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// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
/* Copyright 2015 Freescale Semiconductor Inc.
* Copyright 2018-2019 NXP
*/
#include <linux/module.h>
#include <linux/debugfs.h>
#include "dpaa2-eth.h"
#include "dpaa2-eth-debugfs.h"
#define DPAA2_ETH_DBG_ROOT "dpaa2-eth"
static struct dentry *dpaa2_dbg_root;
static int dpaa2_dbg_cpu_show(struct seq_file *file, void *offset)
{
struct dpaa2_eth_priv *priv = (struct dpaa2_eth_priv *)file->private;
struct rtnl_link_stats64 *stats;
struct dpaa2_eth_drv_stats *extras;
int i;
seq_printf(file, "Per-CPU stats for %s\n", priv->net_dev->name);
seq_printf(file, "%s%16s%16s%16s%16s%16s%16s%16s%16s%16s\n",
"CPU", "Rx", "Rx Err", "Rx SG", "Tx", "Tx Err", "Tx conf",
"Tx SG", "Tx realloc", "Enq busy");
for_each_online_cpu(i) {
stats = per_cpu_ptr(priv->percpu_stats, i);
extras = per_cpu_ptr(priv->percpu_extras, i);
seq_printf(file, "%3d%16llu%16llu%16llu%16llu%16llu%16llu%16llu%16llu%16llu\n",
i,
stats->rx_packets,
stats->rx_errors,
extras->rx_sg_frames,
stats->tx_packets,
stats->tx_errors,
extras->tx_conf_frames,
extras->tx_sg_frames,
extras->tx_reallocs,
extras->tx_portal_busy);
}
return 0;
}
static int dpaa2_dbg_cpu_open(struct inode *inode, struct file *file)
{
int err;
struct dpaa2_eth_priv *priv = (struct dpaa2_eth_priv *)inode->i_private;
err = single_open(file, dpaa2_dbg_cpu_show, priv);
if (err < 0)
netdev_err(priv->net_dev, "single_open() failed\n");
return err;
}
static const struct file_operations dpaa2_dbg_cpu_ops = {
.open = dpaa2_dbg_cpu_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static char *fq_type_to_str(struct dpaa2_eth_fq *fq)
{
switch (fq->type) {
case DPAA2_RX_FQ:
return "Rx";
case DPAA2_TX_CONF_FQ:
return "Tx conf";
default:
return "N/A";
}
}
static int dpaa2_dbg_fqs_show(struct seq_file *file, void *offset)
{
struct dpaa2_eth_priv *priv = (struct dpaa2_eth_priv *)file->private;
struct dpaa2_eth_fq *fq;
u32 fcnt, bcnt;
int i, err;
seq_printf(file, "FQ stats for %s:\n", priv->net_dev->name);
seq_printf(file, "%s%16s%16s%16s%16s%16s\n",
"VFQID", "CPU", "TC", "Type", "Frames", "Pending frames");
for (i = 0; i < priv->num_fqs; i++) {
fq = &priv->fq[i];
err = dpaa2_io_query_fq_count(NULL, fq->fqid, &fcnt, &bcnt);
if (err)
fcnt = 0;
/* Skip FQs with no traffic */
if (!fq->stats.frames && !fcnt)
continue;
seq_printf(file, "%5d%16d%16d%16s%16llu%16u\n",
fq->fqid,
fq->target_cpu,
fq->tc,
fq_type_to_str(fq),
fq->stats.frames,
fcnt);
}
return 0;
}
static int dpaa2_dbg_fqs_open(struct inode *inode, struct file *file)
{
int err;
struct dpaa2_eth_priv *priv = (struct dpaa2_eth_priv *)inode->i_private;
err = single_open(file, dpaa2_dbg_fqs_show, priv);
if (err < 0)
netdev_err(priv->net_dev, "single_open() failed\n");
return err;
}
static const struct file_operations dpaa2_dbg_fq_ops = {
.open = dpaa2_dbg_fqs_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int dpaa2_dbg_ch_show(struct seq_file *file, void *offset)
{
struct dpaa2_eth_priv *priv = (struct dpaa2_eth_priv *)file->private;
struct dpaa2_eth_channel *ch;
int i;
seq_printf(file, "Channel stats for %s:\n", priv->net_dev->name);
seq_printf(file, "%s%16s%16s%16s%16s%16s%16s\n",
"CHID", "CPU", "Deq busy", "Frames", "CDANs",
"Avg Frm/CDAN", "Buf count");
for (i = 0; i < priv->num_channels; i++) {
ch = priv->channel[i];
seq_printf(file, "%4d%16d%16llu%16llu%16llu%16llu%16d\n",
ch->ch_id,
ch->nctx.desired_cpu,
ch->stats.dequeue_portal_busy,
ch->stats.frames,
ch->stats.cdan,
div64_u64(ch->stats.frames, ch->stats.cdan),
ch->buf_count);
}
return 0;
}
static int dpaa2_dbg_ch_open(struct inode *inode, struct file *file)
{
int err;
struct dpaa2_eth_priv *priv = (struct dpaa2_eth_priv *)inode->i_private;
err = single_open(file, dpaa2_dbg_ch_show, priv);
if (err < 0)
netdev_err(priv->net_dev, "single_open() failed\n");
return err;
}
static const struct file_operations dpaa2_dbg_ch_ops = {
.open = dpaa2_dbg_ch_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
void dpaa2_dbg_add(struct dpaa2_eth_priv *priv)
{
struct dentry *dir;
/* Create a directory for the interface */
dir = debugfs_create_dir(priv->net_dev->name, dpaa2_dbg_root);
priv->dbg.dir = dir;
/* per-cpu stats file */
debugfs_create_file("cpu_stats", 0444, dir, priv, &dpaa2_dbg_cpu_ops);
/* per-fq stats file */
debugfs_create_file("fq_stats", 0444, dir, priv, &dpaa2_dbg_fq_ops);
/* per-fq stats file */
debugfs_create_file("ch_stats", 0444, dir, priv, &dpaa2_dbg_ch_ops);
}
void dpaa2_dbg_remove(struct dpaa2_eth_priv *priv)
{
debugfs_remove_recursive(priv->dbg.dir);
}
void dpaa2_eth_dbg_init(void)
{
dpaa2_dbg_root = debugfs_create_dir(DPAA2_ETH_DBG_ROOT, NULL);
pr_debug("DPAA2-ETH: debugfs created\n");
}
void dpaa2_eth_dbg_exit(void)
{
debugfs_remove(dpaa2_dbg_root);
}
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