From: Swathi Dhanavanthri <swathi.dhanavanthri@intel.com>
Date: Sat, 5 Dec 2020 09:25:39 +0000 (-0800)
Subject: drm/i915/dg1: Implement WA_16011163337
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=1efa473e65e3cefbd03c5cc9fed6f7fa73bf31d2;p=linux.git

drm/i915/dg1: Implement WA_16011163337

Set GS Timer to 224 to prevent a HS/DS hang.

Bspec: 53508

v2: reword commit message and add comment explaining why read
verification is ignored (Chris)

Cc: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Swathi Dhanavanthri <swathi.dhanavanthri@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20201205092542.2325477-1-lucas.demarchi@intel.com
---

diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c
index 7c6b21ced56f9..a81728c52bd50 100644
--- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
@@ -686,6 +686,16 @@ static void dg1_ctx_workarounds_init(struct intel_engine_cs *engine,
 	/* Wa_22010493298 */
 	WA_SET_BIT_MASKED(HIZ_CHICKEN,
 			  DG1_HZ_READ_SUPPRESSION_OPTIMIZATION_DISABLE);
+
+	/*
+	 * Wa_16011163337
+	 *
+	 * Like in tgl_ctx_workarounds_init(), read verification is ignored due
+	 * to Wa_1608008084.
+	 */
+	wa_add(wal,
+	       FF_MODE2,
+	       FF_MODE2_GS_TIMER_MASK, FF_MODE2_GS_TIMER_224, 0);
 }
 
 static void