| /* |
| * 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 |
| |
| #include <linux/perf_event.h> |
| #include <asm/perf_event.h> |
| |
| #define ARMV8_PMU_CYCLE_IDX (ARMV8_PMU_MAX_COUNTERS - 1) |
| |
| #ifdef CONFIG_KVM_ARM_PMU |
| |
| 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; |
| bool created; |
| bool irq_level; |
| }; |
| |
| #define kvm_arm_pmu_v3_ready(v) ((v)->arch.pmu.ready) |
| #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); |
| void kvm_pmu_vcpu_reset(struct kvm_vcpu *vcpu); |
| void kvm_pmu_vcpu_destroy(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_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); |
| bool kvm_arm_support_pmu_v3(void); |
| 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); |
| #else |
| struct kvm_pmu { |
| }; |
| |
| #define kvm_arm_pmu_v3_ready(v) (false) |
| #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_reset(struct kvm_vcpu *vcpu) {} |
| static inline void kvm_pmu_vcpu_destroy(struct kvm_vcpu *vcpu) {} |
| 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_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 bool kvm_arm_support_pmu_v3(void) { return false; } |
| 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; |
| } |
| #endif |
| |
| #endif |