/* SPDX-License-Identifier: GPL-2.0 */ /* * Linux-specific definitions for managing interactions with Microsoft's * Hyper-V hypervisor. The definitions in this file are specific to * the ARM64 architecture. See include/asm-generic/mshyperv.h for * definitions are that architecture independent. * * Definitions that are derived from Hyper-V code or headers should not go in * this file, but should instead go in the relevant files in include/hyperv. * * Copyright (C) 2021, Microsoft, Inc. * * Author : Michael Kelley <mikelley@microsoft.com> */ #ifndef _ASM_MSHYPERV_H #define _ASM_MSHYPERV_H #include <linux/types.h> #include <linux/arm-smccc.h> #include <hyperv/hvhdk.h> /* * Declare calls to get and set Hyper-V VP register values on ARM64, which * requires a hypercall. */ void hv_set_vpreg(u32 reg, u64 value); u64 hv_get_vpreg(u32 reg); void hv_get_vpreg_128(u32 reg, struct hv_get_vp_registers_output *result); static inline void hv_set_msr(unsigned int reg, u64 value) { hv_set_vpreg(reg, value); } static inline u64 hv_get_msr(unsigned int reg) { return hv_get_vpreg(reg); } /* SMCCC hypercall parameters */ #define HV_SMCCC_FUNC_NUMBER 1 #define HV_FUNC_ID ARM_SMCCC_CALL_VAL( \ ARM_SMCCC_STD_CALL, \ ARM_SMCCC_SMC_64, \ ARM_SMCCC_OWNER_VENDOR_HYP, \ HV_SMCCC_FUNC_NUMBER) #include <asm-generic/mshyperv.h> #endif