| Summary: | [BAT BYT regression] WARNING "Unclaimed register detected before reading register 0x186500" | ||||||||||
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| Product: | DRI | Reporter: | Daniel Vetter <daniel> | ||||||||
| Component: | DRM/Intel | Assignee: | Mika Kuoppala <mika.kuoppala> | ||||||||
| Status: | CLOSED FIXED | QA Contact: | Intel GFX Bugs mailing list <intel-gfx-bugs> | ||||||||
| Severity: | normal | ||||||||||
| Priority: | highest | CC: | intel-gfx-bugs, ville.syrjala | ||||||||
| Version: | XOrg git | ||||||||||
| Hardware: | Other | ||||||||||
| OS: | All | ||||||||||
| Whiteboard: | |||||||||||
| i915 platform: | BYT | i915 features: | display/atomic | ||||||||
| Attachments: |
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Description
Daniel Vetter
2016-01-13 13:29:56 UTC
Assigning to Mika since he last touched this self-check. Argh, copypaste fail. The affected testcase is kms_pipe_crc_basic@nonblocking-crc-pipe-b Looking at long-term history in /archive/results/CI_IGT_test/igt@kms_pipe_crc_basic@nonblocking-crc-pipe-b.html it seems to be a regression that started with CI_DRM_963 This unclaimed has always been there, it is just that we enabled the debugs for byt/bsw too, which brought this to surface. If you look closely there is identical trace with bsw, but with different testcase: igt@kms_pipe_crc_basic@read-crc-pipe-c-frame-sequence I have verified that indeed the power wells are all off when we set the memory_cxsr, from intel_pre_plane_update(). Ville knows about this and according to him this is a real problem with atomic commit in how/where intel_pre_plane_update() is called. Patch pushed which removes the warning in byt/bsw if mmio_debug is not set. Use i915.mmio_debug=10000 to reproduce. Assigning to QA for verification Created attachment 122180 [details] kern-with-mmio_debug.log I don't see this warning when executing kms_pipe_crc_basic@nonblocking-crc-pipe-b. But I also don't see it with kernel boot command line: i915.mmio_debug=10000 Do we need to track it? Hardware Platform : Bay Trail M CPU : Intel(R) Celeron(R) CPU N2930 @ 1.83GHz (family: 6, model: 55 stepping: 8) SoC : VLV C0 CRB : Bayley Bay Fab3 Rev 03 Bios: 100.21 Software Linux distribution: Ubuntu 15.10 64 bits Kernel drm-intel-nightly 4.5.0-rc7 from http://cgit.freedesktop.org/drm-intel/ drm: tag 2.4.67-5 ea07de9 from http://cgit.freedesktop.org/mesa/drm/ mesa: tag 11.1.2 7bcd827 from http://cgit.freedesktop.org/mesa/mesa/ cairo: tag 1.15.2 db8a7f1 from http://cgit.freedesktop.org/cairo IGT: 1.14 174a06 from http://anongit.freedesktop.org/git/xorg/app/intel-gpu-tools.git commit 2dfd178dc05164d6d730f4b3649accc1ee1ee585 Author: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Date: Wed Feb 3 16:53:25 2016 +0100 drm/i915: Do not disable cxsr when crtc is disabled. with/ without i915.mmio_debug=10000 the warning message does not appears in dmesg Hardware information ==================== Platform : BYT-M (Toshiba) Motherboard model : Satellite C55t-A Motherboard type : Portable PC Notebook Motherboard manufacturer : TOSHIBA CPU family : Atom CPU information : Intel(R) Celeron(R) CPU N2820 @ 2.13GHz GPU Card : Intel Corporation Atom Processor Z36xxx/Z37xxx Series Graphics & Display (rev 0c) (prog-if 00 [VGA controller]) Memory ram : 4 GB Software information ===================== --> Component : drm url : http://cgit.freedesktop.org/mesa/drm tag : libdrm-2.4.67-7-g49041c3 commit : 49041c3 author : Rob Clark <robclark@freedesktop.org> age : 4 weeks ago --> Component : mesa url : http://cgit.freedesktop.org/mesa/mesa tag : mesa-11.1.2 commit : 7bcd827 author : Emil Velikov <emil.velikov@collabora.com> age : 6 weeks ago --> Component : xf86-video-intel url : http://cgit.freedesktop.org/xorg/driver/xf86-video-intel tag : 2.99.917-579-g74cd4d0 commit : 74cd4d0 author : Chris Wilson <chris@chris-wilson.co.uk> age : 6 days ago --> Component : libva url : http://cgit.freedesktop.org/libva/ tag : libva-1.7.0-1-g2339d10 commit : 2339d10 author : Xiang Haihao <haihao.xiang@intel.com> age : 6 days ago --> Component : vaapi (intel-driver) url : http://cgit.freedesktop.org/vaapi/intel-driver tag : 1.7.0-5-g759e44d commit : 759e44d author : peng.chen <peng.c.chen@intel.com> age : 7 days ago --> Component : cairo url : http://cgit.freedesktop.org/cairo tag : 1.15.2 commit : db8a7f1 author : Bryce Harrington <bryce@osg.samsung.com> age : 3 months ago --> Component : xserver url : http://cgit.freedesktop.org/xorg/xserver tag : xorg-server-1.18.0-247-ga288cf5 commit : a288cf5 author : Dave Airlie <airlied@redhat.com> age : 7 days ago --> Component : intel-gpu-tools url : http://cgit.freedesktop.org/xorg/app/intel-gpu-tools tag : intel-gpu-tools-1.14-115-g7fc5256 commit : 7fc5256 author : Lionel Landwerlin <lionel.g.landwerlin@intel.com> age : 4 days ago kernel information =================== Branch = drm-intel-nightly commit 4b39223f6e3bef4dfa678f7239dcd87c38e20e96 Author: Matt Roper <matthew.d.roper@intel.com> Date: Mon Mar 21 11:44:01 2016 -0700 drm-intel-nightly: 2016y-03m-21d-18h-43m-18s UTC integration manifest Attachments ================ dmesg_with_i915.mmio_debug=10000.log dmesg_without_i915.mmio_debug=10000.log Created attachment 122499 [details]
dmesg_with_i915.mmio_debug=10000.log
Created attachment 122500 [details]
dmesg_without_i915.mmio_debug=10000.log
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