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/*
* Cryptographic API.
*
* MD5 Message Digest Algorithm (RFC1321).
*
* Adapted for OCTEON by Aaro Koskinen <aaro.koskinen@iki.fi>.
*
* Based on crypto/md5.c, which is:
*
* Derived from cryptoapi implementation, originally based on the
* public domain implementation written by Colin Plumb in 1993.
*
* Copyright (c) Cryptoapi developers.
* Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*/
#include <asm/octeon/crypto.h>
#include <asm/octeon/octeon.h>
/*
* We pass everything as 64-bit. OCTEON can handle misaligned data.
*/
static void md5_blocks(struct md5_block_state *state,
const u8 *data, size_t nblocks)
{
struct octeon_cop2_state cop2_state;
u64 *state64 = (u64 *)state;
unsigned long flags;
if (!octeon_has_crypto())
return md5_blocks_generic(state, data, nblocks);
cpu_to_le32_array(state->h, ARRAY_SIZE(state->h));
flags = octeon_crypto_enable(&cop2_state);
write_octeon_64bit_hash_dword(state64[0], 0);
write_octeon_64bit_hash_dword(state64[1], 1);
do {
const u64 *block = (const u64 *)data;
write_octeon_64bit_block_dword(block[0], 0);
write_octeon_64bit_block_dword(block[1], 1);
write_octeon_64bit_block_dword(block[2], 2);
write_octeon_64bit_block_dword(block[3], 3);
write_octeon_64bit_block_dword(block[4], 4);
write_octeon_64bit_block_dword(block[5], 5);
write_octeon_64bit_block_dword(block[6], 6);
octeon_md5_start(block[7]);
data += MD5_BLOCK_SIZE;
} while (--nblocks);
state64[0] = read_octeon_64bit_hash_dword(0);
state64[1] = read_octeon_64bit_hash_dword(1);
octeon_crypto_disable(&cop2_state, flags);
le32_to_cpu_array(state->h, ARRAY_SIZE(state->h));
}
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