On Thu, Oct 30, 2014 at 03:47:59PM +0200, Terje Bergström wrote: > On 30.10.2014 15:35, Alexandre Courbot wrote: > > Great, thanks for confirming! > > > > Thierry, how do you want to address this? We could change the register > > for the GPU group, or (maybe preferable if we want to reflect the actual > > hardware state) add the GPUB group. I don't know if that would be easy > > though since we would have the problem of the gpusrd and gpuswr clients > > ownership (seems like they would belong to both groups?) > > gpusrd and gpuswr are client IDs for GPU reads and writes on MC. GPU and > GPUB are SW group IDs for SMMU. There's no 1:1 or hierarchical mapping. Since the GPU client ID is effectively useless for purposes of IOMMU translation I'd lean towards just keeping the existing TEGRA_SWGROUP_GPU and update the register to point to MC_SMMU_GPUB_ASID_0. Thierry
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