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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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cccd85bfb7
Rework the debug feature calls and initialization. There are now two debug feature entries used by the zcrypt code. The first is 'ap' with all the AP bus related stuff and the second is 'zcrypt' with all the zcrypt and devices and driver related entries. However, there isn't much traffic on both debug features. The ap bus code emits only some debug info and for zcrypt devices on appearance and disappearance there is an entry written. The new dbf invocations use the sprintf buffer layout, whereas the old implementation used the ascii dbf buffer. There are now 5*8=40 bytes used for each entry, resulting in 5 parameters per call. As the sprintf buffer needs a format string the first parameter provides this and so up to 4 more parameters can be used. Alltogehter the new layout should be much more human readable for customers and test. Signed-off-by: Harald Freudenberger <freude@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
195 lines
6.1 KiB
C
195 lines
6.1 KiB
C
/*
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* zcrypt 2.1.0
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*
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* Copyright IBM Corp. 2001, 2012
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* Author(s): Robert Burroughs
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* Eric Rossman (edrossma@us.ibm.com)
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* Cornelia Huck <cornelia.huck@de.ibm.com>
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*
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* Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
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* Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com>
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* Ralph Wuerthner <rwuerthn@de.ibm.com>
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* MSGTYPE restruct: Holger Dengler <hd@linux.vnet.ibm.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef _ZCRYPT_API_H_
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#define _ZCRYPT_API_H_
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#include <linux/atomic.h>
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#include <asm/debug.h>
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#include <asm/zcrypt.h>
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#include "ap_bus.h"
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/* deprecated status calls */
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#define ICAZ90STATUS _IOR(ZCRYPT_IOCTL_MAGIC, 0x10, struct ica_z90_status)
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#define Z90STAT_PCIXCCCOUNT _IOR(ZCRYPT_IOCTL_MAGIC, 0x43, int)
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/**
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* This structure is deprecated and the corresponding ioctl() has been
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* replaced with individual ioctl()s for each piece of data!
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*/
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struct ica_z90_status {
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int totalcount;
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int leedslitecount; // PCICA
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int leeds2count; // PCICC
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// int PCIXCCCount; is not in struct for backward compatibility
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int requestqWaitCount;
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int pendingqWaitCount;
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int totalOpenCount;
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int cryptoDomain;
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// status: 0=not there, 1=PCICA, 2=PCICC, 3=PCIXCC_MCL2, 4=PCIXCC_MCL3,
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// 5=CEX2C
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unsigned char status[64];
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// qdepth: # work elements waiting for each device
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unsigned char qdepth[64];
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};
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/**
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* device type for an actual device is either PCICA, PCICC, PCIXCC_MCL2,
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* PCIXCC_MCL3, CEX2C, or CEX2A
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*
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* NOTE: PCIXCC_MCL3 refers to a PCIXCC with May 2004 version of Licensed
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* Internal Code (LIC) (EC J12220 level 29).
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* PCIXCC_MCL2 refers to any LIC before this level.
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*/
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#define ZCRYPT_PCICA 1
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#define ZCRYPT_PCICC 2
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#define ZCRYPT_PCIXCC_MCL2 3
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#define ZCRYPT_PCIXCC_MCL3 4
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#define ZCRYPT_CEX2C 5
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#define ZCRYPT_CEX2A 6
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#define ZCRYPT_CEX3C 7
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#define ZCRYPT_CEX3A 8
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#define ZCRYPT_CEX4 10
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#define ZCRYPT_CEX5 11
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/**
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* Large random numbers are pulled in 4096 byte chunks from the crypto cards
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* and stored in a page. Be careful when increasing this buffer due to size
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* limitations for AP requests.
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*/
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#define ZCRYPT_RNG_BUFFER_SIZE 4096
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/*
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* Identifier for Crypto Request Performance Index
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*/
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enum crypto_ops {
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MEX_1K,
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MEX_2K,
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MEX_4K,
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CRT_1K,
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CRT_2K,
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CRT_4K,
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HWRNG,
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SECKEY,
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NUM_OPS
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};
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struct zcrypt_queue;
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struct zcrypt_ops {
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long (*rsa_modexpo)(struct zcrypt_queue *, struct ica_rsa_modexpo *);
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long (*rsa_modexpo_crt)(struct zcrypt_queue *,
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struct ica_rsa_modexpo_crt *);
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long (*send_cprb)(struct zcrypt_queue *, struct ica_xcRB *,
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struct ap_message *);
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long (*send_ep11_cprb)(struct zcrypt_queue *, struct ep11_urb *,
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struct ap_message *);
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long (*rng)(struct zcrypt_queue *, char *, struct ap_message *);
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struct list_head list; /* zcrypt ops list. */
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struct module *owner;
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int variant;
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char name[128];
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};
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struct zcrypt_card {
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struct list_head list; /* Device list. */
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struct list_head zqueues; /* List of zcrypt queues */
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struct kref refcount; /* device refcounting */
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struct ap_card *card; /* The "real" ap card device. */
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int online; /* User online/offline */
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int user_space_type; /* User space device id. */
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char *type_string; /* User space device name. */
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int min_mod_size; /* Min number of bits. */
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int max_mod_size; /* Max number of bits. */
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int max_exp_bit_length;
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int speed_rating[NUM_OPS]; /* Speed idx of crypto ops. */
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atomic_t load; /* Utilization of the crypto device */
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int request_count; /* # current requests. */
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};
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struct zcrypt_queue {
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struct list_head list; /* Device list. */
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struct kref refcount; /* device refcounting */
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struct zcrypt_card *zcard;
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struct zcrypt_ops *ops; /* Crypto operations. */
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struct ap_queue *queue; /* The "real" ap queue device. */
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int online; /* User online/offline */
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atomic_t load; /* Utilization of the crypto device */
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int request_count; /* # current requests. */
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struct ap_message reply; /* Per-device reply structure. */
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};
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/* transport layer rescanning */
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extern atomic_t zcrypt_rescan_req;
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extern spinlock_t zcrypt_list_lock;
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extern int zcrypt_device_count;
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extern struct list_head zcrypt_card_list;
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#define for_each_zcrypt_card(_zc) \
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list_for_each_entry(_zc, &zcrypt_card_list, list)
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#define for_each_zcrypt_queue(_zq, _zc) \
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list_for_each_entry(_zq, &(_zc)->zqueues, list)
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struct zcrypt_card *zcrypt_card_alloc(void);
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void zcrypt_card_free(struct zcrypt_card *);
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void zcrypt_card_get(struct zcrypt_card *);
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int zcrypt_card_put(struct zcrypt_card *);
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int zcrypt_card_register(struct zcrypt_card *);
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void zcrypt_card_unregister(struct zcrypt_card *);
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struct zcrypt_card *zcrypt_card_get_best(unsigned int *,
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unsigned int, unsigned int);
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void zcrypt_card_put_best(struct zcrypt_card *, unsigned int);
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struct zcrypt_queue *zcrypt_queue_alloc(size_t);
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void zcrypt_queue_free(struct zcrypt_queue *);
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void zcrypt_queue_get(struct zcrypt_queue *);
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int zcrypt_queue_put(struct zcrypt_queue *);
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int zcrypt_queue_register(struct zcrypt_queue *);
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void zcrypt_queue_unregister(struct zcrypt_queue *);
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void zcrypt_queue_force_online(struct zcrypt_queue *, int);
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struct zcrypt_queue *zcrypt_queue_get_best(unsigned int, unsigned int);
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void zcrypt_queue_put_best(struct zcrypt_queue *, unsigned int);
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int zcrypt_rng_device_add(void);
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void zcrypt_rng_device_remove(void);
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void zcrypt_msgtype_register(struct zcrypt_ops *);
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void zcrypt_msgtype_unregister(struct zcrypt_ops *);
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struct zcrypt_ops *zcrypt_msgtype(unsigned char *, int);
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int zcrypt_api_init(void);
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void zcrypt_api_exit(void);
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#endif /* _ZCRYPT_API_H_ */
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