diff options
author | Andre Przywara <andre.przywara@arm.com> | 2015-12-22 00:52:33 +0000 |
---|---|---|
committer | Christoffer Dall <christoffer.dall@linaro.org> | 2016-05-20 15:40:09 +0200 |
commit | 568e8c901eaa62004640cad8b9773819f27461a0 (patch) | |
tree | 910e2d67765897df1ca30ccff4eb2bc9d1d5ad96 /virt | |
parent | 03f0c94c73b9d7d55e057e4035cf3127ac44d41e (diff) | |
download | linux-568e8c901eaa62004640cad8b9773819f27461a0.tar.bz2 |
KVM: arm/arm64: vgic-new: implement mapped IRQ handling
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>
Diffstat (limited to 'virt')
-rw-r--r-- | virt/kvm/arm/vgic/vgic.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/virt/kvm/arm/vgic/vgic.c b/virt/kvm/arm/vgic/vgic.c index 331885528ead..69b61abefa19 100644 --- a/virt/kvm/arm/vgic/vgic.c +++ b/virt/kvm/arm/vgic/vgic.c @@ -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; +} |