mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
ee410de890
Some cleanup in the s390 zcrypt device driver:
- Removed fragments of pcixx crypto card code. This code
can't be reached anymore because the hardware detection
function does not recognize crypto cards < CEX2 since
commit f56545430736 ("s390/zcrypt: Introduce QACT support
for AP bus devices.")
- Rename of some files and driver names which where still
reflecting pcixx support to cex2a/cex2c.
- Removed all the zcrypt version strings in the file headers.
There is only one place left - the zcrypt.h header file is
now the only place for zcrypt device driver version info.
- Zcrypt version pump up from 2.2.0 to 2.2.1.
Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
150 lines
4.5 KiB
C
150 lines
4.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
|
|
/*
|
|
* Copyright IBM Corp. 2001, 2018
|
|
* Author(s): Robert Burroughs
|
|
* Eric Rossman (edrossma@us.ibm.com)
|
|
* Cornelia Huck <cornelia.huck@de.ibm.com>
|
|
*
|
|
* Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
|
|
* Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com>
|
|
* Ralph Wuerthner <rwuerthn@de.ibm.com>
|
|
* MSGTYPE restruct: Holger Dengler <hd@linux.vnet.ibm.com>
|
|
*/
|
|
|
|
#ifndef _ZCRYPT_API_H_
|
|
#define _ZCRYPT_API_H_
|
|
|
|
#include <linux/atomic.h>
|
|
#include <asm/debug.h>
|
|
#include <asm/zcrypt.h>
|
|
#include "ap_bus.h"
|
|
|
|
/**
|
|
* Supported device types
|
|
*/
|
|
#define ZCRYPT_CEX2C 5
|
|
#define ZCRYPT_CEX2A 6
|
|
#define ZCRYPT_CEX3C 7
|
|
#define ZCRYPT_CEX3A 8
|
|
#define ZCRYPT_CEX4 10
|
|
#define ZCRYPT_CEX5 11
|
|
#define ZCRYPT_CEX6 12
|
|
|
|
/**
|
|
* Large random numbers are pulled in 4096 byte chunks from the crypto cards
|
|
* and stored in a page. Be careful when increasing this buffer due to size
|
|
* limitations for AP requests.
|
|
*/
|
|
#define ZCRYPT_RNG_BUFFER_SIZE 4096
|
|
|
|
/*
|
|
* Identifier for Crypto Request Performance Index
|
|
*/
|
|
enum crypto_ops {
|
|
MEX_1K,
|
|
MEX_2K,
|
|
MEX_4K,
|
|
CRT_1K,
|
|
CRT_2K,
|
|
CRT_4K,
|
|
HWRNG,
|
|
SECKEY,
|
|
NUM_OPS
|
|
};
|
|
|
|
struct zcrypt_queue;
|
|
|
|
struct zcrypt_ops {
|
|
long (*rsa_modexpo)(struct zcrypt_queue *, struct ica_rsa_modexpo *);
|
|
long (*rsa_modexpo_crt)(struct zcrypt_queue *,
|
|
struct ica_rsa_modexpo_crt *);
|
|
long (*send_cprb)(struct zcrypt_queue *, struct ica_xcRB *,
|
|
struct ap_message *);
|
|
long (*send_ep11_cprb)(struct zcrypt_queue *, struct ep11_urb *,
|
|
struct ap_message *);
|
|
long (*rng)(struct zcrypt_queue *, char *, struct ap_message *);
|
|
struct list_head list; /* zcrypt ops list. */
|
|
struct module *owner;
|
|
int variant;
|
|
char name[128];
|
|
};
|
|
|
|
struct zcrypt_card {
|
|
struct list_head list; /* Device list. */
|
|
struct list_head zqueues; /* List of zcrypt queues */
|
|
struct kref refcount; /* device refcounting */
|
|
struct ap_card *card; /* The "real" ap card device. */
|
|
int online; /* User online/offline */
|
|
|
|
int user_space_type; /* User space device id. */
|
|
char *type_string; /* User space device name. */
|
|
int min_mod_size; /* Min number of bits. */
|
|
int max_mod_size; /* Max number of bits. */
|
|
int max_exp_bit_length;
|
|
int speed_rating[NUM_OPS]; /* Speed idx of crypto ops. */
|
|
atomic_t load; /* Utilization of the crypto device */
|
|
|
|
int request_count; /* # current requests. */
|
|
};
|
|
|
|
struct zcrypt_queue {
|
|
struct list_head list; /* Device list. */
|
|
struct kref refcount; /* device refcounting */
|
|
struct zcrypt_card *zcard;
|
|
struct zcrypt_ops *ops; /* Crypto operations. */
|
|
struct ap_queue *queue; /* The "real" ap queue device. */
|
|
int online; /* User online/offline */
|
|
|
|
atomic_t load; /* Utilization of the crypto device */
|
|
|
|
int request_count; /* # current requests. */
|
|
|
|
struct ap_message reply; /* Per-device reply structure. */
|
|
};
|
|
|
|
/* transport layer rescanning */
|
|
extern atomic_t zcrypt_rescan_req;
|
|
|
|
extern spinlock_t zcrypt_list_lock;
|
|
extern int zcrypt_device_count;
|
|
extern struct list_head zcrypt_card_list;
|
|
|
|
#define for_each_zcrypt_card(_zc) \
|
|
list_for_each_entry(_zc, &zcrypt_card_list, list)
|
|
|
|
#define for_each_zcrypt_queue(_zq, _zc) \
|
|
list_for_each_entry(_zq, &(_zc)->zqueues, list)
|
|
|
|
struct zcrypt_card *zcrypt_card_alloc(void);
|
|
void zcrypt_card_free(struct zcrypt_card *);
|
|
void zcrypt_card_get(struct zcrypt_card *);
|
|
int zcrypt_card_put(struct zcrypt_card *);
|
|
int zcrypt_card_register(struct zcrypt_card *);
|
|
void zcrypt_card_unregister(struct zcrypt_card *);
|
|
struct zcrypt_card *zcrypt_card_get_best(unsigned int *,
|
|
unsigned int, unsigned int);
|
|
void zcrypt_card_put_best(struct zcrypt_card *, unsigned int);
|
|
|
|
struct zcrypt_queue *zcrypt_queue_alloc(size_t);
|
|
void zcrypt_queue_free(struct zcrypt_queue *);
|
|
void zcrypt_queue_get(struct zcrypt_queue *);
|
|
int zcrypt_queue_put(struct zcrypt_queue *);
|
|
int zcrypt_queue_register(struct zcrypt_queue *);
|
|
void zcrypt_queue_unregister(struct zcrypt_queue *);
|
|
void zcrypt_queue_force_online(struct zcrypt_queue *, int);
|
|
struct zcrypt_queue *zcrypt_queue_get_best(unsigned int, unsigned int);
|
|
void zcrypt_queue_put_best(struct zcrypt_queue *, unsigned int);
|
|
|
|
int zcrypt_rng_device_add(void);
|
|
void zcrypt_rng_device_remove(void);
|
|
|
|
void zcrypt_msgtype_register(struct zcrypt_ops *);
|
|
void zcrypt_msgtype_unregister(struct zcrypt_ops *);
|
|
struct zcrypt_ops *zcrypt_msgtype(unsigned char *, int);
|
|
int zcrypt_api_init(void);
|
|
void zcrypt_api_exit(void);
|
|
long zcrypt_send_cprb(struct ica_xcRB *xcRB);
|
|
void zcrypt_device_status_mask_ext(struct zcrypt_device_status_ext *devstatus);
|
|
|
|
#endif /* _ZCRYPT_API_H_ */
|