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