Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph...

[firefly-linux-kernel-4.4.55.git] / include / kvm / arm_vgic.h

diff --git a/include/kvm/arm_vgic.h b/include/kvm/arm_vgic.h
index ac4888dc86bcb51d802cb08d1795c60d9c4180d3..7c55dd5dd2c9faf2202692ca5f669f064c173ed4 100644 (file)
--- a/include/kvm/arm_vgic.h
+++ b/include/kvm/arm_vgic.h
@@ -33,10 +33,11 @@
 #define VGIC_V2_MAX_LRS                (1 << 6)
 #define VGIC_V3_MAX_LRS                16
 #define VGIC_MAX_IRQS          1024
+#define VGIC_V2_MAX_CPUS       8
 
 /* Sanity checks... */
-#if (KVM_MAX_VCPUS > 8)
-#error Invalid number of CPU interfaces
+#if (KVM_MAX_VCPUS > 255)
+#error Too many KVM VCPUs, the VGIC only supports up to 255 VCPUs for now
 #endif
 
 #if (VGIC_NR_IRQS_LEGACY & 31)
@@ -132,6 +133,18 @@ struct vgic_params {
        unsigned int    maint_irq;
        /* Virtual control interface base address */
        void __iomem    *vctrl_base;
+       int             max_gic_vcpus;
+       /* Only needed for the legacy KVM_CREATE_IRQCHIP */
+       bool            can_emulate_gicv2;
+};
+
+struct vgic_vm_ops {
+       bool    (*handle_mmio)(struct kvm_vcpu *, struct kvm_run *,
+                              struct kvm_exit_mmio *);
+       bool    (*queue_sgi)(struct kvm_vcpu *, int irq);
+       void    (*add_sgi_source)(struct kvm_vcpu *, int irq, int source);
+       int     (*init_model)(struct kvm *);
+       int     (*map_resources)(struct kvm *, const struct vgic_params *);
 };
 
 struct vgic_dist {
@@ -140,6 +153,9 @@ struct vgic_dist {
        bool                    in_kernel;
        bool                    ready;
 
+       /* vGIC model the kernel emulates for the guest (GICv2 or GICv3) */
+       u32                     vgic_model;
+
        int                     nr_cpus;
        int                     nr_irqs;
 
@@ -148,7 +164,11 @@ struct vgic_dist {
 
        /* Distributor and vcpu interface mapping in the guest */
        phys_addr_t             vgic_dist_base;
-       phys_addr_t             vgic_cpu_base;
+       /* GICv2 and GICv3 use different mapped register blocks */
+       union {
+               phys_addr_t             vgic_cpu_base;
+               phys_addr_t             vgic_redist_base;
+       };
 
        /* Distributor enabled */
        u32                     enabled;
@@ -210,8 +230,13 @@ struct vgic_dist {
         */
        struct vgic_bitmap      *irq_spi_target;
 
+       /* Target MPIDR for each IRQ (needed for GICv3 IROUTERn) only */
+       u32                     *irq_spi_mpidr;
+
        /* Bitmap indicating which CPU has something pending */
        unsigned long           *irq_pending_on_cpu;
+
+       struct vgic_vm_ops      vm_ops;
 #endif
 };
 
@@ -229,6 +254,7 @@ struct vgic_v3_cpu_if {
 #ifdef CONFIG_ARM_GIC_V3
        u32             vgic_hcr;
        u32             vgic_vmcr;
+       u32             vgic_sre;       /* Restored only, change ignored */
        u32             vgic_misr;      /* Saved only */
        u32             vgic_eisr;      /* Saved only */
        u32             vgic_elrsr;     /* Saved only */
@@ -275,13 +301,15 @@ struct kvm_exit_mmio;
 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_create(struct kvm *kvm);
+int kvm_vgic_get_max_vcpus(void);
+int kvm_vgic_create(struct kvm *kvm, u32 type);
 void kvm_vgic_destroy(struct kvm *kvm);
 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);
+void vgic_v3_dispatch_sgi(struct kvm_vcpu *vcpu, u64 reg);
 int kvm_vgic_vcpu_pending_irq(struct kvm_vcpu *vcpu);
 bool vgic_handle_mmio(struct kvm_vcpu *vcpu, struct kvm_run *run,
                      struct kvm_exit_mmio *mmio);
@@ -327,7 +355,7 @@ static inline int kvm_vgic_map_resources(struct kvm *kvm)
        return 0;
 }
 
-static inline int kvm_vgic_create(struct kvm *kvm)
+static inline int kvm_vgic_create(struct kvm *kvm, u32 type)
 {
        return 0;
 }
@@ -379,6 +407,11 @@ static inline bool vgic_ready(struct kvm *kvm)
 {
        return true;
 }
+
+static inline int kvm_vgic_get_max_vcpus(void)
+{
+       return KVM_MAX_VCPUS;
+}
 #endif
 
 #endif