diff options
Diffstat (limited to 'lib/crypto/arm/sha512.h')
| -rw-r--r-- | lib/crypto/arm/sha512.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/lib/crypto/arm/sha512.h b/lib/crypto/arm/sha512.h new file mode 100644 index 000000000000..f147b6490d6c --- /dev/null +++ b/lib/crypto/arm/sha512.h @@ -0,0 +1,38 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * arm32-optimized SHA-512 block function + * + * Copyright 2025 Google LLC + */ + +#include <asm/neon.h> +#include <crypto/internal/simd.h> + +static __ro_after_init DEFINE_STATIC_KEY_FALSE(have_neon); + +asmlinkage void sha512_block_data_order(struct sha512_block_state *state, + const u8 *data, size_t nblocks); +asmlinkage void sha512_block_data_order_neon(struct sha512_block_state *state, + const u8 *data, size_t nblocks); + +static void sha512_blocks(struct sha512_block_state *state, + const u8 *data, size_t nblocks) +{ + if (IS_ENABLED(CONFIG_KERNEL_MODE_NEON) && + static_branch_likely(&have_neon) && likely(crypto_simd_usable())) { + kernel_neon_begin(); + sha512_block_data_order_neon(state, data, nblocks); + kernel_neon_end(); + } else { + sha512_block_data_order(state, data, nblocks); + } +} + +#ifdef CONFIG_KERNEL_MODE_NEON +#define sha512_mod_init_arch sha512_mod_init_arch +static inline void sha512_mod_init_arch(void) +{ + if (cpu_has_neon()) + static_branch_enable(&have_neon); +} +#endif /* CONFIG_KERNEL_MODE_NEON */ |