[PATCH] drm/xe/gt: Apply Wa_14020881953

[Matt Roper]

On Tue, Jul 30, 2024 at 03:45:30PM -0700, Vinay Belgaumkar wrote:
> This WA requires us to disable Render power gating. There is a second part
> to the WA which requires setting a WA bit in GuC. That will be done once
> GuC FW has those changes.
> 
> Cc: Matt Roper <matthew.d.roper at intel.com>
> Signed-off-by: Vinay Belgaumkar <vinay.belgaumkar at intel.com>

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

> ---
>  drivers/gpu/drm/xe/xe_gt_idle.c    | 7 ++++++-
>  drivers/gpu/drm/xe/xe_wa_oob.rules | 1 +
>  2 files changed, 7 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/xe/xe_gt_idle.c b/drivers/gpu/drm/xe/xe_gt_idle.c
> index 67aba4140510..3ed60a212ff6 100644
> --- a/drivers/gpu/drm/xe/xe_gt_idle.c
> +++ b/drivers/gpu/drm/xe/xe_gt_idle.c
> @@ -4,6 +4,7 @@
>   */
>  
>  #include <drm/drm_managed.h>
> +#include <generated/xe_wa_oob.h>
>  
>  #include "xe_force_wake.h"
>  #include "xe_device.h"
> @@ -16,6 +17,7 @@
>  #include "xe_mmio.h"
>  #include "xe_pm.h"
>  #include "xe_sriov.h"
> +#include "xe_wa.h"
>  
>  /**
>   * DOC: Xe GT Idle
> @@ -110,7 +112,10 @@ void xe_gt_idle_enable_pg(struct xe_gt *gt)
>  
>  	xe_device_assert_mem_access(gt_to_xe(gt));
>  
> -	pg_enable = RENDER_POWERGATE_ENABLE | MEDIA_POWERGATE_ENABLE;
> +	if (XE_WA(gt, 14020881953))
> +		pg_enable = MEDIA_POWERGATE_ENABLE;
> +	else
> +		pg_enable = RENDER_POWERGATE_ENABLE | MEDIA_POWERGATE_ENABLE;
>  
>  	for (i = XE_HW_ENGINE_VCS0, j = 0; i <= XE_HW_ENGINE_VCS7; ++i, ++j) {
>  		if ((gt->info.engine_mask & BIT(i)))
> diff --git a/drivers/gpu/drm/xe/xe_wa_oob.rules b/drivers/gpu/drm/xe/xe_wa_oob.rules
> index 540d38603f32..c513b801655c 100644
> --- a/drivers/gpu/drm/xe/xe_wa_oob.rules
> +++ b/drivers/gpu/drm/xe/xe_wa_oob.rules
> @@ -31,3 +31,4 @@
>  		GRAPHICS_VERSION(2001)
>  22019338487_display	PLATFORM(LUNARLAKE)
>  16023588340	GRAPHICS_VERSION(2001)
> +14020881953	GRAPHICS_VERSION_RANGE(2001, 2004)
> -- 
> 2.38.1
> 

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