drm/i915: use the complete gtt
At least the part that's currently enabled by the BIOS.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index 02daf4e..1bd37e3 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -1195,13 +1195,17 @@
return can_switch;
}
-static int i915_load_modeset_init(struct drm_device *dev,
- unsigned long prealloc_size,
- unsigned long agp_size)
+static int i915_load_modeset_init(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
+ unsigned long prealloc_size, gtt_size, mappable_size;
int ret = 0;
+ prealloc_size = dev_priv->mm.gtt->gtt_stolen_entries << PAGE_SHIFT;
+ gtt_size = dev_priv->mm.gtt->gtt_total_entries << PAGE_SHIFT;
+ mappable_size = dev_priv->mm.gtt->gtt_mappable_entries << PAGE_SHIFT;
+ gtt_size -= PAGE_SIZE;
+
/* Basic memrange allocator for stolen space (aka mm.vram) */
drm_mm_init(&dev_priv->mm.vram, 0, prealloc_size);
@@ -1214,7 +1218,7 @@
* at the last page of the aperture. One page should be enough to
* keep any prefetching inside of the aperture.
*/
- i915_gem_do_init(dev, prealloc_size, agp_size - 4096);
+ i915_gem_do_init(dev, prealloc_size, mappable_size, gtt_size);
mutex_lock(&dev->struct_mutex);
ret = i915_gem_init_ringbuffer(dev);
@@ -2056,7 +2060,7 @@
intel_detect_pch(dev);
if (drm_core_check_feature(dev, DRIVER_MODESET)) {
- ret = i915_load_modeset_init(dev, prealloc_size, agp_size);
+ ret = i915_load_modeset_init(dev);
if (ret < 0) {
DRM_ERROR("failed to init modeset\n");
goto out_workqueue_free;