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ef93f15628
This reverts commit c4741b2305.
Crypto API self-tests no longer run at registration time and now
occur either at late_initcall or upon the first use.
Therefore the premise of the above commit no longer exists. Revert
it and subsequent additions of subsys_initcall and arch_initcall.
Note that lib/crypto calls will stay at subsys_initcall (or rather
downgraded from arch_initcall) because they may need to occur
before Crypto API registration.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
64 lines
1.7 KiB
C
64 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* SHA-256 accelerated using the sparc64 sha256 opcodes
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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) 2002 James Morris <jmorris@intercode.com.au>
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* SHA224 Support Copyright 2007 Intel Corporation <jonathan.lynch@intel.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/sha2.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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static __ro_after_init DEFINE_STATIC_KEY_FALSE(have_sha256_opcodes);
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asmlinkage void sha256_sparc64_transform(u32 state[SHA256_STATE_WORDS],
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const u8 *data, size_t nblocks);
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void sha256_blocks_arch(u32 state[SHA256_STATE_WORDS],
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const u8 *data, size_t nblocks)
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{
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if (static_branch_likely(&have_sha256_opcodes))
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sha256_sparc64_transform(state, data, nblocks);
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else
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sha256_blocks_generic(state, data, nblocks);
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}
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EXPORT_SYMBOL(sha256_blocks_arch);
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bool sha256_is_arch_optimized(void)
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{
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return static_key_enabled(&have_sha256_opcodes);
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}
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EXPORT_SYMBOL(sha256_is_arch_optimized);
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static int __init sha256_sparc64_mod_init(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 0;
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__asm__ __volatile__("rd %%asr26, %0" : "=r" (cfr));
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if (!(cfr & CFR_SHA256))
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return 0;
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static_branch_enable(&have_sha256_opcodes);
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pr_info("Using sparc64 sha256 opcode optimized SHA-256/SHA-224 implementation\n");
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return 0;
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}
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subsys_initcall(sha256_sparc64_mod_init);
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static void __exit sha256_sparc64_mod_exit(void)
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{
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}
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module_exit(sha256_sparc64_mod_exit);
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("SHA-256 accelerated using the sparc64 sha256 opcodes");
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