77 lines
1.9 KiB
C
77 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/* Copyright (C) 2021-2022 Intel Corporation */
|
|
#ifndef _ASM_X86_TDX_H
|
|
#define _ASM_X86_TDX_H
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/bits.h>
|
|
|
|
#include <asm/errno.h>
|
|
#include <asm/ptrace.h>
|
|
#include <asm/shared/tdx.h>
|
|
|
|
/*
|
|
* SW-defined error codes.
|
|
*
|
|
* Bits 47:40 == 0xFF indicate Reserved status code class that never used by
|
|
* TDX module.
|
|
*/
|
|
#define TDX_ERROR _BITUL(63)
|
|
#define TDX_SW_ERROR (TDX_ERROR | GENMASK_ULL(47, 40))
|
|
#define TDX_SEAMCALL_VMFAILINVALID (TDX_SW_ERROR | _UL(0xFFFF0000))
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
/*
|
|
* Used by the #VE exception handler to gather the #VE exception
|
|
* info from the TDX module. This is a software only structure
|
|
* and not part of the TDX module/VMM ABI.
|
|
*/
|
|
struct ve_info {
|
|
u64 exit_reason;
|
|
u64 exit_qual;
|
|
/* Guest Linear (virtual) Address */
|
|
u64 gla;
|
|
/* Guest Physical Address */
|
|
u64 gpa;
|
|
u32 instr_len;
|
|
u32 instr_info;
|
|
};
|
|
|
|
#ifdef CONFIG_INTEL_TDX_GUEST
|
|
|
|
void __init tdx_early_init(void);
|
|
|
|
void tdx_get_ve_info(struct ve_info *ve);
|
|
|
|
bool tdx_handle_virt_exception(struct pt_regs *regs, struct ve_info *ve);
|
|
|
|
void tdx_safe_halt(void);
|
|
|
|
bool tdx_early_handle_ve(struct pt_regs *regs);
|
|
|
|
int tdx_mcall_get_report0(u8 *reportdata, u8 *tdreport);
|
|
|
|
#else
|
|
|
|
static inline void tdx_early_init(void) { };
|
|
static inline void tdx_safe_halt(void) { };
|
|
|
|
static inline bool tdx_early_handle_ve(struct pt_regs *regs) { return false; }
|
|
|
|
#endif /* CONFIG_INTEL_TDX_GUEST */
|
|
|
|
#if defined(CONFIG_KVM_GUEST) && defined(CONFIG_INTEL_TDX_GUEST)
|
|
long tdx_kvm_hypercall(unsigned int nr, unsigned long p1, unsigned long p2,
|
|
unsigned long p3, unsigned long p4);
|
|
#else
|
|
static inline long tdx_kvm_hypercall(unsigned int nr, unsigned long p1,
|
|
unsigned long p2, unsigned long p3,
|
|
unsigned long p4)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
#endif /* CONFIG_INTEL_TDX_GUEST && CONFIG_KVM_GUEST */
|
|
#endif /* !__ASSEMBLY__ */
|
|
#endif /* _ASM_X86_TDX_H */
|