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/* SPDX-License-Identifier: GPL-2.0 */
/*
* ChaCha and HChaCha functions (MIPS optimized)
*
* Copyright (C) 2019 Linaro, Ltd. <ard.biesheuvel@linaro.org>
*/
#include <linux/kernel.h>
#include <linux/sizes.h>
asmlinkage void chacha_crypt_mips(struct chacha_state *state, u8 *dst,
const u8 *src, size_t bytes, int nrounds);
asmlinkage void hchacha_block_arch(const struct chacha_state *state,
u32 out[HCHACHA_OUT_WORDS], int nrounds);
static void chacha_crypt_arch(struct chacha_state *state, u8 *dst,
const u8 *src, size_t bytes, int nrounds)
{
/*
* chacha_crypt_mips() compares the length as a signed value, so pass
* it at most 1 GiB at a time.
*/
do {
size_t todo = min(bytes, SZ_1G);
chacha_crypt_mips(state, dst, src, todo, nrounds);
bytes -= todo;
src += todo;
dst += todo;
} while (bytes);
}
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