LXR qemu/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 */
  21enum {
  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 */
  38typedef 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_MAX,
  62} sev_ret_code;
  63
  64/**
  65 * struct sev_user_data_status - PLATFORM_STATUS command parameters
  66 *
  67 * @major: major API version
  68 * @minor: minor API version
  69 * @state: platform state
  70 * @flags: platform config flags
  71 * @build: firmware build id for API version
  72 * @guest_count: number of active guests
  73 */
  74struct sev_user_data_status {
  75        __u8 api_major;                         /* Out */
  76        __u8 api_minor;                         /* Out */
  77        __u8 state;                             /* Out */
  78        __u32 flags;                            /* Out */
  79        __u8 build;                             /* Out */
  80        __u32 guest_count;                      /* Out */
  81} __attribute__((packed));
  82
  83/**
  84 * struct sev_user_data_pek_csr - PEK_CSR command parameters
  85 *
  86 * @address: PEK certificate chain
  87 * @length: length of certificate
  88 */
  89struct sev_user_data_pek_csr {
  90        __u64 address;                          /* In */
  91        __u32 length;                           /* In/Out */
  92} __attribute__((packed));
  93
  94/**
  95 * struct sev_user_data_cert_import - PEK_CERT_IMPORT command parameters
  96 *
  97 * @pek_address: PEK certificate chain
  98 * @pek_len: length of PEK certificate
  99 * @oca_address: OCA certificate chain
 100 * @oca_len: length of OCA certificate
 101 */
 102struct sev_user_data_pek_cert_import {
 103        __u64 pek_cert_address;                 /* In */
 104        __u32 pek_cert_len;                     /* In */
 105        __u64 oca_cert_address;                 /* In */
 106        __u32 oca_cert_len;                     /* In */
 107} __attribute__((packed));
 108
 109/**
 110 * struct sev_user_data_pdh_cert_export - PDH_CERT_EXPORT command parameters
 111 *
 112 * @pdh_address: PDH certificate address
 113 * @pdh_len: length of PDH certificate
 114 * @cert_chain_address: PDH certificate chain
 115 * @cert_chain_len: length of PDH certificate chain
 116 */
 117struct sev_user_data_pdh_cert_export {
 118        __u64 pdh_cert_address;                 /* In */
 119        __u32 pdh_cert_len;                     /* In/Out */
 120        __u64 cert_chain_address;               /* In */
 121        __u32 cert_chain_len;                   /* In/Out */
 122} __attribute__((packed));
 123
 124/**
 125 * struct sev_user_data_get_id - GET_ID command parameters (deprecated)
 126 *
 127 * @socket1: Buffer to pass unique ID of first socket
 128 * @socket2: Buffer to pass unique ID of second socket
 129 */
 130struct sev_user_data_get_id {
 131        __u8 socket1[64];                       /* Out */
 132        __u8 socket2[64];                       /* Out */
 133} __attribute__((packed));
 134
 135/**
 136 * struct sev_user_data_get_id2 - GET_ID command parameters
 137 * @address: Buffer to store unique ID
 138 * @length: length of the unique ID
 139 */
 140struct sev_user_data_get_id2 {
 141        __u64 address;                          /* In */
 142        __u32 length;                           /* In/Out */
 143} __attribute__((packed));
 144
 145/**
 146 * struct sev_issue_cmd - SEV ioctl parameters
 147 *
 148 * @cmd: SEV commands to execute
 149 * @opaque: pointer to the command structure
 150 * @error: SEV FW return code on failure
 151 */
 152struct sev_issue_cmd {
 153        __u32 cmd;                              /* In */
 154        __u64 data;                             /* In */
 155        __u32 error;                            /* Out */
 156} __attribute__((packed));
 157
 158#define SEV_IOC_TYPE            'S'
 159#define SEV_ISSUE_CMD   _IOWR(SEV_IOC_TYPE, 0x0, struct sev_issue_cmd)
 160
 161#endif /* __PSP_USER_SEV_H */
 162