Oscar Mateo <oscar.mateo@xxxxxxxxx> writes:
> Avoids an undefined LLC behavior.
>
> BSpec: 9613
>
> v2: Renamed to Wa_1405733216
> v3: Spaces around '<<' and fix surrounding code
> v4: Rebased on top of the WA refactoring
> v5: Added References (Mika)
>
> References: HSDES#1405733216
> Cc: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>
> Signed-off-by: Oscar Mateo <oscar.mateo@xxxxxxxxx>
Reviewed-by: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/i915/i915_reg.h | 5 +++--
> drivers/gpu/drm/i915/intel_workarounds.c | 6 ++++++
> 2 files changed, 9 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> index a132980..845c7e4 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -7232,8 +7232,9 @@ enum {
> #define L3SQ_URB_READ_CAM_MATCH_DISABLE (1<<27)
>
> #define GEN8_L3SQCREG4 _MMIO(0xb118)
> -#define GEN8_LQSC_RO_PERF_DIS (1<<27)
> -#define GEN8_LQSC_FLUSH_COHERENT_LINES (1<<21)
> +#define GEN11_LQSC_CLEAN_EVICT_DISABLE (1 << 6)
> +#define GEN8_LQSC_RO_PERF_DIS (1 << 27)
> +#define GEN8_LQSC_FLUSH_COHERENT_LINES (1 << 21)
>
> /* GEN8 chicken */
> #define HDC_CHICKEN0 _MMIO(0x7300)
> diff --git a/drivers/gpu/drm/i915/intel_workarounds.c b/drivers/gpu/drm/i915/intel_workarounds.c
> index 2bb5dad..b0babe8 100644
> --- a/drivers/gpu/drm/i915/intel_workarounds.c
> +++ b/drivers/gpu/drm/i915/intel_workarounds.c
> @@ -720,6 +720,12 @@ static void icl_gt_workarounds_apply(struct drm_i915_private *dev_priv)
> I915_WRITE(GEN11_GACB_PERF_CTRL,
> ((I915_READ(GEN11_GACB_PERF_CTRL) & ~GEN11_HASH_CTRL_MASK) |
> GEN11_HASH_CTRL_BIT0 | GEN11_HASH_CTRL_BIT4));
> +
> + /* Wa_1405733216:icl
> + * Formerly known as WaDisableCleanEvicts
> + */
> + I915_WRITE(GEN8_L3SQCREG4, (I915_READ(GEN8_L3SQCREG4) |
> + GEN11_LQSC_CLEAN_EVICT_DISABLE));
> }
>
> void intel_gt_workarounds_apply(struct drm_i915_private *dev_priv)
> --
> 1.9.1
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