text: #include <linux/dcache.h>
  #include <linux/debugfs.h>
  #include <linux/delay.h>
  #include <linux/hardirq.h>
  #include <linux/mm.h>
  #include <linux/string.h>
  #include <linux/slab.h>
  #include <linux/export.h>
  
  #include "decl.h"
  #include "cmd.h"
  #include "debugfs.h"
  
  static struct dentry *lbs_dir;
  static char *szStates[] = {
  	"Connected",
  	"Disconnected"
  };
  
  #ifdef PROC_DEBUG
  static void lbs_debug_init(struct lbs_private *priv);
  #endif
  
  static ssize_t write_file_dummy(struct file *file, const char __user *buf,
                                  size_t count, loff_t *ppos)
  {
          return -EINVAL;
  }
  
  static const size_t len = PAGE_SIZE;
  
  static ssize_t lbs_dev_info(struct file *file, char __user *userbuf,
  				  size_t count, loff_t *ppos)
  {
  	struct lbs_private *priv = file->private_data;
  	size_t pos = 0;
  	unsigned long addr = get_zeroed_page(GFP_KERNEL);
  	char *buf = (char *)addr;
  	ssize_t res;
  	if (!buf)
  		return -ENOMEM;
  
  	pos += snprintf(buf+pos, len-pos, "state = %s\n",
  				szStates[priv->connect_status]);
  	pos += snprintf(buf+pos, len-pos, "region_code = %02x\n",
  				(u32) priv->regioncode);
  
  	res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
  
  	free_page(addr);
  	return res;
  }
  
  static ssize_t lbs_sleepparams_write(struct file *file,
  				const char __user *user_buf, size_t count,
  				loff_t *ppos)
  {
  	struct lbs_private *priv = file->private_data;
  	ssize_t buf_size, ret;
  	struct sleep_params sp;
  	int p1, p2, p3, p4, p5, p6;
  	unsigned long addr = get_zeroed_page(GFP_KERNEL);
  	char *buf = (char *)addr;
  	if (!buf)
  		return -ENOMEM;
  
  	buf_size = min(count, len - 1);
  	if (copy_from_user(buf, user_buf, buf_size)) {
  		ret = -EFAULT;
  		goto out_unlock;
  	}
  	ret = sscanf(buf, "%d %d %d %d %d %d", &p1, &p2, &p3, &p4, &p5, &p6);
  	if (ret != 6) {
  		ret = -EINVAL;
  		goto out_unlock;
  	}
  	sp.sp_error = p1;
  	sp.sp_offset = p2;
  	sp.sp_stabletime = p3;
  	sp.sp_calcontrol = p4;
  	sp.sp_extsleepclk = p5;
  	sp.sp_reserved = p6;
  
  	ret = lbs_cmd_802_11_sleep_params(priv, CMD_ACT_SET, &sp);
  	if (!ret)
  		ret = count;
  	else if (ret > 0)
  		ret = -EINVAL;
  
  out_unlock:
  	free_page(addr);
  	return ret;
  }
  
  static ssize_t lbs_sleepparams_read(struct file *file, char __user *userbuf,
  				  size_t count, loff_t *ppos)
  {
  	struct lbs_private *priv = file->private_data;
  	ssize_t ret;
  	size_t pos = 0;
  	struct sleep_params sp;
  	unsigned long addr = get_zeroed_page(GFP_KERNEL);
  	char *buf = (char *)addr;
  	if (!buf)
  		return -ENOMEM;
  
  	ret = lbs_cmd_802_11_sleep_params(priv, CMD_ACT_GET, &sp);
  	if (ret)
  		goto out_unlock;
  
  	pos += snprintf(buf, len, "%d %d %d %d %d %d\n", sp.sp_error,
  			sp.sp_offset, sp.sp_stabletime,
  			sp.sp_calcontrol, sp.sp_extsleepclk,
  			sp.sp_reserved);
  
  	ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
  
  out_unlock:
  	free_page(addr);
  	return ret;
  }
  
  static ssize_t lbs_host_sleep_write(struct file *file,
  				const char __user *user_buf, size_t count,
  				loff_t *ppos)
  {
  	struct lbs_private *priv = file->private_data;
  	ssize_t buf_size, ret;
  	int host_sleep;
  	unsigned long addr = get_zeroed_page(GFP_KERNEL);
  	char *buf = (char *)addr;
  	if (!buf)
  		return -ENOMEM;
  
  	buf_size = min(count, len - 1);
  	if (copy_from_user(buf, user_buf, buf_size)) {
  		ret = -EFAULT;
  		goto out_unlock;
  	}
  	ret = sscanf(buf, "%d", &host_sleep);
  	if (ret != 1) {
  		ret = -EINVAL;
  		goto out_unlock;
  	}
  
  	if (host_sleep == 0)
  		ret = lbs_set_host_sleep(priv, 0);
  	else if (host_sleep == 1) {
  		if (priv->wol_criteria == EHS_REMOVE_WAKEUP) {
  			netdev_info(priv->dev,
  				    "wake parameters not configured\n");
  			ret = -EINVAL;
  			goto out_unlock;
  		}
  		ret = lbs_set_host_sleep(priv, 1);
  	} else {
  		netdev_err(priv->dev, "invalid option\n");
  		ret = -EINVAL;
  	}
  
  	if (!ret)
  		ret = count;
  
  out_unlock:
  	free_page(addr);
  	return ret;
  }
  
  static ssize_t lbs_host_sleep_read(struct file *file, char __user *userbuf,
  				  size_t count, loff_t *ppos)
  {
  	struct lbs_private *priv = file->private_data;
  	ssize_t ret;
  	size_t pos = 0;
  	unsigned long addr = get_zeroed_page(GFP_KERNEL);
  	char *buf = (char *)addr;
  	if (!buf)
  		return -ENOMEM;
  
  	pos += snprintf(buf, len, "%d\n", priv->is_host_sleep_activated);
  
  	ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
  
  	free_page(addr);
  	return ret;
  }
  
  /*
   * When calling CMD_802_11_SUBSCRIBE_EVENT with CMD_ACT_GET, me might
   * get a bunch of vendor-specific TLVs (a.k.a. IEs) back from the
   * firmware. Here's an example:
   *	04 01 02 00 00 00 05 01 02 00 00 00 06 01 02 00
   *	00 00 07 01 02 00 3c 00 00 00 00 00 00 00 03 03
   *	00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
   *
   * The 04 01 is the TLV type (here TLV_TYPE_RSSI_LOW), 02 00 is the length,
   * 00 00 are the data bytes of this TLV. For this TLV, their meaning is
   * defined in mrvlietypes_thresholds
   *
   * This function searches in this TLV data chunk for a given TLV type
   * and returns a pointer to the first data byte of the TLV, or to NULL
   * if the TLV hasn't been found.
   */
  static void *lbs_tlv_find(uint16_t tlv_type, const uint8_t *tlv, uint16_t size)
  {
  	struct mrvl_ie_header *tlv_h;
  	uint16_t length;
  	ssize_t pos = 0;
  
  	while (pos < size) {
  		tlv_h = (struct mrvl_ie_header *) tlv;
  		if (!tlv_h->len)
  			return NULL;
  		if (tlv_h->type == cpu_to_le16(tlv_type))
  			return tlv_h;
  		length = le16_to_cpu(tlv_h->len) + sizeof(*tlv_h);
  		pos += length;
  		tlv += length;
  	}
  	return NULL;
  }
  
  
  static ssize_t lbs_threshold_read(uint16_t tlv_type, uint16_t event_mask,
  				  struct file *file, char __user *userbuf,
  				  size_t count, loff_t *ppos)
  {
  	struct cmd_ds_802_11_subscribe_event *subscribed;
  	struct mrvl_ie_thresholds *got;
  	struct lbs_private *priv = file->private_data;
  	ssize_t ret = 0;
  	size_t pos = 0;
  	char *buf;
  	u8 value;
  	u8 freq;
  	int events = 0;
  
  	buf = (char *)get_zeroed_page(GFP_KERNEL);
  	if (!buf)
  		return -ENOMEM;
  
  	subscribed = kzalloc(sizeof(*subscribed), GFP_KERNEL);
  	if (!subscribed) {
  		ret = -ENOMEM;
  		goto out_page;
  	}
  
  	subscribed->hdr.size = cpu_to_le16(sizeof(*subscribed));
  	subscribed->action = cpu_to_le16(CMD_ACT_GET);
  
  	ret = lbs_cmd_with_response(priv, CMD_802_11_SUBSCRIBE_EVENT, subscribed);
  	if (ret)
  		goto out_cmd;
  
  	got = lbs_tlv_find(tlv_type, subscribed->tlv, sizeof(subscribed->tlv));
  	if (got) {
  		value = got->value;
  		freq  = got->freq;
  		events = le16_to_cpu(subscribed->events);
  
  		pos += snprintf(buf, len, "%d %d %d\n", value, freq,
  				!!(events & event_mask));
  	}
  
  	ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
  
   out_cmd:
  	kfree(subscribed);
  
   out_page:
  	free_page((unsigned long)buf);
  	return ret;
  }
  
  
  static ssize_t lbs_threshold_write(uint16_t tlv_type, uint16_t event_mask,
  				   struct file *file,
  				   const char __user *userbuf, size_t count,
  				   loff_t *ppos)
  {
  	struct cmd_ds_802_11_subscribe_event *events;
  	struct mrvl_ie_thresholds *tlv;
  	struct lbs_private *priv = file->private_data;
  	ssize_t buf_size;
  	int value, freq, new_mask;
  	uint16_t curr_mask;
  	char *buf;
  	int ret;
  
  	buf = (char *)get_zeroed_page(GFP_KERNEL);
  	if (!buf)
  		return -ENOMEM;
  
  	buf_size = min(count, len - 1);
  	if (copy_from_user(buf, userbuf, buf_size)) {
  		ret = -EFAULT;
  		goto out_page;
  	}
  	ret = sscanf(buf, "%d %d %d", &value, &freq, &new_mask);
  	if (ret != 3) {
  		ret = -EINVAL;
  		goto out_page;
  	}
  	events = kzalloc(sizeof(*events), GFP_KERNEL);
  	if (!events) {
  		ret = -ENOMEM;
  		goto out_page;
  	}
  
  	events->hdr.size = cpu_to_le16(sizeof(*events));
  	events->action = cpu_to_le16(CMD_ACT_GET);
  
  	ret = lbs_cmd_with_response(priv, CMD_802_11_SUBSCRIBE_EVENT, events);
  	if (ret)
  		goto out_events;
  
  	curr_mask = le16_to_cpu(events->events);
  
  	if (new_mask)
  		new_mask = curr_mask | event_mask;
  	else
  		new_mask = curr_mask & ~event_mask;
  
  	/* Now everything is set and we can send stuff down to the firmware */
  
  	tlv = (void *)events->tlv;
  
  	events->action = cpu_to_le16(CMD_ACT_SET);
  	events->events = cpu_to_le16(new_mask);
  	tlv->header.type = cpu_to_le16(tlv_type);
  	tlv->header.len = cpu_to_le16(sizeof(*tlv) - sizeof(tlv->header));
  	tlv->value = value;
  	if (tlv_type != TLV_TYPE_BCNMISS)
  		tlv->freq = freq;
  
  	/* The command header, the action, the event mask, and one TLV */
  	events->hdr.size = cpu_to_le16(sizeof(events->hdr) + 4 + sizeof(*tlv));
  
  	ret = lbs_cmd_with_response(priv, CMD_802_11_SUBSCRIBE_EVENT, events);
  
  	if (!ret)
  		ret = count;
   out_events:
  	kfree(events);
   out_page:
  	free_page((unsigned long)buf);
  	return ret;
  }
  
  
  static ssize_t lbs_lowrssi_read(struct file *file, char __user *userbuf,
  				size_t count, loff_t *ppos)
  {
  	return lbs_threshold_read(TLV_TYPE_RSSI_LOW, CMD_SUBSCRIBE_RSSI_LOW,
  				  file, userbuf, count, ppos);
  }
  
  
  static ssize_t lbs_lowrssi_write(struct file *file, const char __user *userbuf,
  				 size_t count, loff_t *ppos)
  {
  	return lbs_threshold_write(TLV_TYPE_RSSI_LOW, CMD_SUBSCRIBE_RSSI_LOW,
  				   file, userbuf, count, ppos);
  }
  
  
  static ssize_t lbs_lowsnr_read(struct file *file, char __user *userbuf,
  			       size_t count, loff_t *ppos)
  {
  	return lbs_threshold_read(TLV_TYPE_SNR_LOW, CMD_SUBSCRIBE_SNR_LOW,
  				  file, userbuf, count, ppos);
  }
  
  
  static ssize_t lbs_lowsnr_write(struct file *file, const char __user *userbuf,
  				size_t count, loff_t *ppos)
  {
  	return lbs_threshold_write(TLV_TYPE_SNR_LOW, CMD_SUBSCRIBE_SNR_LOW,
  				   file, userbuf, count, ppos);
  }
  
  
  static ssize_t lbs_failcount_read(struct file *file, char __user *userbuf,
  				  size_t count, loff_t *ppos)
  {
  	return lbs_threshold_read(TLV_TYPE_FAILCOUNT, CMD_SUBSCRIBE_FAILCOUNT,
  				  file, userbuf, count, ppos);
  }
  
  
  static ssize_t lbs_failcount_write(struct file *file, const char __user *userbuf,
  				   size_t count, loff_t *ppos)
  {
  	return lbs_threshold_write(TLV_TYPE_FAILCOUNT, CMD_SUBSCRIBE_FAILCOUNT,
  				   file, userbuf, count, ppos);
  }
  
  
  static ssize_t lbs_highrssi_read(struct file *file, char __user *userbuf,
  				 size_t count, loff_t *ppos)
  {
  	return lbs_threshold_read(TLV_TYPE_RSSI_HIGH, CMD_SUBSCRIBE_RSSI_HIGH,
  				  file, userbuf, count, ppos);
  }
  
  
  static ssize_t lbs_highrssi_write(struct file *file, const char __user *userbuf,
  				  size_t count, loff_t *ppos)
  {
  	return lbs_threshold_write(TLV_TYPE_RSSI_HIGH, CMD_SUBSCRIBE_RSSI_HIGH,
  				   file, userbuf, count, ppos);
  }
  
  
  static ssize_t lbs_highsnr_read(struct file *file, char __user *userbuf,
  				size_t count, loff_t *ppos)
  {
  	return lbs_threshold_read(TLV_TYPE_SNR_HIGH, CMD_SUBSCRIBE_SNR_HIGH,
  				  file, userbuf, count, ppos);
  }
  
  
  static ssize_t lbs_highsnr_write(struct file *file, const char __user *userbuf,
  				 size_t count, loff_t *ppos)
  {
  	return lbs_threshold_write(TLV_TYPE_SNR_HIGH, CMD_SUBSCRIBE_SNR_HIGH,
  				   file, userbuf, count, ppos);
  }
  
  static ssize_t lbs_bcnmiss_read(struct file *file, char __user *userbuf,
  				size_t count, loff_t *ppos)
  {
  	return lbs_threshold_read(TLV_TYPE_BCNMISS, CMD_SUBSCRIBE_BCNMISS,
  				  file, userbuf, count, ppos);
  }
  
  
  static ssize_t lbs_bcnmiss_write(struct file *file, const char __user *userbuf,
  				 size_t count, loff_t *ppos)
  {
  	return lbs_threshold_write(TLV_TYPE_BCNMISS, CMD_SUBSCRIBE_BCNMISS,
  				   file, userbuf, count, ppos);
  }
  
  
  static ssize_t lbs_rdmac_read(struct file *file, char __user *userbuf,
  				  size_t count, loff_t *ppos)
  {
  	struct lbs_private *priv = file->private_data;
  	ssize_t pos = 0;
  	int ret;
  	unsigned long addr = get_zeroed_page(GFP_KERNEL);
  	char *buf = (char *)addr;
  	u32 val = 0;
  
  	if (!buf)
  		return -ENOMEM;
  
  	ret = lbs_get_reg(priv, CMD_MAC_REG_ACCESS, priv->mac_offset, &val);
  	mdelay(10);
  	if (!ret) {
  		pos = snprintf(buf, len, "MAC[0x%x] = 0x%08x\n",
  				priv->mac_offset, val);
  		ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
  	}
  	free_page(addr);
  	return ret;
  }
  
  static ssize_t lbs_rdmac_write(struct file *file,
  				    const char __user *userbuf,
  				    size_t count, loff_t *ppos)
  {
  	struct lbs_private *priv = file->private_data;
  	ssize_t res, buf_size;
  	unsigned long addr = get_zeroed_page(GFP_KERNEL);
  	char *buf = (char *)addr;
  	if (!buf)
  		return -ENOMEM;
  
  	buf_size = min(count, len - 1);
  	if (copy_from_user(buf, userbuf, buf_size)) {
  		res = -EFAULT;
  		goto out_unlock;
  	}
  	priv->mac_offset = simple_strtoul(buf, NULL, 16);
  	res = count;
  out_unlock:
  	free_page(addr);
  	return res;
  }
  
  static ssize_t lbs_wrmac_write(struct file *file,
  				    const char __user *userbuf,
  				    size_t count, loff_t *ppos)
  {
  
  	struct lbs_private *priv = file->private_data;
  	ssize_t res, buf_size;
  	u32 offset, value;
  	unsigned long addr = get_zeroed_page(GFP_KERNEL);
  	char *buf = (char *)addr;
  	if (!buf)
  		return -ENOMEM;
  
  	buf_size = min(count, len - 1);
  	if (copy_from_user(buf, userbuf, buf_size)) {
  		res = -EFAULT;
  		goto out_unlock;
  	}
  	res = sscanf(buf, "%x %x", &offset, &value);
  	if (res != 2) {
  		res = -EFAULT;
  		goto out_unlock;
  	}
  
  	res = lbs_set_reg(priv, CMD_MAC_REG_ACCESS, offset, value);
  	mdelay(10);
  
  	if (!res)
  		res = count;
  out_unlock:
  	free_page(addr);
  	return res;
  }
  
  static ssize_t lbs_rdbbp_read(struct file *file, char __user *userbuf,
  				  size_t count, loff_t *ppos)
  {
  	struct lbs_private *priv = file->private_data;
  	ssize_t pos = 0;
  	int ret;
  	unsigned long addr = get_zeroed_page(GFP_KERNEL);
  	char *buf = (char *)addr;
  	u32 val;
  
  	if (!buf)
  		return -ENOMEM;
  
  	ret = lbs_get_reg(priv, CMD_BBP_REG_ACCESS, priv->bbp_offset, &val);
  	mdelay(10);
  	if (!ret) {
  		pos = snprintf(buf, len, "BBP[0x%x] = 0x%08x\n",
  				priv->bbp_offset, val);
  		ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
  	}
  	free_page(addr);
  
  	return ret;
  }
  
  static ssize_t lbs_rdbbp_write(struct file *file,
  				    const char __user *userbuf,
  				    size_t count, loff_t *ppos)
  {
  	struct lbs_private *priv = file->private_data;
  	ssize_t res, buf_size;
  	unsigned long addr = get_zeroed_page(GFP_KERNEL);
  	char *buf = (char *)addr;
  	if (!buf)
  		return -ENOMEM;
  
  	buf_size = min(count, len - 1);
  	if (copy_from_user(buf, userbuf, buf_size)) {
  		res = -EFAULT;
  		goto out_unlock;
  	}
  	priv->bbp_offset = simple_strtoul(buf, NULL, 16);
  	res = count;
  out_unlock:
  	free_page(addr);
  	return res;
  }
  
  static ssize_t lbs_wrbbp_write(struct file *file,
  				    const char __user *userbuf,
  				    size_t count, loff_t *ppos)
  {
  
  	struct lbs_private *priv = file->private_data;
  	ssize_t res, buf_size;
  	u32 offset, value;
  	unsigned long addr = get_zeroed_page(GFP_KERNEL);
  	char *buf = (char *)addr;
  	if (!buf)
  		return -ENOMEM;
  
  	buf_size = min(count, len - 1);
  	if (copy_from_user(buf, userbuf, buf_size)) {
  		res = -EFAULT;
  		goto out_unlock;
  	}
  	res = sscanf(buf, "%x %x", &offset, &value);
  	if (res != 2) {
  		res = -EFAULT;
  		goto out_unlock;
  	}
  
  	res = lbs_set_reg(priv, CMD_BBP_REG_ACCESS, offset, value);
  	mdelay(10);
  
  	if (!res)
  		res = count;
  out_unlock:
  	free_page(addr);
  	return res;
  }
  
  static ssize_t lbs_rdrf_read(struct file *file, char __user *userbuf,
  				  size_t count, loff_t *ppos)
  {
  	struct lbs_private *priv = file->private_data;
  	ssize_t pos = 0;
  	int ret;
  	unsigned long addr = get_zeroed_page(GFP_KERNEL);
  	char *buf = (char *)addr;
  	u32 val;
  
  	if (!buf)
  		return -ENOMEM;
  
  	ret = lbs_get_reg(priv, CMD_RF_REG_ACCESS, priv->rf_offset, &val);
  	mdelay(10);
  	if (!ret) {
  		pos = snprintf(buf, len, "RF[0x%x] = 0x%08x\n",
  				priv->rf_offset, val);
  		ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
  	}
  	free_page(addr);
  
  	return ret;
  }
  
  static ssize_t lbs_rdrf_write(struct file *file,
  				    const char __user *userbuf,
  				    size_t count, loff_t *ppos)
  {
  	struct lbs_private *priv = file->private_data;
  	ssize_t res, buf_size;
  	unsigned long addr = get_zeroed_page(GFP_KERNEL);
  	char *buf = (char *)addr;
  	if (!buf)
  		return -ENOMEM;
  
  	buf_size = min(count, len - 1);
  	if (copy_from_user(buf, userbuf, buf_size)) {
  		res = -EFAULT;
  		goto out_unlock;
  	}
  	priv->rf_offset = simple_strtoul(buf, NULL, 16);
  	res = count;
  out_unlock:
  	free_page(addr);
  	return res;
  }
  
  static ssize_t lbs_wrrf_write(struct file *file,
  				    const char __user *userbuf,
  				    size_t count, loff_t *ppos)
  {
  
  	struct lbs_private *priv = file->private_data;
  	ssize_t res, buf_size;
  	u32 offset, value;
  	unsigned long addr = get_zeroed_page(GFP_KERNEL);
  	char *buf = (char *)addr;
  	if (!buf)
  		return -ENOMEM;
  
  	buf_size = min(count, len - 1);
  	if (copy_from_user(buf, userbuf, buf_size)) {
  		res = -EFAULT;
  		goto out_unlock;
  	}
  	res = sscanf(buf, "%x %x", &offset, &value);
  	if (res != 2) {
  		res = -EFAULT;
  		goto out_unlock;
  	}
  
  	res = lbs_set_reg(priv, CMD_RF_REG_ACCESS, offset, value);
  	mdelay(10);
  
  	if (!res)
  		res = count;
  out_unlock:
  	free_page(addr);
  	return res;
  }
  
  #define FOPS(fread, fwrite) { \
  	.owner = THIS_MODULE, \
  	.open = simple_open, \
  	.read = (fread), \
  	.write = (fwrite), \
  	.llseek = generic_file_llseek, \
  }
  
  struct lbs_debugfs_files {
  	const char *name;
  	umode_t perm;
  	struct file_operations fops;
  };
  
  static const struct lbs_debugfs_files debugfs_files[] = {
  	{ "info", 0444, FOPS(lbs_dev_info, write_file_dummy), },
  	{ "sleepparams", 0644, FOPS(lbs_sleepparams_read,
  				lbs_sleepparams_write), },
  	{ "hostsleep", 0644, FOPS(lbs_host_sleep_read,
  				lbs_host_sleep_write), },
  };
  
  static const struct lbs_debugfs_files debugfs_events_files[] = {
  	{"low_rssi", 0644, FOPS(lbs_lowrssi_read,
  				lbs_lowrssi_write), },
  	{"low_snr", 0644, FOPS(lbs_lowsnr_read,
  				lbs_lowsnr_write), },
  	{"failure_count", 0644, FOPS(lbs_failcount_read,
  				lbs_failcount_write), },
  	{"beacon_missed", 0644, FOPS(lbs_bcnmiss_read,
  				lbs_bcnmiss_write), },
  	{"high_rssi", 0644, FOPS(lbs_highrssi_read,
  				lbs_highrssi_write), },
  	{"high_snr", 0644, FOPS(lbs_highsnr_read,
  				lbs_highsnr_write), },
  };
  
  static const struct lbs_debugfs_files debugfs_regs_files[] = {
  	{"rdmac", 0644, FOPS(lbs_rdmac_read, lbs_rdmac_write), },
  	{"wrmac", 0600, FOPS(NULL, lbs_wrmac_write), },
  	{"rdbbp", 0644, FOPS(lbs_rdbbp_read, lbs_rdbbp_write), },
  	{"wrbbp", 0600, FOPS(NULL, lbs_wrbbp_write), },
  	{"rdrf", 0644, FOPS(lbs_rdrf_read, lbs_rdrf_write), },
  	{"wrrf", 0600, FOPS(NULL, lbs_wrrf_write), },
  };
  
  void lbs_debugfs_init(void)
  {
  	if (!lbs_dir)
  		lbs_dir = debugfs_create_dir("lbs_wireless", NULL);
  }
  
  void lbs_debugfs_remove(void)
  {
  	if (lbs_dir)
  		 debugfs_remove(lbs_dir);
  }
  
  void lbs_debugfs_init_one(struct lbs_private *priv, struct net_device *dev)
  {
  	int i;
  	const struct lbs_debugfs_files *files;
  	if (!lbs_dir)
  		goto exit;
  
  	priv->debugfs_dir = debugfs_create_dir(dev->name, lbs_dir);
  	if (!priv->debugfs_dir)
  		goto exit;
  
  	for (i=0; i<ARRAY_SIZE(debugfs_files); i++) {
  		files = &debugfs_files[i];
  		priv->debugfs_files[i] = debugfs_create_file(files->name,
  							     files->perm,
  							     priv->debugfs_dir,
  							     priv,
  							     &files->fops);
  	}
  
  	priv->events_dir = debugfs_create_dir("subscribed_events", priv->debugfs_dir);
  	if (!priv->events_dir)
  		goto exit;
  
  	for (i=0; i<ARRAY_SIZE(debugfs_events_files); i++) {
  		files = &debugfs_events_files[i];
  		priv->debugfs_events_files[i] = debugfs_create_file(files->name,
  							     files->perm,
  							     priv->events_dir,
  							     priv,
  							     &files->fops);
  	}
  
  	priv->regs_dir = debugfs_create_dir("registers", priv->debugfs_dir);
  	if (!priv->regs_dir)
  		goto exit;
  
  	for (i=0; i<ARRAY_SIZE(debugfs_regs_files); i++) {
  		files = &debugfs_regs_files[i];
  		priv->debugfs_regs_files[i] = debugfs_create_file(files->name,
  							     files->perm,
  							     priv->regs_dir,
  							     priv,
  							     &files->fops);
  	}
  
  #ifdef PROC_DEBUG
  	lbs_debug_init(priv);
  #endif
  exit:
  	return;
  }
  
  void lbs_debugfs_remove_one(struct lbs_private *priv)
  {
  	int i;
  
  	for(i=0; i<ARRAY_SIZE(debugfs_regs_files); i++)
  		debugfs_remove(priv->debugfs_regs_files[i]);
  
  	debugfs_remove(priv->regs_dir);
  
  	for(i=0; i<ARRAY_SIZE(debugfs_events_files); i++)
  		debugfs_remove(priv->debugfs_events_files[i]);
  
  	debugfs_remove(priv->events_dir);
  #ifdef PROC_DEBUG
  	debugfs_remove(priv->debugfs_debug);
  #endif
  	for(i=0; i<ARRAY_SIZE(debugfs_files); i++)
  		debugfs_remove(priv->debugfs_files[i]);
  	debugfs_remove(priv->debugfs_dir);
  }
  
  
  
  /* debug entry */
  
  #ifdef PROC_DEBUG
  
  #define item_size(n)	(FIELD_SIZEOF(struct lbs_private, n))
  #define item_addr(n)	(offsetof(struct lbs_private, n))
  
  
  struct debug_data {
  	char name[32];
  	u32 size;
  	size_t addr;
  };
  
  /* To debug any member of struct lbs_private, simply add one line here.
   */
  static struct debug_data items[] = {
  	{"psmode", item_size(psmode), item_addr(psmode)},
  	{"psstate", item_size(psstate), item_addr(psstate)},
  };
  
  static int num_of_items = ARRAY_SIZE(items);
  
  /**
   * lbs_debugfs_read - proc read function
   *
   * @file:	file to read
   * @userbuf:	pointer to buffer
   * @count:	number of bytes to read
   * @ppos:	read data starting position
   *
   * returns:	amount of data read or negative error code
   */
  static ssize_t lbs_debugfs_read(struct file *file, char __user *userbuf,
  			size_t count, loff_t *ppos)
  {
  	int val = 0;
  	size_t pos = 0;
  	ssize_t res;
  	char *p;
  	int i;
  	struct debug_data *d;
  	unsigned long addr = get_zeroed_page(GFP_KERNEL);
  	char *buf = (char *)addr;
  	if (!buf)
  		return -ENOMEM;
  
  	p = buf;
  
  	d = file->private_data;
  
  	for (i = 0; i < num_of_items; i++) {
  		if (d[i].size == 1)
  			val = *((u8 *) d[i].addr);
  		else if (d[i].size == 2)
  			val = *((u16 *) d[i].addr);
  		else if (d[i].size == 4)
  			val = *((u32 *) d[i].addr);
  		else if (d[i].size == 8)
  			val = *((u64 *) d[i].addr);
  
  		pos += sprintf(p + pos, "%s=%d\n", d[i].name, val);
  	}
  
  	res = simple_read_from_buffer(userbuf, count, ppos, p, pos);
  
  	free_page(addr);
  	return res;
  }
  
  /**
   * lbs_debugfs_write - proc write function
   *
   * @f:		file pointer
   * @buf:	pointer to data buffer
   * @cnt:	data number to write
   * @ppos:	file position
   *
   * returns:	amount of data written
   */
  static ssize_t lbs_debugfs_write(struct file *f, const char __user *buf,
  			    size_t cnt, loff_t *ppos)
  {
  	int r, i;
  	char *pdata;
  	char *p;
  	char *p0;
  	char *p1;
  	char *p2;
  	struct debug_data *d = f->private_data;
  
  	pdata = kmalloc(cnt, GFP_KERNEL);
  	if (pdata == NULL)
  		return 0;
  
  	if (copy_from_user(pdata, buf, cnt)) {
  		lbs_deb_debugfs("Copy from user failed\n");
  		kfree(pdata);
  		return 0;
  	}
  
  	p0 = pdata;
  	for (i = 0; i < num_of_items; i++) {
  		do {
  			p = strstr(p0, d[i].name);
  			if (p == NULL)
  				break;
  			p1 = strchr(p, '\n');
  			if (p1 == NULL)
  				break;
  			p0 = p1++;
  			p2 = strchr(p, '=');
  			if (!p2)
  				break;
  			p2++;
  			r = simple_strtoul(p2, NULL, 0);
  			if (d[i].size == 1)
  				*((u8 *) d[i].addr) = (u8) r;
  			else if (d[i].size == 2)
  				*((u16 *) d[i].addr) = (u16) r;
  			else if (d[i].size == 4)
  				*((u32 *) d[i].addr) = (u32) r;
  			else if (d[i].size == 8)
  				*((u64 *) d[i].addr) = (u64) r;
  			break;
  		} while (1);
  	}
  	kfree(pdata);
  
  	return (ssize_t)cnt;
  }
  
  static const struct file_operations lbs_debug_fops = {
  	.owner = THIS_MODULE,
  	.open = simple_open,
  	.write = lbs_debugfs_write,
  	.read = lbs_debugfs_read,
  	.llseek = default_llseek,
  };
  
  /**
   * lbs_debug_init - create debug proc file
   *
   * @priv:	pointer to &struct lbs_private
   *
   * returns:	N/A
   */
  static void lbs_debug_init(struct lbs_private *priv)
  {
  	int i;
  
  	if (!priv->debugfs_dir)
  		return;
  
  	for (i = 0; i < num_of_items; i++)
  		items[i].addr += (size_t) priv;
  
  	priv->debugfs_debug = debugfs_create_file("debug", 0644,
  						  priv->debugfs_dir, &items[0],
  						  &lbs_debug_fops);
  }
  #endif
  