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2dbc2418 MS |
1 | /* |
2 | * linux/drivers/s390/crypto/zcrypt_api.h | |
3 | * | |
5432114b | 4 | * zcrypt 2.1.0 |
2dbc2418 MS |
5 | * |
6 | * Copyright (C) 2001, 2006 IBM Corporation | |
7 | * Author(s): Robert Burroughs | |
8 | * Eric Rossman (edrossma@us.ibm.com) | |
9 | * Cornelia Huck <cornelia.huck@de.ibm.com> | |
10 | * | |
11 | * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com) | |
12 | * Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com> | |
13 | * Ralph Wuerthner <rwuerthn@de.ibm.com> | |
14 | * | |
15 | * This program is free software; you can redistribute it and/or modify | |
16 | * it under the terms of the GNU General Public License as published by | |
17 | * the Free Software Foundation; either version 2, or (at your option) | |
18 | * any later version. | |
19 | * | |
20 | * This program is distributed in the hope that it will be useful, | |
21 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
22 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
23 | * GNU General Public License for more details. | |
24 | * | |
25 | * You should have received a copy of the GNU General Public License | |
26 | * along with this program; if not, write to the Free Software | |
27 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
28 | */ | |
29 | ||
30 | #ifndef _ZCRYPT_API_H_ | |
31 | #define _ZCRYPT_API_H_ | |
32 | ||
2dbc2418 MS |
33 | #include "ap_bus.h" |
34 | #include <asm/zcrypt.h> | |
35 | ||
36 | /* deprecated status calls */ | |
37 | #define ICAZ90STATUS _IOR(ZCRYPT_IOCTL_MAGIC, 0x10, struct ica_z90_status) | |
38 | #define Z90STAT_PCIXCCCOUNT _IOR(ZCRYPT_IOCTL_MAGIC, 0x43, int) | |
39 | ||
40 | /** | |
41 | * This structure is deprecated and the corresponding ioctl() has been | |
42 | * replaced with individual ioctl()s for each piece of data! | |
43 | */ | |
44 | struct ica_z90_status { | |
45 | int totalcount; | |
46 | int leedslitecount; // PCICA | |
47 | int leeds2count; // PCICC | |
48 | // int PCIXCCCount; is not in struct for backward compatibility | |
49 | int requestqWaitCount; | |
50 | int pendingqWaitCount; | |
51 | int totalOpenCount; | |
52 | int cryptoDomain; | |
53 | // status: 0=not there, 1=PCICA, 2=PCICC, 3=PCIXCC_MCL2, 4=PCIXCC_MCL3, | |
54 | // 5=CEX2C | |
55 | unsigned char status[64]; | |
56 | // qdepth: # work elements waiting for each device | |
57 | unsigned char qdepth[64]; | |
58 | }; | |
59 | ||
60 | /** | |
61 | * device type for an actual device is either PCICA, PCICC, PCIXCC_MCL2, | |
62 | * PCIXCC_MCL3, CEX2C, or CEX2A | |
63 | * | |
64 | * NOTE: PCIXCC_MCL3 refers to a PCIXCC with May 2004 version of Licensed | |
65 | * Internal Code (LIC) (EC J12220 level 29). | |
66 | * PCIXCC_MCL2 refers to any LIC before this level. | |
67 | */ | |
68 | #define ZCRYPT_PCICA 1 | |
69 | #define ZCRYPT_PCICC 2 | |
70 | #define ZCRYPT_PCIXCC_MCL2 3 | |
71 | #define ZCRYPT_PCIXCC_MCL3 4 | |
72 | #define ZCRYPT_CEX2C 5 | |
73 | #define ZCRYPT_CEX2A 6 | |
74 | ||
2f7c8bd6 RW |
75 | /** |
76 | * Large random numbers are pulled in 4096 byte chunks from the crypto cards | |
77 | * and stored in a page. Be carefull when increasing this buffer due to size | |
78 | * limitations for AP requests. | |
79 | */ | |
80 | #define ZCRYPT_RNG_BUFFER_SIZE 4096 | |
81 | ||
2dbc2418 MS |
82 | struct zcrypt_device; |
83 | ||
84 | struct zcrypt_ops { | |
85 | long (*rsa_modexpo)(struct zcrypt_device *, struct ica_rsa_modexpo *); | |
86 | long (*rsa_modexpo_crt)(struct zcrypt_device *, | |
87 | struct ica_rsa_modexpo_crt *); | |
5432114b | 88 | long (*send_cprb)(struct zcrypt_device *, struct ica_xcRB *); |
2f7c8bd6 | 89 | long (*rng)(struct zcrypt_device *, char *); |
2dbc2418 MS |
90 | }; |
91 | ||
92 | struct zcrypt_device { | |
93 | struct list_head list; /* Device list. */ | |
94 | spinlock_t lock; /* Per device lock. */ | |
95 | struct kref refcount; /* device refcounting */ | |
96 | struct ap_device *ap_dev; /* The "real" ap device. */ | |
97 | struct zcrypt_ops *ops; /* Crypto operations. */ | |
98 | int online; /* User online/offline */ | |
99 | ||
100 | int user_space_type; /* User space device id. */ | |
101 | char *type_string; /* User space device name. */ | |
102 | int min_mod_size; /* Min number of bits. */ | |
103 | int max_mod_size; /* Max number of bits. */ | |
104 | int short_crt; /* Card has crt length restriction. */ | |
105 | int speed_rating; /* Speed of the crypto device. */ | |
106 | ||
107 | int request_count; /* # current requests. */ | |
108 | ||
109 | struct ap_message reply; /* Per-device reply structure. */ | |
110 | }; | |
111 | ||
112 | struct zcrypt_device *zcrypt_device_alloc(size_t); | |
113 | void zcrypt_device_free(struct zcrypt_device *); | |
114 | void zcrypt_device_get(struct zcrypt_device *); | |
115 | int zcrypt_device_put(struct zcrypt_device *); | |
116 | int zcrypt_device_register(struct zcrypt_device *); | |
117 | void zcrypt_device_unregister(struct zcrypt_device *); | |
118 | int zcrypt_api_init(void); | |
119 | void zcrypt_api_exit(void); | |
120 | ||
121 | #endif /* _ZCRYPT_API_H_ */ |