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109 lines
2.9 KiB
109 lines
2.9 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* |
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* Copyright (C) 2012 ARM Ltd. |
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* Author: Marc Zyngier <[email protected]> |
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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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enum kvm_arch_timers { |
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TIMER_PTIMER, |
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TIMER_VTIMER, |
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NR_KVM_TIMERS |
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}; |
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enum kvm_arch_timer_regs { |
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TIMER_REG_CNT, |
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TIMER_REG_CVAL, |
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TIMER_REG_TVAL, |
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TIMER_REG_CTL, |
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}; |
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struct arch_timer_context { |
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struct kvm_vcpu *vcpu; |
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/* Timer IRQ */ |
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struct kvm_irq_level irq; |
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/* Emulated Timer (may be unused) */ |
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struct hrtimer hrtimer; |
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/* |
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* We have multiple paths which can save/restore the timer state onto |
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* the hardware, so we need some way of keeping track of where the |
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* latest state is. |
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*/ |
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bool loaded; |
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/* Duplicated state from arch_timer.c for convenience */ |
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u32 host_timer_irq; |
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u32 host_timer_irq_flags; |
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}; |
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struct timer_map { |
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struct arch_timer_context *direct_vtimer; |
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struct arch_timer_context *direct_ptimer; |
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struct arch_timer_context *emul_ptimer; |
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}; |
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struct arch_timer_cpu { |
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struct arch_timer_context timers[NR_KVM_TIMERS]; |
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/* Background timer used when the guest is not running */ |
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struct hrtimer bg_timer; |
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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(bool); |
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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_sync_user(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_is_pending(struct kvm_vcpu *vcpu); |
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u64 kvm_phys_timer_read(void); |
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void kvm_timer_vcpu_load(struct kvm_vcpu *vcpu); |
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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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bool kvm_arch_timer_get_input_level(int vintid); |
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#define vcpu_timer(v) (&(v)->arch.timer_cpu) |
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#define vcpu_get_timer(v,t) (&vcpu_timer(v)->timers[(t)]) |
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#define vcpu_vtimer(v) (&(v)->arch.timer_cpu.timers[TIMER_VTIMER]) |
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#define vcpu_ptimer(v) (&(v)->arch.timer_cpu.timers[TIMER_PTIMER]) |
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#define arch_timer_ctx_index(ctx) ((ctx) - vcpu_timer((ctx)->vcpu)->timers) |
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u64 kvm_arm_timer_read_sysreg(struct kvm_vcpu *vcpu, |
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enum kvm_arch_timers tmr, |
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enum kvm_arch_timer_regs treg); |
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void kvm_arm_timer_write_sysreg(struct kvm_vcpu *vcpu, |
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enum kvm_arch_timers tmr, |
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enum kvm_arch_timer_regs treg, |
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u64 val); |
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/* Needed for tracing */ |
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u32 timer_get_ctl(struct arch_timer_context *ctxt); |
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u64 timer_get_cval(struct arch_timer_context *ctxt); |
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#endif
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