1/*
  2 *  linux/drivers/s390/crypto/zcrypt_pcica.h
  3 *
  4 *  zcrypt 2.1.0
  5 *
  6 *  Copyright (C)  2001, 2006 IBM Corporation
  7 *  Author(s): Robert Burroughs
  8 *	       Eric Rossman (edrossma@us.ibm.com)
  9 *
 10 *  Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
 11 *  Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com>
 12 *
 13 * This program is free software; you can redistribute it and/or modify
 14 * it under the terms of the GNU General Public License as published by
 15 * the Free Software Foundation; either version 2, or (at your option)
 16 * any later version.
 17 *
 18 * This program is distributed in the hope that it will be useful,
 19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 21 * GNU General Public License for more details.
 22 *
 23 * You should have received a copy of the GNU General Public License
 24 * along with this program; if not, write to the Free Software
 25 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 26 */
 27
 28#ifndef _ZCRYPT_PCICA_H_
 29#define _ZCRYPT_PCICA_H_
 30
 31/**
 32 * The type 4 message family is associated with a PCICA card.
 33 *
 34 * The four members of the family are described below.
 35 *
 36 * Note that all unsigned char arrays are right-justified and left-padded
 37 * with zeroes.
 38 *
 39 * Note that all reserved fields must be zeroes.
 40 */
 41struct type4_hdr {
 42	unsigned char  reserved1;
 43	unsigned char  msg_type_code;	/* 0x04 */
 44	unsigned short msg_len;
 45	unsigned char  request_code;	/* 0x40 */
 46	unsigned char  msg_fmt;
 47	unsigned short reserved2;
 48} __attribute__((packed));
 49
 50#define TYPE4_TYPE_CODE 0x04
 51#define TYPE4_REQU_CODE 0x40
 52
 53#define TYPE4_SME_FMT 0x00
 54#define TYPE4_LME_FMT 0x10
 55#define TYPE4_SCR_FMT 0x40
 56#define TYPE4_LCR_FMT 0x50
 57
 58/* Mod-Exp, with a small modulus */
 59struct type4_sme {
 60	struct type4_hdr header;
 61	unsigned char	 message[128];
 62	unsigned char	 exponent[128];
 63	unsigned char	 modulus[128];
 64} __attribute__((packed));
 65
 66/* Mod-Exp, with a large modulus */
 67struct type4_lme {
 68	struct type4_hdr header;
 69	unsigned char	 message[256];
 70	unsigned char	 exponent[256];
 71	unsigned char	 modulus[256];
 72} __attribute__((packed));
 73
 74/* CRT, with a small modulus */
 75struct type4_scr {
 76	struct type4_hdr header;
 77	unsigned char	 message[128];
 78	unsigned char	 dp[72];
 79	unsigned char	 dq[64];
 80	unsigned char	 p[72];
 81	unsigned char	 q[64];
 82	unsigned char	 u[72];
 83} __attribute__((packed));
 84
 85/* CRT, with a large modulus */
 86struct type4_lcr {
 87	struct type4_hdr header;
 88	unsigned char	 message[256];
 89	unsigned char	 dp[136];
 90	unsigned char	 dq[128];
 91	unsigned char	 p[136];
 92	unsigned char	 q[128];
 93	unsigned char	 u[136];
 94} __attribute__((packed));
 95
 96/**
 97 * The type 84 response family is associated with a PCICA card.
 98 *
 99 * Note that all unsigned char arrays are right-justified and left-padded
100 * with zeroes.
101 *
102 * Note that all reserved fields must be zeroes.
103 */
104
105struct type84_hdr {
106	unsigned char  reserved1;
107	unsigned char  code;
108	unsigned short len;
109	unsigned char  reserved2[4];
110} __attribute__((packed));
111
112#define TYPE84_RSP_CODE 0x84
113
114int zcrypt_pcica_init(void);
115void zcrypt_pcica_exit(void);
116
117#endif /* _ZCRYPT_PCICA_H_ */