root/drivers/net/wireless/intel/iwlwifi/dvm/debugfs.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;
        else
                priv->missed_beacon_threshold = missed;

        return count;
}

static ssize_t iwl_dbgfs_plcp_delta_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, "%u\n",
                        priv->plcp_delta_threshold);

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

static ssize_t iwl_dbgfs_plcp_delta_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 plcp;

        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", &plcp) != 1)
                return -EINVAL;
        if ((plcp < IWL_MAX_PLCP_ERR_THRESHOLD_MIN) ||
                (plcp > IWL_MAX_PLCP_ERR_THRESHOLD_MAX))
                priv->plcp_delta_threshold =
                        IWL_MAX_PLCP_ERR_THRESHOLD_DISABLE;
        else
                priv->plcp_delta_threshold = plcp;
        return count;
}

static ssize_t iwl_dbgfs_rf_reset_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[300];
        const size_t bufsz = sizeof(buf);
        struct iwl_rf_reset *rf_reset = &priv->rf_reset;

        pos += scnprintf(buf + pos, bufsz - pos,
                        "RF reset statistics\n");
        pos += scnprintf(buf + pos, bufsz - pos,
                        "\tnumber of reset request: %d\n",
                        rf_reset->reset_request_count);
        pos += scnprintf(buf + pos, bufsz - pos,
                        "\tnumber of reset request success: %d\n",
                        rf_reset->reset_success_count);
        pos += scnprintf(buf + pos, bufsz - pos,
                        "\tnumber of reset request reject: %d\n",
                        rf_reset->reset_reject_count);

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

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

        struct iwl_priv *priv = file->private_data;
        int ret;

        ret = iwl_force_rf_reset(priv, true);
        return ret ? ret : count;
}

static ssize_t iwl_dbgfs_txfifo_flush_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 flush;

        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", &flush) != 1)
                return -EINVAL;

        if (iwl_is_rfkill(priv))
                return -EFAULT;

        iwlagn_dev_txfifo_flush(priv);

        return count;
}

static ssize_t iwl_dbgfs_bt_traffic_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[200];
        const size_t bufsz = sizeof(buf);

        if (!priv->bt_enable_flag) {
                pos += scnprintf(buf + pos, bufsz - pos, "BT coex disabled\n");
                return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
        }
        pos += scnprintf(buf + pos, bufsz - pos, "BT enable flag: 0x%x\n",
                priv->bt_enable_flag);
        pos += scnprintf(buf + pos, bufsz - pos, "BT in %s mode\n",
                priv->bt_full_concurrent ? "full concurrency" : "3-wire");
        pos += scnprintf(buf + pos, bufsz - pos, "BT status: %s, "
                         "last traffic notif: %d\n",
                priv->bt_status ? "On" : "Off", priv->last_bt_traffic_load);
        pos += scnprintf(buf + pos, bufsz - pos, "ch_announcement: %d, "
                         "kill_ack_mask: %x, kill_cts_mask: %x\n",
                priv->bt_ch_announce, priv->kill_ack_mask,
                priv->kill_cts_mask);

        pos += scnprintf(buf + pos, bufsz - pos, "bluetooth traffic load: ");
        switch (priv->bt_traffic_load) {
        case IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS:
                pos += scnprintf(buf + pos, bufsz - pos, "Continuous\n");
                break;
        case IWL_BT_COEX_TRAFFIC_LOAD_HIGH:
                pos += scnprintf(buf + pos, bufsz - pos, "High\n");
                break;
        case IWL_BT_COEX_TRAFFIC_LOAD_LOW:
                pos += scnprintf(buf + pos, bufsz - pos, "Low\n");
                break;
        case IWL_BT_COEX_TRAFFIC_LOAD_NONE:
        default:
                pos += scnprintf(buf + pos, bufsz - pos, "None\n");
                break;
        }

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

static ssize_t iwl_dbgfs_protection_mode_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[40];
        const size_t bufsz = sizeof(buf);

        /* HT devices also have at least one HT40 band */
        if (priv->cfg->ht_params.ht40_bands)
                pos += scnprintf(buf + pos, bufsz - pos,
                         "use %s for aggregation\n",
                         (priv->hw_params.use_rts_for_aggregation) ?
                                "rts/cts" : "cts-to-self");
        else
                pos += scnprintf(buf + pos, bufsz - pos, "N/A");

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

static ssize_t iwl_dbgfs_protection_mode_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 rts;

        /* HT devices also have at least one HT40 band */
        if (!priv->cfg->ht_params.ht40_bands)
                return -EINVAL;

        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", &rts) != 1)
                return -EINVAL;
        if (rts)
                priv->hw_params.use_rts_for_aggregation = true;
        else
                priv->hw_params.use_rts_for_aggregation = false;
        return count;
}

static int iwl_cmd_echo_test(struct iwl_priv *priv)
{
        int ret;
        struct iwl_host_cmd cmd = {
                .id = REPLY_ECHO,
                .len = { 0 },
        };

        ret = iwl_dvm_send_cmd(priv, &cmd);
        if (ret)
                IWL_ERR(priv, "echo testing fail: 0X%x\n", ret);
        else
                IWL_DEBUG_INFO(priv, "echo testing pass\n");
        return ret;
}

static ssize_t iwl_dbgfs_echo_test_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;

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

        iwl_cmd_echo_test(priv);
        return count;
}

#ifdef CONFIG_IWLWIFI_DEBUG
static ssize_t iwl_dbgfs_log_event_read(struct file *file,
                                         char __user *user_buf,
                                         size_t count, loff_t *ppos)
{
        struct iwl_priv *priv = file->private_data;
        char *buf = NULL;
        ssize_t ret;

        ret = iwl_dump_nic_event_log(priv, true, &buf);
        if (ret > 0)
                ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
        kfree(buf);
        return ret;
}

static ssize_t iwl_dbgfs_log_event_write(struct file *file,
                                        const char __user *user_buf,
                                        size_t count, loff_t *ppos)
{
        struct iwl_priv *priv = file->private_data;
        u32 event_log_flag;
        char buf[8];
        int buf_size;

        /* check that the interface is up */
        if (!iwl_is_ready(priv))
                return -EAGAIN;

        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, "%u", &event_log_flag) != 1)
                return -EFAULT;
        if (event_log_flag == 1)
                iwl_dump_nic_event_log(priv, true, NULL);

        return count;
}
#endif

static ssize_t iwl_dbgfs_calib_disabled_read(struct file *file,
                                         char __user *user_buf,
                                         size_t count, loff_t *ppos)
{
        struct iwl_priv *priv = file->private_data;
        char buf[120];
        int pos = 0;
        const size_t bufsz = sizeof(buf);

        pos += scnprintf(buf + pos, bufsz - pos,
                         "Sensitivity calibrations %s\n",
                         (priv->calib_disabled &
                                        IWL_SENSITIVITY_CALIB_DISABLED) ?
                         "DISABLED" : "ENABLED");
        pos += scnprintf(buf + pos, bufsz - pos,
                         "Chain noise calibrations %s\n",
                         (priv->calib_disabled &
                                        IWL_CHAIN_NOISE_CALIB_DISABLED) ?
                         "DISABLED" : "ENABLED");
        pos += scnprintf(buf + pos, bufsz - pos,
                         "Tx power calibrations %s\n",
                         (priv->calib_disabled &
                                        IWL_TX_POWER_CALIB_DISABLED) ?
                         "DISABLED" : "ENABLED");

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

static ssize_t iwl_dbgfs_calib_disabled_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];
        u32 calib_disabled;
        int buf_size;

        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", &calib_disabled) != 1)
                return -EFAULT;

        priv->calib_disabled = calib_disabled;

        return count;
}

static ssize_t iwl_dbgfs_fw_restart_write(struct file *file,
                                          const char __user *user_buf,
                                          size_t count, loff_t *ppos)
{
        struct iwl_priv *priv = file->private_data;
        bool fw_restart = iwlwifi_mod_params.fw_restart;
        int __maybe_unused ret;

        iwlwifi_mod_params.fw_restart = true;

        mutex_lock(&priv->mutex);

        /* take the return value to make compiler happy - it will fail anyway */
        ret = iwl_dvm_send_cmd_pdu(priv, REPLY_ERROR, 0, 0, NULL);

        mutex_unlock(&priv->mutex);

        iwlwifi_mod_params.fw_restart = fw_restart;

        return count;
}

DEBUGFS_READ_FILE_OPS(ucode_rx_stats);
DEBUGFS_READ_FILE_OPS(ucode_tx_stats);
DEBUGFS_READ_FILE_OPS(ucode_general_stats);
DEBUGFS_READ_FILE_OPS(sensitivity);
DEBUGFS_READ_FILE_OPS(chain_noise);
DEBUGFS_READ_FILE_OPS(power_save_status);
DEBUGFS_WRITE_FILE_OPS(clear_ucode_statistics);
DEBUGFS_READ_WRITE_FILE_OPS(ucode_tracing);
DEBUGFS_READ_WRITE_FILE_OPS(missed_beacon);
DEBUGFS_READ_WRITE_FILE_OPS(plcp_delta);
DEBUGFS_READ_WRITE_FILE_OPS(rf_reset);
DEBUGFS_READ_FILE_OPS(rxon_flags);
DEBUGFS_READ_FILE_OPS(rxon_filter_flags);
DEBUGFS_WRITE_FILE_OPS(txfifo_flush);
DEBUGFS_READ_FILE_OPS(ucode_bt_stats);
DEBUGFS_READ_FILE_OPS(bt_traffic);
DEBUGFS_READ_WRITE_FILE_OPS(protection_mode);
DEBUGFS_READ_FILE_OPS(reply_tx_error);
DEBUGFS_WRITE_FILE_OPS(echo_test);
DEBUGFS_WRITE_FILE_OPS(fw_restart);
#ifdef CONFIG_IWLWIFI_DEBUG
DEBUGFS_READ_WRITE_FILE_OPS(log_event);
#endif
DEBUGFS_READ_WRITE_FILE_OPS(calib_disabled);

/*
 * Create the debugfs files and directories
 *
 */
void iwl_dbgfs_register(struct iwl_priv *priv, struct dentry *dbgfs_dir)
{
        struct dentry *dir_data, *dir_rf, *dir_debug;

        priv->debugfs_dir = dbgfs_dir;

        dir_data = debugfs_create_dir("data", dbgfs_dir);
        dir_rf = debugfs_create_dir("rf", dbgfs_dir);
        dir_debug = debugfs_create_dir("debug", dbgfs_dir);

        DEBUGFS_ADD_FILE(nvm, dir_data, 0400);
        DEBUGFS_ADD_FILE(sram, dir_data, 0600);
        DEBUGFS_ADD_FILE(wowlan_sram, dir_data, 0400);
        DEBUGFS_ADD_FILE(stations, dir_data, 0400);
        DEBUGFS_ADD_FILE(channels, dir_data, 0400);
        DEBUGFS_ADD_FILE(status, dir_data, 0400);
        DEBUGFS_ADD_FILE(rx_handlers, dir_data, 0600);
        DEBUGFS_ADD_FILE(qos, dir_data, 0400);
        DEBUGFS_ADD_FILE(sleep_level_override, dir_data, 0600);
        DEBUGFS_ADD_FILE(current_sleep_command, dir_data, 0400);
        DEBUGFS_ADD_FILE(thermal_throttling, dir_data, 0400);
        DEBUGFS_ADD_FILE(disable_ht40, dir_data, 0600);
        DEBUGFS_ADD_FILE(temperature, dir_data, 0400);

        DEBUGFS_ADD_FILE(power_save_status, dir_debug, 0400);
        DEBUGFS_ADD_FILE(clear_ucode_statistics, dir_debug, 0200);
        DEBUGFS_ADD_FILE(missed_beacon, dir_debug, 0200);
        DEBUGFS_ADD_FILE(plcp_delta, dir_debug, 0600);
        DEBUGFS_ADD_FILE(rf_reset, dir_debug, 0600);
        DEBUGFS_ADD_FILE(ucode_rx_stats, dir_debug, 0400);
        DEBUGFS_ADD_FILE(ucode_tx_stats, dir_debug, 0400);
        DEBUGFS_ADD_FILE(ucode_general_stats, dir_debug, 0400);
        DEBUGFS_ADD_FILE(txfifo_flush, dir_debug, 0200);
        DEBUGFS_ADD_FILE(protection_mode, dir_debug, 0600);
        DEBUGFS_ADD_FILE(sensitivity, dir_debug, 0400);
        DEBUGFS_ADD_FILE(chain_noise, dir_debug, 0400);
        DEBUGFS_ADD_FILE(ucode_tracing, dir_debug, 0600);
        DEBUGFS_ADD_FILE(ucode_bt_stats, dir_debug, 0400);
        DEBUGFS_ADD_FILE(reply_tx_error, dir_debug, 0400);
        DEBUGFS_ADD_FILE(rxon_flags, dir_debug, 0200);
        DEBUGFS_ADD_FILE(rxon_filter_flags, dir_debug, 0200);
        DEBUGFS_ADD_FILE(echo_test, dir_debug, 0200);
        DEBUGFS_ADD_FILE(fw_restart, dir_debug, 0200);
#ifdef CONFIG_IWLWIFI_DEBUG
        DEBUGFS_ADD_FILE(log_event, dir_debug, 0600);
#endif

        if (iwl_advanced_bt_coexist(priv))
                DEBUGFS_ADD_FILE(bt_traffic, dir_debug, 0400);

        /* Calibrations disabled/enabled status*/
        DEBUGFS_ADD_FILE(calib_disabled, dir_rf, 0600);

        /*
         * Create a symlink with mac80211. This is not very robust, as it does
         * not remove the symlink created. The implicit assumption is that
         * when the opmode exits, mac80211 will also exit, and will remove
         * this symlink as part of its cleanup.
         */
        if (priv->mac80211_registered) {
                char buf[100];
                struct dentry *mac80211_dir, *dev_dir;

                dev_dir = dbgfs_dir->d_parent;
                mac80211_dir = priv->hw->wiphy->debugfsdir;

                snprintf(buf, 100, "../../%pd2", dev_dir);

                debugfs_create_symlink("iwlwifi", mac80211_dir, buf);
        }
}