2 * Copyright (C) 2012 ARM Ltd.
3 * Author: Marc Zyngier <marc.zyngier@arm.com>
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.
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.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 #ifndef __ASM_ARM_KVM_ARCH_TIMER_H
20 #define __ASM_ARM_KVM_ARCH_TIMER_H
22 #include <linux/clocksource.h>
23 #include <linux/hrtimer.h>
24 #include <linux/workqueue.h>
26 struct arch_timer_kvm {
31 struct arch_timer_cpu {
32 /* Registers: control register, timer value */
33 u32 cntv_ctl; /* Saved/restored */
34 u64 cntv_cval; /* Saved/restored */
37 * Anything that is not used directly from assembly code goes
41 /* Background timer used when the guest is not running */
44 /* Work queued with the above timer expires */
45 struct work_struct expired;
47 /* Background timer active */
51 struct kvm_irq_level irq;
53 /* Active IRQ state caching */
54 bool active_cleared_last;
56 /* Is the timer enabled */
60 int kvm_timer_hyp_init(void);
61 int kvm_timer_enable(struct kvm_vcpu *vcpu);
62 void kvm_timer_init(struct kvm *kvm);
63 int kvm_timer_vcpu_reset(struct kvm_vcpu *vcpu,
64 const struct kvm_irq_level *irq);
65 void kvm_timer_vcpu_init(struct kvm_vcpu *vcpu);
66 void kvm_timer_flush_hwstate(struct kvm_vcpu *vcpu);
67 void kvm_timer_sync_hwstate(struct kvm_vcpu *vcpu);
68 void kvm_timer_vcpu_terminate(struct kvm_vcpu *vcpu);
70 u64 kvm_arm_timer_get_reg(struct kvm_vcpu *, u64 regid);
71 int kvm_arm_timer_set_reg(struct kvm_vcpu *, u64 regid, u64 value);
73 bool kvm_timer_should_fire(struct kvm_vcpu *vcpu);
74 void kvm_timer_schedule(struct kvm_vcpu *vcpu);
75 void kvm_timer_unschedule(struct kvm_vcpu *vcpu);
77 void kvm_timer_vcpu_put(struct kvm_vcpu *vcpu);