drm/i915/guc: Apply Wa_16011777198

Enable GuC Wa to reset RCS/CCS before it goes into RC6.
Signed-off-by: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
Reviewed-by: John Harrison <John.C.Harrison@Intel.com>
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220415224025.3693037-5-umesh.nerlige.ramappa@intel.com

drivers/gpu/drm/i915/gt/uc/intel_guc.c

@@ -310,6 +310,11 @@ static u32 guc_ctl_wa_flags(struct intel_guc *guc)
 	if (GRAPHICS_VER(gt->i915) == 12)
 		flags |= GUC_WA_PRE_PARSER;
 
+	/* Wa_16011777198:dg2 */
+	if (IS_DG2_GRAPHICS_STEP(gt->i915, G10, STEP_A0, STEP_C0) ||
+	    IS_DG2_GRAPHICS_STEP(gt->i915, G11, STEP_A0, STEP_B0))
+		flags |= GUC_WA_RCS_RESET_BEFORE_RC6;
+
 	return flags;
 }
 

drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h

@@ -100,6 +100,7 @@
 #define GUC_CTL_WA			1
 #define   GUC_WA_GAM_CREDITS		BIT(10)
 #define   GUC_WA_DUAL_QUEUE		BIT(11)
+#define   GUC_WA_RCS_RESET_BEFORE_RC6	BIT(13)
 #define   GUC_WA_PRE_PARSER		BIT(14)
 #define   GUC_WA_POLLCS			BIT(18)