1/* SPDX-License-Identifier: GPL-2.0-only */
  2/*
  3 * KVM Microsoft Hyper-V emulation
  4 *
  5 * derived from arch/x86/kvm/x86.c
  6 *
  7 * Copyright (C) 2006 Qumranet, Inc.
  8 * Copyright (C) 2008 Qumranet, Inc.
  9 * Copyright IBM Corporation, 2008
 10 * Copyright 2010 Red Hat, Inc. and/or its affiliates.
 11 * Copyright (C) 2015 Andrey Smetanin <asmetanin@virtuozzo.com>
 12 *
 13 * Authors:
 14 *   Avi Kivity   <avi@qumranet.com>
 15 *   Yaniv Kamay  <yaniv@qumranet.com>
 16 *   Amit Shah    <amit.shah@qumranet.com>
 17 *   Ben-Ami Yassour <benami@il.ibm.com>
 18 *   Andrey Smetanin <asmetanin@virtuozzo.com>
 19 */
 20
 21#ifndef __ARCH_X86_KVM_HYPERV_H__
 22#define __ARCH_X86_KVM_HYPERV_H__
 23
 24#include <linux/kvm_host.h>
 25
 26static inline struct kvm_vcpu_hv *vcpu_to_hv_vcpu(struct kvm_vcpu *vcpu)
 27{
 28	return &vcpu->arch.hyperv;
 29}
 30
 31static inline struct kvm_vcpu *hv_vcpu_to_vcpu(struct kvm_vcpu_hv *hv_vcpu)
 32{
 33	struct kvm_vcpu_arch *arch;
 34
 35	arch = container_of(hv_vcpu, struct kvm_vcpu_arch, hyperv);
 36	return container_of(arch, struct kvm_vcpu, arch);
 37}
 38
 39static inline struct kvm_vcpu_hv_synic *vcpu_to_synic(struct kvm_vcpu *vcpu)
 40{
 41	return &vcpu->arch.hyperv.synic;
 42}
 43
 44static inline struct kvm_vcpu *synic_to_vcpu(struct kvm_vcpu_hv_synic *synic)
 45{
 46	return hv_vcpu_to_vcpu(container_of(synic, struct kvm_vcpu_hv, synic));
 47}
 48
 49int kvm_hv_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data, bool host);
 50int kvm_hv_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata, bool host);
 51
 52bool kvm_hv_hypercall_enabled(struct kvm *kvm);
 53int kvm_hv_hypercall(struct kvm_vcpu *vcpu);
 54
 55void kvm_hv_irq_routing_update(struct kvm *kvm);
 56int kvm_hv_synic_set_irq(struct kvm *kvm, u32 vcpu_id, u32 sint);
 57void kvm_hv_synic_send_eoi(struct kvm_vcpu *vcpu, int vector);
 58int kvm_hv_activate_synic(struct kvm_vcpu *vcpu, bool dont_zero_synic_pages);
 59
 60void kvm_hv_vcpu_init(struct kvm_vcpu *vcpu);
 61void kvm_hv_vcpu_postcreate(struct kvm_vcpu *vcpu);
 62void kvm_hv_vcpu_uninit(struct kvm_vcpu *vcpu);
 63
 64bool kvm_hv_assist_page_enabled(struct kvm_vcpu *vcpu);
 65bool kvm_hv_get_assist_page(struct kvm_vcpu *vcpu,
 66			    struct hv_vp_assist_page *assist_page);
 67
 68static inline struct kvm_vcpu_hv_stimer *vcpu_to_stimer(struct kvm_vcpu *vcpu,
 69							int timer_index)
 70{
 71	return &vcpu_to_hv_vcpu(vcpu)->stimer[timer_index];
 72}
 73
 74static inline struct kvm_vcpu *stimer_to_vcpu(struct kvm_vcpu_hv_stimer *stimer)
 75{
 76	struct kvm_vcpu_hv *hv_vcpu;
 77
 78	hv_vcpu = container_of(stimer - stimer->index, struct kvm_vcpu_hv,
 79			       stimer[0]);
 80	return hv_vcpu_to_vcpu(hv_vcpu);
 81}
 82
 83static inline bool kvm_hv_has_stimer_pending(struct kvm_vcpu *vcpu)
 84{
 85	return !bitmap_empty(vcpu->arch.hyperv.stimer_pending_bitmap,
 86			     HV_SYNIC_STIMER_COUNT);
 87}
 88
 89void kvm_hv_process_stimers(struct kvm_vcpu *vcpu);
 90
 91void kvm_hv_setup_tsc_page(struct kvm *kvm,
 92			   struct pvclock_vcpu_time_info *hv_clock);
 93
 94void kvm_hv_init_vm(struct kvm *kvm);
 95void kvm_hv_destroy_vm(struct kvm *kvm);
 96int kvm_vm_ioctl_hv_eventfd(struct kvm *kvm, struct kvm_hyperv_eventfd *args);
 97int kvm_vcpu_ioctl_get_hv_cpuid(struct kvm_vcpu *vcpu, struct kvm_cpuid2 *cpuid,
 98				struct kvm_cpuid_entry2 __user *entries);
 99
100#endif