LXR linux/arch/arm64/include/asm/hyperv-tlfs.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2
   3/*
   4 * This file contains definitions from the Hyper-V Hypervisor Top-Level
   5 * Functional Specification (TLFS):
   6 * https://docs.microsoft.com/en-us/virtualization/hyper-v-on-windows/reference/tlfs
   7 *
   8 * Copyright (C) 2021, Microsoft, Inc.
   9 *
  10 * Author : Michael Kelley <mikelley@microsoft.com>
  11 */
  12
  13#ifndef _ASM_HYPERV_TLFS_H
  14#define _ASM_HYPERV_TLFS_H
  15
  16#include <linux/types.h>
  17
  18/*
  19 * All data structures defined in the TLFS that are shared between Hyper-V
  20 * and a guest VM use Little Endian byte ordering.  This matches the default
  21 * byte ordering of Linux running on ARM64, so no special handling is required.
  22 */
  23
  24/*
  25 * These Hyper-V registers provide information equivalent to the CPUID
  26 * instruction on x86/x64.
  27 */
  28#define HV_REGISTER_HYPERVISOR_VERSION          0x00000100 /*CPUID 0x40000002 */
  29#define HV_REGISTER_FEATURES                    0x00000200 /*CPUID 0x40000003 */
  30#define HV_REGISTER_ENLIGHTENMENTS              0x00000201 /*CPUID 0x40000004 */
  31
  32/*
  33 * Group C Features. See the asm-generic version of hyperv-tlfs.h
  34 * for a description of Feature Groups.
  35 */
  36
  37/* Crash MSRs available */
  38#define HV_FEATURE_GUEST_CRASH_MSR_AVAILABLE    BIT(8)
  39
  40/* STIMER direct mode is available */
  41#define HV_STIMER_DIRECT_MODE_AVAILABLE         BIT(13)
  42
  43/*
  44 * Synthetic register definitions equivalent to MSRs on x86/x64
  45 */
  46#define HV_REGISTER_CRASH_P0            0x00000210
  47#define HV_REGISTER_CRASH_P1            0x00000211
  48#define HV_REGISTER_CRASH_P2            0x00000212
  49#define HV_REGISTER_CRASH_P3            0x00000213
  50#define HV_REGISTER_CRASH_P4            0x00000214
  51#define HV_REGISTER_CRASH_CTL           0x00000215
  52
  53#define HV_REGISTER_GUEST_OSID          0x00090002
  54#define HV_REGISTER_VP_INDEX            0x00090003
  55#define HV_REGISTER_TIME_REF_COUNT      0x00090004
  56#define HV_REGISTER_REFERENCE_TSC       0x00090017
  57
  58#define HV_REGISTER_SINT0               0x000A0000
  59#define HV_REGISTER_SCONTROL            0x000A0010
  60#define HV_REGISTER_SIEFP               0x000A0012
  61#define HV_REGISTER_SIMP                0x000A0013
  62#define HV_REGISTER_EOM                 0x000A0014
  63
  64#define HV_REGISTER_STIMER0_CONFIG      0x000B0000
  65#define HV_REGISTER_STIMER0_COUNT       0x000B0001
  66
  67#include <asm-generic/hyperv-tlfs.h>
  68
  69#endif
  70