xref: /openbmc/linux/arch/x86/kvm/hyperv.h (revision be709d48)
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 
27 #include <linux/kvm_host.h>
28 
29 static inline struct kvm_vcpu_hv *vcpu_to_hv_vcpu(struct kvm_vcpu *vcpu)
30 {
31 	return &vcpu->arch.hyperv;
32 }
33 
34 static inline struct kvm_vcpu *hv_vcpu_to_vcpu(struct kvm_vcpu_hv *hv_vcpu)
35 {
36 	struct kvm_vcpu_arch *arch;
37 
38 	arch = container_of(hv_vcpu, struct kvm_vcpu_arch, hyperv);
39 	return container_of(arch, struct kvm_vcpu, arch);
40 }
41 
42 static inline struct kvm_vcpu_hv_synic *vcpu_to_synic(struct kvm_vcpu *vcpu)
43 {
44 	return &vcpu->arch.hyperv.synic;
45 }
46 
47 static inline struct kvm_vcpu *synic_to_vcpu(struct kvm_vcpu_hv_synic *synic)
48 {
49 	return hv_vcpu_to_vcpu(container_of(synic, struct kvm_vcpu_hv, synic));
50 }
51 
52 int kvm_hv_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data, bool host);
53 int kvm_hv_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata, bool host);
54 
55 bool kvm_hv_hypercall_enabled(struct kvm *kvm);
56 int kvm_hv_hypercall(struct kvm_vcpu *vcpu);
57 
58 void kvm_hv_irq_routing_update(struct kvm *kvm);
59 int kvm_hv_synic_set_irq(struct kvm *kvm, u32 vcpu_id, u32 sint);
60 void kvm_hv_synic_send_eoi(struct kvm_vcpu *vcpu, int vector);
61 int kvm_hv_activate_synic(struct kvm_vcpu *vcpu, bool dont_zero_synic_pages);
62 
63 void kvm_hv_vcpu_init(struct kvm_vcpu *vcpu);
64 void kvm_hv_vcpu_postcreate(struct kvm_vcpu *vcpu);
65 void kvm_hv_vcpu_uninit(struct kvm_vcpu *vcpu);
66 
67 bool kvm_hv_assist_page_enabled(struct kvm_vcpu *vcpu);
68 bool kvm_hv_get_assist_page(struct kvm_vcpu *vcpu,
69 			    struct hv_vp_assist_page *assist_page);
70 
71 static inline struct kvm_vcpu_hv_stimer *vcpu_to_stimer(struct kvm_vcpu *vcpu,
72 							int timer_index)
73 {
74 	return &vcpu_to_hv_vcpu(vcpu)->stimer[timer_index];
75 }
76 
77 static inline struct kvm_vcpu *stimer_to_vcpu(struct kvm_vcpu_hv_stimer *stimer)
78 {
79 	struct kvm_vcpu_hv *hv_vcpu;
80 
81 	hv_vcpu = container_of(stimer - stimer->index, struct kvm_vcpu_hv,
82 			       stimer[0]);
83 	return hv_vcpu_to_vcpu(hv_vcpu);
84 }
85 
86 static inline bool kvm_hv_has_stimer_pending(struct kvm_vcpu *vcpu)
87 {
88 	return !bitmap_empty(vcpu->arch.hyperv.stimer_pending_bitmap,
89 			     HV_SYNIC_STIMER_COUNT);
90 }
91 
92 void kvm_hv_process_stimers(struct kvm_vcpu *vcpu);
93 
94 void kvm_hv_setup_tsc_page(struct kvm *kvm,
95 			   struct pvclock_vcpu_time_info *hv_clock);
96 
97 void kvm_hv_init_vm(struct kvm *kvm);
98 void kvm_hv_destroy_vm(struct kvm *kvm);
99 int kvm_vm_ioctl_hv_eventfd(struct kvm *kvm, struct kvm_hyperv_eventfd *args);
100 int kvm_vcpu_ioctl_get_hv_cpuid(struct kvm_vcpu *vcpu, struct kvm_cpuid2 *cpuid,
101 				struct kvm_cpuid_entry2 __user *entries);
102 
103 #endif
104