[Intel-gfx] [PATCH 10/42] drm/i915/bdw: Render moot context reset and switch with Execlists

[oscar.mateo at intel.com]

From: Oscar Mateo <oscar.mateo at intel.com>

These two functions make no sense in an Logical Ring Context & Execlists
world.

v2: We got rid of lrc_enabled and centralized everything in the sanitized
i915.enbale_execlists instead.

Signed-off-by: Oscar Mateo <oscar.mateo at intel.com>
---
 drivers/gpu/drm/i915/i915_gem_context.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_gem_context.c b/drivers/gpu/drm/i915/i915_gem_context.c
index fbe7278..288f5de 100644
--- a/drivers/gpu/drm/i915/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/i915_gem_context.c
@@ -380,6 +380,9 @@ void i915_gem_context_reset(struct drm_device *dev)
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	int i;
 
+	if (i915.enable_execlists)
+		return;
+
 	/* Prevent the hardware from restoring the last context (which hung) on
 	 * the next switch */
 	for (i = 0; i < I915_NUM_RINGS; i++) {
@@ -514,6 +517,9 @@ int i915_gem_context_enable(struct drm_i915_private *dev_priv)
 		ppgtt->enable(ppgtt);
 	}
 
+	if (i915.enable_execlists)
+		return 0;
+
 	/* FIXME: We should make this work, even in reset */
 	if (i915_reset_in_progress(&dev_priv->gpu_error))
 		return 0;
@@ -769,6 +775,9 @@ int i915_switch_context(struct intel_engine_cs *ring,
 {
 	struct drm_i915_private *dev_priv = ring->dev->dev_private;
 
+	if (i915.enable_execlists)
+		return 0;
+
 	WARN_ON(!mutex_is_locked(&dev_priv->dev->struct_mutex));
 
 	if (to->legacy_hw_ctx.rcs_state == NULL) { /* We have the fake context */
-- 
1.9.0