149 lines
3.9 KiB
C
149 lines
3.9 KiB
C
|
/*
|
||
|
|
* Copyright (c) 2006-2019, RT-Thread Development Team
|
||
|
|
*
|
||
|
|
* SPDX-License-Identifier: Apache-2.0
|
||
|
|
*
|
||
|
|
* Change Logs:
|
||
|
|
* Date Author Notes
|
||
|
|
* 2019-04-25 tyx the first version
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef __HW_CRC_H__
|
||
|
|
#define __HW_CRC_H__
|
||
|
|
|
||
|
|
#include <hwcrypto.h>
|
||
|
|
|
||
|
|
#define CRC_FLAG_REFIN (0x1 << 0)
|
||
|
|
#define CRC_FLAG_REFOUT (0x1 << 1)
|
||
|
|
|
||
|
|
#define HWCRYPTO_CRC8_CFG \
|
||
|
|
{ \
|
||
|
|
.last_val = 0x00, \
|
||
|
|
.poly = 0x07, \
|
||
|
|
.width = 8, \
|
||
|
|
.xorout = 0x00, \
|
||
|
|
.flags = 0, \
|
||
|
|
}
|
||
|
|
|
||
|
|
#define HWCRYPTO_CRC16_CFG \
|
||
|
|
{ \
|
||
|
|
.last_val = 0x0000, \
|
||
|
|
.poly = 0x8005, \
|
||
|
|
.width = 16, \
|
||
|
|
.xorout = 0x0000, \
|
||
|
|
.flags = 0, \
|
||
|
|
}
|
||
|
|
|
||
|
|
#define HWCRYPTO_CRC32_CFG \
|
||
|
|
{ \
|
||
|
|
.last_val = 0x00000000, \
|
||
|
|
.poly = 0x04C11DB7, \
|
||
|
|
.width = 32, \
|
||
|
|
.xorout = 0x00000000, \
|
||
|
|
.flags = 0, \
|
||
|
|
}
|
||
|
|
|
||
|
|
#define HWCRYPTO_CRC_CCITT_CFG \
|
||
|
|
{ \
|
||
|
|
.last_val = 0x0000, \
|
||
|
|
.poly = 0x1021, \
|
||
|
|
.width = 16, \
|
||
|
|
.xorout = 0x0000, \
|
||
|
|
.flags = CRC_FLAG_REFIN | CRC_FLAG_REFOUT, \
|
||
|
|
}
|
||
|
|
|
||
|
|
#define HWCRYPTO_CRC_DNP_CFG \
|
||
|
|
{ \
|
||
|
|
.last_val = 0x0000, \
|
||
|
|
.poly = 0x3D65, \
|
||
|
|
.width = 16, \
|
||
|
|
.xorout = 0xffff, \
|
||
|
|
.flags = CRC_FLAG_REFIN | CRC_FLAG_REFOUT, \
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
extern "C" {
|
||
|
|
#endif
|
||
|
|
|
||
|
|
struct hwcrypto_crc;
|
||
|
|
|
||
|
|
typedef enum
|
||
|
|
{
|
||
|
|
HWCRYPTO_CRC_CUSTOM, /**< Custom CRC mode */
|
||
|
|
HWCRYPTO_CRC_CRC8, /**< poly : 0x07 */
|
||
|
|
HWCRYPTO_CRC_CRC16, /**< poly : 0x8005 */
|
||
|
|
HWCRYPTO_CRC_CRC32, /**< poly : 0x04C11DB7 */
|
||
|
|
HWCRYPTO_CRC_CCITT, /**< poly : 0x1021 */
|
||
|
|
HWCRYPTO_CRC_DNP, /**< poly : 0x3D65 */
|
||
|
|
} hwcrypto_crc_mode;
|
||
|
|
|
||
|
|
struct hwcrypto_crc_cfg
|
||
|
|
{
|
||
|
|
rt_uint32_t last_val; /**< Last CRC value cache */
|
||
|
|
rt_uint32_t poly; /**< CRC polynomial */
|
||
|
|
rt_uint16_t width; /**< CRC value width */
|
||
|
|
rt_uint32_t xorout; /**< Result XOR Value */
|
||
|
|
rt_uint16_t flags; /**< Input or output data reverse. CRC_FLAG_REFIN or CRC_FLAG_REFOUT */
|
||
|
|
};
|
||
|
|
|
||
|
|
struct hwcrypto_crc_ops
|
||
|
|
{
|
||
|
|
rt_uint32_t (*update)(struct hwcrypto_crc *ctx,
|
||
|
|
const rt_uint8_t *in, rt_size_t length); /**< Perform a CRC calculation. return CRC value */
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief CRC context. Hardware driver usage
|
||
|
|
*/
|
||
|
|
struct hwcrypto_crc
|
||
|
|
{
|
||
|
|
struct rt_hwcrypto_ctx parent; /**< Inherited from the standard device */
|
||
|
|
struct hwcrypto_crc_cfg crc_cfg; /**< CRC configure */
|
||
|
|
const struct hwcrypto_crc_ops *ops; /**< !! Hardware initializes this value when creating context !! */
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Creating CRC Context
|
||
|
|
*
|
||
|
|
* @param device Hardware crypto device
|
||
|
|
* @param mode Setting default mode or custom mode
|
||
|
|
*
|
||
|
|
* @return CRC context
|
||
|
|
*/
|
||
|
|
struct rt_hwcrypto_ctx *rt_hwcrypto_crc_create(struct rt_hwcrypto_device *device,
|
||
|
|
hwcrypto_crc_mode mode);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Destroy CRC Context
|
||
|
|
*
|
||
|
|
* @param ctx CRC context
|
||
|
|
*/
|
||
|
|
void rt_hwcrypto_crc_destroy(struct rt_hwcrypto_ctx *ctx);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Processing a packet of data
|
||
|
|
*
|
||
|
|
* @param ctx CRC context
|
||
|
|
* @param input Data buffer to be Processed
|
||
|
|
* @param length Data Buffer length
|
||
|
|
*
|
||
|
|
* @return CRC value
|
||
|
|
*/
|
||
|
|
rt_uint32_t rt_hwcrypto_crc_update(struct rt_hwcrypto_ctx *ctx,
|
||
|
|
const rt_uint8_t *input, rt_size_t length);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief CRC context configuration
|
||
|
|
*
|
||
|
|
* @param ctx CRC context
|
||
|
|
* @param cfg CRC config
|
||
|
|
*/
|
||
|
|
void rt_hwcrypto_crc_cfg(struct rt_hwcrypto_ctx *ctx,
|
||
|
|
struct hwcrypto_crc_cfg *cfg);
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif
|