From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: 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 Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior 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 --- kernel/arch/arm64/crypto/sha2-ce-glue.c | 130 ++++++++++++++++++++++++++++++++ 1 file changed, 130 insertions(+) create mode 100644 kernel/arch/arm64/crypto/sha2-ce-glue.c (limited to 'kernel/arch/arm64/crypto/sha2-ce-glue.c') diff --git a/kernel/arch/arm64/crypto/sha2-ce-glue.c b/kernel/arch/arm64/crypto/sha2-ce-glue.c new file mode 100644 index 000000000..7cd587564 --- /dev/null +++ b/kernel/arch/arm64/crypto/sha2-ce-glue.c @@ -0,0 +1,130 @@ +/* + * sha2-ce-glue.c - SHA-224/SHA-256 using ARMv8 Crypto Extensions + * + * Copyright (C) 2014 Linaro Ltd + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#define ASM_EXPORT(sym, val) \ + asm(".globl " #sym "; .set " #sym ", %0" :: "I"(val)); + +MODULE_DESCRIPTION("SHA-224/SHA-256 secure hash using ARMv8 Crypto Extensions"); +MODULE_AUTHOR("Ard Biesheuvel "); +MODULE_LICENSE("GPL v2"); + +struct sha256_ce_state { + struct sha256_state sst; + u32 finalize; +}; + +asmlinkage void sha2_ce_transform(struct sha256_ce_state *sst, u8 const *src, + int blocks); + +static int sha256_ce_update(struct shash_desc *desc, const u8 *data, + unsigned int len) +{ + struct sha256_ce_state *sctx = shash_desc_ctx(desc); + + sctx->finalize = 0; + kernel_neon_begin_partial(28); + sha256_base_do_update(desc, data, len, + (sha256_block_fn *)sha2_ce_transform); + kernel_neon_end(); + + return 0; +} + +static int sha256_ce_finup(struct shash_desc *desc, const u8 *data, + unsigned int len, u8 *out) +{ + struct sha256_ce_state *sctx = shash_desc_ctx(desc); + bool finalize = !sctx->sst.count && !(len % SHA256_BLOCK_SIZE); + + ASM_EXPORT(sha256_ce_offsetof_count, + offsetof(struct sha256_ce_state, sst.count)); + ASM_EXPORT(sha256_ce_offsetof_finalize, + offsetof(struct sha256_ce_state, finalize)); + + /* + * Allow the asm code to perform the finalization if there is no + * partial data and the input is a round multiple of the block size. + */ + sctx->finalize = finalize; + + kernel_neon_begin_partial(28); + sha256_base_do_update(desc, data, len, + (sha256_block_fn *)sha2_ce_transform); + if (!finalize) + sha256_base_do_finalize(desc, + (sha256_block_fn *)sha2_ce_transform); + kernel_neon_end(); + return sha256_base_finish(desc, out); +} + +static int sha256_ce_final(struct shash_desc *desc, u8 *out) +{ + struct sha256_ce_state *sctx = shash_desc_ctx(desc); + + sctx->finalize = 0; + kernel_neon_begin_partial(28); + sha256_base_do_finalize(desc, (sha256_block_fn *)sha2_ce_transform); + kernel_neon_end(); + return sha256_base_finish(desc, out); +} + +static struct shash_alg algs[] = { { + .init = sha224_base_init, + .update = sha256_ce_update, + .final = sha256_ce_final, + .finup = sha256_ce_finup, + .descsize = sizeof(struct sha256_ce_state), + .digestsize = SHA224_DIGEST_SIZE, + .base = { + .cra_name = "sha224", + .cra_driver_name = "sha224-ce", + .cra_priority = 200, + .cra_flags = CRYPTO_ALG_TYPE_SHASH, + .cra_blocksize = SHA256_BLOCK_SIZE, + .cra_module = THIS_MODULE, + } +}, { + .init = sha256_base_init, + .update = sha256_ce_update, + .final = sha256_ce_final, + .finup = sha256_ce_finup, + .descsize = sizeof(struct sha256_ce_state), + .digestsize = SHA256_DIGEST_SIZE, + .base = { + .cra_name = "sha256", + .cra_driver_name = "sha256-ce", + .cra_priority = 200, + .cra_flags = CRYPTO_ALG_TYPE_SHASH, + .cra_blocksize = SHA256_BLOCK_SIZE, + .cra_module = THIS_MODULE, + } +} }; + +static int __init sha2_ce_mod_init(void) +{ + return crypto_register_shashes(algs, ARRAY_SIZE(algs)); +} + +static void __exit sha2_ce_mod_fini(void) +{ + crypto_unregister_shashes(algs, ARRAY_SIZE(algs)); +} + +module_cpu_feature_match(SHA2, sha2_ce_mod_init); +module_exit(sha2_ce_mod_fini); -- cgit 1.2.3-korg