drivers/crypto/caam/dpseci-debugfs.c

Source file repositories/reference/linux-study-clean/drivers/crypto/caam/dpseci-debugfs.c

File Facts

System
Linux kernel
Corpus path
drivers/crypto/caam/dpseci-debugfs.c
Extension
.c
Size
1432 bytes
Lines
61
Domain
Driver Families
Bucket
drivers/crypto
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
/* Copyright 2019 NXP */

#include <linux/module.h>
#include <linux/device.h>
#include <linux/debugfs.h>
#include "dpseci-debugfs.h"

static int dpseci_dbg_fqs_show(struct seq_file *file, void *offset)
{
	struct dpaa2_caam_priv *priv = file->private;
	u32 fqid, fcnt, bcnt;
	int i, err;

	seq_printf(file, "FQ stats for %s:\n", dev_name(priv->dev));
	seq_printf(file, "%s%16s%16s\n",
		   "Rx-VFQID",
		   "Pending frames",
		   "Pending bytes");

	for (i = 0; i <  priv->num_pairs; i++) {
		fqid = priv->rx_queue_attr[i].fqid;
		err = dpaa2_io_query_fq_count(NULL, fqid, &fcnt, &bcnt);
		if (err)
			continue;

		seq_printf(file, "%5d%16u%16u\n", fqid, fcnt, bcnt);
	}

	seq_printf(file, "%s%16s%16s\n",
		   "Tx-VFQID",
		   "Pending frames",
		   "Pending bytes");

	for (i = 0; i <  priv->num_pairs; i++) {
		fqid = priv->tx_queue_attr[i].fqid;
		err = dpaa2_io_query_fq_count(NULL, fqid, &fcnt, &bcnt);
		if (err)
			continue;

		seq_printf(file, "%5d%16u%16u\n", fqid, fcnt, bcnt);
	}

	return 0;
}

DEFINE_SHOW_ATTRIBUTE(dpseci_dbg_fqs);

void dpaa2_dpseci_debugfs_init(struct dpaa2_caam_priv *priv)
{
	priv->dfs_root = debugfs_create_dir(dev_name(priv->dev), NULL);

	debugfs_create_file("fq_stats", 0444, priv->dfs_root, priv,
			    &dpseci_dbg_fqs_fops);
}

void dpaa2_dpseci_debugfs_exit(struct dpaa2_caam_priv *priv)
{
	debugfs_remove_recursive(priv->dfs_root);
}

Annotation

Implementation Notes