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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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af4a72276d
There was an artificial restriction on the card/adapter id to only 6 bits but all the AP commands do support adapter ids with 8 bit. This patch removes this restriction to 64 adapters and now up to 256 adapter can get addressed. Some of the ioctl calls work on the max number of cards possible (which was 64). These ioctls are now deprecated but still supported. All the defines, structs and ioctl interface declarations have been kept for compabibility. There are now new ioctls (and defines for these) with an additional '2' appended which provide the extended versions with 256 cards supported. Signed-off-by: Harald Freudenberger <freude@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
161 lines
4.9 KiB
C
161 lines
4.9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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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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#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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/**
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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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#define ZCRYPT_CEX6 12
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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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long zcrypt_send_cprb(struct ica_xcRB *xcRB);
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void zcrypt_device_status_mask_ext(struct zcrypt_device_status_ext *devstatus);
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#endif /* _ZCRYPT_API_H_ */
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