1 files changed, 15 insertions, 1 deletions

diff --git a/drivers/gpu/drm/radeon/rs600.c b/drivers/gpu/drm/radeon/rs600.c
index 11a1da0fc76b..3be456b78191 100644
--- a/drivers/gpu/drm/radeon/rs600.c
+++ b/drivers/gpu/drm/radeon/rs600.c
@@ -45,6 +45,20 @@
 void rs600_gpu_init(struct radeon_device *rdev);
 int rs600_mc_wait_for_idle(struct radeon_device *rdev);
 
+int rs600_mc_init(struct radeon_device *rdev)
+{
+        /* read back the MC value from the hw */
+        uint32_t mc_fb_loc;
+        int r;
+
+        mc_fb_loc = RREG32_MC(R_000004_MC_FB_LOCATION);
+        rdev->mc.vram_location = G_000004_MC_FB_START(mc_fb_loc) << 16;
+        rdev->mc.gtt_location = 0xffffffffUL;
+        r = radeon_mc_setup(rdev);
+        if (r)
+                return r;
+        return 0;
+}
 /*
  * GART.
  */
@@ -505,7 +519,7 @@ int rs600_init(struct radeon_device *rdev)
         /* Get vram informations */
         rs600_vram_info(rdev);
         /* Initialize memory controller (also test AGP) */
-        r = r420_mc_init(rdev);
+        r = rs600_mc_init(rdev);
         if (r)
                 return r;
         rs600_debugfs(rdev);