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/*
* Atheros AR71xx built-in ethernet mac driver
*
* Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
*
* Based on Atheros' AG7100 driver
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*/
#include <linux/debugfs.h>
#include "ag71xx.h"
static struct dentry *ag71xx_debugfs_root;
static int ag71xx_debugfs_generic_open(struct inode *inode, struct file *file)
{
file->private_data = inode->i_private;
return 0;
}
void ag71xx_debugfs_update_int_stats(struct ag71xx *ag, u32 status)
{
if (status)
ag->debug.int_stats.total++;
if (status & AG71XX_INT_TX_PS)
ag->debug.int_stats.tx_ps++;
if (status & AG71XX_INT_TX_UR)
ag->debug.int_stats.tx_ur++;
if (status & AG71XX_INT_TX_BE)
ag->debug.int_stats.tx_be++;
if (status & AG71XX_INT_RX_PR)
ag->debug.int_stats.rx_pr++;
if (status & AG71XX_INT_RX_OF)
ag->debug.int_stats.rx_of++;
if (status & AG71XX_INT_RX_BE)
ag->debug.int_stats.rx_be++;
}
static ssize_t read_file_int_stats(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
#define PR_INT_STAT(_label, _field) \
len += snprintf(buf + len, sizeof(buf) - len, \
"%20s: %10lu\n", _label, ag->debug.int_stats._field);
struct ag71xx *ag = file->private_data;
char buf[256];
unsigned int len = 0;
PR_INT_STAT("TX Packet Sent", tx_ps);
PR_INT_STAT("TX Underrun", tx_ur);
PR_INT_STAT("TX Bus Error", tx_be);
PR_INT_STAT("RX Packet Received", rx_pr);
PR_INT_STAT("RX Overflow", rx_of);
PR_INT_STAT("RX Bus Error", rx_be);
len += snprintf(buf + len, sizeof(buf) - len, "\n");
PR_INT_STAT("Total", total);
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
#undef PR_INT_STAT
}
static const struct file_operations ag71xx_fops_int_stats = {
.open = ag71xx_debugfs_generic_open,
.read = read_file_int_stats,
.owner = THIS_MODULE
};
void ag71xx_debugfs_exit(struct ag71xx *ag)
{
debugfs_remove(ag->debug.debugfs_int_stats);
debugfs_remove(ag->debug.debugfs_dir);
}
int ag71xx_debugfs_init(struct ag71xx *ag)
{
ag->debug.debugfs_dir = debugfs_create_dir(ag->dev->name,
ag71xx_debugfs_root);
if (!ag->debug.debugfs_dir)
goto err;
ag->debug.debugfs_int_stats =
debugfs_create_file("int_stats",
S_IRUGO,
ag->debug.debugfs_dir,
ag,
&ag71xx_fops_int_stats);
if (!ag->debug.debugfs_int_stats)
goto err;
return 0;
err:
ag71xx_debugfs_exit(ag);
return -ENOMEM;
}
int ag71xx_debugfs_root_init(void)
{
if (ag71xx_debugfs_root)
return -EBUSY;
ag71xx_debugfs_root = debugfs_create_dir(KBUILD_MODNAME, NULL);
if (!ag71xx_debugfs_root)
return -ENOENT;
return 0;
}
void ag71xx_debugfs_root_exit(void)
{
debugfs_remove(ag71xx_debugfs_root);
ag71xx_debugfs_root = NULL;
}
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