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authorMarc Zyngier <marc.zyngier@arm.com>2016-04-26 11:06:12 +0100
committerChristoffer Dall <christoffer.dall@linaro.org>2016-05-20 15:39:49 +0200
commit4493b1c4866a03963a35be7d157c911a617a3694 (patch)
tree612e202d4d5c4f9536d38637b7b1f7afafbe6b85 /include/kvm
parent90eee56c5f9081686035972dfcddfd6c85cafdf9 (diff)
KVM: arm/arm64: vgic-new: Add MMIO handling framework
Add an MMIO handling framework to the VGIC emulation: Each register is described by its offset, size (or number of bits per IRQ, if applicable) and the read/write handler functions. We provide initialization macros to describe each GIC register later easily. Separate dispatch functions for read and write accesses are connected to the kvm_io_bus framework and binary-search for the responsible register handler based on the offset address within the region. We convert the incoming data (referenced by a pointer) to the host's endianess and use pass-by-value to hand the data over to the actual handler functions. The register handler prototype and the endianess conversion are courtesy of Christoffer Dall. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org> Signed-off-by: Andre Przywara <andre.przywara@arm.com> Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Diffstat (limited to 'include/kvm')
-rw-r--r--include/kvm/vgic/vgic.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/include/kvm/vgic/vgic.h b/include/kvm/vgic/vgic.h
index f6632880870f..ff3f9c2abd95 100644
--- a/include/kvm/vgic/vgic.h
+++ b/include/kvm/vgic/vgic.h
@@ -106,6 +106,16 @@ struct vgic_irq {
enum vgic_irq_config config; /* Level or edge */
};
+struct vgic_register_region;
+
+struct vgic_io_device {
+ gpa_t base_addr;
+ struct kvm_vcpu *redist_vcpu;
+ const struct vgic_register_region *regions;
+ int nr_regions;
+ struct kvm_io_device dev;
+};
+
struct vgic_dist {
bool in_kernel;
bool ready;
@@ -132,6 +142,9 @@ struct vgic_dist {
bool enabled;
struct vgic_irq *spis;
+
+ struct vgic_io_device dist_iodev;
+ struct vgic_io_device *redist_iodevs;
};
struct vgic_v2_cpu_if {