From: Rob Clark <robdclark@gmail.com> To: dri-devel@lists.freedesktop.org Cc: freedreno@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, Rob Clark <robdclark@chromium.org>, Akhil P Oommen <akhilpo@codeaurora.org>, AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>, Bjorn Andersson <bjorn.andersson@linaro.org>, Douglas Anderson <dianders@chromium.org>, Eric Anholt <eric@anholt.net>, iommu@lists.linux-foundation.org (open list:IOMMU DRIVERS), Iskren Chernev <iskren.chernev@gmail.com>, Joerg Roedel <jroedel@suse.de>, Jonathan Marek <jonathan@marek.ca>, Jordan Crouse <jordan@cosmicpenguin.net>, Konrad Dybcio <konrad.dybcio@somainline.org>, Krishna Reddy <vdumpa@nvidia.com>, "Kristian H. Kristensen" <hoegsberg@google.com>, Lee Jones <lee.jones@linaro.org>, linux-arm-kernel@lists.infradead.org (moderated list:ARM SMMU DRIVERS), linux-kernel@vger.kernel.org (open list), Marijn Suijten <marijn.suijten@somainline.org>, Robin Murphy <robin.murphy@arm.com>, Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>, Sharat Masetty <smasetty@codeaurora.org>, Will Deacon <will@kernel.org>, Zhenzhong Duan <zhenzhong.duan@gmail.com> Subject: [RESEND PATCH v4 0/6] iommu/arm-smmu: adreno-smmu page fault handling Date: Wed, 2 Jun 2021 09:52:43 -0700 [thread overview] Message-ID: <20210602165313.553291-1-robdclark@gmail.com> (raw) From: Rob Clark <robdclark@chromium.org> (Resend, first attempt seems to not have entirely shown up in patchwork and had a random already merged patch tagging along because 00*patch picks up things I forgot to delete) 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. 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@codeaurora.org/ 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 (3): iommu/arm-smmu-qcom: Add stall support drm/msm: Add crashdump support for stalled SMMU drm/msm: devcoredump iommu fault support drivers/gpu/drm/msm/adreno/a2xx_gpu.c | 2 +- drivers/gpu/drm/msm/adreno/a3xx_gpu.c | 2 +- drivers/gpu/drm/msm/adreno/a4xx_gpu.c | 2 +- drivers/gpu/drm/msm/adreno/a5xx_gpu.c | 9 +- drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 101 +++++++++++++++++++- drivers/gpu/drm/msm/adreno/a6xx_gpu.h | 2 +- drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c | 43 +++++++-- drivers/gpu/drm/msm/adreno/adreno_gpu.c | 15 +++ drivers/gpu/drm/msm/msm_debugfs.c | 2 +- drivers/gpu/drm/msm/msm_gem.h | 1 + drivers/gpu/drm/msm/msm_gem_submit.c | 1 + drivers/gpu/drm/msm/msm_gpu.c | 55 ++++++++++- drivers/gpu/drm/msm/msm_gpu.h | 19 +++- 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 +++++++- 20 files changed, 354 insertions(+), 31 deletions(-) -- 2.31.1
next reply other threads:[~2021-06-02 16:49 UTC|newest] Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-06-02 16:52 Rob Clark [this message] 2021-06-02 16:52 ` [RESEND PATCH v4 1/6] iommu/arm-smmu: Add support for driver IOMMU fault handlers Rob Clark 2021-06-08 11:10 ` Will Deacon 2021-06-02 16:52 ` [RESEND PATCH v4 2/6] iommu/arm-smmu-qcom: Add an adreno-smmu-priv callback to get pagefault info Rob Clark 2021-06-02 16:52 ` [RESEND PATCH v4 3/6] drm/msm: Improve the a6xx page fault handler Rob Clark 2021-06-02 16:52 ` [RESEND PATCH v4 4/6] iommu/arm-smmu-qcom: Add stall support Rob Clark 2021-06-02 16:52 ` [RESEND PATCH v4 5/6] drm/msm: Add crashdump support for stalled SMMU Rob Clark 2021-06-03 21:05 ` kernel test robot 2021-06-02 16:52 ` [RESEND PATCH v4 6/6] drm/msm: devcoredump iommu fault support Rob Clark
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