[Intel-xe] [PATCH] drm/xe: Add Wa_18028616096

[Matt Roper]

On Mon, Sep 25, 2023 at 09:35:43PM +0530, Shekhar Chauhan wrote:
> Drop UGM per set fragment threshold to 3
> 
> BSpec: 54833
> Signed-off-by: Shekhar Chauhan <shekhar.chauhan 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           | 10 ++++++++++
>  2 files changed, 11 insertions(+)
> 
> diff --git a/drivers/gpu/drm/xe/regs/xe_gt_regs.h b/drivers/gpu/drm/xe/regs/xe_gt_regs.h
> index e13fbbdf6929..3a4c9bcf793f 100644
> --- a/drivers/gpu/drm/xe/regs/xe_gt_regs.h
> +++ b/drivers/gpu/drm/xe/regs/xe_gt_regs.h
> @@ -347,6 +347,7 @@
>  #define   FORCE_1_SUB_MESSAGE_PER_FRAGMENT	REG_BIT(15)
>  
>  #define LSC_CHICKEN_BIT_0_UDW			XE_REG_MCR(0xe7c8 + 4)
> +#define   UGM_FRAGMENT_THRESHOLD_TO_3		REG_BIT(58 - 32)
>  #define   DIS_CHAIN_2XSIMD8			REG_BIT(55 - 32)
>  #define   FORCE_SLM_FENCE_SCOPE_TO_TILE		REG_BIT(42 - 32)
>  #define   FORCE_UGM_FENCE_SCOPE_TO_TILE		REG_BIT(41 - 32)
> diff --git a/drivers/gpu/drm/xe/xe_wa.c b/drivers/gpu/drm/xe/xe_wa.c
> index d84e67a9af07..1450af6cab34 100644
> --- a/drivers/gpu/drm/xe/xe_wa.c
> +++ b/drivers/gpu/drm/xe/xe_wa.c
> @@ -374,6 +374,16 @@ static const struct xe_rtp_entry_sr engine_was[] = {
>  	  XE_RTP_ACTIONS(SET(FF_SLICE_CS_CHICKEN2,
>  			     PERF_FIX_BALANCING_CFE_DISABLE))
>  	},
> +	{ XE_RTP_NAME("18028616096"),
> +	  XE_RTP_RULES(SUBPLATFORM(DG2, G10),
> +		       FUNC(xe_rtp_match_first_render_or_compute)),
> +	  XE_RTP_ACTIONS(SET(LSC_CHICKEN_BIT_0_UDW, UGM_FRAGMENT_THRESHOLD_TO_3))
> +	},
> +	{ XE_RTP_NAME("18028616096"),
> +	  XE_RTP_RULES(SUBPLATFORM(DG2, G12),
> +		       FUNC(xe_rtp_match_first_render_or_compute)),
> +	  XE_RTP_ACTIONS(SET(LSC_CHICKEN_BIT_0_UDW, UGM_FRAGMENT_THRESHOLD_TO_3))
> +	},
>  	{ XE_RTP_NAME("16011620976, 22015475538"),
>  	  XE_RTP_RULES(PLATFORM(DG2),
>  		       FUNC(xe_rtp_match_first_render_or_compute)),
> -- 
> 2.34.1
> 

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