Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
2/* Copyright 2019 NXP */
3
4#include <linux/module.h>
5#include <linux/device.h>
6#include <linux/debugfs.h>
7#include "dpseci-debugfs.h"
8
9static int dpseci_dbg_fqs_show(struct seq_file *file, void *offset)
10{
11 struct dpaa2_caam_priv *priv = (struct dpaa2_caam_priv *)file->private;
12 u32 fqid, fcnt, bcnt;
13 int i, err;
14
15 seq_printf(file, "FQ stats for %s:\n", dev_name(priv->dev));
16 seq_printf(file, "%s%16s%16s\n",
17 "Rx-VFQID",
18 "Pending frames",
19 "Pending bytes");
20
21 for (i = 0; i < priv->num_pairs; i++) {
22 fqid = priv->rx_queue_attr[i].fqid;
23 err = dpaa2_io_query_fq_count(NULL, fqid, &fcnt, &bcnt);
24 if (err)
25 continue;
26
27 seq_printf(file, "%5d%16u%16u\n", fqid, fcnt, bcnt);
28 }
29
30 seq_printf(file, "%s%16s%16s\n",
31 "Tx-VFQID",
32 "Pending frames",
33 "Pending bytes");
34
35 for (i = 0; i < priv->num_pairs; i++) {
36 fqid = priv->tx_queue_attr[i].fqid;
37 err = dpaa2_io_query_fq_count(NULL, fqid, &fcnt, &bcnt);
38 if (err)
39 continue;
40
41 seq_printf(file, "%5d%16u%16u\n", fqid, fcnt, bcnt);
42 }
43
44 return 0;
45}
46
47static int dpseci_dbg_fqs_open(struct inode *inode, struct file *file)
48{
49 int err;
50 struct dpaa2_caam_priv *priv;
51
52 priv = (struct dpaa2_caam_priv *)inode->i_private;
53
54 err = single_open(file, dpseci_dbg_fqs_show, priv);
55 if (err < 0)
56 dev_err(priv->dev, "single_open() failed\n");
57
58 return err;
59}
60
61static const struct file_operations dpseci_dbg_fq_ops = {
62 .open = dpseci_dbg_fqs_open,
63 .read = seq_read,
64 .llseek = seq_lseek,
65 .release = single_release,
66};
67
68void dpaa2_dpseci_debugfs_init(struct dpaa2_caam_priv *priv)
69{
70 priv->dfs_root = debugfs_create_dir(dev_name(priv->dev), NULL);
71
72 debugfs_create_file("fq_stats", 0444, priv->dfs_root, priv,
73 &dpseci_dbg_fq_ops);
74}
75
76void dpaa2_dpseci_debugfs_exit(struct dpaa2_caam_priv *priv)
77{
78 debugfs_remove_recursive(priv->dfs_root);
79}