Oscar Mateo <oscar.ma...@intel.com> writes:
> Revert to the legacy implementation.
>
> v2: GEN7_ROW_CHICKEN2 is masked
> v3:
> - Rebased
> - Renamed to Wa_2006611047
> - A0 and B0 only
> v4:
> - Add spaces around '<<' (and fix the surrounding code as well)
> - Mark the WA as pre-prod
> v5: Rebased on top of the WA refactoring
> v6: Added References (Mika)
> v7: Fixed in B0
>
> References: HSDES#2006611047
> Signed-off-by: Oscar Mateo <oscar.ma...@intel.com>
> Cc: Mika Kuoppala <mika.kuopp...@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuopp...@linux.intel.com>
> ---
> drivers/gpu/drm/i915/i915_reg.h | 5 +++--
> drivers/gpu/drm/i915/intel_workarounds.c | 7 +++++++
> 2 files changed, 10 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> index 6953419..4eb159f 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -8328,8 +8328,9 @@ enum {
>
> #define GEN7_ROW_CHICKEN2 _MMIO(0xe4f4)
> #define GEN7_ROW_CHICKEN2_GT2 _MMIO(0xf4f4)
> -#define DOP_CLOCK_GATING_DISABLE (1<<0)
> -#define PUSH_CONSTANT_DEREF_DISABLE (1<<8)
> +#define DOP_CLOCK_GATING_DISABLE (1 << 0)
> +#define PUSH_CONSTANT_DEREF_DISABLE (1 << 8)
> +#define GEN11_TDL_CLOCK_GATING_FIX_DISABLE (1 << 1)
>
> #define HSW_ROW_CHICKEN3 _MMIO(0xe49c)
> #define HSW_ROW_CHICKEN3_L3_GLOBAL_ATOMICS_DISABLE (1 << 6)
> diff --git a/drivers/gpu/drm/i915/intel_workarounds.c
> b/drivers/gpu/drm/i915/intel_workarounds.c
> index cea5710..04aa885 100644
> --- a/drivers/gpu/drm/i915/intel_workarounds.c
> +++ b/drivers/gpu/drm/i915/intel_workarounds.c
> @@ -463,6 +463,13 @@ static int icl_ctx_workarounds_init(struct
> drm_i915_private *dev_priv)
> */
> WA_SET_BIT_MASKED(ICL_HDC_MODE, HDC_FORCE_NON_COHERENT);
>
> + /* Wa_2006611047:icl (pre-prod)
> + * Formerly known as WaDisableImprovedTdlClkGating
> + */
> + if (IS_ICL_REVID(dev_priv, ICL_REVID_A0, ICL_REVID_A0))
> + WA_SET_BIT_MASKED(GEN7_ROW_CHICKEN2,
> + GEN11_TDL_CLOCK_GATING_FIX_DISABLE);
> +
> return 0;
> }
>
> --
> 1.9.1
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