mirror of https://github.com/hak5/openwrt.git
120 lines
2.9 KiB
C
120 lines
2.9 KiB
C
/*
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* Atheros AR71xx built-in ethernet mac driver
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*
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* Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
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* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
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*
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* Based on Atheros' AG7100 driver
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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*/
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#include <linux/debugfs.h>
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#include "ag71xx.h"
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static struct dentry *ag71xx_debugfs_root;
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static int ag71xx_debugfs_generic_open(struct inode *inode, struct file *file)
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{
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file->private_data = inode->i_private;
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return 0;
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}
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void ag71xx_debugfs_update_int_stats(struct ag71xx *ag, u32 status)
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{
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if (status)
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ag->debug.int_stats.total++;
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if (status & AG71XX_INT_TX_PS)
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ag->debug.int_stats.tx_ps++;
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if (status & AG71XX_INT_TX_UR)
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ag->debug.int_stats.tx_ur++;
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if (status & AG71XX_INT_TX_BE)
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ag->debug.int_stats.tx_be++;
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if (status & AG71XX_INT_RX_PR)
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ag->debug.int_stats.rx_pr++;
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if (status & AG71XX_INT_RX_OF)
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ag->debug.int_stats.rx_of++;
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if (status & AG71XX_INT_RX_BE)
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ag->debug.int_stats.rx_be++;
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}
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static ssize_t read_file_int_stats(struct file *file, char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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#define PR_INT_STAT(_label, _field) \
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len += snprintf(buf + len, sizeof(buf) - len, \
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"%20s: %10lu\n", _label, ag->debug.int_stats._field);
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struct ag71xx *ag = file->private_data;
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char buf[256];
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unsigned int len = 0;
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PR_INT_STAT("TX Packet Sent", tx_ps);
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PR_INT_STAT("TX Underrun", tx_ur);
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PR_INT_STAT("TX Bus Error", tx_be);
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PR_INT_STAT("RX Packet Received", rx_pr);
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PR_INT_STAT("RX Overflow", rx_of);
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PR_INT_STAT("RX Bus Error", rx_be);
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len += snprintf(buf + len, sizeof(buf) - len, "\n");
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PR_INT_STAT("Total", total);
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return simple_read_from_buffer(user_buf, count, ppos, buf, len);
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#undef PR_INT_STAT
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}
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static const struct file_operations ag71xx_fops_int_stats = {
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.open = ag71xx_debugfs_generic_open,
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.read = read_file_int_stats,
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.owner = THIS_MODULE
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};
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void ag71xx_debugfs_exit(struct ag71xx *ag)
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{
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debugfs_remove(ag->debug.debugfs_int_stats);
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debugfs_remove(ag->debug.debugfs_dir);
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}
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int ag71xx_debugfs_init(struct ag71xx *ag)
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{
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ag->debug.debugfs_dir = debugfs_create_dir(ag->dev->name,
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ag71xx_debugfs_root);
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if (!ag->debug.debugfs_dir)
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goto err;
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ag->debug.debugfs_int_stats =
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debugfs_create_file("int_stats",
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S_IRUGO,
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ag->debug.debugfs_dir,
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ag,
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&ag71xx_fops_int_stats);
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if (!ag->debug.debugfs_int_stats)
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goto err;
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return 0;
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err:
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ag71xx_debugfs_exit(ag);
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return -ENOMEM;
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}
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int ag71xx_debugfs_root_init(void)
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{
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if (ag71xx_debugfs_root)
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return -EBUSY;
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ag71xx_debugfs_root = debugfs_create_dir(KBUILD_MODNAME, NULL);
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if (!ag71xx_debugfs_root)
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return -ENOENT;
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return 0;
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}
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void ag71xx_debugfs_root_exit(void)
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{
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debugfs_remove(ag71xx_debugfs_root);
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ag71xx_debugfs_root = NULL;
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}
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