[Intel-gfx] [PATCH 1/2] drm/i915/gt: Use MEDIA_VER() when handling media fuses

[Matt Roper]

On Wed, Sep 07, 2022 at 01:39:10PM -0700, Lucas De Marchi wrote:
> Check for media IP version instead of graphics since this is figuring
> out the media engines' configuration. Currently the only platform with
> non-matching graphics/media version is Meteor Lake: update the check in
> gen11_vdbox_has_sfc() so it considers not only version 12, but also any
> later version which then includes that platform.
> 
> Cc: Matt Roper <matthew.d.roper at intel.com>
> Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>
> ---
>  drivers/gpu/drm/i915/gt/intel_engine_cs.c | 11 ++++++-----
>  1 file changed, 6 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
> index 275ad72940c1..5cddee7c2f1d 100644
> --- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c
> +++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
> @@ -654,13 +654,14 @@ bool gen11_vdbox_has_sfc(struct intel_gt *gt,
>  	 */
>  	if ((gt->info.sfc_mask & BIT(physical_vdbox / 2)) == 0)
>  		return false;
> -	else if (GRAPHICS_VER(i915) == 12)
> +	else if (MEDIA_VER(i915) >= 12)
>  		return (physical_vdbox % 2 == 0) ||
>  			!(BIT(physical_vdbox - 1) & vdbox_mask);
> -	else if (GRAPHICS_VER(i915) == 11)
> +	else if (MEDIA_VER(i915) == 11)
>  		return logical_vdbox % 2 == 0;
>  
> -	MISSING_CASE(GRAPHICS_VER(i915));
> +	MISSING_CASE(MEDIA_VER(i915));

Do we even still need the MISSING_CASE given that we now have an
open-ended upper bound above and this is a "gen11" function that doesn't
get called at all on old platforms?

Personally I'd axe it, but up to you.  Either way,

Reviewed-by: Matt Roper <matthew.d.roper at intel.com>

> +
>  	return false;
>  }
>  
> @@ -747,14 +748,14 @@ static intel_engine_mask_t init_engine_mask(struct intel_gt *gt)
>  	 * and bits have disable semantices.
>  	 */
>  	media_fuse = intel_uncore_read(uncore, GEN11_GT_VEBOX_VDBOX_DISABLE);
> -	if (GRAPHICS_VER_FULL(i915) < IP_VER(12, 50))
> +	if (MEDIA_VER_FULL(i915) < IP_VER(12, 50))
>  		media_fuse = ~media_fuse;
>  
>  	vdbox_mask = media_fuse & GEN11_GT_VDBOX_DISABLE_MASK;
>  	vebox_mask = (media_fuse & GEN11_GT_VEBOX_DISABLE_MASK) >>
>  		      GEN11_GT_VEBOX_DISABLE_SHIFT;
>  
> -	if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 50)) {
> +	if (MEDIA_VER_FULL(i915) >= IP_VER(12, 50)) {
>  		fuse1 = intel_uncore_read(uncore, HSW_PAVP_FUSE1);
>  		gt->info.sfc_mask = REG_FIELD_GET(XEHP_SFC_ENABLE_MASK, fuse1);
>  	} else {
> -- 
> 2.37.2
> 

-- 
Matt Roper
Graphics Software Engineer
VTT-OSGC Platform Enablement
Intel Corporation