118 lines
2.7 KiB
C
118 lines
2.7 KiB
C
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/*
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* Copyright (c) 2006-2019, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2019-04-25 tyx the first version
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*/
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#include <rtthread.h>
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#include <rtdevice.h>
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#include <hw_crc.h>
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/**
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* @brief Creating CRC Context
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*
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* @param device Hardware crypto device
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* @param mode Setting default mode or custom mode
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*
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* @return CRC context
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*/
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struct rt_hwcrypto_ctx *rt_hwcrypto_crc_create(struct rt_hwcrypto_device *device,
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hwcrypto_crc_mode mode)
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{
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struct hwcrypto_crc *crc_ctx;
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crc_ctx = (struct hwcrypto_crc *)rt_hwcrypto_ctx_create(device, HWCRYPTO_TYPE_CRC, sizeof(struct hwcrypto_crc));
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if (crc_ctx == RT_NULL)
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{
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return RT_NULL;
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}
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switch (mode)
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{
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case HWCRYPTO_CRC_CRC8:
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{
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struct hwcrypto_crc_cfg temp = HWCRYPTO_CRC8_CFG;
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crc_ctx->crc_cfg = temp;
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break;
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}
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case HWCRYPTO_CRC_CRC16:
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{
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struct hwcrypto_crc_cfg temp = HWCRYPTO_CRC16_CFG;
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crc_ctx->crc_cfg = temp;
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break;
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}
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case HWCRYPTO_CRC_CRC32:
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{
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struct hwcrypto_crc_cfg temp = HWCRYPTO_CRC32_CFG;
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crc_ctx->crc_cfg = temp;
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break;
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}
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case HWCRYPTO_CRC_CCITT:
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{
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struct hwcrypto_crc_cfg temp = HWCRYPTO_CRC_CCITT_CFG;
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crc_ctx->crc_cfg = temp;
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break;
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}
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case HWCRYPTO_CRC_DNP:
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{
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struct hwcrypto_crc_cfg temp = HWCRYPTO_CRC_DNP_CFG;
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crc_ctx->crc_cfg = temp;
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break;
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}
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default:
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break;
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}
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return &crc_ctx->parent;
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}
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/**
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* @brief Destroy CRC Context
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*
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* @param ctx CRC context
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*/
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void rt_hwcrypto_crc_destroy(struct rt_hwcrypto_ctx *ctx)
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{
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rt_hwcrypto_ctx_destroy(ctx);
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}
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/**
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* @brief Processing a packet of data
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*
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* @param ctx CRC context
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* @param input Data buffer to be Processed
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* @param length Data Buffer length
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*
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* @return RT_EOK on success.
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*/
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rt_uint32_t rt_hwcrypto_crc_update(struct rt_hwcrypto_ctx *ctx,
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const rt_uint8_t *input,
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rt_size_t length)
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{
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struct hwcrypto_crc *crc_ctx = (struct hwcrypto_crc *)ctx;
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if (ctx && crc_ctx->ops->update)
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{
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return crc_ctx->ops->update(crc_ctx, input, length);
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}
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return 0;
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}
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/**
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* @brief CRC context configuration
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*
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* @param ctx CRC context
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* @param cfg CRC config
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*/
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void rt_hwcrypto_crc_cfg(struct rt_hwcrypto_ctx *ctx,
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struct hwcrypto_crc_cfg *cfg)
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{
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if (cfg)
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{
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((struct hwcrypto_crc *)ctx)->crc_cfg = *cfg;
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}
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}
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