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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.
*/
/*
* 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)
/*
* To support arch-generic code calling hv_set/get_register:
* - On x86, HV_MSR_ indicates an MSR accessed via rdmsrl/wrmsrl
* - On ARM, HV_MSR_ indicates a VP register accessed via hypercall
*/
#define HV_MSR_CRASH_P0 (HV_REGISTER_CRASH_P0)
#define HV_MSR_CRASH_P1 (HV_REGISTER_CRASH_P1)
#define HV_MSR_CRASH_P2 (HV_REGISTER_CRASH_P2)
#define HV_MSR_CRASH_P3 (HV_REGISTER_CRASH_P3)
#define HV_MSR_CRASH_P4 (HV_REGISTER_CRASH_P4)
#define HV_MSR_CRASH_CTL (HV_REGISTER_CRASH_CTL)
#define HV_MSR_VP_INDEX (HV_REGISTER_VP_INDEX)
#define HV_MSR_TIME_REF_COUNT (HV_REGISTER_TIME_REF_COUNT)
#define HV_MSR_REFERENCE_TSC (HV_REGISTER_REFERENCE_TSC)
#define HV_MSR_SINT0 (HV_REGISTER_SINT0)
#define HV_MSR_SCONTROL (HV_REGISTER_SCONTROL)
#define HV_MSR_SIEFP (HV_REGISTER_SIEFP)
#define HV_MSR_SIMP (HV_REGISTER_SIMP)
#define HV_MSR_EOM (HV_REGISTER_EOM)
#define HV_MSR_STIMER0_CONFIG (HV_REGISTER_STIMER0_CONFIG)
#define HV_MSR_STIMER0_COUNT (HV_REGISTER_STIMER0_COUNT)
union hv_msi_entry {
u64 as_uint64[2];
struct {
u64 address;
u32 data;
u32 reserved;
} __packed;
};
#include <asm-generic/hyperv-tlfs.h>
#endif