drm: updated DRM map patch for 32/64 bit systems

I basically combined Paul's patches with additions that I had made
for PCI scatter gather.
I also tried more carefully to avoid problems with the same token
assigned multiple times while trying to use the base address in the
token if possible to gain as much backward compatibility as possible
for broken DRI clients.

From: Paul Mackerras <paulus@samba.org> and Egbert Eich <eich@suse.de>
Signed-off-by: Dave Airlie <airlied@linux.ie>

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/char/drm/r128_cce.c b/drivers/char/drm/r128_cce.c
index 08ed8d01d9d9..895152206b31 100644
--- a/drivers/char/drm/r128_cce.c
+++ b/drivers/char/drm/r128_cce.c
@@ -326,7 +326,8 @@ static void r128_cce_init_ring_buffer( drm_device_t *dev,
                 ring_start = dev_priv->cce_ring->offset - dev->agp->base;
         else
 #endif
-                ring_start = dev_priv->cce_ring->offset - dev->sg->handle;
+                ring_start = dev_priv->cce_ring->offset - 
+                                (unsigned long)dev->sg->virtual;
 
         R128_WRITE( R128_PM4_BUFFER_OFFSET, ring_start | R128_AGP_OFFSET );
 
@@ -487,6 +488,7 @@ static int r128_do_init_cce( drm_device_t *dev, drm_r128_init_t *init )
                 r128_do_cleanup_cce( dev );
                 return DRM_ERR(EINVAL);
         }
+        dev->agp_buffer_token = init->buffers_offset;
         dev->agp_buffer_map = drm_core_findmap(dev, init->buffers_offset);
         if(!dev->agp_buffer_map) {
                 DRM_ERROR("could not find dma buffer region!\n");
@@ -537,7 +539,7 @@ static int r128_do_init_cce( drm_device_t *dev, drm_r128_init_t *init )
                 dev_priv->cce_buffers_offset = dev->agp->base;
         else
 #endif
-                dev_priv->cce_buffers_offset = dev->sg->handle;
+                dev_priv->cce_buffers_offset = (unsigned long)dev->sg->virtual;
 
         dev_priv->ring.start = (u32 *)dev_priv->cce_ring->handle;
         dev_priv->ring.end = ((u32 *)dev_priv->cce_ring->handle