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| author | Marc Zyngier <marc.zyngier@arm.com> | 2013-01-21 19:36:14 -0500 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2013-02-11 18:59:20 +0000 |
| commit | 9d949dce523df878f1fce9f4d7738a5834650927 (patch) | |
| tree | 4d8105c25a5f8dd08afd9fd450be5296a1befc33 /arch/arm/include | |
| parent | b47ef92af8efc30f4fbdeac041397df01b7134af (diff) | |
| download | linux-9d949dce523df878f1fce9f4d7738a5834650927.tar.gz | |
ARM: KVM: VGIC virtual CPU interface management
Add VGIC virtual CPU interface code, picking pending interrupts from the distributor and stashing them in the VGIC control interface list registers. Reviewed-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Christoffer Dall <c.dall@virtualopensystems.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'arch/arm/include')
| -rw-r--r-- | arch/arm/include/asm/kvm_vgic.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/arm/include/asm/kvm_vgic.h b/arch/arm/include/asm/kvm_vgic.h index 4d4f47426a4a..c2dc8574ea3a 100644 --- a/arch/arm/include/asm/kvm_vgic.h +++ b/arch/arm/include/asm/kvm_vgic.h @@ -33,6 +33,7 @@ #define VGIC_NR_PRIVATE_IRQS (VGIC_NR_SGIS + VGIC_NR_PPIS) #define VGIC_NR_SHARED_IRQS (VGIC_NR_IRQS - VGIC_NR_PRIVATE_IRQS) #define VGIC_MAX_CPUS KVM_MAX_VCPUS +#define VGIC_MAX_LRS (1 << 6) /* Sanity checks... */ #if (VGIC_MAX_CPUS > 8) @@ -110,8 +111,33 @@ struct vgic_dist { }; struct vgic_cpu { +#ifdef CONFIG_KVM_ARM_VGIC + /* per IRQ to LR mapping */ + u8 vgic_irq_lr_map[VGIC_NR_IRQS]; + + /* Pending interrupts on this VCPU */ + DECLARE_BITMAP( pending_percpu, VGIC_NR_PRIVATE_IRQS); + DECLARE_BITMAP( pending_shared, VGIC_NR_SHARED_IRQS); + + /* Bitmap of used/free list registers */ + DECLARE_BITMAP( lr_used, VGIC_MAX_LRS); + + /* Number of list registers on this CPU */ + int nr_lr; + + /* CPU vif control registers for world switch */ + u32 vgic_hcr; + u32 vgic_vmcr; + u32 vgic_misr; /* Saved only */ + u32 vgic_eisr[2]; /* Saved only */ + u32 vgic_elrsr[2]; /* Saved only */ + u32 vgic_apr; + u32 vgic_lr[VGIC_MAX_LRS]; +#endif }; +#define LR_EMPTY 0xff + struct kvm; struct kvm_vcpu; struct kvm_run; @@ -119,9 +145,14 @@ struct kvm_exit_mmio; #ifdef CONFIG_KVM_ARM_VGIC int kvm_vgic_set_addr(struct kvm *kvm, unsigned long type, u64 addr); +void kvm_vgic_flush_hwstate(struct kvm_vcpu *vcpu); +void kvm_vgic_sync_hwstate(struct kvm_vcpu *vcpu); +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); +#define irqchip_in_kernel(k) (!!((k)->arch.vgic.vctrl_base)) + #else static inline int kvm_vgic_hyp_init(void) { |