Revision eb72d5207008db54c659fd34f341672decc306ae authored by Charles Keepax on 19 September 2023, 11:03:20 UTC, committed by Linus Torvalds on 23 September 2023, 18:10:23 UTC
The code was accidentally mixing new and old style macros, update the
macros used to remove an unused function warning whilst building with
no PM enabled in the config.
Fixes: ace6d1448138 ("mfd: cs42l43: Add support for cs42l43 core driver")
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/all/20230822114914.340359-1-ckeepax@opensource.cirrus.com/
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Tested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Lee Jones <lee@kernel.org>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 93397d3
cast6_generic.c
// SPDX-License-Identifier: GPL-2.0-or-later
/* Kernel cryptographic api.
* cast6.c - Cast6 cipher algorithm [rfc2612].
*
* CAST-256 (*cast6*) is a DES like Substitution-Permutation Network (SPN)
* cryptosystem built upon the CAST-128 (*cast5*) [rfc2144] encryption
* algorithm.
*
* Copyright (C) 2003 Kartikey Mahendra Bhatt <kartik_me@hotmail.com>.
*/
#include <asm/unaligned.h>
#include <crypto/algapi.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/types.h>
#include <crypto/cast6.h>
#define s1 cast_s1
#define s2 cast_s2
#define s3 cast_s3
#define s4 cast_s4
#define F1(D, r, m) ((I = ((m) + (D))), (I = rol32(I, (r))), \
(((s1[I >> 24] ^ s2[(I>>16)&0xff]) - s3[(I>>8)&0xff]) + s4[I&0xff]))
#define F2(D, r, m) ((I = ((m) ^ (D))), (I = rol32(I, (r))), \
(((s1[I >> 24] - s2[(I>>16)&0xff]) + s3[(I>>8)&0xff]) ^ s4[I&0xff]))
#define F3(D, r, m) ((I = ((m) - (D))), (I = rol32(I, (r))), \
(((s1[I >> 24] + s2[(I>>16)&0xff]) ^ s3[(I>>8)&0xff]) - s4[I&0xff]))
static const u32 Tm[24][8] = {
{ 0x5a827999, 0xc95c653a, 0x383650db, 0xa7103c7c, 0x15ea281d,
0x84c413be, 0xf39dff5f, 0x6277eb00 } ,
{ 0xd151d6a1, 0x402bc242, 0xaf05ade3, 0x1ddf9984, 0x8cb98525,
0xfb9370c6, 0x6a6d5c67, 0xd9474808 } ,
{ 0x482133a9, 0xb6fb1f4a, 0x25d50aeb, 0x94aef68c, 0x0388e22d,
0x7262cdce, 0xe13cb96f, 0x5016a510 } ,
{ 0xbef090b1, 0x2dca7c52, 0x9ca467f3, 0x0b7e5394, 0x7a583f35,
0xe9322ad6, 0x580c1677, 0xc6e60218 } ,
{ 0x35bfedb9, 0xa499d95a, 0x1373c4fb, 0x824db09c, 0xf1279c3d,
0x600187de, 0xcedb737f, 0x3db55f20 } ,
{ 0xac8f4ac1, 0x1b693662, 0x8a432203, 0xf91d0da4, 0x67f6f945,
0xd6d0e4e6, 0x45aad087, 0xb484bc28 } ,
{ 0x235ea7c9, 0x9238936a, 0x01127f0b, 0x6fec6aac, 0xdec6564d,
0x4da041ee, 0xbc7a2d8f, 0x2b541930 } ,
{ 0x9a2e04d1, 0x0907f072, 0x77e1dc13, 0xe6bbc7b4, 0x5595b355,
0xc46f9ef6, 0x33498a97, 0xa2237638 } ,
{ 0x10fd61d9, 0x7fd74d7a, 0xeeb1391b, 0x5d8b24bc, 0xcc65105d,
0x3b3efbfe, 0xaa18e79f, 0x18f2d340 } ,
{ 0x87ccbee1, 0xf6a6aa82, 0x65809623, 0xd45a81c4, 0x43346d65,
0xb20e5906, 0x20e844a7, 0x8fc23048 } ,
{ 0xfe9c1be9, 0x6d76078a, 0xdc4ff32b, 0x4b29decc, 0xba03ca6d,
0x28ddb60e, 0x97b7a1af, 0x06918d50 } ,
{ 0x756b78f1, 0xe4456492, 0x531f5033, 0xc1f93bd4, 0x30d32775,
0x9fad1316, 0x0e86feb7, 0x7d60ea58 } ,
{ 0xec3ad5f9, 0x5b14c19a, 0xc9eead3b, 0x38c898dc, 0xa7a2847d,
0x167c701e, 0x85565bbf, 0xf4304760 } ,
{ 0x630a3301, 0xd1e41ea2, 0x40be0a43, 0xaf97f5e4, 0x1e71e185,
0x8d4bcd26, 0xfc25b8c7, 0x6affa468 } ,
{ 0xd9d99009, 0x48b37baa, 0xb78d674b, 0x266752ec, 0x95413e8d,
0x041b2a2e, 0x72f515cf, 0xe1cf0170 } ,
{ 0x50a8ed11, 0xbf82d8b2, 0x2e5cc453, 0x9d36aff4, 0x0c109b95,
0x7aea8736, 0xe9c472d7, 0x589e5e78 } ,
{ 0xc7784a19, 0x365235ba, 0xa52c215b, 0x14060cfc, 0x82dff89d,
0xf1b9e43e, 0x6093cfdf, 0xcf6dbb80 } ,
{ 0x3e47a721, 0xad2192c2, 0x1bfb7e63, 0x8ad56a04, 0xf9af55a5,
0x68894146, 0xd7632ce7, 0x463d1888 } ,
{ 0xb5170429, 0x23f0efca, 0x92cadb6b, 0x01a4c70c, 0x707eb2ad,
0xdf589e4e, 0x4e3289ef, 0xbd0c7590 } ,
{ 0x2be66131, 0x9ac04cd2, 0x099a3873, 0x78742414, 0xe74e0fb5,
0x5627fb56, 0xc501e6f7, 0x33dbd298 } ,
{ 0xa2b5be39, 0x118fa9da, 0x8069957b, 0xef43811c, 0x5e1d6cbd,
0xccf7585e, 0x3bd143ff, 0xaaab2fa0 } ,
{ 0x19851b41, 0x885f06e2, 0xf738f283, 0x6612de24, 0xd4ecc9c5,
0x43c6b566, 0xb2a0a107, 0x217a8ca8 } ,
{ 0x90547849, 0xff2e63ea, 0x6e084f8b, 0xdce23b2c, 0x4bbc26cd,
0xba96126e, 0x296ffe0f, 0x9849e9b0 } ,
{ 0x0723d551, 0x75fdc0f2, 0xe4d7ac93, 0x53b19834, 0xc28b83d5,
0x31656f76, 0xa03f5b17, 0x0f1946b8 }
};
static const u8 Tr[4][8] = {
{ 0x13, 0x04, 0x15, 0x06, 0x17, 0x08, 0x19, 0x0a } ,
{ 0x1b, 0x0c, 0x1d, 0x0e, 0x1f, 0x10, 0x01, 0x12 } ,
{ 0x03, 0x14, 0x05, 0x16, 0x07, 0x18, 0x09, 0x1a } ,
{ 0x0b, 0x1c, 0x0d, 0x1e, 0x0f, 0x00, 0x11, 0x02 }
};
/* forward octave */
static inline void W(u32 *key, unsigned int i)
{
u32 I;
key[6] ^= F1(key[7], Tr[i % 4][0], Tm[i][0]);
key[5] ^= F2(key[6], Tr[i % 4][1], Tm[i][1]);
key[4] ^= F3(key[5], Tr[i % 4][2], Tm[i][2]);
key[3] ^= F1(key[4], Tr[i % 4][3], Tm[i][3]);
key[2] ^= F2(key[3], Tr[i % 4][4], Tm[i][4]);
key[1] ^= F3(key[2], Tr[i % 4][5], Tm[i][5]);
key[0] ^= F1(key[1], Tr[i % 4][6], Tm[i][6]);
key[7] ^= F2(key[0], Tr[i % 4][7], Tm[i][7]);
}
int __cast6_setkey(struct cast6_ctx *c, const u8 *in_key, unsigned int key_len)
{
int i;
u32 key[8];
__be32 p_key[8]; /* padded key */
if (key_len % 4 != 0)
return -EINVAL;
memset(p_key, 0, 32);
memcpy(p_key, in_key, key_len);
key[0] = be32_to_cpu(p_key[0]); /* A */
key[1] = be32_to_cpu(p_key[1]); /* B */
key[2] = be32_to_cpu(p_key[2]); /* C */
key[3] = be32_to_cpu(p_key[3]); /* D */
key[4] = be32_to_cpu(p_key[4]); /* E */
key[5] = be32_to_cpu(p_key[5]); /* F */
key[6] = be32_to_cpu(p_key[6]); /* G */
key[7] = be32_to_cpu(p_key[7]); /* H */
for (i = 0; i < 12; i++) {
W(key, 2 * i);
W(key, 2 * i + 1);
c->Kr[i][0] = key[0] & 0x1f;
c->Kr[i][1] = key[2] & 0x1f;
c->Kr[i][2] = key[4] & 0x1f;
c->Kr[i][3] = key[6] & 0x1f;
c->Km[i][0] = key[7];
c->Km[i][1] = key[5];
c->Km[i][2] = key[3];
c->Km[i][3] = key[1];
}
return 0;
}
EXPORT_SYMBOL_GPL(__cast6_setkey);
int cast6_setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen)
{
return __cast6_setkey(crypto_tfm_ctx(tfm), key, keylen);
}
EXPORT_SYMBOL_GPL(cast6_setkey);
/*forward quad round*/
static inline void Q(u32 *block, const u8 *Kr, const u32 *Km)
{
u32 I;
block[2] ^= F1(block[3], Kr[0], Km[0]);
block[1] ^= F2(block[2], Kr[1], Km[1]);
block[0] ^= F3(block[1], Kr[2], Km[2]);
block[3] ^= F1(block[0], Kr[3], Km[3]);
}
/*reverse quad round*/
static inline void QBAR(u32 *block, const u8 *Kr, const u32 *Km)
{
u32 I;
block[3] ^= F1(block[0], Kr[3], Km[3]);
block[0] ^= F3(block[1], Kr[2], Km[2]);
block[1] ^= F2(block[2], Kr[1], Km[1]);
block[2] ^= F1(block[3], Kr[0], Km[0]);
}
void __cast6_encrypt(const void *ctx, u8 *outbuf, const u8 *inbuf)
{
const struct cast6_ctx *c = ctx;
u32 block[4];
const u32 *Km;
const u8 *Kr;
block[0] = get_unaligned_be32(inbuf);
block[1] = get_unaligned_be32(inbuf + 4);
block[2] = get_unaligned_be32(inbuf + 8);
block[3] = get_unaligned_be32(inbuf + 12);
Km = c->Km[0]; Kr = c->Kr[0]; Q(block, Kr, Km);
Km = c->Km[1]; Kr = c->Kr[1]; Q(block, Kr, Km);
Km = c->Km[2]; Kr = c->Kr[2]; Q(block, Kr, Km);
Km = c->Km[3]; Kr = c->Kr[3]; Q(block, Kr, Km);
Km = c->Km[4]; Kr = c->Kr[4]; Q(block, Kr, Km);
Km = c->Km[5]; Kr = c->Kr[5]; Q(block, Kr, Km);
Km = c->Km[6]; Kr = c->Kr[6]; QBAR(block, Kr, Km);
Km = c->Km[7]; Kr = c->Kr[7]; QBAR(block, Kr, Km);
Km = c->Km[8]; Kr = c->Kr[8]; QBAR(block, Kr, Km);
Km = c->Km[9]; Kr = c->Kr[9]; QBAR(block, Kr, Km);
Km = c->Km[10]; Kr = c->Kr[10]; QBAR(block, Kr, Km);
Km = c->Km[11]; Kr = c->Kr[11]; QBAR(block, Kr, Km);
put_unaligned_be32(block[0], outbuf);
put_unaligned_be32(block[1], outbuf + 4);
put_unaligned_be32(block[2], outbuf + 8);
put_unaligned_be32(block[3], outbuf + 12);
}
EXPORT_SYMBOL_GPL(__cast6_encrypt);
static void cast6_encrypt(struct crypto_tfm *tfm, u8 *outbuf, const u8 *inbuf)
{
__cast6_encrypt(crypto_tfm_ctx(tfm), outbuf, inbuf);
}
void __cast6_decrypt(const void *ctx, u8 *outbuf, const u8 *inbuf)
{
const struct cast6_ctx *c = ctx;
u32 block[4];
const u32 *Km;
const u8 *Kr;
block[0] = get_unaligned_be32(inbuf);
block[1] = get_unaligned_be32(inbuf + 4);
block[2] = get_unaligned_be32(inbuf + 8);
block[3] = get_unaligned_be32(inbuf + 12);
Km = c->Km[11]; Kr = c->Kr[11]; Q(block, Kr, Km);
Km = c->Km[10]; Kr = c->Kr[10]; Q(block, Kr, Km);
Km = c->Km[9]; Kr = c->Kr[9]; Q(block, Kr, Km);
Km = c->Km[8]; Kr = c->Kr[8]; Q(block, Kr, Km);
Km = c->Km[7]; Kr = c->Kr[7]; Q(block, Kr, Km);
Km = c->Km[6]; Kr = c->Kr[6]; Q(block, Kr, Km);
Km = c->Km[5]; Kr = c->Kr[5]; QBAR(block, Kr, Km);
Km = c->Km[4]; Kr = c->Kr[4]; QBAR(block, Kr, Km);
Km = c->Km[3]; Kr = c->Kr[3]; QBAR(block, Kr, Km);
Km = c->Km[2]; Kr = c->Kr[2]; QBAR(block, Kr, Km);
Km = c->Km[1]; Kr = c->Kr[1]; QBAR(block, Kr, Km);
Km = c->Km[0]; Kr = c->Kr[0]; QBAR(block, Kr, Km);
put_unaligned_be32(block[0], outbuf);
put_unaligned_be32(block[1], outbuf + 4);
put_unaligned_be32(block[2], outbuf + 8);
put_unaligned_be32(block[3], outbuf + 12);
}
EXPORT_SYMBOL_GPL(__cast6_decrypt);
static void cast6_decrypt(struct crypto_tfm *tfm, u8 *outbuf, const u8 *inbuf)
{
__cast6_decrypt(crypto_tfm_ctx(tfm), outbuf, inbuf);
}
static struct crypto_alg alg = {
.cra_name = "cast6",
.cra_driver_name = "cast6-generic",
.cra_priority = 100,
.cra_flags = CRYPTO_ALG_TYPE_CIPHER,
.cra_blocksize = CAST6_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct cast6_ctx),
.cra_module = THIS_MODULE,
.cra_u = {
.cipher = {
.cia_min_keysize = CAST6_MIN_KEY_SIZE,
.cia_max_keysize = CAST6_MAX_KEY_SIZE,
.cia_setkey = cast6_setkey,
.cia_encrypt = cast6_encrypt,
.cia_decrypt = cast6_decrypt}
}
};
static int __init cast6_mod_init(void)
{
return crypto_register_alg(&alg);
}
static void __exit cast6_mod_fini(void)
{
crypto_unregister_alg(&alg);
}
subsys_initcall(cast6_mod_init);
module_exit(cast6_mod_fini);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Cast6 Cipher Algorithm");
MODULE_ALIAS_CRYPTO("cast6");
MODULE_ALIAS_CRYPTO("cast6-generic");
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