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authorGabor Juhos <juhosg@openwrt.org>2010-01-06 15:24:01 +0000
committerGabor Juhos <juhosg@openwrt.org>2010-01-06 15:24:01 +0000
commit51c76750fc518fe382b40d793bb4202cd23ded29 (patch)
tree3664787bca74c993eead6071f6f250bc07992565
parentf5111bd23b43e267196933086eea9a230cf41d87 (diff)
downloadmtk-20170518-51c76750fc518fe382b40d793bb4202cd23ded29.zip
mtk-20170518-51c76750fc518fe382b40d793bb4202cd23ded29.tar.gz
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ar71xx: add detailed interrupt statistics for the ag71xx driver
SVN-Revision: 19054
-rw-r--r--target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx.h15
-rw-r--r--target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_debugfs.c86
-rw-r--r--target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c2
3 files changed, 92 insertions, 11 deletions
diff --git a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx.h b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx.h
index b2f710e..90475b6 100644
--- a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx.h
+++ b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx.h
@@ -109,8 +109,20 @@ struct ag71xx_mdio {
struct ag71xx_mdio_platform_data *pdata;
};
+struct ag71xx_int_stats {
+ unsigned long rx_pr;
+ unsigned long rx_be;
+ unsigned long rx_of;
+ unsigned long tx_ps;
+ unsigned long tx_be;
+ unsigned long tx_ur;
+ unsigned long total;
+};
+
struct ag71xx_debug {
struct dentry *debugfs_dir;
+ struct dentry *debugfs_int_stats;
+ struct ag71xx_int_stats int_stats;
};
struct ag71xx {
@@ -463,11 +475,14 @@ int ag71xx_debugfs_root_init(void);
void ag71xx_debugfs_root_exit(void);
int ag71xx_debugfs_init(struct ag71xx *ag);
void ag71xx_debugfs_exit(struct ag71xx *ag);
+void ag71xx_debugfs_update_int_stats(struct ag71xx *ag, u32 status);
#else
static inline int ag71xx_debugfs_root_init(void) { return 0; }
static inline void ag71xx_debugfs_root_exit(void) {}
static inline int ag71xx_debugfs_init(struct ag71xx *ag) { return 0; }
static inline void ag71xx_debugfs_exit(struct ag71xx *ag) {}
+static inline void ag71xx_debug_update_int_stats(struct ag71xx *ag,
+ u32 status) {}
#endif /* CONFIG_AG71XX_DEBUG_FS */
#endif /* _AG71XX_H */
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 88101e4..83bd4b0 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;
+}
diff --git a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c
index 869373a..97a677c 100644
--- a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c
+++ b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c
@@ -795,6 +795,8 @@ static irqreturn_t ag71xx_interrupt(int irq, void *dev_id)
napi_schedule(&ag->napi);
}
+ ag71xx_debugfs_update_int_stats(ag, status);
+
return IRQ_HANDLED;
}