drm/i915/display: perform transient flush

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Perform manual transient cache flush prior to flip and at the end of
frontbuffer_flush. This is needed to ensure display engine doesn't see
garbage if the surface is L3:XD dirty.

Testcase: igt@xe-pat@display-vs-wb-transient
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Signed-off-by: Balasubramani Vivekanandan <balasubramani.vivekanandan@intel.com>
Acked-by: Nirmoy Das <nirmoy.das@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240430172850.1881525-19-radhakrishna.sripada@intel.com

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Matthew Auld 2024-04-30 10:28:49 -07:00 • committed by Radhakrishna Sripada

parent c01c6066e6

commit 4071ada7ae

5 changed files with 45 additions and 1 deletions

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3

drivers/gpu/drm/i915/display/intel_display.c

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2

drivers/gpu/drm/i915/display/intel_frontbuffer.c

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25

drivers/gpu/drm/i915/display/intel_tdf.h

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3

drivers/gpu/drm/xe/Makefile

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13

drivers/gpu/drm/xe/display/xe_tdf.c

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