1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * Copyright IBM Corp. 2001, 2019
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
32 #define ZCRYPT_CEX7 13
35 * Large random numbers are pulled in 4096 byte chunks from the crypto cards
36 * and stored in a page. Be careful when increasing this buffer due to size
37 * limitations for AP requests.
39 #define ZCRYPT_RNG_BUFFER_SIZE 4096
42 * Identifier for Crypto Request Performance Index
59 long (*rsa_modexpo)(struct zcrypt_queue *, struct ica_rsa_modexpo *);
60 long (*rsa_modexpo_crt)(struct zcrypt_queue *,
61 struct ica_rsa_modexpo_crt *);
62 long (*send_cprb)(struct zcrypt_queue *, struct ica_xcRB *,
64 long (*send_ep11_cprb)(struct zcrypt_queue *, struct ep11_urb *,
66 long (*rng)(struct zcrypt_queue *, char *, struct ap_message *);
67 struct list_head list; /* zcrypt ops list. */
74 struct list_head list; /* Device list. */
75 struct list_head zqueues; /* List of zcrypt queues */
76 struct kref refcount; /* device refcounting */
77 struct ap_card *card; /* The "real" ap card device. */
78 int online; /* User online/offline */
80 int user_space_type; /* User space device id. */
81 char *type_string; /* User space device name. */
82 int min_mod_size; /* Min number of bits. */
83 int max_mod_size; /* Max number of bits. */
84 int max_exp_bit_length;
85 int speed_rating[NUM_OPS]; /* Speed idx of crypto ops. */
86 atomic_t load; /* Utilization of the crypto device */
88 int request_count; /* # current requests. */
92 struct list_head list; /* Device list. */
93 struct kref refcount; /* device refcounting */
94 struct zcrypt_card *zcard;
95 struct zcrypt_ops *ops; /* Crypto operations. */
96 struct ap_queue *queue; /* The "real" ap queue device. */
97 int online; /* User online/offline */
99 atomic_t load; /* Utilization of the crypto device */
101 int request_count; /* # current requests. */
103 struct ap_message reply; /* Per-device reply structure. */
106 /* transport layer rescanning */
107 extern atomic_t zcrypt_rescan_req;
109 extern spinlock_t zcrypt_list_lock;
110 extern int zcrypt_device_count;
111 extern struct list_head zcrypt_card_list;
113 #define for_each_zcrypt_card(_zc) \
114 list_for_each_entry(_zc, &zcrypt_card_list, list)
116 #define for_each_zcrypt_queue(_zq, _zc) \
117 list_for_each_entry(_zq, &(_zc)->zqueues, list)
119 struct zcrypt_card *zcrypt_card_alloc(void);
120 void zcrypt_card_free(struct zcrypt_card *);
121 void zcrypt_card_get(struct zcrypt_card *);
122 int zcrypt_card_put(struct zcrypt_card *);
123 int zcrypt_card_register(struct zcrypt_card *);
124 void zcrypt_card_unregister(struct zcrypt_card *);
126 struct zcrypt_queue *zcrypt_queue_alloc(size_t);
127 void zcrypt_queue_free(struct zcrypt_queue *);
128 void zcrypt_queue_get(struct zcrypt_queue *);
129 int zcrypt_queue_put(struct zcrypt_queue *);
130 int zcrypt_queue_register(struct zcrypt_queue *);
131 void zcrypt_queue_unregister(struct zcrypt_queue *);
132 void zcrypt_queue_force_online(struct zcrypt_queue *, int);
134 int zcrypt_rng_device_add(void);
135 void zcrypt_rng_device_remove(void);
137 void zcrypt_msgtype_register(struct zcrypt_ops *);
138 void zcrypt_msgtype_unregister(struct zcrypt_ops *);
139 struct zcrypt_ops *zcrypt_msgtype(unsigned char *, int);
140 int zcrypt_api_init(void);
141 void zcrypt_api_exit(void);
142 long zcrypt_send_cprb(struct ica_xcRB *xcRB);
143 void zcrypt_device_status_mask_ext(struct zcrypt_device_status_ext *devstatus);
144 int zcrypt_device_status_ext(int card, int queue,
145 struct zcrypt_device_status_ext *devstatus);
147 #endif /* _ZCRYPT_API_H_ */