[PATCH v2] drm/xe/xe2: Add workaround 18033852989

[Himal Prasad Ghimiray]

This workaround applies to RCS engine's context, hence added as
LRC workaround.

v2
- Fix commit description as lrc workaround instead of engine.(Lucas)

Reviewed-by: Lucas De Marchi <lucas.demarchi at intel.com>
Signed-off-by: Himal Prasad Ghimiray <himal.prasad.ghimiray 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 d5b21f03beaa..9728d9da9931 100644
--- a/drivers/gpu/drm/xe/regs/xe_gt_regs.h
+++ b/drivers/gpu/drm/xe/regs/xe_gt_regs.h
@@ -98,6 +98,7 @@
 #define   MSAA_OPTIMIZATION_REDUC_DISABLE	REG_BIT(11)
 
 #define COMMON_SLICE_CHICKEN1			XE_REG(0x7010)
+#define   DISABLE_BOTTOM_CLIP_RECTANGLE_TEST	REG_BIT(14)
 
 #define HIZ_CHICKEN					XE_REG(0x7018, XE_REG_OPTION_MASKED)
 #define   DG1_HZ_READ_SUPPRESSION_OPTIMIZATION_DISABLE	REG_BIT(14)
diff --git a/drivers/gpu/drm/xe/xe_wa.c b/drivers/gpu/drm/xe/xe_wa.c
index 74b33a3845f2..c904e55ced9c 100644
--- a/drivers/gpu/drm/xe/xe_wa.c
+++ b/drivers/gpu/drm/xe/xe_wa.c
@@ -579,6 +579,10 @@ static const struct xe_rtp_entry_sr lrc_was[] = {
 		       ENGINE_CLASS(RENDER)),
 	  XE_RTP_ACTIONS(SET(INSTPM(RENDER_RING_BASE), ENABLE_SEMAPHORE_POLL_BIT))
 	},
+	{ XE_RTP_NAME("18033852989"),
+	  XE_RTP_RULES(GRAPHICS_VERSION(2004), ENGINE_CLASS(RENDER)),
+	  XE_RTP_ACTIONS(SET(COMMON_SLICE_CHICKEN1, DISABLE_BOTTOM_CLIP_RECTANGLE_TEST))
+	},
 
 	{}
 };
-- 
2.25.1