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components/libraries/crypto/backend/cc310/cc310_backend_mutex.h

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+/**
+ * Copyright (c) 2018 - 2020, Nordic Semiconductor ASA
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form, except as embedded into a Nordic
+ *    Semiconductor ASA integrated circuit in a product or a software update for
+ *    such product, must reproduce the above copyright notice, this list of
+ *    conditions and the following disclaimer in the documentation and/or other
+ *    materials provided with the distribution.
+ *
+ * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
+ *    contributors may be used to endorse or promote products derived from this
+ *    software without specific prior written permission.
+ *
+ * 4. This software, with or without modification, must only be used with a
+ *    Nordic Semiconductor ASA integrated circuit.
+ *
+ * 5. Any software provided in binary form under this license must not be reverse
+ *    engineered, decompiled, modified and/or disassembled.
+ *
+ * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+ * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef CC310_BACKEND_MUTEX_H__
+#define CC310_BACKEND_MUTEX_H__
+
+/** @file
+ *
+ * @defgroup nrf_crypto_cc310_backend_mutex nrf_crypto CC310 backend mutex.
+ * @{
+ * @ingroup nrf_crypto_cc310_backend
+ *
+ * @brief Mutex control for the nrf_crypto CC310 backend.
+ */
+
+#include "sdk_config.h"
+#include "nrf_mtx.h"
+
+#if NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310) || NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_BL)
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern nrf_mtx_t g_cc310_mutex;
+
+__STATIC_INLINE void cc310_backend_mutex_init(void);
+__STATIC_INLINE bool cc310_backend_mutex_trylock(void);
+__STATIC_INLINE void cc310_backend_mutex_unlock(void);
+
+#ifndef SUPPRESS_INLINE_IMPLEMENTATION
+/**@internal @brief Function initializing CC310 mutex.
+ *
+ *  This function _must_ be called before other mutex operations.
+ */
+__STATIC_INLINE void cc310_backend_mutex_init(void)
+{
+    nrf_mtx_init(&g_cc310_mutex);
+}
+
+/**@internal @brief Function try to lock a CC310 mutex.
+ *
+ * @return true if lock was acquired, false if not.
+ */
+__STATIC_INLINE bool cc310_backend_mutex_trylock(void)
+{
+    return nrf_mtx_trylock(&g_cc310_mutex);
+}
+
+
+/**@internal @brief Unlock a CC310 mutex.
+ *
+ * This function _must_ only be called when holding the lock. Unlocking a mutex which you do not
+ * hold will give undefined behavior.
+ *
+ */
+__STATIC_INLINE void cc310_backend_mutex_unlock(void)
+{
+    nrf_mtx_unlock(&g_cc310_mutex);
+}
+
+#endif // SUPPRESS_INLINE_IMPLEMENTATION
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310) || NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_BL)
+
+/** @} */
+
+#endif // CC310_BACKEND_MUTEX_H__
+