diff --git a/drivers/crypto/vmx/vmx.c b/drivers/crypto/vmx/vmx.c new file mode 100644 index 000000000000..44d8d5cfe40d --- /dev/null +++ b/drivers/crypto/vmx/vmx.c @@ -0,0 +1,88 @@ +/** + * Routines supporting VMX instructions on the Power 8 + * + * Copyright (C) 2015 International Business Machines Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 only. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + * Author: Marcelo Henrique Cerri + */ + +#include +#include +#include +#include +#include +#include +#include + +extern struct shash_alg p8_ghash_alg; +extern struct crypto_alg p8_aes_alg; +extern struct crypto_alg p8_aes_cbc_alg; +extern struct crypto_alg p8_aes_ctr_alg; +static struct crypto_alg *algs[] = { + &p8_aes_alg, + &p8_aes_cbc_alg, + &p8_aes_ctr_alg, + NULL, +}; + +int __init p8_init(void) +{ + int ret = 0; + struct crypto_alg **alg_it; + + if (!(cur_cpu_spec->cpu_user_features2 & PPC_FEATURE2_VEC_CRYPTO)) + return -ENODEV; + + for (alg_it = algs; *alg_it; alg_it++) { + ret = crypto_register_alg(*alg_it); + printk(KERN_INFO "crypto_register_alg '%s' = %d\n", + (*alg_it)->cra_name, ret); + if (ret) { + for (alg_it--; alg_it >= algs; alg_it--) + crypto_unregister_alg(*alg_it); + break; + } + } + if (ret) + return ret; + + ret = crypto_register_shash(&p8_ghash_alg); + if (ret) { + for (alg_it = algs; *alg_it; alg_it++) + crypto_unregister_alg(*alg_it); + } + return ret; +} + +void __exit p8_exit(void) +{ + struct crypto_alg **alg_it; + + for (alg_it = algs; *alg_it; alg_it++) { + printk(KERN_INFO "Removing '%s'\n", (*alg_it)->cra_name); + crypto_unregister_alg(*alg_it); + } + crypto_unregister_shash(&p8_ghash_alg); +} + +module_init(p8_init); +module_exit(p8_exit); + +MODULE_AUTHOR("Marcelo Cerri"); +MODULE_DESCRIPTION("IBM VMX cryptogaphic acceleration instructions support on Power 8"); +MODULE_LICENSE("GPL"); +MODULE_VERSION("1.0.0"); +