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KVM: arm64: vgic-its: Introduce ITS emulation file with MMIO framework

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The ARM GICv3 ITS emulation code goes into a separate file, but needs
to be connected to the GICv3 emulation, of which it is an option.
The ITS MMIO handlers require the respective ITS pointer to be passed in,
so we amend the existing VGIC MMIO framework to let it cope with that.
Also we introduce the basic ITS data structure and initialize it, but
don't return any success yet, as we are not yet ready for the show.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Tested-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Andre Przywara
2016-07-15 12:43:30 +01:00
committed by Marc Zyngier
parent 0aa1de5731
commit 59c5ab4098
6 changed files with 213 additions and 13 deletions
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include/kvm/arm_vgic.h
+21 -1
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@@ -108,15 +108,35 @@ struct vgic_irq {
};
struct vgic_register_region;
struct vgic_its;
enum iodev_type {
IODEV_CPUIF,
IODEV_DIST,
IODEV_REDIST,
IODEV_ITS
};
struct vgic_io_device {
gpa_t base_addr;
struct kvm_vcpu *redist_vcpu;
union {
struct kvm_vcpu *redist_vcpu;
struct vgic_its *its;
};
const struct vgic_register_region *regions;
enum iodev_type iodev_type;
int nr_regions;
struct kvm_io_device dev;
};
struct vgic_its {
/* The base address of the ITS control register frame */
gpa_t vgic_its_base;
bool enabled;
struct vgic_io_device iodev;
};
struct vgic_dist {
bool in_kernel;
bool ready;