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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
474a5bb9 WH |
2 | #ifndef __KVM_X86_PMU_H |
3 | #define __KVM_X86_PMU_H | |
4 | ||
5 | #define vcpu_to_pmu(vcpu) (&(vcpu)->arch.pmu) | |
6 | #define pmu_to_vcpu(pmu) (container_of((pmu), struct kvm_vcpu, arch.pmu)) | |
7 | #define pmc_to_pmu(pmc) (&(pmc)->vcpu->arch.pmu) | |
8 | ||
25462f7f WH |
9 | /* retrieve the 4 bits for EN and PMI out of IA32_FIXED_CTR_CTRL */ |
10 | #define fixed_ctrl_field(ctrl_reg, idx) (((ctrl_reg) >> ((idx)*4)) & 0xf) | |
11 | ||
2d7921c4 AM |
12 | #define VMWARE_BACKDOOR_PMC_HOST_TSC 0x10000 |
13 | #define VMWARE_BACKDOOR_PMC_REAL_TIME 0x10001 | |
14 | #define VMWARE_BACKDOOR_PMC_APPARENT_TIME 0x10002 | |
15 | ||
474a5bb9 WH |
16 | struct kvm_event_hw_type_mapping { |
17 | u8 eventsel; | |
18 | u8 unit_mask; | |
19 | unsigned event_type; | |
20 | }; | |
21 | ||
25462f7f WH |
22 | struct kvm_pmu_ops { |
23 | unsigned (*find_arch_event)(struct kvm_pmu *pmu, u8 event_select, | |
24 | u8 unit_mask); | |
25 | unsigned (*find_fixed_event)(int idx); | |
26 | bool (*pmc_is_enabled)(struct kvm_pmc *pmc); | |
27 | struct kvm_pmc *(*pmc_idx_to_pmc)(struct kvm_pmu *pmu, int pmc_idx); | |
0e6f467e PB |
28 | struct kvm_pmc *(*msr_idx_to_pmc)(struct kvm_vcpu *vcpu, unsigned idx, |
29 | u64 *mask); | |
25462f7f WH |
30 | int (*is_valid_msr_idx)(struct kvm_vcpu *vcpu, unsigned idx); |
31 | bool (*is_valid_msr)(struct kvm_vcpu *vcpu, u32 msr); | |
32 | int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr, u64 *data); | |
33 | int (*set_msr)(struct kvm_vcpu *vcpu, struct msr_data *msr_info); | |
34 | void (*refresh)(struct kvm_vcpu *vcpu); | |
35 | void (*init)(struct kvm_vcpu *vcpu); | |
36 | void (*reset)(struct kvm_vcpu *vcpu); | |
37 | }; | |
38 | ||
39 | static inline u64 pmc_bitmask(struct kvm_pmc *pmc) | |
40 | { | |
41 | struct kvm_pmu *pmu = pmc_to_pmu(pmc); | |
42 | ||
43 | return pmu->counter_bitmask[pmc->type]; | |
44 | } | |
45 | ||
46 | static inline u64 pmc_read_counter(struct kvm_pmc *pmc) | |
47 | { | |
48 | u64 counter, enabled, running; | |
49 | ||
50 | counter = pmc->counter; | |
51 | if (pmc->perf_event) | |
52 | counter += perf_event_read_value(pmc->perf_event, | |
53 | &enabled, &running); | |
54 | /* FIXME: Scaling needed? */ | |
55 | return counter & pmc_bitmask(pmc); | |
56 | } | |
57 | ||
58 | static inline void pmc_stop_counter(struct kvm_pmc *pmc) | |
59 | { | |
60 | if (pmc->perf_event) { | |
61 | pmc->counter = pmc_read_counter(pmc); | |
62 | perf_event_release_kernel(pmc->perf_event); | |
63 | pmc->perf_event = NULL; | |
64 | } | |
65 | } | |
66 | ||
67 | static inline bool pmc_is_gp(struct kvm_pmc *pmc) | |
68 | { | |
69 | return pmc->type == KVM_PMC_GP; | |
70 | } | |
71 | ||
72 | static inline bool pmc_is_fixed(struct kvm_pmc *pmc) | |
73 | { | |
74 | return pmc->type == KVM_PMC_FIXED; | |
75 | } | |
76 | ||
77 | static inline bool pmc_is_enabled(struct kvm_pmc *pmc) | |
78 | { | |
79 | return kvm_x86_ops->pmu_ops->pmc_is_enabled(pmc); | |
80 | } | |
81 | ||
82 | /* returns general purpose PMC with the specified MSR. Note that it can be | |
83 | * used for both PERFCTRn and EVNTSELn; that is why it accepts base as a | |
84 | * paramenter to tell them apart. | |
85 | */ | |
86 | static inline struct kvm_pmc *get_gp_pmc(struct kvm_pmu *pmu, u32 msr, | |
87 | u32 base) | |
88 | { | |
89 | if (msr >= base && msr < base + pmu->nr_arch_gp_counters) | |
90 | return &pmu->gp_counters[msr - base]; | |
91 | ||
92 | return NULL; | |
93 | } | |
94 | ||
95 | /* returns fixed PMC with the specified MSR */ | |
96 | static inline struct kvm_pmc *get_fixed_pmc(struct kvm_pmu *pmu, u32 msr) | |
97 | { | |
98 | int base = MSR_CORE_PERF_FIXED_CTR0; | |
99 | ||
100 | if (msr >= base && msr < base + pmu->nr_arch_fixed_counters) | |
101 | return &pmu->fixed_counters[msr - base]; | |
102 | ||
103 | return NULL; | |
104 | } | |
105 | ||
106 | void reprogram_gp_counter(struct kvm_pmc *pmc, u64 eventsel); | |
107 | void reprogram_fixed_counter(struct kvm_pmc *pmc, u8 ctrl, int fixed_idx); | |
108 | void reprogram_counter(struct kvm_pmu *pmu, int pmc_idx); | |
109 | ||
474a5bb9 WH |
110 | void kvm_pmu_deliver_pmi(struct kvm_vcpu *vcpu); |
111 | void kvm_pmu_handle_event(struct kvm_vcpu *vcpu); | |
112 | int kvm_pmu_rdpmc(struct kvm_vcpu *vcpu, unsigned pmc, u64 *data); | |
113 | int kvm_pmu_is_valid_msr_idx(struct kvm_vcpu *vcpu, unsigned idx); | |
114 | bool kvm_pmu_is_valid_msr(struct kvm_vcpu *vcpu, u32 msr); | |
115 | int kvm_pmu_get_msr(struct kvm_vcpu *vcpu, u32 msr, u64 *data); | |
116 | int kvm_pmu_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info); | |
117 | void kvm_pmu_refresh(struct kvm_vcpu *vcpu); | |
118 | void kvm_pmu_reset(struct kvm_vcpu *vcpu); | |
119 | void kvm_pmu_init(struct kvm_vcpu *vcpu); | |
120 | void kvm_pmu_destroy(struct kvm_vcpu *vcpu); | |
66bb8a06 | 121 | int kvm_vm_ioctl_set_pmu_event_filter(struct kvm *kvm, void __user *argp); |
474a5bb9 | 122 | |
2d7921c4 AM |
123 | bool is_vmware_backdoor_pmc(u32 pmc_idx); |
124 | ||
25462f7f WH |
125 | extern struct kvm_pmu_ops intel_pmu_ops; |
126 | extern struct kvm_pmu_ops amd_pmu_ops; | |
474a5bb9 | 127 | #endif /* __KVM_X86_PMU_H */ |