150 lines
4.9 KiB
C
150 lines
4.9 KiB
C
/*
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* linux/drivers/s390/crypto/zcrypt_api.h
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*
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* zcrypt 2.1.0
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*
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* Copyright (C) 2001, 2006 IBM Corporation
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* Author(s): Robert Burroughs
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* Eric Rossman (edrossma@us.ibm.com)
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* Cornelia Huck <cornelia.huck@de.ibm.com>
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*
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* Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
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* Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com>
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* Ralph Wuerthner <rwuerthn@de.ibm.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef _ZCRYPT_API_H_
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#define _ZCRYPT_API_H_
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/**
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* Macro definitions
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*
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* PDEBUG debugs in the form "zcrypt: function_name -> message"
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*
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* PRINTK is like PDEBUG, except that it is always enabled
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* PRINTKN is like PRINTK, except that it does not include the function name
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* PRINTKW is like PRINTK, except that it uses KERN_WARNING
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* PRINTKC is like PRINTK, except that it uses KERN_CRIT
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*/
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#define DEV_NAME "zcrypt"
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#define PRINTK(fmt, args...) \
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printk(KERN_DEBUG DEV_NAME ": %s -> " fmt, __func__ , ## args)
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#define PRINTKN(fmt, args...) \
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printk(KERN_DEBUG DEV_NAME ": " fmt, ## args)
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#define PRINTKW(fmt, args...) \
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printk(KERN_WARNING DEV_NAME ": %s -> " fmt, __func__ , ## args)
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#define PRINTKC(fmt, args...) \
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printk(KERN_CRIT DEV_NAME ": %s -> " fmt, __func__ , ## args)
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#ifdef ZCRYPT_DEBUG
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#define PDEBUG(fmt, args...) \
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printk(KERN_DEBUG DEV_NAME ": %s -> " fmt, __func__ , ## args)
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#else
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#define PDEBUG(fmt, args...) do {} while (0)
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#endif
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#include "ap_bus.h"
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#include <asm/zcrypt.h>
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/* deprecated status calls */
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#define ICAZ90STATUS _IOR(ZCRYPT_IOCTL_MAGIC, 0x10, struct ica_z90_status)
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#define Z90STAT_PCIXCCCOUNT _IOR(ZCRYPT_IOCTL_MAGIC, 0x43, int)
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/**
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* This structure is deprecated and the corresponding ioctl() has been
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* replaced with individual ioctl()s for each piece of data!
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*/
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struct ica_z90_status {
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int totalcount;
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int leedslitecount; // PCICA
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int leeds2count; // PCICC
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// int PCIXCCCount; is not in struct for backward compatibility
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int requestqWaitCount;
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int pendingqWaitCount;
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int totalOpenCount;
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int cryptoDomain;
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// status: 0=not there, 1=PCICA, 2=PCICC, 3=PCIXCC_MCL2, 4=PCIXCC_MCL3,
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// 5=CEX2C
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unsigned char status[64];
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// qdepth: # work elements waiting for each device
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unsigned char qdepth[64];
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};
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/**
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* device type for an actual device is either PCICA, PCICC, PCIXCC_MCL2,
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* PCIXCC_MCL3, CEX2C, or CEX2A
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*
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* NOTE: PCIXCC_MCL3 refers to a PCIXCC with May 2004 version of Licensed
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* Internal Code (LIC) (EC J12220 level 29).
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* PCIXCC_MCL2 refers to any LIC before this level.
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*/
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#define ZCRYPT_PCICA 1
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#define ZCRYPT_PCICC 2
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#define ZCRYPT_PCIXCC_MCL2 3
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#define ZCRYPT_PCIXCC_MCL3 4
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#define ZCRYPT_CEX2C 5
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#define ZCRYPT_CEX2A 6
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/**
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* Large random numbers are pulled in 4096 byte chunks from the crypto cards
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* and stored in a page. Be carefull when increasing this buffer due to size
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* limitations for AP requests.
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*/
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#define ZCRYPT_RNG_BUFFER_SIZE 4096
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struct zcrypt_device;
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struct zcrypt_ops {
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long (*rsa_modexpo)(struct zcrypt_device *, struct ica_rsa_modexpo *);
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long (*rsa_modexpo_crt)(struct zcrypt_device *,
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struct ica_rsa_modexpo_crt *);
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long (*send_cprb)(struct zcrypt_device *, struct ica_xcRB *);
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long (*rng)(struct zcrypt_device *, char *);
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};
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struct zcrypt_device {
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struct list_head list; /* Device list. */
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spinlock_t lock; /* Per device lock. */
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struct kref refcount; /* device refcounting */
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struct ap_device *ap_dev; /* The "real" ap device. */
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struct zcrypt_ops *ops; /* Crypto operations. */
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int online; /* User online/offline */
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int user_space_type; /* User space device id. */
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char *type_string; /* User space device name. */
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int min_mod_size; /* Min number of bits. */
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int max_mod_size; /* Max number of bits. */
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int short_crt; /* Card has crt length restriction. */
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int speed_rating; /* Speed of the crypto device. */
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int request_count; /* # current requests. */
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struct ap_message reply; /* Per-device reply structure. */
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};
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struct zcrypt_device *zcrypt_device_alloc(size_t);
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void zcrypt_device_free(struct zcrypt_device *);
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void zcrypt_device_get(struct zcrypt_device *);
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int zcrypt_device_put(struct zcrypt_device *);
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int zcrypt_device_register(struct zcrypt_device *);
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void zcrypt_device_unregister(struct zcrypt_device *);
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int zcrypt_api_init(void);
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void zcrypt_api_exit(void);
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#endif /* _ZCRYPT_API_H_ */
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