diff options
Diffstat (limited to 'target/linux/ramips/files/drivers/net/ethernet/ramips/ramips_debugfs.c')
| -rw-r--r-- | target/linux/ramips/files/drivers/net/ethernet/ramips/ramips_debugfs.c | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/target/linux/ramips/files/drivers/net/ethernet/ramips/ramips_debugfs.c b/target/linux/ramips/files/drivers/net/ethernet/ramips/ramips_debugfs.c new file mode 100644 index 000000000..20afcf502 --- /dev/null +++ b/target/linux/ramips/files/drivers/net/ethernet/ramips/ramips_debugfs.c @@ -0,0 +1,127 @@ +/* + * 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; +} |