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[28/50] drm/i915/bdw: Enable execlists in the hardware

Message ID 1399637360-4277-29-git-send-email-oscar.mateo@intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

oscar.mateo@intel.com May 9, 2014, 12:08 p.m. UTC 
From: Ben Widawsky <benjamin.widawsky@intel.com>

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>

v2: Set Replay Mode to 0 per BSpec

Michel Thierry <michel.thierry@intel.com>

v3: Several rebases.

Signed-off-by: Oscar Mateo <oscar.mateo@intel.com>
---
 drivers/gpu/drm/i915/intel_lrc.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)
diff mbox

Patch

diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index 0a944c2..a85f91c 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -343,9 +343,17 @@  int gen8_gem_context_init(struct drm_device *dev)
 		goto err_out;
 	}
 
-	for_each_ring(ring, dev_priv, ring_id)
+	for_each_ring(ring, dev_priv, ring_id) {
 		ring->default_context = ctx;
 
+		I915_WRITE(RING_MODE_GEN7(ring),
+			_MASKED_BIT_DISABLE(GFX_REPLAY_MODE) |
+			_MASKED_BIT_ENABLE(GFX_RUN_LIST_ENABLE));
+		POSTING_READ(RING_MODE_GEN7(ring));
+		DRM_DEBUG_DRIVER("Execlists enabled for %s\n",
+				ring->name);
+	}
+
 	DRM_DEBUG_DRIVER("LR context support initialized\n");
 	return 0;