1 files changed, 103 insertions, 0 deletions
diff --git a/arch/arm64/crypto/sm3-neon-glue.c b/arch/arm64/crypto/sm3-neon-glue.c
new file mode 100644
index 000000000000..7182ee683f14
--- /dev/null
+++ b/arch/arm64/crypto/sm3-neon-glue.c
@@ -0,0 +1,103 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * sm3-neon-glue.c - SM3 secure hash using NEON instructions
+ *
+ * Copyright (C) 2022 Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
+ */
+
+#include <asm/neon.h>
+#include <asm/simd.h>
+#include <asm/unaligned.h>
+#include <crypto/internal/hash.h>
+#include <crypto/internal/simd.h>
+#include <crypto/sm3.h>
+#include <crypto/sm3_base.h>
+#include <linux/cpufeature.h>
+#include <linux/crypto.h>
+#include <linux/module.h>
+
+
+asmlinkage void sm3_neon_transform(struct sm3_state *sst, u8 const *src,
+				   int blocks);
+
+static int sm3_neon_update(struct shash_desc *desc, const u8 *data,
+			   unsigned int len)
+{
+	if (!crypto_simd_usable()) {
+		sm3_update(shash_desc_ctx(desc), data, len);
+		return 0;
+	}
+
+	kernel_neon_begin();
+	sm3_base_do_update(desc, data, len, sm3_neon_transform);
+	kernel_neon_end();
+
+	return 0;
+}
+
+static int sm3_neon_final(struct shash_desc *desc, u8 *out)
+{
+	if (!crypto_simd_usable()) {
+		sm3_final(shash_desc_ctx(desc), out);
+		return 0;
+	}
+
+	kernel_neon_begin();
+	sm3_base_do_finalize(desc, sm3_neon_transform);
+	kernel_neon_end();
+
+	return sm3_base_finish(desc, out);
+}
+
+static int sm3_neon_finup(struct shash_desc *desc, const u8 *data,
+			  unsigned int len, u8 *out)
+{
+	if (!crypto_simd_usable()) {
+		struct sm3_state *sctx = shash_desc_ctx(desc);
+
+		if (len)
+			sm3_update(sctx, data, len);
+		sm3_final(sctx, out);
+		return 0;
+	}
+
+	kernel_neon_begin();
+	if (len)
+		sm3_base_do_update(desc, data, len, sm3_neon_transform);
+	sm3_base_do_finalize(desc, sm3_neon_transform);
+	kernel_neon_end();
+
+	return sm3_base_finish(desc, out);
+}
+
+static struct shash_alg sm3_alg = {
+	.digestsize		= SM3_DIGEST_SIZE,
+	.init			= sm3_base_init,
+	.update			= sm3_neon_update,
+	.final			= sm3_neon_final,
+	.finup			= sm3_neon_finup,
+	.descsize		= sizeof(struct sm3_state),
+	.base.cra_name		= "sm3",
+	.base.cra_driver_name	= "sm3-neon",
+	.base.cra_blocksize	= SM3_BLOCK_SIZE,
+	.base.cra_module	= THIS_MODULE,
+	.base.cra_priority	= 200,
+};
+
+static int __init sm3_neon_init(void)
+{
+	return crypto_register_shash(&sm3_alg);
+}
+
+static void __exit sm3_neon_fini(void)
+{
+	crypto_unregister_shash(&sm3_alg);
+}
+
+module_init(sm3_neon_init);
+module_exit(sm3_neon_fini);
+
+MODULE_DESCRIPTION("SM3 secure hash using NEON instructions");
+MODULE_AUTHOR("Jussi Kivilinna <jussi.kivilinna@iki.fi>");
+MODULE_AUTHOR("Tianjia Zhang <tianjia.zhang@linux.alibaba.com>");
+MODULE_LICENSE("GPL v2");