/* SPDX-License-Identifier: GPL-2.0-only */ /* * MD5 accelerated using the sparc64 crypto opcodes * * Copyright (c) Alan Smithee. * Copyright (c) Andrew McDonald * Copyright (c) Jean-Francois Dive * Copyright (c) Mathias Krause * Copyright (c) Cryptoapi developers. * Copyright (c) 2002 James Morris */ #include #include #include static __ro_after_init DEFINE_STATIC_KEY_FALSE(have_md5_opcodes); asmlinkage void md5_sparc64_transform(struct md5_block_state *state, const u8 *data, size_t nblocks); static void md5_blocks(struct md5_block_state *state, const u8 *data, size_t nblocks) { if (static_branch_likely(&have_md5_opcodes)) { cpu_to_le32_array(state->h, ARRAY_SIZE(state->h)); md5_sparc64_transform(state, data, nblocks); le32_to_cpu_array(state->h, ARRAY_SIZE(state->h)); } else { md5_blocks_generic(state, data, nblocks); } } #define md5_mod_init_arch md5_mod_init_arch static void md5_mod_init_arch(void) { unsigned long cfr; if (!(sparc64_elf_hwcap & HWCAP_SPARC_CRYPTO)) return; __asm__ __volatile__("rd %%asr26, %0" : "=r" (cfr)); if (!(cfr & CFR_MD5)) return; static_branch_enable(&have_md5_opcodes); pr_info("Using sparc64 md5 opcode optimized MD5 implementation\n"); }