[PATCH 0/9] drm/i915: Cursor vblank evasion

[Shankar, Uma]

> -----Original Message-----
> From: Intel-gfx <intel-gfx-bounces at lists.freedesktop.org> On Behalf Of Ville
> Syrjala
> Sent: Wednesday, December 13, 2023 3:55 PM
> To: intel-gfx at lists.freedesktop.org
> Subject: [PATCH 0/9] drm/i915: Cursor vblank evasion
> 
> From: Ville Syrjälä <ville.syrjala at linux.intel.com>
> 
> MTL seems very good at racing the cursor mailbox updates against the vblank,
> causing things to not latch for long enough to cause GTT faults. Attempt to hook
> up vblank evasions into the legacy cursor path to avoid this.
> 
> Also revert a dangerous wm/ddb change related to cursors.

I have already RB'ed the changes in the series but somehow patchwork had issues and
not reflecting the same.

FWIW, this series is
Reviewed-by: Uma Shankar <uma.shankar at intel.com>

Please merge once the CI results show green, seems one test
igt at kms_cursor_legacy@torture-move at pipe-a throwing some warnings.

Regards,
Uma Shankar

> Ville Syrjälä (9):
>   drm/i915: Decouple intel_crtc_vblank_evade_scanlines() from atomic
>     commits
>   drm/i915: Reorder drm_vblank_put() vs. need_vlv_dsi_wa
>   drm/i915: Introduce struct intel_vblank_evade_ctx
>   drm/i915: Include need_vlv_dsi_wa in intel_vblank_evade_ctx
>   drm/i915: Extract intel_vblank_evade()
>   drm/i915: Move the min/max scanline sanity check into
>     intel_vblank_evade()
>   drm/i915: Move intel_vblank_evade() & co. into intel_vblank.c
>   drm/i915: Perform vblank evasion around legacy cursor updates
>   Revert "drm/i915/xe2lpd: Treat cursor plane as regular plane for DDB
>     allocation"
> 
>  .../gpu/drm/i915/display/intel_atomic_plane.c |   6 +-
>  drivers/gpu/drm/i915/display/intel_crtc.c     | 128 ++---------------
>  drivers/gpu/drm/i915/display/intel_cursor.c   |  16 ++-
>  drivers/gpu/drm/i915/display/intel_vblank.c   | 130 ++++++++++++++++++
>  drivers/gpu/drm/i915/display/intel_vblank.h   |  12 ++
>  drivers/gpu/drm/i915/display/skl_watermark.c  |  16 +--
>  6 files changed, 170 insertions(+), 138 deletions(-)
> 
> --
> 2.41.0