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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100/* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note *//* * Userspace interface for AMD SEV and SNP guest driver. * * Copyright (C) 2021 Advanced Micro Devices, Inc. * * Author: Brijesh Singh <brijesh.singh@amd.com> * * SEV API specification is available at: https://developer.amd.com/sev/ */
#ifndef __UAPI_LINUX_SEV_GUEST_H_#define __UAPI_LINUX_SEV_GUEST_H_
#include <linux/types.h>
#define SNP_REPORT_USER_DATA_SIZE 64
struct snp_report_req { /* user data that should be included in the report */ __u8 user_data[SNP_REPORT_USER_DATA_SIZE];
/* The vmpl level to be included in the report */ __u32 vmpl;
/* Must be zero filled */ __u8 rsvd[28];};
struct snp_report_resp { /* response data, see SEV-SNP spec for the format */ __u8 data[4000];};
struct snp_derived_key_req { __u32 root_key_select; __u32 rsvd; __u64 guest_field_select; __u32 vmpl; __u32 guest_svn; __u64 tcb_version;};
struct snp_derived_key_resp { /* response data, see SEV-SNP spec for the format */ __u8 data[64];};
struct snp_guest_request_ioctl { /* message version number (must be non-zero) */ __u8 msg_version;
/* Request and response structure address */ __u64 req_data; __u64 resp_data;
/* bits[63:32]: VMM error code, bits[31:0] firmware error code (see psp-sev.h) */ union { __u64 exitinfo2; struct { __u32 fw_error; __u32 vmm_error; }; };};
struct snp_ext_report_req { struct snp_report_req data;
/* where to copy the certificate blob */ __u64 certs_address;
/* length of the certificate blob */ __u32 certs_len;};
#define SNP_GUEST_REQ_IOC_TYPE 'S'
/* Get SNP attestation report */#define SNP_GET_REPORT _IOWR(SNP_GUEST_REQ_IOC_TYPE, 0x0, struct snp_guest_request_ioctl)
/* Get a derived key from the root */#define SNP_GET_DERIVED_KEY _IOWR(SNP_GUEST_REQ_IOC_TYPE, 0x1, struct snp_guest_request_ioctl)
/* Get SNP extended report as defined in the GHCB specification version 2. */#define SNP_GET_EXT_REPORT _IOWR(SNP_GUEST_REQ_IOC_TYPE, 0x2, struct snp_guest_request_ioctl)
/* Guest message request EXIT_INFO_2 constants */#define SNP_GUEST_FW_ERR_MASK GENMASK_ULL(31, 0)#define SNP_GUEST_VMM_ERR_SHIFT 32#define SNP_GUEST_VMM_ERR(x) (((u64)x) << SNP_GUEST_VMM_ERR_SHIFT)#define SNP_GUEST_FW_ERR(x) ((x) & SNP_GUEST_FW_ERR_MASK)#define SNP_GUEST_ERR(vmm_err, fw_err) (SNP_GUEST_VMM_ERR(vmm_err) | \ SNP_GUEST_FW_ERR(fw_err))
#define SNP_GUEST_VMM_ERR_INVALID_LEN 1#define SNP_GUEST_VMM_ERR_BUSY 2
#endif /* __UAPI_LINUX_SEV_GUEST_H_ */