89 lines
2.4 KiB
C
89 lines
2.4 KiB
C
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/**
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* Routines supporting VMX instructions on the Power 8
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*
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* Copyright (C) 2015 International Business Machines Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 only.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* Author: Marcelo Henrique Cerri <mhcerri@br.ibm.com>
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/types.h>
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#include <linux/err.h>
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#include <linux/cpufeature.h>
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#include <linux/crypto.h>
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#include <asm/cputable.h>
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#include <crypto/internal/hash.h>
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extern struct shash_alg p8_ghash_alg;
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extern struct crypto_alg p8_aes_alg;
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extern struct crypto_alg p8_aes_cbc_alg;
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extern struct crypto_alg p8_aes_ctr_alg;
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extern struct crypto_alg p8_aes_xts_alg;
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static struct crypto_alg *algs[] = {
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&p8_aes_alg,
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&p8_aes_cbc_alg,
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&p8_aes_ctr_alg,
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&p8_aes_xts_alg,
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NULL,
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};
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int __init p8_init(void)
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{
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int ret = 0;
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struct crypto_alg **alg_it;
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for (alg_it = algs; *alg_it; alg_it++) {
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ret = crypto_register_alg(*alg_it);
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printk(KERN_INFO "crypto_register_alg '%s' = %d\n",
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(*alg_it)->cra_name, ret);
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if (ret) {
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for (alg_it--; alg_it >= algs; alg_it--)
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crypto_unregister_alg(*alg_it);
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break;
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}
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}
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if (ret)
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return ret;
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ret = crypto_register_shash(&p8_ghash_alg);
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if (ret) {
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for (alg_it = algs; *alg_it; alg_it++)
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crypto_unregister_alg(*alg_it);
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}
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return ret;
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}
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void __exit p8_exit(void)
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{
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struct crypto_alg **alg_it;
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for (alg_it = algs; *alg_it; alg_it++) {
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printk(KERN_INFO "Removing '%s'\n", (*alg_it)->cra_name);
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crypto_unregister_alg(*alg_it);
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}
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crypto_unregister_shash(&p8_ghash_alg);
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}
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module_cpu_feature_match(PPC_MODULE_FEATURE_VEC_CRYPTO, p8_init);
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module_exit(p8_exit);
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MODULE_AUTHOR("Marcelo Cerri<mhcerri@br.ibm.com>");
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MODULE_DESCRIPTION("IBM VMX cryptographic acceleration instructions "
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"support on Power 8");
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MODULE_LICENSE("GPL");
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MODULE_VERSION("1.0.0");
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