Test interoperability of icmsg with old implementation.

subsys/ipc/ipc_service/backends/ipc_icmsg.c

@@ -105,14 +105,17 @@ static int backend_init(const struct device *instance)
 DT_INST_FOREACH_STATUS_OKAY(DEFINE_BACKEND_DEVICE)
 
 /* TODO: REMOVE THIS WORKAROUND!!! */
-
+#ifdef NRF_PPR
+#include <string.h>
 static int workaround_ppr_reset(void)
 {
 #define _FIX_RESET_MEM(i) \
 	memset(&backend_data_##i, 0, sizeof(backend_data_##i)); \
 	backend_data_##i.tx_pb = &tx_pb_##i; \
 	backend_data_##i.rx_pb = &rx_pb_##i;
 	DT_INST_FOREACH_STATUS_OKAY(_FIX_RESET_MEM);
+	return 0;
 }
 
 SYS_INIT(workaround_ppr_reset, PRE_KERNEL_1, 0);
+#endif

tests/subsys/ipc/ipc_sessions/CMakeLists.txt

@@ -10,3 +10,7 @@ zephyr_include_directories(./common)
 
 FILE(GLOB app_sources src/*.c)
 target_sources(app PRIVATE ${app_sources})
+
+zephyr_sources_ifdef(CONFIG_IPC_SERVICE_ICMSG_V1		interoperability/icmsg_v1.c)
+zephyr_sources_ifdef(CONFIG_PBUF_V1				interoperability/pbuf_v1.c)
+zephyr_sources_ifdef(CONFIG_IPC_SERVICE_BACKEND_ICMSG_V1	interoperability/ipc_icmsg_v1.c)

tests/subsys/ipc/ipc_sessions/Kconfig

@@ -4,6 +4,8 @@
 # SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
 #
 
+rsource "interoperability/Kconfig"
+
 menu "Zephyr"
 source "Kconfig.zephyr"
 endmenu
@@ -28,3 +30,8 @@ config IPC_TEST_BLOCK_SIZE
 config IPC_TEST_BLOCK_CNT
 	int "Number of blocks for multiple transfers test"
 	default 8000
+
+config IPC_TEST_SKIP_UNBOUND
+	bool "Skip unbound tests"
+	help
+		Whether to skip tests that requires unbound callback functionality.

tests/subsys/ipc/ipc_sessions/interoperability/Kconfig

@@ -0,0 +1,29 @@
+#
+# Copyright (c) 2024 Nordic Semiconductor ASA
+#
+# SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+#
+
+config IPC_SERVICE_BACKEND_ICMSG
+	default n if IPC_SERVICE_BACKEND_ICMSG_V1
+
+config IPC_SERVICE_ICMSG
+	default n if IPC_SERVICE_ICMSG_V1
+
+config IPC_SERVICE_BACKEND_ICMSG_V1
+	bool "ICMSG backend with SPSC packet buffer (old implementation)"
+	depends on MBOX
+	select IPC_SERVICE_ICMSG_V1
+	help
+	  Chosing this backend results in single endpoint implementation based
+	  on circular packet buffer.
+
+menuconfig IPC_SERVICE_ICMSG_V1
+	bool "icmsg IPC library (old implementation)"
+	select PBUF_V1
+	help
+	  Icmsg library
+
+if IPC_SERVICE_ICMSG_V1
+	rsource "Kconfig.icmsg_v1"
+endif

tests/subsys/ipc/ipc_sessions/interoperability/Kconfig.icmsg_v1

@@ -0,0 +1,90 @@
+# Copyright (c) 2022 Nordic Semiconductor (ASA)
+# SPDX-License-Identifier: Apache-2.0
+
+config IPC_SERVICE_ICMSG_SHMEM_ACCESS_SYNC_V1
+	bool "Synchronize access to shared memory"
+	depends on MULTITHREADING
+	default y
+	help
+	  Provide synchronization access to shared memory at a library level.
+	  This option is enabled by default to allow to use sending API from
+	  multiple contexts. Mutex is used to guard access to the memory.
+	  This option can be safely disabled if an application ensures data
+	  are sent from single context.
+
+config IPC_SERVICE_ICMSG_SHMEM_ACCESS_TO_MS_V1
+	int "Mutex lock timeout in milliseconds"
+	depends on IPC_SERVICE_ICMSG_SHMEM_ACCESS_SYNC_V1
+	range 1 5
+	default 1
+	help
+	  Maximum time to wait, in milliseconds, for access to send data with
+	  backends basing on icmsg library. This time should be relatively low.
+
+config IPC_SERVICE_ICMSG_BOND_NOTIFY_REPEAT_TO_MS_V1
+	int "Bond notification timeout in miliseconds"
+	range 1 100
+	default 1
+	help
+	  Time to wait for remote bonding notification before the
+	  notification is repeated.
+
+config IPC_SERVICE_BACKEND_ICMSG_WQ_ENABLE_V1
+	bool "Use dedicated workqueue"
+	depends on MULTITHREADING
+	default y
+	help
+	  Enable dedicated workqueue thread for the ICMsg backend.
+	  Disabling this configuration will cause the ICMsg backend to
+	  process incoming data through the system workqueue context, and
+	  therefore reduces the RAM footprint of the backend.
+	  Disabling this config may result in deadlocks in certain usage
+	  scenarios, such as when synchronous IPC is executed from the system
+	  workqueue context.
+	  The callbacks coming from the backend are executed from the workqueue
+	  context.
+	  When the option is disabled, the user must obey the restrictions
+	  imposed by the system workqueue, such as never performing blocking
+	  operations from within the callback.
+
+if IPC_SERVICE_BACKEND_ICMSG_WQ_ENABLE_V1
+
+config IPC_SERVICE_BACKEND_ICMSG_WQ_STACK_SIZE_V1
+	int "Size of RX work queue stack"
+	default 1280
+	help
+	  Size of stack used by work queue RX thread. This work queue is
+	  created to prevent notifying service users about received data
+	  from the system work queue. The queue is shared among instances.
+
+config IPC_SERVICE_BACKEND_ICMSG_WQ_PRIORITY_V1
+	int "Priority of RX work queue thread"
+	default -1
+	range -256 -1
+	help
+	  Priority of the ICMSG RX work queue thread.
+	  The ICMSG library in its simplicity requires the workqueue to execute
+	  at a cooperative priority.
+
+endif
+
+# The Icmsg library in its simplicity requires the system workqueue to execute
+# at a cooperative priority.
+config SYSTEM_WORKQUEUE_PRIORITY
+	range -256 -1 if !IPC_SERVICE_BACKEND_ICMSG_WQ_ENABLE_V1
+
+config PBUF_V1
+	bool "Packed buffer support library (old implementation)"
+	help
+	  The packet buffer implements lightweight unidirectional packet buffer
+	  with read/write semantics on top of a memory region shared by the
+	  reader and writer. It optionally embeds cache and memory barrier
+	  management to ensure correct data access.
+
+if PBUF_V1
+
+config PBUF_RX_READ_BUF_SIZE_V1
+	int "Size of PBUF read buffer in bytes"
+	default 128
+
+endif # PBUF