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/*
* Ralink SoC ethernet driver debugfs code
*
* Copyright (C) 2011-2012 Gabor Juhos <juhosg@openwrt.org>
*
* 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 <linux/module.h>
#include <linux/phy.h>
#include "ramips_eth.h"
static struct dentry *raeth_debugfs_root;
static int raeth_debugfs_generic_open(struct inode *inode, struct file *file)
{
file->private_data = inode->i_private;
return 0;
}
void raeth_debugfs_update_int_stats(struct raeth_priv *re, u32 status)
{
re->debug.int_stats.total += !!status;
re->debug.int_stats.rx_delayed += !!(status & RAMIPS_RX_DLY_INT);
re->debug.int_stats.rx_done0 += !!(status & RAMIPS_RX_DONE_INT0);
re->debug.int_stats.rx_coherent += !!(status & RAMIPS_RX_COHERENT);
re->debug.int_stats.tx_delayed += !!(status & RAMIPS_TX_DLY_INT);
re->debug.int_stats.tx_done0 += !!(status & RAMIPS_TX_DONE_INT0);
re->debug.int_stats.tx_done1 += !!(status & RAMIPS_TX_DONE_INT1);
re->debug.int_stats.tx_done2 += !!(status & RAMIPS_TX_DONE_INT2);
re->debug.int_stats.tx_done3 += !!(status & RAMIPS_TX_DONE_INT3);
re->debug.int_stats.tx_coherent += !!(status & RAMIPS_TX_COHERENT);
re->debug.int_stats.pse_fq_empty += !!(status & RAMIPS_PSE_FQ_EMPTY);
re->debug.int_stats.pse_p0_fc += !!(status & RAMIPS_PSE_P0_FC);
re->debug.int_stats.pse_p1_fc += !!(status & RAMIPS_PSE_P1_FC);
re->debug.int_stats.pse_p2_fc += !!(status & RAMIPS_PSE_P2_FC);
re->debug.int_stats.pse_buf_drop += !!(status & RAMIPS_PSE_BUF_DROP);
}
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, \
"%-18s: %10lu\n", _label, re->debug.int_stats._field);
struct raeth_priv *re = file->private_data;
char buf[512];
unsigned int len = 0;
unsigned long flags;
spin_lock_irqsave(&re->page_lock, flags);
PR_INT_STAT("RX Delayed", rx_delayed);
PR_INT_STAT("RX Done 0", rx_done0);
PR_INT_STAT("RX Coherent", rx_coherent);
PR_INT_STAT("TX Delayed", tx_delayed);
PR_INT_STAT("TX Done 0", tx_done0);
PR_INT_STAT("TX Done 1", tx_done1);
PR_INT_STAT("TX Done 2", tx_done2);
PR_INT_STAT("TX Done 3", tx_done3);
PR_INT_STAT("TX Coherent", tx_coherent);
PR_INT_STAT("PSE FQ empty", pse_fq_empty);
PR_INT_STAT("CDMA Flow control", pse_p0_fc);
PR_INT_STAT("GDMA1 Flow control", pse_p1_fc);
PR_INT_STAT("GDMA2 Flow control", pse_p2_fc);
PR_INT_STAT("PSE discard", pse_buf_drop);
len += snprintf(buf + len, sizeof(buf) - len, "\n");
PR_INT_STAT("Total", total);
spin_unlock_irqrestore(&re->page_lock, flags);
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
#undef PR_INT_STAT
}
static const struct file_operations raeth_fops_int_stats = {
.open = raeth_debugfs_generic_open,
.read = read_file_int_stats,
.owner = THIS_MODULE
};
void raeth_debugfs_exit(struct raeth_priv *re)
{
debugfs_remove_recursive(re->debug.debugfs_dir);
}
int raeth_debugfs_init(struct raeth_priv *re)
{
re->debug.debugfs_dir = debugfs_create_dir(re->netdev->name,
raeth_debugfs_root);
if (!re->debug.debugfs_dir)
return -ENOMEM;
debugfs_create_file("int_stats", S_IRUGO, re->debug.debugfs_dir,
re, &raeth_fops_int_stats);
return 0;
}
int raeth_debugfs_root_init(void)
{
if (raeth_debugfs_root)
return -EBUSY;
raeth_debugfs_root = debugfs_create_dir("raeth", NULL);
if (!raeth_debugfs_root)
return -ENOENT;
return 0;
}
void raeth_debugfs_root_exit(void)
{
debugfs_remove(raeth_debugfs_root);
raeth_debugfs_root = NULL;
}
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