| /* 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 */ |
