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KVM: arm/arm64: vgic-new: implement mapped IRQ handling

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We now store the mapped hardware IRQ number in our struct, so we
don't need the irq_phys_map for the new VGIC.
Implement the hardware IRQ mapping on top of the reworked arch
timer interface.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
This commit is contained in:
Andre Przywara 2015-12-22 00:52:33 +00:00 committed by Christoffer Dall
parent 03f0c94c73
commit 568e8c901e
2 changed files with 58 additions and 0 deletions
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5
include/kvm/vgic/vgic.h
View File

@ -206,6 +206,11 @@ int kvm_vgic_hyp_init(void);
int kvm_vgic_inject_irq(struct kvm *kvm, int cpuid, unsigned int intid,
bool level);
int kvm_vgic_inject_mapped_irq(struct kvm *kvm, int cpuid, unsigned int intid,
bool level);
int kvm_vgic_map_phys_irq(struct kvm_vcpu *vcpu, u32 virt_irq, u32 phys_irq);
int kvm_vgic_unmap_phys_irq(struct kvm_vcpu *vcpu, unsigned int virt_irq);
bool kvm_vgic_map_is_active(struct kvm_vcpu *vcpu, unsigned int virt_irq);
int kvm_vgic_vcpu_pending_irq(struct kvm_vcpu *vcpu);

53
virt/kvm/arm/vgic/vgic.c
View File

@ -312,6 +312,47 @@ int kvm_vgic_inject_irq(struct kvm *kvm, int cpuid, unsigned int intid,
return vgic_update_irq_pending(kvm, cpuid, intid, level, false);
}
int kvm_vgic_inject_mapped_irq(struct kvm *kvm, int cpuid, unsigned int intid,
bool level)
{
return vgic_update_irq_pending(kvm, cpuid, intid, level, true);
}
int kvm_vgic_map_phys_irq(struct kvm_vcpu *vcpu, u32 virt_irq, u32 phys_irq)
{
struct vgic_irq *irq = vgic_get_irq(vcpu->kvm, vcpu, virt_irq);
BUG_ON(!irq);
spin_lock(&irq->irq_lock);
irq->hw = true;
irq->hwintid = phys_irq;
spin_unlock(&irq->irq_lock);
return 0;
}
int kvm_vgic_unmap_phys_irq(struct kvm_vcpu *vcpu, unsigned int virt_irq)
{
struct vgic_irq *irq = vgic_get_irq(vcpu->kvm, vcpu, virt_irq);
BUG_ON(!irq);
if (!vgic_initialized(vcpu->kvm))
return -EAGAIN;
spin_lock(&irq->irq_lock);
irq->hw = false;
irq->hwintid = 0;
spin_unlock(&irq->irq_lock);
return 0;
}
/**
* vgic_prune_ap_list - Remove non-relevant interrupts from the list
*
@ -564,3 +605,15 @@ void vgic_kick_vcpus(struct kvm *kvm)
kvm_vcpu_kick(vcpu);
}
}
bool kvm_vgic_map_is_active(struct kvm_vcpu *vcpu, unsigned int virt_irq)
{
struct vgic_irq *irq = vgic_get_irq(vcpu->kvm, vcpu, virt_irq);
bool map_is_active;
spin_lock(&irq->irq_lock);
map_is_active = irq->hw && irq->active;
spin_unlock(&irq->irq_lock);
return map_is_active;
}