diff options
author | Gabor Juhos <juhosg@openwrt.org> | 2010-01-06 15:24:01 +0000 |
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committer | Gabor Juhos <juhosg@openwrt.org> | 2010-01-06 15:24:01 +0000 |
commit | 51c76750fc518fe382b40d793bb4202cd23ded29 (patch) | |
tree | 3664787bca74c993eead6071f6f250bc07992565 /target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_debugfs.c | |
parent | f5111bd23b43e267196933086eea9a230cf41d87 (diff) | |
download | upstream-51c76750fc518fe382b40d793bb4202cd23ded29.tar.gz upstream-51c76750fc518fe382b40d793bb4202cd23ded29.tar.bz2 upstream-51c76750fc518fe382b40d793bb4202cd23ded29.zip |
ar71xx: add detailed interrupt statistics for the ag71xx driver
SVN-Revision: 19054
Diffstat (limited to 'target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_debugfs.c')
-rw-r--r-- | target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_debugfs.c | 86 |
1 files changed, 75 insertions, 11 deletions
diff --git a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_debugfs.c b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_debugfs.c index 88101e47d5..83bd4b0e11 100644 --- a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_debugfs.c +++ b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_debugfs.c @@ -17,26 +17,63 @@ static struct dentry *ag71xx_debugfs_root; -int ag71xx_debugfs_root_init(void) +static int ag71xx_debugfs_generic_open(struct inode *inode, struct file *file) { - if (ag71xx_debugfs_root) - return -EBUSY; - - ag71xx_debugfs_root = debugfs_create_dir(KBUILD_MODNAME, NULL); - if (!ag71xx_debugfs_root) - return -ENOENT; - + file->private_data = inode->i_private; return 0; } -void ag71xx_debugfs_root_exit(void) +void ag71xx_debugfs_update_int_stats(struct ag71xx *ag, u32 status) { - debugfs_remove(ag71xx_debugfs_root); - ag71xx_debugfs_root = NULL; + 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); } @@ -47,9 +84,36 @@ int ag71xx_debugfs_init(struct ag71xx *ag) 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; +} |