95 lines
2.2 KiB
C
95 lines
2.2 KiB
C
/* 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>
|
|
|
|
struct snp_report_req {
|
|
/* user data that should be included in the report */
|
|
__u8 user_data[64];
|
|
|
|
/* 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_VMM_ERR_INVALID_LEN 1
|
|
#define SNP_GUEST_VMM_ERR_BUSY 2
|
|
|
|
#endif /* __UAPI_LINUX_SEV_GUEST_H_ */
|