drm: Allow for 44 bit user-tokens (or drm_file offsets)

[linux-2.6-omap-h63xx.git] / drivers / char / drm / via_dma.c

diff --git a/drivers/char/drm/via_dma.c b/drivers/char/drm/via_dma.c
index a691ae74129db2db470f843de39ec1199e7a82e1..c0539c6299cf422aea627e0b170fe7b007b4beac 100644 (file)
--- a/drivers/char/drm/via_dma.c
+++ b/drivers/char/drm/via_dma.c
@@ -190,6 +190,11 @@ 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;
@@ -480,6 +485,7 @@ static int via_hook_segment(drm_via_private_t * dev_priv,
                        VIA_WRITE(VIA_REG_TRANSET, (HC_ParaType_PreCR << 16));
                        VIA_WRITE(VIA_REG_TRANSPACE, pause_addr_hi);
                        VIA_WRITE(VIA_REG_TRANSPACE, pause_addr_lo);
+                       VIA_READ(VIA_REG_TRANSPACE);
                }
        }
        return paused;
@@ -557,8 +563,9 @@ static void via_cmdbuf_start(drm_via_private_t * dev_priv)
 
        VIA_WRITE(VIA_REG_TRANSPACE, pause_addr_hi);
        VIA_WRITE(VIA_REG_TRANSPACE, pause_addr_lo);
-
+       DRM_WRITEMEMORYBARRIER();
        VIA_WRITE(VIA_REG_TRANSPACE, command | HC_HAGPCMNT_MASK);
+       VIA_READ(VIA_REG_TRANSPACE);
 }
 
 static void via_pad_cache(drm_via_private_t * dev_priv, int qwords)