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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Shared crypto simd helpers
*/
#ifndef _CRYPTO_INTERNAL_SIMD_H
#define _CRYPTO_INTERNAL_SIMD_H
#include <asm/simd.h>
#include <linux/percpu.h>
#include <linux/types.h>
struct simd_aead_alg;
struct aead_alg;
int simd_register_aeads_compat(struct aead_alg *algs, int count,
struct simd_aead_alg **simd_algs);
void simd_unregister_aeads(struct aead_alg *algs, int count,
struct simd_aead_alg **simd_algs);
/*
* crypto_simd_usable() - is it allowed at this time to use SIMD instructions or
* access the SIMD register file?
*
* This delegates to may_use_simd(), except that this also returns false if SIMD
* in crypto code has been temporarily disabled on this CPU by the crypto
* self-tests, in order to test the no-SIMD fallback code. This override is
* currently limited to configurations where the "full" self-tests are enabled,
* because it might be a bit too invasive to be part of the "fast" self-tests.
*/
#ifdef CONFIG_CRYPTO_SELFTESTS_FULL
DECLARE_PER_CPU(bool, crypto_simd_disabled_for_test);
#define crypto_simd_usable() \
(may_use_simd() && !this_cpu_read(crypto_simd_disabled_for_test))
#else
#define crypto_simd_usable() may_use_simd()
#endif
#endif /* _CRYPTO_INTERNAL_SIMD_H */
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