Gitiles
Code Review Sign In
review.shift-gmbh.com / SHIFTPHONES / mainline / linux / e15dbcdeb9f66c9e6068f94aed60cee9844b621a / . / include / kvm / arm_pmu.h
blob: 6db030439e29c287ece08ab5353080fcfe0de39f [file] [log] [blame]
Thomas Gleixnercaab2772019-06-03 07:44:50 +0200[diff] [blame]1/* SPDX-License-Identifier: GPL-2.0-only */
Shannon Zhao04fe4722015-09-11 09:38:32 +0800[diff] [blame]2/*
3 * Copyright (C) 2015 Linaro Ltd.
4 * Author: Shannon Zhao <shannon.zhao@linaro.org>
Shannon Zhao04fe4722015-09-11 09:38:32 +0800[diff] [blame]5 */
6
7#ifndef __ASM_ARM_KVM_PMU_H
8#define __ASM_ARM_KVM_PMU_H
9
Shannon Zhao04fe4722015-09-11 09:38:32 +0800[diff] [blame]10#include <linux/perf_event.h>
11#include <asm/perf_event.h>
12
Shannon Zhao051ff582015-12-08 15:29:06 +0800[diff] [blame]13#define ARMV8_PMU_CYCLE_IDX (ARMV8_PMU_MAX_COUNTERS - 1)
Andrew Murray80f393a2019-06-17 20:01:05 +0100[diff] [blame]14#define ARMV8_PMU_MAX_COUNTER_PAIRS ((ARMV8_PMU_MAX_COUNTERS + 1) >> 1)
Shannon Zhao051ff582015-12-08 15:29:06 +0800[diff] [blame]15
Sudeep Holla0efce9d2016-06-08 11:38:55 +0100[diff] [blame]16#ifdef CONFIG_KVM_ARM_PMU
17
Shannon Zhao04fe4722015-09-11 09:38:32 +0800[diff] [blame]18struct kvm_pmc {
19 u8 idx; /* index into the pmu->pmc array */
20 struct perf_event *perf_event;
Shannon Zhao04fe4722015-09-11 09:38:32 +0800[diff] [blame]21};
22
23struct kvm_pmu {
24 int irq_num;
25 struct kvm_pmc pmc[ARMV8_PMU_MAX_COUNTERS];
Andrew Murray80f393a2019-06-17 20:01:05 +0100[diff] [blame]26 DECLARE_BITMAP(chained, ARMV8_PMU_MAX_COUNTER_PAIRS);
Shannon Zhao04fe4722015-09-11 09:38:32 +0800[diff] [blame]27 bool ready;
Christoffer Dalla2befac2017-05-02 13:41:02 +0200[diff] [blame]28 bool created;
Shannon Zhaob02386e2016-02-26 19:29:19 +0800[diff] [blame]29 bool irq_level;
Shannon Zhao04fe4722015-09-11 09:38:32 +0800[diff] [blame]30};
Shannon Zhaoab946832015-06-18 16:01:53 +0800[diff] [blame]31
32#define kvm_arm_pmu_v3_ready(v) ((v)->arch.pmu.ready)
Shannon Zhaobb0c70b2016-01-11 21:35:32 +0800[diff] [blame]33#define kvm_arm_pmu_irq_initialized(v) ((v)->arch.pmu.irq_num >= VGIC_NR_SGIS)
Shannon Zhao051ff582015-12-08 15:29:06 +0800[diff] [blame]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);
Shannon Zhao96b0eeb2015-09-08 12:26:13 +0800[diff] [blame]36u64 kvm_pmu_valid_counter_mask(struct kvm_vcpu *vcpu);
Zenghui Yubca031e2019-07-18 08:15:10 +0000[diff] [blame]37void kvm_pmu_vcpu_init(struct kvm_vcpu *vcpu);
Shannon Zhao2aa36e92015-09-11 11:30:22 +0800[diff] [blame]38void kvm_pmu_vcpu_reset(struct kvm_vcpu *vcpu);
Shannon Zhao5f0a7142015-09-11 15:18:05 +0800[diff] [blame]39void kvm_pmu_vcpu_destroy(struct kvm_vcpu *vcpu);
Andrew Murray418e5ca2019-06-17 20:01:01 +0100[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);
Shannon Zhaob02386e2016-02-26 19:29:19 +0800[diff] [blame]42void kvm_pmu_flush_hwstate(struct kvm_vcpu *vcpu);
43void kvm_pmu_sync_hwstate(struct kvm_vcpu *vcpu);
Christoffer Dall3dbbdf72017-02-01 12:51:52 +0100[diff] [blame]44bool kvm_pmu_should_notify_user(struct kvm_vcpu *vcpu);
45void kvm_pmu_update_run(struct kvm_vcpu *vcpu);
Shannon Zhao7a0adc72015-09-08 15:49:39 +0800[diff] [blame]46void kvm_pmu_software_increment(struct kvm_vcpu *vcpu, u64 val);
Shannon Zhao76993732015-10-28 12:10:30 +0800[diff] [blame]47void kvm_pmu_handle_pmcr(struct kvm_vcpu *vcpu, u64 val);
Shannon Zhao7f766352015-07-03 14:27:25 +0800[diff] [blame]48void kvm_pmu_set_counter_event_type(struct kvm_vcpu *vcpu, u64 data,
49 u64 select_idx);
Shannon Zhao808e7382016-01-11 22:46:15 +0800[diff] [blame]50bool kvm_arm_support_pmu_v3(void);
Shannon Zhaobb0c70b2016-01-11 21:35:32 +0800[diff] [blame]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);
Christoffer Dalla2befac2017-05-02 13:41:02 +0200[diff] [blame]57int kvm_arm_pmu_v3_enable(struct kvm_vcpu *vcpu);
Shannon Zhao04fe4722015-09-11 09:38:32 +0800[diff] [blame]58#else
59struct kvm_pmu {
60};
Shannon Zhaoab946832015-06-18 16:01:53 +0800[diff] [blame]61
62#define kvm_arm_pmu_v3_ready(v) (false)
Shannon Zhaobb0c70b2016-01-11 21:35:32 +0800[diff] [blame]63#define kvm_arm_pmu_irq_initialized(v) (false)
Shannon Zhao051ff582015-12-08 15:29:06 +0800[diff] [blame]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) {}
Shannon Zhao96b0eeb2015-09-08 12:26:13 +0800[diff] [blame]71static inline u64 kvm_pmu_valid_counter_mask(struct kvm_vcpu *vcpu)
72{
73 return 0;
74}
Zenghui Yubca031e2019-07-18 08:15:10 +0000[diff] [blame]75static inline void kvm_pmu_vcpu_init(struct kvm_vcpu *vcpu) {}
Shannon Zhao2aa36e92015-09-11 11:30:22 +0800[diff] [blame]76static inline void kvm_pmu_vcpu_reset(struct kvm_vcpu *vcpu) {}
Shannon Zhao5f0a7142015-09-11 15:18:05 +0800[diff] [blame]77static inline void kvm_pmu_vcpu_destroy(struct kvm_vcpu *vcpu) {}
Andrew Murray418e5ca2019-06-17 20:01:01 +0100[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) {}
Shannon Zhaob02386e2016-02-26 19:29:19 +0800[diff] [blame]80static inline void kvm_pmu_flush_hwstate(struct kvm_vcpu *vcpu) {}
81static inline void kvm_pmu_sync_hwstate(struct kvm_vcpu *vcpu) {}
Christoffer Dall3dbbdf72017-02-01 12:51:52 +0100[diff] [blame]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) {}
Shannon Zhao7a0adc72015-09-08 15:49:39 +0800[diff] [blame]87static inline void kvm_pmu_software_increment(struct kvm_vcpu *vcpu, u64 val) {}
Shannon Zhao76993732015-10-28 12:10:30 +0800[diff] [blame]88static inline void kvm_pmu_handle_pmcr(struct kvm_vcpu *vcpu, u64 val) {}
Shannon Zhao7f766352015-07-03 14:27:25 +0800[diff] [blame]89static inline void kvm_pmu_set_counter_event_type(struct kvm_vcpu *vcpu,
90 u64 data, u64 select_idx) {}
Shannon Zhao808e7382016-01-11 22:46:15 +0800[diff] [blame]91static inline bool kvm_arm_support_pmu_v3(void) { return false; }
Shannon Zhaobb0c70b2016-01-11 21:35:32 +0800[diff] [blame]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}
Christoffer Dalla2befac2017-05-02 13:41:02 +0200[diff] [blame]107static inline int kvm_arm_pmu_v3_enable(struct kvm_vcpu *vcpu)
108{
109 return 0;
110}
Shannon Zhao04fe4722015-09-11 09:38:32 +0800[diff] [blame]111#endif
112
113#endif