hal: renesas: rz: Initial support for IPM

drivers/rz/CMakeLists.txt

@@ -25,3 +25,6 @@ zephyr_library_sources_ifdef(CONFIG_USE_RZ_FSP_SCIF_UART
 
 zephyr_library_sources_ifdef(CONFIG_USE_RZ_FSP_ADC
 	fsp/src/${SOC_SERIES_PREFIX}/r_adc_c/r_adc_c.c)
+
+zephyr_library_sources_ifdef(CONFIG_USE_RZ_FSP_MHU
+	fsp/src/${SOC_SERIES_PREFIX}/r_mhu_ns/r_mhu_ns.c)

drivers/rz/fsp/inc/api/r_mhu_api.h

@@ -0,0 +1,147 @@
+/*
+* Copyright (c) 2020 - 2024 Renesas Electronics Corporation and/or its affiliates
+*
+* SPDX-License-Identifier: BSD-3-Clause
+*/
+
+/*******************************************************************************************************************//**
+ * @ingroup RENESAS_INTERFACES
+ * @defgroup MHU_API MHU Interface (for secure and non secure channels)
+ * @brief Interface for Message Handling Unit
+ *
+ * @section MHU_API_SUMMARY Summary
+ * The Message Handling Unit interface provides a common API for MHU HAL drivers.
+ * The Message Handling Unit interface supports:
+ *        - Message communication between Cortex-A55 and Cortex-M33.
+ *        - 32-bit data can be communicated between CPUs via shared memory.
+ *
+ * Implemented by:
+ * - @ref MHU_S
+ * - @ref MHU_NS
+ *
+ * @{
+ **********************************************************************************************************************/
+
+/***********************************************************************************************************************
+ * Includes
+ **********************************************************************************************************************/
+
+/* Register definitions, common services and error codes. */
+#include "bsp_api.h"
+
+#ifndef R_MHU_API_H
+ #define R_MHU_API_H
+
+/* Common macro for FSP header files. There is also a corresponding FSP_FOOTER macro at the end of this file. */
+FSP_HEADER
+
+/**********************************************************************************************************************
+ * Macro definitions
+ **********************************************************************************************************************/
+
+/**********************************************************************************************************************
+ * Typedef definitions
+ **********************************************************************************************************************/
+
+typedef enum e_mhu_send_type
+{
+    MHU_SEND_TYPE_MSG = 0,             ///< Channel for sending "message" and receiving "response".
+    MHU_SEND_TYPE_RSP,                 ///< Channel for sending "response" and receiving "message".
+} mhu_send_type_t;
+
+/** MHU callback parameter definition */
+typedef struct st_mhu_callback_args
+{
+    /** Placeholder for user data.  Set in @ref mhu_api_t::open function in @ref mhu_cfg_t. */
+    void const * p_context;
+    uint32_t     channel;              ///< Channel where the receive interrupt occurred.
+    uint32_t     msg;                  ///< 32-bit received data.
+} mhu_callback_args_t;
+
+/** MHU configuration block */
+typedef struct st_mhu_cfg
+{
+    /** Generic configuration */
+    uint32_t  channel;                                 ///< Identifier recognizable by implementation
+    uint8_t   rx_ipl;                                  ///< Receive interrupt priority
+    IRQn_Type rx_irq;                                  ///< Receive interrupt ID
+
+    /** Parameters to control software behavior */
+    void (* p_callback)(mhu_callback_args_t * p_args); ///< Pointer to callback function
+
+    void const * p_shared_memory;                      ///< Pointer to 64-bit send/receive data buffer.
+
+    /** Placeholder for user data.  Passed to the user callback in @ref mhu_callback_args_t. */
+    void const * p_context;
+} mhu_cfg_t;
+
+/** MHU control block.  Allocate an instance specific control block to pass into the MHU API calls.
+ * @par Implemented as
+ * - mhu_instance_ctrl_t
+ */
+typedef void mhu_ctrl_t;
+
+/** Interface definition for MHU */
+typedef struct st_mhu_api
+{
+    /** Opens the MHU driver and initializes the hardware.
+     * @par Implemented as
+     * - @ref R_MHU_S_Open()
+     * - @ref R_MHU_NS_Open()
+     *
+     * @param[in] p_ctrl    Pointer to control block. Must be declared by user. Elements are set here.
+     * @param[in] p_cfg     Pointer to configuration structure.
+     */
+    fsp_err_t (* open)(mhu_ctrl_t * const p_ctrl, mhu_cfg_t const * const p_cfg);
+
+    /** Performs a send operation on an MHU device.
+     * @par Implemented as
+     * - @ref R_MHU_S_MsgSend()
+     * - @ref R_MHU_NS_MsgSend()
+     *
+     * @param[in] p_ctrl    Pointer to control block set in mhu_api_t::open call.
+     * @param[in] msg       32bit send data.
+     */
+    fsp_err_t (* msgSend)(mhu_ctrl_t * const p_ctrl, uint32_t const msg);
+
+    /**
+     * Specify callback function and optional context pointer and working memory pointer.
+     * @par Implemented as
+     * - @ref R_MHU_S_CallbackSet()
+     * - @ref R_MHU_NS_CallbackSet()
+     *
+     * @param[in]   p_ctrl                   Control block set in @ref mhu_api_t::open call for this channel.
+     * @param[in]   p_callback               Callback function to register
+     * @param[in]   p_context                Pointer to send to callback function
+     * @param[in]   p_callback_memory        Pointer to volatile memory where callback structure can be allocated.
+     *                                       Callback arguments allocated here are only valid during the callback.
+     */
+    fsp_err_t (* callbackSet)(mhu_ctrl_t * const p_api_ctrl, void (* p_callback) (mhu_callback_args_t *),
+                              void const * const p_context, mhu_callback_args_t * const p_callback_memory);
+
+    /** Closes the driver and releases the MHU device.
+     * @par Implemented as
+     * - @ref R_MHU_S_Close()
+     * - @ref R_MHU_NS_Close()
+     *
+     * @param[in] p_ctrl    Pointer to control block set in mhu_api_t::open call.
+     */
+    fsp_err_t (* close)(mhu_ctrl_t * const p_ctrl);
+} mhu_api_t;
+
+/** This structure encompasses everything that is needed to use an instance of this interface. */
+typedef struct st_mhu_instance
+{
+    mhu_ctrl_t      * p_ctrl;          ///< Pointer to the control structure for this instance
+    mhu_cfg_t const * p_cfg;           ///< Pointer to the configuration structure for this instance
+    mhu_api_t const * p_api;           ///< Pointer to the API structure for this instance
+} mhu_instance_t;
+
+/******************************************************************************************************************//**
+ * @} (end addtogroup MHU_API)
+ *********************************************************************************************************************/
+
+/* Common macro for FSP header files. There is also a corresponding FSP_HEADER macro at the top of this file. */
+FSP_FOOTER
+
+#endif                                 /* R_MHU_API_H */

drivers/rz/fsp/inc/instances/rzg/r_mhu_ns.h

@@ -0,0 +1,91 @@
+/*
+* Copyright (c) 2020 - 2024 Renesas Electronics Corporation and/or its affiliates
+*
+* SPDX-License-Identifier: BSD-3-Clause
+*/
+
+/*******************************************************************************************************************//**
+ * @addtogroup MHU_NS
+ * @{
+ **********************************************************************************************************************/
+
+/***********************************************************************************************************************
+ * Includes
+ **********************************************************************************************************************/
+#include "r_mhu_api.h"
+#include "r_mhu_ns_cfg.h"
+
+#ifndef R_MHU_NS_H
+ #define R_MHU_NS_H
+
+/* Common macro for FSP header files. There is also a corresponding FSP_FOOTER macro at the end of this file. */
+FSP_HEADER
+
+/***********************************************************************************************************************
+ * Macro definitions
+ **********************************************************************************************************************/
+
+/*************************************************************************************************
+ * Type defines
+ *************************************************************************************************/
+
+/** Channel control block. DO NOT INITIALIZE.  Initialization occurs when @ref mhu_api_t::open is called. */
+typedef struct st_mhu_ns_instance_ctrl
+{
+    uint32_t          open;             ///< Indicates whether the open() API has been successfully called.
+    mhu_cfg_t const * p_cfg;            ///< Pointer to instance configuration
+    R_MHU0_Type     * p_regs;           ///< Base register for this channel
+
+    uint32_t        channel;            ///< channel
+    mhu_send_type_t send_type;          ///< Send Type: Message or Response
+    uint32_t      * p_shared_memory_tx; ///< Pointer to send data area
+    uint32_t      * p_shared_memory_rx; ///< Pointer to recv data area
+
+ #if BSP_TZ_SECURE_BUILD
+    bool callback_is_secure;            ///< p_callback is in secure memory
+ #endif
+
+    /* Pointer to callback and optional working memory */
+    void (* p_callback)(mhu_callback_args_t *);
+
+    /* Pointer to non-secure memory that can be used to pass arguments to a callback in non-secure memory. */
+    mhu_callback_args_t * p_callback_memory;
+
+    /* Pointer to context to be passed into callback function */
+    void const * p_context;
+} mhu_ns_instance_ctrl_t;
+
+/**********************************************************************************************************************
+ * Exported global variables
+ **********************************************************************************************************************/
+
+/** @cond INC_HEADER_DEFS_SEC */
+/** Filled in Interface API structure for this Instance. */
+extern const mhu_api_t g_mhu_ns_on_mhu_ns;
+
+/** @endcond */
+
+/***********************************************************************************************************************
+ * Public APIs
+ **********************************************************************************************************************/
+fsp_err_t R_MHU_NS_Open(mhu_ctrl_t * p_ctrl, mhu_cfg_t const * const p_cfg);
+
+fsp_err_t R_MHU_NS_MsgSend(mhu_ctrl_t * const p_ctrl, uint32_t const msg);
+
+fsp_err_t R_MHU_NS_Close(mhu_ctrl_t * const p_ctrl);
+
+fsp_err_t R_MHU_NS_CallbackSet(mhu_ctrl_t * const          p_api_ctrl,
+                               void (                    * p_callback ) (mhu_callback_args_t *),
+                               void const * const          p_context,
+                               mhu_callback_args_t * const p_callback_memory);
+
+void R_MHU_NS_IsrSub(uint32_t irq);
+
+/** Common macro for FSP header files. There is also a corresponding FSP_HEADER macro at the top of this file. */
+FSP_FOOTER
+
+#endif                                 /* R_MHU_NS_H */
+
+/*******************************************************************************************************************//**
+ * @} (end defgroup MHU_NS)
+ **********************************************************************************************************************/