[Intel-gfx] [PATCH v4 0/4] Handle dma fences in dirtyfb ioctl

[Ville Syrjälä]

On Fri, Sep 01, 2023 at 12:34:56PM +0300, Jouni Högander wrote:
> Currently i915 dirtyfb ioctl is not taking dma fences into
> account. This works with features like FBC, PSR, DRRS because our gem
> code is triggering flush again when rendering completes. We are
> targeting in getting rid of frontbuffer tracking code: Flusing hook
> from gem code will be removed as well.
> 
> This patch set is adding dma fence handling into i915 dirtyfb ioctl.
> 
> v4:
>  - Move invalidate back being done before cb is added
> v3:
>  - Check frontbuffer bits before adding any fence fb
>  - Invalidate only when adding fence cb succeeds
>  - Check schedule work success rather than work being pending
>  - Init flush work when frontbuffer struct is initialized
> v2:
>  - Clear fbc and psr busy bits on flip
>  - Check if flush work is already pending
>  - Use dma_resv_get_singleton
> 
> Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
> Cc: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>

For the series:
Reviewed-by: Ville Syrjälä <ville.syrjala at linux.intel.com>

> 
> Jouni Högander (4):
>   drm/i915/fbc: Clear frontbuffer busy bits on flip
>   drm/i915/psr: Clear frontbuffer busy bits on flip
>   drm/i915: Add new frontbuffer tracking interface to queue flush
>   drm/i915: Handle dma fences in dirtyfb callback
> 
>  drivers/gpu/drm/i915/display/intel_fb.c       | 60 ++++++++++++++++++-
>  drivers/gpu/drm/i915/display/intel_fbc.c      |  6 +-
>  .../gpu/drm/i915/display/intel_frontbuffer.c  | 28 +++++++++
>  .../gpu/drm/i915/display/intel_frontbuffer.h  |  4 ++
>  drivers/gpu/drm/i915/display/intel_psr.c      |  6 ++
>  5 files changed, 97 insertions(+), 7 deletions(-)
> 
> -- 
> 2.34.1

-- 
Ville Syrjälä
Intel