1// SPDX-License-Identifier: GPL-2.0-only
2
3/*
4 * Privileged (non-hypervisor) host registers to save.
5 */
6#include "asm/guest-state-buffer.h"
7
8struct p9_host_os_sprs {
9	unsigned long iamr;
10	unsigned long amr;
11
12	unsigned int pmc1;
13	unsigned int pmc2;
14	unsigned int pmc3;
15	unsigned int pmc4;
16	unsigned int pmc5;
17	unsigned int pmc6;
18	unsigned long mmcr0;
19	unsigned long mmcr1;
20	unsigned long mmcr2;
21	unsigned long mmcr3;
22	unsigned long mmcra;
23	unsigned long siar;
24	unsigned long sier1;
25	unsigned long sier2;
26	unsigned long sier3;
27	unsigned long sdar;
28};
29
30static inline bool nesting_enabled(struct kvm *kvm)
31{
32	return kvm->arch.nested_enable && kvm_is_radix(kvm);
33}
34
35bool load_vcpu_state(struct kvm_vcpu *vcpu,
36			   struct p9_host_os_sprs *host_os_sprs);
37void store_vcpu_state(struct kvm_vcpu *vcpu);
38void save_p9_host_os_sprs(struct p9_host_os_sprs *host_os_sprs);
39void restore_p9_host_os_sprs(struct kvm_vcpu *vcpu,
40				    struct p9_host_os_sprs *host_os_sprs);
41void switch_pmu_to_guest(struct kvm_vcpu *vcpu,
42			    struct p9_host_os_sprs *host_os_sprs);
43void switch_pmu_to_host(struct kvm_vcpu *vcpu,
44			    struct p9_host_os_sprs *host_os_sprs);
45
46#ifdef CONFIG_KVM_BOOK3S_HV_P9_TIMING
47void accumulate_time(struct kvm_vcpu *vcpu, struct kvmhv_tb_accumulator *next);
48#define start_timing(vcpu, next) accumulate_time(vcpu, next)
49#define end_timing(vcpu) accumulate_time(vcpu, NULL)
50#else
51#define accumulate_time(vcpu, next) do {} while (0)
52#define start_timing(vcpu, next) do {} while (0)
53#define end_timing(vcpu) do {} while (0)
54#endif
55
56static inline void __kvmppc_set_msr_hv(struct kvm_vcpu *vcpu, u64 val)
57{
58	vcpu->arch.shregs.msr = val;
59	kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_MSR);
60}
61
62static inline u64 __kvmppc_get_msr_hv(struct kvm_vcpu *vcpu)
63{
64	WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_MSR) < 0);
65	return vcpu->arch.shregs.msr;
66}
67
68#define KVMPPC_BOOK3S_HV_VCPU_ACCESSOR_SET(reg, size, iden)		\
69static inline void kvmppc_set_##reg ##_hv(struct kvm_vcpu *vcpu, u##size val)	\
70{									\
71	vcpu->arch.reg = val;						\
72	kvmhv_nestedv2_mark_dirty(vcpu, iden);				\
73}
74
75#define KVMPPC_BOOK3S_HV_VCPU_ACCESSOR_GET(reg, size, iden)		\
76static inline u##size kvmppc_get_##reg ##_hv(struct kvm_vcpu *vcpu)	\
77{									\
78	kvmhv_nestedv2_cached_reload(vcpu, iden);			\
79	return vcpu->arch.reg;						\
80}
81
82#define KVMPPC_BOOK3S_HV_VCPU_ACCESSOR(reg, size, iden)			\
83	KVMPPC_BOOK3S_HV_VCPU_ACCESSOR_SET(reg, size, iden)		\
84	KVMPPC_BOOK3S_HV_VCPU_ACCESSOR_GET(reg, size, iden)		\
85
86#define KVMPPC_BOOK3S_HV_VCPU_ARRAY_ACCESSOR_SET(reg, size, iden)	\
87static inline void kvmppc_set_##reg ##_hv(struct kvm_vcpu *vcpu, int i, u##size val)	\
88{									\
89	vcpu->arch.reg[i] = val;					\
90	kvmhv_nestedv2_mark_dirty(vcpu, iden(i));			\
91}
92
93#define KVMPPC_BOOK3S_HV_VCPU_ARRAY_ACCESSOR_GET(reg, size, iden)	\
94static inline u##size kvmppc_get_##reg ##_hv(struct kvm_vcpu *vcpu, int i)	\
95{									\
96	WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, iden(i)) < 0);	\
97	return vcpu->arch.reg[i];					\
98}
99
100#define KVMPPC_BOOK3S_HV_VCPU_ARRAY_ACCESSOR(reg, size, iden)		\
101	KVMPPC_BOOK3S_HV_VCPU_ARRAY_ACCESSOR_SET(reg, size, iden)	\
102	KVMPPC_BOOK3S_HV_VCPU_ARRAY_ACCESSOR_GET(reg, size, iden)	\
103
104KVMPPC_BOOK3S_HV_VCPU_ACCESSOR(mmcra, 64, KVMPPC_GSID_MMCRA)
105KVMPPC_BOOK3S_HV_VCPU_ACCESSOR(hfscr, 64, KVMPPC_GSID_HFSCR)
106KVMPPC_BOOK3S_HV_VCPU_ACCESSOR(fscr, 64, KVMPPC_GSID_FSCR)
107KVMPPC_BOOK3S_HV_VCPU_ACCESSOR(dscr, 64, KVMPPC_GSID_DSCR)
108KVMPPC_BOOK3S_HV_VCPU_ACCESSOR(purr, 64, KVMPPC_GSID_PURR)
109KVMPPC_BOOK3S_HV_VCPU_ACCESSOR(spurr, 64, KVMPPC_GSID_SPURR)
110KVMPPC_BOOK3S_HV_VCPU_ACCESSOR(amr, 64, KVMPPC_GSID_AMR)
111KVMPPC_BOOK3S_HV_VCPU_ACCESSOR(uamor, 64, KVMPPC_GSID_UAMOR)
112KVMPPC_BOOK3S_HV_VCPU_ACCESSOR(siar, 64, KVMPPC_GSID_SIAR)
113KVMPPC_BOOK3S_HV_VCPU_ACCESSOR(sdar, 64, KVMPPC_GSID_SDAR)
114KVMPPC_BOOK3S_HV_VCPU_ACCESSOR(iamr, 64, KVMPPC_GSID_IAMR)
115KVMPPC_BOOK3S_HV_VCPU_ACCESSOR(dawr0, 64, KVMPPC_GSID_DAWR0)
116KVMPPC_BOOK3S_HV_VCPU_ACCESSOR(dawr1, 64, KVMPPC_GSID_DAWR1)
117KVMPPC_BOOK3S_HV_VCPU_ACCESSOR(dawrx0, 64, KVMPPC_GSID_DAWRX0)
118KVMPPC_BOOK3S_HV_VCPU_ACCESSOR(dawrx1, 64, KVMPPC_GSID_DAWRX1)
119KVMPPC_BOOK3S_HV_VCPU_ACCESSOR(ciabr, 64, KVMPPC_GSID_CIABR)
120KVMPPC_BOOK3S_HV_VCPU_ACCESSOR(wort, 64, KVMPPC_GSID_WORT)
121KVMPPC_BOOK3S_HV_VCPU_ACCESSOR(ppr, 64, KVMPPC_GSID_PPR)
122KVMPPC_BOOK3S_HV_VCPU_ACCESSOR(ctrl, 64, KVMPPC_GSID_CTRL);
123
124KVMPPC_BOOK3S_HV_VCPU_ARRAY_ACCESSOR(mmcr, 64, KVMPPC_GSID_MMCR)
125KVMPPC_BOOK3S_HV_VCPU_ARRAY_ACCESSOR(sier, 64, KVMPPC_GSID_SIER)
126KVMPPC_BOOK3S_HV_VCPU_ARRAY_ACCESSOR(pmc, 32, KVMPPC_GSID_PMC)
127
128KVMPPC_BOOK3S_HV_VCPU_ACCESSOR(pspb, 32, KVMPPC_GSID_PSPB)
129