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5012bd2dc6
Drop 'inline' from all the *_mod_init_arch() functions so that the compiler will warn about any bugs where they are unused due to not being wired up properly. (There are no such bugs currently, so this just establishes a more robust convention for the future. Of course, these functions also tend to get inlined anyway, regardless of the keyword.) Link: https://lore.kernel.org/r/20250816020457.432040-1-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org>
43 lines
1.2 KiB
C
43 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* SHA-256 (RISC-V accelerated)
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*
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* Copyright (C) 2022 VRULL GmbH
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* Author: Heiko Stuebner <heiko.stuebner@vrull.eu>
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*
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* Copyright (C) 2023 SiFive, Inc.
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* Author: Jerry Shih <jerry.shih@sifive.com>
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*/
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#include <asm/simd.h>
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#include <asm/vector.h>
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static __ro_after_init DEFINE_STATIC_KEY_FALSE(have_extensions);
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asmlinkage void
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sha256_transform_zvknha_or_zvknhb_zvkb(struct sha256_block_state *state,
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const u8 *data, size_t nblocks);
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static void sha256_blocks(struct sha256_block_state *state,
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const u8 *data, size_t nblocks)
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{
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if (static_branch_likely(&have_extensions) && likely(may_use_simd())) {
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kernel_vector_begin();
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sha256_transform_zvknha_or_zvknhb_zvkb(state, data, nblocks);
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kernel_vector_end();
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} else {
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sha256_blocks_generic(state, data, nblocks);
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}
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}
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#define sha256_mod_init_arch sha256_mod_init_arch
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static void sha256_mod_init_arch(void)
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{
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/* Both zvknha and zvknhb provide the SHA-256 instructions. */
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if ((riscv_isa_extension_available(NULL, ZVKNHA) ||
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riscv_isa_extension_available(NULL, ZVKNHB)) &&
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riscv_isa_extension_available(NULL, ZVKB) &&
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riscv_vector_vlen() >= 128)
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static_branch_enable(&have_extensions);
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}
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