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

[Tejas Upadhyay]

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>
---
 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