[linux-block.git] / arch / x86 / crypto / sha1_ssse3_glue.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Cryptographic API.
 *
 * Glue code for the SHA1 Secure Hash Algorithm assembler implementation using
 * Supplemental SSE3 instructions.
 *
 * This file is based on sha1_generic.c
 *
 * Copyright (c) Alan Smithee.
 * Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk>
 * Copyright (c) Jean-Francois Dive <jef@linuxbe.org>
 * Copyright (c) Mathias Krause <minipli@googlemail.com>
 * Copyright (c) Chandramouli Narayanan <mouli@linux.intel.com>
 */

#define pr_fmt(fmt)	KBUILD_MODNAME ": " fmt

#include <crypto/internal/hash.h>
#include <crypto/internal/simd.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/mm.h>
#include <linux/cryptohash.h>
#include <linux/types.h>
#include <crypto/sha.h>
#include <crypto/sha1_base.h>
#include <asm/simd.h>

typedef void (sha1_transform_fn)(u32 *digest, const char *data,
				unsigned int rounds);

static int sha1_update(struct shash_desc *desc, const u8 *data,
			     unsigned int len, sha1_transform_fn *sha1_xform)
{
	struct sha1_state *sctx = shash_desc_ctx(desc);

	if (!crypto_simd_usable() ||
	    (sctx->count % SHA1_BLOCK_SIZE) + len < SHA1_BLOCK_SIZE)
		return crypto_sha1_update(desc, data, len);

	/* make sure casting to sha1_block_fn() is safe */
	BUILD_BUG_ON(offsetof(struct sha1_state, state) != 0);

	kernel_fpu_begin();
	sha1_base_do_update(desc, data, len,
			    (sha1_block_fn *)sha1_xform);
	kernel_fpu_end();

	return 0;
}

static int sha1_finup(struct shash_desc *desc, const u8 *data,
		      unsigned int len, u8 *out, sha1_transform_fn *sha1_xform)
{
	if (!crypto_simd_usable())
		return crypto_sha1_finup(desc, data, len, out);

	kernel_fpu_begin();
	if (len)
		sha1_base_do_update(desc, data, len,
				    (sha1_block_fn *)sha1_xform);
	sha1_base_do_finalize(desc, (sha1_block_fn *)sha1_xform);
	kernel_fpu_end();

	return sha1_base_finish(desc, out);
}

asmlinkage void sha1_transform_ssse3(u32 *digest, const char *data,
				     unsigned int rounds);

static int sha1_ssse3_update(struct shash_desc *desc, const u8 *data,
			     unsigned int len)
{
	return sha1_update(desc, data, len,
			(sha1_transform_fn *) sha1_transform_ssse3);
}

static int sha1_ssse3_finup(struct shash_desc *desc, const u8 *data,
			      unsigned int len, u8 *out)
{
	return sha1_finup(desc, data, len, out,
			(sha1_transform_fn *) sha1_transform_ssse3);
}

/* Add padding and return the message digest. */
static int sha1_ssse3_final(struct shash_desc *desc, u8 *out)
{
	return sha1_ssse3_finup(desc, NULL, 0, out);
}

static struct shash_alg sha1_ssse3_alg = {
	.digestsize	=	SHA1_DIGEST_SIZE,
	.init		=	sha1_base_init,
	.update		=	sha1_ssse3_update,
	.final		=	sha1_ssse3_final,
	.finup		=	sha1_ssse3_finup,
	.descsize	=	sizeof(struct sha1_state),
	.base		=	{
		.cra_name	=	"sha1",
		.cra_driver_name =	"sha1-ssse3",
		.cra_priority	=	150,
		.cra_blocksize	=	SHA1_BLOCK_SIZE,
		.cra_module	=	THIS_MODULE,
	}
};

static int register_sha1_ssse3(void)
{
	if (boot_cpu_has(X86_FEATURE_SSSE3))
		return crypto_register_shash(&sha1_ssse3_alg);
	return 0;
}

static void unregister_sha1_ssse3(void)
{
	if (boot_cpu_has(X86_FEATURE_SSSE3))
		crypto_unregister_shash(&sha1_ssse3_alg);
}

#ifdef CONFIG_AS_AVX
asmlinkage void sha1_transform_avx(u32 *digest, const char *data,
				   unsigned int rounds);

static int sha1_avx_update(struct shash_desc *desc, const u8 *data,
			     unsigned int len)
{
	return sha1_update(desc, data, len,
			(sha1_transform_fn *) sha1_transform_avx);
}

static int sha1_avx_finup(struct shash_desc *desc, const u8 *data,
			      unsigned int len, u8 *out)
{
	return sha1_finup(desc, data, len, out,
			(sha1_transform_fn *) sha1_transform_avx);
}

static int sha1_avx_final(struct shash_desc *desc, u8 *out)
{
	return sha1_avx_finup(desc, NULL, 0, out);
}

static struct shash_alg sha1_avx_alg = {
	.digestsize	=	SHA1_DIGEST_SIZE,
	.init		=	sha1_base_init,
	.update		=	sha1_avx_update,
	.final		=	sha1_avx_final,
	.finup		=	sha1_avx_finup,
	.descsize	=	sizeof(struct sha1_state),
	.base		=	{
		.cra_name	=	"sha1",
		.cra_driver_name =	"sha1-avx",
		.cra_priority	=	160,
		.cra_blocksize	=	SHA1_BLOCK_SIZE,
		.cra_module	=	THIS_MODULE,
	}
};

static bool avx_usable(void)
{
	if (!cpu_has_xfeatures(XFEATURE_MASK_SSE | XFEATURE_MASK_YMM, NULL)) {
		if (boot_cpu_has(X86_FEATURE_AVX))
			pr_info("AVX detected but unusable.\n");
		return false;
	}

	return true;
}

static int register_sha1_avx(void)
{
	if (avx_usable())
		return crypto_register_shash(&sha1_avx_alg);
	return 0;
}

static void unregister_sha1_avx(void)
{
	if (avx_usable())
		crypto_unregister_shash(&sha1_avx_alg);
}

#else  /* CONFIG_AS_AVX */
static inline int register_sha1_avx(void) { return 0; }
static inline void unregister_sha1_avx(void) { }
#endif /* CONFIG_AS_AVX */


#if defined(CONFIG_AS_AVX2) && (CONFIG_AS_AVX)
#define SHA1_AVX2_BLOCK_OPTSIZE	4	/* optimal 4*64 bytes of SHA1 blocks */

asmlinkage void sha1_transform_avx2(u32 *digest, const char *data,
				    unsigned int rounds);

static bool avx2_usable(void)
{
	if (avx_usable() && boot_cpu_has(X86_FEATURE_AVX2)
		&& boot_cpu_has(X86_FEATURE_BMI1)
		&& boot_cpu_has(X86_FEATURE_BMI2))
		return true;

	return false;
}

static void sha1_apply_transform_avx2(u32 *digest, const char *data,
				unsigned int rounds)
{
	/* Select the optimal transform based on data block size */
	if (rounds >= SHA1_AVX2_BLOCK_OPTSIZE)
		sha1_transform_avx2(digest, data, rounds);
	else
		sha1_transform_avx(digest, data, rounds);
}

static int sha1_avx2_update(struct shash_desc *desc, const u8 *data,
			     unsigned int len)
{
	return sha1_update(desc, data, len,
		(sha1_transform_fn *) sha1_apply_transform_avx2);
}

static int sha1_avx2_finup(struct shash_desc *desc, const u8 *data,
			      unsigned int len, u8 *out)
{
	return sha1_finup(desc, data, len, out,
		(sha1_transform_fn *) sha1_apply_transform_avx2);
}

static int sha1_avx2_final(struct shash_desc *desc, u8 *out)
{
	return sha1_avx2_finup(desc, NULL, 0, out);
}

static struct shash_alg sha1_avx2_alg = {
	.digestsize	=	SHA1_DIGEST_SIZE,
	.init		=	sha1_base_init,
	.update		=	sha1_avx2_update,
	.final		=	sha1_avx2_final,
	.finup		=	sha1_avx2_finup,
	.descsize	=	sizeof(struct sha1_state),
	.base		=	{
		.cra_name	=	"sha1",
		.cra_driver_name =	"sha1-avx2",
		.cra_priority	=	170,
		.cra_blocksize	=	SHA1_BLOCK_SIZE,
		.cra_module	=	THIS_MODULE,
	}
};

static int register_sha1_avx2(void)
{
	if (avx2_usable())
		return crypto_register_shash(&sha1_avx2_alg);
	return 0;
}

static void unregister_sha1_avx2(void)
{
	if (avx2_usable())
		crypto_unregister_shash(&sha1_avx2_alg);
}

#else
static inline int register_sha1_avx2(void) { return 0; }
static inline void unregister_sha1_avx2(void) { }
#endif

#ifdef CONFIG_AS_SHA1_NI
asmlinkage void sha1_ni_transform(u32 *digest, const char *data,
				   unsigned int rounds);

static int sha1_ni_update(struct shash_desc *desc, const u8 *data,
			     unsigned int len)
{
	return sha1_update(desc, data, len,
		(sha1_transform_fn *) sha1_ni_transform);
}

static int sha1_ni_finup(struct shash_desc *desc, const u8 *data,
			      unsigned int len, u8 *out)
{
	return sha1_finup(desc, data, len, out,
		(sha1_transform_fn *) sha1_ni_transform);
}

static int sha1_ni_final(struct shash_desc *desc, u8 *out)
{
	return sha1_ni_finup(desc, NULL, 0, out);
}

static struct shash_alg sha1_ni_alg = {
	.digestsize	=	SHA1_DIGEST_SIZE,
	.init		=	sha1_base_init,
	.update		=	sha1_ni_update,
	.final		=	sha1_ni_final,
	.finup		=	sha1_ni_finup,
	.descsize	=	sizeof(struct sha1_state),
	.base		=	{
		.cra_name	=	"sha1",
		.cra_driver_name =	"sha1-ni",
		.cra_priority	=	250,
		.cra_blocksize	=	SHA1_BLOCK_SIZE,
		.cra_module	=	THIS_MODULE,
	}
};

static int register_sha1_ni(void)
{
	if (boot_cpu_has(X86_FEATURE_SHA_NI))
		return crypto_register_shash(&sha1_ni_alg);
	return 0;
}

static void unregister_sha1_ni(void)
{
	if (boot_cpu_has(X86_FEATURE_SHA_NI))
		crypto_unregister_shash(&sha1_ni_alg);
}

#else
static inline int register_sha1_ni(void) { return 0; }
static inline void unregister_sha1_ni(void) { }
#endif

static int __init sha1_ssse3_mod_init(void)
{
	if (register_sha1_ssse3())
		goto fail;

	if (register_sha1_avx()) {
		unregister_sha1_ssse3();
		goto fail;
	}

	if (register_sha1_avx2()) {
		unregister_sha1_avx();
		unregister_sha1_ssse3();
		goto fail;
	}

	if (register_sha1_ni()) {
		unregister_sha1_avx2();
		unregister_sha1_avx();
		unregister_sha1_ssse3();
		goto fail;
	}

	return 0;
fail:
	return -ENODEV;
}

static void __exit sha1_ssse3_mod_fini(void)
{
	unregister_sha1_ni();
	unregister_sha1_avx2();
	unregister_sha1_avx();
	unregister_sha1_ssse3();
}

module_init(sha1_ssse3_mod_init);
module_exit(sha1_ssse3_mod_fini);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("SHA1 Secure Hash Algorithm, Supplemental SSE3 accelerated");

MODULE_ALIAS_CRYPTO("sha1");
MODULE_ALIAS_CRYPTO("sha1-ssse3");
MODULE_ALIAS_CRYPTO("sha1-avx");
MODULE_ALIAS_CRYPTO("sha1-avx2");
#ifdef CONFIG_AS_SHA1_NI
MODULE_ALIAS_CRYPTO("sha1-ni");
#endif
Commit	Line	Data
2874c5fd	1	// SPDX-License-Identifier: GPL-2.0-or-later
66be8951 MK	2	/*
	3	* Cryptographic API.
	4	*
	5	* Glue code for the SHA1 Secure Hash Algorithm assembler implementation using
	6	* Supplemental SSE3 instructions.
	7	*
	8	* This file is based on sha1_generic.c
	9	*
	10	* Copyright (c) Alan Smithee.
	11	* Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk>
	12	* Copyright (c) Jean-Francois Dive <jef@linuxbe.org>
	13	* Copyright (c) Mathias Krause <minipli@googlemail.com>
7c1da8d0	14	* Copyright (c) Chandramouli Narayanan <mouli@linux.intel.com>
66be8951 MK	15	*/
	16
	17	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
	18
	19	#include <crypto/internal/hash.h>
f2abe0d7	20	#include <crypto/internal/simd.h>
66be8951 MK	21	#include <linux/init.h>
	22	#include <linux/module.h>
	23	#include <linux/mm.h>
	24	#include <linux/cryptohash.h>
	25	#include <linux/types.h>
	26	#include <crypto/sha.h>
824b4376	27	#include <crypto/sha1_base.h>
f2abe0d7	28	#include <asm/simd.h>
66be8951	29
85c66ecd	30	typedef void (sha1_transform_fn)(u32 digest, const char data,
85c66ecd	31	unsigned int rounds);
66be8951	32
85c66ecd	33	static int sha1_update(struct shash_desc desc, const u8 data,
85c66ecd	34	unsigned int len, sha1_transform_fn *sha1_xform)
66be8951 MK	35	{
66be8951 MK	36	struct sha1_state *sctx = shash_desc_ctx(desc);
66be8951	37
f2abe0d7	38	if (!crypto_simd_usable() \|\|
824b4376 AB	39	(sctx->count % SHA1_BLOCK_SIZE) + len < SHA1_BLOCK_SIZE)
824b4376 AB	40	return crypto_sha1_update(desc, data, len);
66be8951	41
824b4376 AB	42	/* make sure casting to sha1_block_fn() is safe */
824b4376 AB	43	BUILD_BUG_ON(offsetof(struct sha1_state, state) != 0);
66be8951	44
824b4376 AB	45	kernel_fpu_begin();
824b4376 AB	46	sha1_base_do_update(desc, data, len,
85c66ecd	47	(sha1_block_fn *)sha1_xform);
824b4376	48	kernel_fpu_end();
66be8951 MK	49
	50	return 0;
	51	}
	52
85c66ecd	53	static int sha1_finup(struct shash_desc desc, const u8 data,
85c66ecd	54	unsigned int len, u8 out, sha1_transform_fn sha1_xform)
66be8951	55	{
f2abe0d7	56	if (!crypto_simd_usable())
824b4376	57	return crypto_sha1_finup(desc, data, len, out);
66be8951	58
824b4376 AB	59	kernel_fpu_begin();
	60	if (len)
	61	sha1_base_do_update(desc, data, len,
85c66ecd	62	(sha1_block_fn *)sha1_xform);
85c66ecd	63	sha1_base_do_finalize(desc, (sha1_block_fn *)sha1_xform);
824b4376	64	kernel_fpu_end();
66be8951	65
824b4376	66	return sha1_base_finish(desc, out);
66be8951 MK	67	}
66be8951 MK	68
85c66ecd	69	asmlinkage void sha1_transform_ssse3(u32 digest, const char data,
	70	unsigned int rounds);
	71
	72	static int sha1_ssse3_update(struct shash_desc desc, const u8 data,
	73	unsigned int len)
66be8951	74	{
85c66ecd	75	return sha1_update(desc, data, len,
85c66ecd	76	(sha1_transform_fn *) sha1_transform_ssse3);
66be8951 MK	77	}
66be8951 MK	78
85c66ecd	79	static int sha1_ssse3_finup(struct shash_desc desc, const u8 data,
85c66ecd	80	unsigned int len, u8 *out)
7c1da8d0	81	{
85c66ecd	82	return sha1_finup(desc, data, len, out,
	83	(sha1_transform_fn *) sha1_transform_ssse3);
	84	}
	85
	86	/* Add padding and return the message digest. */
	87	static int sha1_ssse3_final(struct shash_desc desc, u8 out)
	88	{
	89	return sha1_ssse3_finup(desc, NULL, 0, out);
7c1da8d0	90	}
7c1da8d0	91
85c66ecd	92	static struct shash_alg sha1_ssse3_alg = {
66be8951	93	.digestsize = SHA1_DIGEST_SIZE,
824b4376	94	.init = sha1_base_init,
66be8951 MK	95	.update = sha1_ssse3_update,
66be8951 MK	96	.final = sha1_ssse3_final,
824b4376	97	.finup = sha1_ssse3_finup,
66be8951	98	.descsize = sizeof(struct sha1_state),
66be8951 MK	99	.base = {
66be8951 MK	100	.cra_name = "sha1",
85c66ecd	101	.cra_driver_name = "sha1-ssse3",
66be8951	102	.cra_priority = 150,
66be8951 MK	103	.cra_blocksize = SHA1_BLOCK_SIZE,
	104	.cra_module = THIS_MODULE,
	105	}
	106	};
	107
85c66ecd	108	static int register_sha1_ssse3(void)
	109	{
	110	if (boot_cpu_has(X86_FEATURE_SSSE3))
	111	return crypto_register_shash(&sha1_ssse3_alg);
	112	return 0;
	113	}
	114
	115	static void unregister_sha1_ssse3(void)
	116	{
	117	if (boot_cpu_has(X86_FEATURE_SSSE3))
	118	crypto_unregister_shash(&sha1_ssse3_alg);
	119	}
	120
65df5774	121	#ifdef CONFIG_AS_AVX
85c66ecd	122	asmlinkage void sha1_transform_avx(u32 digest, const char data,
	123	unsigned int rounds);
	124
	125	static int sha1_avx_update(struct shash_desc desc, const u8 data,
	126	unsigned int len)
	127	{
	128	return sha1_update(desc, data, len,
	129	(sha1_transform_fn *) sha1_transform_avx);
	130	}
	131
	132	static int sha1_avx_finup(struct shash_desc desc, const u8 data,
	133	unsigned int len, u8 *out)
	134	{
	135	return sha1_finup(desc, data, len, out,
	136	(sha1_transform_fn *) sha1_transform_avx);
	137	}
	138
	139	static int sha1_avx_final(struct shash_desc desc, u8 out)
	140	{
	141	return sha1_avx_finup(desc, NULL, 0, out);
	142	}
	143
	144	static struct shash_alg sha1_avx_alg = {
	145	.digestsize = SHA1_DIGEST_SIZE,
	146	.init = sha1_base_init,
	147	.update = sha1_avx_update,
	148	.final = sha1_avx_final,
	149	.finup = sha1_avx_finup,
	150	.descsize = sizeof(struct sha1_state),
	151	.base = {
	152	.cra_name = "sha1",
	153	.cra_driver_name = "sha1-avx",
	154	.cra_priority = 160,
85c66ecd	155	.cra_blocksize = SHA1_BLOCK_SIZE,
	156	.cra_module = THIS_MODULE,
	157	}
	158	};
	159
	160	static bool avx_usable(void)
66be8951	161	{
d91cab78	162	if (!cpu_has_xfeatures(XFEATURE_MASK_SSE \| XFEATURE_MASK_YMM, NULL)) {
da154e82	163	if (boot_cpu_has(X86_FEATURE_AVX))
d1e50966	164	pr_info("AVX detected but unusable.\n");
66be8951 MK	165	return false;
	166	}
	167
	168	return true;
	169	}
6ca5afb8	170
85c66ecd	171	static int register_sha1_avx(void)
	172	{
	173	if (avx_usable())
	174	return crypto_register_shash(&sha1_avx_alg);
	175	return 0;
	176	}
	177
	178	static void unregister_sha1_avx(void)
6ca5afb8	179	{
85c66ecd	180	if (avx_usable())
	181	crypto_unregister_shash(&sha1_avx_alg);
	182	}
	183
	184	#else /* CONFIG_AS_AVX */
	185	static inline int register_sha1_avx(void) { return 0; }
	186	static inline void unregister_sha1_avx(void) { }
	187	#endif /* CONFIG_AS_AVX */
	188
	189
	190	#if defined(CONFIG_AS_AVX2) && (CONFIG_AS_AVX)
	191	#define SHA1_AVX2_BLOCK_OPTSIZE 4 /* optimal 464 bytes of SHA1 blocks /
	192
	193	asmlinkage void sha1_transform_avx2(u32 digest, const char data,
	194	unsigned int rounds);
	195
	196	static bool avx2_usable(void)
6ca5afb8	197	{
8861249c	198	if (avx_usable() && boot_cpu_has(X86_FEATURE_AVX2)
85c66ecd	199	&& boot_cpu_has(X86_FEATURE_BMI1)
85c66ecd	200	&& boot_cpu_has(X86_FEATURE_BMI2))
6ca5afb8 MK	201	return true;
	202
	203	return false;
	204	}
66be8951	205
85c66ecd	206	static void sha1_apply_transform_avx2(u32 digest, const char data,
85c66ecd	207	unsigned int rounds)
66be8951	208	{
85c66ecd	209	/* Select the optimal transform based on data block size */
	210	if (rounds >= SHA1_AVX2_BLOCK_OPTSIZE)
	211	sha1_transform_avx2(digest, data, rounds);
	212	else
	213	sha1_transform_avx(digest, data, rounds);
	214	}
6ca5afb8	215
85c66ecd	216	static int sha1_avx2_update(struct shash_desc desc, const u8 data,
	217	unsigned int len)
	218	{
	219	return sha1_update(desc, data, len,
	220	(sha1_transform_fn *) sha1_apply_transform_avx2);
	221	}
66be8951	222
85c66ecd	223	static int sha1_avx2_finup(struct shash_desc desc, const u8 data,
	224	unsigned int len, u8 *out)
	225	{
	226	return sha1_finup(desc, data, len, out,
	227	(sha1_transform_fn *) sha1_apply_transform_avx2);
	228	}
	229
	230	static int sha1_avx2_final(struct shash_desc desc, u8 out)
	231	{
	232	return sha1_avx2_finup(desc, NULL, 0, out);
	233	}
	234
	235	static struct shash_alg sha1_avx2_alg = {
	236	.digestsize = SHA1_DIGEST_SIZE,
	237	.init = sha1_base_init,
	238	.update = sha1_avx2_update,
	239	.final = sha1_avx2_final,
	240	.finup = sha1_avx2_finup,
	241	.descsize = sizeof(struct sha1_state),
	242	.base = {
	243	.cra_name = "sha1",
	244	.cra_driver_name = "sha1-avx2",
	245	.cra_priority = 170,
85c66ecd	246	.cra_blocksize = SHA1_BLOCK_SIZE,
85c66ecd	247	.cra_module = THIS_MODULE,
7c1da8d0	248	}
85c66ecd	249	};
	250
	251	static int register_sha1_avx2(void)
	252	{
	253	if (avx2_usable())
	254	return crypto_register_shash(&sha1_avx2_alg);
	255	return 0;
	256	}
	257
	258	static void unregister_sha1_avx2(void)
	259	{
	260	if (avx2_usable())
	261	crypto_unregister_shash(&sha1_avx2_alg);
	262	}
	263
	264	#else
	265	static inline int register_sha1_avx2(void) { return 0; }
	266	static inline void unregister_sha1_avx2(void) { }
6ca5afb8	267	#endif
85c66ecd	268
95fca7df	269	#ifdef CONFIG_AS_SHA1_NI
85c66ecd	270	asmlinkage void sha1_ni_transform(u32 digest, const char data,
	271	unsigned int rounds);
	272
	273	static int sha1_ni_update(struct shash_desc desc, const u8 data,
	274	unsigned int len)
	275	{
	276	return sha1_update(desc, data, len,
	277	(sha1_transform_fn *) sha1_ni_transform);
	278	}
	279
	280	static int sha1_ni_finup(struct shash_desc desc, const u8 data,
	281	unsigned int len, u8 *out)
	282	{
	283	return sha1_finup(desc, data, len, out,
	284	(sha1_transform_fn *) sha1_ni_transform);
	285	}
	286
	287	static int sha1_ni_final(struct shash_desc desc, u8 out)
	288	{
	289	return sha1_ni_finup(desc, NULL, 0, out);
	290	}
	291
	292	static struct shash_alg sha1_ni_alg = {
	293	.digestsize = SHA1_DIGEST_SIZE,
	294	.init = sha1_base_init,
	295	.update = sha1_ni_update,
	296	.final = sha1_ni_final,
	297	.finup = sha1_ni_finup,
	298	.descsize = sizeof(struct sha1_state),
	299	.base = {
	300	.cra_name = "sha1",
	301	.cra_driver_name = "sha1-ni",
	302	.cra_priority = 250,
85c66ecd	303	.cra_blocksize = SHA1_BLOCK_SIZE,
85c66ecd	304	.cra_module = THIS_MODULE,
95fca7df	305	}
85c66ecd	306	};
	307
	308	static int register_sha1_ni(void)
	309	{
	310	if (boot_cpu_has(X86_FEATURE_SHA_NI))
	311	return crypto_register_shash(&sha1_ni_alg);
	312	return 0;
	313	}
	314
	315	static void unregister_sha1_ni(void)
	316	{
	317	if (boot_cpu_has(X86_FEATURE_SHA_NI))
	318	crypto_unregister_shash(&sha1_ni_alg);
	319	}
	320
	321	#else
	322	static inline int register_sha1_ni(void) { return 0; }
	323	static inline void unregister_sha1_ni(void) { }
66be8951 MK	324	#endif
	325
	326	static int __init sha1_ssse3_mod_init(void)
	327	{
85c66ecd	328	if (register_sha1_ssse3())
85c66ecd	329	goto fail;
6ca5afb8	330
85c66ecd	331	if (register_sha1_avx()) {
	332	unregister_sha1_ssse3();
	333	goto fail;
7c1da8d0	334	}
66be8951	335
85c66ecd	336	if (register_sha1_avx2()) {
	337	unregister_sha1_avx();
	338	unregister_sha1_ssse3();
	339	goto fail;
7c1da8d0	340	}
66be8951	341
85c66ecd	342	if (register_sha1_ni()) {
	343	unregister_sha1_avx2();
	344	unregister_sha1_avx();
	345	unregister_sha1_ssse3();
	346	goto fail;
66be8951	347	}
66be8951	348
85c66ecd	349	return 0;
85c66ecd	350	fail:
66be8951 MK	351	return -ENODEV;
	352	}
	353
	354	static void __exit sha1_ssse3_mod_fini(void)
	355	{
85c66ecd	356	unregister_sha1_ni();
	357	unregister_sha1_avx2();
	358	unregister_sha1_avx();
	359	unregister_sha1_ssse3();
66be8951 MK	360	}
	361
	362	module_init(sha1_ssse3_mod_init);
	363	module_exit(sha1_ssse3_mod_fini);
	364
	365	MODULE_LICENSE("GPL");
	366	MODULE_DESCRIPTION("SHA1 Secure Hash Algorithm, Supplemental SSE3 accelerated");
	367
5d26a105	368	MODULE_ALIAS_CRYPTO("sha1");
1a445e8e SM	369	MODULE_ALIAS_CRYPTO("sha1-ssse3");
	370	MODULE_ALIAS_CRYPTO("sha1-avx");
	371	MODULE_ALIAS_CRYPTO("sha1-avx2");
	372	#ifdef CONFIG_AS_SHA1_NI
	373	MODULE_ALIAS_CRYPTO("sha1-ni");
	374	#endif