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![Ralph Wuerthner](/assets/img/avatar_default.png)
Symptom: zcrypt fails by setting all PCIXCC/CEX2C cards offline for a certain type of invalid keys. Problem: zcrypt does not handle rc=12/rs=769 request responses correctly Solution: modify convert_type86_ica() to handle these error codes correctly Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
941 lines
29 KiB
C
941 lines
29 KiB
C
/*
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* linux/drivers/s390/crypto/zcrypt_pcixcc.c
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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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*
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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 <linux/delay.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_pcicc.h"
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#include "zcrypt_pcixcc.h"
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#include "zcrypt_cca_key.h"
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#define PCIXCC_MIN_MOD_SIZE 16 /* 128 bits */
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#define PCIXCC_MIN_MOD_SIZE_OLD 64 /* 512 bits */
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#define PCIXCC_MAX_MOD_SIZE 256 /* 2048 bits */
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#define PCIXCC_MCL2_SPEED_RATING 7870 /* FIXME: needs finetuning */
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#define PCIXCC_MCL3_SPEED_RATING 7870
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#define CEX2C_SPEED_RATING 8540
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#define PCIXCC_MAX_ICA_MESSAGE_SIZE 0x77c /* max size type6 v2 crt message */
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#define PCIXCC_MAX_ICA_RESPONSE_SIZE 0x77c /* max size type86 v2 reply */
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#define PCIXCC_MAX_XCRB_MESSAGE_SIZE (12*1024)
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#define PCIXCC_MAX_XCRB_RESPONSE_SIZE PCIXCC_MAX_XCRB_MESSAGE_SIZE
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#define PCIXCC_MAX_XCRB_DATA_SIZE (11*1024)
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#define PCIXCC_MAX_XCRB_REPLY_SIZE (5*1024)
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#define PCIXCC_MAX_RESPONSE_SIZE PCIXCC_MAX_XCRB_RESPONSE_SIZE
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#define PCIXCC_CLEANUP_TIME (15*HZ)
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#define CEIL4(x) ((((x)+3)/4)*4)
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struct response_type {
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struct completion work;
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int type;
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};
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#define PCIXCC_RESPONSE_TYPE_ICA 0
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#define PCIXCC_RESPONSE_TYPE_XCRB 1
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static struct ap_device_id zcrypt_pcixcc_ids[] = {
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{ AP_DEVICE(AP_DEVICE_TYPE_PCIXCC) },
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{ AP_DEVICE(AP_DEVICE_TYPE_CEX2C) },
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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_pcixcc_ids);
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MODULE_AUTHOR("IBM Corporation");
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MODULE_DESCRIPTION("PCIXCC 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_pcixcc_probe(struct ap_device *ap_dev);
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static void zcrypt_pcixcc_remove(struct ap_device *ap_dev);
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static void zcrypt_pcixcc_receive(struct ap_device *, struct ap_message *,
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struct ap_message *);
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static struct ap_driver zcrypt_pcixcc_driver = {
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.probe = zcrypt_pcixcc_probe,
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.remove = zcrypt_pcixcc_remove,
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.receive = zcrypt_pcixcc_receive,
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.ids = zcrypt_pcixcc_ids,
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.request_timeout = PCIXCC_CLEANUP_TIME,
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};
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/**
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* The following is used to initialize the CPRBX passed to the PCIXCC/CEX2C
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* card in a type6 message. The 3 fields that must be filled in at execution
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* time are req_parml, rpl_parml and usage_domain.
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* Everything about this interface is ascii/big-endian, since the
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* device does *not* have 'Intel inside'.
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*
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* The CPRBX is followed immediately by the parm block.
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* The parm block contains:
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* - function code ('PD' 0x5044 or 'PK' 0x504B)
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* - rule block (one of:)
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* + 0x000A 'PKCS-1.2' (MCL2 'PD')
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* + 0x000A 'ZERO-PAD' (MCL2 'PK')
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* + 0x000A 'ZERO-PAD' (MCL3 'PD' or CEX2C 'PD')
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* + 0x000A 'MRP ' (MCL3 'PK' or CEX2C 'PK')
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* - VUD block
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*/
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static struct CPRBX static_cprbx = {
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.cprb_len = 0x00DC,
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.cprb_ver_id = 0x02,
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.func_id = {0x54,0x32},
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};
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/**
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* Convert a ICAMEX message to a type6 MEX message.
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*
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* @zdev: crypto device pointer
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* @ap_msg: pointer to AP message
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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_type6MEX_msgX(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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static struct type6_hdr static_type6_hdrX = {
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.type = 0x06,
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.offset1 = 0x00000058,
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.agent_id = {'C','A',},
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.function_code = {'P','K'},
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};
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static struct function_and_rules_block static_pke_fnr = {
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.function_code = {'P','K'},
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.ulen = 10,
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.only_rule = {'M','R','P',' ',' ',' ',' ',' '}
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};
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static struct function_and_rules_block static_pke_fnr_MCL2 = {
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.function_code = {'P','K'},
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.ulen = 10,
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.only_rule = {'Z','E','R','O','-','P','A','D'}
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};
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struct {
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struct type6_hdr hdr;
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struct CPRBX cprbx;
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struct function_and_rules_block fr;
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unsigned short length;
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char text[0];
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} __attribute__((packed)) *msg = ap_msg->message;
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int size;
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/* VUD.ciphertext */
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msg->length = mex->inputdatalength + 2;
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if (copy_from_user(msg->text, mex->inputdata, mex->inputdatalength))
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return -EFAULT;
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/* Set up key which is located after the variable length text. */
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size = zcrypt_type6_mex_key_en(mex, msg->text+mex->inputdatalength, 1);
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if (size < 0)
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return size;
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size += sizeof(*msg) + mex->inputdatalength;
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/* message header, cprbx and f&r */
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msg->hdr = static_type6_hdrX;
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msg->hdr.ToCardLen1 = size - sizeof(msg->hdr);
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msg->hdr.FromCardLen1 = PCIXCC_MAX_ICA_RESPONSE_SIZE - sizeof(msg->hdr);
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msg->cprbx = static_cprbx;
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msg->cprbx.domain = AP_QID_QUEUE(zdev->ap_dev->qid);
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msg->cprbx.rpl_msgbl = msg->hdr.FromCardLen1;
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msg->fr = (zdev->user_space_type == ZCRYPT_PCIXCC_MCL2) ?
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static_pke_fnr_MCL2 : static_pke_fnr;
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msg->cprbx.req_parml = size - sizeof(msg->hdr) - sizeof(msg->cprbx);
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ap_msg->length = size;
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return 0;
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}
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/**
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* Convert a ICACRT message to a type6 CRT message.
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*
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* @zdev: crypto device pointer
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* @ap_msg: pointer to AP message
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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_type6CRT_msgX(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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static struct type6_hdr static_type6_hdrX = {
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.type = 0x06,
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.offset1 = 0x00000058,
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.agent_id = {'C','A',},
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.function_code = {'P','D'},
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};
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static struct function_and_rules_block static_pkd_fnr = {
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.function_code = {'P','D'},
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.ulen = 10,
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.only_rule = {'Z','E','R','O','-','P','A','D'}
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};
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static struct function_and_rules_block static_pkd_fnr_MCL2 = {
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.function_code = {'P','D'},
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.ulen = 10,
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.only_rule = {'P','K','C','S','-','1','.','2'}
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};
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struct {
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struct type6_hdr hdr;
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struct CPRBX cprbx;
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struct function_and_rules_block fr;
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unsigned short length;
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char text[0];
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} __attribute__((packed)) *msg = ap_msg->message;
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int size;
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/* VUD.ciphertext */
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msg->length = crt->inputdatalength + 2;
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if (copy_from_user(msg->text, crt->inputdata, crt->inputdatalength))
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return -EFAULT;
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/* Set up key which is located after the variable length text. */
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size = zcrypt_type6_crt_key(crt, msg->text + crt->inputdatalength, 1);
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if (size < 0)
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return size;
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size += sizeof(*msg) + crt->inputdatalength; /* total size of msg */
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/* message header, cprbx and f&r */
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msg->hdr = static_type6_hdrX;
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msg->hdr.ToCardLen1 = size - sizeof(msg->hdr);
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msg->hdr.FromCardLen1 = PCIXCC_MAX_ICA_RESPONSE_SIZE - sizeof(msg->hdr);
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msg->cprbx = static_cprbx;
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msg->cprbx.domain = AP_QID_QUEUE(zdev->ap_dev->qid);
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msg->cprbx.req_parml = msg->cprbx.rpl_msgbl =
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size - sizeof(msg->hdr) - sizeof(msg->cprbx);
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msg->fr = (zdev->user_space_type == ZCRYPT_PCIXCC_MCL2) ?
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static_pkd_fnr_MCL2 : static_pkd_fnr;
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ap_msg->length = size;
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return 0;
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}
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/**
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* Convert a XCRB message to a type6 CPRB message.
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*
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* @zdev: crypto device pointer
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* @ap_msg: pointer to AP message
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* @xcRB: 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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struct type86_fmt2_msg {
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struct type86_hdr hdr;
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struct type86_fmt2_ext fmt2;
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} __attribute__((packed));
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static int XCRB_msg_to_type6CPRB_msgX(struct zcrypt_device *zdev,
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struct ap_message *ap_msg,
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struct ica_xcRB *xcRB)
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{
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static struct type6_hdr static_type6_hdrX = {
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.type = 0x06,
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.offset1 = 0x00000058,
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};
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struct {
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struct type6_hdr hdr;
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struct CPRBX cprbx;
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} __attribute__((packed)) *msg = ap_msg->message;
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int rcblen = CEIL4(xcRB->request_control_blk_length);
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int replylen;
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char *req_data = ap_msg->message + sizeof(struct type6_hdr) + rcblen;
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char *function_code;
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/* length checks */
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ap_msg->length = sizeof(struct type6_hdr) +
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CEIL4(xcRB->request_control_blk_length) +
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xcRB->request_data_length;
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if (ap_msg->length > PCIXCC_MAX_XCRB_MESSAGE_SIZE) {
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PRINTK("Combined message is too large (%ld/%d/%d).\n",
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sizeof(struct type6_hdr),
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xcRB->request_control_blk_length,
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xcRB->request_data_length);
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return -EFAULT;
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}
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if (CEIL4(xcRB->reply_control_blk_length) >
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PCIXCC_MAX_XCRB_REPLY_SIZE) {
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PDEBUG("Reply CPRB length is too large (%d).\n",
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xcRB->request_control_blk_length);
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return -EFAULT;
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}
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if (CEIL4(xcRB->reply_data_length) > PCIXCC_MAX_XCRB_DATA_SIZE) {
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PDEBUG("Reply data block length is too large (%d).\n",
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xcRB->reply_data_length);
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return -EFAULT;
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}
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replylen = CEIL4(xcRB->reply_control_blk_length) +
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CEIL4(xcRB->reply_data_length) +
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sizeof(struct type86_fmt2_msg);
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if (replylen > PCIXCC_MAX_XCRB_RESPONSE_SIZE) {
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PDEBUG("Reply CPRB + data block > PCIXCC_MAX_XCRB_RESPONSE_SIZE"
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" (%d/%d/%d).\n",
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sizeof(struct type86_fmt2_msg),
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xcRB->reply_control_blk_length,
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xcRB->reply_data_length);
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xcRB->reply_control_blk_length = PCIXCC_MAX_XCRB_RESPONSE_SIZE -
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(sizeof(struct type86_fmt2_msg) +
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CEIL4(xcRB->reply_data_length));
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PDEBUG("Capping Reply CPRB length at %d\n",
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xcRB->reply_control_blk_length);
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}
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/* prepare type6 header */
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msg->hdr = static_type6_hdrX;
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memcpy(msg->hdr.agent_id , &(xcRB->agent_ID), sizeof(xcRB->agent_ID));
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msg->hdr.ToCardLen1 = xcRB->request_control_blk_length;
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if (xcRB->request_data_length) {
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msg->hdr.offset2 = msg->hdr.offset1 + rcblen;
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msg->hdr.ToCardLen2 = xcRB->request_data_length;
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}
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msg->hdr.FromCardLen1 = xcRB->reply_control_blk_length;
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msg->hdr.FromCardLen2 = xcRB->reply_data_length;
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/* prepare CPRB */
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if (copy_from_user(&(msg->cprbx), xcRB->request_control_blk_addr,
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xcRB->request_control_blk_length))
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return -EFAULT;
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if (msg->cprbx.cprb_len + sizeof(msg->hdr.function_code) >
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xcRB->request_control_blk_length) {
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PDEBUG("cprb_len too large (%d/%d)\n", msg->cprbx.cprb_len,
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xcRB->request_control_blk_length);
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return -EFAULT;
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}
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function_code = ((unsigned char *)&msg->cprbx) + msg->cprbx.cprb_len;
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memcpy(msg->hdr.function_code, function_code, sizeof(msg->hdr.function_code));
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/* copy data block */
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if (xcRB->request_data_length &&
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copy_from_user(req_data, xcRB->request_data_address,
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xcRB->request_data_length))
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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 86 ICA 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 -EINVAL, -EFAULT, -EAGAIN in case of an error.
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*/
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struct type86x_reply {
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struct type86_hdr hdr;
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struct type86_fmt2_ext fmt2;
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struct CPRBX cprbx;
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unsigned char pad[4]; /* 4 byte function code/rules block ? */
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unsigned short length;
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char text[0];
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} __attribute__((packed));
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static int convert_type86_ica(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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static unsigned char static_pad[] = {
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0x00,0x02,
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0x1B,0x7B,0x5D,0xB5,0x75,0x01,0x3D,0xFD,
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0x8D,0xD1,0xC7,0x03,0x2D,0x09,0x23,0x57,
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0x89,0x49,0xB9,0x3F,0xBB,0x99,0x41,0x5B,
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0x75,0x21,0x7B,0x9D,0x3B,0x6B,0x51,0x39,
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0xBB,0x0D,0x35,0xB9,0x89,0x0F,0x93,0xA5,
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0x0B,0x47,0xF1,0xD3,0xBB,0xCB,0xF1,0x9D,
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0x23,0x73,0x71,0xFF,0xF3,0xF5,0x45,0xFB,
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0x61,0x29,0x23,0xFD,0xF1,0x29,0x3F,0x7F,
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0x17,0xB7,0x1B,0xA9,0x19,0xBD,0x57,0xA9,
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0xD7,0x95,0xA3,0xCB,0xED,0x1D,0xDB,0x45,
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0x7D,0x11,0xD1,0x51,0x1B,0xED,0x71,0xE9,
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0xB1,0xD1,0xAB,0xAB,0x21,0x2B,0x1B,0x9F,
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0x3B,0x9F,0xF7,0xF7,0xBD,0x63,0xEB,0xAD,
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0xDF,0xB3,0x6F,0x5B,0xDB,0x8D,0xA9,0x5D,
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0xE3,0x7D,0x77,0x49,0x47,0xF5,0xA7,0xFD,
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0xAB,0x2F,0x27,0x35,0x77,0xD3,0x49,0xC9,
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0x09,0xEB,0xB1,0xF9,0xBF,0x4B,0xCB,0x2B,
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0xEB,0xEB,0x05,0xFF,0x7D,0xC7,0x91,0x8B,
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0x09,0x83,0xB9,0xB9,0x69,0x33,0x39,0x6B,
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0x79,0x75,0x19,0xBF,0xBB,0x07,0x1D,0xBD,
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0x29,0xBF,0x39,0x95,0x93,0x1D,0x35,0xC7,
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0xC9,0x4D,0xE5,0x97,0x0B,0x43,0x9B,0xF1,
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0x16,0x93,0x03,0x1F,0xA5,0xFB,0xDB,0xF3,
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0x27,0x4F,0x27,0x61,0x05,0x1F,0xB9,0x23,
|
|
0x2F,0xC3,0x81,0xA9,0x23,0x71,0x55,0x55,
|
|
0xEB,0xED,0x41,0xE5,0xF3,0x11,0xF1,0x43,
|
|
0x69,0x03,0xBD,0x0B,0x37,0x0F,0x51,0x8F,
|
|
0x0B,0xB5,0x89,0x5B,0x67,0xA9,0xD9,0x4F,
|
|
0x01,0xF9,0x21,0x77,0x37,0x73,0x79,0xC5,
|
|
0x7F,0x51,0xC1,0xCF,0x97,0xA1,0x75,0xAD,
|
|
0x35,0x9D,0xD3,0xD3,0xA7,0x9D,0x5D,0x41,
|
|
0x6F,0x65,0x1B,0xCF,0xA9,0x87,0x91,0x09
|
|
};
|
|
struct type86x_reply *msg = reply->message;
|
|
unsigned short service_rc, service_rs;
|
|
unsigned int reply_len, pad_len;
|
|
char *data;
|
|
|
|
service_rc = msg->cprbx.ccp_rtcode;
|
|
if (unlikely(service_rc != 0)) {
|
|
service_rs = msg->cprbx.ccp_rscode;
|
|
if (service_rc == 8 && service_rs == 66) {
|
|
PDEBUG("Bad block format on PCIXCC/CEX2C\n");
|
|
return -EINVAL;
|
|
}
|
|
if (service_rc == 8 && service_rs == 65) {
|
|
PDEBUG("Probably an even modulus on PCIXCC/CEX2C\n");
|
|
return -EINVAL;
|
|
}
|
|
if (service_rc == 8 && service_rs == 770) {
|
|
PDEBUG("Invalid key length on PCIXCC/CEX2C\n");
|
|
return -EINVAL;
|
|
}
|
|
if (service_rc == 8 && service_rs == 783) {
|
|
PDEBUG("Extended bitlengths not enabled on PCIXCC/CEX2C\n");
|
|
zdev->min_mod_size = PCIXCC_MIN_MOD_SIZE_OLD;
|
|
return -EAGAIN;
|
|
}
|
|
if (service_rc == 12 && service_rs == 769) {
|
|
PDEBUG("Invalid key on PCIXCC/CEX2C\n");
|
|
return -EINVAL;
|
|
}
|
|
PRINTK("Unknown service rc/rs (PCIXCC/CEX2C): %d/%d\n",
|
|
service_rc, service_rs);
|
|
zdev->online = 0;
|
|
return -EAGAIN; /* repeat the request on a different device. */
|
|
}
|
|
data = msg->text;
|
|
reply_len = msg->length - 2;
|
|
if (reply_len > outputdatalength)
|
|
return -EINVAL;
|
|
/**
|
|
* For all encipher requests, the length of the ciphertext (reply_len)
|
|
* will always equal the modulus length. For MEX decipher requests
|
|
* the output needs to get padded. Minimum pad size is 10.
|
|
*
|
|
* Currently, the cases where padding will be added is for:
|
|
* - PCIXCC_MCL2 using a CRT form token (since PKD didn't support
|
|
* ZERO-PAD and CRT is only supported for PKD requests)
|
|
* - PCICC, always
|
|
*/
|
|
pad_len = outputdatalength - reply_len;
|
|
if (pad_len > 0) {
|
|
if (pad_len < 10)
|
|
return -EINVAL;
|
|
/* 'restore' padding left in the PCICC/PCIXCC card. */
|
|
if (copy_to_user(outputdata, static_pad, pad_len - 1))
|
|
return -EFAULT;
|
|
if (put_user(0, outputdata + pad_len - 1))
|
|
return -EFAULT;
|
|
}
|
|
/* Copy the crypto response to user space. */
|
|
if (copy_to_user(outputdata + pad_len, data, reply_len))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Copy results from a type 86 XCRB reply message back to user space.
|
|
*
|
|
* @zdev: crypto device pointer
|
|
* @reply: reply AP message.
|
|
* @xcRB: pointer to XCRB
|
|
*
|
|
* Returns 0 on success or -EINVAL, -EFAULT, -EAGAIN in case of an error.
|
|
*/
|
|
static int convert_type86_xcrb(struct zcrypt_device *zdev,
|
|
struct ap_message *reply,
|
|
struct ica_xcRB *xcRB)
|
|
{
|
|
struct type86_fmt2_msg *msg = reply->message;
|
|
char *data = reply->message;
|
|
|
|
/* Copy CPRB to user */
|
|
if (copy_to_user(xcRB->reply_control_blk_addr,
|
|
data + msg->fmt2.offset1, msg->fmt2.count1))
|
|
return -EFAULT;
|
|
xcRB->reply_control_blk_length = msg->fmt2.count1;
|
|
|
|
/* Copy data buffer to user */
|
|
if (msg->fmt2.count2)
|
|
if (copy_to_user(xcRB->reply_data_addr,
|
|
data + msg->fmt2.offset2, msg->fmt2.count2))
|
|
return -EFAULT;
|
|
xcRB->reply_data_length = msg->fmt2.count2;
|
|
return 0;
|
|
}
|
|
|
|
static int convert_response_ica(struct zcrypt_device *zdev,
|
|
struct ap_message *reply,
|
|
char __user *outputdata,
|
|
unsigned int outputdatalength)
|
|
{
|
|
struct type86x_reply *msg = reply->message;
|
|
|
|
/* 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 TYPE86_RSP_CODE:
|
|
if (msg->hdr.reply_code)
|
|
return convert_error(zdev, reply);
|
|
if (msg->cprbx.cprb_ver_id == 0x02)
|
|
return convert_type86_ica(zdev, reply,
|
|
outputdata, outputdatalength);
|
|
/* no break, incorrect cprb version is an unknown response */
|
|
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. */
|
|
}
|
|
}
|
|
|
|
static int convert_response_xcrb(struct zcrypt_device *zdev,
|
|
struct ap_message *reply,
|
|
struct ica_xcRB *xcRB)
|
|
{
|
|
struct type86x_reply *msg = reply->message;
|
|
|
|
/* Response type byte is the second byte in the response. */
|
|
switch (((unsigned char *) reply->message)[1]) {
|
|
case TYPE82_RSP_CODE:
|
|
case TYPE88_RSP_CODE:
|
|
xcRB->status = 0x0008044DL; /* HDD_InvalidParm */
|
|
return convert_error(zdev, reply);
|
|
case TYPE86_RSP_CODE:
|
|
if (msg->hdr.reply_code) {
|
|
memcpy(&(xcRB->status), msg->fmt2.apfs, sizeof(u32));
|
|
return convert_error(zdev, reply);
|
|
}
|
|
if (msg->cprbx.cprb_ver_id == 0x02)
|
|
return convert_type86_xcrb(zdev, reply, xcRB);
|
|
/* no break, incorrect cprb version is an unknown response */
|
|
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));
|
|
xcRB->status = 0x0008044DL; /* HDD_InvalidParm */
|
|
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_pcixcc_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 response_type *resp_type =
|
|
(struct response_type *) msg->private;
|
|
struct type86x_reply *t86r = 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 (t86r->hdr.type == TYPE86_RSP_CODE &&
|
|
t86r->cprbx.cprb_ver_id == 0x02) {
|
|
switch (resp_type->type) {
|
|
case PCIXCC_RESPONSE_TYPE_ICA:
|
|
length = sizeof(struct type86x_reply)
|
|
+ t86r->length - 2;
|
|
length = min(PCIXCC_MAX_ICA_RESPONSE_SIZE, length);
|
|
memcpy(msg->message, reply->message, length);
|
|
break;
|
|
case PCIXCC_RESPONSE_TYPE_XCRB:
|
|
length = t86r->fmt2.offset2 + t86r->fmt2.count2;
|
|
length = min(PCIXCC_MAX_XCRB_RESPONSE_SIZE, length);
|
|
memcpy(msg->message, reply->message, length);
|
|
break;
|
|
default:
|
|
PRINTK("Invalid internal response type: %i\n",
|
|
resp_type->type);
|
|
memcpy(msg->message, &error_reply,
|
|
sizeof error_reply);
|
|
}
|
|
} else
|
|
memcpy(msg->message, reply->message, sizeof error_reply);
|
|
complete(&(resp_type->work));
|
|
}
|
|
|
|
static atomic_t zcrypt_step = ATOMIC_INIT(0);
|
|
|
|
/**
|
|
* The request distributor calls this function if it picked the PCIXCC/CEX2C
|
|
* device to handle a modexpo request.
|
|
* @zdev: pointer to zcrypt_device structure that identifies the
|
|
* PCIXCC/CEX2C device to the request distributor
|
|
* @mex: pointer to the modexpo request buffer
|
|
*/
|
|
static long zcrypt_pcixcc_modexpo(struct zcrypt_device *zdev,
|
|
struct ica_rsa_modexpo *mex)
|
|
{
|
|
struct ap_message ap_msg;
|
|
struct response_type resp_type = {
|
|
.type = PCIXCC_RESPONSE_TYPE_ICA,
|
|
};
|
|
int rc;
|
|
|
|
ap_msg.message = (void *) get_zeroed_page(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 = &resp_type;
|
|
rc = ICAMEX_msg_to_type6MEX_msgX(zdev, &ap_msg, mex);
|
|
if (rc)
|
|
goto out_free;
|
|
init_completion(&resp_type.work);
|
|
ap_queue_message(zdev->ap_dev, &ap_msg);
|
|
rc = wait_for_completion_interruptible(&resp_type.work);
|
|
if (rc == 0)
|
|
rc = convert_response_ica(zdev, &ap_msg, mex->outputdata,
|
|
mex->outputdatalength);
|
|
else
|
|
/* Signal pending. */
|
|
ap_cancel_message(zdev->ap_dev, &ap_msg);
|
|
out_free:
|
|
free_page((unsigned long) ap_msg.message);
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* The request distributor calls this function if it picked the PCIXCC/CEX2C
|
|
* device to handle a modexpo_crt request.
|
|
* @zdev: pointer to zcrypt_device structure that identifies the
|
|
* PCIXCC/CEX2C device to the request distributor
|
|
* @crt: pointer to the modexpoc_crt request buffer
|
|
*/
|
|
static long zcrypt_pcixcc_modexpo_crt(struct zcrypt_device *zdev,
|
|
struct ica_rsa_modexpo_crt *crt)
|
|
{
|
|
struct ap_message ap_msg;
|
|
struct response_type resp_type = {
|
|
.type = PCIXCC_RESPONSE_TYPE_ICA,
|
|
};
|
|
int rc;
|
|
|
|
ap_msg.message = (void *) get_zeroed_page(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 = &resp_type;
|
|
rc = ICACRT_msg_to_type6CRT_msgX(zdev, &ap_msg, crt);
|
|
if (rc)
|
|
goto out_free;
|
|
init_completion(&resp_type.work);
|
|
ap_queue_message(zdev->ap_dev, &ap_msg);
|
|
rc = wait_for_completion_interruptible(&resp_type.work);
|
|
if (rc == 0)
|
|
rc = convert_response_ica(zdev, &ap_msg, crt->outputdata,
|
|
crt->outputdatalength);
|
|
else
|
|
/* Signal pending. */
|
|
ap_cancel_message(zdev->ap_dev, &ap_msg);
|
|
out_free:
|
|
free_page((unsigned long) ap_msg.message);
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* The request distributor calls this function if it picked the PCIXCC/CEX2C
|
|
* device to handle a send_cprb request.
|
|
* @zdev: pointer to zcrypt_device structure that identifies the
|
|
* PCIXCC/CEX2C device to the request distributor
|
|
* @xcRB: pointer to the send_cprb request buffer
|
|
*/
|
|
static long zcrypt_pcixcc_send_cprb(struct zcrypt_device *zdev,
|
|
struct ica_xcRB *xcRB)
|
|
{
|
|
struct ap_message ap_msg;
|
|
struct response_type resp_type = {
|
|
.type = PCIXCC_RESPONSE_TYPE_XCRB,
|
|
};
|
|
int rc;
|
|
|
|
ap_msg.message = kmalloc(PCIXCC_MAX_XCRB_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 = &resp_type;
|
|
rc = XCRB_msg_to_type6CPRB_msgX(zdev, &ap_msg, xcRB);
|
|
if (rc)
|
|
goto out_free;
|
|
init_completion(&resp_type.work);
|
|
ap_queue_message(zdev->ap_dev, &ap_msg);
|
|
rc = wait_for_completion_interruptible(&resp_type.work);
|
|
if (rc == 0)
|
|
rc = convert_response_xcrb(zdev, &ap_msg, xcRB);
|
|
else
|
|
/* Signal pending. */
|
|
ap_cancel_message(zdev->ap_dev, &ap_msg);
|
|
out_free:
|
|
memset(ap_msg.message, 0x0, ap_msg.length);
|
|
kfree(ap_msg.message);
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* The crypto operations for a PCIXCC/CEX2C card.
|
|
*/
|
|
static struct zcrypt_ops zcrypt_pcixcc_ops = {
|
|
.rsa_modexpo = zcrypt_pcixcc_modexpo,
|
|
.rsa_modexpo_crt = zcrypt_pcixcc_modexpo_crt,
|
|
.send_cprb = zcrypt_pcixcc_send_cprb,
|
|
};
|
|
|
|
/**
|
|
* Micro-code detection function. Its sends a message to a pcixcc card
|
|
* to find out the microcode level.
|
|
* @ap_dev: pointer to the AP device.
|
|
*/
|
|
static int zcrypt_pcixcc_mcl(struct ap_device *ap_dev)
|
|
{
|
|
static unsigned char msg[] = {
|
|
0x00,0x06,0x00,0x00,0x00,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0x58,0x00,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
|
0x43,0x41,0x00,0x00,0x00,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0x00,0x50,0x4B,0x00,0x00,
|
|
0x00,0x00,0x01,0xC4,0x00,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
|
0x00,0x00,0x07,0x24,0x00,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
|
0x00,0xDC,0x02,0x00,0x00,0x00,0x54,0x32,
|
|
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xE8,
|
|
0x00,0x00,0x00,0x00,0x00,0x00,0x07,0x24,
|
|
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0x04,0x00,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0x00,0x50,0x4B,0x00,0x0A,
|
|
0x4D,0x52,0x50,0x20,0x20,0x20,0x20,0x20,
|
|
0x00,0x42,0x00,0x01,0x02,0x03,0x04,0x05,
|
|
0x06,0x07,0x08,0x09,0x0A,0x0B,0x0C,0x0D,
|
|
0x0E,0x0F,0x00,0x11,0x22,0x33,0x44,0x55,
|
|
0x66,0x77,0x88,0x99,0xAA,0xBB,0xCC,0xDD,
|
|
0xEE,0xFF,0xFF,0xEE,0xDD,0xCC,0xBB,0xAA,
|
|
0x99,0x88,0x77,0x66,0x55,0x44,0x33,0x22,
|
|
0x11,0x00,0x01,0x23,0x45,0x67,0x89,0xAB,
|
|
0xCD,0xEF,0xFE,0xDC,0xBA,0x98,0x76,0x54,
|
|
0x32,0x10,0x00,0x9A,0x00,0x98,0x00,0x00,
|
|
0x1E,0x00,0x00,0x94,0x00,0x00,0x00,0x00,
|
|
0x04,0x00,0x00,0x8C,0x00,0x00,0x00,0x40,
|
|
0x02,0x00,0x00,0x40,0xBA,0xE8,0x23,0x3C,
|
|
0x75,0xF3,0x91,0x61,0xD6,0x73,0x39,0xCF,
|
|
0x7B,0x6D,0x8E,0x61,0x97,0x63,0x9E,0xD9,
|
|
0x60,0x55,0xD6,0xC7,0xEF,0xF8,0x1E,0x63,
|
|
0x95,0x17,0xCC,0x28,0x45,0x60,0x11,0xC5,
|
|
0xC4,0x4E,0x66,0xC6,0xE6,0xC3,0xDE,0x8A,
|
|
0x19,0x30,0xCF,0x0E,0xD7,0xAA,0xDB,0x01,
|
|
0xD8,0x00,0xBB,0x8F,0x39,0x9F,0x64,0x28,
|
|
0xF5,0x7A,0x77,0x49,0xCC,0x6B,0xA3,0x91,
|
|
0x97,0x70,0xE7,0x60,0x1E,0x39,0xE1,0xE5,
|
|
0x33,0xE1,0x15,0x63,0x69,0x08,0x80,0x4C,
|
|
0x67,0xC4,0x41,0x8F,0x48,0xDF,0x26,0x98,
|
|
0xF1,0xD5,0x8D,0x88,0xD9,0x6A,0xA4,0x96,
|
|
0xC5,0x84,0xD9,0x30,0x49,0x67,0x7D,0x19,
|
|
0xB1,0xB3,0x45,0x4D,0xB2,0x53,0x9A,0x47,
|
|
0x3C,0x7C,0x55,0xBF,0xCC,0x85,0x00,0x36,
|
|
0xF1,0x3D,0x93,0x53
|
|
};
|
|
unsigned long long psmid;
|
|
struct CPRBX *cprbx;
|
|
char *reply;
|
|
int rc, i;
|
|
|
|
reply = (void *) get_zeroed_page(GFP_KERNEL);
|
|
if (!reply)
|
|
return -ENOMEM;
|
|
|
|
rc = ap_send(ap_dev->qid, 0x0102030405060708ULL, msg, sizeof(msg));
|
|
if (rc)
|
|
goto out_free;
|
|
|
|
/* Wait for the test message to complete. */
|
|
for (i = 0; i < 6; i++) {
|
|
mdelay(300);
|
|
rc = ap_recv(ap_dev->qid, &psmid, reply, 4096);
|
|
if (rc == 0 && psmid == 0x0102030405060708ULL)
|
|
break;
|
|
}
|
|
|
|
if (i >= 6) {
|
|
/* Got no answer. */
|
|
rc = -ENODEV;
|
|
goto out_free;
|
|
}
|
|
|
|
cprbx = (struct CPRBX *) (reply + 48);
|
|
if (cprbx->ccp_rtcode == 8 && cprbx->ccp_rscode == 33)
|
|
rc = ZCRYPT_PCIXCC_MCL2;
|
|
else
|
|
rc = ZCRYPT_PCIXCC_MCL3;
|
|
out_free:
|
|
free_page((unsigned long) reply);
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* Probe function for PCIXCC/CEX2C cards. It always accepts the AP device
|
|
* since the bus_match already checked the hardware type. The PCIXCC
|
|
* cards come in two flavours: micro code level 2 and micro code level 3.
|
|
* This is checked by sending a test message to the device.
|
|
* @ap_dev: pointer to the AP device.
|
|
*/
|
|
static int zcrypt_pcixcc_probe(struct ap_device *ap_dev)
|
|
{
|
|
struct zcrypt_device *zdev;
|
|
int rc;
|
|
|
|
zdev = zcrypt_device_alloc(PCIXCC_MAX_RESPONSE_SIZE);
|
|
if (!zdev)
|
|
return -ENOMEM;
|
|
zdev->ap_dev = ap_dev;
|
|
zdev->ops = &zcrypt_pcixcc_ops;
|
|
zdev->online = 1;
|
|
if (ap_dev->device_type == AP_DEVICE_TYPE_PCIXCC) {
|
|
rc = zcrypt_pcixcc_mcl(ap_dev);
|
|
if (rc < 0) {
|
|
zcrypt_device_free(zdev);
|
|
return rc;
|
|
}
|
|
zdev->user_space_type = rc;
|
|
if (rc == ZCRYPT_PCIXCC_MCL2) {
|
|
zdev->type_string = "PCIXCC_MCL2";
|
|
zdev->speed_rating = PCIXCC_MCL2_SPEED_RATING;
|
|
zdev->min_mod_size = PCIXCC_MIN_MOD_SIZE_OLD;
|
|
zdev->max_mod_size = PCIXCC_MAX_MOD_SIZE;
|
|
} else {
|
|
zdev->type_string = "PCIXCC_MCL3";
|
|
zdev->speed_rating = PCIXCC_MCL3_SPEED_RATING;
|
|
zdev->min_mod_size = PCIXCC_MIN_MOD_SIZE;
|
|
zdev->max_mod_size = PCIXCC_MAX_MOD_SIZE;
|
|
}
|
|
} else {
|
|
zdev->user_space_type = ZCRYPT_CEX2C;
|
|
zdev->type_string = "CEX2C";
|
|
zdev->speed_rating = CEX2C_SPEED_RATING;
|
|
zdev->min_mod_size = PCIXCC_MIN_MOD_SIZE;
|
|
zdev->max_mod_size = PCIXCC_MAX_MOD_SIZE;
|
|
}
|
|
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 PCIXCC/CEX2C driver information
|
|
* if an AP device is removed.
|
|
*/
|
|
static void zcrypt_pcixcc_remove(struct ap_device *ap_dev)
|
|
{
|
|
struct zcrypt_device *zdev = ap_dev->private;
|
|
|
|
zcrypt_device_unregister(zdev);
|
|
}
|
|
|
|
int __init zcrypt_pcixcc_init(void)
|
|
{
|
|
return ap_driver_register(&zcrypt_pcixcc_driver, THIS_MODULE, "pcixcc");
|
|
}
|
|
|
|
void zcrypt_pcixcc_exit(void)
|
|
{
|
|
ap_driver_unregister(&zcrypt_pcixcc_driver);
|
|
}
|
|
|
|
#ifndef CONFIG_ZCRYPT_MONOLITHIC
|
|
module_init(zcrypt_pcixcc_init);
|
|
module_exit(zcrypt_pcixcc_exit);
|
|
#endif
|