linux/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-prng.c

// SPDX-License-Identifier: GPL-2.0
/*
 * sun8i-ss-prng.c - hardware cryptographic offloader for
 * Allwinner A80/A83T SoC
 *
 * Copyright (C) 2015-2020 Corentin Labbe <[email protected]>
 *
 * This file handle the PRNG found in the SS
 *
 * You could find a link for the datasheet in Documentation/arch/arm/sunxi.rst
 */
#include "sun8i-ss.h"
#include <linux/dma-mapping.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/pm_runtime.h>
#include <crypto/internal/rng.h>

int sun8i_ss_prng_seed(struct crypto_rng *tfm, const u8 *seed,
		       unsigned int slen)
{ … }

int sun8i_ss_prng_init(struct crypto_tfm *tfm)
{ … }

void sun8i_ss_prng_exit(struct crypto_tfm *tfm)
{ … }

int sun8i_ss_prng_generate(struct crypto_rng *tfm, const u8 *src,
			   unsigned int slen, u8 *dst, unsigned int dlen)
{ … }