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caab277b | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
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2 | /* |
3 | * Copyright (C) 2015 Linaro Ltd. | |
4 | * Author: Shannon Zhao <shannon.zhao@linaro.org> | |
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5 | */ |
6 | ||
7 | #ifndef __ASM_ARM_KVM_PMU_H | |
8 | #define __ASM_ARM_KVM_PMU_H | |
9 | ||
04fe4726 SZ |
10 | #include <linux/perf_event.h> |
11 | #include <asm/perf_event.h> | |
12 | ||
051ff581 | 13 | #define ARMV8_PMU_CYCLE_IDX (ARMV8_PMU_MAX_COUNTERS - 1) |
80f393a2 | 14 | #define ARMV8_PMU_MAX_COUNTER_PAIRS ((ARMV8_PMU_MAX_COUNTERS + 1) >> 1) |
051ff581 | 15 | |
0efce9da SH |
16 | #ifdef CONFIG_KVM_ARM_PMU |
17 | ||
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18 | struct kvm_pmc { |
19 | u8 idx; /* index into the pmu->pmc array */ | |
20 | struct perf_event *perf_event; | |
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21 | }; |
22 | ||
23 | struct kvm_pmu { | |
24 | int irq_num; | |
25 | struct kvm_pmc pmc[ARMV8_PMU_MAX_COUNTERS]; | |
80f393a2 | 26 | DECLARE_BITMAP(chained, ARMV8_PMU_MAX_COUNTER_PAIRS); |
04fe4726 | 27 | bool ready; |
a2befacf | 28 | bool created; |
b02386eb | 29 | bool irq_level; |
04fe4726 | 30 | }; |
ab946834 SZ |
31 | |
32 | #define kvm_arm_pmu_v3_ready(v) ((v)->arch.pmu.ready) | |
bb0c70bc | 33 | #define kvm_arm_pmu_irq_initialized(v) ((v)->arch.pmu.irq_num >= VGIC_NR_SGIS) |
051ff581 SZ |
34 | u64 kvm_pmu_get_counter_value(struct kvm_vcpu *vcpu, u64 select_idx); |
35 | void kvm_pmu_set_counter_value(struct kvm_vcpu *vcpu, u64 select_idx, u64 val); | |
96b0eebc | 36 | u64 kvm_pmu_valid_counter_mask(struct kvm_vcpu *vcpu); |
bca031e2 | 37 | void kvm_pmu_vcpu_init(struct kvm_vcpu *vcpu); |
2aa36e98 | 38 | void kvm_pmu_vcpu_reset(struct kvm_vcpu *vcpu); |
5f0a714a | 39 | void kvm_pmu_vcpu_destroy(struct kvm_vcpu *vcpu); |
418e5ca8 AM |
40 | void kvm_pmu_disable_counter_mask(struct kvm_vcpu *vcpu, u64 val); |
41 | void kvm_pmu_enable_counter_mask(struct kvm_vcpu *vcpu, u64 val); | |
b02386eb SZ |
42 | void kvm_pmu_flush_hwstate(struct kvm_vcpu *vcpu); |
43 | void kvm_pmu_sync_hwstate(struct kvm_vcpu *vcpu); | |
3dbbdf78 CD |
44 | bool kvm_pmu_should_notify_user(struct kvm_vcpu *vcpu); |
45 | void kvm_pmu_update_run(struct kvm_vcpu *vcpu); | |
7a0adc70 | 46 | void kvm_pmu_software_increment(struct kvm_vcpu *vcpu, u64 val); |
76993739 | 47 | void kvm_pmu_handle_pmcr(struct kvm_vcpu *vcpu, u64 val); |
7f766358 SZ |
48 | void kvm_pmu_set_counter_event_type(struct kvm_vcpu *vcpu, u64 data, |
49 | u64 select_idx); | |
808e7381 | 50 | bool kvm_arm_support_pmu_v3(void); |
bb0c70bc SZ |
51 | int kvm_arm_pmu_v3_set_attr(struct kvm_vcpu *vcpu, |
52 | struct kvm_device_attr *attr); | |
53 | int kvm_arm_pmu_v3_get_attr(struct kvm_vcpu *vcpu, | |
54 | struct kvm_device_attr *attr); | |
55 | int kvm_arm_pmu_v3_has_attr(struct kvm_vcpu *vcpu, | |
56 | struct kvm_device_attr *attr); | |
a2befacf | 57 | int kvm_arm_pmu_v3_enable(struct kvm_vcpu *vcpu); |
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58 | #else |
59 | struct kvm_pmu { | |
60 | }; | |
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61 | |
62 | #define kvm_arm_pmu_v3_ready(v) (false) | |
bb0c70bc | 63 | #define kvm_arm_pmu_irq_initialized(v) (false) |
051ff581 SZ |
64 | static inline u64 kvm_pmu_get_counter_value(struct kvm_vcpu *vcpu, |
65 | u64 select_idx) | |
66 | { | |
67 | return 0; | |
68 | } | |
69 | static inline void kvm_pmu_set_counter_value(struct kvm_vcpu *vcpu, | |
70 | u64 select_idx, u64 val) {} | |
96b0eebc SZ |
71 | static inline u64 kvm_pmu_valid_counter_mask(struct kvm_vcpu *vcpu) |
72 | { | |
73 | return 0; | |
74 | } | |
bca031e2 | 75 | static inline void kvm_pmu_vcpu_init(struct kvm_vcpu *vcpu) {} |
2aa36e98 | 76 | static inline void kvm_pmu_vcpu_reset(struct kvm_vcpu *vcpu) {} |
5f0a714a | 77 | static inline void kvm_pmu_vcpu_destroy(struct kvm_vcpu *vcpu) {} |
418e5ca8 AM |
78 | static inline void kvm_pmu_disable_counter_mask(struct kvm_vcpu *vcpu, u64 val) {} |
79 | static inline void kvm_pmu_enable_counter_mask(struct kvm_vcpu *vcpu, u64 val) {} | |
b02386eb SZ |
80 | static inline void kvm_pmu_flush_hwstate(struct kvm_vcpu *vcpu) {} |
81 | static inline void kvm_pmu_sync_hwstate(struct kvm_vcpu *vcpu) {} | |
3dbbdf78 CD |
82 | static inline bool kvm_pmu_should_notify_user(struct kvm_vcpu *vcpu) |
83 | { | |
84 | return false; | |
85 | } | |
86 | static inline void kvm_pmu_update_run(struct kvm_vcpu *vcpu) {} | |
7a0adc70 | 87 | static inline void kvm_pmu_software_increment(struct kvm_vcpu *vcpu, u64 val) {} |
76993739 | 88 | static inline void kvm_pmu_handle_pmcr(struct kvm_vcpu *vcpu, u64 val) {} |
7f766358 SZ |
89 | static inline void kvm_pmu_set_counter_event_type(struct kvm_vcpu *vcpu, |
90 | u64 data, u64 select_idx) {} | |
808e7381 | 91 | static inline bool kvm_arm_support_pmu_v3(void) { return false; } |
bb0c70bc SZ |
92 | static inline int kvm_arm_pmu_v3_set_attr(struct kvm_vcpu *vcpu, |
93 | struct kvm_device_attr *attr) | |
94 | { | |
95 | return -ENXIO; | |
96 | } | |
97 | static inline int kvm_arm_pmu_v3_get_attr(struct kvm_vcpu *vcpu, | |
98 | struct kvm_device_attr *attr) | |
99 | { | |
100 | return -ENXIO; | |
101 | } | |
102 | static inline int kvm_arm_pmu_v3_has_attr(struct kvm_vcpu *vcpu, | |
103 | struct kvm_device_attr *attr) | |
104 | { | |
105 | return -ENXIO; | |
106 | } | |
a2befacf CD |
107 | static inline int kvm_arm_pmu_v3_enable(struct kvm_vcpu *vcpu) |
108 | { | |
109 | return 0; | |
110 | } | |
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111 | #endif |
112 | ||
113 | #endif |