Merge branch 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied...

[linux-2.6-block.git] / drivers / gpu / drm / nouveau / nouveau_sgdma.c

diff --git a/drivers/gpu/drm/nouveau/nouveau_sgdma.c b/drivers/gpu/drm/nouveau/nouveau_sgdma.c
index 86785b8d42ed75a66b9ad01f04ab0a138d21f59d..1d6ee8b55154c95aa763ed278c31b14da32fa9a7 100644 (file)
--- a/drivers/gpu/drm/nouveau/nouveau_sgdma.c
+++ b/drivers/gpu/drm/nouveau/nouveau_sgdma.c
@@ -172,6 +172,24 @@ nouveau_sgdma_unbind(struct ttm_backend *be)
        }
        dev_priv->engine.instmem.finish_access(nvbe->dev);
 
+       if (dev_priv->card_type == NV_50) {
+               nv_wr32(dev, 0x100c80, 0x00050001);
+               if (!nv_wait(0x100c80, 0x00000001, 0x00000000)) {
+                       NV_ERROR(dev, "timeout: (0x100c80 & 1) == 0 (2)\n");
+                       NV_ERROR(dev, "0x100c80 = 0x%08x\n",
+                                               nv_rd32(dev, 0x100c80));
+                       return -EBUSY;
+               }
+
+               nv_wr32(dev, 0x100c80, 0x00000001);
+               if (!nv_wait(0x100c80, 0x00000001, 0x00000000)) {
+                       NV_ERROR(dev, "timeout: (0x100c80 & 1) == 0 (2)\n");
+                       NV_ERROR(dev, "0x100c80 = 0x%08x\n",
+                                               nv_rd32(dev, 0x100c80));
+                       return -EBUSY;
+               }
+       }
+
        nvbe->bound = false;
        return 0;
 }