Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 349 insertions, 0 deletions

diff --git a/arch/x86/crypto/sha512_ssse3_glue.c b/arch/x86/crypto/sha512_ssse3_glue.c
new file mode 100644
index 000000000..f1b811b60
--- /dev/null
+++ b/arch/x86/crypto/sha512_ssse3_glue.c
@@ -0,0 +1,349 @@
+/*
+ * 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_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_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_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_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_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_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");