diff mbox

drm/i915: overlay on gen2 can't address above 1G

Message ID 1283196323-22204-1-git-send-email-daniel.vetter@ffwll.ch (mailing list archive)
State New, archived
Headers show

Commit Message

Daniel Vetter Aug. 30, 2010, 7:25 p.m. UTC 
None
diff mbox

Patch

diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index a2d3509..d609747 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -2075,6 +2075,10 @@  int i915_driver_load(struct drm_device *dev, unsigned long flags)
 		goto free_priv;
 	}
 
+	/* overlay on gen2 is broken and can't address above 1G */
+	if (IS_GEN2(dev))
+		dma_set_coherent_mask(&dev->pdev->dev, DMA_BIT_MASK(30));
+
 	dev_priv->regs = ioremap(base, size);
 	if (!dev_priv->regs) {
 		DRM_ERROR("failed to map registers\n");