On Sun 04 Jul 13:20 CDT 2021, Rob Clark wrote: > I suspect you are getting a dpu fault, and need: > > https://lore.kernel.org/linux-arm-msm/CAF6AEGvTjTUQXqom-xhdh456tdLscbVFPQ+iud1H1gHc8A2=hA@xxxxxxxxxxxxxx/ > > I suppose Bjorn was expecting me to send that patch > No, I left that discussion with the same understanding as you... But I ended up side tracked by some other craziness. Did you post this somewhere or would you still like me to test it and spin a patch? Regards, Bjorn > BR, > -R > > On Sun, Jul 4, 2021 at 5:53 AM Dmitry Baryshkov > <dmitry.baryshkov@xxxxxxxxxx> wrote: > > > > Hi, > > > > I've had splash screen disabled on my RB3. However once I've enabled it, > > I've got the attached crash during the boot on the msm/msm-next. It > > looks like it is related to this particular set of changes. > > > > On 11/06/2021 00:44, Rob Clark wrote: > > > From: Rob Clark <robdclark@xxxxxxxxxxxx> > > > > > > This picks up an earlier series[1] from Jordan, and adds additional > > > support needed to generate GPU devcore dumps on iova faults. Original > > > description: > > > > > > This is a stack to add an Adreno GPU specific handler for pagefaults. The first > > > patch starts by wiring up report_iommu_fault for arm-smmu. The next patch adds > > > a adreno-smmu-priv function hook to capture a handful of important debugging > > > registers such as TTBR0, CONTEXTIDR, FSYNR0 and others. This is used by the > > > third patch to print more detailed information on page fault such as the TTBR0 > > > for the pagetable that caused the fault and the source of the fault as > > > determined by a combination of the FSYNR1 register and an internal GPU > > > register. > > > > > > This code provides a solid base that we can expand on later for even more > > > extensive GPU side page fault debugging capabilities. > > > > > > v5: [Rob] Use RBBM_STATUS3.SMMU_STALLED_ON_FAULT to detect case where > > > GPU snapshotting needs to avoid crashdumper, and check the > > > RBBM_STATUS3.SMMU_STALLED_ON_FAULT in GPU hang irq paths > > > v4: [Rob] Add support to stall SMMU on fault, and let the GPU driver > > > resume translation after it has had a chance to snapshot the GPUs > > > state > > > v3: Always clear FSR even if the target driver is going to handle resume > > > v2: Fix comment wording and function pointer check per Rob Clark > > > > > > [1] https://lore.kernel.org/dri-devel/20210225175135.91922-1-jcrouse@xxxxxxxxxxxxxx/ > > > > > > Jordan Crouse (3): > > > iommu/arm-smmu: Add support for driver IOMMU fault handlers > > > iommu/arm-smmu-qcom: Add an adreno-smmu-priv callback to get pagefault > > > info > > > drm/msm: Improve the a6xx page fault handler > > > > > > Rob Clark (2): > > > iommu/arm-smmu-qcom: Add stall support > > > drm/msm: devcoredump iommu fault support > > > > > > drivers/gpu/drm/msm/adreno/a5xx_gpu.c | 23 +++- > > > drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 110 +++++++++++++++++++- > > > drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c | 42 ++++++-- > > > drivers/gpu/drm/msm/adreno/adreno_gpu.c | 15 +++ > > > drivers/gpu/drm/msm/msm_gem.h | 1 + > > > drivers/gpu/drm/msm/msm_gem_submit.c | 1 + > > > drivers/gpu/drm/msm/msm_gpu.c | 48 +++++++++ > > > drivers/gpu/drm/msm/msm_gpu.h | 17 +++ > > > drivers/gpu/drm/msm/msm_gpummu.c | 5 + > > > drivers/gpu/drm/msm/msm_iommu.c | 22 +++- > > > drivers/gpu/drm/msm/msm_mmu.h | 5 +- > > > drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 50 +++++++++ > > > drivers/iommu/arm/arm-smmu/arm-smmu.c | 9 +- > > > drivers/iommu/arm/arm-smmu/arm-smmu.h | 2 + > > > include/linux/adreno-smmu-priv.h | 38 ++++++- > > > 15 files changed, 367 insertions(+), 21 deletions(-) > > > > > > > > > -- > > With best wishes > > Dmitry
