Re: ✗ Fi.CI.IGT: failure for series starting with [01/10] drm/i915: Add windowing for primary planes on gen2/3 and chv

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On Wed, Jun 05, 2019 at 04:01:05PM +0200, Maarten Lankhorst wrote:
> Op 31-05-2019 om 15:05 schreef Ville Syrjälä:
> > On Thu, May 30, 2019 at 05:43:00AM -0000, Patchwork wrote:
> >> == Series Details ==
> >>
> >> Series: series starting with [01/10] drm/i915: Add windowing for primary planes on gen2/3 and chv
> >> URL   : https://patchwork.freedesktop.org/series/61345/
> >> State : failure
> >>
> >> == Summary ==
> >>
> >> CI Bug Log - changes from CI_DRM_6165_full -> Patchwork_13133_full
> >> ====================================================
> >>
> >> Summary
> >> -------
> >>
> >>   **FAILURE**
> >>
> >>   Serious unknown changes coming with Patchwork_13133_full absolutely need to be
> >>   verified manually.
> >>   
> >>   If you think the reported changes have nothing to do with the changes
> >>   introduced in Patchwork_13133_full, please notify your bug team to allow them
> >>   to document this new failure mode, which will reduce false positives in CI.
> >>
> >>   
> >>
> >> Possible new issues
> >> -------------------
> >>
> >>   Here are the unknown changes that may have been introduced in Patchwork_13133_full:
> >>
> >> ### IGT changes ###
> >>
> >> #### Possible regressions ####
> >>
> >>   * igt@kms_plane@pixel-format-pipe-a-planes:
> >>     - shard-glk:          [PASS][1] -> [FAIL][2]
> >>    [1]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6165/shard-glk3/igt@kms_plane@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> >>    [2]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13133/shard-glk8/igt@kms_plane@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> > <7> [125.370679] [drm:drm_mode_debug_printmodeline] Modeline "1920x1080": 60 148500 1920 2008 2052 2200 1080 1084 1089 1125 0x48 0x5
> > ...
> > <7> [125.542650] [drm:intel_dump_cdclk_state [i915]] Changing CDCLK to 79200 kHz, VCO 633600 kHz, ref 19200 kHz, bypass 19200 kHz, voltage
> > level 4
> > ...
> > <7> [133.682144] [drm:skl_check_pipe_max_pixel_rate [i915]] Max supported pixel clock with scaling exceeded
> >
> > Max pixel rate for 64bpp is 79.2*2 * 8/9 = 140.8 Mhz, which we are
> > exceeding. We'd need some way to bump the cdclk for this case, but
> > the kernel will only do that for modesets, and it won't account for
> > that 8/9 factor. Not sure there is a great way to handle these sorts
> > of cases.
> >
> >>   * igt@kms_plane_scaling@pipe-c-scaler-with-pixel-format:
> >>     - shard-apl:          [PASS][3] -> [FAIL][4] +4 similar issues
> >>    [3]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6165/shard-apl5/igt@kms_plane_scaling@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> >>    [4]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13133/shard-apl7/igt@kms_plane_scaling@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> > <7> [1749.831610] [drm:drm_atomic_helper_check_plane_state] Invalid scaling of plane
> > <7> [1749.831620] [drm:drm_rect_debug_print] src: 8.000000x8.000000+0.000000+0.000000
> > <7> [1749.831625] [drm:drm_rect_debug_print] dst: 1920x1080+0+0
> >
> > Not quite sure what's going on here. Unfortunately the debugs don't have
> > enough information to see what's going on.
> 
> For first 6 patches
> 
> Reviewed-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>

Thanks.

> 
> What happens on < gen9 btw with half float support?
> 
> Enabling patches look sane, but worried about hw coverage.
> 
> So if you are sure it works on <gen9 for those on all clocks, go ahead and add my r-b on those too. But I would like to have no regressions so have to get gen9 fixed first before pushing. :)

We do have some missing checks for the cdclk vs. fp16 case on pre-gen9,
as well as missing similar cdclk vs. scaling checks. I think I have some
kind of plan to remedy that. And I can probably tweak that into bumping
the cdclk for fp16 as well (assuming a modeset is allowed for the commit
in question of course).

-- 
Ville Syrjälä
Intel
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