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linux-zen-server/drivers/net/wireless/intel/iwlegacy/debug.c

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Initial commit
2023-08-30 17:53:23 +02:00
// SPDX-License-Identifier: GPL-2.0-only
/******************************************************************************
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
*
* Contact Information:
* Intel Linux Wireless <ilw@linux.intel.com>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*****************************************************************************/
#include <linux/ieee80211.h>
#include <linux/export.h>
#include <net/mac80211.h>
#include "common.h"
static void
il_clear_traffic_stats(struct il_priv *il)
{
memset(&il->tx_stats, 0, sizeof(struct traffic_stats));
memset(&il->rx_stats, 0, sizeof(struct traffic_stats));
}
/*
* il_update_stats function record all the MGMT, CTRL and DATA pkt for
* both TX and Rx . Use debugfs to display the rx/rx_stats
*/
void
il_update_stats(struct il_priv *il, bool is_tx, __le16 fc, u16 len)
{
struct traffic_stats *stats;
if (is_tx)
stats = &il->tx_stats;
else
stats = &il->rx_stats;
if (ieee80211_is_mgmt(fc)) {
switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
stats->mgmt[MANAGEMENT_ASSOC_REQ]++;
break;
case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP):
stats->mgmt[MANAGEMENT_ASSOC_RESP]++;
break;
case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
stats->mgmt[MANAGEMENT_REASSOC_REQ]++;
break;
case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP):
stats->mgmt[MANAGEMENT_REASSOC_RESP]++;
break;
case cpu_to_le16(IEEE80211_STYPE_PROBE_REQ):
stats->mgmt[MANAGEMENT_PROBE_REQ]++;
break;
case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP):
stats->mgmt[MANAGEMENT_PROBE_RESP]++;
break;
case cpu_to_le16(IEEE80211_STYPE_BEACON):
stats->mgmt[MANAGEMENT_BEACON]++;
break;
case cpu_to_le16(IEEE80211_STYPE_ATIM):
stats->mgmt[MANAGEMENT_ATIM]++;
break;
case cpu_to_le16(IEEE80211_STYPE_DISASSOC):
stats->mgmt[MANAGEMENT_DISASSOC]++;
break;
case cpu_to_le16(IEEE80211_STYPE_AUTH):
stats->mgmt[MANAGEMENT_AUTH]++;
break;
case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
stats->mgmt[MANAGEMENT_DEAUTH]++;
break;
case cpu_to_le16(IEEE80211_STYPE_ACTION):
stats->mgmt[MANAGEMENT_ACTION]++;
break;
}
} else if (ieee80211_is_ctl(fc)) {
switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
case cpu_to_le16(IEEE80211_STYPE_BACK_REQ):
stats->ctrl[CONTROL_BACK_REQ]++;
break;
case cpu_to_le16(IEEE80211_STYPE_BACK):
stats->ctrl[CONTROL_BACK]++;
break;
case cpu_to_le16(IEEE80211_STYPE_PSPOLL):
stats->ctrl[CONTROL_PSPOLL]++;
break;
case cpu_to_le16(IEEE80211_STYPE_RTS):
stats->ctrl[CONTROL_RTS]++;
break;
case cpu_to_le16(IEEE80211_STYPE_CTS):
stats->ctrl[CONTROL_CTS]++;
break;
case cpu_to_le16(IEEE80211_STYPE_ACK):
stats->ctrl[CONTROL_ACK]++;
break;
case cpu_to_le16(IEEE80211_STYPE_CFEND):
stats->ctrl[CONTROL_CFEND]++;
break;
case cpu_to_le16(IEEE80211_STYPE_CFENDACK):
stats->ctrl[CONTROL_CFENDACK]++;
break;
}
} else {
/* data */
stats->data_cnt++;
stats->data_bytes += len;
}
}
EXPORT_SYMBOL(il_update_stats);
/* create and remove of files */
#define DEBUGFS_ADD_FILE(name, parent, mode) do { \
debugfs_create_file(#name, mode, parent, il, \
&il_dbgfs_##name##_ops); \
} while (0)
#define DEBUGFS_ADD_BOOL(name, parent, ptr) do { \
debugfs_create_bool(#name, 0600, parent, ptr); \
} while (0)
/* file operation */
#define DEBUGFS_READ_FUNC(name) \
static ssize_t il_dbgfs_##name##_read(struct file *file, \
char __user *user_buf, \
size_t count, loff_t *ppos);
#define DEBUGFS_WRITE_FUNC(name) \
static ssize_t il_dbgfs_##name##_write(struct file *file, \
const char __user *user_buf, \
size_t count, loff_t *ppos);
#define DEBUGFS_READ_FILE_OPS(name) \
DEBUGFS_READ_FUNC(name); \
static const struct file_operations il_dbgfs_##name##_ops = { \
.read = il_dbgfs_##name##_read, \
.open = simple_open, \
.llseek = generic_file_llseek, \
};
#define DEBUGFS_WRITE_FILE_OPS(name) \
DEBUGFS_WRITE_FUNC(name); \
static const struct file_operations il_dbgfs_##name##_ops = { \
.write = il_dbgfs_##name##_write, \
.open = simple_open, \
.llseek = generic_file_llseek, \
};
#define DEBUGFS_READ_WRITE_FILE_OPS(name) \
DEBUGFS_READ_FUNC(name); \
DEBUGFS_WRITE_FUNC(name); \
static const struct file_operations il_dbgfs_##name##_ops = { \
.write = il_dbgfs_##name##_write, \
.read = il_dbgfs_##name##_read, \
.open = simple_open, \
.llseek = generic_file_llseek, \
};
static const char *
il_get_mgmt_string(int cmd)
{
switch (cmd) {
IL_CMD(MANAGEMENT_ASSOC_REQ);
IL_CMD(MANAGEMENT_ASSOC_RESP);
IL_CMD(MANAGEMENT_REASSOC_REQ);
IL_CMD(MANAGEMENT_REASSOC_RESP);
IL_CMD(MANAGEMENT_PROBE_REQ);
IL_CMD(MANAGEMENT_PROBE_RESP);
IL_CMD(MANAGEMENT_BEACON);
IL_CMD(MANAGEMENT_ATIM);
IL_CMD(MANAGEMENT_DISASSOC);
IL_CMD(MANAGEMENT_AUTH);
IL_CMD(MANAGEMENT_DEAUTH);
IL_CMD(MANAGEMENT_ACTION);
default:
return "UNKNOWN";
}
}
static const char *
il_get_ctrl_string(int cmd)
{
switch (cmd) {
IL_CMD(CONTROL_BACK_REQ);
IL_CMD(CONTROL_BACK);
IL_CMD(CONTROL_PSPOLL);
IL_CMD(CONTROL_RTS);
IL_CMD(CONTROL_CTS);
IL_CMD(CONTROL_ACK);
IL_CMD(CONTROL_CFEND);
IL_CMD(CONTROL_CFENDACK);
default:
return "UNKNOWN";
}
}
static ssize_t
il_dbgfs_tx_stats_read(struct file *file, char __user *user_buf, size_t count,
loff_t *ppos)
{
struct il_priv *il = file->private_data;
char *buf;
int pos = 0;
int cnt;
ssize_t ret;
const size_t bufsz =
100 + sizeof(char) * 50 * (MANAGEMENT_MAX + CONTROL_MAX);
buf = kzalloc(bufsz, GFP_KERNEL);
if (!buf)
return -ENOMEM;
pos += scnprintf(buf + pos, bufsz - pos, "Management:\n");
for (cnt = 0; cnt < MANAGEMENT_MAX; cnt++) {
pos +=
scnprintf(buf + pos, bufsz - pos, "\t%25s\t\t: %u\n",
il_get_mgmt_string(cnt), il->tx_stats.mgmt[cnt]);
}
pos += scnprintf(buf + pos, bufsz - pos, "Control\n");
for (cnt = 0; cnt < CONTROL_MAX; cnt++) {
pos +=
scnprintf(buf + pos, bufsz - pos, "\t%25s\t\t: %u\n",
il_get_ctrl_string(cnt), il->tx_stats.ctrl[cnt]);
}
pos += scnprintf(buf + pos, bufsz - pos, "Data:\n");
pos +=
scnprintf(buf + pos, bufsz - pos, "\tcnt: %u\n",
il->tx_stats.data_cnt);
pos +=
scnprintf(buf + pos, bufsz - pos, "\tbytes: %llu\n",
il->tx_stats.data_bytes);
ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
kfree(buf);
return ret;
}
static ssize_t
il_dbgfs_clear_traffic_stats_write(struct file *file,
const char __user *user_buf, size_t count,
loff_t *ppos)
{
struct il_priv *il = file->private_data;
u32 clear_flag;
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;
if (sscanf(buf, "%x", &clear_flag) != 1)
return -EFAULT;
il_clear_traffic_stats(il);
return count;
}
static ssize_t
il_dbgfs_rx_stats_read(struct file *file, char __user *user_buf, size_t count,
loff_t *ppos)
{
struct il_priv *il = file->private_data;
char *buf;
int pos = 0;
int cnt;
ssize_t ret;
const size_t bufsz =
100 + sizeof(char) * 50 * (MANAGEMENT_MAX + CONTROL_MAX);
buf = kzalloc(bufsz, GFP_KERNEL);
if (!buf)
return -ENOMEM;
pos += scnprintf(buf + pos, bufsz - pos, "Management:\n");
for (cnt = 0; cnt < MANAGEMENT_MAX; cnt++) {
pos +=
scnprintf(buf + pos, bufsz - pos, "\t%25s\t\t: %u\n",
il_get_mgmt_string(cnt), il->rx_stats.mgmt[cnt]);
}
pos += scnprintf(buf + pos, bufsz - pos, "Control:\n");
for (cnt = 0; cnt < CONTROL_MAX; cnt++) {
pos +=
scnprintf(buf + pos, bufsz - pos, "\t%25s\t\t: %u\n",
il_get_ctrl_string(cnt), il->rx_stats.ctrl[cnt]);
}
pos += scnprintf(buf + pos, bufsz - pos, "Data:\n");
pos +=
scnprintf(buf + pos, bufsz - pos, "\tcnt: %u\n",
il->rx_stats.data_cnt);
pos +=
scnprintf(buf + pos, bufsz - pos, "\tbytes: %llu\n",
il->rx_stats.data_bytes);
ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
kfree(buf);
return ret;
}
#define BYTE1_MASK 0x000000ff;
#define BYTE2_MASK 0x0000ffff;
#define BYTE3_MASK 0x00ffffff;
static ssize_t
il_dbgfs_sram_read(struct file *file, char __user *user_buf, size_t count,
loff_t *ppos)
{
u32 val;
char *buf;
ssize_t ret;
int i;
int pos = 0;
struct il_priv *il = file->private_data;
size_t bufsz;
/* default is to dump the entire data segment */
if (!il->dbgfs_sram_offset && !il->dbgfs_sram_len) {
il->dbgfs_sram_offset = 0x800000;
if (il->ucode_type == UCODE_INIT)
il->dbgfs_sram_len = il->ucode_init_data.len;
else
il->dbgfs_sram_len = il->ucode_data.len;
}
bufsz = 30 + il->dbgfs_sram_len * sizeof(char) * 10;
buf = kmalloc(bufsz, GFP_KERNEL);
if (!buf)
return -ENOMEM;
pos +=
scnprintf(buf + pos, bufsz - pos, "sram_len: 0x%x\n",
il->dbgfs_sram_len);
pos +=
scnprintf(buf + pos, bufsz - pos, "sram_offset: 0x%x\n",
il->dbgfs_sram_offset);
for (i = il->dbgfs_sram_len; i > 0; i -= 4) {
val =
il_read_targ_mem(il,
il->dbgfs_sram_offset +
il->dbgfs_sram_len - i);
if (i < 4) {
switch (i) {
case 1:
val &= BYTE1_MASK;
break;
case 2:
val &= BYTE2_MASK;
break;
case 3:
val &= BYTE3_MASK;
break;
}
}
if (!(i % 16))
pos += scnprintf(buf + pos, bufsz - pos, "\n");
pos += scnprintf(buf + pos, bufsz - pos, "0x%08x ", val);
}
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
il_dbgfs_sram_write(struct file *file, const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct il_priv *il = 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) {
il->dbgfs_sram_offset = offset;
il->dbgfs_sram_len = len;
} else {
il->dbgfs_sram_offset = 0;
il->dbgfs_sram_len = 0;
}
return count;
}
static ssize_t
il_dbgfs_stations_read(struct file *file, char __user *user_buf, size_t count,
loff_t *ppos)
{
struct il_priv *il = file->private_data;
struct il_station_entry *station;
int max_sta = il->hw_params.max_stations;
char *buf;
int i, j, pos = 0;
ssize_t ret;
/* Add 30 for initial string */
const size_t bufsz = 30 + sizeof(char) * 500 * (il->num_stations);
buf = kmalloc(bufsz, GFP_KERNEL);
if (!buf)
return -ENOMEM;
pos +=
scnprintf(buf + pos, bufsz - pos, "num of stations: %d\n\n",
il->num_stations);
for (i = 0; i < max_sta; i++) {
station = &il->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\tseq_num\ttxq_id\tframes\ttfds\t");
pos +=
scnprintf(buf + pos, bufsz - pos,
"start_idx\tbitmap\t\t\trate_n_flags\n");
for (j = 0; j < MAX_TID_COUNT; j++) {
pos +=
scnprintf(buf + pos, bufsz - pos,
"%d:\t%#x\t%#x\t%u\t%u\t%u\t\t%#.16llx\t%#x",
j, station->tid[j].seq_number,
station->tid[j].agg.txq_id,
station->tid[j].agg.frame_count,
station->tid[j].tfds_in_queue,
station->tid[j].agg.start_idx,
station->tid[j].agg.bitmap,
station->tid[j].agg.rate_n_flags);
if (station->tid[j].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
il_dbgfs_nvm_read(struct file *file, char __user *user_buf, size_t count,
loff_t *ppos)
{
ssize_t ret;
struct il_priv *il = file->private_data;
int pos = 0, ofs = 0, buf_size = 0;
const u8 *ptr;
char *buf;
u16 eeprom_ver;
size_t eeprom_len = il->cfg->eeprom_size;
buf_size = 4 * eeprom_len + 256;
if (eeprom_len % 16) {
IL_ERR("NVM size is not multiple of 16.\n");
return -ENODATA;
}
ptr = il->eeprom;
if (!ptr) {
IL_ERR("Invalid EEPROM memory\n");
return -ENOMEM;
}
/* 4 characters for byte 0xYY */
buf = kzalloc(buf_size, GFP_KERNEL);
if (!buf) {
IL_ERR("Can not allocate Buffer\n");
return -ENOMEM;
}
eeprom_ver = il_eeprom_query16(il, EEPROM_VERSION);
pos +=
scnprintf(buf + pos, buf_size - pos, "EEPROM " "version: 0x%x\n",
eeprom_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
il_dbgfs_channels_read(struct file *file, char __user *user_buf, size_t count,
loff_t *ppos)
{
struct il_priv *il = 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;
if (!test_bit(S_GEO_CONFIGURED, &il->status))
return -EAGAIN;
buf = kzalloc(bufsz, GFP_KERNEL);
if (!buf) {
IL_ERR("Can not allocate Buffer\n");
return -ENOMEM;
}
supp_band = il_get_hw_mode(il, 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 = il_get_hw_mode(il, 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
il_dbgfs_status_read(struct file *file, char __user *user_buf, size_t count,
loff_t *ppos)
{
struct il_priv *il = file->private_data;
char buf[512];
int pos = 0;
const size_t bufsz = sizeof(buf);
pos +=
scnprintf(buf + pos, bufsz - pos, "S_HCMD_ACTIVE:\t %d\n",
test_bit(S_HCMD_ACTIVE, &il->status));
pos +=
scnprintf(buf + pos, bufsz - pos, "S_INT_ENABLED:\t %d\n",
test_bit(S_INT_ENABLED, &il->status));
pos +=
scnprintf(buf + pos, bufsz - pos, "S_RFKILL:\t %d\n",
test_bit(S_RFKILL, &il->status));
pos +=
scnprintf(buf + pos, bufsz - pos, "S_CT_KILL:\t\t %d\n",
test_bit(S_CT_KILL, &il->status));
pos +=
scnprintf(buf + pos, bufsz - pos, "S_INIT:\t\t %d\n",
test_bit(S_INIT, &il->status));
pos +=
scnprintf(buf + pos, bufsz - pos, "S_ALIVE:\t\t %d\n",
test_bit(S_ALIVE, &il->status));
pos +=
scnprintf(buf + pos, bufsz - pos, "S_READY:\t\t %d\n",
test_bit(S_READY, &il->status));
pos +=
scnprintf(buf + pos, bufsz - pos, "S_TEMPERATURE:\t %d\n",
test_bit(S_TEMPERATURE, &il->status));
pos +=
scnprintf(buf + pos, bufsz - pos, "S_GEO_CONFIGURED:\t %d\n",
test_bit(S_GEO_CONFIGURED, &il->status));
pos +=
scnprintf(buf + pos, bufsz - pos, "S_EXIT_PENDING:\t %d\n",
test_bit(S_EXIT_PENDING, &il->status));
pos +=
scnprintf(buf + pos, bufsz - pos, "S_STATS:\t %d\n",
test_bit(S_STATS, &il->status));
pos +=
scnprintf(buf + pos, bufsz - pos, "S_SCANNING:\t %d\n",
test_bit(S_SCANNING, &il->status));
pos +=
scnprintf(buf + pos, bufsz - pos, "S_SCAN_ABORTING:\t %d\n",
test_bit(S_SCAN_ABORTING, &il->status));
pos +=
scnprintf(buf + pos, bufsz - pos, "S_SCAN_HW:\t\t %d\n",
test_bit(S_SCAN_HW, &il->status));
pos +=
scnprintf(buf + pos, bufsz - pos, "S_POWER_PMI:\t %d\n",
test_bit(S_POWER_PMI, &il->status));
pos +=
scnprintf(buf + pos, bufsz - pos, "S_FW_ERROR:\t %d\n",
test_bit(S_FW_ERROR, &il->status));
return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
}
static ssize_t
il_dbgfs_interrupt_read(struct file *file, char __user *user_buf, size_t count,
loff_t *ppos)
{
struct il_priv *il = 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) {
IL_ERR("Can not allocate Buffer\n");
return -ENOMEM;
}
pos +=
scnprintf(buf + pos, bufsz - pos, "Interrupt Statistics Report:\n");
pos +=
scnprintf(buf + pos, bufsz - pos, "HW Error:\t\t\t %u\n",
il->isr_stats.hw);
pos +=
scnprintf(buf + pos, bufsz - pos, "SW Error:\t\t\t %u\n",
il->isr_stats.sw);
if (il->isr_stats.sw || il->isr_stats.hw) {
pos +=
scnprintf(buf + pos, bufsz - pos,
"\tLast Restarting Code: 0x%X\n",
il->isr_stats.err_code);
}
#ifdef CONFIG_IWLEGACY_DEBUG
pos +=
scnprintf(buf + pos, bufsz - pos, "Frame transmitted:\t\t %u\n",
il->isr_stats.sch);
pos +=
scnprintf(buf + pos, bufsz - pos, "Alive interrupt:\t\t %u\n",
il->isr_stats.alive);
#endif
pos +=
scnprintf(buf + pos, bufsz - pos,
"HW RF KILL switch toggled:\t %u\n",
il->isr_stats.rfkill);
pos +=
scnprintf(buf + pos, bufsz - pos, "CT KILL:\t\t\t %u\n",
il->isr_stats.ctkill);
pos +=
scnprintf(buf + pos, bufsz - pos, "Wakeup Interrupt:\t\t %u\n",
il->isr_stats.wakeup);
pos +=
scnprintf(buf + pos, bufsz - pos, "Rx command responses:\t\t %u\n",
il->isr_stats.rx);
for (cnt = 0; cnt < IL_CN_MAX; cnt++) {
if (il->isr_stats.handlers[cnt] > 0)
pos +=
scnprintf(buf + pos, bufsz - pos,
"\tRx handler[%36s]:\t\t %u\n",
il_get_cmd_string(cnt),
il->isr_stats.handlers[cnt]);
}
pos +=
scnprintf(buf + pos, bufsz - pos, "Tx/FH interrupt:\t\t %u\n",
il->isr_stats.tx);
pos +=
scnprintf(buf + pos, bufsz - pos, "Unexpected INTA:\t\t %u\n",
il->isr_stats.unhandled);
ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
kfree(buf);
return ret;
}
static ssize_t
il_dbgfs_interrupt_write(struct file *file, const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct il_priv *il = 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)
il_clear_isr_stats(il);
return count;
}
static ssize_t
il_dbgfs_qos_read(struct file *file, char __user *user_buf, size_t count,
loff_t *ppos)
{
struct il_priv *il = file->private_data;
int pos = 0, i;
char buf[256];
const size_t bufsz = sizeof(buf);
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,
il->qos_data.def_qos_parm.ac[i].cw_min,
il->qos_data.def_qos_parm.ac[i].cw_max,
il->qos_data.def_qos_parm.ac[i].aifsn,
il->qos_data.def_qos_parm.ac[i].edca_txop);
}
return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
}
static ssize_t
il_dbgfs_disable_ht40_write(struct file *file, const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct il_priv *il = 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 (!il_is_any_associated(il))
il->disable_ht40 = ht40 ? true : false;
else {
IL_ERR("Sta associated with AP - "
"Change to 40MHz channel support is not allowed\n");
return -EINVAL;
}
return count;
}
static ssize_t
il_dbgfs_disable_ht40_read(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct il_priv *il = 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",
il->disable_ht40 ? "Disabled" : "Enabled");
return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
}
DEBUGFS_READ_WRITE_FILE_OPS(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(interrupt);
DEBUGFS_READ_FILE_OPS(qos);
DEBUGFS_READ_WRITE_FILE_OPS(disable_ht40);
static ssize_t
il_dbgfs_tx_queue_read(struct file *file, char __user *user_buf, size_t count,
loff_t *ppos)
{
struct il_priv *il = file->private_data;
struct il_tx_queue *txq;
struct il_queue *q;
char *buf;
int pos = 0;
int cnt;
int ret;
const size_t bufsz =
sizeof(char) * 64 * il->cfg->num_of_queues;
if (!il->txq) {
IL_ERR("txq not ready\n");
return -EAGAIN;
}
buf = kzalloc(bufsz, GFP_KERNEL);
if (!buf)
return -ENOMEM;
for (cnt = 0; cnt < il->hw_params.max_txq_num; cnt++) {
txq = &il->txq[cnt];
q = &txq->q;
pos +=
scnprintf(buf + pos, bufsz - pos,
"hwq %.2d: read=%u write=%u stop=%d"
" swq_id=%#.2x (ac %d/hwq %d)\n", cnt,
q->read_ptr, q->write_ptr,
!!test_bit(cnt, il->queue_stopped),
txq->swq_id, txq->swq_id & 3,
(txq->swq_id >> 2) & 0x1f);
if (cnt >= 4)
continue;
/* for the ACs, display the stop count too */
pos +=
scnprintf(buf + pos, bufsz - pos,
" stop-count: %d\n",
atomic_read(&il->queue_stop_count[cnt]));
}
ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
kfree(buf);
return ret;
}
static ssize_t
il_dbgfs_rx_queue_read(struct file *file, char __user *user_buf, size_t count,
loff_t *ppos)
{
struct il_priv *il = file->private_data;
struct il_rx_queue *rxq = &il->rxq;
char buf[256];
int pos = 0;
const size_t bufsz = sizeof(buf);
pos += scnprintf(buf + pos, bufsz - pos, "read: %u\n", rxq->read);
pos += scnprintf(buf + pos, bufsz - pos, "write: %u\n", rxq->write);
pos +=
scnprintf(buf + pos, bufsz - pos, "free_count: %u\n",
rxq->free_count);
if (rxq->rb_stts) {
pos +=
scnprintf(buf + pos, bufsz - pos, "closed_rb_num: %u\n",
le16_to_cpu(rxq->rb_stts->
closed_rb_num) & 0x0FFF);
} else {
pos +=
scnprintf(buf + pos, bufsz - pos,
"closed_rb_num: Not Allocated\n");
}
return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
}
static ssize_t
il_dbgfs_ucode_rx_stats_read(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct il_priv *il = file->private_data;
return il->debugfs_ops->rx_stats_read(file, user_buf, count, ppos);
}
static ssize_t
il_dbgfs_ucode_tx_stats_read(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct il_priv *il = file->private_data;
return il->debugfs_ops->tx_stats_read(file, user_buf, count, ppos);
}
static ssize_t
il_dbgfs_ucode_general_stats_read(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct il_priv *il = file->private_data;
return il->debugfs_ops->general_stats_read(file, user_buf, count, ppos);
}
static ssize_t
il_dbgfs_sensitivity_read(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct il_priv *il = file->private_data;
int pos = 0;
int cnt = 0;
char *buf;
int bufsz = sizeof(struct il_sensitivity_data) * 4 + 100;
ssize_t ret;
struct il_sensitivity_data *data;
data = &il->sensitivity_data;
buf = kzalloc(bufsz, GFP_KERNEL);
if (!buf) {
IL_ERR("Can not allocate Buffer\n");
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
il_dbgfs_chain_noise_read(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct il_priv *il = file->private_data;
int pos = 0;
int cnt = 0;
char *buf;
int bufsz = sizeof(struct il_chain_noise_data) * 4 + 100;
ssize_t ret;
struct il_chain_noise_data *data;
data = &il->chain_noise_data;
buf = kzalloc(bufsz, GFP_KERNEL);
if (!buf) {
IL_ERR("Can not allocate Buffer\n");
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
il_dbgfs_power_save_status_read(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct il_priv *il = file->private_data;
char buf[60];
int pos = 0;
const size_t bufsz = sizeof(buf);
u32 pwrsave_status;
pwrsave_status =
_il_rd(il, 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
il_dbgfs_clear_ucode_stats_write(struct file *file,
const char __user *user_buf, size_t count,
loff_t *ppos)
{
struct il_priv *il = 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 stats information */
mutex_lock(&il->mutex);
il_send_stats_request(il, CMD_SYNC, true);
mutex_unlock(&il->mutex);
return count;
}
static ssize_t
il_dbgfs_rxon_flags_read(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct il_priv *il = file->private_data;
int len = 0;
char buf[20];
len = sprintf(buf, "0x%04X\n", le32_to_cpu(il->active.flags));
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}
static ssize_t
il_dbgfs_rxon_filter_flags_read(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct il_priv *il = file->private_data;
int len = 0;
char buf[20];
len =
sprintf(buf, "0x%04X\n", le32_to_cpu(il->active.filter_flags));
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}
static ssize_t
il_dbgfs_fh_reg_read(struct file *file, char __user *user_buf, size_t count,
loff_t *ppos)
{
struct il_priv *il = file->private_data;
char *buf;
int pos = 0;
ssize_t ret = -EFAULT;
if (il->ops->dump_fh) {
ret = pos = il->ops->dump_fh(il, &buf, true);
if (buf) {
ret =
simple_read_from_buffer(user_buf, count, ppos, buf,
pos);
kfree(buf);
}
}
return ret;
}
static ssize_t
il_dbgfs_missed_beacon_read(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct il_priv *il = file->private_data;
int pos = 0;
char buf[12];
const size_t bufsz = sizeof(buf);
pos +=
scnprintf(buf + pos, bufsz - pos, "%d\n",
il->missed_beacon_threshold);
return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
}
static ssize_t
il_dbgfs_missed_beacon_write(struct file *file, const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct il_priv *il = 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 < IL_MISSED_BEACON_THRESHOLD_MIN ||
missed > IL_MISSED_BEACON_THRESHOLD_MAX)
il->missed_beacon_threshold = IL_MISSED_BEACON_THRESHOLD_DEF;
else
il->missed_beacon_threshold = missed;
return count;
}
static ssize_t
il_dbgfs_force_reset_read(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct il_priv *il = file->private_data;
int pos = 0;
char buf[300];
const size_t bufsz = sizeof(buf);
struct il_force_reset *force_reset;
force_reset = &il->force_reset;
pos +=
scnprintf(buf + pos, bufsz - pos, "\tnumber of reset request: %d\n",
force_reset->reset_request_count);
pos +=
scnprintf(buf + pos, bufsz - pos,
"\tnumber of reset request success: %d\n",
force_reset->reset_success_count);
pos +=
scnprintf(buf + pos, bufsz - pos,
"\tnumber of reset request reject: %d\n",
force_reset->reset_reject_count);
pos +=
scnprintf(buf + pos, bufsz - pos, "\treset duration: %lu\n",
force_reset->reset_duration);
return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
}
static ssize_t
il_dbgfs_force_reset_write(struct file *file, const char __user *user_buf,
size_t count, loff_t *ppos)
{
int ret;
struct il_priv *il = file->private_data;
ret = il_force_reset(il, true);
return ret ? ret : count;
}
static ssize_t
il_dbgfs_wd_timeout_write(struct file *file, const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct il_priv *il = file->private_data;
char buf[8];
int buf_size;
int timeout;
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", &timeout) != 1)
return -EINVAL;
if (timeout < 0 || timeout > IL_MAX_WD_TIMEOUT)
timeout = IL_DEF_WD_TIMEOUT;
il->cfg->wd_timeout = timeout;
il_setup_watchdog(il);
return count;
}
DEBUGFS_READ_FILE_OPS(rx_stats);
DEBUGFS_READ_FILE_OPS(tx_stats);
DEBUGFS_READ_FILE_OPS(rx_queue);
DEBUGFS_READ_FILE_OPS(tx_queue);
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_stats);
DEBUGFS_WRITE_FILE_OPS(clear_traffic_stats);
DEBUGFS_READ_FILE_OPS(fh_reg);
DEBUGFS_READ_WRITE_FILE_OPS(missed_beacon);
DEBUGFS_READ_WRITE_FILE_OPS(force_reset);
DEBUGFS_READ_FILE_OPS(rxon_flags);
DEBUGFS_READ_FILE_OPS(rxon_filter_flags);
DEBUGFS_WRITE_FILE_OPS(wd_timeout);
/*
* Create the debugfs files and directories
*
*/
void
il_dbgfs_register(struct il_priv *il, const char *name)
{
struct dentry *phyd = il->hw->wiphy->debugfsdir;
struct dentry *dir_drv, *dir_data, *dir_rf, *dir_debug;
dir_drv = debugfs_create_dir(name, phyd);
il->debugfs_dir = dir_drv;
dir_data = debugfs_create_dir("data", dir_drv);
dir_rf = debugfs_create_dir("rf", dir_drv);
dir_debug = debugfs_create_dir("debug", dir_drv);
DEBUGFS_ADD_FILE(nvm, dir_data, 0400);
DEBUGFS_ADD_FILE(sram, dir_data, 0600);
DEBUGFS_ADD_FILE(stations, dir_data, 0400);
DEBUGFS_ADD_FILE(channels, dir_data, 0400);
DEBUGFS_ADD_FILE(status, dir_data, 0400);
DEBUGFS_ADD_FILE(interrupt, dir_data, 0600);
DEBUGFS_ADD_FILE(qos, dir_data, 0400);
DEBUGFS_ADD_FILE(disable_ht40, dir_data, 0600);
DEBUGFS_ADD_FILE(rx_stats, dir_debug, 0400);
DEBUGFS_ADD_FILE(tx_stats, dir_debug, 0400);
DEBUGFS_ADD_FILE(rx_queue, dir_debug, 0400);
DEBUGFS_ADD_FILE(tx_queue, dir_debug, 0400);
DEBUGFS_ADD_FILE(power_save_status, dir_debug, 0400);
DEBUGFS_ADD_FILE(clear_ucode_stats, dir_debug, 0200);
DEBUGFS_ADD_FILE(clear_traffic_stats, dir_debug, 0200);
DEBUGFS_ADD_FILE(fh_reg, dir_debug, 0400);
DEBUGFS_ADD_FILE(missed_beacon, dir_debug, 0200);
DEBUGFS_ADD_FILE(force_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);
if (il->cfg->sensitivity_calib_by_driver)
DEBUGFS_ADD_FILE(sensitivity, dir_debug, 0400);
if (il->cfg->chain_noise_calib_by_driver)
DEBUGFS_ADD_FILE(chain_noise, dir_debug, 0400);
DEBUGFS_ADD_FILE(rxon_flags, dir_debug, 0200);
DEBUGFS_ADD_FILE(rxon_filter_flags, dir_debug, 0200);
DEBUGFS_ADD_FILE(wd_timeout, dir_debug, 0200);
if (il->cfg->sensitivity_calib_by_driver)
DEBUGFS_ADD_BOOL(disable_sensitivity, dir_rf,
&il->disable_sens_cal);
if (il->cfg->chain_noise_calib_by_driver)
DEBUGFS_ADD_BOOL(disable_chain_noise, dir_rf,
&il->disable_chain_noise_cal);
DEBUGFS_ADD_BOOL(disable_tx_power, dir_rf, &il->disable_tx_power_cal);
}
EXPORT_SYMBOL(il_dbgfs_register);
/*
* Remove the debugfs files and directories
*/
void
il_dbgfs_unregister(struct il_priv *il)
{
if (!il->debugfs_dir)
return;
debugfs_remove_recursive(il->debugfs_dir);
il->debugfs_dir = NULL;
}
EXPORT_SYMBOL(il_dbgfs_unregister);