Re: [PATCH v2 04/21] drm/i915/mtl: Don't mask off CCS according to DSS fusing

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On 18.08.2022 16:41, Radhakrishna Sripada wrote:
> From: Matt Roper <matthew.d.roper@xxxxxxxxx>
> 
> Unlike the Xe_HP platforms, MTL only has a single CCS engine; the
> quad-based engine masking logic does not apply to this platform (or
> presumably any future platforms that only have 0 or 1 CCS).
> 
> Signed-off-by: Matt Roper <matthew.d.roper@xxxxxxxxx>
> Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@xxxxxxxxx>
> ---
>  drivers/gpu/drm/i915/gt/intel_engine_cs.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Reviewed-by: Balasubramani Vivekanandan <balasubramani.vivekanandan@xxxxxxxxx>

> 
> diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
> index 37fa813af766..17e7f20bbb48 100644
> --- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c
> +++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
> @@ -672,7 +672,7 @@ static void engine_mask_apply_compute_fuses(struct intel_gt *gt)
>  	unsigned long ccs_mask;
>  	unsigned int i;
>  
> -	if (GRAPHICS_VER_FULL(i915) < IP_VER(12, 50))
> +	if (hweight32(CCS_MASK(gt)) <= 1)
>  		return;
>  
>  	ccs_mask = intel_slicemask_from_xehp_dssmask(info->sseu.compute_subslice_mask,
> -- 
> 2.25.1
> 



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