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1 /*
2 * S/390 DIAGNOSE 320 definitions and structures
3 *
4 * Copyright 2025 IBM Corp.
5 * Author(s): Zhuoying Cai <zycai@linux.ibm.com>
6 *
7 * SPDX-License-Identifier: GPL-2.0-or-later
8 */
9
10 #ifndef S390X_DIAG320_H
11 #define S390X_DIAG320_H
12
13 #define DIAG_320_SUBC_QUERY_ISM 0
14 #define DIAG_320_SUBC_QUERY_VCSI 1
15 #define DIAG_320_SUBC_STORE_VC 2
16
17 #define DIAG_320_RC_OK 0x0001
18 #define DIAG_320_RC_NOT_SUPPORTED 0x0102
19 #define DIAG_320_RC_INVAL_VCSSB_LEN 0x0202
20 #define DIAG_320_RC_INVAL_VCB_LEN 0x0204
21 #define DIAG_320_RC_BAD_RANGE 0x0302
22
23 #define DIAG_320_ISM_QUERY_SUBCODES 0x80000000
24 #define DIAG_320_ISM_QUERY_VCSI 0x40000000
25 #define DIAG_320_ISM_STORE_VC 0x20000000
26
27 #define VCSSB_NO_VC 4
28 #define VCSSB_LEN_VALID 128
29
30 #define CERT_NAME_MAX_LEN 64
31
32 /*
33 * If the VCE flags indicate an invalid certificate,
34 * the VCE length is set to 72, containing only the
35 * first five fields of VCEntry.
36 */
37 #define VCE_INVALID_LEN 72
38
39 #define DIAG_320_VCE_FLAGS_VALID 0x80
40
41 typedef enum Diag320VceKeyType {
42 DIAG_320_VCE_KEYTYPE_SELF_DESCRIBING = 0,
43 DIAG_320_VCE_KEYTYPE_ECDSA_P521 = 1,
44 } Diag320VceKeyType;
45
46 typedef enum Diag320VceFormat {
47 DIAG_320_VCE_FORMAT_X509_DER = 1,
48 } Diag320VceFormat;
49
50 typedef enum Diag320VceHashType {
51 DIAG_320_VCE_HASHTYPE_SHA2_256 = 1,
52 } Diag320VceHashType;
53
54 struct VCStorageSizeBlock {
55 uint32_t length;
56 uint8_t reserved0[3];
57 uint8_t version;
58 uint32_t reserved1[6];
59 uint16_t total_vc_ct;
60 uint16_t max_vc_ct;
61 uint32_t reserved3[11];
62 uint32_t max_single_vcb_len;
63 uint32_t total_vcb_len;
64 uint32_t reserved4[10];
65 };
66 typedef struct VCStorageSizeBlock VCStorageSizeBlock;
67
68 struct VCEntryHeader {
69 uint32_t len;
70 uint8_t flags;
71 uint8_t key_type;
72 uint16_t cert_idx;
73 uint8_t name[CERT_NAME_MAX_LEN];
74 uint8_t format;
75 uint8_t reserved0;
76 uint16_t keyid_len;
77 uint8_t reserved1;
78 uint8_t hash_type;
79 uint16_t hash_len;
80 uint32_t reserved2;
81 uint32_t cert_len;
82 uint32_t reserved3[2];
83 uint16_t hash_offset;
84 uint16_t cert_offset;
85 uint32_t reserved4[7];
86 };
87 typedef struct VCEntryHeader VCEntryHeader;
88
89 struct VCEntry {
90 VCEntryHeader vce_hdr;
91 uint8_t cert_buf[];
92 };
93 typedef struct VCEntry VCEntry;
94
95 #define MAX_VCENTRY_SIZE (8 * 1024)
96 #define CERT_BUF_MAX_LEN (MAX_VCENTRY_SIZE - sizeof(VCEntryHeader))
97
98 struct VCBlockHeader {
99 uint32_t in_len;
100 uint32_t reserved0;
101 uint16_t first_vc_index;
102 uint16_t last_vc_index;
103 uint32_t reserved1[5];
104 uint32_t out_len;
105 uint8_t reserved2[4];
106 uint16_t stored_ct;
107 uint16_t remain_ct;
108 uint32_t reserved3[5];
109 };
110 typedef struct VCBlockHeader VCBlockHeader;
111
112 struct VCBlock {
113 VCBlockHeader vcb_hdr;
114 uint8_t vce_buf[];
115 };
116 typedef struct VCBlock VCBlock;
117
118 #endif