN_ABORTING:\t %d\n",
  test_bit(STATUS_SCAN_ABORTING, &priv->status));
 pos += scnprintf(buf + pos, bufsz - pos, "STATUS_SCAN_HW:\t\t %d\n",
  test_bit(STATUS_SCAN_HW, &priv->status));
 pos += scnprintf(buf + pos, bufsz - pos, "STATUS_POWER_PMI:\t %d\n",
  test_bit(STATUS_POWER_PMI, &priv->status));
 pos += scnprintf(buf + pos, bufsz - pos, "STATUS_FW_ERROR:\t %d\n",
  test_bit(STATUS_FW_ERROR, &priv->status));
 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
}

static ssize_t iwl_dbgfs_rx_handlers_read(struct file *file,
     char __user *user_buf,
     size_t count, loff_t *ppos) {

 struct iwl_priv *priv = file->private_data;

 int pos = 0;
 int cnt = 0;
 char *buf;
 int bufsz = 24 * 64; /* 24 items * 64 char per item */
 ssize_t ret;

 buf = kzalloc(bufsz, GFP_KERNEL);
 if (!buf)
  return -ENOMEM;

 for (cnt = 0; cnt < REPLY_MAX; cnt++) {
  if (priv->rx_handlers_stats[cnt] > 0)
   pos += scnprintf(buf + pos, bufsz - pos,
    "\tRx handler[%36s]:\t\t %u\n",
    iwl_get_cmd_string(priv->trans, (u32)cnt),
    priv->rx_handlers_stats[cnt]);
 }

 ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 kfree(buf);
 return ret;
}

static ssize_t iwl_dbgfs_rx_handlers_write(struct file *file,
      const char __user *user_buf,
      size_t count, loff_t *ppos)
{
 struct iwl_priv *priv = file->private_data;

 char buf[8];
 int buf_size;
 u32 reset_flag;

 memset(buf, 0, sizeof(buf));
 buf_size = min(count, sizeof(buf) -  1);
 if (copy_from_user(buf, user_buf, buf_size))
  return -EFAULT;
 if (sscanf(buf, "%x", &reset_flag) != 1)
  return -EFAULT;
 if (reset_flag == 0)
  memset(&priv->rx_handlers_stats[0], 0,
   sizeof(priv->rx_handlers_stats));

 return count;
}

static ssize_t iwl_dbgfs_qos_read(struct file *file, char __user *user_buf,
           size_t count, loff_t *ppos)
{
 struct iwl_priv *priv = file->private_data;
 struct iwl_rxon_context *ctx;
 int pos = 0, i;
 char buf[256 * NUM_IWL_RXON_CTX];
 const size_t bufsz = sizeof(buf);

 for_each_context(priv, ctx) {
  pos += scnprintf(buf + pos, bufsz - pos, "context %d:\n",
     ctx->ctxid);
  for (i = 0; i < AC_NUM; i++) {
   pos += scnprintf(buf + pos, bufsz - pos,
    "\tcw_min\tcw_max\taifsn\ttxop\n");
   pos += scnprintf(buf + pos, bufsz - pos,
    "AC[%d]\t%u\t%u\t%u\t%u\n", i,
    ctx->qos_data.def_qos_parm.ac[i].cw_min,
    ctx->qos_data.def_qos_parm.ac[i].cw_max,
    ctx->qos_data.def_qos_parm.ac[i].aifsn,
    ctx->qos_data.def_qos_parm.ac[i].edca_txop);
  }
  pos += scnprintf(buf + pos, bufsz - pos, "\n");
 }
 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
}

static ssize_t iwl_dbgfs_thermal_throttling_read(struct file *file,
    char __user *user_buf,
    size_t count, loff_t *ppos)
{
 struct iwl_priv *priv = file->private_data;
 struct iwl_tt_mgmt *tt = &priv->thermal_throttle;
 struct iwl_tt_restriction *restriction;
 char buf[100];
 int pos = 0;
 const size_t bufsz = sizeof(buf);

 pos += scnprintf(buf + pos, bufsz - pos,
   "Thermal Throttling Mode: %s\n",
   tt->advanced_tt ? "Advance" : "Legacy");
 pos += scnprintf(buf + pos, bufsz - pos,
   "Thermal Throttling State: %d\n",
   tt->state);
 if (tt->advanced_tt) {
  restriction = tt->restriction + tt->state;
  pos += scnprintf(buf + pos, bufsz - pos,
    "Tx mode: %d\n",
    restriction->tx_stream);
  pos += scnprintf(buf + pos, bufsz - pos,
    "Rx mode: %d\n",
    restriction->rx_stream);
  pos += scnprintf(buf + pos, bufsz - pos,
    "HT mode: %d\n",
    restriction->is_ht);
 }
 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
}

static ssize_t iwl_dbgfs_disable_ht40_write(struct file *file,
      const char __user *user_buf,
      size_t count, loff_t *ppos)
{
 struct iwl_priv *priv = file->private_data;
 char buf[8];
 int buf_size;
 int ht40;

 memset(buf, 0, sizeof(buf));
 buf_size = min(count, sizeof(buf) -  1);
 if (copy_from_user(buf, user_buf, buf_size))
  return -EFAULT;
 if (sscanf(buf, "%d", &ht40) != 1)
  return -EFAULT;
 if (!iwl_is_any_associated(priv))
  priv->disable_ht40 = ht40 ? true : false;
 else
  return -EINVAL;

 return count;
}

static ssize_t iwl_dbgfs_disable_ht40_read(struct file *file,
      char __user *user_buf,
      size_t count, loff_t *ppos)
{
 struct iwl_priv *priv = file->private_data;
 char buf[100];
 int pos = 0;
 const size_t bufsz = sizeof(buf);

 pos += scnprintf(buf + pos, bufsz - pos,
   "11n 40MHz Mode: %s\n",
   priv->disable_ht40 ? "Disabled" : "Enabled");
 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
}

static ssize_t iwl_dbgfs_temperature_read(struct file *file,
      char __user *user_buf,
      size_t count, loff_t *ppos)
{
 struct iwl_priv *priv = file->private_data;
 char buf[8];
 int pos = 0;
 const size_t bufsz = sizeof(buf);

 pos += scnprintf(buf + pos, bufsz - pos, "%d\n", priv->temperature);
 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
}


static ssize_t iwl_dbgfs_sleep_level_override_write(struct file *file,
          const char __user *user_buf,
          size_t count, loff_t *ppos)
{
 struct iwl_priv *priv = file->private_data;
 char buf[8];
 int buf_size;
 int value;

 memset(buf, 0, sizeof(buf));
 buf_size = min(count, sizeof(buf) -  1);
 if (copy_from_user(buf, user_buf, buf_size))
  return -EFAULT;

 if (sscanf(buf, "%d", &value) != 1)
  return -EINVAL;

 /*
 * Our users expect 0 to be "CAM", but 0 isn't actually
 * valid here. However, let's not confuse them and present
 * IWL_POWER_INDEX_1 as "1", not "0".
 */
 if (value == 0)
  return -EINVAL;
 else if (value > 0)
  value -= 1;

 if (value != -1 && (value < 0 || value >= IWL_POWER_NUM))
  return -EINVAL;

 if (!iwl_is_ready_rf(priv))
  return -EAGAIN;

 priv->power_data.debug_sleep_level_override = value;

 mutex_lock(&priv->mutex);
 iwl_power_update_mode(priv, true);
 mutex_unlock(&priv->mutex);

 return count;
}

static ssize_t iwl_dbgfs_sleep_level_override_read(struct file *file,
         char __user *user_buf,
         size_t count, loff_t *ppos)
{
 struct iwl_priv *priv = file->private_data;
 char buf[10];
 int pos, value;
 const size_t bufsz = sizeof(buf);

 /* see the write function */
 value = priv->power_data.debug_sleep_level_override;
 if (value >= 0)
  value += 1;

 pos = scnprintf(buf, bufsz, "%d\n", value);
 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
}

static ssize_t iwl_dbgfs_current_sleep_command_read(struct file *file,
          char __user *user_buf,
          size_t count, loff_t *ppos)
{
 struct iwl_priv *priv = file->private_data;
 char buf[200];
 int pos = 0, i;
 const size_t bufsz = sizeof(buf);
 struct iwl_powertable_cmd *cmd = &priv->power_data.sleep_cmd;

 pos += scnprintf(buf + pos, bufsz - pos,
    "flags: %#.2x\n", le16_to_cpu(cmd->flags));
 pos += scnprintf(buf + pos, bufsz - pos,
    "RX/TX timeout: %d/%d usec\n",
    le32_to_cpu(cmd->rx_data_timeout),
    le32_to_cpu(cmd->tx_data_timeout));
 for (i = 0; i < IWL_POWER_VEC_SIZE; i++)
  pos += scnprintf(buf + pos, bufsz - pos,
     "sleep_interval[%d]: %d\n", i,
     le32_to_cpu(cmd->sleep_interval[i]));

 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
}

DEBUGFS_READ_WRITE_FILE_OPS(sram);
DEBUGFS_READ_FILE_OPS(wowlan_sram);
DEBUGFS_READ_FILE_OPS(nvm);
DEBUGFS_READ_FILE_OPS(stations);
DEBUGFS_READ_FILE_OPS(channels);
DEBUGFS_READ_FILE_OPS(status);
DEBUGFS_READ_WRITE_FILE_OPS(rx_handlers);
DEBUGFS_READ_FILE_OPS(qos);
DEBUGFS_READ_FILE_OPS(thermal_throttling);
DEBUGFS_READ_WRITE_FILE_OPS(disable_ht40);
DEBUGFS_READ_FILE_OPS(temperature);
DEBUGFS_READ_WRITE_FILE_OPS(sleep_level_override);
DEBUGFS_READ_FILE_OPS(current_sleep_command);

#define fmt_value " %-30s %10u\n"
#define fmt_hex  " %-30s 0x%02X\n"
#define fmt_table " %-30s %10u %10u %10u %10u\n"
#define fmt_header "%-32s current cumulative delta max\n"

static int iwl_statistics_flag(struct iwl_priv *priv, char *buf, int bufsz)
{
 int p = 0;
 u32 flag;

 lockdep_assert_held(&priv->statistics.lock);

 flag = le32_to_cpu(priv->statistics.flag);

 p += scnprintf(buf + p, bufsz - p, "Statistics Flag(0x%X):\n", flag);
 if (flag & UCODE_STATISTICS_CLEAR_MSK)
  p += scnprintf(buf + p, bufsz - p,
  "\tStatistics have been cleared\n");
 p += scnprintf(buf + p, bufsz - p, "\tOperational Frequency: %s\n",
  (flag & UCODE_STATISTICS_FREQUENCY_MSK)
  ? "2.4 GHz" : "5.2 GHz");
 p += scnprintf(buf + p, bufsz - p, "\tTGj Narrow Band: %s\n",
  (flag & UCODE_STATISTICS_NARROW_BAND_MSK)
   ? "enabled" : "disabled");

 return p;
}

static ssize_t iwl_dbgfs_ucode_rx_stats_read(struct file *file,
     char __user *user_buf,
     size_t count, loff_t *ppos)
{
 struct iwl_priv *priv = file->private_data;
 int pos = 0;
 char *buf;
 int bufsz = sizeof(struct statistics_rx_phy) * 40 +
      sizeof(struct statistics_rx_non_phy) * 40 +
      sizeof(struct statistics_rx_ht_phy) * 40 + 400;
 ssize_t ret;
 struct statistics_rx_phy *ofdm, *accum_ofdm, *delta_ofdm, *max_ofdm;
 struct statistics_rx_phy *cck, *accum_cck, *delta_cck, *max_cck;
 struct statistics_rx_non_phy *general, *accum_general;
 struct statistics_rx_non_phy *delta_general, *max_general;
 struct statistics_rx_ht_phy *ht, *accum_ht, *delta_ht, *max_ht;

 if (!iwl_is_alive(priv))
  return -EAGAIN;

 buf = kzalloc(bufsz, GFP_KERNEL);
 if (!buf)
  return -ENOMEM;

 /*
 * the statistic information display here is based on
 * the last statistics notification from uCode
 * might not reflect the current uCode activity
 */
 spin_lock_bh(&priv->statistics.lock);
 ofdm = &priv->statistics.rx_ofdm;
 cck = &priv->statistics.rx_cck;
 general = &priv->statistics.rx_non_phy;
 ht = &priv->statistics.rx_ofdm_ht;
 accum_ofdm = &priv->accum_stats.rx_ofdm;
 accum_cck = &priv->accum_stats.rx_cck;
 accum_general = &priv->accum_stats.rx_non_phy;
 accum_ht = &priv->accum_stats.rx_ofdm_ht;
 delta_ofdm = &priv->delta_stats.rx_ofdm;
 delta_cck = &priv->delta_stats.rx_cck;
 delta_general = &priv->delta_stats.rx_non_phy;
 delta_ht = &priv->delta_stats.rx_ofdm_ht;
 max_ofdm = &priv->max_delta_stats.rx_ofdm;
 max_cck = &priv->max_delta_stats.rx_cck;
 max_general = &priv->max_delta_stats.rx_non_phy;
 max_ht = &priv->max_delta_stats.rx_ofdm_ht;

 pos += iwl_statistics_flag(priv, buf, bufsz);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_header, "Statistics_Rx - OFDM:");
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "ina_cnt:",
    le32_to_cpu(ofdm->ina_cnt),
    accum_ofdm->ina_cnt,
    delta_ofdm->ina_cnt, max_ofdm->ina_cnt);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "fina_cnt:",
    le32_to_cpu(ofdm->fina_cnt), accum_ofdm->fina_cnt,
    delta_ofdm->fina_cnt, max_ofdm->fina_cnt);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "plcp_err:",
    le32_to_cpu(ofdm->plcp_err), accum_ofdm->plcp_err,
    delta_ofdm->plcp_err, max_ofdm->plcp_err);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "crc32_err:",
    le32_to_cpu(ofdm->crc32_err), accum_ofdm->crc32_err,
    delta_ofdm->crc32_err, max_ofdm->crc32_err);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "overrun_err:",
    le32_to_cpu(ofdm->overrun_err),
    accum_ofdm->overrun_err, delta_ofdm->overrun_err,
    max_ofdm->overrun_err);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "early_overrun_err:",
    le32_to_cpu(ofdm->early_overrun_err),
    accum_ofdm->early_overrun_err,
    delta_ofdm->early_overrun_err,
    max_ofdm->early_overrun_err);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "crc32_good:",
    le32_to_cpu(ofdm->crc32_good),
    accum_ofdm->crc32_good, delta_ofdm->crc32_good,
    max_ofdm->crc32_good);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "false_alarm_cnt:",
    le32_to_cpu(ofdm->false_alarm_cnt),
    accum_ofdm->false_alarm_cnt,
    delta_ofdm->false_alarm_cnt,
    max_ofdm->false_alarm_cnt);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "fina_sync_err_cnt:",
    le32_to_cpu(ofdm->fina_sync_err_cnt),
    accum_ofdm->fina_sync_err_cnt,
    delta_ofdm->fina_sync_err_cnt,
    max_ofdm->fina_sync_err_cnt);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "sfd_timeout:",
    le32_to_cpu(ofdm->sfd_timeout),
    accum_ofdm->sfd_timeout, delta_ofdm->sfd_timeout,
    max_ofdm->sfd_timeout);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "fina_timeout:",
    le32_to_cpu(ofdm->fina_timeout),
    accum_ofdm->fina_timeout, delta_ofdm->fina_timeout,
    max_ofdm->fina_timeout);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "unresponded_rts:",
    le32_to_cpu(ofdm->unresponded_rts),
    accum_ofdm->unresponded_rts,
    delta_ofdm->unresponded_rts,
    max_ofdm->unresponded_rts);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "rxe_frame_lmt_ovrun:",
    le32_to_cpu(ofdm->rxe_frame_limit_overrun),
    accum_ofdm->rxe_frame_limit_overrun,
    delta_ofdm->rxe_frame_limit_overrun,
    max_ofdm->rxe_frame_limit_overrun);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "sent_ack_cnt:",
    le32_to_cpu(ofdm->sent_ack_cnt),
    accum_ofdm->sent_ack_cnt, delta_ofdm->sent_ack_cnt,
    max_ofdm->sent_ack_cnt);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "sent_cts_cnt:",
    le32_to_cpu(ofdm->sent_cts_cnt),
    accum_ofdm->sent_cts_cnt, delta_ofdm->sent_cts_cnt,
    max_ofdm->sent_cts_cnt);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "sent_ba_rsp_cnt:",
    le32_to_cpu(ofdm->sent_ba_rsp_cnt),
    accum_ofdm->sent_ba_rsp_cnt,
    delta_ofdm->sent_ba_rsp_cnt,
    max_ofdm->sent_ba_rsp_cnt);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "dsp_self_kill:",
    le32_to_cpu(ofdm->dsp_self_kill),
    accum_ofdm->dsp_self_kill,
    delta_ofdm->dsp_self_kill,
    max_ofdm->dsp_self_kill);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "mh_format_err:",
    le32_to_cpu(ofdm->mh_format_err),
    accum_ofdm->mh_format_err,
    delta_ofdm->mh_format_err,
    max_ofdm->mh_format_err);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "re_acq_main_rssi_sum:",
    le32_to_cpu(ofdm->re_acq_main_rssi_sum),
    accum_ofdm->re_acq_main_rssi_sum,
    delta_ofdm->re_acq_main_rssi_sum,
    max_ofdm->re_acq_main_rssi_sum);

 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_header, "Statistics_Rx - CCK:");
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "ina_cnt:",
    le32_to_cpu(cck->ina_cnt), accum_cck->ina_cnt,
    delta_cck->ina_cnt, max_cck->ina_cnt);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "fina_cnt:",
    le32_to_cpu(cck->fina_cnt), accum_cck->fina_cnt,
    delta_cck->fina_cnt, max_cck->fina_cnt);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "plcp_err:",
    le32_to_cpu(cck->plcp_err), accum_cck->plcp_err,
    delta_cck->plcp_err, max_cck->plcp_err);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "crc32_err:",
    le32_to_cpu(cck->crc32_err), accum_cck->crc32_err,
    delta_cck->crc32_err, max_cck->crc32_err);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "overrun_err:",
    le32_to_cpu(cck->overrun_err),
    accum_cck->overrun_err, delta_cck->overrun_err,
    max_cck->overrun_err);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "early_overrun_err:",
    le32_to_cpu(cck->early_overrun_err),
    accum_cck->early_overrun_err,
    delta_cck->early_overrun_err,
    max_cck->early_overrun_err);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "crc32_good:",
    le32_to_cpu(cck->crc32_good), accum_cck->crc32_good,
    delta_cck->crc32_good, max_cck->crc32_good);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "false_alarm_cnt:",
    le32_to_cpu(cck->false_alarm_cnt),
    accum_cck->false_alarm_cnt,
    delta_cck->false_alarm_cnt, max_cck->false_alarm_cnt);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "fina_sync_err_cnt:",
    le32_to_cpu(cck->fina_sync_err_cnt),
    accum_cck->fina_sync_err_cnt,
    delta_cck->fina_sync_err_cnt,
    max_cck->fina_sync_err_cnt);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "sfd_timeout:",
    le32_to_cpu(cck->sfd_timeout),
    accum_cck->sfd_timeout, delta_cck->sfd_timeout,
    max_cck->sfd_timeout);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "fina_timeout:",
    le32_to_cpu(cck->fina_timeout),
    accum_cck->fina_timeout, delta_cck->fina_timeout,
    max_cck->fina_timeout);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "unresponded_rts:",
    le32_to_cpu(cck->unresponded_rts),
    accum_cck->unresponded_rts, delta_cck->unresponded_rts,
    max_cck->unresponded_rts);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "rxe_frame_lmt_ovrun:",
    le32_to_cpu(cck->rxe_frame_limit_overrun),
    accum_cck->rxe_frame_limit_overrun,
    delta_cck->rxe_frame_limit_overrun,
    max_cck->rxe_frame_limit_overrun);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "sent_ack_cnt:",
    le32_to_cpu(cck->sent_ack_cnt),
    accum_cck->sent_ack_cnt, delta_cck->sent_ack_cnt,
    max_cck->sent_ack_cnt);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "sent_cts_cnt:",
    le32_to_cpu(cck->sent_cts_cnt),
    accum_cck->sent_cts_cnt, delta_cck->sent_cts_cnt,
    max_cck->sent_cts_cnt);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "sent_ba_rsp_cnt:",
    le32_to_cpu(cck->sent_ba_rsp_cnt),
    accum_cck->sent_ba_rsp_cnt,
    delta_cck->sent_ba_rsp_cnt,
    max_cck->sent_ba_rsp_cnt);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "dsp_self_kill:",
    le32_to_cpu(cck->dsp_self_kill),
    accum_cck->dsp_self_kill, delta_cck->dsp_self_kill,
    max_cck->dsp_self_kill);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "mh_format_err:",
    le32_to_cpu(cck->mh_format_err),
    accum_cck->mh_format_err, delta_cck->mh_format_err,
    max_cck->mh_format_err);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "re_acq_main_rssi_sum:",
    le32_to_cpu(cck->re_acq_main_rssi_sum),
    accum_cck->re_acq_main_rssi_sum,
    delta_cck->re_acq_main_rssi_sum,
    max_cck->re_acq_main_rssi_sum);

 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_header, "Statistics_Rx - GENERAL:");
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "bogus_cts:",
    le32_to_cpu(general->bogus_cts),
    accum_general->bogus_cts, delta_general->bogus_cts,
    max_general->bogus_cts);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "bogus_ack:",
    le32_to_cpu(general->bogus_ack),
    accum_general->bogus_ack, delta_general->bogus_ack,
    max_general->bogus_ack);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "non_bssid_frames:",
    le32_to_cpu(general->non_bssid_frames),
    accum_general->non_bssid_frames,
    delta_general->non_bssid_frames,
    max_general->non_bssid_frames);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "filtered_frames:",
    le32_to_cpu(general->filtered_frames),
    accum_general->filtered_frames,
    delta_general->filtered_frames,
    max_general->filtered_frames);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "non_channel_beacons:",
    le32_to_cpu(general->non_channel_beacons),
    accum_general->non_channel_beacons,
    delta_general->non_channel_beacons,
    max_general->non_channel_beacons);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "channel_beacons:",
    le32_to_cpu(general->channel_beacons),
    accum_general->channel_beacons,
    delta_general->channel_beacons,
    max_general->channel_beacons);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "num_missed_bcon:",
    le32_to_cpu(general->num_missed_bcon),
    accum_general->num_missed_bcon,
    delta_general->num_missed_bcon,
    max_general->num_missed_bcon);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "adc_rx_saturation_time:",
    le32_to_cpu(general->adc_rx_saturation_time),
    accum_general->adc_rx_saturation_time,
    delta_general->adc_rx_saturation_time,
    max_general->adc_rx_saturation_time);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "ina_detect_search_tm:",
    le32_to_cpu(general->ina_detection_search_time),
    accum_general->ina_detection_search_time,
    delta_general->ina_detection_search_time,
    max_general->ina_detection_search_time);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "beacon_silence_rssi_a:",
    le32_to_cpu(general->beacon_silence_rssi_a),
    accum_general->beacon_silence_rssi_a,
    delta_general->beacon_silence_rssi_a,
    max_general->beacon_silence_rssi_a);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "beacon_silence_rssi_b:",
    le32_to_cpu(general->beacon_silence_rssi_b),
    accum_general->beacon_silence_rssi_b,
    delta_general->beacon_silence_rssi_b,
    max_general->beacon_silence_rssi_b);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "beacon_silence_rssi_c:",
    le32_to_cpu(general->beacon_silence_rssi_c),
    accum_general->beacon_silence_rssi_c,
    delta_general->beacon_silence_rssi_c,
    max_general->beacon_silence_rssi_c);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "interference_data_flag:",
    le32_to_cpu(general->interference_data_flag),
    accum_general->interference_data_flag,
    delta_general->interference_data_flag,
    max_general->interference_data_flag);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "channel_load:",
    le32_to_cpu(general->channel_load),
    accum_general->channel_load,
    delta_general->channel_load,
    max_general->channel_load);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "dsp_false_alarms:",
    le32_to_cpu(general->dsp_false_alarms),
    accum_general->dsp_false_alarms,
    delta_general->dsp_false_alarms,
    max_general->dsp_false_alarms);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "beacon_rssi_a:",
    le32_to_cpu(general->beacon_rssi_a),
    accum_general->beacon_rssi_a,
    delta_general->beacon_rssi_a,
    max_general->beacon_rssi_a);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "beacon_rssi_b:",
    le32_to_cpu(general->beacon_rssi_b),
    accum_general->beacon_rssi_b,
    delta_general->beacon_rssi_b,
    max_general->beacon_rssi_b);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "beacon_rssi_c:",
    le32_to_cpu(general->beacon_rssi_c),
    accum_general->beacon_rssi_c,
    delta_general->beacon_rssi_c,
    max_general->beacon_rssi_c);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "beacon_energy_a:",
    le32_to_cpu(general->beacon_energy_a),
    accum_general->beacon_energy_a,
    delta_general->beacon_energy_a,
    max_general->beacon_energy_a);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "beacon_energy_b:",
    le32_to_cpu(general->beacon_energy_b),
    accum_general->beacon_energy_b,
    delta_general->beacon_energy_b,
    max_general->beacon_energy_b);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "beacon_energy_c:",
    le32_to_cpu(general->beacon_energy_c),
    accum_general->beacon_energy_c,
    delta_general->beacon_energy_c,
    max_general->beacon_energy_c);

 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_header, "Statistics_Rx - OFDM_HT:");
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "plcp_err:",
    le32_to_cpu(ht->plcp_err), accum_ht->plcp_err,
    delta_ht->plcp_err, max_ht->plcp_err);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "overrun_err:",
    le32_to_cpu(ht->overrun_err), accum_ht->overrun_err,
    delta_ht->overrun_err, max_ht->overrun_err);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "early_overrun_err:",
    le32_to_cpu(ht->early_overrun_err),
    accum_ht->early_overrun_err,
    delta_ht->early_overrun_err,
    max_ht->early_overrun_err);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "crc32_good:",
    le32_to_cpu(ht->crc32_good), accum_ht->crc32_good,
    delta_ht->crc32_good, max_ht->crc32_good);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "crc32_err:",
    le32_to_cpu(ht->crc32_err), accum_ht->crc32_err,
    delta_ht->crc32_err, max_ht->crc32_err);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "mh_format_err:",
    le32_to_cpu(ht->mh_format_err),
    accum_ht->mh_format_err,
    delta_ht->mh_format_err, max_ht->mh_format_err);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "agg_crc32_good:",
    le32_to_cpu(ht->agg_crc32_good),
    accum_ht->agg_crc32_good,
    delta_ht->agg_crc32_good, max_ht->agg_crc32_good);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "agg_mpdu_cnt:",
    le32_to_cpu(ht->agg_mpdu_cnt),
    accum_ht->agg_mpdu_cnt,
    delta_ht->agg_mpdu_cnt, max_ht->agg_mpdu_cnt);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "agg_cnt:",
    le32_to_cpu(ht->agg_cnt), accum_ht->agg_cnt,
    delta_ht->agg_cnt, max_ht->agg_cnt);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "unsupport_mcs:",
    le32_to_cpu(ht->unsupport_mcs),
    accum_ht->unsupport_mcs,
    delta_ht->unsupport_mcs, max_ht->unsupport_mcs);

 spin_unlock_bh(&priv->statistics.lock);

 ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 kfree(buf);
 return ret;
}

static ssize_t iwl_dbgfs_ucode_tx_stats_read(struct file *file,
     char __user *user_buf,
     size_t count, loff_t *ppos)
{
 struct iwl_priv *priv = file->private_data;
 int pos = 0;
 char *buf;
 int bufsz = (sizeof(struct statistics_tx) * 48) + 250;
 ssize_t ret;
 struct statistics_tx *tx, *accum_tx, *delta_tx, *max_tx;

 if (!iwl_is_alive(priv))
  return -EAGAIN;

 buf = kzalloc(bufsz, GFP_KERNEL);
 if (!buf)
  return -ENOMEM;

 /* the statistic information display here is based on
 * the last statistics notification from uCode
 * might not reflect the current uCode activity
 */
 spin_lock_bh(&priv->statistics.lock);

 tx = &priv->statistics.tx;
 accum_tx = &priv->accum_stats.tx;
 delta_tx = &priv->delta_stats.tx;
 max_tx = &priv->max_delta_stats.tx;

 pos += iwl_statistics_flag(priv, buf, bufsz);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_header, "Statistics_Tx:");
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "preamble:",
    le32_to_cpu(tx->preamble_cnt),
    accum_tx->preamble_cnt,
    delta_tx->preamble_cnt, max_tx->preamble_cnt);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "rx_detected_cnt:",
    le32_to_cpu(tx->rx_detected_cnt),
    accum_tx->rx_detected_cnt,
    delta_tx->rx_detected_cnt, max_tx->rx_detected_cnt);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "bt_prio_defer_cnt:",
    le32_to_cpu(tx->bt_prio_defer_cnt),
    accum_tx->bt_prio_defer_cnt,
    delta_tx->bt_prio_defer_cnt,
    max_tx->bt_prio_defer_cnt);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "bt_prio_kill_cnt:",
    le32_to_cpu(tx->bt_prio_kill_cnt),
    accum_tx->bt_prio_kill_cnt,
    delta_tx->bt_prio_kill_cnt,
    max_tx->bt_prio_kill_cnt);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "few_bytes_cnt:",
    le32_to_cpu(tx->few_bytes_cnt),
    accum_tx->few_bytes_cnt,
    delta_tx->few_bytes_cnt, max_tx->few_bytes_cnt);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "cts_timeout:",
    le32_to_cpu(tx->cts_timeout), accum_tx->cts_timeout,
    delta_tx->cts_timeout, max_tx->cts_timeout);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "ack_timeout:",
    le32_to_cpu(tx->ack_timeout),
    accum_tx->ack_timeout,
    delta_tx->ack_timeout, max_tx->ack_timeout);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "expected_ack_cnt:",
    le32_to_cpu(tx->expected_ack_cnt),
    accum_tx->expected_ack_cnt,
    delta_tx->expected_ack_cnt,
    max_tx->expected_ack_cnt);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "actual_ack_cnt:",
    le32_to_cpu(tx->actual_ack_cnt),
    accum_tx->actual_ack_cnt,
    delta_tx->actual_ack_cnt,
    max_tx->actual_ack_cnt);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "dump_msdu_cnt:",
    le32_to_cpu(tx->dump_msdu_cnt),
    accum_tx->dump_msdu_cnt,
    delta_tx->dump_msdu_cnt,
    max_tx->dump_msdu_cnt);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "abort_nxt_frame_mismatch:",
    le32_to_cpu(tx->burst_abort_next_frame_mismatch_cnt),
    accum_tx->burst_abort_next_frame_mismatch_cnt,
    delta_tx->burst_abort_next_frame_mismatch_cnt,
    max_tx->burst_abort_next_frame_mismatch_cnt);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "abort_missing_nxt_frame:",
    le32_to_cpu(tx->burst_abort_missing_next_frame_cnt),
    accum_tx->burst_abort_missing_next_frame_cnt,
    delta_tx->burst_abort_missing_next_frame_cnt,
    max_tx->burst_abort_missing_next_frame_cnt);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "cts_timeout_collision:",
    le32_to_cpu(tx->cts_timeout_collision),
    accum_tx->cts_timeout_collision,
    delta_tx->cts_timeout_collision,
    max_tx->cts_timeout_collision);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "ack_ba_timeout_collision:",
    le32_to_cpu(tx->ack_or_ba_timeout_collision),
    accum_tx->ack_or_ba_timeout_collision,
    delta_tx->ack_or_ba_timeout_collision,
    max_tx->ack_or_ba_timeout_collision);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "agg ba_timeout:",
    le32_to_cpu(tx->agg.ba_timeout),
    accum_tx->agg.ba_timeout,
    delta_tx->agg.ba_timeout,
    max_tx->agg.ba_timeout);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "agg ba_resched_frames:",
    le32_to_cpu(tx->agg.ba_reschedule_frames),
    accum_tx->agg.ba_reschedule_frames,
    delta_tx->agg.ba_reschedule_frames,
    max_tx->agg.ba_reschedule_frames);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "agg scd_query_agg_frame:",
    le32_to_cpu(tx->agg.scd_query_agg_frame_cnt),
    accum_tx->agg.scd_query_agg_frame_cnt,
    delta_tx->agg.scd_query_agg_frame_cnt,
    max_tx->agg.scd_query_agg_frame_cnt);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "agg scd_query_no_agg:",
    le32_to_cpu(tx->agg.scd_query_no_agg),
    accum_tx->agg.scd_query_no_agg,
    delta_tx->agg.scd_query_no_agg,
    max_tx->agg.scd_query_no_agg);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "agg scd_query_agg:",
    le32_to_cpu(tx->agg.scd_query_agg),
    accum_tx->agg.scd_query_agg,
    delta_tx->agg.scd_query_agg,
    max_tx->agg.scd_query_agg);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "agg scd_query_mismatch:",
    le32_to_cpu(tx->agg.scd_query_mismatch),
    accum_tx->agg.scd_query_mismatch,
    delta_tx->agg.scd_query_mismatch,
    max_tx->agg.scd_query_mismatch);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "agg frame_not_ready:",
    le32_to_cpu(tx->agg.frame_not_ready),
    accum_tx->agg.frame_not_ready,
    delta_tx->agg.frame_not_ready,
    max_tx->agg.frame_not_ready);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "agg underrun:",
    le32_to_cpu(tx->agg.underrun),
    accum_tx->agg.underrun,
    delta_tx->agg.underrun, max_tx->agg.underrun);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "agg bt_prio_kill:",
    le32_to_cpu(tx->agg.bt_prio_kill),
    accum_tx->agg.bt_prio_kill,
    delta_tx->agg.bt_prio_kill,
    max_tx->agg.bt_prio_kill);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "agg rx_ba_rsp_cnt:",
    le32_to_cpu(tx->agg.rx_ba_rsp_cnt),
    accum_tx->agg.rx_ba_rsp_cnt,
    delta_tx->agg.rx_ba_rsp_cnt,
    max_tx->agg.rx_ba_rsp_cnt);

 if (tx->tx_power.ant_a || tx->tx_power.ant_b || tx->tx_power.ant_c) {
  pos += scnprintf(buf + pos, bufsz - pos,
   "tx power: (1/2 dB step)\n");
  if ((priv->nvm_data->valid_tx_ant & ANT_A) &&
      tx->tx_power.ant_a)
   pos += scnprintf(buf + pos, bufsz - pos,
     fmt_hex, "antenna A:",
     tx->tx_power.ant_a);
  if ((priv->nvm_data->valid_tx_ant & ANT_B) &&
      tx->tx_power.ant_b)
   pos += scnprintf(buf + pos, bufsz - pos,
     fmt_hex, "antenna B:",
     tx->tx_power.ant_b);
  if ((priv->nvm_data->valid_tx_ant & ANT_C) &&
      tx->tx_power.ant_c)
   pos += scnprintf(buf + pos, bufsz - pos,
     fmt_hex, "antenna C:",
     tx->tx_power.ant_c);
 }

 spin_unlock_bh(&priv->statistics.lock);

 ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 kfree(buf);
 return ret;
}

static ssize_t iwl_dbgfs_ucode_general_stats_read(struct file *file,
     char __user *user_buf,
     size_t count, loff_t *ppos)
{
 struct iwl_priv *priv = file->private_data;
 int pos = 0;
 char *buf;
 int bufsz = sizeof(struct statistics_general) * 10 + 300;
 ssize_t ret;
 struct statistics_general_common *general, *accum_general;
 struct statistics_general_common *delta_general, *max_general;
 struct statistics_dbg *dbg, *accum_dbg, *delta_dbg, *max_dbg;
 struct statistics_div *div, *accum_div, *delta_div, *max_div;

 if (!iwl_is_alive(priv))
  return -EAGAIN;

 buf = kzalloc(bufsz, GFP_KERNEL);
 if (!buf)
  return -ENOMEM;

 /* the statistic information display here is based on
 * the last statistics notification from uCode
 * might not reflect the current uCode activity
 */

 spin_lock_bh(&priv->statistics.lock);

 general = &priv->statistics.common;
 dbg = &priv->statistics.common.dbg;
 div = &priv->statistics.common.div;
 accum_general = &priv->accum_stats.common;
 accum_dbg = &priv->accum_stats.common.dbg;
 accum_div = &priv->accum_stats.common.div;
 delta_general = &priv->delta_stats.common;
 max_general = &priv->max_delta_stats.common;
 delta_dbg = &priv->delta_stats.common.dbg;
 max_dbg = &priv->max_delta_stats.common.dbg;
 delta_div = &priv->delta_stats.common.div;
 max_div = &priv->max_delta_stats.common.div;

 pos += iwl_statistics_flag(priv, buf, bufsz);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_header, "Statistics_General:");
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_value, "temperature:",
    le32_to_cpu(general->temperature));
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_value, "temperature_m:",
    le32_to_cpu(general->temperature_m));
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_value, "ttl_timestamp:",
    le32_to_cpu(general->ttl_timestamp));
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "burst_check:",
    le32_to_cpu(dbg->burst_check),
    accum_dbg->burst_check,
    delta_dbg->burst_check, max_dbg->burst_check);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "burst_count:",
    le32_to_cpu(dbg->burst_count),
    accum_dbg->burst_count,
    delta_dbg->burst_count, max_dbg->burst_count);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "wait_for_silence_timeout_count:",
    le32_to_cpu(dbg->wait_for_silence_timeout_cnt),
    accum_dbg->wait_for_silence_timeout_cnt,
    delta_dbg->wait_for_silence_timeout_cnt,
    max_dbg->wait_for_silence_timeout_cnt);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "sleep_time:",
    le32_to_cpu(general->sleep_time),
    accum_general->sleep_time,
    delta_general->sleep_time, max_general->sleep_time);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "slots_out:",
    le32_to_cpu(general->slots_out),
    accum_general->slots_out,
    delta_general->slots_out, max_general->slots_out);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "slots_idle:",
    le32_to_cpu(general->slots_idle),
    accum_general->slots_idle,
    delta_general->slots_idle, max_general->slots_idle);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "tx_on_a:",
    le32_to_cpu(div->tx_on_a), accum_div->tx_on_a,
    delta_div->tx_on_a, max_div->tx_on_a);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "tx_on_b:",
    le32_to_cpu(div->tx_on_b), accum_div->tx_on_b,
    delta_div->tx_on_b, max_div->tx_on_b);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "exec_time:",
    le32_to_cpu(div->exec_time), accum_div->exec_time,
    delta_div->exec_time, max_div->exec_time);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "probe_time:",
    le32_to_cpu(div->probe_time), accum_div->probe_time,
    delta_div->probe_time, max_div->probe_time);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "rx_enable_counter:",
    le32_to_cpu(general->rx_enable_counter),
    accum_general->rx_enable_counter,
    delta_general->rx_enable_counter,
    max_general->rx_enable_counter);
 pos += scnprintf(buf + pos, bufsz - pos,
    fmt_table, "num_of_sos_states:",
    le32_to_cpu(general->num_of_sos_states),
    accum_general->num_of_sos_states,
    delta_general->num_of_sos_states,
    max_general->num_of_sos_states);

 spin_unlock_bh(&priv->statistics.lock);

 ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 kfree(buf);
 return ret;
}

static ssize_t iwl_dbgfs_ucode_bt_stats_read(struct file *file,
     char __user *user_buf,
     size_t count, loff_t *ppos)
{
 struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
 int pos = 0;
 char *buf;
 int bufsz = (sizeof(struct statistics_bt_activity) * 24) + 200;
 ssize_t ret;
 struct statistics_bt_activity *bt, *accum_bt;

 if (!iwl_is_alive(priv))
  return -EAGAIN;

 if (!priv->bt_enable_flag)
  return -EINVAL;

 /* make request to uCode to retrieve statistics information */
 mutex_lock(&priv->mutex);
 ret = iwl_send_statistics_request(priv, 0, false);
 mutex_unlock(&priv->mutex);

 if (ret)
  return -EAGAIN;
 buf = kzalloc(bufsz, GFP_KERNEL);
 if (!buf)
  return -ENOMEM;

 /*
 * the statistic information display here is based on
 * the last statistics notification from uCode
 * might not reflect the current uCode activity
 */

 spin_lock_bh(&priv->statistics.lock);

 bt = &priv->statistics.bt_activity;
 accum_bt = &priv->accum_stats.bt_activity;

 pos += iwl_statistics_flag(priv, buf, bufsz);
 pos += scnprintf(buf + pos, bufsz - pos, "Statistics_BT:\n");
 pos += scnprintf(buf + pos, bufsz - pos,
   "\t\t\tcurrent\t\t\taccumulative\n");
 pos += scnprintf(buf + pos, bufsz - pos,
    "hi_priority_tx_req_cnt:\t\t%u\t\t\t%u\n",
    le32_to_cpu(bt->hi_priority_tx_req_cnt),
    accum_bt->hi_priority_tx_req_cnt);
 pos += scnprintf(buf + pos, bufsz - pos,
    "hi_priority_tx_denied_cnt:\t%u\t\t\t%u\n",
    le32_to_cpu(bt->hi_priority_tx_denied_cnt),
    accum_bt->hi_priority_tx_denied_cnt);
 pos += scnprintf(buf + pos, bufsz - pos,
    "lo_priority_tx_req_cnt:\t\t%u\t\t\t%u\n",
    le32_to_cpu(bt->lo_priority_tx_req_cnt),
    accum_bt->lo_priority_tx_req_cnt);
 pos += scnprintf(buf + pos, bufsz - pos,
    "lo_priority_tx_denied_cnt:\t%u\t\t\t%u\n",
    le32_to_cpu(bt->lo_priority_tx_denied_cnt),
    accum_bt->lo_priority_tx_denied_cnt);
 pos += scnprintf(buf + pos, bufsz - pos,
    "hi_priority_rx_req_cnt:\t\t%u\t\t\t%u\n",
    le32_to_cpu(bt->hi_priority_rx_req_cnt),
    accum_bt->hi_priority_rx_req_cnt);
 pos += scnprintf(buf + pos, bufsz - pos,
    "hi_priority_rx_denied_cnt:\t%u\t\t\t%u\n",
    le32_to_cpu(bt->hi_priority_rx_denied_cnt),
    accum_bt->hi_priority_rx_denied_cnt);
 pos += scnprintf(buf + pos, bufsz - pos,
    "lo_priority_rx_req_cnt:\t\t%u\t\t\t%u\n",
    le32_to_cpu(bt->lo_priority_rx_req_cnt),
    accum_bt->lo_priority_rx_req_cnt);
 pos += scnprintf(buf + pos, bufsz - pos,
    "lo_priority_rx_denied_cnt:\t%u\t\t\t%u\n",
    le32_to_cpu(bt->lo_priority_rx_denied_cnt),
    accum_bt->lo_priority_rx_denied_cnt);

 pos += scnprintf(buf + pos, bufsz - pos,
    "(rx)num_bt_kills:\t\t%u\t\t\t%u\n",
    le32_to_cpu(priv->statistics.num_bt_kills),
    priv->statistics.accum_num_bt_kills);

 spin_unlock_bh(&priv->statistics.lock);

 ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 kfree(buf);
 return ret;
}

static ssize_t iwl_dbgfs_reply_tx_error_read(struct file *file,
     char __user *user_buf,
     size_t count, loff_t *ppos)
{
 struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
 int pos = 0;
 char *buf;
 int bufsz = (sizeof(struct reply_tx_error_statistics) * 24) +
  (sizeof(struct reply_agg_tx_error_statistics) * 24) + 200;
 ssize_t ret;

 if (!iwl_is_alive(priv))
  return -EAGAIN;

 buf = kzalloc(bufsz, GFP_KERNEL);
 if (!buf)
  return -ENOMEM;

 pos += scnprintf(buf + pos, bufsz - pos, "Statistics_TX_Error:\n");
 pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t\t%u\n",
    iwl_get_tx_fail_reason(TX_STATUS_POSTPONE_DELAY),
    priv->reply_tx_stats.pp_delay);
 pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
    iwl_get_tx_fail_reason(TX_STATUS_POSTPONE_FEW_BYTES),
    priv->reply_tx_stats.pp_few_bytes);
 pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
    iwl_get_tx_fail_reason(TX_STATUS_POSTPONE_BT_PRIO),
    priv->reply_tx_stats.pp_bt_prio);
 pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
    iwl_get_tx_fail_reason(TX_STATUS_POSTPONE_QUIET_PERIOD),
    priv->reply_tx_stats.pp_quiet_period);
 pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
    iwl_get_tx_fail_reason(TX_STATUS_POSTPONE_CALC_TTAK),
    priv->reply_tx_stats.pp_calc_ttak);
 pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t%u\n",
    iwl_get_tx_fail_reason(
    TX_STATUS_FAIL_INTERNAL_CROSSED_RETRY),
    priv->reply_tx_stats.int_crossed_retry);
 pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
    iwl_get_tx_fail_reason(TX_STATUS_FAIL_SHORT_LIMIT),
    priv->reply_tx_stats.short_limit);
 pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
    iwl_get_tx_fail_reason(TX_STATUS_FAIL_LONG_LIMIT),
    priv->reply_tx_stats.long_limit);
 pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
    iwl_get_tx_fail_reason(TX_STATUS_FAIL_FIFO_UNDERRUN),
    priv->reply_tx_stats.fifo_underrun);
 pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
    iwl_get_tx_fail_reason(TX_STATUS_FAIL_DRAIN_FLOW),
    priv->reply_tx_stats.drain_flow);
 pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
    iwl_get_tx_fail_reason(TX_STATUS_FAIL_RFKILL_FLUSH),
    priv->reply_tx_stats.rfkill_flush);
 pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
    iwl_get_tx_fail_reason(TX_STATUS_FAIL_LIFE_EXPIRE),
    priv->reply_tx_stats.life_expire);
 pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
    iwl_get_tx_fail_reason(TX_STATUS_FAIL_DEST_PS),
    priv->reply_tx_stats.dest_ps);
 pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
    iwl_get_tx_fail_reason(TX_STATUS_FAIL_HOST_ABORTED),
    priv->reply_tx_stats.host_abort);
 pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
    iwl_get_tx_fail_reason(TX_STATUS_FAIL_BT_RETRY),
    priv->reply_tx_stats.pp_delay);
 pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
    iwl_get_tx_fail_reason(TX_STATUS_FAIL_STA_INVALID),
    priv->reply_tx_stats.sta_invalid);
 pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
    iwl_get_tx_fail_reason(TX_STATUS_FAIL_FRAG_DROPPED),
    priv->reply_tx_stats.frag_drop);
 pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
    iwl_get_tx_fail_reason(TX_STATUS_FAIL_TID_DISABLE),
    priv->reply_tx_stats.tid_disable);
 pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
    iwl_get_tx_fail_reason(TX_STATUS_FAIL_FIFO_FLUSHED),
    priv->reply_tx_stats.fifo_flush);
 pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t%u\n",
    iwl_get_tx_fail_reason(
    TX_STATUS_FAIL_INSUFFICIENT_CF_POLL),
    priv->reply_tx_stats.insuff_cf_poll);
 pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
    iwl_get_tx_fail_reason(TX_STATUS_FAIL_PASSIVE_NO_RX),
    priv->reply_tx_stats.fail_hw_drop);
 pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t%u\n",
    iwl_get_tx_fail_reason(
    TX_STATUS_FAIL_NO_BEACON_ON_RADAR),
    priv->reply_tx_stats.sta_color_mismatch);
 pos += scnprintf(buf + pos, bufsz - pos, "UNKNOWN:\t\t\t%u\n",
    priv->reply_tx_stats.unknown);

 pos += scnprintf(buf + pos, bufsz - pos,
    "\nStatistics_Agg_TX_Error:\n");

 pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
    iwl_get_agg_tx_fail_reason(AGG_TX_STATE_UNDERRUN_MSK),
    priv->reply_agg_tx_stats.underrun);
 pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
    iwl_get_agg_tx_fail_reason(AGG_TX_STATE_BT_PRIO_MSK),
    priv->reply_agg_tx_stats.bt_prio);
 pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
    iwl_get_agg_tx_fail_reason(AGG_TX_STATE_FEW_BYTES_MSK),
    priv->reply_agg_tx_stats.few_bytes);
 pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
    iwl_get_agg_tx_fail_reason(AGG_TX_STATE_ABORT_MSK),
    priv->reply_agg_tx_stats.abort);
 pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t%u\n",
    iwl_get_agg_tx_fail_reason(
    AGG_TX_STATE_LAST_SENT_TTL_MSK),
    priv->reply_agg_tx_stats.last_sent_ttl);
 pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t%u\n",
    iwl_get_agg_tx_fail_reason(
    AGG_TX_STATE_LAST_SENT_TRY_CNT_MSK),
    priv->reply_agg_tx_stats.last_sent_try);
 pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t%u\n",
    iwl_get_agg_tx_fail_reason(
    AGG_TX_STATE_LAST_SENT_BT_KILL_MSK),
    priv->reply_agg_tx_stats.last_sent_bt_kill);
 pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
    iwl_get_agg_tx_fail_reason(AGG_TX_STATE_SCD_QUERY_MSK),
    priv->reply_agg_tx_stats.scd_query);
 pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t%u\n",
    iwl_get_agg_tx_fail_reason(
    AGG_TX_STATE_TEST_BAD_CRC32_MSK),
    priv->reply_agg_tx_stats.bad_crc32);
 pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
    iwl_get_agg_tx_fail_reason(AGG_TX_STATE_RESPONSE_MSK),
    priv->reply_agg_tx_stats.response);
 pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
    iwl_get_agg_tx_fail_reason(AGG_TX_STATE_DUMP_TX_MSK),
    priv->reply_agg_tx_stats.dump_tx);
 pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
    iwl_get_agg_tx_fail_reason(AGG_TX_STATE_DELAY_TX_MSK),
    priv->reply_agg_tx_stats.delay_tx);
 pos += scnprintf(buf + pos, bufsz - pos, "UNKNOWN:\t\t\t%u\n",
    priv->reply_agg_tx_stats.unknown);

 ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 kfree(buf);
 return ret;
}

static ssize_t iwl_dbgfs_sensitivity_read(struct file *file,
     char __user *user_buf,
     size_t count, loff_t *ppos) {

 struct iwl_priv *priv = file->private_data;
 int pos = 0;
 int cnt = 0;
 char *buf;
 int bufsz = sizeof(struct iwl_sensitivity_data) * 4 + 100;
 ssize_t ret;
 struct iwl_sensitivity_data *data;

 data = &priv->sensitivity_data;
 buf = kzalloc(bufsz, GFP_KERNEL);
 if (!buf)
  return -ENOMEM;

 pos += scnprintf(buf + pos, bufsz - pos, "auto_corr_ofdm:\t\t\t %u\n",
   data->auto_corr_ofdm);
 pos += scnprintf(buf + pos, bufsz - pos,
   "auto_corr_ofdm_mrc:\t\t %u\n",
   data->auto_corr_ofdm_mrc);
 pos += scnprintf(buf + pos, bufsz - pos, "auto_corr_ofdm_x1:\t\t %u\n",
   data->auto_corr_ofdm_x1);
 pos += scnprintf(buf + pos, bufsz - pos,
   "auto_corr_ofdm_mrc_x1:\t\t %u\n",
   data->auto_corr_ofdm_mrc_x1);
 pos += scnprintf(buf + pos, bufsz - pos, "auto_corr_cck:\t\t\t %u\n",
   data->auto_corr_cck);
 pos += scnprintf(buf + pos, bufsz - pos, "auto_corr_cck_mrc:\t\t %u\n",
   data->auto_corr_cck_mrc);
 pos += scnprintf(buf + pos, bufsz - pos,
   "last_bad_plcp_cnt_ofdm:\t\t %u\n",
   data->last_bad_plcp_cnt_ofdm);
 pos += scnprintf(buf + pos, bufsz - pos, "last_fa_cnt_ofdm:\t\t %u\n",
   data->last_fa_cnt_ofdm);
 pos += scnprintf(buf + pos, bufsz - pos,
   "last_bad_plcp_cnt_cck:\t\t %u\n",
   data->last_bad_plcp_cnt_cck);
 pos += scnprintf(buf + pos, bufsz - pos, "last_fa_cnt_cck:\t\t %u\n",
   data->last_fa_cnt_cck);
 pos += scnprintf(buf + pos, bufsz - pos, "nrg_curr_state:\t\t\t %u\n",
   data->nrg_curr_state);
 pos += scnprintf(buf + pos, bufsz - pos, "nrg_prev_state:\t\t\t %u\n",
   data->nrg_prev_state);
 pos += scnprintf(buf + pos, bufsz - pos, "nrg_value:\t\t\t");
 for (cnt = 0; cnt < 10; cnt++) {
  pos += scnprintf(buf + pos, bufsz - pos, " %u",
    data->nrg_value[cnt]);
 }
 pos += scnprintf(buf + pos, bufsz - pos, "\n");
 pos += scnprintf(buf + pos, bufsz - pos, "nrg_silence_rssi:\t\t");
 for (cnt = 0; cnt < NRG_NUM_PREV_STAT_L; cnt++) {
  pos += scnprintf(buf + pos, bufsz - pos, " %u",
    data->nrg_silence_rssi[cnt]);
 }
 pos += scnprintf(buf + pos, bufsz - pos, "\n");
 pos += scnprintf(buf + pos, bufsz - pos, "nrg_silence_ref:\t\t %u\n",
   data->nrg_silence_ref);
 pos += scnprintf(buf + pos, bufsz - pos, "nrg_energy_idx:\t\t\t %u\n",
   data->nrg_energy_idx);
 pos += scnprintf(buf + pos, bufsz - pos, "nrg_silence_idx:\t\t %u\n",
   data->nrg_silence_idx);
 pos += scnprintf(buf + pos, bufsz - pos, "nrg_th_cck:\t\t\t %u\n",
   data->nrg_th_cck);
 pos += scnprintf(buf + pos, bufsz - pos,
   "nrg_auto_corr_silence_diff:\t %u\n",
   data->nrg_auto_corr_silence_diff);
 pos += scnprintf(buf + pos, bufsz - pos, "num_in_cck_no_fa:\t\t %u\n",
   data->num_in_cck_no_fa);
 pos += scnprintf(buf + pos, bufsz - pos, "nrg_th_ofdm:\t\t\t %u\n",
   data->nrg_th_ofdm);

 ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 kfree(buf);
 return ret;
}


static ssize_t iwl_dbgfs_chain_noise_read(struct file *file,
     char __user *user_buf,
     size_t count, loff_t *ppos) {

 struct iwl_priv *priv = file->private_data;
 int pos = 0;
 int cnt = 0;
 char *buf;
 int bufsz = sizeof(struct iwl_chain_noise_data) * 4 + 100;
 ssize_t ret;
 struct iwl_chain_noise_data *data;

 data = &priv->chain_noise_data;
 buf = kzalloc(bufsz, GFP_KERNEL);
 if (!buf)
  return -ENOMEM;

 pos += scnprintf(buf + pos, bufsz - pos, "active_chains:\t\t\t %u\n",
   data->active_chains);
 pos += scnprintf(buf + pos, bufsz - pos, "chain_noise_a:\t\t\t %u\n",
   data->chain_noise_a);
 pos += scnprintf(buf + pos, bufsz - pos, "chain_noise_b:\t\t\t %u\n",
   data->chain_noise_b);
 pos += scnprintf(buf + pos, bufsz - pos, "chain_noise_c:\t\t\t %u\n",
   data->chain_noise_c);
 pos += scnprintf(buf + pos, bufsz - pos, "chain_signal_a:\t\t\t %u\n",
   data->chain_signal_a);
 pos += scnprintf(buf + pos, bufsz - pos, "chain_signal_b:\t\t\t %u\n",
   data->chain_signal_b);
 pos += scnprintf(buf + pos, bufsz - pos, "chain_signal_c:\t\t\t %u\n",
   data->chain_signal_c);
 pos += scnprintf(buf + pos, bufsz - pos, "beacon_count:\t\t\t %u\n",
   data->beacon_count);

 pos += scnprintf(buf + pos, bufsz - pos, "disconn_array:\t\t\t");
 for (cnt = 0; cnt < NUM_RX_CHAINS; cnt++) {
  pos += scnprintf(buf + pos, bufsz - pos, " %u",
    data->disconn_array[cnt]);
 }
 pos += scnprintf(buf + pos, bufsz - pos, "\n");
 pos += scnprintf(buf + pos, bufsz - pos, "delta_gain_code:\t\t");
 for (cnt = 0; cnt < NUM_RX_CHAINS; cnt++) {
  pos += scnprintf(buf + pos, bufsz - pos, " %u",
    data->delta_gain_code[cnt]);
 }
 pos += scnprintf(buf + pos, bufsz - pos, "\n");
 pos += scnprintf(buf + pos, bufsz - pos, "radio_write:\t\t\t %u\n",
   data->radio_write);
 pos += scnprintf(buf + pos, bufsz - pos, "state:\t\t\t\t %u\n",
   data->state);

 ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 kfree(buf);
 return ret;
}

static ssize_t iwl_dbgfs_power_save_status_read(struct file *file,
          char __user *user_buf,
          size_t count, loff_t *ppos)
{
 struct iwl_priv *priv = file->private_data;
 char buf[60];
 int pos = 0;
 const size_t bufsz = sizeof(buf);
 u32 pwrsave_status;

 pwrsave_status = iwl_read32(priv->trans, CSR_GP_CNTRL) &
   CSR_GP_REG_POWER_SAVE_STATUS_MSK;

 pos += scnprintf(buf + pos, bufsz - pos, "Power Save Status: ");
 pos += scnprintf(buf + pos, bufsz - pos, "%s\n",
  (pwrsave_status == CSR_GP_REG_NO_POWER_SAVE) ? "none" :
  (pwrsave_status == CSR_GP_REG_MAC_POWER_SAVE) ? "MAC" :
  (pwrsave_status == CSR_GP_REG_PHY_POWER_SAVE) ? "PHY" :
  "error");

 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
}

static ssize_t iwl_dbgfs_clear_ucode_statistics_write(struct file *file,
      const char __user *user_buf,
      size_t count, loff_t *ppos)
{
 struct iwl_priv *priv = file->private_data;
 char buf[8];
 int buf_size;
 int clear;

 memset(buf, 0, sizeof(buf));
 buf_size = min(count, sizeof(buf) -  1);
 if (copy_from_user(buf, user_buf, buf_size))
  return -EFAULT;
 if (sscanf(buf, "%d", &clear) != 1)
  return -EFAULT;

 /* make request to uCode to retrieve statistics information */
 mutex_lock(&priv->mutex);
 iwl_send_statistics_request(priv, 0, true);
 mutex_unlock(&priv->mutex);

 return count;
}

static ssize_t iwl_dbgfs_ucode_tracing_read(struct file *file,
     char __user *user_buf,
     size_t count, loff_t *ppos) {

 struct iwl_priv *priv = file->private_data;
 int pos = 0;
 char buf[128];
 const size_t bufsz = sizeof(buf);

 pos += scnprintf(buf + pos, bufsz - pos, "ucode trace timer is %s\n",
   priv->event_log.ucode_trace ? "On" : "Off");
 pos += scnprintf(buf + pos, bufsz - pos, "non_wraps_count:\t\t %u\n",
   priv->event_log.non_wraps_count);
 pos += scnprintf(buf + pos, bufsz - pos, "wraps_once_count:\t\t %u\n",
   priv->event_log.wraps_once_count);
 pos += scnprintf(buf + pos, bufsz - pos, "wraps_more_count:\t\t %u\n",
   priv->event_log.wraps_more_count);

 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
}

static ssize_t iwl_dbgfs_ucode_tracing_write(struct file *file,
      const char __user *user_buf,
      size_t count, loff_t *ppos)
{
 struct iwl_priv *priv = file->private_data;
 char buf[8];
 int buf_size;
 int trace;

 memset(buf, 0, sizeof(buf));
 buf_size = min(count, sizeof(buf) -  1);
 if (copy_from_user(buf, user_buf, buf_size))
  return -EFAULT;
 if (sscanf(buf, "%d", &trace) != 1)
  return -EFAULT;

 if (trace) {
  priv->event_log.ucode_trace = true;
  if (iwl_is_alive(priv)) {
   /* start collecting data now */
   mod_timer(&priv->ucode_trace, jiffies);
  }
 } else {
  priv->event_log.ucode_trace = false;
  timer_delete_sync(&priv->ucode_trace);
 }

 return count;
}

static ssize_t iwl_dbgfs_rxon_flags_read(struct file *file,
      char __user *user_buf,
      size_t count, loff_t *ppos) {

 struct iwl_priv *priv = file->private_data;
 int len = 0;
 char buf[20];

 len = sprintf(buf, "0x%04X\n",
  le32_to_cpu(priv->contexts[IWL_RXON_CTX_BSS].active.flags));
 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}

static ssize_t iwl_dbgfs_rxon_filter_flags_read(struct file *file,
      char __user *user_buf,
      size_t count, loff_t *ppos) {

 struct iwl_priv *priv = file->private_data;
 int len = 0;
 char buf[20];

 len = sprintf(buf, "0x%04X\n",
  le32_to_cpu(priv->contexts[IWL_RXON_CTX_BSS].active.filter_flags));
 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}

static ssize_t iwl_dbgfs_missed_beacon_read(struct file *file,
     char __user *user_buf,
     size_t count, loff_t *ppos) {

 struct iwl_priv *priv = file->private_data;
 int pos = 0;
 char buf[12];
 const size_t bufsz = sizeof(buf);

 pos += scnprintf(buf + pos, bufsz - pos, "%d\n",
   priv->missed_beacon_threshold);

 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
}

static ssize_t iwl_dbgfs_missed_beacon_write(struct file *file,
      const char __user *user_buf,
      size_t count, loff_t *ppos)
{
 struct iwl_priv *priv = file->private_data;
 char buf[8];
 int buf_size;
 int missed;

 memset(buf, 0, sizeof(buf));
 buf_size = min(count, sizeof(buf) -  1);
 if (copy_from_user(buf, user_buf, buf_size))
  return -EFAULT;
 if (sscanf(buf, "%d", &missed) != 1)
  return -EINVAL;

 if (missed < IWL_MISSED_BEACON_THRESHOLD_MIN ||
     missed > IWL_MISSED_BEACON_THRESHOLD_MAX)
  priv->missed_beacon_threshold =
   IWL_MISSED_BEACON_THRESHOLD_DEF;
--> --------------------

--> maximum size reached

--> --------------------