626 lines
17 KiB
C
626 lines
17 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* AMD Secure Encrypted Virtualization (SEV) driver interface
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*
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* Copyright (C) 2016-2017 Advanced Micro Devices, Inc.
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*
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* Author: Brijesh Singh <brijesh.singh@amd.com>
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*
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* SEV API spec is available at https://developer.amd.com/sev
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*/
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#ifndef __PSP_SEV_H__
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#define __PSP_SEV_H__
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#include <uapi/linux/psp-sev.h>
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#ifdef CONFIG_X86
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#include <linux/mem_encrypt.h>
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#define __psp_pa(x) __sme_pa(x)
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#else
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#define __psp_pa(x) __pa(x)
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#endif
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#define SEV_FW_BLOB_MAX_SIZE 0x4000 /* 16KB */
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/**
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* SEV platform state
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*/
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enum sev_state {
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SEV_STATE_UNINIT = 0x0,
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SEV_STATE_INIT = 0x1,
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SEV_STATE_WORKING = 0x2,
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SEV_STATE_MAX
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};
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/**
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* SEV platform and guest management commands
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*/
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enum sev_cmd {
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/* platform commands */
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SEV_CMD_INIT = 0x001,
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SEV_CMD_SHUTDOWN = 0x002,
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SEV_CMD_FACTORY_RESET = 0x003,
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SEV_CMD_PLATFORM_STATUS = 0x004,
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SEV_CMD_PEK_GEN = 0x005,
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SEV_CMD_PEK_CSR = 0x006,
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SEV_CMD_PEK_CERT_IMPORT = 0x007,
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SEV_CMD_PDH_CERT_EXPORT = 0x008,
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SEV_CMD_PDH_GEN = 0x009,
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SEV_CMD_DF_FLUSH = 0x00A,
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SEV_CMD_DOWNLOAD_FIRMWARE = 0x00B,
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SEV_CMD_GET_ID = 0x00C,
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/* Guest commands */
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SEV_CMD_DECOMMISSION = 0x020,
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SEV_CMD_ACTIVATE = 0x021,
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SEV_CMD_DEACTIVATE = 0x022,
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SEV_CMD_GUEST_STATUS = 0x023,
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/* Guest launch commands */
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SEV_CMD_LAUNCH_START = 0x030,
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SEV_CMD_LAUNCH_UPDATE_DATA = 0x031,
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SEV_CMD_LAUNCH_UPDATE_VMSA = 0x032,
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SEV_CMD_LAUNCH_MEASURE = 0x033,
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SEV_CMD_LAUNCH_UPDATE_SECRET = 0x034,
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SEV_CMD_LAUNCH_FINISH = 0x035,
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/* Guest migration commands (outgoing) */
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SEV_CMD_SEND_START = 0x040,
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SEV_CMD_SEND_UPDATE_DATA = 0x041,
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SEV_CMD_SEND_UPDATE_VMSA = 0x042,
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SEV_CMD_SEND_FINISH = 0x043,
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/* Guest migration commands (incoming) */
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SEV_CMD_RECEIVE_START = 0x050,
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SEV_CMD_RECEIVE_UPDATE_DATA = 0x051,
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SEV_CMD_RECEIVE_UPDATE_VMSA = 0x052,
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SEV_CMD_RECEIVE_FINISH = 0x053,
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/* Guest debug commands */
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SEV_CMD_DBG_DECRYPT = 0x060,
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SEV_CMD_DBG_ENCRYPT = 0x061,
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SEV_CMD_MAX,
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};
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/**
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* struct sev_data_init - INIT command parameters
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*
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* @flags: processing flags
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* @tmr_address: system physical address used for SEV-ES
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* @tmr_len: len of tmr_address
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*/
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struct sev_data_init {
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u32 flags; /* In */
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u32 reserved; /* In */
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u64 tmr_address; /* In */
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u32 tmr_len; /* In */
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} __packed;
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/**
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* struct sev_data_pek_csr - PEK_CSR command parameters
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*
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* @address: PEK certificate chain
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* @len: len of certificate
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*/
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struct sev_data_pek_csr {
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u64 address; /* In */
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u32 len; /* In/Out */
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} __packed;
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/**
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* struct sev_data_cert_import - PEK_CERT_IMPORT command parameters
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*
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* @pek_address: PEK certificate chain
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* @pek_len: len of PEK certificate
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* @oca_address: OCA certificate chain
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* @oca_len: len of OCA certificate
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*/
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struct sev_data_pek_cert_import {
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u64 pek_cert_address; /* In */
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u32 pek_cert_len; /* In */
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u32 reserved; /* In */
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u64 oca_cert_address; /* In */
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u32 oca_cert_len; /* In */
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} __packed;
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/**
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* struct sev_data_download_firmware - DOWNLOAD_FIRMWARE command parameters
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*
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* @address: physical address of firmware image
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* @len: len of the firmware image
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*/
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struct sev_data_download_firmware {
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u64 address; /* In */
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u32 len; /* In */
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} __packed;
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/**
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* struct sev_data_get_id - GET_ID command parameters
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*
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* @address: physical address of region to place unique CPU ID(s)
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* @len: len of the region
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*/
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struct sev_data_get_id {
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u64 address; /* In */
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u32 len; /* In/Out */
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} __packed;
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/**
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* struct sev_data_pdh_cert_export - PDH_CERT_EXPORT command parameters
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*
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* @pdh_address: PDH certificate address
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* @pdh_len: len of PDH certificate
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* @cert_chain_address: PDH certificate chain
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* @cert_chain_len: len of PDH certificate chain
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*/
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struct sev_data_pdh_cert_export {
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u64 pdh_cert_address; /* In */
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u32 pdh_cert_len; /* In/Out */
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u32 reserved; /* In */
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u64 cert_chain_address; /* In */
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u32 cert_chain_len; /* In/Out */
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} __packed;
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/**
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* struct sev_data_decommission - DECOMMISSION command parameters
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*
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* @handle: handle of the VM to decommission
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*/
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struct sev_data_decommission {
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u32 handle; /* In */
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} __packed;
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/**
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* struct sev_data_activate - ACTIVATE command parameters
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*
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* @handle: handle of the VM to activate
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* @asid: asid assigned to the VM
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*/
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struct sev_data_activate {
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u32 handle; /* In */
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u32 asid; /* In */
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} __packed;
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/**
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* struct sev_data_deactivate - DEACTIVATE command parameters
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*
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* @handle: handle of the VM to deactivate
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*/
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struct sev_data_deactivate {
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u32 handle; /* In */
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} __packed;
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/**
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* struct sev_data_guest_status - SEV GUEST_STATUS command parameters
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*
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* @handle: handle of the VM to retrieve status
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* @policy: policy information for the VM
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* @asid: current ASID of the VM
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* @state: current state of the VM
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*/
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struct sev_data_guest_status {
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u32 handle; /* In */
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u32 policy; /* Out */
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u32 asid; /* Out */
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u8 state; /* Out */
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} __packed;
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/**
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* struct sev_data_launch_start - LAUNCH_START command parameters
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*
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* @handle: handle assigned to the VM
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* @policy: guest launch policy
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* @dh_cert_address: physical address of DH certificate blob
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* @dh_cert_len: len of DH certificate blob
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* @session_address: physical address of session parameters
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* @session_len: len of session parameters
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*/
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struct sev_data_launch_start {
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u32 handle; /* In/Out */
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u32 policy; /* In */
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u64 dh_cert_address; /* In */
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u32 dh_cert_len; /* In */
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u32 reserved; /* In */
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u64 session_address; /* In */
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u32 session_len; /* In */
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} __packed;
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/**
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* struct sev_data_launch_update_data - LAUNCH_UPDATE_DATA command parameter
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*
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* @handle: handle of the VM to update
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* @len: len of memory to be encrypted
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* @address: physical address of memory region to encrypt
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*/
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struct sev_data_launch_update_data {
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u32 handle; /* In */
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u32 reserved;
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u64 address; /* In */
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u32 len; /* In */
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} __packed;
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/**
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* struct sev_data_launch_update_vmsa - LAUNCH_UPDATE_VMSA command
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*
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* @handle: handle of the VM
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* @address: physical address of memory region to encrypt
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* @len: len of memory region to encrypt
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*/
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struct sev_data_launch_update_vmsa {
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u32 handle; /* In */
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u32 reserved;
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u64 address; /* In */
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u32 len; /* In */
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} __packed;
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/**
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* struct sev_data_launch_measure - LAUNCH_MEASURE command parameters
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*
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* @handle: handle of the VM to process
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* @address: physical address containing the measurement blob
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* @len: len of measurement blob
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*/
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struct sev_data_launch_measure {
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u32 handle; /* In */
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u32 reserved;
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u64 address; /* In */
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u32 len; /* In/Out */
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} __packed;
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/**
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* struct sev_data_launch_secret - LAUNCH_SECRET command parameters
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*
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* @handle: handle of the VM to process
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* @hdr_address: physical address containing the packet header
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* @hdr_len: len of packet header
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* @guest_address: system physical address of guest memory region
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* @guest_len: len of guest_paddr
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* @trans_address: physical address of transport memory buffer
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* @trans_len: len of transport memory buffer
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*/
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struct sev_data_launch_secret {
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u32 handle; /* In */
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u32 reserved1;
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u64 hdr_address; /* In */
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u32 hdr_len; /* In */
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u32 reserved2;
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u64 guest_address; /* In */
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u32 guest_len; /* In */
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u32 reserved3;
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u64 trans_address; /* In */
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u32 trans_len; /* In */
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} __packed;
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/**
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* struct sev_data_launch_finish - LAUNCH_FINISH command parameters
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*
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* @handle: handle of the VM to process
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*/
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struct sev_data_launch_finish {
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u32 handle; /* In */
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} __packed;
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/**
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* struct sev_data_send_start - SEND_START command parameters
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*
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* @handle: handle of the VM to process
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* @policy: policy information for the VM
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* @pdh_cert_address: physical address containing PDH certificate
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* @pdh_cert_len: len of PDH certificate
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* @plat_certs_address: physical address containing platform certificate
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* @plat_certs_len: len of platform certificate
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* @amd_certs_address: physical address containing AMD certificate
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* @amd_certs_len: len of AMD certificate
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* @session_address: physical address containing Session data
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* @session_len: len of session data
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*/
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struct sev_data_send_start {
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u32 handle; /* In */
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u32 policy; /* Out */
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u64 pdh_cert_address; /* In */
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u32 pdh_cert_len; /* In */
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u32 reserved1;
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u64 plat_cert_address; /* In */
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u32 plat_cert_len; /* In */
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u32 reserved2;
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u64 amd_cert_address; /* In */
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u32 amd_cert_len; /* In */
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u32 reserved3;
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u64 session_address; /* In */
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u32 session_len; /* In/Out */
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} __packed;
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/**
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* struct sev_data_send_update - SEND_UPDATE_DATA command
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*
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* @handle: handle of the VM to process
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* @hdr_address: physical address containing packet header
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* @hdr_len: len of packet header
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* @guest_address: physical address of guest memory region to send
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* @guest_len: len of guest memory region to send
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* @trans_address: physical address of host memory region
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* @trans_len: len of host memory region
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*/
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struct sev_data_send_update_data {
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u32 handle; /* In */
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u32 reserved1;
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u64 hdr_address; /* In */
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u32 hdr_len; /* In/Out */
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u32 reserved2;
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u64 guest_address; /* In */
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u32 guest_len; /* In */
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u32 reserved3;
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u64 trans_address; /* In */
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u32 trans_len; /* In */
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} __packed;
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/**
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* struct sev_data_send_update - SEND_UPDATE_VMSA command
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*
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* @handle: handle of the VM to process
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* @hdr_address: physical address containing packet header
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* @hdr_len: len of packet header
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* @guest_address: physical address of guest memory region to send
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* @guest_len: len of guest memory region to send
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* @trans_address: physical address of host memory region
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* @trans_len: len of host memory region
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*/
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struct sev_data_send_update_vmsa {
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u32 handle; /* In */
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u64 hdr_address; /* In */
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u32 hdr_len; /* In/Out */
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u32 reserved2;
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u64 guest_address; /* In */
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u32 guest_len; /* In */
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u32 reserved3;
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u64 trans_address; /* In */
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u32 trans_len; /* In */
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} __packed;
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/**
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* struct sev_data_send_finish - SEND_FINISH command parameters
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*
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* @handle: handle of the VM to process
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*/
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struct sev_data_send_finish {
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u32 handle; /* In */
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} __packed;
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/**
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* struct sev_data_receive_start - RECEIVE_START command parameters
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*
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* @handle: handle of the VM to perform receive operation
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* @pdh_cert_address: system physical address containing PDH certificate blob
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* @pdh_cert_len: len of PDH certificate blob
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* @session_address: system physical address containing session blob
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* @session_len: len of session blob
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*/
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struct sev_data_receive_start {
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u32 handle; /* In/Out */
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u32 policy; /* In */
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u64 pdh_cert_address; /* In */
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u32 pdh_cert_len; /* In */
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u32 reserved1;
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u64 session_address; /* In */
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u32 session_len; /* In */
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} __packed;
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/**
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* struct sev_data_receive_update_data - RECEIVE_UPDATE_DATA command parameters
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*
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* @handle: handle of the VM to update
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* @hdr_address: physical address containing packet header blob
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* @hdr_len: len of packet header
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* @guest_address: system physical address of guest memory region
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* @guest_len: len of guest memory region
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* @trans_address: system physical address of transport buffer
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* @trans_len: len of transport buffer
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*/
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struct sev_data_receive_update_data {
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u32 handle; /* In */
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u32 reserved1;
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u64 hdr_address; /* In */
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u32 hdr_len; /* In */
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u32 reserved2;
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u64 guest_address; /* In */
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u32 guest_len; /* In */
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u32 reserved3;
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u64 trans_address; /* In */
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u32 trans_len; /* In */
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} __packed;
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/**
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* struct sev_data_receive_update_vmsa - RECEIVE_UPDATE_VMSA command parameters
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*
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* @handle: handle of the VM to update
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* @hdr_address: physical address containing packet header blob
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* @hdr_len: len of packet header
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* @guest_address: system physical address of guest memory region
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* @guest_len: len of guest memory region
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* @trans_address: system physical address of transport buffer
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* @trans_len: len of transport buffer
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*/
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struct sev_data_receive_update_vmsa {
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u32 handle; /* In */
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u32 reserved1;
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u64 hdr_address; /* In */
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u32 hdr_len; /* In */
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u32 reserved2;
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u64 guest_address; /* In */
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u32 guest_len; /* In */
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u32 reserved3;
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u64 trans_address; /* In */
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u32 trans_len; /* In */
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} __packed;
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/**
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* struct sev_data_receive_finish - RECEIVE_FINISH command parameters
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*
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* @handle: handle of the VM to finish
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*/
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struct sev_data_receive_finish {
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u32 handle; /* In */
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} __packed;
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/**
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* struct sev_data_dbg - DBG_ENCRYPT/DBG_DECRYPT command parameters
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*
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* @handle: handle of the VM to perform debug operation
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* @src_addr: source address of data to operate on
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* @dst_addr: destination address of data to operate on
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* @len: len of data to operate on
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*/
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struct sev_data_dbg {
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u32 handle; /* In */
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u32 reserved;
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u64 src_addr; /* In */
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u64 dst_addr; /* In */
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u32 len; /* In */
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} __packed;
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#ifdef CONFIG_CRYPTO_DEV_SP_PSP
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/**
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* sev_platform_init - perform SEV INIT command
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*
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* @error: SEV command return code
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*
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* Returns:
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* 0 if the SEV successfully processed the command
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* -%ENODEV if the SEV device is not available
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* -%ENOTSUPP if the SEV does not support SEV
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* -%ETIMEDOUT if the SEV command timed out
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* -%EIO if the SEV returned a non-zero return code
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*/
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int sev_platform_init(int *error);
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/**
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* sev_platform_status - perform SEV PLATFORM_STATUS command
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*
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* @status: sev_user_data_status structure to be processed
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* @error: SEV command return code
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*
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* Returns:
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* 0 if the SEV successfully processed the command
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* -%ENODEV if the SEV device is not available
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* -%ENOTSUPP if the SEV does not support SEV
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* -%ETIMEDOUT if the SEV command timed out
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* -%EIO if the SEV returned a non-zero return code
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*/
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int sev_platform_status(struct sev_user_data_status *status, int *error);
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/**
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* sev_issue_cmd_external_user - issue SEV command by other driver with a file
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* handle.
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|
*
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|
* This function can be used by other drivers to issue a SEV command on
|
|
* behalf of userspace. The caller must pass a valid SEV file descriptor
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|
* so that we know that it has access to SEV device.
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*
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* @filep - SEV device file pointer
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* @cmd - command to issue
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* @data - command buffer
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* @error: SEV command return code
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|
*
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|
* Returns:
|
|
* 0 if the SEV successfully processed the command
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|
* -%ENODEV if the SEV device is not available
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|
* -%ENOTSUPP if the SEV does not support SEV
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|
* -%ETIMEDOUT if the SEV command timed out
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|
* -%EIO if the SEV returned a non-zero return code
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|
* -%EINVAL if the SEV file descriptor is not valid
|
|
*/
|
|
int sev_issue_cmd_external_user(struct file *filep, unsigned int id,
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|
void *data, int *error);
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|
|
|
/**
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|
* sev_guest_deactivate - perform SEV DEACTIVATE command
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|
*
|
|
* @deactivate: sev_data_deactivate structure to be processed
|
|
* @sev_ret: sev command return code
|
|
*
|
|
* Returns:
|
|
* 0 if the sev successfully processed the command
|
|
* -%ENODEV if the sev device is not available
|
|
* -%ENOTSUPP if the sev does not support SEV
|
|
* -%ETIMEDOUT if the sev command timed out
|
|
* -%EIO if the sev returned a non-zero return code
|
|
*/
|
|
int sev_guest_deactivate(struct sev_data_deactivate *data, int *error);
|
|
|
|
/**
|
|
* sev_guest_activate - perform SEV ACTIVATE command
|
|
*
|
|
* @activate: sev_data_activate structure to be processed
|
|
* @sev_ret: sev command return code
|
|
*
|
|
* Returns:
|
|
* 0 if the sev successfully processed the command
|
|
* -%ENODEV if the sev device is not available
|
|
* -%ENOTSUPP if the sev does not support SEV
|
|
* -%ETIMEDOUT if the sev command timed out
|
|
* -%EIO if the sev returned a non-zero return code
|
|
*/
|
|
int sev_guest_activate(struct sev_data_activate *data, int *error);
|
|
|
|
/**
|
|
* sev_guest_df_flush - perform SEV DF_FLUSH command
|
|
*
|
|
* @sev_ret: sev command return code
|
|
*
|
|
* Returns:
|
|
* 0 if the sev successfully processed the command
|
|
* -%ENODEV if the sev device is not available
|
|
* -%ENOTSUPP if the sev does not support SEV
|
|
* -%ETIMEDOUT if the sev command timed out
|
|
* -%EIO if the sev returned a non-zero return code
|
|
*/
|
|
int sev_guest_df_flush(int *error);
|
|
|
|
/**
|
|
* sev_guest_decommission - perform SEV DECOMMISSION command
|
|
*
|
|
* @decommission: sev_data_decommission structure to be processed
|
|
* @sev_ret: sev command return code
|
|
*
|
|
* Returns:
|
|
* 0 if the sev successfully processed the command
|
|
* -%ENODEV if the sev device is not available
|
|
* -%ENOTSUPP if the sev does not support SEV
|
|
* -%ETIMEDOUT if the sev command timed out
|
|
* -%EIO if the sev returned a non-zero return code
|
|
*/
|
|
int sev_guest_decommission(struct sev_data_decommission *data, int *error);
|
|
|
|
void *psp_copy_user_blob(u64 __user uaddr, u32 len);
|
|
|
|
#else /* !CONFIG_CRYPTO_DEV_SP_PSP */
|
|
|
|
static inline int
|
|
sev_platform_status(struct sev_user_data_status *status, int *error) { return -ENODEV; }
|
|
|
|
static inline int sev_platform_init(int *error) { return -ENODEV; }
|
|
|
|
static inline int
|
|
sev_guest_deactivate(struct sev_data_deactivate *data, int *error) { return -ENODEV; }
|
|
|
|
static inline int
|
|
sev_guest_decommission(struct sev_data_decommission *data, int *error) { return -ENODEV; }
|
|
|
|
static inline int
|
|
sev_guest_activate(struct sev_data_activate *data, int *error) { return -ENODEV; }
|
|
|
|
static inline int sev_guest_df_flush(int *error) { return -ENODEV; }
|
|
|
|
static inline int
|
|
sev_issue_cmd_external_user(struct file *filep, unsigned int id, void *data, int *error) { return -ENODEV; }
|
|
|
|
static inline void *psp_copy_user_blob(u64 __user uaddr, u32 len) { return ERR_PTR(-EINVAL); }
|
|
|
|
#endif /* CONFIG_CRYPTO_DEV_SP_PSP */
|
|
|
|
#endif /* __PSP_SEV_H__ */
|