[Intel-gfx] [PATCH 1/2] drm/i915/tgl: Wa_1606679103

[Chris Wilson]

Quoting Radhakrishna Sripada (2019-11-13 19:18:39)
> Extend disabling SAMPLER_STATE prefetch workaround to gen12.
> 
> BSpec: 52890
> Cc: Mika Kuoppala <mika.kuoppala at linux.intel.com>
> Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada at intel.com>
> ---
>  drivers/gpu/drm/i915/gt/intel_workarounds.c | 12 +++++++-----
>  1 file changed, 7 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c
> index e4bccc14602f..6818d6b3cc90 100644
> --- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
> +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
> @@ -1370,11 +1370,6 @@ rcs_engine_wa_init(struct intel_engine_cs *engine, struct i915_wa_list *wal)
>                                     GEN7_SARCHKMD,
>                                     GEN7_DISABLE_DEMAND_PREFETCH);
>  
> -               /* Wa_1606682166:icl */
> -               wa_write_or(wal,
> -                           GEN7_SARCHKMD,
> -                           GEN7_DISABLE_SAMPLER_PREFETCH);
> -
>                 /* Wa_1409178092:icl */
>                 wa_write_masked_or(wal,
>                                    GEN11_SCRATCH2,
> @@ -1382,6 +1377,13 @@ rcs_engine_wa_init(struct intel_engine_cs *engine, struct i915_wa_list *wal)
>                                    0);
>         }
>  
> +       if (IS_GEN_RANGE(i915, 11, 12)) {
> +               /* Wa_1606682166:icl,tgl */

Wa_1606679103:tgl

as they insist on giving it a new id.

But this is explicitly A0 only, so IS_TGL_REVID(A0, A0).
-Chris