Merge tag 'drm-intel-next-2012-06-04' of git://people.freedesktop.org/~danvet/drm...

[firefly-linux-kernel-4.4.55.git] / drivers / gpu / drm / i915 / intel_ringbuffer.c

diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 89a5e7f89d7ab0d4924925dca1826d1b646691ba..f30850b079e968b20c6e532ce88886a34b66aeb1 100644 (file)
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -266,10 +266,15 @@ u32 intel_ring_get_active_head(struct intel_ring_buffer *ring)
 
 static int init_ring_common(struct intel_ring_buffer *ring)
 {
-       drm_i915_private_t *dev_priv = ring->dev->dev_private;
+       struct drm_device *dev = ring->dev;
+       drm_i915_private_t *dev_priv = dev->dev_private;
        struct drm_i915_gem_object *obj = ring->obj;
+       int ret = 0;
        u32 head;
 
+       if (HAS_FORCE_WAKE(dev))
+               gen6_gt_force_wake_get(dev_priv);
+
        /* Stop the ring if it's running. */
        I915_WRITE_CTL(ring, 0);
        I915_WRITE_HEAD(ring, 0);
@@ -317,7 +322,8 @@ static int init_ring_common(struct intel_ring_buffer *ring)
                                I915_READ_HEAD(ring),
                                I915_READ_TAIL(ring),
                                I915_READ_START(ring));
-               return -EIO;
+               ret = -EIO;
+               goto out;
        }
 
        if (!drm_core_check_feature(ring->dev, DRIVER_MODESET))
@@ -326,9 +332,14 @@ static int init_ring_common(struct intel_ring_buffer *ring)
                ring->head = I915_READ_HEAD(ring);
                ring->tail = I915_READ_TAIL(ring) & TAIL_ADDR;
                ring->space = ring_space(ring);
+               ring->last_retired_head = -1;
        }
 
-       return 0;
+out:
+       if (HAS_FORCE_WAKE(dev))
+               gen6_gt_force_wake_put(dev_priv);
+
+       return ret;
 }
 
 static int
@@ -997,6 +1008,10 @@ static int intel_init_ring_buffer(struct drm_device *dev,
        if (ret)
                goto err_unref;
 
+       ret = i915_gem_object_set_to_gtt_domain(obj, true);
+       if (ret)
+               goto err_unpin;
+
        ring->virtual_start = ioremap_wc(dev->agp->base + obj->gtt_offset,
                                         ring->size);
        if (ring->virtual_start == NULL) {