cryptodrv.h

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/*
 * \file cryptodrv.h
 *
 * \brief CRYPTO driver definitions including CRYPTO preemption and
 *  yield when crypto busy management.
 *
 *  Copyright (C) 2016 Silicon Labs, http://www.silabs.com
 *  SPDX-License-Identifier: Apache-2.0
 *
 *  Licensed 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.
 */
#ifndef MBEDTLS_CRYPTODRV_H
#define MBEDTLS_CRYPTODRV_H

#if !defined(MBEDTLS_CONFIG_FILE)
#include "config.h"
#else
#include MBEDTLS_CONFIG_FILE
#endif

#include "em_device.h"

#if ( defined(CRYPTO_COUNT) && (CRYPTO_COUNT > 0) )

#include "slcl_device.h"
#include "mbedtls_ecode.h"
#include "em_crypto.h"
#include "em_core.h"
#if defined( MBEDTLS_DEVICE_YIELD_WHEN_BUSY )
#include "slpal.h"
#endif
#if defined( MBEDTLS_INCLUDE_IO_MODE_DMA )
#include "dmadrv.h"
#endif
#include <stdint.h>
#include <stdbool.h>

#ifdef __cplusplus
extern "C" {
#endif

/*******************************************************************************
 ******************************* ERROR CODES  **********************************
 ******************************************************************************/

#define MBEDTLS_ECODE_CRYPTODRV_OPERATION_ABORTED ((int)MBEDTLS_ECODE_CRYPTODRV_BASE | 0x1) 
#define MBEDTLS_ECODE_CRYPTODRV_BUSY              ((int)MBEDTLS_ECODE_CRYPTODRV_BASE | 0x2) 
/*******************************************************************************
 *******************************   TYPEDEFS   **********************************
 ******************************************************************************/

#if defined(MBEDTLS_CRYPTO_DEVICE_PREEMPTION)

typedef struct
{
  uint32_t CTRL;          
  uint32_t WAC;           
  uint32_t SEQCTRL;       
  uint32_t SEQCTRLB;      
  uint32_t IEN;           
  uint32_t SEQ[5];        
  CRYPTO_Data260_TypeDef DDATA[5]; 
} CRYPTO_Context_t;
  
#endif /* #if defined(MBEDTLS_CRYPTO_DEVICE_PREEMPTION) */

typedef struct
{
  CRYPTO_TypeDef           *crypto;          
  IRQn_Type                 irqn;            
  uint32_t                  clk;             
  mbedtls_device_context  **ppMbedtlsDevice; 
#if defined(MBEDTLS_INCLUDE_IO_MODE_DMA)
  DMADRV_PeripheralSignal_t dmaReqSigChIn;   
  DMADRV_PeripheralSignal_t dmaReqSigChOut;  
#endif
} CRYPTO_Device_t;

typedef struct
{
  const CRYPTO_Device_t *device;          
#if defined( MBEDTLS_CRYPTO_DEVICE_PREEMPTION )
  
  CRYPTO_Context_t   cryptoContext;       
  bool               aborted;             
  int                lockWaitTicks;       
  unsigned long      priority;            
  /* Double linked-list for CRYPTO context preemption. */
  void*              pContextPreempted;   
  void*              pContextPreemptor;   
#if defined( MBEDTLS_ALLOW_ISR_CALLS_IRQ_MASK )
  CORE_nvicMask_t    nvicState;           
#endif
#if defined( MBEDTLS_DEVICE_YIELD_WHEN_NOT_OWNER )
  bool               waitOwnership;       
  SLPAL_Completion_t ownership;           
#endif
#endif /* #if defined(MBEDTLS_CRYPTO_DEVICE_PREEMPTION) */
  
} CRYPTODRV_Context_t;

#ifdef __cplusplus
}
#endif

#endif /* #if ( defined(CRYPTO_COUNT) && (CRYPTO_COUNT > 0) ) || \
          ( defined(AES_COUNT) && (AES_COUNT > 0) ) */

#endif /* #ifndef MBEDTLS_CRYPTODRV_H */