1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Cryptographic API. 4 * 5 * SHA-512 and SHA-384 Secure Hash Algorithm. 6 * 7 * Adapted for OCTEON by Aaro Koskinen <aaro.koskinen@iki.fi>. 8 * 9 * Based on crypto/sha512_generic.c, which is: 10 * 11 * Copyright (c) Jean-Luc Cooke <jlcooke@certainkey.com> 12 * Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk> 13 * Copyright (c) 2003 Kyle McMartin <kyle@debian.org> 14 */ 15 16 #include <asm/octeon/crypto.h> 17 #include <asm/octeon/octeon.h> 18 19 /* 20 * We pass everything as 64-bit. OCTEON can handle misaligned data. 21 */ 22 23 static void sha512_blocks(struct sha512_block_state *state, 24 const u8 *data, size_t nblocks) 25 { 26 struct octeon_cop2_state cop2_state; 27 unsigned long flags; 28 29 if (!octeon_has_crypto()) 30 return sha512_blocks_generic(state, data, nblocks); 31 32 flags = octeon_crypto_enable(&cop2_state); 33 write_octeon_64bit_hash_sha512(state->h[0], 0); 34 write_octeon_64bit_hash_sha512(state->h[1], 1); 35 write_octeon_64bit_hash_sha512(state->h[2], 2); 36 write_octeon_64bit_hash_sha512(state->h[3], 3); 37 write_octeon_64bit_hash_sha512(state->h[4], 4); 38 write_octeon_64bit_hash_sha512(state->h[5], 5); 39 write_octeon_64bit_hash_sha512(state->h[6], 6); 40 write_octeon_64bit_hash_sha512(state->h[7], 7); 41 42 do { 43 const u64 *block = (const u64 *)data; 44 45 write_octeon_64bit_block_sha512(block[0], 0); 46 write_octeon_64bit_block_sha512(block[1], 1); 47 write_octeon_64bit_block_sha512(block[2], 2); 48 write_octeon_64bit_block_sha512(block[3], 3); 49 write_octeon_64bit_block_sha512(block[4], 4); 50 write_octeon_64bit_block_sha512(block[5], 5); 51 write_octeon_64bit_block_sha512(block[6], 6); 52 write_octeon_64bit_block_sha512(block[7], 7); 53 write_octeon_64bit_block_sha512(block[8], 8); 54 write_octeon_64bit_block_sha512(block[9], 9); 55 write_octeon_64bit_block_sha512(block[10], 10); 56 write_octeon_64bit_block_sha512(block[11], 11); 57 write_octeon_64bit_block_sha512(block[12], 12); 58 write_octeon_64bit_block_sha512(block[13], 13); 59 write_octeon_64bit_block_sha512(block[14], 14); 60 octeon_sha512_start(block[15]); 61 62 data += SHA512_BLOCK_SIZE; 63 } while (--nblocks); 64 65 state->h[0] = read_octeon_64bit_hash_sha512(0); 66 state->h[1] = read_octeon_64bit_hash_sha512(1); 67 state->h[2] = read_octeon_64bit_hash_sha512(2); 68 state->h[3] = read_octeon_64bit_hash_sha512(3); 69 state->h[4] = read_octeon_64bit_hash_sha512(4); 70 state->h[5] = read_octeon_64bit_hash_sha512(5); 71 state->h[6] = read_octeon_64bit_hash_sha512(6); 72 state->h[7] = read_octeon_64bit_hash_sha512(7); 73 octeon_crypto_disable(&cop2_state, flags); 74 } 75