45 lines
1.2 KiB
C
45 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Copyright (C) 2019 Western Digital Corporation or its affiliates.
|
|
*
|
|
* Authors:
|
|
* Atish Patra <atish.patra@wdc.com>
|
|
*/
|
|
|
|
#ifndef __KVM_VCPU_RISCV_TIMER_H
|
|
#define __KVM_VCPU_RISCV_TIMER_H
|
|
|
|
#include <linux/hrtimer.h>
|
|
|
|
struct kvm_guest_timer {
|
|
/* Mult & Shift values to get nanoseconds from cycles */
|
|
u32 nsec_mult;
|
|
u32 nsec_shift;
|
|
/* Time delta value */
|
|
u64 time_delta;
|
|
};
|
|
|
|
struct kvm_vcpu_timer {
|
|
/* Flag for whether init is done */
|
|
bool init_done;
|
|
/* Flag for whether timer event is configured */
|
|
bool next_set;
|
|
/* Next timer event cycles */
|
|
u64 next_cycles;
|
|
/* Underlying hrtimer instance */
|
|
struct hrtimer hrt;
|
|
};
|
|
|
|
int kvm_riscv_vcpu_timer_next_event(struct kvm_vcpu *vcpu, u64 ncycles);
|
|
int kvm_riscv_vcpu_get_reg_timer(struct kvm_vcpu *vcpu,
|
|
const struct kvm_one_reg *reg);
|
|
int kvm_riscv_vcpu_set_reg_timer(struct kvm_vcpu *vcpu,
|
|
const struct kvm_one_reg *reg);
|
|
int kvm_riscv_vcpu_timer_init(struct kvm_vcpu *vcpu);
|
|
int kvm_riscv_vcpu_timer_deinit(struct kvm_vcpu *vcpu);
|
|
int kvm_riscv_vcpu_timer_reset(struct kvm_vcpu *vcpu);
|
|
void kvm_riscv_vcpu_timer_restore(struct kvm_vcpu *vcpu);
|
|
int kvm_riscv_guest_timer_init(struct kvm *kvm);
|
|
|
|
#endif
|