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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 /lib
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>
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