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Commit 60468255 authored by Jussi Kivilinna's avatar Jussi Kivilinna Committed by Russell King
Browse files

ARM: 8119/1: crypto: sha1: add ARM NEON implementation 



This patch adds ARM NEON assembly implementation of SHA-1 algorithm.

tcrypt benchmark results on Cortex-A8, sha1-arm-asm vs sha1-neon-asm:

block-size      bytes/update    old-vs-new
16              16              1.04x
64              16              1.02x
64              64              1.05x
256             16              1.03x
256             64              1.04x
256             256             1.30x
1024            16              1.03x
1024            256             1.36x
1024            1024            1.52x
2048            16              1.03x
2048            256             1.39x
2048            1024            1.55x
2048            2048            1.59x
4096            16              1.03x
4096            256             1.40x
4096            1024            1.57x
4096            4096            1.62x
8192            16              1.03x
8192            256             1.40x
8192            1024            1.58x
8192            4096            1.63x
8192            8192            1.63x

Acked-by: default avatarArd Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: default avatarArd Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: default avatarJussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 1f8673d3

arch/arm/crypto/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -5,10 +5,12 @@ 
obj-$(CONFIG_CRYPTO_AES_ARM) += aes-arm.o

obj-$(CONFIG_CRYPTO_AES_ARM_BS) += aes-arm-bs.o

obj-$(CONFIG_CRYPTO_SHA1_ARM) += sha1-arm.o

obj-$(CONFIG_CRYPTO_SHA1_ARM_NEON) += sha1-arm-neon.o



aes-arm-y	:= aes-armv4.o aes_glue.o

aes-arm-bs-y	:= aesbs-core.o aesbs-glue.o

sha1-arm-y	:= sha1-armv4-large.o sha1_glue.o

sha1-arm-neon-y	:= sha1-armv7-neon.o sha1_neon_glue.o



quiet_cmd_perl = PERL    $@

      cmd_perl = $(PERL) $(<) > $(@)

arch/arm/crypto/sha1-armv7-neon.S

0 → 100644
+634 −0

File added.

Preview size limit exceeded, changes collapsed.

arch/arm/crypto/sha1_glue.c

+5 −3
Original line number Diff line number Diff line
@@ -23,6 +23,7 @@ 
#include <linux/types.h>

#include <crypto/sha.h>

#include <asm/byteorder.h>

#include <asm/crypto/sha1.h>





asmlinkage void sha1_block_data_order(u32 *digest,
@@ -65,7 +66,7 @@ static int __sha1_update(struct sha1_state *sctx, const u8 *data, 
}





static int sha1_update(struct shash_desc *desc, const u8 *data,

int sha1_update_arm(struct shash_desc *desc, const u8 *data,

		    unsigned int len)

{

	struct sha1_state *sctx = shash_desc_ctx(desc);
@@ -81,6 +82,7 @@ static int sha1_update(struct shash_desc *desc, const u8 *data, 
	res = __sha1_update(sctx, data, len, partial);

	return res;

}

EXPORT_SYMBOL_GPL(sha1_update_arm);





/* Add padding and return the message digest. */
@@ -135,7 +137,7 @@ static int sha1_import(struct shash_desc *desc, const void *in) 
static struct shash_alg alg = {

	.digestsize	=	SHA1_DIGEST_SIZE,

	.init		=	sha1_init,

	.update		=	sha1_update,

	.update		=	sha1_update_arm,

	.final		=	sha1_final,

	.export		=	sha1_export,

	.import		=	sha1_import,

arch/arm/crypto/sha1_neon_glue.c

0 → 100644
+197 −0

File added.

Preview size limit exceeded, changes collapsed.

arch/arm/include/asm/crypto/sha1.h

0 → 100644
+10 −0
Original line number Diff line number Diff line 
#ifndef ASM_ARM_CRYPTO_SHA1_H

#define ASM_ARM_CRYPTO_SHA1_H



#include <linux/crypto.h>

#include <crypto/sha.h>



extern int sha1_update_arm(struct shash_desc *desc, const u8 *data,

			   unsigned int len);



#endif