1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3 * Copyright IBM Corp. 2001, 2012
4 * Author(s): Robert Burroughs
5 * Eric Rossman (edrossma@us.ibm.com)
6 *
7 * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
8 * Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com>
9 * MSGTYPE restruct: Holger Dengler <hd@linux.vnet.ibm.com>
10 */
11
12 #ifndef _ZCRYPT_MSGTYPE6_H_
13 #define _ZCRYPT_MSGTYPE6_H_
14
15 #include <asm/zcrypt.h>
16
17 #define MSGTYPE06_NAME "zcrypt_msgtype6"
18 #define MSGTYPE06_VARIANT_DEFAULT 0
19 #define MSGTYPE06_VARIANT_NORNG 1
20 #define MSGTYPE06_VARIANT_EP11 2
21
22 #define MSGTYPE06_MAX_MSG_SIZE (12*1024)
23
24 /**
25 * The type 6 message family is associated with CEXxC/CEXxP cards.
26 *
27 * It contains a message header followed by a CPRB, both of which
28 * are described below.
29 *
30 * Note that all reserved fields must be zeroes.
31 */
32 struct type6_hdr {
33 unsigned char reserved1; /* 0x00 */
34 unsigned char type; /* 0x06 */
35 unsigned char reserved2[2]; /* 0x0000 */
36 unsigned char right[4]; /* 0x00000000 */
37 unsigned char reserved3[2]; /* 0x0000 */
38 unsigned char reserved4[2]; /* 0x0000 */
39 unsigned char apfs[4]; /* 0x00000000 */
40 unsigned int offset1; /* 0x00000058 (offset to CPRB) */
41 unsigned int offset2; /* 0x00000000 */
42 unsigned int offset3; /* 0x00000000 */
43 unsigned int offset4; /* 0x00000000 */
44 unsigned char agent_id[16]; /* 0x4341000000000000 */
45 /* 0x0000000000000000 */
46 unsigned char rqid[2]; /* rqid. internal to 603 */
47 unsigned char reserved5[2]; /* 0x0000 */
48 unsigned char function_code[2]; /* for PKD, 0x5044 (ascii 'PD') */
49 unsigned char reserved6[2]; /* 0x0000 */
50 unsigned int ToCardLen1; /* (request CPRB len + 3) & -4 */
51 unsigned int ToCardLen2; /* db len 0x00000000 for PKD */
52 unsigned int ToCardLen3; /* 0x00000000 */
53 unsigned int ToCardLen4; /* 0x00000000 */
54 unsigned int FromCardLen1; /* response buffer length */
55 unsigned int FromCardLen2; /* db len 0x00000000 for PKD */
56 unsigned int FromCardLen3; /* 0x00000000 */
57 unsigned int FromCardLen4; /* 0x00000000 */
58 } __packed;
59
60 /**
61 * The type 86 message family is associated with CEXxC/CEXxP cards.
62 *
63 * It contains a message header followed by a CPRB. The CPRB is
64 * the same as the request CPRB, which is described above.
65 *
66 * If format is 1, an error condition exists and no data beyond
67 * the 8-byte message header is of interest.
68 *
69 * The non-error message is shown below.
70 *
71 * Note that all reserved fields must be zeroes.
72 */
73 struct type86_hdr {
74 unsigned char reserved1; /* 0x00 */
75 unsigned char type; /* 0x86 */
76 unsigned char format; /* 0x01 (error) or 0x02 (ok) */
77 unsigned char reserved2; /* 0x00 */
78 unsigned char reply_code; /* reply code (see above) */
79 unsigned char reserved3[3]; /* 0x000000 */
80 } __packed;
81
82 #define TYPE86_RSP_CODE 0x86
83 #define TYPE87_RSP_CODE 0x87
84 #define TYPE86_FMT2 0x02
85
86 struct type86_fmt2_ext {
87 unsigned char reserved[4]; /* 0x00000000 */
88 unsigned char apfs[4]; /* final status */
89 unsigned int count1; /* length of CPRB + parameters */
90 unsigned int offset1; /* offset to CPRB */
91 unsigned int count2; /* 0x00000000 */
92 unsigned int offset2; /* db offset 0x00000000 for PKD */
93 unsigned int count3; /* 0x00000000 */
94 unsigned int offset3; /* 0x00000000 */
95 unsigned int count4; /* 0x00000000 */
96 unsigned int offset4; /* 0x00000000 */
97 } __packed;
98
99 unsigned int get_cprb_fc(struct ica_xcRB *, struct ap_message *,
100 unsigned int *, unsigned short **);
101 unsigned int get_ep11cprb_fc(struct ep11_urb *, struct ap_message *,
102 unsigned int *);
103 unsigned int get_rng_fc(struct ap_message *, int *, unsigned int *);
104
105 #define LOW 10
106 #define MEDIUM 100
107 #define HIGH 500
108
109 int speed_idx_cca(int);
110 int speed_idx_ep11(int);
111
112 /**
113 * Prepare a type6 CPRB message for random number generation
114 *
115 * @ap_dev: AP device pointer
116 * @ap_msg: pointer to AP message
117 */
118 static inline void rng_type6CPRB_msgX(struct ap_message *ap_msg,
119 unsigned int random_number_length,
120 unsigned int *domain)
121 {
122 struct {
123 struct type6_hdr hdr;
124 struct CPRBX cprbx;
125 char function_code[2];
126 short int rule_length;
127 char rule[8];
128 short int verb_length;
129 short int key_length;
130 } __packed * msg = ap_msg->message;
131 static struct type6_hdr static_type6_hdrX = {
132 .type = 0x06,
133 .offset1 = 0x00000058,
134 .agent_id = {'C', 'A'},
135 .function_code = {'R', 'L'},
136 .ToCardLen1 = sizeof(*msg) - sizeof(msg->hdr),
137 .FromCardLen1 = sizeof(*msg) - sizeof(msg->hdr),
138 };
139 static struct CPRBX local_cprbx = {
140 .cprb_len = 0x00dc,
141 .cprb_ver_id = 0x02,
142 .func_id = {0x54, 0x32},
143 .req_parml = sizeof(*msg) - sizeof(msg->hdr) -
144 sizeof(msg->cprbx),
145 .rpl_msgbl = sizeof(*msg) - sizeof(msg->hdr),
146 };
147
148 msg->hdr = static_type6_hdrX;
149 msg->hdr.FromCardLen2 = random_number_length,
150 msg->cprbx = local_cprbx;
151 msg->cprbx.rpl_datal = random_number_length,
152 memcpy(msg->function_code, msg->hdr.function_code, 0x02);
153 msg->rule_length = 0x0a;
154 memcpy(msg->rule, "RANDOM ", 8);
155 msg->verb_length = 0x02;
156 msg->key_length = 0x02;
157 ap_msg->length = sizeof(*msg);
158 *domain = (unsigned short)msg->cprbx.domain;
159 }
160
161 void zcrypt_msgtype6_init(void);
162 void zcrypt_msgtype6_exit(void);
163
164 #endif /* _ZCRYPT_MSGTYPE6_H_ */