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87 lines
2.7 KiB
87 lines
2.7 KiB
/* |
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* Copyright (C) 2012 ARM Ltd. |
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* Author: Marc Zyngier <marc.zyngier@arm.com> |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License version 2 as |
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* published by the Free Software Foundation. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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#ifndef __ASM_ARM_KVM_ARCH_TIMER_H |
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#define __ASM_ARM_KVM_ARCH_TIMER_H |
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#include <linux/clocksource.h> |
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#include <linux/hrtimer.h> |
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#include <linux/workqueue.h> |
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struct arch_timer_context { |
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/* Registers: control register, timer value */ |
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u32 cnt_ctl; |
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u64 cnt_cval; |
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/* Timer IRQ */ |
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struct kvm_irq_level irq; |
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/* Active IRQ state caching */ |
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bool active_cleared_last; |
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/* Virtual offset */ |
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u64 cntvoff; |
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}; |
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struct arch_timer_cpu { |
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struct arch_timer_context vtimer; |
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struct arch_timer_context ptimer; |
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/* Background timer used when the guest is not running */ |
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struct hrtimer timer; |
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/* Work queued with the above timer expires */ |
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struct work_struct expired; |
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/* Background timer active */ |
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bool armed; |
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/* Is the timer enabled */ |
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bool enabled; |
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}; |
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int kvm_timer_hyp_init(void); |
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int kvm_timer_enable(struct kvm_vcpu *vcpu); |
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int kvm_timer_vcpu_reset(struct kvm_vcpu *vcpu); |
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void kvm_timer_vcpu_init(struct kvm_vcpu *vcpu); |
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void kvm_timer_flush_hwstate(struct kvm_vcpu *vcpu); |
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void kvm_timer_sync_hwstate(struct kvm_vcpu *vcpu); |
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bool kvm_timer_should_notify_user(struct kvm_vcpu *vcpu); |
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void kvm_timer_update_run(struct kvm_vcpu *vcpu); |
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void kvm_timer_vcpu_terminate(struct kvm_vcpu *vcpu); |
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u64 kvm_arm_timer_get_reg(struct kvm_vcpu *, u64 regid); |
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int kvm_arm_timer_set_reg(struct kvm_vcpu *, u64 regid, u64 value); |
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int kvm_arm_timer_set_attr(struct kvm_vcpu *vcpu, struct kvm_device_attr *attr); |
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int kvm_arm_timer_get_attr(struct kvm_vcpu *vcpu, struct kvm_device_attr *attr); |
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int kvm_arm_timer_has_attr(struct kvm_vcpu *vcpu, struct kvm_device_attr *attr); |
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bool kvm_timer_should_fire(struct arch_timer_context *timer_ctx); |
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void kvm_timer_schedule(struct kvm_vcpu *vcpu); |
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void kvm_timer_unschedule(struct kvm_vcpu *vcpu); |
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u64 kvm_phys_timer_read(void); |
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void kvm_timer_vcpu_put(struct kvm_vcpu *vcpu); |
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void kvm_timer_init_vhe(void); |
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#define vcpu_vtimer(v) (&(v)->arch.timer_cpu.vtimer) |
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#define vcpu_ptimer(v) (&(v)->arch.timer_cpu.ptimer) |
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#endif
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