| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 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 | extern struct shash_alg p8_ghash_alg; |
| 21 | extern struct crypto_alg p8_aes_alg; |
| 22 | extern struct skcipher_alg p8_aes_cbc_alg; |
| 23 | extern struct skcipher_alg p8_aes_ctr_alg; |
| 24 | extern struct skcipher_alg p8_aes_xts_alg; |
| 25 | |
| 26 | static int __init p8_init(void) |
| 27 | { |
| 28 | int ret; |
| 29 | |
| 30 | ret = crypto_register_shash(&p8_ghash_alg); |
| 31 | if (ret) |
| 32 | goto err; |
| 33 | |
| 34 | ret = crypto_register_alg(&p8_aes_alg); |
| 35 | if (ret) |
| 36 | goto err_unregister_ghash; |
| 37 | |
| 38 | ret = crypto_register_skcipher(&p8_aes_cbc_alg); |
| 39 | if (ret) |
| 40 | goto err_unregister_aes; |
| 41 | |
| 42 | ret = crypto_register_skcipher(&p8_aes_ctr_alg); |
| 43 | if (ret) |
| 44 | goto err_unregister_aes_cbc; |
| 45 | |
| 46 | ret = crypto_register_skcipher(&p8_aes_xts_alg); |
| 47 | if (ret) |
| 48 | goto err_unregister_aes_ctr; |
| 49 | |
| 50 | return 0; |
| 51 | |
| 52 | err_unregister_aes_ctr: |
| 53 | crypto_unregister_skcipher(&p8_aes_ctr_alg); |
| 54 | err_unregister_aes_cbc: |
| 55 | crypto_unregister_skcipher(&p8_aes_cbc_alg); |
| 56 | err_unregister_aes: |
| 57 | crypto_unregister_alg(&p8_aes_alg); |
| 58 | err_unregister_ghash: |
| 59 | crypto_unregister_shash(&p8_ghash_alg); |
| 60 | err: |
| 61 | return ret; |
| 62 | } |
| 63 | |
| 64 | static void __exit p8_exit(void) |
| 65 | { |
| 66 | crypto_unregister_skcipher(&p8_aes_xts_alg); |
| 67 | crypto_unregister_skcipher(&p8_aes_ctr_alg); |
| 68 | crypto_unregister_skcipher(&p8_aes_cbc_alg); |
| 69 | crypto_unregister_alg(&p8_aes_alg); |
| 70 | crypto_unregister_shash(&p8_ghash_alg); |
| 71 | } |
| 72 | |
| 73 | module_cpu_feature_match(PPC_MODULE_FEATURE_VEC_CRYPTO, p8_init); |
| 74 | module_exit(p8_exit); |
| 75 | |
| 76 | MODULE_AUTHOR("Marcelo Cerri<mhcerri@br.ibm.com>"); |
| 77 | MODULE_DESCRIPTION("IBM VMX cryptographic acceleration instructions " |
| 78 | "support on Power 8"); |
| 79 | MODULE_LICENSE("GPL"); |
| 80 | MODULE_VERSION("1.0.0"); |