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/* SPDX-License-Identifier: GPL-2.0 */
/*
* This file contains definitions from the Hyper-V Hypervisor Top-Level
* Functional Specification (TLFS):
* https://docs.microsoft.com/en-us/virtualization/hyper-v-on-windows/reference/tlfs
*
* Copyright (C) 2021, Microsoft, Inc.
*
* Author : Michael Kelley <mikelley@microsoft.com>
*/
#ifndef _ASM_HYPERV_TLFS_H
#define _ASM_HYPERV_TLFS_H
#include <linux/types.h>
/*
* All data structures defined in the TLFS that are shared between Hyper-V
* and a guest VM use Little Endian byte ordering. This matches the default
* byte ordering of Linux running on ARM64, so no special handling is required.
*/
/*
* These Hyper-V registers provide information equivalent to the CPUID
* instruction on x86/x64.
*/
#define HV_REGISTER_HYPERVISOR_VERSION 0x00000100 /*CPUID 0x40000002 */
#define HV_REGISTER_FEATURES 0x00000200 /*CPUID 0x40000003 */
#define HV_REGISTER_ENLIGHTENMENTS 0x00000201 /*CPUID 0x40000004 */
/*
* Group C Features. See the asm-generic version of hyperv-tlfs.h
* for a description of Feature Groups.
*/
/* Crash MSRs available */
#define HV_FEATURE_GUEST_CRASH_MSR_AVAILABLE BIT(8)
/* STIMER direct mode is available */
#define HV_STIMER_DIRECT_MODE_AVAILABLE BIT(13)
/*
* Synthetic register definitions equivalent to MSRs on x86/x64
*/
#define HV_REGISTER_CRASH_P0 0x00000210
#define HV_REGISTER_CRASH_P1 0x00000211
#define HV_REGISTER_CRASH_P2 0x00000212
#define HV_REGISTER_CRASH_P3 0x00000213
#define HV_REGISTER_CRASH_P4 0x00000214
#define HV_REGISTER_CRASH_CTL 0x00000215
#define HV_REGISTER_GUEST_OSID 0x00090002
#define HV_REGISTER_VP_INDEX 0x00090003
#define HV_REGISTER_TIME_REF_COUNT 0x00090004
#define HV_REGISTER_REFERENCE_TSC 0x00090017
#define HV_REGISTER_SINT0 0x000A0000
#define HV_REGISTER_SCONTROL 0x000A0010
#define HV_REGISTER_SIEFP 0x000A0012
#define HV_REGISTER_SIMP 0x000A0013
#define HV_REGISTER_EOM 0x000A0014
#define HV_REGISTER_STIMER0_CONFIG 0x000B0000
#define HV_REGISTER_STIMER0_COUNT 0x000B0001
union hv_msi_entry {
u64 as_uint64[2];
struct {
u64 address;
u32 data;
u32 reserved;
} __packed;
};
#include <asm-generic/hyperv-tlfs.h>
#endif