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