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1 | /* |
2 | * zcrypt 2.1.0 | |
3 | * | |
4 | * Copyright IBM Corp. 2001, 2012 | |
5 | * Author(s): Robert Burroughs | |
6 | * Eric Rossman (edrossma@us.ibm.com) | |
7 | * | |
8 | * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com) | |
9 | * Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com> | |
10 | * MSGTYPE restruct: Holger Dengler <hd@linux.vnet.ibm.com> | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU General Public License as published by | |
14 | * the Free Software Foundation; either version 2, or (at your option) | |
15 | * any later version. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, | |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License | |
23 | * along with this program; if not, write to the Free Software | |
24 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
25 | */ | |
26 | ||
27 | #ifndef _ZCRYPT_MSGTYPE6_H_ | |
28 | #define _ZCRYPT_MSGTYPE6_H_ | |
29 | ||
30 | #include <asm/zcrypt.h> | |
31 | ||
32 | #define MSGTYPE06_NAME "zcrypt_msgtype6" | |
33 | #define MSGTYPE06_VARIANT_DEFAULT 0 | |
34 | #define MSGTYPE06_VARIANT_NORNG 1 | |
35 | ||
36 | #define MSGTYPE06_MAX_MSG_SIZE (12*1024) | |
37 | ||
38 | /** | |
39 | * The type 6 message family is associated with PCICC or PCIXCC cards. | |
40 | * | |
41 | * It contains a message header followed by a CPRB, both of which | |
42 | * are described below. | |
43 | * | |
44 | * Note that all reserved fields must be zeroes. | |
45 | */ | |
46 | struct type6_hdr { | |
47 | unsigned char reserved1; /* 0x00 */ | |
48 | unsigned char type; /* 0x06 */ | |
49 | unsigned char reserved2[2]; /* 0x0000 */ | |
50 | unsigned char right[4]; /* 0x00000000 */ | |
51 | unsigned char reserved3[2]; /* 0x0000 */ | |
52 | unsigned char reserved4[2]; /* 0x0000 */ | |
53 | unsigned char apfs[4]; /* 0x00000000 */ | |
54 | unsigned int offset1; /* 0x00000058 (offset to CPRB) */ | |
55 | unsigned int offset2; /* 0x00000000 */ | |
56 | unsigned int offset3; /* 0x00000000 */ | |
57 | unsigned int offset4; /* 0x00000000 */ | |
58 | unsigned char agent_id[16]; /* PCICC: */ | |
59 | /* 0x0100 */ | |
60 | /* 0x4343412d4150504c202020 */ | |
61 | /* 0x010101 */ | |
62 | /* PCIXCC: */ | |
63 | /* 0x4341000000000000 */ | |
64 | /* 0x0000000000000000 */ | |
65 | unsigned char rqid[2]; /* rqid. internal to 603 */ | |
66 | unsigned char reserved5[2]; /* 0x0000 */ | |
67 | unsigned char function_code[2]; /* for PKD, 0x5044 (ascii 'PD') */ | |
68 | unsigned char reserved6[2]; /* 0x0000 */ | |
69 | unsigned int ToCardLen1; /* (request CPRB len + 3) & -4 */ | |
70 | unsigned int ToCardLen2; /* db len 0x00000000 for PKD */ | |
71 | unsigned int ToCardLen3; /* 0x00000000 */ | |
72 | unsigned int ToCardLen4; /* 0x00000000 */ | |
73 | unsigned int FromCardLen1; /* response buffer length */ | |
74 | unsigned int FromCardLen2; /* db len 0x00000000 for PKD */ | |
75 | unsigned int FromCardLen3; /* 0x00000000 */ | |
76 | unsigned int FromCardLen4; /* 0x00000000 */ | |
77 | } __packed; | |
78 | ||
79 | /** | |
80 | * The type 86 message family is associated with PCICC and PCIXCC cards. | |
81 | * | |
82 | * It contains a message header followed by a CPRB. The CPRB is | |
83 | * the same as the request CPRB, which is described above. | |
84 | * | |
85 | * If format is 1, an error condition exists and no data beyond | |
86 | * the 8-byte message header is of interest. | |
87 | * | |
88 | * The non-error message is shown below. | |
89 | * | |
90 | * Note that all reserved fields must be zeroes. | |
91 | */ | |
92 | struct type86_hdr { | |
93 | unsigned char reserved1; /* 0x00 */ | |
94 | unsigned char type; /* 0x86 */ | |
95 | unsigned char format; /* 0x01 (error) or 0x02 (ok) */ | |
96 | unsigned char reserved2; /* 0x00 */ | |
97 | unsigned char reply_code; /* reply code (see above) */ | |
98 | unsigned char reserved3[3]; /* 0x000000 */ | |
99 | } __packed; | |
100 | ||
101 | #define TYPE86_RSP_CODE 0x86 | |
102 | #define TYPE86_FMT2 0x02 | |
103 | ||
104 | struct type86_fmt2_ext { | |
105 | unsigned char reserved[4]; /* 0x00000000 */ | |
106 | unsigned char apfs[4]; /* final status */ | |
107 | unsigned int count1; /* length of CPRB + parameters */ | |
108 | unsigned int offset1; /* offset to CPRB */ | |
109 | unsigned int count2; /* 0x00000000 */ | |
110 | unsigned int offset2; /* db offset 0x00000000 for PKD */ | |
111 | unsigned int count3; /* 0x00000000 */ | |
112 | unsigned int offset3; /* 0x00000000 */ | |
113 | unsigned int count4; /* 0x00000000 */ | |
114 | unsigned int offset4; /* 0x00000000 */ | |
115 | } __packed; | |
116 | ||
117 | /** | |
118 | * Prepare a type6 CPRB message for random number generation | |
119 | * | |
120 | * @ap_dev: AP device pointer | |
121 | * @ap_msg: pointer to AP message | |
122 | */ | |
123 | static inline void rng_type6CPRB_msgX(struct ap_device *ap_dev, | |
124 | struct ap_message *ap_msg, | |
125 | unsigned random_number_length) | |
126 | { | |
127 | struct { | |
128 | struct type6_hdr hdr; | |
129 | struct CPRBX cprbx; | |
130 | char function_code[2]; | |
131 | short int rule_length; | |
132 | char rule[8]; | |
133 | short int verb_length; | |
134 | short int key_length; | |
135 | } __packed * msg = ap_msg->message; | |
136 | static struct type6_hdr static_type6_hdrX = { | |
137 | .type = 0x06, | |
138 | .offset1 = 0x00000058, | |
139 | .agent_id = {'C', 'A'}, | |
140 | .function_code = {'R', 'L'}, | |
141 | .ToCardLen1 = sizeof(*msg) - sizeof(msg->hdr), | |
142 | .FromCardLen1 = sizeof(*msg) - sizeof(msg->hdr), | |
143 | }; | |
144 | static struct CPRBX local_cprbx = { | |
145 | .cprb_len = 0x00dc, | |
146 | .cprb_ver_id = 0x02, | |
147 | .func_id = {0x54, 0x32}, | |
148 | .req_parml = sizeof(*msg) - sizeof(msg->hdr) - | |
149 | sizeof(msg->cprbx), | |
150 | .rpl_msgbl = sizeof(*msg) - sizeof(msg->hdr), | |
151 | }; | |
152 | ||
153 | msg->hdr = static_type6_hdrX; | |
154 | msg->hdr.FromCardLen2 = random_number_length, | |
155 | msg->cprbx = local_cprbx; | |
156 | msg->cprbx.rpl_datal = random_number_length, | |
157 | msg->cprbx.domain = AP_QID_QUEUE(ap_dev->qid); | |
158 | memcpy(msg->function_code, msg->hdr.function_code, 0x02); | |
159 | msg->rule_length = 0x0a; | |
160 | memcpy(msg->rule, "RANDOM ", 8); | |
161 | msg->verb_length = 0x02; | |
162 | msg->key_length = 0x02; | |
163 | ap_msg->length = sizeof(*msg); | |
164 | } | |
165 | ||
166 | int zcrypt_msgtype6_init(void); | |
167 | void zcrypt_msgtype6_exit(void); | |
168 | ||
169 | #endif /* _ZCRYPT_MSGTYPE6_H_ */ |