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77735920ca
Since arch/sparc/crypto/opcodes.h is now needed outside the arch/sparc/crypto/ directory, move it into arch/sparc/include/asm/ so that it can be included as <asm/opcodes.h>. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
123 lines
3.0 KiB
C
123 lines
3.0 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/* Glue code for SHA512 hashing optimized for sparc64 crypto opcodes.
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*
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* This is based largely upon crypto/sha512_generic.c
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*
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* Copyright (c) Jean-Luc Cooke <jlcooke@certainkey.com>
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* Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk>
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* Copyright (c) 2003 Kyle McMartin <kyle@debian.org>
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <asm/elf.h>
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#include <asm/opcodes.h>
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#include <asm/pstate.h>
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#include <crypto/internal/hash.h>
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#include <crypto/sha2.h>
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#include <crypto/sha512_base.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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asmlinkage void sha512_sparc64_transform(u64 *digest, const char *data,
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unsigned int rounds);
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static void sha512_block(struct sha512_state *sctx, const u8 *src, int blocks)
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{
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sha512_sparc64_transform(sctx->state, src, blocks);
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}
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static int sha512_sparc64_update(struct shash_desc *desc, const u8 *data,
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unsigned int len)
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{
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return sha512_base_do_update_blocks(desc, data, len, sha512_block);
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}
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static int sha512_sparc64_finup(struct shash_desc *desc, const u8 *src,
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unsigned int len, u8 *out)
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{
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sha512_base_do_finup(desc, src, len, sha512_block);
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return sha512_base_finish(desc, out);
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}
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static struct shash_alg sha512 = {
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.digestsize = SHA512_DIGEST_SIZE,
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.init = sha512_base_init,
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.update = sha512_sparc64_update,
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.finup = sha512_sparc64_finup,
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.descsize = SHA512_STATE_SIZE,
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.base = {
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.cra_name = "sha512",
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.cra_driver_name= "sha512-sparc64",
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.cra_priority = SPARC_CR_OPCODE_PRIORITY,
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.cra_blocksize = SHA512_BLOCK_SIZE,
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.cra_module = THIS_MODULE,
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}
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};
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static struct shash_alg sha384 = {
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.digestsize = SHA384_DIGEST_SIZE,
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.init = sha384_base_init,
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.update = sha512_sparc64_update,
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.finup = sha512_sparc64_finup,
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.descsize = SHA512_STATE_SIZE,
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.base = {
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.cra_name = "sha384",
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.cra_driver_name= "sha384-sparc64",
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.cra_priority = SPARC_CR_OPCODE_PRIORITY,
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.cra_blocksize = SHA384_BLOCK_SIZE,
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.cra_module = THIS_MODULE,
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}
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};
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static bool __init sparc64_has_sha512_opcode(void)
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{
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unsigned long cfr;
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if (!(sparc64_elf_hwcap & HWCAP_SPARC_CRYPTO))
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return false;
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__asm__ __volatile__("rd %%asr26, %0" : "=r" (cfr));
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if (!(cfr & CFR_SHA512))
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return false;
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return true;
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}
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static int __init sha512_sparc64_mod_init(void)
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{
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if (sparc64_has_sha512_opcode()) {
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int ret = crypto_register_shash(&sha384);
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if (ret < 0)
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return ret;
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ret = crypto_register_shash(&sha512);
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if (ret < 0) {
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crypto_unregister_shash(&sha384);
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return ret;
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}
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pr_info("Using sparc64 sha512 opcode optimized SHA-512/SHA-384 implementation\n");
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return 0;
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}
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pr_info("sparc64 sha512 opcode not available.\n");
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return -ENODEV;
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}
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static void __exit sha512_sparc64_mod_fini(void)
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{
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crypto_unregister_shash(&sha384);
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crypto_unregister_shash(&sha512);
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}
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module_init(sha512_sparc64_mod_init);
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module_exit(sha512_sparc64_mod_fini);
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("SHA-384 and SHA-512 Secure Hash Algorithm, sparc64 sha512 opcode accelerated");
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MODULE_ALIAS_CRYPTO("sha384");
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MODULE_ALIAS_CRYPTO("sha512");
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#include "crop_devid.c"
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