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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_X86_SHARED_TDX_H
#define _ASM_X86_SHARED_TDX_H
#include <linux/bits.h>
#include <linux/types.h>
#define TDX_HYPERCALL_STANDARD 0
#define TDX_HCALL_HAS_OUTPUT BIT(0)
#define TDX_HCALL_ISSUE_STI BIT(1)
#define TDX_CPUID_LEAF_ID 0x21
#define TDX_IDENT "IntelTDX "
#ifndef __ASSEMBLY__
/*
* Used in __tdx_hypercall() to pass down and get back registers' values of
* the TDCALL instruction when requesting services from the VMM.
*
* This is a software only structure and not part of the TDX module/VMM ABI.
*/
struct tdx_hypercall_args {
u64 r10;
u64 r11;
u64 r12;
u64 r13;
u64 r14;
u64 r15;
};
/* Used to request services from the VMM */
u64 __tdx_hypercall(struct tdx_hypercall_args *args, unsigned long flags);
/* Called from __tdx_hypercall() for unrecoverable failure */
void __tdx_hypercall_failed(void);
#endif /* !__ASSEMBLY__ */
#endif /* _ASM_X86_SHARED_TDX_H */
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