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2023-12-11 072de836f53be56a70cecf70b43ae43b7ce17376 
 kernel/drivers/s390/crypto/zcrypt_api.h
....@@ -1,8 +1,6 @@
11 /* SPDX-License-Identifier: GPL-2.0+ */
22 /*
3
- *  zcrypt 2.1.0
4
- *
5
- *  Copyright IBM Corp. 2001, 2012
3
+ *  Copyright IBM Corp. 2001, 2019
64  *  Author(s): Robert Burroughs
75  *	       Eric Rossman (edrossma@us.ibm.com)
86  *	       Cornelia Huck <cornelia.huck@de.ibm.com>
....@@ -22,17 +20,8 @@
2220 #include "ap_bus.h"
2321 
2422 /**
25
- * 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.
23
+ * Supported device types
3124  */
32
-#define ZCRYPT_PCICA		1
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-#define ZCRYPT_PCICC		2
34
-#define ZCRYPT_PCIXCC_MCL2	3
35
-#define ZCRYPT_PCIXCC_MCL3	4
3625 #define ZCRYPT_CEX2C		5
3726 #define ZCRYPT_CEX2A		6
3827 #define ZCRYPT_CEX3C		7
....@@ -40,6 +29,7 @@
4029 #define ZCRYPT_CEX4	       10
4130 #define ZCRYPT_CEX5	       11
4231 #define ZCRYPT_CEX6	       12
32
+#define ZCRYPT_CEX7	       13
4333 
4434 /**
4535  * Large random numbers are pulled in 4096 byte chunks from the crypto cards
....@@ -65,13 +55,30 @@
6555 
6656 struct zcrypt_queue;
6757 
58
+/* struct to hold tracking information for a userspace request/response */
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+struct zcrypt_track {
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+	int again_counter;		/* retry attempts counter */
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+	int last_qid;			/* last qid used */
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+	int last_rc;			/* last return code */
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+#ifdef CONFIG_ZCRYPT_DEBUG
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+	struct ap_fi fi;		/* failure injection cmd */
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+#endif
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+};
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+
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+/* defines related to message tracking */
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+#define TRACK_AGAIN_MAX 10
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+#define TRACK_AGAIN_CARD_WEIGHT_PENALTY  1000
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+#define TRACK_AGAIN_QUEUE_WEIGHT_PENALTY 10000
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+
6873 struct zcrypt_ops {
69
-	long (*rsa_modexpo)(struct zcrypt_queue *, struct ica_rsa_modexpo *);
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+	long (*rsa_modexpo)(struct zcrypt_queue *, struct ica_rsa_modexpo *,
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+			    struct ap_message *);
7076 	long (*rsa_modexpo_crt)(struct zcrypt_queue *,
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-				struct ica_rsa_modexpo_crt *);
72
-	long (*send_cprb)(struct zcrypt_queue *, struct ica_xcRB *,
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+				struct ica_rsa_modexpo_crt *,
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+				struct ap_message *);
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+	long (*send_cprb)(bool userspace, struct zcrypt_queue *, struct ica_xcRB *,
7380 			  struct ap_message *);
74
-	long (*send_ep11_cprb)(struct zcrypt_queue *, struct ep11_urb *,
81
+	long (*send_ep11_cprb)(bool userspace, struct zcrypt_queue *, struct ep11_urb *,
7582 			       struct ap_message *);
7683 	long (*rng)(struct zcrypt_queue *, char *, struct ap_message *);
7784 	struct list_head list;		/* zcrypt ops list. */
....@@ -92,7 +99,7 @@
9299 	int min_mod_size;		/* Min number of bits. */
93100 	int max_mod_size;		/* Max number of bits. */
94101 	int max_exp_bit_length;
95
-	int speed_rating[NUM_OPS];	/* Speed idx of crypto ops. */
102
+	const int *speed_rating;	/* Speed idx of crypto ops. */
96103 	atomic_t load;			/* Utilization of the crypto device */
97104 
98105 	int request_count;		/* # current requests. */
....@@ -132,9 +139,6 @@
132139 int zcrypt_card_put(struct zcrypt_card *);
133140 int zcrypt_card_register(struct zcrypt_card *);
134141 void zcrypt_card_unregister(struct zcrypt_card *);
135
-struct zcrypt_card *zcrypt_card_get_best(unsigned int *,
136
-					 unsigned int, unsigned int);
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-void zcrypt_card_put_best(struct zcrypt_card *, unsigned int);
138142 
139143 struct zcrypt_queue *zcrypt_queue_alloc(size_t);
140144 void zcrypt_queue_free(struct zcrypt_queue *);
....@@ -143,8 +147,6 @@
143147 int zcrypt_queue_register(struct zcrypt_queue *);
144148 void zcrypt_queue_unregister(struct zcrypt_queue *);
145149 void zcrypt_queue_force_online(struct zcrypt_queue *, int);
146
-struct zcrypt_queue *zcrypt_queue_get_best(unsigned int, unsigned int);
147
-void  zcrypt_queue_put_best(struct zcrypt_queue *, unsigned int);
148150 
149151 int zcrypt_rng_device_add(void);
150152 void zcrypt_rng_device_remove(void);
....@@ -155,6 +157,31 @@
155157 int zcrypt_api_init(void);
156158 void zcrypt_api_exit(void);
157159 long zcrypt_send_cprb(struct ica_xcRB *xcRB);
160
+long zcrypt_send_ep11_cprb(struct ep11_urb *urb);
158161 void zcrypt_device_status_mask_ext(struct zcrypt_device_status_ext *devstatus);
162
+int zcrypt_device_status_ext(int card, int queue,
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+			     struct zcrypt_device_status_ext *devstatus);
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+
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+static inline unsigned long z_copy_from_user(bool userspace,
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+					     void *to,
167
+					     const void __user *from,
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+					     unsigned long n)
169
+{
170
+	if (likely(userspace))
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+		return copy_from_user(to, from, n);
172
+	memcpy(to, (void __force *) from, n);
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+	return 0;
174
+}
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+
176
+static inline unsigned long z_copy_to_user(bool userspace,
177
+					   void __user *to,
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+					   const void *from,
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+					   unsigned long n)
180
+{
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+	if (likely(userspace))
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+		return copy_to_user(to, from, n);
183
+	memcpy((void __force *) to, from, n);
184
+	return 0;
185
+}
159186 
160187 #endif /* _ZCRYPT_API_H_ */