((ring->gem_object->size - PAGE_SIZE) & RING_NR_PAGES)
| RING_NO_REPORT | RING_VALID);
- head = I915_READ_HEAD(ring) & HEAD_ADDR;
/* If the head is still not zero, the ring is dead */
- if (head != 0) {
+ if ((I915_READ_CTL(ring) & RING_VALID) == 0 ||
+ I915_READ_START(ring) != obj_priv->gtt_offset ||
+ (I915_READ_HEAD(ring) & HEAD_ADDR) != 0) {
DRM_ERROR("%s initialization failed "
"ctl %08x head %08x tail %08x start %08x\n",
ring->name,
obj_priv = to_intel_bo(obj);
obj_priv->agp_type = AGP_USER_CACHED_MEMORY;
- ret = i915_gem_object_pin(obj, 4096);
+ ret = i915_gem_object_pin(obj, 4096, true, false);
if (ret != 0) {
goto err_unref;
}
int intel_init_ring_buffer(struct drm_device *dev,
struct intel_ring_buffer *ring)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
struct drm_i915_gem_object *obj_priv;
struct drm_gem_object *obj;
int ret;
ring->gem_object = obj;
- ret = i915_gem_object_pin(obj, PAGE_SIZE);
+ ret = i915_gem_object_pin(obj, PAGE_SIZE, true, false);
if (ret)
goto err_unref;
if (ret)
goto err_unmap;
- if (!drm_core_check_feature(dev, DRIVER_MODESET))
- i915_kernel_lost_context(dev);
- else {
- ring->head = I915_READ_HEAD(ring) & HEAD_ADDR;
- ring->tail = I915_READ_TAIL(ring) & TAIL_ADDR;
- ring->space = ring->head - (ring->tail + 8);
- if (ring->space < 0)
- ring->space += ring->size;
- }
- return ret;
+ return 0;
err_unmap:
drm_core_ioremapfree(&ring->map, dev);
void intel_cleanup_ring_buffer(struct intel_ring_buffer *ring)
{
+ struct drm_i915_private *dev_priv;
+ int ret;
+
if (ring->gem_object == NULL)
return;
+ /* Disable the ring buffer. The ring must be idle at this point */
+ dev_priv = ring->dev->dev_private;
+ ret = intel_wait_ring_buffer(ring, ring->size - 8);
+ I915_WRITE_CTL(ring, 0);
+
drm_core_ioremapfree(&ring->map, ring->dev);
i915_gem_object_unpin(ring->gem_object);
}
msleep(1);
+ if (atomic_read(&dev_priv->mm.wedged))
+ return -EAGAIN;
} while (!time_after(jiffies, end));
trace_i915_ring_wait_end (dev);
return -EBUSY;