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authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/arm/crypto/sha1_neon_glue.c
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/arm/crypto/sha1_neon_glue.c')
-rw-r--r--kernel/arch/arm/crypto/sha1_neon_glue.c110
1 files changed, 110 insertions, 0 deletions
diff --git a/kernel/arch/arm/crypto/sha1_neon_glue.c b/kernel/arch/arm/crypto/sha1_neon_glue.c
new file mode 100644
index 000000000..4e22f122f
--- /dev/null
+++ b/kernel/arch/arm/crypto/sha1_neon_glue.c
@@ -0,0 +1,110 @@
+/*
+ * Glue code for the SHA1 Secure Hash Algorithm assembler implementation using
+ * ARM NEON instructions.
+ *
+ * Copyright © 2014 Jussi Kivilinna <jussi.kivilinna@iki.fi>
+ *
+ * This file is based on sha1_generic.c and sha1_ssse3_glue.c:
+ * Copyright (c) Alan Smithee.
+ * Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk>
+ * Copyright (c) Jean-Francois Dive <jef@linuxbe.org>
+ * Copyright (c) Mathias Krause <minipli@googlemail.com>
+ * Copyright (c) Chandramouli Narayanan <mouli@linux.intel.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ */
+
+#include <crypto/internal/hash.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/mm.h>
+#include <linux/cryptohash.h>
+#include <linux/types.h>
+#include <crypto/sha.h>
+#include <crypto/sha1_base.h>
+#include <asm/neon.h>
+#include <asm/simd.h>
+
+#include "sha1.h"
+
+asmlinkage void sha1_transform_neon(void *state_h, const char *data,
+ unsigned int rounds);
+
+static int sha1_neon_update(struct shash_desc *desc, const u8 *data,
+ unsigned int len)
+{
+ struct sha1_state *sctx = shash_desc_ctx(desc);
+
+ if (!may_use_simd() ||
+ (sctx->count % SHA1_BLOCK_SIZE) + len < SHA1_BLOCK_SIZE)
+ return sha1_update_arm(desc, data, len);
+
+ kernel_neon_begin();
+ sha1_base_do_update(desc, data, len,
+ (sha1_block_fn *)sha1_transform_neon);
+ kernel_neon_end();
+
+ return 0;
+}
+
+static int sha1_neon_finup(struct shash_desc *desc, const u8 *data,
+ unsigned int len, u8 *out)
+{
+ if (!may_use_simd())
+ return sha1_finup_arm(desc, data, len, out);
+
+ kernel_neon_begin();
+ if (len)
+ sha1_base_do_update(desc, data, len,
+ (sha1_block_fn *)sha1_transform_neon);
+ sha1_base_do_finalize(desc, (sha1_block_fn *)sha1_transform_neon);
+ kernel_neon_end();
+
+ return sha1_base_finish(desc, out);
+}
+
+static int sha1_neon_final(struct shash_desc *desc, u8 *out)
+{
+ return sha1_neon_finup(desc, NULL, 0, out);
+}
+
+static struct shash_alg alg = {
+ .digestsize = SHA1_DIGEST_SIZE,
+ .init = sha1_base_init,
+ .update = sha1_neon_update,
+ .final = sha1_neon_final,
+ .finup = sha1_neon_finup,
+ .descsize = sizeof(struct sha1_state),
+ .base = {
+ .cra_name = "sha1",
+ .cra_driver_name = "sha1-neon",
+ .cra_priority = 250,
+ .cra_flags = CRYPTO_ALG_TYPE_SHASH,
+ .cra_blocksize = SHA1_BLOCK_SIZE,
+ .cra_module = THIS_MODULE,
+ }
+};
+
+static int __init sha1_neon_mod_init(void)
+{
+ if (!cpu_has_neon())
+ return -ENODEV;
+
+ return crypto_register_shash(&alg);
+}
+
+static void __exit sha1_neon_mod_fini(void)
+{
+ crypto_unregister_shash(&alg);
+}
+
+module_init(sha1_neon_mod_init);
+module_exit(sha1_neon_mod_fini);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("SHA1 Secure Hash Algorithm, NEON accelerated");
+MODULE_ALIAS_CRYPTO("sha1");