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review.trustedfirmware.org / hafnium / third_party / linux / 0f672f6c0b52b7b0700b0915c72b540721af4465 / . / include / kvm / arm_pmu.h
blob: 6db030439e29c287ece08ab5353080fcfe0de39f [file] [log] [blame]
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]1/* SPDX-License-Identifier: GPL-2.0-only */
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]2/*
3 * Copyright (C) 2015 Linaro Ltd.
4 * Author: Shannon Zhao <shannon.zhao@linaro.org>
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]5 */
6
7#ifndef __ASM_ARM_KVM_PMU_H
8#define __ASM_ARM_KVM_PMU_H
9
10#include <linux/perf_event.h>
11#include <asm/perf_event.h>
12
13#define ARMV8_PMU_CYCLE_IDX (ARMV8_PMU_MAX_COUNTERS - 1)
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]14#define ARMV8_PMU_MAX_COUNTER_PAIRS ((ARMV8_PMU_MAX_COUNTERS + 1) >> 1)
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]15
16#ifdef CONFIG_KVM_ARM_PMU
17
18struct kvm_pmc {
19 u8 idx; /* index into the pmu->pmc array */
20 struct perf_event *perf_event;
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]21};
22
23struct kvm_pmu {
24 int irq_num;
25 struct kvm_pmc pmc[ARMV8_PMU_MAX_COUNTERS];
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]26 DECLARE_BITMAP(chained, ARMV8_PMU_MAX_COUNTER_PAIRS);
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]27 bool ready;
28 bool created;
29 bool irq_level;
30};
31
32#define kvm_arm_pmu_v3_ready(v) ((v)->arch.pmu.ready)
33#define kvm_arm_pmu_irq_initialized(v) ((v)->arch.pmu.irq_num >= VGIC_NR_SGIS)
34u64 kvm_pmu_get_counter_value(struct kvm_vcpu *vcpu, u64 select_idx);
35void kvm_pmu_set_counter_value(struct kvm_vcpu *vcpu, u64 select_idx, u64 val);
36u64 kvm_pmu_valid_counter_mask(struct kvm_vcpu *vcpu);
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]37void kvm_pmu_vcpu_init(struct kvm_vcpu *vcpu);
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]38void kvm_pmu_vcpu_reset(struct kvm_vcpu *vcpu);
39void kvm_pmu_vcpu_destroy(struct kvm_vcpu *vcpu);
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]40void kvm_pmu_disable_counter_mask(struct kvm_vcpu *vcpu, u64 val);
41void kvm_pmu_enable_counter_mask(struct kvm_vcpu *vcpu, u64 val);
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]42void kvm_pmu_flush_hwstate(struct kvm_vcpu *vcpu);
43void kvm_pmu_sync_hwstate(struct kvm_vcpu *vcpu);
44bool kvm_pmu_should_notify_user(struct kvm_vcpu *vcpu);
45void kvm_pmu_update_run(struct kvm_vcpu *vcpu);
46void kvm_pmu_software_increment(struct kvm_vcpu *vcpu, u64 val);
47void kvm_pmu_handle_pmcr(struct kvm_vcpu *vcpu, u64 val);
48void kvm_pmu_set_counter_event_type(struct kvm_vcpu *vcpu, u64 data,
49 u64 select_idx);
50bool kvm_arm_support_pmu_v3(void);
51int kvm_arm_pmu_v3_set_attr(struct kvm_vcpu *vcpu,
52 struct kvm_device_attr *attr);
53int kvm_arm_pmu_v3_get_attr(struct kvm_vcpu *vcpu,
54 struct kvm_device_attr *attr);
55int kvm_arm_pmu_v3_has_attr(struct kvm_vcpu *vcpu,
56 struct kvm_device_attr *attr);
57int kvm_arm_pmu_v3_enable(struct kvm_vcpu *vcpu);
58#else
59struct kvm_pmu {
60};
61
62#define kvm_arm_pmu_v3_ready(v) (false)
63#define kvm_arm_pmu_irq_initialized(v) (false)
64static inline u64 kvm_pmu_get_counter_value(struct kvm_vcpu *vcpu,
65 u64 select_idx)
66{
67 return 0;
68}
69static inline void kvm_pmu_set_counter_value(struct kvm_vcpu *vcpu,
70 u64 select_idx, u64 val) {}
71static inline u64 kvm_pmu_valid_counter_mask(struct kvm_vcpu *vcpu)
72{
73 return 0;
74}
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]75static inline void kvm_pmu_vcpu_init(struct kvm_vcpu *vcpu) {}
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]76static inline void kvm_pmu_vcpu_reset(struct kvm_vcpu *vcpu) {}
77static inline void kvm_pmu_vcpu_destroy(struct kvm_vcpu *vcpu) {}
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]78static inline void kvm_pmu_disable_counter_mask(struct kvm_vcpu *vcpu, u64 val) {}
79static inline void kvm_pmu_enable_counter_mask(struct kvm_vcpu *vcpu, u64 val) {}
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]80static inline void kvm_pmu_flush_hwstate(struct kvm_vcpu *vcpu) {}
81static inline void kvm_pmu_sync_hwstate(struct kvm_vcpu *vcpu) {}
82static inline bool kvm_pmu_should_notify_user(struct kvm_vcpu *vcpu)
83{
84 return false;
85}
86static inline void kvm_pmu_update_run(struct kvm_vcpu *vcpu) {}
87static inline void kvm_pmu_software_increment(struct kvm_vcpu *vcpu, u64 val) {}
88static inline void kvm_pmu_handle_pmcr(struct kvm_vcpu *vcpu, u64 val) {}
89static inline void kvm_pmu_set_counter_event_type(struct kvm_vcpu *vcpu,
90 u64 data, u64 select_idx) {}
91static inline bool kvm_arm_support_pmu_v3(void) { return false; }
92static inline int kvm_arm_pmu_v3_set_attr(struct kvm_vcpu *vcpu,
93 struct kvm_device_attr *attr)
94{
95 return -ENXIO;
96}
97static inline int kvm_arm_pmu_v3_get_attr(struct kvm_vcpu *vcpu,
98 struct kvm_device_attr *attr)
99{
100 return -ENXIO;
101}
102static inline int kvm_arm_pmu_v3_has_attr(struct kvm_vcpu *vcpu,
103 struct kvm_device_attr *attr)
104{
105 return -ENXIO;
106}
107static inline int kvm_arm_pmu_v3_enable(struct kvm_vcpu *vcpu)
108{
109 return 0;
110}
111#endif
112
113#endif