[Intel-xe] [PATCH V2] drm/xe/xe2: Add workaround 14019988906

[Matt Roper]

On Tue, Dec 05, 2023 at 11:12:02AM +0530, Tejas Upadhyay wrote:
> This workaround applies to Graphics 20.04 as engine
> workaround
> 
> V2(MattR):
>  - Reorder bit define
>  - Apply WA for RCS only
> 
> Signed-off-by: Tejas Upadhyay <tejas.upadhyay 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           | 4 ++++
>  2 files changed, 5 insertions(+)
> 
> diff --git a/drivers/gpu/drm/xe/regs/xe_gt_regs.h b/drivers/gpu/drm/xe/regs/xe_gt_regs.h
> index d318ec0efd7d..e8dc463a49f6 100644
> --- a/drivers/gpu/drm/xe/regs/xe_gt_regs.h
> +++ b/drivers/gpu/drm/xe/regs/xe_gt_regs.h
> @@ -124,6 +124,7 @@
>  #define   SCOREBOARD_STALL_FLUSH_CONTROL	REG_BIT(5)
>  
>  #define XEHP_PSS_CHICKEN			XE_REG_MCR(0x7044, XE_REG_OPTION_MASKED)
> +#define   FLSH_IGNORES_PSD			REG_BIT(10)
>  #define   FD_END_COLLECT			REG_BIT(5)
>  
>  #define HIZ_CHICKEN					XE_REG(0x7018, XE_REG_OPTION_MASKED)
> diff --git a/drivers/gpu/drm/xe/xe_wa.c b/drivers/gpu/drm/xe/xe_wa.c
> index 63bd4bb1af03..ce897f2d49be 100644
> --- a/drivers/gpu/drm/xe/xe_wa.c
> +++ b/drivers/gpu/drm/xe/xe_wa.c
> @@ -719,6 +719,10 @@ static const struct xe_rtp_entry_sr lrc_was[] = {
>  		       ENGINE_CLASS(RENDER)),
>  	  XE_RTP_ACTIONS(SET(WM_CHICKEN3, HIZ_PLANE_COMPRESSION_DIS))
>  	},
> +	{ XE_RTP_NAME("14019988906"),
> +	  XE_RTP_RULES(GRAPHICS_VERSION(2004), ENGINE_CLASS(RENDER)),
> +	  XE_RTP_ACTIONS(SET(XEHP_PSS_CHICKEN, FLSH_IGNORES_PSD))
> +	},
>  
>  	{}
>  };
> -- 
> 2.25.1
> 

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