1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * Copyright IBM Corp. 2001, 2018
4 * Author(s): Robert Burroughs
14 #ifndef _ZCRYPT_API_H_
15 #define _ZCRYPT_API_H_
17 #include <linux/atomic.h>
18 #include <asm/debug.h>
19 #include <asm/zcrypt.h>
23 * Supported device types
25 #define ZCRYPT_CEX2C 5
26 #define ZCRYPT_CEX2A 6
27 #define ZCRYPT_CEX3C 7
28 #define ZCRYPT_CEX3A 8
29 #define ZCRYPT_CEX4 10
30 #define ZCRYPT_CEX5 11
31 #define ZCRYPT_CEX6 12
34 * Large random numbers are pulled in 4096 byte chunks from the crypto cards
35 * and stored in a page. Be careful when increasing this buffer due to size
36 * limitations for AP requests.
38 #define ZCRYPT_RNG_BUFFER_SIZE 4096
41 * Identifier for Crypto Request Performance Index
58 long (*rsa_modexpo)(struct zcrypt_queue *, struct ica_rsa_modexpo *);
59 long (*rsa_modexpo_crt)(struct zcrypt_queue *,
60 struct ica_rsa_modexpo_crt *);
61 long (*send_cprb)(struct zcrypt_queue *, struct ica_xcRB *,
63 long (*send_ep11_cprb)(struct zcrypt_queue *, struct ep11_urb *,
65 long (*rng)(struct zcrypt_queue *, char *, struct ap_message *);
66 struct list_head list; /* zcrypt ops list. */
73 struct list_head list; /* Device list. */
74 struct list_head zqueues; /* List of zcrypt queues */
75 struct kref refcount; /* device refcounting */
76 struct ap_card *card; /* The "real" ap card device. */
77 int online; /* User online/offline */
79 int user_space_type; /* User space device id. */
80 char *type_string; /* User space device name. */
81 int min_mod_size; /* Min number of bits. */
82 int max_mod_size; /* Max number of bits. */
83 int max_exp_bit_length;
84 int speed_rating[NUM_OPS]; /* Speed idx of crypto ops. */
85 atomic_t load; /* Utilization of the crypto device */
87 int request_count; /* # current requests. */
91 struct list_head list; /* Device list. */
92 struct kref refcount; /* device refcounting */
93 struct zcrypt_card *zcard;
94 struct zcrypt_ops *ops; /* Crypto operations. */
95 struct ap_queue *queue; /* The "real" ap queue device. */
96 int online; /* User online/offline */
98 atomic_t load; /* Utilization of the crypto device */
100 int request_count; /* # current requests. */
102 struct ap_message reply; /* Per-device reply structure. */
105 /* transport layer rescanning */
106 extern atomic_t zcrypt_rescan_req;
108 extern spinlock_t zcrypt_list_lock;
109 extern int zcrypt_device_count;
110 extern struct list_head zcrypt_card_list;
112 #define for_each_zcrypt_card(_zc) \
113 list_for_each_entry(_zc, &zcrypt_card_list, list)
115 #define for_each_zcrypt_queue(_zq, _zc) \
116 list_for_each_entry(_zq, &(_zc)->zqueues, list)
118 struct zcrypt_card *zcrypt_card_alloc(void);
119 void zcrypt_card_free(struct zcrypt_card *);
120 void zcrypt_card_get(struct zcrypt_card *);
121 int zcrypt_card_put(struct zcrypt_card *);
122 int zcrypt_card_register(struct zcrypt_card *);
123 void zcrypt_card_unregister(struct zcrypt_card *);
124 struct zcrypt_card *zcrypt_card_get_best(unsigned int *,
125 unsigned int, unsigned int);
126 void zcrypt_card_put_best(struct zcrypt_card *, unsigned int);
128 struct zcrypt_queue *zcrypt_queue_alloc(size_t);
129 void zcrypt_queue_free(struct zcrypt_queue *);
130 void zcrypt_queue_get(struct zcrypt_queue *);
131 int zcrypt_queue_put(struct zcrypt_queue *);
132 int zcrypt_queue_register(struct zcrypt_queue *);
133 void zcrypt_queue_unregister(struct zcrypt_queue *);
134 void zcrypt_queue_force_online(struct zcrypt_queue *, int);
135 struct zcrypt_queue *zcrypt_queue_get_best(unsigned int, unsigned int);
136 void zcrypt_queue_put_best(struct zcrypt_queue *, unsigned int);
138 int zcrypt_rng_device_add(void);
139 void zcrypt_rng_device_remove(void);
141 void zcrypt_msgtype_register(struct zcrypt_ops *);
142 void zcrypt_msgtype_unregister(struct zcrypt_ops *);
143 struct zcrypt_ops *zcrypt_msgtype(unsigned char *, int);
144 int zcrypt_api_init(void);
145 void zcrypt_api_exit(void);
146 long zcrypt_send_cprb(struct ica_xcRB *xcRB);
147 void zcrypt_device_status_mask_ext(struct zcrypt_device_status_ext *devstatus);
149 #endif /* _ZCRYPT_API_H_ */