/* 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