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authorAndre Przywara <andre.przywara@arm.com>2016-07-15 12:43:32 +0100
committerMarc Zyngier <marc.zyngier@arm.com>2016-07-18 18:14:36 +0100
commit424c33830f53f248a68da125e70d9a4d95a8e010 (patch)
tree9b975ccc2cb6083ce3ebe9ba865e6904dad595f7 /virt/kvm/arm/vgic/vgic-v3.c
parent1085fdc68c6097244627a02a56bd2d8fe58a1a9c (diff)
downloadlinux-stericsson-424c33830f53f248a68da125e70d9a4d95a8e010.tar.gz
KVM: arm64: vgic-its: Implement basic ITS register handlers
Add emulation for some basic MMIO registers used in the ITS emulation. This includes: - GITS_{CTLR,TYPER,IIDR} - ID registers - GITS_{CBASER,CREADR,CWRITER} (which implement the ITS command buffer handling) - GITS_BASER<n> Most of the handlers are pretty straight forward, only the CWRITER handler is a bit more involved by taking the new its_cmd mutex and then iterating over the command buffer. The registers holding base addresses and attributes are sanitised before storing them. 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>
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