71 lines
2.1 KiB
C
71 lines
2.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* This file contains definitions from the Hyper-V Hypervisor Top-Level
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* Functional Specification (TLFS):
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* https://docs.microsoft.com/en-us/virtualization/hyper-v-on-windows/reference/tlfs
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*
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* Copyright (C) 2021, Microsoft, Inc.
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*
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* Author : Michael Kelley <mikelley@microsoft.com>
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*/
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#ifndef _ASM_HYPERV_TLFS_H
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#define _ASM_HYPERV_TLFS_H
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#include <linux/types.h>
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/*
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* All data structures defined in the TLFS that are shared between Hyper-V
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* and a guest VM use Little Endian byte ordering. This matches the default
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* byte ordering of Linux running on ARM64, so no special handling is required.
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*/
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/*
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* Group C Features. See the asm-generic version of hyperv-tlfs.h
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* for a description of Feature Groups.
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*/
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/* Crash MSRs available */
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#define HV_FEATURE_GUEST_CRASH_MSR_AVAILABLE BIT(8)
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/* STIMER direct mode is available */
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#define HV_STIMER_DIRECT_MODE_AVAILABLE BIT(13)
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/*
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* To support arch-generic code calling hv_set/get_register:
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* - On x86, HV_MSR_ indicates an MSR accessed via rdmsrl/wrmsrl
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* - On ARM, HV_MSR_ indicates a VP register accessed via hypercall
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*/
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#define HV_MSR_CRASH_P0 (HV_REGISTER_GUEST_CRASH_P0)
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#define HV_MSR_CRASH_P1 (HV_REGISTER_GUEST_CRASH_P1)
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#define HV_MSR_CRASH_P2 (HV_REGISTER_GUEST_CRASH_P2)
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#define HV_MSR_CRASH_P3 (HV_REGISTER_GUEST_CRASH_P3)
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#define HV_MSR_CRASH_P4 (HV_REGISTER_GUEST_CRASH_P4)
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#define HV_MSR_CRASH_CTL (HV_REGISTER_GUEST_CRASH_CTL)
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#define HV_MSR_VP_INDEX (HV_REGISTER_VP_INDEX)
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#define HV_MSR_TIME_REF_COUNT (HV_REGISTER_TIME_REF_COUNT)
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#define HV_MSR_REFERENCE_TSC (HV_REGISTER_REFERENCE_TSC)
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#define HV_MSR_SINT0 (HV_REGISTER_SINT0)
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#define HV_MSR_SCONTROL (HV_REGISTER_SCONTROL)
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#define HV_MSR_SIEFP (HV_REGISTER_SIEFP)
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#define HV_MSR_SIMP (HV_REGISTER_SIMP)
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#define HV_MSR_EOM (HV_REGISTER_EOM)
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#define HV_MSR_STIMER0_CONFIG (HV_REGISTER_STIMER0_CONFIG)
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#define HV_MSR_STIMER0_COUNT (HV_REGISTER_STIMER0_COUNT)
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union hv_msi_entry {
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u64 as_uint64[2];
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struct {
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u64 address;
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u32 data;
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u32 reserved;
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} __packed;
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};
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#include <asm-generic/hyperv-tlfs.h>
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#endif
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