[mirror_ubuntu-bionic-kernel.git] / include / kvm / arm_pmu.h

/*
 * Copyright (C) 2015 Linaro Ltd.
 * Author: Shannon Zhao <shannon.zhao@linaro.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef __ASM_ARM_KVM_PMU_H
#define __ASM_ARM_KVM_PMU_H

#ifdef CONFIG_KVM_ARM_PMU

#include <linux/perf_event.h>
#include <asm/perf_event.h>

#define ARMV8_PMU_CYCLE_IDX		(ARMV8_PMU_MAX_COUNTERS - 1)

struct kvm_pmc {
	u8 idx;	/* index into the pmu->pmc array */
	struct perf_event *perf_event;
	u64 bitmask;
};

struct kvm_pmu {
	int irq_num;
	struct kvm_pmc pmc[ARMV8_PMU_MAX_COUNTERS];
	bool ready;
};

#define kvm_arm_pmu_v3_ready(v)		((v)->arch.pmu.ready)
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);
void kvm_pmu_disable_counter(struct kvm_vcpu *vcpu, u64 val);
void kvm_pmu_enable_counter(struct kvm_vcpu *vcpu, u64 val);
void kvm_pmu_overflow_set(struct kvm_vcpu *vcpu, u64 val);
void kvm_pmu_software_increment(struct kvm_vcpu *vcpu, u64 val);
void kvm_pmu_set_counter_event_type(struct kvm_vcpu *vcpu, u64 data,
				    u64 select_idx);
#else
struct kvm_pmu {
};

#define kvm_arm_pmu_v3_ready(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_disable_counter(struct kvm_vcpu *vcpu, u64 val) {}
static inline void kvm_pmu_enable_counter(struct kvm_vcpu *vcpu, u64 val) {}
static inline void kvm_pmu_overflow_set(struct kvm_vcpu *vcpu, u64 val) {}
static inline void kvm_pmu_software_increment(struct kvm_vcpu *vcpu, u64 val) {}
static inline void kvm_pmu_set_counter_event_type(struct kvm_vcpu *vcpu,
						  u64 data, u64 select_idx) {}
#endif

#endif
Commit	Line	Data
04fe4726 SZ	1	/*
	2	* Copyright (C) 2015 Linaro Ltd.
	3	* Author: Shannon Zhao <shannon.zhao@linaro.org>
	4	*
	5	* This program is free software; you can redistribute it and/or modify
	6	* it under the terms of the GNU General Public License version 2 as
	7	* published by the Free Software Foundation.
	8	*
	9	* This program is distributed in the hope that it will be useful,
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	* GNU General Public License for more details.
	13	*
	14	* You should have received a copy of the GNU General Public License
	15	* along with this program. If not, see <http://www.gnu.org/licenses/>.
	16	*/
	17
	18	#ifndef __ASM_ARM_KVM_PMU_H
	19	#define __ASM_ARM_KVM_PMU_H
	20
	21	#ifdef CONFIG_KVM_ARM_PMU
	22
	23	#include <linux/perf_event.h>
	24	#include <asm/perf_event.h>
	25
051ff581 SZ	26	#define ARMV8_PMU_CYCLE_IDX (ARMV8_PMU_MAX_COUNTERS - 1)
051ff581 SZ	27
04fe4726 SZ	28	struct kvm_pmc {
	29	u8 idx; /* index into the pmu->pmc array */
	30	struct perf_event *perf_event;
	31	u64 bitmask;
	32	};
	33
	34	struct kvm_pmu {
	35	int irq_num;
	36	struct kvm_pmc pmc[ARMV8_PMU_MAX_COUNTERS];
	37	bool ready;
	38	};
ab946834 SZ	39
ab946834 SZ	40	#define kvm_arm_pmu_v3_ready(v) ((v)->arch.pmu.ready)
051ff581 SZ	41	u64 kvm_pmu_get_counter_value(struct kvm_vcpu *vcpu, u64 select_idx);
051ff581 SZ	42	void kvm_pmu_set_counter_value(struct kvm_vcpu *vcpu, u64 select_idx, u64 val);
96b0eebc SZ	43	u64 kvm_pmu_valid_counter_mask(struct kvm_vcpu *vcpu);
	44	void kvm_pmu_disable_counter(struct kvm_vcpu *vcpu, u64 val);
	45	void kvm_pmu_enable_counter(struct kvm_vcpu *vcpu, u64 val);
76d883c4	46	void kvm_pmu_overflow_set(struct kvm_vcpu *vcpu, u64 val);
7a0adc70	47	void kvm_pmu_software_increment(struct kvm_vcpu *vcpu, u64 val);
7f766358 SZ	48	void kvm_pmu_set_counter_event_type(struct kvm_vcpu *vcpu, u64 data,
7f766358 SZ	49	u64 select_idx);
04fe4726 SZ	50	#else
	51	struct kvm_pmu {
	52	};
ab946834 SZ	53
ab946834 SZ	54	#define kvm_arm_pmu_v3_ready(v) (false)
051ff581 SZ	55	static inline u64 kvm_pmu_get_counter_value(struct kvm_vcpu *vcpu,
	56	u64 select_idx)
	57	{
	58	return 0;
	59	}
	60	static inline void kvm_pmu_set_counter_value(struct kvm_vcpu *vcpu,
	61	u64 select_idx, u64 val) {}
96b0eebc SZ	62	static inline u64 kvm_pmu_valid_counter_mask(struct kvm_vcpu *vcpu)
	63	{
	64	return 0;
	65	}
	66	static inline void kvm_pmu_disable_counter(struct kvm_vcpu *vcpu, u64 val) {}
	67	static inline void kvm_pmu_enable_counter(struct kvm_vcpu *vcpu, u64 val) {}
76d883c4	68	static inline void kvm_pmu_overflow_set(struct kvm_vcpu *vcpu, u64 val) {}
7a0adc70	69	static inline void kvm_pmu_software_increment(struct kvm_vcpu *vcpu, u64 val) {}
7f766358 SZ	70	static inline void kvm_pmu_set_counter_event_type(struct kvm_vcpu *vcpu,
7f766358 SZ	71	u64 data, u64 select_idx) {}
04fe4726 SZ	72	#endif
	73
	74	#endif