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 | /** |
23 | * The type 6 message family is associated with CEXxC/CEXxP cards. |
24 | * |
25 | * It contains a message header followed by a CPRB, both of which |
26 | * are described below. |
27 | * |
28 | * Note that all reserved fields must be zeroes. |
29 | */ |
30 | struct type6_hdr { |
31 | unsigned char reserved1; /* 0x00 */ |
32 | unsigned char type; /* 0x06 */ |
33 | unsigned char reserved2[2]; /* 0x0000 */ |
34 | unsigned char right[4]; /* 0x00000000 */ |
35 | unsigned char reserved3[2]; /* 0x0000 */ |
36 | unsigned char reserved4[2]; /* 0x0000 */ |
37 | unsigned char apfs[4]; /* 0x00000000 */ |
38 | unsigned int offset1; /* 0x00000058 (offset to CPRB) */ |
39 | unsigned int offset2; /* 0x00000000 */ |
40 | unsigned int offset3; /* 0x00000000 */ |
41 | unsigned int offset4; /* 0x00000000 */ |
42 | unsigned char agent_id[16]; /* 0x4341000000000000 */ |
43 | /* 0x0000000000000000 */ |
44 | unsigned char rqid[2]; /* rqid. internal to 603 */ |
45 | unsigned char reserved5[2]; /* 0x0000 */ |
46 | unsigned char function_code[2]; /* for PKD, 0x5044 (ascii 'PD') */ |
47 | unsigned char reserved6[2]; /* 0x0000 */ |
48 | unsigned int tocardlen1; /* (request CPRB len + 3) & -4 */ |
49 | unsigned int tocardlen2; /* db len 0x00000000 for PKD */ |
50 | unsigned int tocardlen3; /* 0x00000000 */ |
51 | unsigned int tocardlen4; /* 0x00000000 */ |
52 | unsigned int fromcardlen1; /* response buffer length */ |
53 | unsigned int fromcardlen2; /* db len 0x00000000 for PKD */ |
54 | unsigned int fromcardlen3; /* 0x00000000 */ |
55 | unsigned int fromcardlen4; /* 0x00000000 */ |
56 | } __packed; |
57 | |
58 | /** |
59 | * The type 86 message family is associated with CEXxC/CEXxP cards. |
60 | * |
61 | * It contains a message header followed by a CPRB. The CPRB is |
62 | * the same as the request CPRB, which is described above. |
63 | * |
64 | * If format is 1, an error condition exists and no data beyond |
65 | * the 8-byte message header is of interest. |
66 | * |
67 | * The non-error message is shown below. |
68 | * |
69 | * Note that all reserved fields must be zeroes. |
70 | */ |
71 | struct type86_hdr { |
72 | unsigned char reserved1; /* 0x00 */ |
73 | unsigned char type; /* 0x86 */ |
74 | unsigned char format; /* 0x01 (error) or 0x02 (ok) */ |
75 | unsigned char reserved2; /* 0x00 */ |
76 | unsigned char reply_code; /* reply code (see above) */ |
77 | unsigned char reserved3[3]; /* 0x000000 */ |
78 | } __packed; |
79 | |
80 | #define TYPE86_RSP_CODE 0x86 |
81 | #define TYPE87_RSP_CODE 0x87 |
82 | #define TYPE86_FMT2 0x02 |
83 | |
84 | struct type86_fmt2_ext { |
85 | unsigned char reserved[4]; /* 0x00000000 */ |
86 | unsigned char apfs[4]; /* final status */ |
87 | unsigned int count1; /* length of CPRB + parameters */ |
88 | unsigned int offset1; /* offset to CPRB */ |
89 | unsigned int count2; /* 0x00000000 */ |
90 | unsigned int offset2; /* db offset 0x00000000 for PKD */ |
91 | unsigned int count3; /* 0x00000000 */ |
92 | unsigned int offset3; /* 0x00000000 */ |
93 | unsigned int count4; /* 0x00000000 */ |
94 | unsigned int offset4; /* 0x00000000 */ |
95 | } __packed; |
96 | |
97 | int prep_cca_ap_msg(bool userspace, struct ica_xcRB *xcrb, |
98 | struct ap_message *ap_msg, |
99 | unsigned int *fc, unsigned short **dom); |
100 | int prep_ep11_ap_msg(bool userspace, struct ep11_urb *xcrb, |
101 | struct ap_message *ap_msg, |
102 | unsigned int *fc, unsigned int *dom); |
103 | int prep_rng_ap_msg(struct ap_message *ap_msg, |
104 | int *fc, unsigned int *dom); |
105 | |
106 | #define LOW 10 |
107 | #define MEDIUM 100 |
108 | #define HIGH 500 |
109 | |
110 | int speed_idx_cca(int); |
111 | int speed_idx_ep11(int); |
112 | |
113 | /** |
114 | * Prepare a type6 CPRB message for random number generation |
115 | * |
116 | * @ap_dev: AP device pointer |
117 | * @ap_msg: pointer to AP message |
118 | */ |
119 | static inline void rng_type6cprb_msgx(struct ap_message *ap_msg, |
120 | unsigned int random_number_length, |
121 | unsigned int *domain) |
122 | { |
123 | struct { |
124 | struct type6_hdr hdr; |
125 | struct CPRBX cprbx; |
126 | char function_code[2]; |
127 | short int rule_length; |
128 | char rule[8]; |
129 | short int verb_length; |
130 | short int key_length; |
131 | } __packed * msg = ap_msg->msg; |
132 | static struct type6_hdr static_type6_hdrX = { |
133 | .type = 0x06, |
134 | .offset1 = 0x00000058, |
135 | .agent_id = {'C', 'A'}, |
136 | .function_code = {'R', 'L'}, |
137 | .tocardlen1 = sizeof(*msg) - sizeof(msg->hdr), |
138 | .fromcardlen1 = sizeof(*msg) - sizeof(msg->hdr), |
139 | }; |
140 | static struct CPRBX local_cprbx = { |
141 | .cprb_len = 0x00dc, |
142 | .cprb_ver_id = 0x02, |
143 | .func_id = {0x54, 0x32}, |
144 | .req_parml = sizeof(*msg) - sizeof(msg->hdr) - |
145 | sizeof(msg->cprbx), |
146 | .rpl_msgbl = sizeof(*msg) - sizeof(msg->hdr), |
147 | }; |
148 | |
149 | msg->hdr = static_type6_hdrX; |
150 | msg->hdr.fromcardlen2 = random_number_length; |
151 | msg->cprbx = local_cprbx; |
152 | msg->cprbx.rpl_datal = random_number_length; |
153 | memcpy(msg->function_code, msg->hdr.function_code, 0x02); |
154 | msg->rule_length = 0x0a; |
155 | memcpy(msg->rule, "RANDOM " , 8); |
156 | msg->verb_length = 0x02; |
157 | msg->key_length = 0x02; |
158 | ap_msg->len = sizeof(*msg); |
159 | *domain = (unsigned short)msg->cprbx.domain; |
160 | } |
161 | |
162 | void zcrypt_msgtype6_init(void); |
163 | void zcrypt_msgtype6_exit(void); |
164 | |
165 | #endif /* _ZCRYPT_MSGTYPE6_H_ */ |
166 | |