1 files changed, 21 insertions, 1 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_gem.c b/drivers/gpu/drm/radeon/radeon_gem.c
index cded5180c752..d4ceff13bbb1 100644
--- a/drivers/gpu/drm/radeon/radeon_gem.c
+++ b/drivers/gpu/drm/radeon/radeon_gem.c
@@ -262,7 +262,27 @@ int radeon_gem_mmap_ioctl(struct drm_device *dev, void *data,
 int radeon_gem_busy_ioctl(struct drm_device *dev, void *data,
                           struct drm_file *filp)
 {
-        /* FIXME: implement */
+        struct drm_radeon_gem_busy *args = data;
+        struct drm_gem_object *gobj;
+        struct radeon_object *robj;
+        int r;
+        uint32_t cur_placement;
+
+        gobj = drm_gem_object_lookup(dev, filp, args->handle);
+        if (gobj == NULL) {
+                return -EINVAL;
+        }
+        robj = gobj->driver_private;
+        r = radeon_object_busy_domain(robj, &cur_placement);
+        if (cur_placement == TTM_PL_VRAM)
+                args->domain = RADEON_GEM_DOMAIN_VRAM;
+        if (cur_placement == TTM_PL_FLAG_TT)
+                args->domain = RADEON_GEM_DOMAIN_GTT;
+        if (cur_placement == TTM_PL_FLAG_SYSTEM)
+                args->domain = RADEON_GEM_DOMAIN_CPU;
+        mutex_lock(&dev->struct_mutex);
+        drm_gem_object_unreference(gobj);
+        mutex_unlock(&dev->struct_mutex);
         return 0;
 }