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| author | Marc Zyngier <marc.zyngier@arm.com> | 2016-04-26 11:06:12 +0100 |
|---|---|---|
| committer | Christoffer Dall <christoffer.dall@linaro.org> | 2016-05-20 15:39:49 +0200 |
| commit | 4493b1c4866a03963a35be7d157c911a617a3694 (patch) | |
| tree | 612e202d4d5c4f9536d38637b7b1f7afafbe6b85 /include/kvm | |
| parent | 90eee56c5f9081686035972dfcddfd6c85cafdf9 (diff) | |
| download | linux-4493b1c4866a03963a35be7d157c911a617a3694.tar.bz2 | |
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.h | 13 |
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 { |