LXR linux/drivers/crypto/vmx/vmx.c

   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * Routines supporting VMX instructions on the Power 8
   4 *
   5 * Copyright (C) 2015 International Business Machines Inc.
   6 *
   7 * Author: Marcelo Henrique Cerri <mhcerri@br.ibm.com>
   8 */
   9
  10#include <linux/module.h>
  11#include <linux/moduleparam.h>
  12#include <linux/types.h>
  13#include <linux/err.h>
  14#include <linux/cpufeature.h>
  15#include <linux/crypto.h>
  16#include <asm/cputable.h>
  17#include <crypto/internal/hash.h>
  18#include <crypto/internal/skcipher.h>
  19
  20#include "aesp8-ppc.h"
  21
  22static int __init p8_init(void)
  23{
  24        int ret;
  25
  26        ret = crypto_register_shash(&p8_ghash_alg);
  27        if (ret)
  28                goto err;
  29
  30        ret = crypto_register_alg(&p8_aes_alg);
  31        if (ret)
  32                goto err_unregister_ghash;
  33
  34        ret = crypto_register_skcipher(&p8_aes_cbc_alg);
  35        if (ret)
  36                goto err_unregister_aes;
  37
  38        ret = crypto_register_skcipher(&p8_aes_ctr_alg);
  39        if (ret)
  40                goto err_unregister_aes_cbc;
  41
  42        ret = crypto_register_skcipher(&p8_aes_xts_alg);
  43        if (ret)
  44                goto err_unregister_aes_ctr;
  45
  46        return 0;
  47
  48err_unregister_aes_ctr:
  49        crypto_unregister_skcipher(&p8_aes_ctr_alg);
  50err_unregister_aes_cbc:
  51        crypto_unregister_skcipher(&p8_aes_cbc_alg);
  52err_unregister_aes:
  53        crypto_unregister_alg(&p8_aes_alg);
  54err_unregister_ghash:
  55        crypto_unregister_shash(&p8_ghash_alg);
  56err:
  57        return ret;
  58}
  59
  60static void __exit p8_exit(void)
  61{
  62        crypto_unregister_skcipher(&p8_aes_xts_alg);
  63        crypto_unregister_skcipher(&p8_aes_ctr_alg);
  64        crypto_unregister_skcipher(&p8_aes_cbc_alg);
  65        crypto_unregister_alg(&p8_aes_alg);
  66        crypto_unregister_shash(&p8_ghash_alg);
  67}
  68
  69module_cpu_feature_match(PPC_MODULE_FEATURE_VEC_CRYPTO, p8_init);
  70module_exit(p8_exit);
  71
  72MODULE_AUTHOR("Marcelo Cerri<mhcerri@br.ibm.com>");
  73MODULE_DESCRIPTION("IBM VMX cryptographic acceleration instructions "
  74                   "support on Power 8");
  75MODULE_LICENSE("GPL");
  76MODULE_VERSION("1.0.0");
  77MODULE_IMPORT_NS(CRYPTO_INTERNAL);
  78