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-rw-r--r--arch/arm64/crypto/sm3-neon-glue.c103
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 0000000000..7182ee683f
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+++ 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");