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gerrit-public.fairphone.software / kernel / msm-4.9 / ea49f8ffae6262e8de9a0d3e9fcdd384156c7e05 / . / drivers / s390 / crypto / zcrypt_api.h
blob: 8e7ffbf2466cd2cf6c435e70f824f77e74c21143 [file] [log] [blame]
Martin Schwidefsky2dbc2412006-09-20 15:58:27 +0200[diff] [blame]1/*
2 * linux/drivers/s390/crypto/zcrypt_api.h
3 *
Ralph Wuerthner54321142006-09-20 15:58:36 +0200[diff] [blame]4 * zcrypt 2.1.0
Martin Schwidefsky2dbc2412006-09-20 15:58:27 +0200[diff] [blame]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
Martin Schwidefsky2dbc2412006-09-20 15:58:27 +0200[diff] [blame]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 */
44struct 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
Felix Beck8e89b6b2009-12-07 12:51:57 +0100[diff] [blame]74#define ZCRYPT_CEX3C 7
75#define ZCRYPT_CEX3A 8
Martin Schwidefsky2dbc2412006-09-20 15:58:27 +0200[diff] [blame]76
Ralph Wuerthner2f7c8bd2008-04-17 07:46:15 +0200[diff] [blame]77/**
78 * Large random numbers are pulled in 4096 byte chunks from the crypto cards
79 * and stored in a page. Be carefull when increasing this buffer due to size
80 * limitations for AP requests.
81 */
82#define ZCRYPT_RNG_BUFFER_SIZE 4096
83
Martin Schwidefsky2dbc2412006-09-20 15:58:27 +0200[diff] [blame]84struct zcrypt_device;
85
86struct zcrypt_ops {
87 long (*rsa_modexpo)(struct zcrypt_device *, struct ica_rsa_modexpo *);
88 long (*rsa_modexpo_crt)(struct zcrypt_device *,
89 struct ica_rsa_modexpo_crt *);
Ralph Wuerthner54321142006-09-20 15:58:36 +0200[diff] [blame]90 long (*send_cprb)(struct zcrypt_device *, struct ica_xcRB *);
Ralph Wuerthner2f7c8bd2008-04-17 07:46:15 +0200[diff] [blame]91 long (*rng)(struct zcrypt_device *, char *);
Martin Schwidefsky2dbc2412006-09-20 15:58:27 +0200[diff] [blame]92};
93
94struct zcrypt_device {
95 struct list_head list; /* Device list. */
96 spinlock_t lock; /* Per device lock. */
97 struct kref refcount; /* device refcounting */
98 struct ap_device *ap_dev; /* The "real" ap device. */
99 struct zcrypt_ops *ops; /* Crypto operations. */
100 int online; /* User online/offline */
101
102 int user_space_type; /* User space device id. */
103 char *type_string; /* User space device name. */
104 int min_mod_size; /* Min number of bits. */
105 int max_mod_size; /* Max number of bits. */
106 int short_crt; /* Card has crt length restriction. */
107 int speed_rating; /* Speed of the crypto device. */
108
109 int request_count; /* # current requests. */
110
111 struct ap_message reply; /* Per-device reply structure. */
112};
113
114struct zcrypt_device *zcrypt_device_alloc(size_t);
115void zcrypt_device_free(struct zcrypt_device *);
116void zcrypt_device_get(struct zcrypt_device *);
117int zcrypt_device_put(struct zcrypt_device *);
118int zcrypt_device_register(struct zcrypt_device *);
119void zcrypt_device_unregister(struct zcrypt_device *);
120int zcrypt_api_init(void);
121void zcrypt_api_exit(void);
122
123#endif /* _ZCRYPT_API_H_ */