--- /dev/null
+// 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\n",
+ "VFQID", "CPU", "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;
+
+ seq_printf(file, "%5d%16d%16s%16llu%16u\n",
+ fq->fqid,
+ fq->target_cpu,
+ 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\n",
+ "CHID", "CPU", "Deq busy", "CDANs", "Buf count");
+
+ for (i = 0; i < priv->num_channels; i++) {
+ ch = priv->channel[i];
+ seq_printf(file, "%4d%16d%16llu%16llu%16d\n",
+ ch->ch_id,
+ ch->nctx.desired_cpu,
+ ch->stats.dequeue_portal_busy,
+ 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)
+{
+ if (!dpaa2_dbg_root)
+ return;
+
+ /* Create a directory for the interface */
+ priv->dbg.dir = debugfs_create_dir(priv->net_dev->name,
+ dpaa2_dbg_root);
+ if (!priv->dbg.dir) {
+ netdev_err(priv->net_dev, "debugfs_create_dir() failed\n");
+ return;
+ }
+
+ /* per-cpu stats file */
+ priv->dbg.cpu_stats = debugfs_create_file("cpu_stats", 0444,
+ priv->dbg.dir, priv,
+ &dpaa2_dbg_cpu_ops);
+ if (!priv->dbg.cpu_stats) {
+ netdev_err(priv->net_dev, "debugfs_create_file() failed\n");
+ goto err_cpu_stats;
+ }
+
+ /* per-fq stats file */
+ priv->dbg.fq_stats = debugfs_create_file("fq_stats", 0444,
+ priv->dbg.dir, priv,
+ &dpaa2_dbg_fq_ops);
+ if (!priv->dbg.fq_stats) {
+ netdev_err(priv->net_dev, "debugfs_create_file() failed\n");
+ goto err_fq_stats;
+ }
+
+ /* per-fq stats file */
+ priv->dbg.ch_stats = debugfs_create_file("ch_stats", 0444,
+ priv->dbg.dir, priv,
+ &dpaa2_dbg_ch_ops);
+ if (!priv->dbg.fq_stats) {
+ netdev_err(priv->net_dev, "debugfs_create_file() failed\n");
+ goto err_ch_stats;
+ }
+
+ return;
+
+err_ch_stats:
+ debugfs_remove(priv->dbg.fq_stats);
+err_fq_stats:
+ debugfs_remove(priv->dbg.cpu_stats);
+err_cpu_stats:
+ debugfs_remove(priv->dbg.dir);
+}
+
+void dpaa2_dbg_remove(struct dpaa2_eth_priv *priv)
+{
+ debugfs_remove(priv->dbg.fq_stats);
+ debugfs_remove(priv->dbg.ch_stats);
+ debugfs_remove(priv->dbg.cpu_stats);
+ debugfs_remove(priv->dbg.dir);
+}
+
+void dpaa2_eth_dbg_init(void)
+{
+ dpaa2_dbg_root = debugfs_create_dir(DPAA2_ETH_DBG_ROOT, NULL);
+ if (!dpaa2_dbg_root) {
+ pr_err("DPAA2-ETH: debugfs create failed\n");
+ return;
+ }
+
+ pr_debug("DPAA2-ETH: debugfs created\n");
+}
+
+void dpaa2_eth_dbg_exit(void)
+{
+ debugfs_remove(dpaa2_dbg_root);
+}
projects / platform / kernel / linux-rpi.git / commitdiff