drm/i915/gen9: Implement WaDisablePartialInstShootdown

Hoath, Nicholas · danvet · commit ab0dfafefd85 · 2015-02-13T23:28:07.000+01:00
v2: Dont add WaDisableThreadStallDopClockGating as not SKL WA. (Found
by Damien Lespiau)

Signed-off-by: Nick Hoath &lt;nicholas.hoath@intel.com&gt;
Reviewed-by: Damien Lespiau &lt;damien.lespiau@intel.com&gt;
[danvet: Bikeshed commit message a bit as per Damien's suggestions.]
Signed-off-by: Daniel Vetter &lt;daniel.vetter@ffwll.ch&gt;
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -875,6 +875,13 @@ static int chv_init_workarounds(struct intel_engine_cs *ring)
 
 static int gen9_init_workarounds(struct intel_engine_cs *ring)
 {
+	struct drm_device *dev = ring->dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+
+	/* WaDisablePartialInstShootdown:skl */
+	WA_SET_BIT_MASKED(GEN8_ROW_CHICKEN,
+			  PARTIAL_INSTRUCTION_SHOOTDOWN_DISABLE);
+
 	return 0;
 }
 

Original file line number	Diff line number	Diff line change
`@@ -875,6 +875,13 @@ static int chv_init_workarounds(struct intel_engine_cs *ring)`
`875`	`875`
`876`	`876`	`static int gen9_init_workarounds(struct intel_engine_cs *ring)`
`877`	`877`	`{`
	`878`	`+ struct drm_device *dev = ring->dev;`
	`879`	`+ struct drm_i915_private *dev_priv = dev->dev_private;`
	`880`	`+`
	`881`	`+ /* WaDisablePartialInstShootdown:skl */`
	`882`	`+ WA_SET_BIT_MASKED(GEN8_ROW_CHICKEN,`
	`883`	`+ PARTIAL_INSTRUCTION_SHOOTDOWN_DISABLE);`
	`884`	`+`
`878`	`885`	`return 0;`
`879`	`886`	`}`
`880`	`887`