[Intel-gfx] [PATCH 05/10] drm/i915: We implement the TLB invalidation mode workaounds

[Damien Lespiau]

Signed-off-by: Damien Lespiau <damien.lespiau at intel.com>
---
 drivers/gpu/drm/i915/intel_ringbuffer.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 0e72da6..ce14594 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -523,11 +523,14 @@ static int init_render_ring(struct intel_ring_buffer *ring)
 	if (INTEL_INFO(dev)->gen >= 6)
 		I915_WRITE(MI_MODE, _MASKED_BIT_ENABLE(ASYNC_FLIP_PERF_DISABLE));
 
-	/* Required for the hardware to program scanline values for waiting */
+	/* Required for the hardware to program scanline values for waiting
+	 * WaEnableFlushTlbInvalidationMode:snb
+	 */
 	if (INTEL_INFO(dev)->gen == 6)
 		I915_WRITE(GFX_MODE,
 			   _MASKED_BIT_ENABLE(GFX_TLB_INVALIDATE_ALWAYS));
 
+	/* WaBCSVCSTlbInvalidationMode:ivb,hsw,vlv */
 	if (IS_GEN7(dev))
 		I915_WRITE(GFX_MODE_GEN7,
 			   _MASKED_BIT_DISABLE(GFX_TLB_INVALIDATE_ALWAYS) |
-- 
1.8.1.4