/*
|
* Copyright (C) 2012 ARM Ltd.
|
* Author: Marc Zyngier <marc.zyngier@arm.com>
|
*
|
* 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, write to the Free Software
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
*/
|
|
#ifndef __ASM_ARM_KVM_ARCH_TIMER_H
|
#define __ASM_ARM_KVM_ARCH_TIMER_H
|
|
#include <linux/clocksource.h>
|
#include <linux/hrtimer.h>
|
#include <linux/workqueue.h>
|
|
struct arch_timer_context {
|
/* Registers: control register, timer value */
|
u32 cnt_ctl;
|
u64 cnt_cval;
|
|
/* Timer IRQ */
|
struct kvm_irq_level irq;
|
|
/*
|
* We have multiple paths which can save/restore the timer state
|
* onto the hardware, so we need some way of keeping track of
|
* where the latest state is.
|
*
|
* loaded == true: State is loaded on the hardware registers.
|
* loaded == false: State is stored in memory.
|
*/
|
bool loaded;
|
|
/* Virtual offset */
|
u64 cntvoff;
|
};
|
|
struct arch_timer_cpu {
|
struct arch_timer_context vtimer;
|
struct arch_timer_context ptimer;
|
|
/* Background timer used when the guest is not running */
|
struct hrtimer bg_timer;
|
|
/* Work queued with the above timer expires */
|
struct work_struct expired;
|
|
/* Physical timer emulation */
|
struct hrtimer phys_timer;
|
|
/* Is the timer enabled */
|
bool enabled;
|
};
|
|
int kvm_timer_hyp_init(bool);
|
int kvm_timer_enable(struct kvm_vcpu *vcpu);
|
int kvm_timer_vcpu_reset(struct kvm_vcpu *vcpu);
|
void kvm_timer_vcpu_init(struct kvm_vcpu *vcpu);
|
void kvm_timer_sync_hwstate(struct kvm_vcpu *vcpu);
|
bool kvm_timer_should_notify_user(struct kvm_vcpu *vcpu);
|
void kvm_timer_update_run(struct kvm_vcpu *vcpu);
|
void kvm_timer_vcpu_terminate(struct kvm_vcpu *vcpu);
|
|
u64 kvm_arm_timer_get_reg(struct kvm_vcpu *, u64 regid);
|
int kvm_arm_timer_set_reg(struct kvm_vcpu *, u64 regid, u64 value);
|
|
int kvm_arm_timer_set_attr(struct kvm_vcpu *vcpu, struct kvm_device_attr *attr);
|
int kvm_arm_timer_get_attr(struct kvm_vcpu *vcpu, struct kvm_device_attr *attr);
|
int kvm_arm_timer_has_attr(struct kvm_vcpu *vcpu, struct kvm_device_attr *attr);
|
|
bool kvm_timer_is_pending(struct kvm_vcpu *vcpu);
|
|
void kvm_timer_schedule(struct kvm_vcpu *vcpu);
|
void kvm_timer_unschedule(struct kvm_vcpu *vcpu);
|
|
u64 kvm_phys_timer_read(void);
|
|
void kvm_timer_vcpu_load(struct kvm_vcpu *vcpu);
|
void kvm_timer_vcpu_put(struct kvm_vcpu *vcpu);
|
|
void kvm_timer_init_vhe(void);
|
|
bool kvm_arch_timer_get_input_level(int vintid);
|
|
#define vcpu_vtimer(v) (&(v)->arch.timer_cpu.vtimer)
|
#define vcpu_ptimer(v) (&(v)->arch.timer_cpu.ptimer)
|
|
#endif
|
