KVM: arm/arm64: vgic: Allow dynamic mapping of physical/virtual interrupts

[deliverable/linux.git] / include / kvm / arm_vgic.h

diff --git a/include/kvm/arm_vgic.h b/include/kvm/arm_vgic.h
index a881e398d3e571a32850e6d515497dbea5c54355..c0e6354bcd06aa6791c2da32161b00694349196a 100644 (file)
--- 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))