Re: [PATCH v8 7/9] drm/i915/gt: Ensure memory quiesced before invalidation for all engines

[Andrzej Hajda <andrzej.hajda@xxxxxxxxx>]

On 24.07.2023 11:14, Andi Shyti wrote:
> Hi Andrzej,
>
> > >    	intel_engine_mask_t aux_inv = 0;
> > > -	u32 cmd, *cs;
> > > +	u32 cmd_flush = 0;
> > > +	u32 cmd = 4;
> > > +	u32 *cs;
> > > -	cmd = 4;
> > > -	if (mode & EMIT_INVALIDATE) {
> > > +	if (mode & EMIT_INVALIDATE)
> > >    		cmd += 2;
> > > -		if (gen12_needs_ccs_aux_inv(rq->engine) &&
> > > -		    (rq->engine->class == VIDEO_DECODE_CLASS ||
> > > -		     rq->engine->class == VIDEO_ENHANCEMENT_CLASS)) {
> > > -			aux_inv = rq->engine->mask &
> > > -				~GENMASK(_BCS(I915_MAX_BCS - 1), BCS0);
> > > -			if (aux_inv)
> > > -				cmd += 4;
> > > -		}
> > > +	if (gen12_needs_ccs_aux_inv(rq->engine))
> > > +		aux_inv = rq->engine->mask &
> > > +			  ~GENMASK(_BCS(I915_MAX_BCS - 1), BCS0);
> > Shouldn't we remove BCS check for MTL? And move it inside
> > gen12_needs_ccs_aux_inv?
> > Btw aux_inv is used as bool, make better is to make it bool.
> Both the cleanups come in patch 9. I wanted to move it initially
> before, but per engine check come later in the series.
>
> I think would need to re-architecture all the patch structure if
> I want to remove it :)
>
> Are you strong with this change?

Nope, if it finally arrives then OK for me.

Reviewed-by: Andrzej Hajda <andrzej.hajda@xxxxxxxxx>

Regards
Andrzej



> Andi