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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /arch/arm64/crypto/sha512-ce-glue.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/arm64/crypto/sha512-ce-glue.c')
-rw-r--r--arch/arm64/crypto/sha512-ce-glue.c121
1 files changed, 121 insertions, 0 deletions
diff --git a/arch/arm64/crypto/sha512-ce-glue.c b/arch/arm64/crypto/sha512-ce-glue.c
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+++ b/arch/arm64/crypto/sha512-ce-glue.c
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+// SPDX-License-Identifier: GPL-2.0
+/*
+ * sha512-ce-glue.c - SHA-384/SHA-512 using ARMv8 Crypto Extensions
+ *
+ * Copyright (C) 2018 Linaro Ltd <ard.biesheuvel@linaro.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <asm/neon.h>
+#include <asm/simd.h>
+#include <asm/unaligned.h>
+#include <crypto/internal/hash.h>
+#include <crypto/internal/simd.h>
+#include <crypto/sha2.h>
+#include <crypto/sha512_base.h>
+#include <linux/cpufeature.h>
+#include <linux/crypto.h>
+#include <linux/module.h>
+
+MODULE_DESCRIPTION("SHA-384/SHA-512 secure hash using ARMv8 Crypto Extensions");
+MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS_CRYPTO("sha384");
+MODULE_ALIAS_CRYPTO("sha512");
+
+asmlinkage int sha512_ce_transform(struct sha512_state *sst, u8 const *src,
+ int blocks);
+
+asmlinkage void sha512_block_data_order(u64 *digest, u8 const *src, int blocks);
+
+static void __sha512_ce_transform(struct sha512_state *sst, u8 const *src,
+ int blocks)
+{
+ while (blocks) {
+ int rem;
+
+ kernel_neon_begin();
+ rem = sha512_ce_transform(sst, src, blocks);
+ kernel_neon_end();
+ src += (blocks - rem) * SHA512_BLOCK_SIZE;
+ blocks = rem;
+ }
+}
+
+static void __sha512_block_data_order(struct sha512_state *sst, u8 const *src,
+ int blocks)
+{
+ sha512_block_data_order(sst->state, src, blocks);
+}
+
+static int sha512_ce_update(struct shash_desc *desc, const u8 *data,
+ unsigned int len)
+{
+ sha512_block_fn *fn = crypto_simd_usable() ? __sha512_ce_transform
+ : __sha512_block_data_order;
+
+ sha512_base_do_update(desc, data, len, fn);
+ return 0;
+}
+
+static int sha512_ce_finup(struct shash_desc *desc, const u8 *data,
+ unsigned int len, u8 *out)
+{
+ sha512_block_fn *fn = crypto_simd_usable() ? __sha512_ce_transform
+ : __sha512_block_data_order;
+
+ sha512_base_do_update(desc, data, len, fn);
+ sha512_base_do_finalize(desc, fn);
+ return sha512_base_finish(desc, out);
+}
+
+static int sha512_ce_final(struct shash_desc *desc, u8 *out)
+{
+ sha512_block_fn *fn = crypto_simd_usable() ? __sha512_ce_transform
+ : __sha512_block_data_order;
+
+ sha512_base_do_finalize(desc, fn);
+ return sha512_base_finish(desc, out);
+}
+
+static struct shash_alg algs[] = { {
+ .init = sha384_base_init,
+ .update = sha512_ce_update,
+ .final = sha512_ce_final,
+ .finup = sha512_ce_finup,
+ .descsize = sizeof(struct sha512_state),
+ .digestsize = SHA384_DIGEST_SIZE,
+ .base.cra_name = "sha384",
+ .base.cra_driver_name = "sha384-ce",
+ .base.cra_priority = 200,
+ .base.cra_blocksize = SHA512_BLOCK_SIZE,
+ .base.cra_module = THIS_MODULE,
+}, {
+ .init = sha512_base_init,
+ .update = sha512_ce_update,
+ .final = sha512_ce_final,
+ .finup = sha512_ce_finup,
+ .descsize = sizeof(struct sha512_state),
+ .digestsize = SHA512_DIGEST_SIZE,
+ .base.cra_name = "sha512",
+ .base.cra_driver_name = "sha512-ce",
+ .base.cra_priority = 200,
+ .base.cra_blocksize = SHA512_BLOCK_SIZE,
+ .base.cra_module = THIS_MODULE,
+} };
+
+static int __init sha512_ce_mod_init(void)
+{
+ return crypto_register_shashes(algs, ARRAY_SIZE(algs));
+}
+
+static void __exit sha512_ce_mod_fini(void)
+{
+ crypto_unregister_shashes(algs, ARRAY_SIZE(algs));
+}
+
+module_cpu_feature_match(SHA512, sha512_ce_mod_init);
+module_exit(sha512_ce_mod_fini);