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Diffstat (limited to 'kernel/include/kvm/arm_vgic.h')
-rw-r--r--kernel/include/kvm/arm_vgic.h61
1 files changed, 40 insertions, 21 deletions
diff --git a/kernel/include/kvm/arm_vgic.h b/kernel/include/kvm/arm_vgic.h
index 133ea00aa..d2f41477f 100644
--- a/kernel/include/kvm/arm_vgic.h
+++ b/kernel/include/kvm/arm_vgic.h
@@ -35,11 +35,7 @@
#define VGIC_V3_MAX_LRS 16
#define VGIC_MAX_IRQS 1024
#define VGIC_V2_MAX_CPUS 8
-
-/* Sanity checks... */
-#if (KVM_MAX_VCPUS > 255)
-#error Too many KVM VCPUs, the VGIC only supports up to 255 VCPUs for now
-#endif
+#define VGIC_V3_MAX_CPUS 255
#if (VGIC_NR_IRQS_LEGACY & 31)
#error "VGIC_NR_IRQS must be a multiple of 32"
@@ -95,11 +91,15 @@ enum vgic_type {
#define LR_STATE_ACTIVE (1 << 1)
#define LR_STATE_MASK (3 << 0)
#define LR_EOI_INT (1 << 2)
+#define LR_HW (1 << 3)
struct vgic_lr {
- u16 irq;
- u8 source;
- u8 state;
+ unsigned irq:10;
+ union {
+ unsigned hwirq:10;
+ unsigned source:3;
+ };
+ unsigned state:4;
};
struct vgic_vmcr {
@@ -112,7 +112,6 @@ struct vgic_vmcr {
struct vgic_ops {
struct vgic_lr (*get_lr)(const struct kvm_vcpu *, int);
void (*set_lr)(struct kvm_vcpu *, int, struct vgic_lr);
- void (*sync_lr_elrsr)(struct kvm_vcpu *, int, struct vgic_lr);
u64 (*get_elrsr)(const struct kvm_vcpu *vcpu);
u64 (*get_eisr)(const struct kvm_vcpu *vcpu);
void (*clear_eisr)(struct kvm_vcpu *vcpu);
@@ -155,6 +154,18 @@ struct vgic_io_device {
struct kvm_io_device dev;
};
+struct irq_phys_map {
+ u32 virt_irq;
+ u32 phys_irq;
+ u32 irq;
+};
+
+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;
@@ -252,6 +263,10 @@ 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 {
@@ -265,7 +280,7 @@ struct vgic_v2_cpu_if {
};
struct vgic_v3_cpu_if {
-#ifdef CONFIG_ARM_GIC_V3
+#ifdef CONFIG_KVM_ARM_VGIC_V3
u32 vgic_hcr;
u32 vgic_vmcr;
u32 vgic_sre; /* Restored only, change ignored */
@@ -279,22 +294,16 @@ struct vgic_v3_cpu_if {
};
struct vgic_cpu {
- /* per IRQ to LR mapping */
- u8 *vgic_irq_lr_map;
-
/* Pending/active/both interrupts on this VCPU */
- DECLARE_BITMAP( pending_percpu, VGIC_NR_PRIVATE_IRQS);
- DECLARE_BITMAP( active_percpu, VGIC_NR_PRIVATE_IRQS);
- DECLARE_BITMAP( pend_act_percpu, VGIC_NR_PRIVATE_IRQS);
+ DECLARE_BITMAP(pending_percpu, VGIC_NR_PRIVATE_IRQS);
+ DECLARE_BITMAP(active_percpu, VGIC_NR_PRIVATE_IRQS);
+ DECLARE_BITMAP(pend_act_percpu, VGIC_NR_PRIVATE_IRQS);
/* Pending/active/both shared interrupts, dynamically sized */
unsigned long *pending_shared;
unsigned long *active_shared;
unsigned long *pend_act_shared;
- /* Bitmap of used/free list registers */
- DECLARE_BITMAP( lr_used, VGIC_V2_MAX_LRS);
-
/* Number of list registers on this CPU */
int nr_lr;
@@ -303,6 +312,9 @@ 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
@@ -317,16 +329,23 @@ 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);
int kvm_vgic_inject_irq(struct kvm *kvm, int cpuid, unsigned int irq_num,
bool level);
+int kvm_vgic_inject_mapped_irq(struct kvm *kvm, int cpuid,
+ struct irq_phys_map *map, bool level);
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);
+bool kvm_vgic_map_is_active(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))
@@ -335,7 +354,7 @@ int kvm_vgic_vcpu_active_irq(struct kvm_vcpu *vcpu);
int vgic_v2_probe(struct device_node *vgic_node,
const struct vgic_ops **ops,
const struct vgic_params **params);
-#ifdef CONFIG_ARM_GIC_V3
+#ifdef CONFIG_KVM_ARM_VGIC_V3
int vgic_v3_probe(struct device_node *vgic_node,
const struct vgic_ops **ops,
const struct vgic_params **params);