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new 494554618 benchmark/mtd: Add MTD testing/benchmark application
494554618 is described below
commit 494554618e89f3a4763c1e3250562454dab1ab4c
Author: Tiago Medicci <[email protected]>
AuthorDate: Wed Mar 19 14:23:27 2025 -0300
benchmark/mtd: Add MTD testing/benchmark application
This test allows measuring write and read operations on an MTD
flash device, evaluating its transfer rates.
Signed-off-by: Tiago Medicci <[email protected]>
---
benchmarks/mtd/CMakeLists.txt | 33 +++++++
benchmarks/mtd/Kconfig | 18 ++++
benchmarks/mtd/Make.defs | 25 +++++
benchmarks/mtd/Makefile | 34 +++++++
benchmarks/mtd/mtd.c | 207 ++++++++++++++++++++++++++++++++++++++++++
5 files changed, 317 insertions(+)
diff --git a/benchmarks/mtd/CMakeLists.txt b/benchmarks/mtd/CMakeLists.txt
new file mode 100644
index 000000000..975ed1001
--- /dev/null
+++ b/benchmarks/mtd/CMakeLists.txt
@@ -0,0 +1,33 @@
+#
##############################################################################
+# apps/benchmarks/mtd/CMakeLists.txt
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
contributor
+# license agreements. See the NOTICE file distributed with this work for
+# additional information regarding copyright ownership. The ASF licenses this
+# file to you under the Apache License, Version 2.0 (the "License"); you may
not
+# use this file except in compliance with the License. You may obtain a copy
of
+# the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations under
+# the License.
+#
+#
##############################################################################
+
+if(CONFIG_BENCHMARK_MTD)
+ nuttx_add_application(
+ NAME
+ mtd
+ STACKSIZE
+ ${CONFIG_DEFAULT_TASK_STACKSIZE}
+ MODULE
+ ${CONFIG_BENCHMARK_MTD}
+ SRCS
+ mtd.c)
+endif()
diff --git a/benchmarks/mtd/Kconfig b/benchmarks/mtd/Kconfig
new file mode 100644
index 000000000..f5ceadfe0
--- /dev/null
+++ b/benchmarks/mtd/Kconfig
@@ -0,0 +1,18 @@
+#
+# For a description of the syntax of this configuration file,
+# see the file kconfig-language.txt in the NuttX tools repository.
+#
+
+config BENCHMARK_MTD
+ tristate "MTD test and transfer rate benchmark"
+ default n
+ depends on BUILD_FLAT && MTD
+ ---help---
+ This testing/benchmark application performs an erase/write
+ operation to evaluate write transfer rate and then reads the
+ written content back to evaluate the read transfer rate.
Finally,
+ it compares the read data with the previously written data to
+ ensure the MTD device is working as expected.
+
+ NOTE: This application uses internal OS interfaces and so it
is not
+ available in the NuttX kernel build.
diff --git a/benchmarks/mtd/Make.defs b/benchmarks/mtd/Make.defs
new file mode 100644
index 000000000..9bf77e7b9
--- /dev/null
+++ b/benchmarks/mtd/Make.defs
@@ -0,0 +1,25 @@
+############################################################################
+# apps/benchmarks/mtd/Make.defs
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership. The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+ifneq ($(CONFIG_BENCHMARK_MTD),)
+CONFIGURED_APPS += $(APPDIR)/benchmarks/mtd/
+endif
diff --git a/benchmarks/mtd/Makefile b/benchmarks/mtd/Makefile
new file mode 100644
index 000000000..30029efe3
--- /dev/null
+++ b/benchmarks/mtd/Makefile
@@ -0,0 +1,34 @@
+############################################################################
+# apps/benchmarks/mtd/Makefile
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership. The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+include $(APPDIR)/Make.defs
+
+# MTD test and transfer rate benchmark
+
+PROGNAME = mtd
+PRIORITY = SCHED_PRIORITY_DEFAULT
+STACKSIZE = $(CONFIG_DEFAULT_TASK_STACKSIZE)
+MODULE = $(CONFIG_BENCHMARK_MTD)
+
+MAINSRC = mtd.c
+
+include $(APPDIR)/Application.mk
diff --git a/benchmarks/mtd/mtd.c b/benchmarks/mtd/mtd.c
new file mode 100644
index 000000000..4d117c606
--- /dev/null
+++ b/benchmarks/mtd/mtd.c
@@ -0,0 +1,207 @@
+/****************************************************************************
+ * apps/benchmarks/mtd/mtd.c
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership. The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <sys/stat.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+#include <nuttx/mtd/mtd.h>
+#include <nuttx/fs/smart.h>
+#include <nuttx/fs/ioctl.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+int main(int argc, FAR char *argv[])
+{
+ struct inode *inode;
+ struct timespec start;
+ struct timespec end;
+ struct mtd_geometry_s geo;
+ struct partition_info_s info;
+ int ret;
+ int x;
+ double elapsed_time;
+ double transfer_rate;
+ size_t total_bytes_written = 0;
+ size_t total_bytes_read = 0;
+ char *buffer;
+
+ /* Argument given? */
+
+ if (argc < 2)
+ {
+ fprintf(stderr, "usage: mtd flash_block_device\n");
+ return -1;
+ }
+
+ /* Find the inode of the block driver identified by 'source' */
+
+ ret = open_blockdriver(argv[1], 0, &inode);
+ if (ret < 0)
+ {
+ fprintf(stderr, "Failed to open %s\n", argv[1]);
+ return ret;
+ }
+
+ /* Get the low-level format from the device. */
+
+ ret = inode->u.i_bops->ioctl(inode, BIOC_PARTINFO, (unsigned long) &info);
+ if (ret != OK)
+ {
+ fprintf(stderr, "Device is not a block device\n");
+ goto errout_with_driver;
+ }
+
+ /* Get the MTD geometry */
+
+ ret = inode->u.i_bops->ioctl(inode, MTDIOC_GEOMETRY, (unsigned long) &geo);
+ if (ret != OK)
+ {
+ fprintf(stderr, "Device is not a MTD device\n");
+ goto errout_with_driver;
+ }
+
+ /* Report the device structure */
+
+ printf("FLASH device parameters:\n");
+ printf(" Sector size: %10d\n", info.sectorsize);
+ printf(" Sector count: %10d\n", info.numsectors);
+ printf(" Erase block: %10d\n", geo.erasesize);
+ printf(" Total size: %10d\n", info.sectorsize * info.numsectors);
+
+ if (info.sectorsize != geo.erasesize)
+ {
+ fprintf(stderr, "Sector size does not match the erase block size.\n"
+ "Please adjust the sector size to enable erasing and writing "
+ "without using an intermediary read buffer.\n");
+ goto errout_with_driver;
+ }
+
+ /* Allocate buffers to use */
+
+ buffer = (char *)malloc(info.sectorsize);
+ if (buffer == NULL)
+ {
+ fprintf(stderr, "Error allocating buffer\n");
+ goto errout_with_driver;
+ }
+
+ /* Fill the buffer with known data and print it in hex format */
+
+ for (int i = 0; i < info.sectorsize; i++)
+ {
+ buffer[i] = (char)(i & 0xff);
+ }
+
+ /* Now write some data to the sector */
+
+ printf("\nStarting write operation...\n");
+
+ clock_gettime(CLOCK_MONOTONIC, &start);
+ for (x = 0; x < info.numsectors; x++)
+ {
+ inode->u.i_bops->write(inode, (const unsigned char *)buffer, x, 1);
+
+ total_bytes_written += info.sectorsize;
+ }
+
+ clock_gettime(CLOCK_MONOTONIC, &end);
+
+ elapsed_time = (end.tv_sec - start.tv_sec) + \
+ (end.tv_nsec - start.tv_nsec) / 1e9;
+ transfer_rate = (total_bytes_written / elapsed_time) / 1024;
+
+ printf("\nWrite operation completed in %.2f seconds\n", elapsed_time);
+ printf("Total bytes written: %zu\n", total_bytes_written);
+ printf("Transfer rate [write]: %.2f KiB/s\n", transfer_rate);
+
+ /* Now read the data back to validate everything was written and can
+ * be read.
+ */
+
+ printf("\nStarting read operation...\n");
+
+ clock_gettime(CLOCK_MONOTONIC, &start);
+
+ for (x = 0; x < info.numsectors; x++)
+ {
+ inode->u.i_bops->read(inode, (unsigned char *)buffer, x, 1);
+
+ total_bytes_read += info.sectorsize;
+ }
+
+ clock_gettime(CLOCK_MONOTONIC, &end);
+
+ elapsed_time = (end.tv_sec - start.tv_sec) + \
+ (end.tv_nsec - start.tv_nsec) / 1e9;
+ transfer_rate = (total_bytes_written / elapsed_time) / 1024;
+
+ printf("\nRead operation completed in %.2f seconds\n", elapsed_time);
+ printf("Total bytes read: %zu\n", total_bytes_read);
+ printf("Transfer rate [read]: %.2f KiB/s\n", transfer_rate);
+
+ /* Compare the read data with the written data */
+
+ for (int i = 0; i < info.sectorsize; i++)
+ {
+ if (buffer[i] != (char)(i & 0xff))
+ {
+ printf("\nData mismatch at byte %d: expected %02X, got %02X\n",
+ i, (unsigned char)(i & 0xff), (unsigned char)buffer[i]);
+ goto errout_with_buffers;
+ }
+ }
+
+ printf("\nData verification successful: read data matches written data\n");
+
+errout_with_buffers:
+
+ /* Free the allocated buffers */
+
+ free(buffer);
+
+errout_with_driver:
+
+ /* Now close the block device and exit */
+
+ close_blockdriver(inode);
+ return 0;
+}
