arch/s390/crypto/crypt_s390_query.c

   1 /*
   2  * Cryptographic API.
   3  *
   4  * Support for s390 cryptographic instructions.
   5  * Testing module for querying processor crypto capabilities.
   6  *
   7  * Copyright (c) 2003 IBM Deutschland Entwicklung GmbH, IBM Corporation
   8  * Author(s): Thomas Spatzier (tspat@de.ibm.com)
   9  *
  10  * This program is free software; you can redistribute it and/or modify it
  11  * under the terms of the GNU General Public License as published by the Free
  12  * Software Foundation; either version 2 of the License, or (at your option)
  13  * any later version.
  14  *
  15  */
  16 #include <linux/module.h>
  17 #include <linux/init.h>
  18 #include <linux/kernel.h>
  19 #include <asm/errno.h>
  20 #include "crypt_s390.h"
  21
  22 static void query_available_functions(void)
  23 {
  24         printk(KERN_INFO "#####################\n");
  25
  26         /* query available KM functions */
  27         printk(KERN_INFO "KM_QUERY: %d\n",
  28                 crypt_s390_func_available(KM_QUERY));
  29         printk(KERN_INFO "KM_DEA: %d\n",
  30                 crypt_s390_func_available(KM_DEA_ENCRYPT));
  31         printk(KERN_INFO "KM_TDEA_128: %d\n",
  32                 crypt_s390_func_available(KM_TDEA_128_ENCRYPT));
  33         printk(KERN_INFO "KM_TDEA_192: %d\n",
  34                 crypt_s390_func_available(KM_TDEA_192_ENCRYPT));
  35
  36         /* query available KMC functions */
  37         printk(KERN_INFO "KMC_QUERY: %d\n",
  38                 crypt_s390_func_available(KMC_QUERY));
  39         printk(KERN_INFO "KMC_DEA: %d\n",
  40                 crypt_s390_func_available(KMC_DEA_ENCRYPT));
  41         printk(KERN_INFO "KMC_TDEA_128: %d\n",
  42                 crypt_s390_func_available(KMC_TDEA_128_ENCRYPT));
  43         printk(KERN_INFO "KMC_TDEA_192: %d\n",
  44                 crypt_s390_func_available(KMC_TDEA_192_ENCRYPT));
  45
  46         /* query available KIMD fucntions */
  47         printk(KERN_INFO "KIMD_QUERY: %d\n",
  48                 crypt_s390_func_available(KIMD_QUERY));
  49         printk(KERN_INFO "KIMD_SHA_1: %d\n",
  50                 crypt_s390_func_available(KIMD_SHA_1));
  51
  52         /* query available KLMD functions */
  53         printk(KERN_INFO "KLMD_QUERY: %d\n",
  54                 crypt_s390_func_available(KLMD_QUERY));
  55         printk(KERN_INFO "KLMD_SHA_1: %d\n",
  56                 crypt_s390_func_available(KLMD_SHA_1));
  57
  58         /* query available KMAC functions */
  59         printk(KERN_INFO "KMAC_QUERY: %d\n",
  60                 crypt_s3990_func_available(KMAC_QUERY));
  61         printk(KERN_INFO "KMAC_DEA: %d\n",
  62                 crypt_s390_func_available(KMAC_DEA));
  63         printk(KERN_INFO "KMAC_TDEA_128: %d\n",
  64                 crypt_s390_func_available(KMAC_TDEA_128));
  65         printk(KERN_INFO "KMAC_TDEA_192: %d\n",
  66                 crypt_s390_func_available(KMAC_TDEA_192));
  67 }
  68
  69 static int init(void)
  70 {
  71         struct crypt_s390_query_status status = {
  72                 .high = 0,
  73                 .low = 0
  74         };
  75
  76         printk(KERN_INFO "crypt_s390: querying available crypto functions\n");
  77         crypt_s390_km(KM_QUERY, &status, NULL, NULL, 0);
  78         printk(KERN_INFO "KM:\t%016llx %016llx\n",
  79                         (unsigned long long) status.high,
  80                         (unsigned long long) status.low);
  81         status.high = status.low = 0;
  82         crypt_s390_kmc(KMC_QUERY, &status, NULL, NULL, 0);
  83         printk(KERN_INFO "KMC:\t%016llx %016llx\n",
  84                         (unsigned long long) status.high,
  85                         (unsigned long long) status.low);
  86         status.high = status.low = 0;
  87         crypt_s390_kimd(KIMD_QUERY, &status, NULL, 0);
  88         printk(KERN_INFO "KIMD:\t%016llx %016llx\n",
  89                         (unsigned long long) status.high,
  90                         (unsigned long long) status.low);
  91         status.high = status.low = 0;
  92         crypt_s390_klmd(KLMD_QUERY, &status, NULL, 0);
  93         printk(KERN_INFO "KLMD:\t%016llx %016llx\n",
  94                         (unsigned long long) status.high,
  95                         (unsigned long long) status.low);
  96         status.high = status.low = 0;
  97         crypt_s390_kmac(KMAC_QUERY, &status, NULL, 0);
  98         printk(KERN_INFO "KMAC:\t%016llx %016llx\n",
  99                         (unsigned long long) status.high,
 100                         (unsigned long long) status.low);
 101
 102         query_available_functions();
 103         return -ECANCELED;
 104 }
 105
 106 static void __exit cleanup(void)
 107 {
 108 }
 109
 110 module_init(init);
 111 module_exit(cleanup);
 112
 113 MODULE_LICENSE("GPL");