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From: Vakul Garg <vakul.garg@nxp.com>
To: "linux-crypto@vger.kernel.org" <linux-crypto@vger.kernel.org>
Cc: Horia Geanta <horia.geanta@nxp.com>,
	Aymen Sghaier <aymen.sghaier@nxp.com>,
	"herbert@gondor.apana.org.au" <herbert@gondor.apana.org.au>,
	Vakul Garg <vakul.garg@nxp.com>
Subject: [PATCH v2] crypto: caam/qi2 - Add printing dpseci fq stats using debugfs
Date: Fri, 19 Jul 2019 11:23:01 +0000	[thread overview]
Message-ID: <20190719111821.21696-1-vakul.garg@nxp.com> (raw)

Add support of printing the dpseci frame queue statistics using debugfs.

Signed-off-by: Vakul Garg <vakul.garg@nxp.com>
---
 drivers/crypto/caam/Kconfig          | 11 +++++
 drivers/crypto/caam/Makefile         |  1 +
 drivers/crypto/caam/caamalg_qi2.c    |  5 +++
 drivers/crypto/caam/caamalg_qi2.h    |  2 +
 drivers/crypto/caam/dpseci-debugfs.c | 80 ++++++++++++++++++++++++++++++++++++
 drivers/crypto/caam/dpseci-debugfs.h | 19 +++++++++
 6 files changed, 118 insertions(+)
 create mode 100644 drivers/crypto/caam/dpseci-debugfs.c
 create mode 100644 drivers/crypto/caam/dpseci-debugfs.h

diff --git a/drivers/crypto/caam/Kconfig b/drivers/crypto/caam/Kconfig
index 3720ddabb507..383e167e7272 100644
--- a/drivers/crypto/caam/Kconfig
+++ b/drivers/crypto/caam/Kconfig
@@ -168,3 +168,14 @@ config CRYPTO_DEV_FSL_DPAA2_CAAM
 
 	  To compile this as a module, choose M here: the module
 	  will be called dpaa2_caam.
+
+if CRYPTO_DEV_FSL_DPAA2_CAAM
+
+config CRYPTO_DEV_FSL_DPAA2_CAAM_DEBUGFS
+	depends on DEBUG_FS
+	bool "Enable debugfs support"
+	help
+	  Selecting this will enable printing of various debug information
+          in the DPAA2 CAAM driver.
+
+endif
diff --git a/drivers/crypto/caam/Makefile b/drivers/crypto/caam/Makefile
index 9ab4e81ea21e..e4e9fa481a44 100644
--- a/drivers/crypto/caam/Makefile
+++ b/drivers/crypto/caam/Makefile
@@ -30,3 +30,4 @@ endif
 obj-$(CONFIG_CRYPTO_DEV_FSL_DPAA2_CAAM) += dpaa2_caam.o
 
 dpaa2_caam-y    := caamalg_qi2.o dpseci.o
+dpaa2_caam-$(CONFIG_CRYPTO_DEV_FSL_DPAA2_CAAM_DEBUGFS) += dpseci-debugfs.o
diff --git a/drivers/crypto/caam/caamalg_qi2.c b/drivers/crypto/caam/caamalg_qi2.c
index 06bf32c32cbd..a78a36dfa7b9 100644
--- a/drivers/crypto/caam/caamalg_qi2.c
+++ b/drivers/crypto/caam/caamalg_qi2.c
@@ -15,6 +15,7 @@
 #include "key_gen.h"
 #include "caamalg_desc.h"
 #include "caamhash_desc.h"
+#include "dpseci-debugfs.h"
 #include <linux/fsl/mc.h>
 #include <soc/fsl/dpaa2-io.h>
 #include <soc/fsl/dpaa2-fd.h>
@@ -5098,6 +5099,8 @@ static int dpaa2_caam_probe(struct fsl_mc_device *dpseci_dev)
 		goto err_bind;
 	}
 
+	dpaa2_dpseci_debugfs_init(priv);
+
 	/* register crypto algorithms the device supports */
 	for (i = 0; i < ARRAY_SIZE(driver_algs); i++) {
 		struct caam_skcipher_alg *t_alg = driver_algs + i;
@@ -5265,6 +5268,8 @@ static int __cold dpaa2_caam_remove(struct fsl_mc_device *ls_dev)
 	dev = &ls_dev->dev;
 	priv = dev_get_drvdata(dev);
 
+	dpaa2_dpseci_debugfs_exit(priv);
+
 	for (i = 0; i < ARRAY_SIZE(driver_aeads); i++) {
 		struct caam_aead_alg *t_alg = driver_aeads + i;
 
diff --git a/drivers/crypto/caam/caamalg_qi2.h b/drivers/crypto/caam/caamalg_qi2.h
index 973f6296bc6f..b450e2a25c1f 100644
--- a/drivers/crypto/caam/caamalg_qi2.h
+++ b/drivers/crypto/caam/caamalg_qi2.h
@@ -10,6 +10,7 @@
 #include <soc/fsl/dpaa2-io.h>
 #include <soc/fsl/dpaa2-fd.h>
 #include <linux/threads.h>
+#include <linux/netdevice.h>
 #include "dpseci.h"
 #include "desc_constr.h"
 
@@ -64,6 +65,7 @@ struct dpaa2_caam_priv {
 	struct iommu_domain *domain;
 
 	struct dpaa2_caam_priv_per_cpu __percpu *ppriv;
+	struct dentry *dfs_root;
 };
 
 /**
diff --git a/drivers/crypto/caam/dpseci-debugfs.c b/drivers/crypto/caam/dpseci-debugfs.c
new file mode 100644
index 000000000000..a6b67e4499aa
--- /dev/null
+++ b/drivers/crypto/caam/dpseci-debugfs.c
@@ -0,0 +1,80 @@
+// 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 = (struct dpaa2_caam_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;
+}
+
+static int dpseci_dbg_fqs_open(struct inode *inode, struct file *file)
+{
+	int err;
+	struct dpaa2_caam_priv *priv;
+
+	priv = (struct dpaa2_caam_priv *)inode->i_private;
+
+	err = single_open(file, dpseci_dbg_fqs_show, priv);
+	if (err < 0)
+		dev_err(priv->dev, "single_open() failed\n");
+
+	return err;
+}
+
+static const struct file_operations dpseci_dbg_fq_ops = {
+	.open = dpseci_dbg_fqs_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+};
+
+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_fq_ops);
+}
+
+void dpaa2_dpseci_debugfs_exit(struct dpaa2_caam_priv *priv)
+{
+	debugfs_remove_recursive(priv->dfs_root);
+}
diff --git a/drivers/crypto/caam/dpseci-debugfs.h b/drivers/crypto/caam/dpseci-debugfs.h
new file mode 100644
index 000000000000..9f90819a7adf
--- /dev/null
+++ b/drivers/crypto/caam/dpseci-debugfs.h
@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */
+/* Copyright 2019 NXP
+ */
+
+#ifndef DPSECI_DEBUGFS_H
+#define DPSECI_DEBUGFS_H
+
+#include <linux/dcache.h>
+#include "caamalg_qi2.h"
+
+#ifdef CONFIG_CRYPTO_DEV_FSL_DPAA2_CAAM_DEBUGFS
+void dpaa2_dpseci_debugfs_init(struct dpaa2_caam_priv *priv);
+void dpaa2_dpseci_debugfs_exit(struct dpaa2_caam_priv *priv);
+#else
+static inline void dpaa2_dpseci_debugfs_init(struct dpaa2_caam_priv *priv) {}
+static inline void dpaa2_dpseci_debugfs_exit(struct dpaa2_caam_priv *priv) {}
+#endif /* CONFIG_CRYPTO_DEV_FSL_DPAA2_CAAM_DEBUGFS */
+
+#endif /* DPSECI_DEBUGFS_H */
-- 
2.13.6


             reply	other threads:[~2019-07-19 11:23 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-19 11:23 Vakul Garg [this message]
2019-07-22 14:25 ` [PATCH v2] crypto: caam/qi2 - Add printing dpseci fq stats using debugfs Horia Geanta
2019-07-22 14:29   ` Vakul Garg
2019-07-22 15:20     ` Horia Geanta
2019-07-23  1:20   ` Vakul Garg
2019-07-23  6:14     ` Horia Geanta

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