drm/radeon/kms: add info query for backend map

The 3D driver need to get the pipe to backend
map to certain things.  Add a query to get the
info.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index ef0e0e016914..ec534f52408a 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -1003,6 +1003,7 @@ struct r600_asic {
         unsigned                tiling_npipes;
         unsigned                tiling_group_size;
         unsigned                tile_config;
+        unsigned                backend_map;
         struct r100_gpu_lockup  lockup;
 };
 
@@ -1028,6 +1029,7 @@ struct rv770_asic {
         unsigned                tiling_npipes;
         unsigned                tiling_group_size;
         unsigned                tile_config;
+        unsigned                backend_map;
         struct r100_gpu_lockup  lockup;
 };
 
@@ -1054,6 +1056,7 @@ struct evergreen_asic {
         unsigned tiling_npipes;
         unsigned tiling_group_size;
         unsigned tile_config;
+        unsigned backend_map;
         struct r100_gpu_lockup  lockup;
 };