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/*
* Copyright (c) 2008-2011 Atheros Communications Inc.
* Copyright (c) 2011 Neratec Solutions AG
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <linux/debugfs.h>
#include <linux/export.h>
#include "ath9k.h"
#include "dfs_debug.h"
#define ATH9K_DFS_STAT(s, p) \
len += snprintf(buf + len, size - len, "%28s : %10u\n", s, \
sc->debug.stats.dfs_stats.p);
static ssize_t read_file_dfs(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath_softc *sc = file->private_data;
struct ath9k_hw_version *hw_ver = &sc->sc_ah->hw_version;
char *buf;
unsigned int len = 0, size = 8000;
ssize_t retval = 0;
buf = kzalloc(size, GFP_KERNEL);
if (buf == NULL)
return -ENOMEM;
len += snprintf(buf + len, size - len, "DFS support for "
"macVersion = 0x%x, macRev = 0x%x: %s\n",
hw_ver->macVersion, hw_ver->macRev,
(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_DFS) ?
"enabled" : "disabled");
ATH9K_DFS_STAT("DFS pulses detected ", pulses_detected);
ATH9K_DFS_STAT("Datalen discards ", datalen_discards);
ATH9K_DFS_STAT("RSSI discards ", rssi_discards);
ATH9K_DFS_STAT("BW info discards ", bwinfo_discards);
ATH9K_DFS_STAT("Primary channel pulses ", pri_phy_errors);
ATH9K_DFS_STAT("Secondary channel pulses", ext_phy_errors);
ATH9K_DFS_STAT("Dual channel pulses ", dc_phy_errors);
if (len > size)
len = size;
retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
kfree(buf);
return retval;
}
static int ath9k_dfs_debugfs_open(struct inode *inode, struct file *file)
{
file->private_data = inode->i_private;
return 0;
}
static const struct file_operations fops_dfs_stats = {
.read = read_file_dfs,
.open = ath9k_dfs_debugfs_open,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
void ath9k_dfs_init_debug(struct ath_softc *sc)
{
debugfs_create_file("dfs_stats", S_IRUSR,
sc->debug.debugfs_phy, sc, &fops_dfs_stats);
}
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