[PATCH v2] drm/xe/xelpg: Add Wa_14020495402

[Matt Roper]

On Mon, Mar 18, 2024 at 02:01:20PM -0700, Radhakrishna Sripada wrote:
> Disable clockgating for TDL SVHS fub.
> 
> v2: Extend the Wa to 1274(MattR)
> 
> Bspec: 46045
> Reviewed-by: Matt Roper <matthew.d.roper at intel.com>
> Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada at intel.com>

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

> ---
>  drivers/gpu/drm/xe/regs/xe_gt_regs.h | 1 +
>  drivers/gpu/drm/xe/xe_wa.c           | 5 +++++
>  2 files changed, 6 insertions(+)
> 
> diff --git a/drivers/gpu/drm/xe/regs/xe_gt_regs.h b/drivers/gpu/drm/xe/regs/xe_gt_regs.h
> index 15ac2d284d48..acf7bbe8cc8d 100644
> --- a/drivers/gpu/drm/xe/regs/xe_gt_regs.h
> +++ b/drivers/gpu/drm/xe/regs/xe_gt_regs.h
> @@ -364,6 +364,7 @@
>  #define   DISABLE_EARLY_READ			REG_BIT(14)
>  #define   ENABLE_LARGE_GRF_MODE			REG_BIT(12)
>  #define   PUSH_CONST_DEREF_HOLD_DIS		REG_BIT(8)
> +#define   DISABLE_TDL_SVHS_GATING		REG_BIT(1)
>  #define   DISABLE_DOP_GATING			REG_BIT(0)
>  
>  #define RT_CTRL					XE_REG_MCR(0xe530)
> diff --git a/drivers/gpu/drm/xe/xe_wa.c b/drivers/gpu/drm/xe/xe_wa.c
> index 2460c570e628..a8d0e7534aac 100644
> --- a/drivers/gpu/drm/xe/xe_wa.c
> +++ b/drivers/gpu/drm/xe/xe_wa.c
> @@ -396,6 +396,11 @@ static const struct xe_rtp_entry_sr engine_was[] = {
>  	  XE_RTP_ACTIONS(SET(XEHP_HDC_CHICKEN0, DIS_ATOMIC_CHAINING_TYPED_WRITES,
>  			     XE_RTP_NOCHECK))
>  	},
> +	{ XE_RTP_NAME("14020495402"),
> +	  XE_RTP_RULES(GRAPHICS_VERSION_RANGE(1270, 1274),
> +		       FUNC(xe_rtp_match_first_render_or_compute)),
> +	  XE_RTP_ACTIONS(SET(ROW_CHICKEN2, DISABLE_TDL_SVHS_GATING))
> +	},
>  
>  	/* Xe2_LPG */
>  
> -- 
> 2.34.1
> 

-- 
Matt Roper
Graphics Software Engineer
Linux GPU Platform Enablement
Intel Corporation