1 /* 2 * zcrypt 2.1.0 3 * 4 * Copyright IBM Corp. 2001, 2012 5 * Author(s): Robert Burroughs 6 * Eric Rossman (edrossma@us.ibm.com) 7 * Cornelia Huck <cornelia.huck@de.ibm.com> 8 * 9 * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com) 10 * Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com> 11 * Ralph Wuerthner <rwuerthn@de.ibm.com> 12 * MSGTYPE restruct: Holger Dengler <hd@linux.vnet.ibm.com> 13 * 14 * This program is free software; you can redistribute it and/or modify 15 * it under the terms of the GNU General Public License as published by 16 * the Free Software Foundation; either version 2, or (at your option) 17 * any later version. 18 * 19 * This program is distributed in the hope that it will be useful, 20 * but WITHOUT ANY WARRANTY; without even the implied warranty of 21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 22 * GNU General Public License for more details. 23 * 24 * You should have received a copy of the GNU General Public License 25 * along with this program; if not, write to the Free Software 26 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 27 */ 28 29 #ifndef _ZCRYPT_API_H_ 30 #define _ZCRYPT_API_H_ 31 32 #include <linux/atomic.h> 33 #include <asm/debug.h> 34 #include <asm/zcrypt.h> 35 #include "ap_bus.h" 36 37 /* deprecated status calls */ 38 #define ICAZ90STATUS _IOR(ZCRYPT_IOCTL_MAGIC, 0x10, struct ica_z90_status) 39 #define Z90STAT_PCIXCCCOUNT _IOR(ZCRYPT_IOCTL_MAGIC, 0x43, int) 40 41 /** 42 * This structure is deprecated and the corresponding ioctl() has been 43 * replaced with individual ioctl()s for each piece of data! 44 */ 45 struct ica_z90_status { 46 int totalcount; 47 int leedslitecount; // PCICA 48 int leeds2count; // PCICC 49 // int PCIXCCCount; is not in struct for backward compatibility 50 int requestqWaitCount; 51 int pendingqWaitCount; 52 int totalOpenCount; 53 int cryptoDomain; 54 // status: 0=not there, 1=PCICA, 2=PCICC, 3=PCIXCC_MCL2, 4=PCIXCC_MCL3, 55 // 5=CEX2C 56 unsigned char status[64]; 57 // qdepth: # work elements waiting for each device 58 unsigned char qdepth[64]; 59 }; 60 61 /** 62 * device type for an actual device is either PCICA, PCICC, PCIXCC_MCL2, 63 * PCIXCC_MCL3, CEX2C, or CEX2A 64 * 65 * NOTE: PCIXCC_MCL3 refers to a PCIXCC with May 2004 version of Licensed 66 * Internal Code (LIC) (EC J12220 level 29). 67 * PCIXCC_MCL2 refers to any LIC before this level. 68 */ 69 #define ZCRYPT_PCICA 1 70 #define ZCRYPT_PCICC 2 71 #define ZCRYPT_PCIXCC_MCL2 3 72 #define ZCRYPT_PCIXCC_MCL3 4 73 #define ZCRYPT_CEX2C 5 74 #define ZCRYPT_CEX2A 6 75 #define ZCRYPT_CEX3C 7 76 #define ZCRYPT_CEX3A 8 77 78 /** 79 * Large random numbers are pulled in 4096 byte chunks from the crypto cards 80 * and stored in a page. Be careful when increasing this buffer due to size 81 * limitations for AP requests. 82 */ 83 #define ZCRYPT_RNG_BUFFER_SIZE 4096 84 85 struct zcrypt_device; 86 87 struct zcrypt_ops { 88 long (*rsa_modexpo)(struct zcrypt_device *, struct ica_rsa_modexpo *); 89 long (*rsa_modexpo_crt)(struct zcrypt_device *, 90 struct ica_rsa_modexpo_crt *); 91 long (*send_cprb)(struct zcrypt_device *, struct ica_xcRB *); 92 long (*rng)(struct zcrypt_device *, char *); 93 struct list_head list; /* zcrypt ops list. */ 94 struct module *owner; 95 int variant; 96 }; 97 98 struct zcrypt_device { 99 struct list_head list; /* Device list. */ 100 spinlock_t lock; /* Per device lock. */ 101 struct kref refcount; /* device refcounting */ 102 struct ap_device *ap_dev; /* The "real" ap device. */ 103 struct zcrypt_ops *ops; /* Crypto operations. */ 104 int online; /* User online/offline */ 105 106 int user_space_type; /* User space device id. */ 107 char *type_string; /* User space device name. */ 108 int min_mod_size; /* Min number of bits. */ 109 int max_mod_size; /* Max number of bits. */ 110 int short_crt; /* Card has crt length restriction. */ 111 int speed_rating; /* Speed of the crypto device. */ 112 113 int request_count; /* # current requests. */ 114 115 struct ap_message reply; /* Per-device reply structure. */ 116 int max_exp_bit_length; 117 118 debug_info_t *dbf_area; /* debugging */ 119 }; 120 121 /* transport layer rescanning */ 122 extern atomic_t zcrypt_rescan_req; 123 124 struct zcrypt_device *zcrypt_device_alloc(size_t); 125 void zcrypt_device_free(struct zcrypt_device *); 126 void zcrypt_device_get(struct zcrypt_device *); 127 int zcrypt_device_put(struct zcrypt_device *); 128 int zcrypt_device_register(struct zcrypt_device *); 129 void zcrypt_device_unregister(struct zcrypt_device *); 130 void zcrypt_msgtype_register(struct zcrypt_ops *); 131 void zcrypt_msgtype_unregister(struct zcrypt_ops *); 132 struct zcrypt_ops *zcrypt_msgtype_request(unsigned char *, int); 133 void zcrypt_msgtype_release(struct zcrypt_ops *); 134 int zcrypt_api_init(void); 135 void zcrypt_api_exit(void); 136 137 #endif /* _ZCRYPT_API_H_ */ 138