Merge tag 'block-pull-request' of https://gitlab.com/stefanha/qemu into staging
[qemu.git] / linux-headers / linux / psp-sev.h
1 /* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */
2 /*
3 * Userspace interface for AMD Secure Encrypted Virtualization (SEV)
4 * platform management commands.
5 *
6 * Copyright (C) 2016-2017 Advanced Micro Devices, Inc.
7 *
8 * Author: Brijesh Singh <brijesh.singh@amd.com>
9 *
10 * SEV API specification is available at: https://developer.amd.com/sev/
11 */
12
13 #ifndef __PSP_SEV_USER_H__
14 #define __PSP_SEV_USER_H__
15
16 #include <linux/types.h>
17
18 /**
19 * SEV platform commands
20 */
21 enum {
22 SEV_FACTORY_RESET = 0,
23 SEV_PLATFORM_STATUS,
24 SEV_PEK_GEN,
25 SEV_PEK_CSR,
26 SEV_PDH_GEN,
27 SEV_PDH_CERT_EXPORT,
28 SEV_PEK_CERT_IMPORT,
29 SEV_GET_ID, /* This command is deprecated, use SEV_GET_ID2 */
30 SEV_GET_ID2,
31
32 SEV_MAX,
33 };
34
35 /**
36 * SEV Firmware status code
37 */
38 typedef enum {
39 SEV_RET_SUCCESS = 0,
40 SEV_RET_INVALID_PLATFORM_STATE,
41 SEV_RET_INVALID_GUEST_STATE,
42 SEV_RET_INAVLID_CONFIG,
43 SEV_RET_INVALID_LEN,
44 SEV_RET_ALREADY_OWNED,
45 SEV_RET_INVALID_CERTIFICATE,
46 SEV_RET_POLICY_FAILURE,
47 SEV_RET_INACTIVE,
48 SEV_RET_INVALID_ADDRESS,
49 SEV_RET_BAD_SIGNATURE,
50 SEV_RET_BAD_MEASUREMENT,
51 SEV_RET_ASID_OWNED,
52 SEV_RET_INVALID_ASID,
53 SEV_RET_WBINVD_REQUIRED,
54 SEV_RET_DFFLUSH_REQUIRED,
55 SEV_RET_INVALID_GUEST,
56 SEV_RET_INVALID_COMMAND,
57 SEV_RET_ACTIVE,
58 SEV_RET_HWSEV_RET_PLATFORM,
59 SEV_RET_HWSEV_RET_UNSAFE,
60 SEV_RET_UNSUPPORTED,
61 SEV_RET_INVALID_PARAM,
62 SEV_RET_RESOURCE_LIMIT,
63 SEV_RET_SECURE_DATA_INVALID,
64 SEV_RET_MAX,
65 } sev_ret_code;
66
67 /**
68 * struct sev_user_data_status - PLATFORM_STATUS command parameters
69 *
70 * @major: major API version
71 * @minor: minor API version
72 * @state: platform state
73 * @flags: platform config flags
74 * @build: firmware build id for API version
75 * @guest_count: number of active guests
76 */
77 struct sev_user_data_status {
78 __u8 api_major; /* Out */
79 __u8 api_minor; /* Out */
80 __u8 state; /* Out */
81 __u32 flags; /* Out */
82 __u8 build; /* Out */
83 __u32 guest_count; /* Out */
84 } __attribute__((packed));
85
86 #define SEV_STATUS_FLAGS_CONFIG_ES 0x0100
87
88 /**
89 * struct sev_user_data_pek_csr - PEK_CSR command parameters
90 *
91 * @address: PEK certificate chain
92 * @length: length of certificate
93 */
94 struct sev_user_data_pek_csr {
95 __u64 address; /* In */
96 __u32 length; /* In/Out */
97 } __attribute__((packed));
98
99 /**
100 * struct sev_user_data_cert_import - PEK_CERT_IMPORT command parameters
101 *
102 * @pek_address: PEK certificate chain
103 * @pek_len: length of PEK certificate
104 * @oca_address: OCA certificate chain
105 * @oca_len: length of OCA certificate
106 */
107 struct sev_user_data_pek_cert_import {
108 __u64 pek_cert_address; /* In */
109 __u32 pek_cert_len; /* In */
110 __u64 oca_cert_address; /* In */
111 __u32 oca_cert_len; /* In */
112 } __attribute__((packed));
113
114 /**
115 * struct sev_user_data_pdh_cert_export - PDH_CERT_EXPORT command parameters
116 *
117 * @pdh_address: PDH certificate address
118 * @pdh_len: length of PDH certificate
119 * @cert_chain_address: PDH certificate chain
120 * @cert_chain_len: length of PDH certificate chain
121 */
122 struct sev_user_data_pdh_cert_export {
123 __u64 pdh_cert_address; /* In */
124 __u32 pdh_cert_len; /* In/Out */
125 __u64 cert_chain_address; /* In */
126 __u32 cert_chain_len; /* In/Out */
127 } __attribute__((packed));
128
129 /**
130 * struct sev_user_data_get_id - GET_ID command parameters (deprecated)
131 *
132 * @socket1: Buffer to pass unique ID of first socket
133 * @socket2: Buffer to pass unique ID of second socket
134 */
135 struct sev_user_data_get_id {
136 __u8 socket1[64]; /* Out */
137 __u8 socket2[64]; /* Out */
138 } __attribute__((packed));
139
140 /**
141 * struct sev_user_data_get_id2 - GET_ID command parameters
142 * @address: Buffer to store unique ID
143 * @length: length of the unique ID
144 */
145 struct sev_user_data_get_id2 {
146 __u64 address; /* In */
147 __u32 length; /* In/Out */
148 } __attribute__((packed));
149
150 /**
151 * struct sev_issue_cmd - SEV ioctl parameters
152 *
153 * @cmd: SEV commands to execute
154 * @opaque: pointer to the command structure
155 * @error: SEV FW return code on failure
156 */
157 struct sev_issue_cmd {
158 __u32 cmd; /* In */
159 __u64 data; /* In */
160 __u32 error; /* Out */
161 } __attribute__((packed));
162
163 #define SEV_IOC_TYPE 'S'
164 #define SEV_ISSUE_CMD _IOWR(SEV_IOC_TYPE, 0x0, struct sev_issue_cmd)
165
166 #endif /* __PSP_USER_SEV_H */