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/* 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 */
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