1*c9e5ac0aSEric Biggers /*
2*c9e5ac0aSEric Biggers * Cryptographic API.
3*c9e5ac0aSEric Biggers *
4*c9e5ac0aSEric Biggers * MD5 Message Digest Algorithm (RFC1321).
5*c9e5ac0aSEric Biggers *
6*c9e5ac0aSEric Biggers * Adapted for OCTEON by Aaro Koskinen <aaro.koskinen@iki.fi>.
7*c9e5ac0aSEric Biggers *
8*c9e5ac0aSEric Biggers * Based on crypto/md5.c, which is:
9*c9e5ac0aSEric Biggers *
10*c9e5ac0aSEric Biggers * Derived from cryptoapi implementation, originally based on the
11*c9e5ac0aSEric Biggers * public domain implementation written by Colin Plumb in 1993.
12*c9e5ac0aSEric Biggers *
13*c9e5ac0aSEric Biggers * Copyright (c) Cryptoapi developers.
14*c9e5ac0aSEric Biggers * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
15*c9e5ac0aSEric Biggers *
16*c9e5ac0aSEric Biggers * This program is free software; you can redistribute it and/or modify it
17*c9e5ac0aSEric Biggers * under the terms of the GNU General Public License as published by the Free
18*c9e5ac0aSEric Biggers * Software Foundation; either version 2 of the License, or (at your option)
19*c9e5ac0aSEric Biggers * any later version.
20*c9e5ac0aSEric Biggers */
21*c9e5ac0aSEric Biggers
22*c9e5ac0aSEric Biggers #include <asm/octeon/crypto.h>
23*c9e5ac0aSEric Biggers #include <asm/octeon/octeon.h>
24*c9e5ac0aSEric Biggers
25*c9e5ac0aSEric Biggers /*
26*c9e5ac0aSEric Biggers * We pass everything as 64-bit. OCTEON can handle misaligned data.
27*c9e5ac0aSEric Biggers */
28*c9e5ac0aSEric Biggers
md5_blocks(struct md5_block_state * state,const u8 * data,size_t nblocks)29*c9e5ac0aSEric Biggers static void md5_blocks(struct md5_block_state *state,
30*c9e5ac0aSEric Biggers const u8 *data, size_t nblocks)
31*c9e5ac0aSEric Biggers {
32*c9e5ac0aSEric Biggers struct octeon_cop2_state cop2_state;
33*c9e5ac0aSEric Biggers u64 *state64 = (u64 *)state;
34*c9e5ac0aSEric Biggers unsigned long flags;
35*c9e5ac0aSEric Biggers
36*c9e5ac0aSEric Biggers if (!octeon_has_crypto())
37*c9e5ac0aSEric Biggers return md5_blocks_generic(state, data, nblocks);
38*c9e5ac0aSEric Biggers
39*c9e5ac0aSEric Biggers cpu_to_le32_array(state->h, ARRAY_SIZE(state->h));
40*c9e5ac0aSEric Biggers
41*c9e5ac0aSEric Biggers flags = octeon_crypto_enable(&cop2_state);
42*c9e5ac0aSEric Biggers write_octeon_64bit_hash_dword(state64[0], 0);
43*c9e5ac0aSEric Biggers write_octeon_64bit_hash_dword(state64[1], 1);
44*c9e5ac0aSEric Biggers
45*c9e5ac0aSEric Biggers do {
46*c9e5ac0aSEric Biggers const u64 *block = (const u64 *)data;
47*c9e5ac0aSEric Biggers
48*c9e5ac0aSEric Biggers write_octeon_64bit_block_dword(block[0], 0);
49*c9e5ac0aSEric Biggers write_octeon_64bit_block_dword(block[1], 1);
50*c9e5ac0aSEric Biggers write_octeon_64bit_block_dword(block[2], 2);
51*c9e5ac0aSEric Biggers write_octeon_64bit_block_dword(block[3], 3);
52*c9e5ac0aSEric Biggers write_octeon_64bit_block_dword(block[4], 4);
53*c9e5ac0aSEric Biggers write_octeon_64bit_block_dword(block[5], 5);
54*c9e5ac0aSEric Biggers write_octeon_64bit_block_dword(block[6], 6);
55*c9e5ac0aSEric Biggers octeon_md5_start(block[7]);
56*c9e5ac0aSEric Biggers
57*c9e5ac0aSEric Biggers data += MD5_BLOCK_SIZE;
58*c9e5ac0aSEric Biggers } while (--nblocks);
59*c9e5ac0aSEric Biggers
60*c9e5ac0aSEric Biggers state64[0] = read_octeon_64bit_hash_dword(0);
61*c9e5ac0aSEric Biggers state64[1] = read_octeon_64bit_hash_dword(1);
62*c9e5ac0aSEric Biggers octeon_crypto_disable(&cop2_state, flags);
63*c9e5ac0aSEric Biggers
64*c9e5ac0aSEric Biggers le32_to_cpu_array(state->h, ARRAY_SIZE(state->h));
65*c9e5ac0aSEric Biggers }
66