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linux-next/include/linux/psp-sev.h
Brijesh Singh ad27ce1555 KVM: SEV: Add KVM_SEV_SNP_LAUNCH_FINISH command 
Add a KVM_SEV_SNP_LAUNCH_FINISH command to finalize the cryptographic
launch digest which stores the measurement of the guest at launch time.
Also extend the existing SNP firmware data structures to support
disabling the use of Versioned Chip Endorsement Keys (VCEK) by guests as
part of this command.

While finalizing the launch flow, the code also issues the LAUNCH_UPDATE
SNP firmware commands to encrypt/measure the initial VMSA pages for each
configured vCPU, which requires setting the RMP entries for those pages
to private, so also add handling to clean up the RMP entries for these
pages whening freeing vCPUs during shutdown.

Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Co-developed-by: Michael Roth <michael.roth@amd.com>
Signed-off-by: Michael Roth <michael.roth@amd.com>
Signed-off-by: Harald Hoyer <harald@profian.com>
Signed-off-by: Ashish Kalra <ashish.kalra@amd.com>
Message-ID: <20240501085210.2213060-8-michael.roth@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-05-12 04:09:30 -04:00

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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* AMD Secure Encrypted Virtualization (SEV) driver interface
*
* Copyright (C) 2016-2017 Advanced Micro Devices, Inc.
*
* Author: Brijesh Singh <brijesh.singh@amd.com>
*
* SEV API spec is available at https://developer.amd.com/sev
*/
#ifndef __PSP_SEV_H__
#define __PSP_SEV_H__
#include <uapi/linux/psp-sev.h>
#define SEV_FW_BLOB_MAX_SIZE 0x4000 /* 16KB */
/**
* SEV platform state
*/
enum sev_state {
SEV_STATE_UNINIT = 0x0,
SEV_STATE_INIT = 0x1,
SEV_STATE_WORKING = 0x2,
SEV_STATE_MAX
};
/**
* SEV platform and guest management commands
*/
enum sev_cmd {
/* platform commands */
SEV_CMD_INIT = 0x001,
SEV_CMD_SHUTDOWN = 0x002,
SEV_CMD_FACTORY_RESET = 0x003,
SEV_CMD_PLATFORM_STATUS = 0x004,
SEV_CMD_PEK_GEN = 0x005,
SEV_CMD_PEK_CSR = 0x006,
SEV_CMD_PEK_CERT_IMPORT = 0x007,
SEV_CMD_PDH_CERT_EXPORT = 0x008,
SEV_CMD_PDH_GEN = 0x009,
SEV_CMD_DF_FLUSH = 0x00A,
SEV_CMD_DOWNLOAD_FIRMWARE = 0x00B,
SEV_CMD_GET_ID = 0x00C,
SEV_CMD_INIT_EX = 0x00D,
/* Guest commands */
SEV_CMD_DECOMMISSION = 0x020,
SEV_CMD_ACTIVATE = 0x021,
SEV_CMD_DEACTIVATE = 0x022,
SEV_CMD_GUEST_STATUS = 0x023,
/* Guest launch commands */
SEV_CMD_LAUNCH_START = 0x030,
SEV_CMD_LAUNCH_UPDATE_DATA = 0x031,
SEV_CMD_LAUNCH_UPDATE_VMSA = 0x032,
SEV_CMD_LAUNCH_MEASURE = 0x033,
SEV_CMD_LAUNCH_UPDATE_SECRET = 0x034,
SEV_CMD_LAUNCH_FINISH = 0x035,
SEV_CMD_ATTESTATION_REPORT = 0x036,
/* Guest migration commands (outgoing) */
SEV_CMD_SEND_START = 0x040,
SEV_CMD_SEND_UPDATE_DATA = 0x041,
SEV_CMD_SEND_UPDATE_VMSA = 0x042,
SEV_CMD_SEND_FINISH = 0x043,
SEV_CMD_SEND_CANCEL = 0x044,
/* Guest migration commands (incoming) */
SEV_CMD_RECEIVE_START = 0x050,
SEV_CMD_RECEIVE_UPDATE_DATA = 0x051,
SEV_CMD_RECEIVE_UPDATE_VMSA = 0x052,
SEV_CMD_RECEIVE_FINISH = 0x053,
/* Guest debug commands */
SEV_CMD_DBG_DECRYPT = 0x060,
SEV_CMD_DBG_ENCRYPT = 0x061,
/* SNP specific commands */
SEV_CMD_SNP_INIT = 0x081,
SEV_CMD_SNP_SHUTDOWN = 0x082,
SEV_CMD_SNP_PLATFORM_STATUS = 0x083,
SEV_CMD_SNP_DF_FLUSH = 0x084,
SEV_CMD_SNP_INIT_EX = 0x085,
SEV_CMD_SNP_SHUTDOWN_EX = 0x086,
SEV_CMD_SNP_DECOMMISSION = 0x090,
SEV_CMD_SNP_ACTIVATE = 0x091,
SEV_CMD_SNP_GUEST_STATUS = 0x092,
SEV_CMD_SNP_GCTX_CREATE = 0x093,
SEV_CMD_SNP_GUEST_REQUEST = 0x094,
SEV_CMD_SNP_ACTIVATE_EX = 0x095,
SEV_CMD_SNP_LAUNCH_START = 0x0A0,
SEV_CMD_SNP_LAUNCH_UPDATE = 0x0A1,
SEV_CMD_SNP_LAUNCH_FINISH = 0x0A2,
SEV_CMD_SNP_DBG_DECRYPT = 0x0B0,
SEV_CMD_SNP_DBG_ENCRYPT = 0x0B1,
SEV_CMD_SNP_PAGE_SWAP_OUT = 0x0C0,
SEV_CMD_SNP_PAGE_SWAP_IN = 0x0C1,
SEV_CMD_SNP_PAGE_MOVE = 0x0C2,
SEV_CMD_SNP_PAGE_MD_INIT = 0x0C3,
SEV_CMD_SNP_PAGE_SET_STATE = 0x0C6,
SEV_CMD_SNP_PAGE_RECLAIM = 0x0C7,
SEV_CMD_SNP_PAGE_UNSMASH = 0x0C8,
SEV_CMD_SNP_CONFIG = 0x0C9,
SEV_CMD_SNP_DOWNLOAD_FIRMWARE_EX = 0x0CA,
SEV_CMD_SNP_COMMIT = 0x0CB,
SEV_CMD_SNP_VLEK_LOAD = 0x0CD,
SEV_CMD_MAX,
};
/**
* struct sev_data_init - INIT command parameters
*
* @flags: processing flags
* @tmr_address: system physical address used for SEV-ES
* @tmr_len: len of tmr_address
*/
struct sev_data_init {
u32 flags; /* In */
u32 reserved; /* In */
u64 tmr_address; /* In */
u32 tmr_len; /* In */
} __packed;
/**
* struct sev_data_init_ex - INIT_EX command parameters
*
* @length: len of the command buffer read by the PSP
* @flags: processing flags
* @tmr_address: system physical address used for SEV-ES
* @tmr_len: len of tmr_address
* @nv_address: system physical address used for PSP NV storage
* @nv_len: len of nv_address
*/
struct sev_data_init_ex {
u32 length; /* In */
u32 flags; /* In */
u64 tmr_address; /* In */
u32 tmr_len; /* In */
u32 reserved; /* In */
u64 nv_address; /* In/Out */
u32 nv_len; /* In */
} __packed;
#define SEV_INIT_FLAGS_SEV_ES 0x01
/**
* struct sev_data_pek_csr - PEK_CSR command parameters
*
* @address: PEK certificate chain
* @len: len of certificate
*/
struct sev_data_pek_csr {
u64 address; /* In */
u32 len; /* In/Out */
} __packed;
/**
* struct sev_data_cert_import - PEK_CERT_IMPORT command parameters
*
* @pek_address: PEK certificate chain
* @pek_len: len of PEK certificate
* @oca_address: OCA certificate chain
* @oca_len: len of OCA certificate
*/
struct sev_data_pek_cert_import {
u64 pek_cert_address; /* In */
u32 pek_cert_len; /* In */
u32 reserved; /* In */
u64 oca_cert_address; /* In */
u32 oca_cert_len; /* In */
} __packed;
/**
* struct sev_data_download_firmware - DOWNLOAD_FIRMWARE command parameters
*
* @address: physical address of firmware image
* @len: len of the firmware image
*/
struct sev_data_download_firmware {
u64 address; /* In */
u32 len; /* In */
} __packed;
/**
* struct sev_data_get_id - GET_ID command parameters
*
* @address: physical address of region to place unique CPU ID(s)
* @len: len of the region
*/
struct sev_data_get_id {
u64 address; /* In */
u32 len; /* In/Out */
} __packed;
/**
* struct sev_data_pdh_cert_export - PDH_CERT_EXPORT command parameters
*
* @pdh_address: PDH certificate address
* @pdh_len: len of PDH certificate
* @cert_chain_address: PDH certificate chain
* @cert_chain_len: len of PDH certificate chain
*/
struct sev_data_pdh_cert_export {
u64 pdh_cert_address; /* In */
u32 pdh_cert_len; /* In/Out */
u32 reserved; /* In */
u64 cert_chain_address; /* In */
u32 cert_chain_len; /* In/Out */
} __packed;
/**
* struct sev_data_decommission - DECOMMISSION command parameters
*
* @handle: handle of the VM to decommission
*/
struct sev_data_decommission {
u32 handle; /* In */
} __packed;
/**
* struct sev_data_activate - ACTIVATE command parameters
*
* @handle: handle of the VM to activate
* @asid: asid assigned to the VM
*/
struct sev_data_activate {
u32 handle; /* In */
u32 asid; /* In */
} __packed;
/**
* struct sev_data_deactivate - DEACTIVATE command parameters
*
* @handle: handle of the VM to deactivate
*/
struct sev_data_deactivate {
u32 handle; /* In */
} __packed;
/**
* struct sev_data_guest_status - SEV GUEST_STATUS command parameters
*
* @handle: handle of the VM to retrieve status
* @policy: policy information for the VM
* @asid: current ASID of the VM
* @state: current state of the VM
*/
struct sev_data_guest_status {
u32 handle; /* In */
u32 policy; /* Out */
u32 asid; /* Out */
u8 state; /* Out */
} __packed;
/**
* struct sev_data_launch_start - LAUNCH_START command parameters
*
* @handle: handle assigned to the VM
* @policy: guest launch policy
* @dh_cert_address: physical address of DH certificate blob
* @dh_cert_len: len of DH certificate blob
* @session_address: physical address of session parameters
* @session_len: len of session parameters
*/
struct sev_data_launch_start {
u32 handle; /* In/Out */
u32 policy; /* In */
u64 dh_cert_address; /* In */
u32 dh_cert_len; /* In */
u32 reserved; /* In */
u64 session_address; /* In */
u32 session_len; /* In */
} __packed;
/**
* struct sev_data_launch_update_data - LAUNCH_UPDATE_DATA command parameter
*
* @handle: handle of the VM to update
* @len: len of memory to be encrypted
* @address: physical address of memory region to encrypt
*/
struct sev_data_launch_update_data {
u32 handle; /* In */
u32 reserved;
u64 address; /* In */
u32 len; /* In */
} __packed;
/**
* struct sev_data_launch_update_vmsa - LAUNCH_UPDATE_VMSA command
*
* @handle: handle of the VM
* @address: physical address of memory region to encrypt
* @len: len of memory region to encrypt
*/
struct sev_data_launch_update_vmsa {
u32 handle; /* In */
u32 reserved;
u64 address; /* In */
u32 len; /* In */
} __packed;
/**
* struct sev_data_launch_measure - LAUNCH_MEASURE command parameters
*
* @handle: handle of the VM to process
* @address: physical address containing the measurement blob
* @len: len of measurement blob
*/
struct sev_data_launch_measure {
u32 handle; /* In */
u32 reserved;
u64 address; /* In */
u32 len; /* In/Out */
} __packed;
/**
* struct sev_data_launch_secret - LAUNCH_SECRET command parameters
*
* @handle: handle of the VM to process
* @hdr_address: physical address containing the packet header
* @hdr_len: len of packet header
* @guest_address: system physical address of guest memory region
* @guest_len: len of guest_paddr
* @trans_address: physical address of transport memory buffer
* @trans_len: len of transport memory buffer
*/
struct sev_data_launch_secret {
u32 handle; /* In */
u32 reserved1;
u64 hdr_address; /* In */
u32 hdr_len; /* In */
u32 reserved2;
u64 guest_address; /* In */
u32 guest_len; /* In */
u32 reserved3;
u64 trans_address; /* In */
u32 trans_len; /* In */
} __packed;
/**
* struct sev_data_launch_finish - LAUNCH_FINISH command parameters
*
* @handle: handle of the VM to process
*/
struct sev_data_launch_finish {
u32 handle; /* In */
} __packed;
/**
* struct sev_data_send_start - SEND_START command parameters
*
* @handle: handle of the VM to process
* @policy: policy information for the VM
* @pdh_cert_address: physical address containing PDH certificate
* @pdh_cert_len: len of PDH certificate
* @plat_certs_address: physical address containing platform certificate
* @plat_certs_len: len of platform certificate
* @amd_certs_address: physical address containing AMD certificate
* @amd_certs_len: len of AMD certificate
* @session_address: physical address containing Session data
* @session_len: len of session data
*/
struct sev_data_send_start {
u32 handle; /* In */
u32 policy; /* Out */
u64 pdh_cert_address; /* In */
u32 pdh_cert_len; /* In */
u32 reserved1;
u64 plat_certs_address; /* In */
u32 plat_certs_len; /* In */
u32 reserved2;
u64 amd_certs_address; /* In */
u32 amd_certs_len; /* In */
u32 reserved3;
u64 session_address; /* In */
u32 session_len; /* In/Out */
} __packed;
/**
* struct sev_data_send_update - SEND_UPDATE_DATA command
*
* @handle: handle of the VM to process
* @hdr_address: physical address containing packet header
* @hdr_len: len of packet header
* @guest_address: physical address of guest memory region to send
* @guest_len: len of guest memory region to send
* @trans_address: physical address of host memory region
* @trans_len: len of host memory region
*/
struct sev_data_send_update_data {
u32 handle; /* In */
u32 reserved1;
u64 hdr_address; /* In */
u32 hdr_len; /* In/Out */
u32 reserved2;
u64 guest_address; /* In */
u32 guest_len; /* In */
u32 reserved3;
u64 trans_address; /* In */
u32 trans_len; /* In */
} __packed;
/**
* struct sev_data_send_update - SEND_UPDATE_VMSA command
*
* @handle: handle of the VM to process
* @hdr_address: physical address containing packet header
* @hdr_len: len of packet header
* @guest_address: physical address of guest memory region to send
* @guest_len: len of guest memory region to send
* @trans_address: physical address of host memory region
* @trans_len: len of host memory region
*/
struct sev_data_send_update_vmsa {
u32 handle; /* In */
u64 hdr_address; /* In */
u32 hdr_len; /* In/Out */
u32 reserved2;
u64 guest_address; /* In */
u32 guest_len; /* In */
u32 reserved3;
u64 trans_address; /* In */
u32 trans_len; /* In */
} __packed;
/**
* struct sev_data_send_finish - SEND_FINISH command parameters
*
* @handle: handle of the VM to process
*/
struct sev_data_send_finish {
u32 handle; /* In */
} __packed;
/**
* struct sev_data_send_cancel - SEND_CANCEL command parameters
*
* @handle: handle of the VM to process
*/
struct sev_data_send_cancel {
u32 handle; /* In */
} __packed;
/**
* struct sev_data_receive_start - RECEIVE_START command parameters
*
* @handle: handle of the VM to perform receive operation
* @pdh_cert_address: system physical address containing PDH certificate blob
* @pdh_cert_len: len of PDH certificate blob
* @session_address: system physical address containing session blob
* @session_len: len of session blob
*/
struct sev_data_receive_start {
u32 handle; /* In/Out */
u32 policy; /* In */
u64 pdh_cert_address; /* In */
u32 pdh_cert_len; /* In */
u32 reserved1;
u64 session_address; /* In */
u32 session_len; /* In */
} __packed;
/**
* struct sev_data_receive_update_data - RECEIVE_UPDATE_DATA command parameters
*
* @handle: handle of the VM to update
* @hdr_address: physical address containing packet header blob
* @hdr_len: len of packet header
* @guest_address: system physical address of guest memory region
* @guest_len: len of guest memory region
* @trans_address: system physical address of transport buffer
* @trans_len: len of transport buffer
*/
struct sev_data_receive_update_data {
u32 handle; /* In */
u32 reserved1;
u64 hdr_address; /* In */
u32 hdr_len; /* In */
u32 reserved2;
u64 guest_address; /* In */
u32 guest_len; /* In */
u32 reserved3;
u64 trans_address; /* In */
u32 trans_len; /* In */
} __packed;
/**
* struct sev_data_receive_update_vmsa - RECEIVE_UPDATE_VMSA command parameters
*
* @handle: handle of the VM to update
* @hdr_address: physical address containing packet header blob
* @hdr_len: len of packet header
* @guest_address: system physical address of guest memory region
* @guest_len: len of guest memory region
* @trans_address: system physical address of transport buffer
* @trans_len: len of transport buffer
*/
struct sev_data_receive_update_vmsa {
u32 handle; /* In */
u32 reserved1;
u64 hdr_address; /* In */
u32 hdr_len; /* In */
u32 reserved2;
u64 guest_address; /* In */
u32 guest_len; /* In */
u32 reserved3;
u64 trans_address; /* In */
u32 trans_len; /* In */
} __packed;
/**
* struct sev_data_receive_finish - RECEIVE_FINISH command parameters
*
* @handle: handle of the VM to finish
*/
struct sev_data_receive_finish {
u32 handle; /* In */
} __packed;
/**
* struct sev_data_dbg - DBG_ENCRYPT/DBG_DECRYPT command parameters
*
* @handle: handle of the VM to perform debug operation
* @src_addr: source address of data to operate on
* @dst_addr: destination address of data to operate on
* @len: len of data to operate on
*/
struct sev_data_dbg {
u32 handle; /* In */
u32 reserved;
u64 src_addr; /* In */
u64 dst_addr; /* In */
u32 len; /* In */
} __packed;
/**
* struct sev_data_attestation_report - SEV_ATTESTATION_REPORT command parameters
*
* @handle: handle of the VM
* @mnonce: a random nonce that will be included in the report.
* @address: physical address where the report will be copied.
* @len: length of the physical buffer.
*/
struct sev_data_attestation_report {
u32 handle; /* In */
u32 reserved;
u64 address; /* In */
u8 mnonce[16]; /* In */
u32 len; /* In/Out */
} __packed;
/**
* struct sev_data_snp_download_firmware - SNP_DOWNLOAD_FIRMWARE command params
*
* @address: physical address of firmware image
* @len: length of the firmware image
*/
struct sev_data_snp_download_firmware {
u64 address; /* In */
u32 len; /* In */
} __packed;
/**
* struct sev_data_snp_activate - SNP_ACTIVATE command params
*
* @gctx_paddr: system physical address guest context page
* @asid: ASID to bind to the guest
*/
struct sev_data_snp_activate {
u64 gctx_paddr; /* In */
u32 asid; /* In */
} __packed;
/**
* struct sev_data_snp_addr - generic SNP command params
*
* @address: physical address of generic data param
*/
struct sev_data_snp_addr {
u64 address; /* In/Out */
} __packed;
/**
* struct sev_data_snp_launch_start - SNP_LAUNCH_START command params
*
* @gctx_paddr: system physical address of guest context page
* @policy: guest policy
* @ma_gctx_paddr: system physical address of migration agent
* @ma_en: the guest is associated with a migration agent
* @imi_en: launch flow is launching an IMI (Incoming Migration Image) for the
* purpose of guest-assisted migration.
* @rsvd: reserved
* @gosvw: guest OS-visible workarounds, as defined by hypervisor
*/
struct sev_data_snp_launch_start {
u64 gctx_paddr; /* In */
u64 policy; /* In */
u64 ma_gctx_paddr; /* In */
u32 ma_en:1; /* In */
u32 imi_en:1; /* In */
u32 rsvd:30;
u8 gosvw[16]; /* In */
} __packed;
/* SNP support page type */
enum {
SNP_PAGE_TYPE_NORMAL = 0x1,
SNP_PAGE_TYPE_VMSA = 0x2,
SNP_PAGE_TYPE_ZERO = 0x3,
SNP_PAGE_TYPE_UNMEASURED = 0x4,
SNP_PAGE_TYPE_SECRET = 0x5,
SNP_PAGE_TYPE_CPUID = 0x6,
SNP_PAGE_TYPE_MAX
};
/**
* struct sev_data_snp_launch_update - SNP_LAUNCH_UPDATE command params
*
* @gctx_paddr: system physical address of guest context page
* @page_size: page size 0 indicates 4K and 1 indicates 2MB page
* @page_type: encoded page type
* @imi_page: indicates that this page is part of the IMI (Incoming Migration
* Image) of the guest
* @rsvd: reserved
* @rsvd2: reserved
* @address: system physical address of destination page to encrypt
* @rsvd3: reserved
* @vmpl1_perms: VMPL permission mask for VMPL1
* @vmpl2_perms: VMPL permission mask for VMPL2
* @vmpl3_perms: VMPL permission mask for VMPL3
* @rsvd4: reserved
*/
struct sev_data_snp_launch_update {
u64 gctx_paddr; /* In */
u32 page_size:1; /* In */
u32 page_type:3; /* In */
u32 imi_page:1; /* In */
u32 rsvd:27;
u32 rsvd2;
u64 address; /* In */
u32 rsvd3:8;
u32 vmpl1_perms:8; /* In */
u32 vmpl2_perms:8; /* In */
u32 vmpl3_perms:8; /* In */
u32 rsvd4;
} __packed;
/**
* struct sev_data_snp_launch_finish - SNP_LAUNCH_FINISH command params
*
* @gctx_paddr: system physical address of guest context page
* @id_block_paddr: system physical address of ID block
* @id_auth_paddr: system physical address of ID block authentication structure
* @id_block_en: indicates whether ID block is present
* @auth_key_en: indicates whether author key is present in authentication structure
* @vcek_disabled: indicates whether use of VCEK is allowed for attestation reports
* @rsvd: reserved
* @host_data: host-supplied data for guest, not interpreted by firmware
*/
struct sev_data_snp_launch_finish {
u64 gctx_paddr;
u64 id_block_paddr;
u64 id_auth_paddr;
u8 id_block_en:1;
u8 auth_key_en:1;
u8 vcek_disabled:1;
u64 rsvd:61;
u8 host_data[32];
} __packed;
/**
* struct sev_data_snp_guest_status - SNP_GUEST_STATUS command params
*
* @gctx_paddr: system physical address of guest context page
* @address: system physical address of guest status page
*/
struct sev_data_snp_guest_status {
u64 gctx_paddr;
u64 address;
} __packed;
/**
* struct sev_data_snp_page_reclaim - SNP_PAGE_RECLAIM command params
*
* @paddr: system physical address of page to be claimed. The 0th bit in the
* address indicates the page size. 0h indicates 4KB and 1h indicates
* 2MB page.
*/
struct sev_data_snp_page_reclaim {
u64 paddr;
} __packed;
/**
* struct sev_data_snp_page_unsmash - SNP_PAGE_UNSMASH command params
*
* @paddr: system physical address of page to be unsmashed. The 0th bit in the
* address indicates the page size. 0h indicates 4 KB and 1h indicates
* 2 MB page.
*/
struct sev_data_snp_page_unsmash {
u64 paddr;
} __packed;
/**
* struct sev_data_snp_dbg - DBG_ENCRYPT/DBG_DECRYPT command parameters
*
* @gctx_paddr: system physical address of guest context page
* @src_addr: source address of data to operate on
* @dst_addr: destination address of data to operate on
*/
struct sev_data_snp_dbg {
u64 gctx_paddr; /* In */
u64 src_addr; /* In */
u64 dst_addr; /* In */
} __packed;
/**
* struct sev_data_snp_guest_request - SNP_GUEST_REQUEST command params
*
* @gctx_paddr: system physical address of guest context page
* @req_paddr: system physical address of request page
* @res_paddr: system physical address of response page
*/
struct sev_data_snp_guest_request {
u64 gctx_paddr; /* In */
u64 req_paddr; /* In */
u64 res_paddr; /* In */
} __packed;
/**
* struct sev_data_snp_init_ex - SNP_INIT_EX structure
*
* @init_rmp: indicate that the RMP should be initialized.
* @list_paddr_en: indicate that list_paddr is valid
* @rsvd: reserved
* @rsvd1: reserved
* @list_paddr: system physical address of range list
* @rsvd2: reserved
*/
struct sev_data_snp_init_ex {
u32 init_rmp:1;
u32 list_paddr_en:1;
u32 rsvd:30;
u32 rsvd1;
u64 list_paddr;
u8 rsvd2[48];
} __packed;
/**
* struct sev_data_range - RANGE structure
*
* @base: system physical address of first byte of range
* @page_count: number of 4KB pages in this range
* @rsvd: reserved
*/
struct sev_data_range {
u64 base;
u32 page_count;
u32 rsvd;
} __packed;
/**
* struct sev_data_range_list - RANGE_LIST structure
*
* @num_elements: number of elements in RANGE_ARRAY
* @rsvd: reserved
* @ranges: array of num_elements of type RANGE
*/
struct sev_data_range_list {
u32 num_elements;
u32 rsvd;
struct sev_data_range ranges[];
} __packed;
/**
* struct sev_data_snp_shutdown_ex - SNP_SHUTDOWN_EX structure
*
* @len: length of the command buffer read by the PSP
* @iommu_snp_shutdown: Disable enforcement of SNP in the IOMMU
* @rsvd1: reserved
*/
struct sev_data_snp_shutdown_ex {
u32 len;
u32 iommu_snp_shutdown:1;
u32 rsvd1:31;
} __packed;
/**
* struct sev_platform_init_args
*
* @error: SEV firmware error code
* @probe: True if this is being called as part of CCP module probe, which
* will defer SEV_INIT/SEV_INIT_EX firmware initialization until needed
* unless psp_init_on_probe module param is set
*/
struct sev_platform_init_args {
int error;
bool probe;
};
/**
* struct sev_data_snp_commit - SNP_COMMIT structure
*
* @len: length of the command buffer read by the PSP
*/
struct sev_data_snp_commit {
u32 len;
} __packed;
#ifdef CONFIG_CRYPTO_DEV_SP_PSP
/**
* sev_platform_init - perform SEV INIT command
*
* @args: struct sev_platform_init_args to pass in arguments
*
* 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_platform_init(struct sev_platform_init_args *args);
/**
* sev_platform_status - perform SEV PLATFORM_STATUS command
*
* @status: sev_user_data_status structure to be processed
* @error: 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_platform_status(struct sev_user_data_status *status, int *error);
/**
* sev_issue_cmd_external_user - issue SEV command by other driver with a file
* handle.
*
* 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
* so that we know that it has access to SEV device.
*
* @filep - SEV device file pointer
* @cmd - command to issue
* @data - command buffer
* @error: 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
* -%EINVAL if the SEV file descriptor is not valid
*/
int sev_issue_cmd_external_user(struct file *filep, unsigned int id,
void *data, int *error);
/**
* sev_guest_deactivate - perform SEV DEACTIVATE command
*
* @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);
/**
* sev_do_cmd - issue an SEV or an SEV-SNP command
*
* @cmd: SEV or SEV-SNP firmware command to issue
* @data: arguments for firmware command
* @psp_ret: SEV command return code
*
* Returns:
* 0 if the SEV device successfully processed the command
* -%ENODEV if the PSP device is not available
* -%ENOTSUPP if PSP device does not support SEV
* -%ETIMEDOUT if the SEV command timed out
* -%EIO if PSP device returned a non-zero return code
*/
int sev_do_cmd(int cmd, void *data, int *psp_ret);
void *psp_copy_user_blob(u64 uaddr, u32 len);
void *snp_alloc_firmware_page(gfp_t mask);
void snp_free_firmware_page(void *addr);
#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(struct sev_platform_init_args *args) { 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_do_cmd(int cmd, void *data, int *psp_ret) { 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); }
static inline void *snp_alloc_firmware_page(gfp_t mask)
{
return NULL;
}
static inline void snp_free_firmware_page(void *addr) { }
#endif /* CONFIG_CRYPTO_DEV_SP_PSP */
#endif /* __PSP_SEV_H__ */
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