From 6c3d63c9a26ba56e2ca63a9f68d52f77ae551d91 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Mon, 23 Jun 2014 17:37:18 +0100 Subject: KVM: arm/arm64: vgic: Allow dynamic mapping of physical/virtual interrupts In order to be able to feed physical interrupts to a guest, we need to be able to establish the virtual-physical mapping between the two worlds. The mappings are kept in a set of RCU lists, indexed by virtual interrupts. Reviewed-by: Christoffer Dall Signed-off-by: Marc Zyngier --- include/kvm/arm_vgic.h | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) (limited to 'include/kvm') diff --git a/include/kvm/arm_vgic.h b/include/kvm/arm_vgic.h index a881e39..c0e6354 100644 --- a/include/kvm/arm_vgic.h +++ b/include/kvm/arm_vgic.h @@ -159,6 +159,19 @@ struct vgic_io_device { struct kvm_io_device dev; }; +struct irq_phys_map { + u32 virt_irq; + u32 phys_irq; + u32 irq; + bool active; +}; + +struct irq_phys_map_entry { + struct list_head entry; + struct rcu_head rcu; + struct irq_phys_map map; +}; + struct vgic_dist { spinlock_t lock; bool in_kernel; @@ -256,6 +269,10 @@ struct vgic_dist { struct vgic_vm_ops vm_ops; struct vgic_io_device dist_iodev; struct vgic_io_device *redist_iodevs; + + /* Virtual irq to hwirq mapping */ + spinlock_t irq_phys_map_lock; + struct list_head irq_phys_map_list; }; struct vgic_v2_cpu_if { @@ -307,6 +324,9 @@ struct vgic_cpu { struct vgic_v2_cpu_if vgic_v2; struct vgic_v3_cpu_if vgic_v3; }; + + /* Protected by the distributor's irq_phys_map_lock */ + struct list_head irq_phys_map_list; }; #define LR_EMPTY 0xff @@ -321,8 +341,10 @@ int kvm_vgic_addr(struct kvm *kvm, unsigned long type, u64 *addr, bool write); int kvm_vgic_hyp_init(void); int kvm_vgic_map_resources(struct kvm *kvm); int kvm_vgic_get_max_vcpus(void); +void kvm_vgic_early_init(struct kvm *kvm); int kvm_vgic_create(struct kvm *kvm, u32 type); void kvm_vgic_destroy(struct kvm *kvm); +void kvm_vgic_vcpu_early_init(struct kvm_vcpu *vcpu); void kvm_vgic_vcpu_destroy(struct kvm_vcpu *vcpu); void kvm_vgic_flush_hwstate(struct kvm_vcpu *vcpu); void kvm_vgic_sync_hwstate(struct kvm_vcpu *vcpu); @@ -331,6 +353,9 @@ int kvm_vgic_inject_irq(struct kvm *kvm, int cpuid, unsigned int irq_num, void vgic_v3_dispatch_sgi(struct kvm_vcpu *vcpu, u64 reg); int kvm_vgic_vcpu_pending_irq(struct kvm_vcpu *vcpu); int kvm_vgic_vcpu_active_irq(struct kvm_vcpu *vcpu); +struct irq_phys_map *kvm_vgic_map_phys_irq(struct kvm_vcpu *vcpu, + int virt_irq, int irq); +int kvm_vgic_unmap_phys_irq(struct kvm_vcpu *vcpu, struct irq_phys_map *map); #define irqchip_in_kernel(k) (!!((k)->arch.vgic.in_kernel)) #define vgic_initialized(k) (!!((k)->arch.vgic.nr_cpus)) -- cgit v1.1