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7117739ad2
Instead of exposing the mips-optimized SHA-512 code via mips-specific crypto_shash algorithms, instead just implement the sha512_blocks() library function. This is much simpler, it makes the SHA-512 (and SHA-384) library functions be mips-optimized, and it fixes the longstanding issue where the mips-optimized SHA-512 code was disabled by default. SHA-512 still remains available through crypto_shash, but individual architectures no longer need to handle it. Note: to see the diff from arch/mips/cavium-octeon/crypto/octeon-sha512.c to lib/crypto/mips/sha512.h, view this commit with 'git show -M10'. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250630160320.2888-11-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org>
74 lines
2.5 KiB
C
74 lines
2.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Cryptographic API.
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*
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* SHA-512 and SHA-384 Secure Hash Algorithm.
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*
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* Adapted for OCTEON by Aaro Koskinen <aaro.koskinen@iki.fi>.
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*
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* Based on crypto/sha512_generic.c, which is:
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*
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* Copyright (c) Jean-Luc Cooke <jlcooke@certainkey.com>
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* Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk>
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* Copyright (c) 2003 Kyle McMartin <kyle@debian.org>
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*/
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#include <asm/octeon/crypto.h>
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#include <asm/octeon/octeon.h>
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/*
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* We pass everything as 64-bit. OCTEON can handle misaligned data.
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*/
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static void sha512_blocks(struct sha512_block_state *state,
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const u8 *data, size_t nblocks)
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{
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struct octeon_cop2_state cop2_state;
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unsigned long flags;
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if (!octeon_has_crypto())
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return sha512_blocks_generic(state, data, nblocks);
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flags = octeon_crypto_enable(&cop2_state);
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write_octeon_64bit_hash_sha512(state->h[0], 0);
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write_octeon_64bit_hash_sha512(state->h[1], 1);
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write_octeon_64bit_hash_sha512(state->h[2], 2);
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write_octeon_64bit_hash_sha512(state->h[3], 3);
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write_octeon_64bit_hash_sha512(state->h[4], 4);
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write_octeon_64bit_hash_sha512(state->h[5], 5);
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write_octeon_64bit_hash_sha512(state->h[6], 6);
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write_octeon_64bit_hash_sha512(state->h[7], 7);
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do {
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const u64 *block = (const u64 *)data;
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write_octeon_64bit_block_sha512(block[0], 0);
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write_octeon_64bit_block_sha512(block[1], 1);
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write_octeon_64bit_block_sha512(block[2], 2);
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write_octeon_64bit_block_sha512(block[3], 3);
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write_octeon_64bit_block_sha512(block[4], 4);
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write_octeon_64bit_block_sha512(block[5], 5);
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write_octeon_64bit_block_sha512(block[6], 6);
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write_octeon_64bit_block_sha512(block[7], 7);
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write_octeon_64bit_block_sha512(block[8], 8);
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write_octeon_64bit_block_sha512(block[9], 9);
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write_octeon_64bit_block_sha512(block[10], 10);
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write_octeon_64bit_block_sha512(block[11], 11);
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write_octeon_64bit_block_sha512(block[12], 12);
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write_octeon_64bit_block_sha512(block[13], 13);
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write_octeon_64bit_block_sha512(block[14], 14);
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octeon_sha512_start(block[15]);
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data += SHA512_BLOCK_SIZE;
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} while (--nblocks);
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state->h[0] = read_octeon_64bit_hash_sha512(0);
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state->h[1] = read_octeon_64bit_hash_sha512(1);
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state->h[2] = read_octeon_64bit_hash_sha512(2);
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state->h[3] = read_octeon_64bit_hash_sha512(3);
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state->h[4] = read_octeon_64bit_hash_sha512(4);
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state->h[5] = read_octeon_64bit_hash_sha512(5);
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state->h[6] = read_octeon_64bit_hash_sha512(6);
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state->h[7] = read_octeon_64bit_hash_sha512(7);
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octeon_crypto_disable(&cop2_state, flags);
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}
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