iwl-debugfs.c 52.2 KB
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/******************************************************************************
 *
 * GPL LICENSE SUMMARY
 *
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 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
 * USA
 *
 * The full GNU General Public License is included in this distribution
 * in the file called LICENSE.GPL.
 *
 * Contact Information:
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 *  Intel Linux Wireless <ilw@linux.intel.com>
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 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *****************************************************************************/

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

#include <linux/ieee80211.h>
#include <net/mac80211.h>


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#include "iwl-dev.h"
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#include "iwl-debug.h"
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#include "iwl-core.h"
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#include "iwl-io.h"
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/* create and remove of files */
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#define DEBUGFS_ADD_FILE(name, parent, mode) do {			\
	if (!debugfs_create_file(#name, mode, parent, priv,		\
				 &iwl_dbgfs_##name##_ops))		\
		goto err;						\
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} while (0)

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#define DEBUGFS_ADD_BOOL(name, parent, ptr) do {			\
	struct dentry *__tmp;						\
	__tmp = debugfs_create_bool(#name, S_IWUSR | S_IRUSR,		\
				    parent, ptr);			\
	if (IS_ERR(__tmp) || !__tmp)					\
		goto err;						\
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} while (0)

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#define DEBUGFS_ADD_X32(name, parent, ptr) do {				\
	struct dentry *__tmp;						\
	__tmp = debugfs_create_x32(#name, S_IWUSR | S_IRUSR,		\
				   parent, ptr);			\
	if (IS_ERR(__tmp) || !__tmp)					\
		goto err;						\
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} while (0)

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/* file operation */
#define DEBUGFS_READ_FUNC(name)                                         \
static ssize_t iwl_dbgfs_##name##_read(struct file *file,               \
					char __user *user_buf,          \
					size_t count, loff_t *ppos);

#define DEBUGFS_WRITE_FUNC(name)                                        \
static ssize_t iwl_dbgfs_##name##_write(struct file *file,              \
					const char __user *user_buf,    \
					size_t count, loff_t *ppos);


static int iwl_dbgfs_open_file_generic(struct inode *inode, struct file *file)
{
	file->private_data = inode->i_private;
	return 0;
}

#define DEBUGFS_READ_FILE_OPS(name)                                     \
	DEBUGFS_READ_FUNC(name);                                        \
static const struct file_operations iwl_dbgfs_##name##_ops = {          \
	.read = iwl_dbgfs_##name##_read,                       		\
	.open = iwl_dbgfs_open_file_generic,                    	\
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	.llseek = generic_file_llseek,					\
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};

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


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

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

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	struct iwl_priv *priv = file->private_data;
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	char *buf;
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	int pos = 0;

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	int cnt;
	ssize_t ret;
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	const size_t bufsz = 100 +
		sizeof(char) * 50 * (MANAGEMENT_MAX + CONTROL_MAX);
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	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,
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				 "\t%25s\t\t: %u\n",
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				 get_mgmt_string(cnt),
				 priv->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,
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				 "\t%25s\t\t: %u\n",
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				 get_ctrl_string(cnt),
				 priv->tx_stats.ctrl[cnt]);
	}
	pos += scnprintf(buf + pos, bufsz - pos, "Data:\n");
	pos += scnprintf(buf + pos, bufsz - pos, "\tcnt: %u\n",
			 priv->tx_stats.data_cnt);
	pos += scnprintf(buf + pos, bufsz - pos, "\tbytes: %llu\n",
			 priv->tx_stats.data_bytes);
	ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
	kfree(buf);
	return ret;
}

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

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

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	struct iwl_priv *priv = file->private_data;
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	char *buf;
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	int pos = 0;
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	int cnt;
	ssize_t ret;
	const size_t bufsz = 100 +
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		sizeof(char) * 50 * (MANAGEMENT_MAX + CONTROL_MAX);
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	buf = kzalloc(bufsz, GFP_KERNEL);
	if (!buf)
		return -ENOMEM;
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	pos += scnprintf(buf + pos, bufsz - pos, "Management:\n");
	for (cnt = 0; cnt < MANAGEMENT_MAX; cnt++) {
		pos += scnprintf(buf + pos, bufsz - pos,
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				 "\t%25s\t\t: %u\n",
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				 get_mgmt_string(cnt),
				 priv->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,
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				 "\t%25s\t\t: %u\n",
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				 get_ctrl_string(cnt),
				 priv->rx_stats.ctrl[cnt]);
	}
	pos += scnprintf(buf + pos, bufsz - pos, "Data:\n");
	pos += scnprintf(buf + pos, bufsz - pos, "\tcnt: %u\n",
			 priv->rx_stats.data_cnt);
	pos += scnprintf(buf + pos, bufsz - pos, "\tbytes: %llu\n",
			 priv->rx_stats.data_bytes);
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	ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
	kfree(buf);
	return ret;
}

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static ssize_t iwl_dbgfs_sram_read(struct file *file,
					char __user *user_buf,
					size_t count, loff_t *ppos)
{
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	u32 val = 0;
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	char *buf;
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	ssize_t ret;
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	int i = 0;
	bool device_format = false;
	int offset = 0;
	int len = 0;
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	int pos = 0;
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	int sram;
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	struct iwl_priv *priv = file->private_data;
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	size_t bufsz;
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	/* default is to dump the entire data segment */
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	if (!priv->dbgfs_sram_offset && !priv->dbgfs_sram_len) {
		priv->dbgfs_sram_offset = 0x800000;
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		if (priv->ucode_type == UCODE_INIT)
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			priv->dbgfs_sram_len = priv->ucode_init_data.len;
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		else
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			priv->dbgfs_sram_len = priv->ucode_data.len;
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	}
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	len = priv->dbgfs_sram_len;

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

	bufsz =  50 + len * 4;
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	buf = kmalloc(bufsz, GFP_KERNEL);
	if (!buf)
		return -ENOMEM;
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	pos += scnprintf(buf + pos, bufsz - pos, "sram_len: 0x%x\n",
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			 len);
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	pos += scnprintf(buf + pos, bufsz - pos, "sram_offset: 0x%x\n",
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			priv->dbgfs_sram_offset);
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	/* 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_read_targ_mem(priv, 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_read_targ_mem(priv, sram);
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		}
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		/* put in extra spaces and split lines for human readability */
		if (++i == 16) {
			i = 0;
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			pos += scnprintf(buf + pos, bufsz - pos, "\n");
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		} else if (!(i & 7)) {
			pos += scnprintf(buf + pos, bufsz - pos, "   ");
		} else if (!(i & 3)) {
			pos += scnprintf(buf + pos, bufsz - pos, " ");
		}
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	}
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	if (i)
		pos += scnprintf(buf + pos, bufsz - pos, "\n");
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	ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
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	kfree(buf);
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	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) {
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		priv->dbgfs_sram_offset = offset;
		priv->dbgfs_sram_len = len;
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	} else if (sscanf(buf, "%x", &offset) == 1) {
		priv->dbgfs_sram_offset = offset;
		priv->dbgfs_sram_len = -4;
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	} else {
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		priv->dbgfs_sram_offset = 0;
		priv->dbgfs_sram_len = 0;
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	}

	return count;
}

static ssize_t iwl_dbgfs_stations_read(struct file *file, char __user *user_buf,
					size_t count, loff_t *ppos)
{
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	struct iwl_priv *priv = file->private_data;
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	struct iwl_station_entry *station;
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	int max_sta = priv->hw_params.max_stations;
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	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);
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	if (!buf)
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		return -ENOMEM;

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

	for (i = 0; i < max_sta; i++) {
		station = &priv->stations[i];
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		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");
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		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)
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				pos += scnprintf(buf + pos, bufsz - pos,
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						 " - waitforba");
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			pos += scnprintf(buf + pos, bufsz - pos, "\n");
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		}
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		pos += scnprintf(buf + pos, bufsz - pos, "\n");
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	}

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

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

	if (eeprom_len % 16) {
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		IWL_ERR(priv, "NVM size is not multiple of 16.\n");
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		return -ENODATA;
	}

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	ptr = priv->eeprom;
	if (!ptr) {
		IWL_ERR(priv, "Invalid EEPROM/OTP memory\n");
		return -ENOMEM;
	}

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	/* 4 characters for byte 0xYY */
	buf = kzalloc(buf_size, GFP_KERNEL);
	if (!buf) {
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		IWL_ERR(priv, "Can not allocate Buffer\n");
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		return -ENOMEM;
	}
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	eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
	pos += scnprintf(buf + pos, buf_size - pos, "NVM Type: %s, "
			"version: 0x%x\n",
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			(priv->nvm_device_type == NVM_DEVICE_TYPE_OTP)
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			 ? "OTP" : "EEPROM", eeprom_ver);
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	for (ofs = 0 ; ofs < eeprom_len ; ofs += 16) {
		pos += scnprintf(buf + pos, buf_size - pos, "0x%.4x ", ofs);
		hex_dump_to_buffer(ptr + ofs, 16 , 16, 2, buf + pos,
				   buf_size - pos, 0);
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		pos += strlen(buf + pos);
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		if (buf_size - pos > 0)
			buf[pos++] = '\n';
	}

	ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
	kfree(buf);
	return ret;
}
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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;
	int pos = 0;
	ssize_t ret = -ENOMEM;

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

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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;

	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", &event_log_flag) != 1)
		return -EFAULT;
	if (event_log_flag == 1)
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		iwl_dump_nic_event_log(priv, true, NULL, false);
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	return count;
}

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static ssize_t iwl_dbgfs_channels_read(struct file *file, char __user *user_buf,
				       size_t count, loff_t *ppos)
{
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	struct iwl_priv *priv = file->private_data;
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	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(STATUS_GEO_CONFIGURED, &priv->status))
		return -EAGAIN;

	buf = kzalloc(bufsz, GFP_KERNEL);
	if (!buf) {
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		IWL_ERR(priv, "Can not allocate Buffer\n");
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		return -ENOMEM;
	}

	supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
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	if (supp_band) {
		channels = supp_band->channels;
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		pos += scnprintf(buf + pos, bufsz - pos,
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				"Displaying %d channels in 2.4GHz band 802.11bg):\n",
				supp_band->n_channels);
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		for (i = 0; i < supp_band->n_channels; i++)
			pos += scnprintf(buf + pos, bufsz - pos,
					"%d: %ddBm: BSS%s%s, %s.\n",
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					channels[i].hw_value,
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					channels[i].max_power,
					channels[i].flags & IEEE80211_CHAN_RADAR ?
					" (IEEE 802.11h required)" : "",
					((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
					|| (channels[i].flags &
					IEEE80211_CHAN_RADAR)) ? "" :
					", IBSS",
					channels[i].flags &
					IEEE80211_CHAN_PASSIVE_SCAN ?
					"passive only" : "active/passive");
	}
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	supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
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	if (supp_band) {
		channels = supp_band->channels;
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		pos += scnprintf(buf + pos, bufsz - pos,
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				"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",
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					channels[i].hw_value,
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					channels[i].max_power,
					channels[i].flags & IEEE80211_CHAN_RADAR ?
					" (IEEE 802.11h required)" : "",
					((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
					|| (channels[i].flags &
					IEEE80211_CHAN_RADAR)) ? "" :
					", IBSS",
					channels[i].flags &
					IEEE80211_CHAN_PASSIVE_SCAN ?
					"passive only" : "active/passive");
	}
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	ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
	kfree(buf);
	return ret;
}

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

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	char buf[512];
	int pos = 0;
	const size_t bufsz = sizeof(buf);

	pos += scnprintf(buf + pos, bufsz - pos, "STATUS_HCMD_ACTIVE:\t %d\n",
		test_bit(STATUS_HCMD_ACTIVE, &priv->status));
	pos += scnprintf(buf + pos, bufsz - pos, "STATUS_INT_ENABLED:\t %d\n",
		test_bit(STATUS_INT_ENABLED, &priv->status));
	pos += scnprintf(buf + pos, bufsz - pos, "STATUS_RF_KILL_HW:\t %d\n",
		test_bit(STATUS_RF_KILL_HW, &priv->status));
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	pos += scnprintf(buf + pos, bufsz - pos, "STATUS_CT_KILL:\t\t %d\n",
		test_bit(STATUS_CT_KILL, &priv->status));
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	pos += scnprintf(buf + pos, bufsz - pos, "STATUS_INIT:\t\t %d\n",
		test_bit(STATUS_INIT, &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_TEMPERATURE:\t %d\n",
		test_bit(STATUS_TEMPERATURE, &priv->status));
	pos += scnprintf(buf + pos, bufsz - pos, "STATUS_GEO_CONFIGURED:\t %d\n",
		test_bit(STATUS_GEO_CONFIGURED, &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);
}

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

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	struct iwl_priv *priv = file->private_data;
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	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) {
		IWL_ERR(priv, "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",
		priv->isr_stats.hw);
	pos += scnprintf(buf + pos, bufsz - pos, "SW Error:\t\t\t %u\n",
		priv->isr_stats.sw);
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	if (priv->isr_stats.sw || priv->isr_stats.hw) {
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		pos += scnprintf(buf + pos, bufsz - pos,
			"\tLast Restarting Code:  0x%X\n",
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			priv->isr_stats.err_code);
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	}
#ifdef CONFIG_IWLWIFI_DEBUG
	pos += scnprintf(buf + pos, bufsz - pos, "Frame transmitted:\t\t %u\n",
		priv->isr_stats.sch);
	pos += scnprintf(buf + pos, bufsz - pos, "Alive interrupt:\t\t %u\n",
		priv->isr_stats.alive);
#endif
	pos += scnprintf(buf + pos, bufsz - pos,
		"HW RF KILL switch toggled:\t %u\n",
		priv->isr_stats.rfkill);

	pos += scnprintf(buf + pos, bufsz - pos, "CT KILL:\t\t\t %u\n",
		priv->isr_stats.ctkill);

	pos += scnprintf(buf + pos, bufsz - pos, "Wakeup Interrupt:\t\t %u\n",
		priv->isr_stats.wakeup);

	pos += scnprintf(buf + pos, bufsz - pos,
		"Rx command responses:\t\t %u\n",
		priv->isr_stats.rx);
	for (cnt = 0; cnt < REPLY_MAX; cnt++) {
		if (priv->isr_stats.rx_handlers[cnt] > 0)
			pos += scnprintf(buf + pos, bufsz - pos,
				"\tRx handler[%36s]:\t\t %u\n",
				get_cmd_string(cnt),
				priv->isr_stats.rx_handlers[cnt]);
	}

	pos += scnprintf(buf + pos, bufsz - pos, "Tx/FH interrupt:\t\t %u\n",
		priv->isr_stats.tx);

	pos += scnprintf(buf + pos, bufsz - pos, "Unexpected INTA:\t\t %u\n",
		priv->isr_stats.unhandled);

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

static ssize_t iwl_dbgfs_interrupt_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)
		iwl_clear_isr_stats(priv);

	return count;
}

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

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	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,
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				"AC[%d]\t%u\t%u\t%u\t%u\n", i,
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				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");
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	}
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	return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
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}
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static ssize_t iwl_dbgfs_thermal_throttling_read(struct file *file,
				char __user *user_buf,
				size_t count, loff_t *ppos)
{
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	struct iwl_priv *priv = file->private_data;
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	struct iwl_tt_mgmt *tt = &priv->thermal_throttle;
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	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",
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			tt->advanced_tt ? "Advance" : "Legacy");
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	pos += scnprintf(buf + pos, bufsz - pos,
			"Thermal Throttling State: %d\n",
			tt->state);
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	if (tt->advanced_tt) {
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		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);
	}
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	return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
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}

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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;
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	if (!iwl_is_any_associated(priv))
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		priv->disable_ht40 = ht40 ? true : false;
	else {
		IWL_ERR(priv, "Sta associated with AP - "
			"Change to 40MHz channel support is not allowed\n");
		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)
{
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	struct iwl_priv *priv = file->private_data;
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	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");
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	return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
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}

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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".
	 */
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	if (value == 0)
		return -EINVAL;
	else if (value > 0)
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		value -= 1;

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

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

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	priv->power_data.debug_sleep_level_override = value;

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

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

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DEBUGFS_READ_WRITE_FILE_OPS(sram);
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DEBUGFS_READ_WRITE_FILE_OPS(log_event);
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DEBUGFS_READ_FILE_OPS(nvm);
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DEBUGFS_READ_FILE_OPS(stations);
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DEBUGFS_READ_FILE_OPS(channels);
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DEBUGFS_READ_FILE_OPS(status);
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DEBUGFS_READ_WRITE_FILE_OPS(interrupt);
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DEBUGFS_READ_FILE_OPS(qos);
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DEBUGFS_READ_FILE_OPS(thermal_throttling);
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DEBUGFS_READ_WRITE_FILE_OPS(disable_ht40);
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DEBUGFS_READ_WRITE_FILE_OPS(sleep_level_override);
DEBUGFS_READ_FILE_OPS(current_sleep_command);
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static ssize_t iwl_dbgfs_traffic_log_read(struct file *file,
					 char __user *user_buf,
					 size_t count, loff_t *ppos)
{
	struct iwl_priv *priv = file->private_data;
	int pos = 0, ofs = 0;
	int cnt = 0, entry;
	struct iwl_tx_queue *txq;
	struct iwl_queue *q;
	struct iwl_rx_queue *rxq = &priv->rxq;
	char *buf;
	int bufsz = ((IWL_TRAFFIC_ENTRIES * IWL_TRAFFIC_ENTRY_SIZE * 64) * 2) +
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		(priv->cfg->base_params->num_of_queues * 32 * 8) + 400;
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	const u8 *ptr;
	ssize_t ret;

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	if (!priv->txq) {
		IWL_ERR(priv, "txq not ready\n");
		return -EAGAIN;
	}
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	buf = kzalloc(bufsz, GFP_KERNEL);
	if (!buf) {
		IWL_ERR(priv, "Can not allocate buffer\n");
		return -ENOMEM;
	}
	pos += scnprintf(buf + pos, bufsz - pos, "Tx Queue\n");
	for (cnt = 0; cnt < priv->hw_params.max_txq_num; cnt++) {
		txq = &priv->txq[cnt];
		q = &txq->q;
		pos += scnprintf(buf + pos, bufsz - pos,
				"q[%d]: read_ptr: %u, write_ptr: %u\n",
				cnt, q->read_ptr, q->write_ptr);
	}
	if (priv->tx_traffic && (iwl_debug_level & IWL_DL_TX)) {
		ptr = priv->tx_traffic;
		pos += scnprintf(buf + pos, bufsz - pos,
				"Tx Traffic idx: %u\n",	priv->tx_traffic_idx);
		for (cnt = 0, ofs = 0; cnt < IWL_TRAFFIC_ENTRIES; cnt++) {
			for (entry = 0; entry < IWL_TRAFFIC_ENTRY_SIZE / 16;
			     entry++,  ofs += 16) {
				pos += scnprintf(buf + pos, bufsz - pos,
						"0x%.4x ", ofs);
				hex_dump_to_buffer(ptr + ofs, 16, 16, 2,
						   buf + pos, bufsz - pos, 0);
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				pos += strlen(buf + pos);
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				if (bufsz - pos > 0)
					buf[pos++] = '\n';
			}
		}
	}

	pos += scnprintf(buf + pos, bufsz - pos, "Rx Queue\n");
	pos += scnprintf(buf + pos, bufsz - pos,
			"read: %u, write: %u\n",
			 rxq->read, rxq->write);

	if (priv->rx_traffic && (iwl_debug_level & IWL_DL_RX)) {
		ptr = priv->rx_traffic;
		pos += scnprintf(buf + pos, bufsz - pos,
				"Rx Traffic idx: %u\n",	priv->rx_traffic_idx);
		for (cnt = 0, ofs = 0; cnt < IWL_TRAFFIC_ENTRIES; cnt++) {
			for (entry = 0; entry < IWL_TRAFFIC_ENTRY_SIZE / 16;
			     entry++,  ofs += 16) {
				pos += scnprintf(buf + pos, bufsz - pos,
						"0x%.4x ", ofs);
				hex_dump_to_buffer(ptr + ofs, 16, 16, 2,
						   buf + pos, bufsz - pos, 0);
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				pos += strlen(buf + pos);
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				if (bufsz - pos > 0)
					buf[pos++] = '\n';
			}
		}
	}

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

static ssize_t iwl_dbgfs_traffic_log_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 traffic_log;

	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", &traffic_log) != 1)
		return -EFAULT;
	if (traffic_log == 0)
		iwl_reset_traffic_log(priv);

	return count;
}

970
971
972
973
static ssize_t iwl_dbgfs_tx_queue_read(struct file *file,
						char __user *user_buf,
						size_t count, loff_t *ppos) {

974
	struct iwl_priv *priv = file->private_data;
975
976
977
978
979
980
	struct iwl_tx_queue *txq;
	struct iwl_queue *q;
	char *buf;
	int pos = 0;
	int cnt;
	int ret;
981
982
	const size_t bufsz = sizeof(char) * 64 *
				priv->cfg->base_params->num_of_queues;
983

984
985
986
987
	if (!priv->txq) {
		IWL_ERR(priv, "txq not ready\n");
		return -EAGAIN;
	}
988
989
990
991
992
993
994
995
996
997
998
999
	buf = kzalloc(bufsz, GFP_KERNEL);
	if (!buf)
		return -ENOMEM;

	for (cnt = 0; cnt < priv->hw_params.max_txq_num; cnt++) {
		txq = &priv->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, priv->queue_stopped),
1000
1001
				txq->swq_id, txq->swq_id & 3,
				(txq->swq_id >> 2) & 0x1f);
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
		if (cnt >= 4)
			continue;
		/* for the ACs, display the stop count too */
		pos += scnprintf(buf + pos, bufsz - pos,
				"        stop-count: %d\n",
				atomic_read(&priv->queue_stop_count[cnt]));
	}
	ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
	kfree(buf);
	return ret;
}

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

1018
	struct iwl_priv *priv = file->private_data;
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
	struct iwl_rx_queue *rxq = &priv->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);
1030
1031
	if (rxq->rb_stts) {
		pos += scnprintf(buf + pos, bufsz - pos, "closed_rb_num: %u\n",
1032
			 le16_to_cpu(rxq->rb_stts->closed_rb_num) &  0x0FFF);
1033
1034
1035
1036
	} else {
		pos += scnprintf(buf + pos, bufsz - pos,
					"closed_rb_num: Not Allocated\n");
	}
1037
1038
1039
	return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
}

1040
1041
1042
1043
static ssize_t iwl_dbgfs_ucode_rx_stats_read(struct file *file,
					char __user *user_buf,
					size_t count, loff_t *ppos)
{
1044
	struct iwl_priv *priv = file->private_data;
1045
1046
	return priv->cfg->ops->lib->debugfs_ops.rx_stats_read(file,
			user_buf, count, ppos);
1047
1048
1049
1050
1051
1052
}

static ssize_t iwl_dbgfs_ucode_tx_stats_read(struct file *file,
					char __user *user_buf,
					size_t count, loff_t *ppos)
{
1053
	struct iwl_priv *priv = file->private_data;
1054
1055
	return priv->cfg->ops->lib->debugfs_ops.tx_stats_read(file,
			user_buf, count, ppos);
1056
1057
1058
1059
1060
1061
}

static ssize_t iwl_dbgfs_ucode_general_stats_read(struct file *file,
					char __user *user_buf,
					size_t count, loff_t *ppos)
{
1062
	struct iwl_priv *priv = file->private_data;
1063
1064
	return priv->cfg->ops->lib->debugfs_ops.general_stats_read(file,
			user_buf, count, ppos);
1065
1066
}

1067
1068
1069
1070
static ssize_t iwl_dbgfs_sensitivity_read(struct file *file,
					char __user *user_buf,
					size_t count, loff_t *ppos) {

1071
	struct iwl_priv *priv = file->private_data;
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
	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) {
		IWL_ERR(priv, "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 iwl_dbgfs_chain_noise_read(struct file *file,
					char __user *user_buf,
					size_t count, loff_t *ppos) {

1152
	struct iwl_priv *priv = file->private_data;
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
	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) {
		IWL_ERR(priv, "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;
}

1206
1207
1208
1209
static ssize_t iwl_dbgfs_power_save_status_read(struct file *file,
						    char __user *user_buf,
						    size_t count, loff_t *ppos)
{
1210
	struct iwl_priv *priv = file->private_data;
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
	char buf[60];
	int pos = 0;
	const size_t bufsz = sizeof(buf);
	u32 pwrsave_status;

	pwrsave_status = iwl_read32(priv, 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);
}

1229
static ssize_t iwl_dbgfs_clear_ucode_statistics_write(struct file *file,
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
					 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, CMD_SYNC, true);
	mutex_unlock(&priv->mutex);

	return count;
}

1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
static ssize_t iwl_dbgfs_csr_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 csr;

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

1269
	iwl_dump_csr(priv);
1270
1271
1272
1273

	return count;
}

1274
1275
1276
1277
static ssize_t iwl_dbgfs_ucode_tracing_read(struct file *file,
					char __user *user_buf,
					size_t count, loff_t *ppos) {

1278
	struct iwl_priv *priv = file->private_data;
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
	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);

1292
	return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
}

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;
		/* schedule the ucode timer to occur in UCODE_TRACE_PERIOD */
		mod_timer(&priv->ucode_trace,
			jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
	} else {
		priv->event_log.ucode_trace = false;
		del_timer_sync(&priv->ucode_trace);
	}

	return count;
}

1324
1325
1326
1327
static ssize_t iwl_dbgfs_rxon_flags_read(struct file *file,
					 char __user *user_buf,
					 size_t count, loff_t *ppos) {

1328
	struct iwl_priv *priv = file->private_data;
1329
1330
1331
	int len = 0;
	char buf[20];

1332
1333
	len = sprintf(buf, "0x%04X\n",
		le32_to_cpu(priv->contexts[IWL_RXON_CTX_BSS].active.flags));
1334
1335
1336
1337
1338
1339
1340
	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) {

1341
	struct iwl_priv *priv = file->private_data;
1342
1343
1344
1345
	int len = 0;
	char buf[20];

	len = sprintf(buf, "0x%04X\n",
1346
		le32_to_cpu(priv->contexts[IWL_RXON_CTX_BSS].active.filter_flags));
1347
1348
1349
	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}

1350
1351
1352
1353
static ssize_t iwl_dbgfs_fh_reg_read(struct file *file,
					 char __user *user_buf,
					 size_t count, loff_t *ppos)
{
1354
	struct iwl_priv *priv = file->private_data;
1355
1356
1357
1358
	char *buf;
	int pos = 0;
	ssize_t ret = -EFAULT;

1359
1360
1361
1362
1363
	ret = pos = iwl_dump_fh(priv, &buf, true);
	if (buf) {
		ret = simple_read_from_buffer(user_buf,
					      count, ppos, buf, pos);
		kfree(buf);
1364
1365
1366
1367
1368
	}

	return ret;
}

1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
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);

1381
	return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
}

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;
}