[Bug 92324] New: [Intel-gfx] [PATCH] fixup! drm/i915/skl: Eliminate usage of pipe_wm_parameters from SKL-style WM (v3) [regression]
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Tue Oct 6 19:17:28 PDT 2015
https://bugs.freedesktop.org/show_bug.cgi?id=92324
Bug ID: 92324
Summary: [Intel-gfx] [PATCH] fixup! drm/i915/skl: Eliminate
usage of pipe_wm_parameters from SKL-style WM (v3)
[regression]
Product: DRI
Version: XOrg git
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: NEW
Severity: major
Priority: medium
Component: DRM/Intel
Assignee: intel-gfx-bugs at lists.freedesktop.org
Reporter: jairo.daniel.miramontes.caton at intel.com
QA Contact: intel-gfx-bugs at lists.freedesktop.org
CC: intel-gfx-bugs at lists.freedesktop.org
>> Paulo, I'm not positive that this is the cause of the issues you're
>> seeing, but
>> I did find this unwanted behavior change while re-reading all the SKL
>> watermark
>> code. Could you give this a try and see if it improves your
>> situation at all?
>
> Thanks for the patch, but unfortunately this doesn't solve the problems
> I'm seeing.
>
> For my normal work activities I'm carrying a patch that reverts the
> following commits:
>
> drm/i915: Calculate watermark configuration during atomic check (v2)
> drm/i915: Don't set plane visible during HW readout if CRTC is off
> drm/i915: Calculate ILK-style watermarks during atomic check (v3)
> drm/i915: Calculate pipe watermarks into CRTC state (v3)
> drm/i915: Refactor ilk_update_wm (v3)
> drm/i915: Drop intel_update_sprite_watermarks
>
> So I guess the sprite update thing is very likely the first bad commit.
> I'm also noticing that the screen stays black for _way_ too much time
> during boot, but I'm not sure it's caused by the watermark series:
> might be something else on -nightly.
>
> Thanks,
> Paulo
>
>>
>> drivers/gpu/drm/i915/intel_pm.c | 3 +++
>> 1 file changed, 3 insertions(+)
>>
>> diff --git a/drivers/gpu/drm/i915/intel_pm.c
>> b/drivers/gpu/drm/i915/intel_pm.c
>> index 3857592..22c97f2 100644
>> --- a/drivers/gpu/drm/i915/intel_pm.c
>> +++ b/drivers/gpu/drm/i915/intel_pm.c
>> @@ -2951,6 +2951,9 @@ skl_get_total_relative_data_rate(const struct
>> intel_crtc_state *cstate)
>> if (pstate->fb == NULL)
>> continue;
>>
>> + if (intel_plane->base.type == DRM_PLANE_TYPE_CURSOR)
>> + continue;
>> +
>> /* packed/uv */
>> total_data_rate +=
>> skl_plane_relative_data_rate(cstate,
>> psta
>> te,
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