Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * Cryptographic API.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * SHA1 Secure Hash Algorithm.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  * Adapted for OCTEON by Aaro Koskinen <aaro.koskinen@iki.fi>.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  * Based on crypto/sha1_generic.c, which is:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11)  * Copyright (c) Alan Smithee.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12)  * Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13)  * Copyright (c) Jean-Francois Dive <jef@linuxbe.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <crypto/sha.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include <asm/byteorder.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include <asm/octeon/octeon.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #include <crypto/internal/hash.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #include "octeon-crypto.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28)  * We pass everything as 64-bit. OCTEON can handle misaligned data.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) static void octeon_sha1_store_hash(struct sha1_state *sctx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 	u64 *hash = (u64 *)sctx->state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 	union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 		u32 word[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 		u64 dword;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 	} hash_tail = { { sctx->state[4], } };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	write_octeon_64bit_hash_dword(hash[0], 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	write_octeon_64bit_hash_dword(hash[1], 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	write_octeon_64bit_hash_dword(hash_tail.dword, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 	memzero_explicit(&hash_tail.word[0], sizeof(hash_tail.word[0]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) static void octeon_sha1_read_hash(struct sha1_state *sctx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	u64 *hash = (u64 *)sctx->state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 		u32 word[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 		u64 dword;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	} hash_tail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	hash[0]		= read_octeon_64bit_hash_dword(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	hash[1]		= read_octeon_64bit_hash_dword(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	hash_tail.dword	= read_octeon_64bit_hash_dword(2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	sctx->state[4]	= hash_tail.word[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	memzero_explicit(&hash_tail.dword, sizeof(hash_tail.dword));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) static void octeon_sha1_transform(const void *_block)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	const u64 *block = _block;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	write_octeon_64bit_block_dword(block[0], 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	write_octeon_64bit_block_dword(block[1], 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	write_octeon_64bit_block_dword(block[2], 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	write_octeon_64bit_block_dword(block[3], 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	write_octeon_64bit_block_dword(block[4], 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	write_octeon_64bit_block_dword(block[5], 5);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	write_octeon_64bit_block_dword(block[6], 6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	octeon_sha1_start(block[7]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) static int octeon_sha1_init(struct shash_desc *desc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	struct sha1_state *sctx = shash_desc_ctx(desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	sctx->state[0] = SHA1_H0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	sctx->state[1] = SHA1_H1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	sctx->state[2] = SHA1_H2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	sctx->state[3] = SHA1_H3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	sctx->state[4] = SHA1_H4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	sctx->count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) static void __octeon_sha1_update(struct sha1_state *sctx, const u8 *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 				 unsigned int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	unsigned int partial;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	unsigned int done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	const u8 *src;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	partial = sctx->count % SHA1_BLOCK_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	sctx->count += len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 	done = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	src = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	if ((partial + len) >= SHA1_BLOCK_SIZE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 		if (partial) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 			done = -partial;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 			memcpy(sctx->buffer + partial, data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 			       done + SHA1_BLOCK_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 			src = sctx->buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 		do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 			octeon_sha1_transform(src);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 			done += SHA1_BLOCK_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 			src = data + done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 		} while (done + SHA1_BLOCK_SIZE <= len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 		partial = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	memcpy(sctx->buffer + partial, src, len - done);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) static int octeon_sha1_update(struct shash_desc *desc, const u8 *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 			unsigned int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	struct sha1_state *sctx = shash_desc_ctx(desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	struct octeon_cop2_state state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	 * Small updates never reach the crypto engine, so the generic sha1 is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	 * faster because of the heavyweight octeon_crypto_enable() /
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	 * octeon_crypto_disable().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	if ((sctx->count % SHA1_BLOCK_SIZE) + len < SHA1_BLOCK_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 		return crypto_sha1_update(desc, data, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	flags = octeon_crypto_enable(&state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	octeon_sha1_store_hash(sctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	__octeon_sha1_update(sctx, data, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	octeon_sha1_read_hash(sctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	octeon_crypto_disable(&state, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) static int octeon_sha1_final(struct shash_desc *desc, u8 *out)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	struct sha1_state *sctx = shash_desc_ctx(desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	static const u8 padding[64] = { 0x80, };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	struct octeon_cop2_state state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	__be32 *dst = (__be32 *)out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	unsigned int pad_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	unsigned int index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	__be64 bits;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	/* Save number of bits. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	bits = cpu_to_be64(sctx->count << 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	/* Pad out to 56 mod 64. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 	index = sctx->count & 0x3f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	pad_len = (index < 56) ? (56 - index) : ((64+56) - index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	flags = octeon_crypto_enable(&state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	octeon_sha1_store_hash(sctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	__octeon_sha1_update(sctx, padding, pad_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	/* Append length (before padding). */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	__octeon_sha1_update(sctx, (const u8 *)&bits, sizeof(bits));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	octeon_sha1_read_hash(sctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	octeon_crypto_disable(&state, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	/* Store state in digest */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	for (i = 0; i < 5; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 		dst[i] = cpu_to_be32(sctx->state[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	/* Zeroize sensitive information. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	memset(sctx, 0, sizeof(*sctx));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) static int octeon_sha1_export(struct shash_desc *desc, void *out)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	struct sha1_state *sctx = shash_desc_ctx(desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	memcpy(out, sctx, sizeof(*sctx));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) static int octeon_sha1_import(struct shash_desc *desc, const void *in)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	struct sha1_state *sctx = shash_desc_ctx(desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	memcpy(sctx, in, sizeof(*sctx));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) static struct shash_alg octeon_sha1_alg = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	.digestsize	=	SHA1_DIGEST_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 	.init		=	octeon_sha1_init,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	.update		=	octeon_sha1_update,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	.final		=	octeon_sha1_final,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	.export		=	octeon_sha1_export,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	.import		=	octeon_sha1_import,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	.descsize	=	sizeof(struct sha1_state),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	.statesize	=	sizeof(struct sha1_state),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	.base		=	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 		.cra_name	=	"sha1",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 		.cra_driver_name=	"octeon-sha1",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 		.cra_priority	=	OCTEON_CR_OPCODE_PRIORITY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 		.cra_blocksize	=	SHA1_BLOCK_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 		.cra_module	=	THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) static int __init octeon_sha1_mod_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	if (!octeon_has_crypto())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 		return -ENOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	return crypto_register_shash(&octeon_sha1_alg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) static void __exit octeon_sha1_mod_fini(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 	crypto_unregister_shash(&octeon_sha1_alg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) module_init(octeon_sha1_mod_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) module_exit(octeon_sha1_mod_fini);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) MODULE_DESCRIPTION("SHA1 Secure Hash Algorithm (OCTEON)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) MODULE_AUTHOR("Aaro Koskinen <aaro.koskinen@iki.fi>");