AESCMACLPF3.h

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/*
 * Copyright (c) 2021-2023, Texas Instruments Incorporated
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * *  Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * *  Redistributions in binary form 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.
 *
 * *  Neither the name of Texas Instruments Incorporated nor the names of
 *    its contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#ifndef ti_drivers_aescmac_AESCMACLPF3__include
#define ti_drivers_aescmac_AESCMACLPF3__include

#include <stdbool.h>
#include <stdint.h>

#include <ti/drivers/AESCMAC.h>
#include <ti/drivers/cryptoutils/aes/AESCommonLPF3.h>
#include <ti/drivers/cryptoutils/sharedresources/CryptoResourceLPF3.h>

#include <ti/devices/DeviceFamily.h>
#include DeviceFamily_constructPath(inc/hw_types.h)
#include DeviceFamily_constructPath(driverlib/aes.h)

#ifdef __cplusplus
extern "C" {
#endif

/*
 * Default AES CMAC & CBC-MAC auto config:
 *  ECB SRC as TXTXBUF
 *  Trigger point for auto ECB as WRBUF3 (encryption starts by writing BUF3)
 */
#define AESCMACLPF3_DEFAULT_AUTOCFG \
    ((uint32_t)AES_AUTOCFG_ECBSRC_TXTXBUF | (uint32_t)AES_AUTOCFG_TRGECB_WRBUF3 | (uint32_t)AES_AUTOCFG_BUSHALT_EN)

/*
 * AES CMAC DMA config:
 *  - ADRCHA = BUF0
 *  - TRGCHA = ECBSTART
 */
#define AESCMACLPF3_DMA_CONFIG ((uint32_t)AES_DMA_ADRCHA_BUF0 | (uint32_t)AES_DMA_TRGCHA_ECBSTART)

#define AESCBCMACLPF3_DMA_CONFIG AESCMACLPF3_DMA_CONFIG

typedef AESCommonLPF3_HWAttrs AESCMACLPF3_HWAttrs;

typedef struct
{
    /* Common member first to allow struct to be cast to the common type */
    AESCommonLPF3_Object common;
    volatile uint32_t intermediateTag[AES_TAG_LENGTH_BYTES / 4U];
    uint32_t finalInputBlock[AES_BLOCK_SIZE_WORDS];
    AESCMAC_CallbackFxn callbackFxn;
    AESCMAC_Operation *operation;
    AESCMAC_OperationType operationType;
    AESCMAC_OperationalMode operationalMode;
    bool threadSafe;
} AESCMACLPF3_Object;

void AESCMACLPF3_processBlocks(const uint8_t *input, size_t transactionLength);

void AESCMACLPF3_readTag(uint32_t tagOut[AES_TAG_LENGTH_BYTES / 4U]);

__STATIC_INLINE bool AESCMAC_acquireLock(AESCMAC_Handle handle, uint32_t timeout)
{
    return CryptoResourceLPF3_acquireLock(timeout);
}
__STATIC_INLINE void AESCMAC_releaseLock(AESCMAC_Handle handle)
{
    CryptoResourceLPF3_releaseLock();
}
__STATIC_INLINE void AESCMAC_enableThreadSafety(AESCMAC_Handle handle)
{
    AESCMACLPF3_Object *object = handle->object;
    object->threadSafe         = true;
}
__STATIC_INLINE void AESCMAC_disableThreadSafety(AESCMAC_Handle handle)
{
    AESCMACLPF3_Object *object = handle->object;
    object->threadSafe         = false;
}
#ifdef __cplusplus
}
#endif

#endif /* ti_drivers_aescmac_AESCMACLPF3__include */