2 * Atheros AR71xx built-in ethernet mac driver
4 * Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
5 * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
7 * Based on Atheros' AG7100 driver
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License version 2 as published
11 * by the Free Software Foundation.
14 #include <linux/debugfs.h>
18 static struct dentry
*ag71xx_debugfs_root
;
20 static int ag71xx_debugfs_generic_open(struct inode
*inode
, struct file
*file
)
22 file
->private_data
= inode
->i_private
;
26 void ag71xx_debugfs_update_int_stats(struct ag71xx
*ag
, u32 status
)
29 ag
->debug
.int_stats
.total
++;
30 if (status
& AG71XX_INT_TX_PS
)
31 ag
->debug
.int_stats
.tx_ps
++;
32 if (status
& AG71XX_INT_TX_UR
)
33 ag
->debug
.int_stats
.tx_ur
++;
34 if (status
& AG71XX_INT_TX_BE
)
35 ag
->debug
.int_stats
.tx_be
++;
36 if (status
& AG71XX_INT_RX_PR
)
37 ag
->debug
.int_stats
.rx_pr
++;
38 if (status
& AG71XX_INT_RX_OF
)
39 ag
->debug
.int_stats
.rx_of
++;
40 if (status
& AG71XX_INT_RX_BE
)
41 ag
->debug
.int_stats
.rx_be
++;
44 static ssize_t
read_file_int_stats(struct file
*file
, char __user
*user_buf
,
45 size_t count
, loff_t
*ppos
)
47 #define PR_INT_STAT(_label, _field) \
48 len += snprintf(buf + len, sizeof(buf) - len, \
49 "%20s: %10lu\n", _label, ag->debug.int_stats._field);
51 struct ag71xx
*ag
= file
->private_data
;
55 PR_INT_STAT("TX Packet Sent", tx_ps
);
56 PR_INT_STAT("TX Underrun", tx_ur
);
57 PR_INT_STAT("TX Bus Error", tx_be
);
58 PR_INT_STAT("RX Packet Received", rx_pr
);
59 PR_INT_STAT("RX Overflow", rx_of
);
60 PR_INT_STAT("RX Bus Error", rx_be
);
61 len
+= snprintf(buf
+ len
, sizeof(buf
) - len
, "\n");
62 PR_INT_STAT("Total", total
);
64 return simple_read_from_buffer(user_buf
, count
, ppos
, buf
, len
);
68 static const struct file_operations ag71xx_fops_int_stats
= {
69 .open
= ag71xx_debugfs_generic_open
,
70 .read
= read_file_int_stats
,
74 void ag71xx_debugfs_exit(struct ag71xx
*ag
)
76 debugfs_remove(ag
->debug
.debugfs_int_stats
);
77 debugfs_remove(ag
->debug
.debugfs_dir
);
80 int ag71xx_debugfs_init(struct ag71xx
*ag
)
82 ag
->debug
.debugfs_dir
= debugfs_create_dir(ag
->dev
->name
,
84 if (!ag
->debug
.debugfs_dir
)
87 ag
->debug
.debugfs_int_stats
=
88 debugfs_create_file("int_stats",
90 ag
->debug
.debugfs_dir
,
92 &ag71xx_fops_int_stats
);
93 if (!ag
->debug
.debugfs_int_stats
)
99 ag71xx_debugfs_exit(ag
);
103 int ag71xx_debugfs_root_init(void)
105 if (ag71xx_debugfs_root
)
108 ag71xx_debugfs_root
= debugfs_create_dir(KBUILD_MODNAME
, NULL
);
109 if (!ag71xx_debugfs_root
)
115 void ag71xx_debugfs_root_exit(void)
117 debugfs_remove(ag71xx_debugfs_root
);
118 ag71xx_debugfs_root
= NULL
;