b92a5afcc4
Using the AES interrupt allows the user process not to waste time polling for the completion of the operation. This time can be used by the user process to do something else, or to let the system enter PM0. Since the system is now free to perform various operations during a crypto operation, a protection of the crypto resource is added, and PM1+ is prohibited in order not to stall crypto operations. Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com>
89 lines
2.9 KiB
C
89 lines
2.9 KiB
C
/*
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* Copyright (c) 2013, ADVANSEE - http://www.advansee.com/
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* \addtogroup cc2538
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* @{
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*
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* \defgroup cc2538-crypto cc2538 AES/SHA cryptoprocessor
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*
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* Driver for the cc2538 AES/SHA cryptoprocessor
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* @{
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*
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* \file
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* Header file for the cc2538 AES/SHA cryptoprocessor driver
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*/
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#ifndef CRYPTO_H_
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#define CRYPTO_H_
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#include "contiki.h"
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/*---------------------------------------------------------------------------*/
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/** \name Crypto drivers return codes
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* @{
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*/
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#define CRYPTO_SUCCESS 0
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#define CRYPTO_INVALID_PARAM 1
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#define CRYPTO_NULL_ERROR 2
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#define CRYPTO_RESOURCE_IN_USE 3
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#define CRYPTO_DMA_BUS_ERROR 4
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/** @} */
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/*---------------------------------------------------------------------------*/
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/** \name Crypto functions
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* @{
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*/
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/** \brief Enables and resets the AES/SHA cryptoprocessor
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*/
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void crypto_init(void);
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/** \brief Enables the AES/SHA cryptoprocessor
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*/
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void crypto_enable(void);
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/** \brief Disables the AES/SHA cryptoprocessor
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* \note Call this function to save power when the cryptoprocessor is unused.
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*/
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void crypto_disable(void);
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/** \brief Registers a process to be notified of the completion of a crypto
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* operation
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* \param p Process to be polled upon IRQ
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* \note This function is only supposed to be called by the crypto drivers.
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*/
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void crypto_register_process_notification(struct process *p);
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/** @} */
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#endif /* CRYPTO_H_ */
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/**
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* @}
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* @}
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*/
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