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gerrit-public.fairphone.software / kernel / msm-5.4 / 2f7c8bd6dc6540aa3275c0ad9f657401985c00e9 / . / drivers / s390 / crypto / zcrypt_api.h
blob: 0e948528a73a8ba0b9276b454acfbb8421ec8013 [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
33/**
34 * Macro definitions
35 *
36 * PDEBUG debugs in the form "zcrypt: function_name -> message"
37 *
38 * PRINTK is like PDEBUG, except that it is always enabled
39 * PRINTKN is like PRINTK, except that it does not include the function name
40 * PRINTKW is like PRINTK, except that it uses KERN_WARNING
41 * PRINTKC is like PRINTK, except that it uses KERN_CRIT
42 */
43#define DEV_NAME "zcrypt"
44
45#define PRINTK(fmt, args...) \
46 printk(KERN_DEBUG DEV_NAME ": %s -> " fmt, __FUNCTION__ , ## args)
47#define PRINTKN(fmt, args...) \
48 printk(KERN_DEBUG DEV_NAME ": " fmt, ## args)
49#define PRINTKW(fmt, args...) \
50 printk(KERN_WARNING DEV_NAME ": %s -> " fmt, __FUNCTION__ , ## args)
51#define PRINTKC(fmt, args...) \
52 printk(KERN_CRIT DEV_NAME ": %s -> " fmt, __FUNCTION__ , ## args)
53
54#ifdef ZCRYPT_DEBUG
55#define PDEBUG(fmt, args...) \
56 printk(KERN_DEBUG DEV_NAME ": %s -> " fmt, __FUNCTION__ , ## args)
57#else
58#define PDEBUG(fmt, args...) do {} while (0)
59#endif
60
61#include "ap_bus.h"
62#include <asm/zcrypt.h>
63
64/* deprecated status calls */
65#define ICAZ90STATUS _IOR(ZCRYPT_IOCTL_MAGIC, 0x10, struct ica_z90_status)
66#define Z90STAT_PCIXCCCOUNT _IOR(ZCRYPT_IOCTL_MAGIC, 0x43, int)
67
68/**
69 * This structure is deprecated and the corresponding ioctl() has been
70 * replaced with individual ioctl()s for each piece of data!
71 */
72struct ica_z90_status {
73 int totalcount;
74 int leedslitecount; // PCICA
75 int leeds2count; // PCICC
76 // int PCIXCCCount; is not in struct for backward compatibility
77 int requestqWaitCount;
78 int pendingqWaitCount;
79 int totalOpenCount;
80 int cryptoDomain;
81 // status: 0=not there, 1=PCICA, 2=PCICC, 3=PCIXCC_MCL2, 4=PCIXCC_MCL3,
82 // 5=CEX2C
83 unsigned char status[64];
84 // qdepth: # work elements waiting for each device
85 unsigned char qdepth[64];
86};
87
88/**
89 * device type for an actual device is either PCICA, PCICC, PCIXCC_MCL2,
90 * PCIXCC_MCL3, CEX2C, or CEX2A
91 *
92 * NOTE: PCIXCC_MCL3 refers to a PCIXCC with May 2004 version of Licensed
93 * Internal Code (LIC) (EC J12220 level 29).
94 * PCIXCC_MCL2 refers to any LIC before this level.
95 */
96#define ZCRYPT_PCICA 1
97#define ZCRYPT_PCICC 2
98#define ZCRYPT_PCIXCC_MCL2 3
99#define ZCRYPT_PCIXCC_MCL3 4
100#define ZCRYPT_CEX2C 5
101#define ZCRYPT_CEX2A 6
102
Ralph Wuerthner2f7c8bd2008-04-17 07:46:15 +0200[diff] [blame^]103/**
104 * Large random numbers are pulled in 4096 byte chunks from the crypto cards
105 * and stored in a page. Be carefull when increasing this buffer due to size
106 * limitations for AP requests.
107 */
108#define ZCRYPT_RNG_BUFFER_SIZE 4096
109
Martin Schwidefsky2dbc2412006-09-20 15:58:27 +0200[diff] [blame]110struct zcrypt_device;
111
112struct zcrypt_ops {
113 long (*rsa_modexpo)(struct zcrypt_device *, struct ica_rsa_modexpo *);
114 long (*rsa_modexpo_crt)(struct zcrypt_device *,
115 struct ica_rsa_modexpo_crt *);
Ralph Wuerthner54321142006-09-20 15:58:36 +0200[diff] [blame]116 long (*send_cprb)(struct zcrypt_device *, struct ica_xcRB *);
Ralph Wuerthner2f7c8bd2008-04-17 07:46:15 +0200[diff] [blame^]117 long (*rng)(struct zcrypt_device *, char *);
Martin Schwidefsky2dbc2412006-09-20 15:58:27 +0200[diff] [blame]118};
119
120struct zcrypt_device {
121 struct list_head list; /* Device list. */
122 spinlock_t lock; /* Per device lock. */
123 struct kref refcount; /* device refcounting */
124 struct ap_device *ap_dev; /* The "real" ap device. */
125 struct zcrypt_ops *ops; /* Crypto operations. */
126 int online; /* User online/offline */
127
128 int user_space_type; /* User space device id. */
129 char *type_string; /* User space device name. */
130 int min_mod_size; /* Min number of bits. */
131 int max_mod_size; /* Max number of bits. */
132 int short_crt; /* Card has crt length restriction. */
133 int speed_rating; /* Speed of the crypto device. */
134
135 int request_count; /* # current requests. */
136
137 struct ap_message reply; /* Per-device reply structure. */
138};
139
140struct zcrypt_device *zcrypt_device_alloc(size_t);
141void zcrypt_device_free(struct zcrypt_device *);
142void zcrypt_device_get(struct zcrypt_device *);
143int zcrypt_device_put(struct zcrypt_device *);
144int zcrypt_device_register(struct zcrypt_device *);
145void zcrypt_device_unregister(struct zcrypt_device *);
146int zcrypt_api_init(void);
147void zcrypt_api_exit(void);
148
149#endif /* _ZCRYPT_API_H_ */