[PATCH v2] drm/xe/xe2hpg: Add Wa_22021007897

[Upadhyay, Tejas]

> -----Original Message-----
> From: Bhatia, Aradhya <aradhya.bhatia at intel.com>
> Sent: 07 May 2025 15:41
> To: Roper, Matthew D <matthew.d.roper at intel.com>
> Cc: Intel XE List <intel-xe at lists.freedesktop.org>; Upadhyay, Tejas
> <tejas.upadhyay at intel.com>; Ghimiray, Himal Prasad
> <himal.prasad.ghimiray at intel.com>; Bhatia, Aradhya
> <aradhya.bhatia at intel.com>
> Subject: [PATCH v2] drm/xe/xe2hpg: Add Wa_22021007897
> 
> Add Wa_22021007897 for the Xe2_HPG (graphics version: 20.01) platform.
> It is a permanent workaround, and applicable on all the steppings.
> 
> Signed-off-by: Aradhya Bhatia <aradhya.bhatia at intel.com>
> ---
> Changes in v2:
>   - Fix typo in the SBE_PUSH_CONSTANT_BEHIND_FIX_ENABLE macro.
> 
>  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 cbb9f7cbcfc0..5cd5ab8529c5 100644
> --- a/drivers/gpu/drm/xe/regs/xe_gt_regs.h
> +++ b/drivers/gpu/drm/xe/regs/xe_gt_regs.h
> @@ -156,6 +156,7 @@
>  #define XEHPG_SC_INSTDONE_EXTRA2
> 	XE_REG_MCR(0x7108)
> 
>  #define COMMON_SLICE_CHICKEN4			XE_REG(0x7300,
> XE_REG_OPTION_MASKED)
> +#define   SBE_PUSH_CONSTANT_BEHIND_FIX_ENABLE	REG_BIT(12)
>  #define   DISABLE_TDC_LOAD_BALANCING_CALC	REG_BIT(6)
> 
>  #define COMMON_SLICE_CHICKEN3
> 	XE_REG(0x7304, XE_REG_OPTION_MASKED)
> diff --git a/drivers/gpu/drm/xe/xe_wa.c b/drivers/gpu/drm/xe/xe_wa.c index
> 6f6563cc7430..67196baa4249 100644
> --- a/drivers/gpu/drm/xe/xe_wa.c
> +++ b/drivers/gpu/drm/xe/xe_wa.c
> @@ -827,6 +827,10 @@ static const struct xe_rtp_entry_sr lrc_was[] = {
>  	  XE_RTP_RULES(GRAPHICS_VERSION(2001),
> ENGINE_CLASS(RENDER)),
>  	  XE_RTP_ACTIONS(SET(CHICKEN_RASTER_1,
> DIS_CLIP_NEGATIVE_BOUNDING_BOX))
>  	},
> +	{ XE_RTP_NAME("22021007897"),
> +	  XE_RTP_RULES(GRAPHICS_VERSION(2001),
> ENGINE_CLASS(RENDER)),
> +	  XE_RTP_ACTIONS(SET(COMMON_SLICE_CHICKEN4,
> SBE_PUSH_CONSTANT_BEHIND_FIX_ENABLE))
> +	},

Changes are ok, but why its LRC WA?

Tejas
> 
>  	/* Xe3_LPG */
>  	{ XE_RTP_NAME("14021490052"),
> 
> base-commit: a127cd437da1f18b6ecc9e03226d8e2b2aa79dab
> --
> 2.43.0