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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>
95 lines
2.4 KiB
C
95 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/* Glue code for SHA1 hashing optimized for sparc64 crypto opcodes.
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*
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* This is based largely upon arch/x86/crypto/sha1_ssse3_glue.c
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*
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* Copyright (c) Alan Smithee.
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* Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk>
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* Copyright (c) Jean-Francois Dive <jef@linuxbe.org>
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* Copyright (c) Mathias Krause <minipli@googlemail.com>
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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/sha1.h>
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#include <crypto/sha1_base.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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asmlinkage void sha1_sparc64_transform(struct sha1_state *digest,
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const u8 *data, int rounds);
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static int sha1_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 sha1_base_do_update_blocks(desc, data, len,
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sha1_sparc64_transform);
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}
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/* Add padding and return the message digest. */
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static int sha1_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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sha1_base_do_finup(desc, src, len, sha1_sparc64_transform);
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return sha1_base_finish(desc, out);
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}
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static struct shash_alg alg = {
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.digestsize = SHA1_DIGEST_SIZE,
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.init = sha1_base_init,
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.update = sha1_sparc64_update,
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.finup = sha1_sparc64_finup,
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.descsize = SHA1_STATE_SIZE,
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.base = {
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.cra_name = "sha1",
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.cra_driver_name= "sha1-sparc64",
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.cra_priority = SPARC_CR_OPCODE_PRIORITY,
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.cra_flags = CRYPTO_AHASH_ALG_BLOCK_ONLY,
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.cra_blocksize = SHA1_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_sha1_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_SHA1))
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return false;
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return true;
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}
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static int __init sha1_sparc64_mod_init(void)
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{
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if (sparc64_has_sha1_opcode()) {
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pr_info("Using sparc64 sha1 opcode optimized SHA-1 implementation\n");
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return crypto_register_shash(&alg);
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}
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pr_info("sparc64 sha1 opcode not available.\n");
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return -ENODEV;
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}
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static void __exit sha1_sparc64_mod_fini(void)
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{
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crypto_unregister_shash(&alg);
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}
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module_init(sha1_sparc64_mod_init);
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module_exit(sha1_sparc64_mod_fini);
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("SHA1 Secure Hash Algorithm, sparc64 sha1 opcode accelerated");
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MODULE_ALIAS_CRYPTO("sha1");
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#include "crop_devid.c"
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