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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/sm3-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/sm3-ce-glue.c')
-rw-r--r--arch/arm64/crypto/sm3-ce-glue.c101
1 files changed, 101 insertions, 0 deletions
diff --git a/arch/arm64/crypto/sm3-ce-glue.c b/arch/arm64/crypto/sm3-ce-glue.c
new file mode 100644
index 000000000..ee98954ae
--- /dev/null
+++ b/arch/arm64/crypto/sm3-ce-glue.c
@@ -0,0 +1,101 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * sm3-ce-glue.c - SM3 secure hash using ARMv8.2 Crypto Extensions
+ *
+ * Copyright (C) 2018 Linaro Ltd <ard.biesheuvel@linaro.org>
+ */
+
+#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>
+
+MODULE_DESCRIPTION("SM3 secure hash using ARMv8 Crypto Extensions");
+MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>");
+MODULE_LICENSE("GPL v2");
+
+asmlinkage void sm3_ce_transform(struct sm3_state *sst, u8 const *src,
+ int blocks);
+
+static int sm3_ce_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_ce_transform);
+ kernel_neon_end();
+
+ return 0;
+}
+
+static int sm3_ce_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_ce_transform);
+ kernel_neon_end();
+
+ return sm3_base_finish(desc, out);
+}
+
+static int sm3_ce_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_ce_transform);
+ sm3_base_do_finalize(desc, sm3_ce_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_ce_update,
+ .final = sm3_ce_final,
+ .finup = sm3_ce_finup,
+ .descsize = sizeof(struct sm3_state),
+ .base.cra_name = "sm3",
+ .base.cra_driver_name = "sm3-ce",
+ .base.cra_blocksize = SM3_BLOCK_SIZE,
+ .base.cra_module = THIS_MODULE,
+ .base.cra_priority = 200,
+};
+
+static int __init sm3_ce_mod_init(void)
+{
+ return crypto_register_shash(&sm3_alg);
+}
+
+static void __exit sm3_ce_mod_fini(void)
+{
+ crypto_unregister_shash(&sm3_alg);
+}
+
+module_cpu_feature_match(SM3, sm3_ce_mod_init);
+module_exit(sm3_ce_mod_fini);