/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ /* * Userspace interface for TDX guest driver * * Copyright (C) 2022 Intel Corporation */ #ifndef _LINUX_TDX_GUEST_H_ #define _LINUX_TDX_GUEST_H_ #include <linux/ioctl.h> #include <linux/types.h> /* Length of the REPORTDATA used in TDG.MR.REPORT TDCALL */ #define TDX_REPORTDATA_LEN 64 /* Length of TDREPORT used in TDG.MR.REPORT TDCALL */ #define TDX_REPORT_LEN 1024 /** * struct tdx_report_req - Request struct for TDX_CMD_GET_REPORT0 IOCTL. * * @reportdata: User buffer with REPORTDATA to be included into TDREPORT. * Typically it can be some nonce provided by attestation * service, so the generated TDREPORT can be uniquely verified. * @tdreport: User buffer to store TDREPORT output from TDCALL[TDG.MR.REPORT]. */ struct tdx_report_req { __u8 reportdata[TDX_REPORTDATA_LEN]; __u8 tdreport[TDX_REPORT_LEN]; }; /* * TDX_CMD_GET_REPORT0 - Get TDREPORT0 (a.k.a. TDREPORT subtype 0) using * TDCALL[TDG.MR.REPORT] * * Return 0 on success, -EIO on TDCALL execution failure, and * standard errno on other general error cases. */ #define TDX_CMD_GET_REPORT0 _IOWR('T', 1, struct tdx_report_req) #endif /* _LINUX_TDX_GUEST_H_ */