From 70bba11bc7bbf0cfb028521c1b6676ed0962c317 Mon Sep 17 00:00:00 2001
From: Thomas Hellstrom <thomas-at-tungstengraphics-dot-com>
Date: Fri, 2 Feb 2007 09:20:16 +0100
Subject: Disable AGP DMA for chips with the new 3D engine.

---
 shared-core/via_dma.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'shared-core/via_dma.c')

diff --git a/shared-core/via_dma.c b/shared-core/via_dma.c
index 90dbb6a2..a08d7d5a 100644
--- a/shared-core/via_dma.c
+++ b/shared-core/via_dma.c
@@ -192,6 +192,11 @@ static int via_initialize(drm_device_t * dev,
 		return DRM_ERR(EFAULT);
 	}
 
+	if (dev_priv->chipset == VIA_DX9_0) {
+		DRM_ERROR("AGP DMA is not supported on this chip\n");
+		return DRM_ERR(EINVAL);
+	}
+
 	dev_priv->ring.map.offset = dev->agp->base + init->offset;
 	dev_priv->ring.map.size = init->size;
 	dev_priv->ring.map.type = 0;
-- 
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