// SPDX-License-Identifier: GPL-2.0-or-later
  /*
   * Copyright (C) 2019 Linaro Ltd <ard.biesheuvel@linaro.org>
   */
  
  #include <asm/cpufeature.h>
  #include <asm/neon.h>
  
  #include "aegis.h"

  void crypto_aegis128_init_neon(void *state, const void *key, const void *iv);

  void crypto_aegis128_update_neon(void *state, const void *msg);
  void crypto_aegis128_encrypt_chunk_neon(void *state, void *dst, const void *src,
  					unsigned int size);
  void crypto_aegis128_decrypt_chunk_neon(void *state, void *dst, const void *src,
  					unsigned int size);

  int crypto_aegis128_final_neon(void *state, void *tag_xor,
  			       unsigned int assoclen,
  			       unsigned int cryptlen,
  			       unsigned int authsize);

  int aegis128_have_aes_insn __ro_after_init;

  bool crypto_aegis128_have_simd(void)
  {

  	if (cpu_have_feature(cpu_feature(AES))) {
  		aegis128_have_aes_insn = 1;
  		return true;
  	}
  	return IS_ENABLED(CONFIG_ARM64);

  }

  void crypto_aegis128_init_simd(struct aegis_state *state,

  			       const union aegis_block *key,
  			       const u8 *iv)
  {
  	kernel_neon_begin();
  	crypto_aegis128_init_neon(state, key, iv);
  	kernel_neon_end();
  }

  void crypto_aegis128_update_simd(struct aegis_state *state, const void *msg)

  {
  	kernel_neon_begin();
  	crypto_aegis128_update_neon(state, msg);
  	kernel_neon_end();
  }

  void crypto_aegis128_encrypt_chunk_simd(struct aegis_state *state, u8 *dst,

  					const u8 *src, unsigned int size)
  {
  	kernel_neon_begin();
  	crypto_aegis128_encrypt_chunk_neon(state, dst, src, size);
  	kernel_neon_end();
  }

  void crypto_aegis128_decrypt_chunk_simd(struct aegis_state *state, u8 *dst,

  					const u8 *src, unsigned int size)
  {
  	kernel_neon_begin();
  	crypto_aegis128_decrypt_chunk_neon(state, dst, src, size);
  	kernel_neon_end();
  }

  int crypto_aegis128_final_simd(struct aegis_state *state,

  			       union aegis_block *tag_xor,
  			       unsigned int assoclen,
  			       unsigned int cryptlen,
  			       unsigned int authsize)

  {

  	int ret;

  	kernel_neon_begin();

  	ret = crypto_aegis128_final_neon(state, tag_xor, assoclen, cryptlen,
  					 authsize);

  	kernel_neon_end();

  
  	return ret;

  }