mirror of https://gitee.com/openkylin/linux.git
[S390] zcrypt CEX2A, CEX2C, PCICA accelerator card ap bus drivers.
Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Martin Schwidefsky
parent
2dbc2418ba
commit
963ed931c3
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@ -0,0 +1,435 @@
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/*
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* linux/drivers/s390/crypto/zcrypt_cex2a.c
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*
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* zcrypt 2.0.0
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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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*
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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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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/err.h>
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#include <asm/atomic.h>
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#include <asm/uaccess.h>
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#include "ap_bus.h"
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#include "zcrypt_api.h"
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#include "zcrypt_error.h"
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#include "zcrypt_cex2a.h"
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#define CEX2A_MIN_MOD_SIZE 1 /* 8 bits */
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#define CEX2A_MAX_MOD_SIZE 256 /* 2048 bits */
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#define CEX2A_SPEED_RATING 970
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#define CEX2A_MAX_MESSAGE_SIZE 0x390 /* sizeof(struct type50_crb2_msg) */
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#define CEX2A_MAX_RESPONSE_SIZE 0x110 /* max outputdatalength + type80_hdr */
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#define CEX2A_CLEANUP_TIME (15*HZ)
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static struct ap_device_id zcrypt_cex2a_ids[] = {
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{ AP_DEVICE(AP_DEVICE_TYPE_CEX2A) },
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{ /* end of list */ },
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};
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#ifndef CONFIG_ZCRYPT_MONOLITHIC
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MODULE_DEVICE_TABLE(ap, zcrypt_cex2a_ids);
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MODULE_AUTHOR("IBM Corporation");
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MODULE_DESCRIPTION("CEX2A Cryptographic Coprocessor device driver, "
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"Copyright 2001, 2006 IBM Corporation");
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MODULE_LICENSE("GPL");
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#endif
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static int zcrypt_cex2a_probe(struct ap_device *ap_dev);
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static void zcrypt_cex2a_remove(struct ap_device *ap_dev);
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static void zcrypt_cex2a_receive(struct ap_device *, struct ap_message *,
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struct ap_message *);
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static struct ap_driver zcrypt_cex2a_driver = {
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.probe = zcrypt_cex2a_probe,
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.remove = zcrypt_cex2a_remove,
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.receive = zcrypt_cex2a_receive,
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.ids = zcrypt_cex2a_ids,
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};
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/**
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* Convert a ICAMEX message to a type50 MEX message.
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*
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* @zdev: crypto device pointer
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* @zreq: crypto request pointer
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* @mex: pointer to user input data
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*
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* Returns 0 on success or -EFAULT.
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*/
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static int ICAMEX_msg_to_type50MEX_msg(struct zcrypt_device *zdev,
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struct ap_message *ap_msg,
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struct ica_rsa_modexpo *mex)
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{
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unsigned char *mod, *exp, *inp;
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int mod_len;
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mod_len = mex->inputdatalength;
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if (mod_len <= 128) {
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struct type50_meb1_msg *meb1 = ap_msg->message;
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memset(meb1, 0, sizeof(*meb1));
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ap_msg->length = sizeof(*meb1);
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meb1->header.msg_type_code = TYPE50_TYPE_CODE;
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meb1->header.msg_len = sizeof(*meb1);
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meb1->keyblock_type = TYPE50_MEB1_FMT;
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mod = meb1->modulus + sizeof(meb1->modulus) - mod_len;
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exp = meb1->exponent + sizeof(meb1->exponent) - mod_len;
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inp = meb1->message + sizeof(meb1->message) - mod_len;
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} else {
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struct type50_meb2_msg *meb2 = ap_msg->message;
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memset(meb2, 0, sizeof(*meb2));
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ap_msg->length = sizeof(*meb2);
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meb2->header.msg_type_code = TYPE50_TYPE_CODE;
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meb2->header.msg_len = sizeof(*meb2);
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meb2->keyblock_type = TYPE50_MEB2_FMT;
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mod = meb2->modulus + sizeof(meb2->modulus) - mod_len;
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exp = meb2->exponent + sizeof(meb2->exponent) - mod_len;
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inp = meb2->message + sizeof(meb2->message) - mod_len;
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}
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if (copy_from_user(mod, mex->n_modulus, mod_len) ||
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copy_from_user(exp, mex->b_key, mod_len) ||
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copy_from_user(inp, mex->inputdata, mod_len))
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return -EFAULT;
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return 0;
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}
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/**
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* Convert a ICACRT message to a type50 CRT message.
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*
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* @zdev: crypto device pointer
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* @zreq: crypto request pointer
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* @crt: pointer to user input data
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*
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* Returns 0 on success or -EFAULT.
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*/
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static int ICACRT_msg_to_type50CRT_msg(struct zcrypt_device *zdev,
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struct ap_message *ap_msg,
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struct ica_rsa_modexpo_crt *crt)
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{
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int mod_len, short_len, long_len, long_offset;
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unsigned char *p, *q, *dp, *dq, *u, *inp;
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mod_len = crt->inputdatalength;
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short_len = mod_len / 2;
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long_len = mod_len / 2 + 8;
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/*
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* CEX2A cannot handle p, dp, or U > 128 bytes.
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* If we have one of these, we need to do extra checking.
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*/
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if (long_len > 128) {
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/*
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* zcrypt_rsa_crt already checked for the leading
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* zeroes of np_prime, bp_key and u_mult_inc.
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*/
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long_offset = long_len - 128;
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long_len = 128;
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} else
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long_offset = 0;
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/*
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* Instead of doing extra work for p, dp, U > 64 bytes, we'll just use
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* the larger message structure.
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*/
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if (long_len <= 64) {
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struct type50_crb1_msg *crb1 = ap_msg->message;
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memset(crb1, 0, sizeof(*crb1));
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ap_msg->length = sizeof(*crb1);
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crb1->header.msg_type_code = TYPE50_TYPE_CODE;
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crb1->header.msg_len = sizeof(*crb1);
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crb1->keyblock_type = TYPE50_CRB1_FMT;
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p = crb1->p + sizeof(crb1->p) - long_len;
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q = crb1->q + sizeof(crb1->q) - short_len;
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dp = crb1->dp + sizeof(crb1->dp) - long_len;
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dq = crb1->dq + sizeof(crb1->dq) - short_len;
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u = crb1->u + sizeof(crb1->u) - long_len;
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inp = crb1->message + sizeof(crb1->message) - mod_len;
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} else {
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struct type50_crb2_msg *crb2 = ap_msg->message;
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memset(crb2, 0, sizeof(*crb2));
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ap_msg->length = sizeof(*crb2);
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crb2->header.msg_type_code = TYPE50_TYPE_CODE;
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crb2->header.msg_len = sizeof(*crb2);
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crb2->keyblock_type = TYPE50_CRB2_FMT;
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p = crb2->p + sizeof(crb2->p) - long_len;
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q = crb2->q + sizeof(crb2->q) - short_len;
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dp = crb2->dp + sizeof(crb2->dp) - long_len;
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dq = crb2->dq + sizeof(crb2->dq) - short_len;
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u = crb2->u + sizeof(crb2->u) - long_len;
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inp = crb2->message + sizeof(crb2->message) - mod_len;
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}
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if (copy_from_user(p, crt->np_prime + long_offset, long_len) ||
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copy_from_user(q, crt->nq_prime, short_len) ||
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copy_from_user(dp, crt->bp_key + long_offset, long_len) ||
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copy_from_user(dq, crt->bq_key, short_len) ||
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copy_from_user(u, crt->u_mult_inv + long_offset, long_len) ||
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copy_from_user(inp, crt->inputdata, mod_len))
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return -EFAULT;
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return 0;
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}
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/**
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* Copy results from a type 80 reply message back to user space.
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*
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* @zdev: crypto device pointer
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* @reply: reply AP message.
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* @data: pointer to user output data
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* @length: size of user output data
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*
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* Returns 0 on success or -EFAULT.
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*/
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static int convert_type80(struct zcrypt_device *zdev,
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struct ap_message *reply,
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char __user *outputdata,
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unsigned int outputdatalength)
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{
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struct type80_hdr *t80h = reply->message;
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unsigned char *data;
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if (t80h->len < sizeof(*t80h) + outputdatalength) {
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/* The result is too short, the CEX2A card may not do that.. */
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zdev->online = 0;
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return -EAGAIN; /* repeat the request on a different device. */
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}
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BUG_ON(t80h->len > CEX2A_MAX_RESPONSE_SIZE);
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data = reply->message + t80h->len - outputdatalength;
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if (copy_to_user(outputdata, data, outputdatalength))
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return -EFAULT;
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return 0;
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}
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static int convert_response(struct zcrypt_device *zdev,
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struct ap_message *reply,
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char __user *outputdata,
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unsigned int outputdatalength)
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{
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/* Response type byte is the second byte in the response. */
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switch (((unsigned char *) reply->message)[1]) {
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case TYPE82_RSP_CODE:
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case TYPE88_RSP_CODE:
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return convert_error(zdev, reply);
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case TYPE80_RSP_CODE:
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return convert_type80(zdev, reply,
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outputdata, outputdatalength);
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default: /* Unknown response type, this should NEVER EVER happen */
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PRINTK("Unrecognized Message Header: %08x%08x\n",
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*(unsigned int *) reply->message,
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*(unsigned int *) (reply->message+4));
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zdev->online = 0;
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return -EAGAIN; /* repeat the request on a different device. */
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}
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}
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/**
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* This function is called from the AP bus code after a crypto request
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* "msg" has finished with the reply message "reply".
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* It is called from tasklet context.
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* @ap_dev: pointer to the AP device
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* @msg: pointer to the AP message
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* @reply: pointer to the AP reply message
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*/
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static void zcrypt_cex2a_receive(struct ap_device *ap_dev,
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struct ap_message *msg,
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struct ap_message *reply)
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{
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static struct error_hdr error_reply = {
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.type = TYPE82_RSP_CODE,
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.reply_code = REP82_ERROR_MACHINE_FAILURE,
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};
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struct type80_hdr *t80h = reply->message;
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int length;
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/* Copy the reply message to the request message buffer. */
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if (IS_ERR(reply))
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memcpy(msg->message, &error_reply, sizeof(error_reply));
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else if (t80h->type == TYPE80_RSP_CODE) {
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length = min(CEX2A_MAX_RESPONSE_SIZE, (int) t80h->len);
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memcpy(msg->message, reply->message, length);
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} else
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memcpy(msg->message, reply->message, sizeof error_reply);
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complete((struct completion *) msg->private);
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}
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static atomic_t zcrypt_step = ATOMIC_INIT(0);
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/**
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* The request distributor calls this function if it picked the CEX2A
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* device to handle a modexpo request.
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* @zdev: pointer to zcrypt_device structure that identifies the
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* CEX2A device to the request distributor
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* @mex: pointer to the modexpo request buffer
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*/
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static long zcrypt_cex2a_modexpo(struct zcrypt_device *zdev,
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struct ica_rsa_modexpo *mex)
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{
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struct ap_message ap_msg;
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struct completion work;
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int rc;
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ap_msg.message = (void *) kmalloc(CEX2A_MAX_MESSAGE_SIZE, GFP_KERNEL);
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if (!ap_msg.message)
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return -ENOMEM;
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ap_msg.psmid = (((unsigned long long) current->pid) << 32) +
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atomic_inc_return(&zcrypt_step);
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ap_msg.private = &work;
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rc = ICAMEX_msg_to_type50MEX_msg(zdev, &ap_msg, mex);
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if (rc)
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goto out_free;
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init_completion(&work);
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ap_queue_message(zdev->ap_dev, &ap_msg);
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rc = wait_for_completion_interruptible_timeout(
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&work, CEX2A_CLEANUP_TIME);
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if (rc > 0)
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rc = convert_response(zdev, &ap_msg, mex->outputdata,
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mex->outputdatalength);
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else {
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/* Signal pending or message timed out. */
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ap_cancel_message(zdev->ap_dev, &ap_msg);
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if (rc == 0)
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/* Message timed out. */
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rc = -ETIME;
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}
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out_free:
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kfree(ap_msg.message);
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return rc;
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}
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/**
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* The request distributor calls this function if it picked the CEX2A
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* device to handle a modexpo_crt request.
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* @zdev: pointer to zcrypt_device structure that identifies the
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* CEX2A device to the request distributor
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* @crt: pointer to the modexpoc_crt request buffer
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*/
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static long zcrypt_cex2a_modexpo_crt(struct zcrypt_device *zdev,
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struct ica_rsa_modexpo_crt *crt)
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{
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struct ap_message ap_msg;
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struct completion work;
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int rc;
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ap_msg.message = (void *) kmalloc(CEX2A_MAX_MESSAGE_SIZE, GFP_KERNEL);
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if (!ap_msg.message)
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return -ENOMEM;
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ap_msg.psmid = (((unsigned long long) current->pid) << 32) +
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atomic_inc_return(&zcrypt_step);
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ap_msg.private = &work;
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rc = ICACRT_msg_to_type50CRT_msg(zdev, &ap_msg, crt);
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if (rc)
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goto out_free;
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init_completion(&work);
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ap_queue_message(zdev->ap_dev, &ap_msg);
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rc = wait_for_completion_interruptible_timeout(
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&work, CEX2A_CLEANUP_TIME);
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if (rc > 0)
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rc = convert_response(zdev, &ap_msg, crt->outputdata,
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crt->outputdatalength);
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else {
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/* Signal pending or message timed out. */
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ap_cancel_message(zdev->ap_dev, &ap_msg);
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if (rc == 0)
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/* Message timed out. */
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rc = -ETIME;
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}
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out_free:
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kfree(ap_msg.message);
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return rc;
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}
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/**
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* The crypto operations for a CEX2A card.
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*/
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static struct zcrypt_ops zcrypt_cex2a_ops = {
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.rsa_modexpo = zcrypt_cex2a_modexpo,
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.rsa_modexpo_crt = zcrypt_cex2a_modexpo_crt,
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};
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/**
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* Probe function for CEX2A cards. It always accepts the AP device
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* since the bus_match already checked the hardware type.
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* @ap_dev: pointer to the AP device.
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*/
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static int zcrypt_cex2a_probe(struct ap_device *ap_dev)
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{
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struct zcrypt_device *zdev;
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int rc;
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zdev = zcrypt_device_alloc(CEX2A_MAX_RESPONSE_SIZE);
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if (!zdev)
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return -ENOMEM;
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zdev->ap_dev = ap_dev;
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zdev->ops = &zcrypt_cex2a_ops;
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zdev->online = 1;
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zdev->user_space_type = ZCRYPT_CEX2A;
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zdev->type_string = "CEX2A";
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zdev->min_mod_size = CEX2A_MIN_MOD_SIZE;
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zdev->max_mod_size = CEX2A_MAX_MOD_SIZE;
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zdev->short_crt = 1;
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zdev->speed_rating = CEX2A_SPEED_RATING;
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ap_dev->reply = &zdev->reply;
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ap_dev->private = zdev;
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rc = zcrypt_device_register(zdev);
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if (rc)
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goto out_free;
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return 0;
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out_free:
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ap_dev->private = NULL;
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zcrypt_device_free(zdev);
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return rc;
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}
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|
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/**
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* This is called to remove the extended CEX2A driver information
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* if an AP device is removed.
|
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*/
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static void zcrypt_cex2a_remove(struct ap_device *ap_dev)
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{
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struct zcrypt_device *zdev = ap_dev->private;
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zcrypt_device_unregister(zdev);
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}
|
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int __init zcrypt_cex2a_init(void)
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{
|
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return ap_driver_register(&zcrypt_cex2a_driver, THIS_MODULE, "cex2a");
|
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}
|
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|
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void __exit zcrypt_cex2a_exit(void)
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{
|
||||
ap_driver_unregister(&zcrypt_cex2a_driver);
|
||||
}
|
||||
|
||||
#ifndef CONFIG_ZCRYPT_MONOLITHIC
|
||||
module_init(zcrypt_cex2a_init);
|
||||
module_exit(zcrypt_cex2a_exit);
|
||||
#endif
|
||||
|
|
@ -0,0 +1,126 @@
|
|||
/*
|
||||
* linux/drivers/s390/crypto/zcrypt_cex2a.h
|
||||
*
|
||||
* zcrypt 2.0.0
|
||||
*
|
||||
* Copyright (C) 2001, 2006 IBM Corporation
|
||||
* Author(s): Robert Burroughs
|
||||
* Eric Rossman (edrossma@us.ibm.com)
|
||||
*
|
||||
* Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
|
||||
* Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2, or (at your option)
|
||||
* any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
*/
|
||||
|
||||
#ifndef _ZCRYPT_CEX2A_H_
|
||||
#define _ZCRYPT_CEX2A_H_
|
||||
|
||||
/**
|
||||
* The type 50 message family is associated with a CEX2A card.
|
||||
*
|
||||
* The four members of the family are described below.
|
||||
*
|
||||
* Note that all unsigned char arrays are right-justified and left-padded
|
||||
* with zeroes.
|
||||
*
|
||||
* Note that all reserved fields must be zeroes.
|
||||
*/
|
||||
struct type50_hdr {
|
||||
unsigned char reserved1;
|
||||
unsigned char msg_type_code; /* 0x50 */
|
||||
unsigned short msg_len;
|
||||
unsigned char reserved2;
|
||||
unsigned char ignored;
|
||||
unsigned short reserved3;
|
||||
} __attribute__((packed));
|
||||
|
||||
#define TYPE50_TYPE_CODE 0x50
|
||||
|
||||
#define TYPE50_MEB1_FMT 0x0001
|
||||
#define TYPE50_MEB2_FMT 0x0002
|
||||
#define TYPE50_CRB1_FMT 0x0011
|
||||
#define TYPE50_CRB2_FMT 0x0012
|
||||
|
||||
/* Mod-Exp, with a small modulus */
|
||||
struct type50_meb1_msg {
|
||||
struct type50_hdr header;
|
||||
unsigned short keyblock_type; /* 0x0001 */
|
||||
unsigned char reserved[6];
|
||||
unsigned char exponent[128];
|
||||
unsigned char modulus[128];
|
||||
unsigned char message[128];
|
||||
} __attribute__((packed));
|
||||
|
||||
/* Mod-Exp, with a large modulus */
|
||||
struct type50_meb2_msg {
|
||||
struct type50_hdr header;
|
||||
unsigned short keyblock_type; /* 0x0002 */
|
||||
unsigned char reserved[6];
|
||||
unsigned char exponent[256];
|
||||
unsigned char modulus[256];
|
||||
unsigned char message[256];
|
||||
} __attribute__((packed));
|
||||
|
||||
/* CRT, with a small modulus */
|
||||
struct type50_crb1_msg {
|
||||
struct type50_hdr header;
|
||||
unsigned short keyblock_type; /* 0x0011 */
|
||||
unsigned char reserved[6];
|
||||
unsigned char p[64];
|
||||
unsigned char q[64];
|
||||
unsigned char dp[64];
|
||||
unsigned char dq[64];
|
||||
unsigned char u[64];
|
||||
unsigned char message[128];
|
||||
} __attribute__((packed));
|
||||
|
||||
/* CRT, with a large modulus */
|
||||
struct type50_crb2_msg {
|
||||
struct type50_hdr header;
|
||||
unsigned short keyblock_type; /* 0x0012 */
|
||||
unsigned char reserved[6];
|
||||
unsigned char p[128];
|
||||
unsigned char q[128];
|
||||
unsigned char dp[128];
|
||||
unsigned char dq[128];
|
||||
unsigned char u[128];
|
||||
unsigned char message[256];
|
||||
} __attribute__((packed));
|
||||
|
||||
/**
|
||||
* The type 80 response family is associated with a CEX2A card.
|
||||
*
|
||||
* Note that all unsigned char arrays are right-justified and left-padded
|
||||
* with zeroes.
|
||||
*
|
||||
* Note that all reserved fields must be zeroes.
|
||||
*/
|
||||
|
||||
#define TYPE80_RSP_CODE 0x80
|
||||
|
||||
struct type80_hdr {
|
||||
unsigned char reserved1;
|
||||
unsigned char type; /* 0x80 */
|
||||
unsigned short len;
|
||||
unsigned char code; /* 0x00 */
|
||||
unsigned char reserved2[3];
|
||||
unsigned char reserved3[8];
|
||||
} __attribute__((packed));
|
||||
|
||||
int zcrypt_cex2a_init(void);
|
||||
void zcrypt_cex2a_exit(void);
|
||||
|
||||
#endif /* _ZCRYPT_CEX2A_H_ */
|
||||
|
|
@ -0,0 +1,133 @@
|
|||
/*
|
||||
* linux/drivers/s390/crypto/zcrypt_error.h
|
||||
*
|
||||
* zcrypt 2.0.0
|
||||
*
|
||||
* Copyright (C) 2001, 2006 IBM Corporation
|
||||
* Author(s): Robert Burroughs
|
||||
* Eric Rossman (edrossma@us.ibm.com)
|
||||
*
|
||||
* Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
|
||||
* Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2, or (at your option)
|
||||
* any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
*/
|
||||
|
||||
#ifndef _ZCRYPT_ERROR_H_
|
||||
#define _ZCRYPT_ERROR_H_
|
||||
|
||||
#include "zcrypt_api.h"
|
||||
|
||||
/**
|
||||
* Reply Messages
|
||||
*
|
||||
* Error reply messages are of two types:
|
||||
* 82: Error (see below)
|
||||
* 88: Error (see below)
|
||||
* Both type 82 and type 88 have the same structure in the header.
|
||||
*
|
||||
* Request reply messages are of three known types:
|
||||
* 80: Reply from a Type 50 Request (see CEX2A-RELATED STRUCTS)
|
||||
* 84: Reply from a Type 4 Request (see PCICA-RELATED STRUCTS)
|
||||
* 86: Reply from a Type 6 Request (see PCICC/PCIXCC/CEX2C-RELATED STRUCTS)
|
||||
*
|
||||
*/
|
||||
struct error_hdr {
|
||||
unsigned char reserved1; /* 0x00 */
|
||||
unsigned char type; /* 0x82 or 0x88 */
|
||||
unsigned char reserved2[2]; /* 0x0000 */
|
||||
unsigned char reply_code; /* reply code */
|
||||
unsigned char reserved3[3]; /* 0x000000 */
|
||||
};
|
||||
|
||||
#define TYPE82_RSP_CODE 0x82
|
||||
#define TYPE88_RSP_CODE 0x88
|
||||
|
||||
#define REP82_ERROR_MACHINE_FAILURE 0x10
|
||||
#define REP82_ERROR_PREEMPT_FAILURE 0x12
|
||||
#define REP82_ERROR_CHECKPT_FAILURE 0x14
|
||||
#define REP82_ERROR_MESSAGE_TYPE 0x20
|
||||
#define REP82_ERROR_INVALID_COMM_CD 0x21 /* Type 84 */
|
||||
#define REP82_ERROR_INVALID_MSG_LEN 0x23
|
||||
#define REP82_ERROR_RESERVD_FIELD 0x24 /* was 0x50 */
|
||||
#define REP82_ERROR_FORMAT_FIELD 0x29
|
||||
#define REP82_ERROR_INVALID_COMMAND 0x30
|
||||
#define REP82_ERROR_MALFORMED_MSG 0x40
|
||||
#define REP82_ERROR_RESERVED_FIELDO 0x50 /* old value */
|
||||
#define REP82_ERROR_WORD_ALIGNMENT 0x60
|
||||
#define REP82_ERROR_MESSAGE_LENGTH 0x80
|
||||
#define REP82_ERROR_OPERAND_INVALID 0x82
|
||||
#define REP82_ERROR_OPERAND_SIZE 0x84
|
||||
#define REP82_ERROR_EVEN_MOD_IN_OPND 0x85
|
||||
#define REP82_ERROR_RESERVED_FIELD 0x88
|
||||
#define REP82_ERROR_TRANSPORT_FAIL 0x90
|
||||
#define REP82_ERROR_PACKET_TRUNCATED 0xA0
|
||||
#define REP82_ERROR_ZERO_BUFFER_LEN 0xB0
|
||||
|
||||
#define REP88_ERROR_MODULE_FAILURE 0x10
|
||||
|
||||
#define REP88_ERROR_MESSAGE_TYPE 0x20
|
||||
#define REP88_ERROR_MESSAGE_MALFORMD 0x22
|
||||
#define REP88_ERROR_MESSAGE_LENGTH 0x23
|
||||
#define REP88_ERROR_RESERVED_FIELD 0x24
|
||||
#define REP88_ERROR_KEY_TYPE 0x34
|
||||
#define REP88_ERROR_INVALID_KEY 0x82 /* CEX2A */
|
||||
#define REP88_ERROR_OPERAND 0x84 /* CEX2A */
|
||||
#define REP88_ERROR_OPERAND_EVEN_MOD 0x85 /* CEX2A */
|
||||
|
||||
static inline int convert_error(struct zcrypt_device *zdev,
|
||||
struct ap_message *reply)
|
||||
{
|
||||
struct error_hdr *ehdr = reply->message;
|
||||
|
||||
PRINTK("Hardware error : Type %02x Message Header: %08x%08x\n",
|
||||
ehdr->type, *(unsigned int *) reply->message,
|
||||
*(unsigned int *) (reply->message + 4));
|
||||
|
||||
switch (ehdr->reply_code) {
|
||||
case REP82_ERROR_OPERAND_INVALID:
|
||||
case REP82_ERROR_OPERAND_SIZE:
|
||||
case REP82_ERROR_EVEN_MOD_IN_OPND:
|
||||
case REP88_ERROR_MESSAGE_MALFORMD:
|
||||
// REP88_ERROR_INVALID_KEY // '82' CEX2A
|
||||
// REP88_ERROR_OPERAND // '84' CEX2A
|
||||
// REP88_ERROR_OPERAND_EVEN_MOD // '85' CEX2A
|
||||
/* Invalid input data. */
|
||||
return -EINVAL;
|
||||
case REP82_ERROR_MESSAGE_TYPE:
|
||||
// REP88_ERROR_MESSAGE_TYPE // '20' CEX2A
|
||||
/**
|
||||
* To sent a message of the wrong type is a bug in the
|
||||
* device driver. Warn about it, disable the device
|
||||
* and then repeat the request.
|
||||
*/
|
||||
WARN_ON(1);
|
||||
zdev->online = 0;
|
||||
return -EAGAIN;
|
||||
case REP82_ERROR_TRANSPORT_FAIL:
|
||||
case REP82_ERROR_MACHINE_FAILURE:
|
||||
// REP88_ERROR_MODULE_FAILURE // '10' CEX2A
|
||||
/* If a card fails disable it and repeat the request. */
|
||||
zdev->online = 0;
|
||||
return -EAGAIN;
|
||||
default:
|
||||
PRINTKW("unknown type %02x reply code = %d\n",
|
||||
ehdr->type, ehdr->reply_code);
|
||||
zdev->online = 0;
|
||||
return -EAGAIN; /* repeat the request on a different device. */
|
||||
}
|
||||
}
|
||||
|
||||
#endif /* _ZCRYPT_ERROR_H_ */
|
||||
|
|
@ -0,0 +1,418 @@
|
|||
/*
|
||||
* linux/drivers/s390/crypto/zcrypt_pcica.c
|
||||
*
|
||||
* zcrypt 2.0.0
|
||||
*
|
||||
* Copyright (C) 2001, 2006 IBM Corporation
|
||||
* Author(s): Robert Burroughs
|
||||
* Eric Rossman (edrossma@us.ibm.com)
|
||||
*
|
||||
* Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
|
||||
* Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com>
|
||||
* Ralph Wuerthner <rwuerthn@de.ibm.com>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2, or (at your option)
|
||||
* any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
*/
|
||||
|
||||
#include <linux/module.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/err.h>
|
||||
#include <asm/atomic.h>
|
||||
#include <asm/uaccess.h>
|
||||
|
||||
#include "ap_bus.h"
|
||||
#include "zcrypt_api.h"
|
||||
#include "zcrypt_error.h"
|
||||
#include "zcrypt_pcica.h"
|
||||
|
||||
#define PCICA_MIN_MOD_SIZE 1 /* 8 bits */
|
||||
#define PCICA_MAX_MOD_SIZE 256 /* 2048 bits */
|
||||
|
||||
#define PCICA_SPEED_RATING 2800
|
||||
|
||||
#define PCICA_MAX_MESSAGE_SIZE 0x3a0 /* sizeof(struct type4_lcr) */
|
||||
#define PCICA_MAX_RESPONSE_SIZE 0x110 /* max outputdatalength + type80_hdr */
|
||||
|
||||
#define PCICA_CLEANUP_TIME (15*HZ)
|
||||
|
||||
static struct ap_device_id zcrypt_pcica_ids[] = {
|
||||
{ AP_DEVICE(AP_DEVICE_TYPE_PCICA) },
|
||||
{ /* end of list */ },
|
||||
};
|
||||
|
||||
#ifndef CONFIG_ZCRYPT_MONOLITHIC
|
||||
MODULE_DEVICE_TABLE(ap, zcrypt_pcica_ids);
|
||||
MODULE_AUTHOR("IBM Corporation");
|
||||
MODULE_DESCRIPTION("PCICA Cryptographic Coprocessor device driver, "
|
||||
"Copyright 2001, 2006 IBM Corporation");
|
||||
MODULE_LICENSE("GPL");
|
||||
#endif
|
||||
|
||||
static int zcrypt_pcica_probe(struct ap_device *ap_dev);
|
||||
static void zcrypt_pcica_remove(struct ap_device *ap_dev);
|
||||
static void zcrypt_pcica_receive(struct ap_device *, struct ap_message *,
|
||||
struct ap_message *);
|
||||
|
||||
static struct ap_driver zcrypt_pcica_driver = {
|
||||
.probe = zcrypt_pcica_probe,
|
||||
.remove = zcrypt_pcica_remove,
|
||||
.receive = zcrypt_pcica_receive,
|
||||
.ids = zcrypt_pcica_ids,
|
||||
};
|
||||
|
||||
/**
|
||||
* Convert a ICAMEX message to a type4 MEX message.
|
||||
*
|
||||
* @zdev: crypto device pointer
|
||||
* @zreq: crypto request pointer
|
||||
* @mex: pointer to user input data
|
||||
*
|
||||
* Returns 0 on success or -EFAULT.
|
||||
*/
|
||||
static int ICAMEX_msg_to_type4MEX_msg(struct zcrypt_device *zdev,
|
||||
struct ap_message *ap_msg,
|
||||
struct ica_rsa_modexpo *mex)
|
||||
{
|
||||
unsigned char *modulus, *exponent, *message;
|
||||
int mod_len;
|
||||
|
||||
mod_len = mex->inputdatalength;
|
||||
|
||||
if (mod_len <= 128) {
|
||||
struct type4_sme *sme = ap_msg->message;
|
||||
memset(sme, 0, sizeof(*sme));
|
||||
ap_msg->length = sizeof(*sme);
|
||||
sme->header.msg_fmt = TYPE4_SME_FMT;
|
||||
sme->header.msg_len = sizeof(*sme);
|
||||
sme->header.msg_type_code = TYPE4_TYPE_CODE;
|
||||
sme->header.request_code = TYPE4_REQU_CODE;
|
||||
modulus = sme->modulus + sizeof(sme->modulus) - mod_len;
|
||||
exponent = sme->exponent + sizeof(sme->exponent) - mod_len;
|
||||
message = sme->message + sizeof(sme->message) - mod_len;
|
||||
} else {
|
||||
struct type4_lme *lme = ap_msg->message;
|
||||
memset(lme, 0, sizeof(*lme));
|
||||
ap_msg->length = sizeof(*lme);
|
||||
lme->header.msg_fmt = TYPE4_LME_FMT;
|
||||
lme->header.msg_len = sizeof(*lme);
|
||||
lme->header.msg_type_code = TYPE4_TYPE_CODE;
|
||||
lme->header.request_code = TYPE4_REQU_CODE;
|
||||
modulus = lme->modulus + sizeof(lme->modulus) - mod_len;
|
||||
exponent = lme->exponent + sizeof(lme->exponent) - mod_len;
|
||||
message = lme->message + sizeof(lme->message) - mod_len;
|
||||
}
|
||||
|
||||
if (copy_from_user(modulus, mex->n_modulus, mod_len) ||
|
||||
copy_from_user(exponent, mex->b_key, mod_len) ||
|
||||
copy_from_user(message, mex->inputdata, mod_len))
|
||||
return -EFAULT;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* Convert a ICACRT message to a type4 CRT message.
|
||||
*
|
||||
* @zdev: crypto device pointer
|
||||
* @zreq: crypto request pointer
|
||||
* @crt: pointer to user input data
|
||||
*
|
||||
* Returns 0 on success or -EFAULT.
|
||||
*/
|
||||
static int ICACRT_msg_to_type4CRT_msg(struct zcrypt_device *zdev,
|
||||
struct ap_message *ap_msg,
|
||||
struct ica_rsa_modexpo_crt *crt)
|
||||
{
|
||||
unsigned char *p, *q, *dp, *dq, *u, *inp;
|
||||
int mod_len, short_len, long_len;
|
||||
|
||||
mod_len = crt->inputdatalength;
|
||||
short_len = mod_len / 2;
|
||||
long_len = mod_len / 2 + 8;
|
||||
|
||||
if (mod_len <= 128) {
|
||||
struct type4_scr *scr = ap_msg->message;
|
||||
memset(scr, 0, sizeof(*scr));
|
||||
ap_msg->length = sizeof(*scr);
|
||||
scr->header.msg_type_code = TYPE4_TYPE_CODE;
|
||||
scr->header.request_code = TYPE4_REQU_CODE;
|
||||
scr->header.msg_fmt = TYPE4_SCR_FMT;
|
||||
scr->header.msg_len = sizeof(*scr);
|
||||
p = scr->p + sizeof(scr->p) - long_len;
|
||||
q = scr->q + sizeof(scr->q) - short_len;
|
||||
dp = scr->dp + sizeof(scr->dp) - long_len;
|
||||
dq = scr->dq + sizeof(scr->dq) - short_len;
|
||||
u = scr->u + sizeof(scr->u) - long_len;
|
||||
inp = scr->message + sizeof(scr->message) - mod_len;
|
||||
} else {
|
||||
struct type4_lcr *lcr = ap_msg->message;
|
||||
memset(lcr, 0, sizeof(*lcr));
|
||||
ap_msg->length = sizeof(*lcr);
|
||||
lcr->header.msg_type_code = TYPE4_TYPE_CODE;
|
||||
lcr->header.request_code = TYPE4_REQU_CODE;
|
||||
lcr->header.msg_fmt = TYPE4_LCR_FMT;
|
||||
lcr->header.msg_len = sizeof(*lcr);
|
||||
p = lcr->p + sizeof(lcr->p) - long_len;
|
||||
q = lcr->q + sizeof(lcr->q) - short_len;
|
||||
dp = lcr->dp + sizeof(lcr->dp) - long_len;
|
||||
dq = lcr->dq + sizeof(lcr->dq) - short_len;
|
||||
u = lcr->u + sizeof(lcr->u) - long_len;
|
||||
inp = lcr->message + sizeof(lcr->message) - mod_len;
|
||||
}
|
||||
|
||||
if (copy_from_user(p, crt->np_prime, long_len) ||
|
||||
copy_from_user(q, crt->nq_prime, short_len) ||
|
||||
copy_from_user(dp, crt->bp_key, long_len) ||
|
||||
copy_from_user(dq, crt->bq_key, short_len) ||
|
||||
copy_from_user(u, crt->u_mult_inv, long_len) ||
|
||||
copy_from_user(inp, crt->inputdata, mod_len))
|
||||
return -EFAULT;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* Copy results from a type 84 reply message back to user space.
|
||||
*
|
||||
* @zdev: crypto device pointer
|
||||
* @reply: reply AP message.
|
||||
* @data: pointer to user output data
|
||||
* @length: size of user output data
|
||||
*
|
||||
* Returns 0 on success or -EFAULT.
|
||||
*/
|
||||
static inline int convert_type84(struct zcrypt_device *zdev,
|
||||
struct ap_message *reply,
|
||||
char __user *outputdata,
|
||||
unsigned int outputdatalength)
|
||||
{
|
||||
struct type84_hdr *t84h = reply->message;
|
||||
char *data;
|
||||
|
||||
if (t84h->len < sizeof(*t84h) + outputdatalength) {
|
||||
/* The result is too short, the PCICA card may not do that.. */
|
||||
zdev->online = 0;
|
||||
return -EAGAIN; /* repeat the request on a different device. */
|
||||
}
|
||||
BUG_ON(t84h->len > PCICA_MAX_RESPONSE_SIZE);
|
||||
data = reply->message + t84h->len - outputdatalength;
|
||||
if (copy_to_user(outputdata, data, outputdatalength))
|
||||
return -EFAULT;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int convert_response(struct zcrypt_device *zdev,
|
||||
struct ap_message *reply,
|
||||
char __user *outputdata,
|
||||
unsigned int outputdatalength)
|
||||
{
|
||||
/* Response type byte is the second byte in the response. */
|
||||
switch (((unsigned char *) reply->message)[1]) {
|
||||
case TYPE82_RSP_CODE:
|
||||
case TYPE88_RSP_CODE:
|
||||
return convert_error(zdev, reply);
|
||||
case TYPE84_RSP_CODE:
|
||||
return convert_type84(zdev, reply,
|
||||
outputdata, outputdatalength);
|
||||
default: /* Unknown response type, this should NEVER EVER happen */
|
||||
PRINTK("Unrecognized Message Header: %08x%08x\n",
|
||||
*(unsigned int *) reply->message,
|
||||
*(unsigned int *) (reply->message+4));
|
||||
zdev->online = 0;
|
||||
return -EAGAIN; /* repeat the request on a different device. */
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* This function is called from the AP bus code after a crypto request
|
||||
* "msg" has finished with the reply message "reply".
|
||||
* It is called from tasklet context.
|
||||
* @ap_dev: pointer to the AP device
|
||||
* @msg: pointer to the AP message
|
||||
* @reply: pointer to the AP reply message
|
||||
*/
|
||||
static void zcrypt_pcica_receive(struct ap_device *ap_dev,
|
||||
struct ap_message *msg,
|
||||
struct ap_message *reply)
|
||||
{
|
||||
static struct error_hdr error_reply = {
|
||||
.type = TYPE82_RSP_CODE,
|
||||
.reply_code = REP82_ERROR_MACHINE_FAILURE,
|
||||
};
|
||||
struct type84_hdr *t84h = reply->message;
|
||||
int length;
|
||||
|
||||
/* Copy the reply message to the request message buffer. */
|
||||
if (IS_ERR(reply))
|
||||
memcpy(msg->message, &error_reply, sizeof(error_reply));
|
||||
else if (t84h->code == TYPE84_RSP_CODE) {
|
||||
length = min(PCICA_MAX_RESPONSE_SIZE, (int) t84h->len);
|
||||
memcpy(msg->message, reply->message, length);
|
||||
} else
|
||||
memcpy(msg->message, reply->message, sizeof error_reply);
|
||||
complete((struct completion *) msg->private);
|
||||
}
|
||||
|
||||
static atomic_t zcrypt_step = ATOMIC_INIT(0);
|
||||
|
||||
/**
|
||||
* The request distributor calls this function if it picked the PCICA
|
||||
* device to handle a modexpo request.
|
||||
* @zdev: pointer to zcrypt_device structure that identifies the
|
||||
* PCICA device to the request distributor
|
||||
* @mex: pointer to the modexpo request buffer
|
||||
*/
|
||||
static long zcrypt_pcica_modexpo(struct zcrypt_device *zdev,
|
||||
struct ica_rsa_modexpo *mex)
|
||||
{
|
||||
struct ap_message ap_msg;
|
||||
struct completion work;
|
||||
int rc;
|
||||
|
||||
ap_msg.message = (void *) kmalloc(PCICA_MAX_MESSAGE_SIZE, GFP_KERNEL);
|
||||
if (!ap_msg.message)
|
||||
return -ENOMEM;
|
||||
ap_msg.psmid = (((unsigned long long) current->pid) << 32) +
|
||||
atomic_inc_return(&zcrypt_step);
|
||||
ap_msg.private = &work;
|
||||
rc = ICAMEX_msg_to_type4MEX_msg(zdev, &ap_msg, mex);
|
||||
if (rc)
|
||||
goto out_free;
|
||||
init_completion(&work);
|
||||
ap_queue_message(zdev->ap_dev, &ap_msg);
|
||||
rc = wait_for_completion_interruptible_timeout(
|
||||
&work, PCICA_CLEANUP_TIME);
|
||||
if (rc > 0)
|
||||
rc = convert_response(zdev, &ap_msg, mex->outputdata,
|
||||
mex->outputdatalength);
|
||||
else {
|
||||
/* Signal pending or message timed out. */
|
||||
ap_cancel_message(zdev->ap_dev, &ap_msg);
|
||||
if (rc == 0)
|
||||
/* Message timed out. */
|
||||
rc = -ETIME;
|
||||
}
|
||||
out_free:
|
||||
kfree(ap_msg.message);
|
||||
return rc;
|
||||
}
|
||||
|
||||
/**
|
||||
* The request distributor calls this function if it picked the PCICA
|
||||
* device to handle a modexpo_crt request.
|
||||
* @zdev: pointer to zcrypt_device structure that identifies the
|
||||
* PCICA device to the request distributor
|
||||
* @crt: pointer to the modexpoc_crt request buffer
|
||||
*/
|
||||
static long zcrypt_pcica_modexpo_crt(struct zcrypt_device *zdev,
|
||||
struct ica_rsa_modexpo_crt *crt)
|
||||
{
|
||||
struct ap_message ap_msg;
|
||||
struct completion work;
|
||||
int rc;
|
||||
|
||||
ap_msg.message = (void *) kmalloc(PCICA_MAX_MESSAGE_SIZE, GFP_KERNEL);
|
||||
if (!ap_msg.message)
|
||||
return -ENOMEM;
|
||||
ap_msg.psmid = (((unsigned long long) current->pid) << 32) +
|
||||
atomic_inc_return(&zcrypt_step);
|
||||
ap_msg.private = &work;
|
||||
rc = ICACRT_msg_to_type4CRT_msg(zdev, &ap_msg, crt);
|
||||
if (rc)
|
||||
goto out_free;
|
||||
init_completion(&work);
|
||||
ap_queue_message(zdev->ap_dev, &ap_msg);
|
||||
rc = wait_for_completion_interruptible_timeout(
|
||||
&work, PCICA_CLEANUP_TIME);
|
||||
if (rc > 0)
|
||||
rc = convert_response(zdev, &ap_msg, crt->outputdata,
|
||||
crt->outputdatalength);
|
||||
else {
|
||||
/* Signal pending or message timed out. */
|
||||
ap_cancel_message(zdev->ap_dev, &ap_msg);
|
||||
if (rc == 0)
|
||||
/* Message timed out. */
|
||||
rc = -ETIME;
|
||||
}
|
||||
out_free:
|
||||
kfree(ap_msg.message);
|
||||
return rc;
|
||||
}
|
||||
|
||||
/**
|
||||
* The crypto operations for a PCICA card.
|
||||
*/
|
||||
static struct zcrypt_ops zcrypt_pcica_ops = {
|
||||
.rsa_modexpo = zcrypt_pcica_modexpo,
|
||||
.rsa_modexpo_crt = zcrypt_pcica_modexpo_crt,
|
||||
};
|
||||
|
||||
/**
|
||||
* Probe function for PCICA cards. It always accepts the AP device
|
||||
* since the bus_match already checked the hardware type.
|
||||
* @ap_dev: pointer to the AP device.
|
||||
*/
|
||||
static int zcrypt_pcica_probe(struct ap_device *ap_dev)
|
||||
{
|
||||
struct zcrypt_device *zdev;
|
||||
int rc;
|
||||
|
||||
zdev = zcrypt_device_alloc(PCICA_MAX_RESPONSE_SIZE);
|
||||
if (!zdev)
|
||||
return -ENOMEM;
|
||||
zdev->ap_dev = ap_dev;
|
||||
zdev->ops = &zcrypt_pcica_ops;
|
||||
zdev->online = 1;
|
||||
zdev->user_space_type = ZCRYPT_PCICA;
|
||||
zdev->type_string = "PCICA";
|
||||
zdev->min_mod_size = PCICA_MIN_MOD_SIZE;
|
||||
zdev->max_mod_size = PCICA_MAX_MOD_SIZE;
|
||||
zdev->speed_rating = PCICA_SPEED_RATING;
|
||||
ap_dev->reply = &zdev->reply;
|
||||
ap_dev->private = zdev;
|
||||
rc = zcrypt_device_register(zdev);
|
||||
if (rc)
|
||||
goto out_free;
|
||||
return 0;
|
||||
|
||||
out_free:
|
||||
ap_dev->private = NULL;
|
||||
zcrypt_device_free(zdev);
|
||||
return rc;
|
||||
}
|
||||
|
||||
/**
|
||||
* This is called to remove the extended PCICA driver information
|
||||
* if an AP device is removed.
|
||||
*/
|
||||
static void zcrypt_pcica_remove(struct ap_device *ap_dev)
|
||||
{
|
||||
struct zcrypt_device *zdev = ap_dev->private;
|
||||
|
||||
zcrypt_device_unregister(zdev);
|
||||
}
|
||||
|
||||
int __init zcrypt_pcica_init(void)
|
||||
{
|
||||
return ap_driver_register(&zcrypt_pcica_driver, THIS_MODULE, "pcica");
|
||||
}
|
||||
|
||||
void zcrypt_pcica_exit(void)
|
||||
{
|
||||
ap_driver_unregister(&zcrypt_pcica_driver);
|
||||
}
|
||||
|
||||
#ifndef CONFIG_ZCRYPT_MONOLITHIC
|
||||
module_init(zcrypt_pcica_init);
|
||||
module_exit(zcrypt_pcica_exit);
|
||||
#endif
|
||||
|
|
@ -0,0 +1,117 @@
|
|||
/*
|
||||
* linux/drivers/s390/crypto/zcrypt_pcica.h
|
||||
*
|
||||
* zcrypt 2.0.0
|
||||
*
|
||||
* Copyright (C) 2001, 2006 IBM Corporation
|
||||
* Author(s): Robert Burroughs
|
||||
* Eric Rossman (edrossma@us.ibm.com)
|
||||
*
|
||||
* Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
|
||||
* Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2, or (at your option)
|
||||
* any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
*/
|
||||
|
||||
#ifndef _ZCRYPT_PCICA_H_
|
||||
#define _ZCRYPT_PCICA_H_
|
||||
|
||||
/**
|
||||
* The type 4 message family is associated with a PCICA card.
|
||||
*
|
||||
* The four members of the family are described below.
|
||||
*
|
||||
* Note that all unsigned char arrays are right-justified and left-padded
|
||||
* with zeroes.
|
||||
*
|
||||
* Note that all reserved fields must be zeroes.
|
||||
*/
|
||||
struct type4_hdr {
|
||||
unsigned char reserved1;
|
||||
unsigned char msg_type_code; /* 0x04 */
|
||||
unsigned short msg_len;
|
||||
unsigned char request_code; /* 0x40 */
|
||||
unsigned char msg_fmt;
|
||||
unsigned short reserved2;
|
||||
} __attribute__((packed));
|
||||
|
||||
#define TYPE4_TYPE_CODE 0x04
|
||||
#define TYPE4_REQU_CODE 0x40
|
||||
|
||||
#define TYPE4_SME_FMT 0x00
|
||||
#define TYPE4_LME_FMT 0x10
|
||||
#define TYPE4_SCR_FMT 0x40
|
||||
#define TYPE4_LCR_FMT 0x50
|
||||
|
||||
/* Mod-Exp, with a small modulus */
|
||||
struct type4_sme {
|
||||
struct type4_hdr header;
|
||||
unsigned char message[128];
|
||||
unsigned char exponent[128];
|
||||
unsigned char modulus[128];
|
||||
} __attribute__((packed));
|
||||
|
||||
/* Mod-Exp, with a large modulus */
|
||||
struct type4_lme {
|
||||
struct type4_hdr header;
|
||||
unsigned char message[256];
|
||||
unsigned char exponent[256];
|
||||
unsigned char modulus[256];
|
||||
} __attribute__((packed));
|
||||
|
||||
/* CRT, with a small modulus */
|
||||
struct type4_scr {
|
||||
struct type4_hdr header;
|
||||
unsigned char message[128];
|
||||
unsigned char dp[72];
|
||||
unsigned char dq[64];
|
||||
unsigned char p[72];
|
||||
unsigned char q[64];
|
||||
unsigned char u[72];
|
||||
} __attribute__((packed));
|
||||
|
||||
/* CRT, with a large modulus */
|
||||
struct type4_lcr {
|
||||
struct type4_hdr header;
|
||||
unsigned char message[256];
|
||||
unsigned char dp[136];
|
||||
unsigned char dq[128];
|
||||
unsigned char p[136];
|
||||
unsigned char q[128];
|
||||
unsigned char u[136];
|
||||
} __attribute__((packed));
|
||||
|
||||
/**
|
||||
* The type 84 response family is associated with a PCICA card.
|
||||
*
|
||||
* Note that all unsigned char arrays are right-justified and left-padded
|
||||
* with zeroes.
|
||||
*
|
||||
* Note that all reserved fields must be zeroes.
|
||||
*/
|
||||
|
||||
struct type84_hdr {
|
||||
unsigned char reserved1;
|
||||
unsigned char code;
|
||||
unsigned short len;
|
||||
unsigned char reserved2[4];
|
||||
} __attribute__((packed));
|
||||
|
||||
#define TYPE84_RSP_CODE 0x84
|
||||
|
||||
int zcrypt_pcica_init(void);
|
||||
void zcrypt_pcica_exit(void);
|
||||
|
||||
#endif /* _ZCRYPT_PCICA_H_ */
|
||||
Loading…
Reference in New Issue