126 строки
4.1 KiB
C
126 строки
4.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Copyright (C) 2015 Linaro Ltd.
|
|
* Author: Shannon Zhao <shannon.zhao@linaro.org>
|
|
*/
|
|
|
|
#ifndef __ASM_ARM_KVM_PMU_H
|
|
#define __ASM_ARM_KVM_PMU_H
|
|
|
|
#include <linux/perf_event.h>
|
|
#include <asm/perf_event.h>
|
|
|
|
#define ARMV8_PMU_CYCLE_IDX (ARMV8_PMU_MAX_COUNTERS - 1)
|
|
#define ARMV8_PMU_MAX_COUNTER_PAIRS ((ARMV8_PMU_MAX_COUNTERS + 1) >> 1)
|
|
|
|
DECLARE_STATIC_KEY_FALSE(kvm_arm_pmu_available);
|
|
|
|
static __always_inline bool kvm_arm_support_pmu_v3(void)
|
|
{
|
|
return static_branch_likely(&kvm_arm_pmu_available);
|
|
}
|
|
|
|
#ifdef CONFIG_HW_PERF_EVENTS
|
|
|
|
struct kvm_pmc {
|
|
u8 idx; /* index into the pmu->pmc array */
|
|
struct perf_event *perf_event;
|
|
};
|
|
|
|
struct kvm_pmu {
|
|
int irq_num;
|
|
struct kvm_pmc pmc[ARMV8_PMU_MAX_COUNTERS];
|
|
DECLARE_BITMAP(chained, ARMV8_PMU_MAX_COUNTER_PAIRS);
|
|
bool created;
|
|
bool irq_level;
|
|
struct irq_work overflow_work;
|
|
};
|
|
|
|
#define kvm_arm_pmu_irq_initialized(v) ((v)->arch.pmu.irq_num >= VGIC_NR_SGIS)
|
|
u64 kvm_pmu_get_counter_value(struct kvm_vcpu *vcpu, u64 select_idx);
|
|
void kvm_pmu_set_counter_value(struct kvm_vcpu *vcpu, u64 select_idx, u64 val);
|
|
u64 kvm_pmu_valid_counter_mask(struct kvm_vcpu *vcpu);
|
|
u64 kvm_pmu_get_pmceid(struct kvm_vcpu *vcpu, bool pmceid1);
|
|
void kvm_pmu_vcpu_init(struct kvm_vcpu *vcpu);
|
|
void kvm_pmu_vcpu_reset(struct kvm_vcpu *vcpu);
|
|
void kvm_pmu_vcpu_destroy(struct kvm_vcpu *vcpu);
|
|
void kvm_pmu_disable_counter_mask(struct kvm_vcpu *vcpu, u64 val);
|
|
void kvm_pmu_enable_counter_mask(struct kvm_vcpu *vcpu, u64 val);
|
|
void kvm_pmu_flush_hwstate(struct kvm_vcpu *vcpu);
|
|
void kvm_pmu_sync_hwstate(struct kvm_vcpu *vcpu);
|
|
bool kvm_pmu_should_notify_user(struct kvm_vcpu *vcpu);
|
|
void kvm_pmu_update_run(struct kvm_vcpu *vcpu);
|
|
void kvm_pmu_software_increment(struct kvm_vcpu *vcpu, u64 val);
|
|
void kvm_pmu_handle_pmcr(struct kvm_vcpu *vcpu, u64 val);
|
|
void kvm_pmu_set_counter_event_type(struct kvm_vcpu *vcpu, u64 data,
|
|
u64 select_idx);
|
|
int kvm_arm_pmu_v3_set_attr(struct kvm_vcpu *vcpu,
|
|
struct kvm_device_attr *attr);
|
|
int kvm_arm_pmu_v3_get_attr(struct kvm_vcpu *vcpu,
|
|
struct kvm_device_attr *attr);
|
|
int kvm_arm_pmu_v3_has_attr(struct kvm_vcpu *vcpu,
|
|
struct kvm_device_attr *attr);
|
|
int kvm_arm_pmu_v3_enable(struct kvm_vcpu *vcpu);
|
|
int kvm_pmu_probe_pmuver(void);
|
|
#else
|
|
struct kvm_pmu {
|
|
};
|
|
|
|
#define kvm_arm_pmu_irq_initialized(v) (false)
|
|
static inline u64 kvm_pmu_get_counter_value(struct kvm_vcpu *vcpu,
|
|
u64 select_idx)
|
|
{
|
|
return 0;
|
|
}
|
|
static inline void kvm_pmu_set_counter_value(struct kvm_vcpu *vcpu,
|
|
u64 select_idx, u64 val) {}
|
|
static inline u64 kvm_pmu_valid_counter_mask(struct kvm_vcpu *vcpu)
|
|
{
|
|
return 0;
|
|
}
|
|
static inline void kvm_pmu_vcpu_init(struct kvm_vcpu *vcpu) {}
|
|
static inline void kvm_pmu_vcpu_reset(struct kvm_vcpu *vcpu) {}
|
|
static inline void kvm_pmu_vcpu_destroy(struct kvm_vcpu *vcpu) {}
|
|
static inline void kvm_pmu_disable_counter_mask(struct kvm_vcpu *vcpu, u64 val) {}
|
|
static inline void kvm_pmu_enable_counter_mask(struct kvm_vcpu *vcpu, u64 val) {}
|
|
static inline void kvm_pmu_flush_hwstate(struct kvm_vcpu *vcpu) {}
|
|
static inline void kvm_pmu_sync_hwstate(struct kvm_vcpu *vcpu) {}
|
|
static inline bool kvm_pmu_should_notify_user(struct kvm_vcpu *vcpu)
|
|
{
|
|
return false;
|
|
}
|
|
static inline void kvm_pmu_update_run(struct kvm_vcpu *vcpu) {}
|
|
static inline void kvm_pmu_software_increment(struct kvm_vcpu *vcpu, u64 val) {}
|
|
static inline void kvm_pmu_handle_pmcr(struct kvm_vcpu *vcpu, u64 val) {}
|
|
static inline void kvm_pmu_set_counter_event_type(struct kvm_vcpu *vcpu,
|
|
u64 data, u64 select_idx) {}
|
|
static inline int kvm_arm_pmu_v3_set_attr(struct kvm_vcpu *vcpu,
|
|
struct kvm_device_attr *attr)
|
|
{
|
|
return -ENXIO;
|
|
}
|
|
static inline int kvm_arm_pmu_v3_get_attr(struct kvm_vcpu *vcpu,
|
|
struct kvm_device_attr *attr)
|
|
{
|
|
return -ENXIO;
|
|
}
|
|
static inline int kvm_arm_pmu_v3_has_attr(struct kvm_vcpu *vcpu,
|
|
struct kvm_device_attr *attr)
|
|
{
|
|
return -ENXIO;
|
|
}
|
|
static inline int kvm_arm_pmu_v3_enable(struct kvm_vcpu *vcpu)
|
|
{
|
|
return 0;
|
|
}
|
|
static inline u64 kvm_pmu_get_pmceid(struct kvm_vcpu *vcpu, bool pmceid1)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int kvm_pmu_probe_pmuver(void) { return 0xf; }
|
|
|
|
#endif
|
|
|
|
#endif
|