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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Header file for SHA hardware acceleration
*
* Copyright (c) 2012 Samsung Electronics
*/
#ifndef __HW_SHA_H
#define __HW_SHA_H
#include <hash.h>
/**
* Computes hash value of input pbuf using h/w acceleration
*
* @param in_addr A pointer to the input buffer
* @param bufleni Byte length of input buffer
* @param out_addr A pointer to the output buffer. When complete
* 32 bytes are copied to pout[0]...pout[31]. Thus, a user
* should allocate at least 32 bytes at pOut in advance.
* @param chunk_size chunk size for sha256
*/
void hw_sha256(const uchar * in_addr, uint buflen,
uchar * out_addr, uint chunk_size);
/**
* Computes hash value of input pbuf using h/w acceleration
*
* @param in_addr A pointer to the input buffer
* @param bufleni Byte length of input buffer
* @param out_addr A pointer to the output buffer. When complete
* 32 bytes are copied to pout[0]...pout[31]. Thus, a user
* should allocate at least 32 bytes at pOut in advance.
* @param chunk_size chunk_size for sha1
*/
void hw_sha1(const uchar * in_addr, uint buflen,
uchar * out_addr, uint chunk_size);
/*
* Create the context for sha progressive hashing using h/w acceleration
*
* @algo: Pointer to the hash_algo struct
* @ctxp: Pointer to the pointer of the context for hashing
* @return 0 if ok, -ve on error
*/
int hw_sha_init(struct hash_algo *algo, void **ctxp);
/*
* Update buffer for sha progressive hashing using h/w acceleration
*
* The context is freed by this function if an error occurs.
*
* @algo: Pointer to the hash_algo struct
* @ctx: Pointer to the context for hashing
* @buf: Pointer to the buffer being hashed
* @size: Size of the buffer being hashed
* @is_last: 1 if this is the last update; 0 otherwise
* @return 0 if ok, -ve on error
*/
int hw_sha_update(struct hash_algo *algo, void *ctx, const void *buf,
unsigned int size, int is_last);
/*
* Copy sha hash result at destination location
*
* The context is freed after completion of hash operation or after an error.
*
* @algo: Pointer to the hash_algo struct
* @ctx: Pointer to the context for hashing
* @dest_buf: Pointer to the destination buffer where hash is to be copied
* @size: Size of the buffer being hashed
* @return 0 if ok, -ve on error
*/
int hw_sha_finish(struct hash_algo *algo, void *ctx, void *dest_buf,
int size);
#endif
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