[deliverable/linux.git] / arch / x86 / crypto / sha512_ssse3_glue.c

/*
 * Cryptographic API.
 *
 * Glue code for the SHA512 Secure Hash Algorithm assembler
 * implementation using supplemental SSE3 / AVX / AVX2 instructions.
 *
 * This file is based on sha512_generic.c
 *
 * Copyright (C) 2013 Intel Corporation
 * Author: Tim Chen <tim.c.chen@linux.intel.com>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option)
 * any later version.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 */

#define pr_fmt(fmt)	KBUILD_MODNAME ": " fmt

#include <crypto/internal/hash.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/sha512_base.h>
#include <asm/fpu/api.h>

#include <linux/string.h>

asmlinkage void sha512_transform_ssse3(u64 *digest, const char *data,
				       u64 rounds);

typedef void (sha512_transform_fn)(u64 *digest, const char *data, u64 rounds);

static int sha512_update(struct shash_desc *desc, const u8 *data,
		       unsigned int len, sha512_transform_fn *sha512_xform)
{
	struct sha512_state *sctx = shash_desc_ctx(desc);

	if (!irq_fpu_usable() ||
	    (sctx->count[0] % SHA512_BLOCK_SIZE) + len < SHA512_BLOCK_SIZE)
		return crypto_sha512_update(desc, data, len);

	/* make sure casting to sha512_block_fn() is safe */
	BUILD_BUG_ON(offsetof(struct sha512_state, state) != 0);

	kernel_fpu_begin();
	sha512_base_do_update(desc, data, len,
			      (sha512_block_fn *)sha512_xform);
	kernel_fpu_end();

	return 0;
}

static int sha512_finup(struct shash_desc *desc, const u8 *data,
	      unsigned int len, u8 *out, sha512_transform_fn *sha512_xform)
{
	if (!irq_fpu_usable())
		return crypto_sha512_finup(desc, data, len, out);

	kernel_fpu_begin();
	if (len)
		sha512_base_do_update(desc, data, len,
				      (sha512_block_fn *)sha512_xform);
	sha512_base_do_finalize(desc, (sha512_block_fn *)sha512_xform);
	kernel_fpu_end();

	return sha512_base_finish(desc, out);
}

static int sha512_ssse3_update(struct shash_desc *desc, const u8 *data,
		       unsigned int len)
{
	return sha512_update(desc, data, len, sha512_transform_ssse3);
}

static int sha512_ssse3_finup(struct shash_desc *desc, const u8 *data,
	      unsigned int len, u8 *out)
{
	return sha512_finup(desc, data, len, out, sha512_transform_ssse3);
}

/* Add padding and return the message digest. */
static int sha512_ssse3_final(struct shash_desc *desc, u8 *out)
{
	return sha512_ssse3_finup(desc, NULL, 0, out);
}

static struct shash_alg sha512_ssse3_algs[] = { {
	.digestsize	=	SHA512_DIGEST_SIZE,
	.init		=	sha512_base_init,
	.update		=	sha512_ssse3_update,
	.final		=	sha512_ssse3_final,
	.finup		=	sha512_ssse3_finup,
	.descsize	=	sizeof(struct sha512_state),
	.base		=	{
		.cra_name	=	"sha512",
		.cra_driver_name =	"sha512-ssse3",
		.cra_priority	=	150,
		.cra_flags	=	CRYPTO_ALG_TYPE_SHASH,
		.cra_blocksize	=	SHA512_BLOCK_SIZE,
		.cra_module	=	THIS_MODULE,
	}
},  {
	.digestsize	=	SHA384_DIGEST_SIZE,
	.init		=	sha384_base_init,
	.update		=	sha512_ssse3_update,
	.final		=	sha512_ssse3_final,
	.finup		=	sha512_ssse3_finup,
	.descsize	=	sizeof(struct sha512_state),
	.base		=	{
		.cra_name	=	"sha384",
		.cra_driver_name =	"sha384-ssse3",
		.cra_priority	=	150,
		.cra_flags	=	CRYPTO_ALG_TYPE_SHASH,
		.cra_blocksize	=	SHA384_BLOCK_SIZE,
		.cra_module	=	THIS_MODULE,
	}
} };

static int register_sha512_ssse3(void)
{
	if (boot_cpu_has(X86_FEATURE_SSSE3))
		return crypto_register_shashes(sha512_ssse3_algs,
			ARRAY_SIZE(sha512_ssse3_algs));
	return 0;
}

static void unregister_sha512_ssse3(void)
{
	if (boot_cpu_has(X86_FEATURE_SSSE3))
		crypto_unregister_shashes(sha512_ssse3_algs,
			ARRAY_SIZE(sha512_ssse3_algs));
}

#ifdef CONFIG_AS_AVX
asmlinkage void sha512_transform_avx(u64 *digest, const char *data,
				     u64 rounds);
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 sha512_avx_update(struct shash_desc *desc, const u8 *data,
		       unsigned int len)
{
	return sha512_update(desc, data, len, sha512_transform_avx);
}

static int sha512_avx_finup(struct shash_desc *desc, const u8 *data,
	      unsigned int len, u8 *out)
{
	return sha512_finup(desc, data, len, out, sha512_transform_avx);
}

/* Add padding and return the message digest. */
static int sha512_avx_final(struct shash_desc *desc, u8 *out)
{
	return sha512_avx_finup(desc, NULL, 0, out);
}

static struct shash_alg sha512_avx_algs[] = { {
	.digestsize	=	SHA512_DIGEST_SIZE,
	.init		=	sha512_base_init,
	.update		=	sha512_avx_update,
	.final		=	sha512_avx_final,
	.finup		=	sha512_avx_finup,
	.descsize	=	sizeof(struct sha512_state),
	.base		=	{
		.cra_name	=	"sha512",
		.cra_driver_name =	"sha512-avx",
		.cra_priority	=	160,
		.cra_flags	=	CRYPTO_ALG_TYPE_SHASH,
		.cra_blocksize	=	SHA512_BLOCK_SIZE,
		.cra_module	=	THIS_MODULE,
	}
},  {
	.digestsize	=	SHA384_DIGEST_SIZE,
	.init		=	sha384_base_init,
	.update		=	sha512_avx_update,
	.final		=	sha512_avx_final,
	.finup		=	sha512_avx_finup,
	.descsize	=	sizeof(struct sha512_state),
	.base		=	{
		.cra_name	=	"sha384",
		.cra_driver_name =	"sha384-avx",
		.cra_priority	=	160,
		.cra_flags	=	CRYPTO_ALG_TYPE_SHASH,
		.cra_blocksize	=	SHA384_BLOCK_SIZE,
		.cra_module	=	THIS_MODULE,
	}
} };

static int register_sha512_avx(void)
{
	if (avx_usable())
		return crypto_register_shashes(sha512_avx_algs,
			ARRAY_SIZE(sha512_avx_algs));
	return 0;
}

static void unregister_sha512_avx(void)
{
	if (avx_usable())
		crypto_unregister_shashes(sha512_avx_algs,
			ARRAY_SIZE(sha512_avx_algs));
}
#else
static inline int register_sha512_avx(void) { return 0; }
static inline void unregister_sha512_avx(void) { }
#endif

#if defined(CONFIG_AS_AVX2) && defined(CONFIG_AS_AVX)
asmlinkage void sha512_transform_rorx(u64 *digest, const char *data,
				      u64 rounds);

static int sha512_avx2_update(struct shash_desc *desc, const u8 *data,
		       unsigned int len)
{
	return sha512_update(desc, data, len, sha512_transform_rorx);
}

static int sha512_avx2_finup(struct shash_desc *desc, const u8 *data,
	      unsigned int len, u8 *out)
{
	return sha512_finup(desc, data, len, out, sha512_transform_rorx);
}

/* Add padding and return the message digest. */
static int sha512_avx2_final(struct shash_desc *desc, u8 *out)
{
	return sha512_avx2_finup(desc, NULL, 0, out);
}

static struct shash_alg sha512_avx2_algs[] = { {
	.digestsize	=	SHA512_DIGEST_SIZE,
	.init		=	sha512_base_init,
	.update		=	sha512_avx2_update,
	.final		=	sha512_avx2_final,
	.finup		=	sha512_avx2_finup,
	.descsize	=	sizeof(struct sha512_state),
	.base		=	{
		.cra_name	=	"sha512",
		.cra_driver_name =	"sha512-avx2",
		.cra_priority	=	170,
		.cra_flags	=	CRYPTO_ALG_TYPE_SHASH,
		.cra_blocksize	=	SHA512_BLOCK_SIZE,
		.cra_module	=	THIS_MODULE,
	}
},  {
	.digestsize	=	SHA384_DIGEST_SIZE,
	.init		=	sha384_base_init,
	.update		=	sha512_avx2_update,
	.final		=	sha512_avx2_final,
	.finup		=	sha512_avx2_finup,
	.descsize	=	sizeof(struct sha512_state),
	.base		=	{
		.cra_name	=	"sha384",
		.cra_driver_name =	"sha384-avx2",
		.cra_priority	=	170,
		.cra_flags	=	CRYPTO_ALG_TYPE_SHASH,
		.cra_blocksize	=	SHA384_BLOCK_SIZE,
		.cra_module	=	THIS_MODULE,
	}
} };

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

	return false;
}

static int register_sha512_avx2(void)
{
	if (avx2_usable())
		return crypto_register_shashes(sha512_avx2_algs,
			ARRAY_SIZE(sha512_avx2_algs));
	return 0;
}

static void unregister_sha512_avx2(void)
{
	if (avx2_usable())
		crypto_unregister_shashes(sha512_avx2_algs,
			ARRAY_SIZE(sha512_avx2_algs));
}
#else
static inline int register_sha512_avx2(void) { return 0; }
static inline void unregister_sha512_avx2(void) { }
#endif

static int __init sha512_ssse3_mod_init(void)
{

	if (register_sha512_ssse3())
		goto fail;

	if (register_sha512_avx()) {
		unregister_sha512_ssse3();
		goto fail;
	}

	if (register_sha512_avx2()) {
		unregister_sha512_avx();
		unregister_sha512_ssse3();
		goto fail;
	}

	return 0;
fail:
	return -ENODEV;
}

static void __exit sha512_ssse3_mod_fini(void)
{
	unregister_sha512_avx2();
	unregister_sha512_avx();
	unregister_sha512_ssse3();
}

module_init(sha512_ssse3_mod_init);
module_exit(sha512_ssse3_mod_fini);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("SHA512 Secure Hash Algorithm, Supplemental SSE3 accelerated");

MODULE_ALIAS_CRYPTO("sha512");
MODULE_ALIAS_CRYPTO("sha512-ssse3");
MODULE_ALIAS_CRYPTO("sha512-avx");
MODULE_ALIAS_CRYPTO("sha512-avx2");
MODULE_ALIAS_CRYPTO("sha384");
MODULE_ALIAS_CRYPTO("sha384-ssse3");
MODULE_ALIAS_CRYPTO("sha384-avx");
MODULE_ALIAS_CRYPTO("sha384-avx2");
Commit	Line	Data
87de4579 TC	1	/*
	2	* Cryptographic API.
	3	*
	4	* Glue code for the SHA512 Secure Hash Algorithm assembler
	5	* implementation using supplemental SSE3 / AVX / AVX2 instructions.
	6	*
	7	* This file is based on sha512_generic.c
	8	*
	9	* Copyright (C) 2013 Intel Corporation
	10	* Author: Tim Chen <tim.c.chen@linux.intel.com>
	11	*
	12	* This program is free software; you can redistribute it and/or modify it
	13	* under the terms of the GNU General Public License as published by the Free
	14	* Software Foundation; either version 2 of the License, or (at your option)
	15	* any later version.
	16	*
	17	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	18	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	19	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	20	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	21	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	22	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	23	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	24	* SOFTWARE.
	25	*
	26	*/
	27
	28	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
	29
	30	#include <crypto/internal/hash.h>
	31	#include <linux/init.h>
	32	#include <linux/module.h>
	33	#include <linux/mm.h>
	34	#include <linux/cryptohash.h>
	35	#include <linux/types.h>
	36	#include <crypto/sha.h>
e68410eb	37	#include <crypto/sha512_base.h>
df6b35f4	38	#include <asm/fpu/api.h>
87de4579 TC	39
	40	#include <linux/string.h>
	41
e68410eb AB	42	asmlinkage void sha512_transform_ssse3(u64 digest, const char data,
e68410eb AB	43	u64 rounds);
87de4579	44
be6ec98d	45	typedef void (sha512_transform_fn)(u64 digest, const char data, u64 rounds);
87de4579	46
be6ec98d	47	static int sha512_update(struct shash_desc desc, const u8 data,
be6ec98d	48	unsigned int len, sha512_transform_fn *sha512_xform)
87de4579 TC	49	{
87de4579 TC	50	struct sha512_state *sctx = shash_desc_ctx(desc);
87de4579	51
e68410eb AB	52	if (!irq_fpu_usable() \|\|
	53	(sctx->count[0] % SHA512_BLOCK_SIZE) + len < SHA512_BLOCK_SIZE)
	54	return crypto_sha512_update(desc, data, len);
87de4579	55
e68410eb AB	56	/* make sure casting to sha512_block_fn() is safe */
e68410eb AB	57	BUILD_BUG_ON(offsetof(struct sha512_state, state) != 0);
87de4579	58
e68410eb AB	59	kernel_fpu_begin();
e68410eb AB	60	sha512_base_do_update(desc, data, len,
be6ec98d	61	(sha512_block_fn *)sha512_xform);
e68410eb	62	kernel_fpu_end();
87de4579 TC	63
	64	return 0;
	65	}
	66
be6ec98d	67	static int sha512_finup(struct shash_desc desc, const u8 data,
be6ec98d	68	unsigned int len, u8 out, sha512_transform_fn sha512_xform)
87de4579	69	{
e68410eb AB	70	if (!irq_fpu_usable())
e68410eb AB	71	return crypto_sha512_finup(desc, data, len, out);
87de4579	72
e68410eb AB	73	kernel_fpu_begin();
	74	if (len)
	75	sha512_base_do_update(desc, data, len,
be6ec98d	76	(sha512_block_fn *)sha512_xform);
be6ec98d	77	sha512_base_do_finalize(desc, (sha512_block_fn *)sha512_xform);
e68410eb	78	kernel_fpu_end();
87de4579	79
e68410eb	80	return sha512_base_finish(desc, out);
87de4579 TC	81	}
87de4579 TC	82
be6ec98d	83	static int sha512_ssse3_update(struct shash_desc desc, const u8 data,
	84	unsigned int len)
	85	{
	86	return sha512_update(desc, data, len, sha512_transform_ssse3);
	87	}
	88
	89	static int sha512_ssse3_finup(struct shash_desc desc, const u8 data,
	90	unsigned int len, u8 *out)
	91	{
	92	return sha512_finup(desc, data, len, out, sha512_transform_ssse3);
	93	}
	94
87de4579 TC	95	/* Add padding and return the message digest. */
	96	static int sha512_ssse3_final(struct shash_desc desc, u8 out)
	97	{
e68410eb	98	return sha512_ssse3_finup(desc, NULL, 0, out);
340991e3 JK	99	}
340991e3 JK	100
be6ec98d	101	static struct shash_alg sha512_ssse3_algs[] = { {
87de4579	102	.digestsize = SHA512_DIGEST_SIZE,
e68410eb	103	.init = sha512_base_init,
87de4579 TC	104	.update = sha512_ssse3_update,
87de4579 TC	105	.final = sha512_ssse3_final,
e68410eb	106	.finup = sha512_ssse3_finup,
87de4579	107	.descsize = sizeof(struct sha512_state),
87de4579 TC	108	.base = {
	109	.cra_name = "sha512",
	110	.cra_driver_name = "sha512-ssse3",
	111	.cra_priority = 150,
	112	.cra_flags = CRYPTO_ALG_TYPE_SHASH,
	113	.cra_blocksize = SHA512_BLOCK_SIZE,
	114	.cra_module = THIS_MODULE,
	115	}
340991e3 JK	116	}, {
340991e3 JK	117	.digestsize = SHA384_DIGEST_SIZE,
e68410eb	118	.init = sha384_base_init,
340991e3	119	.update = sha512_ssse3_update,
e68410eb AB	120	.final = sha512_ssse3_final,
e68410eb AB	121	.finup = sha512_ssse3_finup,
340991e3	122	.descsize = sizeof(struct sha512_state),
340991e3 JK	123	.base = {
	124	.cra_name = "sha384",
	125	.cra_driver_name = "sha384-ssse3",
	126	.cra_priority = 150,
	127	.cra_flags = CRYPTO_ALG_TYPE_SHASH,
	128	.cra_blocksize = SHA384_BLOCK_SIZE,
	129	.cra_module = THIS_MODULE,
	130	}
	131	} };
87de4579	132
be6ec98d	133	static int register_sha512_ssse3(void)
	134	{
	135	if (boot_cpu_has(X86_FEATURE_SSSE3))
	136	return crypto_register_shashes(sha512_ssse3_algs,
	137	ARRAY_SIZE(sha512_ssse3_algs));
	138	return 0;
	139	}
	140
	141	static void unregister_sha512_ssse3(void)
	142	{
	143	if (boot_cpu_has(X86_FEATURE_SSSE3))
	144	crypto_unregister_shashes(sha512_ssse3_algs,
	145	ARRAY_SIZE(sha512_ssse3_algs));
	146	}
	147
87de4579	148	#ifdef CONFIG_AS_AVX
be6ec98d	149	asmlinkage void sha512_transform_avx(u64 digest, const char data,
	150	u64 rounds);
	151	static bool avx_usable(void)
87de4579	152	{
d91cab78	153	if (!cpu_has_xfeatures(XFEATURE_MASK_SSE \| XFEATURE_MASK_YMM, NULL)) {
da154e82	154	if (boot_cpu_has(X86_FEATURE_AVX))
c93b8a39	155	pr_info("AVX detected but unusable.\n");
87de4579 TC	156	return false;
	157	}
	158
	159	return true;
	160	}
87de4579	161
be6ec98d	162	static int sha512_avx_update(struct shash_desc desc, const u8 data,
be6ec98d	163	unsigned int len)
87de4579	164	{
be6ec98d	165	return sha512_update(desc, data, len, sha512_transform_avx);
be6ec98d	166	}
87de4579	167
be6ec98d	168	static int sha512_avx_finup(struct shash_desc desc, const u8 data,
	169	unsigned int len, u8 *out)
	170	{
	171	return sha512_finup(desc, data, len, out, sha512_transform_avx);
	172	}
	173
	174	/* Add padding and return the message digest. */
	175	static int sha512_avx_final(struct shash_desc desc, u8 out)
	176	{
	177	return sha512_avx_finup(desc, NULL, 0, out);
	178	}
	179
	180	static struct shash_alg sha512_avx_algs[] = { {
	181	.digestsize = SHA512_DIGEST_SIZE,
	182	.init = sha512_base_init,
	183	.update = sha512_avx_update,
	184	.final = sha512_avx_final,
	185	.finup = sha512_avx_finup,
	186	.descsize = sizeof(struct sha512_state),
	187	.base = {
	188	.cra_name = "sha512",
	189	.cra_driver_name = "sha512-avx",
	190	.cra_priority = 160,
	191	.cra_flags = CRYPTO_ALG_TYPE_SHASH,
	192	.cra_blocksize = SHA512_BLOCK_SIZE,
	193	.cra_module = THIS_MODULE,
87de4579	194	}
be6ec98d	195	}, {
	196	.digestsize = SHA384_DIGEST_SIZE,
	197	.init = sha384_base_init,
	198	.update = sha512_avx_update,
	199	.final = sha512_avx_final,
	200	.finup = sha512_avx_finup,
	201	.descsize = sizeof(struct sha512_state),
	202	.base = {
	203	.cra_name = "sha384",
	204	.cra_driver_name = "sha384-avx",
	205	.cra_priority = 160,
	206	.cra_flags = CRYPTO_ALG_TYPE_SHASH,
	207	.cra_blocksize = SHA384_BLOCK_SIZE,
	208	.cra_module = THIS_MODULE,
	209	}
	210	} };
87de4579	211
be6ec98d	212	static int register_sha512_avx(void)
	213	{
	214	if (avx_usable())
	215	return crypto_register_shashes(sha512_avx_algs,
	216	ARRAY_SIZE(sha512_avx_algs));
	217	return 0;
	218	}
	219
	220	static void unregister_sha512_avx(void)
	221	{
	222	if (avx_usable())
	223	crypto_unregister_shashes(sha512_avx_algs,
	224	ARRAY_SIZE(sha512_avx_algs));
	225	}
	226	#else
	227	static inline int register_sha512_avx(void) { return 0; }
	228	static inline void unregister_sha512_avx(void) { }
87de4579	229	#endif
be6ec98d	230
	231	#if defined(CONFIG_AS_AVX2) && defined(CONFIG_AS_AVX)
	232	asmlinkage void sha512_transform_rorx(u64 digest, const char data,
	233	u64 rounds);
	234
	235	static int sha512_avx2_update(struct shash_desc desc, const u8 data,
	236	unsigned int len)
	237	{
	238	return sha512_update(desc, data, len, sha512_transform_rorx);
	239	}
	240
	241	static int sha512_avx2_finup(struct shash_desc desc, const u8 data,
	242	unsigned int len, u8 *out)
	243	{
	244	return sha512_finup(desc, data, len, out, sha512_transform_rorx);
	245	}
	246
	247	/* Add padding and return the message digest. */
	248	static int sha512_avx2_final(struct shash_desc desc, u8 out)
	249	{
	250	return sha512_avx2_finup(desc, NULL, 0, out);
	251	}
	252
	253	static struct shash_alg sha512_avx2_algs[] = { {
	254	.digestsize = SHA512_DIGEST_SIZE,
	255	.init = sha512_base_init,
	256	.update = sha512_avx2_update,
	257	.final = sha512_avx2_final,
	258	.finup = sha512_avx2_finup,
	259	.descsize = sizeof(struct sha512_state),
	260	.base = {
	261	.cra_name = "sha512",
	262	.cra_driver_name = "sha512-avx2",
	263	.cra_priority = 170,
	264	.cra_flags = CRYPTO_ALG_TYPE_SHASH,
	265	.cra_blocksize = SHA512_BLOCK_SIZE,
	266	.cra_module = THIS_MODULE,
	267	}
	268	}, {
	269	.digestsize = SHA384_DIGEST_SIZE,
	270	.init = sha384_base_init,
	271	.update = sha512_avx2_update,
	272	.final = sha512_avx2_final,
	273	.finup = sha512_avx2_finup,
	274	.descsize = sizeof(struct sha512_state),
	275	.base = {
	276	.cra_name = "sha384",
	277	.cra_driver_name = "sha384-avx2",
	278	.cra_priority = 170,
	279	.cra_flags = CRYPTO_ALG_TYPE_SHASH,
	280	.cra_blocksize = SHA384_BLOCK_SIZE,
	281	.cra_module = THIS_MODULE,
	282	}
	283	} };
	284
	285	static bool avx2_usable(void)
	286	{
	287	if (avx_usable() && boot_cpu_has(X86_FEATURE_AVX2) &&
	288	boot_cpu_has(X86_FEATURE_BMI2))
	289	return true;
	290
	291	return false;
	292	}
	293
294	static int register_sha512_avx2(void)
295	{
296	if (avx2_usable())
297	return crypto_register_shashes(sha512_avx2_algs,
298	ARRAY_SIZE(sha512_avx2_algs));
299	return 0;
300	}
301
302	static void unregister_sha512_avx2(void)
303	{
304	if (avx2_usable())
305	crypto_unregister_shashes(sha512_avx2_algs,
306	ARRAY_SIZE(sha512_avx2_algs));
307	}
308	#else
309	static inline int register_sha512_avx2(void) { return 0; }
310	static inline void unregister_sha512_avx2(void) { }
87de4579	311	#endif
be6ec98d	312
	313	static int __init sha512_ssse3_mod_init(void)
	314	{
	315
	316	if (register_sha512_ssse3())
	317	goto fail;
	318
	319	if (register_sha512_avx()) {
	320	unregister_sha512_ssse3();
	321	goto fail;
87de4579	322	}
87de4579	323
be6ec98d	324	if (register_sha512_avx2()) {
	325	unregister_sha512_avx();
	326	unregister_sha512_ssse3();
	327	goto fail;
	328	}
	329
	330	return 0;
	331	fail:
87de4579 TC	332	return -ENODEV;
	333	}
	334
	335	static void __exit sha512_ssse3_mod_fini(void)
	336	{
be6ec98d	337	unregister_sha512_avx2();
	338	unregister_sha512_avx();
	339	unregister_sha512_ssse3();
87de4579 TC	340	}
	341
	342	module_init(sha512_ssse3_mod_init);
	343	module_exit(sha512_ssse3_mod_fini);
	344
	345	MODULE_LICENSE("GPL");
	346	MODULE_DESCRIPTION("SHA512 Secure Hash Algorithm, Supplemental SSE3 accelerated");
	347
5d26a105	348	MODULE_ALIAS_CRYPTO("sha512");
1a445e8e SM	349	MODULE_ALIAS_CRYPTO("sha512-ssse3");
	350	MODULE_ALIAS_CRYPTO("sha512-avx");
	351	MODULE_ALIAS_CRYPTO("sha512-avx2");
5d26a105	352	MODULE_ALIAS_CRYPTO("sha384");
1a445e8e SM	353	MODULE_ALIAS_CRYPTO("sha384-ssse3");
	354	MODULE_ALIAS_CRYPTO("sha384-avx");
	355	MODULE_ALIAS_CRYPTO("sha384-avx2");