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@xxxxxxx>
---
Changelog RFC..v1:
- adapt to new arch_timer mapped IRQ interface
- implement inject_mapped_irq() as a macro (since it is identical to
the "un-mapped" IRQ implementation)
Changelog v1 .. v2:
- replace inject_mapped_irq() macro with a separate implementation,
which only allows mapped IRQs to be injected via this interface
include/kvm/vgic/vgic.h | 5 +++++
virt/kvm/arm/vgic/vgic.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 55 insertions(+)
diff --git a/include/kvm/vgic/vgic.h b/include/kvm/vgic/vgic.h
index 07c3011..64aca0c 100644
--- a/include/kvm/vgic/vgic.h
+++ b/include/kvm/vgic/vgic.h
@@ -213,6 +213,11 @@ 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);
diff --git a/virt/kvm/arm/vgic/vgic.c b/virt/kvm/arm/vgic/vgic.c
index 970e19a..5f21742 100644
--- a/virt/kvm/arm/vgic/vgic.c
+++ b/virt/kvm/arm/vgic/vgic.c
@@ -310,6 +310,44 @@ 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);
+
+ 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
*
@@ -579,3 +617,15 @@ 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;
+}
--
2.7.3
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