[PATCH] drm/i915/tgl: Disable Media and GPGPU mid-thread preemption

Tvrtko Ursulin tvrtko.ursulin at linux.intel.com
Thu Jan 23 17:39:42 UTC 2020


From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>

...

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
---
 drivers/gpu/drm/i915/gt/intel_workarounds.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c
index 5a7db279f702..15d76c5bc7b6 100644
--- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
@@ -593,6 +593,8 @@ static void tgl_ctx_workarounds_init(struct intel_engine_cs *engine,
 	wa_add(wal, FF_MODE2, FF_MODE2_TDS_TIMER_MASK, val,
 	       IS_TGL_REVID(engine->i915, TGL_REVID_A0, TGL_REVID_A0) ? 0 :
 			    FF_MODE2_TDS_TIMER_MASK);
+
+	WA_SET_FIELD_MASKED(_MMIO(0x2580), 6, 2);
 }
 
 static void
@@ -1347,6 +1349,9 @@ rcs_engine_wa_init(struct intel_engine_cs *engine, struct i915_wa_list *wal)
 			    GEN7_DISABLE_SAMPLER_PREFETCH);
 	}
 
+	if (IS_TIGERLAKE(i915))
+		wa_masked_en(wal, _MMIO(0x20e0), BIT(14));
+
 	if (IS_GEN(i915, 11)) {
 		/* This is not an Wa. Enable for better image quality */
 		wa_masked_en(wal,
-- 
2.20.1



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