On 10/19/20 1:23 PM, Bjorn Andersson wrote: > This is the revised fourth attempt of inheriting the stream mapping for > the framebuffer on many Qualcomm platforms, in order to not hit > catastrophic faults during arm-smmu initialization. > > The new approach does, based on Robin's suggestion, take a much more > direct approach with the allocation of a context bank for bypass > emulation and use of this context bank pretty much isolated to the > Qualcomm specific implementation. > > The patchset has been tested to boot DB845c and RB5 (with splash screen) > and Lenovo Yoga C630 (with EFI framebuffer). > > Bjorn Andersson (3): > iommu/arm-smmu: Allow implementation specific write_s2cr > iommu/arm-smmu-qcom: Read back stream mappings > iommu/arm-smmu-qcom: Implement S2CR quirk > > drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 90 ++++++++++++++++++++++ > drivers/iommu/arm/arm-smmu/arm-smmu.c | 13 +++- > drivers/iommu/arm/arm-smmu/arm-smmu.h | 1 + > 3 files changed, 101 insertions(+), 3 deletions(-) > Tested series here on my Lenovo C630. Tested-by: Steev Klimaszewski <steev@xxxxxxxx>
