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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/arm/crypto/sha256_neon_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/arm/crypto/sha256_neon_glue.c')
-rw-r--r--arch/arm/crypto/sha256_neon_glue.c94
1 files changed, 94 insertions, 0 deletions
diff --git a/arch/arm/crypto/sha256_neon_glue.c b/arch/arm/crypto/sha256_neon_glue.c
new file mode 100644
index 000000000..701706262
--- /dev/null
+++ b/arch/arm/crypto/sha256_neon_glue.c
@@ -0,0 +1,94 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Glue code for the SHA256 Secure Hash Algorithm assembly implementation
+ * using NEON instructions.
+ *
+ * Copyright © 2015 Google Inc.
+ *
+ * This file is based on sha512_neon_glue.c:
+ * Copyright © 2014 Jussi Kivilinna <jussi.kivilinna@iki.fi>
+ */
+
+#include <crypto/internal/hash.h>
+#include <crypto/internal/simd.h>
+#include <linux/types.h>
+#include <linux/string.h>
+#include <crypto/sha2.h>
+#include <crypto/sha256_base.h>
+#include <asm/byteorder.h>
+#include <asm/simd.h>
+#include <asm/neon.h>
+
+#include "sha256_glue.h"
+
+asmlinkage void sha256_block_data_order_neon(u32 *digest, const void *data,
+ unsigned int num_blks);
+
+static int crypto_sha256_neon_update(struct shash_desc *desc, const u8 *data,
+ unsigned int len)
+{
+ struct sha256_state *sctx = shash_desc_ctx(desc);
+
+ if (!crypto_simd_usable() ||
+ (sctx->count % SHA256_BLOCK_SIZE) + len < SHA256_BLOCK_SIZE)
+ return crypto_sha256_arm_update(desc, data, len);
+
+ kernel_neon_begin();
+ sha256_base_do_update(desc, data, len,
+ (sha256_block_fn *)sha256_block_data_order_neon);
+ kernel_neon_end();
+
+ return 0;
+}
+
+static int crypto_sha256_neon_finup(struct shash_desc *desc, const u8 *data,
+ unsigned int len, u8 *out)
+{
+ if (!crypto_simd_usable())
+ return crypto_sha256_arm_finup(desc, data, len, out);
+
+ kernel_neon_begin();
+ if (len)
+ sha256_base_do_update(desc, data, len,
+ (sha256_block_fn *)sha256_block_data_order_neon);
+ sha256_base_do_finalize(desc,
+ (sha256_block_fn *)sha256_block_data_order_neon);
+ kernel_neon_end();
+
+ return sha256_base_finish(desc, out);
+}
+
+static int crypto_sha256_neon_final(struct shash_desc *desc, u8 *out)
+{
+ return crypto_sha256_neon_finup(desc, NULL, 0, out);
+}
+
+struct shash_alg sha256_neon_algs[] = { {
+ .digestsize = SHA256_DIGEST_SIZE,
+ .init = sha256_base_init,
+ .update = crypto_sha256_neon_update,
+ .final = crypto_sha256_neon_final,
+ .finup = crypto_sha256_neon_finup,
+ .descsize = sizeof(struct sha256_state),
+ .base = {
+ .cra_name = "sha256",
+ .cra_driver_name = "sha256-neon",
+ .cra_priority = 250,
+ .cra_blocksize = SHA256_BLOCK_SIZE,
+ .cra_module = THIS_MODULE,
+ }
+}, {
+ .digestsize = SHA224_DIGEST_SIZE,
+ .init = sha224_base_init,
+ .update = crypto_sha256_neon_update,
+ .final = crypto_sha256_neon_final,
+ .finup = crypto_sha256_neon_finup,
+ .descsize = sizeof(struct sha256_state),
+ .base = {
+ .cra_name = "sha224",
+ .cra_driver_name = "sha224-neon",
+ .cra_priority = 250,
+ .cra_blocksize = SHA224_BLOCK_SIZE,
+ .cra_module = THIS_MODULE,
+ }
+} };