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[67.168.198.145]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3ae8803a80asm96244a91.3.2026.10.29.13.17.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 29 Oct 2026 13:17:47 -0700 (PDT) From: Rob Clark To: dri-devel@lists.freedesktop.org Cc: linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, Alexander Koskovich , Jie Zhang , Akhil P Oommen , Bhaskar Reddy Valluru , Rob Clark , Abhinav Kumar , David Airlie , Dmitry Baryshkov , Jessica Zhang , Konrad Dybcio , linux-kernel@vger.kernel.org (open list), Marijn Suijten , Sean Paul , Simona Vetter Subject: [PATCH v3 00/16] drm/msm/a8xx: GPU state capture support Date: Thu, 29 Oct 2026 13:16:10 -0700 Message-ID: <20261029201730.151754-1-robin.clark@oss.qualcomm.com> X-Mailer: git-send-email 2.56.0 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-Spam-Info: AW1haW4tMjYxMDI5MDA3OSBTYWx0ZWRfX38afOq+ZwUvD 0DaOHi35OGURFkt2uogKJSx7BhEB39vcg+TYM9n0GR2p71qgWF3JHBJx/D7PiJbznCsWSCt7eTF I3jPytg4QGP5DnXLporV1VB/cyV8bDs= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDI5MDA3OSBTYWx0ZWRfX2+VRX61SMehH oPEDb5t85wkjFyaFmEGOKX0Jr5fFcRYMQ6YcTX2h4N5QKVbxwOI1gPIYs1pLqf6mV2+2/ahrqWL 9LdlDwyA84JYYxx755RZsFjHtAPzAUxO9sm36F/GTVAkNMnEka9QslyBqDt+3atoYS8V639uPVK oAze9AZmdjcOoOFRcmqfHzG5lFrQKiURyLZOhebBddOuBtefedRUTW3k1ZReYKuamM/l3hPbaQp HpF7ULJyemz2knB1jGBRxt+6LsuJWTV6etsVMcl7mB1zo+oTFLa3c1ZKUvFrFr23mMI7I3HsoGJ 85bCeTsRJuFGw7zcRvvg5WEUrsXM+6yTOgUSUnepi+Bt8dmRFFB5wz+FOLhugdSih2p8F3LM7SS 5Tkw9HajuI0tggzhgfVLIHkc7xTzYIAsIdAILDfxJ6fqDbyViW4cgrJFSL1IiTdQSsKkJz2BCGN M24soZDZ4bWlhkHFCBA== X-Authority-Analysis: v=2.4 cv=A8T5rKWG c=1 sm=1 tr=0 ts=6ae3a9ed cx=c_pps a=Oh5Dbbf/trHjhBongsHeRQ==:117 a=6Rn/7xRx7Ub4NEhlm8k1cw==:17 a=660iZSQnnn4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=DJpcGTmdVt4CTyJn9g5Z:22 a=e5mUnYsNAAAA:8 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=Xe6-QGUCc6mO8dw4QqkA:9 a=_Vgx9l1VpLgwpw_dHYaR:22 a=Vxmtnl_E_bksehYqCbjh:22 X-Proofpoint-GUID: QVpUEVuMRfmwbVJSMddz0CHJyG_sSrhw X-Proofpoint-ORIG-GUID: QVpUEVuMRfmwbVJSMddz0CHJyG_sSrhw X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.138,FMLib:17.12.100.49 definitions=2026-10-29_06,2026-10-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 spamscore=0 bulkscore=0 priorityscore=1501 impostorscore=0 malwarescore=0 clxscore=1015 suspectscore=0 lowpriorityscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610190000 definitions=main-2610290079 This series introduces gen8 devcoredump support. Compared to previous gens, it: 1. Switches to generated tables. Compared to hand modifying headers from kgsl (which were originally generated, then adjusted a bit by hand before adding to kgsl tree. And then copied to drm/msm and lightly modified some more in the process). In the process, we also switch to generated cp_protect tables. 2. Aligns to the "snapshot" format that kgsl/etc use for hw state capture. The non-generation specific bits (SMMU fault info, capturing relevant BOs, etc) still works as before. Everything gen8 specific gets encoded as "snapshot" sections, ascii85 encoded in the resulting devcoredump file (similar to captured BOs). 3. Try to make it easier to at least compare kgsl snapshot code with upstream, for porting fixes/etc. State capture is tedious and mind- numbing, and the last thing you want to do when debugging a GPU hang is going down the rabbit hole of having to first debug gpu state capture. However, I don't love kgsl_snapshot_add_section(). It does avoid duplicating snapshot header stuff everywhere. But the ergonomics are not great. So instead I went with "align with what I wish kgsl looked like.. The mesa/crashdec side of this is at: https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/45304 I'd appreciate tested-by's on Hawi, Maili, Milos, and Pakala, since I don't have these devices at-hand to test myself. To test devcoredump, you can use the msm_recovery test in igt.. or just: cat /sys/kernel/debug/dri/*/gpu > /dev/null NOTE: I'm still tracking down some descrepancies compared to kgsl. I think at least we should be matching on the excluded access- protected regs, so hopefully collecting a devcoredump doesn't make things go boom. Tested on glymur (windows fw) and on kaanapali MTP (android fw). NOTE: Uses $codename for generated file/table names, rather than continue to perpetuate the equally meaningless gen8_x_y naming from kgsl into upstream. At least the codenames are familiar upstream and this removes an extra level of name translation. v3: - Drop generated nonctx list for now - Exclude access protected registers - Shuffle around some debugbus blocks to match kgsl - Use CP_PROTECT_PIPE regs to pickup the extra spans if we exceed the 64 CP_PROTECT_GLOBAL regs - Inhibit IFPC for gpu debugfs dump - Fix cx_dbgc capture - Misc other small fixes - Link to v2: https://lore.kernel.org/all/20261021204244.67160-1-robin.clark@oss.qualcomm.com/ v2: - Fix incorrect protect list for Kaanapali - Use __free() for snapshot_sect finalization - Fix missing early return error path in gen8_snapshot_mempool() - Fix aperture setting in gen8_legacy_snapshot_mvc() - Fix first_slice in gen8_snapshot_mempool() - Remove GBIF regs in generated nonctx list - Link to v1: https://lore.kernel.org/all/20261020204728.28844-1-robin.clark@oss.qualcomm.com/ Rob Clark (16): drm/msm: Import adreno_snapshot.h drm/msm/a8xx: Export aperture helpers drm/msm/a8xx: Add a8xx_aperture_acquire_raw() drm/msm/a8xx: Export slice helper drm/msm/a8xx: Add missing a850 ifpc reglist entries drm/msm/a8xx: Allow nonctx reglist to include GMU regs drm/msm/a8xx: Stop getting GMEM_PROTECT from nonctx list drm/msm/adreno: Fix PROTECT span length drm/msm/adreno: add temporary __maybe_unused drm/msm/a8xx: Import generated headers drm/msm: Inhibit IFPC for state snapshot drm/msm/a8xx: devcoredump state capture support drm/msm/a8xx: Add all CP_PROTECT_PIPE to pwrup reglist drm/msm/a8xx: Use CP_PROTECT_PIPE regs drm/msm/a8xx: Switch to generated protect regs drm/msm/adreno: Remove temporary __maybe_unused drivers/gpu/drm/msm/Makefile | 4 +- drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 7 + drivers/gpu/drm/msm/adreno/a6xx_gpu.h | 14 +- drivers/gpu/drm/msm/adreno/a8xx_catalog.c | 398 +-- drivers/gpu/drm/msm/adreno/a8xx_gpu.c | 65 +- drivers/gpu/drm/msm/adreno/a8xx_gpu_state.c | 1402 ++++++++++ .../gpu/drm/msm/adreno/adreno_gen8_snapshot.h | 576 ++++ drivers/gpu/drm/msm/adreno/adreno_gpu.h | 2 + drivers/gpu/drm/msm/adreno/adreno_snapshot.h | 529 ++++ .../drm/msm/adreno/catalog/adreno_glymur.h | 2307 ++++++++++++++++ .../gpu/drm/msm/adreno/catalog/adreno_hawi.h | 2387 +++++++++++++++++ .../drm/msm/adreno/catalog/adreno_kaanapali.h | 2317 ++++++++++++++++ .../gpu/drm/msm/adreno/catalog/adreno_maili.h | 1882 +++++++++++++ .../gpu/drm/msm/adreno/catalog/adreno_milos.h | 1977 ++++++++++++++ .../drm/msm/adreno/catalog/adreno_pakala.h | 2161 +++++++++++++++ drivers/gpu/drm/msm/msm_debugfs.c | 10 + drivers/gpu/drm/msm/registers/adreno/a6xx.xml | 4 + 17 files changed, 15726 insertions(+), 316 deletions(-) create mode 100644 drivers/gpu/drm/msm/adreno/a8xx_gpu_state.c create mode 100644 drivers/gpu/drm/msm/adreno/adreno_gen8_snapshot.h create mode 100644 drivers/gpu/drm/msm/adreno/adreno_snapshot.h create mode 100644 drivers/gpu/drm/msm/adreno/catalog/adreno_glymur.h create mode 100644 drivers/gpu/drm/msm/adreno/catalog/adreno_hawi.h create mode 100644 drivers/gpu/drm/msm/adreno/catalog/adreno_kaanapali.h create mode 100644 drivers/gpu/drm/msm/adreno/catalog/adreno_maili.h create mode 100644 drivers/gpu/drm/msm/adreno/catalog/adreno_milos.h create mode 100644 drivers/gpu/drm/msm/adreno/catalog/adreno_pakala.h -- 2.56.0