259 lines
8.4 KiB
C
259 lines
8.4 KiB
C
/*
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* linux/drivers/s390/crypto/z90crypt.h
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*
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* z90crypt 1.3.2
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*
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* Copyright (C) 2001, 2004 IBM Corporation
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* Author(s): Robert Burroughs (burrough@us.ibm.com)
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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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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef _Z90CRYPT_H_
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#define _Z90CRYPT_H_
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#include <linux/ioctl.h>
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#define VERSION_Z90CRYPT_H "$Revision: 1.11 $"
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#define z90crypt_VERSION 1
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#define z90crypt_RELEASE 3 // 2 = PCIXCC, 3 = rewrite for coding standards
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#define z90crypt_VARIANT 2 // 2 = added PCIXCC MCL3 and CEX2C support
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/**
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* If we are not using the sparse checker, __user has no use.
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*/
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#ifdef __CHECKER__
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# define __user __attribute__((noderef, address_space(1)))
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#else
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# define __user
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#endif
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/**
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* struct ica_rsa_modexpo
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*
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* Requirements:
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* - outputdatalength is at least as large as inputdatalength.
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* - All key parts are right justified in their fields, padded on
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* the left with zeroes.
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* - length(b_key) = inputdatalength
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* - length(n_modulus) = inputdatalength
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*/
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struct ica_rsa_modexpo {
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char __user * inputdata;
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unsigned int inputdatalength;
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char __user * outputdata;
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unsigned int outputdatalength;
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char __user * b_key;
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char __user * n_modulus;
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};
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/**
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* struct ica_rsa_modexpo_crt
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*
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* Requirements:
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* - inputdatalength is even.
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* - outputdatalength is at least as large as inputdatalength.
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* - All key parts are right justified in their fields, padded on
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* the left with zeroes.
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* - length(bp_key) = inputdatalength/2 + 8
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* - length(bq_key) = inputdatalength/2
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* - length(np_key) = inputdatalength/2 + 8
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* - length(nq_key) = inputdatalength/2
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* - length(u_mult_inv) = inputdatalength/2 + 8
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*/
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struct ica_rsa_modexpo_crt {
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char __user * inputdata;
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unsigned int inputdatalength;
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char __user * outputdata;
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unsigned int outputdatalength;
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char __user * bp_key;
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char __user * bq_key;
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char __user * np_prime;
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char __user * nq_prime;
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char __user * u_mult_inv;
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};
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#define Z90_IOCTL_MAGIC 'z' // NOTE: Need to allocate from linux folks
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/**
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* Interface notes:
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*
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* The ioctl()s which are implemented (along with relevant details)
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* are:
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*
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* ICARSAMODEXPO
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* Perform an RSA operation using a Modulus-Exponent pair
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* This takes an ica_rsa_modexpo struct as its arg.
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*
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* NOTE: please refer to the comments preceding this structure
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* for the implementation details for the contents of the
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* block
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*
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* ICARSACRT
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* Perform an RSA operation using a Chinese-Remainder Theorem key
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* This takes an ica_rsa_modexpo_crt struct as its arg.
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*
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* NOTE: please refer to the comments preceding this structure
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* for the implementation details for the contents of the
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* block
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*
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* Z90STAT_TOTALCOUNT
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* Return an integer count of all device types together.
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*
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* Z90STAT_PCICACOUNT
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* Return an integer count of all PCICAs.
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*
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* Z90STAT_PCICCCOUNT
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* Return an integer count of all PCICCs.
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*
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* Z90STAT_PCIXCCMCL2COUNT
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* Return an integer count of all MCL2 PCIXCCs.
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*
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* Z90STAT_PCIXCCMCL3COUNT
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* Return an integer count of all MCL3 PCIXCCs.
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*
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* Z90STAT_CEX2CCOUNT
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* Return an integer count of all CEX2Cs.
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*
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* Z90STAT_REQUESTQ_COUNT
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* Return an integer count of the number of entries waiting to be
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* sent to a device.
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*
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* Z90STAT_PENDINGQ_COUNT
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* Return an integer count of the number of entries sent to a
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* device awaiting the reply.
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*
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* Z90STAT_TOTALOPEN_COUNT
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* Return an integer count of the number of open file handles.
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*
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* Z90STAT_DOMAIN_INDEX
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* Return the integer value of the Cryptographic Domain.
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*
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* Z90STAT_STATUS_MASK
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* Return an 64 element array of unsigned chars for the status of
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* all devices.
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* 0x01: PCICA
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* 0x02: PCICC
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* 0x03: PCIXCC_MCL2
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* 0x04: PCIXCC_MCL3
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* 0x05: CEX2C
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* 0x0d: device is disabled via the proc filesystem
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*
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* Z90STAT_QDEPTH_MASK
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* Return an 64 element array of unsigned chars for the queue
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* depth of all devices.
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*
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* Z90STAT_PERDEV_REQCNT
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* Return an 64 element array of unsigned integers for the number
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* of successfully completed requests per device since the device
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* was detected and made available.
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*
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* ICAZ90STATUS (deprecated)
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* Return some device driver status in a ica_z90_status struct
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* This takes an ica_z90_status struct as its arg.
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*
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* NOTE: this ioctl() is deprecated, and has been replaced with
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* single ioctl()s for each type of status being requested
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*
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* Z90STAT_PCIXCCCOUNT (deprecated)
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* Return an integer count of all PCIXCCs (MCL2 + MCL3).
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* This is DEPRECATED now that MCL3 PCIXCCs are treated differently from
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* MCL2 PCIXCCs.
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*
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* Z90QUIESCE (not recommended)
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* Quiesce the driver. This is intended to stop all new
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* requests from being processed. Its use is NOT recommended,
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* except in circumstances where there is no other way to stop
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* callers from accessing the driver. Its original use was to
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* allow the driver to be "drained" of work in preparation for
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* a system shutdown.
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*
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* NOTE: once issued, this ban on new work cannot be undone
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* except by unloading and reloading the driver.
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*/
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/**
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* Supported ioctl calls
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*/
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#define ICARSAMODEXPO _IOC(_IOC_READ|_IOC_WRITE, Z90_IOCTL_MAGIC, 0x05, 0)
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#define ICARSACRT _IOC(_IOC_READ|_IOC_WRITE, Z90_IOCTL_MAGIC, 0x06, 0)
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/* DEPRECATED status calls (bound for removal at some point) */
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#define ICAZ90STATUS _IOR(Z90_IOCTL_MAGIC, 0x10, struct ica_z90_status)
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#define Z90STAT_PCIXCCCOUNT _IOR(Z90_IOCTL_MAGIC, 0x43, int)
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/* unrelated to ICA callers */
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#define Z90QUIESCE _IO(Z90_IOCTL_MAGIC, 0x11)
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/* New status calls */
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#define Z90STAT_TOTALCOUNT _IOR(Z90_IOCTL_MAGIC, 0x40, int)
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#define Z90STAT_PCICACOUNT _IOR(Z90_IOCTL_MAGIC, 0x41, int)
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#define Z90STAT_PCICCCOUNT _IOR(Z90_IOCTL_MAGIC, 0x42, int)
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#define Z90STAT_PCIXCCMCL2COUNT _IOR(Z90_IOCTL_MAGIC, 0x4b, int)
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#define Z90STAT_PCIXCCMCL3COUNT _IOR(Z90_IOCTL_MAGIC, 0x4c, int)
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#define Z90STAT_CEX2CCOUNT _IOR(Z90_IOCTL_MAGIC, 0x4d, int)
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#define Z90STAT_REQUESTQ_COUNT _IOR(Z90_IOCTL_MAGIC, 0x44, int)
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#define Z90STAT_PENDINGQ_COUNT _IOR(Z90_IOCTL_MAGIC, 0x45, int)
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#define Z90STAT_TOTALOPEN_COUNT _IOR(Z90_IOCTL_MAGIC, 0x46, int)
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#define Z90STAT_DOMAIN_INDEX _IOR(Z90_IOCTL_MAGIC, 0x47, int)
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#define Z90STAT_STATUS_MASK _IOR(Z90_IOCTL_MAGIC, 0x48, char[64])
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#define Z90STAT_QDEPTH_MASK _IOR(Z90_IOCTL_MAGIC, 0x49, char[64])
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#define Z90STAT_PERDEV_REQCNT _IOR(Z90_IOCTL_MAGIC, 0x4a, int[64])
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/**
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* local errno definitions
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*/
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#define ENOBUFF 129 // filp->private_data->...>work_elem_p->buffer is NULL
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#define EWORKPEND 130 // user issues ioctl while another pending
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#define ERELEASED 131 // user released while ioctl pending
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#define EQUIESCE 132 // z90crypt quiescing (no more work allowed)
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#define ETIMEOUT 133 // request timed out
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#define EUNKNOWN 134 // some unrecognized error occured (retry may succeed)
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#define EGETBUFF 135 // Error getting buffer or hardware lacks capability
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// (retry in software)
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/**
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* DEPRECATED STRUCTURES
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*/
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/**
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* This structure is DEPRECATED and the corresponding ioctl() has been
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* replaced with individual ioctl()s for each piece of data!
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* This structure will NOT survive past version 1.3.1, so switch to the
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* new ioctl()s.
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*/
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#define MASK_LENGTH 64 // mask length
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struct ica_z90_status {
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int totalcount;
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int leedslitecount; // PCICA
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int leeds2count; // PCICC
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// int PCIXCCCount; is not in struct for backward compatibility
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int requestqWaitCount;
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int pendingqWaitCount;
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int totalOpenCount;
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int cryptoDomain;
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// status: 0=not there, 1=PCICA, 2=PCICC, 3=PCIXCC_MCL2, 4=PCIXCC_MCL3,
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// 5=CEX2C
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unsigned char status[MASK_LENGTH];
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// qdepth: # work elements waiting for each device
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unsigned char qdepth[MASK_LENGTH];
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};
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#endif /* _Z90CRYPT_H_ */
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