Add support of printing the dpseci frame queue statistics using debugfs.
Signed-off-by: Vakul Garg <vakul.garg@xxxxxxx>
---
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
