[Intel-gfx] [PATCH 13/19] drm/i915/perf: Add Wa_16010703925:dg2

[Dixit, Ashutosh]

On Tue, 23 Aug 2022 13:41:49 -0700, Umesh Nerlige Ramappa wrote:
>
> On DG2 A0, the OAR report format is buggy. Workaround is to not use it
> for A0. For A0, remove the OAR format from the bitmask of supported
> formats.

Are we going to support A0 upstream? If we are this is:

Reviewed-by: Ashutosh Dixit <ashutosh.dixit at intel.com>

>
> Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa at intel.com>
> ---
>  drivers/gpu/drm/i915/i915_perf.c | 5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c
> index 167e7355980a..a28f07923d8f 100644
> --- a/drivers/gpu/drm/i915/i915_perf.c
> +++ b/drivers/gpu/drm/i915/i915_perf.c
> @@ -4741,6 +4741,11 @@ static void oa_init_supported_formats(struct i915_perf *perf)
>	default:
>		MISSING_CASE(platform);
>	}
> +
> +	if (IS_DG2_GRAPHICS_STEP(i915, G10, STEP_A0, STEP_B0)) {
> +		/* Wa_16010703925:dg2 */
> +		clear_bit(I915_OAR_FORMAT_A36u64_B8_C8, perf->format_mask);
> +	}
>  }
>
>  static void i915_perf_init_info(struct drm_i915_private *i915)
> --
> 2.25.1
>